/* roulang page: index */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 76px 0;
            --section-padding-mobile: 48px 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }

        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }

        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }

        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 160px;
            font-size: 14px;
            outline: none;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 12px;
            cursor: pointer;
            transition: color var(--transition);
        }

        .search-form button:hover {
            color: var(--color-secondary);
        }

        .auth-buttons {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.30);
            color: #FFFFFF;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.50);
        }

        .btn-register {
            background: var(--color-secondary);
            border: none;
            color: #0A1628;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 0 16px var(--color-glow-green);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-register:hover {
            background: #00F0B0;
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.60);
            transform: translateY(-1px);
        }

        /* Nav */
        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0;
        }

        .main-nav ul::-webkit-scrollbar {
            display: none;
        }

        .main-nav li {
            flex-shrink: 0;
            position: relative;
        }

        .main-nav a {
            display: block;
            padding: 14px 18px;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.5px;
            border-bottom: 3px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.04);
        }

        .main-nav a.active {
            color: var(--color-secondary);
            border-bottom-color: var(--color-secondary);
        }

        .main-nav li.dropdown:hover .dropdown-menu {
            display: block;
            animation: fadeInDown 0.2s ease;
        }

        .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 160px;
            background: rgba(11, 30, 58, 0.98);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 6px 0;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.50);
            z-index: 100;
        }

        .dropdown-menu a {
            padding: 10px 18px;
            font-size: 14px;
            border-bottom: none;
            color: var(--color-text);
        }

        .dropdown-menu a:hover {
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Hamburger */
        .hamburger {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 6px;
            width: 42px;
            height: 38px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 1px;
            transition: all var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.40);
        }

        /* Progress Steps */
        .progress-steps {
            background: rgba(11, 30, 58, 0.70);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 10px 0;
        }

        .progress-steps .steps-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
            list-style: none;
            padding: 0;
        }

        .progress-steps .step {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            cursor: pointer;
            transition: all var(--transition);
            position: relative;
            color: var(--color-text-muted);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
        }

        .progress-steps .step:not(:last-child)::after {
            content: '';
            width: 32px;
            height: 2px;
            background: rgba(255, 255, 255, 0.15);
            margin-left: 20px;
        }

        .progress-steps .step .step-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-muted);
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .progress-steps .step:hover {
            color: #FFFFFF;
        }

        .progress-steps .step:hover .step-num {
            background: rgba(255, 255, 255, 0.20);
            border-color: rgba(255, 255, 255, 0.40);
        }

        .progress-steps .step.active {
            color: var(--color-secondary);
        }

        .progress-steps .step.active .step-num {
            background: var(--color-secondary);
            color: #0A1628;
            border-color: var(--color-secondary);
            box-shadow: 0 0 14px var(--color-glow-green);
        }

        /* ========== SECTION BASE ========== */
        section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 640px;
        }

        @media (max-width: 640px) {
            section {
                padding: var(--section-padding-mobile);
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
        }

        /* ========== GLASS CARD ========== */
        .glass-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition);
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-secondary);
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
        }

        .btn-primary:hover {
            background: #00F0B0;
            box-shadow: 0 0 28px rgba(0, 229, 160, 0.60);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 14px var(--color-glow-green);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.60);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-accent {
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 0 20px var(--color-glow-orange);
        }

        .btn-accent:hover {
            background: #FF7060;
            box-shadow: 0 0 28px rgba(255, 90, 60, 0.55);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-gold {
            background: var(--color-gold);
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-gold);
        }

        .btn-gold:hover {
            background: #FFD633;
            box-shadow: 0 0 28px rgba(255, 200, 0, 0.50);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        /* ========== HERO ========== */
        .hero-section {
            padding: 0;
            min-height: 620px;
            display: flex;
            align-items: center;
            position: relative;
            background:
                linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(13, 43, 94, 0.70) 45%, rgba(10, 22, 40, 0.88) 100%),
                url('/assets/images/3f486e9a75555e1e.webp');
            background-size: cover;
            background-position: center 30%;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 60px;
        }

        .hero-countdown-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 90, 60, 0.18);
            border: 1px solid rgba(255, 90, 60, 0.40);
            color: #FFB4A0;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-countdown-badge i {
            color: var(--color-accent);
            font-size: 12px;
        }

        .hero-section h1 {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            max-width: 620px;
        }

        .hero-section .hero-desc {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.85;
            margin-bottom: 30px;
            max-width: 580px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }

        .hero-data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero-data-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-data-item .number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-secondary);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .hero-data-item .label {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .hero-right-image {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-right-image img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.55);
        }

        @media (max-width: 1023px) {
            .hero-section {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-content {
                padding: 40px 0 30px;
            }
            .hero-section h1 {
                font-size: 28px;
            }
            .hero-right-image {
                margin-top: 30px;
            }
            .hero-right-image img {
                max-height: 300px;
            }
        }

        @media (max-width: 640px) {
            .hero-section h1 {
                font-size: 24px;
                letter-spacing: 0;
            }
            .hero-section .hero-desc {
                font-size: 15px;
            }
            .hero-data-strip {
                gap: 16px;
            }
            .hero-data-item .number {
                font-size: 22px;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== LIVE SCORES ========== */
        .live-scores-strip .score-card {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-height: 170px;
            cursor: default;
        }

        .score-card .match-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .score-card .status-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .status-badge.live {
            background: rgba(255, 90, 60, 0.20);
            color: #FF9070;
            border: 1px solid rgba(255, 90, 60, 0.45);
        }

        .status-badge.upcoming {
            background: rgba(255, 200, 0, 0.15);
            color: #FFD633;
            border: 1px solid rgba(255, 200, 0, 0.35);
        }

        .status-badge.finished {
            background: rgba(255, 255, 255, 0.10);
            color: var(--color-text-muted);
            border: 1px solid rgba(255, 255, 255, 0.20);
        }

        .score-card .teams {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
        }

        .score-card .team-name {
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .score-card .team-name:last-of-type {
            text-align: right;
        }

        .score-card .score-display {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-secondary);
            text-shadow: 0 0 18px rgba(0, 229, 160, 0.55);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .score-card .match-time {
            font-size: 12px;
            color: var(--color-text-muted);
            text-align: center;
        }

        .scores-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        @media (max-width: 1023px) {
            .scores-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        @media (max-width: 640px) {
            .scores-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .score-card .teams {
                font-size: 14px;
            }
            .score-card .score-display {
                font-size: 22px;
            }
        }

        /* ========== FEATURE CARDS ========== */
        .feature-card {
            padding: 26px 24px;
            min-height: 190px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.30);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-secondary);
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 229, 160, 0.22);
            border-color: rgba(0, 229, 160, 0.50);
            box-shadow: 0 0 18px rgba(0, 229, 160, 0.30);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 4px 0 0;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin: 0;
        }

        .content-card {
            padding: 22px;
            min-height: 160px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            text-decoration: none;
            color: var(--color-text);
        }

        .content-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
            transition: color var(--transition);
        }

        .content-card:hover h3 {
            color: var(--color-secondary);
        }

        .content-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .content-card .card-link {
            margin-top: auto;
            font-size: 13px;
            color: var(--color-secondary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .media-card {
            overflow: hidden;
            min-height: 220px;
            display: flex;
            flex-direction: column;
        }

        .media-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 0;
            flex-shrink: 0;
        }

        .media-card .media-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .media-card .media-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
        }

        .media-card .media-body p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* ========== SCENARIO ========== */
        .scenario-block {
            display: flex;
            align-items: center;
            gap: 36px;
            margin-bottom: 32px;
            padding: 28px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }

        .scenario-block:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .scenario-block.reverse {
            flex-direction: row-reverse;
        }

        .scenario-block img {
            width: 180px;
            height: 120px;
            object-fit: cover;
            border-radius: 12px;
            flex-shrink: 0;
        }

        .scenario-block .scenario-text h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 8px;
        }

        .scenario-block .scenario-text p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 640px) {
            .scenario-block,
            .scenario-block.reverse {
                flex-direction: column;
                gap: 16px;
                padding: 20px;
                align-items: flex-start;
            }
            .scenario-block img {
                width: 100%;
                height: auto;
                max-height: 160px;
            }
        }

        /* ========== DEMO PANEL ========== */
        .demo-section {
            background: linear-gradient(180deg, rgba(11, 30, 58, 0.85) 0%, rgba(10, 22, 40, 0.95) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .demo-panel {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 20px;
            padding: 28px;
            margin-bottom: 28px;
        }

        .demo-panel-inner {
            border-radius: 14px;
            background: rgba(10, 22, 40, 0.80);
            padding: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            font-family: var(--font-mono);
        }

        .demo-score-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--color-text);
        }

        .demo-score-row .demo-score {
            color: var(--color-secondary);
            font-weight: 700;
            font-size: 15px;
        }

        .demo-chart-placeholder {
            height: 80px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.15) 0%, rgba(0, 229, 160, 0.04) 70%);
            border-radius: 10px;
            margin: 12px 0;
            display: flex;
            align-items: flex-end;
            gap: 6px;
            padding: 10px;
        }

        .demo-chart-placeholder .bar {
            flex: 1;
            background: rgba(0, 229, 160, 0.55);
            border-radius: 4px 4px 0 0;
            min-height: 20px;
            transition: height var(--transition);
        }

        .demo-chart-placeholder .bar:nth-child(1) {
            height: 35%;
        }
        .demo-chart-placeholder .bar:nth-child(2) {
            height: 65%;
        }
        .demo-chart-placeholder .bar:nth-child(3) {
            height: 45%;
        }
        .demo-chart-placeholder .bar:nth-child(4) {
            height: 80%;
        }
        .demo-chart-placeholder .bar:nth-child(5) {
            height: 55%;
        }
        .demo-chart-placeholder .bar:nth-child(6) {
            height: 70%;
        }
        .demo-chart-placeholder .bar:nth-child(7) {
            height: 90%;
        }

        .demo-annotations {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 20px;
        }

        .demo-annotation {
            padding: 14px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        @media (max-width: 640px) {
            .demo-panel {
                padding: 16px;
            }
            .demo-annotations {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }

        /* ========== CASE CARD ========== */
        .case-card {
            padding: 24px;
            min-height: 230px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .case-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
        }

        .case-card p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }

        .case-card .case-tag {
            display: inline-block;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.30);
            color: var(--color-secondary);
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            align-self: flex-start;
        }

        /* ========== PRICING ========== */
        .pricing-card {
            padding: 28px 24px;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
        }

        .pricing-card.featured {
            border-color: rgba(0, 229, 160, 0.50);
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.25), var(--shadow-card);
        }

        .pricing-card.featured::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--color-secondary);
            color: #0A1628;
            padding: 3px 14px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .pricing-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
        }

        .pricing-card .price {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.1;
        }

        .pricing-card .price span {
            font-size: 14px;
            font-weight: 400;
            color: var(--color-text-muted);
        }

        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 4px 0 0;
            flex: 1;
        }

        .pricing-card ul li {
            padding: 6px 0;
            font-size: 13px;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .pricing-card ul li:last-child {
            border-bottom: none;
        }

        .pricing-card ul li i {
            color: var(--color-secondary);
            font-size: 12px;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-card {
            padding: 24px;
            min-height: 190px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.06));
            border: 1px solid rgba(255, 255, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-secondary);
            flex-shrink: 0;
        }

        .testimonial-info .name {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
        }

        .testimonial-info .role {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .testimonial-card p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== WORD OF MOUTH ========== */
        .wom-card {
            padding: 16px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-height: 100px;
        }

        .wom-card .quote {
            font-size: 13px;
            color: var(--color-text);
            line-height: 1.6;
            font-style: italic;
        }

        .wom-card .source {
            font-size: 11px;
            color: var(--color-text-muted);
            align-self: flex-end;
        }

        /* ========== NEWS LIST ========== */
        .news-list-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            margin-bottom: 10px;
            transition: all var(--transition);
            align-items: flex-start;
        }

        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.16);
            transform: translateX(4px);
        }

        .news-list-item .news-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--color-text-muted);
            white-space: nowrap;
            padding-top: 2px;
            min-width: 60px;
        }

        .news-list-item .news-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 4px;
            line-height: 1.45;
        }

        .news-list-item .news-content p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0 0 4px;
            line-height: 1.6;
        }

        .news-list-item .news-content .news-tag {
            font-size: 11px;
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
            padding: 2px 8px;
            border-radius: 10px;
            display: inline-block;
        }

        .hot-ranking {
            padding: 22px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
        }

        .hot-ranking h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hot-ranking ol {
            padding-left: 20px;
            margin: 0;
            list-style: none;
            counter-reset: rank;
        }

        .hot-ranking ol li {
            counter-increment: rank;
            padding: 10px 0;
            font-size: 14px;
            color: var(--color-text);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }

        .hot-ranking ol li:last-child {
            border-bottom: none;
        }

        .hot-ranking ol li::before {
            content: counter(rank);
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
            min-width: 20px;
        }

        .hot-ranking ol li .hot-count {
            font-size: 11px;
            color: var(--color-text-muted);
            margin-left: auto;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 3px;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-section {
            background: rgba(255, 255, 255, 0.02);
        }

        .brand-intro-block {
            display: flex;
            align-items: center;
            gap: 36px;
            padding: 32px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .brand-intro-block img {
            width: 220px;
            height: 160px;
            object-fit: cover;
            border-radius: 14px;
            flex-shrink: 0;
        }

        .brand-intro-text {
            flex: 1;
        }

        .brand-intro-text p {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.9;
            margin: 0 0 12px;
        }

        .brand-intro-text p:last-child {
            margin-bottom: 0;
        }

        @media (max-width: 640px) {
            .brand-intro-block {
                flex-direction: column;
                padding: 20px;
                gap: 20px;
                align-items: flex-start;
            }
            .brand-intro-block img {
                width: 100%;
                height: auto;
                max-height: 180px;
            }
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 14px;
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.20);
        }

        .faq-item.active {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 229, 160, 0.30);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            user-select: none;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--color-secondary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.30);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-secondary);
            font-size: 12px;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .faq-item.active .faq-icon {
            background: var(--color-secondary);
            color: #0A1628;
            border-color: var(--color-secondary);
            box-shadow: 0 0 12px var(--color-glow-green);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.75;
            padding: 0 20px 0 60px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(13, 43, 94, 0.90) 0%, rgba(10, 22, 40, 0.96) 60%, rgba(0, 24, 48, 0.98) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .cta-block {
            text-align: center;
            padding: 20px 0;
        }

        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .cta-block p {
            font-size: 16px;
            color: var(--color-text);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        @media (max-width: 640px) {
            .cta-block h2 {
                font-size: 22px;
            }
            .cta-block p {
                font-size: 15px;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 18, 34, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 300px;
            margin: 0;
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 12px;
        }

        .footer-column ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--color-secondary);
        }

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
        }

        .footer-bottom .copyright {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }

        .footer-bottom .beian {
            font-size: 12px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        .footer-bottom .footer-links {
            display: flex;
            justify-content: center;
            gap: 16px;
            font-size: 13px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .footer-bottom .footer-links a {
            color: var(--color-text-muted);
            text-decoration: underline;
            transition: color var(--transition);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--color-secondary);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========== MOBILE NAV ========== */
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
            }
            .main-nav.open {
                display: block;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                border-bottom: 1px solid rgba(255, 255, 255, 0.10);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.50);
                max-height: 420px;
                overflow-y: auto;
            }
            .main-nav.open ul {
                flex-direction: column;
                padding: 8px 0;
            }
            .main-nav.open a {
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .dropdown-menu {
                display: none;
                position: static;
                background: transparent;
                border: none;
                padding-left: 20px;
                box-shadow: none;
            }
            .progress-steps .steps-wrapper {
                flex-direction: column;
                gap: 6px;
                align-items: flex-start;
                padding: 4px 0;
            }
            .progress-steps .step:not(:last-child)::after {
                display: none;
            }
            .progress-steps .step {
                padding: 4px 0;
            }
            .search-form input {
                width: 110px;
            }
        }

        @media (max-width: 520px) {
            .top-bar-header {
                gap: 10px;
            }
            .brand-logo .logo-text .zh {
                font-size: 17px;
            }
            .brand-logo .logo-text .en {
                font-size: 9px;
            }
            .search-form input {
                width: 80px;
                font-size: 13px;
                padding: 6px 10px;
            }
            .btn-login,
            .btn-register {
                padding: 6px 12px;
                font-size: 12px;
            }
            .auth-buttons {
                gap: 6px;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .mb-28 {
            margin-bottom: 28px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

/* roulang page: category1 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 76px 0;
            --section-padding-mobile: 48px 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }

        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }

        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 2px;
        }

        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 160px;
            font-size: 14px;
            outline: none;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 12px;
            cursor: pointer;
            transition: color var(--transition);
        }

        .search-form button:hover {
            color: var(--color-secondary);
        }

        .auth-btns {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .auth-btns .btn-login {
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
            color: #fff;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 14px;
            transition: all var(--transition);
        }

        .auth-btns .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .auth-btns .btn-register {
            background: var(--color-secondary);
            color: #0A1628;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            box-shadow: 0 0 14px var(--color-glow-green);
            transition: all var(--transition);
        }

        .auth-btns .btn-register:hover {
            background: #00F0B0;
            box-shadow: 0 0 22px var(--color-glow-green);
        }

        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }

        .main-nav .container {
            position: relative;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav ul::-webkit-scrollbar {
            display: none;
        }

        .main-nav li {
            position: relative;
            flex-shrink: 0;
        }

        .main-nav>ul>li>a {
            display: block;
            padding: 13px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            transition: color var(--transition);
            position: relative;
        }

        .main-nav>ul>li>a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .main-nav>ul>li>a:hover,
        .main-nav>ul>li>a:focus {
            color: #fff;
        }

        .main-nav>ul>li>a:hover::after,
        .main-nav>ul>li>a:focus::after {
            width: 60%;
        }

        .main-nav>ul>li>a.active {
            color: var(--color-secondary);
        }

        .main-nav>ul>li>a.active::after {
            width: 60%;
        }

        .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: rgba(10, 22, 40, 0.96);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 0 0 12px 12px;
            min-width: 180px;
            padding: 10px 0;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.50);
            z-index: 200;
        }

        .main-nav li:hover .dropdown-menu {
            display: block;
        }

        .dropdown-menu a {
            display: block;
            padding: 9px 20px;
            font-size: 14px;
            color: var(--color-text-muted);
            transition: all var(--transition);
        }

        .dropdown-menu a:hover {
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 8px 12px;
            font-size: 18px;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-bar {
            padding: 14px 0 0;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .breadcrumb-bar a {
            color: var(--color-text-muted);
        }

        .breadcrumb-bar a:hover {
            color: var(--color-secondary);
        }

        .breadcrumb-bar .separator {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb-bar .current {
            color: var(--color-secondary);
        }

        /* ========== 分类H1 ========== */
        .category-hero {
            padding: 36px 0 20px;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            margin-bottom: 10px;
        }

        .category-hero .cat-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 700px;
            line-height: 1.9;
        }

        /* ========== 筛选工具条 ========== */
        .filter-toolbar {
            padding: 16px 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin: 20px 0 28px;
        }

        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tags .tag {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 20px;
            font-size: 13px;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tags .tag:hover,
        .filter-tags .tag.active {
            background: rgba(0, 229, 160, 0.12);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .filter-sort select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--color-text);
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 13px;
            outline: none;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%238BA0C0' d='M5 6L0 0h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            padding-right: 28px;
        }

        .filter-sort select:focus {
            border-color: var(--color-secondary);
        }

        /* ========== 新闻列表 ========== */
        .news-list {
            margin-bottom: 40px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .news-item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-secondary), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .news-item:hover {
            background: var(--color-bg-card-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .news-item:hover::after {
            opacity: 1;
        }

        .news-thumb {
            flex: 0 0 220px;
            width: 220px;
            height: 140px;
            overflow: hidden;
            border-radius: 12px;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px;
            transition: transform 0.4s ease;
        }

        .news-item:hover .news-thumb img {
            transform: scale(1.05);
        }

        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-content .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-heading);
            line-height: 1.5;
            margin-bottom: 6px;
        }

        .news-content .news-excerpt {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .news-meta .news-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .news-meta .news-source {
            padding: 3px 10px;
            background: rgba(255, 200, 0, 0.10);
            border: 1px solid rgba(255, 200, 0, 0.25);
            border-radius: 20px;
            color: var(--color-gold);
            font-size: 11px;
        }

        .news-meta .news-tag {
            padding: 3px 10px;
            background: rgba(0, 229, 160, 0.08);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: 20px;
            color: var(--color-secondary);
            font-size: 11px;
        }

        /* ========== 精选推荐 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin: 20px 0 40px;
        }

        .featured-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 16px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
        }

        .featured-card:hover {
            background: var(--color-bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .featured-card .featured-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            box-shadow: 0 0 12px var(--color-glow-orange);
            z-index: 2;
        }

        .featured-card .featured-thumb {
            width: 100%;
            height: 130px;
            overflow: hidden;
            border-radius: 12px;
            margin-bottom: 12px;
        }

        .featured-card .featured-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px;
            transition: transform 0.4s ease;
        }

        .featured-card:hover .featured-thumb img {
            transform: scale(1.06);
        }

        .featured-card .featured-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-heading);
            line-height: 1.5;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-card .featured-meta {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ========== 品牌简介 ========== */
        .brand-intro-card {
            padding: 32px 28px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin: 30px 0;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .brand-intro-card p {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.9;
            margin-bottom: 8px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            margin: 20px 0 30px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 160, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-secondary);
            font-size: 13px;
            flex-shrink: 0;
        }

        .faq-question .faq-q {
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-heading);
            flex: 1;
        }

        .faq-question .faq-toggle {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-toggle {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px 60px;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        /* ========== CTA 条 ========== */
        .cta-strip {
            padding: 28px 32px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.10), rgba(13, 43, 94, 0.30));
            border: 1px solid rgba(0, 229, 160, 0.25);
            border-radius: var(--radius-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin: 30px 0 20px;
        }

        .cta-strip .cta-text {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-heading);
        }

        .cta-strip .btn {
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-strip .btn-primary {
            background: var(--color-secondary);
            color: #0A1628;
            box-shadow: 0 0 16px var(--color-glow-green);
            border: none;
        }

        .cta-strip .btn-primary:hover {
            background: #00F0B0;
            box-shadow: 0 0 24px var(--color-glow-green);
            transform: translateY(-1px);
        }

        /* ========== 相关专题 ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin: 20px 0 30px;
        }

        .topic-card {
            padding: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .topic-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        .topic-card .topic-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topic-card .topic-desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: var(--section-padding-mobile);
        }

        @media (min-width: 1024px) {
            .section {
                padding: var(--section-padding);
            }
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-title .title-accent {
            color: var(--color-secondary);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(7, 16, 30, 0.92);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 40px 0 24px;
            margin-top: 40px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-column h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--color-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .footer-links a {
            color: var(--color-text-muted);
            margin-right: 14px;
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .footer-links a:hover {
            color: var(--color-secondary);
        }

        .copyright {
            color: var(--color-text-muted);
        }

        .beian {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
            font-size: 11px;
            color: var(--color-text-muted);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .top-bar-header {
                flex-wrap: wrap;
            }

            .search-form input {
                width: 100px;
            }

            .auth-btns .btn-login,
            .auth-btns .btn-register {
                padding: 6px 12px;
                font-size: 13px;
            }

            .hamburger-btn {
                display: block;
            }

            .main-nav ul {
                display: none;
            }

            .main-nav ul.nav-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                border-bottom: 1px solid rgba(255, 255, 255, 0.12);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.50);
                padding: 8px 16px;
                max-height: 70vh;
                overflow-y: auto;
            }

            .main-nav ul.nav-open li {
                width: 100%;
            }

            .main-nav ul.nav-open>li>a {
                padding: 12px 8px;
                font-size: 15px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .dropdown-menu {
                display: none;
                position: static;
                background: transparent;
                border: none;
                box-shadow: none;
                padding: 4px 0 8px 16px;
            }

            .main-nav li.open .dropdown-menu {
                display: block;
            }

            .news-item {
                flex-direction: column;
            }

            .news-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 180px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .cta-strip {
                flex-direction: column;
                text-align: center;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
            }
        }

        @media (max-width: 520px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }

            .topics-grid {
                grid-template-columns: 1fr;
            }

            .search-form {
                display: none;
            }

            .auth-btns {
                gap: 6px;
            }

            .auth-btns .btn-login,
            .auth-btns .btn-register {
                padding: 6px 10px;
                font-size: 12px;
            }

            .brand-logo .logo-text .zh {
                font-size: 17px;
            }

            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 76px 0;
            --section-padding-mobile: 48px 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }

        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }

        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }

        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 160px;
            font-size: 14px;
            outline: none;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 12px;
            cursor: pointer;
            transition: color var(--transition);
        }

        .search-form button:hover {
            color: var(--color-secondary);
        }

        .login-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .login-btn:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.25);
        }

        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0;
        }

        .main-nav .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .main-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .main-nav ul>li {
            position: relative;
        }

        .main-nav ul>li>a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 12px 18px;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav ul>li>a:hover,
        .main-nav ul>li>a:focus {
            color: var(--color-secondary);
            border-bottom-color: var(--color-secondary);
        }

        .main-nav ul>li>a.active {
            color: var(--color-secondary);
            border-bottom-color: var(--color-secondary);
            font-weight: 600;
        }

        .main-nav ul>li .fa-chevron-down {
            font-size: 10px;
            margin-left: 2px;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: rgba(11, 30, 58, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
            border-radius: 10px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
            z-index: 100;
            padding: 8px 0;
        }

        .main-nav ul>li:hover .dropdown-content,
        .main-nav ul>li:focus-within .dropdown-content {
            display: block;
        }

        .dropdown-content a {
            display: block;
            padding: 10px 16px;
            color: var(--color-text);
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition);
        }

        .dropdown-content a:hover {
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.06);
        }

        .hamburger-menu {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 8px 12px;
            color: var(--color-text);
            font-size: 18px;
            cursor: pointer;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            padding: 24px 0 0;
            background: transparent;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: "›";
            color: var(--color-text-muted);
            font-size: 18px;
            line-height: 1;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-secondary);
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== 分类页首屏 ========== */
        .category-hero {
            padding: 28px 0 20px;
            background: transparent;
        }

        .category-hero .category-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.3);
            color: var(--color-secondary);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 12px;
        }

        .category-hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .category-hero .category-desc {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.8;
            max-width: 720px;
            margin: 0;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 56px 0;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0 0 28px;
            line-height: 1.8;
        }

        /* ========== 比分卡片栅格 ========== */
        .score-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 16px;
        }

        .score-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            padding: 20px 18px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .score-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .score-card .league-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-text-muted);
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            padding: 3px 8px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .score-card .status-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }

        .score-card .status-badge.live {
            background: rgba(255, 90, 60, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(255, 90, 60, 0.4);
            animation: pulse-live 2s infinite;
        }

        .score-card .status-badge.upcoming {
            background: rgba(0, 229, 160, 0.12);
            color: var(--color-secondary);
            border: 1px solid rgba(0, 229, 160, 0.35);
        }

        .score-card .status-badge.finished {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-text-muted);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        @keyframes pulse-live {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }

        .score-card .match-teams {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .score-card .team {
            flex: 1;
            text-align: left;
        }

        .score-card .team-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-heading);
            display: block;
            line-height: 1.4;
        }

        .score-card .team-score {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-secondary);
            text-shadow: 0 0 18px var(--color-glow-green);
            line-height: 1;
            display: block;
        }

        .score-card .team.right {
            text-align: right;
        }

        .score-card .score-separator {
            font-family: var(--font-mono);
            font-size: 18px;
            color: var(--color-text-muted);
            font-weight: 600;
            flex-shrink: 0;
        }

        .score-card .match-info {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .score-card .match-info i {
            font-size: 12px;
        }

        /* ========== 筛选/排序工具条 ========== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 14px 18px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            background: transparent;
            color: var(--color-text);
            font-size: 13px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover,
        .filter-tag.active {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .filter-sort select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 6px 12px;
            color: var(--color-text);
            font-size: 13px;
            cursor: pointer;
            outline: none;
            transition: border-color var(--transition);
        }

        .filter-sort select:focus {
            border-color: var(--color-secondary);
        }

        .filter-sort select option {
            background: #0B1E3A;
            color: var(--color-text);
        }

        /* ========== 精选推荐 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 16px;
        }

        .featured-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            padding: 18px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .featured-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .featured-card .featured-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--color-gold);
            color: #0A1628;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 8px;
            letter-spacing: 0.5px;
            box-shadow: 0 0 12px var(--color-glow-gold);
        }

        .featured-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 12px;
        }

        .featured-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .featured-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .featured-card .featured-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ========== 品牌简介短块 ========== */
        .brand-intro-section {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-section .section-title {
            margin-bottom: 14px;
        }

        .brand-intro-section p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-text);
            margin: 0;
        }

        /* ========== FAQ手风琴 ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 160, 0.3);
        }

        .faq-item.open {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(0, 229, 160, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            user-select: none;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-secondary);
            font-size: 13px;
            flex-shrink: 0;
        }

        .faq-question .faq-toggle {
            margin-left: auto;
            color: var(--color-text-muted);
            font-size: 12px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .faq-toggle {
            transform: rotate(180deg);
            color: var(--color-secondary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.9;
            margin: 0;
        }

        /* ========== CTA条 ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(13, 43, 94, 0.8) 0%, rgba(11, 30, 58, 0.9) 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .cta-section p {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 16px;
            line-height: 1.6;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-secondary);
            color: #0A1628;
            box-shadow: 0 0 18px var(--color-glow-green);
        }

        .btn-primary:hover {
            background: #00F0B0;
            box-shadow: 0 0 28px var(--color-glow-green);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
        }

        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.06);
        }

        /* ========== 相关专题/场景扩展 ========== */
        .related-topic-list {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .related-topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 12px;
            border: 1px solid var(--color-border);
            background: var(--color-bg-card);
            color: var(--color-text);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .related-topic-tag:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
            transform: translateY(-2px);
        }

        .related-topic-tag i {
            font-size: 12px;
            color: var(--color-secondary);
        }

        /* ========== 板块交替分隔 ========== */
        .section-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 18, 36, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 14px;
        }

        .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li a {
            font-size: 14px;
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--color-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-links a {
            color: var(--color-text-muted);
            text-decoration: underline;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-secondary);
        }

        .copyright {
            font-size: 13px;
        }

        .beian {
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            gap: 4px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .score-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-padding: 48px 0;
            }

            .section {
                padding: 40px 0;
            }

            .top-bar-header {
                flex-wrap: nowrap;
                gap: 10px;
            }

            .search-form {
                display: none;
            }

            .hamburger-menu {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .main-nav ul {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 0;
            }

            .main-nav ul.open {
                display: flex;
            }

            .main-nav ul>li {
                width: 100%;
            }

            .main-nav ul>li>a {
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .dropdown-content {
                position: static;
                display: none;
                min-width: 100%;
                background: rgba(255, 255, 255, 0.04);
                border: none;
                border-radius: 0;
                box-shadow: none;
                padding: 0;
            }

            .main-nav ul>li:hover .dropdown-content,
            .main-nav ul>li:focus-within .dropdown-content {
                display: block;
            }

            .dropdown-content a {
                padding: 10px 28px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .category-hero {
                padding: 20px 0 10px;
            }

            .category-hero h1 {
                font-size: 22px;
            }

            .category-hero .category-desc {
                font-size: 14px;
            }

            .score-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .score-card .team-score {
                font-size: 26px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 12px 14px;
            }

            .filter-sort {
                width: 100%;
                justify-content: space-between;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .beian {
                justify-content: center;
                text-align: center;
            }

            .section-title {
                font-size: 20px;
            }

            .cta-section p {
                font-size: 16px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .brand-logo .logo-text .zh {
                font-size: 17px;
            }

            .brand-logo .logo-text .en {
                font-size: 9px;
                letter-spacing: 1px;
            }

            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .container {
                padding: 0 12px;
            }

            .score-card {
                padding: 16px 14px;
            }

            .score-card .team-score {
                font-size: 22px;
            }

            .score-card .team-name {
                font-size: 14px;
            }

            .category-hero h1 {
                font-size: 20px;
            }

            .btn {
                padding: 8px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }
        section {
            padding: var(--section-padding);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--color-secondary);
            margin-bottom: 14px;
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--color-secondary);
            box-shadow: 0 0 10px var(--color-glow-green);
            border-radius: 2px;
        }
        h1,
        h2,
        h3,
        h4 {
            color: var(--color-text-heading);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 18px;
        }
        h1 {
            font-size: 32px;
            letter-spacing: 0.5px;
        }
        h2 {
            font-size: 26px;
            margin-bottom: 20px;
        }
        h3 {
            font-size: 19px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 17px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 16px;
        }
        .text-muted {
            color: var(--color-text-muted);
        }
        .text-secondary {
            color: var(--color-secondary);
        }
        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }
        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }
        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }
        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 150px;
            font-size: 14px;
            outline: none;
        }
        .search-form input::placeholder {
            color: var(--color-text-muted);
        }
        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 12px;
            cursor: pointer;
            transition: color var(--transition);
            font-size: 14px;
        }
        .search-form button:hover {
            color: var(--color-secondary);
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.20);
            color: var(--color-text-heading);
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            box-shadow: 0 0 14px rgba(0, 229, 160, 0.2);
        }
        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(10, 22, 40, 0.65);
        }
        .main-nav .container {
            padding: 0 16px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }
        .main-nav ul::-webkit-scrollbar {
            height: 3px;
        }
        .main-nav ul::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 3px;
        }
        .main-nav li {
            position: relative;
            flex-shrink: 0;
        }
        .main-nav li>a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .main-nav li>a:hover,
        .main-nav li>a:focus {
            color: var(--color-secondary);
            border-bottom-color: var(--color-secondary);
        }
        .main-nav li>a.active {
            color: var(--color-secondary);
            border-bottom-color: var(--color-secondary);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--color-text-heading);
            font-size: 20px;
            border-radius: 8px;
            padding: 6px 12px;
            cursor: pointer;
            margin-left: auto;
            transition: border-color var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--color-secondary);
        }
        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            padding: 16px 0 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li+li::before {
            content: '›';
            color: var(--color-text-muted);
            font-size: 18px;
            margin-right: 4px;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--color-secondary);
        }
        .breadcrumb .current {
            color: var(--color-secondary);
            font-weight: 600;
        }
        /* ========== PAGE HEADER ========== */
        .page-header {
            padding: 40px 0 30px;
            background: linear-gradient(180deg, rgba(13, 43, 94, 0.30) 0%, transparent 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .page-header .inner {
            max-width: 820px;
        }
        .page-header h1 {
            font-size: 34px;
            margin-bottom: 14px;
        }
        .page-header .lead {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.9;
            margin-bottom: 0;
        }
        /* ========== VIDEO GRID ========== */
        .video-grid-section {
            padding-top: 40px;
        }
        .video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .video-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .video-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 229, 160, 0.35);
            background: var(--color-bg-card-hover);
        }
        .video-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .video-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.5s ease;
        }
        .video-card:hover .video-thumb img {
            transform: scale(1.04);
        }
        .video-thumb .play-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(10, 22, 40, 0.35);
            transition: background var(--transition);
        }
        .video-card:hover .play-overlay {
            background: rgba(10, 22, 40, 0.15);
        }
        .play-overlay .play-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.85);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A1628;
            font-size: 20px;
            box-shadow: 0 0 24px var(--color-glow-green);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .video-card:hover .play-icon {
            transform: scale(1.08);
            box-shadow: 0 0 40px rgba(0, 229, 160, 0.65);
        }
        .video-duration {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(10, 22, 40, 0.85);
            color: #FFFFFF;
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 12px;
            font-family: var(--font-mono);
            letter-spacing: 0.5px;
        }
        .video-category-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255, 90, 60, 0.90);
            color: #FFFFFF;
            padding: 3px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .video-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .video-card-body h3 {
            font-size: 17px;
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .video-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .video-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        /* ========== FILTER BAR ========== */
        .filter-bar-section {
            padding: 24px 0 8px;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 14px 20px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }
        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--color-text);
            background: transparent;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }
        .filter-tag.active {
            background: var(--color-secondary);
            color: #0A1628;
            border-color: var(--color-secondary);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.35);
        }
        .sort-select-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
            font-size: 14px;
        }
        .sort-select {
            background: rgba(10, 22, 40, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--color-text);
            padding: 7px 14px;
            border-radius: 8px;
            font-size: 14px;
            cursor: pointer;
            transition: border-color var(--transition);
            outline: none;
            appearance: auto;
        }
        .sort-select:hover,
        .sort-select:focus {
            border-color: var(--color-secondary);
        }
        .sort-select option {
            background: #0A1628;
            color: var(--color-text);
        }
        /* ========== FEATURED ========== */
        .featured-section {
            padding: 40px 0;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .featured-card {
            display: flex;
            gap: 14px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 14px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            cursor: pointer;
        }
        .featured-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 200, 0, 0.35);
        }
        .featured-thumb {
            width: 100px;
            height: 68px;
            flex-shrink: 0;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }
        .featured-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 10px;
        }
        .featured-thumb .duration {
            position: absolute;
            bottom: 4px;
            right: 4px;
            background: rgba(10, 22, 40, 0.85);
            color: #FFFFFF;
            padding: 1px 6px;
            border-radius: 4px;
            font-size: 10px;
            font-family: var(--font-mono);
        }
        .featured-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .featured-info h3 {
            font-size: 14px;
            margin-bottom: 4px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-info .f-meta {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .featured-badge {
            display: inline-block;
            background: var(--color-gold);
            color: #0A1628;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        /* ========== BRAND INTRO ========== */
        .brand-intro-section {
            padding: 40px 0;
        }
        .brand-intro-card {
            display: flex;
            gap: 28px;
            align-items: flex-start;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }
        .brand-intro-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-secondary);
        }
        .brand-intro-card p {
            margin-bottom: 0;
            color: var(--color-text);
            font-size: 15px;
            line-height: 1.85;
        }
        .brand-intro-card p strong {
            color: var(--color-text-heading);
        }
        /* ========== FAQ ========== */
        .faq-section {
            padding: 40px 0;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 860px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 160, 0.30);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            color: var(--color-text-heading);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--color-secondary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-secondary);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-question .faq-text {
            flex: 1;
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            color: var(--color-text-muted);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-toggle {
            transform: rotate(180deg);
            color: var(--color-secondary);
        }
        .faq-item.open .faq-icon {
            background: var(--color-secondary);
            color: #0A1628;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 1.85;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        /* ========== CTA BAR ========== */
        .cta-bar-section {
            padding: 40px 0;
        }
        .cta-bar {
            background: linear-gradient(135deg, rgba(13, 43, 94, 0.85) 0%, rgba(10, 22, 40, 0.92) 100%);
            border: 1px solid rgba(0, 229, 160, 0.22);
            border-radius: var(--radius-card);
            padding: 30px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }
        .cta-bar .cta-text {
            flex: 1;
            min-width: 220px;
        }
        .cta-bar .cta-text h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }
        .cta-bar .cta-text p {
            color: var(--color-text-muted);
            margin-bottom: 0;
            font-size: 15px;
        }
        .btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--color-secondary);
            color: #0A1628;
            box-shadow: 0 0 18px rgba(0, 229, 160, 0.40);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #00F0B0;
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.60);
            color: #0A1628;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(255, 90, 60, 0.40);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #FF6E52;
            box-shadow: 0 0 32px rgba(255, 90, 60, 0.55);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.30);
            color: var(--color-text-heading);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            box-shadow: 0 0 14px rgba(0, 229, 160, 0.2);
        }
        /* ========== RELATED TOPICS ========== */
        .topics-section {
            padding: 40px 0;
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .topic-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 20px 22px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .topic-card:hover {
            transform: translateY(-3px);
            border-color: rgba(255, 200, 0, 0.35);
            box-shadow: var(--shadow-card);
        }
        .topic-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 200, 0, 0.10);
            border: 1px solid rgba(255, 200, 0, 0.22);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-gold);
        }
        .topic-info h3 {
            font-size: 15px;
            margin-bottom: 3px;
        }
        .topic-info p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }
        .load-more-wrap {
            display: flex;
            justify-content: center;
            margin-top: 28px;
        }
        .btn-load-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-load-more:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.2);
            background: rgba(255, 255, 255, 0.04);
        }
        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(7, 16, 32, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 52px 0 30px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-column h4 {
            font-size: 15px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-column ul a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-column ul a:hover {
            color: var(--color-secondary);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            text-align: center;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links a {
            color: var(--color-text-muted);
            font-size: 13px;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-links a:hover {
            color: var(--color-secondary);
        }
        .copyright {
            color: var(--color-text-muted);
            font-size: 13px;
        }
        .beian {
            color: var(--color-text-muted);
            font-size: 12px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            justify-content: center;
            gap: 4px;
        }
        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile);
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            .top-bar-header {
                padding: 10px 0;
            }
            .search-form {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                gap: 0;
                padding: 8px 0;
            }
            .main-nav ul.open {
                display: flex;
            }
            .main-nav li>a {
                padding: 10px 12px;
                font-size: 14px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .main-nav li>a.active {
                border-bottom-color: var(--color-secondary);
            }
            .page-header h1 {
                font-size: 24px;
            }
            .video-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .brand-intro-card {
                flex-direction: column;
                gap: 14px;
                padding: 22px 20px;
            }
            .cta-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .btn-group {
                width: 100%;
            }
            .btn {
                flex: 1;
                padding: 10px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .top-bar-header {
                gap: 10px;
            }
            .brand-logo .logo-text .zh {
                font-size: 17px;
            }
            .brand-logo .logo-text .en {
                font-size: 8px;
            }
            .btn-login {
                padding: 6px 12px;
                font-size: 13px;
            }
            .page-header h1 {
                font-size: 22px;
            }
            .video-card-body {
                padding: 14px 16px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 13px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .beian {
                font-size: 11px;
                line-height: 1.7;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 76px 0;
            --section-padding-mobile: 48px 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* HEADER */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }
        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
            text-decoration: none;
        }
        .brand-logo:hover {
            color: var(--color-text-heading);
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }
        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }
        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 140px;
            font-size: 14px;
            outline: none;
        }
        .search-form input::placeholder {
            color: var(--color-text-muted);
        }
        .search-form button {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text-muted);
            cursor: pointer;
            transition: color var(--transition);
        }
        .search-form button:hover {
            color: var(--color-secondary);
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition), border-color var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            text-decoration: none;
        }
        .btn-login i {
            font-size: 13px;
        }

        /* NAV */
        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(8, 17, 33, 0.70);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            align-items: center;
            flex-wrap: wrap;
        }
        .main-nav li {
            margin: 0;
            position: relative;
        }
        .main-nav li > a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 14px 18px;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition);
            text-decoration: none;
        }
        .main-nav li > a:hover,
        .main-nav li > a.active {
            color: var(--color-secondary);
        }
        .main-nav li > a.active::after {
            content: '';
            position: absolute;
            bottom: 8px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--color-glow-green);
        }
        .main-nav li.has-dropdown {
            position: relative;
        }
        .main-nav li.has-dropdown > a .fa-chevron-down {
            font-size: 10px;
            transition: transform var(--transition);
        }
        .main-nav li.has-dropdown:hover > a .fa-chevron-down {
            transform: rotate(180deg);
        }
        .dropdown-panel {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: rgba(10, 22, 40, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.50);
            padding: 8px 0;
            display: none;
            z-index: 100;
        }
        .main-nav li.has-dropdown:hover .dropdown-panel {
            display: block;
        }
        .dropdown-panel a {
            display: block;
            padding: 10px 18px;
            color: var(--color-text);
            font-size: 14px;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .dropdown-panel a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-secondary);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            color: var(--color-text-heading);
            font-size: 20px;
            padding: 8px 14px;
            cursor: pointer;
            transition: border-color var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--color-secondary);
        }

        @media (max-width: 1024px) {
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .main-nav .container {
                flex-wrap: wrap;
            }
            .main-nav ul {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0 0 12px 0;
            }
            .main-nav ul.is-open {
                display: flex;
            }
            .main-nav li > a {
                padding: 12px 4px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }
            .main-nav li.has-dropdown .dropdown-panel {
                position: static;
                min-width: 0;
                background: transparent;
                border: none;
                box-shadow: none;
                padding: 4px 0 4px 20px;
                display: none;
            }
            .main-nav li.has-dropdown:hover .dropdown-panel {
                display: none;
            }
            .main-nav li.has-dropdown.is-open .dropdown-panel {
                display: block;
            }
            .main-nav li.has-dropdown > a .fa-chevron-down {
                margin-left: auto;
            }
        }

        /* BREADCRUMB */
        .breadcrumb-bar {
            background: rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 10px 0;
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--color-text-muted);
            transition: color var(--transition);
            text-decoration: none;
        }
        .breadcrumb-bar a:hover {
            color: var(--color-secondary);
        }
        .breadcrumb-bar .separator {
            color: rgba(255, 255, 255, 0.22);
        }
        .breadcrumb-bar .current {
            color: var(--color-secondary);
            font-weight: 500;
        }

        /* SECTION GENERAL */
        main section {
            padding: var(--section-padding);
        }
        @media (max-width: 640px) {
            main section {
                padding: var(--section-padding-mobile);
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-secondary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            display: inline-block;
            width: 22px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-glow-green);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin-bottom: 16px;
            line-height: 1.35;
            letter-spacing: 0.5px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 32px;
        }
        .glass-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .glass-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-secondary);
            color: #0A1628;
            box-shadow: 0 0 18px var(--color-glow-green);
        }
        .btn-primary:hover {
            background: #00F0B0;
            color: #0A1628;
            box-shadow: 0 0 28px var(--color-glow-green);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 0 18px var(--color-glow-orange);
        }
        .btn-accent:hover {
            background: #FF6B4A;
            color: #FFFFFF;
            box-shadow: 0 0 28px var(--color-glow-orange);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.50);
            color: var(--color-text-heading);
            box-shadow: none;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            text-decoration: none;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* CATEGORY H1 */
        .category-intro {
            padding: 44px 0 32px;
            background:
                radial-gradient(ellipse at 50% 0%, rgba(0, 229, 160, 0.08) 0%, transparent 60%),
                transparent;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .category-intro .container {
            max-width: 880px;
        }
        .category-intro h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .category-intro .cat-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* DATA ROWS */
        .data-row-card {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 22px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            margin-bottom: 14px;
            transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
            flex-wrap: wrap;
        }
        .data-row-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
            border-color: rgba(0, 229, 160, 0.35);
        }
        .team-badge {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.18), rgba(13, 43, 94, 0.6));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-secondary);
            flex-shrink: 0;
            border: 1px solid rgba(0, 229, 160, 0.25);
        }
        .team-info {
            flex: 1;
            min-width: 140px;
        }
        .team-info .team-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 2px;
        }
        .team-info .team-league {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .team-stats {
            display: flex;
            gap: 22px;
            align-items: center;
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: center;
            min-width: 60px;
        }
        .stat-item .stat-value {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-heading);
            letter-spacing: -0.5px;
        }
        .stat-item .stat-label {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 2px;
        }
        .stat-item.accent .stat-value {
            color: var(--color-secondary);
            text-shadow: 0 0 12px var(--color-glow-green);
        }
        .stat-item.warm .stat-value {
            color: var(--color-gold);
            text-shadow: 0 0 12px var(--color-glow-gold);
        }
        .trend-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--color-secondary);
            border: 1px solid rgba(0, 229, 160, 0.30);
        }
        .trend-badge.down {
            background: rgba(255, 90, 60, 0.12);
            color: var(--color-accent);
            border-color: rgba(255, 90, 60, 0.30);
        }
        .trend-badge.flat {
            background: rgba(255, 200, 0, 0.10);
            color: var(--color-gold);
            border-color: rgba(255, 200, 0, 0.28);
        }

        /* FILTER BAR */
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            margin-bottom: 24px;
        }
        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            font-size: 13px;
            border-radius: 20px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover,
        .filter-tag.active {
            background: rgba(0, 229, 160, 0.14);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .filter-sort select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            color: var(--color-text);
            padding: 6px 12px;
            font-size: 13px;
            cursor: pointer;
        }
        .filter-sort select:focus {
            border-color: var(--color-secondary);
        }

        /* FEATURED */
        .featured-card {
            padding: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            height: 100%;
        }
        .featured-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .featured-card .featured-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 700;
            color: #FFC800;
            background: rgba(255, 200, 0, 0.10);
            border: 1px solid rgba(255, 200, 0, 0.28);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .featured-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .featured-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* FAQ */
        .faq-accordion .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: background var(--transition);
        }
        .faq-accordion .faq-item:hover {
            background: var(--color-bg-card-hover);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--color-text-heading);
            font-size: 15px;
            transition: color var(--transition);
        }
        .faq-item .faq-question:hover {
            color: var(--color-secondary);
        }
        .faq-item .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.14);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-secondary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item .faq-question .faq-toggle {
            margin-left: auto;
            color: var(--color-text-muted);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 1.85;
        }
        .faq-item.is-open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px 20px;
        }
        .faq-item.is-open .faq-question .faq-toggle {
            transform: rotate(180deg);
            color: var(--color-secondary);
        }

        /* CTA BAR */
        .cta-bar {
            background: linear-gradient(135deg, rgba(11, 30, 58, 0.9) 0%, rgba(13, 43, 94, 0.85) 100%);
            border: 1px solid rgba(0, 229, 160, 0.22);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }
        .cta-bar .cta-text {
            flex: 1;
            min-width: 200px;
        }
        .cta-bar .cta-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin-bottom: 6px;
        }
        .cta-bar .cta-text p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }
        .cta-bar .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* TOPIC TAGS */
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 25px;
            font-size: 13px;
            color: var(--color-text);
            transition: all var(--transition);
            text-decoration: none;
        }
        .topic-tag:hover {
            background: rgba(0, 229, 160, 0.10);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* FOOTER */
        .site-footer {
            background: rgba(8, 17, 33, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .site-footer .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 14px;
        }
        .site-footer .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer .footer-column ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-column ul li a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-column ul li a:hover {
            color: var(--color-secondary);
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.38);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--color-secondary);
        }
        .site-footer .beian {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .category-intro h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }
            .data-row-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .team-stats {
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .top-bar-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .header-actions {
                width: 100%;
                justify-content: space-between;
            }
            .search-form input {
                width: 100px;
            }
            .category-intro h1 {
                font-size: 22px;
            }
            .section-title {
                font-size: 20px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cate-actions {
                flex-direction: column;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 64px 0;
            --section-padding-mobile: 44px 0;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media screen and (max-width: 639px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }

        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }

        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }

        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 160px;
            font-size: 14px;
            outline: none;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 12px;
            cursor: pointer;
            transition: color var(--transition);
            font-size: 14px;
        }

        .search-form button:hover {
            color: var(--color-secondary);
        }

        .btn-header-auth {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.20);
            background: transparent;
            color: var(--color-text);
            white-space: nowrap;
        }

        .btn-header-auth:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
        }

        .btn-header-auth.primary-auth {
            background: var(--color-secondary);
            border-color: var(--color-secondary);
            color: #0A1628;
            font-weight: 600;
            box-shadow: 0 0 16px var(--color-glow-green);
        }

        .btn-header-auth.primary-auth:hover {
            background: #00F0B0;
            border-color: #00F0B0;
            color: #0A1628;
            box-shadow: 0 0 24px var(--color-glow-green);
            transform: translateY(-1px);
        }

        /* ========== MAIN NAV ========== */
        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(10, 22, 40, 0.7);
        }

        .main-nav .container {
            position: relative;
        }

        .main-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav ul::-webkit-scrollbar {
            display: none;
        }

        .main-nav li {
            position: relative;
            flex-shrink: 0;
        }

        .main-nav li>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: color var(--transition), background var(--transition);
            position: relative;
            white-space: nowrap;
            cursor: pointer;
        }

        .main-nav li>a:hover,
        .main-nav li>a:focus {
            color: var(--color-text-heading);
        }

        .main-nav li>a.active {
            color: var(--color-secondary);
            font-weight: 600;
        }

        .main-nav li>a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px 2px 0 0;
            box-shadow: 0 0 12px var(--color-glow-green);
        }

        .main-nav li>.fa-chevron-down {
            font-size: 10px;
            margin-left: 2px;
            opacity: 0.7;
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: rgba(11, 30, 58, 0.97);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 8px 0;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.50);
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 1100;
            list-style: none;
            margin: 0;
        }

        .main-nav li:hover>.nav-dropdown,
        .main-nav li:focus-within>.nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 18px;
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-dropdown a:hover {
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
        }

        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.20);
            border-radius: 8px;
            color: var(--color-text);
            font-size: 22px;
            padding: 6px 12px;
            cursor: pointer;
            transition: all var(--transition);
            align-items: center;
            justify-content: center;
            line-height: 1;
        }

        .menu-toggle:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

        /* ========== MOBILE NAV DRAWER ========== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 1050;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.open {
            display: block;
            opacity: 1;
        }

        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            height: 100vh;
            background: rgba(10, 22, 40, 0.98);
            border-left: 1px solid rgba(255, 255, 255, 0.10);
            z-index: 1100;
            padding: 20px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.50);
        }

        .mobile-nav-drawer.open {
            right: 0;
        }

        .mobile-nav-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }

        .mobile-nav-drawer .drawer-close {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            font-size: 24px;
            cursor: pointer;
            transition: color var(--transition);
        }

        .mobile-nav-drawer .drawer-close:hover {
            color: var(--color-secondary);
        }

        .mobile-nav-drawer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-nav-drawer ul li {
            margin-bottom: 4px;
        }

        .mobile-nav-drawer ul li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 10px;
            transition: all var(--transition);
        }

        .mobile-nav-drawer ul li a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-secondary);
        }

        .mobile-nav-drawer ul li a.active {
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.08);
            font-weight: 600;
        }

        .mobile-nav-drawer .mobile-submenu {
            padding-left: 20px;
            margin-top: 2px;
        }

        .mobile-nav-drawer .mobile-submenu a {
            font-size: 14px;
            padding: 8px 12px;
            color: var(--color-text-muted);
        }

        /* ========== SECTION BASE ========== */
        main {
            min-height: 60vh;
        }

        section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 8px 0;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0;
            max-width: 680px;
        }

        .section-heading-accent {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-secondary);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-secondary);
        }

        .breadcrumb .separator {
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: var(--color-secondary);
            font-weight: 500;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            padding: 48px 0 32px;
            position: relative;
        }

        .category-hero .content-wrap {
            max-width: 820px;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 12px 0;
            line-height: 1.25;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== FILTER TOOLBAR ========== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 14px 18px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            margin-bottom: 28px;
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--color-text-muted);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.06);
        }

        .filter-tag.active {
            background: rgba(0, 229, 160, 0.12);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            font-weight: 600;
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
        }

        .filter-sort select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            color: var(--color-text);
            padding: 6px 12px;
            font-size: 14px;
            cursor: pointer;
            transition: border-color var(--transition);
            outline: none;
        }

        .filter-sort select:focus {
            border-color: var(--color-secondary);
        }

        .filter-sort select option {
            background: #0B1E3A;
            color: var(--color-text);
        }

        /* ========== ANALYSIS LIST ========== */
        .analysis-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .analysis-item {
            display: flex;
            gap: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition);
            cursor: pointer;
            align-items: flex-start;
        }

        .analysis-item:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .author-avatar {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0D2B5E, #1A3D6E);
            border: 2px solid rgba(255, 255, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-secondary);
            overflow: hidden;
        }

        .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
        }

        .analysis-content {
            flex: 1;
            min-width: 0;
        }

        .analysis-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 8px 0;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .analysis-excerpt {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 10px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .analysis-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .analysis-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .analysis-meta .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 229, 160, 0.10);
            color: var(--color-secondary);
            border: 1px solid rgba(0, 229, 160, 0.20);
        }

        .analysis-meta .tag.orange {
            background: rgba(255, 90, 60, 0.10);
            color: var(--color-accent);
            border-color: rgba(255, 90, 60, 0.20);
        }

        .analysis-meta .tag.gold {
            background: rgba(255, 200, 0, 0.10);
            color: var(--color-gold);
            border-color: rgba(255, 200, 0, 0.20);
        }

        .load-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.20);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
            margin-top: 20px;
            align-self: center;
        }

        .load-more-btn:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.06);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
        }

        /* ========== FEATURED ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .featured-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition);
            position: relative;
            cursor: pointer;
        }

        .featured-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .featured-card .card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .featured-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .featured-card:hover .card-image img {
            transform: scale(1.04);
        }

        .featured-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 0 14px var(--color-glow-orange);
            z-index: 2;
        }

        .featured-card .card-body {
            padding: 14px 16px 16px;
        }

        .featured-card .card-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 6px 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-card .card-meta {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-section {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .brand-intro-section .intro-text {
            font-size: 16px;
            line-height: 2;
            color: var(--color-text);
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.22);
        }

        .faq-item.active {
            border-color: var(--color-secondary);
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.12);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-secondary);
            font-weight: 700;
        }

        .faq-question-text {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            line-height: 1.5;
        }

        .faq-chevron {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-item.active .faq-chevron {
            transform: rotate(180deg);
            color: var(--color-secondary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 18px;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 18px 16px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
            padding-top: 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ========== CTA BAR ========== */
        .cta-bar {
            background: linear-gradient(135deg, rgba(13, 43, 94, 0.85), rgba(11, 30, 58, 0.95));
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .cta-bar .cta-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-heading);
            line-height: 1.5;
            flex: 1;
            min-width: 200px;
        }

        .cta-bar .cta-text span {
            color: var(--color-secondary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            background: var(--color-secondary);
            border: none;
            color: #0A1628;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 0 18px var(--color-glow-green);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #00F0B0;
            box-shadow: 0 0 28px var(--color-glow-green);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(0, 229, 160, 0.06);
        }

        /* ========== TOPIC CARDS ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 20px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition);
            cursor: pointer;
        }

        .topic-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .topic-card .topic-icon {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--color-secondary);
        }

        .topic-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 15, 30, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 0;
            margin-top: 60px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 14px 0 0;
            max-width: 320px;
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 14px 0;
        }

        .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-column ul li a:hover {
            color: var(--color-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-secondary);
        }

        .copyright {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .beian {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }

        /* ========== RESPONSIVE ========== */
        @media screen and (max-width: 1023px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media screen and (max-width: 767px) {
            .menu-toggle {
                display: flex;
            }

            .main-nav ul {
                display: none;
            }

            .search-form input {
                width: 100px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            section {
                padding: var(--section-padding-mobile);
            }

            .analysis-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }

            .author-avatar {
                width: 44px;
                height: 44px;
                font-size: 16px;
            }

            .analysis-title {
                font-size: 15px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media screen and (max-width: 639px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }

            .topic-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .cta-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }

            .cta-bar .cta-text {
                font-size: 16px;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .brand-logo .logo-text .zh {
                font-size: 17px;
            }

            .search-form input {
                width: 80px;
                font-size: 13px;
            }

            .header-actions {
                gap: 6px;
            }

            .btn-header-auth {
                padding: 6px 10px;
                font-size: 12px;
            }

            .btn-header-auth.primary-auth {
                padding: 6px 10px;
                font-size: 12px;
            }

            .brand-intro-section {
                padding: 24px 18px;
            }

            .faq-question {
                padding: 14px 14px;
            }

            .faq-answer {
                padding: 0 14px;
            }

            .faq-item.active .faq-answer {
                padding: 0 14px 14px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0B1E3A;
            --color-primary-light: #0D2B5E;
            --color-secondary: #00E5A0;
            --color-accent: #FF5A3C;
            --color-gold: #FFC800;
            --color-bg: #0A1628;
            --color-bg-card: rgba(255, 255, 255, 0.06);
            --color-bg-card-hover: rgba(255, 255, 255, 0.10);
            --color-border: rgba(255, 255, 255, 0.14);
            --color-text: #E8EEF7;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #8BA0C0;
            --color-glow-green: rgba(0, 229, 160, 0.45);
            --color-glow-orange: rgba(255, 90, 60, 0.45);
            --color-glow-gold: rgba(255, 200, 0, 0.40);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.50);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-padding: 76px 0;
            --section-padding-mobile: 48px 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(13, 43, 94, 0.55) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(11, 30, 58, 0.8) 0%, transparent 50%),
                linear-gradient(180deg, #0A1628 0%, #0B1E3A 40%, #0A1628 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: #00F0B0;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .container {
            padding: 0 16px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
        }

        .top-bar-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-heading);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0A1628;
            box-shadow: 0 0 20px var(--color-glow-green);
            flex-shrink: 0;
        }

        .brand-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-logo .logo-text .zh {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }

        .brand-logo .logo-text .en {
            font-size: 10px;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .search-form input {
            background: transparent;
            border: none;
            padding: 8px 14px;
            color: var(--color-text);
            width: 160px;
            font-size: 14px;
            outline: none;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form button {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            padding: 8px 14px;
            cursor: pointer;
            transition: color var(--transition);
        }

        .search-form button:hover {
            color: var(--color-secondary);
        }

        .user-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .user-actions .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.20);
            color: var(--color-text);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .user-actions .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
        }

        .user-actions .btn-register {
            background: var(--color-secondary);
            border: 1px solid var(--color-secondary);
            color: #0A1628;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 14px var(--color-glow-green);
            transition: all var(--transition);
        }

        .user-actions .btn-register:hover {
            background: #00F0B0;
            box-shadow: 0 0 22px var(--color-glow-green);
            transform: translateY(-1px);
        }

        .main-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 8px 0;
        }

        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0;
            flex-wrap: nowrap;
        }

        .main-nav ul li {
            position: relative;
            margin: 0;
        }

        .main-nav ul li > a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            border-radius: 6px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav ul li > a:hover,
        .main-nav ul li > a:focus {
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
        }

        .main-nav ul li > a.active {
            color: var(--color-secondary);
            position: relative;
            font-weight: 600;
        }

        .main-nav ul li > a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-glow-green);
        }

        .main-nav .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 160px;
            background: rgba(11, 30, 58, 0.96);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 8px 0;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.50);
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 100;
        }

        .main-nav ul li:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .main-nav .dropdown-menu a {
            display: block;
            padding: 8px 16px;
            color: var(--color-text);
            font-size: 14px;
            transition: all var(--transition);
        }

        .main-nav .dropdown-menu a:hover {
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.20);
            color: var(--color-text);
            width: 42px;
            height: 42px;
            border-radius: 8px;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .mobile-nav-toggle:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-nav {
            margin: 20px 0 0;
            font-size: 14px;
            color: var(--color-text-muted);
        }

        .breadcrumb-nav a {
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-secondary);
        }

        .breadcrumb-nav .separator {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb-nav .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== Page Header ========== */
        .page-header {
            padding: 32px 0 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }

        .page-header .lead {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 800px;
            margin: 0;
            line-height: 1.85;
        }

        /* ========== Sections Common ========== */
        section {
            padding: var(--section-padding);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0 0 28px;
            line-height: 1.7;
        }

        /* ========== Wiki Cards ========== */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .wiki-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .wiki-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-secondary), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .wiki-card:hover {
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .wiki-card:hover::before {
            opacity: 1;
        }

        .wiki-card .wiki-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 229, 160, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-secondary);
            margin-bottom: 16px;
        }

        .wiki-card .wiki-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 229, 160, 0.10);
            color: var(--color-secondary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .wiki-card .wiki-tag.blue {
            background: rgba(0, 184, 212, 0.12);
            color: #4DD0E1;
        }

        .wiki-card .wiki-tag.gold {
            background: rgba(255, 200, 0, 0.12);
            color: var(--color-gold);
        }

        .wiki-card .wiki-tag.orange {
            background: rgba(255, 90, 60, 0.12);
            color: var(--color-accent);
        }

        .wiki-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 10px;
            line-height: 1.45;
        }

        .wiki-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 14px;
            line-height: 1.75;
        }

        .wiki-card .wiki-date {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .wiki-card .wiki-date i {
            font-size: 12px;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 14px 20px;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .filter-tag {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--color-text-muted);
            background: transparent;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

        .filter-tag.active {
            background: rgba(0, 229, 160, 0.12);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

        .sort-select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            padding: 8px 14px;
            color: var(--color-text);
            font-size: 14px;
            cursor: pointer;
            outline: none;
            transition: border-color var(--transition);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238BA0C0' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
        }

        .sort-select:focus {
            border-color: var(--color-secondary);
        }

        .sort-select option {
            background: #0B1E3A;
            color: var(--color-text);
        }

        /* ========== Featured Cards ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .featured-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 14px;
            padding: 20px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            cursor: pointer;
        }

        .featured-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(255, 200, 0, 0.35);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .featured-card .featured-badge {
            display: inline-block;
            background: var(--color-gold);
            color: #0A1628;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .featured-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 8px;
            line-height: 1.45;
        }

        .featured-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.65;
        }

        /* ========== Brand Intro ========== */
        .brand-intro-block {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .brand-intro-block .intro-text {
            flex: 1;
        }

        .brand-intro-block .intro-text h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 12px;
        }

        .brand-intro-block .intro-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.85;
            margin: 0;
        }

        .brand-intro-block .intro-image {
            width: 280px;
            flex-shrink: 0;
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }

        .brand-intro-block .intro-image img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 14px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 160, 0.30);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-secondary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            flex: 1;
        }

        .faq-question .faq-toggle {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .faq-toggle {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
            padding-left: 44px;
        }

        /* ========== CTA ========== */
        .cta-strip {
            background: linear-gradient(135deg, rgba(13, 43, 94, 0.85), rgba(11, 30, 58, 0.95));
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-strip::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(0, 229, 160, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-strip h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-heading);
            margin: 0 0 12px;
            position: relative;
        }

        .cta-strip p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0 0 20px;
            position: relative;
        }

        .cta-strip .btn-primary {
            position: relative;
            display: inline-block;
            background: var(--color-secondary);
            color: #0A1628;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 0 18px var(--color-glow-green);
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }

        .cta-strip .btn-primary:hover {
            background: #00F0B0;
            box-shadow: 0 0 28px var(--color-glow-green);
            transform: translateY(-2px);
        }

        /* ========== Related Topics ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .topic-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 14px;
            padding: 20px;
            transition: all var(--transition);
            text-align: center;
        }

        .topic-card:hover {
            background: var(--color-bg-card-hover);
            border-color: rgba(0, 229, 160, 0.30);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-secondary);
            margin: 0 auto 12px;
        }

        .topic-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 8px;
        }

        .topic-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.65;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #080F1E;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 20px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin: 0 0 14px;
        }

        .footer-column ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-column ul li {
            margin-bottom: 8px;
        }

        .footer-column ul li a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--color-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--color-text-muted);
            font-size: 13px;
            text-decoration: underline;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-secondary);
        }

        .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.30);
        }

        .beian {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.30);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .wiki-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .brand-intro-block {
                flex-direction: column;
                padding: 28px;
            }

            .brand-intro-block .intro-image {
                width: 100%;
            }

            .brand-intro-block .intro-image img {
                height: 160px;
            }

            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile);
            }

            .page-header {
                padding: 24px 0 28px;
            }

            .page-header h1 {
                font-size: 26px;
            }

            .section-title {
                font-size: 22px;
            }

            .wiki-grid {
                grid-template-columns: 1fr;
            }

            .featured-grid {
                grid-template-columns: 1fr;
            }

            .topics-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .beian {
                flex-wrap: wrap;
                gap: 4px;
            }

            .mobile-nav-toggle {
                display: flex;
            }

            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                border-bottom: 1px solid rgba(255, 255, 255, 0.10);
                padding: 12px 16px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.60);
                z-index: 99;
            }

            .main-nav ul.open {
                display: flex;
            }

            .main-nav ul li {
                width: 100%;
            }

            .main-nav ul li > a {
                padding: 12px 8px;
                justify-content: space-between;
                font-size: 15px;
            }

            .main-nav ul li > a.active::after {
                display: none;
            }

            .main-nav .dropdown-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                background: transparent;
                padding: 0 0 0 16px;
                min-width: auto;
            }

            .main-nav ul li:hover .dropdown-menu {
                opacity: 1;
                visibility: visible;
                transform: none;
            }

            .main-nav .dropdown-menu a {
                padding: 6px 8px;
                font-size: 13px;
            }

            .search-form input {
                width: 100px;
            }

            .user-actions .btn-login,
            .user-actions .btn-register {
                padding: 6px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }

            .brand-logo .logo-text .zh {
                font-size: 17px;
            }

            .brand-logo .logo-text .en {
                font-size: 8px;
                letter-spacing: 1px;
            }

            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .top-bar-header {
                gap: 10px;
            }

            .search-form input {
                width: 70px;
                font-size: 12px;
                padding: 6px 10px;
            }

            .search-form button {
                padding: 6px 10px;
            }

            .user-actions {
                gap: 6px;
            }

            .user-actions .btn-login,
            .user-actions .btn-register {
                padding: 6px 10px;
                font-size: 12px;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 20px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }

            .sort-select {
                width: 100%;
            }

            .brand-intro-block {
                padding: 20px;
            }

            .brand-intro-block .intro-text h2 {
                font-size: 19px;
            }

            .cta-strip {
                padding: 24px 18px;
            }

            .cta-strip h2 {
                font-size: 20px;
            }

            .faq-question {
                padding: 14px 16px;
            }

            .faq-answer p {
                padding-left: 0;
                font-size: 13px;
            }
        }