/* roulang page: index */
:root {
            --bg-primary: #0a0a10;
            --bg-secondary: #111118;
            --bg-card: #16161f;
            --bg-card-hover: #1c1c28;
            --border-subtle: #1e1e2e;
            --border-glow: #2a2040;
            --neon-purple: #a855f7;
            --neon-purple-light: #c084fc;
            --neon-purple-glow: rgba(168, 85, 247, 0.45);
            --neon-cyan: #06b6d4;
            --neon-cyan-light: #22d3ee;
            --neon-cyan-glow: rgba(6, 182, 212, 0.4);
            --neon-pink: #ec4899;
            --neon-pink-glow: rgba(236, 72, 153, 0.4);
            --text-primary: #e2e8f0;
            --text-secondary: #cbd5e1;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.55);
            --shadow-glow-purple: 0 0 24px var(--neon-purple-glow);
            --shadow-glow-cyan: 0 0 20px var(--neon-cyan-glow);
            --shadow-glow-pink: 0 0 22px var(--neon-pink-glow);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        button, input, textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 10, 16, 0.92);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 30px rgba(0,0,0,0.5);
            border-bottom-color: var(--border-glow);
        }

        .site-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-purple), var(--neon-cyan), var(--neon-pink), var(--neon-purple));
            opacity: 0.8;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 32px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.4rem;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            flex-shrink: 0;
            position: relative;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: var(--shadow-glow-purple);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(135deg, var(--neon-purple-light), var(--neon-cyan-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(168, 85, 247, 0.08);
        }

        .main-nav a.active {
            color: #fff;
            background: rgba(168, 85, 247, 0.15);
            box-shadow: 0 0 14px var(--neon-purple-glow);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 18px var(--neon-purple-glow);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 30px var(--neon-pink-glow);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-primary);
            font-size: 1.5rem;
            line-height: 1;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
            background: linear-gradient(180deg, #0a0a10 0%, #111118 40%, #0f0f18 100%);
        }

        .hero-bg-image {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 20%, rgba(0,0,0,0.15) 70%, transparent 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 20%, rgba(0,0,0,0.15) 70%, transparent 100%);
        }

        .hero-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: radial-gradient(ellipse at 30% 50%, rgba(168,85,247,0.06) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(6,182,212,0.05) 0%, transparent 50%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            padding: 60px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 20px;
            background: rgba(168,85,247,0.1);
            border: 1px solid rgba(168,85,247,0.25);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--neon-purple-light);
            margin-bottom: 24px;
        }

        .hero-badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--neon-cyan);
            box-shadow: 0 0 8px var(--neon-cyan-glow);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 0.6; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.5); }
        }

        .hero-title {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--neon-purple-light), var(--neon-cyan-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 480px;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 22px var(--neon-purple-glow);
            transition: all var(--transition-fast);
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px var(--neon-pink-glow);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-outline:hover {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 18px var(--neon-cyan-glow);
            color: var(--neon-cyan-light);
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 48px;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--neon-cyan);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto;
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-purple), var(--neon-cyan));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

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

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(168,85,247,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            color: var(--neon-purple-light);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            min-height: 240px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            align-items: flex-end;
        }

        .category-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-4px);
        }

        .category-card-img {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.55;
            transition: opacity var(--transition-smooth), transform var(--transition-smooth);
        }

        .category-card:hover .category-card-img {
            opacity: 0.7;
            transform: scale(1.05);
        }

        .category-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10,10,16,0.95) 20%, rgba(10,10,16,0.3) 60%, transparent 100%);
        }

        .category-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }

        .category-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(6,182,212,0.15);
            color: var(--neon-cyan-light);
            margin-bottom: 10px;
        }

        .category-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .category-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .cms-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .cms-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .cms-card-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-secondary);
        }

        .cms-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cms-card-meta {
            display: flex;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .cms-card-cat {
            color: var(--neon-cyan);
            font-weight: 500;
        }

        .cms-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
            flex: 1;
        }

        .cms-card h3 a {
            color: inherit;
        }

        .cms-card h3 a:hover {
            color: var(--neon-purple-light);
        }

        .cms-card-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .cms-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            grid-column: 1 / -1;
        }

        /* ========== RANKING TABLE ========== */
        .ranking-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }

        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .ranking-table thead {
            background: rgba(168,85,247,0.08);
        }

        .ranking-table th {
            padding: 14px 16px;
            text-align: left;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-subtle);
        }

        .ranking-table td {
            padding: 14px 16px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            vertical-align: middle;
        }

        .ranking-table tbody tr {
            transition: background var(--transition-fast);
        }

        .ranking-table tbody tr:hover {
            background: rgba(168,85,247,0.04);
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.85rem;
        }

        .rank-badge.top1 { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #000; }
        .rank-badge.top2 { background: linear-gradient(135deg, #94a3b8, #64748b); color: #fff; }
        .rank-badge.top3 { background: linear-gradient(135deg, #d97706, #b45309); color: #fff; }
        .rank-badge.normal { background: var(--bg-secondary); color: var(--text-muted); }

        .rank-game-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            background: var(--bg-secondary);
        }

        /* ========== STEPS ========== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step-counter;
        }

        .step-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            counter-increment: step-counter;
            transition: all var(--transition-smooth);
        }

        .step-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-purple);
        }

        .step-item::before {
            content: counter(step-counter);
            position: absolute;
            top: -16px;
            right: 20px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-glow-purple);
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            background: none;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .faq-arrow {
            font-size: 1.2rem;
            transition: transform var(--transition-fast);
            color: var(--neon-purple-light);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 600px;
            height: 600px;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(168,85,247,0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0;
            text-align: center;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--neon-purple-light);
        }

        .footer-copy {
            font-size: 0.8rem;
            color: var(--text-dim);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-bg-image {
                width: 45%;
                opacity: 0.35;
            }
            .hero-content {
                max-width: 500px;
            }
            .category-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
            .cms-list {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10,10,16,0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: inline-flex;
                margin-top: 8px;
            }
            .hero-bg-image {
                width: 100%;
                opacity: 0.22;
            }
            .hero-content {
                max-width: 100%;
                text-align: center;
                padding: 40px 0;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
                gap: 24px;
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .section {
                padding: 56px 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .cms-list {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .ranking-table-wrap {
                border-radius: var(--radius-md);
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary, .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .feature-card {
                padding: 22px 18px;
            }
            .category-card {
                min-height: 200px;
            }
            .footer-links {
                gap: 12px;
            }
        }

/* roulang page: category1 */
/* ============ 设计变量体系 ============ */
        :root {
            /* 霓虹主色系 */
            --neon-cyan: #00d4ff;
            --neon-cyan-glow: rgba(0, 212, 255, 0.6);
            --neon-cyan-subtle: rgba(0, 212, 255, 0.15);
            --neon-purple: #b347ea;
            --neon-purple-glow: rgba(179, 71, 234, 0.55);
            --neon-purple-subtle: rgba(179, 71, 234, 0.12);
            --neon-pink: #ff2d78;
            --neon-pink-glow: rgba(255, 45, 120, 0.5);

            /* 背景层级 */
            --bg-deep: #06060d;
            --bg-primary: #0a0a15;
            --bg-surface: #10101f;
            --bg-card: #151526;
            --bg-card-hover: #1a1a32;
            --bg-elevated: #1c1c35;

            /* 文字层级 */
            --text-primary: #e8e8f5;
            --text-secondary: #b8b8cc;
            --text-muted: #6e6e85;
            --text-on-neon: #0a0a15;

            /* 边框 */
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-card: rgba(255, 255, 255, 0.08);
            --border-neon: rgba(0, 212, 255, 0.3);
            --border-neon-strong: rgba(0, 212, 255, 0.55);

            /* 圆角 */
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;

            /* 阴影 */
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
            --shadow-neon-cyan: 0 0 20px rgba(0, 212, 255, 0.25), 0 0 60px rgba(0, 212, 255, 0.1);
            --shadow-neon-purple: 0 0 20px rgba(179, 71, 234, 0.25), 0 0 60px rgba(179, 71, 234, 0.08);
            --shadow-card-glow: 0 0 30px rgba(0, 212, 255, 0.08);

            /* 间距 */
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 20px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 80px;

            /* 过渡 */
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

            /* 字体 */
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ============ 全局霓虹光效背景线条 ============ */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(0, 212, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 60%, rgba(179, 71, 234, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(255, 45, 120, 0.02) 0%, transparent 50%);
        }

        /* ============ Header / 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 10, 21, 0.88);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            transition: all var(--transition-base);
        }

        .site-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg,
                    transparent 0%,
                    var(--neon-cyan) 20%,
                    var(--neon-purple) 50%,
                    var(--neon-cyan) 80%,
                    transparent 100%);
            opacity: 0.7;
            z-index: 1;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            position: relative;
            z-index: 2;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .logo-link:hover {
            transform: scale(1.03);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: var(--text-on-neon);
            font-weight: 900;
            font-size: 1.3rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-neon-cyan);
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .main-nav a:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 12px var(--neon-cyan-glow);
        }

        .main-nav a.active {
            color: var(--neon-cyan);
            background: var(--neon-cyan-subtle);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
            text-shadow: 0 0 8px var(--neon-cyan-glow);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--neon-cyan);
            border-radius: var(--radius-full);
            box-shadow: 0 0 8px var(--neon-cyan-glow), 0 0 20px var(--neon-cyan-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--neon-cyan), #0098cc);
            color: var(--text-on-neon) !important;
            font-weight: 700;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.35), 0 4px 16px rgba(0, 0, 0, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
            text-shadow: none !important;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.55), 0 6px 24px rgba(0, 0, 0, 0.5);
            transform: translateY(-2px);
            color: #fff !important;
        }

        .nav-cta-btn.mobile-visible {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition-fast);
            line-height: 1;
        }

        .mobile-menu-toggle:hover {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
            box-shadow: 0 0 12px var(--neon-cyan-glow);
        }

        /* ============ 面包屑 ============ */
        .breadcrumb-nav {
            padding: var(--space-md) 0;
            border-bottom: 1px solid var(--border-subtle);
            background: var(--bg-primary);
            position: relative;
            z-index: 1;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .breadcrumb-list a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb-list a:hover {
            color: var(--neon-cyan);
        }

        .breadcrumb-list .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

        .breadcrumb-list .current {
            color: var(--neon-cyan);
            font-weight: 600;
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: var(--space-2xl) 0;
            position: relative;
            z-index: 1;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }

        .section-label {
            display: inline-block;
            padding: 5px 16px;
            background: var(--neon-cyan-subtle);
            color: var(--neon-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ============ Banner板块 ============ */
        .category-banner {
            position: relative;
            padding: var(--space-3xl) 0;
            background: var(--bg-primary);
            overflow: hidden;
            z-index: 1;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(179, 71, 234, 0.08) 0%, transparent 60%),
                linear-gradient(180deg, var(--bg-primary) 0%, transparent 30%, transparent 70%, var(--bg-primary) 100%);
            z-index: 1;
            pointer-events: none;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 750px;
            margin: 0 auto;
        }

        .banner-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            background: var(--bg-surface);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-xl);
            font-size: 2rem;
            margin-bottom: var(--space-md);
            box-shadow: var(--shadow-neon-cyan);
        }

        .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 900;
            letter-spacing: 0.03em;
            background: linear-gradient(135deg, #fff 20%, var(--neon-cyan) 60%, var(--neon-purple) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: var(--space-sm);
            line-height: 1.3;
        }

        .banner-content .banner-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: var(--space-lg);
            line-height: 1.6;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .banner-stats {
            display: flex;
            justify-content: center;
            gap: var(--space-xl);
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
        }

        .banner-stat .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--neon-cyan);
            text-shadow: 0 0 20px var(--neon-cyan-glow);
            font-variant-numeric: tabular-nums;
            font-family: var(--font-mono);
            letter-spacing: 0.04em;
        }

        .banner-stat .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }

        /* ============ 子分类卡片网格 ============ */
        .subcategory-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .subcategory-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            text-align: center;
            transition: all var(--transition-smooth);
            cursor: pointer;
            position: relative;
            overflow: hidden;
            text-decoration: none;
            display: block;
            color: inherit;
        }

        .subcategory-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon-cyan);
            transition: width var(--transition-smooth);
            border-radius: 0 0 var(--radius-full) var(--radius-full);
        }

        .subcategory-card:hover {
            border-color: var(--border-neon);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-glow), 0 8px 32px rgba(0, 0, 0, 0.5);
            transform: translateY(-4px);
        }

        .subcategory-card:hover::before {
            width: 70%;
        }

        .subcategory-card .card-icon {
            font-size: 2.5rem;
            margin-bottom: var(--space-sm);
            display: block;
            transition: transform var(--transition-base);
        }

        .subcategory-card:hover .card-icon {
            transform: scale(1.15);
        }

        .subcategory-card .card-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .subcategory-card .card-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: var(--space-sm);
            line-height: 1.4;
        }

        .subcategory-card .card-count {
            display: inline-block;
            padding: 4px 14px;
            background: var(--neon-purple-subtle);
            color: var(--neon-purple);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            border: 1px solid rgba(179, 71, 234, 0.2);
        }

        /* ============ 文章列表 ============ */
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-lg);
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card-glow), 0 8px 32px rgba(0, 0, 0, 0.5);
            transform: translateY(-3px);
        }

        .article-card .card-image-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-elevated);
        }

        .article-card .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-card:hover .card-image-wrap img {
            transform: scale(1.06);
        }

        .article-card .card-image-wrap .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: rgba(10, 10, 21, 0.85);
            backdrop-filter: blur(6px);
            color: var(--neon-cyan);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            border: 1px solid rgba(0, 212, 255, 0.3);
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .article-card .card-body {
            padding: var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .card-title {
            color: var(--neon-cyan);
        }

        .article-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin-bottom: var(--space-sm);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: var(--space-sm);
            border-top: 1px solid var(--border-subtle);
        }

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

        .article-card .card-meta .meta-views {
            display: flex;
            align-items: center;
            gap: 4px;
            color: var(--neon-purple);
            font-weight: 600;
        }

        /* ============ 热门排行 ============ */
        .ranking-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            padding: var(--space-md) var(--space-lg);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            text-decoration: none;
            color: inherit;
        }

        .ranking-item:hover {
            border-color: var(--border-neon);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-glow);
            transform: translateX(4px);
        }

        .ranking-item .rank-badge {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            border-radius: var(--radius-sm);
            font-family: var(--font-mono);
        }

        .ranking-item:nth-child(1) .rank-badge {
            background: linear-gradient(135deg, #ffd700, #ffb800);
            color: #1a1a00;
            box-shadow: 0 0 16px rgba(255, 184, 0, 0.5);
        }

        .ranking-item:nth-child(2) .rank-badge {
            background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
            color: #1a1a1a;
            box-shadow: 0 0 12px rgba(192, 192, 192, 0.4);
        }

        .ranking-item:nth-child(3) .rank-badge {
            background: linear-gradient(135deg, #cd7f32, #a0522d);
            color: #fff;
            box-shadow: 0 0 10px rgba(205, 127, 50, 0.4);
        }

        .ranking-item .rank-badge {
            background: var(--bg-elevated);
            color: var(--text-muted);
        }

        .ranking-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-item .rank-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition-fast);
        }

        .ranking-item:hover .rank-title {
            color: var(--neon-cyan);
        }

        .ranking-item .rank-views {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .ranking-item .rank-change {
            flex-shrink: 0;
            font-size: 1rem;
            font-weight: 700;
        }

        .rank-change.up {
            color: #2ecc71;
        }

        .rank-change.down {
            color: #e74c3c;
        }

        .rank-change.new {
            color: var(--neon-cyan);
            font-size: 0.78rem;
            background: var(--neon-cyan-subtle);
            padding: 2px 10px;
            border-radius: var(--radius-full);
        }

        .rank-change.same {
            color: var(--text-muted);
        }

        /* ============ 亮点特色区块 ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }

        .feature-item {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            transition: all var(--transition-smooth);
        }

        .feature-item:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card-glow);
            transform: translateY(-3px);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--neon-cyan-subtle);
            border-radius: var(--radius-md);
            font-size: 1.6rem;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }

        .feature-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .feature-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 750px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-neon);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md) var(--space-lg);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            transition: all var(--transition-fast);
            gap: var(--space-sm);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--neon-cyan);
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--neon-purple);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-base);
            background: rgba(0, 212, 255, 0.02);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 var(--space-lg) var(--space-md);
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        /* ============ CTA板块 ============ */
        .cta-section {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-neon);
            border-bottom: 1px solid var(--border-neon);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: var(--space-lg);
            line-height: 1.6;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--neon-cyan), #0098cc);
            color: var(--text-on-neon);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.4), 0 6px 20px rgba(0, 0, 0, 0.4);
            transition: all var(--transition-base);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.6), 0 8px 28px rgba(0, 0, 0, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 34px;
            background: transparent;
            color: var(--neon-cyan);
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            border: 2px solid var(--border-neon-strong);
            transition: all var(--transition-base);
            text-decoration: none;
            cursor: pointer;
            margin-left: var(--space-sm);
        }

        .btn-outline:hover {
            background: var(--neon-cyan-subtle);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
            color: #fff;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
            padding: var(--space-xl) 0;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            margin-bottom: var(--space-sm);
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: var(--space-lg);
            flex-wrap: wrap;
            margin-bottom: var(--space-md);
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.93rem;
            transition: color var(--transition-fast);
            font-weight: 500;
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 10px var(--neon-cyan-glow);
        }

        .footer-copy {
            color: var(--text-muted);
            font-size: 0.85rem;
            letter-spacing: 0.02em;
        }

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

            .article-list-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }

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

            .banner-content h1 {
                font-size: 2.2rem;
            }

            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 56px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 10, 21, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-card);
                padding: var(--space-md);
                gap: 4px;
                max-height: 0;
                overflow: hidden;
                transition: max-height var(--transition-smooth), padding var(--transition-base);
                z-index: 999;
                box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            }

            .main-nav.open {
                max-height: 400px;
                padding: var(--space-md);
            }

            .main-nav a {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                border-radius: var(--radius-md);
                font-size: 1rem;
            }

            .nav-cta-btn {
                display: none;
            }

            .nav-cta-btn.mobile-visible {
                display: inline-flex;
                width: 100%;
                justify-content: center;
                margin-top: 4px;
                border-radius: var(--radius-md);
            }

            .subcategory-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }

            .article-list-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .banner-content h1 {
                font-size: 1.8rem;
            }

            .banner-stats {
                gap: var(--space-md);
            }

            .banner-stat .stat-number {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .ranking-item {
                padding: var(--space-sm) var(--space-md);
                gap: var(--space-sm);
            }

            .ranking-item .rank-badge {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .ranking-item .rank-title {
                font-size: 0.9rem;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

            .btn-outline {
                margin-left: 0;
                margin-top: var(--space-sm);
            }

            .subcategory-card {
                padding: var(--space-md);
            }

            .subcategory-card .card-icon {
                font-size: 2rem;
            }

            .faq-question {
                padding: var(--space-sm) var(--space-md);
                font-size: 0.93rem;
            }

            .faq-answer-inner {
                padding: 0 var(--space-md) var(--space-sm);
            }
        }

        @media (max-width: 520px) {
            .subcategory-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .subcategory-card {
                padding: var(--space-sm);
                border-radius: var(--radius-md);
            }

            .subcategory-card .card-icon {
                font-size: 1.6rem;
            }

            .subcategory-card .card-name {
                font-size: 0.9rem;
            }

            .subcategory-card .card-desc {
                font-size: 0.75rem;
                display: none;
            }

            .subcategory-card .card-count {
                font-size: 0.7rem;
                padding: 2px 10px;
            }

            .banner-content h1 {
                font-size: 1.5rem;
            }

            .banner-content .banner-subtitle {
                font-size: 0.95rem;
            }

            .banner-stats {
                gap: var(--space-sm);
            }

            .banner-stat .stat-number {
                font-size: 1.3rem;
            }

            .banner-stat .stat-label {
                font-size: 0.75rem;
            }

            .section {
                padding: var(--space-xl) 0;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .article-card .card-body {
                padding: var(--space-sm);
            }

            .article-card .card-title {
                font-size: 0.95rem;
            }

            .ranking-list {
                gap: 6px;
            }

            .ranking-item {
                padding: 10px 12px;
                border-radius: var(--radius-sm);
            }

            .ranking-item .rank-badge {
                width: 26px;
                height: 26px;
                font-size: 0.75rem;
            }

            .ranking-item .rank-title {
                font-size: 0.85rem;
            }

            .footer-links {
                gap: var(--space-sm);
            }

            .btn-primary,
            .btn-outline {
                padding: 12px 24px;
                font-size: 0.95rem;
            }

            .faq-question {
                font-size: 0.88rem;
                padding: 10px 14px;
            }
        }

        /* ============ 可访问性 ============ */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        /* ============ 滚动条美化 ============ */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--bg-elevated);
            border-radius: var(--radius-full);
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--neon-cyan-subtle);
        }

/* roulang page: article */
:root {
            --bg-deep: #080812;
            --bg-primary: #0d0d1f;
            --bg-secondary: #12122a;
            --bg-card: #1a1a36;
            --bg-card-hover: #1f1f42;
            --bg-surface: #161630;
            --bg-article: #fafafc;
            --text-primary: #eaeaef;
            --text-secondary: #b0b0c8;
            --text-muted: #7a7a9a;
            --text-dark: #1a1a2e;
            --text-dark-secondary: #555570;
            --text-article: #2a2a3e;
            --text-article-muted: #6a6a80;
            --accent-neon: #00e5ff;
            --accent-neon-glow: rgba(0, 229, 255, 0.45);
            --accent-neon-soft: rgba(0, 229, 255, 0.15);
            --accent-pink: #ff2d95;
            --accent-pink-glow: rgba(255, 45, 149, 0.4);
            --accent-purple: #7b5cff;
            --accent-purple-glow: rgba(123, 92, 255, 0.35);
            --accent-gold: #ffb830;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-card: rgba(255, 255, 255, 0.06);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-neon-sm: 0 0 8px rgba(0, 229, 255, 0.3), 0 0 20px rgba(0, 229, 255, 0.12);
            --shadow-neon-md: 0 0 16px rgba(0, 229, 255, 0.4), 0 0 40px rgba(0, 229, 255, 0.18);
            --shadow-neon-pink: 0 0 14px rgba(255, 45, 149, 0.35), 0 0 35px rgba(255, 45, 149, 0.15);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 10px 35px rgba(0, 0, 0, 0.45), 0 0 25px rgba(0, 229, 255, 0.15);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1240px;
            --max-width-article: 820px;
            --header-height: 66px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-primary);
            background-color: var(--bg-deep);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
        }

        ::selection {
            background: var(--accent-neon-soft);
            color: var(--accent-neon);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--article {
            max-width: var(--max-width-article);
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 1px 0 rgba(0, 229, 255, 0.08), 0 4px 20px rgba(0, 0, 0, 0.4);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg,
                    transparent 0%,
                    var(--accent-neon) 15%,
                    var(--accent-purple) 50%,
                    var(--accent-pink) 85%,
                    transparent 100%);
            opacity: 0.7;
            pointer-events: none;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            transition: transform var(--transition-fast), filter var(--transition-fast);
        }

        .logo-link:hover {
            transform: scale(1.03);
            filter: drop-shadow(0 0 12px var(--accent-neon-glow));
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            color: #fff;
            font-weight: 800;
            font-size: 22px;
            letter-spacing: -1px;
            box-shadow: var(--shadow-neon-sm);
            line-height: 1;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
        }

        .main-nav a.active {
            color: var(--accent-neon);
            background: var(--accent-neon-soft);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25);
            text-shadow: 0 0 8px var(--accent-neon-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            color: #fff !important;
            letter-spacing: 0.4px;
            box-shadow: var(--shadow-neon-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-neon-md);
            transform: translateY(-1px);
            filter: brightness(1.1);
        }

        .nav-cta-btn.mobile-visible {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 26px;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            line-height: 1;
        }

        .mobile-menu-toggle:hover {
            color: var(--accent-neon);
            background: rgba(255, 255, 255, 0.05);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 16px 0;
            background: transparent;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 11px;
            user-select: none;
        }

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

        /* Article Banner */
        .article-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-secondary) center/cover no-repeat;
            background-image: url('/assets/images/backpic/back-1.png');
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(8, 8, 18, 0.75) 0%,
                    rgba(13, 13, 31, 0.85) 40%,
                    rgba(8, 8, 18, 0.92) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg,
                    transparent 5%,
                    var(--accent-neon) 25%,
                    var(--accent-purple) 60%,
                    var(--accent-pink) 85%,
                    transparent 95%);
            z-index: 2;
            opacity: 0.8;
        }

        .article-banner-inner {
            position: relative;
            z-index: 3;
            text-align: center;
            padding: 40px 24px;
            max-width: 900px;
        }

        .article-banner .banner-category {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            background: var(--accent-neon-soft);
            color: var(--accent-neon);
            border: 1px solid rgba(0, 229, 255, 0.25);
            text-shadow: 0 0 6px var(--accent-neon-glow);
        }

        .article-banner .banner-title {
            font-size: clamp(26px, 4vw, 44px);
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
        }

        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .article-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-banner .banner-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent-neon);
            opacity: 0.6;
        }

        /* Article Content Area */
        .article-content-section {
            padding: 0 0 60px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .article-card {
            background: var(--bg-article);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .article-featured-image {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            display: block;
        }

        .article-body {
            padding: 40px 48px;
        }

        .article-body h1 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 10px;
        }

        .article-body .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            padding-bottom: 20px;
            margin-bottom: 28px;
            border-bottom: 1px solid #e8e8ef;
            font-size: 13px;
            color: var(--text-article-muted);
        }

        .article-body .article-meta-row .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-neon-soft);
            color: #0088a0;
            letter-spacing: 0.3px;
        }

        .article-content {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-article);
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 36px 0 14px;
            padding-left: 16px;
            border-left: 3px solid var(--accent-neon);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 28px 0 10px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul,
        .article-content ol {
            margin: 12px 0 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            margin: 24px 0;
            padding: 18px 24px;
            border-left: 4px solid var(--accent-purple);
            background: #f5f5fa;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-dark-secondary);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }

        .article-content code {
            background: #eeeef5;
            padding: 2px 7px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: #c7254e;
        }

        .article-content pre {
            background: #1e1e2e;
            color: #d4d4e8;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            font-family: var(--font-mono);
            font-size: 14px;
            line-height: 1.6;
        }

        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        /* Social Share */
        .share-section {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid #e8e8ef;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .share-section .share-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark-secondary);
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition-base);
            border: 1px solid var(--border-subtle);
            background: #f5f5fa;
            color: var(--text-dark-secondary);
        }

        .share-btn:hover {
            background: var(--accent-neon-soft);
            color: #0088a0;
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 10px var(--accent-neon-glow);
            transform: translateY(-1px);
        }

        /* Not Found State */
        .not-found-card {
            background: var(--bg-article);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 60px 40px;
            text-align: center;
        }

        .not-found-card .nf-icon {
            font-size: 64px;
            margin-bottom: 20px;
            display: block;
            opacity: 0.7;
        }

        .not-found-card h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .not-found-card p {
            color: var(--text-article-muted);
            margin-bottom: 24px;
            font-size: 15px;
        }

        .not-found-card .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 15px;
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            color: #fff;
            box-shadow: var(--shadow-neon-sm);
            transition: all var(--transition-base);
        }

        .not-found-card .btn-back:hover {
            box-shadow: var(--shadow-neon-md);
            transform: translateY(-2px);
        }

        /* Related Articles */
        .related-section {
            padding: 50px 0 70px;
        }

        .related-section .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-neon);
            margin-bottom: 8px;
            text-shadow: 0 0 8px var(--accent-neon-glow);
        }

        .related-section .section-title {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 32px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 229, 255, 0.25);
        }

        .related-card .card-img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .related-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .related-card .card-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(13, 13, 31, 0.7) 100%);
            pointer-events: none;
        }

        .related-card .card-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card .card-cat {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--accent-neon);
            text-transform: uppercase;
        }

        .related-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .card-title {
            color: var(--accent-neon);
        }

        .related-card .card-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }

        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 15px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0;
            margin-top: auto;
            text-align: center;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .site-footer .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 16px;
        }

        .site-footer .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .site-footer .footer-links a:hover {
            color: var(--accent-neon);
            text-shadow: 0 0 6px var(--accent-neon-glow);
        }

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

        /* Back to Top */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 900;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            color: #fff;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
        }

        .back-to-top:hover {
            background: var(--accent-neon-soft);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-neon-sm);
            transform: translateY(-3px);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .article-body {
                padding: 32px 32px;
            }

            .article-body h1 {
                font-size: 26px;
            }

            .article-content {
                font-size: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 58px;
            }

            .container {
                padding: 0 16px;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-primary);
                flex-direction: column;
                gap: 2px;
                padding: 12px 16px;
                border-bottom: 2px solid rgba(0, 229, 255, 0.2);
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 999;
            }

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

            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-md);
                font-size: 15px;
            }

            .nav-cta-btn {
                display: none;
            }

            .nav-cta-btn.mobile-visible {
                display: inline-flex;
                width: 100%;
                justify-content: center;
                margin-top: 4px;
                border-radius: var(--radius-md);
                padding: 13px;
            }

            .article-banner {
                min-height: 240px;
            }

            .article-banner .banner-title {
                font-size: clamp(22px, 5vw, 28px);
            }

            .article-banner-inner {
                padding: 28px 16px;
            }

            .article-content-section {
                margin-top: -28px;
            }

            .article-body {
                padding: 24px 20px;
            }

            .article-body h1 {
                font-size: 23px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 20px;
            }

            .article-content h3 {
                font-size: 17px;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .related-section .section-title {
                font-size: 24px;
            }

            .related-card .card-title {
                font-size: 14px;
            }

            .not-found-card {
                padding: 40px 24px;
            }

            .back-to-top {
                bottom: 20px;
                right: 16px;
                width: 38px;
                height: 38px;
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .article-banner {
                min-height: 200px;
            }

            .article-banner .banner-title {
                font-size: 20px;
            }

            .article-banner .banner-meta {
                font-size: 12px;
                gap: 10px;
            }

            .article-content-section {
                margin-top: -20px;
            }

            .article-body {
                padding: 18px 14px;
            }

            .article-body h1 {
                font-size: 20px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 18px;
                padding-left: 12px;
            }

            .article-content h3 {
                font-size: 16px;
            }

            .article-content blockquote {
                padding: 14px 16px;
                font-size: 14px;
            }

            .article-content pre {
                padding: 14px 16px;
                font-size: 12px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .related-section .section-title {
                font-size: 22px;
            }

            .share-section {
                gap: 8px;
            }

            .share-btn {
                padding: 7px 14px;
                font-size: 12px;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

        @media (max-width: 400px) {
            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 18px;
            }

            .article-body {
                padding: 14px 10px;
            }

            .article-body h1 {
                font-size: 19px;
            }

            .article-content {
                font-size: 14px;
            }
        }