/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b0e1a;
            --primary-light: #1a1f35;
            --primary-mid: #141929;
            --accent: #f06418;
            --accent-hover: #d9550e;
            --accent-glow: rgba(240, 100, 24, 0.35);
            --gold: #f5a623;
            --gold-light: #f7c948;
            --text-main: #f0f2f8;
            --text-secondary: #b0b8d1;
            --text-muted: #7a82a0;
            --border-color: rgba(255, 255, 255, 0.07);
            --card-bg: rgba(26, 31, 53, 0.8);
            --card-bg-hover: rgba(32, 38, 62, 0.9);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 40px rgba(240, 100, 24, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --tab-h: 64px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-main);
            background: var(--primary);
            min-height: 100vh;
            padding-top: var(--header-h);
            padding-bottom: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
        }
        h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }
        p {
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav (Desktop) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 14, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            -webkit-text-fill-color: initial;
            color: var(--accent);
            font-size: 1.3rem;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-list a.active {
            color: var(--accent);
            background: rgba(240, 100, 24, 0.1);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .nav-cta {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 12px;
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px var(--accent-glow);
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            height: var(--tab-h);
            background: rgba(11, 14, 26, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-color);
            padding: 0 12px;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 60px;
        }
        .mobile-tab-bar a i {
            font-size: 1.25rem;
            transition: var(--transition);
        }
        .mobile-tab-bar a:hover {
            color: var(--text-secondary);
        }
        .mobile-tab-bar a.active {
            color: var(--accent);
        }
        .mobile-tab-bar a.active i {
            transform: scale(1.1);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: calc(100vh - var(--header-h));
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 26, 0.88) 30%, rgba(11, 14, 26, 0.55) 70%, rgba(11, 14, 26, 0.3));
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(240, 100, 24, 0.12), transparent 70%);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 820px;
            padding: 60px 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 100, 24, 0.15);
            border: 1px solid rgba(240, 100, 24, 0.25);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--gold);
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            font-size: 0.9rem;
        }
        .hero-content h1 {
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 40%, var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            background: transparent;
            color: var(--text-main);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #d9550e);
            color: #fff;
            box-shadow: 0 4px 24px var(--accent-glow);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 36px var(--accent-glow);
        }
        .btn-outline {
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(240, 100, 24, 0.08);
            transform: translateY(-3px);
        }
        .hero-stats-mini {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin-top: 52px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stats-mini .stat-item {
            text-align: center;
        }
        .hero-stats-mini .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
        }
        .hero-stats-mini .stat-num span {
            color: var(--accent);
        }
        .hero-stats-mini .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--primary-mid);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            max-width: 560px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            background: rgba(240, 100, 24, 0.1);
            padding: 4px 16px;
            border-radius: 100px;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(6px);
        }
        .feature-card:hover {
            background: var(--card-bg-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(240, 100, 24, 0.15);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(240, 100, 24, 0.18), rgba(245, 166, 35, 0.10));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, rgba(240, 100, 24, 0.3), rgba(245, 166, 35, 0.2));
            transform: scale(1.05);
        }
        .feature-card h3 {
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* ===== Categories ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(240, 100, 24, 0.2);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img {
            transform: scale(1.05);
        }
        .category-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11, 14, 26, 0.92) 20%, rgba(11, 14, 26, 0.3) 60%, transparent);
            z-index: 1;
        }
        .category-card .info {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }
        .category-card .info h3 {
            font-size: 1.5rem;
            margin-bottom: 6px;
        }
        .category-card .info p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .category-card .info .btn-small {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            padding: 6px 0;
            border-bottom: 2px solid var(--accent);
            transition: var(--transition);
        }
        .category-card .info .btn-small i {
            transition: var(--transition);
        }
        .category-card:hover .info .btn-small i {
            transform: translateX(4px);
        }

        /* ===== News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-card:hover {
            background: var(--card-bg-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(240, 100, 24, 0.12);
        }
        .news-card .news-category {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(240, 100, 24, 0.12);
            padding: 3px 12px;
            border-radius: 100px;
            align-self: flex-start;
        }
        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid var(--border-color);
        }
        .no-news {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 40px 20px;
            transition: var(--transition);
            backdrop-filter: blur(6px);
        }
        .stat-card:hover {
            background: var(--card-bg-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
        }
        .stat-card .stat-number span {
            color: var(--accent);
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Featured ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .featured-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition);
        }
        .featured-image:hover img {
            transform: scale(1.03);
        }
        .featured-text h2 {
            margin-bottom: 16px;
        }
        .featured-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 1.02rem;
            line-height: 1.7;
        }
        .featured-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .featured-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .featured-list li i {
            color: var(--accent);
            font-size: 1rem;
            width: 20px;
            text-align: center;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 100, 24, 0.15);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            background: transparent;
            transition: var(--transition);
            width: 100%;
            text-align: left;
            border: none;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(240, 100, 24, 0.08), rgba(245, 166, 35, 0.04));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 90px 0;
        }
        .cta-section h2 {
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-light);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 280px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */

        /* Tablet */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-image img {
                height: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        /* Mobile */
        @media (max-width: 768px) {
            :root {
                --header-h: 60px;
            }
            body {
                padding-bottom: var(--tab-h);
            }
            .site-header .container {
                padding: 0 16px;
            }
            .nav-list {
                display: none;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .hero {
                min-height: calc(100vh - var(--header-h) - var(--tab-h));
            }
            .hero-content {
                padding: 40px 16px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-stats-mini {
                gap: 20px;
                margin-top: 36px;
                padding-top: 24px;
            }
            .hero-stats-mini .stat-num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-card {
                min-height: 240px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 28px 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .featured-image img {
                height: 200px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 480px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-stats-mini {
                gap: 14px;
            }
            .hero-stats-mini .stat-num {
                font-size: 1.2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .mobile-tab-bar a {
                padding: 4px 10px;
                min-width: 50px;
                font-size: 0.65rem;
            }
            .mobile-tab-bar a i {
                font-size: 1.1rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 12px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #7c3aed;
            --primary-dark: #5b21b6;
            --primary-light: #a78bfa;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #ec4899;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-section: #14142a;
            --bg-light: #f8f7fc;
            --text-light: #f1f0f7;
            --text-muted: #9ca3af;
            --text-dark: #1f1f2e;
            --border-color: rgba(124, 58, 237, 0.2);
            --border-light: rgba(255, 255, 255, 0.08);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
            padding-bottom: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-light);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.1rem, 2vw, 1.5rem);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-muted);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary-light);
            font-size: 1.6rem;
        }
        .logo:hover {
            color: var(--primary-light);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--text-light);
            background: rgba(124, 58, 237, 0.1);
        }
        .nav-list a.active {
            color: var(--text-light);
            background: rgba(124, 58, 237, 0.2);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-light);
            border-radius: 3px;
        }
        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-left: 8px;
        }
        .nav-list a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.35);
        }
        /* 移动端底部 Tab (桌面隐藏) */
        .mobile-tab-bar {
            display: none;
        }
        @media (max-width: 768px) {
            body {
                padding-bottom: var(--tab-height);
            }
            .nav-list a {
                font-size: 0.85rem;
                padding: 6px 12px;
            }
            .nav-list a.nav-cta {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .mobile-tab-bar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: var(--tab-height);
                background: rgba(15, 15, 26, 0.96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-top: 1px solid var(--border-color);
                z-index: 1000;
                align-items: center;
                justify-content: space-around;
                padding: 0 8px;
            }
            .mobile-tab-bar a {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 2px;
                font-size: 0.7rem;
                color: var(--text-muted);
                padding: 6px 12px;
                border-radius: var(--radius-sm);
                transition: var(--transition);
                min-width: 52px;
            }
            .mobile-tab-bar a i {
                font-size: 1.2rem;
            }
            .mobile-tab-bar a.active {
                color: var(--primary-light);
                background: rgba(124, 58, 237, 0.15);
            }
            .mobile-tab-bar a:hover {
                color: var(--text-light);
            }
        }

        /* ===== Banner 内页横幅 ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.92), rgba(20, 20, 42, 0.9)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .page-banner h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-light), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-banner .banner-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .page-banner .banner-stats .stat-item {
            text-align: center;
        }
        .page-banner .banner-stats .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
        }
        .page-banner .banner-stats .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 70px 0 50px;
            }
            .page-banner .banner-stats {
                gap: 24px;
            }
            .page-banner .banner-stats .stat-item .num {
                font-size: 1.6rem;
            }
        }

        /* ===== 分类筛选 ===== */
        .filter-bar {
            background: var(--bg-card);
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: var(--header-height);
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(26, 26, 46, 0.92);
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-bar .filter-label {
            font-weight: 600;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .filter-bar .filter-tag {
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(124, 58, 237, 0.1);
            color: var(--text-muted);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .filter-tag:hover {
            background: rgba(124, 58, 237, 0.2);
            color: var(--text-light);
        }
        .filter-bar .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary-light);
        }
        .filter-bar .filter-tag i {
            margin-right: 6px;
            font-size: 0.8rem;
        }
        @media (max-width: 768px) {
            .filter-bar .container {
                justify-content: center;
            }
            .filter-bar .filter-label {
                width: 100%;
                text-align: center;
                margin-bottom: 4px;
            }
        }

        /* ===== 评测卡片网格 ===== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .reviews-grid {
                grid-template-columns: 1fr;
            }
        }
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .review-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-card);
        }
        .review-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .review-card:hover .card-img img {
            transform: scale(1.05);
        }
        .review-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
            background: rgba(124, 58, 237, 0.85);
        }
        .review-card .card-img .card-score {
            position: absolute;
            bottom: 12px;
            right: 12px;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: #1f1f2e;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
        }
        .review-card .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .review-card .card-body .card-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .review-card .card-body .card-meta span i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .review-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-light);
            line-height: 1.4;
        }
        .review-card .card-body h3 a {
            color: inherit;
        }
        .review-card .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .review-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .review-card .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: auto;
        }
        .review-card .card-body .card-tags span {
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary-light);
            border: 1px solid rgba(124, 58, 237, 0.15);
        }
        .review-card .card-body .card-tags span.genre-tag {
            background: rgba(245, 158, 11, 0.1);
            color: var(--secondary);
            border-color: rgba(245, 158, 11, 0.15);
        }
        .review-card .card-body .card-tags span.platform-tag {
            background: rgba(16, 185, 129, 0.1);
            color: #34d399;
            border-color: rgba(16, 185, 129, 0.15);
        }

        /* ===== 评测特色 ===== */
        .features-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }
        .feature-item {
            background: var(--bg-card);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }
        .feature-item:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-item .icon {
            font-size: 2.4rem;
            color: var(--primary-light);
            margin-bottom: 16px;
        }
        .feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-light);
        }
        .feature-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 热门评测排行 ===== */
        .rank-list {
            display: grid;
            gap: 16px;
            max-width: 800px;
            margin: 0 auto;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            padding: 18px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover {
            border-color: var(--primary);
            background: var(--bg-card-hover);
            transform: translateX(6px);
        }
        .rank-item .rank-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-muted);
            min-width: 40px;
            text-align: center;
        }
        .rank-item:nth-child(1) .rank-num {
            color: var(--secondary);
        }
        .rank-item:nth-child(2) .rank-num {
            color: #c0c0c0;
        }
        .rank-item:nth-child(3) .rank-num {
            color: #cd7f32;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 2px;
        }
        .rank-item .rank-info .rank-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .rank-item .rank-score {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            background: rgba(245, 158, 11, 0.1);
            padding: 4px 14px;
            border-radius: 30px;
        }
        @media (max-width: 640px) {
            .rank-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 14px 16px;
            }
            .rank-item .rank-num {
                min-width: 30px;
                font-size: 1.2rem;
            }
            .rank-item .rank-score {
                font-size: 1rem;
                padding: 2px 12px;
            }
        }

        /* ===== 评测标准 ===== */
        .standard-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .standard-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .standard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .standard-grid {
                grid-template-columns: 1fr;
            }
        }
        .standard-card {
            background: var(--bg-card);
            padding: 28px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .standard-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
        }
        .standard-card .std-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .standard-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .standard-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .standard-card .std-score {
            display: inline-block;
            margin-top: 12px;
            font-weight: 700;
            color: var(--secondary);
            font-size: 1.1rem;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(236, 72, 153, 0.08)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            max-width: 540px;
            margin: 0 auto 32px;
            color: var(--text-muted);
        }
        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            background: transparent;
            color: var(--text-light);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(124, 58, 237, 0.35);
            color: #fff;
        }
        .btn-outline {
            border: 2px solid var(--border-color);
            color: var(--text-light);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(124, 58, 237, 0.1);
            color: var(--text-light);
            transform: translateY(-3px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
        }
        .faq-item .faq-q i {
            color: var(--primary-light);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            margin-top: 12px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== Footer (共享) ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .site-footer .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            max-width: 300px;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text-light);
            font-weight: 600;
        }
        .site-footer .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            padding: 0;
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 640px) {
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            transition: var(--transition);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--text-light);
            background: rgba(124, 58, 237, 0.1);
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-16 {
            gap: 16px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            .nav-list a {
                font-size: 0.78rem;
                padding: 4px 10px;
            }
            .nav-list a.nav-cta {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .review-card .card-body {
                padding: 18px 16px;
            }
            .feature-item {
                padding: 24px 18px;
            }
            .standard-card {
                padding: 20px 18px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e94e1b;
            --primary-dark: #c43d12;
            --primary-light: #f56a3b;
            --secondary: #1b2a4a;
            --secondary-light: #2a3f6a;
            --accent: #f5c518;
            --bg-body: #f8f6f3;
            --bg-white: #ffffff;
            --bg-dark: #0f1724;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-main: #2d2d44;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --text-white: #f9fafb;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 8px 30px rgba(233,78,27,0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            padding-top: var(--header-h);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input,textarea { font-family: inherit; font-size: 1rem; }
        ul,ol { list-style: none; }
        h1,h2,h3,h4,h5,h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(15,23,36,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-h);
            display: flex; align-items: center;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between; width: 100%;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: var(--text-white);
            letter-spacing: -0.3px;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo:hover { color: var(--primary-light); }
        .nav-list {
            display: flex; align-items: center; gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: rgba(255,255,255,0.78);
            transition: var(--transition); position: relative;
        }
        .nav-list a:hover { color: var(--text-white); background: rgba(255,255,255,0.07); }
        .nav-list a.active { color: var(--text-white); background: rgba(233,78,27,0.2); }
        .nav-list a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--primary); border-radius: 4px;
        }
        .nav-cta {
            background: var(--primary) !important; color: #fff !important;
            padding: 8px 22px !important; border-radius: var(--radius-sm) !important;
            font-weight: 600 !important; margin-left: 8px;
        }
        .nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(233,78,27,0.35); }
        .nav-toggle { display: none; color: #fff; font-size: 1.5rem; padding: 6px 10px; cursor: pointer; }

        /* ===== Mobile Bottom Tab ===== */
        .bottom-tab {
            display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
            background: rgba(15,23,36,0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 6px 0 env(safe-area-inset-bottom,6px) 0;
            justify-content: space-around;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
        }
        .bottom-tab a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            padding: 6px 12px; border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.5); font-size: 0.7rem; font-weight: 500;
            transition: var(--transition); min-width: 56px;
        }
        .bottom-tab a i { font-size: 1.25rem; }
        .bottom-tab a:hover { color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.05); }
        .bottom-tab a.active { color: var(--primary); }
        .bottom-tab a.active i { color: var(--primary); }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative; padding: 80px 0 70px;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .article-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,23,36,0.88) 0%, rgba(15,23,36,0.6) 60%, rgba(233,78,27,0.25) 100%);
            z-index: 0;
        }
        .article-banner .container { position: relative; z-index: 1; }
        .article-banner .category-badge {
            display: inline-block; padding: 5px 16px; border-radius: 50px;
            background: var(--primary); color: #fff; font-size: 0.85rem; font-weight: 600;
            margin-bottom: 16px; letter-spacing: 0.3px;
        }
        .article-banner h1 {
            font-size: 2.6rem; color: #fff; max-width: 820px;
            line-height: 1.25; margin-bottom: 18px; text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .article-meta {
            display: flex; flex-wrap: wrap; gap: 20px; align-items: center;
            color: rgba(255,255,255,0.7); font-size: 0.9rem;
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary); width: 16px; text-align: center; }

        /* ===== Article Main ===== */
        .article-main { padding: 50px 0 60px; }
        .article-layout {
            display: grid; grid-template-columns: 1fr 300px; gap: 48px;
            align-items: start;
        }
        .article-body { background: var(--bg-white); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
        .article-body .featured-image { margin-bottom: 32px; border-radius: var(--radius-md); overflow: hidden; }
        .article-body .featured-image img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius-md); }
        .article-body .content { font-size: 1.05rem; line-height: 1.85; color: var(--text-main); }
        .article-body .content p { margin-bottom: 1.2rem; }
        .article-body .content h2 { margin-top: 2rem; margin-bottom: 0.8rem; font-size: 1.6rem; }
        .article-body .content h3 { margin-top: 1.6rem; margin-bottom: 0.6rem; font-size: 1.25rem; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5rem 0; }
        .article-body .content ul, .article-body .content ol { padding-left: 1.5rem; margin-bottom: 1.2rem; }
        .article-body .content li { margin-bottom: 0.4rem; list-style: disc; }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); background: rgba(233,78,27,0.06);
            padding: 16px 24px; margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted); font-style: italic;
        }
        .article-body .content pre {
            background: var(--bg-dark); color: #e5e7eb; padding: 20px; border-radius: var(--radius-md);
            overflow-x: auto; margin: 1.5rem 0; font-size: 0.9rem;
        }
        .article-body .content code { font-family: 'JetBrains Mono','Fira Code',monospace; }
        .article-not-found {
            text-align: center; padding: 60px 20px; background: var(--bg-white);
            border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
        }
        .article-not-found i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; }
        .article-not-found h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-back { display: inline-flex; align-items: center; gap: 8px; }

        /* ===== Tags & Share ===== */
        .article-tags-share {
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--border);
        }
        .tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .tags .tag {
            padding: 4px 14px; border-radius: 50px; background: var(--bg-body);
            color: var(--text-muted); font-size: 0.85rem; font-weight: 500;
            border: 1px solid var(--border); transition: var(--transition);
        }
        .tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .share { display: flex; gap: 10px; align-items: center; }
        .share span { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .share a {
            display: flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: var(--bg-body); color: var(--text-muted);
            border: 1px solid var(--border); transition: var(--transition);
        }
        .share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .sidebar-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            padding: 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
        }
        .sidebar-card h4 { font-size: 1.1rem; margin-bottom: 16px; color: var(--text-dark); display: flex; align-items: center; gap: 8px; }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-list a {
            display: flex; gap: 12px; align-items: flex-start; padding: 8px 0;
            border-bottom: 1px solid var(--border-light); color: var(--text-main);
            transition: var(--transition);
        }
        .sidebar-list a:last-child { border-bottom: none; }
        .sidebar-list a:hover { color: var(--primary); transform: translateX(4px); }
        .sidebar-list a img { width: 60px; height: 60px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .sidebar-list a .sidebar-post-title { font-size: 0.9rem; font-weight: 600; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .sidebar-list a .sidebar-post-meta { font-size: 0.78rem; color: var(--text-light); margin-top: 4px; display: block; }
        .sidebar-cta { text-align: center; }
        .sidebar-cta p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 14px; }

        /* ===== Related Section ===== */
        .related-section { background: var(--bg-white); padding: 60px 0; border-top: 1px solid var(--border); }
        .related-section h2 { text-align: center; margin-bottom: 40px; font-size: 1.8rem; }
        .related-section h2 i { color: var(--primary); margin-right: 10px; }
        .related-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
        .related-card {
            background: var(--bg-body); border-radius: var(--radius-md); overflow: hidden;
            border: 1px solid var(--border-light); transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
        .related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .related-card .related-info { padding: 16px 18px 20px; }
        .related-card .related-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .related-info h3 a { color: var(--text-dark); }
        .related-card .related-info h3 a:hover { color: var(--primary); }
        .related-card .related-info .related-meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 12px; }

        /* ===== CTA Section ===== */
        .article-cta {
            background: var(--bg-dark) url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 70px 0; text-align: center; position: relative; isolation: isolate;
        }
        .article-cta::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,23,36,0.85) 0%, rgba(233,78,27,0.3) 100%);
            z-index: 0;
        }
        .article-cta .container { position: relative; z-index: 1; }
        .article-cta h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
        .article-cta p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 12px 30px;
            border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem;
            transition: var(--transition); border: none;
        }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 24px rgba(233,78,27,0.35); }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); }
        .btn-outline:hover { background: #fff; color: var(--primary-dark); border-color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { margin-bottom: 14px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 300px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-social { display: flex; gap: 12px; margin-top: 8px; }
        .footer-social a {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.6);
            font-size: 1.15rem; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px;
            display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
            font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary-light); }
        .footer-bottom span { display: flex; gap: 12px; align-items: center; }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
            padding: 16px 0 8px; font-size: 0.85rem; color: var(--text-light);
        }
        .breadcrumb a { color: rgba(255,255,255,0.6); }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb span { color: rgba(255,255,255,0.4); }
        .breadcrumb .sep { color: rgba(255,255,255,0.3); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .related-grid { grid-template-columns: repeat(2,1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            body { padding-top: 64px; }
            :root { --header-h: 64px; }
            .site-header .container { padding: 0 16px; }
            .nav-list { display: none; }
            .nav-toggle { display: block; }
            .bottom-tab { display: flex; }
            body { padding-bottom: 64px; }
            .article-banner { padding: 50px 0 40px; }
            .article-banner h1 { font-size: 1.7rem; }
            .article-body { padding: 24px 18px; }
            .article-layout { gap: 24px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .article-tags-share { flex-direction: column; gap: 16px; align-items: flex-start; }
            .article-cta h2 { font-size: 1.5rem; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .article-banner h1 { font-size: 1.6rem; }
            .site-footer { padding: 40px 0 20px; }
            .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .article-banner h1 { font-size: 1.4rem; }
            .article-body { padding: 16px 14px; }
            .article-meta { gap: 10px; font-size: 0.8rem; flex-wrap: wrap; }
            .related-card .related-info { padding: 12px 14px 16px; }
            .btn { padding: 10px 22px; font-size: 0.9rem; }
            .sidebar-card { padding: 18px; }
        }

        /* ===== Mobile Nav Drawer ===== */
        .mobile-drawer {
            position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; z-index: 999;
            background: rgba(15,23,36,0.98); backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            gap: 20px; opacity: 0; pointer-events: none; transition: var(--transition);
            padding: 40px 20px;
        }
        .mobile-drawer.open { opacity: 1; pointer-events: auto; }
        .mobile-drawer a {
            color: rgba(255,255,255,0.8); font-size: 1.3rem; font-weight: 600;
            padding: 12px 30px; border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-drawer a:hover { background: rgba(255,255,255,0.08); color: #fff; }
        .mobile-drawer a.active { color: var(--primary); }
        .mobile-drawer .nav-cta { font-size: 1.1rem; padding: 14px 40px !important; }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3bf1;
            --primary-dark: #5228c9;
            --primary-light: #8b5ff7;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-main: #0b0d1a;
            --bg-alt: #11142b;
            --bg-card: #1a1d3a;
            --bg-card-hover: #222754;
            --text-main: #f1f3f9;
            --text-strong: #ffffff;
            --text-muted: #9ca3c6;
            --text-dim: #6b6f95;
            --border: #2a2f54;
            --border-light: #3a3f64;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(108, 59, 241, 0.12);
            --shadow-md: 0 8px 30px rgba(108, 59, 241, 0.18);
            --shadow-lg: 0 16px 48px rgba(108, 59, 241, 0.25);
            --shadow-glow: 0 0 40px rgba(108, 59, 241, 0.15);
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 80px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-bottom: 70px;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            body {
                padding-bottom: 64px;
            }
        }

        /* ===== Header / Navigation (Desktop) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }
        .logo i {
            color: var(--secondary);
            font-size: 26px;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--secondary);
        }
        .logo:hover i {
            transform: scale(1.1) rotate(-10deg);
        }

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

        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            color: var(--text-strong);
            background: rgba(108, 59, 241, 0.1);
        }

        .nav-list a.active {
            color: var(--text-strong);
            background: rgba(108, 59, 241, 0.2);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--secondary);
        }

        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(108, 59, 241, 0.3);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a.nav-cta:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 59, 241, 0.4);
        }

        /* ===== Mobile Bottom Tab Navigation ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(11, 13, 26, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            justify-content: space-around;
            align-items: center;
            box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.4);
        }

        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 11px;
            color: var(--text-dim);
            transition: var(--transition);
            border-radius: var(--radius-sm);
            min-width: 60px;
            text-align: center;
        }

        .mobile-bottom-nav a i {
            font-size: 20px;
            transition: var(--transition);
        }

        .mobile-bottom-nav a:hover,
        .mobile-bottom-nav a.active {
            color: var(--secondary);
        }
        .mobile-bottom-nav a.active i {
            transform: scale(1.1);
        }
        .mobile-bottom-nav a.active {
            background: rgba(245, 158, 11, 0.08);
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
            }
            .mobile-bottom-nav {
                display: flex;
            }
            .site-header .container {
                height: 60px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
        }

        @media (min-width: 769px) {
            .mobile-bottom-nav {
                display: none !important;
            }
        }

        /* ===== Page Banner (Hero) ===== */
        .page-banner {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, var(--bg-main) 0%, var(--bg-alt) 50%, rgba(108, 59, 241, 0.08) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.12;
            z-index: 0;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 16px;
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .page-banner h1 span {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .page-banner .banner-tags span {
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(108, 59, 241, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(108, 59, 241, 0.2);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 100px 0 40px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner p {
                font-size: 14px;
            }
            .page-banner .banner-tags span {
                font-size: 12px;
                padding: 4px 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

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

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 i {
            color: var(--secondary);
            margin-right: 8px;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 12px auto 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .section-header h2 {
                font-size: 22px;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

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

        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 900px) {
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid.cols-2 {
                grid-template-columns: 1fr;
            }
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Category Card ===== */
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .cat-card .cat-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(108, 59, 241, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--secondary);
            transition: var(--transition);
        }

        .cat-card:hover .cat-icon {
            background: rgba(108, 59, 241, 0.25);
            transform: scale(1.05);
        }

        .cat-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
        }

        .cat-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .cat-card .cat-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .cat-card .cat-meta i {
            color: var(--primary-light);
        }

        .cat-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            margin-top: 4px;
            transition: var(--transition);
        }

        .cat-card .cat-link:hover {
            gap: 12px;
            color: var(--secondary-light);
        }

        /* ===== Article Card (horizontal) ===== */
        .article-card {
            display: flex;
            gap: var(--spacing-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            align-items: flex-start;
        }

        .article-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }

        .article-card .art-img {
            width: 200px;
            min-height: 130px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }

        .article-card .art-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 4px 0;
        }

        .article-card .art-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.4;
        }

        .article-card .art-body h3 a {
            color: var(--text-strong);
        }
        .article-card .art-body h3 a:hover {
            color: var(--secondary);
        }

        .article-card .art-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .art-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .article-card .art-meta i {
            color: var(--primary-light);
            margin-right: 4px;
        }

        .article-card .art-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(16, 185, 129, 0.12);
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .article-card {
                flex-direction: column;
            }
            .article-card .art-img {
                width: 100%;
                height: 180px;
            }
        }

        @media (max-width: 520px) {
            .article-card .art-img {
                height: 140px;
            }
            .article-card .art-body h3 {
                font-size: 16px;
            }
        }

        /* ===== Feature / Data Blocks ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

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

        .feature-item:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .feature-item .num {
            font-size: 40px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .feature-item .label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        .feature-item i {
            font-size: 28px;
            color: var(--primary-light);
            margin-bottom: 8px;
            display: block;
        }

        @media (max-width: 900px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-item .num {
                font-size: 30px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-question i {
            color: var(--primary-light);
            font-size: 18px;
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-alt), rgba(108, 59, 241, 0.06));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            text-align: center;
            padding: var(--spacing-xl) 0;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-size: 17px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 8px 32px rgba(108, 59, 241, 0.3);
            transition: var(--transition);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108, 59, 241, 0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: #fff;
        }

        .cta-section .cta-btn i {
            font-size: 20px;
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-md);
        }

        .site-footer .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 14px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }

        .site-footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }

        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(108, 59, 241, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-muted);
            padding: 0;
            transition: var(--transition);
        }

        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            padding: 0;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .site-footer .footer-bottom a {
            color: var(--text-dim);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }

        /* ===== Guide-specific extra ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            counter-reset: step;
        }

        .guide-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            padding-top: 52px;
        }

        .guide-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            left: 20px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .guide-step:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .guide-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .guide-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .guide-step .step-icon {
            font-size: 24px;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        @media (max-width: 768px) {
            .guide-steps {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .guide-step {
                padding: var(--spacing-sm);
                padding-top: 48px;
            }
            .guide-step h4 {
                font-size: 15px;
            }
        }