/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a4b8c;
            --primary-light: #2a6bc4;
            --primary-dark: #0f2d5a;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --secondary-dark: #c48a20;
            --accent: #e85d3a;
            --bg-light: #f5f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #c8d0dc;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        p { margin-bottom: 0.5rem; color: var(--text-secondary); }
        .fa, .fas, .far, .fab { font-family: 'Font Awesome 6 Free', 'Font Awesome 6 Brands'; }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 var(--space-sm); }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: var(--space-sm);
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text span { color: var(--secondary); }

        /* Search dominant nav */
        .nav-center {
            flex: 1;
            display: flex;
            justify-content: center;
            max-width: 500px;
            margin: 0 var(--space-sm);
        }
        .search-form {
            display: flex;
            align-items: center;
            width: 100%;
            background: var(--bg-light);
            border-radius: 50px;
            border: 2px solid var(--border-light);
            transition: var(--transition);
            overflow: hidden;
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 75, 140, 0.12);
        }
        .search-form .search-icon {
            padding: 0 0 0 1rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.65rem 0.75rem;
            font-size: 0.95rem;
            color: var(--text-primary);
            outline: none;
            font-family: var(--font-sans);
        }
        .search-form input[type="text"]::placeholder { color: var(--text-light); }
        .search-form button {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 0.65rem 1.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border-radius: 0 50px 50px 0;
            font-family: var(--font-sans);
        }
        .search-form button:hover { background: var(--primary-dark); }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 0.5rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(26, 75, 140, 0.06); }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(26, 75, 140, 0.08);
            font-weight: 600;
        }
        .nav-links a i { margin-right: 0.35rem; font-size: 0.85rem; }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.25rem 0.5rem;
        }

        @media (max-width: 1024px) {
            .nav-center { max-width: 320px; }
            .nav-links a { padding: 0.4rem 0.7rem; font-size: 0.85rem; }
        }

        @media (max-width: 768px) {
            .header-inner { flex-wrap: wrap; padding: 0.5rem 0; }
            .logo-text { font-size: 1.1rem; }
            .nav-center { order: 3; max-width: 100%; margin: 0.5rem 0 0; flex-basis: 100%; }
            .search-form input[type="text"] { padding: 0.55rem 0.6rem; }
            .search-form button { padding: 0.55rem 1rem; font-size: 0.85rem; }
            .nav-links { display: none; }
            .nav-links.open { display: flex; flex-direction: column; width: 100%; order: 4; gap: 0; margin-top: 0.5rem; border-top: 1px solid var(--border-light); padding-top: 0.5rem; }
            .nav-links.open a { width: 100%; padding: 0.7rem 0.5rem; border-radius: 0; }
            .mobile-toggle { display: block; }
        }

        @media (max-width: 520px) {
            .logo-text { font-size: 1rem; }
            .logo-icon { width: 34px; height: 34px; font-size: 1.1rem; }
            .search-form input[type="text"] { font-size: 0.85rem; padding: 0.45rem 0.5rem; }
            .search-form button { padding: 0.45rem 0.8rem; font-size: 0.8rem; }
        }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            min-height: 540px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            isolation: isolate;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(26,75,140,0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            color: var(--text-white);
        }
        .hero-badge {
            display: inline-block;
            background: rgba(232, 168, 56, 0.2);
            border: 1px solid var(--secondary);
            color: var(--secondary-light);
            padding: 0.3rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: var(--space-sm);
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: var(--space-sm);
        }
        .hero h1 span { color: var(--secondary); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: var(--bg-dark);
            padding: 0.8rem 2.4rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
        }
        .hero-actions .btn-primary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.35); }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            padding: 0.8rem 2.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.4);
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
        }
        .hero-actions .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); transform: translateY(-2px); }

        @media (max-width: 768px) {
            .hero { min-height: 400px; padding: var(--space-lg) var(--space-sm); }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.7rem; }
            .hero p { font-size: 0.9rem; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { padding: 0.6rem 1.6rem; font-size: 0.9rem; }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: var(--space-xl) 0;
        }
        .section-block.bg-white { background: var(--bg-white); }
        .section-block.bg-light { background: var(--bg-light); }
        .section-block.bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-block.bg-dark h2,
        .section-block.bg-dark h3,
        .section-block.bg-dark .section-title { color: #fff; }
        .section-block.bg-dark p { color: rgba(255,255,255,0.8); }

        .section-title {
            text-align: center;
            margin-bottom: var(--space-lg);
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .section-title h2 span { color: var(--primary); }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 580px;
            margin: 0 auto;
        }
        .section-title .title-line {
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 0.8rem auto 1rem;
        }

        @media (max-width: 768px) {
            .section-block { padding: var(--space-lg) 0; }
            .section-title h2 { font-size: 1.7rem; }
            .section-title p { font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .section-title h2 { font-size: 1.4rem; }
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-md);
        }
        .card-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-item .card-body {
            padding: var(--space-sm);
        }
        .card-item .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
        }
        .card-item .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .card-item .card-body .card-tag {
            display: inline-block;
            background: rgba(26, 75, 140, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-top: 0.5rem;
        }
        .card-item .card-body .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* ===== Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--space-md);
        }
        .cat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary-light); }
        .cat-card .cat-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-sm);
            color: #fff;
            font-size: 1.6rem;
        }
        .cat-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.4rem; }
        .cat-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }
        .cat-card .cat-count {
            display: inline-block;
            margin-top: 0.6rem;
            font-size: 0.8rem;
            color: var(--text-light);
            background: var(--bg-light);
            padding: 0.15rem 0.8rem;
            border-radius: 50px;
        }

        /* ===== Stats / Numbers ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--space-md);
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 0.25rem;
        }
        .stat-item .stat-icon { font-size: 2rem; color: var(--secondary); margin-bottom: 0.5rem; }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            text-align: center;
            transition: var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .step-item::before {
            counter-increment: step;
            content: "0" counter(step);
            position: absolute;
            top: -12px;
            left: var(--space-md);
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 0.85rem;
            padding: 0.15rem 0.8rem;
            border-radius: 50px;
        }
        .step-item .step-icon {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 0.6rem;
        }
        .step-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.35rem; }
        .step-item p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: var(--space-sm) var(--space-md);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-toggle { font-size: 1.2rem; color: var(--text-light); transition: var(--transition); flex-shrink: 0; }
        .faq-question.open .faq-toggle { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            padding: 0 var(--space-md) var(--space-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: none;
            line-height: 1.7;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
            color: #fff;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .cta-block p {
            color: rgba(255,255,255,0.85);
            font-size: 1.05rem;
            max-width: 550px;
            margin: 0 auto var(--space-md);
        }
        .cta-block .btn-cta {
            background: var(--secondary);
            color: var(--bg-dark);
            padding: 0.9rem 3rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
            display: inline-block;
        }
        .cta-block .btn-cta:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.35); }

        @media (max-width: 768px) {
            .cta-block { padding: var(--space-lg) var(--space-sm); }
            .cta-block h2 { font-size: 1.5rem; }
            .cta-block p { font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--space-lg) 0 var(--space-md);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-md);
            padding-bottom: var(--space-md);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: var(--space-md);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
        }
        .footer-col p { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 0.5rem; line-height: 1.6; }
        .footer-col ul li { margin-bottom: 0.4rem; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-col .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.5rem;
            display: block;
        }
        .footer-col .footer-logo span { color: var(--secondary); }
        .footer-social {
            display: flex;
            gap: var(--space-sm);
            margin-top: var(--space-sm);
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-bottom {
            text-align: center;
            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(--secondary); }

        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-social { justify-content: center; }
        }

        /* ===== Content / Article List ===== */
        .content-list .list-item {
            display: flex;
            gap: var(--space-sm);
            padding: var(--space-sm) 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .content-list .list-item:last-child { border-bottom: none; }
        .content-list .list-item .list-img {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .content-list .list-item .list-info { flex: 1; }
        .content-list .list-item .list-info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .content-list .list-item .list-info h3 a { color: var(--text-primary); }
        .content-list .list-item .list-info h3 a:hover { color: var(--primary); }
        .content-list .list-item .list-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0.25rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-list .list-item .list-meta {
            font-size: 0.78rem;
            color: var(--text-light);
            display: flex;
            gap: var(--space-sm);
            align-items: center;
        }
        .content-list .list-item .list-meta .cat-badge {
            background: rgba(26, 75, 140, 0.08);
            color: var(--primary);
            padding: 0.1rem 0.6rem;
            border-radius: 50px;
            font-weight: 500;
        }

        @media (max-width: 520px) {
            .content-list .list-item { flex-direction: column; }
            .content-list .list-item .list-img { width: 100%; height: 180px; }
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: var(--space-lg) var(--space-sm);
            color: var(--text-light);
        }
        .empty-state i { font-size: 3rem; margin-bottom: var(--space-sm); color: var(--border-medium); }
        .empty-state p { font-size: 1rem; }

        /* ===== Buttons & Tags ===== */
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }
        .btn-link:hover { gap: 0.7rem; color: var(--primary-dark); }

        .tag-pill {
            display: inline-block;
            background: rgba(26, 75, 140, 0.06);
            color: var(--primary);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-pill:hover { background: rgba(26, 75, 140, 0.12); }

        /* ===== Image overlay ===== */
        .img-overlay-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
        }
        .img-overlay-wrap img { transition: var(--transition); }
        .img-overlay-wrap:hover img { transform: scale(1.03); }
        .img-overlay-wrap .overlay-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: var(--space-sm);
            background: linear-gradient(transparent, rgba(0,0,0,0.7));
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
        }

        /* ===== Misc ===== */
        .text-center { text-align: center; }
        .mt-sm { margin-top: var(--space-sm); }
        .mt-md { margin-top: var(--space-md); }
        .mt-lg { margin-top: var(--space-lg); }
        .gap-sm { gap: var(--space-sm); }

        /* ===== Responsive helpers ===== */
        @media (max-width: 768px) {
            .card-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
            .cat-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .cat-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
            .stat-item .stat-number { font-size: 2rem; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #d42a1e;
            --primary-dark: #b01e13;
            --primary-light: #f05a4a;
            --secondary: #1e3a5f;
            --secondary-light: #2a4f7a;
            --accent: #f5c518;
            --bg-light: #f7f8fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #3d3d4a;
            --text-light: #7a7a8a;
            --text-white: #ffffff;
            --border: #e6e8ec;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 36px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 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-body);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media screen and (max-width: 640px) {
            .container-custom { padding: 0 16px; }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 4px;
            letter-spacing: -0.5px;
        }
        .logo span { color: var(--primary); }
        .logo i { color: var(--primary); margin-right: 6px; font-size: 1.4rem; }
        .logo:hover { color: var(--text-dark); }

        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i { font-size: 0.95rem; color: var(--text-light); transition: var(--transition); }
        .nav-links a:hover { background: rgba(212,42,30,0.06); color: var(--primary); }
        .nav-links a:hover i { color: var(--primary); }
        .nav-links a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 16px rgba(212,42,30,0.30);
        }
        .nav-links a.active i { color: var(--text-white); }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            margin-left: 12px;
            transition: var(--transition);
            flex: 0 1 220px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(212,42,30,0.12);
            background: var(--bg-white);
        }
        .nav-search i { color: var(--text-light); font-size: 0.9rem; }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 0.85rem;
            outline: none;
            width: 100%;
            color: var(--text-dark);
        }
        .nav-search input::placeholder { color: var(--text-light); }

        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-dark);
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover { background: var(--bg-light); }

        @media screen and (max-width: 1024px) {
            .nav-search { flex: 0 1 160px; }
        }

        @media screen and (max-width: 820px) {
            .mobile-toggle { display: block; }
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: var(--radius-md);
                justify-content: flex-start;
            }
            .nav-search {
                margin-left: 0;
                flex: 1 1 auto;
                max-width: 200px;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 140px 0 60px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(212,42,30,0.40) 100%);
        }
        .article-hero .container-custom {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.65);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.4); }
        .article-hero .article-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--text-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            color: var(--text-white);
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .article-hero .meta-info {
            display: flex;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-hero .meta-info i { margin-right: 4px; color: var(--accent); }

        @media screen and (max-width: 768px) {
            .article-hero { padding: 120px 0 40px; min-height: 240px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .meta-info { gap: 12px; font-size: 0.8rem; }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 50px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            border: 1px solid var(--border);
        }
        .article-body .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image img { width: 100%; height: auto; display: block; }
        .article-body .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body .content-body p { margin-bottom: 1.2em; }
        .article-body .content-body h2, 
        .article-body .content-body h3 { margin-top: 1.6em; margin-bottom: 0.6em; }
        .article-body .content-body ul, 
        .article-body .content-body ol { margin-bottom: 1.2em; padding-left: 1.6em; }
        .article-body .content-body li { margin-bottom: 0.4em; list-style: disc; }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 1.2em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-body .content-body img { border-radius: var(--radius-sm); margin: 1.2em 0; box-shadow: var(--shadow-sm); }
        .article-body .content-body a { color: var(--primary); text-decoration: underline; }
        .article-body .content-body a:hover { color: var(--primary-dark); }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-body);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }

        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            gap: 16px;
        }
        .article-nav-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 50px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text-body);
            transition: var(--transition);
            max-width: 48%;
        }
        .article-nav-links a:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .article-nav-links a i { font-size: 0.85rem; }
        .article-nav-links .next-link { text-align: right; justify-content: flex-end; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            flex-direction: column;
            gap: 2px;
            color: var(--text-body);
            transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .list-title { font-weight: 600; font-size: 0.95rem; }
        .sidebar-list .list-date { font-size: 0.8rem; color: var(--text-light); }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            border: none;
            color: var(--text-white);
            text-align: center;
        }
        .sidebar-cta h4 { color: var(--text-white); justify-content: center; }
        .sidebar-cta h4 i { color: var(--accent); }
        .sidebar-cta p { font-size: 0.9rem; color: rgba(255,255,255,0.8); margin-bottom: 16px; }
        .sidebar-cta .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--text-dark);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-cta .btn-cta:hover { background: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        @media screen and (max-width: 968px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { order: -1; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .sidebar-cta { grid-column: 1 / -1; }
        }
        @media screen and (max-width: 640px) {
            .article-body { padding: 24px 18px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .article-nav-links { flex-direction: column; }
            .article-nav-links a { max-width: 100%; }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--primary);
            color: var(--text-white);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== Related Section ===== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card .card-img {
            height: 180px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
        .related-card .card-body .card-cat {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body h3 a { color: var(--text-dark); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.85rem; color: var(--text-light); flex: 1; }
        .related-card .card-body .card-date { font-size: 0.8rem; color: var(--text-light); margin-top: 12px; display: flex; align-items: center; gap: 6px; }

        @media screen and (max-width: 968px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media screen and (max-width: 640px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 200px; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 20px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-logo { font-size: 1.5rem; font-weight: 800; color: var(--text-white); display: inline-block; margin-bottom: 12px; }
        .site-footer .footer-logo span { color: var(--primary); }
        .site-footer p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-bottom: 16px; }
        .site-footer .footer-social { display: flex; gap: 12px; }
        .site-footer .footer-social a {
            display: flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.6);
            font-size: 1rem; transition: var(--transition);
        }
        .site-footer .footer-social a:hover { background: var(--primary); color: var(--text-white); }
        .site-footer h4 { color: var(--text-white); font-size: 1.05rem; margin-bottom: 16px; font-weight: 700; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); }
        .site-footer ul a:hover { color: var(--primary); }
        .site-footer ul i { width: 20px; color: var(--primary); margin-right: 6px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        @media screen and (max-width: 968px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media screen and (max-width: 640px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer { padding: 40px 0 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--container-max); padding-left: 20px; padding-right: 20px; }
        .cell { margin-bottom: 0; }
        .button { border-radius: 50px; font-weight: 600; transition: var(--transition); }
        .button:hover { transform: translateY(-1px); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section-alt: #f1f3f5;
            --text-dark: #1a1a2e;
            --text-body: #2b2d42;
            --text-muted: #6c757d;
            --text-light: #f8f9fa;
            --border-color: #e0e0e0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.14);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.18);
            --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-w: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            z-index: 1000;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
        }
        .site-logo span {
            color: var(--primary);
            font-weight: 700;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.4rem;
            margin-right: 6px;
        }
        .site-logo:hover {
            color: var(--text-dark);
        }

        /* 导航链接 */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-links a:hover {
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
        }
        .nav-links a:hover i {
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }
        .nav-links a.active i {
            color: #fff;
        }

        /* 搜索框 */
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            padding: 0 16px;
            height: 40px;
            min-width: 200px;
            transition: var(--transition);
            margin-left: 16px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.88rem;
            color: var(--text-body);
            width: 100%;
            font-family: var(--font-sans);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        /* ===== 移动端导航响应 ===== */
        @media (max-width: 1024px) {
            .nav-search {
                min-width: 140px;
                margin-left: 10px;
            }
            .nav-links a {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 12px 16px 20px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
                transform: translateY(-110%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                align-items: stretch;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                padding: 12px 18px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
            }
            .nav-search {
                margin-left: 0;
                min-width: 0;
                flex: 1;
                max-width: 220px;
            }
        }
        @media (max-width: 520px) {
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.1rem;
                margin-right: 4px;
            }
            .nav-search {
                max-width: 140px;
                height: 36px;
                padding: 0 12px;
            }
            .nav-search input {
                font-size: 0.8rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 60%, #0f3460 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .page-hero .hero-badges span {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .page-hero .hero-badges span i {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 120px 0 60px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
            .page-hero .hero-badges span {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-block-alt {
            background: var(--bg-section-alt);
        }
        .section-block-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-line {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px auto 0;
        }
        .section-block-dark .section-title h2 {
            color: #fff;
        }
        .section-block-dark .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-block-dark .section-title .title-line {
            background: var(--accent);
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== 赛事分类卡片 ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .sport-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            cursor: pointer;
        }
        .sport-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .sport-card .sport-img {
            height: 180px;
            background: var(--bg-section-alt);
            position: relative;
            overflow: hidden;
        }
        .sport-card .sport-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .sport-card:hover .sport-img img {
            transform: scale(1.05);
        }
        .sport-card .sport-img .sport-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(230, 57, 70, 0.30);
        }
        .sport-card .sport-body {
            padding: 20px 22px 24px;
        }
        .sport-card .sport-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .sport-card .sport-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .sport-card .sport-body .sport-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .sport-card .sport-body .sport-meta span i {
            margin-right: 4px;
            color: var(--primary);
        }
        .sport-card .sport-body .btn-outline {
            padding: 6px 18px;
            border-radius: 30px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-size: 0.8rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .sport-card .sport-body .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        @media (max-width: 1024px) {
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .sport-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .sport-card .sport-img {
                height: 150px;
            }
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .news-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-item .news-img {
            height: 200px;
            overflow: hidden;
            background: var(--bg-section-alt);
        }
        .news-item .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-item:hover .news-img img {
            transform: scale(1.04);
        }
        .news-item .news-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-item .news-body .news-tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.10);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .news-item .news-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-item .news-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 12px;
        }
        .news-item .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .news-item .news-body .news-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-item .news-img {
                height: 180px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== 流程 / 时间线 ===== */
        .timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            border-radius: 4px;
            opacity: 0.3;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 40px 30px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 6px;
            width: 16px;
            height: 16px;
            background: var(--primary);
            border-radius: 50%;
            border: 4px solid var(--bg-body);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.25);
        }
        .timeline-item h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .section-block-alt .timeline-item::before {
            border-color: var(--bg-section-alt);
        }

        @media (max-width: 520px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding: 0 0 28px 20px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-q.active i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-a.open {
            display: block;
        }

        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-block h3 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-block .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            background: #f8f9fa;
        }
        .cta-block .btn-white i {
            font-size: 1.1rem;
        }
        .cta-block .cta-muted {
            margin-top: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h3 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
            .cta-block .btn-white {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer .footer-col p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-col ul li i {
            width: 18px;
            color: var(--primary-light);
        }
        .site-footer .footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .site-footer .footer-logo span {
            color: var(--primary);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            color: #fff;
        }

        /* ===== 徽章 / 标签通用 ===== */
        .tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
        }
        .tag-alt {
            background: rgba(69, 123, 157, 0.12);
            color: var(--secondary-light);
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 额外小工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e85d3a;
            --accent-light: #f0795a;
            --accent-dark: #c44a2a;
            --secondary: #f5c842;
            --success: #2ecc71;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-light: #7a8a9a;
            --text-white: #f0f4f8;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }
        p { margin-bottom: 1rem; }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 20px rgba(0,0,0,0.2);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .logo span { color: var(--accent); }
        .logo i { color: var(--secondary); font-size: 1.4rem; margin-right: 6px; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: rgba(255,255,255,0.7);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .nav-links a i { font-size: 0.85rem; opacity: 0.7; }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            background: rgba(255,255,255,0.1);
        }
        .nav-links a.active {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232,93,58,0.3);
        }
        .nav-links a.active i { opacity: 1; }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.1);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
            flex: 1;
            max-width: 280px;
            min-width: 160px;
        }
        .nav-search:focus-within {
            background: rgba(255,255,255,0.18);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232,93,58,0.15);
        }
        .nav-search i { color: rgba(255,255,255,0.5); font-size: 0.9rem; }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 10px 10px;
            color: #fff;
            font-size: 0.9rem;
            width: 100%;
            outline: none;
            font-family: var(--font-sans);
        }
        .nav-search input::placeholder { color: rgba(255,255,255,0.4); }
        .menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.6rem; cursor: pointer; padding: 4px 8px; }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .page-banner .container-custom { position: relative; z-index: 1; }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .page-banner h1 i { color: var(--secondary); margin-right: 12px; }
        .page-banner p {
            color: rgba(255,255,255,0.75);
            font-size: 1.15rem;
            max-width: 640px;
            margin-bottom: 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
            margin-bottom: 16px;
        }
        .breadcrumb a { color: rgba(255,255,255,0.6); }
        .breadcrumb a:hover { color: var(--secondary); }
        .breadcrumb span { color: var(--secondary); }

        /* ===== 板块通用 ===== */
        .section { padding: 60px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .section-title p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 4px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
        .card-body h3 a { color: var(--text-dark); }
        .card-body h3 a:hover { color: var(--accent); }
        .card-body p { color: var(--text-light); font-size: 0.92rem; margin-bottom: 12px; flex: 1; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-light); margin-bottom: 12px; }
        .card-meta i { margin-right: 4px; }
        .card-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .card-footer-link { margin-top: auto; padding-top: 12px; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
            text-align: center;
            justify-content: center;
        }
        .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(232,93,58,0.25); }
        .btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,93,58,0.35); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-light { background: rgba(255,255,255,0.15); color: #fff; border: 1px solid rgba(255,255,255,0.2); }
        .btn-light:hover { background: rgba(255,255,255,0.25); color: #fff; }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }

        /* ===== 标签 ===== */
        .tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
        .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-1px); }
        .tag-active { background: var(--accent); color: #fff; border-color: var(--accent); }

        /* ===== 统计数字 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .stat-card .number { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-card .label { color: var(--text-light); font-size: 0.9rem; margin-top: 4px; }
        .stat-card i { font-size: 2rem; color: var(--primary-light); margin-bottom: 8px; display: block; opacity: 0.7; }

        /* ===== 特色区块 ===== */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 50px;
            padding: 40px 0;
        }
        .feature-block.reverse { flex-direction: row-reverse; }
        .feature-img { flex: 0 0 48%; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
        .feature-content { flex: 1; }
        .feature-content h3 { font-size: 1.6rem; margin-bottom: 14px; }
        .feature-content ul { margin-top: 12px; }
        .feature-content ul li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; color: var(--text-body); }
        .feature-content ul li i { color: var(--success); margin-top: 3px; font-size: 0.9rem; }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .faq-q {
            font-weight: 700;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
        }
        .faq-item .faq-q i { color: var(--accent); transition: var(--transition); }
        .faq-item .faq-a {
            margin-top: 14px;
            color: var(--text-light);
            font-size: 0.95rem;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            display: none;
        }
        .faq-item.active .faq-a { display: block; }
        .faq-item.active .faq-q i { transform: rotate(180deg); }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container-custom { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; font-weight: 800; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 540px; margin: 0 auto 28px; }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .site-footer .footer-logo span { color: var(--accent); }
        .site-footer p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); margin-bottom: 16px; }
        .site-footer .footer-social { display: flex; gap: 12px; }
        .site-footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            color: rgba(255,255,255,0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
        .site-footer h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; }
        .site-footer ul li a:hover { color: var(--accent); }
        .site-footer ul li i { margin-right: 8px; color: var(--accent); }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }

        /* ===== 热门讨论列表 ===== */
        .hot-list { display: flex; flex-direction: column; gap: 12px; }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .hot-item:hover { box-shadow: var(--shadow-sm); border-color: var(--accent); }
        .hot-item .rank {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-light);
            min-width: 32px;
        }
        .hot-item .rank.top { color: var(--accent); }
        .hot-item .content { flex: 1; }
        .hot-item .content h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; }
        .hot-item .content span { font-size: 0.8rem; color: var(--text-light); }
        .hot-item .hot-badge {
            background: var(--accent);
            color: #fff;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 600;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-dark);
                flex-direction: column;
                padding: 16px 20px;
                gap: 6px;
                border-top: 1px solid rgba(255,255,255,0.06);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; padding: 12px 16px; }
            .nav-search { max-width: 100%; flex: 1; min-width: 0; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
            .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 20px; }
            .grid-4 { grid-template-columns: 1fr; }
            .feature-block { flex-direction: column; gap: 24px; padding: 20px 0; }
            .feature-block.reverse { flex-direction: column; }
            .feature-img { flex: 0 0 100%; }
            .section { padding: 40px 0; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .cta-section h2 { font-size: 1.6rem; }
            .section-title h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.5rem; }
            .page-banner { padding: 40px 0 30px; min-height: 200px; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-card .number { font-size: 1.6rem; }
            .card-img { height: 160px; }
            .container-custom { padding: 0 16px; }
        }