/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a73e8;
            --primary-dark: #1557b0;
            --primary-light: #e8f0fe;
            --secondary: #34a853;
            --secondary-dark: #2d8f47;
            --accent: #fbbc04;
            --accent-dark: #e5a800;
            --bg: #ffffff;
            --bg-alt: #f8f9fa;
            --bg-dark: #1f2937;
            --text: #1f2937;
            --text-secondary: #6b7280;
            --text-light: #9ca3af;
            --text-on-dark: #f9fafb;
            --border: #e5e7eb;
            --border-light: #f3f4f6;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-glass: 0 8px 32px rgba(0,0,0,0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255,255,255,0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.3);
            box-shadow: var(--shadow-glass);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.95);
            box-shadow: 0 4px 32px rgba(0,0,0,0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo i { font-size: 1.6rem; color: var(--primary); }
        .logo span { color: var(--text); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: var(--primary-light); }
        .nav-list a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
        .nav-cta {
            padding: 8px 24px;
            background: var(--primary);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 12px rgba(26,115,232,0.3);
            transition: all var(--transition);
        }
        .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(26,115,232,0.35); color: #fff !important; }
        .mobile-toggle { display: none; font-size: 1.6rem; color: var(--text); padding: 4px; }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #f0f7ff 0%, #e8f5e9 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%; right: -10%;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(26,115,232,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%; left: -5%;
            width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(52,168,83,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(26,115,232,0.10);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .hero-badge i { font-size: 0.8rem; }
        .hero h1 { font-size: 3rem; line-height: 1.2; margin-bottom: 20px; color: var(--text); }
        .hero h1 em { color: var(--primary); font-style: normal; }
        .hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26,115,232,0.30);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,115,232,0.35); color: #fff; }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-2px); }
        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-image-placeholder {
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            background: linear-gradient(145deg, #dbeafe, #bbf7d0);
            border-radius: var(--radius-lg);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            color: var(--primary);
            font-size: 4rem;
            box-shadow: 0 20px 60px rgba(0,0,0,0.08);
            border: 1px solid rgba(255,255,255,0.5);
        }
        .hero-image-placeholder span { font-size: 1rem; color: var(--text-secondary); font-weight: 500; }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--bg-dark); color: var(--text-on-dark); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-sub {
            text-align: center;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        .section-dark .section-sub { color: rgba(255,255,255,0.7); }

        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            padding: 36px 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .feature-icon {
            width: 60px; height: 60px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto 18px;
        }
        .feature-card h3 { margin-bottom: 10px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            padding: 32px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .category-card .cat-icon {
            width: 48px; height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
        }
        .category-card h3 { font-size: 1.2rem; }
        .category-card p { color: var(--text-secondary); font-size: 0.95rem; flex: 1; }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
        }
        .category-card .cat-link i { font-size: 0.8rem; transition: transform var(--transition); }
        .category-card .cat-link:hover i { transform: translateX(4px); }

        /* ===== 资讯列表（CMS） ===== */
        .cms-list { display: flex; flex-direction: column; gap: 16px; }
        .cms-item {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .cms-item:hover { box-shadow: var(--shadow-lg); transform: translateX(4px); }
        .cms-item-left { flex: 1; min-width: 200px; }
        .cms-item-left h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .cms-item-left h4 a { color: var(--text); }
        .cms-item-left h4 a:hover { color: var(--primary); }
        .cms-item-left p { color: var(--text-secondary); font-size: 0.9rem; }
        .cms-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
        .tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
        }
        .tag-green { background: #e6f7ec; color: var(--secondary); }
        .tag-amber { background: #fef3cd; color: #856404; }
        .cms-item-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .cms-date { color: var(--text-light); font-size: 0.85rem; }
        .cms-read-more {
            padding: 6px 18px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .cms-read-more:hover { background: var(--primary); color: #fff; }
        .cms-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            font-size: 1rem;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.10);
            transition: all var(--transition);
        }
        .stat-item:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-number em { color: var(--accent); font-style: normal; }
        .stat-label { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-top: 6px; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-lg); }
        .faq-question {
            width: 100%;
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            background: none;
            text-align: left;
            transition: all var(--transition);
        }
        .faq-question i { color: var(--primary); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #0d47a1 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 44px;
            border-radius: 50px;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(0,0,0,0.15);
            transition: all var(--transition);
        }
        .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.20); color: var(--primary-dark) !important; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo span { color: rgba(255,255,255,0.9); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            .hero-grid { gap: 40px; }
            .hero h1 { font-size: 2.4rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .mobile-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: var(--nav-height); left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                box-shadow: 0 8px 32px rgba(0,0,0,0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
                border-bottom: 1px solid var(--border);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; }
            .nav-list a { width: 100%; padding: 12px 16px; }
            .nav-cta { text-align: center; }
            .hero { padding: 120px 0 56px; }
            .hero-grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
            .hero p { margin: 0 auto 32px; }
            .hero-actions { justify-content: center; }
            .hero-image-placeholder { max-width: 360px; margin: 0 auto; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 1.8rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
            .cms-item { flex-direction: column; align-items: flex-start; }
            .cms-item-right { width: 100%; justify-content: flex-start; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.7rem; }
            .hero p { font-size: 0.95rem; }
            .btn { padding: 12px 28px; font-size: 0.9rem; }
            .feature-card { padding: 24px 16px; }
            .category-card { padding: 24px; }
            .cms-item { padding: 18px 20px; }
            .faq-question { padding: 16px 20px; font-size: 0.95rem; }
            .faq-answer { padding: 0 20px 16px; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item { padding: 20px 12px; }
            .stat-number { font-size: 1.5rem; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --primary: #1a73e8;
        --primary-dark: #1557b0;
        --primary-light: #e8f0fe;
        --accent: #f5a623;
        --accent-dark: #d4891a;
        --bg: #ffffff;
        --bg-alt: #f8f9fb;
        --bg-dark: #0f1923;
        --text: #1a1a2e;
        --text-light: #5a6a7a;
        --text-white: #f0f4f8;
        --border: #e2e8f0;
        --border-light: #f0f2f5;
        --radius: 16px;
        --radius-sm: 8px;
        --radius-lg: 24px;
        --shadow: 0 4px 24px rgba(0,0,0,0.06);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
        --shadow-glass: 0 8px 32px rgba(0,0,0,0.08);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --max-width: 1200px;
        --nav-height: 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);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--primary-dark); }
    button, input, textarea { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Glass Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--nav-height);
        z-index: 1000;
        background: rgba(255,255,255,0.72);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(226,232,240,0.5);
        transition: background var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled {
        background: rgba(255,255,255,0.92);
        box-shadow: 0 2px 20px rgba(0,0,0,0.06);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 24px;
        font-weight: 800;
        color: var(--text);
        letter-spacing: -0.5px;
        white-space: nowrap;
    }
    .logo i { color: var(--primary); font-size: 28px; }
    .logo span { color: var(--primary); }
    .nav-list {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .nav-list a {
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 500;
        color: var(--text-light);
        transition: all var(--transition);
        position: relative;
    }
    .nav-list a:hover {
        color: var(--primary);
        background: var(--primary-light);
    }
    .nav-list a.active {
        color: var(--primary);
        background: var(--primary-light);
        font-weight: 600;
    }
    .nav-list a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--primary);
        border-radius: 2px;
    }
    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px !important;
        border-radius: var(--radius-sm) !important;
        background: var(--primary) !important;
        color: #fff !important;
        font-weight: 600 !important;
        transition: all var(--transition) !important;
        margin-left: 12px;
    }
    .nav-cta:hover {
        background: var(--primary-dark) !important;
        color: #fff !important;
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(26,115,232,0.35);
    }
    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 26px;
        color: var(--text);
        cursor: pointer;
        padding: 4px 8px;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .nav-toggle:hover { background: var(--bg-alt); }

    /* ===== Hero (Article Hero) ===== */
    .article-hero {
        margin-top: var(--nav-height);
        padding: 60px 0 40px;
        background: linear-gradient(135deg, var(--bg-alt) 0%, #eef2f7 100%);
        border-bottom: 1px solid var(--border-light);
    }
    .article-hero .container { max-width: 860px; }
    .article-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-light);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .article-breadcrumb a { color: var(--text-light); }
    .article-breadcrumb a:hover { color: var(--primary); }
    .article-breadcrumb .sep { color: #ccc; }
    .article-breadcrumb .current { color: var(--text); font-weight: 500; }
    .article-category {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 20px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 16px;
    }
    .article-hero h1 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 16px;
        color: var(--text);
        letter-spacing: -0.5px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 24px;
        font-size: 14px;
        color: var(--text-light);
        align-items: center;
    }
    .article-meta i { margin-right: 6px; color: var(--primary); font-size: 14px; }
    .article-meta .author { font-weight: 500; color: var(--text); }
    .article-meta .views i { color: var(--accent); }

    /* ===== Article Content ===== */
    .article-main {
        padding: 40px 0 60px;
        background: var(--bg);
    }
    .article-main .container { max-width: 860px; }
    .article-body {
        font-size: 17px;
        line-height: 1.9;
        color: var(--text);
    }
    .article-body p { margin-bottom: 20px; }
    .article-body h2, .article-body h3, .article-body h4 {
        margin-top: 32px;
        margin-bottom: 16px;
        font-weight: 700;
        color: var(--text);
    }
    .article-body h2 { font-size: 26px; }
    .article-body h3 { font-size: 22px; }
    .article-body h4 { font-size: 18px; }
    .article-body ul, .article-body ol {
        margin-bottom: 20px;
        padding-left: 24px;
    }
    .article-body ul li { list-style: disc; margin-bottom: 6px; }
    .article-body ol li { list-style: decimal; margin-bottom: 6px; }
    .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
    .article-body a:hover { color: var(--primary-dark); }
    .article-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-light);
        padding: 16px 24px;
        margin: 24px 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-light);
        font-style: italic;
    }
    .article-body img {
        border-radius: var(--radius-sm);
        margin: 24px auto;
        box-shadow: var(--shadow);
        max-width: 100%;
    }
    .article-body code {
        background: var(--bg-alt);
        padding: 2px 8px;
        border-radius: 4px;
        font-size: 0.9em;
        font-family: 'JetBrains Mono', monospace;
    }
    .article-body pre {
        background: var(--bg-dark);
        color: var(--text-white);
        padding: 20px;
        border-radius: var(--radius-sm);
        overflow-x: auto;
        margin: 24px 0;
        font-size: 14px;
        line-height: 1.6;
    }
    .article-body pre code { background: none; color: inherit; padding: 0; }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }
    .article-tags .tag {
        display: inline-block;
        padding: 6px 16px;
        border-radius: 20px;
        background: var(--bg-alt);
        color: var(--text-light);
        font-size: 13px;
        font-weight: 500;
        transition: all var(--transition);
    }
    .article-tags .tag:hover {
        background: var(--primary-light);
        color: var(--primary);
    }
    .article-nav {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }
    .article-nav a {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 20px;
        border-radius: var(--radius-sm);
        background: var(--bg-alt);
        color: var(--text);
        font-weight: 500;
        font-size: 14px;
        transition: all var(--transition);
        border: 1px solid var(--border);
    }
    .article-nav a:hover {
        background: var(--primary-light);
        color: var(--primary);
        border-color: var(--primary);
    }
    .article-nav .next { margin-left: auto; }

    /* ===== Related Posts ===== */
    .related-section {
        padding: 60px 0;
        background: var(--bg-alt);
    }
    .related-section .section-title {
        font-size: 28px;
        font-weight: 800;
        margin-bottom: 8px;
        text-align: center;
    }
    .related-section .section-sub {
        text-align: center;
        color: var(--text-light);
        margin-bottom: 40px;
        font-size: 16px;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg);
        border-radius: var(--radius);
        padding: 24px;
        border: 1px solid var(--border);
        transition: all var(--transition);
        box-shadow: var(--shadow);
    }
    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: var(--primary-light);
    }
    .related-card .cat-tag {
        display: inline-block;
        padding: 2px 12px;
        border-radius: 12px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 12px;
        font-weight: 600;
        margin-bottom: 12px;
    }
    .related-card h3 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .related-card h3 a { color: var(--text); }
    .related-card h3 a:hover { color: var(--primary); }
    .related-card p {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.6;
        margin-bottom: 12px;
    }
    .related-card .meta {
        font-size: 13px;
        color: var(--text-light);
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-card .meta i { color: var(--primary); font-size: 12px; margin-right: 4px; }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 60px 0;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        color: #fff;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 32px;
        font-weight: 800;
        margin-bottom: 12px;
        color: #fff;
    }
    .cta-section p {
        font-size: 18px;
        opacity: 0.9;
        margin-bottom: 28px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }
    .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 40px;
        border-radius: var(--radius-sm);
        background: #fff;
        color: var(--primary) !important;
        font-size: 18px;
        font-weight: 700;
        transition: all var(--transition);
        box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    }
    .cta-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 30px rgba(0,0,0,0.25);
        background: #f8f9fb;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: var(--text-white);
        padding: 60px 0 30px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .logo {
        font-size: 22px;
        color: #fff;
        margin-bottom: 16px;
    }
    .footer-brand .logo i { color: var(--accent); }
    .footer-brand .logo span { color: var(--accent); }
    .footer-brand p { font-size: 14px; line-height: 1.8; opacity: 0.7; max-width: 360px; }
    .footer-col h4 {
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
    }
    .footer-col a {
        display: block;
        padding: 4px 0;
        font-size: 14px;
        color: rgba(255,255,255,0.6);
        transition: all var(--transition);
    }
    .footer-col a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 13px;
        opacity: 0.6;
    }

    /* ===== Not Found State ===== */
    .not-found-box {
        text-align: center;
        padding: 80px 20px;
    }
    .not-found-box i { font-size: 64px; color: var(--border); margin-bottom: 20px; }
    .not-found-box h2 { font-size: 28px; margin-bottom: 12px; }
    .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
    .not-found-box .back-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius-sm);
        background: var(--primary);
        color: #fff;
        font-weight: 600;
        transition: all var(--transition);
    }
    .not-found-box .back-link:hover { background: var(--primary-dark); transform: translateY(-2px); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .related-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
        .nav-list {
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            flex-direction: column;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-glass);
            transform: translateY(-120%);
            opacity: 0;
            transition: all var(--transition);
            pointer-events: none;
        }
        .nav-list.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav-list a { width: 100%; padding: 12px 16px; }
        .nav-list a.active::after { display: none; }
        .nav-cta { margin-left: 0; justify-content: center; }
        .nav-toggle { display: block; }
        .article-hero h1 { font-size: 26px; }
        .article-body { font-size: 16px; }
        .related-grid { grid-template-columns: 1fr; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
    }
    @media (max-width: 520px) {
        .article-hero { padding: 40px 0 24px; }
        .article-hero h1 { font-size: 22px; }
        .article-meta { gap: 8px 16px; font-size: 13px; }
        .cta-section h2 { font-size: 24px; }
        .cta-btn { width: 100%; justify-content: center; }
    }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-light: #34d399;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --text: #1e293b;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.10), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: all 0.15s ease;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

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

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

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

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

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

        a:hover {
            color: var(--primary-dark);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Navigation (Glass Immersive) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.5);
            transition: var(--transition);
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border-bottom-color: var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo i {
            color: var(--primary);
            font-size: 28px;
            transition: var(--transition);
        }

        .logo:hover i {
            transform: rotate(-8deg) scale(1.05);
        }

        .logo span {
            color: var(--primary);
            font-weight: 700;
        }

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

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

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-list a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
        }

        .nav-list a:hover::after {
            width: 60%;
        }

        .nav-list a.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }

        .nav-list a.active::after {
            width: 60%;
        }

        .nav-list .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
            transition: var(--transition);
            margin-left: 8px;
        }

        .nav-list .nav-cta::after {
            display: none;
        }

        .nav-list .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
            color: #fff !important;
        }

        .nav-list .nav-cta i {
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--dark);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            background: rgba(0, 0, 0, 0.04);
        }

        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.08);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: calc(var(--nav-height) + 60px) 0 60px;
            background: linear-gradient(135deg, var(--primary-bg) 0%, #eef2ff 50%, #f0fdf4 100%);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .page-hero-content {
            max-width: 800px;
        }

        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .page-hero .breadcrumb a {
            color: var(--text-light);
            font-weight: 400;
        }

        .page-hero .breadcrumb a:hover {
            color: var(--primary);
        }

        .page-hero .breadcrumb .sep {
            color: var(--text-lighter);
            font-size: 12px;
        }

        .page-hero .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .page-hero h1 i {
            color: var(--primary);
        }

        .page-hero p {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.8;
            max-width: 640px;
        }

        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(226, 232, 240, 0.6);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
        }

        .page-hero .hero-badge i {
            color: var(--primary);
            font-size: 14px;
        }

        /* ===== Main Content ===== */
        .main-content {
            padding: 60px 0;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        .section-subtitle.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-title.center {
            text-align: center;
        }

        /* ===== Guide Steps ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .guide-step {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .guide-step .step-number {
            font-size: 48px;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.10);
            line-height: 1;
            margin-bottom: 12px;
            font-family: 'Inter', monospace;
        }

        .guide-step .step-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--primary-bg);
            border-radius: 16px;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .guide-step:hover .step-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .guide-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .guide-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Platform Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .feature-card .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: var(--primary-bg);
            border-radius: 14px;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Platform Specs / Data Section ===== */
        .specs-section {
            background: var(--bg-alt);
            padding: 60px 0;
        }

        .specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-top: 40px;
            text-align: center;
        }

        .spec-item {
            padding: 24px 16px;
        }

        .spec-item .spec-number {
            font-size: 40px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .spec-item .spec-number .suffix {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-light);
        }

        .spec-item .spec-label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 8px;
            font-weight: 500;
        }

        .spec-item .spec-desc {
            font-size: 13px;
            color: var(--text-lighter);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-item.open {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

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

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

        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--text-lighter);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 70% 50%, rgba(16, 185, 129, 0.10) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
        }

        .footer-brand .logo i {
            color: var(--primary-light);
        }

        .footer-brand .logo span {
            color: var(--primary-light);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }

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

            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .nav-list a::after {
                display: none;
            }

            .nav-list a.active {
                background: rgba(37, 99, 235, 0.08);
            }

            .nav-list .nav-cta {
                margin-left: 0;
                justify-content: center;
                margin-top: 8px;
            }

            .nav-toggle {
                display: block;
            }

            .page-hero {
                padding: calc(var(--nav-height) + 40px) 0 40px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .section-title {
                font-size: 26px;
            }

            .guide-steps {
                grid-template-columns: 1fr;
            }

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

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

            .spec-item .spec-number {
                font-size: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .cta-section h2 {
                font-size: 28px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn {
                justify-content: center;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .page-hero .hero-badges {
                flex-direction: column;
            }

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

            .guide-step {
                padding: 24px 20px;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }

            .logo {
                font-size: 20px;
            }

            .logo i {
                font-size: 22px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-lighter);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

/* roulang page: category2 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e8a832;
            --primary-dark: #d4941f;
            --primary-light: #f5c45a;
            --secondary: #1a2a3a;
            --secondary-light: #2a3f55;
            --accent: #ff6b35;
            --bg-dark: #0d1a26;
            --bg-card: #132433;
            --bg-section: #0f1e2d;
            --bg-light: #f8f6f0;
            --text-light: #f0ede8;
            --text-muted: #9aaec2;
            --text-dark: #1a1a2e;
            --border-glass: rgba(255, 255, 255, 0.12);
            --border-card: rgba(255, 255, 255, 0.06);
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 56px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --glass-bg: rgba(13, 26, 38, 0.72);
            --glass-border: rgba(255, 255, 255, 0.08);
            --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea,
        select {
            font: inherit;
            color: inherit;
            border: none;
            outline: none;
            background: transparent;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-light);
        }
        p {
            color: var(--text-muted);
            line-height: 1.8;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            background: var(--glass-bg);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid var(--glass-border);
            box-shadow: var(--glass-shadow);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px rgba(232, 168, 50, 0.3));
        }
        .logo span {
            color: var(--primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(232, 168, 50, 0.12);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(232, 168, 50, 0.25);
            transition: var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 28px rgba(232, 168, 50, 0.35) !important;
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-light);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(13, 26, 38, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 12px;
                border-bottom: 1px solid var(--glass-border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                font-size: 1.05rem;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(232, 168, 50, 0.15);
                border-left: 3px solid var(--primary);
            }
            .nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(165deg, #0d1a26 0%, #1a2f44 50%, #0f1e2d 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(232, 168, 50, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(255, 107, 53, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #f0ede8, var(--primary-light), #f0ede8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 28px;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .hero-badges span {
            background: rgba(232, 168, 50, 0.12);
            border: 1px solid rgba(232, 168, 50, 0.2);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 120px 0 60px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .section-title .title-accent {
            display: inline-block;
            width: 48px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin-top: 12px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 活动卡片 ===== */
        .event-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            transform: translateY(-6px);
            border-color: rgba(232, 168, 50, 0.2);
            box-shadow: var(--shadow-md);
        }
        .event-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }
        .event-card-img .event-tag {
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .event-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .event-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
        }
        .event-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .event-meta i {
            color: var(--primary);
            width: 16px;
            margin-right: 4px;
        }
        .event-card .btn {
            align-self: flex-start;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            background: transparent;
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 168, 50, 0.2);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 50, 0.3);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .btn-outline {
            border: 1.5px solid rgba(232, 168, 50, 0.3);
            color: var(--primary-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(232, 168, 50, 0.08);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }
        .btn-center {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }

        /* ===== 分类标签 ===== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }
        .filter-tabs .tab {
            padding: 8px 24px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-tabs .tab:hover {
            border-color: rgba(232, 168, 50, 0.2);
            color: var(--text-light);
        }
        .filter-tabs .tab.active {
            background: rgba(232, 168, 50, 0.12);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(232, 168, 50, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .stat-item i {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 12px;
            opacity: 0.6;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            border-color: rgba(232, 168, 50, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(232, 168, 50, 0.12);
            border: 1px solid rgba(232, 168, 50, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 auto 18px;
        }
        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 168, 50, 0.12);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            transition: var(--transition);
            user-select: none;
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(165deg, #0d1a26, #1a2f44);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 80%, rgba(232, 168, 50, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #09131e;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-light);
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-muted);
            gap: 12px;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .filter-tabs .tab {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== 选中高亮 ===== */
        ::selection {
            background: rgba(232, 168, 50, 0.3);
            color: #fff;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            justify-content: center;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--primary-light);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }