/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --secondary: #e8b830;
            --secondary-light: #f5d060;
            --accent: #e85d3a;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a3a;
            --text-primary: #1a1a2e;
            --text-body: #2d2d44;
            --text-muted: #6b6b80;
            --text-light: #f0f0f5;
            --border-color: #e2e5ef;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacer: 2rem;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-base);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; padding: 0; }
        .container { max-width: 1200px; padding: 0 1.25rem; margin: 0 auto; }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .logo i { color: var(--secondary); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .header-actions { display: flex; align-items: center; gap: 1rem; }
        .nav-channels {
            display: flex;
            gap: 0.25rem;
            padding: 0.25rem 0;
            border-top: 1px solid var(--border-color);
            background: var(--bg-body);
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
        }
        .nav-channels::-webkit-scrollbar { display: none; }
        .nav-channels a {
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .nav-channels a:hover { color: var(--primary); background: rgba(26,42,108,0.06); }
        .nav-channels a.active { color: var(--primary); background: rgba(26,42,108,0.1); font-weight: 600; }
        .nav-channels a i { margin-right: 0.35rem; font-size: 0.8rem; }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #0f1a3a 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-blend-mode: overlay;
            min-height: 72vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: #fff;
            padding: 4rem 1.25rem;
            position: relative;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(0,0,0,0.15);
            z-index: 0;
        }
        .hero-content { position: relative; z-index: 1; max-width: 720px; }
        .hero-badge {
            display: inline-block;
            background: rgba(232,184,48,0.18);
            color: var(--secondary-light);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(232,184,48,0.25);
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .hero h1 span { color: var(--secondary); }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.88;
            max-width: 540px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
        .btn-primary-custom {
            background: var(--secondary);
            color: var(--primary);
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(232,184,48,0.35);
        }
        .btn-primary-custom:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,184,48,0.45); color: var(--primary); }
        .btn-outline-light-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .btn-outline-light-custom:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; }

        /* ===== 通用板块 ===== */
        .section { padding: 5rem 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin-bottom: 2.5rem;
        }
        .section-divider {
            width: 48px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 0.75rem 0 1.5rem 0;
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .card-custom:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-custom .card-img-top { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-custom .card-body { padding: 1.25rem 1.5rem 1.5rem; }
        .card-custom .card-tag {
            display: inline-block;
            background: rgba(26,42,108,0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.6rem;
        }
        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .card-custom .card-text {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card-custom .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-top: 0.75rem;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge-custom {
            background: var(--primary);
            color: #fff;
            font-weight: 500;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
        }
        .badge-secondary {
            background: rgba(232,184,48,0.15);
            color: #9a7a20;
            font-weight: 500;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
        }

        /* ===== 数据 / 统计 ===== */
        .stat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.5rem; }
        .stat-item {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem 1rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label { font-size: 0.92rem; color: var(--text-muted); margin-top: 0.3rem; }

        /* ===== 分类入口网格 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .cat-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .cat-card .cat-body { padding: 1.25rem 1.5rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .cat-card .cat-title { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.3rem; }
        .cat-card .cat-desc { color: var(--text-muted); font-size: 0.9rem; flex: 1; }
        .cat-card .cat-link {
            display: inline-flex; align-items: center; gap: 0.4rem;
            color: var(--primary); font-weight: 600; font-size: 0.9rem;
            margin-top: 0.75rem;
        }
        .cat-card .cat-link i { transition: var(--transition); }
        .cat-card:hover .cat-link i { transform: translateX(4px); }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            margin-bottom: 0.75rem;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-question {
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-question i { color: var(--primary-light); font-size: 1.1rem; transition: var(--transition); }
        .faq-answer {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-top: 0.6rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #0f1a3a);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            color: #fff;
            text-align: center;
        }
        .cta-section h3 { font-size: 1.8rem; font-weight: 700; }
        .cta-section p { opacity: 0.85; max-width: 520px; margin: 0.5rem auto 1.5rem; }
        .cta-section .btn-primary-custom { font-size: 1.05rem; padding: 0.85rem 2.5rem; }

        /* ===== 内容列表 ===== */
        .content-list { display: flex; flex-direction: column; gap: 1rem; }
        .content-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }
        .content-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
        .content-item .ci-index {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-light);
            opacity: 0.3;
            min-width: 2rem;
        }
        .content-item .ci-body { flex: 1; }
        .content-item .ci-title { font-weight: 600; color: var(--text-primary); margin-bottom: 0.2rem; }
        .content-item .ci-meta { font-size: 0.82rem; color: var(--text-muted); display: flex; gap: 1rem; }
        .content-item .ci-cat {
            font-size: 0.75rem;
            background: rgba(232,184,48,0.12);
            color: #9a7a20;
            padding: 0.15rem 0.6rem;
            border-radius: 50px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .site-footer .logo { color: #fff; }
        .site-footer .logo i { color: var(--secondary); }
        .site-footer .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; margin: 1.5rem 0; }
        .footer-links a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .footer-links a:hover { color: var(--secondary); }
        .footer-copy { text-align: center; font-size: 0.85rem; opacity: 0.6; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 1.5rem; margin-top: 1.5rem; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stat-grid { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .section { padding: 3rem 0; }
            .section-title { font-size: 1.6rem; }
            .category-grid { grid-template-columns: 1fr; }
            .stat-grid { grid-template-columns: repeat(2,1fr); gap: 0.75rem; }
            .stat-number { font-size: 1.8rem; }
            .header-top { padding: 0.5rem 0; }
            .logo { font-size: 1.25rem; }
            .cta-section { padding: 2.5rem 1.5rem; }
            .cta-section h3 { font-size: 1.4rem; }
            .nav-channels { gap: 0.1rem; }
            .nav-channels a { padding: 0.4rem 0.7rem; font-size: 0.82rem; }
            .content-item { flex-direction: column; gap: 0.3rem; }
            .content-item .ci-index { min-width: auto; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary-custom, .btn-outline-light-custom { width: 100%; max-width: 260px; }
            .stat-grid { grid-template-columns: 1fr 1fr; }
            .footer-links { gap: 0.8rem; }
        }

        /* ===== 工具类 ===== */
        .text-primary-custom { color: var(--primary) !important; }
        .text-secondary-custom { color: var(--secondary) !important; }
        .bg-soft-primary { background: rgba(26,42,108,0.04); }
        .gap-1 { gap: 0.5rem; }
        .gap-2 { gap: 1rem; }
        .mb-0 { margin-bottom: 0; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }

        /* ===== 进度条 / 序列卡片（视觉套装） ===== */
        .progress-track {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 0;
        }
        .progress-step {
            flex: 1;
            text-align: center;
            position: relative;
        }
        .progress-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 0.4rem;
        }
        .progress-step .step-label { font-size: 0.85rem; color: var(--text-muted); }
        .progress-step.active .step-number { background: var(--secondary); color: var(--primary); }
        .progress-step.active .step-label { color: var(--text-primary); font-weight: 600; }
        .progress-step::after {
            content: '';
            position: absolute;
            top: 20px;
            left: calc(50% + 24px);
            width: calc(100% - 48px);
            height: 2px;
            background: var(--border-color);
            z-index: -1;
        }
        .progress-step:last-child::after { display: none; }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #2563eb;
        --primary-dark: #1d4ed8;
        --primary-light: #3b82f6;
        --primary-bg: #eff6ff;
        --secondary: #7c3aed;
        --secondary-light: #ede9fe;
        --accent: #f59e0b;
        --accent-light: #fef3c7;
        --success: #10b981;
        --danger: #ef4444;
        --bg-body: #f8fafc;
        --bg-card: #ffffff;
        --bg-dark: #0f172a;
        --bg-dark-alt: #1e293b;
        --text-primary: #0f172a;
        --text-secondary: #475569;
        --text-muted: #94a3b8;
        --text-light: #cbd5e1;
        --text-white: #ffffff;
        --border-color: #e2e8f0;
        --border-light: #f1f5f9;
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
        --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    }

    /* ===== 基础重置 ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-sans);
        background: var(--bg-body);
        color: var(--text-primary);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; }
    ul, ol { list-style: none; padding: 0; margin: 0; }

    /* ===== 容器 ===== */
    .container { max-width: 1200px; padding: 0 24px; margin: 0 auto; }
    @media (max-width: 768px) { .container { padding: 0 16px; } }

    /* ===== 版式 ===== */
    h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); margin-bottom: 0.5em; }
    h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
    h2 { font-size: 1.75rem; letter-spacing: -0.01em; }
    h3 { font-size: 1.35rem; }
    h4 { font-size: 1.15rem; }
    p { margin-bottom: 1rem; color: var(--text-secondary); }
    @media (max-width: 768px) { h1 { font-size: 1.65rem; } h2 { font-size: 1.35rem; } h3 { font-size: 1.15rem; } }

    .section-title {
        text-align: center;
        margin-bottom: 2.5rem;
    }
    .section-title h2 {
        position: relative;
        display: inline-block;
    }
    .section-title h2::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 48px;
        height: 3px;
        border-radius: 3px;
        background: var(--primary);
    }
    .section-title p {
        color: var(--text-muted);
        font-size: 1.05rem;
        margin-top: 0.75rem;
    }

    /* ===== Site Header ===== */
    .site-header {
        background: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1000;
        backdrop-filter: blur(12px);
        background: rgba(255,255,255,0.96);
        box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    }
    .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0 10px;
    }
    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--text-primary);
        letter-spacing: -0.03em;
    }
    .logo i { color: var(--primary); font-size: 1.6rem; }
    .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .logo:hover { color: var(--text-primary); opacity: 0.9; }
    .header-actions { display: flex; align-items: center; gap: 12px; }
    .header-actions .btn { font-size: 0.85rem; padding: 6px 18px; border-radius: 50px; }

    .nav-channels {
        display: flex;
        gap: 4px;
        padding: 0 0 2px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .nav-channels::-webkit-scrollbar { display: none; }
    .nav-channels a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 20px;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 50px;
        white-space: nowrap;
        transition: var(--transition);
        border: 1px solid transparent;
    }
    .nav-channels a i { font-size: 0.8rem; opacity: 0.7; }
    .nav-channels a:hover {
        color: var(--primary);
        background: var(--primary-bg);
        border-color: var(--border-color);
    }
    .nav-channels a.active {
        color: var(--text-white);
        background: var(--primary);
        border-color: var(--primary);
        box-shadow: 0 4px 12px rgba(37,99,235,0.3);
    }
    .nav-channels a.active i { opacity: 1; }
    @media (max-width: 576px) {
        .header-top { padding: 10px 0 6px; }
        .logo { font-size: 1.2rem; }
        .logo i { font-size: 1.3rem; }
        .nav-channels a { padding: 6px 14px; font-size: 0.82rem; }
    }

    /* ===== Banner 内页横幅 ===== */
    .page-banner {
        position: relative;
        padding: 80px 0 60px;
        background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
        overflow: hidden;
        min-height: 200px;
        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 { position: relative; z-index: 2; }
    .page-banner h1 {
        color: var(--text-white);
        font-size: 2rem;
        margin-bottom: 0.35rem;
        max-width: 800px;
    }
    .page-banner .banner-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 24px;
        color: var(--text-light);
        font-size: 0.9rem;
        margin-top: 0.5rem;
    }
    .page-banner .banner-meta span { display: inline-flex; align-items: center; gap: 6px; }
    .page-banner .banner-meta i { color: var(--primary-light); opacity: 0.7; }
    .page-banner .breadcrumb {
        background: transparent;
        padding: 0;
        margin-bottom: 12px;
        color: var(--text-light);
        font-size: 0.85rem;
    }
    .page-banner .breadcrumb a { color: var(--text-light); }
    .page-banner .breadcrumb a:hover { color: var(--text-white); }
    .page-banner .breadcrumb .separator { margin: 0 8px; color: var(--text-muted); }
    @media (max-width: 768px) {
        .page-banner { padding: 60px 0 40px; min-height: 160px; }
        .page-banner h1 { font-size: 1.4rem; }
        .page-banner .banner-meta { gap: 10px 16px; font-size: 0.8rem; }
    }

    /* ===== 文章正文 ===== */
    .article-section {
        padding: 50px 0 70px;
    }
    .article-wrapper {
        max-width: 880px;
        margin: 0 auto;
    }
    .article-card {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
    }
    .article-thumbnail {
        width: 100%;
        max-height: 420px;
        object-fit: cover;
        display: block;
    }
    .article-body {
        padding: 40px 48px;
    }
    .article-body .article-title {
        font-size: 1.85rem;
        font-weight: 700;
        line-height: 1.3;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
    }
    .article-body .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 24px;
        padding-bottom: 20px;
        margin-bottom: 24px;
        border-bottom: 1px solid var(--border-color);
        color: var(--text-muted);
        font-size: 0.9rem;
    }
    .article-body .article-meta span { display: inline-flex; align-items: center; gap: 6px; }
    .article-body .article-meta i { color: var(--primary); opacity: 0.6; }
    .article-body .article-tag {
        display: inline-block;
        padding: 2px 14px;
        border-radius: 50px;
        background: var(--primary-bg);
        color: var(--primary);
        font-size: 0.8rem;
        font-weight: 500;
    }
    .article-content {
        font-size: 1.05rem;
        line-height: 1.85;
        color: var(--text-secondary);
    }
    .article-content p {
        margin-bottom: 1.25rem;
    }
    .article-content h2, .article-content h3 {
        margin-top: 2rem;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
    }
    .article-content ul, .article-content ol {
        padding-left: 1.5rem;
        margin-bottom: 1.25rem;
        list-style: disc;
    }
    .article-content li { margin-bottom: 0.35rem; }
    .article-content a { color: var(--primary); text-decoration: underline; }
    .article-content blockquote {
        border-left: 4px solid var(--primary);
        padding: 12px 20px;
        margin: 1.5rem 0;
        background: var(--primary-bg);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
    }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 1.5rem auto;
        box-shadow: var(--shadow-sm);
    }
    .article-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.5rem 0;
        font-size: 0.95rem;
    }
    .article-content th, .article-content td {
        border: 1px solid var(--border-color);
        padding: 10px 16px;
        text-align: left;
    }
    .article-content th { background: var(--primary-bg); font-weight: 600; }
    @media (max-width: 768px) {
        .article-body { padding: 24px 20px; }
        .article-body .article-title { font-size: 1.35rem; }
        .article-content { font-size: 1rem; }
    }

    /* ===== 文章未找到 ===== */
    .not-found-box {
        text-align: center;
        padding: 60px 24px;
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        border: 1px solid var(--border-color);
    }
    .not-found-box i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
    .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
    .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
    .not-found-box .btn { border-radius: 50px; padding: 10px 32px; font-weight: 500; }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 50px 0 60px;
        background: var(--bg-body);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
        transition: var(--transition);
        box-shadow: var(--shadow-sm);
    }
    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: var(--primary-light);
    }
    .related-card img {
        width: 100%;
        height: 180px;
        object-fit: cover;
    }
    .related-card .card-body {
        padding: 16px 20px 20px;
    }
    .related-card .card-body h4 {
        font-size: 1.05rem;
        font-weight: 600;
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body h4 a { color: var(--text-primary); }
    .related-card .card-body h4 a:hover { color: var(--primary); }
    .related-card .card-body p {
        font-size: 0.88rem;
        color: var(--text-muted);
        margin-bottom: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 10px;
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .related-card .card-meta .tag { padding: 2px 12px; border-radius: 50px; background: var(--primary-bg); color: var(--primary); font-size: 0.75rem; font-weight: 500; }
    @media (max-width: 992px) {
        .related-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 576px) {
        .related-grid { grid-template-columns: 1fr; }
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-dark);
        color: var(--text-light);
        padding: 40px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .site-footer .logo { color: var(--text-white); margin-bottom: 12px; display: inline-flex; }
    .site-footer .logo span { background: linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .site-footer .footer-links {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px 24px;
        margin: 16px 0 18px;
    }
    .site-footer .footer-links a {
        color: rgba(255,255,255,0.6);
        font-size: 0.9rem;
        transition: var(--transition);
        padding: 4px 0;
    }
    .site-footer .footer-links a:hover { color: var(--text-white); }
    .site-footer .footer-copy {
        color: rgba(255,255,255,0.35);
        font-size: 0.82rem;
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: 18px;
        margin-top: 4px;
    }
    .site-footer .footer-copy a { color: rgba(255,255,255,0.4); }
    .site-footer .footer-copy a:hover { color: rgba(255,255,255,0.7); }

    /* ===== 通用按钮 ===== */
    .btn {
        border-radius: 50px;
        padding: 10px 28px;
        font-weight: 500;
        font-size: 0.95rem;
        transition: var(--transition);
        border: none;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        cursor: pointer;
    }
    .btn-primary {
        background: var(--primary);
        color: var(--text-white);
        box-shadow: 0 4px 14px rgba(37,99,235,0.3);
    }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.35); color: var(--text-white); }
    .btn-outline-secondary {
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-secondary);
    }
    .btn-outline-secondary:hover { background: var(--bg-body); border-color: var(--primary); color: var(--primary); }
    .btn-sm { padding: 6px 18px; font-size: 0.85rem; }

    /* ===== 面包屑 ===== */
    .breadcrumb-custom {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 12px;
    }
    .breadcrumb-custom a { color: var(--text-muted); }
    .breadcrumb-custom a:hover { color: var(--primary); }
    .breadcrumb-custom .sep { color: var(--border-color); margin: 0 4px; }

    /* ===== 辅助 ===== */
    .text-center { text-align: center; }
    .mt-2 { margin-top: 0.5rem; }
    .mt-3 { margin-top: 1rem; }
    .mt-4 { margin-top: 1.5rem; }
    .mb-0 { margin-bottom: 0; }
    .gap-2 { gap: 0.5rem; }
    .gap-3 { gap: 1rem; }
    .fw-bold { font-weight: 700; }
    .d-none { display: none; }
    .d-inline-flex { display: inline-flex; }
    @media (min-width: 576px) { .d-sm-inline-flex { display: inline-flex; } }

    /* ===== 响应式微调 ===== */
    @media (max-width: 576px) {
        .article-thumbnail { max-height: 220px; }
        .page-banner h1 { font-size: 1.25rem; }
        .related-card img { height: 150px; }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2a6df4;
            --primary-dark: #1a4fa0;
            --primary-light: #e8f0fe;
            --secondary: #f5a623;
            --secondary-dark: #d4891e;
            --accent: #34c759;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-body: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.14);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'system-ui', -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
            --spacing-section: 5rem;
        }
        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }
        /* ===== Header / 杂志频道导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            gap: 1rem;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
            white-space: nowrap;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.35rem 0 0.15rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
            border-top: 1px solid var(--border-light);
        }
        .nav-channels::-webkit-scrollbar {
            display: none;
        }
        .nav-channels a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.1rem;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
            background: transparent;
            border: 1px solid transparent;
        }
        .nav-channels a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-channels a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: transparent;
        }
        .nav-channels a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 2px 12px rgba(42, 109, 244, 0.35);
        }
        .nav-channels a.active i {
            opacity: 1;
        }
        @media (max-width: 576px) {
            .header-top {
                padding: 0.5rem 0;
            }
            .logo {
                font-size: 1.15rem;
                gap: 0.4rem;
            }
            .logo i {
                font-size: 1.25rem;
            }
            .nav-channels a {
                padding: 0.3rem 0.8rem;
                font-size: 0.8rem;
                gap: 0.3rem;
            }
            .nav-channels a i {
                font-size: 0.75rem;
            }
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3rem 0 2rem;
            margin-top: var(--spacing-section);
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .site-footer .logo span {
            background: linear-gradient(135deg, #f0f4ff, #c7d9ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .logo i {
            color: #6d9eff;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.2rem 2.2rem;
            margin: 1.2rem 0 1.5rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-copy {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 0.8rem;
        }
        .footer-copy a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-copy a:hover {
            color: #fff;
        }
        @media (max-width: 576px) {
            .site-footer {
                padding: 2rem 0 1.5rem;
            }
            .footer-links {
                gap: 0.8rem 1.5rem;
            }
        }
        /* ===== 通用板块 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 2.5rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }
        /* ===== Hero / 内页横幅 ===== */
        .page-hero {
            position: relative;
            padding: 5rem 0 4.5rem;
            background: linear-gradient(135deg, #0f172a 0%, #1a2a4a 50%, #0f172a 100%);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(42, 109, 244, 0.15) 0%, transparent 70%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #b8cfff;
            padding: 0.35rem 1.1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        .page-hero .hero-badge i {
            color: var(--secondary);
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.03em;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 2rem;
            line-height: 1.6;
        }
        .page-hero .hero-cta {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem;
        }
        .page-hero .hero-cta .btn {
            padding: 0.7rem 2rem;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .page-hero .hero-cta .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .page-hero .hero-cta .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(42, 109, 244, 0.4);
        }
        .page-hero .hero-cta .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.3);
            color: rgba(255, 255, 255, 0.9);
            background: transparent;
        }
        .page-hero .hero-cta .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 3.5rem 0 3rem;
                min-height: 280px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
            .page-hero .hero-cta .btn {
                padding: 0.55rem 1.4rem;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-badge {
                font-size: 0.7rem;
                padding: 0.25rem 0.8rem;
            }
        }
        /* ===== 入口卡片网格 ===== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .entry-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .entry-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .entry-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--text-dark);
        }
        .entry-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media (max-width: 992px) {
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .entry-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .entry-card {
                padding: 1.5rem 1rem;
            }
            .entry-card .icon-wrap {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
            }
        }
        /* ===== 步骤/流程 ===== */
        .step-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 1rem;
            right: 1.2rem;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--border-color);
            line-height: 1;
            transition: var(--transition);
        }
        .step-item:hover::before {
            color: var(--primary-light);
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 0.8rem;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        @media (max-width: 992px) {
            .step-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .step-row {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .step-item {
                padding: 1.5rem 1rem;
            }
        }
        /* ===== 状态检测 / 数据卡片 ===== */
        .status-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }
        .status-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.2rem;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .status-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .status-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .status-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        .status-card .stat-badge {
            display: inline-block;
            margin-top: 0.5rem;
            padding: 0.15rem 0.7rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            background: #dcfce7;
            color: #16a34a;
        }
        .status-card .stat-badge.warning {
            background: #fef3c7;
            color: #d97706;
        }
        @media (max-width: 992px) {
            .status-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .status-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .status-card {
                padding: 1rem 0.8rem;
            }
            .status-card .stat-num {
                font-size: 1.5rem;
            }
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1.1rem 1.4rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .faq-question .faq-toggle {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 0.75rem;
        }
        .faq-item.active .faq-question .faq-toggle {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.4rem 1.1rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        @media (max-width: 576px) {
            .faq-question {
                padding: 0.9rem 1rem;
                font-size: 0.88rem;
            }
            .faq-answer {
                padding: 0 1rem 0.9rem;
                font-size: 0.82rem;
            }
        }
        /* ===== CTA区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #1a4fa0 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
        }
        .cta-block p {
            font-size: 1rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 1.8rem;
        }
        .cta-block .btn {
            padding: 0.7rem 2.2rem;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .cta-block .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .cta-block .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }
        .cta-block .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
        }
        .cta-block .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.9rem;
            }
            .cta-block .btn {
                padding: 0.55rem 1.4rem;
                font-size: 0.85rem;
            }
        }
        /* ===== 内容卡片列表 ===== */
        .content-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .content-card-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .content-card-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .content-card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .content-card-item .card-body {
            padding: 1.3rem 1.2rem 1.5rem;
        }
        .content-card-item .card-body .tag {
            display: inline-block;
            padding: 0.15rem 0.6rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .content-card-item .card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-dark);
        }
        .content-card-item .card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media (max-width: 992px) {
            .content-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .content-cards {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .content-card-item .card-img {
                height: 170px;
            }
        }
        /* ===== 安全提示条 ===== */
        .safety-tip {
            background: #fef9e7;
            border-left: 4px solid var(--secondary);
            padding: 1rem 1.5rem;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            font-size: 0.9rem;
            color: var(--text-body);
            max-width: 820px;
            margin: 0 auto;
        }
        .safety-tip i {
            color: var(--secondary);
            font-size: 1.2rem;
            margin-top: 0.1rem;
            flex-shrink: 0;
        }
        @media (max-width: 576px) {
            .safety-tip {
                padding: 0.8rem 1rem;
                font-size: 0.82rem;
                flex-direction: column;
                gap: 0.4rem;
            }
        }
        /* ===== 通用间距 ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-padding-sm {
            padding: 3rem 0;
        }
        .bg-white {
            background: var(--bg-white);
        }
        .bg-light {
            background: var(--bg-body);
        }
        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
            }
            .section-padding {
                padding: var(--spacing-section) 0;
            }
            .section-padding-sm {
                padding: 2rem 0;
            }
        }
        @media (max-width: 576px) {
            :root {
                --spacing-section: 2.5rem;
            }
        }
        /* ===== 按钮基础覆盖 ===== */
        .btn {
            border-radius: 100px !important;
            padding: 0.55rem 1.6rem !important;
            font-weight: 600 !important;
            transition: var(--transition) !important;
            font-size: 0.9rem !important;
        }
        .btn-primary {
            background: var(--primary) !important;
            border-color: var(--primary) !important;
        }
        .btn-primary:hover {
            background: var(--primary-dark) !important;
            border-color: var(--primary-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(42, 109, 244, 0.35);
        }
        .btn-outline-primary {
            color: var(--primary) !important;
            border-color: var(--primary) !important;
        }
        .btn-outline-primary:hover {
            background: var(--primary) !important;
            color: #fff !important;
            transform: translateY(-2px);
        }
        /* ===== 面包屑 ===== */
        .breadcrumb-nav {
            padding: 1rem 0 0;
            font-size: 0.8rem;
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.5);
        }
        .breadcrumb-nav a:hover {
            color: #fff;
        }
        .breadcrumb-nav span {
            color: rgba(255, 255, 255, 0.3);
            margin: 0 0.4rem;
        }
        .breadcrumb-nav .current {
            color: rgba(255, 255, 255, 0.8);
        }
        /* ===== 安全认证徽标 ===== */
        .badge-safe {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: #dcfce7;
            color: #16a34a;
            padding: 0.2rem 0.8rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
        }
        .badge-safe i {
            font-size: 0.65rem;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #0f172a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-alt: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #334155;
            --text-muted: #94a3b8;
            --text-light: #f1f5f9;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1280px;
            --header-height: 130px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 10px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--secondary);
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .btn {
            font-size: 0.85rem;
            padding: 6px 18px;
            transition: var(--transition);
            background: transparent;
            border-color: var(--border-color);
            color: var(--text-muted);
            border-radius: 50px;
        }
        .header-actions .btn:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 频道导航 */
        .nav-channels {
            display: flex;
            gap: 4px;
            padding: 6px 0 12px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }
        .nav-channels::-webkit-scrollbar {
            display: none;
        }
        .nav-channels a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 50px;
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
            background: transparent;
        }
        .nav-channels a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-channels a:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--border-color);
        }
        .nav-channels a.active {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }
        .nav-channels a.active i {
            opacity: 1;
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 110px;
            }
            .header-top {
                padding: 10px 0 6px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .nav-channels a {
                padding: 6px 14px;
                font-size: 0.82rem;
                gap: 6px;
            }
            .nav-channels a i {
                font-size: 0.75rem;
            }
            .header-actions .btn span {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .nav-channels a {
                padding: 5px 12px;
                font-size: 0.75rem;
                gap: 4px;
            }
            .logo {
                font-size: 1rem;
            }
            .logo i {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 90px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.88)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            overflow: hidden;
            isolation: isolate;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(37, 99, 235, 0.15), transparent 70%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 24px;
        }
        .page-hero .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--transition);
        }
        .page-hero .breadcrumb-nav a:hover {
            color: var(--text-white);
        }
        .page-hero .breadcrumb-nav span {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
            max-width: 720px;
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .page-hero .hero-tags .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .page-hero .hero-tags .tag:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
        }
        .page-hero .hero-tags .tag i {
            margin-right: 6px;
            font-size: 0.75rem;
            opacity: 0.7;
        }

        @media (max-width: 992px) {
            .page-hero {
                padding: 60px 0 70px;
                background-attachment: scroll;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0 50px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero h1 i {
                margin-right: 8px;
                font-size: 1.4rem;
            }
            .page-hero p {
                font-size: 0.92rem;
            }
            .page-hero .breadcrumb-nav {
                font-size: 0.75rem;
                margin-bottom: 16px;
            }
            .page-hero .hero-tags .tag {
                font-size: 0.72rem;
                padding: 4px 14px;
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-sm {
            padding: 50px 0;
        }
        .section-lg {
            padding: 100px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }
        .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-heading .section-title i {
            color: var(--primary);
            margin-right: 10px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-lg {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
            }
            .section-heading {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 480px) {
            .section-title {
                font-size: 1.35rem;
            }
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-custom .card-img-top {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: var(--transition);
        }
        .card-custom:hover .card-img-top {
            transform: scale(1.02);
        }
        .card-custom .card-body {
            padding: 24px;
        }
        .card-custom .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .card-custom .card-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .card-custom .card-meta i {
            margin-right: 4px;
        }
        .card-custom .badge-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
            transition: var(--transition);
        }
        .card-custom:hover .badge-tag {
            background: var(--primary);
            color: var(--text-white);
        }

        @media (max-width: 768px) {
            .card-custom .card-body {
                padding: 18px;
            }
            .card-custom .card-title {
                font-size: 1rem;
            }
        }

        /* ===== 按钮 ===== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-custom-primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }
        .btn-custom-primary:hover {
            background: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
        }
        .btn-custom-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
        }
        .btn-custom-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-2px);
        }
        .btn-custom-light {
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
        }
        .btn-custom-light:hover {
            background: rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-custom-sm {
            padding: 8px 20px;
            font-size: 0.82rem;
        }
        .btn-custom-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ===== 功能指南板块 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .guide-card .guide-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .guide-card:hover .guide-icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }
        .guide-card h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .guide-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .guide-step {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-bg);
            padding: 3px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        .guide-card .guide-link {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .guide-card .guide-link i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .guide-card .guide-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }
        .guide-card .guide-link:hover i {
            transform: translateX(3px);
        }

        @media (max-width: 768px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-card {
                padding: 24px 20px;
            }
        }

        /* ===== 步骤流程 ===== */
        .steps-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .steps-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 18px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }
        .step-item h5 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .step-item .step-icon {
            font-size: 1.8rem;
            color: var(--primary-light);
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .step-item {
                padding: 24px 16px;
            }
            .step-item h5 {
                font-size: 0.92rem;
            }
            .step-item p {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-body);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
        }
        .faq-item .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item .faq-answer.show {
            display: block;
        }
        .faq-item .faq-answer p {
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.85rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.92)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 80px 0;
            isolation: isolate;
        }
        .stats-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(37, 99, 235, 0.12), transparent 60%);
            z-index: 1;
            pointer-events: none;
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-item .stat-number .suffix {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            opacity: 0.8;
        }

        @media (max-width: 768px) {
            .stats-section {
                padding: 50px 0;
                background-attachment: scroll;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .stat-item .stat-number .suffix {
                font-size: 1.2rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.08), transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 580px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-custom {
            background: var(--text-white);
            color: var(--primary);
            border: none;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-custom:hover {
            background: var(--accent-light);
            color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }
        .cta-section .btn-custom-outline-light {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .cta-section .btn-custom-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-white);
            color: var(--text-white);
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .content-card .content-thumb {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-card:hover .content-thumb {
            transform: scale(1.02);
        }
        .content-card .content-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .content-body .badge {
            align-self: flex-start;
            margin-bottom: 12px;
            padding: 4px 14px;
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary);
            border: none;
            transition: var(--transition);
        }
        .content-card:hover .content-body .badge {
            background: var(--primary);
            color: var(--text-white);
        }
        .content-card .content-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .content-card .content-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .content-card .content-body .content-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .content-card .content-body .content-meta i {
            margin-right: 4px;
        }

        @media (max-width: 768px) {
            .content-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .content-card .content-body {
                padding: 18px 18px 20px;
            }
            .content-card .content-body h4 {
                font-size: 1rem;
            }
        }

        /* ===== 相关标签 ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-decoration: none;
        }
        .tags-cloud .tag-item:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }
        .tags-cloud .tag-item i {
            font-size: 0.75rem;
            opacity: 0.7;
        }
        .tags-cloud .tag-item:hover i {
            opacity: 1;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer .logo {
            color: var(--text-white);
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .site-footer .logo i {
            color: var(--primary-light);
        }
        .site-footer .logo span {
            background: linear-gradient(135deg, #f1f5f9, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 24px;
            margin-bottom: 20px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            text-decoration: none;
            transition: var(--transition);
            padding: 4px 0;
        }
        .footer-links a:hover {
            color: var(--text-white);
        }
        .footer-copy {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            margin-top: 6px;
        }
        .footer-copy a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }
        .footer-copy a:hover {
            color: var(--text-white);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 36px 0 28px;
            }
            .footer-links {
                gap: 6px 16px;
            }
            .footer-links a {
                font-size: 0.82rem;
            }
            .footer-copy {
                font-size: 0.75rem;
            }
        }

        /* ===== 额外辅助 ===== */
        .divider {
            width: 60px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: 16px auto 24px;
        }
        .divider-left {
            margin: 12px 0 20px;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .bg-soft-primary {
            background: var(--primary-bg);
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mt-5 {
            margin-top: 40px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-3 {
            margin-bottom: 16px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }
        .mb-5 {
            margin-bottom: 40px;
        }