/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a83a;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a20;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f2440;
            --text-dark: #1a2a3a;
            --text-mid: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #ffffff;
            --border: #e0e6ee;
            --border-light: #f0f4f8;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(26, 58, 92, 0.08);
            --shadow-hover: 0 10px 40px rgba(26, 58, 92, 0.16);
            --shadow-card: 0 2px 16px rgba(26, 58, 92, 0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

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

        /* ===== 容器 ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

        /* ===== 通用间距 ===== */
        .section { padding: 80px 0; }
        .section-sm { padding: 48px 0; }
        .section-title { font-size: 2rem; margin-bottom: 12px; text-align: center; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-mid); text-align: center; max-width: 640px; margin: 0 auto 48px; line-height: 1.6; }
        .section-divider { width: 64px; height: 4px; background: var(--secondary); border-radius: 4px; margin: 16px auto 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            box-shadow: 0 2px 12px rgba(26, 58, 92, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-logo i { color: var(--secondary); font-size: 1.6rem; }
        .site-logo:hover { color: var(--primary); }
        .site-logo span { font-weight: 300; color: var(--text-light); font-size: 0.9rem; }

        /* 分段标签导航 */
        .nav-tabs {
            display: flex;
            gap: 6px;
            background: var(--bg-light);
            padding: 4px;
            border-radius: 40px;
            border: 1px solid var(--border);
        }
        .nav-tabs a {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mid);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs a:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
        .nav-tabs a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 12px rgba(26,58,92,0.2);
        }
        .nav-tabs a.active:hover { background: var(--primary-light); color: var(--text-white); }

        .header-cta {
            background: var(--secondary);
            color: var(--text-dark);
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-cta:hover { background: var(--secondary-light); color: var(--text-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,168,58,0.35); }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 4px 8px;
            border-radius: 8px;
            background: var(--bg-light);
        }
        .mobile-menu-btn:hover { background: var(--border); }

        /* ===== Hero / 首屏 ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 60%;
            height: 140%;
            background: radial-gradient(ellipse, rgba(232,168,58,0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.10);
            color: var(--secondary-light);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 20px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            max-width: 720px;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight { color: var(--secondary); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.80);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: var(--text-dark);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover { background: var(--secondary-light); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(232,168,58,0.30); }
        .hero-actions .btn-outline {
            border: 2px solid rgba(255,255,255,0.25);
            color: var(--text-white);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
        }
        .hero-actions .btn-outline:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(232,168,58,0.08); transform: translateY(-3px); }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stats .stat-item { display: flex; flex-direction: column; }
        .hero-stats .stat-number { font-size: 2rem; font-weight: 800; color: var(--text-white); }
        .hero-stats .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.60); }

        /* ===== 通用卡片 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-body { padding: 28px 24px; }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 16px;
            background: var(--bg-light);
            color: var(--primary);
        }
        .card h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .card p { color: var(--text-mid); font-size: 0.95rem; line-height: 1.6; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-mid);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .tag-primary { background: rgba(26,58,92,0.08); color: var(--primary); border-color: transparent; }
        .tag-secondary { background: rgba(232,168,58,0.12); color: var(--secondary-dark); border-color: transparent; }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--secondary);
            color: var(--text-dark);
        }

        /* ===== 按钮 ===== */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 30px; font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: none; cursor: pointer; }
        .btn-primary { background: var(--primary); color: var(--text-white); }
        .btn-primary:hover { background: var(--primary-light); color: var(--text-white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,58,92,0.20); }
        .btn-secondary { background: var(--secondary); color: var(--text-dark); }
        .btn-secondary:hover { background: var(--secondary-light); color: var(--text-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,58,0.30); }
        .btn-outline { border: 2px solid var(--border); color: var(--text-dark); background: transparent; }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

        /* ===== 列表 ===== */
        .list-check li { display: flex; align-items: flex-start; gap: 10px; padding: 8px 0; color: var(--text-mid); }
        .list-check li i { color: var(--secondary); font-size: 1rem; margin-top: 4px; flex-shrink: 0; }

        /* ===== 资讯列表（CMS） ===== */
        .post-list { display: flex; flex-direction: column; gap: 16px; }
        .post-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            gap: 16px;
        }
        .post-item:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
        .post-item-left { display: flex; align-items: center; gap: 16px; flex: 1; min-width: 0; }
        .post-item .post-cat { font-size: 0.75rem; font-weight: 600; padding: 2px 12px; border-radius: 20px; background: rgba(26,58,92,0.06); color: var(--primary); white-space: nowrap; }
        .post-item .post-title { font-weight: 600; color: var(--text-dark); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: var(--transition); }
        .post-item:hover .post-title { color: var(--primary); }
        .post-item .post-date { font-size: 0.85rem; color: var(--text-light); white-space: nowrap; flex-shrink: 0; }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; counter-reset: step; }
        .step-item { text-align: center; position: relative; padding: 32px 16px; background: var(--bg-white); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
        .step-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
        .step-item::before { counter-increment: step; content: counter(step); position: absolute; top: -14px; left: 50%; transform: translateX(-50%); width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: var(--text-white); font-weight: 700; font-size: 0.9rem; display: flex; align-items: center; justify-content: center; border: 3px solid var(--bg-light); }
        .step-item .step-icon { font-size: 2.2rem; color: var(--secondary); margin-bottom: 12px; margin-top: 8px; }
        .step-item h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .step-item p { font-size: 0.9rem; color: var(--text-mid); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-white); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { width: 100%; padding: 18px 24px; display: flex; justify-content: space-between; align-items: center; font-weight: 600; color: var(--text-dark); font-size: 1rem; background: none; border: none; text-align: left; cursor: pointer; transition: var(--transition); }
        .faq-question i { transition: transform 0.3s; color: var(--text-light); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 24px; }
        .faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }
        .faq-answer p { color: var(--text-mid); font-size: 0.95rem; line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); padding: 80px 0; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; top: -50%; left: -30%; width: 80%; height: 200%; background: radial-gradient(ellipse, rgba(232,168,58,0.08) 0%, transparent 70%); pointer-events: none; }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.4rem; color: var(--text-white); margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.80); max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn-cta { background: var(--secondary); color: var(--text-dark); padding: 16px 48px; border-radius: 40px; font-weight: 700; font-size: 1.1rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 10px; }
        .cta-section .btn-cta:hover { background: var(--secondary-light); transform: translateY(-3px); box-shadow: 0 12px 36px rgba(232,168,58,0.30); }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.65); padding: 48px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand .site-logo span { color: rgba(255,255,255,0.40); }
        .footer-brand p { font-size: 0.9rem; max-width: 300px; line-height: 1.7; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--secondary); padding-left: 6px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.40); }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .nav-tabs { display: none; }
            .mobile-menu-btn { display: block; }
            .header-cta { padding: 8px 18px; font-size: 0.85rem; }
            .nav-tabs.mobile-open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg-white); border-radius: 0 0 var(--radius) var(--radius); padding: 12px; box-shadow: var(--shadow); border: 1px solid var(--border); gap: 4px; }
            .nav-tabs.mobile-open a { padding: 12px 20px; border-radius: var(--radius-sm); }
            .hero { padding: 60px 0 48px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stats .stat-number { font-size: 1.5rem; }
            .section { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
            .steps { grid-template-columns: 1fr 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.8rem; }
            .post-item { flex-direction: column; align-items: flex-start; }
            .post-item-left { flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
            .steps { grid-template-columns: 1fr; }
            .container { padding: 0 16px; }
        }

/* roulang page: category1 */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-light: #eef1f5;
            --bg-dark: #1a2a3a;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #7a8a9a;
            --text-white: #f0f4f8;
            --border: #d0d8e0;
            --border-light: #e4e8ee;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 18px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.04);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

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

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

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

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        @media screen and (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-nav);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo span {
            color: var(--accent);
        }
        .site-logo:hover {
            color: var(--primary);
            opacity: 0.92;
        }

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

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-tabs a i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .nav-tabs a:hover {
            background: var(--bg-light);
            color: var(--primary);
            border-color: var(--border);
        }
        .nav-tabs a:hover i {
            color: var(--accent);
        }

        .nav-tabs a.active {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.20);
        }
        .nav-tabs a.active i {
            color: var(--accent-light);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 24px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary-dark) !important;
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            margin-left: 10px;
        }
        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232, 168, 56, 0.35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-light);
        }

        @media screen and (max-width: 820px) {
            .nav-tabs {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
                border-radius: 0 0 var(--radius) var(--radius);
                z-index: 99;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-left: 0;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
        }

        @media screen and (max-width: 520px) {
            .site-logo {
                font-size: 1.25rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
            .nav-tabs a {
                font-size: 0.9rem;
                padding: 10px 14px;
            }
        }

        /* ===== Hero (内页简化) ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 60px 0 50px;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(232, 168, 56, 0.12), transparent 60%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 680px;
            margin: 0 auto 20px;
            line-height: 1.8;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(232, 168, 56, 0.20);
            border: 1px solid rgba(232, 168, 56, 0.30);
            color: var(--accent-light);
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        @media screen and (max-width: 768px) {
            .page-hero {
                padding: 44px 0 36px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media screen and (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 64px 0;
        }
        .section-bg-light {
            background: var(--bg-light);
        }
        .section-bg-white {
            background: var(--bg-white);
        }
        .section-bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            margin-bottom: 10px;
        }
        .section-title h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-bg-dark .section-title h2 {
            color: var(--text-white);
        }
        .section-bg-dark .section-title p {
            color: rgba(255, 255, 255, 0.70);
        }

        @media screen and (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
        }
        @media screen and (max-width: 520px) {
            .section-title h2 {
                font-size: 1.35rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }

        /* ===== 步骤 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 30px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            transition: background var(--transition);
        }
        .step-card:hover .step-num {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .step-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .step-card .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        @media screen and (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-card {
                padding: 24px 18px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .guide-card .card-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .guide-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .guide-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-secondary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            align-self: flex-start;
        }
        .guide-card .card-link {
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
            transition: color var(--transition);
        }
        .guide-card .card-link:hover {
            color: var(--accent);
        }
        .guide-card .card-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .guide-card .card-link:hover i {
            transform: translateX(4px);
        }

        @media screen and (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .guide-card {
                padding: 22px 18px;
            }
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 30px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: default;
        }
        .tag-cloud .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.15);
        }
        .tag-cloud .tag i {
            margin-right: 6px;
            font-size: 0.8rem;
            color: var(--accent);
        }
        .tag-cloud .tag:hover i {
            color: var(--accent-light);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            font-family: var(--font-base);
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1rem;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        @media screen and (max-width: 520px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 60px 0;
            text-align: center;
            color: var(--text-white);
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 168, 56, 0.08), transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary-dark) !important;
            border: none;
            transition: all var(--transition);
            text-decoration: none;
        }
        .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.35);
        }
        .cta-btn-outline {
            background: transparent;
            color: var(--text-white) !important;
            border: 2px solid rgba(255, 255, 255, 0.40);
        }
        .cta-btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--accent);
            color: var(--accent-light) !important;
            box-shadow: none;
        }

        @media screen and (max-width: 768px) {
            .cta-section {
                padding: 44px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        @media screen and (max-width: 520px) {
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 0;
            font-size: 0.95rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: var(--text-white);
            margin-bottom: 12px;
            font-size: 1.4rem;
        }
        .footer-brand .site-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.60);
            line-height: 1.8;
            max-width: 320px;
            font-size: 0.9rem;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.60);
            padding: 4px 0;
            transition: color var(--transition);
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        @media screen and (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media screen and (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 16px;
        }
        .mt-2 {
            margin-top: 32px;
        }
        .mb-1 {
            margin-bottom: 16px;
        }
        .mb-2 {
            margin-bottom: 32px;
        }
        .gap-sm {
            gap: 12px;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-x {
            margin: 0;
        }
        .cell {
            padding: 0;
        }
        .button {
            transition: all var(--transition);
        }

        /* ===== 响应式微调 ===== */
        @media screen and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media screen and (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media screen and (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a2a5c;
            --primary-light: #1a4a8a;
            --primary-dark: #061a3a;
            --accent: #f5b342;
            --accent-light: #f8c96a;
            --accent-dark: #d4942e;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-light: #eef1f5;
            --bg-dark: #0a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2c3e50;
            --text-muted: #6b7a8f;
            --text-white: #f0f4f8;
            --border-color: #dce3ed;
            --border-light: #e8edf4;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(10, 42, 92, 0.06);
            --shadow-md: 0 6px 24px rgba(10, 42, 92, 0.10);
            --shadow-lg: 0 16px 48px rgba(10, 42, 92, 0.14);
            --shadow-accent: 0 6px 24px rgba(245, 179, 66, 0.30);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-dark); }
        a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
        button, .button { cursor: pointer; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.25; }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-light);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
        }
        .site-logo i { color: var(--accent); font-size: 1.6rem; }
        .site-logo span { color: var(--accent); font-weight: 700; }
        .site-logo:hover { color: var(--primary); opacity: 0.9; }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-light);
            padding: 4px;
            border-radius: var(--radius-xl);
        }
        .nav-tabs a {
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            background: transparent;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-tabs a i { font-size: 0.85rem; }
        .nav-tabs a:hover { color: var(--primary); background: rgba(10, 42, 92, 0.06); }
        .nav-tabs a.active {
            color: var(--bg-white);
            background: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .nav-tabs a.active:hover { background: var(--primary-light); }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: var(--bg-light); }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb i { font-size: 0.7rem; color: var(--border-color); }
        .breadcrumb .current { color: var(--text-dark); font-weight: 600; }

        /* ===== Article Header ===== */
        .article-header {
            background: var(--bg-white);
            padding: 40px 0 24px;
        }
        .article-header .article-category {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .article-header h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.2;
            max-width: 880px;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            color: var(--text-muted);
            font-size: 0.9rem;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary-light); width: 16px; }
        .article-meta .tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .article-meta .tag {
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: var(--radius-xl);
            font-weight: 500;
        }

        /* ===== Article Body ===== */
        .article-body-wrap {
            background: var(--bg-white);
            padding: 32px 0 48px;
        }
        .article-body {
            max-width: 860px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--text-dark);
        }
        .article-body p { margin-bottom: 1.2em; }
        .article-body ul, .article-body ol {
            margin-bottom: 1.2em;
            padding-left: 1.6em;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body img { margin: 1.6em 0; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 24px;
            margin: 1.6em 0;
            background: var(--bg-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-body a { color: var(--primary-light); text-decoration: underline; }
        .article-body a:hover { color: var(--accent-dark); }
        .article-body code {
            background: var(--bg-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-dark);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i { font-size: 3.6rem; color: var(--border-color); margin-bottom: 20px; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--text-dark); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .button { background: var(--primary); color: #fff; padding: 12px 32px; border-radius: var(--radius-xl); font-weight: 600; }
        .article-not-found .button:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== Article Navigation (prev/next) ===== */
        .article-nav {
            background: var(--bg-white);
            padding: 24px 0 40px;
            border-top: 1px solid var(--border-light);
        }
        .article-nav-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .article-nav-item {
            padding: 20px 24px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .article-nav-item:hover { background: var(--bg-white); border-color: var(--border-color); box-shadow: var(--shadow-sm); }
        .article-nav-item .label {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 6px;
        }
        .article-nav-item .title { font-weight: 700; color: var(--text-dark); font-size: 1rem; line-height: 1.4; }
        .article-nav-item.next { text-align: right; }
        .article-nav-item.next .label { justify-content: flex-end; }

        /* ===== Related Posts ===== */
        .related-section {
            background: var(--bg-light);
            padding: 56px 0;
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 32px;
            text-align: center;
        }
        .related-section h2 i { color: var(--accent); margin-right: 10px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-color); }
        .related-card .card-body { padding: 20px 20px 22px; }
        .related-card .card-cat {
            font-size: 0.7rem;
            font-weight: 700;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card h3 { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
        .related-card h3 a { color: inherit; }
        .related-card h3 a:hover { color: var(--primary-light); }
        .related-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }
        .related-card .card-meta { font-size: 0.75rem; color: var(--text-muted); margin-top: 12px; display: flex; gap: 16px; }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-white);
            padding: 56px 0;
        }
        .faq-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 36px;
            text-align: center;
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-color); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--primary-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--primary);
            padding: 56px 0;
            text-align: center;
            color: var(--text-white);
        }
        .cta-section h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .button-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-section .button {
            padding: 14px 36px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .button-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .cta-section .button-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
        .cta-section .button-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .cta-section .button-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo { color: #fff; font-size: 1.4rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand .site-logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 360px; line-height: 1.6; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.3px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            h1 { font-size: 1.6rem; }
            h2 { font-size: 1.4rem; }
            .nav-tabs { display: none; }
            .nav-tabs.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); padding: 16px; border-radius: 0 0 var(--radius-md) var(--radius-md); box-shadow: var(--shadow-lg); gap: 4px; border-top: 1px solid var(--border-light); }
            .nav-tabs.open a { padding: 12px 20px; border-radius: var(--radius-sm); }
            .nav-toggle { display: block; }
            .article-header h1 { font-size: 1.6rem; }
            .article-meta { gap: 12px 20px; font-size: 0.8rem; }
            .article-body { font-size: 0.95rem; }
            .article-nav-grid { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-section .button-group { flex-direction: column; align-items: center; }
            .breadcrumb-area { padding: 10px 0; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .site-logo { font-size: 1.2rem; }
            .site-logo i { font-size: 1.2rem; }
            .article-header { padding: 24px 0 16px; }
            .article-body-wrap { padding: 20px 0 32px; }
            .faq-question { font-size: 0.9rem; padding: 14px 16px; }
            .faq-answer { padding: 0 16px 14px; }
            .related-card .card-body { padding: 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .gap-1 { gap: 16px; }
        .gap-2 { gap: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }