/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5090;
            --primary-dark: #0f2440;
            --accent: #d4a843;
            --accent-light: #e8c97a;
            --accent-dark: #b8892a;
            --bg-body: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-muted: #eef1f5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-white: #f0f2f5;
            --border: #dce1e8;
            --border-light: #e8ecf1;
            --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(0,0,0,0.05);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
        h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
        h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0;
            height: var(--header-h);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-nav); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            font-size: 1.35rem; font-weight: 800;
            color: var(--primary); letter-spacing: 0.5px;
            display: flex; align-items: center; gap: 10px;
            transition: opacity var(--transition);
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .logo:hover { opacity: 0.85; }
        .nav-list { display: flex; align-items: center; gap: 36px; }
        .nav-list a {
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            padding: 6px 0; position: relative; transition: color var(--transition);
        }
        .nav-list a::after {
            content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
            height: 2px; background: var(--accent); border-radius: 2px;
            transform: scaleX(0); transform-origin: right center;
            transition: transform var(--transition);
        }
        .nav-list a:hover { color: var(--primary); }
        .nav-list a:hover::after { transform: scaleX(1); transform-origin: left center; }
        .nav-list a.active { color: var(--primary); font-weight: 600; }
        .nav-list a.active::after { transform: scaleX(1); }
        .nav-cta {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--accent); color: #fff !important; padding: 8px 22px;
            border-radius: 50px; font-weight: 600; font-size: 0.9rem;
            transition: all var(--transition);
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(212,168,67,0.35); }
        .nav-toggle { display: none; font-size: 1.6rem; color: var(--primary); padding: 4px; }

        /* ===== Hero 分屏 ===== */
        .hero-split {
            display: flex; align-items: center; min-height: 100vh;
            padding-top: var(--header-h); background: var(--bg-body);
            overflow: hidden;
        }
        .hero-split .hero-content {
            flex: 1 1 50%; padding: 80px 60px 80px 24px;
            max-width: 640px; margin-left: auto;
        }
        .hero-split .hero-visual {
            flex: 1 1 50%; min-height: 70vh;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-radius: var(--radius-lg) 0 0 var(--radius-lg);
            position: relative;
        }
        .hero-visual .overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(30,58,95,0.20) 0%, rgba(0,0,0,0.05) 100%);
            border-radius: inherit;
        }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(212,168,67,0.12); color: var(--accent-dark);
            padding: 6px 18px; border-radius: 50px; font-size: 0.85rem; font-weight: 600;
            margin-bottom: 24px; border: 1px solid rgba(212,168,67,0.25);
        }
        .hero-content h1 { margin-bottom: 20px; color: var(--primary); }
        .hero-content .subtitle {
            font-size: 1.15rem; color: var(--text-secondary);
            max-width: 520px; margin-bottom: 32px; line-height: 1.8;
        }
        .hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--primary); color: #fff; padding: 14px 36px;
            border-radius: 50px; font-weight: 600; font-size: 1rem;
            transition: all var(--transition); border: none;
        }
        .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(30,58,95,0.30); }
        .btn-outline {
            display: inline-flex; align-items: center; gap: 10px;
            background: transparent; color: var(--primary); padding: 14px 36px;
            border-radius: 50px; font-weight: 600; font-size: 1rem;
            border: 2px solid var(--border); transition: all var(--transition);
        }
        .btn-outline:hover { border-color: var(--primary); background: rgba(30,58,95,0.04); transform: translateY(-2px); }
        .hero-stats {
            display: flex; gap: 40px; margin-top: 44px; padding-top: 32px;
            border-top: 1px solid var(--border-light);
        }
        .hero-stats .stat-item { text-align: left; }
        .hero-stats .stat-num { font-size: 1.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .hero-stats .stat-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-dark h2, .section-dark .section-sub { color: #fff; }
        .section-dark .section-sub { color: rgba(255,255,255,0.7); }
        .section-header { text-align: center; max-width: 700px; margin: 0 auto 52px; }
        .section-header h2 { margin-bottom: 14px; }
        .section-sub { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; }
        .section-header .section-sub { max-width: 580px; margin: 0 auto; }

        /* ===== 核心优势卡片 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .card {
            background: var(--bg-card); border-radius: var(--radius);
            padding: 36px 28px; border: 1px solid var(--border-light);
            transition: all var(--transition); box-shadow: var(--shadow);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
        .card-icon {
            width: 56px; height: 56px; border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; margin-bottom: 20px;
            background: rgba(30,58,95,0.06); color: var(--primary);
        }
        .card h3 { margin-bottom: 10px; }
        .card p { font-size: 0.95rem; margin-bottom: 0; }

        /* ===== 图文交替 ===== */
        .alt-row { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; }
        .alt-row:last-child { margin-bottom: 0; }
        .alt-row.reverse { flex-direction: row-reverse; }
        .alt-text { flex: 1 1 50%; }
        .alt-text h3 { margin-bottom: 16px; font-size: 1.6rem; }
        .alt-text p { font-size: 1rem; max-width: 520px; }
        .alt-tag {
            display: inline-block; background: rgba(212,168,67,0.10);
            color: var(--accent-dark); padding: 4px 14px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; margin-bottom: 12px;
            border: 1px solid rgba(212,168,67,0.20);
        }
        .alt-visual { flex: 1 1 50%; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-hover); }
        .alt-visual img { width: 100%; height: 360px; object-fit: cover; }

        /* ===== CMS 资讯列表 ===== */
        .grid-3-cms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .cms-card {
            background: var(--bg-card); border-radius: var(--radius);
            overflow: hidden; border: 1px solid var(--border-light);
            transition: all var(--transition); box-shadow: var(--shadow);
            display: flex; flex-direction: column;
        }
        .cms-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .cms-card .card-img { width: 100%; height: 200px; object-fit: cover; }
        .cms-card .card-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .cms-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.4; }
        .cms-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); flex: 1; margin-bottom: 16px; }
        .cms-card .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-muted); }
        .cms-card .card-meta .cat { background: var(--bg-muted); padding: 2px 12px; border-radius: 50px; color: var(--text-secondary); }
        .cms-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.05rem; }

        /* ===== 流程步骤 ===== */
        .steps { display: flex; gap: 30px; counter-reset: step; justify-content: center; flex-wrap: wrap; }
        .step-item { flex: 1 1 200px; max-width: 260px; text-align: center; position: relative; }
        .step-item::before {
            counter-increment: step; content: counter(step);
            display: block; width: 48px; height: 48px; line-height: 48px;
            margin: 0 auto 18px; border-radius: 50%;
            background: var(--primary); color: #fff; font-size: 1.2rem; font-weight: 700;
        }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .step-item p { font-size: 0.9rem; margin-bottom: 0; }
        .step-item:not(:last-child)::after {
            content: '\f054'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
            position: absolute; right: -22px; top: 10px; color: var(--accent);
            font-size: 1rem;
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--border-light); padding: 18px 0;
        }
        .faq-q {
            display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1.05rem; color: var(--text-primary);
            cursor: pointer; padding: 4px 0; transition: color var(--transition);
        }
        .faq-q:hover { color: var(--primary); }
        .faq-q i { transition: transform var(--transition); color: var(--accent); font-size: 0.9rem; }
        .faq-q.open i { transform: rotate(180deg); }
        .faq-a {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7;
        }
        .faq-a.open { max-height: 300px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 24px; text-align: center; border-radius: var(--radius-lg);
            margin: 0 24px; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08; border-radius: inherit;
        }
        .cta-section h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 16px; position: relative; }
        .cta-section p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; position: relative; }
        .cta-section .btn-primary { background: var(--accent); color: var(--primary-dark); }
        .cta-section .btn-primary:hover { background: var(--accent-light); box-shadow: 0 10px 30px rgba(212,168,67,0.35); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 60px 24px 30px; margin-top: 80px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; max-width: var(--max-width); margin: 0 auto; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; max-width: 320px; color: rgba(255,255,255,0.55); }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; }
        .footer-col a { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.55); padding: 4px 0; transition: color var(--transition); }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            max-width: var(--max-width); margin: 40px auto 0; padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.85rem; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 12px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-split .hero-content { padding: 60px 40px 60px 24px; }
            .alt-row, .alt-row.reverse { flex-direction: column; gap: 40px; }
            .alt-text p { max-width: 100%; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .nav-list { display: none; }
            .nav-toggle { display: block; }
            .nav-list.open {
                display: flex; flex-direction: column; position: fixed; top: var(--header-h);
                left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
                padding: 24px 30px; gap: 20px; border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-nav); align-items: flex-start;
            }
            .hero-split { flex-direction: column; }
            .hero-split .hero-content { padding: 48px 24px 40px; max-width: 100%; margin: 0; }
            .hero-split .hero-visual { flex: none; width: 100%; min-height: 40vh; border-radius: 0; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .grid-3, .grid-3-cms { grid-template-columns: 1fr; }
            .steps { flex-direction: column; align-items: center; }
            .step-item { max-width: 100%; }
            .step-item::after { display: none; }
            .section { padding: 56px 0; }
            .cta-section { margin: 0 16px; padding: 56px 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .hero-split .hero-content { padding: 32px 16px 28px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
            .hero-stats .stat-num { font-size: 1.4rem; }
            .card { padding: 24px 18px; }
            .alt-visual img { height: 220px; }
            .cms-card .card-img { height: 160px; }
            .section-header { margin-bottom: 32px; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-32 { margin-top: 32px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-white: #ffffff;
            --bg-light: #f7f9fc;
            --bg-dark: #0f1a2e;
            --bg-section-alt: #eef3f8;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-light: #6a7a8a;
            --text-white: #f0f4f8;
            --border-light: #e0e6ed;
            --border-accent: #e8a838;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-accent: 0 4px 16px rgba(232,168,56,0.3);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 64px;
            --spacing-xl: 96px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
        }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-body); }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* ===== Site Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .logo:hover { color: var(--primary-dark); }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-dark);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-light); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: var(--bg-light); }
        .nav-list a.active {
            color: var(--primary-dark);
            background: rgba(26,58,92,0.08);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-accent);
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232,168,56,0.4);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-list {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm);
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .nav-list a.active::after { display: none; }
            .nav-list a.nav-cta { text-align: center; margin-top: 4px; }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% { transform: scale(1.05); }
            100% { transform: scale(1.15); }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.92) 0%, rgba(26,58,92,0.7) 50%, rgba(15,26,46,0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: var(--spacing-xl) var(--spacing-sm);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        .hero-text h1 {
            color: var(--text-white);
            font-size: clamp(2.4rem, 5.5vw, 3.6rem);
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
        }
        .hero-text h1 span {
            color: var(--accent);
            display: inline-block;
        }
        .hero-text p {
            color: rgba(255,255,255,0.75);
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
            max-width: 560px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-md);
        }
        .hero-badge {
            background: rgba(232,168,56,0.15);
            border: 1px solid rgba(232,168,56,0.3);
            color: var(--accent-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232,168,56,0.45);
            color: var(--primary-dark);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-white);
            font-weight: 500;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.25);
            transition: all var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232,168,56,0.08);
        }
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            max-width: 540px;
            aspect-ratio: 16/10;
            object-fit: cover;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            border: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat {
            text-align: center;
            color: var(--text-white);
        }
        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            display: block;
        }
        .hero-stat .label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
        }
        @media (max-width: 1024px) {
            .hero-content { grid-template-columns: 1fr; gap: var(--spacing-md); text-align: center; }
            .hero-text p { margin: 0 auto var(--spacing-md); }
            .hero-badges { justify-content: center; }
            .hero-actions { justify-content: center; }
            .hero-stats { max-width: 480px; margin-left: auto; margin-right: auto; }
            .hero-section { min-height: auto; }
        }
        @media (max-width: 520px) {
            .hero-content { padding: var(--spacing-lg) var(--spacing-sm); }
            .hero-stats { grid-template-columns: 1fr; gap: var(--spacing-xs); }
            .hero-stat { padding: 6px 0; }
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-lg) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p { color: var(--text-white); }
        .section-dark p { color: rgba(255,255,255,0.75); }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent);
            margin-bottom: var(--spacing-xs);
        }
        .section-title {
            margin-bottom: var(--spacing-sm);
        }
        .section-desc {
            max-width: 640px;
            margin-bottom: var(--spacing-md);
            font-size: 1.1rem;
        }
        .section-desc.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-title.centered {
            text-align: center;
        }
        .section.centered .section-desc {
            text-align: center;
        }
        .text-center { text-align: center; }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            font-size: 1.4rem;
            margin-bottom: var(--spacing-sm);
        }
        .card h3 {
            margin-bottom: var(--spacing-xs);
            font-size: 1.2rem;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: var(--spacing-sm);
            font-weight: 600;
            color: var(--primary-light);
            font-size: 0.9rem;
        }
        .card-link i { font-size: 0.8rem; transition: transform var(--transition); }
        .card-link:hover i { transform: translateX(4px); }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-card::before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            top: var(--spacing-sm);
            right: var(--spacing-sm);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50%;
        }
        .step-card .step-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(26,58,92,0.08);
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }
        .step-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
        .step-card p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== Features / Two-column ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        .feature-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .feature-item {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            padding: var(--spacing-sm);
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.6);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-item:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
        }
        .feature-item .fi-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            font-size: 1.1rem;
        }
        .feature-item .fi-text h4 { font-size: 1rem; margin-bottom: 2px; }
        .feature-item .fi-text p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }
        @media (max-width: 768px) {
            .feature-row { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .feature-image { order: -1; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) var(--spacing-md);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            background: var(--bg-white);
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { transition: transform var(--transition); color: var(--accent); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 var(--spacing-md);
            background: var(--bg-white);
        }
        .faq-answer p {
            padding: 0 0 var(--spacing-sm);
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: var(--spacing-xs) var(--spacing-md) var(--spacing-sm);
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            border: 1px solid rgba(232,168,56,0.2);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-box * { position: relative; z-index: 1; }
        .cta-box h2 { color: var(--text-white); margin-bottom: var(--spacing-xs); }
        .cta-box p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto var(--spacing-md); }
        .cta-box .btn-primary { font-size: 1.1rem; padding: 16px 40px; }

        /* ===== Tags / Badges ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .tag:hover { border-color: var(--accent); color: var(--accent); background: rgba(232,168,56,0.06); }
        .tag-accent { background: rgba(232,168,56,0.12); color: var(--accent-dark); border-color: rgba(232,168,56,0.3); }

        /* ===== Content Cards with Image ===== */
        .content-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: var(--spacing-md);
        }
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .content-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .content-card .cc-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .content-card .cc-body {
            padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
        }
        .content-card .cc-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
        .content-card .cc-body p { font-size: 0.92rem; color: var(--text-light); margin-bottom: var(--spacing-xs); }
        .content-card .cc-meta {
            display: flex;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: var(--spacing-xs);
        }

        /* ===== Numbers / Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: var(--spacing-md);
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .stat-item p { margin-bottom: 0; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-lg) 0 var(--spacing-sm);
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: var(--spacing-xs); }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-bottom: 0; max-width: 320px; }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            max-width: 1200px;
            margin: var(--spacing-lg) auto 0;
            padding: var(--spacing-sm) var(--spacing-sm) 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Responsive Utilities ===== */
        @media (max-width: 768px) {
            .section { padding: var(--spacing-md) 0; }
            .card-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .content-card-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .hero-text h1 { font-size: 1.8rem; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
            .hero-actions { flex-direction: column; }
        }

        /* ===== Divider ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin-bottom: var(--spacing-sm);
        }
        .divider.centered { margin-left: auto; margin-right: auto; }

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

        /* ===== Smooth animations ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp 0.6s ease forwards;
        }
        @keyframes fadeUp {
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-up-delay-1 { animation-delay: 0.1s; }
        .fade-up-delay-2 { animation-delay: 0.2s; }
        .fade-up-delay-3 { animation-delay: 0.3s; }
        .fade-up-delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --accent: #e8a838;
            --accent-hover: #d4942f;
            --accent-light: #f5d78e;
            --bg: #ffffff;
            --bg-alt: #f5f6fa;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --content-width: 800px;
            --header-height: 72px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-base);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            padding-top: var(--header-height);
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
        }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text); }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
        li { margin-bottom: 0.4rem; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .content-container {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary) !important;
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-alt);
            color: var(--accent);
        }
        .nav-list a.active {
            color: var(--accent);
            background: rgba(232,168,56,0.1);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 8px;
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(232,168,56,0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-alt); }

        /* ===== 文章 Banner ===== */
        .article-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.7);
        }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb span { color: var(--accent); }
        .article-hero .breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            max-width: 800px;
            line-height: 1.25;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { color: var(--accent); font-size: 0.85rem; }
        .article-meta .category-tag {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== 文章正文 ===== */
        .article-body {
            padding: 60px 0 40px;
            background: var(--bg);
        }
        .article-body .content-container {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
        }
        .article-body .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content-body h2,
        .article-body .content-body h3,
        .article-body .content-body h4 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        .article-body .content-body p {
            margin-bottom: 1.2rem;
        }
        .article-body .content-body img {
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.5rem 0;
            background: var(--bg-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content-body ul,
        .article-body .content-body ol {
            margin: 1rem 0 1.2rem 1.8rem;
        }
        .article-body .content-body li {
            margin-bottom: 0.5rem;
        }
        .article-body .content-body a {
            color: var(--accent);
            border-bottom: 1px solid transparent;
        }
        .article-body .content-body a:hover {
            border-bottom-color: var(--accent);
        }
        .article-body .content-body code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-body .content-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-body .content-not-found i {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-body .content-not-found h3 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .article-body .content-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-body .content-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-body .content-not-found .btn-back:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232,168,56,0.35);
        }

        /* ===== 文章底部信息 ===== */
        .article-footer-meta {
            padding: 40px 0 60px;
            background: var(--bg);
            border-top: 1px solid var(--border-light);
        }
        .article-footer-meta .content-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-meta .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-meta .tags .tag {
            background: var(--bg-alt);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .article-footer-meta .tags .tag:hover {
            background: var(--accent);
            color: #fff;
        }
        .article-footer-meta .share {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .article-footer-meta .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-footer-meta .share a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-alt);
        }
        .related-section .section-title h2 {
            font-size: 1.8rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 22px 24px 26px;
        }
        .related-card .card-body h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
            transition: var(--transition);
        }
        .related-card:hover .card-body h4 { color: var(--accent); }
        .related-card .card-body p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-tag {
            display: inline-block;
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            background: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.25);
            color: var(--primary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .logo {
            color: #fff !important;
            margin-bottom: 16px;
            font-size: 1.3rem;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            padding: 5px 0;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 24px 24px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 40px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom span:last-child {
            font-family: monospace;
            letter-spacing: 0.3px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-hero h1 { font-size: 2.2rem; }
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 2px solid var(--border);
                align-items: stretch;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-list a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .nav-list a.active::after { display: none; }
            .nav-toggle { display: block; }

            .article-hero { padding: 70px 0 50px; min-height: 280px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-body .content-container { padding: 28px 24px; }
            .article-body .content-body { font-size: 1rem; }

            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .section { padding: 50px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .article-footer-meta .content-container { flex-direction: column; align-items: flex-start; }
        }

        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-meta { flex-direction: column; gap: 8px; }
            .article-body .content-container { padding: 20px 16px; border-radius: var(--radius-sm); }
            .related-card .card-img { height: 160px; }
            .cta-section .cta-btn { padding: 14px 28px; font-size: 1rem; }
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
            .content-container { padding: 0 16px; }
        }

        /* ===== 辅助 ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }