/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #4A6CF7;
            --color-primary-dark: #3A5BD9;
            --color-primary-light: #7B93FA;
            --color-secondary: #6C5CE7;
            --color-accent: #F59E0B;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-dark: #0F172A;
            --color-text: #1E293B;
            --color-text-secondary: #64748B;
            --color-text-light: #94A3B8;
            --color-border: #E2E8F0;
            --color-border-light: #F1F5F9;
            --color-success: #10B981;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --space-section: 100px;
            --space-section-mobile: 60px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-dark); }
        a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }
        .section-padding { padding: var(--space-section) 0; }
        .section-padding-sm { padding: 60px 0; }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--color-text); }
        .display-1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 800; letter-spacing: -0.02em; }
        .display-2 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 700; letter-spacing: -0.01em; }
        .heading-1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; }
        .heading-2 { font-size: clamp(1.3rem, 2.2vw, 1.75rem); font-weight: 600; }
        .heading-3 { font-size: 1.15rem; font-weight: 600; }
        .text-body { font-size: 1rem; color: var(--color-text-secondary); line-height: 1.8; }
        .text-small { font-size: 0.875rem; color: var(--color-text-light); }
        .text-accent { color: var(--color-accent); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px;
            border-radius: 50px; font-weight: 600; font-size: 0.95rem; line-height: 1;
            transition: var(--transition); border: 2px solid transparent;
            justify-content: center; white-space: nowrap;
        }
        .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn:active { transform: translateY(0); }
        .btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
        .btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; }
        .btn-secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
        .btn-secondary:hover { background: var(--color-primary); color: #fff; }
        .btn-white { background: #fff; color: var(--color-primary); border-color: #fff; }
        .btn-white:hover { background: var(--color-bg-alt); color: var(--color-primary-dark); }
        .btn-accent { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
        .btn-accent:hover { background: #D97706; border-color: #D97706; color: #fff; }
        .btn-lg { padding: 18px 44px; font-size: 1.05rem; }
        .btn-sm { padding: 10px 22px; font-size: 0.85rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; line-height: 1.4;
            background: rgba(74, 108, 247, 0.1); color: var(--color-primary);
        }
        .badge-success { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }
        .badge-accent { background: rgba(245, 158, 11, 0.1); color: var(--color-accent); }
        .badge-secondary { background: rgba(108, 92, 231, 0.1); color: var(--color-secondary); }

        /* ===== Card ===== */
        .card {
            background: var(--color-bg); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--color-border);
            transition: var(--transition); overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .card-body { padding: 28px; }
        .card-image { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
        .card-footer { padding: 16px 28px; border-top: 1px solid var(--color-border-light); background: var(--color-bg-alt); }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.95); backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: 0 1px 4px rgba(0,0,0,0.03);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .site-logo { font-size: 1.4rem; font-weight: 800; color: var(--color-text); letter-spacing: -0.02em; }
        .site-logo span { color: var(--color-primary); }
        .site-logo:hover { color: var(--color-text); }
        .nav-list { display: flex; align-items: center; gap: 8px; }
        .nav-list a {
            padding: 8px 16px; border-radius: 50px; font-weight: 500;
            color: var(--color-text-secondary); font-size: 0.92rem;
            transition: var(--transition); position: relative;
        }
        .nav-list a:hover { color: var(--color-primary); background: rgba(74, 108, 247, 0.06); }
        .nav-list a.active { color: var(--color-primary); background: rgba(74, 108, 247, 0.1); font-weight: 600; }
        .nav-cta { margin-left: 12px; }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .nav-toggle span { width: 24px; height: 2.5px; background: var(--color-text); border-radius: 4px; transition: var(--transition); }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 60%, #334155 100%);
            color: #fff; padding: 120px 0 100px; position: relative; overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(74,108,247,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 20%, rgba(108,92,231,0.1) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero h1 { color: #fff; margin-bottom: 20px; }
        .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.7); max-width: 600px; margin-bottom: 36px; line-height: 1.8; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-badge { display: inline-block; padding: 6px 18px; border-radius: 50px; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.8); font-size: 0.85rem; margin-bottom: 24px; border: 1px solid rgba(255,255,255,0.1); }

        /* ===== Section Titles ===== */
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header .badge { margin-bottom: 16px; }
        .section-header h2 { margin-bottom: 16px; }
        .section-header p { max-width: 600px; margin: 0 auto; color: var(--color-text-secondary); }

        /* ===== Features ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card {
            background: var(--color-bg); border-radius: var(--radius-md);
            padding: 40px 32px; border: 1px solid var(--color-border);
            transition: var(--transition); text-align: center;
        }
        .feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: var(--color-primary-light); }
        .feature-icon {
            width: 64px; height: 64px; border-radius: 16px;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.6rem; color: #fff;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        }
        .feature-card h3 { margin-bottom: 12px; }
        .feature-card p { color: var(--color-text-secondary); font-size: 0.95rem; line-height: 1.7; }

        /* ===== Category Entry ===== */
        .category-card {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: var(--radius-lg); padding: 48px 40px; color: #fff;
            display: flex; align-items: center; justify-content: space-between; gap: 40px;
            transition: var(--transition); cursor: pointer;
        }
        .category-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-4px); }
        .category-card h3 { color: #fff; font-size: 1.6rem; margin-bottom: 12px; }
        .category-card p { color: rgba(255,255,255,0.8); margin-bottom: 0; }
        .category-card .btn { flex-shrink: 0; }

        /* ===== CMS List ===== */
        .cms-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .cms-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--color-border-light); }
        .cms-item:last-child { border-bottom: none; }
        .cms-item-content { flex: 1; min-width: 0; }
        .cms-item-title { font-weight: 600; font-size: 1rem; margin-bottom: 6px; line-height: 1.4; }
        .cms-item-title a { color: var(--color-text); }
        .cms-item-title a:hover { color: var(--color-primary); }
        .cms-item-meta { display: flex; align-items: center; gap: 12px; font-size: 0.82rem; color: var(--color-text-light); margin-top: 8px; }
        .cms-item-meta .badge { font-size: 0.7rem; padding: 2px 10px; }
        .cms-empty { text-align: center; padding: 40px 20px; color: var(--color-text-light); background: var(--color-bg-alt); border-radius: var(--radius-md); }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
        .stat-card { padding: 40px 24px; background: var(--color-bg); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--color-primary); line-height: 1.2; margin-bottom: 8px; }
        .stat-label { color: var(--color-text-secondary); font-size: 0.95rem; }

        /* ===== Process ===== */
        .process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position: relative; }
        .process-step { text-align: center; position: relative; }
        .process-step::after {
            content: ''; position: absolute; top: 36px; left: 60%; width: 80%; height: 2px;
            background: linear-gradient(90deg, var(--color-primary), transparent);
        }
        .process-step:last-child::after { display: none; }
        .step-number {
            width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 20px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; font-weight: 700; color: #fff;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        }
        .process-step h3 { margin-bottom: 10px; }
        .process-step p { color: var(--color-text-secondary); font-size: 0.95rem; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--color-border); padding: 20px 0; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1rem; padding: 4px 0; }
        .faq-question i { color: var(--color-text-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--color-primary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 24px 0 0; color: var(--color-text-secondary); line-height: 1.8; }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 16px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            color: #fff; text-align: center; padding: 80px 0; border-radius: var(--radius-lg);
            margin: 0 24px;
        }
        .cta-section h2 { color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }

        /* ===== Footer ===== */
        .site-footer { background: var(--color-bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 32px; margin-top: 80px; }
        .site-footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 20px; font-weight: 600; }
        .site-footer a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .site-footer a:hover { color: #fff; }
        .site-footer p { font-size: 0.9rem; line-height: 1.7; }
        .footer-brand .site-logo { color: #fff; font-size: 1.2rem; display: inline-block; margin-bottom: 12px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; padding-top: 24px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .cms-grid { grid-template-columns: 1fr; }
            .site-footer .container { grid-template-columns: 1fr 1fr; }
            .process-grid { grid-template-columns: 1fr; gap: 40px; }
            .process-step::after { display: none; }
        }

        @media (max-width: 768px) {
            :root { --space-section: var(--space-section-mobile); }
            .nav-list { display: none; }
            .nav-toggle { display: flex; }
            .nav-list.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); padding: 20px 24px; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-lg); gap: 4px; }
            .nav-list.open a { padding: 12px 16px; width: 100%; }
            .nav-list.open .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-list.open .nav-cta .btn { width: 100%; }
            .hero { padding: 80px 0 60px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; gap: 20px; }
            .category-card { flex-direction: column; text-align: center; padding: 32px 24px; }
            .category-card .btn { width: 100%; }
            .cta-section { margin: 0 16px; padding: 60px 24px; border-radius: var(--radius-md); }
            .site-footer .container { grid-template-columns: 1fr; gap: 32px; }
            .cms-item { flex-direction: column; gap: 12px; }
            .section-header { margin-bottom: 36px; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .site-header .container { height: 64px; }
            .site-logo { font-size: 1.15rem; }
            .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
            .stat-number { font-size: 2rem; }
            .feature-card { padding: 28px 20px; }
            .card-body { padding: 20px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mt-40 { margin-top: 40px; }
        .mb-12 { margin-bottom: 12px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-section-alt: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #ffffff;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-2xl: 64px;
            --spacing-3xl: 96px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--header-height);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
        h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
        h3 { font-size: clamp(1.15rem, 2.2vw, 1.45rem); }
        p { margin-bottom: 1em; color: var(--text-secondary); }
        p:last-child { margin-bottom: 0; }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 2px;
            letter-spacing: -0.3px;
        }
        .site-logo span {
            color: var(--primary);
            background: var(--primary-light);
            padding: 0 6px;
            border-radius: 6px;
            margin-right: 2px;
        }
        .site-logo:hover { color: var(--text-primary); opacity: 0.9; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }
        .nav-list a {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px; left: 0;
            width: 0; height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-list a:hover { color: var(--primary); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--primary); font-weight: 600; }
        .nav-list a.active::after { width: 100%; }
        .nav-cta { margin-left: var(--spacing-sm); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-section-alt); }
        .nav-toggle span {
            display: block;
            width: 26px; height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37,99,235,0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 24px rgba(37,99,235,0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(37,99,235,0.3); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius-md); }
        .btn i { font-size: 0.9em; }

        /* ===== Article Detail ===== */
        .article-hero {
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: var(--text-muted); }
        .article-hero .breadcrumb a:hover { color: var(--primary); }
        .article-hero .breadcrumb i { font-size: 0.7rem; }
        .article-hero .article-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: var(--spacing-md);
        }
        .article-hero h1 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            max-width: 860px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-meta i { margin-right: 6px; }
        .article-meta .meta-item { display: flex; align-items: center; }

        .article-body-wrap {
            padding: var(--spacing-2xl) 0 var(--spacing-3xl);
            background: var(--bg-body);
        }
        .article-body {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl) var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--text-primary);
        }
        .article-body .content p {
            margin-bottom: 1.2em;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }
        .article-body .content ul li { list-style: disc; margin-bottom: 0.4em; }
        .article-body .content ol li { list-style: decimal; margin-bottom: 0.4em; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 1em 1.4em;
            margin: 1.4em 0;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content code {
            background: var(--bg-section-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }
        .article-body .content pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 1.2em 1.6em;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.4em 0;
        }
        .article-body .content a { text-decoration: underline; text-underline-offset: 2px; }

        .article-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing-lg);
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 100px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: var(--spacing-md);
        }
        .article-share span { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Not Found ===== */
        .not-found-wrap {
            padding: var(--spacing-3xl) 0;
            text-align: center;
            min-height: 50vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .not-found-wrap i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            opacity: 0.5;
        }
        .not-found-wrap h2 { margin-bottom: var(--spacing-md); }
        .not-found-wrap p { color: var(--text-muted); margin-bottom: var(--spacing-lg); max-width: 400px; }

        /* ===== Related Section ===== */
        .related-section {
            padding: var(--spacing-2xl) 0 var(--spacing-3xl);
            background: var(--bg-section-alt);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .related-section .section-title h2 { font-weight: 700; }
        .related-section .section-title p { color: var(--text-muted); margin-top: 8px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .related-card .card-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 10px;
            border-radius: 100px;
            display: inline-block;
            margin-bottom: var(--spacing-sm);
        }
        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }
        .related-card h3 a { color: var(--text-primary); }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ===== CTA Section ===== */
        .article-cta {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-card);
        }
        .article-cta .cta-box {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .article-cta .cta-box h2 { color: #fff; font-weight: 700; margin-bottom: var(--spacing-sm); }
        .article-cta .cta-box p { color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto var(--spacing-lg); }
        .article-cta .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
        }
        .article-cta .btn-outline-light:hover { background: #fff; color: var(--primary); border-color: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-2xl) 0 0;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: var(--spacing-xl);
        }
        .site-footer .site-logo { color: #fff; margin-bottom: var(--spacing-sm); }
        .site-footer .site-logo span { background: rgba(255,255,255,0.15); color: #fff; }
        .site-footer p { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.7; }
        .site-footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: #fff; padding-left: 4px; }
        .footer-links i { color: rgba(255,255,255,0.3); margin-right: 8px; width: 18px; text-align: center; }
        .footer-bottom {
            margin-top: var(--spacing-xl);
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: var(--spacing-lg) 0;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255,255,255,0.3);
            text-align: center;
        }
        .footer-bottom a { color: rgba(255,255,255,0.3); }
        .footer-bottom a:hover { color: rgba(255,255,255,0.6); }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .container { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
        }
        @media screen and (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(16px);
                flex-direction: column;
                padding: var(--spacing-lg) var(--spacing-md);
                gap: var(--spacing-sm);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                align-items: stretch;
            }
            .nav-list.open { transform: translateY(0); opacity: 1; }
            .nav-list a { padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-list a:hover { background: var(--bg-section-alt); }
            .nav-list a::after { display: none; }
            .nav-list a.active { background: var(--primary-light); }
            .nav-cta { margin-left: 0; margin-top: var(--spacing-xs); }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .nav-toggle { display: flex; }

            .article-body { padding: var(--spacing-lg) var(--spacing-md); }
            .article-meta { gap: var(--spacing-md); }

            .related-grid { grid-template-columns: 1fr; }
            .site-footer .container { grid-template-columns: 1fr; text-align: center; }
            .footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
            .footer-links li { margin-bottom: 0; }

            .article-cta .cta-box { padding: var(--spacing-xl) var(--spacing-lg); }
        }
        @media screen and (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-body { padding: var(--spacing-md); }
            .article-meta { font-size: 0.82rem; }
            .article-share a { width: 34px; height: 34px; }
            .related-card { padding: var(--spacing-md); }
            .cta-box .btn { width: 100%; justify-content: center; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mb-lg { margin-bottom: var(--spacing-lg); }
        .mb-xl { margin-bottom: var(--spacing-xl); }
        .mt-lg { margin-top: var(--spacing-lg); }
        .gap-sm { gap: var(--spacing-sm); }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a6cf0;
            --primary-light: #4a8ff5;
            --primary-dark: #0f4fa8;
            --primary-bg: #eaf1fe;
            --secondary: #f5a623;
            --secondary-light: #f7c35a;
            --success: #22c55e;
            --bg: #ffffff;
            --bg-alt: #f6f8fc;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #5a6a7e;
            --text-muted: #8a9aaa;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 18px;
            --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1280px;
            --header-h: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 标题层级 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-subtitle.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        @media screen and (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 28px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container);
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 2px;
            text-decoration: none;
        }
        .site-logo span {
            color: var(--primary);
        }
        .site-logo:hover {
            color: var(--text);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-alt);
            color: var(--text);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-cta {
            padding: 0 !important;
            background: transparent !important;
        }
        .nav-cta .btn {
            margin-left: 8px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            margin: 4px 0;
            transition: transform var(--transition), opacity var(--transition);
        }
        @media screen and (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.3s ease;
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1.05rem;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-cta {
                margin-top: 8px;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            text-decoration: none;
            font-family: inherit;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(26, 108, 240, 0.30);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: #d48e1c;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.30);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.875rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
        }
        .btn-white:hover {
            background: var(--bg-alt);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }

        /* ===== Hero 内页横幅 ===== */
        .page-hero {
            padding: 120px 0 64px;
            background: linear-gradient(135deg, var(--primary-bg) 0%, #f0f5ff 100%);
            border-bottom: 1px solid var(--border-light);
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
            color: var(--text);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .page-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-hero .breadcrumb i {
            font-size: 0.7rem;
            opacity: 0.5;
        }
        @media screen and (max-width: 768px) {
            .page-hero {
                padding: 100px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }

        /* ===== 板块间距 ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-block-alt {
            background: var(--bg-alt);
        }
        @media screen and (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            padding: 28px;
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card .card-icon.blue {
            background: var(--primary);
        }
        .card .card-icon.green {
            background: var(--success);
        }
        .card .card-icon.orange {
            background: var(--secondary);
        }
        .card .card-icon.purple {
            background: #8b5cf6;
        }
        .card .card-icon.teal {
            background: #14b8a6;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }
        .card .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
            margin-top: 16px;
            align-self: flex-start;
        }
        .card .card-footer-link {
            margin-top: 18px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        .card .card-footer-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .card:hover .card-footer-link i {
            transform: translateX(4px);
        }

        /* ===== 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;
        }
        @media screen and (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 指南文章列表 ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .guide-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .guide-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .guide-item .guide-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .guide-item .guide-content {
            flex: 1;
        }
        .guide-item .guide-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .guide-item .guide-content p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .guide-item .guide-content .guide-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .guide-item .guide-content .guide-meta i {
            margin-right: 4px;
        }
        @media screen and (max-width: 600px) {
            .guide-item {
                flex-direction: column;
                padding: 20px;
            }
            .guide-item .guide-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            cursor: pointer;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            gap: 12px;
        }
        .faq-item .faq-q i {
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding-top 0.3s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-block p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-block .btn-white {
            font-size: 1.05rem;
            padding: 14px 36px;
        }
        @media screen and (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 1rem;
            }
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-green {
            background: #e6f7ee;
            color: #0d9f4e;
        }
        .badge-orange {
            background: #fef3e2;
            color: #c47d0e;
        }
        .badge-purple {
            background: #f0eaff;
            color: #7c3aed;
        }

        /* ===== 特色图文区块 ===== */
        .feature-row {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .feature-row .feature-text {
            flex: 1;
        }
        .feature-row .feature-visual {
            flex: 1;
            background: var(--primary-bg);
            border-radius: var(--radius);
            padding: 40px;
            min-height: 260px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--primary);
        }
        @media screen and (max-width: 900px) {
            .feature-row {
                flex-direction: column;
                gap: 28px;
            }
            .feature-row .feature-visual {
                width: 100%;
                padding: 28px;
                min-height: 180px;
                font-size: 2.4rem;
            }
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 6px;
        }
        @media screen and (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            border-radius: 2px;
            background: var(--primary);
            margin: 16px 0 24px;
        }
        .divider.center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
            font-size: 0.92rem;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .site-footer .site-logo {
            color: #fff;
        }
        .site-footer .site-logo span {
            color: var(--primary-light);
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            margin-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media screen and (max-width: 900px) {
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media screen and (max-width: 600px) {
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ===== 响应式增强 ===== */
        @media screen and (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .card {
                padding: 20px;
            }
            .guide-item {
                padding: 16px 18px;
            }
            .cta-block h2 {
                font-size: 1.25rem;
            }
        }

        /* ===== 搜索框 (Foundation 覆盖) ===== */
        .input-group-field:focus,
        .search-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 108, 240, 0.15);
        }
        .search-wrapper {
            display: flex;
            max-width: 520px;
            margin: 0 auto 32px;
            gap: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            background: #fff;
        }
        .search-wrapper input {
            flex: 1;
            border: none;
            padding: 14px 18px;
            font-size: 0.95rem;
            background: transparent;
            outline: none;
            font-family: inherit;
            color: var(--text);
        }
        .search-wrapper input::placeholder {
            color: var(--text-muted);
        }
        .search-wrapper button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 24px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }
        .search-wrapper button:hover {
            background: var(--primary-dark);
        }
        @media screen and (max-width: 500px) {
            .search-wrapper {
                flex-direction: column;
                border-radius: var(--radius-sm);
            }
            .search-wrapper button {
                justify-content: center;
                padding: 12px;
            }
        }

        /* ===== Foundation 覆盖 ===== */
        .button.primary {
            background: var(--primary);
        }
        .button.primary:hover {
            background: var(--primary-dark);
        }
        .tabs-title>a[aria-selected='true'] {
            color: var(--primary);
            border-bottom: 3px solid var(--primary);
        }