/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a20;
            --accent: #c0392b;
            --bg-light: #f8f9fb;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border: #e2e6ef;
            --border-light: #f0f2f7;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(26, 58, 92, 0.08);
            --shadow-hover: 0 12px 40px rgba(26, 58, 92, 0.16);
            --shadow-nav: 0 2px 16px rgba(26, 58, 92, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-top-height: 36px;
            --nav-height: 72px;
            --space-section: 80px;
            --space-block: 40px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        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: 2.8rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--space-section) 0; }

        /* ===== Button System ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px;
            font-size: 1rem; font-weight: 600; line-height: 1.4;
            border: none; cursor: pointer; transition: all var(--transition);
            text-align: center; white-space: nowrap;
        }
        .btn:focus-visible { outline: 2px solid var(--secondary); outline-offset: 3px; }
        .btn-primary {
            background: var(--secondary); color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(232, 168, 56, 0.35);
        }
        .btn-primary:hover, .btn-primary:active {
            background: var(--secondary-dark); color: var(--primary-dark);
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232, 168, 56, 0.45);
        }
        .btn-outline {
            background: transparent; color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.5);
            backdrop-filter: blur(4px);
        }
        .btn-outline:hover, .btn-outline:active {
            background: rgba(255,255,255,0.12); border-color: var(--secondary); color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary); color: var(--text-white);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.25);
        }
        .btn-dark:hover, .btn-dark:active {
            background: var(--primary-light); transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 58, 92, 0.35);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.875rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.125rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em;
            background: rgba(232, 168, 56, 0.12); color: var(--secondary-dark);
        }
        .badge-primary { background: var(--primary); color: var(--text-white); }
        .badge-light { background: rgba(255,255,255,0.15); color: var(--text-white); }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card); border-radius: var(--radius);
            box-shadow: var(--shadow); transition: all var(--transition);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
        .card-text { font-size: 0.925rem; color: var(--text-secondary); line-height: 1.6; }
        .card-tag { margin-bottom: 12px; }

        /* ===== Header Top Bar ===== */
        .header-top {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            font-size: 0.8rem; height: var(--header-top-height);
            display: flex; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .header-top .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
        .header-top a { color: rgba(255,255,255,0.7); font-size: 0.8rem; }
        .header-top a:hover { color: var(--secondary); }
        .header-top .domain-text { letter-spacing: 0.02em; }
        .header-top .top-right { display: flex; gap: 16px; align-items: center; }
        .header-top .top-right i { margin-right: 4px; }

        /* ===== Main Navigation ===== */
        .main-nav {
            background: var(--bg-card); border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav); position: sticky; top: 0; z-index: 100;
            height: var(--nav-height); display: flex; align-items: center;
        }
        .main-nav .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
        .nav-brand { display: flex; align-items: center; gap: 8px; }
        .nav-brand .logo-text {
            font-size: 1.35rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.01em; line-height: 1.2;
        }
        .nav-brand .logo-text span { color: var(--secondary); }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px; border-radius: 50px; font-size: 0.925rem; font-weight: 500;
            color: var(--text-secondary); transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover, .nav-links a.active {
            background: rgba(26, 58, 92, 0.06); color: var(--primary);
        }
        .nav-links a.active { font-weight: 700; color: var(--primary); }
        .nav-cta .btn { padding: 8px 22px; font-size: 0.875rem; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; padding: 4px 8px; }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 78vh; display: flex; align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.5; transform: scale(1.02);
        }
        .hero-overlay {
            position: absolute; inset: 0; z-index: 1;
            background: linear-gradient(135deg, rgba(15,26,46,0.88) 0%, rgba(26,58,92,0.72) 60%, rgba(15,26,46,0.88) 100%);
        }
        .hero .container { position: relative; z-index: 2; width: 100%; padding: 60px 24px; }
        .hero-content { max-width: 780px; }
        .hero-badge { margin-bottom: 20px; display: inline-block; }
        .hero h1 {
            font-size: 3.2rem; font-weight: 900; color: var(--text-white);
            line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 20px;
        }
        .hero h1 .highlight { color: var(--secondary); }
        .hero p {
            font-size: 1.2rem; color: rgba(255,255,255,0.8);
            max-width: 640px; line-height: 1.7; margin-bottom: 32px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

        /* ===== Stats Strip ===== */
        .stats-strip {
            background: var(--bg-card); border-bottom: 1px solid var(--border);
            padding: 28px 0;
        }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; text-align: center; }
        .stat-item { padding: 8px; }
        .stat-number { font-size: 2.2rem; font-weight: 900; color: var(--primary); line-height: 1.2; }
        .stat-number .unit { font-size: 1rem; font-weight: 600; color: var(--text-light); margin-left: 4px; }
        .stat-label { font-size: 0.875rem; color: var(--text-secondary); margin-top: 4px; }

        /* ===== Section Titles ===== */
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
        .section-title p { max-width: 600px; margin: 0 auto; color: var(--text-secondary); font-size: 1.05rem; }
        .section-title .badge { margin-bottom: 12px; }

        /* ===== Services / Features ===== */
        .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .service-card {
            background: var(--bg-card); border-radius: var(--radius);
            padding: 36px 28px; border: 1px solid var(--border);
            box-shadow: var(--shadow); transition: all var(--transition);
            text-align: center;
        }
        .service-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .service-icon {
            width: 64px; height: 64px; border-radius: 16px;
            background: rgba(26, 58, 92, 0.06); display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.8rem; color: var(--primary);
            transition: background var(--transition);
        }
        .service-card:hover .service-icon { background: var(--primary); color: var(--text-white); }
        .service-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
        .service-card p { font-size: 0.925rem; margin-bottom: 0; }

        /* ===== CMS Latest Posts ===== */
        .posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .post-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); transition: all var(--transition); }
        .post-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .post-card .card-img { aspect-ratio: 16/9; }
        .post-card .card-body { padding: 20px 24px 24px; }
        .post-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-light); margin-bottom: 10px; }
        .post-meta .post-cat { background: rgba(26,58,92,0.06); padding: 2px 12px; border-radius: 50px; color: var(--primary-light); font-weight: 500; }
        .post-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .post-card h3 a { color: var(--text-primary); }
        .post-card h3 a:hover { color: var(--primary-light); }
        .post-card .card-text { font-size: 0.875rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .empty-msg { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 1.05rem; grid-column: 1 / -1; }

        /* ===== Process / Steps ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
        .step-card {
            background: var(--bg-card); border-radius: var(--radius);
            padding: 32px 24px; border: 1px solid var(--border);
            text-align: center; position: relative;
            box-shadow: var(--shadow); transition: all var(--transition);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .step-number {
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: var(--text-white);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.3rem; font-weight: 800; margin: 0 auto 16px;
        }
        .step-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .step-card p { font-size: 0.875rem; margin-bottom: 0; }

        /* ===== Testimonials ===== */
        .testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .testimonial-card {
            background: var(--bg-card); border-radius: var(--radius);
            padding: 32px 28px; border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .testimonial-stars { color: var(--secondary); font-size: 0.95rem; margin-bottom: 12px; letter-spacing: 2px; }
        .testimonial-text { font-size: 0.95rem; color: var(--text-secondary); font-style: italic; line-height: 1.7; margin-bottom: 20px; }
        .testimonial-author { display: flex; align-items: center; gap: 12px; }
        .testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--border); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--text-light); }
        .testimonial-name { font-weight: 700; font-size: 0.9rem; color: var(--text-primary); }
        .testimonial-role { font-size: 0.8rem; color: var(--text-light); }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius);
            border: 1px solid var(--border); overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow); }
        .faq-question {
            padding: 20px 28px; font-size: 1rem; font-weight: 600;
            color: var(--text-primary); cursor: pointer;
            display: flex; justify-content: space-between; align-items: center;
            background: none; border: none; width: 100%; text-align: left;
            font-family: var(--font-sans); transition: color var(--transition);
        }
        .faq-question:focus-visible { outline: 2px solid var(--secondary); outline-offset: -2px; }
        .faq-question i { transition: transform var(--transition); color: var(--text-light); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            padding: 0 28px 20px; font-size: 0.925rem; color: var(--text-secondary); line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark); position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12; z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; padding: 80px 24px; }
        .cta-section h2 { font-size: 2.4rem; font-weight: 800; color: var(--text-white); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            padding: 48px 0 28px; border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo-text { font-size: 1.2rem; font-weight: 800; color: var(--text-white); margin-bottom: 12px; display: block; }
        .footer-brand .logo-text span { color: var(--secondary); }
        .footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.55); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { font-size: 0.9rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.04em; }
        .footer-col a { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.55); padding: 4px 0; transition: color var(--transition); }
        .footer-col a:hover { color: var(--secondary); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
        .footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.4); margin-bottom: 0; }
        .footer-bottom .footer-links { display: flex; gap: 20px; }
        .footer-bottom .footer-links a { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
        .footer-bottom .footer-links a:hover { color: var(--secondary); }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed; bottom: 32px; right: 32px; z-index: 99;
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: var(--text-white);
            border: none; font-size: 1.2rem; cursor: pointer;
            box-shadow: 0 4px 16px rgba(26,58,92,0.3);
            transition: all var(--transition); opacity: 0; visibility: hidden; transform: translateY(20px);
        }
        .back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-top:hover { background: var(--primary-light); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(26,58,92,0.4); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            .hero h1 { font-size: 2.6rem; }
            .services-grid, .posts-grid, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --space-section: 48px; --nav-height: 64px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .hero { min-height: 60vh; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-actions { flex-direction: column; align-items: flex-start; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-number { font-size: 1.6rem; }
            .services-grid, .posts-grid, .testimonials-grid { grid-template-columns: 1fr; gap: 20px; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .section-title h2 { font-size: 1.6rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            /* Nav toggle */
            .nav-toggle { display: block; }
            .nav-links {
                position: fixed; top: var(--nav-height); left: 0; right: 0;
                background: var(--bg-card); border-bottom: 2px solid var(--border);
                flex-direction: column; padding: 16px 24px; gap: 4px;
                transform: translateY(-120%); opacity: 0; transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
                box-shadow: 0 12px 32px rgba(0,0,0,0.08); z-index: 99;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; }
            .nav-links a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .nav-cta { display: none; }
            .header-top .top-right span { display: none; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero p { font-size: 0.925rem; }
            .process-grid { grid-template-columns: 1fr; }
            .stat-number { font-size: 1.4rem; }
            .btn { padding: 10px 24px; font-size: 0.875rem; }
            .back-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 1rem; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 0.5rem; }
        .mb-2 { margin-bottom: 0.5rem; }
        .gap-2 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #d4302f;
            --primary-dark: #b01e1d;
            --primary-light: #fbe5e5;
            --secondary: #1a2a4a;
            --secondary-light: #2c4070;
            --accent: #f5c542;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section-alt: #f0f2f8;
            --text-dark: #1a1a2e;
            --text-body: #3d3d56;
            --text-light: #7a7a94;
            --text-white: #f0f0f8;
            --border-light: #e6e8f0;
            --border-focus: #d4302f;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 12px 40px rgba(212, 48, 47, 0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 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-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            padding-top: var(--header-h);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        .button,
        .btn {
            cursor: pointer;
            font-family: var(--font-main);
            transition: all var(--transition);
        }
        button:focus-visible,
        .btn:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            height: var(--header-h);
        }

        /* top bar */
        .top-bar {
            background: var(--secondary);
            color: var(--text-white);
            font-size: 13px;
            padding: 6px 0;
            display: none;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar a {
            color: var(--text-white);
            opacity: 0.85;
        }
        .top-bar a:hover {
            opacity: 1;
        }
        @media screen and (min-width: 768px) {
            .top-bar {
                display: block;
            }
        }

        /* main nav */
        .main-nav {
            display: flex;
            align-items: center;
            height: var(--header-h);
            background: var(--bg-white);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-brand {
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo-text span {
            color: var(--primary);
            font-weight: 700;
        }
        .logo-text:hover {
            color: var(--text-dark);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-dark);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: var(--bg-section-alt);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links>a {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links>a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links>a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-links>a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta {
            margin-left: 12px;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(212, 48, 47, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(212, 48, 47, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(212, 48, 47, 0.2);
        }

        /* mobile nav */
        @media screen and (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                border-top: 1px solid var(--border-light);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links>a {
                font-size: 16px;
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links>a.active::after {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                text-align: center;
            }
        }
        @media screen and (min-width: 768px) and (max-width: 1023px) {
            .nav-links>a {
                padding: 6px 12px;
                font-size: 14px;
            }
            .nav-cta {
                margin-left: 6px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            background: var(--bg-section-alt);
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-area .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 10px;
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb-area a {
            color: var(--text-light);
        }
        .breadcrumb-area a:hover {
            color: var(--primary);
        }
        .breadcrumb-area span {
            color: var(--text-body);
            font-weight: 500;
        }
        .breadcrumb-area .sep {
            color: var(--text-light);
            font-size: 12px;
        }

        /* ===== Article Header ===== */
        .article-header {
            padding: 40px 0 24px;
        }
        .article-header h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 14px;
            color: var(--text-light);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            color: var(--primary);
            font-size: 14px;
        }
        .article-meta .category-badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 13px;
        }
        @media screen and (max-width: 640px) {
            .article-header h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 0 0 60px;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body .content-body {
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content-body p {
            margin-bottom: 20px;
        }
        .article-body .content-body h2,
        .article-body .content-body h3 {
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .article-body .content-body h2 {
            font-size: 26px;
        }
        .article-body .content-body h3 {
            font-size: 20px;
        }
        .article-body .content-body ul,
        .article-body .content-body ol {
            margin: 16px 0 20px;
            padding-left: 24px;
            list-style: disc;
        }
        .article-body .content-body ol {
            list-style: decimal;
        }
        .article-body .content-body li {
            margin-bottom: 8px;
        }
        .article-body .content-body img {
            margin: 28px auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-body .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content-body a:hover {
            color: var(--primary-dark);
        }

        /* article not found */
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found .not-found-icon {
            font-size: 64px;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-not-found h3 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .article-not-found p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found .btn {
            display: inline-block;
            padding: 12px 32px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--primary);
        }
        .sidebar-card .side-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 14px;
            color: var(--text-body);
            transition: all var(--transition);
        }
        .sidebar-card .side-list a:last-child {
            border-bottom: none;
        }
        .sidebar-card .side-list a:hover {
            color: var(--primary);
            padding-left: 6px;
        }
        .sidebar-card .side-list a .side-num {
            background: var(--primary-light);
            color: var(--primary);
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar-card .side-list a:hover .side-num {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-cta {
            background: var(--secondary);
            color: var(--text-white);
            border: none;
        }
        .sidebar-cta h4 {
            color: var(--text-white);
        }
        .sidebar-cta h4 i {
            color: var(--accent);
        }
        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn {
            background: var(--accent);
            color: var(--text-dark);
            border: none;
            font-weight: 700;
            width: 100%;
            text-align: center;
            padding: 12px;
            border-radius: var(--radius-md);
        }
        .sidebar-cta .btn:hover {
            background: #e2b334;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        @media screen and (max-width: 1023px) {
            .article-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-body {
                padding: 28px 24px;
            }
        }
        @media screen and (max-width: 640px) {
            .article-body {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-body .content-body {
                font-size: 15px;
            }
            .article-body .content-body h2 {
                font-size: 22px;
            }
            .article-body .content-body h3 {
                font-size: 18px;
            }
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-section-alt);
            padding: 60px 0;
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 32px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .rc-img {
            height: 180px;
            background: var(--bg-section-alt);
            position: relative;
            overflow: hidden;
        }
        .related-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .rc-body {
            padding: 20px 20px 24px;
        }
        .related-card .rc-body h5 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .related-card .rc-body h5 a {
            color: var(--text-dark);
        }
        .related-card .rc-body h5 a:hover {
            color: var(--primary);
        }
        .related-card .rc-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .related-card .rc-body .rc-meta {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        @media screen and (max-width: 1023px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 22px;
            }
        }

        /* ===== CTA Section ===== */
        .article-cta {
            background: var(--bg-dark);
            padding: 60px 0;
            text-align: center;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-cta .container {
            position: relative;
            z-index: 1;
        }
        .article-cta h3 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .btn {
            padding: 14px 40px;
            font-size: 16px;
            background: var(--accent);
            color: var(--text-dark);
            border: none;
            border-radius: var(--radius-md);
            font-weight: 700;
            box-shadow: 0 6px 20px rgba(245, 197, 66, 0.3);
        }
        .article-cta .btn:hover {
            background: #e2b334;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(245, 197, 66, 0.35);
        }
        @media screen and (max-width: 640px) {
            .article-cta h3 {
                font-size: 24px;
            }
            .article-cta p {
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 52px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            color: var(--text-white);
            font-size: 22px;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand .logo-text span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 340px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            opacity: 0.6;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        @media screen and (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media screen and (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                gap: 12px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mb-12 {
            margin-bottom: 12px;
        }
        .gap-8 {
            gap: 8px;
        }

        /* ===== Responsive fine-tune ===== */
        @media screen and (max-width: 480px) {
            :root {
                --header-h: 64px;
            }
            .logo-text {
                font-size: 20px;
            }
            .article-header {
                padding: 24px 0 16px;
            }
            .article-main {
                padding: 0 0 40px;
            }
            .related-section {
                padding: 40px 0;
            }
            .article-cta {
                padding: 40px 0;
            }
        }
        @media screen and (min-width: 1024px) and (max-width: 1280px) {
            .container {
                padding: 0 32px;
            }
        }

/* roulang page: category1 */
/* ============================
               1. 设计变量
               ============================ */
        :root {
            --color-primary: #0b4b8a;
            --color-primary-light: #1a7bc4;
            --color-primary-dark: #072a4f;
            --color-accent: #e06b1e;
            --color-accent-light: #f58a3c;
            --color-bg: #f7f9fc;
            --color-bg-alt: #eef2f7;
            --color-bg-dark: #0d1b2a;
            --color-text: #1b2838;
            --color-text-light: #4a5a6e;
            --color-text-muted: #7a8a9e;
            --color-border: #d6dee8;
            --color-white: #ffffff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --header-top-height: 38px;
            --nav-height: 68px;
        }

        /* ============================
           2. 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: 1.65;
            color: var(--color-text);
            background: var(--color-bg);
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding-left: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-text);
        }
        p {
            color: var(--color-text-light);
            margin-bottom: 1rem;
        }

        /* ============================
           3. 容器
           ============================ */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media screen and (min-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }

        /* ============================
           4. 顶部信息条
           ============================ */
        .top-bar {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8rem;
            line-height: var(--header-top-height);
            height: var(--header-top-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar .top-left {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .top-bar .top-left i {
            margin-right: 6px;
            font-size: 0.7rem;
            color: var(--color-accent-light);
        }
        .top-bar .top-left span {
            color: rgba(255, 255, 255, 0.7);
        }
        .top-bar .top-right a {
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            padding: 0 12px;
            transition: color var(--transition);
        }
        .top-bar .top-right a:hover {
            color: var(--color-accent-light);
        }
        .top-bar .top-right a i {
            margin-right: 4px;
        }
        @media screen and (max-width: 640px) {
            .top-bar .top-left span:not(.show-mobile) {
                display: none;
            }
            .top-bar .top-right a {
                font-size: 0.75rem;
                padding: 0 6px;
            }
        }

        /* ============================
           5. 导航
           ============================ */
        .main-nav {
            background: var(--color-white);
            height: var(--nav-height);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow var(--transition);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: -0.3px;
        }
        .nav-brand .logo-text span {
            color: var(--color-accent);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            position: relative;
            padding: 8px 18px;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            font-size: 0.95rem;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(11, 75, 138, 0.05);
        }
        .nav-links a.active {
            color: var(--color-primary);
            background: rgba(11, 75, 138, 0.08);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px 3px 0 0;
        }
        .nav-links .nav-cta {
            margin-left: 10px;
        }
        .nav-links .nav-cta .btn {
            padding: 8px 20px;
            font-size: 0.9rem;
            border-radius: var(--radius-md);
        }
        .nav-links .nav-cta .btn i {
            margin-right: 6px;
        }

        /* 移动端导航 */
        @media screen and (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--header-top-height);
                left: 0;
                width: 100%;
                background: var(--color-white);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 10px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.35s ease;
                z-index: 99;
                max-height: calc(100vh - var(--header-top-height) - 20px);
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(11, 75, 138, 0.1);
                border-left: 4px solid var(--color-accent);
            }
            .nav-links .nav-cta {
                margin-left: 0;
                width: 100%;
                margin-top: 8px;
            }
            .nav-links .nav-cta .btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
        }
        @media screen and (max-width: 640px) {
            .main-nav {
                height: 58px;
            }
            .nav-brand .logo-text {
                font-size: 1.15rem;
            }
            .nav-links {
                top: calc(var(--header-top-height) + 58px);
                padding: 16px 16px 24px;
            }
        }

        /* ============================
           6. 按钮
           ============================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
            text-decoration: none;
            line-height: 1.4;
            gap: 8px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            color: var(--color-white);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }
        .btn-accent:hover {
            background: var(--color-accent-light);
            color: var(--color-white);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }
        .btn:focus-visible {
            outline: 3px solid var(--color-accent-light);
            outline-offset: 2px;
        }

        /* ============================
           7. 板块通用
           ============================ */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: var(--color-white);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.4px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 640px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .text-center {
            text-align: center;
        }
        @media screen and (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ============================
           8. Hero
           ============================ */
        .hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            color: var(--color-white);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(125deg, rgba(7, 42, 79, 0.85) 30%, rgba(11, 75, 138, 0.55) 70%, rgba(224, 107, 30, 0.25) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 20px;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            color: var(--color-white);
            letter-spacing: -0.6px;
            max-width: 720px;
        }
        .hero h1 span {
            color: var(--color-accent-light);
        }
        .hero p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero .hero-actions .btn {
            font-size: 1rem;
            padding: 14px 32px;
        }
        .hero .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        @media screen and (max-width: 768px) {
            .hero {
                min-height: 360px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero .hero-actions .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }
        @media screen and (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ============================
           9. 卡片
           ============================ */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: box-shadow var(--transition), transform var(--transition);
            border: 1px solid var(--color-border);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card .card-icon {
            font-size: 2.2rem;
            color: var(--color-primary-light);
            margin-bottom: 16px;
        }
        .card .card-icon.accent {
            color: var(--color-accent);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            margin-bottom: 0;
        }
        .card .card-img {
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            margin: -28px -24px 20px -24px;
            overflow: hidden;
            height: 180px;
            object-fit: cover;
            width: calc(100% + 48px);
            max-width: none;
        }
        .card-feature {
            border-top: 4px solid var(--color-primary-light);
        }
        @media screen and (max-width: 640px) {
            .card {
                padding: 20px 16px;
            }
            .card .card-img {
                height: 140px;
                margin: -20px -16px 16px -16px;
                width: calc(100% + 32px);
            }
        }

        /* ============================
           10. 网格（Foundation 覆盖）
           ============================ */
        .grid-x {
            display: flex;
            flex-wrap: wrap;
        }
        .grid-x>.cell {
            padding: 0 12px;
        }
        .grid-margin-x {
            margin: 0 -12px;
        }
        .grid-margin-x>.cell {
            padding: 0 12px;
        }
        @media screen and (max-width: 640px) {
            .grid-x>.cell {
                padding: 0 8px;
            }
            .grid-margin-x {
                margin: 0 -8px;
            }
            .grid-margin-x>.cell {
                padding: 0 8px;
            }
        }

        /* ============================
           11. 徽章 / 标签
           ============================ */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(11, 75, 138, 0.1);
            color: var(--color-primary);
            border: 1px solid rgba(11, 75, 138, 0.15);
        }
        .badge-accent {
            background: rgba(224, 107, 30, 0.12);
            color: var(--color-accent);
            border-color: rgba(224, 107, 30, 0.2);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }

        /* ============================
           12. 服务流程
           ============================ */
        .steps {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: step-counter;
        }
        .step-item {
            flex: 1 1 200px;
            text-align: center;
            padding: 24px 16px;
            position: relative;
            counter-increment: step-counter;
        }
        .step-item::before {
            content: counter(step-counter);
            display: block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-white);
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(11, 75, 138, 0.25);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 0;
        }
        .step-item+.step-item::after {
            content: '→';
            position: absolute;
            left: -12px;
            top: 40px;
            font-size: 1.6rem;
            color: var(--color-border);
            font-weight: 300;
        }
        @media screen and (max-width: 768px) {
            .step-item {
                flex: 1 1 45%;
            }
            .step-item+.step-item::after {
                display: none;
            }
        }
        @media screen and (max-width: 520px) {
            .step-item {
                flex: 1 1 100%;
                padding: 16px 8px;
            }
        }

        /* ============================
           13. FAQ
           ============================ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--color-white);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question i {
            color: var(--color-primary-light);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        @media screen and (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
        }

        /* ============================
           14. CTA
           ============================ */
        .cta-block {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 70%, var(--color-primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: var(--color-white);
            box-shadow: var(--shadow-lg);
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 14px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-block .btn {
            font-size: 1.1rem;
            padding: 16px 44px;
        }
        @media screen and (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }
        @media screen and (max-width: 520px) {
            .cta-block .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ============================
           15. 场景卡片
           ============================ */
        .scene-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border-left: 5px solid var(--color-primary-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .scene-card:nth-child(2) {
            border-left-color: var(--color-accent);
        }
        .scene-card:nth-child(3) {
            border-left-color: #2b8a6e;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .scene-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 0;
        }
        .scene-card .scene-icon {
            font-size: 1.8rem;
            margin-bottom: 12px;
            color: var(--color-primary-light);
        }
        .scene-card:nth-child(2) .scene-icon {
            color: var(--color-accent);
        }
        .scene-card:nth-child(3) .scene-icon {
            color: #2b8a6e;
        }

        /* ============================
           16. 统计数字
           ============================ */
        .stat-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px 60px;
        }
        .stat-item {
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }
        .section-dark .stat-item .stat-num {
            color: var(--color-accent-light);
        }
        .section-dark .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ============================
           17. 页脚
           ============================ */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px 32px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-white);
        }
        .site-footer .footer-brand .logo-text span {
            color: var(--color-accent-light);
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            margin-top: 12px;
            max-width: 320px;
            line-height: 1.7;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
            transition: color var(--transition);
            font-size: 0.88rem;
        }
        .site-footer .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom p {
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 18px;
        }
        .site-footer .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
            transition: color var(--transition);
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--color-accent-light);
        }
        @media screen and (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
        }

        /* ============================
           18. 响应式微调
           ============================ */
        @media screen and (max-width: 640px) {
            .hero .hero-tag {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .stat-grid {
                gap: 24px 32px;
            }
        }
        @media screen and (min-width: 1024px) {
            .hero h1 {
                font-size: 3.2rem;
            }
            .section-title {
                font-size: 2.2rem;
            }
        }

        /* 辅助类 */
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .rounded-full {
            border-radius: 9999px;
        }