/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0D2137;
            --primary-light: #1A3A5C;
            --secondary: #D62828;
            --secondary-hover: #B71C1C;
            --accent: #F77F00;
            --accent-light: #FFB347;
            --bg-light: #F8F9FA;
            --bg-dark: #0A1628;
            --text-dark: #1A1A2E;
            --text-body: #333333;
            --text-muted: #6C757D;
            --text-light: #FFFFFF;
            --border-color: #E5E7EB;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-top-bg: #0A1628;
            --nav-bg: #FFFFFF;
            --footer-bg: #0D2137;
            --footer-text: #B0BEC5;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section-padding { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-subtitle { text-align: center; color: var(--text-muted); max-width: 680px; margin: 0 auto 48px; font-size: 1.1rem; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 32px; border-radius: 50px;
            font-size: 1rem; font-weight: 600; line-height: 1.2;
            border: none; cursor: pointer; transition: var(--transition);
            text-decoration: none; white-space: nowrap;
        }
        .btn-primary { background: var(--secondary); color: #fff; }
        .btn-primary:hover, .btn-primary:focus { background: var(--secondary-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(214,40,40,0.35); }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.7); }
        .btn-outline:hover, .btn-outline:focus { background: rgba(255,255,255,0.12); color: #fff; border-color: #fff; transform: translateY(-2px); }
        .btn-accent { background: var(--accent); color: #fff; }
        .btn-accent:hover, .btn-accent:focus { background: #E06900; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(247,127,0,0.35); }
        .btn-sm { padding: 10px 22px; font-size: 0.9rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 6px 16px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
            background: rgba(214,40,40,0.10); color: var(--secondary);
        }
        .badge-light { background: rgba(255,255,255,0.18); color: #fff; }

        /* ===== Cards ===== */
        .card {
            background: #fff; border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); height: 100%;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .card-image { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--text-dark); }
        .card-text { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--text-muted); margin-top: 12px; }

        /* ===== Header Top Bar ===== */
        .header-top {
            background: var(--header-top-bg); color: rgba(255,255,255,0.8);
            font-size: 0.85rem; padding: 8px 0;
        }
        .header-top .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
        .header-top a { color: rgba(255,255,255,0.8); }
        .header-top a:hover { color: #fff; }
        .header-top .top-left { display: flex; align-items: center; gap: 16px; }
        .header-top .top-right { display: flex; align-items: center; gap: 16px; }

        /* ===== Main Navigation ===== */
        .main-nav {
            background: var(--nav-bg); box-shadow: 0 2px 12px rgba(0,0,0,0.06);
            position: sticky; top: 0; z-index: 1000;
        }
        .main-nav .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .nav-brand { display: flex; align-items: center; gap: 8px; }
        .nav-brand .logo-text {
            font-size: 1.5rem; font-weight: 800; color: var(--primary);
            letter-spacing: 0.5px; white-space: nowrap;
        }
        .nav-brand .logo-text span { color: var(--secondary); }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu a {
            padding: 8px 18px; border-radius: 8px;
            font-size: 0.95rem; font-weight: 600; color: var(--text-body);
            transition: var(--transition); white-space: nowrap;
        }
        .nav-menu a:hover, .nav-menu a:focus { background: rgba(13,33,55,0.06); color: var(--primary); }
        .nav-menu a.active { background: var(--primary); color: #fff; }
        .nav-cta .btn { padding: 10px 24px; font-size: 0.9rem; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; padding: 8px; }

        /* ===== Hero Section ===== */
        .hero {
            position: relative; min-height: 75vh;
            display: flex; align-items: center; justify-content: center;
            background: linear-gradient(135deg, rgba(13,33,55,0.88) 0%, rgba(10,22,40,0.92) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            color: #fff; text-align: center; overflow: hidden;
        }
        .hero-content { position: relative; z-index: 2; max-width: 860px; padding: 40px 24px; }
        .hero-badge { margin-bottom: 20px; }
        .hero h1 { color: #fff; font-size: clamp(2.2rem, 5.5vw, 3.6rem); margin-bottom: 20px; letter-spacing: 0.5px; }
        .hero p { font-size: clamp(1rem, 2.2vw, 1.25rem); color: rgba(255,255,255,0.85); margin-bottom: 32px; line-height: 1.7; max-width: 680px; margin-left: auto; margin-right: auto; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .hero-wave { position: absolute; bottom: -2px; left: 0; width: 100%; line-height: 0; z-index: 2; }

        /* ===== Featured Services ===== */
        .services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .service-card { text-align: center; padding: 40px 28px; }
        .service-card .icon-wrap { width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: #fff; background: var(--primary); }
        .service-card:nth-child(2) .icon-wrap { background: var(--secondary); }
        .service-card:nth-child(3) .icon-wrap { background: var(--accent); }
        .service-card h3 { margin-bottom: 10px; }
        .service-card p { color: var(--text-muted); font-size: 0.95rem; }

        /* ===== About / Brand Story ===== */
        .about-section { background: #fff; }
        .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .about-image { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); }
        .about-image img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
        .about-content .badge { margin-bottom: 12px; }
        .about-content h2 { margin-bottom: 16px; }
        .about-content p { color: var(--text-muted); margin-bottom: 12px; }
        .about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
        .stat-item { text-align: center; padding: 20px 12px; background: var(--bg-light); border-radius: var(--radius-sm); }
        .stat-item .num { font-size: 1.8rem; font-weight: 800; color: var(--primary); }
        .stat-item .num span { color: var(--secondary); }
        .stat-item .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

        /* ===== Events / Activities ===== */
        .events-section { background: var(--bg-light); }
        .events-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
        .event-card { position: relative; }
        .event-card .card-image { aspect-ratio: 16/9; }
        .event-card .card-body { position: relative; }
        .event-tag { position: absolute; top: 16px; left: 16px; background: var(--secondary); color: #fff; padding: 6px 16px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }

        /* ===== Latest News (CMS) ===== */
        .news-section { background: #fff; }
        .news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
        .news-card .card-image { aspect-ratio: 16/10; }
        .news-card .card-body { padding: 20px; }
        .news-card .card-title { font-size: 1.05rem; margin-bottom: 8px; }
        .news-card .card-text { font-size: 0.9rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty { text-align: center; padding: 60px 24px; color: var(--text-muted); font-size: 1.1rem; background: var(--bg-light); border-radius: var(--radius-md); }

        /* ===== Trust / Stats Banner ===== */
        .trust-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff; text-align: center;
        }
        .trust-section .section-title { color: #fff; }
        .trust-section .section-subtitle { color: rgba(255,255,255,0.75); }
        .trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; margin-top: 16px; }
        .trust-item { padding: 24px 16px; }
        .trust-item .num { font-size: 2.6rem; font-weight: 800; color: var(--accent); }
        .trust-item .label { font-size: 1rem; color: rgba(255,255,255,0.8); margin-top: 8px; }

        /* ===== Process / Steps ===== */
        .process-section { background: var(--bg-light); }
        .process-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; position: relative; }
        .process-step { text-align: center; padding: 32px 20px; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; }
        .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step .step-num { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 800; }
        .process-step:nth-child(2) .step-num { background: var(--secondary); }
        .process-step:nth-child(3) .step-num { background: var(--accent); }
        .process-step:nth-child(4) .step-num { background: var(--primary-light); }
        .process-step h4 { margin-bottom: 8px; }
        .process-step p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-section { background: #fff; }
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border-color); padding: 20px 0; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-size: 1.05rem; font-weight: 600; color: var(--text-dark); padding: 4px 0; transition: var(--transition); }
        .faq-question:hover { color: var(--secondary); }
        .faq-question .icon { font-size: 1.2rem; transition: var(--transition); color: var(--text-muted); }
        .faq-question.open .icon { transform: rotate(180deg); color: var(--secondary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; padding: 0 16px 0 0; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        .faq-answer.open { max-height: 300px; padding-top: 14px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #B71C1C 100%);
            color: #fff; text-align: center; padding: 80px 0;
        }
        .cta-section h2 { color: #fff; font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
        .cta-section .btn { background: #fff; color: var(--secondary); }
        .cta-section .btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.25); }

        /* ===== Footer ===== */
        .site-footer { background: var(--footer-bg); color: var(--footer-text); padding: 60px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .footer-brand .logo-text { color: #fff; font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; display: block; }
        .footer-brand .logo-text span { color: var(--secondary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: var(--footer-text); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { padding: 20px 0; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a { width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; color: var(--footer-text); transition: var(--transition); }
        .footer-social a:hover { background: var(--secondary); border-color: var(--secondary); color: #fff; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .about-image { order: -1; }
        }

        @media (max-width: 768px) {
            .section-padding { padding: 56px 0; }
            .container { padding: 0 20px; }
            .header-top .container { flex-direction: column; text-align: center; }
            .header-top .top-left, .header-top .top-right { justify-content: center; flex-wrap: wrap; }
            .main-nav .container { height: 64px; }
            .nav-menu { display: none; position: absolute; top: 64px; left: 0; width: 100%; background: #fff; flex-direction: column; padding: 16px 24px; box-shadow: 0 12px 32px rgba(0,0,0,0.10); border-radius: 0 0 var(--radius-md) var(--radius-md); }
            .nav-menu.open { display: flex; }
            .nav-menu a { width: 100%; padding: 12px 16px; }
            .nav-cta { margin-left: auto; }
            .nav-toggle { display: block; }
            .hero { min-height: 65vh; }
            .hero h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); }
            .services-grid { grid-template-columns: 1fr; }
            .events-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr 1fr; }
            .trust-grid { grid-template-columns: 1fr 1fr; }
            .about-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
            .stat-item { padding: 14px 8px; }
            .stat-item .num { font-size: 1.4rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .section-padding { padding: 40px 0; }
            .hero { min-height: 58vh; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
            .process-grid { grid-template-columns: 1fr; }
            .trust-grid { grid-template-columns: 1fr; }
            .about-stats { grid-template-columns: repeat(3, 1fr); }
            .stat-item .num { font-size: 1.2rem; }
            .nav-cta .btn { padding: 8px 16px; font-size: 0.8rem; }
            .nav-brand .logo-text { font-size: 1.2rem; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, .btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
        .skip-link { position: absolute; top: -100px; left: 16px; background: var(--primary); color: #fff; padding: 12px 24px; border-radius: 0 0 8px 8px; z-index: 10000; transition: top 0.3s; }
        .skip-link:focus { top: 0; }

/* roulang page: article */
/* ========== Design Variables ========== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --accent-light: #f8c78a;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-hover: 0 12px 36px rgba(230,57,70,0.18);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.30s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 76px;
            --topbar-height: 40px;
        }

        /* ========== Reset / Base ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: calc(var(--header-height) + var(--topbar-height));
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary-dark); text-decoration: none; }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: var(--radius-sm); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2.0rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ========== Top Bar ========== */
        .top-bar-wrap {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1001;
            background: var(--secondary); color: var(--text-white); font-size: 0.85rem;
            height: var(--topbar-height); line-height: var(--topbar-height);
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .top-bar-wrap .container { display: flex; justify-content: space-between; align-items: center; height: 100%; }
        .top-bar-left span { opacity: 0.85; }
        .top-bar-left i { margin-right: 6px; color: var(--accent-light); }
        .top-bar-right a { color: var(--text-white); opacity: 0.85; margin-left: 18px; transition: var(--transition); }
        .top-bar-right a:hover { opacity: 1; color: var(--accent-light); }
        .top-bar-right i { margin-right: 4px; }

        /* ========== Main Navigation ========== */
        .main-nav {
            position: fixed; top: var(--topbar-height); left: 0; width: 100%; z-index: 1000;
            background: rgba(255,255,255,0.97); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light); height: var(--header-height);
            transition: var(--transition);
        }
        .main-nav .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .nav-brand { flex-shrink: 0; }
        .logo-text {
            font-size: 1.55rem; font-weight: 800; color: var(--text-primary);
            letter-spacing: -0.5px; display: inline-flex; align-items: center;
        }
        .logo-text span { color: var(--primary); margin: 0 2px; }
        .logo-text:hover { color: var(--primary); }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu a {
            padding: 8px 18px; border-radius: var(--radius-sm); font-size: 0.95rem;
            font-weight: 500; color: var(--text-secondary); transition: var(--transition);
            position: relative;
        }
        .nav-menu a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-menu a.active { color: var(--primary); background: rgba(230,57,70,0.10); font-weight: 600; }
        .nav-menu a.active::after {
            content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--primary); border-radius: 3px;
        }
        .nav-cta .btn { padding: 8px 22px; font-size: 0.9rem; border-radius: var(--radius-xl); }
        .nav-cta .btn i { margin-right: 6px; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: var(--text-primary); cursor: pointer; padding: 6px 10px; border-radius: var(--radius-sm); transition: var(--transition); }
        .nav-toggle:hover { background: rgba(0,0,0,0.04); }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 14px 32px; border-radius: var(--radius-md); font-weight: 600;
            font-size: 1rem; border: none; cursor: pointer; transition: var(--transition);
            line-height: 1.2; text-align: center; position: relative; overflow: hidden;
        }
        .btn:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        .btn-primary { background: var(--primary); color: var(--text-white); }
        .btn-primary:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
        .btn-primary:active { transform: translateY(0); }
        .btn-secondary { background: var(--secondary); color: var(--text-white); }
        .btn-secondary:hover { background: var(--secondary-light); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }
        .btn-white { background: var(--text-white); color: var(--primary); }
        .btn-white:hover { background: var(--bg-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-sm { padding: 10px 22px; font-size: 0.88rem; border-radius: var(--radius-sm); }
        .btn-lg { padding: 18px 42px; font-size: 1.1rem; border-radius: var(--radius-lg); }

        /* ========== Hero Banner (Article Page) ========== */
        .article-hero {
            position: relative; padding: 100px 0 80px; overflow: hidden;
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            min-height: 320px; display: flex; align-items: center;
        }
        .article-hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover; background-position: center; opacity: 0.20;
            filter: saturate(0.5);
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero h1 {
            color: var(--text-white); font-size: 2.6rem; max-width: 860px;
            text-shadow: 0 4px 24px rgba(0,0,0,0.30); margin-bottom: 16px;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; gap: 20px; align-items: center;
            color: rgba(255,255,255,0.80); font-size: 0.95rem; margin-top: 8px;
        }
        .article-meta i { margin-right: 6px; color: var(--accent-light); }
        .article-meta span { display: inline-flex; align-items: center; }
        .article-meta .badge {
            background: var(--primary); color: #fff; padding: 4px 14px;
            border-radius: var(--radius-xl); font-size: 0.80rem; font-weight: 600;
        }

        /* ========== Article Content ========== */
        .article-section { padding: 60px 0 80px; }
        .article-wrapper {
            display: grid; grid-template-columns: 1fr 320px; gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 48px 52px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-main .content-body {
            font-size: 1.05rem; line-height: 1.9; color: var(--text-primary);
        }
        .article-main .content-body p { margin-bottom: 1.4rem; }
        .article-main .content-body h2, .article-main .content-body h3 { margin-top: 2rem; margin-bottom: 0.8rem; }
        .article-main .content-body img { border-radius: var(--radius-md); margin: 1.6rem 0; box-shadow: var(--shadow-sm); }
        .article-main .content-body ul, .article-main .content-body ol { padding-left: 1.8rem; margin-bottom: 1.4rem; list-style: disc; color: var(--text-secondary); }
        .article-main .content-body ol { list-style: decimal; }
        .article-main .content-body li { margin-bottom: 0.4rem; }
        .article-main .content-body blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px; margin: 1.6rem 0;
            background: rgba(230,57,70,0.04); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic; color: var(--text-secondary);
        }
        .article-not-found {
            text-align: center; padding: 80px 20px; background: var(--bg-card);
            border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
        }
        .article-not-found i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; }
        .article-not-found h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .article-not-found p { color: var(--text-light); margin-bottom: 24px; }
        .article-not-found .btn { margin-top: 8px; }

        /* ========== Sidebar ========== */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 28px 24px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light); display: flex; align-items: center; gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-card ul li { margin-bottom: 10px; }
        .sidebar-card ul li a {
            color: var(--text-secondary); font-size: 0.95rem;
            display: flex; align-items: center; gap: 10px; transition: var(--transition);
        }
        .sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-card ul li a i { color: var(--accent); font-size: 0.8rem; }
        .sidebar-cta { text-align: center; }
        .sidebar-cta p { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-secondary); }
        .sidebar-cta .btn { width: 100%; }

        /* ========== Related Section ========== */
        .related-section { padding: 40px 0 60px; background: var(--bg-light); }
        .related-section h2 { text-align: center; margin-bottom: 40px; }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            overflow: hidden; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card-body { padding: 20px 22px 24px; }
        .related-card-body h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .related-card-body h4 a { color: var(--text-primary); }
        .related-card-body h4 a:hover { color: var(--primary); }
        .related-card-body p { font-size: 0.90rem; color: var(--text-light); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-body .meta { font-size: 0.82rem; color: var(--text-light); }

        /* ========== Tags / Badges ========== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: var(--radius-xl);
            font-size: 0.80rem; font-weight: 600; background: var(--border-light);
            color: var(--text-secondary); transition: var(--transition);
        }
        .badge-primary { background: var(--primary); color: #fff; }
        .badge-accent { background: var(--accent); color: #fff; }
        .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
        .tag-list a {
            padding: 4px 14px; border-radius: var(--radius-xl); font-size: 0.80rem;
            background: var(--border-light); color: var(--text-secondary);
            transition: var(--transition); border: 1px solid transparent;
        }
        .tag-list a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ========== FAQ ========== */
        .faq-block { margin-top: 48px; }
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 18px 0; }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1.05rem; cursor: pointer;
            color: var(--text-primary); transition: var(--transition);
            background: none; border: none; width: 100%; text-align: left; padding: 4px 0;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 0 0 4px; }
        .faq-answer p { color: var(--text-secondary); font-size: 0.95rem; margin-top: 10px; }

        /* ========== CTA ========== */
        .cta-section {
            padding: 72px 0; text-align: center;
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center; opacity: 0.10;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.80); font-size: 1.1rem; max-width: 640px; margin: 0 auto 32px; }
        .cta-section .btn-white { box-shadow: var(--shadow-md); }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.80); padding: 60px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo-text { color: var(--text-white); font-size: 1.6rem; margin-bottom: 12px; display: inline-block; }
        .footer-brand p { color: rgba(255,255,255,0.60); font-size: 0.92rem; line-height: 1.8; margin-top: 10px; }
        .footer-social { display: flex; gap: 14px; margin-top: 16px; }
        .footer-social a {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.70);
            font-size: 1.15rem; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 0.92rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-col ul li span { color: rgba(255,255,255,0.55); font-size: 0.90rem; display: inline-flex; align-items: center; gap: 6px; }
        .footer-bottom {
            text-align: center; padding: 22px 0;
            color: rgba(255,255,255,0.40); font-size: 0.85rem;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--accent-light); }

        /* ========== Responsive ========== */
        @media screen and (max-width: 1024px) {
            .article-wrapper { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media screen and (max-width: 768px) {
            body { padding-top: calc(var(--header-height) + 0px); }
            .top-bar-wrap { display: none; }
            .main-nav { top: 0; }
            .nav-menu {
                position: fixed; top: var(--header-height); left: 0; width: 100%;
                background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
                flex-direction: column; padding: 20px; gap: 4px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%); opacity: 0; visibility: hidden;
                transition: var(--transition); box-shadow: var(--shadow-lg);
                max-height: 70vh; overflow-y: auto;
            }
            .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
            .nav-menu a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .nav-menu a.active::after { display: none; }
            .nav-toggle { display: block; }
            .nav-cta.hide-for-small-only { display: none; }
            .article-hero { padding: 60px 0 50px; min-height: 240px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-meta { gap: 12px; font-size: 0.85rem; flex-wrap: wrap; }
            .article-main { padding: 28px 20px; }
            .article-main .content-body { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; gap: 18px; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            h1 { font-size: 1.9rem; }
            h2 { font-size: 1.6rem; }
        }

        @media screen and (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-meta span { font-size: 0.80rem; }
            .article-main { padding: 20px 16px; }
            .sidebar-card { padding: 20px 16px; }
            .btn { padding: 12px 24px; font-size: 0.92rem; }
            .related-card-body { padding: 16px; }
            .footer-col h4 { font-size: 0.95rem; }
        }

        /* ========== Utility ========== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .section-title { text-align: center; margin-bottom: 40px; }
        .section-title .subtitle { color: var(--text-light); font-size: 1rem; max-width: 520px; margin: 8px auto 0; }
        .divider { width: 48px; height: 4px; background: var(--primary); border-radius: 4px; margin: 12px auto 0; }

        /* ========== share buttons ========== */
        .share-bar { display: flex; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border-light); flex-wrap: wrap; align-items: center; }
        .share-bar span { font-weight: 600; font-size: 0.92rem; color: var(--text-secondary); margin-right: 8px; }
        .share-btn {
            display: inline-flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%; background: var(--border-light);
            color: var(--text-secondary); font-size: 1rem; transition: var(--transition);
            border: none; cursor: pointer;
        }
        .share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8a;
            --primary-dark: #0f2440;
            --secondary: #e84c3d;
            --secondary-light: #f06a5a;
            --accent: #f7c948;
            --bg-light: #f8fafc;
            --bg-dark: #0f2440;
            --text-dark: #1a1a2e;
            --text-mid: #4a4a5e;
            --text-light: #7a7a8e;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f0f0f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            transition: var(--transition);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            text-align: center;
            color: var(--text-mid);
            max-width: 680px;
            margin: 0 auto 48px auto;
            line-height: 1.8;
        }

        .text-center {
            text-align: center;
        }

        /* ===== 导航 Header ===== */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

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

        .nav-brand {
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .logo-text span {
            color: var(--secondary);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-menu a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mid);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            background: rgba(26, 58, 92, 0.06);
            color: var(--primary);
        }
        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-menu a.active:hover {
            background: var(--primary-light);
        }

        .nav-cta .btn {
            font-size: 0.9rem;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
        }

        /* ===== 按钮系统 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 76, 61, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 0.9rem;
        }
        .btn-lg {
            padding: 18px 44px;
            font-size: 1.1rem;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(247, 201, 72, 0.18);
            color: #8a6d00;
        }
        .badge-primary {
            background: rgba(26, 58, 92, 0.1);
            color: var(--primary);
        }
        .badge-secondary {
            background: rgba(232, 76, 61, 0.1);
            color: var(--secondary);
        }
        .badge-accent {
            background: rgba(247, 201, 72, 0.2);
            color: #7a5f00;
        }

        /* ===== Hero 区块 ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.85) 0%, rgba(26, 58, 92, 0.65) 100%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-section h1 {
            font-size: 3.4rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-section h1 span {
            color: var(--accent);
        }
        .hero-section .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 700px;
            margin: 0 auto 36px auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 核心优势板块 ===== */
        .features-section {
            background: #ffffff;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .feature-card .icon-box {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(26, 58, 92, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon-box {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== 服务流程板块 ===== */
        .process-section {
            background: var(--bg-light);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-mid);
            line-height: 1.6;
        }
        .process-step .step-arrow {
            display: none;
        }

        /* ===== 适用场景板块 ===== */
        .scenario-section {
            background: #ffffff;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .scenario-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .scenario-card .scenario-img {
            height: 200px;
            background: var(--bg-dark) center center / cover no-repeat;
            position: relative;
        }
        .scenario-card .scenario-img .overlay-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(15, 36, 64, 0.75);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .scenario-card .scenario-body {
            padding: 24px 22px 28px;
        }
        .scenario-card .scenario-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .scenario-card .scenario-body p {
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .scenario-card .scenario-body .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .scenario-card .scenario-body .tag-group span {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(26, 58, 92, 0.06);
            font-size: 0.8rem;
            color: var(--text-mid);
        }

        /* ===== 案例 / 社会认同 ===== */
        .testimonial-section {
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
            position: relative;
        }
        .testimonial-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 36, 64, 0.82);
            z-index: 1;
        }
        .testimonial-section .container {
            position: relative;
            z-index: 2;
        }
        .testimonial-section .section-title {
            color: #fff;
        }
        .testimonial-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testimonial-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
        }
        .testimonial-card:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            font-style: italic;
        }
        .testimonial-card .quote i {
            color: var(--accent);
            opacity: 0.6;
            margin-right: 6px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .testimonial-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(247, 201, 72, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            color: var(--accent);
        }
        .testimonial-card .author .info strong {
            display: block;
            font-size: 0.95rem;
            color: #fff;
        }
        .testimonial-card .author .info span {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 统计数字 ===== */
        .stats-section {
            background: #ffffff;
            padding: 60px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-number span {
            color: var(--secondary);
        }
        .stat-item .stat-label {
            font-size: 1rem;
            color: var(--text-mid);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            text-align: left;
            gap: 16px;
        }
        .faq-question::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.2rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"]::after {
            transform: rotate(180deg);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-answer {
            padding: 0 24px 20px 24px;
            color: var(--text-mid);
            line-height: 1.8;
            font-size: 0.95rem;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark) url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            position: relative;
            color: #fff;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 36, 64, 0.78);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px auto;
            line-height: 1.8;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.4rem;
        }
        .footer-brand .logo-text span {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            margin-right: 8px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 移动端响应式 ===== */
        @media screen and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-section h1 {
                font-size: 2.6rem;
            }
        }

        @media screen and (max-width: 768px) {
            .main-nav .container {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 16px 0;
                border-top: 1px solid var(--border);
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 24px;
                border-radius: 0;
                font-size: 1rem;
            }
            .nav-menu a.active {
                background: rgba(26, 58, 92, 0.08);
                color: var(--primary);
            }
            .nav-cta.hide-for-small-only {
                display: none !important;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section .hero-desc {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .section-padding {
                padding: 50px 0;
            }
        }

        @media screen and (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .hero-section h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== 辅助类 ===== */
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Foundation 覆盖：去掉默认按钮圆角过时样式 */
        .button {
            transition: var(--transition);
        }

.faq-answer {
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        /* 导航 active 覆盖（内页） */
        .main-nav .nav-menu a.active {
            background: var(--primary);
            color: #fff;
        }
        @media screen and (max-width: 768px) {
            .main-nav .nav-menu a.active {
                background: rgba(26, 58, 92, 0.08);
                color: var(--primary);
            }
        }
        /* 确保 hero 图片路径正确 */
        .hero-section {
            background-image: url('/assets/images/backpic/back-1.webp');
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }