/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a3a6b;
            --color-primary-light: #2a5a9e;
            --color-primary-dark: #0f2444;
            --color-accent: #e8a838;
            --color-accent-light: #f0c060;
            --color-accent-dark: #c88a1a;
            --color-bg: #f8f9fb;
            --color-bg-alt: #ffffff;
            --color-bg-dark: #0f1a2e;
            --color-text: #1a1a2e;
            --color-text-soft: #4a4a5a;
            --color-text-muted: #7a7a8a;
            --color-text-light: #ffffff;
            --color-border: #e2e5ea;
            --color-border-light: #f0f2f5;
            --color-success: #2d8f5c;
            --color-warning: #e8a838;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            overflow-x: hidden;
        }
        a { color: var(--color-primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--color-text); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--color-text-soft); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .text-accent { color: var(--color-accent); }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-4 { margin-top: 2rem; }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 50px 0; }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .section-title p { max-width: 700px; margin: 1rem auto 0; color: var(--color-text-muted); font-size: 1.05rem; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border-light);
            z-index: 1000;
            transition: var(--transition);
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }
        .site-logo i { color: var(--color-accent); font-size: 1.6rem; }
        .site-logo span { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { opacity: 0.9; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover, .nav-list a.active { color: var(--color-primary); background: rgba(26,58,107,0.06); }
        .nav-list a.active { font-weight: 600; color: var(--color-primary); }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(232,168,56,0.35);
            transition: var(--transition);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,168,56,0.45); color: #fff !important; }
        .nav-cta i { font-size: 0.85rem; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border-radius: 50px;
            padding: 0 16px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(232,168,56,0.15); }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 0.9rem;
            width: 160px;
            outline: none;
            color: var(--color-text);
        }
        .nav-search input::placeholder { color: var(--color-text-muted); }
        .nav-search button { color: var(--color-text-muted); padding: 8px 4px; transition: var(--transition); }
        .nav-search button:hover { color: var(--color-accent); }
        .menu-toggle { display: none; font-size: 1.5rem; color: var(--color-primary); padding: 8px; }

        /* Mobile Nav */
        @media (max-width: 1023px) {
            .nav-list, .nav-search { display: none; }
            .menu-toggle { display: block; }
            .nav-list.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.99);
                padding: 20px;
                gap: 4px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-list.mobile-open a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-list.mobile-open .nav-cta { margin-top: 8px; justify-content: center; }
            .nav-search.mobile-open { display: flex; margin: 8px 20px 4px; }
            .nav-search.mobile-open input { width: 100%; }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            overflow: hidden;
            margin-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,68,0.85) 0%, rgba(26,58,107,0.7) 100%);
        }
        .hero .container { position: relative; z-index: 1; width: 100%; }
        .hero-content { max-width: 760px; padding: 40px 0; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(232,168,56,0.2);
            border: 1px solid rgba(232,168,56,0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--color-accent-light);
            margin-bottom: 1.5rem;
            font-weight: 500;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            color: var(--color-text-light);
            line-height: 1.25;
            margin-bottom: 1.2rem;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight { color: var(--color-accent); }
        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: rgba(255,255,255,0.8);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #fff !important;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(232,168,56,0.4);
            transition: var(--transition);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(232,168,56,0.5); color: #fff !important; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: rgba(255,255,255,0.1);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.25);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.2); color: #fff !important; transform: translateY(-2px); }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat { text-align: left; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--color-accent); line-height: 1.2; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

        @media (max-width: 768px) {
            .hero { min-height: 70vh; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat { flex: 1; min-width: 80px; }
            .hero-stat .num { font-size: 1.5rem; }
        }

        /* ===== Features / Core Advantages ===== */
        .features { background: var(--color-bg-alt); }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            transition: var(--transition);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, rgba(26,58,107,0.08), rgba(232,168,56,0.08));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); color: #fff; }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
        .feature-card p { font-size: 0.92rem; color: var(--color-text-muted); margin-bottom: 0; }

        @media (max-width: 1023px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .feature-grid { grid-template-columns: 1fr; } }

        /* ===== How It Works / Process ===== */
        .process { background: var(--color-bg); }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 36px 24px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }
        .process-step h3 { font-size: 1.1rem; margin-bottom: 10px; }
        .process-step p { font-size: 0.92rem; color: var(--color-text-muted); margin-bottom: 0; }
        .step-arrow {
            display: none;
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
            color: var(--color-accent);
        }

        @media (min-width: 1024px) {
            .process-step:not(:last-child) .step-arrow { display: block; }
        }
        @media (max-width: 768px) { .process-steps { grid-template-columns: 1fr; gap: 20px; } }

        /* ===== CMS / Latest News ===== */
        .cms-section { background: var(--color-bg-alt); }
        .cms-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cms-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .cms-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
        .cms-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--color-border-light);
        }
        .cms-card-body { padding: 20px 22px 24px; }
        .cms-card .cat-tag {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(26,58,107,0.08);
            color: var(--color-primary);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .cms-card h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
        .cms-card h3 a { color: var(--color-text); }
        .cms-card h3 a:hover { color: var(--color-primary-light); }
        .cms-card p { font-size: 0.9rem; color: var(--color-text-muted); margin-bottom: 12px; }
        .cms-card .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }
        .cms-card .meta i { margin-right: 4px; }
        .cms-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-muted);
            font-size: 1.05rem;
            grid-column: 1 / -1;
        }
        .cms-empty i { font-size: 2.4rem; color: var(--color-border); margin-bottom: 16px; display: block; }

        @media (max-width: 1023px) { .cms-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .cms-grid { grid-template-columns: 1fr; } }

        /* ===== Featured / Recommendations ===== */
        .featured { background: var(--color-bg); }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            aspect-ratio: 4 / 3;
        }
        .featured-card:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }
        .featured-card img { width: 100%; height: 100%; object-fit: cover; }
        .featured-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,36,68,0.85) 0%, rgba(15,36,68,0.1) 60%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px 22px;
        }
        .featured-card .tag {
            display: inline-block;
            padding: 3px 12px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            width: fit-content;
        }
        .featured-card h3 { color: #fff; font-size: 1.05rem; margin-bottom: 4px; }
        .featured-card p { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin-bottom: 0; }

        @media (max-width: 1023px) { .featured-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .featured-grid { grid-template-columns: 1fr; } }

        /* ===== Testimonials / Trust ===== */
        .testimonials { background: var(--color-bg-alt); }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .testimonial-card .stars { color: var(--color-accent); font-size: 0.9rem; margin-bottom: 12px; }
        .testimonial-card blockquote {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            font-style: italic;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .testimonial-card .author .name { font-weight: 600; font-size: 0.9rem; }
        .testimonial-card .author .role { font-size: 0.8rem; color: var(--color-text-muted); }

        @media (max-width: 1023px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .testimonial-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq { background: var(--color-bg); }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--color-primary-light); }
        .faq-question i { font-size: 0.85rem; color: var(--color-accent); transition: var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta .container { position: relative; z-index: 1; }
        .cta-content { text-align: center; max-width: 680px; margin: 0 auto; }
        .cta h2 { color: var(--color-text-light); margin-bottom: 1rem; }
        .cta p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 2rem; }
        .cta .btn-primary { font-size: 1.1rem; padding: 16px 42px; }
        .cta .btn-secondary { border-color: rgba(255,255,255,0.3); color: #fff !important; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.7);
            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 .site-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 300px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover { color: var(--color-accent); transform: translateX(3px); }
        .footer-col ul a i { font-size: 0.7rem; }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            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(--color-accent); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }

        @media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== Responsive Helpers ===== */
        @media (max-width: 768px) {
            .section-pad { padding: 50px 0; }
            .section-pad-sm { padding: 30px 0; }
            .hero-content { padding: 20px 0; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { justify-content: center; }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            transform: translateY(20px);
        }
        .back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); color: #fff; }

        /* ===== Foundation Overrides ===== */
        .grid-x, .grid-container { max-width: none; }
        .cell { padding: 0; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1341b0;
            --primary-light: #3b82f6;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-light: #f1f5f9;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.14);
            --transition: 0.30s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-primary); font-weight: 700; }

        /* ===== Utility ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 48px 0; }
        .text-center { text-align: center; }
        .text-muted { color: var(--text-muted); }
        .mb-1 { margin-bottom: 12px; }
        .mb-2 { margin-bottom: 24px; }
        .mb-3 { margin-bottom: 40px; }

        /* ===== Header & Navigation (Foundation-based custom) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
        }
        .site-logo i { font-size: 1.6rem; color: var(--secondary); }
        .site-logo:hover { color: var(--primary-dark); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: var(--bg-light); }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(26,86,219,0.08);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: var(--text-white) !important;
            padding: 10px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(26,86,219,0.30);
        }
        .nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(26,86,219,0.35); }
        .nav-cta i { font-size: 1rem; }

        /* Mobile menu toggle */
        .menu-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--text-primary); cursor: pointer; padding: 4px 8px; border-radius: var(--radius-sm); }
        .menu-toggle:focus-visible { outline: 3px solid var(--primary-light); }

        /* ===== Hero ===== */
        .article-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            color: var(--text-white);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .article-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero .meta-line span { display: flex; align-items: center; gap: 6px; }
        .article-hero .meta-line i { color: var(--secondary); }
        .article-hero .breadcrumb { margin-bottom: 20px; font-size: 0.9rem; color: rgba(255,255,255,0.6); }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: var(--secondary); }

        /* ===== Article Content ===== */
        .article-main { padding: 60px 0 80px; }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body p { margin-bottom: 20px; font-size: 1.05rem; color: var(--text-secondary); line-height: 1.8; }
        .article-body h2 { font-size: 1.6rem; margin: 36px 0 16px; color: var(--text-primary); }
        .article-body h3 { font-size: 1.25rem; margin: 28px 0 12px; color: var(--text-primary); }
        .article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
        .article-body ul li { list-style: disc; margin-bottom: 8px; color: var(--text-secondary); }
        .article-body ol li { list-style: decimal; margin-bottom: 8px; color: var(--text-secondary); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow); }
        .article-body .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0 0; padding: 20px 0 0; border-top: 1px solid var(--border); }
        .article-body .tag-list a {
            padding: 6px 16px;
            background: var(--bg-light);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .article-body .tag-list a:hover { background: var(--primary); color: var(--text-white); }

        /* Sidebar */
        .article-sidebar { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-card h4 { font-size: 1.1rem; margin-bottom: 16px; 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); display: flex; align-items: center; gap: 8px; font-size: 0.95rem; }
        .sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-card ul li a i { font-size: 0.7rem; color: var(--text-muted); }

        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box .btn { display: inline-block; padding: 12px 32px; background: var(--primary); color: var(--text-white); border-radius: 50px; font-weight: 600; }
        .not-found-box .btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

        /* ===== FAQ Section ===== */
        .faq-section { background: var(--bg-light); }
        .faq-grid { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-item summary {
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--text-primary);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item .faq-answer { padding-top: 16px; color: var(--text-secondary); line-height: 1.7; border-top: 1px solid var(--border); margin-top: 16px; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            padding: 72px 0;
            text-align: center;
        }
        .cta-section h2 { font-size: 2rem; color: var(--text-white); margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; opacity: 0.9; max-width: 600px; margin: 0 auto 28px; }
        .cta-btn {
            display: inline-block;
            padding: 16px 48px;
            background: var(--secondary);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(245,158,11,0.35);
            transition: var(--transition);
        }
        .cta-btn:hover { background: var(--secondary-dark); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(245,158,11,0.45); color: var(--text-white); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            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 .site-logo { color: var(--text-white); margin-bottom: 16px; }
        .footer-brand .site-logo i { color: var(--secondary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; opacity: 0.75; max-width: 360px; }
        .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: 0.9rem; display: flex; align-items: center; gap: 6px; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-col ul li a i { font-size: 0.65rem; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { position: static; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-hero h1 { font-size: 2.2rem; }
        }

        @media screen and (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px;
                box-shadow: 0 12px 32px rgba(0,0,0,0.10);
                border-bottom: 1px solid var(--border);
                gap: 4px;
            }
            .nav-list.open { display: flex; }
            .nav-list a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-list a.active::after { display: none; }
            .nav-cta { justify-content: center; margin-top: 8px; }
            .article-hero { padding: 64px 0 48px; min-height: auto; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-body { padding: 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section-pad { padding: 48px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 1rem; }
        }

        @media screen and (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.4rem; }
            .article-body { padding: 16px; }
            .article-body p { font-size: 0.95rem; }
            .site-logo { font-size: 1.1rem; }
            .site-logo i { font-size: 1.3rem; }
            .faq-item { padding: 16px 20px; }
            .cta-btn { padding: 14px 32px; font-size: 1rem; }
            .footer-grid { gap: 24px; }
        }

        /* ===== Print ===== */
        @media print {
            .site-header, .site-footer, .article-sidebar, .cta-section, .faq-section { display: none; }
            .article-body { box-shadow: none; border: none; padding: 0; }
            .article-hero { padding: 20px 0; background: var(--bg-white); color: var(--text-primary); min-height: auto; }
            .article-hero h1 { color: var(--text-primary); }
            .article-hero::before { display: none; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --accent: #e63946;
            --accent-hover: #c5303c;
            --accent-light: #ffebee;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #64748b;
            --text-light: #e2e8f0;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --spacer: 80px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 16px;
            padding-top: var(--header-h);
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            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;
            line-height: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.25;
        }

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

        .section-title {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            text-align: center;
            color: var(--text-dark);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 3rem;
        }

        .section-padding {
            padding: var(--spacer) 0;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .site-logo span {
            white-space: nowrap;
        }
        .site-logo:hover {
            opacity: 0.85;
            color: var(--primary);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(26, 58, 107, 0.08);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }

        .nav-cta {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3);
            transition: var(--transition) !important;
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.4) !important;
            transform: translateY(-1px);
            color: #fff !important;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 40px;
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(42, 90, 158, 0.12);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            outline: none;
            min-width: 140px;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 0 0 0 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--primary);
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 80px 24px 60px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(15, 26, 46, 0.3) 0%, rgba(15, 26, 46, 0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            letter-spacing: -0.02em;
        }
        .hero h1 span {
            color: #ffb7b7;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-accent-light {
            background: var(--accent-light);
            color: var(--accent);
            border: 1px solid transparent;
        }
        .btn-accent-light:hover {
            background: #ffdbde;
            transform: translateY(-2px);
            color: var(--accent-hover);
        }

        /* ===== Features / 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
            margin-top: 10px;
        }
        .feature-card {
            background: var(--bg-white);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: #fff;
            background: var(--primary);
        }
        .feature-card:nth-child(1) .icon-wrap {
            background: #2a5a9e;
        }
        .feature-card:nth-child(2) .icon-wrap {
            background: #e63946;
        }
        .feature-card:nth-child(3) .icon-wrap {
            background: #1a8a6a;
        }
        .feature-card:nth-child(4) .icon-wrap {
            background: #d97706;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Process / 登录流程 ===== */
        .process-section {
            background: var(--bg-white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 28px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-light);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            background: var(--bg-white);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(26, 58, 107, 0.25);
        }
        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .step-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
        }
        .step-card .step-img {
            margin: 16px auto 0;
            max-width: 140px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        /* ===== Scenarios / 适用场景 ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .scenario-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .scenario-card .card-body {
            padding: 24px 20px;
        }
        .scenario-card .card-body h4 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .scenario-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .scenario-card .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent);
            margin-top: 10px;
        }

        /* ===== Stats / 统计数据 ===== */
        .stats-section {
            background: var(--primary);
            color: #fff;
            text-align: center;
        }
        .stats-section .section-title {
            color: #fff;
        }
        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 32px;
            margin-top: 20px;
        }
        .stat-item {
            padding: 20px 12px;
        }
        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
        }
        .stat-item i {
            font-size: 2rem;
            color: rgba(255, 255, 255, 0.3);
            margin-bottom: 10px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            text-align: center;
            padding: 72px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.08;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 40px;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.45);
        }
        .cta-section .btn-primary:hover {
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.6);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .site-footer .container {
            max-width: var(--max-width);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1.2rem;
        }
        .footer-brand .site-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-col ul li a:hover i {
            color: var(--accent);
        }
        .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: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.2rem;
            transition: var(--transition);
            display: inline-flex;
        }
        .footer-social a:hover {
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
                --spacer: 48px;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: var(--shadow-md);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(26, 58, 107, 0.08);
            }
            .nav-search {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero {
                min-height: 400px;
                padding: 60px 20px 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 0.9rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 36px 0;
            }
            .container {
                padding: 0 16px;
            }
            .site-logo span {
                font-size: 1rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== Extra utilities ===== */
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-primary {
            background: rgba(26, 58, 107, 0.1);
            color: var(--primary);
        }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0 auto 1.5rem;
        }
        .divider-light {
            background: rgba(255, 255, 255, 0.5);
        }