/* roulang page: index */
:root {
            --primary: #1a365d;
            --primary-light: #2b6cb0;
            --primary-dark: #0f1f3d;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --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 10px 40px rgba(0,0,0,0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* header / nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.98);
            box-shadow: var(--shadow-sm);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .nav-logo a {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo a i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .nav-logo a span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-tabs li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-tabs li a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .nav-tabs li a:hover {
            color: var(--primary);
            background: rgba(26,54,93,0.06);
            border-color: rgba(26,54,93,0.1);
        }
        .nav-tabs li a.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26,54,93,0.25);
        }
        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), #d97706);
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .nav-cta a:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245,158,11,0.35);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }

        /* hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
            background: var(--primary-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 6s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,31,61,0.85) 0%, rgba(26,54,93,0.7) 50%, rgba(15,31,61,0.6) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(245,158,11,0.18);
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(245,158,11,0.25);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-light), #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-actions .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            box-shadow: 0 8px 30px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245,158,11,0.4);
        }
        .hero-actions .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 500;
            color: #fff;
            border: 1.5px solid rgba(255,255,255,0.3);
            transition: var(--transition);
        }
        .hero-actions .btn-outline:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.5);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 52px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stats .stat-item {
            text-align: left;
        }
        .hero-stats .stat-item .num {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            margin-top: 4px;
        }

        /* section common */
        .section {
            padding: 80px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(26,54,93,0.06);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 52px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin: 0 auto;
        }

        /* cards grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(26,54,93,0.12);
        }
        .service-card .icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .service-card .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .service-card .tag {
            padding: 3px 12px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(26,54,93,0.06);
            color: var(--primary-light);
        }

        /* stats / numbers */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-card {
            text-align: center;
            padding: 40px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .num .suffix {
            font-size: 1.4rem;
            font-weight: 600;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .stat-card .desc {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* news list (CMS) */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(26,54,93,0.1);
            transform: translateX(4px);
        }
        .news-item .date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            padding: 8px 4px;
            border-radius: var(--radius-sm);
            background: rgba(26,54,93,0.04);
        }
        .news-item .date .day {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .news-item .date .month {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-transform: uppercase;
        }
        .news-item .info {
            flex: 1;
            min-width: 0;
        }
        .news-item .info .title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .info .title a:hover {
            color: var(--primary-light);
        }
        .news-item .info .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .news-item .info .meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-empty {
            padding: 40px;
            text-align: center;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border-light);
        }

        /* process / steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(26,54,93,0.2);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* faq */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 20px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-light);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-dark);
            padding: 4px 0;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .icon {
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 12px 0 4px;
        }

        /* cta */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-inner .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            border-radius: 40px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            box-shadow: 0 8px 30px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .cta-inner .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245,158,11,0.45);
        }
        .cta-inner .contact-meta {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-top: 28px;
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
        }
        .cta-inner .contact-meta i {
            margin-right: 6px;
        }

        /* footer */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* responsive */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
            .section-title { font-size: 1.9rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-tabs { display: none; }
            .nav-toggle { display: block; }
            .nav-cta { display: none; }
            .nav-mobile-open .nav-tabs {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 8px;
            }
            .nav-mobile-open .nav-tabs li a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
            }
            .nav-mobile-open .nav-cta {
                display: block;
                position: absolute;
                top: 72px;
                right: 24px;
                margin-top: 190px;
            }
            .hero { min-height: 70vh; padding: 100px 0 60px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stats .stat-item .num { font-size: 1.6rem; }
            .section { padding: 60px 0; }
            .section-title { font-size: 1.6rem; }
            .card-grid-3 { grid-template-columns: 1fr; }
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
            .news-item { flex-direction: column; align-items: flex-start; gap: 12px; }
            .news-item .date { width: auto; display: flex; gap: 8px; align-items: center; }
            .news-item .date .day { font-size: 1.1rem; }
            .process-steps { grid-template-columns: 1fr; gap: 16px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .cta-inner h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero-stats { flex-direction: column; gap: 16px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline { width: 100%; justify-content: center; }
            .card-grid-4 { grid-template-columns: 1fr; }
            .stat-card { padding: 24px 16px; }
            .stat-card .num { font-size: 2rem; }
            .section-title { font-size: 1.4rem; }
            .cta-inner .btn-cta { width: 100%; justify-content: center; }
            .cta-inner .contact-meta { flex-direction: column; gap: 8px; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-lighter: #3a7abc;
            --primary-dark: #0f2240;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c8a020;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section-alt: #f0f4f8;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-light: #e8ecf0;
            --border-color: #e2e8f0;
            --border-light: #eef2f6;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.15);
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul { list-style: none; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
        }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }
        @media (max-width: 768px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.15rem; }
        }

        /* ===== Section Spacing ===== */
        .section-padding { padding: 80px 0; }
        @media (max-width: 768px) { .section-padding { padding: 50px 0; } }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 6px rgba(0,0,0,0.03);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 16px;
        }
        .nav-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .nav-logo a i { color: var(--accent); font-size: 1.6rem; }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-tabs li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs li a i { font-size: 0.85rem; }
        .nav-tabs li a:hover {
            color: var(--primary);
            background: rgba(26,58,92,0.06);
        }
        .nav-tabs li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 10px rgba(26,58,92,0.2);
        }
        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(232,184,48,0.3);
        }
        .nav-cta a:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232,184,48,0.35);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }
        @media (max-width: 820px) {
            .nav-tabs, .nav-cta { display: none; }
            .nav-toggle { display: block; }
            .nav-inner { height: 62px; }
            .nav-logo a { font-size: 1.2rem; }
            .nav-tabs.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                padding: 12px 20px 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                z-index: 999;
                gap: 2px;
            }
            .nav-tabs.open li a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-cta.mobile-show {
                display: block;
                margin-top: 8px;
            }
            .nav-cta.mobile-show a {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Hero (Article) ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.88) 0%, rgba(26,58,92,0.75) 100%);
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb i { font-size: 0.6rem; color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.6rem;
            color: #fff;
            max-width: 900px;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero .meta i { margin-right: 6px; color: var(--accent); }
        @media (max-width: 768px) {
            .article-hero { padding: 50px 0 40px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero .meta { gap: 12px; font-size: 0.8rem; }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 50px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 36px;
            margin-bottom: 16px;
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-body img {
            margin: 28px auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-section-alt);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body a {
            color: var(--primary-light);
            border-bottom: 1px solid transparent;
        }
        .article-body a:hover {
            border-bottom-color: var(--primary-light);
        }
        .article-body .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .tag-list span {
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a i { color: var(--accent); font-size: 0.7rem; }
        .sidebar-cta {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h3 { color: #fff; margin-bottom: 12px; }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.85; margin-bottom: 20px; }
        .sidebar-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-cta a:hover { background: var(--accent-light); transform: translateY(-2px); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 40px; }
            .article-body { padding: 30px 28px; }
        }
        @media (max-width: 640px) {
            .article-body { padding: 20px 16px; font-size: 0.98rem; }
        }

        /* ===== Related Services ===== */
        .related-section {
            background: var(--bg-section-alt);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .info {
            padding: 20px 22px 24px;
        }
        .related-card .info h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .related-card .info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .related-card .info a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card .info a i { font-size: 0.7rem; transition: var(--transition); }
        .related-card .info a:hover i { transform: translateX(4px); }
        @media (max-width: 900px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 580px) {
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 36px auto 0;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-lighter); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            gap: 16px;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 0.9rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,26,46,0.82);
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; opacity: 0.85; max-width: 600px; margin: 0 auto 32px; }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(232,184,48,0.3);
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(232,184,48,0.4);
        }
        @media (max-width: 640px) {
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
        }
        .site-footer .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);
        }
        .site-footer .footer-brand .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo i { color: var(--accent); }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            font-size: 0.88rem;
            opacity: 0.75;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            opacity: 1;
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-col ul li a i { color: var(--accent); }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.82rem;
            opacity: 0.6;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a { color: rgba(255,255,255,0.7); }
        .site-footer .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 860px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 540px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 24px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .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 a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 500;
            transition: var(--transition);
        }
        .not-found-box a:hover { background: var(--primary-light); transform: translateY(-2px); }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 32px; }
        .mb-4 { margin-bottom: 16px; }
        .gap-4 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .section-title {
            text-align: center;
            margin-bottom: 12px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }

        /* focus / accessibility */
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        /* Tailwind overrides */
        .tw-bg-primary { background-color: var(--primary); }
        .tw-text-accent { color: var(--accent); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #d4a843;
            --secondary-light: #e8c56a;
            --secondary-dark: #b8892e;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2b;
            --text-dark: #1a2332;
            --text-muted: #5a6a7e;
            --text-light: #8a9aae;
            --border-color: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 8px 28px rgba(26, 58, 92, 0.10);
            --shadow-lg: 0 20px 50px rgba(26, 58, 92, 0.14);
            --shadow-xl: 0 30px 70px rgba(26, 58, 92, 0.18);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: 0 1px 12px rgba(26, 58, 92, 0.04);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .nav-logo a i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .nav-logo a span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-light);
            padding: 4px 6px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
        }
        .nav-tabs li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs li a i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-tabs li a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.05);
        }
        .nav-tabs li a:hover i {
            color: var(--primary-light);
        }
        .nav-tabs li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 58, 92, 0.20);
        }
        .nav-tabs li a.active i {
            color: rgba(255, 255, 255, 0.9);
        }
        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(212, 168, 67, 0.30);
            transition: var(--transition);
        }
        .nav-cta a:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.40);
        }
        .nav-cta a i {
            font-size: 1rem;
        }

        @media (max-width: 900px) {
            .nav-tabs {
                gap: 2px;
                padding: 3px 4px;
            }
            .nav-tabs li a {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .nav-cta a {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .nav-cta a span {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
                order: 3;
            }
            .nav-tabs {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                border-radius: 0 0 16px 16px;
                padding: 12px 16px;
                gap: 4px;
                border: 1px solid var(--border-color);
                border-top: none;
                box-shadow: var(--shadow-lg);
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs li a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
            .nav-cta {
                order: 2;
            }
            .nav-cta a span {
                display: inline;
            }
            .nav-inner {
                height: 60px;
            }
        }
        @media (max-width: 480px) {
            .nav-logo a {
                font-size: 1.2rem;
            }
            .nav-logo a i {
                font-size: 1.3rem;
            }
            .nav-cta a {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .nav-cta a i {
                font-size: 0.85rem;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 67, 0.12) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 840px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(212, 168, 67, 0.18);
            border: 1px solid rgba(212, 168, 67, 0.30);
            border-radius: 50px;
            color: var(--secondary-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 24px;
        }
        .hero-section h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .hero-section h1 span {
            color: var(--secondary-light);
        }
        .hero-section p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 38px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 6px 24px rgba(212, 168, 67, 0.35);
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(212, 168, 67, 0.45);
        }
        .hero-actions .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 38px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.30);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .hero-actions .btn-outline:hover {
            border-color: var(--secondary);
            background: rgba(212, 168, 67, 0.10);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                padding: 100px 16px 60px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section p {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }

        /* ===== Section Common ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto;
        }
        .section-title .title-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(212, 168, 67, 0.12);
            border-radius: 50%;
            color: var(--secondary-dark);
            font-size: 1.4rem;
            margin-bottom: 16px;
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 1.7rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }

        /* ===== Services / Cards Grid ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(212, 168, 67, 0.25);
        }
        .service-card .icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, rgba(26, 58, 92, 0.06), rgba(212, 168, 67, 0.08));
            border-radius: 16px;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .service-card:hover .icon-wrap {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .service-card .tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 14px;
            background: rgba(212, 168, 67, 0.10);
            color: var(--secondary-dark);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .service-card {
                padding: 28px 20px 24px;
            }
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            color: #fff;
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--secondary-light);
            line-height: 1.1;
        }
        .stat-item .num span {
            font-size: 1.6rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-item .num {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
        }

        /* ===== Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 22px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 18px;
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .scenario-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .scenario-card .card-img {
            height: 180px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .scenario-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .scenario-card:hover .card-img img {
            transform: scale(1.05);
        }
        .scenario-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 26, 43, 0.5), transparent);
        }
        .scenario-card .card-body {
            padding: 22px 24px 26px;
        }
        .scenario-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .scenario-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        .scenario-card .card-body .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 14px;
        }
        .scenario-card .card-body .tag-list span {
            padding: 3px 12px;
            background: rgba(26, 58, 92, 0.05);
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        @media (max-width: 1024px) {
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .scenario-card .card-img {
                height: 150px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 67, 0.25);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 28px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--secondary-dark);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .faq-item[open] summary i {
            transform: rotate(90deg);
        }
        .faq-item summary:hover {
            background: rgba(26, 58, 92, 0.02);
        }
        .faq-item .answer {
            padding: 0 28px 22px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-item summary {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-item .answer {
                padding: 0 18px 18px;
                font-size: 0.88rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.80);
            margin-bottom: 32px;
        }
        .cta-inner .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 18px 44px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 28px rgba(212, 168, 67, 0.35);
            transition: var(--transition);
        }
        .cta-inner .cta-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 44px rgba(212, 168, 67, 0.45);
        }
        .cta-inner .cta-meta {
            margin-top: 20px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-inner .cta-meta i {
            margin-right: 4px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-inner h2 {
                font-size: 1.7rem;
            }
            .cta-inner p {
                font-size: 0.95rem;
            }
            .cta-inner .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary-light);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            color: var(--secondary);
            opacity: 0.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Scroll to top ===== */
        .scroll-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 999;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            pointer-events: none;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        @media (max-width: 480px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== Utility ===== */
        .text-secondary {
            color: var(--secondary-dark);
        }
        .text-primary {
            color: var(--primary);
        }
        .bg-white {
            background: var(--bg-white);
        }
        .bg-light {
            background: var(--bg-light);
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-4 {
            gap: 16px;
        }