/* roulang page: index */
:root {
            --bg-warm: #F8F7F4;
            --bg-section: #EFEDE8;
            --bg-card: #FFFFFF;
            --text-primary: #191D23;
            --text-secondary: #5A616B;
            --text-muted: #9AA1A8;
            --border-color: #E5E1DA;
            --brand-primary: #165E73;
            --brand-deep: #0D3A49;
            --accent-warm: #E3653F;
            --border-deep: #D8D4CB;
            --shadow-soft: 0 6px 18px rgba(0,0,0,0.06);
            --border-hover: #CDD9D3;
            --radius-card: 6px;
            --radius-lg: 4px;
            --transition-base: all 0.25s ease;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        @media (prefers-reduced-motion: reduce) {
        html { scroll-behavior: auto; }
        *, *::before, *::after { animation: none !important; transition: none !important; }
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-warm);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; vertical-align: middle; }
        a { color: var(--brand-primary); text-decoration: none; transition: var(--transition-base); }
        a:hover { color: var(--brand-deep); }
        .btn { border-radius: var(--radius-card); font-weight: 600; padding: 12px 32px; transition: var(--transition-base); }
        .btn-primary {
            background-color: var(--brand-primary) !important;
            border-color: var(--brand-primary) !important;
            color: #fff !important;
            padding: 12px 32px;
            border-radius: 6px;
            font-weight: 600;
        }
        .btn-primary:hover {
            background-color: var(--brand-deep) !important;
            border-color: var(--brand-deep) !important;
            box-shadow: 0 6px 16px rgba(15, 70, 86, 0.12);
            transform: translateY(-1px);
        }
        .btn-primary:active { transform: translateY(1px); }
        .btn-outline-custom {
            background-color: transparent !important;
            border: 1px solid #D5D1C8 !important;
            color: var(--text-primary) !important;
            padding: 12px 32px;
            border-radius: 6px;
            font-weight: 600;
        }
        .btn-outline-custom:hover {
            border-color: var(--brand-primary) !important;
            color: var(--brand-primary) !important;
            background-color: #EDEBE6 !important;
        }
        .btn-light-custom {
            background-color: #fff !important;
            border-color: #fff !important;
            color: var(--brand-deep) !important;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 6px;
        }
        .btn-light-custom:hover { background-color: var(--bg-section) !important; border-color: var(--bg-section) !important; color: var(--brand-primary) !important; }
        .text-link { display: inline-block; font-weight: 600; color: var(--brand-primary); }
        .text-link i { transition: transform 0.25s ease; display: inline-block; margin-left: 6px; }
        .text-link:hover i { transform: translateX(4px); }
        .eyebrow-tag {
            font-size: 12px;
            letter-spacing: 0.08em;
            font-weight: 700;
            color: var(--accent-warm);
            text-transform: uppercase;
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .eyebrow-tag::before { content: ''; display: inline-block; width: 28px; height: 2px; background-color: var(--accent-warm); }
        .section-padding { padding: 90px 0; }
        .bg-white { background-color: #fff !important; }
        .bg-warm { background-color: var(--bg-warm) !important; }
        .bg-section-tint { background-color: var(--bg-section) !important; }

        /* Header */
        .site-header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            width: 100%;
            z-index: 1040;
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled { box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
        .header-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .brand-col { display: flex; align-items: center; gap: 12px; }
        .brand-logo-mark {
            width: 38px;
            height: 38px;
            border: 1px solid var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: var(--brand-primary);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            background: rgba(22, 94, 115, 0.04);
        }
        .brand-text { font-weight: 700; font-size: 20px; color: var(--text-primary); white-space: nowrap; }
        .brand-text span { color: var(--brand-primary); }
        .nav-col { display: flex; align-items: center; gap: 36px; }
        .nav-col .nav-link-custom {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 600;
            position: relative;
            padding: 6px 0;
            background: none;
            border: 0;
            white-space: nowrap;
        }
        .nav-col .nav-link-custom::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background-color: var(--brand-primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }
        .nav-col .nav-link-custom:hover { color: var(--brand-primary); }
        .nav-col .nav-link-custom:hover::after { transform: scaleX(1); }
        .nav-col .nav-link-custom.active-link { color: var(--brand-primary); }
        .nav-col .nav-link-custom.active-link::after { transform: scaleX(1); }
        .header-actions { display: flex; align-items: center; gap: 16px; }
        .header-search { position: relative; }
        .header-search input {
            width: 180px;
            height: 38px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            padding: 0 40px 0 14px;
            background-color: var(--bg-warm);
            transition: var(--transition-base);
        }
        .header-search input:focus { width: 220px; background-color: #fff; border-color: var(--brand-primary); box-shadow: 0 0 0 3px rgba(22,94,115,0.1); outline: none; }
        .header-search .fa-magnifying-glass { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 14px; }
        .header-cta { padding: 8px 18px !important; font-size: 14px !important; }
        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 6px 10px;
            font-size: 20px;
            color: var(--text-primary);
            display: none;
            line-height: 1;
        }
        .dropdown-menu.custom-dropdown { border-radius: 8px; border-color: var(--border-color); box-shadow: 0 10px 30px rgba(0,0,0,0.06); padding: 8px; }
        .dropdown-item { font-size: 14px; color: var(--text-primary); border-radius: 6px; padding: 10px 14px; }
        .dropdown-item:hover { background-color: var(--bg-warm); color: var(--brand-primary); }
        .header-divider { display: inline-block; width: 1px; height: 20px; background-color: var(--border-color); }

        /* Hero */
        .hero-section {
            background-image: linear-gradient(rgba(248,247,244,0.92), rgba(248,247,244,0.97)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            min-height: 600px;
            display: flex;
            align-items: center;
            padding: 80px 0;
            position: relative;
        }
        .hero-container { max-width: 1280px; padding: 0 24px; width: 100%; margin: 0 auto; }
        .hero-content { max-width: 640px; }
        .hero-badge {
            display: inline-block;
            background-color: rgba(22,94,115,0.08);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 24px;
            border: 1px solid rgba(22,94,115,0.15);
        }
        .hero-title { font-size: 44px; font-weight: 800; line-height: 1.2; color: var(--text-primary); margin-bottom: 20px; letter-spacing: -0.02em; }
        .hero-title .highlight-brand { color: var(--brand-primary); border-bottom: 3px solid rgba(227,101,63,0.5); display: inline-block; }
        .hero-subtitle { font-size: 18px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 36px; }
        .hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
        .hero-info-strip {
            border-top: 1px solid var(--border-color);
            margin-top: 56px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
        }
        .info-strip-item { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 8px; }

        /* Section Titles */
        .section-header { margin-bottom: 48px; }

        /* Services */
        .feature-card-large {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: var(--transition-base);
        }
        .feature-card-large:hover { box-shadow: var(--shadow-soft); border-color: var(--border-hover); transform: translateY(-2px); }
        .feature-card-large .card-img { height: 280px; overflow: hidden; }
        .feature-card-large .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
        .feature-card-large:hover .card-img img { transform: scale(1.03); }
        .feature-card-large .card-body-content { padding: 28px; }
        .feature-card-large .card-title-custom { font-size: 22px; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .feature-list-vertical { display: flex; flex-direction: column; gap: 16px; }
        .feature-list-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            align-items: center;
            gap: 20px;
            background-color: var(--bg-warm);
            transition: var(--transition-base);
            cursor: pointer;
            height: 100%;
        }
        .feature-list-item:hover { box-shadow: var(--shadow-soft); border-color: var(--border-hover); background-color: #fff; }
        .feature-item-icon {
            width: 44px;
            height: 44px;
            border: 1px solid rgba(22,94,115,0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            background: rgba(22,94,115,0.04);
            flex-shrink: 0;
        }
        .feature-item-text h5 { font-size: 17px; font-weight: 600; margin: 0 0 4px; color: var(--text-primary); }
        .feature-item-text p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.5; }

        /* Stats */
        .stats-section { background-color: var(--bg-section); padding: 60px 0; }
        .stat-col { text-align: center; padding: 20px 16px; border-left: 1px solid rgba(0,0,0,0.06); }
        .stat-col:first-child { border-left: none; }
        .stat-number { font-size: 50px; font-weight: 800; color: var(--brand-primary); line-height: 1.2; letter-spacing: -0.02em; font-feature-settings: "tnum"; font-family: Inter, "Helvetica Neue", Arial, sans-serif; }
        .stat-label { font-size: 14px; color: var(--text-secondary); margin-top: 8px; }
        .stat-col .fa-solid { color: var(--accent-warm); margin-right: 6px; font-size: 0.6em; }

        /* Projects */
        .project-wrap { display: flex; align-items: center; gap: 60px; padding: 40px 0; }
        .project-image { flex: 0 0 46%; overflow: hidden; border-radius: var(--radius-lg); }
        .project-image img { width: 100%; height: 360px; object-fit: cover; aspect-ratio: 3/2; transition: transform 0.3s ease; }
        .project-wrap:hover .project-image img { transform: scale(1.03); }
        .project-info { flex: 1; }
        .project-tag {
            display: inline-block;
            padding: 4px 10px;
            background-color: rgba(22,94,115,0.08);
            color: var(--brand-primary);
            font-size: 11px;
            font-weight: 700;
            border-radius: 4px;
            margin-bottom: 16px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .project-title { font-size: 26px; font-weight: 700; margin-bottom: 16px; line-height: 1.35; color: var(--text-primary); }
        .project-desc { color: var(--text-secondary); margin-bottom: 24px; font-size: 15px; }

        /* News */
        .news-card {
            display: flex;
            flex-direction: column;
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: var(--transition-base);
            height: 100%;
        }
        .news-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-2px); border-color: var(--border-hover); }
        .news-category { font-size: 12px; color: var(--accent-warm); font-weight: 700; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.04em; }
        .news-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; line-height: 1.5; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; min-height: 54px; }
        .news-snippet { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
        .news-meta { border-top: 1px solid var(--border-color); padding-top: 16px; display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
        .news-date { font-weight: 600; color: var(--text-muted); font-size: 13px; }
        .badge-custom {
            background: rgba(22,94,115,0.10);
            color: var(--brand-primary);
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0.03em;
        }

        /* Workflow */
        .workflow-section { background-color: var(--bg-section); }
        .workflow-steps { border-left: 2px solid var(--border-color); margin-left: 16px; }
        .workflow-item { position: relative; padding: 0 0 40px 36px; }
        .workflow-number {
            position: absolute;
            left: -12px;
            top: 4px;
            width: 28px;
            height: 28px;
            background: #fff;
            border: 2px solid var(--brand-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            color: var(--brand-primary);
            z-index: 2;
            box-sizing: border-box;
        }
        .list-dot-outer {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            margin-right: 12px;
            float: left;
        }

        /* FAQ */
        .faq-container { max-width: 1100px; }
        .faq-item {
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }
        .faq-item:last-child { border-top: 0; }
        .faq-question {
            position: relative;
            padding: 18px 0;
            background: transparent;
            border: 0;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            transition: color 0.2s;
        }
        .faq-question:hover { color: var(--brand-primary); }
        .faq-icon { flex-shrink: 0; width: 28px; height: 28px; border: 1px solid var(--brand-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition-base); }
        .faq-icon i { color: var(--brand-primary); font-size: 13px; }
        .faq-item.open .faq-icon { transform: rotate(45deg); background-color: var(--brand-primary); }
        .faq-item.open .faq-icon i { color: #fff; }
        .faq-answer { display: none; padding-bottom: 22px; }
        .faq-item.open .faq-answer { display: block; }
        .faq-answer p { color: var(--text-secondary); font-size: 15px; line-height: 1.8; margin: 0; max-width: 800px; }

        /* CTA */
        .cta-bar { background-color: var(--brand-deep); border-radius: 0; padding: 48px 0; }
        .cta-holding { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
        .cta-text h2 { font-size: 30px; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .cta-text p { font-size: 16px; color: rgba(255,255,255,0.87); margin: 0; }
        @media (max-width: 767px) {
        .cta-holding { flex-direction: column; text-align: center; }
        }

        /* Contact */
        .contact-info-item { display: flex; gap: 16px; margin-bottom: 28px; }
        .contact-icon-circle {
            width: 40px;
            height: 40px;
            background-color: rgba(22,94,115,0.08);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            flex-shrink: 0;
        }
        .contact-info-item h6 { font-size: 14px; font-weight: 800; margin: 0 0 4px; }
        .contact-info-item p, .contact-info-item span { font-size: 14px; color: var(--text-secondary); margin: 0; }
        .form-control-custom {
            background-color: #FFFFFF;
            border: 1px solid #D8D4CB;
            border-radius: 6px;
            padding: 12px 16px;
            font-size: 15px;
        }
        .form-control-custom:focus {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(22, 94, 115, 0.10);
            outline: none;
        }

        /* Footer */
        .site-footer {
            background-color: #14181C;
            color: rgba(255,255,255,0.8);
            padding: 64px 0 0;
        }
        .site-footer h3 { color: #ffffff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
        .site-footer a { color: rgba(255,255,255,0.65); text-decoration: none; }
        .site-footer a:hover { color: #ffffff; }
        .footer-brand { font-size: 20px; font-weight: 700; color: #ffffff; margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
        .footer-brand .footer-mark {
            width: 32px;
            height: 32px;
            border: 1px solid rgba(255,255,255,0.4);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }
        .footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); margin-bottom: 20px; max-width: 320px; }
        .footer-list { list-style: none; padding: 0; margin: 0; }
        .footer-list li { margin-bottom: 12px; font-size: 14px; }
        .footer-nav-col { text-decoration: none; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; margin-top: 40px; }
        .footer-copy { font-size: 13px; text-align: center; color: var(--text-muted); display: flex; justify-content: space-between; flex-wrap: wrap; align-items: center; gap: 12px; }

        /* Reveal */
        .img-reveal { display: block; width: 100%; }
        .badge-text { font-size: 13px; color: var(--text-secondary); }

        /* Empty state */
        .empty-list-state {
            border: 1px dashed var(--border-deep);
            background-color: rgba(255,255,255,0.7);
            padding: 50px;
            text-align: center;
            color: var(--text-secondary);
            border-radius: 8px;
        }

        /* Mobile */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(25,29,35,0.5);
            z-index: 1050;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 320px;
            height: 100vh;
            background: #fff;
            z-index: 1060;
            box-shadow: -4px 0 20px rgba(0,0,0,0.1);
            padding: 24px;
            transition: right 0.3s ease;
        }
        .mobile-nav-panel.show { right: 0; display: block; right: 0; row-gap: 0; }
        .mobile-nav-panel .mobile-nav-link { display: flex; padding: 14px 0; border-bottom: 1px solid var(--border-color); font-weight: 600; color: var(--text-primary); }
        .mobile-nav-pager { justify-content: space-between; display: flex; align-items: center; margin-bottom: 20px; }
        .mobile-badge { background: none; border: 0; font-size: 24px; line-height: 1; padding: 4px; }
        .mobile-search { margin: 24px 0; width: 100%; }

        @media (max-width: 1199.98px) {
            .nav-col { gap: 20px; }
            .header-inner { padding: 0 20px; }
            .nav-col .nav-link-custom { font-size: 14px; }
        }
        @media (max-width: 991.98px) {
            .nav-col { display: none; }
            .header-cta { display: none; }
            .navbar-toggler-custom { display: block; }
            .mobile-nav-panel { display: block; }
            .hero-section { min-height: 0; padding: 70px 0; }
            .hero-info-strip { margin-top: 40px; gap: 20px; flex-direction: column; align-items: flex-start; }
            .project-wrap { flex-direction: column; gap: 30px; }
            .mt-md-0 { margin-top: 24px; }
            .feature-list-vertical { margin-top: 24px; }
            .stat-col { border-left: 0; padding: 10px; }
            .section-padding { padding: 64px 0; }
        }
        @media (max-width: 575.98px) {
            .hero-title { font-size: 32px; }
            .hero-subtitle { font-size: 16px; }
            .footer-bottom { flex-direction: column; justify-content: center; }
            .footer-brand { margin-bottom: 12px; }
        }

/* roulang page: category1 */
:root {
            --bg: #F8F7F4;
            --surface: #FFFFFF;
            --surface-soft: #EFEDE8;
            --ink: #191D23;
            --muted: #5A616B;
            --text-weak: #9AA1A8;
            --line: #E5E1DA;
            --line-strong: #D8D4CB;
            --brand: #165E73;
            --brand-deep: #0D3A49;
            --accent: #E3653F;
            --footer-bg: #14181C;
            --radius: 6px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.06);
            --shadow-header: 0 2px 8px rgba(0, 0, 0, 0.04);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-num: Inter, "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--ink);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .22s ease, background-color .22s ease, border-color .22s ease, box-shadow .22s ease, transform .22s ease;
        }

        a:hover {
            color: var(--brand-deep);
        }

        .container {
            max-width: 1180px;
        }

        .section-white {
            background: var(--surface);
        }

        .section-soft {
            background: var(--surface-soft);
        }

        .section-block {
            padding: 96px 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--ink);
            line-height: 1.3;
            margin-top: 0;
        }

        h2 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
        }

        /* ===== header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--line);
            transition: box-shadow .25s ease;
            backdrop-filter: blur(8px);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-header);
        }

        .header-inner {
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand-logo {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--ink);
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            border: 1px solid rgba(22, 94, 115, .35);
            border-radius: 10px;
            background: rgba(22, 94, 115, .07);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            line-height: 1;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.01em;
            white-space: nowrap;
            color: var(--ink);
        }

        .desktop-nav {
            display: flex;
            justify-content: center;
            margin: 0 auto;
        }

        .nav-col {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink);
            border-bottom: 2px solid transparent;
            margin-bottom: -1px;
            white-space: nowrap;
        }

        .nav-link-custom:hover {
            color: var(--brand);
        }

        .active-link,
        .active-link:hover {
            color: var(--brand);
            border-bottom-color: var(--brand);
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-search {
            position: relative;
            width: 190px;
        }

        .header-search > i {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 13px;
            color: var(--text-weak);
            pointer-events: none;
            z-index: 1;
        }

        .search-input {
            width: 100%;
            height: 38px;
            border: 1px solid var(--line-strong);
            border-radius: var(--radius);
            padding: 0 12px 0 34px;
            background: #fff;
            font-size: 14px;
            color: var(--ink);
            outline: none;
            transition: border-color .2s, box-shadow .2s;
        }

        .search-input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(22, 94, 115, .12);
        }

        .custom-dropdown {
            border: 1px solid var(--line);
            border-radius: 8px;
            padding: 8px;
            box-shadow: var(--shadow-card);
        }

        .custom-dropdown .dropdown-item {
            border-radius: 6px;
            padding: 8px 14px;
            font-size: 14px;
            color: var(--ink);
        }

        .custom-dropdown .dropdown-item:hover {
            background: var(--surface-soft);
            color: var(--brand);
        }

        .mobile-trigger {
            display: none !important;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            color: var(--ink);
            font-size: 17px;
            padding: 0;
        }

        .mobile-trigger:focus {
            outline: none;
            border-color: var(--brand);
        }

        .mobile-nav-panel {
            background: #fff;
            border-top: 1px solid var(--line);
        }

        .mobile-search {
            display: flex;
            gap: 8px;
            margin-bottom: 14px;
        }

        .mobile-search .search-input {
            flex: 1;
            padding-left: 14px;
            height: 42px;
        }

        .mobile-links {
            display: flex;
            flex-direction: column;
            padding: 6px 0 18px;
        }

        .mobile-links a {
            padding: 12px 4px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ink);
            border-bottom: 1px solid var(--line);
        }

        .mobile-links a:last-child {
            border-bottom: 0;
        }

        .mobile-links a.active-link,
        .mobile-links a:hover {
            color: var(--brand);
        }

        /* ===== buttons ===== */
        .btn {
            border-radius: var(--radius);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            padding: 10px 24px;
            transition: background-color .22s ease, color .22s ease, border-color .22s ease, box-shadow .22s ease, transform .2s ease;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--brand-deep);
            border-color: var(--brand-deep);
            color: #fff;
            box-shadow: 0 6px 16px rgba(15, 70, 86, .12);
        }

        .btn-outline-brand {
            background: transparent;
            border: 1px solid var(--brand);
            color: var(--brand);
        }

        .btn-outline-brand:hover {
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
        }

        .btn-white {
            background: #fff;
            border: 1px solid #fff;
            color: var(--brand-deep);
        }

        .btn-white:hover {
            background: #f0f1f2;
            border-color: #fff;
            color: var(--brand-deep);
            box-shadow: 0 6px 18px rgba(255, 255, 255, .14);
        }

        .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-weight: 600;
            color: var(--brand);
            font-size: 15px;
            border-bottom: 1px solid rgba(22, 94, 115, .3);
            padding-bottom: 2px;
        }

        .arrow-link i {
            transition: transform .2s ease;
        }

        .arrow-link:hover {
            color: var(--brand-deep);
            border-bottom-color: var(--brand-deep);
        }

        .arrow-link:hover i {
            transform: translateX(3px);
        }

        /* ===== category hero ===== */
        .category-hero {
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--line);
            background: var(--surface-soft) url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            overflow: hidden;
            padding: 52px 0;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(248, 247, 244, .97) 0%, rgba(248, 247, 244, .86) 55%, rgba(248, 247, 244, .62) 100%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .cat-kicker {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand);
            margin-bottom: 16px;
        }

        .cat-kicker::before {
            content: "";
            width: 30px;
            height: 1px;
            background: var(--accent);
            flex-shrink: 0;
        }

        .category-hero h1 {
            font-size: 46px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .category-hero h1 .accent {
            color: var(--accent);
        }

        .category-hero p {
            max-width: 620px;
            font-size: 16px;
            color: var(--muted);
            margin-bottom: 22px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
        }

        .cat-breadcrumb .breadcrumb {
            margin: 0;
            justify-content: flex-end;
            background: transparent;
            padding: 0;
        }

        .cat-breadcrumb .breadcrumb-item {
            font-size: 13px;
            color: var(--muted);
        }

        .cat-breadcrumb .breadcrumb-item a {
            color: var(--muted);
            text-decoration: none;
        }

        .cat-breadcrumb .breadcrumb-item a:hover {
            color: var(--brand);
        }

        .cat-breadcrumb .breadcrumb-item.active {
            color: var(--ink);
        }

        .cat-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            color: var(--text-weak);
        }

        /* section head */
        .section-head {
            margin-bottom: 52px;
        }

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

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .1em;
            text-transform: uppercase;
            color: var(--brand);
            margin-bottom: 16px;
        }

        .eyebrow::after,
        .section-head-center .eyebrow::after {
            content: "";
            width: 30px;
            height: 1px;
            background: var(--accent);
        }

        .section-title {
            font-size: 34px;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-lead {
            font-size: 16px;
            line-height: 1.8;
            color: var(--muted);
            max-width: 760px;
        }

        /* service list */
        .service-row {
            border-bottom: 1px solid var(--line);
            padding: 38px 0;
            transition: background .22s ease;
        }

        .service-row:first-child {
            border-top: 1px solid var(--line);
        }

        .service-index {
            display: inline-flex;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(22, 94, 115, .25);
            border-radius: 50%;
            color: var(--brand);
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 14px;
            font-feature-settings: "tnum";
        }

        .service-media {
            overflow: hidden;
            border-radius: 4px;
            background: var(--surface-soft);
        }

        .service-media img {
            width: 100%;
            aspect-ratio: 3/2;
            object-fit: cover;
            display: block;
            transition: transform .45s ease;
        }

        .service-row:hover .service-media img {
            transform: scale(1.03);
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(22, 94, 115, .08);
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .service-info h3 {
            font-size: 21px;
            margin-bottom: 8px;
        }

        .service-info p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 14px;
            max-width: 700px;
        }

        .arrow-link-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
        }

        .arrow-link-sm i {
            transition: transform .2s ease;
        }

        .arrow-link-sm:hover {
            color: var(--brand-deep);
        }

        .arrow-link-sm:hover i {
            transform: translateX(4px);
        }

        /* feature split */
        .feature-visual {
            position: relative;
            overflow: hidden;
            border-radius: 6px;
            background: var(--surface-soft);
        }

        .feature-visual img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            display: block;
        }

        .feature-content-title {
            font-size: 24px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .feature-content-lead {
            color: var(--muted);
            margin-bottom: 24px;
        }

        .feature-point {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-top: 1px solid var(--line);
        }

        .feature-point:last-of-type {
            border-bottom: 1px solid var(--line);
        }

        .icon-circle {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border: 1px solid var(--brand);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 16px;
            background: rgba(22, 94, 115, .05);
        }

        .feature-point h3 {
            font-size: 17px;
            margin: 0 0 4px;
        }

        .feature-point p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* stat strip */
        .stat-row {
            margin-top: 56px;
        }

        .stat-cell {
            padding: 26px 24px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            text-align: center;
            min-height: 150px;
        }

        .stat-number {
            display: block;
            font-family: var(--font-num);
            font-size: 42px;
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
            font-feature-settings: "tnum";
            margin-bottom: 10px;
        }

        .stat-caption {
            font-size: 14px;
            color: var(--muted);
        }

        /* scenes */
        .scene-card {
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 30px;
            transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }

        .scene-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .scene-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: rgba(22, 94, 115, .08);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .scene-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }

        .scene-card p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 0;
        }

        /* process */
        .process-intro-title {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .process-intro p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .process-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .process-item {
            position: relative;
            min-height: 78px;
            padding-left: 78px;
            padding-bottom: 28px;
        }

        .process-item::before {
            content: "";
            position: absolute;
            left: 18px;
            top: 40px;
            bottom: 0;
            width: 1px;
            background: rgba(22, 94, 115, .22);
        }

        .process-item:last-child::before {
            display: none;
        }

        .process-step {
            position: absolute;
            left: 0;
            top: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            box-shadow: 0 0 0 5px rgba(22, 94, 115, .07);
        }

        .process-item h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .process-item p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-custom .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--line);
            border-radius: 0 !important;
        }

        .faq-custom .accordion-item:first-child {
            border-top: 1px solid var(--line);
        }

        .faq-custom .accordion-button {
            background: transparent;
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            padding: 22px 6px;
            box-shadow: none;
            border-radius: 0;
        }

        .faq-custom .accordion-button:not(.collapsed) {
            color: var(--brand);
            background: transparent;
        }

        .faq-custom .accordion-button::after {
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            font-size: 13px;
            background-image: none;
            width: auto;
            height: auto;
            transition: transform .3s ease;
        }

        .faq-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-custom .accordion-body {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 30px 24px 6px;
        }

        /* CTA band */
        .cta-band {
            background: var(--brand-deep);
            color: #fff;
            padding: 58px 0;
        }

        .cta-band h2 {
            color: #fff;
            font-size: 30px;
            margin-bottom: 10px;
        }

        .cta-band p {
            color: rgba(255, 255, 255, .78);
            max-width: 720px;
            margin-bottom: 24px;
        }

        /* contact */
        .contact-section {
            padding: 96px 0;
        }

        .contact-intro h2 {
            margin-bottom: 14px;
        }

        .contact-intro > p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .contact-item {
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .contact-item i {
            color: var(--brand);
            font-size: 17px;
            margin-top: 5px;
        }

        .contact-item .d-block {
            font-size: 14px;
            color: var(--muted);
        }

        .contact-item strong {
            color: var(--ink);
            font-weight: 600;
        }

        .contact-form-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 34px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
        }

        .form-control {
            background: #fff;
            border: 1px solid var(--line-strong);
            border-radius: var(--radius);
            color: var(--ink);
            font-size: 15px;
            padding: 11px 14px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-control:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(22, 94, 115, .1);
            color: var(--ink);
        }

        textarea.form-control {
            min-height: 130px;
            resize: vertical;
        }

        .form-note {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 12px;
        }

        /* footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, .72);
            padding: 72px 0 30px;
            font-size: 14px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, .25);
            background: rgba(255, 255, 255, .06);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, .64);
            max-width: 420px;
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }

        .site-footer h3 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-list li {
            margin-bottom: 10px;
        }

        .footer-list a {
            color: rgba(255, 255, 255, .6);
            text-decoration: none;
            font-size: 14px;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-list a:hover {
            color: #fff;
            padding-left: 2px;
        }

        .badge-custom {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            padding: 6px 14px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            margin-top: 60px;
            padding-top: 22px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .48);
        }

        /* responsive */
        @media (max-width: 991.98px) {
            .desktop-nav {
                display: none;
            }

            .mobile-trigger {
                display: inline-flex !important;
            }

            .header-search {
                display: none !important;
            }

            .brand-text {
                font-size: 18px;
            }

            .category-hero {
                padding: 44px 0;
                min-height: auto;
            }

            .category-hero h1 {
                font-size: 40px;
            }

            .cat-breadcrumb {
                justify-content: flex-start;
            }

            .section-block,
            .contact-section {
                padding: 64px 0;
            }

            h2 {
                font-size: 30px;
            }

            .feature-point {
                gap: 14px;
            }

            .process-item {
                padding-left: 66px;
            }

            .stat-cell {
                min-height: 130px;
            }
        }

        @media (max-width: 767.98px) {
            .header-inner {
                height: 62px;
            }

            .section-title,
            .section-head h2,
            .contact-intro h2 {
                font-size: 28px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .service-row {
                padding: 30px 0;
            }

            .service-info {
                margin-top: 14px;
            }

            .service-media img {
                aspect-ratio: 3/2;
            }

            .stat-row {
                margin-top: 40px;
                gap: 12px;
            }

            .stat-cell {
                padding: 20px 14px;
                min-height: 118px;
            }

            .stat-number {
                font-size: 34px;
            }

            .process-item {
                padding-left: 60px;
            }

            .process-item::before {
                left: 15px;
            }

            .process-step {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .form-contact-card {
                padding: 24px;
            }

            .contact-form-card {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .category-hero p {
                font-size: 15px;
            }

            .hero-actions {
                align-items: flex-start;
                flex-direction: column;
            }

            .service-row .col-6 {
                flex: 0 0 auto;
                width: 42%;
            }

            .badge-custom {
                padding: 4px 10px;
            }

            .footer-bottom {
                text-align: left;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }

            img {
                transition: none;
            }
        }

/* roulang page: article */
:root{
  --bg:#F8F7F4;
  --card-bg:#FFFFFF;
  --section-bg:#EFEDE8;
  --ink:#191D23;
  --text:#5A616B;
  --muted:#9AA1A8;
  --line:#E5E1DA;
  --primary:#165E73;
  --primary-dark:#0D3A49;
  --accent:#E3653F;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --shadow-sm:0 2px 8px rgba(0,0,0,.04);
  --shadow-hover:0 6px 18px rgba(0,0,0,.06);
  --radius:6px;
  --radius-lg:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark)}
ul,ol,dl,dd,figure,blockquote,p,h1,h2,h3,h4,h5,h6{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{padding-left:20px;padding-right:20px;max-width:1180px}
h1,h2,h3,h4,h5,h6{line-height:1.35;color:var(--ink)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1090;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.header-container{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;min-width:0;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.brand-logo:hover{color:var(--ink)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,94,115,.08);
  border:1px solid rgba(22,94,115,.22);
  color:var(--primary);
  font-size:16px;
  border-radius:50%;
}
.header-center{display:none;flex:1;justify-content:center;min-width:0}
.nav-col{display:flex;align-items:center;justify-content:center;gap:6px;height:70px}
.nav-link-custom{
  display:inline-flex;align-items:center;gap:6px;
  position:relative;
  padding:0 12px;
  font-size:15px;font-weight:500;
  color:var(--ink);line-height:70px;
  white-space:nowrap;
}
.nav-link-custom::after{
  content:"";position:absolute;left:14px;right:auto;bottom:12px;
  width:0;height:2px;background:var(--primary);
  border-radius:2px;
  transition:width .25s ease;
}
.nav-link-custom:hover,.nav-link-custom.active-link{color:var(--primary)}
.nav-link-custom:hover::after,.nav-link-custom.active-link::after{width:calc(100% - 28px)}
.nav-col .dropdown{position:relative}
.header-tools{display:flex;align-items:center;justify-content:flex-end;gap:10px;min-width:0}
.tool-search{
  display:none;
  align-items:center;
  background:#F7F6F3;
  border:1px solid #D8D4CB;
  border-radius:var(--radius);
  height:40px;
  padding:0 6px 0 14px;
  width:180px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.tool-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,94,115,.08)}
.search-input{flex:1;border:0;background:transparent;outline:none;font-size:13px;color:var(--ink);width:100%;min-width:0}
.search-submit{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:0;background:transparent;color:var(--muted);cursor:pointer;transition:color .2s ease}
.search-submit:hover{color:var(--primary)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--primary);border:1px solid var(--primary);
  color:#fff;font-weight:600;font-size:14px;line-height:1;
  height:42px;padding:0 26px;border-radius:var(--radius);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.btn-brand:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;box-shadow:0 6px 16px rgba(15,70,86,.14);transform:translateY(-1px)}
.btn-brand:active{transform:translateY(0)}
.btn-dark-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.35);
  height:44px;padding:0 28px;font-weight:600;font-size:15px;line-height:1;border-radius:var(--radius);
  transition:background .25s ease,transform .25s ease;
}
.btn-dark-soft:hover{color:#fff;background:rgba(255,255,255,.2);transform:translateY(-1px)}
.btn-outline-custom{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;border:1px solid #D5D1C8;
  color:var(--ink);font-weight:600;font-size:15px;
  height:44px;padding:0 28px;border-radius:var(--radius);
  transition:all .25s ease;
}
.btn-outline-custom:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-nav{height:38px;padding:0 20px;font-size:14px}
.custom-dropdown{border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 24px rgba(0,0,0,.07);padding:8px;min-width:150px}
.custom-dropdown .dropdown-item{font-size:14px;font-weight:500;color:var(--ink);padding:9px 14px;border-radius:var(--radius)}
.custom-dropdown .dropdown-item:hover{background:#F2F1EE;color:var(--primary)}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.mobile-nav-panel{border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-nav{display:block}
.mobile-nav-link{display:block;padding:13px 0;font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid rgba(229,225,218,.65)}
.mobile-nav-link:hover{color:var(--primary);padding-left:6px}
.mobile-search-wrap{display:flex;align-items:center;background:#F7F6F3;border:1px solid #D8D4CB;border-radius:var(--radius);height:44px;margin-top:16px;padding:0 6px 0 14px}
.mobile-search-wrap input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.mobile-search-wrap button{border:0;background:transparent;color:var(--muted);padding:0 12px;cursor:pointer}
.mobile-search-wrap button:hover{color:var(--primary)}

/* ===== Article Head ===== */
.article-page-head{
  position:relative;
  background-color:#ECEAE5;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  padding:66px 0 68px;
  overflow:hidden;
  border-bottom:1px solid rgba(0,0,0,.04);
}
.article-page-head::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(248,247,244,.98) 0%,rgba(248,247,244,.95) 48%,rgba(248,247,244,.72) 100%);
}
.article-page-head .container{position:relative;z-index:2}
.breadcrumb-new{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:26px}
.breadcrumb-new a{color:var(--muted)}
.breadcrumb-new a:hover{color:var(--primary)}
.breadcrumb-new .sep{color:#C7C2BB}
.breadcrumb-new .active{color:var(--text);font-weight:500;display:inline-block;max-width:300px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;vertical-align:bottom}
.article-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(22,94,115,.09);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.08em;
  padding:5px 12px;border-radius:999px;
  margin-bottom:18px;
}
.article-head-title{font-size:34px;line-height:1.38;font-weight:800;color:var(--ink);margin-bottom:16px;max-width:980px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;color:var(--muted);font-size:13px;margin-top:8px}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-source{color:var(--text);font-weight:500}

/* ===== Article Main ===== */
.article-content-wrap{padding:64px 0 72px}
.article-outer{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:52px 56px}
.article-body{font-size:16px;color:#2B313A;line-height:1.9}
.article-body p{margin:1.35em 0}
.article-body h2{font-size:24px;font-weight:700;color:var(--ink);margin:2.2em 0 .7em;line-height:1.4;padding-left:14px;border-left:3px solid var(--primary)}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:1.8em 0 .6em}
.article-body h4{font-size:16px;font-weight:700;margin:1.5em 0 .5em}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(22,94,115,.35)}
.article-body a:hover{color:var(--primary-dark);text-decoration-color:var(--primary-dark)}
.article-body ul{margin:1.2em 0;padding-left:1.4em}
.article-body ol{margin:1.2em 0;padding-left:1.4em}
.article-body li{margin:.55em 0;line-height:1.85}
.article-body img{border-radius:var(--radius);max-width:100%;height:auto;margin:1.4em 0}
.article-body blockquote{
  margin:1.8em 0;padding:16px 22px;
  border-left:3px solid var(--primary);
  background:#F3F5F4;color:var(--text);
  border-radius:0 var(--radius) var(--radius) 0;
  font-size:15px;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:#F7F6F3;font-weight:600;color:var(--ink)}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-bottom-bar{margin-top:48px;padding-top:30px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px}
.article-bottom-tag{color:var(--muted);font-size:13px}
.article-bottom-tag span{color:var(--text);font-weight:500}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14px;color:var(--primary);border:0;background:transparent;padding:0;cursor:pointer}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover{color:var(--primary-dark)}
.link-arrow:hover i{transform:translateX(4px)}

/* ===== Related Panel ===== */
.article-related-section{padding:0 0 72px}
.section-heading-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.eyebrow-num{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.12em;color:var(--primary);font-weight:700;text-transform:uppercase}
.eyebrow-num::after{content:"";height:1px;width:40px;background:var(--primary);opacity:.45}
.section-title{font-size:28px;font-weight:700;color:var(--ink);margin:10px 0 0;line-height:1.3}
.related-card{
  display:block;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 30px 26px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(22,94,115,.3)}
.related-icon{
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,94,115,.08);color:var(--primary);font-size:17px;
  margin-bottom:18px;
}
.related-card-title{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;transition:color .2s ease}
.related-card p{font-size:14px;color:var(--text);line-height:1.8;margin:0 0 22px}
.related-card-link{font-size:14px;font-weight:600;color:var(--primary)}
.related-card:hover .related-card-title{color:var(--primary)}
.related-card-link i{transition:transform .2s ease}
.related-card:hover .related-card-link i{transform:translateX(4px)}

/* ===== CTA ===== */
.cta-section{padding:0 0 80px}
.cta-band{
  position:relative;background:var(--primary-dark);
  border-radius:var(--radius-lg);padding:46px 52px;
  color:#fff;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;
  width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.04);
}
.cta-band-content{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px}
.cta-band h2{color:#fff;font-size:24px;font-weight:700;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;max-width:680px;margin:0}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--primary);
  border:1px solid #fff;
  height:46px;padding:0 30px;font-weight:700;font-size:15px;line-height:1;border-radius:var(--radius);
  transition:background .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-white:hover{background:#F0EFEB;color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 22px rgba(0,0,0,.12)}
.cta-link{display:inline-flex;flex-direction:column;color:rgba(255,255,255,.85);font-size:14px;border:0;background:transparent;cursor:pointer}
.cta-link span{font-weight:600}
.cta-link small{font-size:12px;color:rgba(255,255,255,.55)}

/* ===== Not Found ===== */
.not-found-panel{max-width:720px;margin:80px auto;padding:60px 40px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg)}
.not-found-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;background:rgba(227,101,63,.1);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:23px}
.not-found-panel h1{font-size:25px;font-weight:700;color:var(--ink);margin-bottom:12px}
.not-found-panel p{color:var(--text);font-size:15px;margin-bottom:28px}
.not-found-panel .btn-brand{min-width:160px}

/* ===== Footer ===== */
.site-footer{background:#14181C;color:#B9C0C7;font-size:14px}
.site-footer .container{padding-top:68px;padding-bottom:20px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:#fff;letter-spacing:.02em;margin-bottom:20px}
.footer-mark{width:38px;height:38px;flex:0 0 38px;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#fff;border-radius:50%;font-size:16px}
.footer-desc{color:#9FA8B0;font-size:14px;line-height:1.9;max-width:400px}
.badge-custom{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;font-size:12px;font-weight:500}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin-bottom:10px}
.footer-list a{color:#C7CDD4;font-size:14px;display:inline-flex;align-items:center;transition:color .2s ease,padding-left .2s ease}
.footer-list a:hover{color:#fff;padding-left:5px}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:20px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:50px;
  padding:24px 0 6px;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;
  color:#7F8890;font-size:13px;
}
.footer-bottom a{color:#B9C0C7}
.footer-bottom a:hover{color:#fff}
.footer-corner{color:#7F8890}

/* ===== Responsive ===== */
@media (min-width:1200px){
  .header-center{display:flex}
  .tool-search{display:flex}
  .nav-toggle{display:none!important}
  .mobile-nav-panel{display:none!important}
}
@media (min-width:1201px) and (max-width:1360px){
  .tool-search{width:150px}
  .tool-search .search-input{padding-left:8px;width:86px}
}
@media (max-width:1199.98px){
  .header-center{display:none}
  .header-tools .btn-nav{padding:0 16px}
}
@media (max-width:991.98px){
  .article-head-title{font-size:30px}
  .article-outer{padding:38px 32px}
  .cta-band{padding:38px 32px}
}
@media (max-width:767.98px){
  .site-footer .container{padding-top:52px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:575.98px){
  .brand-name{font-size:16px}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:15px}
  .header-container{height:64px;gap:8px}
  .header-tools{gap:8px}
  .btn-nav{height:38px;padding:0 14px;font-size:13px}
  .nav-toggle{width:40px;height:40px}
  .article-page-head{padding:50px 0 54px}
  .article-head-title{font-size:25px}
  .article-content-wrap{padding:38px 0 50px}
  .article-outer{padding:26px 20px;border-radius:var(--radius)}
  .article-body{font-size:15px;line-height:1.85}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-meta{gap:12px;font-size:12px}
  .section-title{font-size:23px}
  .cta-band{padding:36px 24px}
  .cta-band h2{font-size:20px}
  .related-card{padding:24px 22px}
  .not-found-panel{margin:44px auto;padding:40px 22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root {
        --bg-body: #F8F7F4;
        --bg-card: #FFFFFF;
        --bg-soft: #EFEDE8;
        --bg-muted: #F1F0EC;
        --text-main: #191D23;
        --text-sub: #5A616B;
        --text-muted: #9AA1A8;
        --border-color: #E5E1DA;
        --border-light: #E7E3DD;
        --brand-primary: #165E73;
        --brand-deep: #0D3A49;
        --accent-color: #E3653F;
        --radius-sm: 4px;
        --radius-card: 6px;
        --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.06);
        --transition-base: 180ms ease;
        --content-width: 1180px;
        --section-pad: 100px;
    }

    * {
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--bg-body);
        color: var(--text-main);
        line-height: 1.75;
        font-size: 16px;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color var(--transition-base);
    }
    button,
    input,
    textarea {
        font-family: inherit;
    }
    .container {
        max-width: var(--content-width);
        padding-left: 20px;
        padding-right: 20px;
    }
    @media (max-width: 991px) {
        :root {
            --section-pad: 70px;
        }
    }
    @media (max-width: 576px) {
        :root {
            --section-pad: 56px;
        }
    }

    /* ===== Header & Navigation ===== */
    .site-header {
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        height: 70px;
        position: sticky;
        top: 0;
        z-index: 1030;
        transition: box-shadow 200ms ease;
    }
    .site-header.scrolled {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    .header-inner {
        height: 70px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-main);
        font-weight: 700;
        font-size: 19px;
        letter-spacing: -0.2px;
        white-space: nowrap;
        border-radius: var(--radius-card);
    }
    .brand-logo i {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 2px solid var(--brand-primary);
        color: var(--brand-primary);
        border-radius: 50%;
        font-size: 16px;
    }
    .nav-col {
        display: flex;
        align-items: center;
        gap: 28px;
    }
    .nav-link-custom {
        position: relative;
        display: inline-block;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-main);
        line-height: 70px;
        padding: 0 2px;
        background: transparent;
        border: 0;
    }
    .nav-link-custom:after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 0;
        height: 2px;
        background: var(--brand-primary);
        transition: width 200ms ease;
    }
    .nav-link-custom:hover {
        color: var(--brand-primary);
    }
    .nav-link-custom:hover:after {
        width: 100%;
    }
    .nav-link-custom.active-link {
        color: var(--brand-primary);
        font-weight: 600;
    }
    .nav-link-custom.active-link:after {
        width: 100%;
    }
    .custom-dropdown {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-card);
        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
        padding: 8px;
        min-width: 150px;
    }
    .custom-dropdown .dropdown-item {
        font-size: 14px;
        color: var(--text-main);
        border-radius: 4px;
        padding: 9px 14px;
    }
    .custom-dropdown .dropdown-item:hover {
        background: var(--bg-soft);
        color: var(--brand-primary);
    }
    .header-search {
        display: flex;
        align-items: center;
        border: 1px solid #D8D4CB;
        border-radius: 6px;
        background: #fff;
        padding: 0 12px;
        height: 40px;
        width: 190px;
        transition: border-color 180ms ease, box-shadow 180ms ease;
    }
    .header-search:focus-within {
        border-color: var(--brand-primary);
        box-shadow: 0 0 0 3px rgba(22, 94, 115, 0.10);
    }
    .header-search i {
        color: var(--text-muted);
        font-size: 14px;
        margin-right: 8px;
    }
    .header-search input {
        border: 0;
        outline: 0;
        background: transparent;
        font-size: 14px;
        width: 100%;
        color: var(--text-main);
    }
    .header-search input::placeholder {
        color: var(--text-muted);
    }
    .header-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 42px;
        padding: 0 22px;
        background: var(--brand-primary);
        color: #fff;
        border: 0;
        border-radius: 6px;
        font-size: 15px;
        font-weight: 600;
        white-space: nowrap;
        cursor: pointer;
        transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
    }
    .header-cta:hover {
        background: var(--brand-deep);
        box-shadow: 0 6px 16px rgba(15, 70, 86, 0.12);
        color: #fff;
        transform: translateY(-1px);
    }
    .nav-toggle {
        display: none;
        background: transparent;
        border: 1px solid var(--border-color);
        border-radius: 6px;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: var(--text-main);
        cursor: pointer;
    }

    /* Mobile nav panel */
    .mobile-nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: #fff;
        z-index: 1020;
        padding: 30px 20px;
        overflow-y: auto;
        transform: translateX(-102%);
        transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
    }
    .mobile-nav.show-mobile {
        transform: translateX(0);
    }
    .mobile-nav .nav-link-custom {
        display: block;
        line-height: 56px;
        font-size: 17px;
        border-bottom: 1px solid var(--border-light);
    }
    .mobile-nav .btn-close-nav {
        position: absolute;
        top: 18px;
        right: 20px;
        border: 0;
        background: transparent;
        font-size: 22px;
        color: var(--text-main);
    }
    .mobile-search {
        display: flex;
        align-items: center;
        border: 1px solid var(--border-color);
        border-radius: 6px;
        background: #fff;
        padding: 0 12px;
        height: 48px;
        margin-bottom: 16px;
    }
    .mobile-search input {
        border: 0;
        outline: none;
        background: transparent;
        width: 100%;
    }
    @media (max-width: 1199px) {
        .header-search {
            width: 160px;
        }
        .nav-col {
            gap: 18px;
        }
    }
    @media (max-width: 991px) {
        .nav-col,
        .header-search,
        .header-cta {
            display: none;
        }
        .nav-toggle {
            display: inline-flex;
        }
    }

    /* ===== Hero ===== */
    .category-hero {
        position: relative;
        background-color: var(--bg-soft);
        background-image: linear-gradient(rgba(248,247,244,0.92), rgba(239,237,232,0.90)), url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        padding: 80px 0 70px;
        border-bottom: 1px solid var(--border-color);
    }
    .category-hero-inner {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 30px;
        flex-wrap: wrap;
    }
    .category-hero h1 {
        font-size: 42px;
        font-weight: 800;
        line-height: 1.2;
        margin: 0 0 16px;
        color: var(--text-main);
    }
    .category-hero h1 span {
        color: var(--brand-primary);
        font-size: 0.82em;
        font-weight: 700;
        display: inline-block;
        margin-left: 8px;
    }
    .category-hero .page-desc {
        font-size: 16px;
        color: var(--text-sub);
        max-width: 640px;
        margin-bottom: 0;
    }
    .breadcrumb-simple {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        background: rgba(255,255,255,0.55);
        border: 1px solid var(--border-color);
        padding: 7px 14px;
        border-radius: 50px;
    }
    .breadcrumb-simple a {
        color: var(--text-sub);
    }
    .breadcrumb-simple a:hover {
        color: var(--brand-primary);
    }
    @media (max-width: 768px) {
        .category-hero {
            padding: 60px 0 50px;
        }
        .category-hero h1 {
            font-size: 32px;
        }
    }

    /* ===== Title block ===== */
    .section-head {
        margin-bottom: 48px;
    }
    .eyebrow {
        font-size: 12px;
        letter-spacing: 0.4px;
        color: var(--brand-primary);
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 12px;
        text-transform: uppercase;
        margin-bottom: 14px;
    }
    .eyebrow:after {
        content: "";
        width: 28px;
        height: 2px;
        background: var(--brand-primary);
        display: inline-block;
    }
    .section-head h2 {
        font-size: 34px;
        font-weight: 700;
        line-height: 1.3;
        margin: 0 0 14px;
        letter-spacing: -0.3px;
    }
    .section-head .section-sub {
        color: var(--text-sub);
        font-size: 16px;
        max-width: 640px;
    }
    @media (max-width: 576px) {
        .section-head h2 {
            font-size: 26px;
        }
    }

    /* ===== Directory List ===== */
    .solution-directory {
        background: #FFFFFF;
        padding: var(--section-pad) 0;
    }
    .solution-list {
        display: flex;
        flex-direction: column;
    }
    .solution-item {
        display: grid;
        grid-template-columns: 58px 300px 1fr 40px;
        gap: 24px;
        align-items: center;
        padding: 30px 0;
        border-bottom: 1px solid var(--border-color);
        transition: all 200ms ease;
    }
    .solution-item:first-of-type {
        border-top: 1px solid var(--border-color);
    }
    .solution-item:hover {
        background: rgba(239, 237, 232, 0.28);
    }
    .solution-number {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-muted);
        font-variant-numeric: tabular-nums;
    }
    .solution-thumb {
        border-radius: var(--radius-sm);
        overflow: hidden;
        aspect-ratio: 4 / 3;
        background: var(--bg-soft);
        border: 1px solid var(--border-light);
    }
    .solution-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 240ms ease;
    }
    .solution-item:hover .solution-thumb img {
        transform: scale(1.03);
    }
    .solution-info .solution-cat {
        font-size: 13px;
        color: var(--accent-color);
        font-weight: 600;
        margin-bottom: 5px;
    }
    .solution-info h3 {
        font-size: 21px;
        font-weight: 600;
        margin: 0 0 8px;
        color: var(--text-main);
    }
    .solution-info p {
        color: var(--text-sub);
        font-size: 15px;
        margin: 0;
    }
    .solution-arrow {
        width: 42px;
        height: 42px;
        border: 1px solid var(--border-color);
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--brand-primary);
        cursor: pointer;
        transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
    }
    .solution-item:hover .solution-arrow {
        background: var(--brand-primary);
        border-color: var(--brand-primary);
        color: #fff;
        transform: translateX(3px);
    }
    @media (max-width: 991px) {
        .solution-item {
            grid-template-columns: 38px 200px 1fr 32px;
            gap: 16px;
        }
    }
    @media (max-width: 768px) {
        .solution-item {
            grid-template-columns: 1fr;
            gap: 14px;
            padding: 26px 0;
        }
        .solution-thumb {
            grid-row: auto;
            aspect-ratio: 16 / 9;
            max-width: 100%;
        }
        .solution-number {
            display: none;
        }
        .solution-arrow {
            display: none;
        }
    }

    /* ===== Featured block / service feature ===== */
    .industry-feature {
        background: var(--bg-soft);
        padding: var(--section-pad) 0;
    }
    .feature-card {
        height: 100%;
        background: var(--bg-card);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-card);
        overflow: hidden;
        transition: transform 200ms ease, box-shadow 200ms ease;
        display: flex;
        flex-direction: column;
    }
    .feature-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-card);
        border-color: #CDD9D3;
    }
    .feature-card-img {
        aspect-ratio: 3 / 2;
        overflow: hidden;
        background: var(--bg-soft);
    }
    .feature-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 240ms ease;
    }
    .feature-card:hover .feature-card-img img {
        transform: scale(1.02);
    }
    .feature-card-body {
        padding: 24px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .feature-card-body h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin: 0 0 10px;
    }
    .feature-card-body p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.75;
        flex: 1;
        margin: 0;
    }
    .feature-link {
        margin-top: 18px;
        color: var(--brand-primary);
        font-size: 14px;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .feature-link i {
        transition: transform 180ms ease;
    }
    .feature-link:hover i {
        transform: translateX(3px);
    }

    /* ===== Stats ===== */
    .stats-band {
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 70px 0;
    }
    .stat-cell {
        text-align: center;
        padding: 20px;
        border-left: 1px solid var(--border-color);
    }
    .stat-cell:first-child {
        border-left: 0;
    }
    .stat-number {
        font-size: 48px;
        font-weight: 800;
        letter-spacing: -0.4px;
        color: var(--brand-primary);
        font-variant-numeric: tabular-nums;
        line-height: 1.1;
    }
    .stat-label {
        color: var(--text-sub);
        font-size: 14px;
        margin-top: 12px;
    }
    @media (max-width: 768px) {
        .stat-cell {
            border-left: 0;
            border-bottom: 1px solid var(--border-color);
        }
        .stat-cell:last-child {
            border-bottom: 0;
        }
    }

    /* ===== Work steps ===== */
    .work-process {
        background: #FFFFFF;
        padding: var(--section-pad) 0 100px;
    }
    .process-list {
        list-style: none;
        margin: 0;
        padding: 0;
        position: relative;
    }
    .process-list:before {
        content: "";
        position: absolute;
        left: 12px;
        top: 14px;
        bottom: 14px;
        width: 1px;
        background: var(--border-color);
    }
    .process-item {
        position: relative;
        padding-left: 44px;
        margin-bottom: 36px;
    }
    .process-item:last-child {
        margin-bottom: 0;
    }
    .process-circle {
        position: absolute;
        left: 4px;
        top: 2px;
        width: 18px;
        height: 18px;
        border: 3px solid var(--brand-primary);
        background: #FFFFFF;
        border-radius: 50%;
        z-index: 1;
    }
    .process-item h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 6px;
    }
    .process-item p {
        font-size: 15px;
        color: var(--text-sub);
        margin-bottom: 0;
    }
    .process-side {
        position: sticky;
        top: 100px;
    }

    /* ===== Architecture / Solution structure ===== */
    .architecture-block {
        background: var(--bg-soft);
        padding: var(--section-pad) 0;
    }
    .arch-card {
        height: 100%;
        background: #FFFFFF;
        border: 1px solid var(--border-light);
        border-left: 3px solid var(--brand-primary);
        border-radius: var(--radius-card);
        padding: 28px;
        transition: box-shadow 200ms ease, transform 200ms ease;
    }
    .arch-card:hover {
        box-shadow: var(--shadow-card);
        transform: translateY(-2px);
    }
    .arch-card .arch-index {
        display: inline-flex;
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: rgba(22, 94, 115, 0.08);
        color: var(--brand-primary);
        font-weight: 800;
        font-size: 14px;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
    }
    .arch-card h3 {
        font-size: 19px;
        font-weight: 600;
        margin-bottom: 10px;
    }
    .arch-card p {
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 0;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: #FFFFFF;
        padding: var(--section-pad) 0;
    }
    .faq-wrap {
        max-width: 980px;
        margin: 0 auto;
    }
    .faq-col {
        margin-bottom: 24px;
    }
    .faq-item {
        border-bottom: 1px solid var(--border-color);
    }
    .faq-item:first-child {
        border-top: 1px solid var(--border-color);
    }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        width: 100%;
        background: transparent;
        border: 0;
        padding: 22px 4px;
        font-size: 17px;
        font-weight: 600;
        color: var(--text-main);
        text-align: left;
        cursor: pointer;
    }
    .faq-question .faq-icon {
        width: 24px;
        height: 24px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        color: var(--brand-primary);
        border: 1px solid var(--brand-primary);
        transition: transform 200ms ease, background 200ms ease;
        flex: 0 0 auto;
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
        background: var(--brand-primary);
        color: #fff;
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 220ms ease;
    }
    .faq-answer-inner {
        padding: 0 4px 20px;
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.8;
    }

    /* ===== CTA ===== */
    .cta-band {
        background: var(--brand-deep);
        padding: 70px 0;
    }
    .cta-band h2 {
        font-size: 30px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }
    .cta-band p {
        color: rgba(255,255,255,0.74);
        max-width: 560px;
        margin-bottom: 28px;
    }
    .btn-white {
        background: #FFFFFF;
        color: var(--brand-deep);
        font-weight: 600;
        border: 0;
        border-radius: 6px;
        height: 46px;
        padding: 0 30px;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: all 180ms ease;
    }
    .btn-white:hover {
        background: #EBEAE6;
        color: var(--brand-deep);
        transform: translateY(-2px);
        box-shadow: 0 6px 18px rgba(255,255,255,0.1);
    }
    @media (max-width: 768px) {
        .cta-band {
            text-align: center;
        }
        .cta-band p {
            margin-left: auto;
            margin-right: auto;
        }
        .cta-band h2 {
            font-size: 24px;
        }
    }

    /* ===== Contact block ===== */
    .contact-section {
        background: var(--bg-body);
        padding: var(--section-pad) 0;
    }
    .contact-info-item {
        display: flex;
        gap: 16px;
        margin-bottom: 28px;
    }
    .contact-icon {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        border: 1px solid var(--brand-primary);
        color: var(--brand-primary);
        font-size: 15px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
    }
    .contact-info-item h4 {
        font-size: 15px;
        font-weight: 600;
        margin: 0 0 4px;
    }
    .contact-info-item p {
        color: var(--text-sub);
        font-size: 14px;
        margin: 0;
    }
    .contact-form-card {
        background: #fff;
        border: 1px solid var(--border-light);
        border-radius: var(--radius-card);
        padding: 30px;
    }
    .contact-form-card .form-control {
        border-radius: 6px;
        border: 1px solid #D8D4CB;
        padding: 10px 14px;
        background: #FFFFFF;
        font-size: 15px;
    }
    .contact-form-card .form-control:focus {
        border-color: var(--brand-primary);
        box-shadow: 0 0 0 3px rgba(22, 94, 115, 0.10);
    }
    .btn-primary-custom {
        background: var(--brand-primary);
        color: #fff;
        font-weight: 600;
        border: 0;
        border-radius: 6px;
        height: 46px;
        padding: 0 28px;
        transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
    }
    .btn-primary-custom:hover {
        background: var(--brand-deep);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(15, 70, 86, 0.12);
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #14181C;
        color: rgba(255,255,255,0.7);
        padding: 60px 0 26px;
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 18px;
    }
    .footer-mark {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        border: 2px solid #ffffff90;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        color: #fff;
    }
    .footer-desc {
        font-size: 14px;
        line-height: 1.75;
        margin-bottom: 20px;
        max-width: 400px;
        color: rgba(255,255,255,0.6);
    }
    .site-footer h3 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 20px;
    }
    .footer-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-list li {
        margin-bottom: 12px;
    }
    .footer-list a {
        color: #C7CDD4;
        font-size: 14px;
        transition: color 180ms ease;
    }
    .footer-list a:hover {
        color: #ffffff;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.10);
        margin-top: 40px;
        padding-top: 22px;
        font-size: 13px;
        color: rgba(255,255,255,0.45);
    }
    @media (max-width: 768px) {
        .site-footer {
            padding-top: 44px;
        }
    }

    /* ===== Badge ===== */
    .badge-custom {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        padding: 6px 12px;
        border-radius: 50px;
        font-weight: 500;
    }

    /* ===== Focus state ===== */
    a:focus-visible,
    button:focus-visible,
    .nav-link-custom:focus-visible {
        outline: 2px solid var(--brand-primary);
        outline-offset: 3px;
        border-radius: 4px;
    }

    /* ===== Reduced motion ===== */
    @media (prefers-reduced-motion: reduce) {
        *,
        *:before,
        *:after {
            transition-duration: 0.01ms !important;
            animation-duration: 0.01ms !important;
        }
        html {
            scroll-behavior: auto;
        }
    }

/* roulang page: category3 */
:root {
  --c-bg-page: #F8F7F4;
  --c-card: #FFFFFF;
  --c-soft: #EFEDE8;
  --c-text: #191D23;
  --c-muted: #5A616B;
  --c-weak: #9AA1A8;
  --c-border: #E5E1DA;
  --c-brand: #165E73;
  --c-brand-dark: #0D3A49;
  --c-accent: #E3653F;
  --radius-lg: 10px;
  --radius: 6px;
  --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.06);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-tnum: "Inter", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--c-bg-page);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, p {
  margin: 0;
}

h1 {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--c-text);
}

h2 {
  font-size: 30px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--c-text);
}

h3 {
  font-size: 19px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--c-text);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, textarea, select {
  font-family: inherit;
}

.container {
  max-width: 1180px;
}

.btn {
  border-radius: var(--radius);
  font-weight: 600;
  padding: 10px 22px;
  transition: all 0.22s ease;
}

.btn:focus-visible,
.form-control:focus-visible,
.form-check-input:focus-visible {
  outline: none;
}

.btn-brand {
  background: var(--c-brand);
  border: 1px solid var(--c-brand);
  color: #fff;
}

.btn-brand:hover,
.btn-brand:focus {
  background: var(--c-brand-dark);
  border-color: var(--c-brand-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(15, 70, 86, 0.12);
}

.btn-light-custom {
  background: #fff;
  border: 1px solid #fff;
  color: var(--c-brand-dark);
}

.btn-light-custom:hover,
.btn-light-custom:focus {
  background: #f2f5f4;
  border-color: #f2f5f4;
  color: var(--c-brand-dark);
}

.btn-outline-custom {
  background: transparent;
  border: 1px solid #D5D1C8;
  color: var(--c-text);
}

.btn-outline-custom:hover,
.btn-outline-custom:focus {
  border-color: var(--c-brand);
  color: var(--c-brand);
  background: #fff;
}

.link-arrow {
  color: var(--c-brand);
  font-weight: 600;
  font-size: 15px;
}

.link-arrow i {
  display: inline-block;
  margin-left: 4px;
  transition: transform 0.2s ease;
}

.link-arrow:hover {
  color: var(--c-brand-dark);
}

.link-arrow:hover i {
  transform: translateX(3px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-brand);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  font-feature-settings: "tnum";
}

.eyebrow-num {
  font-family: var(--font-tnum);
}

.eyebrow-line {
  width: 28px;
  height: 1px;
  background: var(--c-brand);
}

.section {
  padding: 94px 0;
}

.section-white {
  background: #fff;
}

.section-soft {
  background: var(--c-soft);
}

.section-head {
  margin-bottom: 48px;
}

.section-head .sec-desc {
  margin-top: 14px;
  max-width: 620px;
  color: var(--c-muted);
  font-size: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
}

.header-top {
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

.header-row {
  display: flex;
  align-items: center;
  min-height: 70px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 800;
  color: var(--c-text);
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(22, 94, 115, 0.35);
  color: var(--c-brand);
  background: #F4F7F6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.brand:hover .brand-mark {
  background: rgba(22, 94, 115, 0.08);
}

.header-nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
  padding: 0 12px;
}

.nav-col {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}

.nav-link-custom {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--c-text);
  border-radius: 4px;
  position: relative;
  font-weight: 500;
  white-space: nowrap;
}

.nav-link-custom:hover {
  color: var(--c-brand);
}

.nav-link-custom.active-link {
  color: var(--c-brand);
  font-weight: 700;
}

.nav-link-custom.active-link::after {
  content: "";
  position: absolute;
  bottom: 1px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--c-brand);
  border-radius: 2px;
}

.header-tools {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 190px;
  height: 40px;
  padding: 0 12px;
  background: #fff;
  border: 1px solid #D8D4CB;
  border-radius: var(--radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.header-search i {
  color: var(--c-weak);
  font-size: 14px;
}

.header-search input {
  background: transparent;
  border: 0;
  outline: none;
  width: 100%;
  font-size: 14px;
  color: var(--c-text);
}

.header-search:focus-within {
  border-color: var(--c-brand);
  box-shadow: 0 0 0 0.18rem rgba(22, 94, 115, 0.08);
}

.header-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  background: #fff;
  border-radius: var(--radius);
  color: var(--c-text);
  margin-left: auto;
}

.custom-dropdown {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 6px;
  min-width: 160px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.custom-dropdown .dropdown-item {
  font-size: 14px;
  border-radius: 4px;
  padding: 8px 12px;
  color: var(--c-text);
}

.custom-dropdown .dropdown-item:hover,
.custom-dropdown .dropdown-item:focus {
  background: rgba(22, 94, 115, 0.06);
  color: var(--c-brand);
}

.custom-dropdown .dropdown-item.active-link {
  background: rgba(22, 94, 115, 0.08);
  color: var(--c-brand);
  font-weight: 600;
}

.mobile-panel {
  background: #fff;
  max-width: 320px;
}

.mobile-panel .offcanvas-header {
  border-bottom: 1px solid var(--c-border);
  padding: 18px 22px;
}

.mobile-panel .offcanvas-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-search {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #D8D4CB;
  border-radius: var(--radius);
  padding: 0 14px;
  height: 44px;
}

.mobile-search input {
  border: 0;
  outline: none;
  width: 100%;
  background: transparent;
  font-size: 15px;
}

.mobile-search i {
  color: var(--c-weak);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  margin-top: 4px;
}

.mobile-nav-label {
  font-size: 13px;
  color: var(--c-weak);
  letter-spacing: 0.06em;
  margin: 8px 0 2px;
  font-weight: 600;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-text);
  border-radius: 6px;
}

.mobile-nav-link:hover,
.mobile-nav-link.active-link {
  background: rgba(22, 94, 115, 0.08);
  color: var(--c-brand);
  font-weight: 600;
}

.page-hero {
  position: relative;
  background-color: #f2f0eb;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(248, 247, 244, 0.97) 0%, rgba(248, 247, 244, 0.88) 55%, rgba(248, 247, 244, 0.5) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 68px 0 40px;
}

.breadcrumb-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--c-weak);
  margin-bottom: 22px;
}

.breadcrumb-wrap a {
  color: var(--c-brand);
}

.breadcrumb-wrap a:hover {
  color: var(--c-brand-dark);
  text-decoration: underline;
}

.breadcrumb-wrap span {
  color: var(--c-weak);
}

.hero-lead {
  margin-top: 22px;
  max-width: 610px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-muted);
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  margin-left: 12px;
}

.hero-visual-inner {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  padding: 9px;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.06);
}

.hero-visual-inner img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  border-radius: 6px;
}

.hero-float {
  position: absolute;
  left: -24px;
  bottom: 28px;
  background: #fff;
  border: 1px solid var(--c-border);
  padding: 12px 16px;
  border-radius: var(--radius);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.07);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
}

.hero-float i {
  color: var(--c-accent);
  font-size: 16px;
}

.hero-meta {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(25, 29, 35, 0.1);
  padding-top: 16px;
  padding-bottom: 16px;
}

.hero-meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px 40px;
}

.hero-meta-list li {
  color: var(--c-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.hero-meta-list li i {
  color: var(--c-brand);
}

.topic-card {
  height: 100%;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  border-color: rgba(22, 94, 115, 0.35);
  box-shadow: var(--shadow-card);
}

.topic-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(22, 94, 115, 0.28);
  color: var(--c-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  background: rgba(22, 94, 115, 0.03);
}

.topic-card h3 {
  margin-top: 18px;
}

.topic-card p {
  margin-top: 10px;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.75;
}

.card-index {
  font-size: 13px;
  color: var(--c-weak);
  font-weight: 700;
  font-family: var(--font-tnum);
}

.audience-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 26px;
  height: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.audience-card:hover {
  border-color: rgba(22, 94, 115, 0.3);
  transform: translateY(-2px);
}

.audience-card i {
  font-size: 20px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(22, 94, 115, 0.08);
  color: var(--c-brand);
}

.audience-card h3 {
  margin-top: 16px;
}

.audience-card p {
  margin-top: 8px;
  color: var(--c-muted);
}

.stat-section {
  background: #fff;
  padding: 72px 0 80px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  padding: 20px 36px;
  text-align: center;
  border-left: 1px solid var(--c-border);
}

.stat-item:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat-item .stat-num {
  font-family: var(--font-tnum);
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--c-brand);
  font-feature-settings: "tnum";
}

.stat-item .stat-label {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-muted);
}

.process-left {
  padding-right: 20px;
}

.process-left h2 {
  margin-bottom: 16px;
}

.process-left p {
  max-width: 360px;
  color: var(--c-muted);
  margin-bottom: 24px;
}

.steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps-list li {
  position: relative;
  padding-bottom: 30px;
  padding-left: 58px;
}

.steps-list li:last-child {
  padding-bottom: 0;
}

.steps-list li::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 38px;
  bottom: 4px;
  width: 1px;
  background: rgba(22, 94, 115, 0.2);
}

.steps-list li:last-child::before {
  display: none;
}

.step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--c-brand);
  background: #fff;
  color: var(--c-brand);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-tnum);
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}

.step-desc {
  color: var(--c-muted);
  max-width: 420px;
  line-height: 1.75;
  font-size: 15px;
}

.principle-row {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.principle-media {
  height: 100%;
  min-height: 350px;
  background-image: url('/assets/images/coverpic/cover-3.webp');
  background-size: cover;
  background-position: center;
}

.principle-body {
  padding: 36px 36px 34px;
}

.principle-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.principle-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--c-border);
}

.principle-list li:last-child {
  border-bottom: 0;
}

.principle-list i {
  color: var(--c-accent);
  font-size: 13px;
  margin-top: 7px;
}

.principle-list strong {
  font-weight: 600;
  display: block;
}

.principle-list span {
  color: var(--c-muted);
}

.faq-panel {
  max-width: 920px;
  margin: 0 auto;
}

.faq-panel .accordion-item {
  background: transparent;
  border: 0;
}

.faq-panel .accordion-item + .accordion-item {
  border-top: 1px solid var(--c-border);
}

.faq-panel .accordion-button {
  background: transparent;
  box-shadow: none;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
  padding: 22px 20px 22px 0;
  border: 0;
  border-radius: 0;
}

.faq-panel .accordion-button::after {
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  background-image: none;
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--c-brand);
  font-size: 13px;
  transition: transform 0.22s ease;
}

.faq-panel .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
}

.faq-panel .accordion-button:focus {
  box-shadow: none;
}

.faq-panel .accordion-body {
  padding: 0 60px 24px 0;
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 15px;
}

.cta-banner {
  background: var(--c-brand-dark);
  color: #fff;
}

.cta-banner-inner {
  padding: 64px 0;
}

.cta-banner h2 {
  color: #fff;
}

.cta-banner p {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 570px;
}

.contact-section {
  background: #fff;
  padding: 94px 0 100px;
}

.contact-section h2 {
  margin-bottom: 16px;
}

.contact-info-desc {
  color: var(--c-muted);
  margin-bottom: 22px;
}

.info-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.info-contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 0;
  border-bottom: 1px solid var(--c-border);
}

.info-contact-list li:last-child {
  border-bottom: 0;
}

.info-contact-icon {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 50%;
  border: 1px solid rgba(22, 94, 115, 0.25);
  color: var(--c-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.info-contact-list .info-contact-title {
  font-weight: 600;
  color: var(--c-text);
}

.info-contact-list .info-contact-content {
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.65;
}

.contact-form-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.04);
  padding: 28px;
}

.contact-form-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-form-card .form-label {
  font-size: 14px;
  color: var(--c-text);
  font-weight: 600;
}

.form-control {
  border-radius: var(--radius);
  border: 1px solid #D8D4CB;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--c-text);
  background: #fff;
}

.form-control:focus {
  border-color: var(--c-brand);
  box-shadow: 0 0 0 0.18rem rgba(22, 94, 115, 0.08);
  color: var(--c-text);
}

.site-footer {
  background: #14181C;
  color: rgba(255, 255, 255, 0.75);
  padding: 76px 0 30px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 21px;
  font-weight: 800;
  margin-bottom: 14px;
}

.footer-mark {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.footer-desc {
  max-width: 360px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  line-height: 1.85;
}

.site-footer h3 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li {
  margin-bottom: 12px;
}

.footer-list li a {
  color: #C7CDD4;
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-list li a:hover {
  color: #fff;
  padding-left: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 54px;
  padding-top: 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.badge-custom {
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  padding: 4px 10px;
  display: inline-flex;
  align-items: center;
}

@media (max-width: 1199.98px) {
  .nav-link-custom {
    padding: 8px 10px;
    font-size: 14px;
  }

  .header-search {
    width: 160px;
  }

  .stat-item {
    padding: 18px 22px;
  }
}

@media (max-width: 991.98px) {
  .section {
    padding: 72px 0;
  }

  .header-nav,
  .header-tools {
    display: none !important;
  }

  .header-toggle {
    display: inline-flex;
  }

  .page-hero {
    background-position: 30% 25%;
  }

  .page-hero::before {
    background: rgba(248, 247, 244, 0.92);
  }

  .hero-inner {
    padding: 52px 0 34px;
  }

  .hero-visual {
    margin-top: 38px;
    max-width: 500px;
  }

  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 32px;
  }

  .stat-item {
    border-left: 0;
    padding: 0 14px;
  }

  .process-left {
    padding-right: 0;
    margin-bottom: 40px;
  }

  .principle-media {
    min-height: 280px;
  }

  .cta-banner-inner {
    padding: 54px 0;
  }

  .contact-section {
    padding: 74px 0 80px;
  }
}

@media (max-width: 767.98px) {
  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 27px;
  }

  .section {
    padding: 60px 0;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-avatar,
  .hero-float {
    left: -10px;
  }

  .faq-panel .accordion-button {
    font-size: 16px;
    padding-right: 44px;
  }

  .faq-panel .accordion-button::after {
    position: absolute;
    right: 4px;
    top: 24px;
  }

  .faq-panel .accordion-body {
    padding-right: 20px;
  }
}

@media (max-width: 575.98px) {
  .hero-meta-list {
    gap: 10px 24px;
  }

  .entity-card,
  .topic-card,
  .audience-card {
    padding: 22px 20px;
  }

  .principle-body {
    padding: 26px 22px;
  }

  .contact-form-card {
    padding: 20px;
  }

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

  .hero-visual-inner {
    margin-right: 8px;
  }
}

/* roulang page: category4 */
:root {
    --page-bg: #F8F7F4;
    --card-bg: #FFFFFF;
    --alt-bg: #EFEDE8;
    --ink: #191D23;
    --ink-2: #5A616B;
    --ink-3: #9AA1A8;
    --line: #E5E1DA;
    --line-2: #D8D4CB;
    --brand: #165E73;
    --brand-dark: #0D3A49;
    --brand-deep: #14181C;
    --accent: #E3653F;
    --radius: 6px;
    --radius-lg: 10px;
    --shadow-card: 0 6px 18px rgba(0,0,0,0.06);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.04);
    --space-section: 108px;
    --space-section-sm: 72px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink);
    background: var(--page-bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.no-scroll {
    overflow: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color .25s ease, border-color .25s ease, background .25s ease;
}

a:hover {
    color: var(--brand-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
}

.container {
    max-width: 1180px;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ink);
}

h1 {
    font-size: 42px;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 32px;
    letter-spacing: -0.015em;
}

h3 {
    font-size: 20px;
    letter-spacing: -0.01em;
}

p {
    margin: 0;
}

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

button {
    border: none;
    background: none;
    font-family: inherit;
    cursor: pointer;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 46px;
    padding: 0 32px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    border: 1px solid transparent;
    transition: background .25s ease, color .25s ease, border-color .25s ease, box-shadow .25s ease, transform .2s ease;
}

.btn-brand {
    background: var(--brand);
    color: #fff;
    border-color: var(--brand);
}

.btn-brand:hover {
    background: var(--brand-dark);
    border-color: var(--brand-dark);
    color: #fff;
    box-shadow: 0 6px 16px rgba(22, 94, 115, 0.18);
    transform: translateY(-1px);
}

.btn-brand:active {
    transform: translateY(0);
}

.btn-outline-light {
    height: 46px;
    padding: 0 30px;
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.62);
    border-radius: var(--radius);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-color: #fff;
}

.btn-header {
    height: 40px;
    padding: 0 20px;
    background: var(--brand);
    color: #fff;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all .25s ease;
}

.btn-header:hover {
    background: var(--brand-dark);
    color: #fff;
}

.btn-line {
    height: 44px;
    padding: 0 20px;
    background: #fff;
    color: var(--ink);
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all .25s ease;
}

.btn-line:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: #fff;
}

.badge-custom {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 28px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(22, 94, 115, 0.08);
    color: var(--brand);
    font-size: 13px;
    line-height: 1;
    white-space: nowrap;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1080;
    width: 100%;
    height: 70px;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow .28s ease, height .28s ease;
}

.site-header.is-scrolled {
    box-shadow: var(--shadow-header);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    flex-shrink: 0;
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    border: 1.5px solid var(--brand);
    background: rgba(22, 94, 115, 0.04);
    font-size: 15px;
    transition: transform .25s ease;
}

.brand:hover .brand-mark {
    transform: translateY(-1px) rotate(-3deg);
}

.brand-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

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

.nav-link-custom {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 40px;
    padding: 0 14px;
    color: var(--ink);
    font-size: 15px;
    font-weight: 500;
    border-radius: 4px;
    transition: color .2s ease, background .2s ease;
}

.nav-link-custom:hover {
    color: var(--brand);
}

.nav-link-custom.active-link {
    color: var(--brand);
    font-weight: 600;
}

.nav-link-custom.active-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 3px;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
}

.custom-dropdown {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 8px;
    min-width: 168px;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.98);
}

.custom-dropdown .dropdown-item {
    border-radius: 5px;
    padding: 9px 12px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    transition: all .2s ease;
}

.custom-dropdown .dropdown-item:hover {
    background: rgba(22,94,115,0.06);
    color: var(--brand);
}

.header-tools {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.header-search {
    position: relative;
    display: flex;
    align-items: center;
}

.header-search i {
    position: absolute;
    left: 13px;
    font-size: 13px;
    color: var(--ink-3);
    pointer-events: none;
}

.header-search input {
    width: 190px;
    height: 40px;
    padding: 0 14px 0 36px;
    background: #F3F1EC;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--ink);
    transition: border .25s ease, background .25s ease, width .25s ease;
}

.header-search input::placeholder {
    color: #9aa1a8;
    font-size: 13px;
}

.header-search input:focus {
    outline: none;
    background: #fff;
    border-color: var(--brand);
    width: 210px;
    box-shadow: 0 0 0 3px rgba(22, 94, 115, 0.1);
}

.nav-toggler {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: border-color .2s ease;
}

.nav-toggler span {
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
}

.nav-toggler[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggler[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.page-hero {
    position: relative;
    padding: 48px 0 48px;
    background: var(--alt-bg);
    border-bottom: 1px solid var(--line);
}

.category-hero {
    background:
        linear-gradient(90deg, rgba(248,247,244,0.94), rgba(248,247,244,0.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}

.breadcrumb-nav {
    margin-bottom: 30px;
}

.breadcrumb-nav ol {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-3);
}

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

.breadcrumb-nav li + li::before {
    content: "/";
    color: #c4c1ba;
    font-size: 12px;
}

.breadcrumb-nav a {
    color: var(--ink-2);
}

.breadcrumb-nav a:hover {
    color: var(--brand);
}

.breadcrumb-nav [aria-current="page"] {
    color: var(--ink);
    font-weight: 500;
}

.page-hero .eyebrow {
    margin-bottom: 14px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-2);
    margin-bottom: 18px;
}

.eyebrow .eyebrow-num {
    font-family: "Inter", Arial, sans-serif;
    font-feature-settings: "tnum";
    color: var(--accent);
    font-weight: 700;
}

.eyebrow::after {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--brand);
}

.hero-title {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.22;
    color: var(--ink);
    margin-bottom: 18px;
}

.hero-title .title-accent {
    color: var(--brand);
    font-weight: 700;
}

.hero-excerpt {
    max-width: 620px;
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.85;
}

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

.section-warm {
    background: var(--alt-bg);
}

.section-white {
    background: #fff;
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 48px;
}

.section-head .section-copy {
    max-width: 520px;
    margin-top: 18px;
    color: var(--ink-2);
    font-size: 15px;
}

.head-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--brand);
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: all .2s ease;
}

.head-link:hover {
    border-bottom-color: var(--brand);
    gap: 12px;
}

/* intro section */
.brand-value-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px;
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease;
}

.brand-value-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.value-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(22,94,115,0.25);
    background: rgba(22,94,115,0.05);
    color: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    margin-bottom: 22px;
}

.brand-value-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.brand-value-card p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 0;
}

/* cover gallery */
.cover-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--card-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.cover-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
    border-color: rgba(22,94,115,0.24);
}

.cover-thumb {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 3 / 2;
    background: var(--alt-bg);
}

.cover-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s ease;
}

.cover-card:hover .cover-thumb img {
    transform: scale(1.03);
}

.cover-thumb .duration {
    position: absolute;
    left: 12px;
    bottom: 12px;
    z-index: 2;
    background: rgba(20,24,28,0.72);
    color: #fff;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
    line-height: 1.4;
}

.cover-body {
    padding: 22px 24px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cover-tag {
    display: inline-flex;
    align-items: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
    background: rgba(22,94,115,0.08);
    height: 26px;
    padding: 0 10px;
    border-radius: 999px;
    align-self: flex-start;
    margin-bottom: 14px;
    line-height: 1;
}

.cover-body h3 {
    margin-bottom: 10px;
    line-height: 1.5;
}

.cover-body h3 a {
    color: var(--ink);
}

.cover-body h3 a:hover {
    color: var(--brand);
}

.cover-body p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 16px;
}

.cover-more {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand);
}

.cover-more i {
    transition: transform .2s ease;
    font-size: 12px;
}

.cover-more:hover {
    color: var(--brand-dark);
}

.cover-more:hover i {
    transform: translateX(3px);
}

/* theme mapping */
.theme-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    background: #fff;
    border: 1px solid var(--line);
    border-left: 3px solid var(--brand);
    border-radius: 8px;
    padding: 30px 28px 24px;
    transition: all .25s ease;
}

.theme-card:hover {
    border-color: rgba(22,94,115,0.28);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.theme-index {
    font-family: "Inter", Arial, sans-serif;
    font-feature-settings: "tnum";
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.04em;
    margin-bottom: 18px;
    display: block;
}

.theme-card h3 {
    margin-bottom: 12px;
}

.theme-card p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.8;
}

.theme-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.tag-mini {
    display: inline-flex;
    align-items: center;
    height: 24px;
    padding: 0 9px;
    font-size: 12px;
    color: var(--ink-2);
    background: var(--alt-bg);
    border-radius: 999px;
    line-height: 1;
}

/* user steps */
.step-wrap {
    counter-reset: stepNum;
}

.step-item {
    counter-increment: stepNum;
    display: flex;
    gap: 22px;
    padding: 26px 0;
    border-bottom: 1px solid var(--line);
}

.step-item:first-child {
    padding-top: 0;
}

.stepNum {
    font-family: "Inter", Arial, sans-serif;
    font-feature-settings: "tnum";
    font-size: 15px;
    font-weight: 700;
    color: var(--brand);
    background: rgba(22,94,115,0.08);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .2s ease, color .2s ease;
}

.step-item:hover .stepNum {
    background: var(--brand);
    color: #fff;
}

.step-content {
    padding-top: 4px;
}

.step-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.8;
}

/* faq */
.faq-shell {
    max-width: 940px;
    margin: 0 auto;
}

.faq-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--line);
}

.faq-item:first-of-type {
    border-top: 1px solid var(--line);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    width: 100%;
    text-align: left;
    padding: 26px 4px 20px;
    color: var(--ink);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    background: transparent;
}

.faq-question:hover {
    color: var(--brand);
}

.faq-question .icon {
    color: var(--brand);
    flex-shrink: 0;
    font-size: 15px;
    transition: transform .3s ease, color .3s ease;
}

.faq-question[aria-expanded="true"] .icon {
    transform: rotate(45deg);
    color: var(--accent);
}

.faq-answer {
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.85;
}

.faq-answer .inner {
    padding: 0 40px 24px 4px;
}

.faq-answer a {
    font-weight: 600;
    color: var(--brand);
}

/* CTA */
.cta-band {
    background: var(--brand-deep);
    color: #fff;
    padding: 76px 0;
    overflow: hidden;
}

.cta-band h2 {
    color: #fff;
    max-width: 640px;
    margin-bottom: 18px;
}

.cta-band p {
    color: rgba(255,255,255,0.78);
    max-width: 560px;
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 0;
}

.cta-action {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.cta-note {
    color: rgba(255,255,255,0.55);
    font-size: 12px;
}

/* footer */
.site-footer {
    background: #14181C;
    color: rgba(255,255,255,0.72);
    padding: 72px 0 0;
}

.site-footer .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 20px;
}

.footer-mark {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: rgba(255,255,255,0.05);
    font-size: 13px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.85;
    color: rgba(255,255,255,0.65);
    max-width: 360px;
}

.site-footer h3 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0;
}

.footer-list li {
    margin-bottom: 10px;
}

.footer-list a {
    color: rgba(255,255,255,0.62);
    font-size: 13px;
    transition: all .2s ease;
}

.footer-list a:hover {
    color: #fff;
    padding-left: 3px;
}

.footer-bottom {
    margin-top: 54px;
    padding: 22px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: rgba(255,255,255,0.45);
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

@media (max-width: 1199.98px) {
    .header-search input {
        width: 150px;
    }

    .header-search input:focus {
        width: 170px;
    }

    .hero-title {
        font-size: 36px;
    }
}

@media (max-width: 991.98px) {
    .section-block {
        padding: 72px 0;
    }

    .site-header {
        height: 64px;
    }

    .nav-col {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 18px 20px 30px;
        background: #fff;
        border-top: 1px solid var(--line);
        overflow-y: auto;
        z-index: 1079;
        box-shadow: 0 16px 40px rgba(0,0,0,0.08);
    }

    .nav-col.show {
        display: flex;
    }

    .nav-link-custom {
        height: 52px;
        border-bottom: 1px solid #F0EDE8;
        font-size: 16px;
        justify-content: space-between;
    }

    .nav-link-custom.active-link::after {
        display: none;
    }

    .nav-link-custom.active-link {
        color: var(--brand);
    }

    .custom-dropdown {
        position: static !important;
        box-shadow: none !important;
        margin-left: 14px;
        margin-bottom: 10px;
        border: none;
        border-left: 2px solid var(--line);
        border-radius: 0;
        padding: 0 0 0 8px;
        min-width: 100% !important;
    }

    .custom-dropdown.show {
        position: static !important;
    }

    .custom-dropdown .dropdown-item {
        padding: 12px 10px;
    }

    .header-tools .header-search,
    .header-tools .btn-header {
        display: none;
    }

    .nav-toggler {
        display: flex;
    }

    .page-hero {
        padding: 40px 0 40px;
    }

    .hero-title {
        font-size: 34px;
    }

    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
        margin-bottom: 40px;
    }

    .cta-action {
        align-items: flex-start;
        margin-top: 30px;
    }
}

@media (max-width: 767.98px) {
    h1 {
        font-size: 30px;
    }

    h2 {
        font-size: 26px;
    }

    .brand-name {
        font-size: 17px;
    }

    .brand-mark {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }

    .section-block {
        padding: 60px 0;
    }

    .page-hero .row {
        row-gap: 18px;
    }

    .theme-card {
        padding: 24px 22px 20px;
    }
}

@media (max-width: 575.98px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-excerpt {
        font-size: 14px;
    }

    .header-search {
        display: none !important;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}