/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b1424;
            --primary-light: #13203a;
            --primary-lighter: #1a2d4a;
            --secondary: #c8a86e;
            --secondary-light: #e0c88a;
            --secondary-dark: #a8894e;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg-body: #070d18;
            --bg-card: #101b2e;
            --bg-section: #0a1220;
            --bg-elevated: #16243c;
            --text-primary: #f0f4f8;
            --text-secondary: #94a6c0;
            --text-muted: #5a6f8e;
            --border-color: #1e3050;
            --border-light: #2a4060;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.4);
            --shadow-glow: 0 0 40px rgba(200,168,110,0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
        }

        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary-light); text-decoration: none; }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        button:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.6rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        p { margin-bottom: 0; color: var(--text-secondary); }
        ::selection { background: var(--secondary); color: var(--primary); }

        /* ===== Container ===== */
        .container { max-width: 1240px; padding: 0 24px; margin: 0 auto; width: 100%; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: rgba(11, 20, 36, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(30, 48, 80, 0.5);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(7, 13, 24, 0.96); box-shadow: var(--shadow-md); }
        .navbar { padding: 0; height: var(--nav-height); }
        .navbar-brand {
            display: flex;
            align-items: center;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            padding: 0;
            margin-right: 2rem;
        }
        .navbar-brand:hover { color: var(--secondary); }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--primary);
            margin-right: 10px;
        }
        .navbar-nav { gap: 0.25rem; }
        .nav-link {
            color: var(--text-secondary) !important;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover { color: var(--text-primary) !important; background: rgba(200, 168, 110, 0.06); }
        .nav-link.active {
            color: var(--secondary) !important;
            background: rgba(200, 168, 110, 0.1);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary);
            border-radius: 1px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)) !important;
            border: none !important;
            color: var(--primary) !important;
            font-weight: 600 !important;
            font-size: 0.85rem !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: 50px !important;
            margin-left: 0.75rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(200, 168, 110, 0.2);
        }
        .nav-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200, 168, 110, 0.3); }
        .navbar-toggler {
            border: 1px solid rgba(200, 168, 110, 0.25);
            background: transparent;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
        }
        .navbar-toggler:focus { box-shadow: 0 0 0 2px rgba(200, 168, 110, 0.3); }
        .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%2394a6c0' stroke-width='2' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(7, 13, 24, 0.98);
                backdrop-filter: blur(24px);
                padding: 1rem;
                border-radius: var(--radius-md);
                margin-top: 0.5rem;
                border: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
            }
            .nav-link.active::after { display: none; }
            .nav-cta-btn { margin-left: 0; margin-top: 0.5rem; display: inline-block; text-align: center; }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            position: relative;
            overflow: hidden;
            background: var(--bg-body);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7,13,24,0.92) 0%, rgba(7,13,24,0.6) 50%, rgba(11,20,36,0.8) 100%);
        }
        .hero-content { position: relative; z-index: 2; padding: 3rem 0; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200, 168, 110, 0.12);
            border: 1px solid rgba(200, 168, 110, 0.2);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--secondary);
            margin-bottom: 1.5rem;
            letter-spacing: 0.3px;
        }
        .hero-badge i { font-size: 0.7rem; }
        .hero-title {
            font-size: clamp(2.2rem, 5.5vw, 4rem);
            font-weight: 700;
            line-height: 1.15;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            letter-spacing: -0.03em;
        }
        .hero-title .highlight { color: var(--secondary); }
        .hero-desc {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: var(--text-secondary);
            max-width: 580px;
            line-height: 1.8;
            margin-bottom: 2.2rem;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            border: none;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 2.2rem;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(200, 168, 110, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(200, 168, 110, 0.35); color: var(--primary); }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--border-light);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(200, 168, 110, 0.05); }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(30, 48, 80, 0.4);
        }
        .hero-stat-item { text-align: left; }
        .hero-stat-item .number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.8rem;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 400px;
        }
        .hero-image-frame {
            position: relative;
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            aspect-ratio: 4/3;
            background: var(--bg-card);
        }
        .hero-image-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .hero-image-frame .overlay-glow {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(200,168,110,0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-floating-badge {
            position: absolute;
            bottom: -12px;
            right: -12px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 0.8rem 1.2rem;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(12px);
        }
        .hero-floating-badge i { color: var(--secondary); font-size: 1.2rem; }
        .hero-floating-badge span { font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; }
        @media (max-width: 991.98px) {
            .hero-section { min-height: auto; padding: 6rem 0 3rem; }
            .hero-visual { min-height: 280px; margin-top: 2rem; }
            .hero-image-frame { max-width: 100%; }
            .hero-stats { gap: 1.5rem; }
        }
        @media (max-width: 576px) {
            .hero-stats { gap: 1rem; }
            .hero-stat-item .number { font-size: 1.4rem; }
            .hero-floating-badge { position: relative; bottom: 0; right: 0; margin-top: 1rem; width: fit-content; }
        }

        /* ===== Section Shared ===== */
        .section-pad { padding: 5rem 0; }
        .section-pad-sm { padding: 3rem 0; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 0.8rem;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 1.5px;
            background: var(--secondary);
        }
        .section-title {
            font-size: clamp(1.6rem, 3.2vw, 2.4rem);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.8;
        }
        .bg-section-alt { background: var(--bg-section); }
        .bg-section-card { background: var(--bg-card); }

        /* ===== Services / Features ===== */
        .service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--secondary), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .service-card:hover { transform: translateY(-6px); border-color: var(--border-light); box-shadow: var(--shadow-md); }
        .service-card:hover::before { opacity: 1; }
        .service-icon {
            width: 52px;
            height: 52px;
            background: rgba(200, 168, 110, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--secondary);
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .service-card:hover .service-icon { background: rgba(200, 168, 110, 0.18); transform: scale(1.05); }
        .service-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.6rem; }
        .service-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover { border-color: var(--border-light); transform: translateY(-3px); box-shadow: var(--shadow-sm); }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }
        .stat-label { font-size: 0.85rem; color: var(--text-muted); letter-spacing: 0.3px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .stat-card { padding: 1.2rem 1rem; }
            .stat-number { font-size: 1.8rem; } }

        /* ===== CMS News List ===== */
        .news-list { display: flex; flex-direction: column; gap: 1rem; }
        .news-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.5rem;
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }
        .news-item:hover { border-color: var(--border-light); transform: translateX(4px); box-shadow: var(--shadow-sm); }
        .news-item .badge {
            background: rgba(200, 168, 110, 0.12);
            color: var(--secondary);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            border: 1px solid rgba(200, 168, 110, 0.15);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-item .news-body { flex: 1; min-width: 0; }
        .news-item .news-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-title a { color: inherit; }
        .news-item .news-title a:hover { color: var(--secondary); }
        .news-item .news-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .news-item .news-meta span { display: inline-flex; align-items: center; gap: 4px; }
        .news-item .news-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .news-empty i { font-size: 2rem; margin-bottom: 0.5rem; display: block; color: var(--border-color); }
        @media (max-width: 576px) {
            .news-item { flex-direction: column; padding: 1rem; }
            .news-item .badge { align-self: flex-start; }
        }

        /* ===== Process Flow ===== */
        .process-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; position: relative; }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover { border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step .step-number {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 auto 1rem;
        }
        .process-step h4 { font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; }
        .process-step p { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.6; }
        .process-connector { display: none; }
        @media (min-width: 992px) {
            .process-grid { grid-template-columns: repeat(4, 1fr); }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 1rem;
            user-select: none;
            transition: var(--transition);
        }
        .faq-question span { font-weight: 500; color: var(--text-primary); font-size: 0.95rem; }
        .faq-question i { color: var(--text-muted); transition: var(--transition); font-size: 0.85rem; flex-shrink: 0; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--secondary); }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }
        .faq-item.active { border-color: rgba(200, 168, 110, 0.2); }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            overflow: hidden;
            margin: 0 auto;
            max-width: 1000px;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-content { position: relative; z-index: 1; text-align: center; }
        .cta-content h2 { font-size: clamp(1.4rem, 2.8vw, 2rem); margin-bottom: 0.8rem; }
        .cta-content p { max-width: 500px; margin: 0 auto 1.5rem; font-size: 0.95rem; }
        .cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
        @media (max-width: 576px) {
            .cta-section { padding: 2rem 1.5rem; border-radius: var(--radius-md); }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-brand { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
        .footer-desc { font-size: 0.85rem; color: var(--text-muted); max-width: 320px; line-height: 1.7; }
        .footer-heading { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); margin-bottom: 1rem; letter-spacing: 0.5px; text-transform: uppercase; }
        .footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover { color: var(--secondary); transform: translateX(4px); }
        .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 768px) {
            .site-footer .row { gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1rem;
            z-index: 1040;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            cursor: pointer;
        }
        .back-to-top.visible { opacity: 1; visibility: visible; }
        .back-to-top:hover { background: var(--secondary); color: var(--primary); border-color: var(--secondary); transform: translateY(-3px); box-shadow: var(--shadow-md); }

        /* ===== Responsive Tweaks ===== */
        @media (max-width: 991.98px) {
            .section-pad { padding: 3.5rem 0; }
            .service-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
        }
        @media (max-width: 576px) {
            .section-pad { padding: 2.5rem 0; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .process-step { padding: 1.2rem 1rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { justify-content: center; }
        }

/* roulang page: article */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2540;
            --accent: #c9a84c;
            --accent-light: #e0c87a;
            --accent-dark: #a8882e;
            --bg-white: #ffffff;
            --bg-light: #f8f7f4;
            --bg-dark: #0f1923;
            --text-dark: #1e2a3a;
            --text-body: #3a4a5e;
            --text-muted: #7a8a9e;
            --text-white: #f0f4f8;
            --border-light: #e8e6e0;
            --border-accent: #d4b85a;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1280px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }

        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: var(--container-max); padding: 0 24px; margin: 0 auto; width: 100%; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .site-header .navbar { padding: 12px 0; }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .site-header .navbar-brand:hover { color: var(--accent); }
        .site-header .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: var(--bg-dark);
            border-radius: 8px;
            font-weight: 800;
            font-size: 1.3rem;
        }
        .site-header .navbar-nav .nav-link {
            color: rgba(255,255,255,0.75);
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .site-header .navbar-nav .nav-link:hover,
        .site-header .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(201,168,76,0.1);
        }
        .site-header .navbar-nav .nav-link.active { color: var(--accent); font-weight: 600; }
        .nav-cta-btn {
            background: var(--accent);
            color: var(--bg-dark) !important;
            border: none;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(201,168,76,0.3); }
        .navbar-toggler { border: 1px solid rgba(255,255,255,0.2); padding: 8px; border-radius: 8px; }
        .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
        @media (max-width: 991px) {
            .site-header .navbar-nav { padding: 16px 0; }
            .site-header .navbar-nav .nav-link { padding: 12px 16px; }
            .nav-cta-btn { margin-top: 12px; width: 100%; text-align: center; }
        }

        /* ===== Breadcrumb ===== */
        .article-breadcrumb {
            background: var(--bg-dark);
            padding: 18px 0 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .article-breadcrumb .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        .article-breadcrumb .breadcrumb-item a {
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
        }
        .article-breadcrumb .breadcrumb-item a:hover { color: var(--accent); }
        .article-breadcrumb .breadcrumb-item.active {
            color: var(--accent);
            font-size: 0.85rem;
        }
        .article-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255,255,255,0.3);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: var(--bg-dark);
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero .article-category-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            max-width: 800px;
            margin-bottom: 20px;
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            align-items: center;
        }
        .article-hero .article-meta i { margin-right: 6px; color: var(--accent); }
        @media (max-width: 768px) {
            .article-hero { padding: 40px 0 50px; }
            .article-hero h1 { font-size: 1.8rem; }
        }

        /* ===== Article Content ===== */
        .article-main-wrap {
            margin-top: -40px;
            position: relative;
            z-index: 2;
            padding-bottom: 60px;
        }
        .article-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px 56px;
            border: 1px solid var(--border-light);
        }
        .article-card .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-card .article-body h2,
        .article-card .article-body h3,
        .article-card .article-body h4 {
            color: var(--primary);
            font-weight: 700;
            margin-top: 36px;
            margin-bottom: 16px;
        }
        .article-card .article-body h2 { font-size: 1.6rem; }
        .article-card .article-body h3 { font-size: 1.3rem; }
        .article-card .article-body p { margin-bottom: 18px; }
        .article-card .article-body ul,
        .article-card .article-body ol { margin-bottom: 18px; padding-left: 24px; }
        .article-card .article-body li { margin-bottom: 8px; }
        .article-card .article-body img { border-radius: var(--radius); margin: 24px 0; }
        .article-card .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            background: var(--bg-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-body);
        }
        .article-card .article-body a { color: var(--primary-light); text-decoration: underline; }
        .article-card .article-body a:hover { color: var(--accent); }
        .article-card .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
        }
        .article-card .article-tags .tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-body);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-card .article-tags .tag:hover {
            background: var(--accent);
            color: var(--bg-dark);
            border-color: var(--accent);
        }
        .article-card .article-share {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-card .article-share span { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .article-card .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-card .article-share a:hover {
            background: var(--accent);
            color: var(--bg-dark);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .article-card { padding: 28px 20px; }
            .article-card .article-body { font-size: 1rem; }
        }

        /* ===== Sidebar / Related ===== */
        .sidebar-section {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            margin-bottom: 24px;
        }
        .sidebar-section h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
        }
        .sidebar-section .related-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-section .related-item:last-child { border-bottom: none; }
        .sidebar-section .related-item:hover { padding-left: 8px; }
        .sidebar-section .related-item img {
            width: 72px;
            height: 56px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-section .related-item .related-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-section .related-item .related-title:hover { color: var(--accent); }
        .sidebar-section .related-item .related-date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ===== CTA Section ===== */
        .article-cta-section {
            background: var(--bg-dark);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .article-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-cta-section .container { position: relative; z-index: 1; }
        .article-cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .article-cta-section p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .article-cta-section .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 16px 42px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
        }
        .article-cta-section .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(201,168,76,0.25);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-heading {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-bottom {
            margin-top: 40px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .site-footer .footer-bottom a { color: rgba(255,255,255,0.5); }
        .site-footer .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 768px) {
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Article not found ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-home {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover { background: var(--accent-light); transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .article-main-wrap .row { flex-direction: column; }
            .article-main-wrap .col-lg-8 { order: 1; }
            .article-main-wrap .col-lg-4 { order: 2; margin-top: 30px; }
        }
        @media (max-width: 576px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-card { padding: 20px 16px; border-radius: var(--radius); }
            .article-cta-section h2 { font-size: 1.5rem; }
            .article-cta-section .cta-btn { width: 100%; text-align: center; }
        }

        /* ===== JSON-LD inline ===== */
        .json-ld-wrap { display: none; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a2a4a;
            --primary-light: #1a3f62;
            --primary-dark: #051a30;
            --accent: #c9a84c;
            --accent-light: #e0c36a;
            --accent-dark: #a88c30;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0a1a2e;
            --bg-card: #ffffff;
            --text-body: #1e2b3a;
            --text-light: #4a5b6e;
            --text-muted: #7a8a9e;
            --text-white: #f0f4f8;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --shadow-sm: 0 2px 8px rgba(10, 42, 74, 0.06);
            --shadow-md: 0 8px 30px rgba(10, 42, 74, 0.10);
            --shadow-lg: 0 16px 48px rgba(10, 42, 74, 0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 1rem;
            padding-top: var(--header-height);
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

        .container {
            max-width: var(--max-width);
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 0.5em;
        }

        h1 {
            font-size: 2.8rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2.2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(10, 42, 74, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
            transition: background var(--transition);
        }

        .site-header .navbar {
            height: var(--header-height);
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-white) !important;
            letter-spacing: 0.02em;
            padding: 0;
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.3rem;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.75) !important;
            font-weight: 500;
            padding: 8px 18px !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: #fff !important;
            background: rgba(255, 255, 255, 0.08);
        }
        .navbar-nav .nav-link.active {
            color: #fff !important;
            background: rgba(201, 168, 76, 0.18);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta-btn {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 50px;
            border: none;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.35);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .navbar-toggler {
            border-color: rgba(255, 255, 255, 0.2);
            padding: 6px 10px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.3);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: calc(100vh - var(--header-height));
            display: flex;
            align-items: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: var(--text-white);
            padding: 80px 0;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 26, 46, 0.88) 0%, rgba(10, 42, 74, 0.72) 60%, rgba(10, 42, 74, 0.30) 100%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .hero-content h1 .accent-text {
            color: var(--accent);
        }
        .hero-content .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin-bottom: 2rem;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-actions .btn-primary-custom {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            border: none;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(201, 168, 76, 0.30);
        }
        .hero-actions .btn-primary-custom:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(201, 168, 76, 0.40);
        }
        .hero-actions .btn-secondary-custom {
            background: transparent;
            color: #fff !important;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 50px;
            border: 1.5px solid rgba(255, 255, 255, 0.30);
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .hero-actions .btn-secondary-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.50);
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-badges .badge-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.80);
        }
        .hero-badges .badge-item i {
            color: var(--accent);
            font-size: 1rem;
        }

        /* ===== Section Spacing ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block.bg-white {
            background: var(--bg-white);
        }
        .section-block.bg-light {
            background: var(--bg-body);
        }
        .section-block.bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-block.bg-dark h2,
        .section-block.bg-dark .section-title p {
            color: #fff;
        }
        .section-block.bg-dark .section-title h2::after {
            background: var(--accent);
        }

        /* ===== Service Cards ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card .icon-wrap {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(201, 168, 76, 0.12);
            border-radius: var(--radius-sm);
            margin-bottom: 18px;
            font-size: 1.5rem;
            color: var(--accent);
        }
        .service-card h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Process Steps ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .process-step h5 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            padding: 20px 12px;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .section-block.bg-dark .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== Industry / Scenario Cards ===== */
        .industry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 24px;
        }
        .industry-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .industry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .industry-card .card-img {
            height: 160px;
            overflow: hidden;
            background: var(--primary-light);
        }
        .industry-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .industry-card:hover .card-img img {
            transform: scale(1.05);
        }
        .industry-card .card-body {
            padding: 20px 22px 24px;
        }
        .industry-card .card-body h5 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .industry-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(201, 168, 76, 0.04);
        }
        .faq-item .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: transform var(--transition);
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark) url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 26, 46, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-content {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }
        .cta-content .btn-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 16px 44px;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 24px rgba(201, 168, 76, 0.30);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-content .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 36px rgba(201, 168, 76, 0.40);
        }
        .cta-content .btn-cta:active {
            transform: translateY(0);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
            line-height: 1.6;
            font-size: 0.9rem;
        }
        .site-footer .footer-heading {
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
            font-size: 0.9rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: var(--bg-body);
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.88rem;
        }
        .breadcrumb-bar .breadcrumb {
            margin-bottom: 0;
            background: none;
            padding: 0;
        }
        .breadcrumb-bar .breadcrumb-item a {
            color: var(--text-light);
        }
        .breadcrumb-bar .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-bar .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.6rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .section-block {
                padding: 60px 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            body {
                padding-top: var(--header-height);
            }
            .hero-section {
                min-height: auto;
                padding: 60px 0;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .section-block {
                padding: 48px 0;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .industry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-secondary-custom {
                text-align: center;
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .navbar-nav .nav-link {
                padding: 10px 16px !important;
                font-size: 0.95rem;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-sub {
                font-size: 0.9rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .section-title {
                margin-bottom: 2rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid .stat-item .stat-number {
                font-size: 2rem;
            }
            .industry-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .hero-badges {
                flex-direction: column;
                gap: 10px;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .nav-cta-btn {
                padding: 6px 16px;
                font-size: 0.82rem;
            }
            .section-block {
                padding: 36px 0;
            }
            .cta-content .btn-cta {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .site-footer {
                padding: 36px 0 20px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .nav-link:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Smooth fade-in on scroll ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }