/* roulang page: index */
:root {
            --color-primary: #1A5FB4;
            --color-primary-dark: #13407D;
            --color-primary-light: #3584D6;
            --color-accent: #F57C00;
            --color-accent-hover: #E06B00;
            --color-accent-light: #FFE0C0;
            --color-bg: #F5F7FA;
            --color-bg-white: #FFFFFF;
            --color-bg-dark: #0D2B4E;
            --color-bg-dark-alt: #102D50;
            --color-text: #1A1A2E;
            --color-text-secondary: #5A6072;
            --color-text-light: #8B919E;
            --color-text-white: #F0F2F5;
            --color-border: #E2E8F0;
            --color-border-light: #EFF2F6;
            --color-success: #10B981;
            --color-success-light: #D1FAE5;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 32px rgba(0,0,0,0.10), 0 4px 10px rgba(0,0,0,0.05);
            --shadow-xl: 0 18px 48px rgba(0,0,0,0.12), 0 6px 16px rgba(0,0,0,0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-body: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1260px;
            --nav-height: 72px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
        }

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

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

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

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

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-site {
            display: flex;
            align-items: center;
            width: 100%;
            gap: 20px;
        }
        .header-logo {
            flex-shrink: 0;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .header-logo i {
            color: var(--color-accent);
            margin-right: 6px;
            font-size: 1.25rem;
            vertical-align: -1px;
        }
        .header-logo:hover {
            color: var(--color-primary-dark);
        }
        .header-search-wrap {
            flex: 1;
            max-width: 480px;
            position: relative;
            margin: 0 auto;
        }
        .header-search-wrap input {
            width: 100%;
            height: 44px;
            padding: 0 48px 0 18px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            color: var(--color-text);
            background: var(--color-bg);
            transition: all var(--transition-base);
            outline: none;
        }
        .header-search-wrap input:focus {
            border-color: var(--color-primary);
            background: var(--color-bg-white);
            box-shadow: 0 0 0 4px rgba(26,95,180,0.08);
        }
        .header-search-wrap input::placeholder {
            color: var(--color-text-light);
        }
        .header-search-btn {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--color-primary);
            color: #fff;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .header-search-btn:hover {
            background: var(--color-primary-dark);
            transform: translateY(-50%) scale(1.05);
        }
        .header-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .header-nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(26,95,180,0.05);
        }
        .header-nav-links li a.nav-active {
            color: var(--color-primary);
            background: rgba(26,95,180,0.08);
            font-weight: 600;
        }
        .header-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .header-mobile-toggle:hover {
            background: var(--color-bg);
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,43,78,0.88) 0%, rgba(13,43,78,0.72) 40%, rgba(26,95,180,0.55) 100%);
            z-index: 1;
        }
        .hero-section .container-site {
            position: relative;
            z-index: 2;
            padding-top: 50px;
            padding-bottom: 50px;
        }
        .hero-content {
            max-width: 720px;
            color: #fff;
        }
        .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 750;
            line-height: 1.25;
            margin: 0 0 20px;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-content h1 span {
            color: var(--color-accent);
        }
        .hero-subtitle {
            font-size: 1.18rem;
            color: rgba(255,255,255,0.85);
            margin: 0 0 32px;
            line-height: 1.65;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .btn-white:hover {
            background: #f0f4f8;
            color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-top: 4px;
        }

        /* ===== SECTION COMMON ===== */
        .section-pad {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 10px;
            letter-spacing: -0.01em;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(26,95,180,0.07);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        /* ===== SERVICE CARDS ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .service-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.06);
        }
        .service-card-body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-body h3 {
            font-size: 1.2rem;
            font-weight: 650;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .service-card-body p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            margin: 0 0 16px;
            line-height: 1.6;
            flex: 1;
        }
        .service-card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .service-card-link i {
            transition: transform var(--transition-fast);
        }
        .service-card-link:hover i {
            transform: translateX(3px);
        }

        /* ===== NEWS LIST ===== */
        .news-list-wrap {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
        }
        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background: rgba(26,95,180,0.02);
        }
        .news-list-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .news-list-content h4 {
            font-size: 1.02rem;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .news-list-content p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-list-meta {
            font-size: 0.78rem;
            color: var(--color-text-light);
            margin-top: 6px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .news-list-meta span {
            display: inline-flex;
            align-items: center;
            gap: 3px;
        }
        .badge-cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: rgba(26,95,180,0.08);
            color: var(--color-primary);
        }
        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--color-text-light);
            font-size: 1rem;
        }

        /* ===== CATEGORY NAV CARDS ===== */
        .cat-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            text-decoration: none;
            color: #fff;
        }
        .cat-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-4px);
            color: #fff;
        }
        .cat-card-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .cat-card-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .cat-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13,43,78,0.9) 0%, rgba(13,43,78,0.4) 50%, rgba(13,43,78,0.15) 100%);
            z-index: 1;
        }
        .cat-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
        }
        .cat-card-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: #fff;
        }
        .cat-card-body p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
            margin: 0 0 12px;
            line-height: 1.5;
        }
        .cat-card-arrow {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
        }

        /* ===== STATS SECTION ===== */
        .stats-section {
            background: var(--color-bg-dark);
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-block-icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .stat-block-num {
            font-size: 2.5rem;
            font-weight: 750;
            line-height: 1.1;
        }
        .stat-block-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-top: 6px;
        }

        /* ===== STEPS ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 650;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.55;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg-white);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 20px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }
        .faq-q {
            font-weight: 650;
            font-size: 1.05rem;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-q i {
            font-size: 0.85rem;
            color: var(--color-primary);
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            padding-top: 0;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-top: 12px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: #fff;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-bg-dark-alt);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }
        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.6;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 650;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.87rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .header-search-wrap {
                max-width: 320px;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 480px;
            }
            .hero-content h1 {
                font-size: 1.75rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .cat-cards-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-pad {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .header-nav-links {
                display: none;
            }
            .header-mobile-toggle {
                display: block;
            }
            .header-search-wrap {
                max-width: 100%;
                flex: 1;
            }
            .header-nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-white);
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 10px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 14px;
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .header-search-wrap input {
                height: 38px;
                font-size: 0.85rem;
                padding: 0 40px 0 14px;
            }
            .header-search-btn {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
                right: 4px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .service-card-img {
                height: 160px;
            }
            .cat-card {
                min-height: 200px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-block-num {
                font-size: 1.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0f2557;
            --color-accent: #ff5e14;
            --color-accent-hover: #e04d0a;
            --color-green: #00a86b;
            --color-green-light: #e6f7f1;
            --color-bg: #f8f9fb;
            --color-white: #ffffff;
            --color-text: #1a1a2e;
            --color-text-weak: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f1f3;
            --color-overlay: rgba(15, 37, 87, 0.72);
            --color-card-shadow: rgba(15, 37, 87, 0.06);
            --color-card-hover-shadow: rgba(15, 37, 87, 0.13);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --section-gap: 72px;
            --section-gap-mobile: 44px;
        }

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

        html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

        body {
            font-family: var(--font-stack);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }
        input { font-family: inherit; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-primary); }

        .container-site {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 768px) {
            .container-site { padding: 0 15px; }
        }

        /* Header */
        .site-header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .site-header .container-site {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }
        .header-logo i { font-size: 1.5rem; color: var(--color-accent); }
        .header-logo:hover { opacity: 0.82; }

        .header-search-wrap { flex: 1; max-width: 440px; min-width: 180px; }
        .header-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border-radius: 50px;
            border: 2px solid transparent;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .header-search-wrap form:focus-within {
            border-color: var(--color-accent);
            background: var(--color-white);
            box-shadow: 0 0 0 5px rgba(255, 94, 20, 0.08);
        }
        .header-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 11px 18px;
            font-size: 0.95rem;
            color: var(--color-text);
            outline: none;
            min-width: 0;
        }
        .header-search-wrap input::placeholder { color: var(--color-text-light); }
        .header-search-btn {
            padding: 11px 16px;
            color: var(--color-text-weak);
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }
        .header-search-btn:hover { color: var(--color-accent); }

        .header-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .header-nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav-links li a:hover { color: var(--color-primary); background: var(--color-bg); }
        .header-nav-links li a.nav-active {
            color: var(--color-white);
            background: var(--color-accent);
        }
        .header-nav-links li a.nav-active:hover { background: var(--color-accent-hover); }

        .header-mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 6px 8px;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }
        .header-mobile-toggle:hover { background: var(--color-bg); }

        @media (max-width: 1024px) {
            .header-search-wrap { max-width: 280px; }
            .header-nav-links li a { padding: 8px 12px; font-size: 0.88rem; }
        }
        @media (max-width: 768px) {
            .site-header .container-site { height: 58px; gap: 12px; }
            .header-search-wrap { max-width: none; flex: 1; min-width: 0; }
            .header-search-wrap input { padding: 10px 14px; font-size: 0.88rem; }
            .header-mobile-toggle { display: block; flex-shrink: 0; }
            .header-nav-links {
                display: none;
                position: absolute;
                top: 58px;
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 12px 20px;
                gap: 2px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .header-nav-links.open { display: flex; }
            .header-nav-links li { width: 100%; }
            .header-nav-links li a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
                text-align: center;
            }
            .header-logo { font-size: 1.1rem; }
            .header-logo i { font-size: 1.3rem; }
        }
        @media (max-width: 480px) {
            .site-header .container-site { height: 54px; gap: 8px; }
            .header-logo { font-size: 0.95rem; gap: 6px; }
            .header-logo i { font-size: 1.1rem; }
            .header-search-wrap input { padding: 9px 10px; font-size: 0.82rem; }
            .header-search-btn { padding: 9px 12px; }
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--color-primary) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--color-overlay);
            z-index: 1;
        }
        .page-hero-content { position: relative; z-index: 2; max-width: 750px; padding: 50px 20px; }
        .page-hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            text-transform: uppercase;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.88);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .page-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
        @media (max-width: 768px) {
            .page-hero { min-height: 380px; }
            .page-hero h1 { font-size: 2rem; }
            .page-hero p { font-size: 1.05rem; }
        }
        @media (max-width: 480px) {
            .page-hero { min-height: 340px; }
            .page-hero h1 { font-size: 1.6rem; }
            .page-hero p { font-size: 0.95rem; }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-weight: 700;
            font-size: 0.98rem;
            border-radius: 50px;
            transition: all var(--transition-base);
            cursor: pointer;
            text-align: center;
            justify-content: center;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 94, 20, 0.35);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.7);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline-dark:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-sm { padding: 9px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.08rem; }

        /* Section */
        .section { padding: var(--section-gap) 0; }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.08rem;
            color: var(--color-text-weak);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .section-header { text-align: center; margin-bottom: 44px; }
        @media (max-width: 768px) {
            .section { padding: var(--section-gap-mobile) 0; }
            .section-title { font-size: 1.55rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 28px; }
        }

        /* Service Cards */
        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-xl);
        }
        .service-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .service-card-body { padding: 24px 22px 28px; flex: 1; display: flex; flex-direction: column; }
        .service-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .service-card-body p {
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 14px;
        }
        .service-card-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .service-card-link:hover { gap: 10px; color: var(--color-accent-hover); }
        @media (max-width: 1024px) {
            .service-card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .service-card-grid { grid-template-columns: 1fr; }
            .service-card-img { height: 180px; }
        }

        /* Highlights */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .highlight-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-3px);
        }
        .highlight-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
        }
        .highlight-icon.orange { background: #fff3ed; color: var(--color-accent); }
        .highlight-icon.blue { background: #eef3ff; color: var(--color-primary); }
        .highlight-icon.green { background: var(--color-green-light); color: var(--color-green); }
        .highlight-icon.purple { background: #f5f0ff; color: #7c3aed; }
        .highlight-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .highlight-card p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
        }
        @media (max-width: 1024px) {
            .highlights-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .highlights-grid { grid-template-columns: 1fr; }
        }

        /* Article cards */
        .article-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }
        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .article-card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }
        .article-card-body { padding: 20px 18px 22px; flex: 1; display: flex; flex-direction: column; }
        .article-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-accent);
            background: #fff3ed;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .article-card-body h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .article-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            flex: 1;
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .article-card-meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
            display: flex;
            gap: 12px;
        }
        @media (max-width: 1024px) {
            .article-card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .article-card-grid { grid-template-columns: 1fr; }
            .article-card-img { height: 170px; }
        }

        /* Scenario */
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .scenario-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .scenario-item-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            background: #eef3ff;
            color: var(--color-primary);
        }
        .scenario-item-text h4 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }
        .scenario-item-text p { font-size: 0.88rem; color: var(--color-text-weak); line-height: 1.6; margin: 0; }
        @media (max-width: 768px) {
            .scenario-list { grid-template-columns: 1fr; }
        }

        /* FAQ */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover { border-color: var(--color-border); }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: transparent;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .faq-question:hover { background: var(--color-bg); }
        .faq-question i { transition: transform var(--transition-base); color: var(--color-accent); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer { max-height: 400px; }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            padding: 56px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.08rem;
            color: rgba(255,255,255,0.82);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn { position: relative; z-index: 1; }
        @media (max-width: 768px) {
            .cta-section { padding: 40px 20px; border-radius: var(--radius-lg); }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* Footer */
        .site-footer {
            background: #0a1a35;
            color: rgba(255,255,255,0.78);
            padding: 52px 0 28px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-col ul li { margin-bottom: 7px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.62);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: var(--color-accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.84rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a { color: rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color: var(--color-accent); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* Utility */
        .bg-white { background: var(--color-white); }
        .bg-light { background: var(--color-bg); }
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }

        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

/* roulang page: article */
:root {
            --color-primary: #0f1f3d;
            --color-primary-light: #1a3559;
            --color-accent: #e63946;
            --color-accent-hover: #c5303c;
            --color-warm: #f4a261;
            --color-warm-light: #fef3e7;
            --color-bg: #f8f9fa;
            --color-bg-alt: #f0f2f5;
            --color-text: #2b2d42;
            --color-text-light: #495057;
            --color-muted: #6c757d;
            --color-border: #dee2e6;
            --color-border-light: #e9ecef;
            --color-white: #ffffff;
            --color-success: #2ecc71;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 4px rgba(0,0,0,0.04);
            --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);
            --shadow-xl: 0 30px 80px rgba(0,0,0,0.16);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-heading: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --max-width: 1240px;
            --nav-height: 70px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
        }
        button:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container-site {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-site {
            display: flex;
            align-items: center;
            gap: 20px;
            width: 100%;
            flex-wrap: nowrap;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo i {
            color: var(--color-accent);
            font-size: 1.4rem;
        }
        .header-logo:hover {
            color: var(--color-accent);
        }
        .header-search-wrap {
            flex: 1;
            max-width: 440px;
            min-width: 180px;
        }
        .header-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border-radius: 30px;
            border: 2px solid transparent;
            transition: all var(--transition-fast);
            overflow: hidden;
        }
        .header-search-wrap form:focus-within {
            border-color: var(--color-accent);
            background: var(--color-white);
            box-shadow: 0 0 0 4px rgba(230,57,70,0.08);
        }
        .header-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 16px;
            font-size: 0.95rem;
            color: var(--color-text);
            outline: none;
            min-width: 0;
            font-family: var(--font-sans);
        }
        .header-search-wrap input::placeholder {
            color: var(--color-muted);
        }
        .header-search-btn {
            background: var(--color-accent);
            border: none;
            color: #fff;
            padding: 10px 16px;
            font-size: 0.95rem;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .header-search-btn:hover {
            background: var(--color-accent-hover);
        }
        .header-nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .header-nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 24px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
        }
        .header-nav-links li a:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }
        .header-nav-links li a.nav-active {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
        }
        .header-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 8px;
            flex-shrink: 0;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        .breadcrumb-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
            font-size: 0.875rem;
            color: var(--color-muted);
        }
        .breadcrumb-list li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-list li a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-list li a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-sep {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb-current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== ARTICLE HERO HEADER ========== */
        .article-hero {
            background: var(--color-white);
            padding: 40px 0 0;
        }
        .article-hero-inner {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-category-badge {
            display: inline-block;
            background: var(--color-warm-light);
            color: #c27820;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .article-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.3;
            margin: 0 0 14px;
            letter-spacing: -0.3px;
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 0.9rem;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .article-meta-row i {
            margin-right: 4px;
            color: var(--color-accent);
        }
        .article-featured-img {
            width: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-top: 8px;
            box-shadow: var(--shadow-md);
        }
        .article-featured-img img {
            width: 100%;
            border-radius: var(--radius-lg);
            object-fit: cover;
            max-height: 460px;
        }

        /* ========== ARTICLE CONTENT ========== */
        .article-content-section {
            background: var(--color-white);
            padding: 40px 0 60px;
        }
        .article-content-wrapper {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 2em 0 0.7em;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--color-accent);
            display: inline-block;
        }
        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 1.6em 0 0.6em;
        }
        .article-body p {
            margin: 0 0 1.2em;
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-bg-alt);
            margin: 1.5em 0;
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--color-text-light);
        }
        .article-body ul,
        .article-body ol {
            margin: 1em 0;
            padding-left: 1.5em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--color-accent-hover);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.95rem;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--color-border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--color-bg-alt);
            font-weight: 600;
            color: var(--color-primary);
        }
        .article-body code {
            background: var(--color-bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--color-accent);
        }

        /* not-found state */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .article-not-found-icon {
            font-size: 5rem;
            color: var(--color-warm);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .article-not-found p {
            color: var(--color-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .article-not-found .btn-back-home {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .article-not-found .btn-back-home:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            background: var(--color-bg-alt);
            padding: 60px 0;
        }
        .related-section .section-label {
            text-align: center;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--color-accent);
            margin-bottom: 6px;
        }
        .related-section .section-title {
            text-align: center;
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--color-primary);
            margin: 0 0 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .related-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .related-card-body h4 a {
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        .related-card-body h4 a:hover {
            color: var(--color-accent);
        }
        .related-card-body p {
            font-size: 0.875rem;
            color: var(--color-muted);
            margin: 0 0 14px;
            flex: 1;
            line-height: 1.5;
        }
        .related-card-meta {
            font-size: 0.8rem;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(244,162,97,0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-inner {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }
        .cta-inner h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 12px;
        }
        .cta-inner p {
            color: rgba(255,255,255,0.8);
            font-size: 1.05rem;
            margin: 0 0 28px;
            line-height: 1.6;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-cta-primary {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 13px 30px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
            border: none;
        }
        .btn-cta-primary:hover {
            background: #fff;
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-cta-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 13px 30px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.5);
            transition: all var(--transition-fast);
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0a1628;
            color: rgba(255,255,255,0.75);
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-brand h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            line-height: 1.6;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 7px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .footer-col ul li a:hover {
            color: var(--color-warm);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a:hover {
            color: var(--color-warm);
        }

        /* ========== READING PROGRESS BAR ========== */
        .reading-progress {
            position: fixed;
            top: var(--nav-height);
            left: 0;
            height: 4px;
            background: var(--color-accent);
            z-index: 999;
            width: 0%;
            transition: width 0.1s linear;
            border-radius: 0 2px 2px 0;
        }

        /* ========== BACK TO TOP ========== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 900;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            border: none;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all var(--transition);
            cursor: pointer;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .header-search-wrap {
                max-width: 280px;
            }
            .header-nav-links li a {
                padding: 7px 12px;
                font-size: 0.875rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 62px;
            }
            .site-header .container-site {
                gap: 10px;
            }
            .header-logo {
                font-size: 1.05rem;
                gap: 5px;
            }
            .header-logo i {
                font-size: 1.1rem;
            }
            .header-search-wrap {
                max-width: 100%;
                flex: 1;
                min-width: 120px;
            }
            .header-search-wrap input {
                font-size: 0.85rem;
                padding: 8px 12px;
            }
            .header-search-btn {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .header-mobile-toggle {
                display: block;
            }
            .header-nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 12px 20px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .header-nav-links.open {
                display: flex;
            }
            .header-nav-links li a {
                display: block;
                padding: 10px 14px;
                border-radius: var(--radius-sm);
                width: 100%;
                text-align: center;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .article-body {
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-card-img {
                height: 180px;
            }
            .cta-inner h3 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .article-featured-img img {
                max-height: 260px;
            }
            .article-not-found {
                padding: 50px 16px;
            }
            .article-not-found-icon {
                font-size: 3.5rem;
            }
            .back-to-top {
                bottom: 20px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-meta-row {
                font-size: 0.8rem;
                gap: 10px;
            }
            .article-body {
                font-size: 0.93rem;
            }
            .cta-inner h3 {
                font-size: 1.2rem;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                padding: 11px 22px;
                font-size: 0.9rem;
                width: 100%;
                text-align: center;
            }
            .breadcrumb-list {
                font-size: 0.78rem;
            }
            .article-category-badge {
                font-size: 0.72rem;
                padding: 4px 10px;
            }
            .related-card-img {
                height: 160px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #e85d3a;
            --color-primary-dark: #c94a2b;
            --color-primary-light: #fde8e3;
            --color-secondary: #1a1a2e;
            --color-secondary-light: #2d2d44;
            --color-accent: #0f8b8d;
            --color-accent-light: #e0f5f5;
            --color-bg: #fafafb;
            --color-white: #ffffff;
            --color-text: #2c2c3a;
            --color-text-weak: #6b6b7b;
            --color-text-lighter: #90909f;
            --color-border: #e2e2ea;
            --color-border-light: #f0f0f5;
            --color-success: #2ecc71;
            --color-warning: #f39c12;
            --color-star: #f5a623;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.07);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.10);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.13);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.16);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --max-width: 1200px;
            --header-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover, a:focus {
            color: var(--color-primary);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

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

        ul, ol {
            list-style: none;
        }

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

        .container-site {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-site {
            display: flex;
            align-items: center;
            gap: 20px;
            width: 100%;
            flex-wrap: nowrap;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-secondary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo i {
            color: var(--color-primary);
            font-size: 1.35rem;
            transition: transform var(--transition-normal);
        }
        .header-logo:hover i {
            transform: rotate(-15deg) scale(1.1);
        }
        .header-logo:hover {
            color: var(--color-primary);
        }

        .header-search-wrap {
            flex: 1 1 320px;
            max-width: 480px;
            min-width: 180px;
        }
        .header-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1.5px solid var(--color-border);
            border-radius: 30px;
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .header-search-wrap form:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(232,93,58,0.1);
        }
        .header-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 16px;
            font-size: 0.95rem;
            color: var(--color-text);
            outline: none;
            min-width: 0;
        }
        .header-search-wrap input::placeholder {
            color: var(--color-text-lighter);
        }
        .header-search-btn {
            border: none;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 16px;
            cursor: pointer;
            transition: background var(--transition-fast);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .header-search-btn:hover {
            background: var(--color-primary-dark);
        }

        .header-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
            margin-left: auto;
        }
        .header-nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 22px;
            font-weight: 600;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav-links li a:hover,
        .header-nav-links li a:focus {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .header-nav-links li a.nav-active {
            color: #fff;
            background: var(--color-primary);
            pointer-events: none;
        }

        .header-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-secondary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .header-mobile-toggle:hover {
            background: var(--color-border-light);
        }

        /* ============ HERO ============ */
        .hero-category {
            position: relative;
            padding: 80px 0 90px;
            background: linear-gradient(160deg, #1a1a2e 0%, #2d2d44 40%, #1e2d3a 100%);
            overflow: hidden;
            color: #fff;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(232,93,58,0.25) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero-category .container-site {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-cat-content {
            flex: 1 1 480px;
            min-width: 280px;
        }
        .hero-cat-content .hero-badge {
            display: inline-block;
            background: rgba(255,255,255,0.13);
            border: 1px solid rgba(255,255,255,0.25);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .hero-cat-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .hero-cat-content h1 span {
            color: var(--color-primary);
        }
        .hero-cat-content .hero-desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.78);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-cat-content .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            padding: 13px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(232,93,58,0.35);
        }
        .btn-primary-lg:hover {
            background: #f06b4a;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232,93,58,0.45);
            color: #fff;
        }
        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.5);
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .btn-outline-lg:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .hero-cat-visual {
            flex: 0 0 340px;
            min-width: 240px;
        }
        .hero-cat-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            transform: rotate(-1deg);
            transition: transform var(--transition-slow);
            width: 100%;
        }
        .hero-cat-visual img:hover {
            transform: rotate(0deg) scale(1.02);
        }

        /* ============ SECTIONS ============ */
        .section-block {
            padding: 70px 0;
        }
        .section-block-alt {
            padding: 70px 0;
            background: var(--color-white);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            padding: 5px 15px;
            border-radius: 16px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.6px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-secondary);
            margin-bottom: 10px;
        }
        .section-header .section-subtitle {
            color: var(--color-text-weak);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ============ CARDS ============ */
        .card-training {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .card-training:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-primary-light);
        }
        .card-training .card-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card-training .card-icon-circle.icon-orange {
            background: #fef0ec;
            color: var(--color-primary);
        }
        .card-training .card-icon-circle.icon-teal {
            background: #e6f7f7;
            color: var(--color-accent);
        }
        .card-training .card-icon-circle.icon-blue {
            background: #eaf2fd;
            color: #3b6fc2;
        }
        .card-training .card-icon-circle.icon-green {
            background: #eafaf1;
            color: #27ae60;
        }
        .card-training h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-secondary);
        }
        .card-training p {
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.65;
            flex-grow: 1;
        }
        .card-training .card-meta-row {
            display: flex;
            gap: 14px;
            margin-top: 14px;
            font-size: 0.85rem;
            color: var(--color-text-lighter);
            flex-wrap: wrap;
        }
        .card-training .card-meta-row span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* cover card */
        .card-cover {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-cover:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .card-cover .card-cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-cover .card-cover-body {
            padding: 20px 18px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .card-cover .card-cover-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .card-cover .card-cover-body p {
            color: var(--color-text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
            flex-grow: 1;
        }
        .card-cover .card-cover-body .card-tag-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .tag-pill {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
        }
        .tag-pill.tag-teal {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        /* ============ PROCESS STEPS ============ */
        .process-list {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            justify-content: center;
            counter-reset: process-counter;
        }
        .process-item {
            flex: 1 1 200px;
            max-width: 260px;
            text-align: center;
            position: relative;
            padding: 30px 18px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            counter-increment: process-counter;
            transition: all var(--transition-normal);
        }
        .process-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .process-item::before {
            content: counter(process-counter);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto 14px;
        }
        .process-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-item p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.55;
        }

        /* ============ STATS ROW ============ */
        .stats-row {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .stat-item {
            text-align: center;
            flex: 1 1 150px;
            max-width: 220px;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            margin-top: 6px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-xs);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-secondary);
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-bg);
        }
        .faq-question i {
            color: var(--color-text-lighter);
            transition: transform var(--transition-normal);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--color-text-weak);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(145deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 50px 20px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            left: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(232,93,58,0.3) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container-site {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.75);
            font-size: 1.05rem;
            margin-bottom: 24px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary-lg {
            box-shadow: 0 6px 22px rgba(232,93,58,0.5);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255,255,255,0.72);
            padding: 50px 0 28px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h4, .site-footer h5 {
            color: #fff;
            margin-bottom: 10px;
        }
        .site-footer h4 {
            font-size: 1.2rem;
            font-weight: 700;
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.4px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            margin-top: 4px;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.55);
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-category {
                padding: 50px 0 55px;
            }
            .hero-cat-content h1 {
                font-size: 2rem;
            }
            .hero-cat-visual {
                flex: 0 0 260px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section-block,
            .section-block-alt {
                padding: 48px 0;
            }
            .cta-section {
                margin: 30px 16px;
                padding: 44px 0;
            }
            .cta-section h2 {
                font-size: 1.55rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 16px 20px;
                box-shadow: var(--shadow-md);
                border-bottom: 2px solid var(--color-border-light);
                gap: 4px;
                z-index: 999;
            }
            .header-nav-links.show {
                display: flex;
            }
            .header-nav-links li a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                border-radius: var(--radius-md);
            }
            .header-mobile-toggle {
                display: block;
                margin-left: auto;
            }
            .header-search-wrap {
                flex: 1 1 auto;
                max-width: none;
            }
            .hero-category .container-site {
                flex-direction: column;
                gap: 28px;
                text-align: center;
            }
            .hero-cat-content .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cat-content .hero-cta-group {
                justify-content: center;
            }
            .hero-cat-visual {
                flex: 0 0 auto;
                max-width: 300px;
                margin: 0 auto;
            }
            .hero-cat-content h1 {
                font-size: 1.7rem;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .process-list {
                flex-direction: column;
                align-items: center;
            }
            .process-item {
                max-width: 340px;
                width: 100%;
            }
            .stats-row {
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-section {
                margin: 20px 10px;
                padding: 36px 16px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .container-site {
                gap: 10px;
            }
            .header-logo {
                font-size: 1rem;
            }
            .header-logo i {
                font-size: 1.1rem;
            }
            .header-search-wrap input {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .header-search-btn {
                padding: 8px 12px;
            }
            .hero-category {
                padding: 36px 0 40px;
            }
            .hero-cat-content h1 {
                font-size: 1.45rem;
            }
            .hero-cat-content .hero-desc {
                font-size: 0.95rem;
            }
            .btn-primary-lg,
            .btn-outline-lg {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .card-training {
                padding: 20px 16px;
            }
            .card-cover .card-cover-img {
                height: 160px;
            }
            .section-block,
            .section-block-alt {
                padding: 36px 0;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }