/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .gradient-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        }
        .gradient-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-xl {
            border-radius: var(--radius-lg);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(30, 64, 175, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: #d97706;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
        }
        .btn-white:hover {
            background: var(--bg-light);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: rgba(30, 64, 175, 0.1);
            color: var(--primary);
        }
        .badge-secondary {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
        }
        .badge-accent {
            background: rgba(16, 185, 129, 0.12);
            color: #047857;
        }
        .badge-white {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
            }
        }
        .divider {
            width: 60px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            margin: 16px 0 24px;
        }
        .divider-center {
            margin: 16px auto 24px;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 6px 0;
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary-light);
        }
        .hero-stat {
            text-align: center;
            padding: 20px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
        }
        .hero-stat-value {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            flex-shrink: 0;
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 14px;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 12px;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 14px;
            line-height: 2;
        }
        .footer-link:hover {
            color: #fff;
        }
        .cms-list-item {
            transition: var(--transition);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .cms-list-item:last-child {
            border-bottom: none;
        }
        .cms-list-item:hover {
            padding-left: 8px;
        }
        .cms-list-item .cms-title {
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
        }
        .cms-list-item:hover .cms-title {
            color: var(--primary);
        }
        .cms-list-item .cms-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .cms-empty {
            padding: 40px 20px;
            text-align: center;
            color: var(--text-light);
            font-size: 15px;
        }
        .mobile-nav {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(12px);
        }
        .mobile-nav.open {
            max-height: 600px;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 24px;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 32px;
        }
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.08);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.05);
            pointer-events: none;
        }
        .backpic-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .backpic-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 64, 175, 0.78) 60%, rgba(30, 64, 175, 0.6) 100%);
            pointer-events: none;
        }
        .cover-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .cover-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .cover-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .cover-card:hover img {
            transform: scale(1.03);
        }
        @media (max-width: 640px) {
            .cover-card img {
                height: 160px;
            }
        }
        .grid-gap {
            gap: 24px;
        }
        @media (max-width: 768px) {
            .grid-gap {
                gap: 16px;
            }
        }
        img[alt] {
            font-size: 14px;
            color: var(--text-light);
        }
        :focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (max-width: 1024px) {
            .hide-tablet {
                display: none !important;
            }
        }
        @media (min-width: 1025px) {
            .show-mobile {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .hero-stat-value {
                font-size: 26px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --bg-dark: #0f172a;
            --bg-dark-2: #1e293b;
            --text-white: #ffffff;
            --text-gray: #cbd5e1;
            --text-muted: #94a3b8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45);
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            background: var(--bg-dark);
            color: var(--text-gray);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 8px;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* ===== Header / Nav ===== */
        header {
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 0.25rem 0;
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: #fff !important;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.5rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.875rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--secondary);
            color: #0f172a;
            border-color: var(--secondary);
        }
        .btn-primary:hover {
            background: var(--secondary-dark);
            border-color: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.12);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border-color: var(--secondary);
        }
        .btn-outline:hover {
            background: var(--secondary);
            color: #0f172a;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 0.4rem 1rem;
            font-size: 0.8rem;
        }
        .btn-lg {
            padding: 0.875rem 2rem;
            font-size: 1rem;
        }

        /* ===== Cards ===== */
        .card {
            background: rgba(30, 41, 59, 0.8);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.2);
        }
        .card-img {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-yellow {
            background: rgba(245, 158, 11, 0.18);
            color: var(--secondary);
        }
        .badge-blue {
            background: rgba(45, 90, 142, 0.25);
            color: #7ab7f0;
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.18);
            color: #34d399;
        }

        /* ===== Step / Timeline ===== */
        .step-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--secondary);
            color: #0f172a;
            font-weight: 800;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: rgba(30, 41, 59, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.15);
        }
        .faq-question {
            padding: 1.25rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: #f1f5f9;
            user-select: none;
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--secondary);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 1.5rem 1.25rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(30, 58, 95, 0.9), rgba(15, 23, 42, 0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            text-align: center;
        }

        /* ===== Footer ===== */
        .footer-link {
            color: var(--text-muted);
            font-size: 0.875rem;
            transition: var(--transition);
            display: inline-block;
            padding: 0.2rem 0;
        }
        .footer-link:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 5rem 0;
            }
        }
        @media (min-width: 1024px) {
            .section-padding {
                padding: 6rem 0;
            }
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            background: rgba(15, 23, 42, 0.98);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-nav.open {
            max-height: 500px;
            padding: 0.75rem 1.25rem 1.25rem;
        }
        .mobile-nav a {
            display: block;
            padding: 0.75rem 0;
            color: var(--text-gray);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-weight: 500;
            transition: var(--transition);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--secondary);
        }
        .show-mobile {
            display: flex;
        }
        @media (min-width: 1024px) {
            .show-mobile {
                display: none;
            }
        }

        /* ===== Hero Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(30, 58, 95, 0.7)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-subtle);
        }
        .hero-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
        }
        .hero-banner p {
            font-size: 1.05rem;
            color: var(--text-gray);
            max-width: 640px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .hero-banner {
                min-height: 380px;
            }
            .hero-banner h1 {
                font-size: 2.8rem;
            }
        }

        /* ===== Responsive Grid Helpers ===== */
        .grid-2 {
            display: grid;
            gap: 1.5rem;
            grid-template-columns: 1fr;
        }
        .grid-3 {
            display: grid;
            gap: 1.5rem;
            grid-template-columns: 1fr;
        }
        @media (min-width: 640px) {
            .grid-2 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* ===== Misc ===== */
        .divider {
            height: 1px;
            background: var(--border-subtle);
            width: 100%;
        }
        .text-gradient {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .glass {
            background: rgba(30, 41, 59, 0.6);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-subtle);
        }

        /* ===== Focus / Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== Platform Icon Cards ===== */
        .platform-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(245, 158, 11, 0.12);
            color: var(--secondary);
            transition: var(--transition);
        }
        .card:hover .platform-icon {
            background: var(--secondary);
            color: #0f172a;
        }

/* roulang page: article */
:root {
            --primary: #facc15;
            --primary-dark: #eab308;
            --primary-light: #fef08a;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --text-white: #ffffff;
            --text-gray: #94a3b8;
            --text-muted: #64748b;
            --border-subtle: rgba(255,255,255,0.06);
            --border-card: rgba(255,255,255,0.08);
            --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width:100%; height:auto; display:block; border-radius: var(--radius-md); }
        button { cursor:pointer; font-family:inherit; }

        .container { max-width:1200px; margin:0 auto; padding:0 1.25rem; }
        @media (min-width:768px) { .container { padding:0 2rem; } }
        @media (min-width:1024px) { .container { padding:0 2.5rem; } }

        /* Navigation */
        .nav-link { position:relative; font-weight:500; letter-spacing:0.01em; transition:var(--transition); }
        .nav-link::after { content:''; position:absolute; left:0; bottom:-4px; width:0; height:2px; background:var(--primary); border-radius:2px; transition:var(--transition); }
        .nav-link:hover::after, .nav-link.active::after { width:100%; }
        .nav-link.active { color:#fff !important; }

        .mobile-nav { max-height:0; overflow:hidden; transition:max-height 0.4s ease; background:rgba(15,23,42,0.98); backdrop-filter:blur(12px); }
        .mobile-nav.open { max-height:400px; }
        .mobile-nav a { display:block; padding:0.85rem 1.5rem; color:#cbd5e1; font-size:0.95rem; border-bottom:1px solid rgba(255,255,255,0.04); transition:var(--transition); }
        .mobile-nav a:hover, .mobile-nav a.active { color:#fff; background:rgba(255,255,255,0.04); padding-left:2rem; }

        /* Buttons */
        .btn { display:inline-flex; align-items:center; gap:0.5rem; font-weight:600; border-radius:var(--radius-md); transition:var(--transition); border:none; outline:none; }
        .btn-sm { padding:0.5rem 1.2rem; font-size:0.85rem; }
        .btn-md { padding:0.7rem 1.6rem; font-size:0.95rem; }
        .btn-lg { padding:0.9rem 2.2rem; font-size:1.05rem; }
        .btn-primary { background:var(--primary); color:#0f172a; }
        .btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 24px rgba(250,204,21,0.25); }
        .btn-secondary { background:rgba(255,255,255,0.08); color:#fff; border:1px solid rgba(255,255,255,0.12); }
        .btn-secondary:hover { background:rgba(255,255,255,0.14); transform:translateY(-2px); }
        .btn-outline { background:transparent; color:var(--primary); border:1.5px solid var(--primary); }
        .btn-outline:hover { background:var(--primary); color:#0f172a; transform:translateY(-2px); }

        /* Cards */
        .card { background:var(--bg-card); border:1px solid var(--border-card); border-radius:var(--radius-lg); overflow:hidden; transition:var(--transition); }
        .card:hover { transform:translateY(-4px); box-shadow:var(--shadow-card); border-color:rgba(250,204,21,0.15); }
        .card-img { aspect-ratio:16/9; overflow:hidden; }
        .card-img img { width:100%; height:100%; object-fit:cover; transition:transform 0.5s ease; }
        .card:hover .card-img img { transform:scale(1.05); }
        .card-body { padding:1.25rem; }
        .card-title { font-size:1.05rem; font-weight:700; line-height:1.4; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
        .card-text { color:var(--text-gray); font-size:0.9rem; margin-top:0.5rem; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }

        /* Badges & Tags */
        .badge { display:inline-block; padding:0.2rem 0.75rem; font-size:0.75rem; font-weight:600; border-radius:999px; background:rgba(250,204,21,0.12); color:var(--primary); border:1px solid rgba(250,204,21,0.15); }
        .badge-sm { padding:0.15rem 0.6rem; font-size:0.7rem; }
        .tag { display:inline-block; padding:0.25rem 0.8rem; font-size:0.8rem; border-radius:var(--radius-sm); background:rgba(255,255,255,0.06); color:var(--text-gray); border:1px solid rgba(255,255,255,0.06); transition:var(--transition); }
        .tag:hover { background:rgba(250,204,21,0.1); color:var(--primary); border-color:rgba(250,204,21,0.2); }

        /* Footer */
        .footer-link { color:#94a3b8; font-size:0.9rem; transition:var(--transition); display:inline-block; padding:0.2rem 0; }
        .footer-link:hover { color:#fff; transform:translateX(4px); }

        /* Article Content */
        .article-body { font-size:1.05rem; line-height:1.9; color:#e2e8f0; }
        .article-body h2 { font-size:1.5rem; font-weight:700; margin:2rem 0 1rem; color:#fff; }
        .article-body h3 { font-size:1.2rem; font-weight:600; margin:1.5rem 0 0.8rem; color:#f1f5f9; }
        .article-body p { margin-bottom:1.2rem; }
        .article-body ul, .article-body ol { margin:1rem 0; padding-left:1.5rem; }
        .article-body li { margin-bottom:0.5rem; }
        .article-body a { color:var(--primary); text-decoration:underline; text-underline-offset:2px; }
        .article-body a:hover { color:var(--primary-light); }
        .article-body blockquote { border-left:4px solid var(--primary); padding:1rem 1.5rem; margin:1.5rem 0; background:rgba(250,204,21,0.05); border-radius:0 var(--radius-sm) var(--radius-sm) 0; color:#cbd5e1; }
        .article-body img { border-radius:var(--radius-md); margin:1.5rem auto; }
        .article-body pre { background:rgba(0,0,0,0.3); padding:1.25rem; border-radius:var(--radius-md); overflow-x:auto; font-size:0.9rem; margin:1.5rem 0; border:1px solid rgba(255,255,255,0.06); }

        /* Breadcrumb */
        .breadcrumb { display:flex; flex-wrap:wrap; align-items:center; gap:0.4rem; font-size:0.85rem; color:var(--text-gray); }
        .breadcrumb a { color:var(--text-gray); transition:var(--transition); }
        .breadcrumb a:hover { color:var(--primary); }
        .breadcrumb span.sep { color:var(--text-muted); }

        /* Section spacing */
        .section { padding:4rem 0; }
        .section-title { font-size:1.75rem; font-weight:800; margin-bottom:0.5rem; letter-spacing:-0.01em; }
        .section-subtitle { color:var(--text-gray); font-size:1rem; max-width:600px; }

        /* Divider */
        .divider { width:60px; height:3px; background:var(--primary); border-radius:4px; margin:1rem 0 1.5rem; }

        /* FAQ */
        .faq-item { border-bottom:1px solid rgba(255,255,255,0.06); padding:1.1rem 0; cursor:pointer; }
        .faq-question { display:flex; justify-content:space-between; align-items:center; font-weight:600; font-size:1rem; color:#f1f5f9; }
        .faq-question i { color:var(--primary); transition:transform 0.3s ease; font-size:0.9rem; }
        .faq-item.open .faq-question i { transform:rotate(180deg); }
        .faq-answer { max-height:0; overflow:hidden; transition:max-height 0.4s ease, padding 0.3s ease; color:#94a3b8; font-size:0.92rem; line-height:1.7; }
        .faq-item.open .faq-answer { max-height:300px; padding-top:0.75rem; }

        /* Share buttons */
        .share-btn { display:inline-flex; align-items:center; justify-content:center; width:2.4rem; height:2.4rem; border-radius:var(--radius-sm); background:rgba(255,255,255,0.06); color:#94a3b8; border:1px solid rgba(255,255,255,0.06); transition:var(--transition); }
        .share-btn:hover { background:var(--primary); color:#0f172a; border-color:var(--primary); transform:translateY(-2px); }

        /* Responsive */
        @media (max-width:768px) {
            .section { padding:2.5rem 0; }
            .section-title { font-size:1.4rem; }
            .article-body { font-size:0.98rem; }
            .article-body h2 { font-size:1.25rem; }
            .card-title { font-size:0.95rem; }
            .show-mobile { display:flex !important; }
        }
        @media (min-width:769px) {
            .show-mobile { display:none !important; }
        }
        @media (max-width:520px) {
            .container { padding:0 1rem; }
            .section { padding:2rem 0; }
            .section-title { font-size:1.2rem; }
            .breadcrumb { font-size:0.78rem; }
        }

        /* Animations */
        .fade-up { opacity:0; transform:translateY(20px); transition:opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.show { opacity:1; transform:translateY(0); }

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

        /* Article meta */
        .meta-item { display:flex; align-items:center; gap:0.4rem; color:var(--text-gray); font-size:0.85rem; }
        .meta-item i { width:1rem; text-align:center; color:var(--text-muted); }

        /* Hero overlay */
        .hero-overlay { position:absolute; inset:0; background:linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.6) 60%, rgba(15,23,42,0.3) 100%); }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a4f7a;
            --primary-dark: #0f2335;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #f8fafc;
            --text-white: #f1f5f9;
            --text-light: #cbd5e1;
            --text-muted: #94a3b8;
            --border-subtle: rgba(255,255,255,0.08);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            background: #fff;
            color: #1e293b;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }

        /* ===== Header & Nav ===== */
        .nav-link { position: relative; font-weight: 500; letter-spacing: 0.02em; transition: var(--transition); }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0; bottom: -4px;
            width: 0; height: 2px;
            background: var(--secondary);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-link:hover::after,
        .nav-link.active::after { width: 100%; }
        .nav-link.active { color: #fff !important; }
        .mobile-nav {
            max-height: 0; overflow: hidden;
            background: rgba(15,23,42,0.98);
            backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255,255,255,0.06);
            transition: max-height 0.45s ease;
        }
        .mobile-nav.open { max-height: 400px; }
        .mobile-nav a {
            display: block; padding: 0.9rem 1.5rem;
            color: var(--text-light); font-size: 0.95rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            transition: var(--transition);
        }
        .mobile-nav a:hover, .mobile-nav a.active { color: #fff; background: rgba(255,255,255,0.05); }

        /* ===== Button System ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 0.5rem;
            padding: 0.625rem 1.5rem; border-radius: var(--radius-md);
            font-weight: 600; font-size: 0.9rem; letter-spacing: 0.01em;
            transition: var(--transition); border: none; cursor: pointer;
        }
        .btn-primary { background: var(--secondary); color: #0f172a; }
        .btn-primary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.35); }
        .btn-secondary { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.15); }
        .btn-secondary:hover { background: rgba(255,255,255,0.20); transform: translateY(-2px); }
        .btn-outline { background: transparent; border: 2px solid var(--secondary); color: var(--secondary); }
        .btn-outline:hover { background: var(--secondary); color: #0f172a; transform: translateY(-2px); }
        .btn-sm { padding: 0.45rem 1.1rem; font-size: 0.8rem; border-radius: var(--radius-sm); }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex; align-items: center; gap: 0.35rem;
            padding: 0.3rem 0.85rem; border-radius: 999px;
            font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em;
        }
        .badge-yellow { background: rgba(245,158,11,0.15); color: #d97706; }
        .badge-blue { background: rgba(6,182,212,0.15); color: #0891b2; }
        .badge-green { background: rgba(16,185,129,0.15); color: #059669; }
        .badge-red { background: rgba(239,68,68,0.15); color: #dc2626; }
        .badge-purple { background: rgba(139,92,246,0.15); color: #7c3aed; }

        /* ===== Card ===== */
        .card {
            background: #fff; border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card); transition: var(--transition);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-dark { background: var(--bg-card); color: var(--text-white); }

        /* ===== Section Spacing ===== */
        .section { padding: 4rem 0; }
        .section-title { font-size: 1.85rem; font-weight: 800; line-height: 1.3; letter-spacing: -0.01em; }
        .section-subtitle { font-size: 1rem; color: var(--text-muted); max-width: 640px; }

        /* ===== Stats Block ===== */
        .stat-number { font-size: 2.5rem; font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--secondary), #f97316); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        /* ===== FAQ ===== */
        .faq-item { border-bottom: 1px solid rgba(255,255,255,0.08); }
        .faq-question { cursor: pointer; font-weight: 600; transition: var(--transition); }
        .faq-question:hover { color: var(--secondary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
        .faq-answer.open { max-height: 300px; }
        .faq-arrow { transition: transform 0.3s ease; }
        .faq-item.open .faq-arrow { transform: rotate(180deg); }

        /* ===== Hero / Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 42vh;
            display: flex; align-items: center;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #0f2335 100%);
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .hero-banner .overlay { position: absolute; inset: 0; background: rgba(15,23,42,0.55); }

        /* ===== Feature Grid ===== */
        .feature-icon {
            width: 56px; height: 56px; border-radius: var(--radius-md);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.5rem; background: rgba(245,158,11,0.12); color: var(--secondary);
            transition: var(--transition);
        }
        .card:hover .feature-icon { background: var(--secondary); color: #0f172a; }

        /* ===== Timeline ===== */
        .timeline-line { position: relative; padding-left: 2.5rem; }
        .timeline-line::before {
            content: '';
            position: absolute; left: 0.6rem; top: 0.4rem; bottom: 0;
            width: 2px; background: linear-gradient(to bottom, var(--secondary), var(--accent));
            border-radius: 2px;
        }
        .timeline-dot {
            position: absolute; left: 0; top: 0.2rem;
            width: 1.25rem; height: 1.25rem; border-radius: 50%;
            background: var(--secondary); border: 3px solid #0f172a;
            box-shadow: 0 0 0 3px rgba(245,158,11,0.3);
        }

        /* ===== Footer ===== */
        .footer-link { color: var(--text-muted); font-size: 0.9rem; transition: var(--transition); display: inline-block; padding: 0.2rem 0; }
        .footer-link:hover { color: var(--secondary); transform: translateX(4px); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: #1e293b; }
        ::-webkit-scrollbar-thumb { background: var(--secondary); border-radius: 6px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .section-title { font-size: 1.6rem; }
            .stat-number { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .section { padding: 2.5rem 0; }
            .section-title { font-size: 1.4rem; }
            .hero-banner { min-height: 32vh; }
            .stat-number { font-size: 1.8rem; }
            .hide-mobile { display: none !important; }
            .show-mobile { display: flex !important; }
        }
        @media (min-width: 769px) {
            .show-mobile { display: none !important; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 1rem; padding-right: 1rem; }
            .section-title { font-size: 1.25rem; }
            .btn { padding: 0.5rem 1.1rem; font-size: 0.8rem; }
        }

        /* ===== Utility Overrides ===== */
        .text-shadow { text-shadow: 0 2px 12px rgba(0,0,0,0.3); }
        .bg-grid { background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px); background-size: 24px 24px; }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a4f7f;
            --primary-dark: #0f2744;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #f8fafc;
            --text-white: #ffffff;
            --text-light: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dark: #1e293b;
            --border-light: rgba(255, 255, 255, 0.08);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            background: var(--bg-dark);
            color: var(--text-light);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Navigation Overrides ===== */
        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 4px 0;
            transition: var(--transition);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--accent) !important;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-size: 0.875rem;
        }

        .btn-primary {
            background: var(--accent);
            color: #0f172a;
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 1.5px solid var(--accent);
        }

        .btn-outline:hover {
            background: var(--accent);
            color: #0f172a;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.8rem;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1rem;
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }

        .mobile-nav a:last-child {
            border-bottom: none;
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
        }

        .show-mobile {
            display: none;
        }

        @media (max-width: 1023px) {
            .show-mobile {
                display: flex !important;
            }
        }

        /* ===== Hero Section ===== */
        .hero-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #0f2744 100%);
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }

        .hero-banner .overlay-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.6) 50%, rgba(15, 23, 42, 0.3) 100%);
        }

        .hero-banner .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        /* ===== Cards ===== */
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            border-color: rgba(245, 158, 11, 0.2);
        }

        .feature-card {
            background: rgba(30, 41, 59, 0.6);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: rgba(30, 41, 59, 0.9);
            border-color: rgba(245, 158, 11, 0.15);
            transform: translateY(-4px);
        }

        /* ===== Stats ===== */
        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        /* ===== Tags / Badges ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
        }

        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: #60a5fa;
        }

        .badge-green {
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.15);
        }

        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-item .faq-question i {
            color: var(--accent);
            transition: var(--transition);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding-top: 0;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f2744 0%, #1e3a5f 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }

        /* ===== Footer ===== */
        .footer-link {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-block;
            padding: 4px 0;
        }

        .footer-link:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .hero-banner {
                min-height: 320px;
            }
        }

        @media (max-width: 520px) {
            .section-padding {
                padding: 40px 0;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .hero-banner {
                min-height: 280px;
            }
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0f172a;
        }
        ::-webkit-scrollbar-thumb {
            background: #334155;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #475569;
        }

        /* ===== Divider ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px 0 20px;
        }

        /* ===== Timeline ===== */
        .timeline-step {
            display: flex;
            gap: 20px;
            padding: 16px 0;
            position: relative;
        }

        .timeline-step:not(:last-child)::after {
            content: '';
            position: absolute;
            left: 18px;
            top: 48px;
            bottom: -8px;
            width: 2px;
            background: rgba(245, 158, 11, 0.2);
        }

        .timeline-step .step-number {
            flex-shrink: 0;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.15);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent);
        }