/* roulang page: index */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::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: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }
        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }
        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }
        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .mobile-menu a.active {
            color: var(--accent);
        }
        .mobile-menu .nav-cta {
            text-align: center;
            margin-top: 4px;
            display: inline-block;
            width: auto;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: 64px;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.88) 0%, rgba(11, 14, 20, 0.6) 40%, rgba(11, 14, 20, 0.5) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            width: 100%;
            padding: 60px 0;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1 1 500px;
            max-width: 620px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }
        .hero-text h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 900;
            line-height: 1.15;
            margin: 0 0 18px;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .hero-text h1 .highlight {
            color: var(--accent);
        }
        .hero-text .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text2);
            line-height: 1.6;
            margin: 0 0 28px;
            max-width: 520px;
        }
        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 13px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: translateY(-2px);
            text-decoration: none;
            color: #0B0E14;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--text);
            padding: 13px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            border: 2px solid var(--border);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
        }
        .hero-stats {
            flex: 0 0 auto;
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            z-index: 2;
            position: relative;
        }
        .hero-stat {
            text-align: center;
            background: rgba(20, 24, 34, 0.75);
            backdrop-filter: blur(8px);
            border-radius: 12px;
            padding: 24px 28px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            min-width: 110px;
        }
        .hero-stat .stat-num {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            display: block;
            margin-bottom: 6px;
        }
        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text2);
            letter-spacing: 0.3px;
        }

        /* Sections */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--card);
        }
        .section-darker {
            background: #0a0d12;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin: 0 0 12px;
            color: #fff;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text2);
            margin: 0 0 40px;
            max-width: 600px;
            line-height: 1.6;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header.centered {
            text-align: center;
        }
        .section-header.centered .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: #3d4455;
        }
        .card-img {
            border-radius: 6px;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .card-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-tag {
            display: inline-block;
            background: rgba(255, 94, 44, 0.15);
            color: var(--accent2);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: #fff;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--text2);
            margin: 0;
            line-height: 1.6;
        }

        /* KPI Stats */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .kpi-card {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .kpi-card:hover {
            border-color: var(--accent);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.08);
        }
        .kpi-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            display: block;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }
        .kpi-label {
            font-size: 0.85rem;
            color: var(--text2);
            letter-spacing: 0.3px;
        }

        /* Accordion */
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 10px;
            background: var(--card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .accordion-item:hover {
            border-color: #3d4455;
        }
        .accordion-trigger {
            width: 100%;
            background: none;
            border: none;
            color: var(--text);
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition);
            border-radius: 0;
        }
        .accordion-trigger:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .accordion-trigger .icon {
            font-size: 1.2rem;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--accent);
        }
        .accordion-item.open .accordion-trigger .icon {
            transform: rotate(45deg);
        }
        .accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }
        .accordion-item.open .accordion-body {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .accordion-body p {
            color: var(--text2);
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: #080b10;
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            text-align: center;
            color: var(--text2);
            font-size: 0.85rem;
        }
        .site-footer a {
            color: var(--text2);
            transition: color var(--transition);
            text-decoration: none;
        }
        .site-footer a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }
        .footer-divider {
            width: 40px;
            height: 2px;
            background: var(--border);
            margin: 16px auto;
            border-radius: 1px;
        }
        .footer-info {
            font-size: 0.8rem;
            color: #5a6070;
            line-height: 1.8;
        }

        /* News list */
        .news-featured {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card);
            border: 1px solid var(--border);
        }
        .news-featured img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .news-featured-content {
            padding: 20px;
        }
        .news-featured-content .date {
            font-size: 0.78rem;
            color: var(--accent);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .news-featured-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .news-featured-content p {
            font-size: 0.9rem;
            color: var(--text2);
            margin: 0 0 12px;
            line-height: 1.6;
        }
        .news-list-item {
            display: flex;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            align-items: flex-start;
            transition: all var(--transition);
        }
        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.01);
            padding-left: 8px;
            border-radius: 4px;
        }
        .news-list-item .date-badge {
            flex-shrink: 0;
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 8px 10px;
            text-align: center;
            font-size: 0.7rem;
            color: var(--text2);
            min-width: 50px;
            line-height: 1.3;
        }
        .news-list-item .date-badge strong {
            display: block;
            font-size: 1.1rem;
            color: var(--accent);
            font-weight: 700;
        }
        .news-list-item .news-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 4px;
        }
        .news-list-item .news-info p {
            font-size: 0.82rem;
            color: var(--text2);
            margin: 0;
            line-height: 1.5;
        }

        /* Testimonial */
        .testimonial-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
        }
        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 10px;
            left: 16px;
            font-size: 4rem;
            color: rgba(0, 240, 255, 0.08);
            line-height: 1;
            font-weight: 900;
            pointer-events: none;
        }
        .testimonial-card:hover {
            border-color: #3d4455;
            box-shadow: var(--shadow-hover);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text2);
            line-height: 1.7;
            margin: 0 0 16px;
            position: relative;
            z-index: 1;
        }
        .testimonial-card .author {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
        }
        .testimonial-card .author-role {
            font-size: 0.78rem;
            color: var(--text2);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-section {
                min-height: 500px;
            }
            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: 32px;
            }
            .hero-text {
                max-width: 100%;
            }
            .hero-text .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .section {
                padding: 56px 0;
            }
            .kpi-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero-section {
                min-height: 420px;
                margin-top: 56px;
            }
            .hero-content {
                padding: 40px 0;
                gap: 24px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat {
                padding: 16px 20px;
                min-width: 90px;
            }
            .hero-stat .stat-num {
                font-size: 1.6rem;
            }
            .section {
                padding: 40px 0;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .kpi-num {
                font-size: 2rem;
            }
            .container {
                padding: 0 16px;
            }
            .nav-inner {
                padding: 0 16px;
                height: 56px;
            }
            .mobile-menu {
                top: 56px;
            }
            .news-featured img {
                aspect-ratio: 16/8;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                min-height: 360px;
            }
            .hero-stat {
                padding: 12px 14px;
                min-width: 70px;
            }
            .hero-stat .stat-num {
                font-size: 1.3rem;
            }
            .hero-stat .stat-label {
                font-size: 0.7rem;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .btn-primary,
            .btn-secondary {
                padding: 11px 20px;
                font-size: 0.85rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                text-align: center;
            }
        }

        /* Animations */
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
            }
            50% {
                box-shadow: 0 0 22px rgba(0, 240, 255, 0.6);
            }
        }
        .pulse-glow {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

        /* Divider */
        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin: 0 0 20px;
            opacity: 0.7;
        }
        .section-header.centered .section-divider {
            margin: 0 auto 20px;
        }

/* roulang page: category1 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }
        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }
        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }
        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }
        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }
        .mobile-menu .nav-cta {
            display: inline-block;
            text-align: center;
            margin-top: 4px;
        }
        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }
        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none;
            color: #0B0E14;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--accent);
            padding: 13px 30px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid var(--accent);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--glow);
            text-decoration: none;
            color: #5cf5ff;
            border-color: #5cf5ff;
        }
        .btn-accent2 {
            display: inline-block;
            background: var(--accent2);
            color: #fff;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-accent2:hover {
            background: #ff7a50;
            box-shadow: var(--glow-orange);
            transform: scale(1.03);
            text-decoration: none;
            color: #fff;
        }
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: #3d4555;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px;
        }
        .tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .tag-orange {
            background: rgba(255, 94, 44, 0.12);
            color: var(--accent2);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text2);
            margin-bottom: 40px;
            max-width: 700px;
        }
        .data-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            letter-spacing: -0.5px;
        }
        .data-label {
            font-size: 0.9rem;
            color: var(--text2);
            margin-top: 6px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item summary {
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-item .faq-arrow {
            font-size: 1.2rem;
            transition: transform var(--transition);
            color: var(--accent);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item[open] .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 20px 18px 20px;
            color: var(--text2);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item[open] {
            border-color: #3d4555;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.04);
        }
        .site-footer {
            background: #080b10;
            border-top: 1px solid var(--border);
            padding: 40px 24px 30px;
            text-align: center;
            color: var(--text2);
            font-size: 0.9rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 16px;
        }
        .footer-links a {
            color: var(--text2);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .footer-divider {
            width: 60px;
            height: 1px;
            background: var(--border);
            margin: 16px auto;
        }
        .footer-info {
            font-size: 0.8rem;
            color: #6b7280;
            line-height: 1.8;
        }
        .footer-info a {
            color: #6b7280;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-info a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .section-title {
                font-size: 1.7rem;
            }
            .data-number {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .desktop-only {
                display: none !important;
            }
            .hamburger {
                display: block;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .data-number {
                font-size: 2rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-accent2 {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .card-body {
                padding: 16px;
            }
        }
        @media (max-width: 520px) {
            .nav-inner {
                padding: 0 16px;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .data-number {
                font-size: 1.7rem;
            }
            .container {
                padding: 0 16px;
            }
        }
        .hero-overlay {
            background: linear-gradient(to bottom, rgba(11, 14, 20, 0.55) 0%, rgba(11, 14, 20, 0.78) 50%, rgba(11, 14, 20, 0.94) 100%);
        }
        .glow-line {
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            border-radius: 1px;
            width: 60px;
            margin-bottom: 20px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }
        .scenario-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .scenario-card:hover {
            border-color: var(--accent);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.08);
        }

/* roulang page: category2 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }

        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }

        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .mobile-menu a.nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            text-align: center;
            font-weight: 700;
            margin-top: 4px;
            padding: 12px 22px !important;
        }

        .mobile-menu a.nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
        }

        /* Footer */
        .site-footer {
            background: var(--card);
            border-top: 1px solid var(--border);
            padding: 48px 0 36px;
            text-align: center;
            color: var(--text2);
            font-size: 0.9rem;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .site-footer .footer-links a {
            color: var(--text2);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .site-footer .footer-divider {
            width: 60px;
            height: 2px;
            background: var(--border);
            margin: 0 auto 20px;
            border-radius: 1px;
        }

        .site-footer .footer-info {
            font-size: 0.8rem;
            color: #6b7280;
            line-height: 1.8;
        }

        .site-footer .footer-info a {
            color: #6b7280;
            text-decoration: none;
            transition: color var(--transition);
        }

        .site-footer .footer-info a:hover {
            color: var(--accent);
        }

        /* Section styles */
        .section {
            padding: 80px 0;
        }

        .section-sm {
            padding: 50px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text2);
            margin-bottom: 40px;
            max-width: 700px;
        }

        /* Card */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: #3a4050;
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--card2);
        }

        .card-body {
            padding: 20px;
        }

        .card-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .card-tag.orange {
            background: rgba(255, 94, 44, 0.1);
            color: var(--accent2);
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 0.9rem;
            color: var(--text2);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            text-decoration: none;
            text-align: center;
        }

        .btn-accent {
            background: var(--accent);
            color: #0B0E14;
        }

        .btn-accent:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none;
            color: #0B0E14;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent);
            color: var(--accent);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--glow);
            text-decoration: none;
            color: #5cf5ff;
        }

        .btn-orange {
            background: var(--accent2);
            color: #fff;
        }

        .btn-orange:hover {
            background: #ff7a52;
            box-shadow: var(--glow-orange);
            transform: scale(1.03);
            text-decoration: none;
            color: #fff;
        }

        /* FAQ */
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: #3a4050;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1rem;
            font-weight: 600;
            padding: 18px 20px;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition);
            font-family: inherit;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--accent);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            color: var(--text2);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        /* Pagination */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--card);
            border: 1px solid var(--border);
            color: var(--text2);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .pagination .page-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            text-decoration: none;
        }

        .pagination .page-btn.active {
            background: var(--accent);
            border-color: var(--accent);
            color: #0B0E14;
            font-weight: 700;
        }

        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* Filter tags */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--card);
            border: 1px solid var(--border);
            color: var(--text2);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover,
        .filter-tag.active {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* Hero banner */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            margin-top: 64px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(11, 14, 20, 0.75) 0%, rgba(11, 14, 20, 0.9) 100%);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
        }

        /* Highlight comparison */
        .highlight-box {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 32px;
            transition: all var(--transition);
        }

        .highlight-box:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
        }

        .highlight-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 6px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .page-hero {
                min-height: 340px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-inner {
                height: 56px;
            }
            .mobile-menu {
                top: 56px;
            }
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: 280px;
                margin-top: 56px;
            }
            .page-hero .hero-content {
                padding: 40px 0;
            }
            .highlight-number {
                font-size: 2rem;
            }
            .highlight-box {
                padding: 20px 20px;
            }
            .card-body {
                padding: 16px;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .pagination .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
                padding: 0 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .page-hero {
                min-height: 240px;
            }
            .page-hero .hero-content {
                padding: 32px 0;
            }
            .highlight-number {
                font-size: 1.6rem;
            }
            .site-footer .footer-links {
                gap: 12px;
            }
            .site-footer .footer-links a {
                font-size: 0.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }

        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links a {
            color: var(--text2);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 20px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
            flex-shrink: 0;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
        }

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

        .mobile-menu a {
            color: var(--text2);
            padding: 12px 16px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .mobile-menu a.nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            text-align: center;
            margin-top: 6px;
            font-weight: 700;
        }

        .desktop-only {
            display: block;
        }

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

        .section-padding-sm {
            padding: 50px 0;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.75) 0%, rgba(11, 14, 20, 0.55) 40%, rgba(11, 14, 20, 0.85) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 94, 44, 0.06) 0%, transparent 50%);
            z-index: 2;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: 100%;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(0, 240, 255, 0.25);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        /* Cards */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(0, 240, 255, 0.2);
        }

        .card-accent {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
            position: relative;
        }

        .card-accent::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            border-radius: var(--radius) var(--radius) 0 0;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .card-accent:hover::before {
            opacity: 1;
        }

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

        /* Buttons */
        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }

        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none;
            color: #0B0E14;
        }

        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--accent);
            padding: 13px 30px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: 2px solid var(--accent);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--glow);
            text-decoration: none;
            color: #5cf5ff;
            border-color: #5cf5ff;
        }

        .btn-orange {
            display: inline-block;
            background: var(--accent2);
            color: #fff;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            box-shadow: 0 0 0 rgba(255, 94, 44, 0);
        }

        .btn-orange:hover {
            background: #ff7a50;
            box-shadow: var(--glow-orange);
            transform: scale(1.03);
            text-decoration: none;
            color: #fff;
        }

        /* Tag */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .tag-accent {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .tag-orange {
            background: rgba(255, 94, 44, 0.1);
            color: var(--accent2);
            border: 1px solid rgba(255, 94, 44, 0.2);
        }

        /* FAQ Accordion */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--card);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
            background: rgba(0, 240, 255, 0.03);
        }

        .faq-answer {
            padding: 20px 24px;
            color: var(--text2);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* Data highlight */
        .data-highlight {
            text-align: center;
            padding: 20px;
        }

        .data-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            letter-spacing: -1px;
        }

        .data-label {
            font-size: 0.9rem;
            color: var(--text2);
            margin-top: 6px;
        }

        /* Section title */
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text2);
            max-width: 700px;
            line-height: 1.7;
        }

        .section-label {
            display: inline-block;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        /* Footer */
        .site-footer {
            background: #080b10;
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            text-align: center;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .footer-links a {
            color: var(--text2);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-divider {
            width: 60px;
            height: 2px;
            background: var(--border);
            margin: 20px auto;
        }

        .footer-info {
            font-size: 0.8rem;
            color: #5a6070;
            line-height: 1.8;
        }

        .footer-info a {
            color: #5a6070;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-info a:hover {
            color: var(--accent);
        }

        /* Process steps */
        .process-step {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            position: relative;
        }

        .process-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #0B0E14;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        /* Pricing card highlight */
        .pricing-card-highlight {
            border: 2px solid var(--accent) !important;
            position: relative;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
        }

        .pricing-card-highlight .popular-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #0B0E14;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            white-space: nowrap;
            z-index: 2;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .hero-section {
                min-height: 70vh;
                background-attachment: scroll;
            }
            .data-number {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-inner {
                height: 56px;
                padding: 0 16px;
            }
            .mobile-menu {
                top: 56px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-padding-sm {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .hero-section {
                min-height: 60vh;
                background-attachment: scroll;
            }
            .data-number {
                font-size: 2rem;
            }
            .process-step {
                flex-direction: column;
                gap: 12px;
            }
            .footer-links {
                gap: 12px;
                flex-direction: column;
                align-items: center;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 55vh;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-orange {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                text-align: center;
            }
            .data-number {
                font-size: 1.7rem;
            }
            .process-number {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

/* roulang page: category5 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }

        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }

        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .mobile-menu a.nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            text-align: center;
            font-weight: 700;
            margin-top: 4px;
            padding: 12px 22px !important;
            border-radius: 6px;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            text-decoration: none !important;
        }

        .mobile-menu a.nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }

        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: 64px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.75) 0%, rgba(11, 14, 20, 0.6) 40%, rgba(11, 14, 20, 0.88) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent);
            z-index: 2;
            animation: heroLinePulse 3s ease-in-out infinite;
        }

        @keyframes heroLinePulse {
            0%,
            100% {
                opacity: 0.5;
            }
            50% {
                opacity: 1;
            }
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 800px;
            padding: 60px 0;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .info-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 240, 255, 0.25);
        }

        .info-card .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 16px;
            background: var(--card2);
        }

        .info-card .card-tag {
            display: inline-block;
            background: rgba(255, 94, 44, 0.1);
            color: var(--accent2);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .info-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .info-card p {
            color: var(--text2);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-btn {
            display: inline-block;
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
        }

        .card-btn:hover {
            background: var(--accent);
            color: #0B0E14;
            box-shadow: var(--glow);
            text-decoration: none;
        }

        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
            padding: 20px 0;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            border: 1px solid var(--border);
            color: var(--text2);
            background: var(--card);
        }

        .pagination a:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 240, 255, 0.05);
            text-decoration: none;
        }

        .pagination .current {
            background: var(--accent);
            color: #0B0E14;
            border-color: var(--accent);
            font-weight: 700;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item summary {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-item .faq-answer {
            padding: 0 20px 18px;
            color: var(--text2);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(255, 94, 44, 0.04) 100%);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            letter-spacing: 0.3px;
        }

        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.04);
            text-decoration: none;
            color: #0B0E14;
        }

        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--accent2);
            border: 2px solid var(--accent2);
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            letter-spacing: 0.3px;
        }

        .btn-secondary:hover {
            background: var(--accent2);
            color: #fff;
            box-shadow: var(--glow-orange);
            text-decoration: none;
            transform: scale(1.03);
        }

        .stat-block {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-block .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-block .stat-label {
            font-size: 0.85rem;
            color: var(--text2);
            font-weight: 500;
        }

        .site-footer {
            background: #0a0d13;
            border-top: 1px solid var(--border);
            padding: 40px 0 24px;
            text-align: center;
            color: var(--text2);
            font-size: 0.85rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 16px;
        }

        .footer-links a {
            color: var(--text2);
            font-size: 0.85rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-divider {
            width: 60px;
            height: 2px;
            background: var(--border);
            margin: 16px auto;
            border-radius: 1px;
        }

        .footer-info {
            font-size: 0.78rem;
            color: #6b7280;
            line-height: 1.8;
        }

        .footer-info a {
            color: #6b7280;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-info a:hover {
            color: var(--accent);
            text-decoration: underline;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .hero-section {
                min-height: 55vh;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .stat-block .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hero-section {
                min-height: 50vh;
                margin-top: 56px;
            }
            .hero-content {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .pagination a,
            .pagination span {
                min-width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
            .stat-block .stat-number {
                font-size: 1.7rem;
            }
            .nav-inner {
                height: 56px;
                padding: 0 16px;
            }
            .mobile-menu {
                top: 56px;
            }
            .info-card {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 45vh;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .btn-primary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 14px;
            }
            .footer-links {
                gap: 10px;
            }
        }

/* roulang page: category4 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }

        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }

        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }

        .mobile-menu .nav-cta {
            text-align: center;
            margin-top: 6px;
            display: block;
            background: var(--accent);
            color: #0B0E14 !important;
            font-weight: 700;
            border-radius: 6px;
            padding: 12px 16px !important;
        }

        .desktop-only {
            display: inline-block;
        }

        @media (max-width: 1023px) {
            .desktop-only {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: block;
            }
        }

        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
            .hamburger {
                display: none;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: 0;
            padding-top: 64px;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.75) 0%, rgba(11, 14, 20, 0.55) 40%, rgba(11, 14, 20, 0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 900;
            line-height: 1.15;
            margin: 0 0 20px;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text2);
            margin: 0 0 36px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.04);
            text-decoration: none;
            color: #0B0E14;
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--text);
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: 2px solid var(--border);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }

        .btn-accent2 {
            display: inline-block;
            background: var(--accent2);
            color: #fff;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-accent2:hover {
            background: #ff7a52;
            box-shadow: var(--glow-orange);
            transform: scale(1.04);
            text-decoration: none;
            color: #fff;
        }

        /* Section common */
        .section {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: -0.3px;
            line-height: 1.2;
        }

        .section-desc {
            color: var(--text2);
            font-size: 1.05rem;
            max-width: 680px;
            line-height: 1.7;
            margin: 0 0 40px;
        }

        .section-desc.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* Card */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow);
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 240, 255, 0.25);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-icon.accent {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
        }

        .card-icon.accent2 {
            background: rgba(255, 94, 44, 0.1);
            color: var(--accent2);
        }

        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
        }

        .card-desc {
            color: var(--text2);
            font-size: 0.95rem;
            line-height: 1.65;
            margin: 0;
        }

        /* Stat block */
        .stat-block {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-block:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            margin: 0 0 6px;
        }

        .stat-label {
            color: var(--text2);
            font-size: 0.9rem;
            margin: 0;
        }

        /* Process steps */
        .process-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .process-step:last-child {
            border-bottom: none;
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #0B0E14;
            font-weight: 900;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-content h4 {
            margin: 0 0 6px;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .step-content p {
            margin: 0;
            color: var(--text2);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 10px;
            background: var(--card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 18px 20px;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition);
            font-family: inherit;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-question .arrow {
            transition: transform var(--transition);
            font-size: 1.2rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            color: var(--text2);
            margin: 0;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* CTA section */
        .cta-section {
            background: var(--card2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 12px;
        }

        .cta-section p {
            color: var(--text2);
            max-width: 550px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: #080b10;
            padding: 40px 0;
            text-align: center;
            border-top: 1px solid var(--border);
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 16px;
        }

        .footer-links a {
            color: var(--text2);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-divider {
            width: 60px;
            height: 2px;
            background: var(--border);
            margin: 16px auto;
            border-radius: 1px;
        }

        .footer-info {
            color: #5a6070;
            font-size: 0.8rem;
            line-height: 1.8;
        }

        .footer-info a {
            color: #5a6070;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-info a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section {
                padding: 50px 0;
            }
            .hero-section {
                min-height: 70vh;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 640px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-outline,
            .hero-cta-group .btn-accent2 {
                width: 100%;
                text-align: center;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section {
                padding: 40px 0;
            }
            .hero-section {
                min-height: 60vh;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .process-step {
                flex-direction: column;
                gap: 10px;
            }
            .card {
                padding: 20px;
            }
            .btn-primary,
            .btn-outline,
            .btn-accent2 {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        /* Image card */
        .img-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }

        .img-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 240, 255, 0.25);
        }

        .img-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        .img-card-body {
            padding: 20px;
        }

        .img-card-body h4 {
            margin: 0 0 8px;
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
        }

        .img-card-body p {
            margin: 0;
            color: var(--text2);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .glow-border {
            position: relative;
        }

        .glow-border::after {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: 9px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), transparent 60%);
            z-index: -1;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .glow-border:hover::after {
            opacity: 1;
        }

        /* Tag */
        .tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-right: 6px;
            margin-bottom: 6px;
        }

        .tag.orange {
            background: rgba(255, 94, 44, 0.08);
            color: var(--accent2);
        }

/* roulang page: category6 */
:root {
            --bg: #0B0E14;
            --card: #141822;
            --card2: #1A1E2B;
            --accent: #00F0FF;
            --accent2: #FF5E2C;
            --text: #F0F4FA;
            --text2: #9CA3AF;
            --border: #2D3340;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-orange: 0 0 15px rgba(255, 94, 44, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #5cf5ff;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }
        input,
        textarea {
            font-family: inherit;
            background-color: var(--card);
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius);
            padding: 12px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }
        input::placeholder,
        textarea::placeholder {
            color: #5a6070;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-nav.scrolled {
            background: rgba(11, 14, 20, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0B0E14;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text2);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }
        .nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            padding: 10px 22px !important;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
        }
        .nav-cta:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none !important;
            color: #0B0E14 !important;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text2);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }
        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.06);
        }
        .mobile-menu a.nav-cta {
            background: var(--accent);
            color: #0B0E14 !important;
            text-align: center;
            font-weight: 700;
            margin-top: 4px;
            padding: 12px 14px !important;
        }

        /* Hero Bento */
        .hero-bento {
            padding-top: 100px;
            padding-bottom: 60px;
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }
        .hero-bento::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(11, 14, 20, 0.82) 0%, rgba(11, 14, 20, 0.7) 40%, rgba(11, 14, 20, 0.9) 100%);
            z-index: 1;
        }
        .hero-bento .container {
            position: relative;
            z-index: 2;
        }
        .bento-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }
        .bento-main {
            grid-row: 1 / 3;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 40px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--shadow);
        }
        .bento-side-top {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .bento-side-top:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .bento-side-bottom {
            background: var(--card2);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .bento-side-bottom:hover {
            border-color: var(--accent2);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .bento-cta-bar {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(255, 94, 44, 0.08) 100%);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 22px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            box-shadow: var(--shadow);
        }

        /* Section common */
        .section {
            padding: 72px 0;
        }
        .section-dark {
            background: var(--card);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text2);
            margin-bottom: 40px;
            max-width: 700px;
        }
        .section-title-accent {
            color: var(--accent);
        }

        /* Cards */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .card-img-top {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 18px;
            aspect-ratio: 16/10;
        }
        .card-img-top img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img-top img {
            transform: scale(1.04);
        }
        .card-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card-tag-orange {
            background: rgba(255, 94, 44, 0.1);
            color: var(--accent2);
        }

        /* Buttons */
        .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #0B0E14;
            padding: 13px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 0 rgba(0, 240, 255, 0);
            text-align: center;
        }
        .btn-primary:hover {
            background: #3df5ff;
            box-shadow: var(--glow);
            transform: scale(1.03);
            text-decoration: none;
            color: #0B0E14;
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--accent);
            padding: 12px 26px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            border: 2px solid var(--accent);
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--glow);
            text-decoration: none;
            color: var(--accent);
        }
        .btn-orange {
            display: inline-block;
            background: var(--accent2);
            color: #fff;
            padding: 13px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-orange:hover {
            background: #ff7a50;
            box-shadow: var(--glow-orange);
            transform: scale(1.03);
            text-decoration: none;
            color: #fff;
        }

        /* Stat numbers */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            letter-spacing: -0.5px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text2);
            margin-top: 4px;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 10px;
            background: var(--card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.12);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text);
            padding: 18px 22px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition);
            border-radius: 0;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--accent2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--text2);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        /* Highlight box */
        .highlight-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(0, 240, 255, 0.01) 100%);
            border-left: 3px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }

        /* Timeline */
        .timeline-dot {
            width: 12px;
            height: 12px;
            background: var(--accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
            position: relative;
            z-index: 2;
        }
        .timeline-line {
            position: absolute;
            left: 5px;
            top: 18px;
            bottom: 0;
            width: 2px;
            background: var(--border);
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #080a10;
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            text-align: center;
            color: var(--text2);
            font-size: 0.9rem;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px;
            margin-bottom: 20px;
        }
        .site-footer .footer-links a {
            color: var(--text2);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .footer-divider {
            width: 60px;
            height: 1px;
            background: var(--border);
            margin: 0 auto 20px;
            opacity: 0.6;
        }
        .footer-info {
            font-size: 0.8rem;
            color: #6b7280;
            line-height: 1.8;
        }
        .footer-info a {
            color: #6b7280;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-info a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .bento-main {
                grid-row: auto;
                grid-column: 1 / -1;
            }
            .bento-side-top {
                grid-column: 1;
            }
            .bento-side-bottom {
                grid-column: 2;
            }
            .bento-cta-bar {
                grid-column: 1 / -1;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .bento-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .bento-main {
                grid-column: auto;
                padding: 28px 20px;
            }
            .bento-side-top,
            .bento-side-bottom {
                grid-column: auto;
                padding: 22px 18px;
            }
            .bento-cta-bar {
                grid-column: auto;
                flex-direction: column;
                text-align: center;
                padding: 18px 20px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 28px;
            }
            .hero-bento {
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .card {
                padding: 20px 16px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .site-footer .footer-links {
                gap: 10px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .nav-inner {
                padding: 0 14px;
                height: 56px;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .hero-bento {
                padding-top: 70px;
                padding-bottom: 30px;
            }
            .bento-main {
                padding: 22px 16px;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .btn-primary,
            .btn-outline,
            .btn-orange {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .container {
                padding: 0 14px;
            }
        }