/* roulang page: index */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }

        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }

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

        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }

        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }

        /* Hero Video Section */
        .hero-video-section {
            position: relative;
            margin-top: 70px;
            height: 85vh;
            min-height: 500px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-video-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            filter: brightness(0.35);
        }

        .hero-video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at center, rgba(3, 7, 18, 0.4) 0%, rgba(8, 18, 41, 0.85) 100%);
            z-index: 1;
        }

        .hero-video-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
        }

        .hero-play-btn {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow);
            animation: pulse-glow 2s infinite;
        }

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
            }
            50% {
                box-shadow: 0 0 45px rgba(56, 189, 248, 0.75);
            }
        }

        .hero-play-btn:hover {
            transform: scale(1.1);
            box-shadow: var(--shadow-glow-hover);
        }

        .hero-play-btn i {
            font-size: 2rem;
            color: #FFFFFF;
            margin-left: 4px;
        }

        .hero-video-content h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }

        .hero-video-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 650px;
            line-height: 1.7;
        }

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

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            padding: 15px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            text-decoration: none;
            cursor: pointer;
            border: none;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-hover);
        }

        .btn-outline-glow {
            background: transparent;
            border: 2px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 15px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-glow:hover {
            background: rgba(37, 99, 235, 0.15);
            transform: translateY(-3px);
        }

        /* Global Coverage Section */
        .global-coverage {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            text-align: left;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 50px;
            max-width: 700px;
            line-height: 1.7;
            text-align: left;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .stat-card {
            background: rgba(8, 18, 41, 0.6);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 40px 28px;
            text-align: left;
            transition: var(--transition-base);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .stat-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 1.05rem;
            color: var(--text-primary);
            font-weight: 600;
        }

        .stat-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 6px;
        }

        /* Scenarios Section */
        .scenarios-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .scenario-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition-base);
            position: relative;
        }

        .scenario-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }

        .scenario-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .scenario-card-body {
            padding: 24px;
        }

        .scenario-card-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .scenario-card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .scenario-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* Localization Section */
        .localization-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .local-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .local-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            transition: var(--transition-base);
        }

        .local-feature-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }

        .local-feature-icon {
            width: 50px;
            height: 50px;
            min-width: 50px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--border-radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.3rem;
        }

        .local-feature-text h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .local-feature-text p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* Case Studies Section */
        .case-studies-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .case-study-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 30px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            transition: var(--transition-base);
        }

        .case-study-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .case-study-header {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .case-study-avatar {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #FFFFFF;
            font-weight: 700;
        }

        .case-study-meta h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .case-study-meta span {
            color: var(--accent-secondary);
            font-size: 0.85rem;
        }

        .case-study-body p {
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .case-study-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .case-stat {
            display: flex;
            flex-direction: column;
        }

        .case-stat strong {
            font-size: 1.4rem;
            color: var(--accent-secondary);
        }

        .case-stat span {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* CMS Article Section */
        .articles-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .articles-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

        .articles-main-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .article-item {
            display: flex;
            gap: 20px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 20px;
            transition: var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
        }

        .article-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateX(8px);
        }

        .article-item img {
            width: 160px;
            height: 120px;
            object-fit: cover;
            border-radius: var(--border-radius-sm);
            min-width: 160px;
        }

        .article-item-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .article-item-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .article-item-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-holo);
        }

        .articles-sidebar {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 24px;
            height: fit-content;
        }

        .articles-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .sidebar-list li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition-base);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-list li a:hover {
            color: var(--accent-secondary);
            transform: translateX(4px);
        }

        .sidebar-list li a i {
            color: var(--accent-secondary);
            font-size: 0.8rem;
        }

        .btn-view-all {
            display: inline-block;
            margin-top: 30px;
            background: transparent;
            border: 2px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .btn-view-all:hover {
            background: rgba(37, 99, 235, 0.2);
            transform: translateY(-2px);
        }

        /* Coupon Wall Section */
        .coupon-wall-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .coupon-card {
            background: linear-gradient(135deg, var(--bg-secondary), #0A1A3A);
            border: 2px dashed var(--border-color);
            border-radius: var(--border-radius);
            padding: 30px;
            text-align: left;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .coupon-card::before {
            content: '';
            position: absolute;
            top: -20px;
            right: -20px;
            width: 80px;
            height: 80px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 50%;
        }

        .coupon-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }

        .coupon-value {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }

        .coupon-condition {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        .coupon-expiry {
            display: inline-block;
            background: rgba(220, 38, 38, 0.2);
            color: #EF4444;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .btn-claim {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            border: none;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            width: 100%;
        }

        .btn-claim:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: scale(1.02);
        }

        /* Guarantee Badges Section */
        .guarantee-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .badge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
        }

        .badge-item {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
            padding: 28px;
            background: var(--bg-primary);
            border-radius: var(--border-radius);
            transition: var(--transition-base);
            border: 1px solid transparent;
        }

        .badge-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }

        .badge-icon {
            font-size: 2rem;
            color: var(--accent-secondary);
        }

        .badge-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .badge-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* Brand Story Section */
        .brand-story-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .story-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .story-text h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .story-text p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .story-image {
            position: relative;
        }

        .story-image img {
            width: 100%;
            border-radius: var(--border-radius);
            border: 2px solid var(--border-color);
        }

        /* Multi-Platform Entry Section */
        .platform-entry-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
        }

        .platform-card {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .platform-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }

        .platform-icon {
            font-size: 2.5rem;
            color: var(--accent-secondary);
            margin-bottom: 12px;
        }

        .platform-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* Progress Tracker Section */
        .progress-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .progress-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            max-width: 700px;
        }

        .progress-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: var(--bg-secondary);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            transition: var(--transition-base);
        }

        .progress-item:hover {
            border-color: var(--accent-secondary);
        }

        .progress-step {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
        }

        .progress-bar-container {
            flex: 1;
            height: 6px;
            background: var(--bg-primary);
            border-radius: 3px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 3px;
            transition: width 0.5s ease;
        }

        .progress-detail h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .progress-detail span {
            font-size: 0.85rem;
            color: var(--accent-secondary);
        }

        /* Tag Cloud Section */
        .tag-cloud-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .tag-link {
            display: inline-block;
            padding: 8px 20px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .tag-link:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            transform: translateY(-2px);
        }

        /* Contact Sales Section */
        .contact-sales-section {
            padding: 100px 0;
            background: var(--bg-primary);
            text-align: center;
        }

        .contact-box {
            max-width: 600px;
            margin: 0 auto;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 50px 40px;
        }

        .contact-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .contact-box p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 14px;
            margin-bottom: 16px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: var(--transition-base);
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }

        .contact-form textarea {
            resize: vertical;
            min-height: 120px;
        }

        /* Footer */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--accent-secondary);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition-base);
            text-decoration: none;
        }

        .footer-social a:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }

        /* FAB */
        .fab-container {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 50;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .fab-main {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            position: relative;
            animation: fab-breathe 3s infinite;
        }

        @keyframes fab-breathe {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
            }
            50% {
                box-shadow: 0 0 35px rgba(56, 189, 248, 0.75);
            }
        }

        .fab-main:hover {
            transform: scale(1.1);
            box-shadow: var(--shadow-glow-hover);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.3);
                opacity: 0.7;
            }
        }

        .fab-label {
            font-size: 0.8rem;
            color: var(--accent-secondary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .articles-layout {
                grid-template-columns: 1fr;
            }
            .story-content {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-auth-btns {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-video-content h1 {
                font-size: 2.2rem;
            }
            .hero-video-content p {
                font-size: 1rem;
            }
            .hero-video-section {
                height: 70vh;
            }
            .section-title {
                font-size: 2rem;
            }
            .article-item {
                flex-direction: column;
            }
            .article-item img {
                width: 100%;
                height: 180px;
            }
            .coupon-grid,
            .badge-grid,
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .contact-box {
                padding: 30px 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-video-content h1 {
                font-size: 1.8rem;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                width: 100%;
                justify-content: center;
            }
            .coupon-grid,
            .badge-grid,
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }

        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }

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

        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }

        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }

        .page-banner {
            margin-top: 70px;
            position: relative;
            height: 320px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(3,7,18,0.7) 0%, rgba(8,18,41,0.9) 100%);
            z-index: 1;
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
        }

        .page-banner-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
        }

        .page-banner-content .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .breadcrumb a {
            color: var(--accent-secondary);
            text-decoration: none;
            transition: var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--text-holo);
        }

        .breadcrumb span {
            color: var(--text-secondary);
        }

        .article-main {
            padding: 60px 0;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 40px;
            transition: var(--transition-base);
        }

        .article-content:hover {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: var(--shadow-glow);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
            flex-wrap: wrap;
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-meta-item i {
            color: var(--accent-secondary);
        }

        .article-category-tag {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
        }

        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 40px 0 20px;
            padding-left: 16px;
            border-left: 4px solid var(--accent-secondary);
        }

        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-holo);
            margin: 30px 0 16px;
        }

        .article-body p {
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 18px;
            font-size: 1.05rem;
        }

        .article-body ul, .article-body ol {
            margin: 20px 0;
            padding-left: 24px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--border-radius-sm);
            margin: 30px 0;
            border: 1px solid var(--border-color);
        }

        .article-body blockquote {
            background: rgba(37, 99, 235, 0.08);
            border-left: 4px solid var(--accent-primary);
            padding: 20px 24px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
            color: var(--text-holo);
            font-style: italic;
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .sidebar-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 24px;
            transition: var(--transition-base);
        }

        .sidebar-card:hover {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: var(--shadow-glow);
        }

        .sidebar-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--accent-secondary);
        }

        .sidebar-article-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(37, 99, 235, 0.1);
            transition: var(--transition-base);
        }

        .sidebar-article-item:last-child {
            border-bottom: none;
        }

        .sidebar-article-item:hover {
            transform: translateX(4px);
        }

        .sidebar-article-thumb {
            width: 70px;
            height: 70px;
            border-radius: var(--border-radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            border: 1px solid var(--border-color);
        }

        .sidebar-article-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-article-info a {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .sidebar-article-info a:hover {
            color: var(--accent-secondary);
        }

        .sidebar-article-date {
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-top: 6px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .game-info-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            overflow: hidden;
        }

        .game-info-table th {
            background: rgba(37, 99, 235, 0.15);
            color: var(--accent-secondary);
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .game-info-table td {
            padding: 14px 16px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .game-info-table tr:hover td {
            background: rgba(56, 189, 248, 0.05);
        }

        .cta-section {
            margin: 60px 0;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(56, 189, 248, 0.05));
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 40px;
            text-align: center;
        }

        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        .btn-primary-glow {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            text-decoration: none;
            font-size: 1rem;
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: none;
            cursor: pointer;
        }

        .btn-primary-glow:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-hover);
        }

        .not-found-section {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-section i {
            font-size: 4rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            display: block;
        }

        .not-found-section h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .not-found-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            color: var(--text-primary);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent-secondary);
        }

        .footer-col ul {
            list-style: none;
        }

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

        .footer-col ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--accent-secondary);
            padding-left: 4px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            text-decoration: none;
            transition: var(--transition-base);
            font-size: 1.1rem;
        }

        .footer-social a:hover {
            background: var(--accent-primary);
            color: #FFFFFF;
            border-color: var(--accent-primary);
            transform: translateY(-2px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-auth-btns {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .page-banner {
                height: 220px;
            }

            .page-banner-content h1 {
                font-size: 1.8rem;
            }

            .article-content {
                padding: 24px 16px;
            }

            .article-body h2 {
                font-size: 1.4rem;
            }

            .article-body h3 {
                font-size: 1.2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .game-info-table th,
            .game-info-table td {
                padding: 10px 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner-content h1 {
                font-size: 1.4rem;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }
        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }
        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }
        /* Hero Section */
        .hero-category {
            padding-top: 130px;
            padding-bottom: 80px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .hero-category .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-category-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-category-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 30px;
        }
        .hero-category-content .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: var(--border-radius);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow);
            text-decoration: none;
            display: inline-block;
        }
        .btn-primary-glow:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-hover);
        }
        .btn-outline-glow {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 14px 32px;
            border-radius: var(--border-radius);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }
        .btn-outline-glow:hover {
            background: rgba(37, 99, 235, 0.15);
            box-shadow: var(--shadow-glow);
        }
        .hero-category-visual {
            position: relative;
        }
        .hero-category-visual img {
            width: 100%;
            border-radius: var(--border-radius);
            box-shadow: 0 12px 40px rgba(37, 99, 235, 0.25);
            border: 1px solid var(--border-color);
        }
        .hero-category-visual::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--border-radius);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            z-index: -1;
            filter: blur(20px);
            opacity: 0.5;
        }
        /* Section Styles */
        .section {
            padding: 80px 0;
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 700px;
        }
        .section-subtitle {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-secondary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            padding: 6px 14px;
            background: rgba(37, 99, 235, 0.1);
            border-radius: 100px;
            border: 1px solid var(--border-color);
        }
        /* Feature Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }
        .feature-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 32px 24px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
            transform: translateY(-4px);
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-secondary);
            filter: blur(8px);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card i {
            font-size: 2rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
            display: block;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* Scenario Cards */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .scenario-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 28px 20px;
            transition: var(--transition-base);
        }
        .scenario-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.12);
        }
        .scenario-card .scenario-icon {
            font-size: 1.8rem;
            color: var(--accent-secondary);
            margin-bottom: 12px;
        }
        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* Platform Cards */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }
        .platform-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 0;
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .platform-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.2);
            transform: translateY(-2px);
        }
        .platform-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .platform-card-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .platform-card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .platform-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .platform-card-body .platform-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .platform-tag {
            background: rgba(37, 99, 235, 0.15);
            color: var(--accent-secondary);
            padding: 4px 12px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
        }
        .platform-card-body .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--border-radius-sm);
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            text-align: center;
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
        }
        .platform-card-body .btn-sm:hover {
            background: rgba(37, 99, 235, 0.15);
        }
        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 30px 20px;
            text-align: left;
            position: relative;
            transition: var(--transition-base);
        }
        .process-step:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.1);
        }
        .process-step .step-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
            display: block;
            line-height: 1;
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* News List */
        .news-list {
            display: grid;
            gap: 20px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 20px;
            transition: var(--transition-base);
            align-items: center;
        }
        .news-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.1);
        }
        .news-item img {
            width: 120px;
            height: 80px;
            object-fit: cover;
            border-radius: var(--border-radius-sm);
            flex-shrink: 0;
        }
        .news-item-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .news-item-content h4 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .news-item-content h4 a:hover {
            color: var(--accent-secondary);
        }
        .news-item-content p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .news-item-content .news-meta {
            font-size: 0.75rem;
            color: var(--text-holo);
            margin-top: 6px;
        }
        /* FAQ */
        .faq-list {
            display: grid;
            gap: 16px;
            max-width: 900px;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 24px;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--accent-secondary);
        }
        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 60px 40px;
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        /* Footer */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            font-size: 0.9rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-secondary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            transition: var(--transition-base);
            text-decoration: none;
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--accent-secondary);
            color: var(--bg-primary);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        /* Floating Action Button */
        .fab-btn {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            text-decoration: none;
            opacity: 0.8;
        }
        .fab-btn::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
            z-index: -1;
        }
        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.65);
            color: var(--text-primary);
        }
        .fab-btn .notification-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-category .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-category-content h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-auth-btns {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-category {
                padding-top: 100px;
                padding-bottom: 50px;
            }
            .hero-category-content h1 {
                font-size: 1.9rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-item img {
                width: 100%;
                height: 160px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .fab-btn {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }
        @media (max-width: 520px) {
            .hero-category-content h1 {
                font-size: 1.6rem;
            }
            .hero-btns {
                flex-direction: column;
                width: 100%;
            }
            .hero-btns .btn-primary-glow,
            .hero-btns .btn-outline-glow {
                width: 100%;
                text-align: center;
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }
        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }
        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }
        .page-banner {
            position: relative;
            margin-top: 70px;
            height: 50vh;
            min-height: 350px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at center, rgba(3, 7, 18, 0.3) 0%, rgba(8, 18, 41, 0.85) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }
        .page-banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }
        .strategy-card {
            background: rgba(8, 18, 41, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 32px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .strategy-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .strategy-card:hover::before {
            opacity: 1;
        }
        .strategy-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
        }
        .strategy-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .tips-flow {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .tip-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            padding: 24px;
            background: rgba(8, 18, 41, 0.4);
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-primary);
            transition: var(--transition-base);
        }
        .tip-item:hover {
            background: rgba(8, 18, 41, 0.7);
            box-shadow: var(--shadow-glow);
        }
        .tip-number {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            min-width: 60px;
            line-height: 1;
        }
        .tip-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .tip-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .video-embed-placeholder {
            aspect-ratio: 16 / 9;
            border-radius: var(--border-radius);
            overflow: hidden;
            background: var(--bg-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-color);
        }
        .video-embed-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.6);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: rgba(8, 18, 41, 0.5);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.2);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-secondary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
        }
        .faq-answer p {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .cta-section {
            text-align: center;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(56, 189, 248, 0.1));
            border-radius: var(--border-radius);
            padding: 60px 40px;
            border: 1px solid var(--border-color);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }
        .btn-primary {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            padding: 14px 36px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition-base);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            font-size: 1rem;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(56, 189, 248, 0.6);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            border: 2px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 12px 32px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition-base);
            font-size: 1rem;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(37, 99, 235, 0.15);
        }
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: rgba(8, 18, 41, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .news-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .news-card-body {
            padding: 20px;
        }
        .news-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .news-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .news-card-body .news-meta {
            font-size: 0.8rem;
            color: var(--text-holo);
        }
        .footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition-base);
            font-size: 0.95rem;
        }
        .footer-col ul li a:hover {
            color: var(--accent-secondary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition-base);
        }
        .footer-social a:hover {
            background: var(--accent-primary);
            border-color: var(--accent-primary);
            color: #FFFFFF;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-secondary);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition-base);
            opacity: 0.8;
            animation: pulse-glow 2s infinite;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.75);
        }
        @keyframes pulse-glow {
            0%, 100% { box-shadow: 0 0 20px rgba(6, 182, 212, 0.5); }
            50% { box-shadow: 0 0 35px rgba(6, 182, 212, 0.8); }
        }
        .badge-hot {
            display: inline-block;
            background: #DC2626;
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        @media (max-width: 1024px) {
            .page-banner-content h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .strategy-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-auth-btns {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .page-banner {
                height: 40vh;
                min-height: 280px;
            }
            .page-banner-content h1 {
                font-size: 1.8rem;
            }
            .page-banner-content p {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .tip-item {
                flex-direction: column;
                gap: 12px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .page-banner-content h1 {
                font-size: 1.5rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .btn-primary, .btn-outline {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }
        
        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }
        
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }
        
        .mobile-menu.active {
            display: flex;
        }
        
        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }
        
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }
        
        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }
        /* Hero Category */
        
        .hero-category {
            margin-top: 70px;
            padding: 60px 0 50px;
            position: relative;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.15) 0%, rgba(8, 18, 41, 0.9) 70%);
            border-bottom: 1px solid var(--border-color);
        }
        
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-5.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 0;
        }
        
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        
        .hero-cat-grid {
            display: grid;
            grid-template-columns: 1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }
        
        .hero-cat-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        
        .hero-cat-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #FFFFFF, var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-cat-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 24px;
        }
        
        .hero-cat-stats {
            display: flex;
            gap: 28px;
        }
        
        .hero-stat {
            text-align: left;
        }
        
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-secondary);
            line-height: 1;
        }
        
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        
        .hero-cat-image {
            position: relative;
            border-radius: var(--border-radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-glow);
        }
        
        .hero-cat-image img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        /* Sections */
        
        .section {
            padding: 60px 0;
            position: relative;
        }
        
        .section-dark {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 650px;
            line-height: 1.6;
        }
        /* Strategies Grid */
        
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        
        .strategy-card {
            background: rgba(8, 18, 41, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .strategy-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-4px);
        }
        
        .strategy-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        
        .strategy-icon {
            font-size: 2.2rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
        }
        
        .strategy-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        
        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* Tips Timeline */
        
        .tips-timeline {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: relative;
        }
        
        .tips-timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent-secondary), transparent);
        }
        
        .tip-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            position: relative;
            padding-left: 50px;
        }
        
        .tip-dot {
            position: absolute;
            left: 12px;
            top: 4px;
            width: 18px;
            height: 18px;
            background: var(--accent-secondary);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
            z-index: 1;
        }
        
        .tip-content {
            background: rgba(8, 18, 41, 0.5);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 20px 24px;
            flex: 1;
            transition: var(--transition-base);
        }
        
        .tip-content:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.3);
        }
        
        .tip-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .tip-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        /* Scenario Cards */
        
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        
        .scenario-card {
            background: rgba(8, 18, 41, 0.4);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 32px;
            transition: var(--transition-base);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        
        .scenario-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }
        
        .scenario-icon {
            font-size: 2rem;
            color: var(--accent-secondary);
            flex-shrink: 0;
            margin-top: 4px;
        }
        
        .scenario-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .scenario-card p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.6;
        }
        /* Articles List */
        
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        
        .article-card {
            background: rgba(8, 18, 41, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition-base);
        }
        
        .article-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-4px);
        }
        
        .article-card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        
        .article-card-body {
            padding: 18px;
        }
        
        .article-card-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
        }
        
        .article-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .article-card-link {
            text-decoration: none;
            color: inherit;
            display: block;
        }
        /* CTA */
        
        .cta-section {
            padding: 60px 0;
            text-align: left;
        }
        
        .cta-box {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--accent-secondary);
            border-radius: var(--border-radius);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        
        .cta-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .cta-text p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        
        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 14px 36px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.5);
            white-space: nowrap;
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(56, 189, 248, 0.7);
        }
        /* Footer */
        
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 30px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        
        .footer-col h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .footer-col ul {
            list-style: none;
        }
        
        .footer-col ul li {
            margin-bottom: 10px;
        }
        
        .footer-col ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        
        .footer-col ul li a:hover {
            color: var(--accent-secondary);
        }
        
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            color: var(--text-secondary);
            transition: var(--transition-base);
            text-decoration: none;
        }
        
        .footer-social a:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }
        /* FAB */
        
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 12px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            animation: fabPulse 2.5s infinite;
        }
        
        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 14px;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }
        
        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.7);
        }
        
        .fab i {
            font-size: 1.4rem;
            color: #06B6D4;
            z-index: 1;
        }
        
        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            }
            50% {
                box-shadow: 0 0 35px rgba(163, 230, 53, 0.5);
            }
        }
        /* Responsive */
        
        @media (max-width: 1024px) {
            .strategy-grid,
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-cat-grid {
                grid-template-columns: 1fr;
            }
            .hero-cat-image {
                max-height: 320px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links,
            .nav-auth-btns {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .strategy-grid,
            .articles-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .hero-cat-title {
                font-size: 2rem;
            }
            .hero-cat-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        
        @media (max-width: 520px) {
            .hero-category {
                padding: 40px 0 30px;
            }
            .hero-cat-title {
                font-size: 1.6rem;
            }
            .hero-cat-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 0;
            }
            .fab {
                left: 10px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.45);
            --shadow-glow-hover: 0 0 30px rgba(56, 189, 248, 0.65);
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --transition-base: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            margin: 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition-base);
        }
        .navbar.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 6px 0;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
        }
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-secondary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: none;
            color: #FFFFFF;
            padding: 9px 24px;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            position: relative;
            overflow: hidden;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(3, 7, 18, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 20px;
            transition: var(--transition-base);
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-secondary);
            background: rgba(37, 99, 235, 0.1);
            border-left: 3px solid var(--accent-secondary);
        }
        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            padding: 10px 20px;
            gap: 12px;
        }
        main {
            margin-top: 70px;
            min-height: 80vh;
        }
        .page-hero {
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 60%), var(--bg-secondary);
            padding: 3.5rem 0 3rem;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
        }
        .section-padding {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }
        .glass-card {
            background: rgba(8, 18, 41, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 2rem;
            transition: var(--transition-base);
        }
        .glass-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 2rem;
        }
        .tip-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 1.5rem;
        }
        .tip-icon {
            font-size: 2rem;
            color: var(--accent-secondary);
            flex-shrink: 0;
            background: rgba(37, 99, 235, 0.15);
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-color);
        }
        .news-card {
            background: rgba(8, 18, 41, 0.4);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .news-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }
        .news-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .news-card-body {
            padding: 1.5rem;
        }
        .news-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }
        .news-card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .btn-outline {
            display: inline-block;
            padding: 10px 28px;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition-base);
            background: transparent;
            font-size: 0.95rem;
        }
        .btn-outline:hover {
            background: rgba(37, 99, 235, 0.2);
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.3);
        }
        .btn-primary {
            display: inline-block;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 700;
            border-radius: var(--border-radius-sm);
            border: none;
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            font-size: 1rem;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
        }
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-col h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--accent-secondary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.75rem;
        }
        .footer-col ul li a, .footer-col ul li span {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-secondary);
        }
        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 1.5rem;
        }
        .footer-social a {
            color: var(--text-secondary);
            font-size: 1.3rem;
            transition: var(--transition-base);
        }
        .footer-social a:hover {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            margin-top: 2rem;
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 24px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(8, 18, 41, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            transition: var(--transition-base);
            cursor: pointer;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
            background: rgba(37, 99, 235, 0.25);
        }
        @media (max-width: 1024px) {
            .strategy-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-auth-btns {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 1.9rem;
            }
            .page-hero {
                padding: 2.5rem 0 2rem;
            }
        }