/* roulang page: index */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent-gold: #FFD700;
            --accent-amber: #FF9F00;
            --text-primary: #FFFDF9;
            --text-secondary: #FEF08A;
            --text-muted: #D1D5DB;
            --bg-dark: #1A0A0A;
            --bg-card: rgba(255, 255, 255, 0.05);
            --border-gold: #FFD700;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --radius: 12px;
            --radius-lg: 20px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-dark);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--accent-amber);
            text-decoration: underline;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* Navigation */
        .site-header {
            background: rgba(26, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0.75rem 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            text-decoration: none;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }

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

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
            text-decoration: none;
        }

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

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-dark);
            border: none;
            padding: 0.5rem 1.25rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            background: var(--accent-amber);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            margin-top: 0;
            padding-top: 80px;
        }

        .hero-video-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            opacity: 0.4;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(74, 0, 7, 0.85) 0%, rgba(26, 10, 10, 0.9) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: var(--spacing-lg) 0;
        }

        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            background: var(--accent-gold);
            border-radius: 50%;
            margin-bottom: var(--spacing-md);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-gold);
        }

        .hero-play-btn:hover {
            transform: scale(1.1);
            background: var(--accent-amber);
        }

        .hero-play-btn i {
            font-size: 2rem;
            color: var(--primary-dark);
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
            max-width: 800px;
        }

        .hero-title .highlight {
            color: var(--accent-gold);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 650px;
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .btn-primary {
            background: var(--accent-gold);
            color: var(--primary-dark);
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary:hover {
            background: var(--accent-amber);
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
            text-decoration: none;
            color: var(--primary-dark);
        }

        .btn-outline-gold {
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.8rem 2rem;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

        .btn-outline-gold:hover {
            background: rgba(255, 215, 0, 0.15);
            text-decoration: none;
            color: var(--accent-gold);
        }

        /* Section Spacing */
        .section-padding {
            padding: var(--spacing-xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-label {
            display: inline-block;
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            padding: 0.35rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.6;
        }

        /* Latest Updates Section */
        .updates-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-md);
            align-items: start;
        }

        .updates-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .update-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1rem 0;
            transition: var(--transition);
        }

        .update-item:hover {
            background: rgba(255, 215, 0, 0.03);
            padding-left: 0.5rem;
        }

        .update-item a {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            gap: 1rem;
        }

        .update-item a:hover {
            color: var(--accent-gold);
            text-decoration: none;
        }

        .update-date {
            color: var(--text-muted);
            font-size: 0.8rem;
            white-space: nowrap;
            font-weight: 400;
        }

        .updates-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid rgba(255, 215, 0, 0.15);
        }

        .updates-sidebar h4 {
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }

        .updates-sidebar p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Quick Answers Section */
        .quick-answers-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .answer-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid rgba(255, 215, 0, 0.1);
            transition: var(--transition);
        }

        .answer-card:hover {
            border-color: rgba(255, 215, 0, 0.4);
            transform: translateY(-4px);
        }

        .answer-icon {
            font-size: 2rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
        }

        .answer-card h4 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

        .answer-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Info Section */
        .info-two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .info-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-gold);
        }

        .info-text h3 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .info-text p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        /* Security Section */
        .security-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
            text-align: center;
        }

        .security-item {
            padding: var(--spacing-md);
        }

        .security-icon {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 0.75rem;
        }

        .security-item h5 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .security-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* App Section */
        .app-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #2D0A0F 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
            border: 1px solid rgba(255, 215, 0, 0.2);
        }

        .app-info h3 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .app-info p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .app-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        .app-badge {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.3);
            padding: 0.6rem 1.25rem;
            border-radius: 8px;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .app-badge:hover {
            background: rgba(255, 215, 0, 0.2);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(26, 10, 10, 0.95);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            opacity: 0.7;
            animation: floatSlow 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(255, 215, 0, 0.5);
        }

        .fab-left i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        @keyframes floatSlow {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* Footer */
        .site-footer {
            background: rgba(10, 5, 5, 0.95);
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--spacing-md);
        }

        .footer-col h5 {
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1.05rem;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

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

        .footer-col ul li a:hover {
            color: var(--accent-gold);
            text-decoration: none;
        }

        .footer-bottom {
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.25rem;
            }
            .updates-grid {
                grid-template-columns: 1fr;
            }
            .info-two-col {
                grid-template-columns: 1fr;
            }
            .app-section {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(26, 10, 10, 0.98);
                flex-direction: column;
                padding: 1rem;
                border-top: 1px solid rgba(255, 215, 0, 0.2);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-buttons {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-play-btn {
                width: 50px;
                height: 50px;
            }
            .hero-play-btn i {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary,
            .btn-outline-gold {
                width: 100%;
                text-align: center;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .security-strip {
                grid-template-columns: 1fr 1fr;
            }
            .quick-answers-grid {
                grid-template-columns: 1fr;
            }
            .fab-left {
                left: 0.5rem;
                bottom: 5rem;
                width: 44px;
                height: 44px;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #121212;
            --card-bg: #1C1C1E;
            --accent-gold: #C5A059;
            --amber: #FFBF00;
            --text-white: #F5F5F7;
            --text-muted: #A6A6A6;
            --text-gold: #D4AC0D;
            --border-color: #2C2C2E;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.6);
            --border-radius: 8px;
            --transition: all 0.25s ease;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        /* Header & Navigation */
        .site-header {
            background-color: rgba(18, 18, 18, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 0 20px;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            height: 70px;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--amber);
            text-decoration: none;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            margin: 0;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-links a.active,
        .nav-links a:hover {
            color: var(--amber);
            background-color: rgba(197, 160, 89, 0.08);
        }

        .nav-buttons {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--text-muted);
            color: var(--text-white);
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .btn-login:hover {
            border-color: var(--amber);
            color: var(--amber);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), var(--amber));
            border: none;
            color: #000;
            padding: 8px 20px;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            box-shadow: 0 0 15px rgba(197, 160, 89, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(180deg, #1C1C1E 0%, #121212 100%);
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--border-color);
            text-align: left;
        }

        .hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }

        .hero-text {
            flex: 1 1 500px;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--amber);
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero-text p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 25px;
            max-width: 600px;
        }

        .search-box {
            display: flex;
            max-width: 450px;
            margin-bottom: 30px;
        }

        .search-box input {
            flex: 1;
            padding: 14px 18px;
            border: 1px solid var(--border-color);
            background: #0A0A0A;
            color: var(--text-white);
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            border-color: var(--accent-gold);
            box-shadow: 0 0 0 2px rgba(197, 160, 89, 0.2);
        }

        .search-box button {
            background: var(--amber);
            border: none;
            color: #000;
            padding: 0 24px;
            font-weight: 700;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-box button:hover {
            background: #e6a800;
        }

        .quick-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .quick-link {
            background: var(--card-bg);
            color: var(--text-white);
            padding: 8px 18px;
            border-radius: 20px;
            text-decoration: none;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .quick-link:hover {
            border-color: var(--accent-gold);
            color: var(--amber);
        }

        .hero-image {
            flex: 1 1 380px;
            text-align: center;
        }

        .hero-image img {
            max-width: 100%;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        /* Section Titles */
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--amber);
            margin-bottom: 15px;
            position: relative;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 40px;
        }

        /* Steps / Features */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 25px;
            transition: var(--transition);
            text-align: left;
        }

        .step-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-sm);
            transform: translateY(-4px);
        }

        .step-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--amber);
            opacity: 0.3;
            margin-bottom: 10px;
        }

        .step-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--text-white);
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Info Block */
        .info-block {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 35px;
            margin: 35px 0;
            border-left: 4px solid var(--accent-gold);
            display: flex;
            flex-wrap: wrap;
            gap: 25px;
            align-items: flex-start;
        }

        .info-icon {
            font-size: 2.5rem;
            color: var(--amber);
        }

        .info-text h4 {
            font-size: 1.4rem;
            color: var(--amber);
            margin-bottom: 10px;
        }

        .info-text ul {
            list-style: none;
            padding: 0;
            color: var(--text-muted);
        }

        .info-text ul li {
            margin-bottom: 8px;
            display: flex;
            align-items: baseline;
            gap: 10px;
        }

        .info-text ul li i {
            color: var(--amber);
            font-size: 0.8rem;
        }

        /* Tips Grid */
        .tips-wrapper {
            margin: 35px 0;
        }

        .tip-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            margin-bottom: 30px;
        }

        .tip-image {
            flex: 1 1 250px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .tip-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .tip-content {
            flex: 1 1 350px;
        }

        .tip-content h3 {
            font-size: 1.5rem;
            color: var(--amber);
            margin-bottom: 12px;
        }

        .tip-content p {
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .badge-gold {
            background: rgba(197, 160, 89, 0.15);
            color: var(--amber);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* FAQ */
        .faq-section {
            margin: 50px 0;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-white);
        }

        .faq-answer {
            padding: 0 25px 20px;
            color: var(--text-muted);
            display: none;
            line-height: 1.6;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        .faq-item.active .faq-question {
            color: var(--amber);
        }

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, #1C1C1E, #2A2418);
            border-radius: 16px;
            padding: 45px;
            text-align: left;
            margin: 50px 0;
            border: 1px solid var(--accent-gold);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 25px;
        }

        .cta-text h3 {
            font-size: 1.8rem;
            color: var(--amber);
        }

        .btn-cta-large {
            background: var(--amber);
            color: #000;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
        }

        .btn-cta-large:hover {
            background: #e6a800;
            box-shadow: 0 0 20px rgba(255, 191, 0, 0.4);
        }

        /* Footer */
        .site-footer {
            background: #0A0A0A;
            border-top: 1px solid var(--border-color);
            padding: 50px 0 25px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 30px;
            margin-bottom: 35px;
        }

        .footer-col h5 {
            color: var(--amber);
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--amber);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                flex-direction: column;
            }

            .hero-text h1 {
                font-size: 2.2rem;
            }

            .nav-links {
                gap: 1rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #121212;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }

            .nav-links.active-mobile {
                display: flex;
            }

            .nav-buttons {
                display: none;
            }

            .hero-text h1 {
                font-size: 1.9rem;
            }

            .cta-block {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.6rem;
            }

            .search-box {
                flex-direction: column;
            }

            .search-box input,
            .search-box button {
                border-radius: 8px;
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #0B1A30;
            --primary-deep: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text: #FFFFFF;
            --text-muted: #A6ACAF;
            --border-glow: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.85);
            --card-border: rgba(0, 240, 255, 0.25);
            --btn-signup-bg: #CCFF00;
            --btn-signup-text: #0F0C20;
            --btn-login-border: #00F0FF;
            --btn-login-text: #00F0FF;
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.45);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            background: var(--primary-deep);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: radial-gradient(ellipse at 30% 15%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 80%, rgba(204, 255, 0, 0.04) 0%, transparent 55%);
            background-attachment: fixed;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }

        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(204, 255, 0, 0.35);
        }

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

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

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 68px;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-decoration: none;
            letter-spacing: -0.3px;
            white-space: nowrap;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
            transition: text-shadow 0.3s ease;
        }

        .nav-logo:hover {
            text-shadow: 0 0 20px rgba(204, 255, 0, 0.7);
            color: var(--accent-lime);
        }

        .nav-links {
            list-style: none;
            display: flex;
            gap: 2rem;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            text-decoration: none;
            position: relative;
            padding-bottom: 4px;
            transition: color 0.25s ease;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent-lime);
            box-shadow: 0 0 8px var(--accent-lime);
            transition: width 0.3s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1.5px solid var(--btn-login-border);
            color: var(--btn-login-text);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-signup {
            background: var(--btn-signup-bg);
            color: var(--btn-signup-text);
            border: none;
            padding: 8px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s ease;
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.45);
        }

        .btn-signup:hover {
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.7);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            font-size: 1.4rem;
            padding: 6px 12px;
            border-radius: 6px;
        }

        .page-header-offset {
            padding-top: 100px;
        }

        .article-hero {
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.7) 0%, rgba(15, 12, 32, 0.9) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 70px 0 50px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.09) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            margin-bottom: 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-category-badge {
            background: rgba(204, 255, 0, 0.15);
            border: 1px solid var(--accent-lime);
            color: var(--accent-lime);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.82rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .article-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-date i {
            color: var(--accent-cyan);
        }

        .article-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #fff;
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            max-width: 800px;
        }

        .article-hero .article-excerpt {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.6;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            padding: 50px 0 60px;
            align-items: start;
        }

        .article-body {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--accent-cyan);
            border-left: 4px solid var(--accent-lime);
            padding-left: 16px;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 12px;
            color: #fff;
        }

        .article-body p {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

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

        .article-body li {
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .article-body strong {
            color: var(--accent-lime);
            font-weight: 600;
        }

        .article-body blockquote {
            background: rgba(0, 240, 255, 0.05);
            border-left: 4px solid var(--accent-cyan);
            margin: 28px 0;
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text);
            font-style: italic;
            box-shadow: inset 0 0 20px rgba(0, 240, 255, 0.04);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .sidebar-card h5 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 12px;
        }

        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-card ul li {
            margin-bottom: 10px;
        }

        .sidebar-card ul li a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: color 0.25s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card ul li a i {
            color: var(--accent-lime);
            font-size: 0.7rem;
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-lime);
        }

        .cta-download-box {
            background: rgba(204, 255, 0, 0.08);
            border: 1px solid var(--accent-lime);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.15);
        }

        .cta-download-box h5 {
            color: var(--accent-lime);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .cta-download-box p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 16px;
        }

        .btn-download {
            display: inline-block;
            background: var(--btn-signup-bg);
            color: var(--btn-signup-text);
            padding: 10px 28px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.5);
            transition: all 0.3s ease;
        }

        .btn-download:hover {
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.8);
            transform: translateY(-2px);
            color: var(--btn-signup-text);
        }

        .not-found-block {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .not-found-block i {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .not-found-block h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: #fff;
        }

        .not-found-block p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .not-found-block .btn-back {
            display: inline-block;
            background: var(--accent-lime);
            color: var(--btn-signup-text);
            padding: 10px 28px;
            border-radius: 24px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.5);
            transition: all 0.3s ease;
        }

        .not-found-block .btn-back:hover {
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.8);
            transform: translateY(-2px);
            color: var(--btn-signup-text);
        }

        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 28px;
            background: rgba(11, 26, 48, 0.75);
            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;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.5);
            transition: all 0.3s ease;
            opacity: 0.65;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 30px;
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            z-index: -1;
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: xor;
            padding: 2px;
        }

        .fab-left i {
            color: var(--accent-cyan);
            font-size: 1.4rem;
            transition: all 0.3s ease;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
        }

        .fab-left:hover i {
            color: var(--accent-lime);
            animation: neonFlicker 0.3s ease;
        }

        .fab-left:active {
            transform: scale(0.92);
        }

        .fab-notification {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            box-shadow: 0 0 10px #FF007F;
            animation: blinkDot 1.2s infinite;
        }

        @keyframes fabFloat {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        @keyframes blinkDot {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.2;
            }
        }

        @keyframes neonFlicker {
            0% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
            100% {
                opacity: 0.8;
            }
        }

        .site-footer {
            background: rgba(11, 26, 48, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.18);
            padding: 50px 0 30px;
            margin-top: 20px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-col h5 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.6px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 22px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .article-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.97);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-buttons {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.82rem;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-body {
                padding: 28px 22px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.2rem;
            }
            .btn-login,
            .btn-signup {
                padding: 5px 12px;
                font-size: 0.78rem;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .fab-left {
                width: 46px;
                height: 46px;
                left: 12px;
                bottom: 80px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #08090F;
            --bg-card: rgba(11, 16, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #64748B;
            --border-dim: rgba(0, 82, 255, 0.15);
            --border-glow: rgba(0, 82, 255, 0.4);
            --shadow-glow: 0 0 25px rgba(0, 82, 255, 0.35);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-deep);
            color: var(--text-silver);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 20% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                              radial-gradient(circle at 80% 60%, rgba(0, 240, 255, 0.04) 0%, transparent 50%);
            background-attachment: fixed;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text-white);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent-blue);
            text-decoration: underline;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* --- Navigation --- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-dim);
            padding: 0.75rem 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            gap: 1.5rem;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            white-space: nowrap;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }
        .nav-logo:hover {
            color: var(--accent-blue);
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 0.5rem;
            margin: 0;
        }
        .nav-links a {
            color: var(--text-silver);
            padding: 0.5rem 1rem;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            border: 1px solid transparent;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 82, 255, 0.1);
            border-color: var(--border-glow);
            text-decoration: none;
        }
        .nav-buttons {
            display: flex;
            gap: 0.6rem;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--text-muted);
            color: var(--text-silver);
            padding: 0.45rem 1.2rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s ease;
            background: rgba(255,255,255,0.03);
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .btn-signup {
            background: var(--accent-blue);
            color: #fff;
            border: none;
            padding: 0.5rem 1.3rem;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s ease;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.3);
        }
        .btn-signup:hover {
            background: #0066ff;
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.55);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--text-muted);
            color: var(--accent-cyan);
            font-size: 1.5rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            cursor: pointer;
        }

        /* --- Hero Section --- */
        .hero-static {
            padding: 4rem 0 3rem;
            background: linear-gradient(180deg, rgba(0,240,255,0.03) 0%, transparent 50%);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-left h1 {
            font-size: 2.6rem;
            margin-bottom: 1.2rem;
            color: #fff;
            line-height: 1.2;
        }
        .hero-left .lead {
            font-size: 1.15rem;
            color: var(--text-silver);
            margin-bottom: 1.8rem;
            max-width: 90%;
        }
        .hero-right {
            background: rgba(11, 16, 30, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            box-shadow: var(--shadow-glow);
        }
        .term-quick-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }
        .term-quick-list li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1rem;
            color: var(--text-silver);
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .term-quick-list i {
            color: var(--accent-cyan);
            font-size: 1rem;
            width: 20px;
        }
        .btn-cta {
            background: var(--accent-blue);
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 8px 25px rgba(0, 82, 255, 0.35);
            margin-top: 0.5rem;
        }
        .btn-cta:hover {
            background: #0066ff;
            box-shadow: 0 10px 30px rgba(0, 82, 255, 0.55);
            transform: translateY(-1px);
        }

        /* Glossary Grid */
        .section-glossary {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            color: #fff;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 60%;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 3px;
        }
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.8rem;
            margin-top: 2.5rem;
        }
        .glossary-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .glossary-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 28px rgba(0, 82, 255, 0.2);
            transform: translateY(-2px);
        }
        .glossary-card .term-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 0.2rem;
        }
        .glossary-card h3 {
            font-size: 1.4rem;
            margin-bottom: 0.2rem;
        }
        .glossary-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.55;
            margin: 0;
        }
        .badge {
            background: rgba(0, 82, 255, 0.15);
            color: var(--accent-cyan);
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            display: inline-block;
            align-self: flex-start;
        }

        /* Advanced Section */
        .section-advanced {
            padding: 3rem 0 4rem;
        }
        .advanced-row {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
            align-items: start;
            margin-top: 2rem;
        }
        .info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .info-list li {
            display: flex;
            gap: 0.8rem;
            align-items: flex-start;
        }
        .info-list .icon-circle {
            width: 28px;
            height: 28px;
            background: var(--accent-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
            font-size: 0.9rem;
            margin-top: 3px;
        }
        .image-block img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-dim);
            box-shadow: 0 8px 25px rgba(0,0,0,0.5);
        }

        /* FAQ */
        .section-faq {
            padding: 3rem 0 4rem;
            background: rgba(0, 240, 255, 0.015);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-dim);
            padding: 1.3rem 0;
        }
        .faq-question {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.4rem;
            cursor: pointer;
        }
        .faq-answer {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* Footer */
        .site-footer {
            background: rgba(5, 6, 12, 0.9);
            border-top: 1px solid var(--border-dim);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-col h5 {
            color: var(--accent-cyan);
            font-size: 1rem;
            margin-bottom: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 0.4rem;
        }
        .footer-col a {
            color: var(--text-silver);
            font-size: 0.9rem;
        }
        .footer-bottom {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 1.5rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 5rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8,9,15,0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0,240,255,0.35);
            transition: all 0.3s ease;
            border-image: linear-gradient(135deg, #0052FF, #00F0FF) 1;
        }
        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 0 30px rgba(0,240,255,0.6);
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .advanced-row {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                background: rgba(8,9,15,0.95);
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                padding: 1rem;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-buttons {
                display: flex;
            }
            .hero-left h1 {
                font-size: 2rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: #111627;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 82, 255, 0.25);
            --border-glow: rgba(0, 240, 255, 0.5);
            --shadow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-blue: 0 4px 20px rgba(0, 82, 255, 0.3);
            --gradient-cyber: linear-gradient(135deg, #0052FF, #00F0FF);
            --font-heading: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            --font-body: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--primary-bg);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }

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

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
        }

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

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            list-style: none;
            display: flex;
            gap: 32px;
            margin: 0;
        }

        .nav-links li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition-fast);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--text-primary);
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-cyber);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }

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

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

        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 600;
            padding: 10px 20px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 24px;
            transition: all var(--transition-fast);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

        .btn-signup {
            background: var(--gradient-cyber);
            color: #000;
            font-size: 0.9rem;
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 24px;
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-signup:active {
            transform: scale(0.97);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.5rem;
            border: none;
            padding: 8px;
        }

        /* Page Banner */
        .page-banner {
            margin-top: 72px;
            padding: 80px 0 60px;
            background: var(--secondary-bg);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .banner-text {
            flex: 1;
            min-width: 280px;
        }

        .banner-label {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: clamp(2.2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .page-banner h1 span {
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .banner-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .banner-visual {
            flex: 1;
            min-width: 300px;
            display: flex;
            justify-content: center;
        }

        .banner-visual img {
            max-width: 420px;
            border-radius: var(--radius-lg);
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.35);
            border: 2px solid rgba(0, 240, 255, 0.2);
        }

        /* Main Content Area */
        .main-content {
            padding: 60px 0;
            background: var(--primary-bg);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-title span {
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 640px;
        }

        /* Strategy Cards Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
            gap: 28px;
            margin-bottom: 60px;
        }

        .strategy-card {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-cyber);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-blue);
            transform: translateY(-4px);
        }

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

        .card-icon {
            width: 56px;
            height: 56px;
            background: rgba(0, 240, 255, 0.08);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .strategy-card h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .strategy-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .card-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(0, 82, 255, 0.12);
            color: var(--accent-blue);
            border: 1px solid rgba(0, 82, 255, 0.3);
        }

        .card-tag.hot {
            background: rgba(255, 69, 0, 0.15);
            color: #FF4500;
            border-color: rgba(255, 69, 0, 0.4);
        }

        /* Advanced Tactics Section */
        .tactics-section {
            margin-bottom: 60px;
        }

        .tactic-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .tactic-block.reverse {
            flex-direction: row-reverse;
        }

        .tactic-text {
            flex: 1;
            min-width: 280px;
        }

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

        .tactic-text p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .tactic-list {
            list-style: none;
            padding: 0;
        }

        .tactic-list li {
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tactic-list li i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        .tactic-visual {
            flex: 1;
            min-width: 280px;
        }

        .tactic-visual img {
            border-radius: var(--radius-md);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.25);
            border: 1px solid var(--border-subtle);
        }

        /* Scenario Section */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin-bottom: 60px;
        }

        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all var(--transition-smooth);
        }

        .scenario-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
        }

        .scenario-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .scenario-number {
            width: 40px;
            height: 40px;
            background: var(--gradient-cyber);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #000;
            font-size: 1.1rem;
        }

        .scenario-card h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }

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

        /* Pro Tips Marquee */
        .tips-marquee {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 24px 0;
            margin-bottom: 60px;
            overflow: hidden;
            position: relative;
        }

        .tips-track {
            display: flex;
            gap: 48px;
            animation: scrollTips 30s linear infinite;
            white-space: nowrap;
        }

        @keyframes scrollTips {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .tip-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .tip-item i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        /* FAQ */
        .faq-section {
            margin-bottom: 60px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            cursor: pointer;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-cyan);
        }

        .faq-question {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-top: 12px;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-toggle {
            font-size: 1.2rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
        }

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

        /* CTA Bottom */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary-bg), var(--primary-bg));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            margin-bottom: 60px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            background: var(--gradient-cyber);
            color: #000;
            font-size: 1.1rem;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 30px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            display: inline-block;
        }

        .btn-cta-primary:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.8);
            transform: translateY(-3px);
        }

        .btn-cta-primary:active {
            transform: scale(0.96);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h5 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 20px;
            bottom: 80px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #0052FF, #00F0FF) 1;
            border-radius: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
            cursor: pointer;
            opacity: 0.65;
        }

        .fab-floating:hover {
            opacity: 1;
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.8);
            transform: scale(1.08);
        }

        .fab-floating:active {
            transform: scale(0.94);
        }

        .fab-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF4500;
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(255, 69, 0, 0.7);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }
            .strategy-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-subtle);
            }

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

            .nav-buttons {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                font-size: 0.8rem;
                padding: 8px 16px;
            }

            .page-banner {
                padding: 60px 0 40px;
            }

            .banner-content {
                flex-direction: column;
                gap: 32px;
            }

            .strategy-grid {
                grid-template-columns: 1fr;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .tactic-block,
            .tactic-block.reverse {
                flex-direction: column;
                gap: 24px;
            }

            .cta-section {
                padding: 40px 24px;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-logo {
                font-size: 1.2rem;
            }

            .banner-stats {
                gap: 16px;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .fab-floating {
                left: 12px;
                bottom: 60px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }