/* roulang page: index */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: #111624;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B95A9;
            --border-color: rgba(0, 240, 255, 0.15);
            --border-hover: rgba(0, 240, 255, 0.5);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-glow-strong: 0 0 35px rgba(0, 240, 255, 0.55);
            --font-primary: 'Be Vietnam Pro', sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1280px;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

        .container {
            max-width: var(--max-width);
            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, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 20px;
            color: #08090F;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
        }

        .logo-text {
            font-weight: 800;
            font-size: 20px;
            letter-spacing: -0.5px;
            background: linear-gradient(90deg, #FFFFFF, #00F0FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            position: relative;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-silver);
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 240, 255, 0.3);
            transition: var(--transition);
        }

        .btn-login:hover {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: var(--transition);
        }

        .btn-signup:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 24px;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 8px;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 999;
        }

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

        .mobile-menu a {
            padding: 14px 18px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            position: relative;
            background: linear-gradient(180deg, #0D111E 0%, #08090F 100%);
            overflow: hidden;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -150px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content {
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            font-size: 14px;
        }

        .hero-content h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1.5px;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF 30%, #00F0FF 70%, #0052FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 700;
            border-radius: var(--radius-md);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.65);
            transform: translateY(-3px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            border: 1.5px solid rgba(0, 240, 255, 0.4);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

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

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

        .hero-stat .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 400;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.25);
            box-shadow: var(--shadow-glow-strong);
            background: var(--card-bg);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(0deg, rgba(8, 9, 15, 0.95) 0%, transparent 100%);
            padding: 60px 24px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .hero-overlay-text {
            font-size: 14px;
            color: var(--text-silver);
            font-weight: 500;
        }

        .hero-overlay-badge {
            background: rgba(0, 240, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 700;
            white-space: nowrap;
        }

        /* Sections Common */
        .section {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 48px;
            text-align: left;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 14px;
            line-height: 1.2;
            color: var(--text-white);
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 640px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        /* Voucher Grid Section */
        .voucher-section {
            background: var(--secondary-bg);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

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

        .voucher-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

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

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

        .voucher-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-cyan);
            margin-bottom: 18px;
        }

        .voucher-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-white);
        }

        .voucher-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .voucher-value {
            font-size: 28px;
            font-weight: 900;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        /* Rules Section */
        .rules-section {
            background: var(--primary-bg);
        }

        .rules-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            align-items: start;
        }

        .rules-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .rule-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

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

        .rule-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--accent-cyan);
            flex-shrink: 0;
            font-size: 14px;
        }

        .rule-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .rule-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .rules-highlight {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
        }

        .rules-highlight h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .rules-highlight p {
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .rules-highlight ul {
            list-style: none;
            padding: 0;
        }

        .rules-highlight ul li {
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }

        .rules-highlight ul li:last-child {
            border-bottom: none;
        }

        .rules-highlight ul li i {
            color: var(--accent-cyan);
            font-size: 14px;
        }

        /* Screenshot Stage Section */
        .screenshot-section {
            background: var(--secondary-bg);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .screenshot-stage {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .screenshot-info h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .screenshot-info p {
            font-size: 16px;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .screenshot-info .btn-primary {
            font-size: 15px;
            padding: 12px 26px;
        }

        .screenshot-display {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
        }

        .screenshot-item {
            min-width: 280px;
            scroll-snap-align: start;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
            background: var(--card-bg);
            transition: var(--transition);
        }

        .screenshot-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .screenshot-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .screenshot-caption {
            padding: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-silver);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--primary-bg);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
        }

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

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            background: transparent;
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-question i {
            font-size: 18px;
            color: var(--accent-cyan);
            transition: var(--transition);
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.7;
        }

        /* Reviews Section */
        .reviews-section {
            background: var(--secondary-bg);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .reviews-summary {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .reviews-score {
            text-align: left;
        }

        .reviews-score .score-number {
            font-size: 48px;
            font-weight: 900;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .reviews-score .score-stars {
            color: var(--accent-cyan);
            font-size: 20px;
            margin: 8px 0;
        }

        .reviews-score .score-count {
            font-size: 14px;
            color: var(--text-muted);
        }

        .reviews-breakdown {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .review-bar-row {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .review-bar-row .bar-label {
            width: 50px;
            flex-shrink: 0;
        }

        .review-bar-row .bar-track {
            flex: 1;
            height: 8px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 4px;
            overflow: hidden;
        }

        .review-bar-row .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 4px;
            transition: var(--transition);
        }

        .reviews-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .review-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .review-stars {
            color: var(--accent-cyan);
            font-size: 14px;
            margin-bottom: 12px;
        }

        .review-text {
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .review-author-info .author-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-white);
        }

        .review-author-info .author-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0D111E 0%, #08090F 100%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            padding: 80px 0;
        }

        .cta-inner {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(0, 82, 255, 0.12) 100%);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-inner::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .cta-inner p {
            font-size: 17px;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 28px;
        }

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

        /* Topic Cards Section */
        .topic-section {
            background: var(--primary-bg);
        }

        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .topic-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            transform: scaleX(0);
            transition: var(--transition);
            transform-origin: left;
        }

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

        .topic-card:hover::after {
            transform: scaleX(1);
        }

        .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-cyan);
            margin-bottom: 14px;
        }

        .topic-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* News Section */
        .news-section {
            background: var(--secondary-bg);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            transition: var(--transition);
        }

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

        .news-item:hover {
            padding-left: 8px;
        }

        .news-item .news-index {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .news-item .news-content {
            flex: 1;
        }

        .news-item .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
            transition: var(--transition);
        }

        .news-item:hover .news-title {
            color: var(--accent-cyan);
        }

        .news-item .news-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .news-item .news-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
        }

        .news-sidebar h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .news-sidebar ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-sidebar ul li a {
            display: block;
            padding: 12px 16px;
            background: rgba(0, 240, 255, 0.04);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-silver);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .news-sidebar ul li a:hover {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            border-color: rgba(0, 240, 255, 0.2);
        }

        /* Footer */
        .site-footer {
            background: #05060A;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 50px;
            font-size: 12px;
            color: var(--text-silver);
            font-weight: 500;
        }

        .footer-badge i {
            color: var(--accent-cyan);
            font-size: 13px;
        }

        /* Floating Action Button */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: var(--transition);
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-pink));
            z-index: -1;
            animation: fab-glow 3s ease-in-out infinite;
        }

        .fab-support:hover {
            transform: scale(1.12);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            animation-play-state: paused;
        }

        .fab-support:active {
            transform: scale(0.95);
        }

        .fab-support .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-pink);
            border: 2px solid #08090F;
            animation: blink-notification 1.5s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 1; }
        }

        @keyframes fab-glow {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }

        @keyframes blink-notification {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content h1 {
                font-size: 40px;
            }
            .hero-visual {
                order: -1;
            }
            .voucher-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .screenshot-stage {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: inline-flex;
            }
            .header-inner {
                height: 64px;
            }
            .hero-section {
                padding: 110px 0 50px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content p {
                font-size: 16px;
            }
            .voucher-grid {
                grid-template-columns: 1fr;
            }
            .rules-grid {
                grid-template-columns: 1fr;
            }
            .reviews-list {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-inner {
                padding: 32px 20px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 26px;
                letter-spacing: -0.5px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat .stat-number {
                font-size: 22px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .header-actions {
                gap: 6px;
            }
            .btn-login {
                padding: 8px 12px;
                font-size: 13px;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 20px;
                left: 12px;
                bottom: 80px;
            }
            .voucher-card {
                padding: 20px;
            }
            .screenshot-item {
                min-width: 240px;
            }
            .screenshot-item img {
                height: 160px;
            }
            .reviews-summary {
                gap: 16px;
            }
            .reviews-score .score-number {
                font-size: 36px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --bg-card: #0D442B;
            --bg-elevated: #125033;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-white: #FFFDF0;
            --text-light: #C5E2D2;
            --text-muted: #8FB8A2;
            --border-soft: rgba(255, 204, 0, 0.25);
            --border-strong: rgba(255, 204, 0, 0.55);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 25px rgba(255, 204, 0, 0.18);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 40px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: radial-gradient(circle at 15% 20%, rgba(50, 205, 50, 0.06) 0%, transparent 40%),
                radial-gradient(circle at 85% 75%, rgba(255, 204, 0, 0.05) 0%, transparent 35%),
                linear-gradient(180deg, #0B3C25 0%, #062315 100%);
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: min(1200px, 100% - 2.5rem);
            margin-inline: auto;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            padding: 0.9rem 0;
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            background: rgba(6, 35, 21, 0.98);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.01em;
            line-height: 1.3;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-text .fa-solid {
            color: var(--accent-gold);
            font-size: 1.4rem;
            filter: drop-shadow(0 0 6px rgba(255, 204, 0, 0.5));
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 0.55rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 204, 0, 0.1);
        }

        .main-nav a.active {
            color: #062315;
            background: var(--accent-gold);
            box-shadow: 0 4px 18px rgba(255, 204, 0, 0.3);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-nav-login {
            padding: 0.55rem 1.1rem;
            font-weight: 600;
            color: var(--text-light);
            font-size: 0.9rem;
            border-radius: 50px;
            transition: all var(--transition);
        }

        .btn-nav-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-nav-signup {
            padding: 0.55rem 1.25rem;
            font-weight: 700;
            color: #062315;
            background: var(--accent-gold);
            border-radius: 50px;
            font-size: 0.9rem;
            box-shadow: 0 4px 18px rgba(255, 204, 0, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-signup:hover {
            background: #ffe066;
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(255, 204, 0, 0.45);
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 204, 0, 0.12);
            color: var(--accent-gold);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255, 204, 0, 0.22);
        }

        /* Article Hero Banner */
        .article-hero {
            position: relative;
            padding: 3.5rem 0 2.8rem;
            background: linear-gradient(135deg, rgba(11, 60, 37, 0.95) 0%, rgba(6, 35, 21, 0.9) 55%, rgba(11, 60, 37, 0.85) 100%);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.14;
            z-index: 0;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 30%, rgba(50, 205, 50, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(255, 204, 0, 0.1) 0%, transparent 45%);
            z-index: 0;
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .article-breadcrumb a {
            color: var(--text-light);
            font-weight: 500;
            transition: color var(--transition);
        }

        .article-breadcrumb a:hover {
            color: var(--accent-gold);
        }

        .article-breadcrumb .separator {
            color: rgba(255, 204, 0, 0.5);
        }

        .article-breadcrumb .current {
            color: var(--accent-gold);
            font-weight: 600;
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 1.2rem;
            max-width: 900px;
        }

        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        .article-hero .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .article-hero .article-meta .fa-solid {
            color: var(--accent-gold);
        }

        .article-hero .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 1rem;
            background: rgba(255, 204, 0, 0.15);
            border: 1px solid rgba(255, 204, 0, 0.4);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-gold);
            white-space: nowrap;
        }

        /* Article Body */
        .article-main {
            padding: 3.5rem 0 4.5rem;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 2.5rem;
            align-items: start;
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: clamp(1.5rem, 4vw, 3rem);
            border: 1px solid rgba(255, 204, 0, 0.15);
            box-shadow: var(--shadow-card);
        }

        .article-content h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 800;
            color: var(--accent-gold);
            margin: 2rem 0 1rem;
            line-height: 1.3;
        }

        .article-content h2:first-child {
            margin-top: 0;
        }

        .article-content h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.5rem);
            font-weight: 700;
            color: var(--text-white);
            margin: 1.8rem 0 0.9rem;
            line-height: 1.35;
        }

        .article-content p {
            color: var(--text-light);
            margin-bottom: 1.2rem;
            line-height: 1.7;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.4rem 1.4rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 0.6rem;
        }

        .article-content strong {
            color: var(--text-white);
            font-weight: 700;
        }

        .article-content em {
            color: var(--accent-gold);
            font-style: italic;
        }

        .article-content blockquote {
            margin: 1.8rem 0;
            padding: 1.5rem 1.8rem;
            background: rgba(255, 204, 0, 0.06);
            border-left: 5px solid var(--accent-gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--text-white);
            line-height: 1.7;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.8rem 0;
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }

        .article-content a {
            color: var(--accent-gold);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-content a:hover {
            color: #ffe066;
        }

        .article-content .article-not-found {
            text-align: center;
            padding: 3rem 1.5rem;
            color: var(--text-light);
        }

        .article-content .article-not-found .fa-solid {
            font-size: 3rem;
            color: var(--accent-gold);
            margin-bottom: 1.2rem;
            display: block;
        }

        .article-content .article-not-found h2 {
            color: var(--text-white);
            margin: 0 0 0.8rem;
        }

        .article-content .article-not-found .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            margin-top: 1.5rem;
            padding: 0.8rem 1.8rem;
            background: var(--accent-gold);
            color: #062315;
            font-weight: 700;
            border-radius: 50px;
            transition: all var(--transition);
        }

        .article-content .article-not-found .btn-back-home:hover {
            background: #ffe066;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }

        /* Article Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            border: 1px solid rgba(255, 204, 0, 0.15);
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .sidebar-card h3 .fa-solid {
            color: var(--accent-gold);
        }

        .sidebar-nav-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .sidebar-nav-links a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1rem;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .sidebar-nav-links a:hover {
            background: rgba(255, 204, 0, 0.1);
            color: var(--accent-gold);
            transform: translateX(4px);
        }

        .sidebar-nav-links a .fa-solid {
            font-size: 0.85rem;
            color: var(--accent-gold);
        }

        .sidebar-promo {
            background: linear-gradient(135deg, rgba(255, 204, 0, 0.12) 0%, rgba(50, 205, 50, 0.1) 100%);
            border: 1px solid rgba(255, 204, 0, 0.3);
        }

        .sidebar-promo .promo-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .sidebar-promo p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
            line-height: 1.6;
        }

        .sidebar-promo .btn-sidebar-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.5rem;
            background: var(--accent-gold);
            color: #062315;
            font-weight: 700;
            font-size: 0.88rem;
            border-radius: 50px;
            transition: all var(--transition);
        }

        .sidebar-promo .btn-sidebar-cta:hover {
            background: #ffe066;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 204, 0, 0.35);
        }

        /* Trust badges */
        .trust-strip {
            margin-top: 2.5rem;
            padding: 1.5rem;
            background: rgba(6, 35, 21, 0.5);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 204, 0, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .trust-strip .trust-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-light);
            font-weight: 600;
            font-size: 0.88rem;
        }

        .trust-strip .trust-item .fa-solid {
            color: var(--accent-lime);
            font-size: 1.1rem;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 204, 0, 0.15);
            padding: 3.5rem 0 2rem;
            margin-top: 1rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .logo-text {
            font-size: 1.05rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            line-height: 1.4;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1.1rem;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 3px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-col ul a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: all var(--transition);
        }

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

        .footer-bottom {
            padding-top: 1.8rem;
            border-top: 1px solid rgba(255, 204, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.9rem;
            background: rgba(255, 204, 0, 0.1);
            border: 1px solid rgba(255, 204, 0, 0.25);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-light);
            white-space: nowrap;
        }

        .footer-badge .fa-solid {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #3d6b4f, #1a4a2e);
            border: 3px solid var(--accent-gold);
            color: var(--accent-gold);
            font-size: 1.5rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all var(--transition);
            opacity: 0.7;
            animation: floatBreathing 3.5s ease-in-out infinite;
            text-decoration: none;
        }

        .fab-floating::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 16px;
            height: 16px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blinkDot 2s ease-in-out infinite;
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
            animation-play-state: paused;
        }

        .fab-floating:active {
            transform: scale(0.95);
        }

        @keyframes floatBreathing {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        @keyframes blinkDot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
            }

            .mobile-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(6, 35, 21, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                padding: 1rem 1.25rem 1.5rem;
                gap: 0.3rem;
                border-bottom: 1px solid rgba(255, 204, 0, 0.2);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

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

            .main-nav a {
                padding: 0.9rem 1.2rem;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .nav-cta-group {
                margin-left: auto;
            }

            .btn-nav-login,
            .btn-nav-signup {
                padding: 0.5rem 0.9rem;
                font-size: 0.85rem;
            }

            .article-hero {
                padding: 2.5rem 0 2rem;
            }

            .article-main {
                padding: 2.5rem 0 3rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .trust-strip {
                gap: 1rem;
                padding: 1.2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: calc(100% - 1.5rem);
            }

            .logo-text {
                font-size: 0.95rem;
            }

            .btn-nav-login {
                padding: 0.45rem 0.7rem;
                font-size: 0.8rem;
            }

            .btn-nav-signup {
                padding: 0.45rem 0.85rem;
                font-size: 0.8rem;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-content {
                padding: 1.3rem;
            }

            .article-hero .article-meta {
                gap: 0.8rem;
                font-size: 0.82rem;
            }

            .fab-floating {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 0.8rem;
                bottom: 5rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111624;
            --bg-elevated: #161C2E;
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8B95A9;
            --border-color: rgba(0, 240, 255, 0.18);
            --border-glow: rgba(0, 240, 255, 0.45);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 4.5rem;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: var(--accent-secondary);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, .btn {
            cursor: pointer;
            border: none;
            font-family: inherit;
            transition: all var(--transition-base);
        }
        
        button:focus-visible, a:focus-visible, .btn:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
        }
        
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            padding: 0.75rem 0;
            transition: all var(--transition-base);
        }
        
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--border-glow);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        
        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            color: var(--text-primary);
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        
        .logo-link:hover {
            color: var(--accent-secondary);
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--accent-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.45);
        }
        
        .logo-text {
            font-weight: 800;
            font-size: 1.05rem;
            line-height: 1.3;
            max-width: 260px;
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-wrap: wrap;
        }
        
        .main-nav a {
            padding: 0.55rem 1.1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        
        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        
        .main-nav a.active {
            color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        
        .btn-login {
            padding: 0.55rem 1.3rem;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 50px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--accent-secondary);
        }
        
        .btn-signup {
            padding: 0.6rem 1.5rem;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 50px;
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.35);
            white-space: nowrap;
            transition: all var(--transition-base);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.5);
            color: #fff;
        }
        
        .btn-signup:active {
            transform: translateY(0) scale(0.97);
        }
        
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 0.5rem 0.75rem;
            color: var(--text-primary);
            font-size: 1.2rem;
        }
        
        /* ===== HERO ===== */
        .hero-category {
            padding: 8rem 0 4rem;
            background: radial-gradient(ellipse at 20% 30%, rgba(0, 82, 255, 0.18) 0%, transparent 55%),
                        radial-gradient(ellipse at 80% 70%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
                        var(--bg-primary);
            position: relative;
            overflow: hidden;
        }
        
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                linear-gradient(rgba(0, 240, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }
        
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.2rem;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            color: var(--accent-secondary);
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 1.5rem;
        }
        
        .hero-badge i {
            font-size: 0.8rem;
            animation: pulse-dot 2s infinite;
        }
        
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        
        .hero-category h1 {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
            max-width: 850px;
        }
        
        .hero-category h1 .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 2.25rem;
        }
        
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        
        .btn-primary-gradient {
            padding: 0.9rem 2.2rem;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        
        .btn-primary-gradient:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 240, 255, 0.55);
            color: #fff;
        }
        
        .btn-outline-cyber {
            padding: 0.85rem 2rem;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        
        .btn-outline-cyber:hover {
            border-color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-secondary);
        }
        
        /* ===== SECTION GENERAL ===== */
        .section {
            padding: 4.5rem 0;
            position: relative;
        }
        
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        
        .section-header {
            margin-bottom: 3rem;
        }
        
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }
        
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
        }
        
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-secondary);
            margin-bottom: 0.75rem;
        }
        
        /* ===== METRICS DASHBOARD ===== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-bottom: 1rem;
        }
        
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .metric-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        
        .metric-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        
        .metric-card:hover::after {
            opacity: 1;
        }
        
        .metric-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        
        .metric-value {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.1;
            margin-bottom: 0.25rem;
        }
        
        .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        
        /* ===== SERVICE MATRIX ===== */
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        
        .service-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .service-item::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.04) 0%, transparent 60%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        
        .service-item:hover {
            border-color: var(--border-glow);
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .service-item:hover::before {
            opacity: 1;
        }
        
        .service-item > * {
            position: relative;
            z-index: 1;
        }
        
        .service-number {
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--accent-secondary);
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
            display: block;
        }
        
        .service-item h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }
        
        .service-item p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        .service-features {
            list-style: none;
            padding: 0;
            margin: 1.25rem 0 0;
        }
        
        .service-features li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: 0.4rem 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        
        .service-features li i {
            color: var(--accent-secondary);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        
        /* ===== COMPARISON ===== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: stretch;
        }
        
        .comparison-card {
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all var(--transition-base);
        }
        
        .comparison-card.negative {
            background: rgba(255, 0, 0, 0.06);
            border: 1px solid rgba(255, 80, 80, 0.25);
        }
        
        .comparison-card.positive {
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.3);
            box-shadow: var(--shadow-neon);
        }
        
        .comparison-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        
        .comparison-card.negative h3 {
            color: #ff6b6b;
        }
        
        .comparison-card.positive h3 {
            color: var(--accent-secondary);
        }
        
        .comparison-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .comparison-list li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: 0.55rem 0;
            display: flex;
            align-items: flex-start;
            gap: 0.65rem;
            line-height: 1.6;
        }
        
        .comparison-list li i {
            margin-top: 0.2rem;
            flex-shrink: 0;
        }
        
        .comparison-card.negative .comparison-list li i {
            color: #ff6b6b;
        }
        
        .comparison-card.positive .comparison-list li i {
            color: var(--accent-secondary);
        }
        
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        
        .faq-question {
            width: 100%;
            padding: 1.25rem 1.5rem;
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            text-align: left;
            transition: all var(--transition-fast);
        }
        
        .faq-question:hover {
            color: var(--accent-secondary);
        }
        
        .faq-question i {
            transition: transform var(--transition-base);
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--accent-secondary);
        }
        
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        
        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        
        /* ===== CTA FORM ===== */
        .cta-section {
            padding: 4.5rem 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                        var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
        }
        
        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            padding: 3rem;
            position: relative;
            overflow: hidden;
        }
        
        .cta-card::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -10%;
            width: 60%;
            height: 80%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .cta-card h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--text-primary);
            position: relative;
            z-index: 1;
        }
        
        .cta-card p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
            line-height: 1.7;
        }
        
        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            position: relative;
            z-index: 1;
        }
        
        .cta-form input {
            flex: 1;
            min-width: 240px;
            padding: 0.9rem 1.4rem;
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-family: inherit;
            transition: all var(--transition-fast);
        }
        
        .cta-form input::placeholder {
            color: var(--text-muted);
        }
        
        .cta-form input:focus {
            outline: none;
            border-color: var(--accent-secondary);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
        }
        
        .cta-form .btn-primary-gradient {
            padding: 0.9rem 2.2rem;
            white-space: nowrap;
        }
        
        .cta-note {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 1rem;
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        
        .cta-note i {
            color: var(--accent-secondary);
        }
        
        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-color);
            padding: 3.5rem 0 2rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        
        .footer-brand .logo-text {
            display: block;
            font-size: 1rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
            max-width: 100%;
        }
        
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-secondary);
            margin-bottom: 1.1rem;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }
        
        .footer-col ul li a:hover {
            color: var(--accent-secondary);
            padding-left: 4px;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.75rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.45rem 1rem;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: 600;
        }
        
        .footer-badge i {
            color: var(--accent-secondary);
            font-size: 0.75rem;
        }
        
        /* ===== FAB ===== */
        .fab-support {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-secondary);
            color: var(--accent-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45), 0 4px 16px rgba(0, 0, 0, 0.4);
            opacity: 0.65;
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
        }
        
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.65), 0 8px 24px rgba(0, 0, 0, 0.5);
            animation-play-state: paused;
        }
        
        .fab-support:active {
            transform: scale(0.95);
            border-color: #FF007F;
            color: #FF007F;
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.5);
        }
        
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blink-neon 1.2s ease-in-out infinite;
        }
        
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 0.9; }
        }
        
        @keyframes blink-neon {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .hero-category h1 {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-bottom: 1px solid var(--border-color);
                padding: 1rem 1.5rem;
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
                box-shadow: var(--shadow-lg);
            }
            
            .main-nav.open {
                display: flex;
            }
            
            .main-nav a {
                padding: 0.8rem 1.2rem;
                border-radius: 10px;
                text-align: left;
            }
            
            .logo-text {
                font-size: 0.85rem;
                max-width: 180px;
            }
            
            .hero-category {
                padding: 6.5rem 0 3rem;
            }
            
            .hero-category h1 {
                font-size: 1.8rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .section {
                padding: 3rem 0;
            }
            
            .section-header h2 {
                font-size: 1.6rem;
            }
            
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            
            .cta-card {
                padding: 2rem 1.5rem;
            }
            
            .cta-card h2 {
                font-size: 1.5rem;
            }
            
            .cta-form input {
                min-width: 100%;
            }
            
            .cta-form .btn-primary-gradient {
                width: 100%;
                justify-content: center;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-badges {
                justify-content: center;
            }
            
            .fab-support {
                left: 1rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            
            .service-matrix {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            
            .hero-category h1 {
                font-size: 1.5rem;
            }
            
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }
            
            .nav-actions .btn-login {
                padding: 0.5rem 0.9rem;
                font-size: 0.8rem;
            }
            
            .nav-actions .btn-signup {
                padding: 0.5rem 1.1rem;
                font-size: 0.8rem;
            }
            
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: #111827;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-color: #1F2937;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-neon-strong: 0 0 35px rgba(0, 240, 255, 0.55);
            --font-sans: 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', sans-serif;
            --container-max: 1280px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            width: 100%;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(31, 41, 55, 0.7);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: var(--spacing-md);
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            max-width: 320px;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #0F0C20;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
        }

        .logo-text {
            font-size: 15px;
            font-weight: 800;
            letter-spacing: -0.3px;
            line-height: 1.25;
            color: var(--text-primary);
        }

        .logo-text .highlight {
            color: var(--accent-cyan);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }

        .main-nav a {
            padding: 10px 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            padding: 11px 22px;
            font-size: 14px;
            font-weight: 800;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(0, 240, 255, 0.45);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.97);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
            flex-shrink: 0;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: var(--spacing-sm) var(--spacing-md);
            background: rgba(15, 12, 32, 0.98);
            border-top: 1px solid var(--border-color);
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }

        .mobile-nav.open {
            max-height: 400px;
        }

        .mobile-nav a {
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* ===== HERO ===== */
        .hero {
            padding: 140px 0 var(--spacing-xl);
            background: linear-gradient(180deg, #0F0C20 0%, #0B1A30 55%, #0F0C20 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 50% -20%, rgba(0, 240, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.3px;
        }

        .hero-badge i {
            font-size: 14px;
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1.2px;
            margin-bottom: var(--spacing-md);
            color: var(--text-primary);
        }

        .hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-lg);
        }

        .btn-primary-hero {
            padding: 15px 32px;
            font-size: 16px;
            font-weight: 800;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: var(--radius-md);
            box-shadow: 0 6px 28px rgba(204, 255, 0, 0.35);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 38px rgba(0, 240, 255, 0.5);
        }

        .btn-primary-hero:active {
            transform: translateY(-1px) scale(0.98);
        }

        .btn-secondary-hero {
            padding: 15px 28px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-secondary-hero:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat .stat-number {
            font-size: 24px;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            max-width: 480px;
            aspect-ratio: 1 / 1.1;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-neon-strong);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-image-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.15) 0%, rgba(15, 12, 32, 0.5) 100%);
            pointer-events: none;
        }

        .hero-floating-card {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-md);
        }

        .hero-floating-card i {
            font-size: 28px;
            color: var(--accent-lime);
        }

        .hero-floating-card .fc-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-floating-card .fc-value {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-primary);
        }

        /* ===== SECTION SHARED ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: var(--spacing-sm);
        }

        .section-title {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 900;
            letter-spacing: -0.8px;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 640px;
        }

        /* ===== DOWNLOAD CTA ===== */
        .download-cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(204, 255, 0, 0.06) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .download-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .download-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .download-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

        .download-card .dc-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
        }

        .download-card .dc-icon.android {
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
        }

        .download-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
        }

        .download-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 800;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            align-self: flex-start;
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.25);
        }

        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.4);
        }

        .btn-download:active {
            transform: translateY(0) scale(0.97);
        }

        /* ===== STEPS ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #0F0C20;
            font-size: 20px;
            font-weight: 900;
            margin-bottom: var(--spacing-md);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FEATURES ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .feature-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            transition: all var(--transition-base);
        }

        .feature-item:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.15);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .feature-item h4 {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .feature-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
        }

        .faq-question {
            width: 100%;
            padding: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-question i {
            font-size: 16px;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }

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

        .faq-answer p {
            padding: 0 var(--spacing-md) var(--spacing-md);
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== FLOATING ACTION BUTTON ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            cursor: pointer;
            opacity: 0.65;
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
            position: relative;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime), var(--accent-cyan));
            z-index: -1;
            animation: fab-border-flow 3s linear infinite;
        }

        @keyframes fab-border-flow {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); opacity: 0.65; }
            50% { transform: translateY(-6px); opacity: 0.9; }
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            animation-play-state: paused;
        }

        .fab:active {
            transform: scale(0.95);
        }

        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: fab-notif-blink 1.2s ease-in-out infinite;
        }

        @keyframes fab-notif-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0F0C20;
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .logo-text {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            display: block;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            font-size: 12px;
            font-weight: 700;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: 50px;
        }

        .footer-badge i {
            color: var(--accent-lime);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .hero-visual {
                order: -1;
            }

            .hero-image-wrapper {
                max-width: 360px;
                margin: 0 auto;
            }

            .hero-floating-card {
                left: 50%;
                transform: translateX(-50%);
                bottom: -16px;
            }

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

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-nav {
                display: flex;
            }

            .hero {
                padding: 110px 0 var(--spacing-lg);
            }

            .hero h1 {
                font-size: clamp(28px, 6vw, 38px);
            }

            .hero-stats {
                gap: var(--spacing-md);
            }

            .hero-stat .stat-number {
                font-size: 20px;
            }

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

            .steps-grid,
            .features-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .fab {
                width: 48px;
                height: 48px;
                font-size: 20px;
                left: 12px;
                bottom: 80px;
            }
        }

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

            .header-inner {
                min-height: 64px;
                gap: var(--spacing-sm);
            }

            .logo-text {
                font-size: 13px;
                max-width: 200px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .hero {
                padding: 100px 0 var(--spacing-md);
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary-hero,
            .btn-secondary-hero {
                justify-content: center;
                width: 100%;
            }

            .section-title {
                font-size: 24px;
            }

            .download-card {
                padding: var(--spacing-md);
            }

            .btn-download {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1D1D1F;
            --bg-elevated: #232326;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --accent-glow: rgba(255, 69, 0, 0.4);
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9A9A9E;
            --border-color: #2A2A2D;
            --border-glow: rgba(255, 69, 0, 0.6);
            --success: #22C55E;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px var(--accent-glow);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
            --section-spacing: 80px;
            --section-spacing-mobile: 50px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
            font-size: inherit;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 69, 0, 0.15);
            height: var(--nav-height);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 11, 11, 0.98);
            border-bottom-color: rgba(255, 69, 0, 0.3);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .logo-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: var(--transition-base);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .main-nav a.active {
            color: var(--accent-primary);
            background: rgba(255, 69, 0, 0.1);
            font-weight: 600;
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 20px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition-base);
        }

        .btn-login:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(255, 69, 0, 0.05);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            box-shadow: 0 4px 20px var(--accent-glow);
            transition: var(--transition-base);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--accent-glow);
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-primary);
            transition: var(--transition-base);
        }

        .mobile-toggle:hover {
            background: rgba(255, 69, 0, 0.1);
            border-color: var(--accent-primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: rgba(11, 11, 11, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 69, 0, 0.2);
            padding: 16px 24px 24px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition-base);
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition-base);
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
        }

        .mobile-menu a.active {
            color: var(--accent-primary);
            background: rgba(255, 69, 0, 0.1);
        }

        /* Page Banner */
        .page-banner {
            padding: calc(var(--nav-height) + 60px) 0 50px;
            background: linear-gradient(180deg, #1A0A04 0%, var(--bg-primary) 100%);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 400px;
            background: radial-gradient(ellipse at center, rgba(255, 69, 0, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--accent-primary);
        }

        .breadcrumb .separator {
            color: var(--accent-primary);
        }

        .breadcrumb .current {
            color: var(--accent-primary);
            font-weight: 600;
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 0%, #FFB088 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner .subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Hero Stats */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .stat-value {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Main Content */
        .main-content {
            padding: 0 0 var(--section-spacing);
        }

        .section {
            padding: var(--section-spacing) 0 0;
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 700px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Promotion Cards */
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .promo-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

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

        .promo-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(255, 69, 0, 0.15);
        }

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

        .promo-card.highlight {
            background: linear-gradient(135deg, #1D0A04 0%, #2A1208 100%);
            border-color: rgba(255, 69, 0, 0.4);
        }

        .promo-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            background: rgba(255, 69, 0, 0.1);
            color: var(--accent-primary);
            border: 1px solid rgba(255, 69, 0, 0.2);
        }

        .promo-tag.hot {
            background: rgba(255, 0, 0, 0.15);
            color: #FF5555;
            border-color: rgba(255, 0, 0, 0.3);
        }

        .promo-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .promo-card .promo-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .promo-value {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }

        .promo-value .amount {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.02em;
        }

        .promo-value .unit {
            font-size: 14px;
            color: var(--text-muted);
        }

        .promo-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            transition: var(--transition-base);
            box-shadow: 0 4px 15px var(--accent-glow);
        }

        .promo-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px var(--accent-glow);
        }

        /* Comparison Section */
        .comparison-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 50px;
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 30px;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            font-size: 15px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 69, 0, 0.05);
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        .comparison-table td {
            color: var(--text-secondary);
        }

        .comparison-table tr:hover td {
            background: rgba(255, 69, 0, 0.03);
        }

        .comparison-table .check {
            color: var(--success);
            font-weight: 700;
        }

        .comparison-table .highlight-row td {
            background: rgba(255, 69, 0, 0.08);
            color: var(--text-primary);
            font-weight: 600;
        }

        /* Steps / Process */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: var(--transition-base);
            position: relative;
        }

        .step-item:hover {
            border-color: var(--border-glow);
            transform: translateY(-2px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 4px 15px var(--accent-glow);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(255, 69, 0, 0.3);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition-base);
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--accent-primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 69, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-primary);
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--accent-primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1A0A04 0%, #2A1208 50%, #1A0A04 100%);
            border: 1px solid rgba(255, 69, 0, 0.3);
            border-radius: var(--radius-xl);
            padding: 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle at center, rgba(255, 69, 0, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: #fff;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            padding: 16px 32px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            box-shadow: 0 8px 30px var(--accent-glow);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px var(--accent-glow);
        }

        .btn-cta-secondary {
            padding: 16px 32px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-secondary:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(255, 69, 0, 0.05);
        }

        /* Floating Action Button */
        .fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(11, 11, 11, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-primary);
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px var(--accent-glow);
            opacity: 0.6;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px var(--accent-glow);
            color: #fff;
            background: var(--accent-primary);
        }

        .fab:active {
            transform: scale(0.95);
        }

        .fab .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: var(--danger);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blink 1.5s infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 69, 0, 0.15);
            padding: 60px 0 30px;
            margin-top: var(--section-spacing);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 18px;
            font-weight: 800;
            display: block;
            margin-bottom: 12px;
            white-space: normal;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-badge i {
            color: var(--accent-primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .promo-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

        @media (max-width: 768px) {
            :root {
                --section-spacing: 50px;
                --section-spacing-mobile: 40px;
                --nav-height: 64px;
            }

            .main-nav {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .logo-text {
                font-size: 14px;
                max-width: 180px;
            }

            .page-banner {
                padding: calc(var(--nav-height) + 40px) 0 40px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

            .page-banner .subtitle {
                font-size: 15px;
            }

            .section-header h2 {
                font-size: 26px;
            }

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

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

            .comparison-section {
                padding: 24px;
                overflow-x: auto;
            }

            .comparison-table {
                min-width: 600px;
            }

            .cta-section {
                padding: 32px 24px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .fab {
                left: 16px;
                bottom: 80px;
                width: 52px;
                height: 52px;
                font-size: 20px;
            }

            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .stat-value {
                font-size: 24px;
            }
        }

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

            .logo-text {
                font-size: 12px;
                max-width: 140px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .nav-auth .btn-login {
                padding: 8px 14px;
                font-size: 12px;
            }

            .nav-auth .btn-signup {
                padding: 8px 16px;
                font-size: 12px;
            }

            .page-banner h1 {
                font-size: 24px;
            }

            .section-header h2 {
                font-size: 22px;
            }

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

            .promo-card {
                padding: 20px;
            }

            .promo-value .amount {
                font-size: 26px;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                padding: 14px 24px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
        }