/* roulang page: index */
:root {
            --bg-primary: #0a0e1a;
            --bg-secondary: #0f1424;
            --bg-glass: rgba(15, 20, 36, 0.72);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gold: #ffd700;
            --accent-red: #ff2d55;
            --text-white: #ffffff;
            --text-silver: #cbd5e1;
            --text-muted: #94a3b8;
            --border-subtle: rgba(0, 240, 255, 0.12);
            --border-strong: rgba(0, 240, 255, 0.35);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 25px rgba(0, 240, 255, 0.55);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 55%), radial-gradient(ellipse at 80% 70%, rgba(0, 240, 255, 0.06) 0%, transparent 55%);
            background-attachment: fixed;
        }

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

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

        a:hover {
            color: var(--accent-cyan);
        }

        button, input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

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

        ::selection {
            background: var(--accent-blue);
            color: var(--text-white);
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-secondary);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border-strong);
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 14, 26, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 14, 26, 0.96);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 24px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.01em;
            color: var(--text-white);
            white-space: nowrap;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--text-white);
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }

        .nav-logo span {
            max-width: 210px;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .nav-links a {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-silver);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

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

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

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

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

        .btn-login {
            background: transparent;
            color: var(--text-silver);
            font-size: 0.875rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: color var(--transition), background var(--transition);
        }

        .btn-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 0.875rem;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-strong);
        }

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

        .mobile-menu-btn {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            transition: background var(--transition);
        }

        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* Mobile nav drawer */
        .mobile-nav {
            display: none;
            background: rgba(10, 14, 26, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 16px 24px 24px;
        }

        .mobile-nav.open {
            display: block;
            animation: slideDown 0.3s ease forwards;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
        }

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

        .mobile-auth {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        /* Hero Section */
        .hero {
            position: relative;
            padding: 80px 0 64px;
            overflow: hidden;
            background-image: linear-gradient(180deg, rgba(10, 14, 26, 0.88) 0%, rgba(10, 14, 26, 0.92) 100%);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.16;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, var(--bg-primary));
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-strong);
            color: var(--accent-cyan);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.25rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-white);
            max-width: 860px;
            margin: 0 auto 20px;
        }

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

        .hero-subtitle {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-silver);
            max-width: 720px;
            margin: 0 auto 36px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-primary-hero {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            cursor: pointer;
            box-shadow: var(--shadow-glow-strong);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
        }

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

        .btn-secondary-hero {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            color: var(--text-silver);
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: border-color var(--transition), color var(--transition), background var(--transition);
        }

        .btn-secondary-hero:hover {
            border-color: var(--border-strong);
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }

        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

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

        .hero-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }

        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-stage {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-glow);
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .hero-stage img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .hero-stage-glow {
            position: absolute;
            bottom: -40px;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 80px;
            background: radial-gradient(ellipse, rgba(0, 240, 255, 0.35), transparent);
            filter: blur(30px);
            pointer-events: none;
        }

        /* Section base */
        .section {
            padding: 64px 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
            color: var(--accent-cyan);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-silver);
        }

        /* Glass Card */
        .glass-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

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

        /* Sell points three columns */
        .sell-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .sell-card {
            background: rgba(15, 20, 36, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }

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

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

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

        .sell-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin: 0 auto 16px;
        }

        .sell-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .sell-card p {
            font-size: 0.88rem;
            line-height: 1.65;
            color: var(--text-silver);
        }

        /* Coupon grid */
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .coupon-card {
            background: var(--bg-glass);
            border: 1px dashed var(--border-strong);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

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

        .coupon-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-red), #ff6b8a);
            color: var(--text-white);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .coupon-title {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .coupon-desc {
            font-size: 0.87rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* Rules section */
        .rules-list {
            list-style: none;
            max-width: 760px;
            margin: 0 auto;
        }

        .rules-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

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

        .rules-list .rule-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.82rem;
            color: var(--accent-cyan);
        }

        /* CMS News list */
        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 28px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .news-item:hover {
            border-color: var(--border-strong);
            transform: translateX(4px);
            box-shadow: var(--shadow-glow);
        }

        .news-item .news-marker {
            flex-shrink: 0;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-item .news-title-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition);
        }

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

        .news-item .news-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
            display: flex;
            gap: 12px;
        }

        .news-recommend {
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            height: fit-content;
        }

        .news-recommend h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

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

        .news-recommend li {
            font-size: 0.86rem;
            color: var(--text-silver);
            line-height: 1.55;
            padding-left: 16px;
            border-left: 2px solid var(--accent-blue);
            transition: border-color var(--transition), color var(--transition);
        }

        .news-recommend li:hover {
            border-color: var(--accent-cyan);
            color: var(--text-white);
        }

        /* CTA section */
        .cta-band {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.1));
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.12);
            filter: blur(50px);
        }

        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(0, 82, 255, 0.12);
            filter: blur(60px);
        }

        .cta-band h3 {
            font-size: clamp(1.5rem, 2.8vw, 2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-band p {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .cta-band .btn-cta {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            cursor: pointer;
            box-shadow: var(--shadow-glow-strong);
            position: relative;
            z-index: 2;
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .cta-band .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.75);
        }

        /* Brand story band */
        .brand-story {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-story-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }

        .brand-story-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-story-text {
            text-align: left;
        }

        .brand-story-text h3 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .brand-story-text p {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .brand-story-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }

        .brand-story-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-silver);
        }

        .brand-story-points i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }

        /* Lead form */
        .lead-form-wrapper {
            max-width: 560px;
            margin: 0 auto;
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .lead-form-wrapper h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
            text-align: center;
        }

        .lead-form-wrapper .form-desc {
            font-size: 0.88rem;
            color: var(--text-silver);
            text-align: center;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 6px;
        }

        .form-group input {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 0.9rem;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-group input::placeholder {
            color: var(--text-muted);
        }

        .form-group input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.12);
        }

        .form-privacy {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 12px;
            line-height: 1.55;
        }

        .btn-submit-form {
            width: 100%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            padding: 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .btn-submit-form:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-strong);
        }

        /* Floating bottom CTA */
        .floating-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(10, 14, 26, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-strong);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .floating-cta-bar.visible {
            transform: translateY(0);
        }

        .floating-cta-bar .fcta-text {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .floating-cta-bar .fcta-text strong {
            color: var(--accent-cyan);
        }

        .btn-fcta {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 0.88rem;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            white-space: nowrap;
            flex-shrink: 0;
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .btn-fcta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-strong);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 95;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(10, 14, 26, 0.85);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            animation: fabFloat 3s ease-in-out infinite;
            transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.65);
        }

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

        .fab-left .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-red);
            border: 2px solid var(--bg-primary);
            animation: blinkDot 1.5s ease-in-out infinite;
        }

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

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

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 32px;
            margin-bottom: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            font-size: 0.84rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-badges {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 6px;
        }

        .footer-badges span {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--text-muted);
            padding: 5px 12px;
            border: 1px solid var(--border-subtle);
            border-radius: 999px;
            letter-spacing: 0.03em;
        }

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

            .news-layout {
                grid-template-columns: 1fr;
            }

            .brand-story {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

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

            .nav-auth {
                display: none;
            }

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

            .nav-logo span {
                max-width: 160px;
                font-size: 0.82rem;
            }

            .hero {
                padding: 56px 0 48px;
            }

            .hero-stats {
                gap: 20px;
            }

            .hero-stat .stat-number {
                font-size: 1.35rem;
            }

            .sell-grid,
            .coupon-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 48px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .cta-band {
                padding: 32px 20px;
            }

            .lead-form-wrapper {
                padding: 28px 20px;
            }

            .nav-wrapper {
                padding: 12px 16px;
            }

            .floating-cta-bar {
                padding: 10px 16px;
            }

            .floating-cta-bar .fcta-text {
                font-size: 0.75rem;
            }

            .btn-fcta {
                padding: 8px 16px;
                font-size: 0.78rem;
            }

            .fab-left {
                bottom: 80px;
                left: 12px;
                width: 46px;
                height: 46px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }

            .nav-logo span {
                max-width: 130px;
                font-size: 0.72rem;
            }

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

            .hero-subtitle {
                font-size: 0.9rem;
            }

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

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

            .hero-stats {
                gap: 16px;
            }

            .hero-stat .stat-number {
                font-size: 1.15rem;
            }

            .hero-stat .stat-label {
                font-size: 0.7rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .section-desc {
                font-size: 0.88rem;
            }

            .rules-list li {
                font-size: 0.88rem;
                padding: 12px 0;
            }

            .news-item {
                padding: 12px 14px;
                gap: 10px;
            }

            .news-item .news-title-link {
                font-size: 0.86rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .container {
                padding: 0 16px;
            }

            .floating-cta-bar {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .floating-cta-bar .fcta-text {
                white-space: normal;
            }
        }

/* roulang page: article */
:root {
            --bg-dark: #08090F;
            --bg-panel: rgba(13, 17, 30, 0.75);
            --primary: #0052FF;
            --accent: #00F0FF;
            --text: #FFFFFF;
            --text-muted: #CBD5E1;
            --border: rgba(0, 240, 255, 0.2);
            --glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-dark);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 40;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: -0.02em;
            color: #fff;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            align-items: center;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: color 0.2s, text-shadow 0.2s;
            padding: 0.25rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--accent);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .login-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: #fff;
            opacity: 0.85;
            transition: opacity 0.2s;
        }
        .login-link:hover {
            opacity: 1;
        }
        .signup-btn {
            background: var(--primary);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 0.6rem 1.4rem;
            border-radius: 9999px;
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.5);
            transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
        }
        .signup-btn:hover {
            background: var(--accent);
            color: #08101f;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.7);
        }
        .signup-btn:active {
            transform: scale(0.97);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }
        /* Hero */
        .hero {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: 6rem 0 4rem;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,9,15,0.95) 0%, rgba(13,17,30,0.7) 50%, rgba(8,9,15,0.9) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            letter-spacing: 0.02em;
            margin-bottom: 1.2rem;
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
            text-wrap: balance;
        }
        .hero-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-bottom: 2rem;
            color: #94a3b8;
            font-size: 0.85rem;
        }
        .hero-meta i {
            color: var(--accent);
            margin-right: 0.4rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 0.85rem 1.8rem;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 16px rgba(0, 82, 255, 0.5);
            transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #08101f;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.7);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--border);
            color: #fff;
            font-weight: 500;
            padding: 0.85rem 1.8rem;
            border-radius: 9999px;
            cursor: pointer;
            transition: border-color 0.2s, background 0.2s, color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent);
        }
        .hero-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }
        .hero-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .hero-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(8,9,15,0.7) 100%);
            pointer-events: none;
        }
        .hero-corner-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(220, 38, 38, 0.9);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.4rem 0.8rem;
            border-radius: 9999px;
            z-index: 3;
            box-shadow: 0 0 10px rgba(220, 38, 38, 0.6);
        }
        /* Article body */
        .article-section {
            padding: 4rem 0;
        }
        .article-container {
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-body {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            backdrop-filter: blur(6px);
            color: #e2e8f0;
        }
        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.6rem;
            color: #fff;
        }
        .article-body p {
            margin-bottom: 1.2rem;
            line-height: 1.7;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.2rem 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 3px solid var(--accent);
            padding-left: 1rem;
            margin: 1.5rem 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
        }
        .article-not-found {
            background: var(--bg-panel);
            border: 1px solid rgba(220, 38, 38, 0.3);
            border-radius: var(--radius);
            padding: 3rem;
            text-align: center;
        }
        .article-not-found h2 {
            color: #f87171;
            margin-bottom: 1rem;
        }
        .article-not-found a {
            color: var(--accent);
            text-decoration: underline;
        }
        /* Tips cards */
        .tips-section {
            padding: 4rem 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 0.8rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 2rem;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .tip-card {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
            backdrop-filter: blur(6px);
        }
        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--glow);
            border-color: rgba(0, 240, 255, 0.4);
        }
        .tip-card img {
            height: 160px;
            width: 100%;
            object-fit: cover;
        }
        .tip-card-content {
            padding: 1.2rem;
        }
        .tip-card-content h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.6rem;
        }
        .tip-card-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        /* Scenario demo */
        .scenario-section {
            padding: 4rem 0;
            background: rgba(0, 82, 255, 0.05);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .scenario-image img {
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .scenario-content ul {
            list-style: none;
            margin-top: 1rem;
        }
        .scenario-content li {
            padding-left: 1.6rem;
            position: relative;
            margin-bottom: 0.8rem;
            color: var(--text-muted);
        }
        .scenario-content li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--accent);
        }
        /* Social proof */
        .social-proof {
            padding: 4rem 0;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .testimonial-card {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            backdrop-filter: blur(6px);
        }
        .testimonial-card .stars {
            color: #fbbf24;
            margin-bottom: 0.7rem;
        }
        .testimonial-card p {
            color: #e2e8f0;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
        }
        .testimonial-author .name {
            font-weight: 600;
            font-size: 0.9rem;
        }
        /* FAQ */
        .faq-section {
            padding: 4rem 0;
            background: rgba(0, 240, 255, 0.03);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #fff;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            transition: transform 0.2s;
            color: var(--accent);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-content {
            padding: 0 1.2rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        /* CTA */
        .cta-section {
            padding: 4rem 0;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius);
            padding: 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 60%);
            animation: pulse 6s infinite;
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.6; }
            50% { transform: scale(1.1); opacity: 0.9; }
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 1.5rem;
            position: relative;
        }
        /* Footer */
        .site-footer {
            background: #06070d;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #fff;
            line-height: 1.4;
        }
        .footer-brand p {
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #fff;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 0.5rem;
        }
        .footer-col a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .footer-bottom p {
            color: #64748b;
            font-size: 0.85rem;
        }
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            color: #94a3b8;
            font-size: 0.8rem;
        }
        .footer-badges span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-badges i {
            color: var(--accent);
        }
        /* Bottom fixed conversion bar */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 35;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0, 240, 255, 0.25);
            padding: 0.75rem 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .fixed-bottom-bar p {
            font-size: 0.85rem;
            color: #cbd5e1;
        }
        /* FAB */
        .cyber-fab {
            position: fixed;
            left: 1rem;
            bottom: 5.5rem;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), linear-gradient(135deg, #00f0ff, #0052ff);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 9999px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
            opacity: 0.7;
            color: #fff;
            cursor: pointer;
        }
        .cyber-fab:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
        }
        .cyber-fab i {
            font-size: 1.6rem;
            color: #00f0ff;
        }
        .cyber-fab .notification-dot {
            position: absolute;
            top: 0;
            right: 0;
            width: 12px;
            height: 12px;
            background: #ef4444;
            border-radius: 50%;
            border: 2px solid #08090f;
            animation: blink 1.2s infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-image {
                display: none;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-meta {
                justify-content: center;
            }
            .tips-grid,
            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                padding: 1rem;
                gap: 0.8rem;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-actions {
                display: none;
            }
            .hero {
                min-height: 480px;
                padding: 5rem 0 3rem;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .tips-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                padding: 1.2rem;
            }
            .cta-box {
                padding: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fixed-bottom-bar {
                flex-direction: column;
                text-align: center;
                padding: 0.6rem;
            }
            .fixed-bottom-bar .btn-primary {
                width: 100%;
                justify-content: center;
            }
            .cyber-fab {
                left: 0.75rem;
                bottom: 4.5rem;
                width: 48px;
                height: 48px;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted2: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.25);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(0, 240, 255, 0.18);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.45);
            --glow-blue: 0 0 30px rgba(0, 82, 255, 0.45);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-panel: 0 12px 40px rgba(0, 0, 0, 0.55);
            --transition-base: all 200ms ease-in-out;
            --transition-smooth: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'Be Vietnam Pro', 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        ::selection {
            background-color: rgba(0, 240, 255, 0.25);
            color: #fff;
        }

        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #0a0e18;
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(0, 240, 255, 0.4);
            border-radius: 20px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 240, 255, 0.65);
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(8, 9, 15, 0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.22);
            box-shadow: 0 10px 35px rgba(0, 0, 0, 0.55);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 72px;
            flex-wrap: nowrap;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            max-width: 220px;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(0, 82, 255, 0.3));
            border-radius: 12px;
            border: 1px solid rgba(0, 240, 255, 0.35);
            color: var(--accent-cyan);
            font-size: 20px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 1rem;
            line-height: 1.25;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .logo-text span {
            display: block;
            font-size: 0.68rem;
            font-weight: 500;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-silver);
            padding: 8px 2px;
            position: relative;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav-links li a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 20px;
            transition: var(--transition-base);
        }

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

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

        .nav-links li a.active {
            color: var(--accent-cyan);
        }

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

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

        .btn-login {
            font-size: 0.86rem;
            font-weight: 600;
            color: var(--text-silver);
            padding: 9px 16px;
            border-radius: 8px;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-signup {
            font-size: 0.86rem;
            font-weight: 700;
            color: #fff;
            padding: 9px 18px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: 1px solid rgba(0, 102, 255, 0.5);
            box-shadow: 0 0 16px rgba(0, 82, 255, 0.35);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 0 24px rgba(0, 82, 255, 0.6);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            transition: var(--transition-base);
        }

        .hamburger span {
            width: 20px;
            height: 2px;
            background: var(--text-white);
            border-radius: 20px;
            transition: var(--transition-base);
        }

        .hamburger:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.3);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--bg-navy);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 12px 20px;
            gap: 4px;
        }

        .mobile-menu a {
            padding: 10px 12px;
            color: var(--text-silver);
            font-weight: 500;
            border-radius: 8px;
            transition: var(--transition-base);
        }

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

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png'), var(--hero-pattern);
            background-size: cover;
            background-position: center;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: 80px 0 70px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.22), transparent 60%),
                radial-gradient(ellipse at 80% 65%, rgba(0, 240, 255, 0.14), transparent 55%),
                linear-gradient(rgba(8, 9, 15, 0.9), rgba(8, 9, 15, 0.92));
            pointer-events: none;
        }

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

        .hero-grid {
            display: grid;
            grid-template-columns: 1.08fr 0.92fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.09);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 100px;
            padding: 7px 14px;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
        }

        .hero h1 {
            font-size: 2.55rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: #fff;
            margin: 0 0 18px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #4db8ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 0 24px;
        }

        .hero-badges-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 26px;
        }

        .bubble-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 0.83rem;
            font-weight: 500;
            color: #e2e8f0;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 100px;
            padding: 8px 14px;
            backdrop-filter: blur(6px);
        }

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

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            padding: 14px 26px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), #0072ff);
            border: 1px solid rgba(0, 130, 255, 0.6);
            box-shadow: var(--glow-blue);
            transition: var(--transition-smooth);
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 38px rgba(0, 130, 255, 0.75);
            transform: translateY(-2px);
        }

        .btn-secondary-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.93rem;
            font-weight: 600;
            color: var(--accent-cyan);
            padding: 14px 22px;
            border-radius: 12px;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.35);
            transition: var(--transition-base);
        }

        .btn-secondary-ghost:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.6);
        }

        .hero-eligibility {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.83rem;
            color: var(--text-muted2);
        }

        .hero-eligibility i {
            color: var(--accent-cyan);
            font-size: 14px;
        }

        .hero-panel {
            background: var(--glass-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-panel);
            padding: 28px;
        }

        .hero-panel h3 {
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin: 0 0 16px;
        }

        .hero-stat-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .hero-stat-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .hero-stat-list li:last-child {
            border-bottom: none;
        }

        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--text-silver);
        }

        .hero-stat-value {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .hero-stat-value small {
            font-weight: 500;
            font-size: 0.85rem;
            color: var(--accent-cyan);
        }

        /* ========== SECTION GENERAL ========== */
        .section {
            padding: 70px 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-navy);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.25;
        }

        .section-header p {
            font-size: 0.97rem;
            color: var(--text-silver);
            max-width: 600px;
            margin: 0;
        }

        /* ========== BENEFITS SECTION ========== */
        .benefits-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.85fr;
            gap: 20px;
        }

        .benefit-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .benefit-card::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -30%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            transition: var(--transition-smooth);
        }

        .benefit-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .benefit-card:hover::before {
            transform: scale(1.25);
        }

        .benefit-icon {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(0, 82, 255, 0.22));
            border-radius: 12px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 20px;
            margin-bottom: 14px;
        }

        .benefit-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }

        .benefit-card p {
            font-size: 0.92rem;
            color: var(--text-silver);
            margin: 0;
            line-height: 1.6;
        }

        .benefit-card.wide {
            padding: 28px 28px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12), rgba(0, 240, 255, 0.06));
            border-color: rgba(0, 240, 255, 0.22);
        }

        .benefit-card.wide h3 {
            font-size: 1.2rem;
        }

        .benefit-stack {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        /* ========== SCENARIO SECTION ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: 0.95fr 1.05fr;
            gap: 44px;
            align-items: center;
        }

        .scenario-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            position: relative;
        }

        .scenario-image img {
            width: 100%;
            height: 440px;
            object-fit: cover;
        }

        .scenario-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 9, 15, 0.55), transparent 40%);
            pointer-events: none;
        }

        .scenario-caption {
            position: absolute;
            bottom: 16px;
            left: 18px;
            right: 18px;
            z-index: 1;
            font-size: 0.82rem;
            font-weight: 600;
            color: #fff;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(8px);
            border-radius: 10px;
            padding: 12px 16px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .scenario-text h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.25;
        }

        .scenario-text p {
            font-size: 0.97rem;
            color: var(--text-silver);
            margin: 0 0 18px;
        }

        .scenario-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .scenario-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.93rem;
            color: #e2e8f0;
            line-height: 1.55;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            border-left: 2px solid var(--accent-cyan);
        }

        .scenario-list li i {
            color: var(--accent-cyan);
            font-size: 15px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ========== PROCESS STEPS ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            text-align: left;
            transition: var(--transition-base);
            position: relative;
        }

        .step-card:hover {
            border-color: rgba(0, 240, 255, 0.28);
            background: rgba(0, 240, 255, 0.05);
            transform: translateY(-3px);
        }

        .step-number {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
            display: inline-block;
            background: rgba(0, 240, 255, 0.09);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 30px;
            padding: 4px 12px;
        }

        .step-card h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 6px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-silver);
            margin: 0;
            line-height: 1.55;
        }

        /* ========== SOCIAL PROOF ========== */
        .proof-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-bottom: 34px;
        }

        .proof-stat {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: var(--transition-base);
        }

        .proof-stat:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.12);
        }

        .proof-stat .value {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .proof-stat .label {
            font-size: 0.9rem;
            color: var(--text-silver);
            font-weight: 500;
        }

        .testimonial-card {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 18px;
            align-items: start;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.1), rgba(0, 240, 255, 0.05));
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 26px 26px;
        }

        .testimonial-avatar {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.15);
            border-radius: 50%;
            border: 1px solid rgba(0, 240, 255, 0.35);
            color: var(--accent-cyan);
            font-size: 22px;
        }

        .testimonial-content p {
            font-size: 0.95rem;
            color: #e2e8f0;
            line-height: 1.65;
            margin: 0 0 10px;
            font-style: italic;
        }

        .testimonial-content .author {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
        }

        .testimonial-content .author-role {
            font-size: 0.82rem;
            color: var(--text-muted2);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item.active {
            border-color: rgba(0, 240, 255, 0.35);
            background: rgba(0, 240, 255, 0.04);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 0.96rem;
            font-weight: 600;
            color: #fff;
            transition: var(--transition-base);
            width: 100%;
            text-align: left;
        }

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

        .faq-question i {
            color: var(--accent-cyan);
            font-size: 16px;
            transition: transform 250ms ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 320px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin: 0;
            padding: 0 20px 18px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.18), rgba(0, 240, 255, 0.08));
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        }

        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.2;
        }

        .cta-inner p {
            font-size: 0.98rem;
            color: var(--text-silver);
            margin: 0 0 24px;
        }

        /* ========== FIXED BOTTOM BAR ========== */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 70;
            background: rgba(8, 9, 15, 0.97);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0, 240, 255, 0.3);
            box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.6);
            transform: translateY(100%);
            transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        .fixed-bottom-bar.visible {
            transform: translateY(0);
        }

        .bottom-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .bottom-bar-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.93rem;
            color: #e2e8f0;
            font-weight: 500;
        }

        .bottom-bar-text i {
            color: var(--accent-cyan);
            font-size: 18px;
        }

        .bottom-bar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-close-bar {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-silver);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition-base);
        }

        .btn-close-bar:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== FAB ========== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 60;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.75), rgba(8, 9, 15, 0.75)), linear-gradient(135deg, #00f0ff, #0052ff);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            color: var(--accent-cyan);
            font-size: 22px;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.5);
            opacity: 0.65;
            cursor: pointer;
            transition: var(--transition-smooth);
            animation: fabFloat 4s ease-in-out infinite;
        }

        .fab-support:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.08);
        }

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

        .fab-support .notification-dot {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #ff0055;
            border: 2px solid #08090F;
            border-radius: 50%;
            animation: blinkDot 2s ease-in-out infinite;
        }

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

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #06070c;
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.8fr 0.8fr;
            gap: 36px;
            margin-bottom: 28px;
        }

        .footer-brand h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .footer-brand p {
            font-size: 0.86rem;
            color: var(--text-muted2);
            line-height: 1.6;
            margin: 0;
            max-width: 380px;
        }

        .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin: 0 0 14px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

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

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-muted2);
            margin: 0;
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: var(--text-silver);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 6px 12px;
        }

        .footer-badges i {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.2rem;
            }

            .hero-grid {
                gap: 32px;
            }

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

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

            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .scenario-image img {
                height: 340px;
            }

            .proof-stats-row {
                grid-template-columns: repeat(3, 1fr);
            }

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

        @media (max-width: 768px) {
            .header-inner {
                min-height: 64px;
            }

            .logo-text {
                font-size: 0.9rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }

            .nav-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

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

            .header-actions .btn-login {
                padding: 8px 12px;
                font-size: 0.8rem;
            }

            .header-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .hero {
                padding: 50px 0 54px;
                min-height: auto;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .hero h1 {
                font-size: 1.85rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-panel {
                padding: 20px;
            }

            .section {
                padding: 48px 0;
            }

            .section-header h2 {
                font-size: 1.45rem;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .proof-stats-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .proof-stat {
                padding: 18px;
            }

            .proof-stat .value {
                font-size: 1.6rem;
            }

            .testimonial-card {
                grid-template-columns: 1fr;
                gap: 12px;
            }

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

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

            .fixed-bottom-bar {
                bottom: 0;
            }

            .bottom-bar-inner {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                gap: 10px;
                padding: 12px 16px;
            }

            .bottom-bar-actions {
                justify-content: center;
            }

            .fab-support {
                left: 12px;
                bottom: 120px;
                width: 48px;
                height: 48px;
                font-size: 19px;
            }
        }

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

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

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

            .btn-primary-glow,
            .btn-secondary-ghost {
                justify-content: center;
                text-align: center;
            }

            .benefit-card {
                padding: 18px 16px;
            }

            .benefit-card.wide {
                padding: 20px 18px;
            }

            .scenario-image img {
                height: 250px;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 15px 14px;
            }

            .faq-answer p {
                padding: 0 14px 15px;
                font-size: 0.86rem;
            }

            .cta-inner h2 {
                font-size: 1.45rem;
            }

            .logo-text span {
                display: none;
            }

            .logo-wrap {
                max-width: 160px;
            }

            .hero-badges-row {
                gap: 7px;
            }

            .bubble-badge {
                font-size: 0.78rem;
                padding: 6px 10px;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg: #08090F;
            --color-bg-secondary: #0D111E;
            --color-primary: #0052FF;
            --color-accent: #00F0FF;
            --color-text: #FFFFFF;
            --color-text-muted: #CBD5E1;
            --color-text-soft: #8B9BB4;
            --color-border: rgba(0, 82, 255, 0.3);
            --color-border-hover: rgba(0, 240, 255, 0.5);
            --glass-bg: rgba(13, 17, 30, 0.72);
            --glass-bg-light: rgba(13, 17, 30, 0.5);
            --border-radius-sm: 8px;
            --border-radius-md: 14px;
            --border-radius-lg: 20px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 82, 255, 0.25);
            --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s 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: 'Inter', 'Space Grotesk', system-ui, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

        /* Focus visible for accessibility */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-primary);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 0 16px rgba(0, 82, 255, 0.4);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--border-radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(0, 82, 255, 0.12);
        }
        .nav-links li a.active {
            color: var(--color-accent);
            background: rgba(0, 82, 255, 0.18);
            box-shadow: inset 0 0 0 1px rgba(0, 82, 255, 0.3);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-nav-login {
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-muted);
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: var(--border-radius-sm);
            transition: all var(--transition-fast);
        }
        .btn-nav-login:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-nav-signup {
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--color-primary), #0040c0);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--border-radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.3);
        }
        .btn-nav-signup:hover {
            box-shadow: 0 0 24px rgba(0, 82, 255, 0.5);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--border-radius-sm);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.3);
            padding: 16px 24px;
            z-index: 99;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu ul li a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--border-radius-sm);
            color: var(--color-text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .mobile-menu ul li a.active {
            color: var(--color-accent);
            background: rgba(0, 82, 255, 0.18);
        }
        .mobile-menu ul li a:hover {
            color: #fff;
            background: rgba(0, 82, 255, 0.12);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 140px 0 80px;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--color-bg);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.7) 0%, rgba(8,9,15,0.85) 50%, rgba(8,9,15,0.95) 100%);
            z-index: 1;
        }
        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image: 
                linear-gradient(rgba(0, 82, 255, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 82, 255, 0.06) 1px, transparent 1px);
            background-size: 60px 60px;
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(0, 82, 255, 0.2);
            border: 1px solid rgba(0, 240, 255, 0.35);
           border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            text-transform: uppercase;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.15);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-explosion {
            position: absolute;
            top: -10px;
            right: -8px;
            width: 64px;
            height: 64px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.9) 0%, rgba(0, 82, 255, 0.7) 60%, transparent 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.65rem;
            font-weight: 800;
            color: #08090F;
            transform: rotate(12deg);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.5);
            pointer-events: none;
        }
        .hero h1 {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 20px 0 16px;
            color: #fff;
        }
        .hero h1 span {
            color: var(--color-accent);
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-countdown {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--border-radius-md);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .hero-countdown-label {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            font-weight: 500;
        }
        .countdown-timer {
            display: flex;
            gap: 8px;
        }
        .countdown-box {
            background: rgba(0, 82, 255, 0.25);
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 6px;
            padding: 6px 10px;
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-accent);
            min-width: 38px;
            text-align: center;
        }
        .btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: linear-gradient(135deg, var(--color-primary), #0040c0);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: var(--border-radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 82, 255, 0.55);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #0052FF, #00F0FF);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 24px;
            background: transparent;
            color: var(--color-text-muted);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid rgba(0, 82, 255, 0.35);
            border-radius: var(--border-radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            color: #fff;
            border-color: var(--color-accent);
            background: rgba(0, 82, 255, 0.12);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual-panel {
            position: relative;
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-glass);
            overflow: hidden;
        }
        .hero-visual-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), transparent);
        }
        .hero-visual-title {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-visual-title i {
            color: var(--color-accent);
        }
        .hero-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 16px;
        }
        .stat-box {
            background: rgba(0, 82, 255, 0.1);
            border: 1px solid rgba(0, 82, 255, 0.25);
            border-radius: var(--border-radius-sm);
            padding: 14px 16px;
        }
        .stat-box .stat-value {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-accent);
        }
        .stat-box .stat-label {
            font-size: 0.8rem;
            color: var(--color-text-soft);
            margin-top: 2px;
        }
        .hero-img-wrap {
            margin-top: 16px;
            border-radius: var(--border-radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 82, 255, 0.25);
        }
        .hero-img-wrap img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius-md);
        }

        /* ========== TRUST BAR ========== */
        .trust-bar {
            padding: 28px 0;
            background: var(--color-bg-secondary);
            border-top: 1px solid rgba(0, 82, 255, 0.15);
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
        }
        .trust-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .trust-item i {
            color: var(--color-accent);
            font-size: 1rem;
        }

        /* ========== MAIN SECTIONS ========== */
        main {
            min-height: 100vh;
        }
        .section {
            padding: 72px 0;
        }
        .section-dark {
            background: var(--color-bg-secondary);
        }
        .section-title {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 32px;
        }
        .section-subtitle {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.02em;
            text-transform: uppercase;
            display: inline-block;
            margin-bottom: 10px;
        }

        /* Content layout */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .content-block {
            display: grid;
            grid-template-columns: 1fr 0.8fr;
            gap: 32px;
            align-items: start;
        }
        .content-block.reverse {
            grid-template-columns: 0.8fr 1fr;
        }
        .content-text {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .content-text ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 16px;
        }
        .content-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .content-text ul li i {
            color: var(--color-accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .content-image {
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-glass);
        }
        .content-image img {
            border-radius: var(--border-radius-lg);
        }

        /* Risk control step list */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 24px;
        }
        .step-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 20px;
            background: rgba(0, 82, 255, 0.08);
            border: 1px solid rgba(0, 82, 255, 0.2);
            border-radius: var(--border-radius-md);
            transition: all var(--transition-fast);
        }
        .step-item:hover {
            border-color: var(--color-accent);
            background: rgba(0, 82, 255, 0.14);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* ========== TABLE OF CONTENT ========== */
        .toc-box {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-lg);
            padding: 24px 28px;
            box-shadow: var(--shadow-glass);
            margin-top: 32px;
        }
        .toc-box h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .toc-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .toc-list a {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-fast);
        }
        .toc-list a:hover {
            color: var(--color-accent);
            transform: translateX(4px);
        }
        .toc-list a i {
            font-size: 0.7rem;
        }

        /* ========== TESTIMONIAL / SOCIAL PROOF ========== */
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .proof-item {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-md);
            padding: 20px;
            box-shadow: var(--shadow-glass);
            transition: all var(--transition-fast);
        }
        .proof-item:hover {
            border-color: var(--color-accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .proof-quote {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            font-style: italic;
        }
        .proof-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .proof-avatar {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.75rem;
        }
        .proof-name {
            font-size: 0.8rem;
            font-weight: 600;
            color: #fff;
        }
        .proof-role {
            font-size: 0.7rem;
            color: var(--color-text-soft);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 32px;
        }
        .faq-item {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.4);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question i {
            color: var(--color-accent);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
            border-top: 1px solid rgba(0, 82, 255, 0.2);
        }
        .cta-box {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-glass);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-box h2 {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }
        .cta-box p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            max-width: 480px;
            line-height: 1.6;
        }
        .cta-btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid rgba(0, 82, 255, 0.25);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 0.9fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h4 {
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--color-text-soft);
            line-height: 1.5;
        }
        .footer-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: rgba(0, 82, 255, 0.1);
            border: 1px solid rgba(0, 82, 255, 0.2);
            border-radius: 6px;
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .footer-badges i {
            color: var(--color-accent);
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 2px solid;
            border-image: linear-gradient(135deg, var(--color-primary), var(--color-accent)) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
            animation-play-state: paused;
        }
        .fab:active {
            transform: scale(0.92);
            border-color: var(--color-accent);
        }
        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #ff007f;
            border: 2px solid var(--color-bg);
            border-radius: 50%;
            animation: blink-notification 1.5s ease-in-out infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.9; }
        }
        @keyframes blink-notification {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== BOTTOM CONVERSION BAR ========== */
        .bottom-convert-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--color-border);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            transform: translateY(100%);
            transition: transform var(--transition-slow);
        }
        .bottom-convert-bar.visible {
            transform: translateY(0);
        }
        .bottom-bar-text {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex: 1;
            min-width: 200px;
        }
        .bottom-bar-text strong {
            color: var(--color-accent);
        }
        .bottom-bar-btn {
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--color-primary), #0040c0);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: var(--border-radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 16px rgba(0, 82, 255, 0.3);
        }
        .bottom-bar-btn:hover {
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.5);
            transform: translateY(-2px);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .content-block {
                grid-template-columns: 1fr;
            }
            .content-block.reverse {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions .btn-nav-login {
                display: none;
            }
            .nav-actions .btn-nav-signup {
                display: inline-flex;
            }
            .hero {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .proof-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-box {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-btn-group {
                width: 100%;
            }
            .cta-btn-group .btn-primary,
            .cta-btn-group .btn-secondary {
                flex: 1;
                justify-content: center;
            }
            .bottom-convert-bar {
                padding: 10px 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .bottom-bar-btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .fab {
                bottom: 110px;
            }
            .hero-explosion {
                width: 52px;
                height: 52px;
                font-size: 0.55rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .btn-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .trust-grid {
                flex-direction: column;
                gap: 12px;
            }
            .hero-countdown {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .countdown-timer {
                flex-wrap: wrap;
            }
            .header-inner {
                height: 60px;
            }
            .logo-link {
                font-size: 0.85rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .mobile-menu {
                top: 60px;
            }
        }