/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #12182A;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8A94A6;
            --border-neon: rgba(0, 240, 255, 0.35);
            --border-soft: rgba(255, 255, 255, 0.08);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.4);
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.45);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            transition: all var(--transition-fast);
        }
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            padding: 14px 0;
            transition: all var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.6);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .brand-logo span {
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-silver);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-outline-login {
            background: transparent;
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-outline-login:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .btn-solid-signup {
            background: linear-gradient(135deg, var(--accent-blue), #0038B8);
            border: none;
            color: white;
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 700;
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-fast);
        }
        .btn-solid-signup:hover {
            background: linear-gradient(135deg, #0A62FF, var(--accent-blue));
            box-shadow: 0 6px 24px rgba(0, 82, 255, 0.6);
            color: white;
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-soft);
            color: var(--text-white);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .mobile-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        /* Hero - Full width banner */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            background-attachment: fixed;
            padding: 80px 0;
            isolation: isolate;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.88) 0%, rgba(13, 17, 30, 0.75) 50%, rgba(8, 9, 15, 0.92) 100%);
            z-index: -1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 82, 255, 0.18) 0%, transparent 60%);
            z-index: -1;
        }
        .hero-content {
            max-width: 780px;
            position: relative;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 24px;
            animation: pulse-badge 2.5s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 10px rgba(0, 240, 255, 0.2); }
            50% { box-shadow: 0 0 22px rgba(0, 240, 255, 0.45); }
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF 30%, #CBD5E1 70%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.7;
            color: var(--text-silver);
            max-width: 650px;
            margin-bottom: 36px;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .btn-primary-cta {
            background: linear-gradient(135deg, var(--accent-blue), #0040C8);
            border: none;
            color: white;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(0, 82, 255, 0.45);
            transition: all var(--transition-smooth);
            letter-spacing: 0.01em;
        }
        .btn-primary-cta:hover {
            background: linear-gradient(135deg, #0A62FF, var(--accent-blue));
            box-shadow: 0 12px 36px rgba(0, 82, 255, 0.65);
            transform: translateY(-3px);
            color: white;
        }
        .btn-secondary-cta {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            padding: 14px 28px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            backdrop-filter: blur(10px);
            transition: all var(--transition-smooth);
        }
        .btn-secondary-cta:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        /* Section general */
        .section {
            padding: 72px 0;
        }
        .section-header {
            margin-bottom: 48px;
            max-width: 720px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .section-desc {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-muted);
        }
        /* Discount ladder / promotion steps */
        .promo-ladder {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 48px;
            border: 1px solid var(--border-soft);
            position: relative;
            overflow: hidden;
        }
        .promo-ladder::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .ladder-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-soft);
            position: relative;
            z-index: 1;
        }
        .ladder-item:last-child {
            border-bottom: none;
        }
        .ladder-step {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            color: white;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
        }
        .ladder-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-white);
        }
        .ladder-info p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0;
        }
        .ladder-bonus {
            margin-left: auto;
            text-align: right;
            flex-shrink: 0;
        }
        .ladder-bonus .bonus-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-gold);
        }
        .ladder-bonus .bonus-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* Package comparison table */
        .package-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            background: var(--bg-secondary);
        }
        .package-table {
            width: 100%;
            min-width: 720px;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .package-table th,
        .package-table td {
            padding: 20px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border-soft);
            vertical-align: middle;
        }
        .package-table th {
            background: rgba(0, 82, 255, 0.08);
            font-weight: 700;
            color: var(--text-white);
            font-size: 0.9rem;
            letter-spacing: 0.03em;
        }
        .package-table td {
            color: var(--text-silver);
        }
        .package-table .feature-name {
            font-weight: 600;
            color: var(--text-white);
            min-width: 180px;
        }
        .package-table .highlight-col {
            background: rgba(0, 240, 255, 0.04);
            border-left: 2px solid var(--accent-cyan);
        }
        .badge-recommended {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-gold), #FFA500);
            color: #000;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-left: 8px;
            text-transform: uppercase;
        }
        .check-icon {
            color: var(--accent-cyan);
            margin-right: 6px;
        }
        .btn-table-cta {
            background: linear-gradient(135deg, var(--accent-blue), #0040C8);
            border: none;
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-table-cta:hover {
            background: linear-gradient(135deg, #0A62FF, var(--accent-blue));
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.5);
            color: white;
        }
        /* Trust/guarantee strip */
        .guarantee-strip {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.08), rgba(0, 240, 255, 0.05));
            border-top: 1px solid var(--border-neon);
            border-bottom: 1px solid var(--border-neon);
            padding: 36px 0;
        }
        .guarantee-items {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .guarantee-item i {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 12px;
        }
        .guarantee-item .guarantee-text {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
        }
        .guarantee-item .guarantee-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* Info list section */
        .info-section {
            background: var(--bg-primary);
        }
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 24px;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            transition: all var(--transition-fast);
        }
        .info-item:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card);
        }
        .info-item .info-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .info-item h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-white);
        }
        .info-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        /* Time-limited entry */
        .limited-entry {
            background: url('/assets/images/backpic/back-3.jpg') center center / cover no-repeat;
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            isolation: isolate;
            border: 1px solid rgba(255, 215, 0, 0.3);
        }
        .limited-entry::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.85) 0%, rgba(13, 17, 30, 0.7) 100%);
            z-index: -1;
        }
        .limited-entry .limited-badge {
            display: inline-block;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            color: white;
            font-size: 0.8rem;
            font-weight: 800;
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 20px;
            animation: pulse-badge 1.8s infinite;
        }
        .limited-entry h3 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .limited-entry p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 550px;
            margin-bottom: 28px;
        }
        .btn-limited {
            background: linear-gradient(135deg, #FF4500, #FF0000);
            border: none;
            color: white;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(255, 69, 0, 0.45);
            transition: all var(--transition-smooth);
        }
        .btn-limited:hover {
            background: linear-gradient(135deg, #FF6A33, #FF4500);
            box-shadow: 0 12px 32px rgba(255, 69, 0, 0.6);
            transform: translateY(-2px);
            color: white;
        }
        /* CMS list */
        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cms-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 18px 22px;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            transition: all var(--transition-fast);
        }
        .cms-item:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .cms-item .cms-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            flex: 1;
        }
        .cms-item .cms-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .cms-item .cms-arrow {
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .cms-item:hover .cms-arrow {
            transform: translateX(4px);
        }
        .no-updates {
            padding: 32px;
            text-align: center;
            color: var(--text-muted);
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-soft);
        }
        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-soft);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 400px;
            line-height: 1.7;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 24px;
        }
        .footer-bottom .footer-links a {
            color: var(--text-muted);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent-cyan);
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan)) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            animation: fab-breathe 3s infinite ease-in-out;
            transition: all var(--transition-smooth);
            opacity: 0.6;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }
        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 0 20px rgba(0, 240, 255, 0.3); }
            50% { box-shadow: 0 0 32px rgba(0, 240, 255, 0.6); }
        }
        .fab-left .fab-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: #FF4500;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blink-dot 1.5s infinite;
        }
        @keyframes blink-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-section {
                min-height: 520px;
                background-attachment: scroll;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-soft);
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-auth {
                gap: 8px;
            }
            .btn-outline-login {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .btn-solid-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                display: flex;
            }
            .brand-logo {
                font-size: 1.1rem;
            }
            .brand-logo span {
                max-width: 180px;
            }
            .hero-section {
                padding: 48px 0;
                min-height: auto;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat .stat-number {
                font-size: 1.5rem;
            }
            .promo-ladder {
                padding: 28px 20px;
            }
            .ladder-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .ladder-bonus {
                margin-left: 0;
                text-align: left;
            }
            .guarantee-items {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .limited-entry {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-left {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .btn-primary-cta,
            .btn-secondary-cta,
            .btn-limited {
                width: 100%;
                text-align: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .info-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .cms-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cms-item .cms-meta {
                white-space: normal;
            }
            .package-table th,
            .package-table td {
                padding: 14px 16px;
                font-size: 0.85rem;
            }
            .nav-auth .btn-outline-login span,
            .nav-auth .btn-solid-signup span {
                display: none;
            }
            .btn-outline-login,
            .btn-solid-signup {
                padding: 8px 12px;
            }
            .btn-outline-login::before {
                content: '\f007';
                font-family: 'Font Awesome 6 Free';
                font-weight: 900;
            }
            .btn-solid-signup::before {
                content: '\f234';
                font-family: 'Font Awesome 6 Free';
                font-weight: 900;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111624;
            --bg-elevated: #161C2E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hot: #FF007F;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8A94A6;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.25);
            --font-body: 'Be Vietnam Pro', sans-serif;
            --font-display: 'Playfair Display', serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            text-decoration: none;
            color: var(--text-primary);
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: var(--text-primary);
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            flex-shrink: 0;
        }

        .brand-logo span {
            font-family: var(--font-body);
            font-weight: 800;
            font-size: 1.05rem;
            line-height: 1.2;
            letter-spacing: -0.01em;
            background: linear-gradient(135deg, #FFFFFF, #CBD5E1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 8px;
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

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

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

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

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .btn-outline-login,
        .btn-solid-signup {
            padding: 0.5rem 1.15rem;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-outline-login {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-outline-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-solid-signup {
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .btn-solid-signup:hover {
            background: linear-gradient(135deg, #0066FF, var(--accent-cyan));
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.45);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-fast);
        }

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

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            position: relative;
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 30% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 55%);
            border-bottom: 1px solid var(--border-soft);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .article-breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }

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

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .article-category-badge i {
            font-size: 0.75rem;
        }

        .article-hero h1 {
            font-family: var(--font-body);
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            max-width: 850px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-meta i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        /* ========== ARTICLE BODY LAYOUT ========== */
        .article-body-section {
            padding: var(--spacing-xl) 0;
        }

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

        .article-main {
            min-width: 0;
        }

        .article-featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: var(--spacing-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-featured-image:hover img {
            transform: scale(1.02);
        }

        .article-content {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 2rem 0 1rem;
            letter-spacing: -0.01em;
            position: relative;
            padding-left: 1rem;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.3rem;
            bottom: 0.3rem;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 1.5rem 0 0.75rem;
        }

        .article-content p {
            margin-bottom: 1rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 0.75rem 0 1.25rem;
            padding-left: 1.5rem;
        }

        .article-content li {
            margin-bottom: 0.5rem;
        }

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

        .article-content blockquote {
            border-left: 4px solid var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
            color: var(--text-secondary);
            position: relative;
        }

        .article-content blockquote::before {
            content: '\201C';
            position: absolute;
            top: -0.5rem;
            left: 1rem;
            font-size: 3rem;
            color: var(--accent-cyan);
            opacity: 0.4;
            font-family: var(--font-display);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            border: 1px solid var(--border-soft);
        }

        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) 0;
            color: var(--text-secondary);
        }

        .article-not-found h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .article-not-found p {
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .sidebar-cta {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            text-align: center;
        }

        .sidebar-cta h4 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .sidebar-cta p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
        }

        .btn-sidebar-cta {
            display: block;
            width: 100%;
            padding: 0.75rem 1.5rem;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 8px;
            transition: all var(--transition-fast);
            text-align: center;
        }

        .btn-sidebar-cta:hover {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-hot));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.35);
        }

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

        .sidebar-list li {
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-soft);
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            transition: color var(--transition-fast);
        }

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

        .sidebar-list li i {
            color: var(--accent-cyan);
            font-size: 0.75rem;
            margin-top: 0.2rem;
        }

        .sidebar-list li:hover {
            color: var(--text-primary);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12), rgba(0, 240, 255, 0.05));
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            flex: 1;
            min-width: 280px;
        }

        .cta-content h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 0;
            max-width: 500px;
        }

        .cta-actions {
            display: flex;
            gap: 0.75rem;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .btn-cta-primary,
        .btn-cta-secondary {
            padding: 0.75rem 1.75rem;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .btn-cta-primary:hover {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-hot));
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .btn-cta-secondary:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        /* ========== FAB ========== */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1080;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.75), rgba(8, 9, 15, 0.75)), linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            color: #fff;
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            opacity: 0.6;
            animation: fabBreathe 3s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% { opacity: 0.6; box-shadow: 0 0 20px rgba(0, 240, 255, 0.25); }
            50% { opacity: 0.85; box-shadow: 0 0 35px rgba(0, 240, 255, 0.5); }
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.65);
            animation-play-state: paused;
        }

        .fab-support:active {
            transform: scale(0.95);
            border-color: var(--accent-hot);
        }

        .fab-support .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-hot);
            border: 2px solid var(--bg-primary);
            animation: notificationPulse 1.8s ease-in-out infinite;
        }

        @keyframes notificationPulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(255, 0, 127, 0.5); }
            50% { box-shadow: 0 0 0 6px rgba(255, 0, 127, 0); }
        }

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

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

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-top: 1rem;
            max-width: 420px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

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

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

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

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-soft);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-links {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card,
            .sidebar-cta {
                flex: 1;
                min-width: 250px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .nav-container {
                height: 64px;
            }
            .brand-logo span {
                font-size: 0.85rem;
                max-width: 180px;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 1rem;
                gap: 0.5rem;
                border-bottom: 1px solid var(--border-soft);
                transform: translateY(-110%);
                transition: transform var(--transition-smooth);
                z-index: 1040;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links li a {
                padding: 0.75rem 1rem;
                font-size: 0.95rem;
                border-radius: 8px;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .btn-outline-login,
            .btn-solid-signup {
                padding: 0.45rem 0.85rem;
                font-size: 0.78rem;
            }
            .article-hero {
                padding: var(--spacing-lg) 0;
            }
            .article-hero h1 {
                font-size: clamp(1.4rem, 5vw, 2rem);
            }
            .article-body-section {
                padding: var(--spacing-lg) 0;
            }
            .article-content {
                font-size: 1rem;
            }
            .article-content h2 {
                font-size: 1.35rem;
            }
            .cta-card {
                padding: 1.5rem;
                flex-direction: column;
                text-align: center;
            }
            .cta-content p {
                max-width: 100%;
            }
            .cta-actions {
                justify-content: center;
                width: 100%;
            }
            .btn-cta-primary,
            .btn-cta-secondary {
                flex: 1;
                text-align: center;
                min-width: 140px;
            }
            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                left: 0.75rem;
                bottom: 5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .brand-logo span {
                font-size: 0.75rem;
                max-width: 130px;
                line-height: 1.3;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .nav-auth {
                gap: 0.35rem;
            }
            .btn-outline-login span,
            .btn-solid-signup span {
                font-size: 0.7rem;
            }
            .btn-outline-login,
            .btn-solid-signup {
                padding: 0.4rem 0.7rem;
            }
            .article-hero h1 {
                font-size: 1.3rem;
                line-height: 1.35;
            }
            .article-meta {
                font-size: 0.75rem;
                gap: 0.6rem;
            }
            .article-content h2 {
                font-size: 1.2rem;
                padding-left: 0.75rem;
            }
            .article-content h2::before {
                width: 3px;
            }
            .sidebar-card,
            .sidebar-cta {
                min-width: 100%;
            }
            .cta-content h2 {
                font-size: 1.2rem;
            }
            .btn-cta-primary,
            .btn-cta-secondary {
                font-size: 0.85rem;
                padding: 0.65rem 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: #121D33;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6C7A8A;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-dark: #1E2D42;
            --shadow-neon: 0 0 25px rgba(0, 240, 255, 0.15);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.2);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --space-1: 0.5rem;
            --space-2: 1rem;
            --space-3: 1.5rem;
            --space-4: 2rem;
            --space-5: 3rem;
            --space-6: 4rem;
            --space-7: 5rem;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', 'Be Vietnam Pro', sans-serif;
            background: linear-gradient(160deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-white);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container-custom {
            width: min(1200px, 92%);
            margin: 0 auto;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.65rem 0;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            box-shadow: 0 4px 24px rgba(0,0,0,0.4);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: -0.01em;
            transition: var(--transition);
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--accent-cyan);
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, rgba(0,240,255,0.2), rgba(204,255,0,0.1));
            border: 1px solid rgba(0,240,255,0.4);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text-silver);
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.92rem;
            position: relative;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0,240,255,0.6);
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .btn-outline-login {
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            background: transparent;
            white-space: nowrap;
        }
        .btn-outline-login:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }
        .btn-solid-signup {
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            background: var(--accent-cyan);
            color: #0B1A30;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid var(--accent-cyan);
        }
        .btn-solid-signup:hover {
            background: var(--accent-lime);
            border-color: var(--accent-lime);
            color: #0B1A30;
            box-shadow: 0 0 20px rgba(204,255,0,0.4);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(0, 240, 255, 0.3);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(0, 240, 255, 0.2);
        }

        /* ========== PAGE HERO (Category) ========== */
        .page-hero {
            padding: 7.5rem 0 3.5rem;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(0,240,255,0.06) 0%, rgba(204,255,0,0.03) 100%);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0,240,255,0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(204,255,0,0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 3.5rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-copy {
            text-align: left;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            border: 1px solid rgba(0, 240, 255, 0.3);
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }
        .hero-copy h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
            color: var(--text-white);
        }
        .hero-copy h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-copy .lead {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 1.8rem;
            max-width: 550px;
        }
        .hero-kpi-row {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1.8rem;
        }
        .hero-kpi {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .hero-kpi .kpi-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
        }
        .hero-kpi .kpi-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .btn-primary-neon {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent-cyan);
            color: #0B1A30;
            font-weight: 700;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        .btn-primary-neon:hover {
            background: var(--accent-lime);
            border-color: var(--accent-lime);
            color: #0B1A30;
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
        }
        .hero-image-wrapper {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
            border: 1px solid rgba(0, 240, 255, 0.2);
            transform: rotate(1.5deg);
            transition: var(--transition);
        }
        .hero-image-wrapper:hover {
            transform: rotate(0deg) scale(1.01);
            box-shadow: 0 25px 60px rgba(0, 240, 255, 0.2);
        }
        .hero-image-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: var(--radius-xl);
        }
        .hero-image-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0,240,255,0.15), rgba(11,26,48,0.3));
            pointer-events: none;
            border-radius: var(--radius-xl);
        }

        /* ========== SECTION GENERAL ========== */
        .section-block {
            padding: 4.5rem 0;
        }
        .section-block.alt-bg {
            background: rgba(255,255,255,0.02);
            border-top: 1px solid rgba(255,255,255,0.05);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .section-header {
            text-align: left;
            margin-bottom: 2.8rem;
        }
        .section-header .eyebrow {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.6rem;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 0.8rem;
        }
        .section-header p {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 650px;
            line-height: 1.7;
        }

        /* ========== TECHNIQUE CARDS ========== */
        .technique-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.8rem;
        }
        .tech-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem;
            border: 1px solid var(--border-dark);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .tech-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: var(--transition);
        }
        .tech-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }
        .tech-card:hover::before {
            opacity: 1;
        }
        .tech-card .tech-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .tech-card:hover .tech-icon {
            background: rgba(0, 240, 255, 0.2);
            box-shadow: var(--shadow-neon);
        }
        .tech-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-white);
        }
        .tech-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .tech-card .tech-tag {
            display: inline-block;
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-top: 1rem;
            border: 1px solid rgba(204, 255, 0, 0.2);
        }

        /* ========== STEPS FLOW ========== */
        .steps-vertical {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            max-width: 800px;
        }
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            padding: 1.5rem 1.8rem;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-cyan);
            transition: var(--transition);
        }
        .step-item:hover {
            background: rgba(0, 240, 255, 0.05);
            border-left-color: var(--accent-lime);
            transform: translateX(6px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: linear-gradient(135deg, var(--accent-cyan), #0099cc);
            color: #0B1A30;
            font-weight: 800;
            font-size: 1.2rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-neon);
        }
        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-white);
        }
        .step-content p {
            color: var(--text-silver);
            font-size: 0.93rem;
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* ========== TABLE INSIGHT ========== */
        .insight-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-dark);
        }
        .insight-table thead {
            background: rgba(0, 240, 255, 0.08);
        }
        .insight-table th {
            padding: 1rem 1.4rem;
            text-align: left;
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            border-bottom: 2px solid rgba(0, 240, 255, 0.2);
        }
        .insight-table td {
            padding: 1rem 1.4rem;
            color: var(--text-silver);
            font-size: 0.92rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .insight-table tbody tr:hover {
            background: rgba(0, 240, 255, 0.04);
        }
        .insight-table tbody tr:last-child td {
            border-bottom: none;
        }
        .badge-win {
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            border: 1px solid rgba(204,255,0,0.3);
        }
        .badge-risk {
            background: rgba(255, 100, 100, 0.15);
            color: #FF6B6B;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            border: 1px solid rgba(255,100,100,0.3);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 850px;
            margin: 0;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding: 1.5rem 0;
            transition: var(--transition);
        }
        .faq-item:first-child {
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            text-align: left;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            padding: 0;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .faq-icon {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent-lime);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-top: 0.8rem;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.06));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            position: relative;
            overflow: hidden;
            text-align: left;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,240,255,0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            letter-spacing: -0.01em;
        }
        .cta-banner p {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 550px;
            margin-bottom: 1.8rem;
            line-height: 1.7;
        }
        .cta-banner .btn-primary-neon {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 13, 24, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 4rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-top: 1rem;
            max-width: 400px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.01em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col ul a {
            color: var(--text-silver);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent-cyan);
            padding-left: 5px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.06);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-links {
            display: flex;
            gap: 1.5rem;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 1.2rem;
            bottom: 5.5rem;
            z-index: 1040;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            transition: var(--transition);
            animation: fab-breathe 2.8s ease-in-out infinite;
            text-decoration: none;
        }
        .fab-left:hover {
            transform: scale(1.12);
            color: var(--accent-lime);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
        }
        .fab-left:active {
            transform: scale(0.95);
        }
        .fab-left .fab-dot {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0B1A30;
            animation: dot-blink 1.6s ease-in-out infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 0 15px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.65); }
        }
        @keyframes dot-blink {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.3); }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .hero-image-wrapper {
                transform: rotate(0);
                max-width: 600px;
            }
            .hero-image-wrapper img {
                height: 320px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .technique-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 1.5rem;
                gap: 0.6rem;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                transform: translateY(-150%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 1045;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                width: 100%;
                padding: 0.8rem 1rem;
                font-size: 1rem;
            }
            .mobile-toggle {
                display: flex;
            }
            .btn-outline-login,
            .btn-solid-signup {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }
            .page-hero {
                padding: 6.5rem 0 2.5rem;
            }
            .hero-image-wrapper img {
                height: 250px;
            }
            .section-block {
                padding: 3rem 0;
            }
            .technique-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.8rem;
            }
            .cta-banner {
                padding: 2.5rem 1.8rem;
            }
            .insight-table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
            .hero-kpi-row {
                gap: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .brand-logo {
                font-size: 0.9rem;
                gap: 0.5rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .nav-auth .btn-outline-login {
                display: none;
            }
            .hero-copy h1 {
                font-size: 1.9rem;
            }
            .hero-image-wrapper img {
                height: 200px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
                padding: 1.2rem;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                left: 0.8rem;
                bottom: 5rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-dark: #0A0F0D;
            --bg-panel: #111816;
            --bg-card: #16211C;
            --accent-green: #1F8A5C;
            --accent-green-hover: #27A56D;
            --accent-gold: #E8B84B;
            --accent-gold-hover: #F5C96A;
            --text-primary: #F2F5F3;
            --text-secondary: #B7C1BC;
            --text-muted: #7E8A84;
            --border-soft: rgba(232,184,75,0.22);
            --border-gold: rgba(232,184,75,0.55);
            --shadow-gold: 0 12px 32px rgba(0,0,0,0.45);
            --shadow-hover: 0 16px 38px rgba(0,0,0,0.55);
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --font-display: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

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

        .container-custom {
            width: min(1180px, 92%);
            margin: 0 auto;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(10,15,13,0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 14px 0;
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 10px 30px rgba(0,0,0,0.35);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--accent-gold);
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(145deg, var(--accent-green), #124F35);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.3rem;
            box-shadow: 0 6px 14px rgba(0,0,0,0.4);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 28px;
            margin: 0;
            align-items: center;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color 0.2s;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0%;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.25s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-outline-login,
        .btn-solid-signup {
            border-radius: 28px;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            cursor: pointer;
            transition: all 0.25s ease;
            border: none;
            white-space: nowrap;
        }
        .btn-outline-login {
            background: transparent;
            border: 1.5px solid var(--border-gold);
            color: var(--accent-gold);
        }
        .btn-outline-login:hover {
            background: rgba(232,184,75,0.1);
            border-color: var(--accent-gold);
        }
        .btn-solid-signup {
            background: var(--accent-gold);
            color: #0A0F0D;
        }
        .btn-solid-signup:hover {
            background: var(--accent-gold-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(232,184,75,0.3);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-soft);
            border-radius: 10px;
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 6px 12px;
            cursor: pointer;
        }

        /* Hero Section */
        .category-hero {
            padding: 70px 0 60px;
            background: radial-gradient(circle at 20% 20%, rgba(31,138,92,0.12), transparent 50%),
                        radial-gradient(circle at 80% 80%, rgba(232,184,75,0.06), transparent 50%),
                        var(--bg-dark);
            border-bottom: 1px solid var(--border-soft);
        }
        .hero-content {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1 1 480px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(31,138,92,0.25);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 8px 18px;
            border-radius: 30px;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-title {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 18px;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .hero-search {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: 48px;
            padding: 6px 6px 6px 22px;
            display: flex;
            align-items: center;
            max-width: 540px;
            box-shadow: var(--shadow-gold);
        }
        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-size: 1rem;
            padding: 10px 0;
        }
        .hero-search input::placeholder {
            color: var(--text-muted);
        }
        .hero-search button {
            background: var(--accent-green);
            border: none;
            border-radius: 40px;
            color: #fff;
            font-weight: 700;
            padding: 12px 24px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hero-search button:hover {
            background: var(--accent-green-hover);
        }
        .hero-visual {
            flex: 1 1 360px;
            min-height: 320px;
            border-radius: var(--radius-xl);
            background: url('/assets/images/coverpic/cover-3.jpg') center/cover no-repeat;
            box-shadow: var(--shadow-gold);
            border: 1px solid var(--border-soft);
            position: relative;
            overflow: hidden;
        }
        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(10,15,13,0.1) 0%, rgba(10,15,13,0.55) 100%);
            border-radius: var(--radius-xl);
        }
        .hero-visual .visual-caption {
            position: absolute;
            bottom: 24px;
            left: 24px;
            right: 24px;
            z-index: 2;
            background: rgba(10,15,13,0.75);
            backdrop-filter: blur(8px);
            padding: 16px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-soft);
            color: var(--text-primary);
            font-weight: 600;
        }

        /* Stats Strip */
        .stats-strip {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            padding: 18px 0;
        }
        .stats-list {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: left;
            flex: 1 1 140px;
        }
        .stat-number {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* Main Content */
        .main-content {
            padding: 70px 0;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            margin-bottom: 34px;
        }
        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--text-primary);
            max-width: 700px;
        }
        .section-desc {
            color: var(--text-secondary);
            max-width: 520px;
            line-height: 1.6;
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 26px;
            margin-bottom: 50px;
        }
        .tech-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .tech-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-gold);
        }
        .tech-card .card-icon {
            width: 52px;
            height: 52px;
            background: rgba(31,138,92,0.2);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.6rem;
            margin-bottom: 18px;
        }
        .tech-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .tech-card p {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .step-block {
            background: var(--bg-panel);
            border-radius: var(--radius-xl);
            padding: 46px 40px;
            margin-bottom: 50px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-gold);
        }
        .step-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 24px;
        }
        .step-list li {
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .step-number {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            background: var(--accent-green);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .step-text h4 {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 4px;
        }
        .step-text p {
            color: var(--text-secondary);
            margin: 0;
        }

        .faq-section {
            margin-bottom: 50px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.05rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: rgba(31,138,92,0.08);
        }
        .faq-question i {
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(145deg, var(--bg-panel), #0D1512);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 52px 40px;
            text-align: left;
            box-shadow: var(--shadow-gold);
            margin-bottom: 30px;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 26px;
        }
        .btn-gold {
            background: var(--accent-gold);
            color: #0A0F0D;
            border: none;
            border-radius: 40px;
            font-weight: 800;
            padding: 14px 32px;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-gold:hover {
            background: var(--accent-gold-hover);
            transform: translateY(-3px);
            box-shadow: 0 14px 28px rgba(232,184,75,0.35);
        }

        /* Footer */
        .site-footer {
            background: #080C0A;
            border-top: 1px solid var(--border-soft);
            padding: 60px 0 24px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-muted);
            max-width: 460px;
            margin-top: 14px;
            line-height: 1.6;
        }
        .footer-col h5 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-links {
            display: flex;
            gap: 22px;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 90px;
            z-index: 1060;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(10,15,13,0.85);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 6px 24px rgba(232,184,75,0.25);
            transition: all 0.3s ease;
            animation: fabFloat 4s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 30px rgba(232,184,75,0.4);
            border-color: #F5C96A;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .fab-left .badge-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid #0A0F0D;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(10,15,13,0.98);
                flex-direction: column;
                padding: 26px 20px;
                gap: 18px;
                border-bottom: 1px solid var(--border-soft);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 1040;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth .btn-outline-login,
            .nav-auth .btn-solid-signup {
                display: none;
            }
            .hero-content {
                flex-direction: column;
            }
            .hero-visual {
                min-height: 240px;
                width: 100%;
            }
            .step-block {
                padding: 30px 20px;
            }
            .cta-section {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .brand-logo span {
                font-size: 0.95rem;
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .stats-list {
                gap: 12px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 70px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #0F0C20;
            --bg-ocean: #0B1A30;
            --bg-card: #151228;
            --bg-elevated: #1D1A38;
            --neon-green: #CCFF00;
            --neon-cyan: #00F0FF;
            --neon-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6C7A8A;
            --border-soft: rgba(204,255,0,0.25);
            --border-cyan: rgba(0,240,255,0.35);
            --shadow-neon: 0 0 15px rgba(0,240,255,0.35);
            --shadow-green: 0 0 18px rgba(204,255,0,0.3);
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --spacing-sm: 12px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family: 'Inter', 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: var(--font-family);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        
        a {
            text-decoration: none;
            color: var(--neon-cyan);
            transition: color 0.25s ease;
        }
        
        a:hover {
            color: var(--neon-green);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, .btn {
            font-family: var(--font-family);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        /* Header & Navigation */
        .site-header {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(204,255,0,0.18);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 8px 24px rgba(0,0,0,0.35);
        }
        
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: color 0.3s ease;
        }
        
        .brand-logo:hover {
            color: var(--neon-green);
        }
        
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--bg-deep);
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(204,255,0,0.4);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 2px;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap;
        }
        
        .nav-links a:hover {
            color: var(--neon-cyan);
        }
        
        .nav-links a.active {
            color: var(--neon-green);
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--neon-green);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--neon-green);
        }
        
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-outline-login, .btn-solid-signup {
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        
        .btn-outline-login {
            background: transparent;
            color: var(--neon-cyan);
            border: 1px solid var(--neon-cyan);
        }
        
        .btn-outline-login:hover {
            background: rgba(0,240,255,0.1);
            box-shadow: 0 0 14px rgba(0,240,255,0.25);
            color: var(--neon-cyan);
            transform: translateY(-1px);
        }
        
        .btn-solid-signup {
            background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
            color: var(--bg-deep);
            box-shadow: 0 4px 16px rgba(204,255,0,0.35);
        }
        
        .btn-solid-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204,255,0,0.5);
            color: var(--bg-deep);
        }
        
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }
        
        /* Hero Section */
        .hero-section {
            background: linear-gradient(160deg, rgba(15,12,32,0.95) 30%, rgba(11,26,48,0.98) 70%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(0,240,255,0.15);
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0,240,255,0.12), transparent 65%);
            pointer-events: none;
        }
        
        .hero-creator {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        
        .creator-avatar {
            width: 96px;
            height: 96px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.8rem;
            color: var(--bg-deep);
            flex-shrink: 0;
            box-shadow: 0 0 30px rgba(204,255,0,0.5);
            border: 3px solid rgba(255,255,255,0.3);
        }
        
        .creator-info h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            line-height: 1.2;
            color: var(--text-primary);
        }
        
        .creator-info .sub-text {
            color: var(--neon-cyan);
            font-weight: 500;
            font-size: 1.1rem;
        }
        
        .creator-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 18px;
        }
        
        .badge-stat {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 24px;
            padding: 10px 18px;
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .badge-stat i {
            color: var(--neon-green);
        }
        
        .follow-btn {
            margin-top: 22px;
            background: linear-gradient(135deg, var(--neon-pink), #FF4500);
            color: white;
            border: none;
            border-radius: 30px;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            box-shadow: 0 6px 20px rgba(255,0,127,0.35);
            transition: all 0.3s ease;
        }
        
        .follow-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(255,0,127,0.5);
        }
        
        .hero-summary {
            margin-top: 32px;
            padding: 20px 24px;
            background: rgba(0,0,0,0.3);
            border-left: 4px solid var(--neon-green);
            border-radius: 0 16px 16px 0;
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 800px;
        }
        
        /* Section Base */
        .section-block {
            padding: var(--spacing-xl) 0;
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: var(--text-primary);
            line-height: 1.3;
        }
        
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 36px;
        }
        
        /* Feature List */
        .feature-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            align-items: flex-start;
        }
        
        .feature-item:last-child {
            border-bottom: none;
        }
        
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0,240,255,0.1);
            border: 1px solid var(--border-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--neon-cyan);
            flex-shrink: 0;
        }
        
        .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        
        .feature-content p {
            color: var(--text-secondary);
            margin: 0;
            font-size: 0.95rem;
        }
        
        /* App Showcase */
        .app-showcase {
            background: linear-gradient(180deg, rgba(29,26,56,0.6), rgba(15,12,32,0.9));
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(204,255,0,0.2);
            position: relative;
            overflow: hidden;
        }
        
        .app-showcase img {
            border-radius: var(--radius-md);
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
        }
        
        /* Steps */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .step-list li {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px dashed rgba(255,255,255,0.1);
            align-items: flex-start;
        }
        
        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
            color: var(--bg-deep);
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        
        .step-list h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        
        .step-list p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
        }
        
        /* FAQ */
        .accordion-custom .accordion-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
        }
        
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
        }
        
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(204,255,0,0.08);
            color: var(--neon-green);
        }
        
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(204,255,0,0.25);
        }
        
        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            padding: 16px 20px 20px;
        }
        
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(204,255,0,0.12), rgba(0,240,255,0.08));
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(204,255,0,0.3);
            text-align: left;
        }
        
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 24px;
        }
        
        /* Footer */
        .site-footer {
            background: rgba(10, 8, 22, 0.95);
            border-top: 1px solid rgba(204,255,0,0.2);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 16px;
            max-width: 380px;
        }
        
        .footer-col h5 {
            color: var(--neon-green);
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 16px;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 10px;
        }
        
        .footer-col ul a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }
        
        .footer-col ul a:hover {
            color: var(--neon-cyan);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .footer-links {
            display: flex;
            gap: 20px;
        }
        
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .footer-links a:hover {
            color: var(--neon-green);
        }
        
        /* FAB */
        .fab-neon {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0,0,0,0.65);
            backdrop-filter: blur(12px);
            border: 2px solid var(--neon-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 15px rgba(0,240,255,0.5);
            transition: all 0.35s ease;
            opacity: 0.65;
            animation: fabBreath 3s infinite ease-in-out;
        }
        
        .fab-neon:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0,240,255,0.8);
            color: var(--neon-green);
            border-color: var(--neon-green);
        }
        
        @keyframes fabBreath {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 0.9; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .creator-info h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15,12,32,0.98);
                flex-direction: column;
                padding: 24px;
                gap: 18px;
                border-bottom: 1px solid rgba(204,255,0,0.25);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth {
                gap: 8px;
            }
            .btn-outline-login, .btn-solid-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .brand-logo span {
                font-size: 0.85rem;
            }
            .hero-creator {
                flex-direction: column;
                align-items: flex-start;
            }
            .creator-info h1 {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .btn-outline-login, .btn-solid-signup {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .creator-avatar {
                width: 72px;
                height: 72px;
                font-size: 2rem;
            }
            .creator-info h1 {
                font-size: 1.4rem;
            }
            .hero-summary {
                padding: 16px;
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .fab-neon {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }