/* roulang page: index */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent: #FFD700;
            --accent-warm: #FF9F00;
            --text: #FFFDF9;
            --text-soft: #FEF08A;
            --bg: #4A0007;
            --bg-light: #6B1015;
            --border: rgba(255, 215, 0, 0.35);
            --card-bg: rgba(139, 0, 0, 0.6);
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
            --radius: 16px;
            --radius-sm: 8px;
            --spacing: 2rem;
            --font: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .25s;
        }
        a:hover {
            color: var(--accent-warm);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            width: min(1200px, 92%);
            margin: 0 auto;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(74, 0, 7, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
            gap: 1.5rem;
        }
        .logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: var(--accent);
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--accent-warm);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.8rem;
        }
        .main-nav a {
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .btn-login {
            background: transparent;
            border: none;
            color: var(--text);
            font-weight: 700;
            cursor: pointer;
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-sm);
            transition: color .25s;
        }
        .btn-login:hover {
            color: var(--accent);
        }
        .btn-signup {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            font-weight: 800;
            padding: 0.6rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.4);
            transition: all .3s;
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: var(--accent-warm);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.6);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 2px solid var(--accent);
            color: var(--accent);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.5rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        /* Hero */
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 55%, #2a0004 100%);
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.18);
            border: 1px solid var(--accent);
            color: var(--accent);
            font-weight: 700;
            font-size: 0.8rem;
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            margin-bottom: 1.2rem;
            letter-spacing: 0.04em;
        }
        .hero h1 {
            font-size: clamp(2.1rem, 5vw, 3.4rem);
            font-weight: 900;
            line-height: 1.15;
            color: var(--text);
            margin-bottom: 1.4rem;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 1.1rem;
            color: rgba(255, 253, 249, 0.88);
            max-width: 560px;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            padding: 0.85rem 2rem;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.45);
            transition: all .3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: var(--accent-warm);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.6);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
            font-weight: 700;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all .3s;
        }
        .btn-outline:hover {
            background: rgba(255, 215, 0, 0.15);
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat strong {
            font-size: 1.8rem;
            color: var(--accent);
            font-weight: 900;
        }
        .hero-stat span {
            font-size: 0.85rem;
            color: var(--text-soft);
        }
        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            align-items: center;
        }
        .hero-visual img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 2px solid var(--border);
            max-height: 360px;
            width: 100%;
            object-fit: cover;
        }
        .hero-badges-row {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .hero-badges-row span {
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent);
            padding: 0.45rem 1.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            border: 1px solid var(--border);
        }
        /* Section base */
        .section {
            padding: 4rem 0;
        }
        .section-alt {
            background: rgba(107, 16, 21, 0.45);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            margin-bottom: 2.5rem;
        }
        .section-tag {
            display: inline-block;
            background: rgba(255, 215, 0, 0.18);
            color: var(--accent);
            font-weight: 700;
            font-size: 0.75rem;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 0.8rem;
        }
        .section-head h2 {
            font-size: clamp(1.7rem, 3.5vw, 2.5rem);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 0.9rem;
            line-height: 1.2;
        }
        .section-head p {
            color: rgba(255, 253, 249, 0.82);
            max-width: 680px;
            font-size: 1rem;
        }
        /* Product showcase */
        .product-stage {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        .product-stage img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 2px solid var(--border);
        }
        .product-details {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .product-feature {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }
        .product-feature .icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
        }
        .product-feature h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.3rem;
        }
        .product-feature p {
            font-size: 0.95rem;
            color: rgba(255, 253, 249, 0.78);
        }
        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            transition: all .3s;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(255, 215, 0, 0.2);
        }
        .step-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent);
            margin-bottom: 0.8rem;
            line-height: 1;
        }
        .step-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.7rem;
            color: var(--text);
        }
        .step-card p {
            font-size: 0.95rem;
            color: rgba(255, 253, 249, 0.78);
        }
        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.8rem;
            transition: all .3s;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .review-stars {
            color: var(--accent);
            font-size: 1.1rem;
            margin-bottom: 0.9rem;
            letter-spacing: 0.2em;
        }
        .review-text {
            font-size: 0.95rem;
            color: rgba(255, 253, 249, 0.85);
            margin-bottom: 1.1rem;
            font-style: italic;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .review-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .review-author strong {
            display: block;
            color: var(--text);
            font-size: 0.95rem;
        }
        .review-author span {
            font-size: 0.8rem;
            color: var(--text-soft);
        }
        /* News/Info */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 0.8fr;
            gap: 2.5rem;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .news-item {
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
            padding: 1.2rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all .3s;
        }
        .news-item:hover {
            background: rgba(139, 0, 0, 0.8);
            transform: translateX(4px);
        }
        .news-date {
            flex-shrink: 0;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 0.8rem;
            padding: 0.35rem 0.9rem;
            border-radius: 50px;
            white-space: nowrap;
        }
        .news-content h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.3rem;
        }
        .news-content p {
            font-size: 0.88rem;
            color: rgba(255, 253, 249, 0.72);
        }
        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.8rem;
        }
        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 1.2rem;
        }
        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .news-sidebar li a {
            color: var(--text);
            font-size: 0.9rem;
            font-weight: 600;
            display: block;
            padding: 0.4rem 0;
            border-bottom: 1px dashed var(--border);
        }
        .news-sidebar li a:hover {
            color: var(--accent);
        }
        /* CTA Download */
        .cta-download {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-warm) 100%);
            color: var(--primary-dark);
            border-radius: var(--radius);
            padding: 3rem;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 2rem;
            align-items: center;
        }
        .cta-download h2 {
            font-size: 1.8rem;
            font-weight: 900;
            margin-bottom: 0.6rem;
        }
        .cta-download p {
            font-weight: 600;
            font-size: 1rem;
        }
        .btn-dark {
            background: var(--primary-dark);
            color: var(--accent);
            border: none;
            font-weight: 800;
            padding: 1rem 2.2rem;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1rem;
            transition: all .3s;
            white-space: nowrap;
        }
        .btn-dark:hover {
            background: #2a0004;
            transform: scale(1.05);
        }
        /* Social proof */
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .proof-item {
            text-align: center;
            padding: 1.5rem;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .proof-item strong {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent);
            display: block;
            margin-bottom: 0.3rem;
        }
        .proof-item span {
            font-size: 0.9rem;
            color: var(--text-soft);
        }
        /* Lead form */
        .lead-form {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2.5rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
        }
        .lead-form-info h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            color: var(--text);
        }
        .lead-form-info p {
            color: rgba(255, 253, 249, 0.8);
            margin-bottom: 1.2rem;
        }
        .privacy-note {
            font-size: 0.8rem;
            color: var(--text-soft);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .lead-form form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .lead-form input {
            background: rgba(255, 253, 249, 0.1);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.85rem 1.2rem;
            color: var(--text);
            font-size: 0.95rem;
            outline: none;
            transition: border .3s;
        }
        .lead-form input:focus {
            border-color: var(--accent);
        }
        .lead-form input::placeholder {
            color: rgba(255, 253, 249, 0.5);
        }
        /* Reward preview */
        .rewards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .reward-card {
            background: var(--card-bg);
            border: 2px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            text-align: center;
            transition: all .3s;
            position: relative;
        }
        .reward-card:hover {
            border-color: var(--accent);
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(255, 215, 0, 0.3);
        }
        .reward-icon {
            font-size: 2.8rem;
            margin-bottom: 0.8rem;
        }
        .reward-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 0.6rem;
        }
        .reward-card p {
            font-size: 0.9rem;
            color: rgba(255, 253, 249, 0.75);
        }
        .reward-tag {
            position: absolute;
            top: 0.8rem;
            right: 0.8rem;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 800;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
        }
        /* Floating CTA bar */
        .floating-cta {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 90;
            background: rgba(74, 0, 7, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0.7rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
            white-space: nowrap;
        }
        .floating-cta span {
            color: var(--text);
            font-weight: 700;
            font-size: 0.9rem;
        }
        .floating-cta a {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 0.5rem 1.3rem;
            border-radius: 50px;
            font-weight: 800;
            font-size: 0.85rem;
        }
        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 95;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-dark);
            border: 3px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            opacity: 0.7;
            transition: all .3s;
            animation: fab-breathe 3s infinite;
            font-size: 1.6rem;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.55);
        }
        .fab:active {
            transform: scale(0.95) translateY(2px);
        }
        @keyframes fab-breathe {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.04); }
        }
        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #ff1a1a;
            border-radius: 50%;
            border: 2px solid var(--primary-dark);
            animation: blink 1.4s infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.2; }
        }
        /* Footer */
        .site-footer {
            background: #2a0004;
            border-top: 2px solid var(--border);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 253, 249, 0.7);
            margin-top: 0.8rem;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
        }
        .footer-col h4 {
            color: var(--accent);
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-col a {
            color: rgba(255, 253, 249, 0.7);
            font-size: 0.9rem;
            transition: color .25s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.8rem;
            color: rgba(255, 253, 249, 0.6);
        }
        .payment-badges {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .payment-badges span {
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border);
            padding: 0.3rem 0.9rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.75rem;
            color: var(--text-soft);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                order: 2;
            }
            .product-stage {
                grid-template-columns: 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .lead-form {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(74, 0, 7, 0.98);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1.2rem;
                border-bottom: 1px solid var(--border);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .steps-grid,
            .reviews-grid,
            .rewards-grid {
                grid-template-columns: 1fr;
            }
            .proof-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-download {
                grid-template-columns: 1fr;
                padding: 2rem;
            }
            .floating-cta {
                left: 10px;
                right: 10px;
                transform: none;
                border-radius: var(--radius);
                justify-content: space-between;
            }
            .fab {
                left: 12px;
                bottom: 140px;
            }
        }
        @media (max-width: 520px) {
            .hero-stats {
                gap: 1.5rem;
            }
            .hero-stat strong {
                font-size: 1.4rem;
            }
            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.85rem;
            }
            .btn-login {
                padding: 0.5rem 0.8rem;
                font-size: 0.85rem;
            }
            .proof-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .lead-form {
                padding: 1.5rem;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: rgba(209, 242, 235, 0.75);
            --border-gold: rgba(255, 215, 0, 0.35);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.2);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-primary: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
        }
        
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: var(--text-mint);
        }
        
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }
        
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-gold);
            transition: box-shadow var(--transition-base);
        }
        
        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-sm) 0;
            min-height: 72px;
        }
        
        .logo {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            line-height: 1.3;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            max-width: 260px;
        }
        
        .logo:hover {
            opacity: 0.85;
            color: var(--accent-gold);
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        
        .main-nav a {
            display: inline-block;
            padding: 0.5rem 1rem;
            color: var(--text-mint);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 100px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        
        .main-nav a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }
        
        .main-nav a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 700;
        }
        
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }
        
        .btn-login {
            padding: 0.5rem 1.25rem;
            color: var(--text-mint);
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 100px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .btn-login:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }
        
        .btn-signup {
            padding: 0.5rem 1.5rem;
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--primary-bg);
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: 100px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: var(--shadow-gold);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.35);
            color: var(--primary-bg);
        }
        
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--accent-gold);
            margin: 2.5px 0;
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        
        /* Article Hero */
        .article-hero {
            padding-top: 140px;
            padding-bottom: var(--spacing-lg);
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.95) 0%, rgba(18, 62, 37, 0.9) 100%);
            position: relative;
            overflow: hidden;
        }
        
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        
        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 850px;
        }
        
        .article-category-tag {
            display: inline-block;
            padding: 0.4rem 1rem;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 100px;
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-gold);
        }
        
        .article-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
            color: var(--text-white);
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: var(--spacing-sm);
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        
        .article-meta i {
            color: var(--accent-gold);
        }
        
        /* Article Body */
        .article-main {
            padding: var(--spacing-xl) 0;
        }
        
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-xl);
            align-items: start;
        }
        
        .article-content {
            background: rgba(18, 62, 37, 0.5);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            min-height: 400px;
        }
        
        .article-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            line-height: 1.3;
        }
        
        .article-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-mint);
            margin: var(--spacing-md) 0 var(--spacing-xs);
            line-height: 1.35;
        }
        
        .article-content p {
            color: var(--text-mint);
            margin-bottom: var(--spacing-sm);
            line-height: 1.7;
            font-size: 1rem;
        }
        
        .article-content ul,
        .article-content ol {
            margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-mint);
            line-height: 1.7;
        }
        
        .article-content li {
            margin-bottom: 0.5rem;
        }
        
        .article-content strong {
            color: var(--accent-gold);
            font-weight: 700;
        }
        
        .article-content blockquote {
            margin: var(--spacing-md) 0;
            padding: var(--spacing-md) var(--spacing-lg);
            background: rgba(255, 215, 0, 0.06);
            border-left: 4px solid var(--accent-gold);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-mint);
            font-style: italic;
            font-size: 1.1rem;
        }
        
        .article-content img {
            border-radius: var(--radius-md);
            margin: var(--spacing-md) 0;
        }
        
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: var(--spacing-md) 0;
            color: var(--text-mint);
        }
        
        .article-content th,
        .article-content td {
            padding: 0.75rem 1rem;
            text-align: left;
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
        }
        
        .article-content th {
            background: rgba(255, 215, 0, 0.08);
            color: var(--accent-gold);
            font-weight: 700;
        }
        
        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-md);
            color: var(--text-muted);
        }
        
        .article-not-found i {
            font-size: 3rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
        }
        
        .article-not-found h2 {
            font-size: 1.5rem;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }
        
        .btn-back-home {
            display: inline-block;
            margin-top: var(--spacing-md);
            padding: 0.75rem 1.75rem;
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--primary-bg);
            font-weight: 700;
            border-radius: 100px;
            transition: all var(--transition-fast);
        }
        
        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.35);
            color: var(--primary-bg);
        }
        
        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        
        .sidebar-card {
            background: rgba(18, 62, 37, 0.6);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
        }
        
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-mint);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            padding: 0.4rem 0;
        }
        
        .sidebar-card li a:hover {
            color: var(--accent-gold);
            transform: translateX(4px);
        }
        
        .sidebar-card li a i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }
        
        .promo-box {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.12), rgba(211, 47, 47, 0.1));
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
        }
        
        .promo-box h4 {
            color: var(--accent-gold);
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        
        .promo-box p {
            color: var(--text-mint);
            font-size: 0.9rem;
            margin-bottom: var(--spacing-sm);
        }
        
        .btn-cta-sidebar {
            display: inline-block;
            padding: 0.6rem 1.5rem;
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--primary-bg);
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 100px;
            transition: all var(--transition-fast);
        }
        
        .btn-cta-sidebar:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.35);
            color: var(--primary-bg);
        }
        
        /* CTA Section */
        .article-cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
        }
        
        .cta-wrapper {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.08), rgba(211, 47, 47, 0.06));
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        
        .cta-text h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-xs);
        }
        
        .cta-text p {
            color: var(--text-mint);
            font-size: 1rem;
            max-width: 500px;
        }
        
        .btn-cta-large {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--primary-bg);
            font-weight: 800;
            font-size: 1.1rem;
            border-radius: 100px;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: var(--shadow-gold);
        }
        
        .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(255, 215, 0, 0.4);
            color: var(--primary-bg);
        }
        
        /* Footer */
        .site-footer {
            background: #061B0E;
            border-top: 1px solid var(--border-gold);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        
        .footer-brand .logo {
            display: block;
            margin-bottom: var(--spacing-sm);
            font-size: 1.1rem;
        }
        
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        
        .footer-col h4 {
            color: var(--accent-gold);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        
        .footer-col li {
            margin-bottom: 0.5rem;
        }
        
        .footer-col a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        
        .payment-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .payment-badges span {
            padding: 0.4rem 0.9rem;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            border-radius: 100px;
            color: var(--text-mint);
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        
        /* FAB */
        .fab-promo {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #2A1B0A, #0A0A0A);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
            opacity: 0.7;
            text-decoration: none;
        }
        
        .fab-promo:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 8px 35px rgba(255, 215, 0, 0.5);
        }
        
        .fab-promo:active {
            transform: scale(0.95) translateY(2px);
        }
        
        .fab-promo i {
            color: var(--accent-gold);
            font-size: 1.5rem;
            transition: transform var(--transition-base);
        }
        
        .fab-promo:hover i {
            transform: rotate(360deg);
        }
        
        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: fab-blink 1.5s ease-in-out infinite;
        }
        
        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3); }
            50% { box-shadow: 0 4px 35px rgba(255, 215, 0, 0.55); }
        }
        
        @keyframes fab-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }
        
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: var(--spacing-xs);
            }
            
            .logo {
                font-size: 1rem;
                max-width: 200px;
            }
            
            .nav-toggle {
                display: flex;
            }
            
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 46, 28, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-md);
                gap: var(--spacing-xs);
                border-bottom: 1px solid var(--border-gold);
                box-shadow: var(--shadow-lg);
            }
            
            .main-nav.open {
                display: flex;
            }
            
            .main-nav a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                text-align: left;
                border-radius: var(--radius-sm);
            }
            
            .main-nav a.active::after {
                display: none;
            }
            
            .header-actions {
                margin-left: auto;
            }
            
            .btn-login,
            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.85rem;
            }
            
            .article-hero {
                padding-top: 120px;
            }
            
            .article-hero h1 {
                font-size: 1.75rem;
            }
            
            .article-content {
                padding: var(--spacing-md);
            }
            
            .article-content h2 {
                font-size: 1.4rem;
            }
            
            .article-content h3 {
                font-size: 1.15rem;
            }
            
            .cta-wrapper {
                flex-direction: column;
                text-align: center;
                padding: var(--spacing-lg);
            }
            
            .cta-text p {
                margin: 0 auto;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            
            .header-inner {
                min-height: 60px;
            }
            
            .logo {
                font-size: 0.85rem;
                max-width: 150px;
            }
            
            .btn-login {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            
            .article-hero {
                padding-top: 100px;
                padding-bottom: var(--spacing-md);
            }
            
            .article-hero h1 {
                font-size: 1.4rem;
            }
            
            .article-meta {
                font-size: 0.8rem;
                gap: var(--spacing-sm);
            }
            
            .article-content {
                padding: var(--spacing-sm);
                border-radius: var(--radius-md);
            }
            
            .article-content h2 {
                font-size: 1.2rem;
            }
            
            .article-content h3 {
                font-size: 1.05rem;
            }
            
            .article-content p {
                font-size: 0.95rem;
            }
            
            .article-content blockquote {
                padding: var(--spacing-sm) var(--spacing-md);
                font-size: 1rem;
            }
            
            .btn-cta-large {
                padding: 0.8rem 1.8rem;
                font-size: 1rem;
            }
            
            .fab-promo {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }
            
            .fab-promo i {
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #1A1640;
            --bg-card: #1F1A4D;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-glow: rgba(0, 240, 255, 0.3);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.15);
            --shadow-lift: 0 20px 40px rgba(0, 0, 0, 0.4);
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --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;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 20%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(255, 0, 127, 0.02) 0%, transparent 60%);
            pointer-events: none;
            z-index: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 2px;
        }

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-soft);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            line-height: 1.3;
            max-width: 320px;
        }

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

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

        .main-nav a {
            padding: 8px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

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

        .main-nav a.active {
            color: var(--bg-primary);
            background: var(--accent-lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.4);
        }

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

        .btn-login {
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            transition: var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.35);
            color: var(--text-primary);
        }

        .btn-signup {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: var(--accent-cyan);
            border: none;
            border-radius: 50px;
            transition: var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .btn-signup:hover {
            background: var(--accent-lime);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-1px);
            color: var(--bg-primary);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            color: var(--text-primary);
            font-size: 1.2rem;
            padding: 6px 12px;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0;
            gap: 8px;
            border-top: 1px solid var(--border-soft);
            margin-top: 10px;
        }

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

        .mobile-menu a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
        }

        .mobile-menu .auth-buttons {
            padding: 10px 16px;
            gap: 12px;
        }

        /* Hero Section */
        .hero {
            padding: 130px 0 70px;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.9) 0%, rgba(15, 12, 32, 0.95) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-lime);
            margin-bottom: 20px;
        }

        .hero-badge i {
            font-size: 0.7rem;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--accent-lime) 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 13px 28px;
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: var(--accent-lime);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 0 25px rgba(204, 255, 0, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            background: #e0ff33;
            box-shadow: 0 0 40px rgba(204, 255, 0, 0.55);
            transform: translateY(-2px);
            color: var(--bg-primary);
        }

        .btn-secondary {
            padding: 13px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

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

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-lift);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .hero-image-wrapper:hover img {
            transform: scale(1.03);
        }

        .hero-image-wrapper::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 50%;
            background: linear-gradient(to top, rgba(15, 12, 32, 0.8) 0%, transparent 100%);
            pointer-events: none;
        }

        .floating-stat {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(15, 12, 32, 0.9);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            z-index: 3;
        }

        .floating-stat i {
            font-size: 1.5rem;
            color: var(--accent-lime);
        }

        .floating-stat .stat-value {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .floating-stat .stat-label {
            font-size: 0.7rem;
            color: var(--text-secondary);
        }

        /* Section common */
        .section {
            padding: 70px 0;
            position: relative;
        }

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

        .section-header {
            text-align: left;
            margin-bottom: 45px;
            max-width: 680px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

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

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 30px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lime) 0%, var(--accent-cyan) 100%);
            opacity: 0;
            transition: var(--transition-smooth);
        }

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

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

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(204, 255, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: var(--transition-fast);
        }

        .feature-card:hover .feature-icon {
            background: rgba(204, 255, 0, 0.2);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.2);
        }

        .feature-icon i {
            font-size: 1.4rem;
            color: var(--accent-lime);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

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

        .process-step {
            text-align: left;
            position: relative;
            padding: 25px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            transition: var(--transition-fast);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(204, 255, 0, 0.2);
        }

        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            opacity: 0.6;
            margin-bottom: 10px;
            line-height: 1;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Tool showcase */
        .tool-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .tool-info {
            text-align: left;
        }

        .tool-info h2 {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .tool-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .tool-list {
            list-style: none;
            padding: 0;
            margin: 0 0 25px;
        }

        .tool-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-soft);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

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

        .tool-list li i {
            color: var(--accent-lime);
            font-size: 0.9rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .tool-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-lift);
        }

        .tool-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .tool-image:hover img {
            transform: scale(1.05);
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(204, 255, 0, 0.3);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition-fast);
        }

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

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

        .faq-answer-inner {
            padding: 0 22px 20px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, #1A1640 50%, var(--bg-card) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 550px;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: #0A0818;
            border-top: 1px solid var(--border-soft);
            padding: 60px 0 30px;
            position: relative;
            z-index: 1;
        }

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

        .footer-brand .logo {
            font-size: 1.05rem;
            margin-bottom: 14px;
            display: block;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition-fast);
        }

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

        .payment-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .payment-badges span {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-soft);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-soft);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            animation: fabPulse 3s ease-in-out infinite;
            opacity: 0.7;
        }

        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-lime) 0%, var(--accent-cyan) 100%);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        .fab-support i {
            font-size: 1.3rem;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
            position: relative;
            z-index: 2;
        }

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

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

        .fab-support:hover i {
            color: var(--accent-lime);
            transform: scale(1.1);
        }

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

        @keyframes fabPulse {
            0%, 100% {
                box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            }
        }

        @keyframes dotBlink {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }

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

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .tool-showcase {
                gap: 30px;
            }

            .tool-image img {
                height: 320px;
            }
        }

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

            .main-nav {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .auth-buttons {
                display: flex;
                gap: 6px;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }

            .logo {
                font-size: 0.95rem;
                max-width: 200px;
            }

            .hero {
                padding: 100px 0 50px;
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: 35px;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

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

            .hero-image-wrapper img {
                height: 260px;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

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

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

            .cta-section {
                padding: 35px 25px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .section {
                padding: 50px 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

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

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

            .fab-support {
                width: 46px;
                height: 46px;
                left: 12px;
                bottom: 80px;
            }

            .fab-support i {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 0.85rem;
                max-width: 160px;
            }

            .btn-login {
                display: none;
            }

            .btn-signup {
                padding: 6px 10px;
                font-size: 0.7rem;
            }

            .hero h1 {
                font-size: 1.5rem;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

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

            .section-header h2 {
                font-size: 1.3rem;
            }

            .feature-card {
                padding: 20px;
            }

            .process-step {
                padding: 18px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151230;
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #2A2545;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.35);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-primary: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-neon);
            transition: background var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            min-height: 72px;
            padding: var(--spacing-xs) 0;
        }

        .logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
            line-height: 1.3;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--bg-primary);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-silver);
            transition: all var(--transition-fast);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.08);
        }

        .main-nav a.active {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.12);
        }

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

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

        .btn-login {
            padding: 10px 18px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-white);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            background: transparent;
            border: 1px solid transparent;
        }

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

        .btn-signup {
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-primary), #a8d400);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-lime);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.45);
            color: var(--bg-primary);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-neon);
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero Section */
        .hero {
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.05), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-primary);
            margin-bottom: var(--spacing-md);
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--accent-primary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.3); }
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-md);
            background: linear-gradient(135deg, #FFFFFF 40%, var(--accent-secondary) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 14px 32px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-primary), #b8e600);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-lime);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(204, 255, 0, 0.5);
            color: var(--bg-primary);
        }

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

        .btn-secondary {
            padding: 14px 28px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            background: transparent;
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: var(--shadow-neon);
        }

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

        .hero-visual-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
            width: 100%;
            max-width: 480px;
        }

        .hero-icon-box {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: all var(--transition-base);
            aspect-ratio: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-xs);
        }

        .hero-icon-box:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-neon);
            transform: translateY(-5px);
        }

        .hero-icon-box .icon {
            font-size: 2.2rem;
            line-height: 1;
        }

        .hero-icon-box .label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
        }

        .hero-status-bar {
            margin-top: var(--spacing-md);
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-sm);
        }

        .hero-status-bar .status-dot {
            width: 10px;
            height: 10px;
            background: #00E676;
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        .hero-status-bar span {
            font-size: 0.9rem;
            color: var(--text-silver);
        }

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

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

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 640px;
            line-height: 1.7;
        }

        /* Feature Grid */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

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

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

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

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

        .feature-card .card-icon {
            font-size: 2rem;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        /* Split Section */
        .split-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .split-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }

        .split-content p {
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

        .split-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-neon);
            position: relative;
        }

        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .split-image:hover img {
            transform: scale(1.03);
        }

        .split-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 12, 32, 0.4));
            pointer-events: none;
        }

        /* Steps Section */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            position: relative;
            transition: all var(--transition-base);
        }

        .step-item:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-lime);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: var(--bg-primary);
            font-weight: 900;
            font-size: 1.1rem;
            border-radius: 50%;
            margin-bottom: var(--spacing-sm);
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* FAQ Section */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-primary);
            transition: transform var(--transition-base);
            font-size: 1.2rem;
            font-weight: 700;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 var(--spacing-md);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer p {
            color: var(--text-silver);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* CTA Section */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.08));
            border-top: 1px solid var(--border-neon);
            border-bottom: 1px solid var(--border-neon);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .cta-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.02em;
        }

        .cta-content p {
            color: var(--text-silver);
            font-size: 1.05rem;
        }

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

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

        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

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

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

        .payment-badges {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
        }

        .payment-badges span {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-neon);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
        }

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

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

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(15, 12, 32, 0.85), rgba(15, 12, 32, 0.85)), linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-primary);
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            animation: fab-float 3s ease-in-out infinite;
        }

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

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
        }

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

        .fab .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse-dot 1.5s infinite;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-section {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                min-height: auto;
                padding: var(--spacing-xs) 0;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: var(--spacing-sm) 0;
                background: var(--bg-primary);
                border-top: 1px solid var(--border-neon);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: var(--spacing-sm) var(--spacing-md);
                border-radius: 0;
                font-size: 1rem;
            }
            .main-nav a.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-actions {
                margin-left: auto;
            }
            .hero {
                padding: var(--spacing-lg) 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-visual-grid {
                grid-template-columns: repeat(2, 1fr);
                max-width: 100%;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-login {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .logo {
                font-size: 1.05rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B3C25;
            --secondary-bg: #062315;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-white: #FFFDF0;
            --text-light: #C5E2D2;
            --text-muted: #8FB8A4;
            --border-gold: rgba(255, 204, 0, 0.3);
            --border-light: rgba(255, 253, 240, 0.12);
            --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.28);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.35);
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --radius-full: 999px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.65;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            width: 100%;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(6, 35, 21, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            padding: 1rem 0;
            min-height: 72px;
        }

        .logo {
            font-weight: 900;
            font-size: 1.15rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            line-height: 1.3;
            max-width: 260px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 0.6rem 1.1rem;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        .main-nav a.active {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.12);
            font-weight: 700;
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 0.6rem 1.2rem;
            border-radius: var(--radius-full);
            border: 1px solid var(--border-light);
        }

        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.05);
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            font-weight: 800;
            font-size: 0.9rem;
            padding: 0.6rem 1.4rem;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 16px rgba(255, 204, 0, 0.3);
        }

        .btn-signup:hover {
            background: #FFD633;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 204, 0, 0.4);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 204, 0, 0.25);
        }

        /* Hero Section */
        .hero {
            background-image: linear-gradient(rgba(6, 35, 21, 0.82), rgba(6, 35, 21, 0.92)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            border-bottom: 1px solid var(--border-light);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(255, 204, 0, 0.08), transparent 60%);
            pointer-events: none;
        }

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

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

        .hero-badge {
            display: inline-block;
            background: rgba(255, 204, 0, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
            padding: 0.4rem 1.2rem;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-md);
            color: var(--text-white);
        }

        .hero h1 .highlight {
            color: var(--accent-gold);
        }

        .hero-description {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 560px;
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

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

        .btn-primary {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            font-weight: 800;
            font-size: 1rem;
            padding: 1rem 2.2rem;
            border-radius: var(--radius-full);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
            transition: all var(--transition-base);
        }

        .btn-primary:hover {
            background: #FFD633;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 204, 0, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(255, 204, 0, 0.25);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            padding: 1rem 2.2rem;
            border-radius: var(--radius-full);
            border: 2px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.06);
            transform: translateY(-3px);
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .hero-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 2px solid var(--border-gold);
            aspect-ratio: 16/10;
            background: var(--secondary-bg);
        }

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

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }

        .hero-stat {
            background: rgba(6, 35, 21, 0.7);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 1rem 1.25rem;
            text-align: center;
            backdrop-filter: blur(8px);
        }

        .hero-stat-number {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-gold);
            display: block;
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .section {
            margin-bottom: var(--spacing-2xl);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1.5rem;
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--text-white);
            line-height: 1.3;
            max-width: 600px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 520px;
            line-height: 1.7;
        }

        /* Program Cards */
        .program-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .program-card {
            background: var(--secondary-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .program-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-md);
        }

        .program-card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--primary-bg);
            position: relative;
        }

        .program-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .program-card:hover .program-card-image img {
            transform: scale(1.05);
        }

        .program-card-tag {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: var(--accent-gold);
            color: var(--secondary-bg);
            font-weight: 800;
            font-size: 0.75rem;
            padding: 0.35rem 0.9rem;
            border-radius: var(--radius-full);
            z-index: 2;
        }

        .program-card-tag.hot {
            background: #FF4500;
            color: white;
        }

        .program-card-body {
            padding: 1.5rem;
        }

        .program-card-title {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            line-height: 1.4;
        }

        .program-card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .program-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 1rem;
            border-top: 1px solid var(--border-light);
        }

        .program-card-link {
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
        }

        .program-card:hover .program-card-link {
            letter-spacing: 0.02em;
        }

        /* Steps Section */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            counter-reset: step;
        }

        .step-item {
            background: var(--secondary-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            position: relative;
            transition: all var(--transition-base);
            counter-increment: step;
        }

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

        .step-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 1rem;
            display: block;
            opacity: 0.9;
        }

        .step-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }

        .step-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Benefits */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .benefit-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            padding: 1.5rem;
            background: var(--secondary-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .benefit-item:hover {
            border-color: var(--border-gold);
            background: rgba(6, 35, 21, 0.8);
        }

        .benefit-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: rgba(255, 204, 0, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            border: 1px solid var(--border-gold);
        }

        .benefit-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .benefit-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
        }

        .faq-item {
            background: var(--secondary-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            width: 100%;
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            padding: 1.2rem 1.5rem;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
        }

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

        .faq-icon {
            min-width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            font-size: 1rem;
            color: var(--accent-gold);
            transition: transform var(--transition-base);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent-gold);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 0 1.5rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.5rem;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 50%, var(--secondary-bg) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            border: 1px solid var(--border-gold);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(255, 204, 0, 0.06), transparent 60%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }

        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-light);
            padding: var(--spacing-xl) 0 0;
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2rem;
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .logo {
            font-size: 1.2rem;
            display: block;
            margin-bottom: 1rem;
            max-width: none;
            white-space: normal;
        }

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

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

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

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

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

        .payment-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .payment-badges span {
            background: rgba(255, 204, 0, 0.08);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.4rem 0.9rem;
            border-radius: var(--radius-full);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding: 1.25rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--secondary-bg);
            border: 3px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.3);
            opacity: 0.7;
            animation: fabBreathe 3s ease-in-out infinite;
            transition: all var(--transition-base);
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 204, 0, 0.45);
        }

        .fab:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF0000;
            border-radius: 50%;
            border: 2px solid var(--secondary-bg);
            animation: fabDot 1.5s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% {
                opacity: 0.7;
                transform: translateY(0);
            }
            50% {
                opacity: 0.85;
                transform: translateY(-6px);
            }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 1.5rem;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .program-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 0.75rem;
                padding: 0.75rem 0;
            }
            .logo {
                font-size: 1rem;
                max-width: 200px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 0.5rem;
                gap: 0.15rem;
                flex-wrap: nowrap;
                justify-content: flex-start;
            }
            .main-nav a {
                padding: 0.5rem 0.9rem;
                font-size: 0.82rem;
                white-space: nowrap;
                flex-shrink: 0;
            }
            .nav-actions {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.82rem;
            }
            .hero {
                padding: var(--spacing-xl) 0;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-description {
                font-size: 1rem;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.5rem;
            }
            .hero-stat {
                padding: 0.75rem 0.6rem;
            }
            .hero-stat-number {
                font-size: 1.2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .program-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .benefits-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-section {
                padding: var(--spacing-lg);
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .header-inner {
                gap: 0.5rem;
            }
            .logo {
                font-size: 0.9rem;
                max-width: 160px;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.8rem;
                font-size: 0.75rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 0.4rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 0.75rem;
                bottom: 5rem;
            }
        }