/* roulang page: index */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }

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

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

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

        /* Header & Navigation */
        .main-header {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 14px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
        }
        .brand-logo i { margin-right: 8px; color: var(--accent-cyan); }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            transition: 0.2s;
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--accent-gold);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
        }

        .auth-buttons {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255,255,255,0.3);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            transition: 0.25s;
            cursor: pointer;
        }
        .btn-login:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 24px;
            border-radius: 24px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
            transition: 0.25s;
        }
        .btn-signup:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 215, 0, 0.5); }

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

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3.5rem 0 4.5rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255,215,0,0.15);
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.3;
            margin-bottom: 1.25rem;
            text-shadow: 0 0 18px rgba(255,215,0,0.4);
        }
        .hero-desc {
            font-size: 1.15rem;
            color: #CBD5E1;
            margin-bottom: 2rem;
            max-width: 650px;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary-glow {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 14px 34px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
            transition: 0.25s;
            box-shadow: 0 0 22px rgba(255,215,0,0.45);
            cursor: pointer;
        }
        .btn-primary-glow:hover { transform: scale(1.04); box-shadow: 0 0 32px rgba(255,215,0,0.7); }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2.2rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .hero-image-panel {
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            height: 320px;
            box-shadow: 0 12px 30px rgba(0,240,255,0.1);
            border: 1px solid rgba(255,215,0,0.25);
            position: relative;
        }
        .hero-image-panel::after {
            content: "SĂN BOSS ĐỔI THƯỞNG";
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(0,0,0,0.65);
            color: var(--accent-gold);
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 700;
        }

        /* Section General */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-sub {
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            font-size: 1.05rem;
        }
        .divider-gold {
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            margin-bottom: 1.8rem;
            border-radius: 4px;
        }

        /* Gateway Matrix */
        .gateway-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.2rem;
            text-align: left;
            border: 1px solid rgba(255,215,0,0.12);
            transition: 0.25s;
            height: 100%;
        }
        .gateway-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .gateway-icon {
            font-size: 2.8rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        /* Timeline */
        .timeline-node {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
            align-items: flex-start;
        }
        .timeline-marker {
            background: var(--accent-gold);
            width: 14px;
            height: 14px;
            border-radius: 50%;
            margin-top: 6px;
            box-shadow: 0 0 12px var(--accent-gold);
        }

        /* Pricing Compare */
        .compare-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            border: 1px solid transparent;
            transition: 0.3s;
            height: 100%;
        }
        .compare-card.recommended {
            border: 2px solid var(--accent-gold);
            box-shadow: 0 0 28px rgba(255,215,0,0.25);
            position: relative;
        }
        .badge-hot {
            background: #D32F2F;
            color: white;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            position: absolute;
            top: -12px;
            left: 20px;
        }

        /* News list */
        .news-list-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .news-list-item a {
            color: var(--text-main);
            font-weight: 500;
            text-decoration: none;
        }
        .news-list-item a:hover { color: var(--accent-gold); }

        /* Brand Story */
        .story-block {
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            position: relative;
        }
        .story-overlay {
            background: rgba(11, 26, 48, 0.8);
            backdrop-filter: blur(6px);
            border-radius: var(--radius-md);
            padding: 2.2rem;
            max-width: 500px;
        }

        /* Footer */
        .main-footer {
            background: #071126;
            border-top: 1px solid rgba(255,215,0,0.2);
            padding: 2.5rem 0 1.5rem;
            color: var(--text-muted);
        }
        .footer-brand {
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 1.3rem;
        }
        .footer-links a { color: var(--text-muted); text-decoration: none; margin-right: 1.5rem; }
        .footer-links a:hover { color: var(--accent-gold); }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(0,0,0,0.75);
            backdrop-filter: blur(10px);
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid #00F0FF;
            box-shadow: 0 0 18px rgba(0,240,255,0.6);
            color: #00F0FF;
            font-size: 1.5rem;
            transition: 0.3s;
            cursor: pointer;
        }
        .fab-left:hover { transform: scale(1.1); background: #00F0FF; color: #000; }

        @media (max-width: 1024px) {
            .hero-content h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .nav-links, .auth-buttons .btn-login, .auth-buttons .btn-signup { display: none; }
            .mobile-menu-toggle { display: block; }
            .hero-image-panel { height: 220px; margin-top: 2rem; }
            .hero-stats { flex-direction: column; gap: 0.8rem; }
        }

/* roulang page: article */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            background-color: var(--primary-bg);
            color: var(--text-main);
            font-family: var(--font-main);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-header {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 14px 0;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
            text-decoration: none;
        }
        .brand-logo i {
            margin-right: 8px;
            color: var(--accent-cyan);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
        }
        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            transition: 0.2s;
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
        }
        .auth-buttons {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            transition: 0.25s;
            cursor: pointer;
            text-decoration: none;
            font-size: 0.9rem;
        }
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 24px;
            border-radius: 24px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
            transition: 0.25s;
            text-decoration: none;
            font-size: 0.9rem;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 215, 0, 0.5);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .article-header {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3rem 0 2rem;
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: relative;
        }
        .article-header::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: 0.08;
            z-index: 0;
        }
        .article-header-content {
            position: relative;
            z-index: 1;
        }
        .article-category-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }
        .article-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.35;
            margin-bottom: 1rem;
            text-shadow: 0 0 14px rgba(255, 215, 0, 0.3);
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .article-meta span i {
            margin-right: 6px;
            color: var(--accent-cyan);
        }
        .article-body {
            padding: 3rem 0 4rem;
        }
        .article-content-wrapper {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border-light);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .article-content-wrapper h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 2rem 0 1rem;
        }
        .article-content-wrapper h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin: 1.5rem 0 0.8rem;
        }
        .article-content-wrapper p {
            font-size: 1.05rem;
            line-height: 1.75;
            color: #CBD5E1;
            margin-bottom: 1.2rem;
        }
        .article-content-wrapper ul,
        .article-content-wrapper ol {
            margin: 1rem 0 1.5rem 1.5rem;
            color: #CBD5E1;
        }
        .article-content-wrapper li {
            margin-bottom: 0.6rem;
            line-height: 1.7;
        }
        .article-content-wrapper img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            border: 1px solid var(--border-light);
        }
        .article-content-wrapper blockquote {
            border-left: 4px solid var(--accent-gold);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(255, 215, 0, 0.05);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: #E2E8F0;
        }
        .article-cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(255, 215, 0, 0.08));
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 2rem;
            margin: 2.5rem 0;
            text-align: center;
        }
        .article-cta-box h3 {
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
            font-size: 1.3rem;
        }
        .article-cta-box p {
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        .article-cta-box .btn-primary-glow {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 12px 30px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            box-shadow: 0 0 18px rgba(255, 215, 0, 0.4);
            text-decoration: none;
            display: inline-block;
        }
        .article-cta-box .btn-primary-glow:hover {
            transform: scale(1.03);
            box-shadow: 0 0 26px rgba(255, 215, 0, 0.65);
        }
        .not-found-section {
            text-align: center;
            padding: 4rem 0;
        }
        .not-found-section i {
            font-size: 4rem;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
        }
        .not-found-section h2 {
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        .not-found-section .btn-back {
            background: var(--gradient-btn);
            color: #0A0A0A;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            margin-top: 1.5rem;
            transition: 0.25s;
        }
        .not-found-section .btn-back:hover {
            transform: scale(1.04);
            box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
        }
        .main-footer {
            background: #071126;
            padding: 2rem 0;
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .main-footer .footer-brand {
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .main-footer .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            margin-right: 1.2rem;
            transition: 0.2s;
        }
        .main-footer .footer-links a:hover {
            color: var(--accent-gold);
        }
        /* FAB */
        .fab-floating {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(8px);
            border: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: 0.3s;
            animation: floatBreath 3s ease-in-out infinite;
        }
        .fab-floating:hover {
            transform: scale(1.12);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.55);
        }
        .fab-floating i {
            font-size: 1.6rem;
            color: var(--accent-cyan);
        }
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF4500;
            border-radius: 50%;
            border: 2px solid #0B1A30;
            animation: pulse 1.5s infinite;
        }
        @keyframes floatBreath {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }
        /* Responsive */
        @media screen and (max-width: 1024px) {
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-content-wrapper {
                padding: 1.8rem;
            }
        }
        @media screen and (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                padding: 1rem 0;
                gap: 0.8rem;
                margin-top: 12px;
                border-radius: var(--radius-md);
                border: 1px solid var(--border-light);
            }
            .nav-links.show {
                display: flex;
            }
            .auth-buttons {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-content-wrapper {
                padding: 1.5rem;
            }
            .article-meta {
                gap: 1rem;
                font-size: 0.8rem;
            }
        }
        @media screen and (max-width: 520px) {
            .brand-logo {
                font-size: 1.1rem;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .article-content-wrapper {
                padding: 1.2rem;
                border-radius: var(--radius-md);
            }
            .article-content-wrapper p {
                font-size: 0.95rem;
            }
            .article-cta-box {
                padding: 1.5rem;
            }
            .main-footer .grid-x {
                text-align: center;
            }
            .main-footer .cell:last-child {
                text-align: center !important;
                margin-top: 0.8rem;
            }
            .fab-floating {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
            .fab-floating i {
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --accent-electric: #0052FF;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        /* Header & Navigation */
        .main-header {
            background: rgba(11, 26, 48, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 60;
            padding: 14px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
            white-space: nowrap;
        }

        .brand-logo i {
            margin-right: 8px;
            color: var(--accent-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
        }

        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            transition: 0.25s;
            position: relative;
            padding-bottom: 6px;
            white-space: nowrap;
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 4px;
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.35);
            padding: 8px 22px;
            border-radius: 26px;
            font-weight: 600;
            transition: 0.25s;
            cursor: pointer;
            font-size: 0.9rem;
        }

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

        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 26px;
            border-radius: 26px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.4);
            transition: 0.25s;
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 215, 0, 0.6);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
        }

        /* Category Hero */
        .category-hero {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3rem 0 3.5rem;
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(0, 240, 255, 0.3);
            position: relative;
            z-index: 1;
        }

        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.3;
            margin-bottom: 1.2rem;
            text-shadow: 0 0 20px rgba(255, 215, 0, 0.45);
            position: relative;
            z-index: 1;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: #CBD5E1;
            margin-bottom: 2rem;
            max-width: 650px;
            position: relative;
            z-index: 1;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .btn-primary-glow {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 14px 36px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
            transition: 0.25s;
            box-shadow: 0 0 24px rgba(255, 215, 0, 0.5);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            transform: scale(1.04);
            box-shadow: 0 0 35px rgba(255, 215, 0, 0.75);
        }

        .hero-image-panel {
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            height: 320px;
            box-shadow: 0 14px 35px rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.3);
            position: relative;
            z-index: 1;
        }

        .hero-image-panel::after {
            content: "TẢI APP NGAY";
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(0, 0, 0, 0.7);
            color: var(--accent-gold);
            padding: 8px 24px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 1px;
        }

        .promo-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 69, 0, 0.2);
            border: 1px solid rgba(255, 69, 0, 0.5);
            color: #FF4500;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            animation: pulse-tag 1.8s infinite;
        }

        @keyframes pulse-tag {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }

        /* Section General */
        .section-padding {
            padding: 4rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-sub {
            color: var(--text-muted);
            margin-bottom: 2.8rem;
            font-size: 1.05rem;
            max-width: 700px;
        }

        .divider-gold {
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            margin-bottom: 1.8rem;
            border-radius: 4px;
        }

        /* Step by Step Guide */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }

        .step-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 1.8rem 2rem;
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            transition: 0.25s;
            position: relative;
        }

        .step-item:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.1);
        }

        .step-number {
            background: var(--gradient-btn);
            color: #0A0A0A;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .step-body h4 {
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--accent-gold);
            font-size: 1.2rem;
        }

        .step-body p {
            color: #CBD5E1;
            margin: 0;
            font-size: 0.95rem;
        }

        .device-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 82, 255, 0.4);
            color: #4782FF;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            margin-right: 8px;
        }

        /* Benefit Cards */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }

        .benefit-card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            transition: 0.3s;
        }

        .benefit-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 6px 18px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .benefit-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .benefit-card h4 {
            font-weight: 700;
            margin-bottom: 0.6rem;
            font-size: 1.15rem;
        }

        .benefit-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.8rem;
            cursor: pointer;
            transition: 0.25s;
        }

        .faq-item:hover {
            border-color: var(--accent-gold);
            background: #142850;
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-main);
        }

        .faq-answer {
            color: #CBD5E1;
            margin-top: 0.7rem;
            font-size: 0.95rem;
            display: none;
            line-height: 1.6;
        }

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

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

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, #112240 0%, #0B1A30 100%);
            border: 1px solid rgba(255, 215, 0, 0.35);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: left;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
        }

        .cta-banner h3 {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .cta-banner p {
            color: #CBD5E1;
            margin-bottom: 1.8rem;
            max-width: 600px;
        }

        .payment-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 1.2rem;
        }

        .payment-badge {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #CBD5E1;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Footer */
        .main-footer {
            background: #0A1120;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: 2.5rem 0;
            margin-top: 2rem;
        }

        .main-footer .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }

        .footer-links {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.9rem;
            transition: 0.2s;
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-image-panel {
                height: 260px;
            }
            .nav-links {
                gap: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                margin-top: 16px;
                padding: 16px 0;
                border-radius: 12px;
            }
            .nav-links.active-mobile {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .auth-buttons {
                order: -1;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-image-panel {
                height: 220px;
                margin-top: 1.5rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .cta-banner {
                padding: 2rem 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .btn-primary-glow {
                padding: 12px 24px;
                font-size: 1rem;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }
        body {
            background-color: var(--primary-bg);
            color: var(--text-main);
            font-family: var(--font-main);
            line-height: 1.6;
            overflow-x: hidden;
            margin: 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-header {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 14px 0;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
        }
        .brand-logo i { margin-right: 8px; color: var(--accent-cyan); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            text-decoration: none;
            transition: 0.2s;
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--accent-gold);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
        }
        .auth-buttons {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255,255,255,0.3);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            transition: 0.25s;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-login:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 24px;
            border-radius: 24px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
            transition: 0.25s;
            text-decoration: none;
        }
        .btn-signup:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 215, 0, 0.5); }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .page-hero {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3rem 0 3.5rem;
            border-bottom: 1px solid var(--border-light);
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.35;
            margin-bottom: 1rem;
            text-shadow: 0 0 16px rgba(255,215,0,0.35);
        }
        .booking-panel {
            background: rgba(17, 34, 64, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin-top: 1rem;
        }
        .booking-panel label {
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 4px;
        }
        .booking-panel select, .booking-panel input {
            background: #1E3558;
            border: 1px solid var(--border-light);
            color: var(--text-main);
            border-radius: 8px;
            padding: 10px;
            width: 100%;
            margin-bottom: 1rem;
        }
        .step-block {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 2rem;
            margin-bottom: 1.5rem;
            border-left: 5px solid var(--accent-cyan);
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
        }
        .step-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            opacity: 0.8;
        }
        .code-badge {
            background: linear-gradient(135deg, #FFD700, #FF9F00);
            color: #0A0A0A;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-block;
        }
        .faq-item {
            background: var(--card-bg);
            padding: 1.4rem;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            border: 1px solid transparent;
            transition: 0.3s;
        }
        .faq-item:hover { border-color: var(--accent-gold); }
        .faq-item h4 { color: var(--accent-gold); font-weight: 700; }
        .footer-cta {
            background: linear-gradient(135deg, #112240, #0B1A30);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            text-align: center;
            margin: 3rem 0 2rem;
        }
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(11,26,48,0.96);
            backdrop-filter: blur(12px);
            padding: 12px 20px;
            display: flex;
            justify-content: center;
            gap: 1rem;
            border-top: 1px solid var(--border-light);
            z-index: 40;
        }
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 110px;
            width: 56px;
            height: 56px;
            background: rgba(11, 26, 48, 0.8);
            backdrop-filter: blur(8px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 18px rgba(0,240,255,0.45);
            z-index: 45;
            cursor: pointer;
            transition: 0.3s;
            animation: floatNeon 2.8s infinite ease-in-out;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            padding: 4px;
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: destination-out;
        }
        .fab-left:hover { transform: scale(1.1); }
        @keyframes floatNeon {
            0% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
            100% { transform: translateY(0); }
        }
        .main-footer {
            background: #071126;
            padding: 2rem 0;
            margin-top: 3rem;
            border-top: 1px solid rgba(255,215,0,0.2);
        }
        .footer-brand { font-weight: 800; color: var(--accent-gold); font-size: 1.2rem; }
        .footer-links a { color: var(--text-muted); margin-right: 1.5rem; font-size: 0.9rem; }
        .divider-gold {
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            margin-bottom: 1.8rem;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; width: 100%; background: #0B1A30; padding: 1rem; }
            .nav-links.open { display: flex; }
            .mobile-menu-toggle { display: block; }
            .page-hero h1 { font-size: 1.9rem; }
            .booking-panel { padding: 1.2rem; }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        .main-header {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 14px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
        }

        .brand-logo i {
            margin-right: 8px;
            color: var(--accent-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: 0.2s;
            position: relative;
            padding-bottom: 4px;
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            transition: 0.25s;
        }

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

        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 24px;
            border-radius: 24px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
            transition: 0.25s;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 215, 0, 0.5);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
        }

        .hero-section {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3.5rem 0 4.5rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.3;
            margin-bottom: 1.25rem;
            text-shadow: 0 0 18px rgba(255, 215, 0, 0.4);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #CBD5E1;
            margin-bottom: 2rem;
            max-width: 650px;
        }

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

        .btn-primary-glow {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 14px 34px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
            transition: 0.25s;
            box-shadow: 0 0 22px rgba(255, 215, 0, 0.45);
        }

        .btn-primary-glow:hover {
            transform: scale(1.04);
            box-shadow: 0 0 32px rgba(255, 215, 0, 0.7);
        }

        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2.2rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .hero-image-panel {
            background: url('/assets/images/coverpic/cover-5.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            height: 320px;
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.25);
            position: relative;
        }

        .hero-image-panel::after {
            content: "GIFTCODE ĐỘC QUYỀN";
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(0, 0, 0, 0.65);
            color: var(--accent-gold);
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 700;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-sub {
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            font-size: 1.05rem;
        }

        .divider-gold {
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            margin-bottom: 1.8rem;
            border-radius: 4px;
        }

        .invite-hero {
            background: linear-gradient(135deg, #112240 0%, #1A2D50 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            margin: 3rem 0;
            border: 1px solid var(--border-light);
        }

        .progress-bar-bg {
            background: #1E3A5F;
            border-radius: 20px;
            height: 24px;
            overflow: hidden;
            margin: 1.5rem 0;
            position: relative;
        }

        .progress-bar-fill {
            background: linear-gradient(90deg, #FFD700, #FF9F00);
            height: 100%;
            width: 65%;
            border-radius: 20px;
            box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
            transition: width 0.6s ease;
        }

        .invite-milestones {
            display: flex;
            justify-content: space-between;
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        .offer-card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            transition: all 0.25s;
            height: 100%;
        }

        .offer-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .offer-icon {
            font-size: 2.5rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .offer-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--accent-gold);
        }

        .offer-card p {
            color: #CBD5E1;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .giftcode-card {
            background: var(--card-bg);
            border: 2px dashed rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-md);
            padding: 2rem;
            text-align: center;
            position: relative;
            transition: 0.25s;
        }

        .giftcode-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
        }

        .code-display {
            background: #0A0E1A;
            border: 1px solid var(--accent-gold);
            color: var(--accent-cyan);
            font-family: 'Courier New', monospace;
            font-size: 1.5rem;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 8px;
            letter-spacing: 2px;
            margin: 1rem 0;
            display: inline-block;
            word-break: break-all;
        }

        .btn-copy-code {
            background: var(--accent-cyan);
            color: #0A0E1A;
            border: none;
            padding: 10px 28px;
            border-radius: 24px;
            font-weight: 700;
            transition: 0.25s;
            margin-top: 0.5rem;
        }

        .btn-copy-code:hover {
            background: #00D4E8;
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.4);
        }

        .expiry-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: #D32F2F;
            color: #FFF;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .faq-question {
            padding: 1.2rem 1.8rem;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: 0.2s;
            color: var(--text-main);
        }

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

        .faq-answer {
            padding: 0 1.8rem 1.2rem;
            color: #CBD5E1;
            line-height: 1.7;
            display: none;
        }

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

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

        .cta-section {
            background: linear-gradient(135deg, #0F2040 0%, #0B1A30 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            margin: 3.5rem 0;
            text-align: center;
            border: 1px solid var(--border-light);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .main-footer {
            background: #071126;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: 2.5rem 0;
            margin-top: 3rem;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .footer-brand {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            color: var(--text-muted);
            margin-right: 1.8rem;
            transition: 0.2s;
            font-weight: 500;
        }

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

        .floating-fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 100;
            width: 54px;
            height: 54px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #FFD700) 1;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.5);
            transition: 0.3s;
            cursor: pointer;
            animation: fabPulse 1.8s infinite;
        }

        .floating-fab i {
            color: var(--accent-cyan);
            font-size: 1.6rem;
        }

        .floating-fab:hover {
            transform: scale(1.12);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
        }

        @keyframes fabPulse {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 1.2rem;
            }
            .brand-logo {
                font-size: 1.2rem;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                margin-top: 12px;
                padding: 1rem 0;
                gap: 1rem;
                border-radius: 8px;
            }
            .nav-links.show {
                display: flex;
            }
            .auth-buttons {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.85rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-image-panel {
                height: 220px;
                margin-top: 2rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.8rem;
            }
            .invite-hero {
                padding: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .floating-fab {
                left: 12px;
                bottom: 72px;
                width: 46px;
                height: 46px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-primary-glow {
                width: 100%;
                text-align: center;
            }
            .code-display {
                font-size: 1.1rem;
                padding: 8px 16px;
            }
            .giftcode-card {
                padding: 1.2rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #0B1A30;
            --card-bg: #112240;
            --accent-gold: #FFD700;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-main: #F5F5F7;
            --text-muted: #A6ACAF;
            --border-light: rgba(255, 215, 0, 0.25);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --gradient-btn: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --gradient-neon: linear-gradient(135deg, #CCFF00 0%, #00F0FF 100%);
            --radius-md: 12px;
            --radius-lg: 18px;
            --font-main: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            background-color: var(--primary-bg);
            color: var(--text-main);
            font-family: var(--font-main);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        img {
            max-width: 100%;
            height: auto;
        }
        
        button {
            cursor: pointer;
            font-family: var(--font-main);
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .main-header {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 14px 0;
        }
        
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        
        .brand-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            white-space: nowrap;
        }
        
        .brand-logo i {
            margin-right: 8px;
            color: var(--accent-cyan);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
        }
        
        .nav-links a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: 0.2s;
            position: relative;
            padding-bottom: 4px;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
        }
        
        .auth-buttons {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            transition: 0.25s;
            cursor: pointer;
            white-space: nowrap;
        }
        
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        
        .btn-signup {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 9px 24px;
            border-radius: 24px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
            transition: 0.25s;
            white-space: nowrap;
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 215, 0, 0.5);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
        }
        
        .hero-section {
            background: linear-gradient(135deg, #0B1A30 0%, #071126 100%);
            padding: 3rem 0 3.5rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
        }
        
        .hero-content {
            max-width: 650px;
        }
        
        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.3;
            margin-bottom: 1rem;
            text-shadow: 0 0 18px rgba(255, 215, 0, 0.4);
        }
        
        .hero-desc {
            font-size: 1.1rem;
            color: #CBD5E1;
            margin-bottom: 2rem;
        }
        
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        
        .btn-primary-glow {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 14px 34px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.05rem;
            letter-spacing: 0.3px;
            transition: 0.25s;
            box-shadow: 0 0 22px rgba(255, 215, 0, 0.45);
            cursor: pointer;
            display: inline-block;
            text-align: center;
        }
        
        .btn-primary-glow:hover {
            transform: scale(1.04);
            box-shadow: 0 0 32px rgba(255, 215, 0, 0.7);
        }
        
        .hero-image-panel {
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            height: 300px;
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.25);
            position: relative;
        }
        
        .hero-image-panel::after {
            content: "CODE GIẢM GIÁ 50%";
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(0, 0, 0, 0.7);
            color: var(--accent-lime);
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
        }
        
        .section-padding {
            padding: 4rem 0;
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .section-title i {
            color: var(--accent-gold);
        }
        
        .section-sub {
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            font-size: 1.05rem;
            line-height: 1.5;
        }
        
        .divider-gold {
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            margin-bottom: 1.8rem;
            border-radius: 4px;
        }
        
        .promo-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--border-light);
            transition: 0.3s;
            position: relative;
            overflow: hidden;
            margin-bottom: 2rem;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .promo-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-neon);
        }
        
        .promo-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }
        
        .promo-badge {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: linear-gradient(135deg, #CCFF00, #32CD32);
            color: #0A0A0A;
            padding: 5px 16px;
            border-radius: 20px;
            font-weight: 800;
            font-size: 0.8rem;
            letter-spacing: 0.5px;
        }
        
        .promo-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
            padding-right: 80px;
        }
        
        .promo-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }
        
        .promo-detail {
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }
        
        .promo-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            padding-top: 1.2rem;
            font-size: 0.85rem;
            color: #94A3B8;
        }
        
        .btn-copy-code {
            background: var(--gradient-btn);
            color: #0A0A0A;
            border: none;
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: 0.25s;
            box-shadow: 0 3px 10px rgba(255, 215, 0, 0.3);
        }
        
        .btn-copy-code:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.5);
        }
        
        .code-display {
            background: #0A1525;
            border: 1px dashed var(--accent-gold);
            padding: 8px 16px;
            border-radius: 8px;
            font-family: 'Courier New', monospace;
            color: var(--accent-cyan);
            font-weight: 700;
            letter-spacing: 1px;
            display: inline-block;
            margin: 0.5rem 0;
        }
        
        .event-timeline {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border-light);
            margin-bottom: 2rem;
        }
        
        .event-item {
            display: flex;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            align-items: flex-start;
        }
        
        .event-item:last-child {
            border-bottom: none;
        }
        
        .event-icon {
            background: var(--accent-cyan);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: #0A0A0A;
            font-size: 1.2rem;
            font-weight: 700;
        }
        
        .event-detail h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }
        
        .event-detail p {
            color: #CBD5E1;
            margin-bottom: 0;
            line-height: 1.6;
        }
        
        .bonus-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        
        .bonus-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 2rem;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: 0.3s;
        }
        
        .bonus-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }
        
        .bonus-icon {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        
        .bonus-item h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }
        
        .bonus-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.5;
        }
        
        .steps-section {
            background: linear-gradient(180deg, #0B1A30 0%, #0D1F3C 100%);
            border-radius: var(--radius-lg);
            padding: 3rem;
            border: 1px solid var(--border-light);
            margin: 2rem 0;
        }
        
        .step-block {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
            align-items: flex-start;
        }
        
        .step-block:last-child {
            margin-bottom: 0;
        }
        
        .step-number {
            background: var(--accent-gold);
            color: #0A0A0A;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .step-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 0.4rem;
        }
        
        .step-content p {
            color: #CBD5E1;
            margin-bottom: 0;
            line-height: 1.6;
        }
        
        .faq-section {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border-light);
        }
        
        .faq-item {
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            padding: 1.2rem 0;
        }
        
        .faq-item:last-child {
            border-bottom: none;
        }
        
        .faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-question i {
            transition: 0.3s;
            font-size: 0.9rem;
        }
        
        .faq-answer {
            color: var(--text-muted);
            line-height: 1.6;
            margin-top: 0.5rem;
        }
        
        .cta-section {
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            padding: 4rem 0;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 3rem 0 2rem;
            position: relative;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11, 26, 48, 0.85);
            border-radius: var(--radius-lg);
        }
        
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        
        .cta-inner p {
            color: #CBD5E1;
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }
        
        .main-footer {
            background: #071126;
            border-top: 2px solid rgba(255, 215, 0, 0.2);
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }
        
        .footer-links a {
            display: inline-block;
            margin: 0 12px 8px 0;
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: 0.2s;
        }
        
        .footer-links a:hover {
            color: var(--accent-gold);
        }
        
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-image-panel {
                height: 250px;
                margin-top: 2rem;
            }
            .promo-value {
                font-size: 1.5rem;
            }
            .steps-section {
                padding: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                padding: 1rem 0;
                gap: 0.8rem;
            }
            .nav-links.active-mobile {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .auth-buttons {
                display: flex;
                gap: 8px;
                flex-shrink: 0;
            }
            .btn-login {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
            .btn-signup {
                padding: 7px 16px;
                font-size: 0.85rem;
            }
            .hero-section {
                padding: 2rem 0;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 1rem;
            }
            .btn-primary-glow {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .promo-meta {
                flex-direction: column;
                gap: 1rem;
                align-items: flex-start;
            }
            .bonus-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
            .event-item {
                flex-direction: column;
            }
        }
        
        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.1rem;
            }
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .promo-badge {
                position: static;
                display: inline-block;
                margin-bottom: 0.5rem;
            }
            .promo-card h3 {
                padding-right: 0;
            }
            .steps-section,
            .faq-section {
                padding: 1.5rem;
            }
            .event-timeline {
                padding: 1.5rem;
            }
            .code-display {
                font-size: 0.85rem;
            }
        }