:root {
            --primary: #FFD700;
            --primary-light: #FFE44D;
            --primary-dark: #B8860B;
            --secondary: #D2042D;
            --accent: #00C2FF;
            --bg-main: #0B0E11;
            --bg-surface: #1E2329;
            --bg-elevated: #2B3139;
            --text-primary: #FFFFFF;
            --text-secondary: #B7BDC6;
            --text-tertiary: #848E9C;
            --border-default: #373D48;
            --success: #0ECB81;
            --font-main: 'Be Vietnam Pro', sans-serif;
            --font-display: 'Montserrat', sans-serif;
        }

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

        body {
            background-color: var(--bg-main);
            color: var(--text-primary);
            font-family: var(--font-main);
            line-height: 1.5;
            overflow-x: hidden;
            padding-bottom: 70px;
        }

        header {
            background-color: var(--bg-surface);
            border-bottom: 1px solid var(--border-default);
            padding: 12px 16px;
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        header .logo-box {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--text-primary);
        }

        header .logo-box img {
            width: 25px;
            height: 25px;
            object-fit: contain;
        }

        header .logo-box strong {
            font-size: 16px;
            font-weight: 400;
            color: var(--primary);
            font-family: var(--font-display);
        }

        header .auth-buttons {
            display: flex;
            gap: 10px;
        }

        .btn {
            padding: 8px 16px;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            font-size: 14px;
            transition: opacity 0.2s;
        }

        .btn-login {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-default);
        }

        .btn-register {
            background: var(--primary);
            color: #000;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 10px;
        }

        .banner-container {
            width: 100%;
            aspect-ratio: 2 / 1;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 20px;
            cursor: pointer;
        }

        .banner-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .jackpot-box {
            background: linear-gradient(135deg, #1E2329 0%, #0B0E11 100%);
            border: 1px solid var(--primary);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            margin-bottom: 25px;
            position: relative;
            overflow: hidden;
        }

        .jackpot-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,215,0,0.1) 0%, transparent 70%);
            animation: rotate 10s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .jackpot-title {
            color: var(--primary);
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .jackpot-amount {
            font-family: var(--font-display);
            font-size: 32px;
            color: var(--primary);
            font-weight: 800;
            text-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
        }

        .intro-section {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 25px;
            border-left: 4px solid var(--primary);
        }

        .intro-section h1 {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .intro-section p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .section-title {
            font-size: 18px;
            font-weight: 700;
            margin: 20px 0 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
        }

        .section-title::before {
            content: '';
            width: 4px;
            height: 18px;
            background: var(--primary);
            border-radius: 2px;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 25px;
        }

        .game-card {
            background: var(--bg-surface);
            border-radius: 8px;
            overflow: hidden;
            text-decoration: none;
            border: 1px solid var(--border-default);
            transition: transform 0.2s;
        }

        .game-card:active {
            transform: scale(0.98);
        }

        .game-card img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
            display: block;
        }

        .game-card h3 {
            padding: 8px;
            font-size: 13px;
            color: var(--text-primary);
            text-align: center;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-bottom: 25px;
        }

        .payment-item {
            background: var(--bg-elevated);
            padding: 10px 5px;
            border-radius: 8px;
            text-align: center;
            font-size: 10px;
            color: var(--text-secondary);
        }

        .payment-item i {
            display: block;
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .guide-section {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
            margin-bottom: 25px;
        }

        .guide-card {
            background: var(--bg-surface);
            padding: 15px;
            border-radius: 12px;
        }

        .guide-card h2 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .guide-card p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .lottery-box {
            background: var(--bg-surface);
            border-radius: 12px;
            padding: 15px;
            margin-bottom: 25px;
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .lottery-content {
            animation: scrollUp 20s linear infinite;
        }

        @keyframes scrollUp {
            0% { transform: translateY(0); }
            100% { transform: translateY(-100%); }
        }

        .lottery-item {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-default);
            font-size: 12px;
        }

        .lottery-user { color: var(--accent); }
        .lottery-amount { color: var(--success); font-weight: bold; }

        .providers-wall {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 25px;
        }

        .provider-tag {
            background: var(--bg-elevated);
            padding: 12px;
            text-align: center;
            border-radius: 6px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--border-default);
        }

        .review-grid {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 25px;
        }

        .review-card {
            background: var(--bg-surface);
            padding: 15px;
            border-radius: 12px;
            border: 1px solid var(--border-default);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .review-header i {
            font-size: 24px;
            color: var(--text-tertiary);
        }

        .review-info h3 {
            font-size: 14px;
            margin: 0;
        }

        .stars {
            color: var(--primary);
            font-size: 12px;
        }

        .faq-section {
            margin-bottom: 25px;
        }

        .faq-item {
            background: var(--bg-surface);
            margin-bottom: 10px;
            border-radius: 8px;
            padding: 15px;
        }

        .faq-item h2 {
            font-size: 15px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .faq-item p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .security-section {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
            margin-bottom: 25px;
        }

        .security-icons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 15px;
            font-size: 24px;
            color: var(--primary);
        }

        .security-section p {
            font-size: 12px;
            color: var(--text-tertiary);
        }

        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-surface);
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
            border-top: 1px solid var(--border-default);
            z-index: 1000;
        }

        .nav-item {
            text-decoration: none;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 11px;
            gap: 4px;
        }

        .nav-item i {
            font-size: 18px;
        }

        .nav-item:nth-child(3) {
            color: var(--primary);
            transform: translateY(-5px);
        }

        footer {
            background: var(--bg-surface);
            padding: 30px 16px;
            margin-top: 20px;
            border-top: 1px solid var(--border-default);
        }

        footer .contact-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 25px;
        }

        footer .contact-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        footer .links-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 25px;
        }

        footer .links-grid a {
            color: var(--text-tertiary);
            text-decoration: none;
            font-size: 12px;
        }

        footer .copyright {
            text-align: center;
            font-size: 11px;
            color: var(--text-disabled);
            padding-top: 20px;
            border-top: 1px solid var(--border-default);
        }

        @media (min-width: 768px) {
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .guide-section { grid-template-columns: repeat(2, 1fr); }
            .payment-grid { grid-template-columns: repeat(8, 1fr); }
            .providers-wall { grid-template-columns: repeat(4, 1fr); }
            .review-grid { grid-template-columns: repeat(2, 1fr); flex-direction: row; flex-wrap: wrap; }
            .review-card { width: calc(50% - 8px); }
        }