:root {
            --primary: #FFD700;
            --secondary: #C0C0C0;
            --accent: #FF4500;
            --bg-main: #0F0F0F;
            --bg-surface: #1A1A1A;
            --bg-elevated: #2C2C2C;
            --text-primary: #FFFFFF;
            --text-secondary: #B0B0B0;
            --text-muted: #757575;
            --text-highlight: #FFD700;
            --success: #00C851;
            --error: #FF4444;
            --warning: #FFBB33;
            --info: #007AFF;
            --border-default: #333333;
            --border-strong: #444444;
            --border-highlight: #FFD700;
            --font-primary: 'Hind Siliguri', sans-serif;
            --font-secondary: 'Roboto', sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            background-color: var(--bg-main);
            color: var(--text-primary);
            font-family: var(--font-primary);
            line-height: 1.5;
            padding-bottom: 80px;
        }

        header {
            background-color: var(--bg-surface);
            border-bottom: 1px solid var(--border-default);
            padding: 10px 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        header .logo-section {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        header .logo-section img {
            width: 25px;
            height: 25px;
            border-radius: 4px;
        }

        header .logo-section strong {
            font-size: 16px;
            font-weight: normal;
            color: var(--text-primary);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 14px;
            font-family: var(--font-primary);
        }

        .btn-register {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #000;
            padding: 6px 14px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 14px;
            font-family: var(--font-primary);
            font-weight: 600;
        }

        main {
            max-width: 600px;
            margin: 0 auto;
            padding: 0 12px;
        }

        .hero-banner {
            width: 100%;
            aspect-ratio: 2/1;
            border-radius: 12px;
            overflow: hidden;
            margin: 12px 0;
            cursor: pointer;
            border: 1px solid var(--border-default);
        }

        .hero-banner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .reward-section {
            background: linear-gradient(135deg, #2C2C2C 0%, #1A1A1A 100%);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            margin: 16px 0;
            border: 1px solid var(--border-strong);
        }

        .reward-section h2 {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 12px;
        }

        .reward-section p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 16px;
        }

        .btn-big-register {
            background: linear-gradient(to right, var(--primary), var(--warning));
            color: #000;
            font-size: 18px;
            font-weight: bold;
            padding: 14px 28px;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            width: 100%;
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
        }

        .intro-card {
            background: var(--bg-surface);
            border-radius: 16px;
            padding: 20px;
            margin: 16px 0;
            border-left: 4px solid var(--primary);
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        }

        .intro-card h1 {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .intro-card p {
            color: var(--text-secondary);
            font-size: 15px;
        }

        .section-title {
            font-size: 20px;
            color: var(--text-primary);
            margin: 24px 0 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title::before {
            content: "";
            width: 4px;
            height: 20px;
            background: var(--primary);
            display: inline-block;
            border-radius: 2px;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 24px;
        }

        .game-card {
            background: var(--bg-surface);
            border-radius: 12px;
            overflow: hidden;
            text-decoration: none;
            border: 1px solid var(--border-default);
            transition: transform 0.2s;
        }

        .game-card:active {
            transform: scale(0.96);
        }

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

        .game-card h3 {
            color: var(--text-primary);
            font-size: 14px;
            text-align: center;
            padding: 10px 5px;
            font-weight: 500;
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-bottom: 24px;
        }

        .payment-item {
            background: var(--bg-elevated);
            border-radius: 8px;
            padding: 12px 5px;
            text-align: center;
            font-size: 12px;
            color: var(--text-secondary);
            border: 1px solid var(--border-default);
        }

        .payment-item i {
            display: block;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 6px;
        }

        .guide-section {
            display: grid;
            gap: 16px;
            margin-bottom: 24px;
        }

        .guide-item {
            background: var(--bg-surface);
            padding: 16px;
            border-radius: 12px;
            border: 1px solid var(--border-default);
        }

        .guide-item h3 {
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 8px;
        }

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

        .review-grid {
            display: grid;
            gap: 16px;
            margin-bottom: 24px;
        }

        .review-card {
            background: var(--bg-surface);
            padding: 16px;
            border-radius: 12px;
            border: 1px solid var(--border-default);
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }

        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .user-info i {
            font-size: 24px;
            color: var(--secondary);
        }

        .username {
            font-weight: bold;
            font-size: 14px;
        }

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

        .review-text {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 10px;
        }

        .review-date {
            font-size: 12px;
            color: var(--text-muted);
            text-align: right;
        }

        .lottery-list {
            background: var(--bg-surface);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-default);
            margin-bottom: 24px;
        }

        .lottery-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-default);
            font-size: 13px;
        }

        .lottery-item:last-child {
            border-bottom: none;
        }

        .lottery-user {
            color: var(--text-primary);
            font-weight: 500;
        }

        .lottery-game {
            color: var(--text-muted);
        }

        .lottery-amount {
            color: var(--primary);
            font-weight: bold;
        }

        .provider-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 24px;
        }

        .provider-item {
            background: var(--bg-elevated);
            padding: 15px;
            border-radius: 8px;
            text-align: center;
            font-weight: bold;
            color: var(--primary);
            border: 1px solid var(--border-strong);
            font-size: 14px;
        }

        .faq-section {
            display: grid;
            gap: 12px;
            margin-bottom: 24px;
        }

        .faq-item {
            background: var(--bg-surface);
            padding: 16px;
            border-radius: 12px;
            border: 1px solid var(--border-default);
        }

        .faq-item h3 {
            color: var(--primary);
            font-size: 15px;
            margin-bottom: 8px;
        }

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

        .security-box {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid var(--border-strong);
            margin-bottom: 24px;
        }

        .security-box i {
            font-size: 40px;
            color: var(--success);
            margin-bottom: 15px;
        }

        .security-box p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }

        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            height: 65px;
            padding: 0 10px;
            z-index: 2000;
        }

        .nav-item {
            text-decoration: none;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-secondary);
            font-size: 11px;
            transition: color 0.2s;
        }

        .nav-item i {
            font-size: 20px;
        }

        .nav-item:hover {
            color: var(--primary);
        }

        footer {
            background-color: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            padding: 30px 16px 100px;
            text-align: center;
        }

        footer .contact-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-bottom: 25px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        footer .contact-row a {
            color: var(--primary);
            text-decoration: none;
        }

        footer .link-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
            text-align: left;
        }

        footer .link-grid a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 13px;
            display: block;
        }

        footer .copyright {
            color: var(--text-muted);
            font-size: 12px;
            line-height: 1.6;
        }