:root {
            --primary: #FFD700;
            --primary-hover: #FFC400;
            --secondary: #1A1A1A;
            --accent: #E63946;
            --main-bg: #0F0F0F;
            --surface-bg: #1E1E1E;
            --overlay-bg: rgba(0, 0, 0, 0.8);
            --success: #4CAF50;
            --warning: #FF9800;
            --error: #F44336;
            --info: #2196F3;
            --text-primary: #FFFFFF;
            --text-secondary: #B3B3B3;
            --text-muted: #757575;
            --text-inverse: #000000;
            --border-default: #333333;
            --border-highlight: #FFD700;
            --border-soft: #2A2A2A;
            --font-primary: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            --font-secondary: 'Roboto', sans-serif;
        }

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

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

        header {
            background-color: var(--secondary);
            border-bottom: 2px solid var(--border-highlight);
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 60px;
        }

        header .logo-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        header img {
            width: 25px;
            height: 25px;
            object-fit: cover;
        }

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

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

        .btn {
            padding: 8px 16px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-family: var(--font-primary);
            font-weight: 600;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }

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

        .btn-login:hover {
            background-color: var(--primary);
            color: var(--text-inverse);
        }

        .btn-register {
            background-color: var(--primary);
            color: var(--text-inverse);
        }

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

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 15px;
        }

        .hero-banner {
            width: 100%;
            aspect-ratio: 2/1;
            border-radius: 15px;
            overflow: hidden;
            margin-bottom: 25px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            cursor: pointer;
        }

        .hero-banner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .hero-banner:hover img {
            transform: scale(1.05);
        }

        .reward-section {
            background: linear-gradient(135deg, #1e1e1e 0%, #2a2a2a 100%);
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            border: 1px solid var(--border-highlight);
            margin-bottom: 30px;
        }

        .reward-section h2 {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 15px;
        }

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

        .btn-large {
            background-color: var(--accent);
            color: white;
            padding: 15px 40px;
            font-size: 20px;
            border-radius: 50px;
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4);
        }

        .intro-card {
            background-color: var(--surface-bg);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            margin-bottom: 40px;
            border-left: 5px solid var(--primary);
        }

        .intro-card h1 {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .intro-card p {
            color: var(--text-secondary);
            font-size: 18px;
            line-height: 1.8;
        }

        .section-title {
            font-size: 24px;
            color: var(--text-primary);
            margin-bottom: 20px;
            text-align: center;
            position: relative;
            padding-bottom: 10px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--primary);
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 40px;
        }

        .game-card {
            background-color: var(--surface-bg);
            border-radius: 15px;
            overflow: hidden;
            text-decoration: none;
            transition: 0.3s;
            border: 1px solid var(--border-soft);
        }

        .game-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

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

        .game-card h3 {
            color: var(--text-primary);
            font-size: 16px;
            text-align: center;
            padding: 12px 5px;
            font-weight: 500;
        }

        .payment-section {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-bottom: 40px;
            background-color: var(--surface-bg);
            padding: 20px;
            border-radius: 20px;
        }

        .payment-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 12px;
            text-align: center;
        }

        .payment-item i {
            font-size: 24px;
            color: var(--primary);
        }

        .guideline-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .guide-card {
            background-color: var(--surface-bg);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-soft);
        }

        .guide-card h3 {
            color: var(--primary);
            margin-bottom: 10px;
            font-size: 18px;
        }

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

        .comment-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .comment-card {
            background-color: var(--surface-bg);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-soft);
        }

        .comment-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }

        .comment-header i {
            font-size: 30px;
            color: var(--primary);
        }

        .comment-header .user-info h4 {
            font-size: 16px;
            color: var(--text-primary);
        }

        .comment-header .user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .stars {
            color: #FFD700;
            font-size: 14px;
            margin-bottom: 10px;
        }

        .comment-text {
            color: var(--text-secondary);
            font-size: 14px;
            font-style: italic;
        }

        .lottery-list {
            background-color: var(--surface-bg);
            border-radius: 20px;
            padding: 20px;
            margin-bottom: 40px;
        }

        .lottery-item {
            display: grid;
            grid-template-columns: 1fr 2fr 1fr 1fr;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-soft);
            font-size: 14px;
            text-align: center;
            align-items: center;
        }

        .lottery-item:last-child { border: none; }
        .lottery-item .win-amount { color: var(--success); font-weight: bold; }

        .provider-wall {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 40px;
        }

        .provider-box {
            background: linear-gradient(45deg, #1a1a1a, #333);
            padding: 15px;
            text-align: center;
            border-radius: 10px;
            color: var(--primary);
            font-weight: bold;
            border: 1px solid var(--border-highlight);
        }

        .faq-section {
            margin-bottom: 40px;
        }

        .faq-item {
            background-color: var(--surface-bg);
            margin-bottom: 10px;
            border-radius: 10px;
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }

        .faq-question {
            padding: 15px 20px;
            color: var(--primary);
            font-weight: bold;
            cursor: pointer;
            display: block;
        }

        .faq-answer {
            padding: 0 20px 15px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        .security-section {
            background-color: var(--surface-bg);
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            border: 1px dashed var(--primary);
            margin-bottom: 40px;
        }

        .security-grid {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
        }

        .security-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .security-badge i { color: var(--success); }

        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: var(--secondary);
            border-top: 2px solid var(--border-highlight);
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
            z-index: 1000;
        }

        .nav-item {
            text-decoration: none;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 12px;
            gap: 5px;
        }

        .nav-item i { font-size: 20px; }
        .nav-item:hover { color: var(--primary); }

        footer {
            background-color: var(--secondary);
            padding: 40px 20px 100px 20px;
            text-align: center;
            border-top: 1px solid var(--border-soft);
        }

        footer .contact-row {
            margin-bottom: 30px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            align-items: center;
        }

        footer .contact-row a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
        }

        footer .contact-row a:hover { color: var(--primary); }

        footer .links-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 600px;
            margin: 0 auto 30px auto;
            text-align: left;
        }

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

        footer .links-grid a:hover { color: var(--text-primary); }

        footer .copyright {
            color: var(--text-muted);
            font-size: 12px;
            margin-top: 20px;
        }

        @media (max-width: 768px) {
            .payment-section { grid-template-columns: repeat(2, 1fr); }
            .links-grid { grid-template-columns: repeat(3, 1fr); }
            .lottery-item { grid-template-columns: 1fr 1fr; gap: 5px; }
            .lottery-item span:nth-child(3), .lottery-item span:nth-child(4) { display: block; text-align: left; }
        }