:root {
            --primary-color: #FFD700;
            --secondary-color: #C0C0C0;
            --accent-color: #FF4500;
            --highlight-color: #FFC107;
            --bg-main: #121212;
            --bg-surface: #1E1E1E;
            --bg-overlay: rgba(0, 0, 0, 0.8);
            --text-primary: #FFFFFF;
            --text-secondary: #B0B0B0;
            --text-muted: #757575;
            --text-inverse: #000000;
            --success: #4CAF50;
            --warning: #FF9800;
            --error: #F44336;
            --info: #2196F3;
            --border-light: #333333;
            --border-medium: #444444;
            --border-strong: #FFD700;
            --font-primary: 'Hind Siliguri', sans-serif;
            --font-secondary: 'Noto Sans Bengali', sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { 
            background-color: var(--bg-main); 
            color: var(--text-primary); 
            font-family: var(--font-primary); 
            line-height: 1.5; 
            overflow-x: hidden; 
        }
        a { text-decoration: none; color: inherit; }

        .header-nav {
            background-color: var(--bg-surface);
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--border-medium);
        }
        .logo-area { display: flex; align-items: center; gap: 10px; }
        .logo-img { width: 25px; height: 25px; border-radius: 50%; }
        .logo-text { font-size: 16px; font-weight: normal; }

        .nav-buttons { display: flex; gap: 10px; }
        .btn-login { 
            background: transparent; 
            color: var(--text-primary); 
            border: 1px solid var(--primary-color); 
            padding: 6px 15px; 
            border-radius: 20px; 
            cursor: pointer; 
            font-family: var(--font-primary);
        }
        .btn-register { 
            background: var(--primary-color); 
            color: var(--text-inverse); 
            border: none; 
            padding: 6px 15px; 
            border-radius: 20px; 
            cursor: pointer; 
            font-weight: 600; 
            font-family: var(--font-primary);
        }

        .main-banner {
            width: 100%;
            aspect-ratio: 2/1;
            cursor: pointer;
            display: block;
        }

        .reward-section {
            background: linear-gradient(45deg, #1e1e1e, #2a2a2a);
            padding: 30px 20px;
            text-align: center;
            border-radius: 0 0 20px 20px;
            margin-bottom: 20px;
            border: 1px solid var(--border-light);
        }
        .reward-text { font-size: 20px; margin-bottom: 20px; color: var(--text-primary); }
        .btn-big-reg {
            background: var(--accent-color);
            color: white;
            padding: 15px 40px;
            font-size: 22px;
            font-weight: bold;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 15px var(--accent-color);
        }

        .intro-card {
            background-color: var(--bg-surface);
            margin: 20px;
            padding: 25px;
            border-radius: 15px;
            border-left: 5px solid var(--primary-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        }
        .intro-card h1 { font-size: 30px; color: var(--primary-color); margin-bottom: 10px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; }

        .section-title { text-align: center; font-size: 24px; margin: 30px 0 20px; color: var(--primary-color); }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            padding: 0 15px;
        }
        .game-card {
            background-color: var(--bg-surface);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: transform 0.2s;
        }
        .game-card:hover { transform: scale(1.03); }
        .game-card img { 
            width: 100%; 
            aspect-ratio: 1/1; 
            object-fit: cover; 
        }
        .game-card h3 { 
            padding: 10px; 
            font-size: 14px; 
            text-align: center; 
            color: var(--text-primary); 
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            padding: 20px;
            background-color: var(--bg-surface);
            margin: 20px;
            border-radius: 15px;
        }
        .payment-item {
            text-align: center;
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 5px;
        }
        .payment-item i { color: var(--primary-color); font-size: 20px; }

        .article-list {
            padding: 0 15px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .article-card {
            background-color: var(--bg-surface);
            display: flex;
            border-radius: 10px;
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .article-card img { width: 100px; height: 100px; object-fit: cover; }
        .article-info { padding: 10px; }
        .article-info h3 { font-size: 16px; margin-bottom: 5px; color: var(--primary-color); }
        .article-info p { font-size: 13px; color: var(--text-secondary); }

        .guideline-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            padding: 15px;
        }
        .guide-item {
            background-color: var(--bg-surface);
            padding: 15px;
            border-radius: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            border: 1px solid var(--border-light);
        }

        .review-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
            padding: 15px;
        }
        .review-card {
            background-color: var(--bg-surface);
            padding: 15px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
        }
        .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .review-header i { color: var(--primary-color); font-size: 24px; }
        .review-user { font-weight: bold; font-size: 14px; }
        .review-stars { color: var(--highlight-color); font-size: 12px; }
        .review-body { font-size: 13px; color: var(--text-secondary); margin-bottom: 5px; }
        .review-date { font-size: 11px; color: var(--text-muted); }

        .lottery-list {
            padding: 15px;
            background-color: var(--bg-surface);
            margin: 15px;
            border-radius: 15px;
            border: 1px solid var(--primary-color);
        }
        .lottery-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 13px;
        }
        .win-amount { color: var(--primary-color); font-weight: bold; }

        .provider-wall {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            padding: 15px;
        }
        .provider-box {
            background: linear-gradient(135deg, #333, #111);
            padding: 15px;
            text-align: center;
            border-radius: 8px;
            font-weight: bold;
            border: 1px solid var(--border-medium);
            color: var(--primary-color);
        }

        .faq-section { padding: 15px; }
        .faq-item {
            background-color: var(--bg-surface);
            margin-bottom: 10px;
            border-radius: 8px;
            overflow: hidden;
        }
        .faq-question { 
            padding: 15px; 
            background-color: #2a2a2a; 
            cursor: pointer; 
            font-weight: bold; 
            font-size: 15px; 
            color: var(--primary-color); 
        }
        .faq-answer { padding: 15px; font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

        .security-footer {
            padding: 20px;
            background-color: #0a0a0a;
            text-align: center;
            border-top: 1px solid var(--border-light);
        }
        .sec-badge { display: flex; justify-content: center; gap: 20px; margin-bottom: 15px; font-size: 12px; color: var(--text-muted); }
        .sec-badge i { color: var(--success); }

        .navigator {
            position: fixed;
            bottom: 0;
            width: 100%;
            background-color: var(--bg-surface);
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
            border-top: 2px solid var(--primary-color);
            z-index: 2000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 11px;
            color: var(--text-secondary);
            gap: 4px;
        }
        .nav-item i { font-size: 20px; color: var(--primary-color); }

        footer {
            background-color: #000;
            padding: 30px 15px 80px;
            border-top: 1px solid var(--border-medium);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 20px;
        }
        .footer-links a { font-size: 12px; color: var(--text-muted); }
        .copyright {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 15px;
        }

        @media (min-width: 768px) {
            .game-grid, .provider-wall { grid-template-columns: repeat(4, 1fr); }
            .guideline-grid { grid-template-columns: repeat(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(8, 1fr); }
        }