:root {
            --brand-primary: #FFD700;
            --brand-secondary: #C0C0C0;
            --brand-accent: #E63946;
            --bg-main: #0F0F0F;
            --bg-surface: #1A1A1A;
            --bg-overlay: rgba(0, 0, 0, 0.8);
            --success: #28A745;
            --warning: #FFC107;
            --error: #DC3545;
            --info: #17A2B8;
            --text-primary: #FFFFFF;
            --text-secondary: #B0B0B0;
            --text-disabled: #6C757D;
            --text-highlight: #FFD700;
            --border-default: #333333;
            --border-strong: #FFD700;
            --border-light: #262626;
            --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;
        }
        header {
            background-color: var(--bg-surface);
            border-bottom: 2px solid var(--border-strong);
            padding: 10px 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
        .header-logo img { width: 25px; height: 25px; border-radius: 50%; }
        .header-logo strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 10px; }
        .btn-login { background: transparent; border: 1px solid var(--brand-primary); color: var(--brand-primary); padding: 6px 15px; border-radius: 20px; cursor: pointer; font-size: 14px; transition: 0.3s; }
        .btn-register { background: var(--brand-primary); border: none; color: #000; padding: 6px 15px; border-radius: 20px; cursor: pointer; font-size: 14px; font-weight: 600; transition: 0.3s; }
        .btn-login:hover, .btn-register:hover { opacity: 0.8; transform: scale(1.05); }
        
        main { padding: 15px; max-width: 1200px; margin: 0 auto; }
        .banner-container { width: 100%; margin-bottom: 20px; cursor: pointer; }
        .banner-container img { width: 100%; aspect-ratio: 2/1; object-fit: cover; border-radius: 15px; display: block; }
        
        .reward-section { 
            background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%); 
            border: 1px solid var(--border-strong); 
            border-radius: 20px; 
            padding: 25px; 
            text-align: center; 
            margin-bottom: 25px; 
        }
        .reward-section h2 { color: var(--brand-primary); margin-bottom: 15px; font-size: 24px; }
        .reward-section p { color: var(--text-secondary); margin-bottom: 20px; font-size: 16px; }
        .btn-main-cta { background: var(--brand-accent); color: white; padding: 15px 30px; border-radius: 30px; font-size: 20px; font-weight: bold; border: none; cursor: pointer; text-decoration: none; display: inline-block; box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4); }
        
        .intro-card { 
            background: var(--bg-surface); 
            border-radius: 20px; 
            padding: 30px; 
            text-align: center; 
            border-left: 5px solid var(--brand-primary);
            margin-bottom: 30px;
        }
        .intro-card h1 { font-size: 36px; color: var(--brand-primary); margin-bottom: 15px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; line-height: 1.8; }
        
        .section-title { font-size: 24px; color: var(--brand-primary); margin: 30px 0 20px; display: flex; align-items: center; gap: 10px; }
        .section-title i { font-size: 20px; }
        
        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-bottom: 30px; }
        .game-card { background: var(--bg-surface); border-radius: 15px; overflow: hidden; text-decoration: none; border: 1px solid var(--border-light); transition: 0.3s; }
        .game-card:hover { border-color: var(--brand-primary); transform: translateY(-5px); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
        .game-card h3 { padding: 12px; font-size: 16px; color: var(--text-primary); text-align: center; }

        .payment-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 30px; }
        .payment-item { background: var(--bg-surface); padding: 15px 10px; border-radius: 12px; text-align: center; border: 1px solid var(--border-light); }
        .payment-item i { color: var(--brand-primary); font-size: 24px; margin-bottom: 8px; display: block; }
        .payment-item span { font-size: 12px; color: var(--text-secondary); display: block; }

        .guide-grid { display: grid; grid-template-columns: 1fr; gap: 15px; margin-bottom: 30px; }
        .guide-card { background: var(--bg-surface); padding: 20px; border-radius: 15px; border-bottom: 3px solid var(--brand-primary); }
        .guide-card h3 { color: var(--brand-primary); margin-bottom: 10px; font-size: 18px; }
        .guide-card p { color: var(--text-secondary); font-size: 14px; }

        .review-grid { display: grid; grid-template-columns: 1fr; gap: 15px; margin-bottom: 30px; }
        .review-card { background: var(--bg-surface); padding: 20px; border-radius: 15px; border: 1px solid var(--border-light); }
        .review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
        .review-header i { font-size: 30px; color: var(--brand-secondary); }
        .review-user { font-weight: bold; font-size: 16px; }
        .review-stars { color: var(--warning); font-size: 14px; margin-bottom: 8px; }
        .review-text { color: var(--text-secondary); font-size: 14px; margin-bottom: 10px; }
        .review-date { font-size: 12px; color: var(--text-disabled); text-align: right; }

        .lottery-list { background: var(--bg-surface); border-radius: 15px; overflow: hidden; margin-bottom: 30px; }
        .lottery-item { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; border-bottom: 1px solid var(--border-light); }
        .lottery-item:last-child { border-bottom: none; }
        .lottery-user { font-size: 14px; color: var(--text-secondary); }
        .lottery-game { font-size: 14px; font-weight: 500; }
        .lottery-win { color: var(--brand-primary); font-weight: bold; }
        .lottery-time { font-size: 12px; color: var(--text-disabled); }

        .provider-wall { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 30px; }
        .provider-box { background: linear-gradient(45deg, #1a1a1a, #333); padding: 20px; text-align: center; border-radius: 12px; font-weight: bold; color: var(--brand-primary); border: 1px solid var(--border-default); }

        .faq-section { margin-bottom: 30px; }
        .faq-item { background: var(--bg-surface); margin-bottom: 10px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border-light); }
        .faq-question { padding: 15px; font-weight: 600; cursor: pointer; color: var(--brand-primary); display: flex; justify-content: space-between; }
        .faq-answer { padding: 15px; color: var(--text-secondary); font-size: 14px; border-top: 1px solid var(--border-light); }

        .security-box { 
            background: #111; 
            padding: 25px; 
            border-radius: 20px; 
            text-align: center; 
            border: 1px dashed var(--brand-secondary); 
            margin-bottom: 30px;
        }
        .security-box i { font-size: 40px; color: var(--brand-primary); margin-bottom: 15px; }
        .security-box p { font-size: 14px; color: var(--text-secondary); margin-bottom: 15px; }
        .security-links a { color: var(--brand-primary); text-decoration: none; font-size: 13px; margin: 0 10px; }

        .navigator { 
            position: fixed; bottom: 0; left: 0; right: 0; 
            background: var(--bg-surface); 
            display: flex; justify-content: space-around; 
            padding: 10px 0; border-top: 2px solid var(--brand-primary); 
            z-index: 2000; box-shadow: 0 -5px 15px rgba(0,0,0,0.5);
        }
        .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; }

        footer { 
            background: var(--bg-surface); 
            padding: 30px 15px; 
            border-top: 1px solid var(--border-default); 
            text-align: center; 
            font-family: var(--font-secondary);
            margin-bottom: 70px;
        }
        .footer-contact { margin-bottom: 20px; display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; align-items: center; }
        .footer-contact a { color: var(--text-secondary); text-decoration: none; font-size: 14px; }
        .footer-links { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 25px; 
            text-align: left; 
        }
        .footer-links a { color: var(--text-disabled); text-decoration: none; font-size: 13px; display: block; margin-bottom: 5px; }
        .copyright { color: var(--text-disabled); font-size: 12px; border-top: 1px solid var(--border-light); padding-top: 15px; }

        @media (min-width: 768px) {
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(8, 1fr); }
            .guide-grid { grid-template-columns: repeat(3, 1fr); }
            .review-grid { grid-template-columns: repeat(2, 1fr); }
            .provider-wall { grid-template-columns: repeat(4, 1fr); }
        }