:root {
            --bg-primary: #0F172A;
            --bg-secondary: #1E293B;
            --bg-accent: #0F172A;
            --brand-primary: #FFD700;
            --brand-secondary: #C5A000;
            --brand-accent: #E11D48;
            --brand-highlight: #FACC15;
            --success: #22C55E;
            --warning: #F59E0B;
            --error: #EF4444;
            --info: #3B82F6;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --text-on-brand: #0F172A;
            --border-primary: #334155;
            --border-secondary: #475569;
            --border-active: #FFD700;
            --font-primary: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            --font-secondary: 'Poppins', sans-serif;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { 
            background-color: var(--bg-primary); 
            color: var(--text-primary); 
            font-family: var(--font-primary); 
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
        }
        header {
            background-color: var(--bg-secondary);
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--border-primary);
        }
        header .logo-area { display: flex; align-items: center; gap: 10px; }
        header img { width: 25px; height: 25px; border-radius: 4px; }
        header strong { font-size: 16px; font-weight: normal; color: var(--text-primary); }
        header .auth-buttons { display: flex; gap: 10px; }
        .btn-login { 
            background: transparent; 
            color: var(--text-primary); 
            border: 1px solid var(--brand-primary); 
            padding: 6px 15px; 
            border-radius: 8px; 
            cursor: pointer; 
            font-family: var(--font-secondary);
            transition: 0.3s;
        }
        .btn-register { 
            background: var(--brand-primary); 
            color: var(--text-on-brand); 
            border: none; 
            padding: 6px 15px; 
            border-radius: 8px; 
            cursor: pointer; 
            font-weight: 600;
            font-family: var(--font-secondary);
            transition: 0.3s;
        }
        .btn-login:hover, .btn-register:hover { opacity: 0.9; transform: translateY(-2px); }
        main { padding: 0 15px 80px 15px; max-width: 1200px; margin: 0 auto; }
        .banner-container { width: 100%; margin-top: 15px; border-radius: 15px; overflow: hidden; }
        .banner-container img { width: 100%; aspect-ratio: 2/1; object-fit: cover; cursor: pointer; }
        .reward-section { 
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            padding: 25px; 
            border-radius: 15px; 
            margin: 20px 0; 
            text-align: center; 
            border: 1px solid var(--border-primary);
        }
        .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-big-reg { 
            background: var(--brand-accent); 
            color: white; 
            padding: 15px 40px; 
            border-radius: 50px; 
            font-size: 18px; 
            font-weight: bold; 
            border: none; 
            cursor: pointer; 
            box-shadow: 0 4px 15px rgba(225, 29, 72, 0.4);
            transition: 0.3s;
        }
        .btn-big-reg:hover { transform: scale(1.05); background: #f92c5a; }
        .intro-card { 
            background: var(--bg-secondary); 
            padding: 20px; 
            border-radius: 15px; 
            margin: 20px 0; 
            border-left: 5px solid var(--brand-primary);
        }
        .intro-card h1 { font-size: 32px; color: var(--brand-primary); margin-bottom: 10px; }
        .intro-card p { color: var(--text-secondary); line-height: 1.8; }
        .section-title { 
            font-size: 22px; 
            margin: 30px 0 15px 0; 
            color: var(--text-primary); 
            display: flex; 
            align-items: center; 
            gap: 10px; 
            border-bottom: 2px solid var(--border-primary);
            padding-bottom: 8px;
        }
        .game-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 12px; 
            margin-bottom: 30px; 
        }
        .game-card { 
            background: var(--bg-secondary); 
            border-radius: 12px; 
            overflow: hidden; 
            text-decoration: none; 
            border: 1px solid var(--border-primary); 
            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; }
        .game-card h3 { 
            padding: 10px; 
            font-size: 14px; 
            text-align: center; 
            color: var(--text-primary); 
            font-weight: 500;
        }
        .payment-grid { 
            display: grid; 
            grid-template-columns: repeat(4, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
        }
        .payment-item { 
            background: var(--bg-secondary); 
            padding: 15px 5px; 
            border-radius: 10px; 
            text-align: center; 
            font-size: 12px; 
            color: var(--text-secondary); 
            border: 1px solid var(--border-primary);
        }
        .payment-item i { display: block; font-size: 20px; color: var(--brand-primary); margin-bottom: 8px; }
        .guidelines-grid { 
            display: grid; 
            grid-template-columns: 1fr; 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .guide-card { 
            background: var(--bg-secondary); 
            padding: 15px; 
            border-radius: 12px; 
            border: 1px solid var(--border-primary); 
        }
        .guide-card h3 { font-size: 16px; color: var(--brand-primary); margin-bottom: 8px; }
        .guide-card p { font-size: 14px; color: var(--text-secondary); }
        .review-grid { 
            display: grid; 
            grid-template-columns: 1fr; 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .review-card { 
            background: var(--bg-secondary); 
            padding: 15px; 
            border-radius: 12px; 
            border: 1px solid var(--border-primary); 
        }
        .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .review-header i { font-size: 24px; color: var(--text-muted); }
        .review-header .user-name { font-weight: bold; font-size: 14px; }
        .review-rating { color: var(--brand-highlight); font-size: 12px; margin-left: auto; }
        .review-content { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; }
        .review-date { font-size: 11px; color: var(--text-muted); text-align: right; }
        .win-record-list { 
            background: var(--bg-secondary); 
            border-radius: 12px; 
            overflow: hidden; 
            margin-bottom: 30px;
        }
        .win-item { 
            display: flex; 
            justify-content: space-between; 
            align-items: center; 
            padding: 12px 15px; 
            border-bottom: 1px solid var(--border-primary); 
            font-size: 13px;
        }
        .win-item:last-child { border-bottom: none; }
        .win-user { color: var(--text-secondary); }
        .win-amount { color: var(--brand-primary); font-weight: bold; }
        .provider-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
        }
        .provider-box { 
            background: linear-gradient(45deg, var(--bg-secondary), var(--border-primary)); 
            padding: 15px; 
            border-radius: 10px; 
            text-align: center; 
            font-weight: bold; 
            color: var(--brand-primary); 
            border: 1px solid var(--brand-primary);
        }
        .faq-section { margin-bottom: 30px; }
        .faq-item { 
            background: var(--bg-secondary); 
            margin-bottom: 10px; 
            border-radius: 10px; 
            overflow: hidden; 
            border: 1px solid var(--border-primary);
        }
        .faq-question { 
            padding: 15px; 
            font-weight: 600; 
            cursor: pointer; 
            display: flex; 
            justify-content: space-between; 
            color: var(--text-primary);
        }
        .faq-answer { padding: 0 15px 15px 15px; color: var(--text-secondary); font-size: 14px; line-height: 1.6; }
        .security-section { 
            background: var(--bg-secondary); 
            padding: 20px; 
            border-radius: 15px; 
            text-align: center; 
            border: 1px solid var(--border-primary);
            margin-bottom: 30px;
        }
        .security-icons { display: flex; justify-content: center; gap: 20px; margin-bottom: 15px; flex-wrap: wrap; }
        .security-icons div { font-size: 13px; color: var(--text-secondary); }
        .security-icons i { display: block; font-size: 24px; color: var(--success); margin-bottom: 5px; }
        .security-notice { font-size: 12px; color: var(--text-muted); margin-top: 15px; }
        .navigator { 
            position: fixed; 
            bottom: 0; 
            left: 0; 
            right: 0; 
            background: var(--bg-secondary); 
            display: flex; 
            justify-content: space-around; 
            align-items: center; 
            padding: 10px 0; 
            border-top: 2px solid var(--border-primary); 
            z-index: 2000; 
            box-shadow: 0 -2px 10px rgba(0,0,0,0.5);
        }
        .nav-item { 
            text-decoration: none; 
            color: var(--text-secondary); 
            text-align: center; 
            font-size: 11px; 
            display: flex; 
            flex-direction: column; 
            gap: 4px;
        }
        .nav-item i { font-size: 18px; }
        footer { 
            background: var(--bg-secondary); 
            padding: 30px 20px; 
            border-top: 2px solid var(--border-primary); 
            text-align: center;
        }
        .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: 13px; }
        .footer-links { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 20px; 
            text-align: left; 
        }
        .footer-links a { color: var(--text-muted); text-decoration: none; font-size: 12px; transition: 0.3s; }
        .footer-links a:hover { color: var(--brand-primary); }
        .copyright { font-size: 12px; color: var(--text-muted); }

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