:root {
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-accent: #111827;
            --brand-primary: #facc15;
            --brand-secondary: #eab308;
            --brand-highlight: #fbbf24;
            --success: #22c55e;
            --error: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
            --text-primary: #ffffff;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --text-inverse: #0f172a;
            --border-primary: #334155;
            --border-secondary: #475569;
            --border-highlight: #facc15;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-family: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            line-height: 1.5;
            overflow-x: hidden;
        }
        header {
            background-color: var(--bg-secondary);
            border-bottom: 1px solid var(--border-primary);
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .logo-container { display: flex; align-items: center; gap: 8px; }
        .logo-container img { width: 25px; height: 25px; object-fit: cover; }
        .logo-container strong { font-size: 16px; font-weight: normal; color: var(--text-primary); }
        .auth-buttons { display: flex; gap: 10px; }
        .btn {
            padding: 8px 16px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: 0.3s;
            border: none;
            font-family: inherit;
        }
        .btn-login { background: transparent; color: var(--brand-primary); border: 1px solid var(--brand-primary); }
        .btn-register { background: var(--brand-primary); color: var(--text-inverse); }
        .btn:hover { opacity: 0.9; transform: translateY(-1px); }
        main { max-width: 1200px; margin: 0 auto; padding: 20px; padding-bottom: 100px; }
        .banner-container { margin-bottom: 20px; }
        .banner-container img { 
            width: 100%; 
            aspect-ratio: 2/1; 
            object-fit: cover; 
            border-radius: 16px; 
            cursor: pointer; 
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
        }
        .reward-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-accent));
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            border: 2px solid var(--brand-primary);
            margin-bottom: 30px;
        }
        .reward-section h2 { color: var(--brand-primary); font-size: 24px; margin-bottom: 15px; }
        .reward-section p { color: var(--text-secondary); margin-bottom: 20px; }
        .btn-large { 
            background: var(--brand-primary); 
            color: var(--text-inverse); 
            padding: 15px 40px; 
            font-size: 18px; 
            border-radius: 50px; 
            text-decoration: none; 
            display: inline-block; 
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(250, 204, 21, 0.4);
        }
        .intro-card {
            background: var(--bg-secondary);
            padding: 25px;
            border-radius: 16px;
            border-left: 5px solid var(--brand-primary);
            margin-bottom: 30px;
        }
        .intro-card h1 { font-size: 30px; color: var(--brand-primary); margin-bottom: 10px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; }
        .section-title { 
            font-size: 24px; 
            margin: 30px 0 20px; 
            text-align: center; 
            color: var(--text-primary); 
            position: relative; 
            padding-bottom: 10px;
        }
        .section-title::after { 
            content: ''; 
            position: absolute; 
            bottom: 0; 
            left: 50%; 
            transform: translateX(-50%); 
            width: 60px; 
            height: 3px; 
            background: var(--brand-primary); 
        }
        .game-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .game-card { 
            background: var(--bg-secondary); 
            border-radius: 12px; 
            overflow: hidden; 
            text-decoration: none; 
            transition: 0.3s; 
            border: 1px solid var(--border-primary);
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--brand-primary); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { 
            padding: 12px; 
            font-size: 16px; 
            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-accent); 
            padding: 15px; 
            border-radius: 10px; 
            text-align: center; 
            border: 1px solid var(--border-primary);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .payment-item i { color: var(--brand-primary); font-size: 20px; }
        .guidelines { 
            display: grid; 
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
            gap: 20px; 
            margin-bottom: 30px; 
        }
        .guide-card { 
            background: var(--bg-secondary); 
            padding: 20px; 
            border-radius: 12px; 
            border: 1px solid var(--border-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: repeat(auto-fit, minmax(280px, 1fr)); 
            gap: 20px; 
            margin-bottom: 30px; 
        }
        .review-card { 
            background: var(--bg-accent); 
            padding: 20px; 
            border-radius: 16px; 
            border: 1px solid var(--border-secondary); 
        }
        .user-info { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
        .user-info i { font-size: 30px; color: var(--brand-primary); }
        .user-info .name { font-weight: bold; }
        .stars { color: var(--brand-highlight); font-size: 14px; margin-bottom: 10px; }
        .review-text { color: var(--text-secondary); font-size: 14px; font-style: italic; }
        .review-date { font-size: 12px; color: var(--text-muted); margin-top: 10px; display: block; }
        .win-records { 
            background: var(--bg-secondary); 
            border-radius: 16px; 
            padding: 20px; 
            margin-bottom: 30px; 
        }
        .win-row { 
            display: grid; 
            grid-template-columns: 1fr 1fr 1fr 1fr; 
            padding: 12px 0; 
            border-bottom: 1px solid var(--border-primary); 
            font-size: 14px; 
            text-align: center;
        }
        .win-row:last-child { border-bottom: none; }
        .win-row span:nth-child(3) { color: var(--success); font-weight: bold; }
        .provider-wall { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
        }
        .provider-item { 
            background: linear-gradient(45deg, var(--bg-secondary), var(--bg-accent)); 
            padding: 15px; 
            text-align: center; 
            border-radius: 8px; 
            border: 1px solid var(--brand-primary); 
            color: var(--brand-primary); 
            font-weight: bold;
        }
        .faq-section { margin-bottom: 30px; }
        .faq-item { 
            background: var(--bg-secondary); 
            margin-bottom: 10px; 
            border-radius: 8px; 
            overflow: hidden; 
            border: 1px solid var(--border-primary);
        }
        .faq-question { 
            padding: 15px; 
            font-weight: bold; 
            cursor: pointer; 
            background: var(--bg-accent); 
            color: var(--brand-primary); 
            display: flex; 
            justify-content: space-between;
        }
        .faq-answer { padding: 15px; color: var(--text-secondary); font-size: 14px; line-height: 1.6; }
        .security-section { 
            background: var(--bg-accent); 
            padding: 25px; 
            border-radius: 16px; 
            text-align: center; 
            border: 1px dashed var(--border-secondary); 
            margin-bottom: 30px;
        }
        .security-icons { 
            display: flex; 
            justify-content: center; 
            gap: 20px; 
            flex-wrap: wrap; 
            margin-bottom: 15px; 
        }
        .security-icons i { font-size: 24px; color: var(--success); }
        .security-text { color: var(--text-muted); font-size: 14px; }
        .navigator { 
            position: fixed; 
            bottom: 0; 
            left: 0; 
            right: 0; 
            background: var(--bg-secondary); 
            display: flex; 
            justify-content: space-around; 
            padding: 10px 0; 
            border-top: 1px solid var(--border-primary); 
            z-index: 2000; 
        }
        .nav-item { 
            text-decoration: none; 
            color: var(--text-secondary); 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            font-size: 12px; 
            gap: 4px; 
        }
        .nav-item i { font-size: 20px; }
        footer { 
            background: var(--bg-accent); 
            padding: 40px 20px; 
            border-top: 1px solid var(--border-primary); 
            text-align: center; 
        }
        .footer-contact { margin-bottom: 30px; display: flex; justify-content: center; align-items: center; gap: 15px; flex-wrap: wrap; }
        .footer-contact a { color: var(--brand-primary); text-decoration: none; font-size: 14px; }
        .footer-links { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            text-align: left; 
            max-width: 600px; 
            margin: 0 auto 30px; 
        }
        .footer-links a { color: var(--text-muted); text-decoration: none; font-size: 13px; transition: 0.3s; }
        .footer-links a:hover { color: var(--brand-primary); }
        .copyright { color: var(--text-muted); font-size: 13px; border-top: 1px solid var(--border-primary); padding-top: 20px; }
        @media (max-width: 600px) {
            .payment-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-links { grid-template-columns: repeat(2, 1fr); }
        }