:root {
            --primary: #FFD700;
            --primary-dark: #B8860B;
            --secondary: #1A1A1A;
            --accent: #FF4500;
            --bg-main: #0F0F0F;
            --bg-surface: #1E1E1E;
            --bg-elevated: #2C2C2C;
            --bg-overlay: rgba(0, 0, 0, 0.8);
            --text-primary: #FFFFFF;
            --text-secondary: #B0B0B0;
            --text-muted: #757575;
            --text-inverse: #000000;
            --success: #00C851;
            --error: #FF3B30;
            --warning: #FFCC00;
            --info: #007AFF;
            --border-subtle: #333333;
            --border-medium: #444444;
            --border-strong: #FFD700;
            --font-primary: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            --font-secondary: 'Roboto', sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
        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);
            padding: 12px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
            box-shadow: 0 4px 10px rgba(0,0,0,0.5);
        }
        header .logo-area { display: flex; align-items: center; gap: 10px; }
        header .logo-area img { width: 25px; height: 25px; object-fit: cover; }
        header .logo-area strong { font-size: 16px; font-weight: normal; color: var(--primary); }
        header .auth-buttons { display: flex; gap: 10px; }
        .btn-auth {
            padding: 8px 16px;
            border-radius: 8px;
            font-family: var(--font-primary);
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            border: none;
            font-size: 14px;
        }
        .btn-login { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
        .btn-register { background: var(--primary); color: var(--text-inverse); }
        .btn-register:hover, .btn-login:hover { opacity: 0.8; transform: scale(1.05); }
        
        main { padding-bottom: 80px; }
        .banner-container { width: 100%; aspect-ratio: 2/1; overflow: hidden; cursor: pointer; }
        .banner-container img { width: 100%; height: 100%; object-fit: cover; }

        .section-container { padding: 20px; max-width: 1200px; margin: 0 auto; }
        .card { background: var(--bg-surface); border-radius: 16px; padding: 20px; margin-bottom: 20px; border: 1px solid var(--border-subtle); }
        
        .reward-section { text-align: center; background: linear-gradient(135deg, var(--bg-surface), var(--bg-elevated)); border: 2px solid var(--primary); }
        .reward-section h2 { color: var(--primary); font-size: 24px; margin-bottom: 10px; }
        .reward-section p { color: var(--text-secondary); margin-bottom: 20px; font-size: 16px; }
        .btn-large {
            background: var(--accent);
            color: white;
            padding: 15px 30px;
            border-radius: 30px;
            font-size: 18px;
            font-weight: bold;
            text-decoration: none;
            display: inline-block;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 69, 0, 0.4);
        }

        .intro-card { text-align: center; border-bottom: 4px solid var(--primary); }
        .intro-card h1 { font-size: 32px; color: var(--primary); margin-bottom: 15px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-top: 15px; }
        .game-item { text-decoration: none; background: var(--bg-elevated); border-radius: 12px; overflow: hidden; transition: 0.3s; border: 1px solid var(--border-subtle); }
        .game-item:hover { transform: translateY(-5px); border-color: var(--primary); }
        .game-item img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-item h3 { font-size: 14px; color: var(--text-primary); padding: 10px; text-align: center; font-weight: 500; }

        .payment-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; text-align: center; }
        .payment-item { background: var(--bg-elevated); padding: 15px 5px; border-radius: 10px; color: var(--text-secondary); font-size: 12px; border: 1px solid var(--border-subtle); }
        .payment-item i { display: block; font-size: 24px; color: var(--primary); margin-bottom: 8px; }

        .guidelines-grid { display: grid; grid-template-columns: 1fr; gap: 15px; }
        .guide-card { background: var(--bg-surface); border-left: 4px solid var(--primary); }
        .guide-card h3 { color: var(--primary); margin-bottom: 8px; font-size: 18px; }
        .guide-card p { color: var(--text-secondary); font-size: 14px; }

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

        .lottery-list { background: var(--bg-surface); border-radius: 12px; overflow: hidden; }
        .lottery-item { display: flex; justify-content: space-between; padding: 12px 15px; border-bottom: 1px solid var(--border-subtle); font-size: 13px; }
        .lottery-item:last-child { border-bottom: none; }
        .lottery-user { color: var(--text-primary); font-weight: 500; }
        .lottery-game { color: var(--text-secondary); }
        .lottery-win { color: var(--primary); font-weight: bold; }
        .lottery-time { color: var(--text-muted); font-size: 11px; }

        .provider-wall { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
        .provider-box { background: var(--bg-elevated); padding: 15px; text-align: center; border-radius: 8px; font-weight: bold; color: var(--primary); border: 1px solid var(--primary); }

        .faq-section { display: grid; grid-template-columns: 1fr; gap: 15px; }
        .faq-card { background: var(--bg-surface); padding: 15px; border-radius: 12px; }
        .faq-card h3 { font-size: 16px; color: var(--primary); margin-bottom: 10px; }
        .faq-card p { font-size: 14px; color: var(--text-secondary); }

        .security-section { text-align: center; background: var(--bg-surface); border: 1px dashed var(--primary); }
        .security-icons { display: flex; justify-content: center; gap: 20px; margin-bottom: 15px; flex-wrap: wrap; }
        .security-icon { color: var(--primary); font-size: 30px; }
        .security-text { font-size: 13px; color: var(--text-secondary); }

        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-surface);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 10px 0;
            border-top: 2px solid var(--primary);
            z-index: 2000;
            box-shadow: 0 -4px 10px 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; transition: 0.3s; }
        .nav-item i { font-size: 20px; margin-bottom: 4px; }
        .nav-item:hover { color: var(--primary); }

        footer {
            background-color: var(--bg-surface);
            padding: 40px 20px 100px 20px;
            border-top: 1px solid var(--border-medium);
            color: var(--text-secondary);
            font-family: var(--font-secondary);
        }
        footer .contact-area { text-align: center; margin-bottom: 30px; }
        footer .contact-area p { margin-bottom: 15px; color: var(--text-primary); font-weight: bold; }
        footer .contact-links { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
        footer .contact-links a { color: var(--primary); text-decoration: none; font-size: 14px; }
        footer .footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 30px; text-align: center; }
        footer .footer-cols a { display: block; color: var(--text-muted); text-decoration: none; font-size: 13px; margin-bottom: 8px; }
        footer .footer-cols a:hover { color: var(--primary); }
        footer .copyright { text-align: center; font-size: 12px; color: var(--text-muted); border-top: 1px solid var(--border-subtle); padding-top: 20px; }
        
        h2 { font-size: 22px; color: var(--text-primary); margin-bottom: 20px; text-align: center; position: relative; }
        h2::after { content: ''; display: block; width: 50px; height: 3px; background: var(--primary); margin: 8px auto; }