:root {
            --brand-primary: #FFD700;
            --brand-secondary: #C0C0C0;
            --brand-accent: #FF4500;
            --bg-main: #0B0E11;
            --bg-secondary: #1E2329;
            --bg-surface: #2B3139;
            --text-primary: #FFFFFF;
            --text-secondary: #B7B7B7;
            --text-muted: #848E9C;
            --text-highlight: #FFD700;
            --success: #0ECB81;
            --warning: #F0B90B;
            --error: #F6465D;
            --info: #3B82F6;
            --border-light: #474D57;
            --border-medium: #363C44;
            --border-dark: #2B3139;
            --font-primary: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            --font-secondary: 'Roboto', 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-secondary);
            padding: 10px 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-medium);
        }

        .header-left { display: flex; align-items: center; gap: 10px; }
        .logo { width: 25px; height: 25px; border-radius: 4px; }
        .platform-name { font-size: 16px; font-weight: normal; color: var(--text-primary); }

        .header-right { display: flex; gap: 10px; }
        .btn-login { 
            background: transparent; border: 1px solid var(--brand-primary); color: var(--brand-primary); 
            padding: 5px 15px; border-radius: 20px; cursor: pointer; font-family: var(--font-primary);
        }
        .btn-register { 
            background: var(--brand-primary); border: none; color: #000; 
            padding: 5px 15px; border-radius: 20px; cursor: pointer; font-family: var(--font-primary); font-weight: 600;
        }

        main { padding-bottom: 80px; }

        .hero-banner { 
            width: 100%; aspect-ratio: 2/1; cursor: pointer; 
            display: block; object-fit: cover; 
        }

        .reward-section { 
            background: linear-gradient(45deg, var(--bg-surface), var(--bg-secondary));
            margin: 20px 10px; padding: 25px; border-radius: 15px; 
            text-align: center; border: 1px solid var(--border-light);
        }
        .reward-section h2 { color: var(--brand-primary); margin-bottom: 15px; }
        .reward-section p { color: var(--text-secondary); margin-bottom: 20px; }
        .btn-main-action { 
            background: var(--brand-accent); color: white; padding: 15px 30px; 
            border-radius: 30px; text-decoration: none; font-weight: bold; 
            display: inline-block; cursor: pointer; border: none; font-size: 18px;
            box-shadow: 0 4px 15px rgba(255, 69, 0, 0.4);
        }

        .intro-card { 
            background: var(--bg-surface); margin: 20px 10px; padding: 25px; 
            border-radius: 15px; border-left: 5px solid var(--brand-primary); 
        }
        .intro-card h1 { font-size: 36px; color: var(--brand-primary); margin-bottom: 10px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; }

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

        .grid-container { 
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; padding: 0 10px; 
        }
        .game-card { 
            background: var(--bg-surface); border-radius: 12px; overflow: hidden; 
            text-decoration: none; transition: transform 0.2s; border: 1px solid var(--border-medium);
        }
        .game-card:hover { transform: translateY(-5px); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 { 
            padding: 12px; text-align: center; color: var(--text-primary); 
            font-size: 16px; font-weight: 500;
        }

        .payment-section { 
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; padding: 20px 10px; 
            background: var(--bg-secondary); margin-top: 30px;
        }
        .payment-item { 
            background: var(--bg-surface); padding: 15px 5px; border-radius: 10px; 
            text-align: center; font-size: 12px; color: var(--text-secondary); 
            border: 1px solid var(--border-medium);
        }
        .payment-item i { display: block; font-size: 20px; color: var(--brand-primary); margin-bottom: 8px; }

        .article-list { padding: 0 10px; display: flex; flex-direction: column; gap: 15px; }
        .article-card { 
            display: flex; background: var(--bg-surface); border-radius: 12px; overflow: hidden; 
            text-decoration: none; border: 1px solid var(--border-medium);
        }
        .article-card img { width: 100px; height: 100px; object-fit: cover; }
        .article-info { padding: 10px; display: flex; flex-direction: column; justify-content: center; }
        .article-info h3 { font-size: 16px; color: var(--text-primary); margin-bottom: 5px; }
        .article-info p { font-size: 13px; color: var(--text-secondary); }

        .guideline-grid { 
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; padding: 0 10px; 
        }
        .guideline-card { 
            background: var(--bg-surface); padding: 15px; border-radius: 12px; 
            border-top: 3px solid var(--brand-primary); 
        }
        .guideline-card h3 { font-size: 16px; color: var(--brand-primary); margin-bottom: 8px; }
        .guideline-card p { font-size: 13px; color: var(--text-secondary); }

        .review-grid { 
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; padding: 0 10px; 
        }
        .review-card { 
            background: var(--bg-secondary); padding: 15px; border-radius: 12px; 
            border: 1px solid var(--border-medium);
        }
        .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .review-header i { color: var(--brand-primary); font-size: 20px; }
        .username { font-weight: bold; font-size: 14px; }
        .stars { color: var(--warning); font-size: 12px; }
        .review-text { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }
        .review-date { font-size: 11px; color: var(--text-muted); text-align: right; }

        .lottery-list { 
            background: var(--bg-secondary); margin: 20px 10px; padding: 20px; 
            border-radius: 15px; border: 1px solid var(--brand-primary);
        }
        .lottery-item { 
            display: flex; justify-content: space-between; align-items: center; 
            padding: 10px 0; border-bottom: 1px solid var(--border-dark); font-size: 14px;
        }
        .lottery-item:last-child { border: none; }
        .win-amount { color: var(--success); font-weight: bold; }

        .provider-grid { 
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 0 10px; 
        }
        .provider-box { 
            background: linear-gradient(135deg, var(--bg-surface), var(--bg-secondary)); 
            padding: 20px; text-align: center; border-radius: 10px; 
            font-weight: bold; border: 1px solid var(--border-light); color: var(--brand-primary);
        }

        .faq-section { padding: 0 10px; display: flex; flex-direction: column; gap: 15px; }
        .faq-card { background: var(--bg-surface); padding: 20px; border-radius: 12px; }
        .faq-card h3 { font-size: 17px; color: var(--brand-primary); margin-bottom: 10px; }
        .faq-card p { font-size: 14px; color: var(--text-secondary); }

        .security-section { 
            margin: 30px 10px; padding: 20px; background: var(--bg-secondary); 
            border-radius: 15px; text-align: center; border: 1px solid var(--border-medium);
        }
        .security-badges { display: flex; justify-content: center; gap: 20px; margin-bottom: 15px; font-size: 24px; color: var(--brand-primary); }
        .security-badges i { margin: 0 10px; }
        .security-text { font-size: 13px; color: var(--text-muted); }

        .navigator { 
            position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-secondary); 
            display: grid; grid-template-columns: repeat(5, 1fr); 
            border-top: 1px solid var(--border-medium); z-index: 2000; 
        }
        .nav-item { 
            display: flex; flex-direction: column; align-items: center; 
            justify-content: center; padding: 10px 0; text-decoration: none; 
            color: var(--text-secondary); font-size: 12px; 
        }
        .nav-item i { font-size: 20px; margin-bottom: 5px; }

        footer { 
            background: var(--bg-secondary); padding: 30px 15px 120px; 
            border-top: 1px solid var(--border-medium); text-align: center; 
        }
        .footer-links { 
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; 
            margin-bottom: 30px; text-align: left;
        }
        .footer-links a { 
            color: var(--text-muted); text-decoration: none; font-size: 13px; 
            padding: 5px 0; display: block;
        }
        .copyright { color: var(--text-muted); font-size: 13px; border-top: 1px solid var(--border-dark); padding-top: 20px; }

        @media (min-width: 768px) {
            .grid-container { grid-template-columns: repeat(4, 1fr); }
            .guideline-grid { grid-template-columns: repeat(3, 1fr); }
            .review-grid { grid-template-columns: repeat(3, 1fr); }
            .provider-grid { grid-template-columns: repeat(4, 1fr); }
            .footer-links { grid-template-columns: repeat(5, 1fr); }
        }