:root {
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-accent: #0f172a;
            --brand-primary: #fbbf24;
            --brand-secondary: #f59e0b;
            --brand-highlight: #ef4444;
            --success: #10b981;
            --warning: #f59e0b;
            --error: #ef4444;
            --info: #3b82f6;
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --text-inverse: #0f172a;
            --border-light: #334155;
            --border-strong: #475569;
            --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-primary);
            color: var(--text-main);
            font-family: var(--font-primary);
            line-height: 1.5;
            overflow-x: hidden;
        }
        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: 1px solid var(--border-light);
        }
        .logo-area { display: flex; align-items: center; gap: 10px; }
        .logo-area img { width: 25px; height: 25px; }
        .logo-area strong { font-size: 16px; font-weight: normal; color: var(--text-main); }
        .auth-buttons { display: flex; gap: 10px; }
        .btn-auth {
            padding: 6px 15px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-family: var(--font-primary);
            font-weight: 500;
            transition: 0.3s;
        }
        .btn-login { background: transparent; color: var(--text-main); border: 1px solid var(--border-strong); }
        .btn-register { background: var(--brand-primary); color: var(--text-inverse); }
        .btn-register:hover { background: var(--brand-secondary); }

        main { padding-bottom: 80px; }
        .banner-container { width: 100%; }
        .banner-container img { 
            width: 100%; 
            aspect-ratio: 2/1; 
            object-fit: cover; 
            cursor: pointer; 
            display: block; 
        }

        .section-container { padding: 20px; max-width: 1200px; margin: 0 auto; }
        .reward-card {
            background: linear-gradient(135deg, var(--brand-secondary), var(--brand-highlight));
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            margin-bottom: 25px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        }
        .reward-card h2 { font-size: 24px; margin-bottom: 15px; color: var(--text-inverse); }
        .reward-card p { color: var(--text-inverse); margin-bottom: 20px; font-weight: 500; }
        .btn-large {
            background: var(--text-main);
            color: var(--text-inverse);
            padding: 15px 40px;
            border-radius: 30px;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            cursor: pointer;
            border: none;
            font-size: 18px;
        }

        .intro-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 25px;
            margin-bottom: 30px;
        }
        .intro-card h1 { font-size: 32px; color: var(--brand-primary); margin-bottom: 15px; }
        .intro-card p { color: var(--text-muted); font-size: 16px; }

        .grid-2 {
            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;
            color: inherit;
            border: 1px solid var(--border-light);
            transition: transform 0.2s;
        }
        .game-card:hover { 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; 
            text-align: center; 
            color: var(--text-main); 
        }

        .payment-section {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-bottom: 30px;
        }
        .payment-item {
            background: var(--bg-secondary);
            padding: 15px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-light);
            font-size: 14px;
            color: var(--text-muted);
        }
        .payment-item i { 
            display: block; 
            color: var(--brand-primary); 
            font-size: 24px; 
            margin-bottom: 8px; 
        }

        .article-list { display: grid; gap: 20px; margin-bottom: 30px; }
        .article-card {
            display: flex;
            background: var(--bg-secondary);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            text-decoration: none;
            color: inherit;
        }
        .article-card img { width: 120px; aspect-ratio: 1/1; object-fit: cover; }
        .article-content { padding: 15px; }
        .article-content h3 { font-size: 18px; margin-bottom: 8px; color: var(--brand-primary); }
        .article-content p { font-size: 14px; color: var(--text-muted); }

        .guideline-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        .guideline-card {
            background: var(--bg-secondary);
            padding: 20px;
            border-radius: 12px;
            border-left: 4px solid var(--brand-primary);
        }
        .guideline-card h3 { margin-bottom: 10px; font-size: 18px; }
        .guideline-card p { font-size: 14px; color: var(--text-muted); }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        .review-card {
            background: var(--bg-secondary);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
        }
        .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .review-header i { font-size: 30px; color: var(--brand-primary); }
        .review-header .name { font-weight: 600; }
        .stars { color: #ffc107; margin-bottom: 10px; }
        .review-body { font-size: 14px; color: var(--text-muted); margin-bottom: 10px; }
        .review-date { font-size: 12px; color: #64748b; }

        .lottery-list {
            background: var(--bg-secondary);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 30px;
            border: 1px solid var(--border-light);
        }
        .lottery-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 14px;
        }
        .lottery-item:last-child { border: none; }
        .win-amount { color: var(--brand-primary); font-weight: 700; }

        .provider-wall {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 30px;
        }
        .provider-item {
            background: var(--brand-primary);
            color: var(--text-inverse);
            padding: 15px;
            text-align: center;
            font-weight: 700;
            border-radius: 8px;
            font-size: 14px;
        }

        .faq-section { margin-bottom: 30px; }
        .faq-item {
            background: var(--bg-secondary);
            margin-bottom: 10px;
            border-radius: 8px;
            overflow: hidden;
        }
        .faq-question {
            padding: 15px;
            cursor: pointer;
            font-weight: 600;
            background: var(--border-light);
            display: block;
        }
        .faq-answer { padding: 15px; font-size: 14px; color: var(--text-muted); line-height: 1.8; }

        .security-banner {
            background: var(--bg-secondary);
            padding: 25px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .security-icons { display: flex; justify-content: center; gap: 20px; margin-bottom: 20px; font-size: 30px; color: var(--brand-primary); }
        .security-text { font-size: 14px; color: var(--text-muted); }

        .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-light);
            z-index: 2000;
        }
        .nav-item {
            text-decoration: none;
            color: var(--text-muted);
            text-align: center;
            font-size: 12px;
            display: flex;
            flex-direction: column;
            gap: 5px;
        }
        .nav-item i { font-size: 20px; }

        footer {
            background: var(--bg-secondary);
            padding: 40px 20px 100px;
            border-top: 1px solid var(--border-light);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 30px;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 14px;
        }
        .copyright {
            text-align: center;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
        }

        h2 { 
            font-size: 24px; 
            margin-bottom: 20px; 
            color: var(--text-main); 
            text-align: center; 
            position: relative;
            padding-bottom: 10px;
        }
        h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--brand-primary);
        }