:root {
            --primary: #FFD700;
            --secondary: #C0C0C0;
            --accent: #FF4500;
            --highlight: #FFEA00;
            --main-bg: #0F0F0F;
            --surface: #1A1A1A;
            --overlay: rgba(0, 0, 0, 0.85);
            --grad-start: #1a1a1a;
            --grad-end: #000000;
            --success: #00C851;
            --warning: #FFB800;
            --error: #FF4444;
            --info: #00BFFF;
            --text-primary: #FFFFFF;
            --text-secondary: #B3B3B3;
            --text-muted: #757575;
            --on-brand: #000000;
            --border-light: #333333;
            --border-medium: #4D4D4D;
            --border-strong: #FFD700;
            --font-primary: 'Hind Siliguri', sans-serif;
            --font-secondary: 'Roboto', sans-serif;
            --font-heading: 'Noto Serif Bengali', serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            background: linear-gradient(to bottom, var(--grad-start), var(--grad-end));
            color: var(--text-primary);
            font-family: var(--font-primary);
            line-height: 1.5;
            overflow-x: hidden;
        }

        header {
            background: var(--surface);
            border-bottom: 2px solid var(--border-strong);
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
        .header-logo img { width: 25px; height: 25px; border-radius: 50%; }
        .header-logo strong { font-size: 16px; font-weight: 400; }

        .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: var(--font-primary);
        }
        .btn-login { background: var(--secondary); color: var(--on-brand); }
        .btn-register { background: var(--primary); color: var(--on-brand); }
        .btn:hover { opacity: 0.9; transform: translateY(-2px); }

        main { max-width: 1200px; margin: 0 auto; padding: 20px; padding-bottom: 100px; }

        .hero-banner {
            width: 100%;
            aspect-ratio: 2/1;
            border-radius: 15px;
            overflow: hidden;
            cursor: pointer;
            margin-bottom: 25px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }
        .hero-banner img { width: 100%; height: 100%; object-fit: cover; }

        .reward-card {
            background: linear-gradient(135deg, var(--accent), #B22222);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            margin-bottom: 30px;
            border: 2px solid var(--highlight);
        }
        .reward-card h2 { font-family: var(--font-heading); font-size: 28px; margin-bottom: 15px; }
        .reward-card p { margin-bottom: 20px; font-size: 18px; color: #fff; }
        .btn-large {
            padding: 15px 40px;
            font-size: 20px;
            background: var(--highlight);
            color: var(--on-brand);
            border-radius: 50px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        .intro-card {
            background: var(--surface);
            padding: 30px;
            border-radius: 20px;
            border-left: 5px solid var(--primary);
            margin-bottom: 40px;
            text-align: center;
        }
        .intro-card h1 { font-family: var(--font-heading); font-size: 32px; color: var(--primary); margin-bottom: 15px; }
        .intro-card p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; }

        .section-title {
            font-family: var(--font-heading);
            font-size: 24px;
            margin: 30px 0 20px;
            text-align: center;
            color: var(--primary);
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 10px auto;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 30px;
        }
        .game-card {
            background: var(--surface);
            border-radius: 15px;
            overflow: hidden;
            text-decoration: none;
            transition: 0.3s;
            border: 1px solid var(--border-light);
        }
        .game-card:hover { border-color: var(--primary); transform: scale(1.02); }
        .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-family: var(--font-primary);
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-bottom: 40px;
        }
        .payment-item {
            background: var(--surface);
            padding: 15px;
            border-radius: 12px;
            text-align: center;
            font-size: 14px;
            border: 1px solid var(--border-medium);
        }
        .payment-item i { display: block; font-size: 24px; color: var(--primary); margin-bottom: 8px; }

        .guideline-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }
        .guideline-card {
            background: var(--surface);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-light);
        }
        .guideline-card h3 { color: var(--primary); margin-bottom: 10px; font-size: 18px; }
        .guideline-card p { color: var(--text-secondary); font-size: 14px; }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }
        .review-card {
            background: var(--surface);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-light);
        }
        .user-info { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .user-info i { color: var(--primary); font-size: 20px; }
        .user-info span { font-weight: 600; }
        .stars { color: var(--highlight); font-size: 12px; margin-bottom: 10px; }
        .review-date { display: block; font-size: 12px; color: var(--text-muted); margin-top: 10px; }

        .lottery-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--surface);
            border-radius: 15px;
            overflow: hidden;
            margin-bottom: 40px;
        }
        .lottery-table th, .lottery-table td {
            padding: 12px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
        }
        .lottery-table th { background: var(--border-medium); color: var(--primary); }
        .win-amount { color: var(--highlight); font-weight: bold; }

        .provider-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-bottom: 40px;
        }
        .provider-item {
            background: linear-gradient(45deg, var(--surface), var(--border-medium));
            padding: 15px;
            border-radius: 10px;
            text-align: center;
            font-weight: bold;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .faq-section { margin-bottom: 40px; }
        .faq-item {
            background: var(--surface);
            margin-bottom: 10px;
            border-radius: 10px;
            overflow: hidden;
        }
        .faq-question {
            padding: 15px;
            background: var(--border-medium);
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
        }
        .faq-answer { padding: 15px; color: var(--text-secondary); font-size: 14px; line-height: 1.6; }

        .security-section {
            background: var(--surface);
            padding: 25px;
            border-radius: 20px;
            text-align: center;
            border: 1px dashed var(--primary);
        }
        .security-icons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 15px;
            font-size: 30px;
            color: var(--primary);
        }
        .security-text { font-size: 14px; color: var(--text-secondary); }

        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--surface);
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
            border-top: 2px solid var(--primary);
            z-index: 2000;
        }
        .nav-item {
            text-decoration: none;
            color: var(--text-secondary);
            text-align: center;
            font-size: 12px;
            flex: 1;
        }
        .nav-item i { display: block; font-size: 20px; margin-bottom: 4px; }

        footer {
            background: var(--surface);
            padding: 40px 20px 120px;
            border-top: 1px solid var(--border-light);
            text-align: center;
        }
        .footer-contact {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-bottom: 30px;
        }
        .footer-contact a { color: var(--primary); text-decoration: none; font-size: 14px; }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
            text-align: left;
        }
        .footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 13px; }
        .copyright { font-size: 13px; color: var(--text-muted); }

        @media (max-width: 600px) {
            .payment-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-links { grid-template-columns: repeat(2, 1fr); }
        }