:root {
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-accent: #020617;
            --brand-primary: #facc15;
            --brand-secondary: #eab308;
            --brand-highlight: #fbbf24;
            --success: #22c55e;
            --error: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #94a3b8;
            --text-on-brand: #0f172a;
            --border-primary: #334155;
            --border-secondary: #475569;
            --border-highlight: #facc15;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }
        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: 2px solid var(--border-primary);
            padding: 12px 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: var(--text-primary);
        }
        .header-logo img {
            width: 25px;
            height: 25px;
            object-fit: contain;
        }
        .header-logo strong {
            font-size: 16px;
            font-weight: 400;
        }
        .header-auth {
            display: flex;
            gap: 10px;
        }
        .btn-auth {
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            font-family: inherit;
            border: none;
            font-size: 14px;
        }
        .btn-login {
            background-color: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-highlight);
        }
        .btn-register {
            background-color: var(--brand-primary);
            color: var(--text-on-brand);
        }
        .btn-auth:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }
        main {
            padding-bottom: 100px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .banner-container {
            width: 100%;
            aspect-ratio: 2/1;
            overflow: hidden;
            cursor: pointer;
        }
        .banner-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: 0.5s;
        }
        .banner-container:hover img {
            transform: scale(1.02);
        }
        .reward-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-accent));
            margin: 20px;
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            border: 1px solid var(--border-primary);
        }
        .reward-section h2 {
            color: var(--brand-primary);
            font-size: 24px;
            margin-bottom: 15px;
        }
        .reward-section p {
            color: var(--text-secondary);
            margin-bottom: 25px;
            font-size: 16px;
        }
        .btn-main-cta {
            background: linear-gradient(to right, var(--brand-primary), var(--brand-highlight));
            color: var(--text-on-brand);
            padding: 15px 40px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            cursor: pointer;
            border: none;
            box-shadow: 0 4px 15px rgba(250, 204, 21, 0.4);
        }
        .intro-card {
            background-color: var(--bg-secondary);
            margin: 20px;
            padding: 30px;
            border-radius: 20px;
            border-left: 5px solid var(--brand-primary);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        .intro-card h1 {
            font-size: 32px;
            color: var(--brand-primary);
            margin-bottom: 15px;
        }
        .intro-card p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }
        .section-title {
            text-align: center;
            font-size: 24px;
            color: var(--text-primary);
            margin: 40px 0 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--brand-primary);
        }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            padding: 0 20px;
        }
        .game-card {
            background-color: var(--bg-secondary);
            border-radius: 15px;
            overflow: hidden;
            text-decoration: none;
            border: 1px solid var(--border-primary);
            transition: 0.3s;
        }
        .game-card:hover {
            border-color: var(--brand-primary);
            transform: translateY(-5px);
        }
        .game-card img {
            width: 100%;
            aspect-ratio: 1/1;
            object-fit: cover;
            display: block;
        }
        .game-card h3 {
            padding: 12px;
            text-align: center;
            font-size: 16px;
            color: var(--text-primary);
            font-weight: 500;
        }
        .payment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            padding: 0 20px;
        }
        .payment-item {
            background-color: var(--bg-secondary);
            padding: 15px 5px;
            text-align: center;
            border-radius: 12px;
            border: 1px solid var(--border-primary);
            font-size: 12px;
            color: var(--text-secondary);
        }
        .payment-item i {
            display: block;
            font-size: 20px;
            color: var(--brand-primary);
            margin-bottom: 8px;
        }
        .guideline-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 0 20px;
        }
        .guideline-card {
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-primary);
        }
        .guideline-card h3 {
            color: var(--brand-primary);
            margin-bottom: 10px;
            font-size: 18px;
        }
        .guideline-card p {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .review-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 0 20px;
        }
        .review-card {
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid var(--border-primary);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }
        .review-header i {
            font-size: 40px;
            color: var(--text-muted);
        }
        .review-user {
            font-weight: 600;
            color: var(--text-primary);
        }
        .review-stars {
            color: var(--brand-primary);
            font-size: 14px;
            margin-bottom: 10px;
        }
        .review-date {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 10px;
        }
        .win-record-list {
            background-color: var(--bg-secondary);
            margin: 0 20px;
            border-radius: 15px;
            overflow: hidden;
            border: 1px solid var(--border-primary);
        }
        .win-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 20px;
            border-bottom: 1px solid var(--border-primary);
            font-size: 14px;
        }
        .win-item:last-child {
            border-bottom: none;
        }
        .win-user {
            color: var(--text-secondary);
            width: 30%;
        }
        .win-game {
            color: var(--text-primary);
            width: 30%;
            font-weight: 500;
        }
        .win-amount {
            color: var(--success);
            width: 30%;
            text-align: right;
            font-weight: 700;
        }
        .provider-wall {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            padding: 0 20px;
        }
        .provider-item {
            background: linear-gradient(45deg, var(--bg-secondary), var(--bg-accent));
            padding: 20px;
            text-align: center;
            border-radius: 12px;
            border: 1px solid var(--brand-highlight);
            color: var(--brand-primary);
            font-weight: 700;
            font-size: 16px;
        }
        .faq-section {
            padding: 0 20px;
        }
        .faq-item {
            background-color: var(--bg-secondary);
            margin-bottom: 15px;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-primary);
        }
        .faq-item h3 {
            color: var(--brand-primary);
            font-size: 17px;
            margin-bottom: 10px;
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }
        .security-box {
            margin: 20px;
            padding: 30px 20px;
            background-color: var(--bg-accent);
            border-radius: 20px;
            text-align: center;
            border: 1px dashed var(--border-secondary);
        }
        .security-icons {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .security-icon-item i {
            font-size: 30px;
            color: var(--brand-primary);
            margin-bottom: 10px;
        }
        .security-icon-item span {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
        }
        .security-box p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 15px;
        }
        .navigator {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: var(--bg-secondary);
            border-top: 2px solid var(--border-primary);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 10px 0;
            z-index: 2000;
            box-shadow: 0 -5px 20px 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;
            gap: 5px;
            transition: 0.3s;
        }
        .nav-item i {
            font-size: 20px;
        }
        .nav-item:hover {
            color: var(--brand-primary);
        }
        footer {
            background-color: var(--bg-accent);
            padding: 40px 20px 120px;
            text-align: center;
            border-top: 2px solid var(--border-primary);
        }
        .footer-contact {
            margin-bottom: 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
        }
        .contact-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
        }
        .contact-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            transition: 0.3s;
        }
        .contact-links a:hover {
            color: var(--brand-primary);
        }
        .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;
            transition: 0.3s;
        }
        .footer-links a:hover {
            color: var(--text-primary);
        }
        .copyright {
            color: var(--text-muted);
            font-size: 12px;
            margin-top: 20px;
        }
        @media (min-width: 768px) {
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(8, 1fr); }
            .guideline-grid { grid-template-columns: repeat(3, 1fr); }
            .review-grid { grid-template-columns: repeat(3, 1fr); }
            .provider-wall { grid-template-columns: repeat(4, 1fr); }
        }