:root {
        --page-vip666-primary-bg: #1a1a2e; /* Nền tối chính */
        --page-vip666-secondary-bg: #2a2a4a; /* Nền tối phụ */
        --page-vip666-accent-color: #e0b040; /* Màu vàng kim (Golden) */
        --page-vip666-text-light: #f0f0f0; /* Chữ sáng */
        --page-vip666-text-dark: #333; /* Chữ tối (dành cho các trường hợp đặc biệt, không dùng ở đây) */
        --page-vip666-button-bg: #e0b040; /* Nền nút vàng kim */
        --page-vip666-button-text: #1a1a2e; /* Chữ nút màu nền chính */
        --page-vip666-border-color: #4a4a6a; /* Màu viền */
        --page-vip666-promo-button-bg: #ff4d4d; /* Màu đỏ cho nút khuyến mãi */
        --page-vip666-promo-button-hover: #ff6666; /* Màu đỏ nhạt hơn khi hover */
    }

    .page-vip666 {
        font-family: 'Arial', sans-serif;
        color: var(--page-vip666-text-light);
        background-color: var(--page-vip666-primary-bg);
        line-height: 1.6;
        overflow-x: hidden;
    }

    .page-vip666-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 15px;
    }

    .page-vip666-section {
        padding: 40px 0;
        text-align: center;
    }

    .page-vip666-section h2 {
        font-size: 2.2em;
        margin-bottom: 20px;
        color: var(--page-vip666-accent-color);
        text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    }

    .page-vip666-section h3 {
        font-size: 1.8em;
        margin-bottom: 15px;
        color: var(--page-vip666-text-light);
    }

    .page-vip666-section p {
        font-size: 1.1em;
        margin-bottom: 20px;
    }

    .page-vip666-link {
        color: var(--page-vip666-accent-color);
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .page-vip666-link:hover {
        color: #ffda6a;
        text-decoration: underline;
    }

    /* Banner Section */
    .page-vip666-hero {
        position: relative;
        background-color: var(--page-vip666-secondary-bg);
        padding: 60px 0 40px;
        overflow: hidden;
    }

    .page-vip666-hero-content {
        position: relative;
        z-index: 2;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        max-width: 800px;
        margin: 0 auto;
    }

    .page-vip666-hero-image {
        width: 100%;
        max-width: 600px; /* Centered product display image */
        height: auto;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
        margin-bottom: 30px;
    }

    .page-vip666-hero h1 {
        font-size: 2.8em;
        color: var(--page-vip666-accent-color);
        margin-bottom: 15px;
        text-shadow: 2px 2px 5px rgba(0,0,0,0.7);
    }

    .page-vip666-hero p {
        font-size: 1.3em;
        margin-bottom: 30px;
        color: var(--page-vip666-text-light);
    }

    .page-vip666-button {
        display: inline-block;
        background-color: var(--page-vip666-button-bg);
        color: var(--page-vip666-button-text);
        padding: 15px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: bold;
        font-size: 1.2em;
        transition: background-color 0.3s ease, transform 0.2s ease;
        border: none;
        cursor: pointer;
    }

    .page-vip666-button:hover {
        background-color: #ffda6a; /* Lighter golden */
        transform: translateY(-2px);
    }

    /* Floating Login Button */
    .page-vip666-floating-button {
        position: fixed;
        bottom: 20px;
        right: 20px;
        z-index: 1000;
        background-color: var(--page-vip666-promo-button-bg);
        color: #fff;
        padding: 12px 25px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: bold;
        font-size: 1.1em;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        transition: background-color 0.3s ease, transform 0.2s ease;
        animation: page-vip666-pulse 2s infinite;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .page-vip666-floating-button:hover {
        background-color: var(--page-vip666-promo-button-hover);
        transform: scale(1.05);
    }

    @keyframes page-vip666-pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.03); }
        100% { transform: scale(1); }
    }

    /* Game Categories */
    .page-vip666-game-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }

    .page-vip666-game-card {
        background-color: var(--page-vip666-secondary-bg);
        border-radius: 10px;
        padding: 20px;
        text-align: center;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        transition: transform 0.3s ease, background-color 0.3s ease;
        border: 1px solid var(--page-vip666-border-color);
    }

    .page-vip666-game-card:hover {
        transform: translateY(-5px);
        background-color: #3a3a5a;
    }

    .page-vip666-game-card img {
        width: 80px;
        height: 80px;
        object-fit: contain;
        margin-bottom: 10px;
    }

    .page-vip666-game-card h3 {
        font-size: 1.2em;
        margin-bottom: 0;
        color: var(--page-vip666-accent-color);
    }

    /* Promotions Section */
    .page-vip666-promo-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-top: 30px;
    }

    .page-vip666-promo-card {
        background-color: var(--page-vip666-secondary-bg);
        border-radius: 10px;
        padding: 25px;
        text-align: left;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        border: 1px solid var(--page-vip666-border-color);
    }

    .page-vip666-promo-card h3 {
        color: var(--page-vip666-accent-color);
        margin-bottom: 10px;
        font-size: 1.5em;
    }

    .page-vip666-promo-card p {
        font-size: 1em;
        margin-bottom: 15px;
    }

    /* How to play/login section */
    .page-vip666-steps {
        display: flex;
        flex-direction: column;
        gap: 20px;
        margin-top: 30px;
    }

    .page-vip666-step-item {
        background-color: var(--page-vip666-secondary-bg);
        border-radius: 10px;
        padding: 20px;
        text-align: left;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        border: 1px solid var(--page-vip666-border-color);
        display: flex;
        align-items: flex-start;
        gap: 15px;
    }

    .page-vip666-step-item .icon {
        font-size: 2em;
        color: var(--page-vip666-accent-color);
        flex-shrink: 0;
    }

    .page-vip666-step-item h3 {
        margin-top: 0;
        color: var(--page-vip666-accent-color);
    }

    /* App Download */
    .page-vip666-app-download {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
        margin-top: 30px;
    }

    .page-vip666-app-image {
        width: 150px;
        height: auto;
        margin-bottom: 10px;
    }

    /* Payment Providers */
    .page-vip666-payment-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
        gap: 15px;
        margin-top: 30px;
        justify-content: center;
    }

    .page-vip666-payment-item {
        background-color: var(--page-vip666-secondary-bg);
        border-radius: 8px;
        padding: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        height: 60px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        border: 1px solid var(--page-vip666-border-color);
    }

    .page-vip666-payment-item img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
    }

    /* FAQ */
    .page-vip666-faq-item {
        background-color: var(--page-vip666-secondary-bg);
        border-radius: 10px;
        margin-bottom: 15px;
        overflow: hidden;
        border: 1px solid var(--page-vip666-border-color);
    }

    .page-vip666-faq-question {
        padding: 18px 25px;
        cursor: pointer;
        background-color: #3a3a5a;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: bold;
        font-size: 1.1em;
        color: var(--page-vip666-text-light);
    }

    .page-vip666-faq-question:hover {
        background-color: #4a4a6a;
    }

    .page-vip666-faq-answer {
        padding: 0 25px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out, padding 0.3s ease-out;
        background-color: var(--page-vip666-secondary-bg);
        text-align: left;
    }

    .page-vip666-faq-answer.active {
        max-height: 200px; /* Adjust as needed */
        padding: 15px 25px;
    }

    .page-vip666-faq-question .arrow {
        transition: transform 0.3s ease;
    }

    .page-vip666-faq-question.active .arrow {
        transform: rotate(90deg);
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
        .page-vip666-hero h1 {
            font-size: 3.5em;
        }
        .page-vip666-hero p {
            font-size: 1.5em;
        }
        .page-vip666-section h2 {
            font-size: 2.8em;
        }
        .page-vip666-game-grid {
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        }
        .page-vip666-promo-grid {
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        }
        .page-vip666-steps {
            flex-direction: row;
            flex-wrap: wrap;
            justify-content: center;
        }
        .page-vip666-step-item {
            width: 48%;
        }
        .page-vip666-app-download {
            flex-direction: row;
            justify-content: center;
            align-items: center;
        }
    }