:root {
        --primary-color: #E60000; /* Đỏ mạnh */
        --secondary-color: #FFD700; /* Vàng */
        --accent-color: #007BFF; /* Xanh dương */
        --dark-bg: #1a1a1a; /* Nền tối */
        --light-text: #f0f0f0; /* Chữ sáng */
        --gray-text: #cccccc; /* Chữ xám */
        --border-color: #444; /* Viền */
        --card-bg: #2a2a2a; /* Nền thẻ */
    }

    /* Base styles for the page */
    .page-6bbet {
        font-family: 'Arial', sans-serif;
        color: var(--light-text);
        background-color: var(--dark-bg);
        line-height: 1.6;
        padding-bottom: 80px; /* Space for floating buttons */
    }

    .page-6bbet__section {
        padding: 40px 20px;
        max-width: 1200px;
        margin: 0 auto;
        text-align: center;
    }

    .page-6bbet__section--dark {
        background-color: #222;
    }

    .page-6bbet__title {
        color: var(--primary-color);
        font-size: 2.5em;
        margin-bottom: 20px;
        text-transform: uppercase;
        font-weight: bold;
    }

    .page-6bbet__subtitle {
        color: var(--secondary-color);
        font-size: 1.8em;
        margin-bottom: 15px;
    }

    .page-6bbet__text {
        font-size: 1.1em;
        margin-bottom: 20px;
        color: var(--gray-text);
    }

    /* Hero Section */
    .page-6bbet__hero-section {
        position: relative;
        overflow: hidden;
        padding-top: 10px; /* Small offset, assuming body has padding-top from shared.css */
        padding-bottom: 60px;
        background: linear-gradient(135deg, #1a1a1a, #333333);
    }

    .page-6bbet__hero-background {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        top: 0;
        left: 0;
        z-index: 1;
        opacity: 0.4;
    }

    .page-6bbet__hero-content {
        position: relative;
        z-index: 2;
        padding: 20px;
        text-align: center;
        max-width: 900px;
        margin: 0 auto;
    }

    .page-6bbet__hero-title {
        font-size: 3.5em;
        color: var(--primary-color);
        margin-bottom: 15px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
        line-height: 1.2;
    }

    .page-6bbet__hero-description {
        font-size: 1.4em;
        color: var(--light-text);
        margin-bottom: 30px;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .page-6bbet__hero-button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--light-text);
        padding: 15px 30px;
        border-radius: 5px;
        text-decoration: none;
        font-size: 1.2em;
        font-weight: bold;
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: none;
        cursor: pointer;
    }

    .page-6bbet__hero-button:hover {
        background-color: #cc0000;
        transform: translateY(-3px);
    }

    /* Floating Buttons */
    .page-6bbet__floating-buttons {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        display: flex;
        justify-content: space-around;
        padding: 10px 0;
        background-color: rgba(0, 0, 0, 0.9);
        border-top: 1px solid var(--border-color);
        z-index: 1000;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.5);
    }

    .page-6bbet__floating-button {
        flex: 1;
        text-align: center;
        padding: 12px 0;
        margin: 0 5px;
        border-radius: 8px;
        font-size: 1.1em;
        font-weight: bold;
        text-decoration: none;
        color: var(--light-text);
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: none;
        cursor: pointer;
    }

    .page-6bbet__floating-button--register {
        background-color: var(--primary-color);
    }

    .page-6bbet__floating-button--register:hover {
        background-color: #cc0000;
        transform: translateY(-2px);
    }

    .page-6bbet__floating-button--login {
        background-color: var(--accent-color);
    }

    .page-6bbet__floating-button--login:hover {
        background-color: #0056b3;
        transform: translateY(-2px);
    }

    /* Product Gallery */
    .page-6bbet__product-gallery {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-top: 40px;
    }

    .page-6bbet__product-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        text-align: center;
        display: flex;
        flex-direction: column;
    }

    .page-6bbet__product-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-6bbet__product-image-wrapper {
        width: 100%;
        overflow: hidden;
        position: relative;
        padding-top: 66.66%; /* 3:2 aspect ratio (e.g., 600x400) */
        box-sizing: border-box; /* Crucial for responsive images */
    }

    .page-6bbet__product-image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        max-width: 100%; /* Important for responsiveness */
        height: auto; /* Important for responsiveness */
    }

    .page-6bbet__product-content {
        padding: 20px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }

    .page-6bbet__product-name {
        font-size: 1.5em;
        color: var(--secondary-color);
        margin-bottom: 10px;
        font-weight: bold;
    }

    .page-6bbet__product-description {
        font-size: 0.95em;
        color: var(--gray-text);
        margin-bottom: 15px;
        flex-grow: 1;
    }

    .page-6bbet__product-button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--light-text);
        padding: 10px 20px;
        border-radius: 5px;
        text-decoration: none;
        font-size: 1em;
        font-weight: bold;
        transition: background-color 0.3s ease;
        border: none;
        cursor: pointer;
        margin-top: auto; /* Push button to bottom */
    }

    .page-6bbet__product-button:hover {
        background-color: #cc0000;
    }

    /* Promotions Section */
    .page-6bbet__promo-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 25px;
        margin-top: 40px;
    }

    .page-6bbet__promo-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        text-align: left;
        display: flex;
        flex-direction: column;
    }

    .page-6bbet__promo-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-6bbet__promo-image-wrapper {
        width: 100%;
        overflow: hidden;
        position: relative;
        padding-top: 56.25%; /* 16:9 aspect ratio (e.g., 800x450) */
        box-sizing: border-box; /* Crucial for responsive images */
    }

    .page-6bbet__promo-image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        max-width: 100%; /* Important for responsiveness */
        height: auto; /* Important for responsiveness */
    }

    .page-6bbet__promo-content {
        padding: 20px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .page-6bbet__promo-title {
        font-size: 1.6em;
        color: var(--primary-color);
        margin-bottom: 10px;
        font-weight: bold;
    }

    .page-6bbet__promo-description {
        font-size: 1em;
        color: var(--gray-text);
        margin-bottom: 15px;
        flex-grow: 1;
    }

    .page-6bbet__promo-date {
        font-size: 0.9em;
        color: var(--secondary-color);
        margin-top: 10px;
    }

    /* Why Choose Us Section */
    .page-6bbet__features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
        margin-top: 40px;
    }

    .page-6bbet__feature-item {
        background-color: var(--card-bg);
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-6bbet__feature-item:hover {
        transform: translateY(-8px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-6bbet__feature-icon {
        width: 80px; /* Min size 200x200px requirement. This is an example, actual image placeholder will be 200x200 */
        height: 80px;
        margin-bottom: 20px;
        max-width: 100%;
        height: auto;
    }

    .page-6bbet__feature-title {
        font-size: 1.4em;
        color: var(--secondary-color);
        margin-bottom: 10px;
    }

    .page-6bbet__feature-description {
        font-size: 1em;
        color: var(--gray-text);
    }

    /* FAQ Section */
    .page-6bbet__faq-list {
        margin-top: 40px;
        text-align: left;
    }

    .page-6bbet__faq-item {
        background-color: var(--card-bg);
        margin-bottom: 15px;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        border: 1px solid var(--border-color);
    }

    .page-6bbet__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 25px;
        cursor: pointer;
        user-select: none;
        background-color: #333;
        color: var(--light-text);
        font-size: 1.2em;
        font-weight: bold;
        transition: background-color 0.3s ease;
    }

    .page-6bbet__faq-question:hover {
        background-color: #444;
    }

    .page-6bbet__faq-question h3 {
        margin: 0;
        flex-grow: 1;
        pointer-events: none; /* Crucial for click event to work on parent div */
        color: var(--light-text); /* Ensure good contrast */
    }

    .page-6bbet__faq-toggle {
        font-size: 1.5em;
        font-weight: bold;
        color: var(--primary-color);
        margin-left: 15px;
        pointer-events: none; /* Crucial for click event to work on parent div */
    }

    .page-6bbet__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 25px;
        opacity: 0;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        background-color: var(--card-bg);
        color: var(--gray-text);
    }

    .page-6bbet__faq-item.active .page-6bbet__faq-answer {
        max-height: 2000px !important; /* Sufficiently large */
        padding: 20px 25px !important;
        opacity: 1;
    }

    .page-6bbet__faq-item.active .page-6bbet__faq-toggle {
        content: "−";
        color: var(--secondary-color);
    }

    /* Call to Action Section */
    .page-6bbet__cta-section {
        background-color: var(--primary-color);
        padding: 50px 20px;
        margin-top: 60px;
    }

    .page-6bbet__cta-title {
        color: var(--light-text);
        font-size: 2.8em;
        margin-bottom: 20px;
        font-weight: bold;
    }

    .page-6bbet__cta-description {
        color: var(--light-text);
        font-size: 1.3em;
        margin-bottom: 30px;
    }

    /* Responsive adjustments */
    @media (max-width: 1024px) {
        .page-6bbet__hero-title {
            font-size: 3em;
        }
        .page-6bbet__hero-description {
            font-size: 1.2em;
        }
        .page-6bbet__title {
            font-size: 2.2em;
        }
        .page-6bbet__subtitle {
            font-size: 1.6em;
        }
    }

    @media (max-width: 768px) {
        .page-6bbet__hero-title {
            font-size: 2.5em;
        }
        .page-6bbet__hero-description {
            font-size: 1.1em;
        }
        .page-6bbet__hero-button {
            padding: 12px 25px;
            font-size: 1.1em;
        }
        .page-6bbet__title {
            font-size: 2em;
        }
        .page-6bbet__subtitle {
            font-size: 1.4em;
        }
        .page-6bbet__text {
            font-size: 1em;
        }
        .page-6bbet__floating-button {
            font-size: 1em;
            padding: 10px 0;
            margin: 0 3px;
        }

        /* Responsive for lists (product gallery, promo grid, features grid) */
        .page-6bbet__product-gallery,
        .page-6bbet__promo-grid,
        .page-6bbet__features-grid {
            grid-template-columns: 1fr; /* Stack items */
            gap: 20px;
        }

        .page-6bbet__product-card,
        .page-6bbet__promo-card,
        .page-6bbet__feature-item {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            padding: 15px; /* Adjust padding for smaller screens */
        }

        .page-6bbet__product-content,
        .page-6bbet__promo-content,
        .page-6bbet__feature-item {
            padding: 15px; /* Adjust padding for smaller screens */
        }

        .page-6bbet__product-name,
        .page-6bbet__promo-title,
        .page-6bbet__feature-title {
            font-size: 1.3em;
        }

        .page-6bbet__product-description,
        .page-6bbet__promo-description,
        .page-6bbet__feature-description {
            font-size: 0.9em;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
            word-break: break-word !important;
        }

        .page-6bbet__product-image-wrapper,
        .page-6bbet__promo-image-wrapper {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
        }

        .page-6bbet__product-image,
        .page-6bbet__promo-image,
        .page-6bbet__feature-icon {
            max-width: 100% !important;
            height: auto !important;
            box-sizing: border-box !important;
        }

        /* FAQ responsiveness */
        .page-6bbet__faq-question {
            padding: 15px 20px;
            font-size: 1.1em;
        }
        .page-6bbet__faq-answer {
            padding: 0 20px;
        }
        .page-6bbet__faq-item.active .page-6bbet__faq-answer {
            padding: 15px 20px !important;
        }
        .page-6bbet__cta-title {
            font-size: 2em;
        }
        .page-6bbet__cta-description {
            font-size: 1.1em;
        }
    }

    @media (max-width: 480px) {
        .page-6bbet__hero-title {
            font-size: 2em;
        }
        .page-6bbet__hero-description {
            font-size: 0.9em;
        }
        .page-6bbet__hero-button {
            padding: 10px 20px;
            font-size: 1em;
        }
        .page-6bbet__floating-buttons {
            padding: 8px 0;
        }
        .page-6bbet__floating-button {
            font-size: 0.9em;
            padding: 8px 0;
            margin: 0 2px;
        }
        .page-6bbet__title {
            font-size: 1.8em;
        }
        .page-6bbet__subtitle {
            font-size: 1.2em;
        }
        .page-6bbet__faq-question {
            font-size: 1em;
            padding: 12px 15px;
        }
        .page-6bbet__faq-answer {
            padding: 0 15px;
        }
        .page-6bbet__faq-item.active .page-6bbet__faq-answer {
            padding: 12px 15px !important;
        }
        .page-6bbet__cta-title {
            font-size: 1.8em;
        }
        .page-6bbet__cta-description {
            font-size: 1em;
        }
        .page-6bbet__section {
            padding: 30px 15px;
        }
    }