:root {
        --primary-color: #e44d26; /* Cam đỏ */
        --secondary-color: #333; /* Xám đậm */
        --accent-color: #f7b731; /* Vàng cam */
        --background-light: #f5f5f5; /* Nền sáng */
        --text-dark: #333; /* Chữ đậm */
        --text-light: #fff; /* Chữ sáng */
        --border-color: #ddd; /* Màu viền */
    }

    body {
        font-family: 'Arial', sans-serif;
        line-height: 1.6;
        color: var(--text-dark);
        background-color: var(--background-light);
    }

    .page-11vn {
        max-width: 1200px;
        margin: 0 auto;
        padding: 10px; /* Small decorative padding-top, body has main offset */
        box-sizing: border-box;
    }

    .page-11vn__hero-section {
        text-align: center;
        padding: 40px 15px;
        background-color: var(--secondary-color);
        color: var(--text-light);
        border-radius: 10px;
        margin-bottom: 30px;
        position: relative;
        overflow: hidden;
    }

    .page-11vn__hero-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.3;
        z-index: 0;
    }

    .page-11vn__hero-content {
        position: relative;
        z-index: 1;
        max-width: 800px;
        margin: 0 auto;
    }

    .page-11vn__hero-title {
        font-size: 2.8em;
        margin-bottom: 15px;
        color: var(--accent-color);
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    .page-11vn__hero-description {
        font-size: 1.2em;
        margin-bottom: 30px;
        color: var(--text-light);
    }

    .page-11vn__button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--text-light);
        padding: 15px 30px;
        border-radius: 5px;
        text-decoration: none;
        font-weight: bold;
        transition: background-color 0.3s ease;
        border: none;
        cursor: pointer;
        font-size: 1em;
    }

    .page-11vn__button:hover {
        background-color: #c93a1d;
    }

    .page-11vn__section {
        background-color: var(--text-light);
        padding: 30px;
        margin-bottom: 30px;
        border-radius: 8px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .page-11vn__section-title {
        font-size: 2em;
        color: var(--primary-color);
        margin-bottom: 25px;
        text-align: center;
        position: relative;
        padding-bottom: 10px;
    }

    .page-11vn__section-title::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: 0;
        transform: translateX(-50%);
        width: 60px;
        height: 3px;
        background-color: var(--accent-color);
        border-radius: 2px;
    }

    .page-11vn__about-text {
        text-align: justify;
        margin-bottom: 20px;
        font-size: 1.1em;
    }

    .page-11vn__game-categories {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .page-11vn__game-card {
        background-color: var(--background-light);
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        width: calc(33% - 20px);
        min-width: 280px;
        text-align: center;
        transition: transform 0.3s ease;
        box-sizing: border-box;
    }

    .page-11vn__game-card:hover {
        transform: translateY(-5px);
    }

    .page-11vn__game-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        height: 200px; /* Fixed height for consistency */
    }

    .page-11vn__game-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        max-width: 100%; /* Ensure responsiveness */
    }

    .page-11vn__game-info {
        padding: 15px;
    }

    .page-11vn__game-title {
        font-size: 1.4em;
        color: var(--primary-color);
        margin-bottom: 10px;
    }

    .page-11vn__game-description {
        font-size: 0.95em;
        color: var(--secondary-color);
    }

    .page-11vn__promotions-list,
    .page-11vn__benefits-list,
    .page-11vn__payment-list,
    .page-11vn__provider-list {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
    }

    .page-11vn__promotions-item,
    .page-11vn__benefits-item,
    .page-11vn__payment-item,
    .page-11vn__provider-item {
        background-color: var(--background-light);
        padding: 20px;
        border-radius: 8px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.08);
        text-align: center;
        flex: 1 1 calc(33% - 30px);
        min-width: 250px;
        box-sizing: border-box;
        transition: background-color 0.3s ease;
    }

    .page-11vn__promotions-item:hover,
    .page-11vn__benefits-item:hover,
    .page-11vn__payment-item:hover,
    .page-11vn__provider-item:hover {
        background-color: #e0e0e0;
    }

    .page-11vn__promotions-title,
    .page-11vn__benefits-title {
        font-size: 1.2em;
        color: var(--primary-color);
        margin-bottom: 10px;
    }

    .page-11vn__payment-image-wrapper,
    .page-11vn__provider-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        height: 80px; /* Fixed height for payment/provider logos */
        display: flex;
        justify-content: center;
        align-items: center;
        margin-bottom: 10px;
    }

    .page-11vn__payment-image,
    .page-11vn__provider-image {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        display: block;
    }

    .page-11vn__faq-item {
        background-color: var(--background-light);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 10px;
        overflow: hidden;
    }

    .page-11vn__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 20px;
        background-color: #f0f0f0;
        cursor: pointer;
        user-select: none;
        font-weight: bold;
        color: var(--secondary-color);
        transition: background-color 0.3s ease;
    }

    .page-11vn__faq-question:hover {
        background-color: #e0e0e0;
    }

    .page-11vn__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        color: var(--primary-color);
        pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-11vn__faq-toggle {
        font-size: 1.5em;
        line-height: 1;
        transition: transform 0.3s ease;
        pointer-events: none; /* Prevent toggle icon from blocking click */
        color: var(--primary-color);
    }

    .page-11vn__faq-item.active .page-11vn__faq-toggle {
        transform: rotate(45deg); /* Plus sign rotates to form an X or minus */
    }

    .page-11vn__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 20px;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        opacity: 0;
        color: var(--text-dark);
    }

    .page-11vn__faq-item.active .page-11vn__faq-answer {
        max-height: 2000px !important; /* Sufficiently large */
        padding: 20px !important;
        opacity: 1;
    }

    .page-11vn__floating-buttons {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        z-index: 1000;
    }

    .page-11vn__floating-button {
        background-color: var(--primary-color);
        color: var(--text-light);
        padding: 12px 20px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: bold;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        transition: background-color 0.3s ease, transform 0.2s ease;
        text-align: center;
        min-width: 100px;
        font-size: 1em;
        border: none; /* Ensure it looks like a button */
        cursor: pointer;
    }

    .page-11vn__floating-button--login {
        background-color: var(--accent-color);
    }

    .page-11vn__floating-button:hover {
        transform: translateY(-3px);
        opacity: 0.9;
    }

    .page-11vn__floating-button--login:hover {
        background-color: #e0a020;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .page-11vn {
            padding: 5px;
        }

        .page-11vn__hero-title {
            font-size: 2em;
        }

        .page-11vn__hero-description {
            font-size: 1em;
        }

        .page-11vn__section-title {
            font-size: 1.8em;
        }

        .page-11vn__game-card {
            width: 100%;
            min-width: unset;
        }

        .page-11vn__promotions-item,
        .page-11vn__benefits-item,
        .page-11vn__payment-item,
        .page-11vn__provider-item {
            flex: 1 1 100%;
            min-width: unset;
            width: 100% !important; /* List item responsive */
            max-width: 100% !important; /* List item responsive */
            box-sizing: border-box !important; /* List item responsive */
            padding: 15px !important; /* Adjust padding */
            margin-left: 0 !important; /* List item responsive */
            margin-right: 0 !important; /* List item responsive */
            word-wrap: break-word !important; /* Text wrap */
            overflow-wrap: break-word !important; /* Text wrap */
            word-break: break-word !important; /* Text wrap for long keywords */
        }

        .page-11vn__promotions-list,
        .page-11vn__benefits-list,
        .page-11vn__payment-list,
        .page-11vn__provider-list {
            padding: 0 !important; /* List container responsive */
            width: 100% !important; /* List container responsive */
            max-width: 100% !important; /* List container responsive */
            box-sizing: border-box !important; /* List container responsive */
            margin-left: 0 !important; /* List container responsive */
            margin-right: 0 !important; /* List container responsive */
        }

        .page-11vn__floating-buttons {
            flex-direction: row;
            width: calc(100% - 40px);
            left: 20px;
            right: 20px;
            justify-content: space-around;
            bottom: 15px;
        }

        .page-11vn__floating-button {
            flex: 1;
            padding: 10px 15px;
            font-size: 0.9em;
            min-width: unset;
        }

        .page-11vn__faq-question {
            padding: 12px 15px;
        }

        .page-11vn__faq-question h3 {
            font-size: 1em;
        }

        .page-11vn__faq-answer {
            padding: 0 15px;
        }

        .page-11vn__faq-item.active .page-11vn__faq-answer {
            padding: 15px !important;
        }

        .page-11vn__game-image-wrapper,
        .page-11vn__payment-image-wrapper,
        .page-11vn__provider-image-wrapper {
            max-width: 100%;
            height: auto; /* Allow height to adjust for smaller screens */
        }
        .page-11vn__game-image,
        .page-11vn__payment-image,
        .page-11vn__provider-image {
            max-width: 100% !important;
            height: auto !important;
            box-sizing: border-box !important;
        }
    }

    @media (max-width: 480px) {
        .page-11vn__hero-title {
            font-size: 1.8em;
        }
        .page-11vn__section-title {
            font-size: 1.5em;
        }
        .page-11vn__button {
            padding: 12px 25px;
            font-size: 0.9em;
        }
    }