:root {
        --primary-color: #e44d26; /* Một màu cam-đỏ rực rỡ */
        --secondary-color: #333;
        --text-color: #333;
        --background-color: #f9f9f9;
        --light-grey: #eee;
        --dark-grey: #555;
        --white: #fff;
    }

    /* Phong cách chung cho phạm vi trang */
    .page-c5454 {
        font-family: 'Arial', sans-serif;
        line-height: 1.6;
        color: var(--text-color);
        background-color: var(--background-color);
        overflow-x: hidden;
    }

    .page-c5454__container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        box-sizing: border-box;
    }

    .page-c5454__section {
        padding: 60px 0;
        text-align: center;
    }

    .page-c5454__section-title {
        font-size: 2.5em;
        color: var(--secondary-color);
        margin-bottom: 30px;
        position: relative;
        padding-bottom: 15px;
    }

    .page-c5454__section-title::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: 0;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background-color: var(--primary-color);
        border-radius: 2px;
    }

    .page-c5454__button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--white);
        padding: 15px 30px;
        border-radius: 8px;
        text-decoration: none;
        font-weight: bold;
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: none;
        cursor: pointer;
        font-size: 1.1em;
        margin-top: 20px;
    }

    .page-c5454__button:hover {
        background-color: #d1411e;
        transform: translateY(-2px);
    }

    /* Phần Hero */
    .page-c5454__hero-section {
        background-color: #222;
        color: var(--white);
        padding: var(--header-offset, 120px) 0 80px; /* Khoảng cách từ header cố định */
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .page-c5454__hero-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.4;
        z-index: 1;
    }

    .page-c5454__hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .page-c5454__hero-title {
        font-size: 3.5em;
        margin-bottom: 20px;
        line-height: 1.2;
        color: var(--primary-color);
    }

    .page-c5454__hero-subtitle {
        font-size: 1.4em;
        margin-bottom: 30px;
        color: var(--light-grey);
    }

    /* Phần Giới thiệu */
    .page-c5454__intro-section {
        background-color: var(--white);
        padding: 60px 0;
    }

    .page-c5454__intro-content {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 40px;
        text-align: left;
    }

    .page-c5454__intro-text {
        flex: 1;
        min-width: 300px;
    }

    .page-c5454__intro-text p {
        margin-bottom: 15px;
        font-size: 1.1em;
    }

    .page-c5454__intro-image-wrapper {
        flex: 1;
        min-width: 300px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .page-c5454__intro-image {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    }

    /* Phần Tính năng */
    .page-c5454__features-section {
        background-color: var(--light-grey);
        padding: 60px 0;
    }

    .page-c5454__features-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .page-c5454__feature-item {
        background-color: var(--white);
        padding: 30px;
        border-radius: 12px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .page-c5454__feature-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .page-c5454__feature-image {
        width: 250px; /* Tối thiểu 200x200 */
        height: 180px; /* Tối thiểu 200x200 */
        object-fit: contain;
        margin-bottom: 20px;
        border-radius: 8px;
        max-width: 100%;
        height: auto;
    }

    .page-c5454__feature-title {
        font-size: 1.4em;
        color: var(--primary-color);
        margin-bottom: 10px;
    }

    .page-c5454__feature-description {
        font-size: 1em;
        color: var(--dark-grey);
    }

    /* Phần Trò chơi */
    .page-c5454__games-section {
        padding: 60px 0;
        background-color: var(--background-color);
    }

    .page-c5454__games-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .page-c5454__game-card {
        background-color: var(--white);
        border-radius: 12px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        overflow: hidden;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        text-align: center;
        box-sizing: border-box;
    }

    .page-c5454__game-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .page-c5454__game-image {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-bottom: 1px solid var(--light-grey);
    }

    .page-c5454__game-title {
        font-size: 1.3em;
        color: var(--secondary-color);
        padding: 15px;
        margin: 0;
    }

    /* Phần Khuyến mãi */
    .page-c5454__promotions-section {
        background-color: #333;
        color: var(--white);
        padding: 60px 0;
    }

    .page-c5454__promotions-section .page-c5454__section-title {
        color: var(--primary-color);
    }

    .page-c5454__promotions-content {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 40px;
        text-align: left;
    }

    .page-c5454__promotions-text {
        flex: 1;
        min-width: 300px;
    }

    .page-c5454__promotions-text p {
        margin-bottom: 15px;
        font-size: 1.1em;
        color: var(--light-grey);
    }

    .page-c5454__promotions-image-wrapper {
        flex: 1;
        min-width: 300px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .page-c5454__promotions-image {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    }

    /* Phần Câu hỏi thường gặp (FAQ) */
    .page-c5454__faq-section {
        background-color: var(--white);
        padding: 60px 0;
    }

    .page-c5454__faq-list {
        max-width: 800px;
        margin: 0 auto;
        text-align: left;
    }

    .page-c5454__faq-item {
        margin-bottom: 15px;
        border: 1px solid var(--light-grey);
        border-radius: 8px;
        overflow: hidden;
        background-color: var(--white);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .page-c5454__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 18px 20px;
        background-color: #f0f0f0;
        cursor: pointer;
        user-select: none;
        font-size: 1.2em;
        font-weight: bold;
        color: var(--secondary-color);
        transition: background-color 0.3s ease;
    }

    .page-c5454__faq-question:hover {
        background-color: #e0e0e0;
    }

    .page-c5454__faq-question-title {
        margin: 0;
        font-size: 1.1em; /* Điều chỉnh để phân cấp tốt hơn */
        color: var(--secondary-color);
        pointer-events: none; /* Quan trọng để sự kiện click diễn ra trên div cha */
    }

    .page-c5454__faq-toggle {
        font-size: 1.5em;
        line-height: 1;
        color: var(--primary-color);
        transition: transform 0.3s ease;
        pointer-events: none; /* Quan trọng để sự kiện click diễn ra trên div cha */
    }

    .page-c5454__faq-item.active .page-c5454__faq-toggle {
        transform: rotate(45deg); /* Xoay dấu cộng để giống dấu X hoặc dấu trừ */
    }

    .page-c5454__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 20px;
        opacity: 0;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        color: var(--dark-grey);
    }

    .page-c5454__faq-item.active .page-c5454__faq-answer {
        max-height: 2000px !important; /* Giá trị đủ lớn để chứa mọi nội dung */
        padding: 20px 20px !important;
        opacity: 1;
    }

    .page-c5454__faq-answer p {
        margin: 0;
    }

    /* Phần Kêu gọi hành động (CTA) */
    .page-c5454__cta-section {
        background-color: var(--primary-color);
        color: var(--white);
        padding: 60px 0;
    }

    .page-c5454__cta-section .page-c5454__section-title {
        color: var(--white);
    }

    .page-c5454__cta-subtitle {
        font-size: 1.2em;
        margin-bottom: 30px;
    }

    .page-c5454__cta-image {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        margin-top: 30px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    }

    /* Thiết kế đáp ứng (Responsive Design) */
    @media (max-width: 992px) {
        .page-c5454__hero-title {
            font-size: 3em;
        }
        .page-c5454__section-title {
            font-size: 2em;
        }
        .page-c5454__intro-content,
        .page-c5454__promotions-content {
            flex-direction: column;
            text-align: center;
        }
        .page-c5454__intro-text,
        .page-c5454__promotions-text {
            min-width: unset;
        }
        .page-c5454__intro-image-wrapper,
        .page-c5454__promotions-image-wrapper {
            order: -1; /* Ảnh nằm trên văn bản trên màn hình nhỏ hơn */
        }
    }

    @media (max-width: 768px) {
        .page-c5454__hero-section {
            padding-top: var(--header-offset, 200px); /* Điều chỉnh cho khoảng cách header trên di động */
            padding-bottom: 50px;
        }
        .page-c5454__hero-title {
            font-size: 2.2em;
        }
        .page-c5454__hero-subtitle {
            font-size: 1.1em;
        }
        .page-c5454__section {
            padding: 40px 0;
        }
        .page-c5454__section-title {
            font-size: 1.8em;
            margin-bottom: 20px;
        }
        .page-c5454__button {
            padding: 12px 25px;
            font-size: 1em;
        }

        /* Tối ưu hóa danh sách đáp ứng */
        .page-c5454__features-list,
        .page-c5454__games-grid {
            grid-template-columns: 1fr; /* Một cột trên di động */
            gap: 20px;
            width: 100% !important;
            max-width: 100% !important;
            padding: 0 15px !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            box-sizing: border-box !important;
        }

        .page-c5454__feature-item,
        .page-c5454__game-card {
            width: 100% !important;
            max-width: 100% !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            box-sizing: border-box !important;
            padding: 20px !important; /* Đảm bảo padding nằm trong box */
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
        }
        .page-c5454__feature-image {
            width: 200px;
            height: 150px;
        }
        .page-c5454__game-image {
            height: 180px;
        }

        .page-c5454__faq-list {
            padding: 0 15px;
        }
        .page-c5454__faq-question {
            padding: 15px;
            font-size: 1.1em;
        }
        .page-c5454__faq-question-title {
            font-size: 1em;
        }
        .page-c5454__faq-answer {
            padding: 0 15px;
        }
        .page-c5454__faq-item.active .page-c5454__faq-answer {
            padding: 15px 15px !important;
        }
    }

    @media (max-width: 480px) {
        .page-c5454__hero-title {
            font-size: 1.8em;
        }
        .page-c5454__hero-subtitle {
            font-size: 1em;
        }
        .page-c5454__section-title {
            font-size: 1.5em;
        }
    }