:root {
        --page-678win-dangnhap-primary-color: #e53935; /* Đỏ mạnh */
        --page-678win-dangnhap-secondary-color: #ffb300; /* Vàng cam */
        --page-678win-dangnhap-background-dark: #1a1a1a; /* Nền tối */
        --page-678win-dangnhap-background-light: #f5f5f5; /* Nền sáng */
        --page-678win-dangnhap-text-light: #ffffff; /* Chữ sáng */
        --page-678win-dangnhap-text-dark: #333333; /* Chữ tối */
        --page-678win-dangnhap-border-color: #444444; /* Màu viền */
        --page-678win-dangnhap-font-family: 'Arial', sans-serif;
    }

    .page-678win-dangnhap {
        font-family: var(--page-678win-dangnhap-font-family);
        color: var(--page-678win-dangnhap-text-dark);
        background-color: var(--page-678win-dangnhap-background-light);
        line-height: 1.6;
    }

    .page-678win-dangnhap__section {
        padding: 40px 20px;
        margin-bottom: 20px;
        background-color: var(--page-678win-dangnhap-text-light);
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        text-align: center;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
    }

    .page-678win-dangnhap__section--dark {
        background-color: var(--page-678win-dangnhap-background-dark);
        color: var(--page-678win-dangnhap-text-light);
    }

    .page-678win-dangnhap__hero-section {
        padding-top: 10px; /* Adjust for fixed header */
        background: linear-gradient(135deg, #2c3e50, #34495e);
        color: var(--page-678win-dangnhap-text-light);
        text-align: center;
        padding: 60px 20px 40px;
        border-radius: 0;
        box-shadow: none;
        margin-bottom: 0;
    }

    .page-678win-dangnhap__hero-title {
        font-size: 2.8em;
        margin-bottom: 15px;
        color: var(--page-678win-dangnhap-secondary-color);
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-678win-dangnhap__hero-subtitle {
        font-size: 1.2em;
        max-width: 800px;
        margin: 0 auto 30px;
        line-height: 1.8;
    }

    .page-678win-dangnhap__cta-button {
        display: inline-block;
        background-color: var(--page-678win-dangnhap-primary-color);
        color: var(--page-678win-dangnhap-text-light);
        padding: 15px 30px;
        border-radius: 30px;
        font-size: 1.1em;
        font-weight: bold;
        text-decoration: none;
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: none;
        cursor: pointer;
        margin: 10px;
    }

    .page-678win-dangnhap__cta-button:hover {
        background-color: #c62828;
        transform: translateY(-3px);
    }

    .page-678win-dangnhap__login-section {
        background-color: var(--page-678win-dangnhap-text-light);
    }

    .page-678win-dangnhap__login-form {
        max-width: 400px;
        margin: 30px auto;
        padding: 30px;
        border: 1px solid var(--page-678win-dangnhap-border-color);
        border-radius: 10px;
        background-color: #ffffff;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        text-align: left;
    }

    .page-678win-dangnhap__form-group {
        margin-bottom: 20px;
    }

    .page-678win-dangnhap__form-group label {
        display: block;
        margin-bottom: 8px;
        font-weight: bold;
        color: var(--page-678win-dangnhap-text-dark);
    }

    .page-678win-dangnhap__form-group input {
        width: calc(100% - 20px);
        padding: 12px 10px;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1em;
    }

    .page-678win-dangnhap__form-group input:focus {
        border-color: var(--page-678win-dangnhap-primary-color);
        outline: none;
        box-shadow: 0 0 0 2px rgba(var(--page-678win-dangnhap-primary-color), 0.2);
    }

    .page-678win-dangnhap__submit-button {
        width: 100%;
        background-color: var(--page-678win-dangnhap-primary-color);
        color: var(--page-678win-dangnhap-text-light);
        padding: 15px;
        border: none;
        border-radius: 5px;
        font-size: 1.1em;
        font-weight: bold;
        cursor: pointer;
        transition: background-color 0.3s ease;
    }

    .page-678win-dangnhap__submit-button:hover {
        background-color: #c62828;
    }

    .page-678win-dangnhap__section-title {
        font-size: 2em;
        color: var(--page-678win-dangnhap-primary-color);
        margin-bottom: 25px;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
    }

    .page-678win-dangnhap__benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        margin-top: 30px;
    }

    .page-678win-dangnhap__benefit-item {
        background-color: var(--page-678win-dangnhap-background-dark);
        color: var(--page-678win-dangnhap-text-light);
        padding: 25px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        text-align: center;
        transition: transform 0.3s ease;
    }

    .page-678win-dangnhap__benefit-item:hover {
        transform: translateY(-5px);
    }

    .page-678win-dangnhap__benefit-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 15px;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--page-678win-dangnhap-secondary-color);
    }

    .page-678win-dangnhap__benefit-title {
        font-size: 1.3em;
        color: var(--page-678win-dangnhap-secondary-color);
        margin-bottom: 10px;
    }

    .page-678win-dangnhap__benefit-description {
        font-size: 0.95em;
        color: #e0e0e0;
    }

    .page-678win-dangnhap__promotion-list {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 25px;
        margin-top: 30px;
    }

    .page-678win-dangnhap__promotion-card {
        background-color: var(--page-678win-dangnhap-background-dark);
        color: var(--page-678win-dangnhap-text-light);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        width: 100%;
        max-width: 350px;
        transition: transform 0.3s ease;
        text-align: left;
    }

    .page-678win-dangnhap__promotion-card:hover {
        transform: translateY(-5px);
    }

    .page-678win-dangnhap__promotion-image {
        width: 100%;
        height: 200px;
        object-fit: cover;
        display: block;
    }

    .page-678win-dangnhap__promotion-content {
        padding: 20px;
    }

    .page-678win-dangnhap__promotion-title {
        font-size: 1.4em;
        color: var(--page-678win-dangnhap-secondary-color);
        margin-bottom: 10px;
    }

    .page-678win-dangnhap__promotion-description {
        font-size: 0.9em;
        color: #e0e0e0;
        margin-bottom: 15px;
    }

    .page-678win-dangnhap__faq-section {
        background-color: var(--page-678win-dangnhap-text-light);
    }

    .page-678win-dangnhap__faq-list {
        max-width: 800px;
        margin: 30px auto 0;
        text-align: left;
    }

    .page-678win-dangnhap__faq-item {
        border: 1px solid var(--page-678win-dangnhap-border-color);
        border-radius: 8px;
        margin-bottom: 15px;
        overflow: hidden;
        background-color: #ffffff;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    }

    .page-678win-dangnhap__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 20px;
        background-color: #f0f0f0;
        cursor: pointer;
        user-select: none;
        transition: background-color 0.3s ease;
    }

    .page-678win-dangnhap__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        color: var(--page-678win-dangnhap-text-dark);
        pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-678win-dangnhap__faq-toggle {
        font-size: 1.5em;
        font-weight: bold;
        color: var(--page-678win-dangnhap-primary-color);
        transition: transform 0.3s ease;
        pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-678win-dangnhap__faq-item.active .page-678win-dangnhap__faq-toggle {
        transform: rotate(45deg); /* Change + to X or - */
    }

    .page-678win-dangnhap__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 15px;
        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(--page-678win-dangnhap-text-dark);
    }

    .page-678win-dangnhap__faq-item.active .page-678win-dangnhap__faq-answer {
        max-height: 2000px !important; /* Sufficiently large */
        padding: 20px 15px !important;
        opacity: 1;
    }

    /* Floating buttons */
    .page-678win-dangnhap__floating-buttons {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        z-index: 1000;
    }

    .page-678win-dangnhap__floating-button {
        background-color: var(--page-678win-dangnhap-primary-color);
        color: var(--page-678win-dangnhap-text-light);
        padding: 12px 20px;
        border-radius: 25px;
        text-align: center;
        font-weight: bold;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: none;
        cursor: pointer;
        text-decoration: none; /* Ensure it looks like a button */
    }

    .page-678win-dangnhap__floating-button--register {
        background-color: var(--page-678win-dangnhap-secondary-color);
    }

    .page-678win-dangnhap__floating-button:hover {
        transform: translateY(-3px);
        background-color: #c62828;
    }

    .page-678win-dangnhap__floating-button--register:hover {
        background-color: #e6a200;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .page-678win-dangnhap__hero-title {
            font-size: 2em;
        }

        .page-678win-dangnhap__hero-subtitle {
            font-size: 1em;
        }

        .page-678win-dangnhap__section {
            padding: 30px 15px;
            margin-bottom: 15px;
        }

        .page-678win-dangnhap__section-title {
            font-size: 1.8em;
            margin-bottom: 20px;
        }

        .page-678win-dangnhap__benefits-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .page-678win-dangnhap__promotion-card {
            max-width: 100%;
        }

        .page-678win-dangnhap__faq-list {
            padding: 0 10px;
        }

        .page-678win-dangnhap__faq-question {
            padding: 12px 15px;
        }

        .page-678win-dangnhap__faq-question h3 {
            font-size: 1em;
        }

        .page-678win-dangnhap__faq-answer {
            padding: 0 10px;
        }

        .page-678win-dangnhap__faq-item.active .page-678win-dangnhap__faq-answer {
            padding: 15px 10px !important;
        }

        .page-678win-dangnhap__floating-buttons {
            bottom: 15px;
            right: 15px;
            flex-direction: row;
            width: calc(100% - 30px);
            justify-content: space-around;
        }

        .page-678win-dangnhap__floating-button {
            flex: 1;
            margin: 0 5px;
            padding: 10px 15px;
            font-size: 0.9em;
        }

        /* Responsive image and list item adjustments */
        .page-678win-dangnhap__benefit-icon,
        .page-678win-dangnhap__promotion-image {
            max-width: 100% !important;
            height: auto !important;
            box-sizing: border-box !important;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
        }

        .page-678win-dangnhap__benefits-grid,
        .page-678win-dangnhap__promotion-list,
        .page-678win-dangnhap__faq-list {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
            padding: 0 !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
        }

        .page-678win-dangnhap__benefit-item,
        .page-678win-dangnhap__promotion-card,
        .page-678win-dangnhap__faq-item {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            padding-left: 15px !important;
            padding-right: 15px !important;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
            word-break: break-word !important;
        }
    }