.page-6789-dang-nhap {
        font-family: 'Arial', sans-serif;
        color: #f0f0f0;
        background-color: #1a1a2e; /* Dark background */
        line-height: 1.6;
        padding-top: 10px; /* Small top padding for hero/first section, assuming body has header offset */
    }

    .page-6789-dang-nhap__section-title {
        color: #e94560; /* Accent color */
        text-align: center;
        font-size: 2.2em;
        margin-bottom: 40px;
        padding: 0 15px;
        position: relative;
        text-transform: uppercase;
    }

    .page-6789-dang-nhap__section-title::after {
        content: '';
        display: block;
        width: 60px;
        height: 4px;
        background-color: #e94560;
        margin: 10px auto 0;
        border-radius: 2px;
    }

    .page-6789-dang-nhap__strong-keyword {
        color: #e94560;
        font-weight: bold;
    }

    /* Hero Section */
    .page-6789-dang-nhap__hero-section {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 60px 20px;
        min-height: 500px;
        overflow: hidden;
        background-color: #0f0f1a;
    }

    .page-6789-dang-nhap__hero-image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.3;
        z-index: 0;
        max-width: 100%; /* Important for responsiveness */
    }

    .page-6789-dang-nhap__hero-content {
        position: relative;
        z-index: 1;
        max-width: 900px;
    }

    .page-6789-dang-nhap__hero-title {
        font-size: 3em;
        color: #ffffff;
        margin-bottom: 20px;
        line-height: 1.2;
    }

    .page-6789-dang-nhap__hero-description {
        font-size: 1.2em;
        color: #c0c0c0;
        margin-bottom: 30px;
    }

    .page-6789-dang-nhap__hero-button {
        display: inline-block;
        background-color: #e94560;
        color: #ffffff;
        padding: 15px 30px;
        border-radius: 5px;
        text-decoration: none;
        font-weight: bold;
        font-size: 1.1em;
        transition: background-color 0.3s ease;
    }

    .page-6789-dang-nhap__hero-button:hover {
        background-color: #ff6a80;
    }

    /* Features Section */
    .page-6789-dang-nhap__features-section {
        padding: 60px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .page-6789-dang-nhap__features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
    }

    .page-6789-dang-nhap__feature-item {
        background-color: #2e2e4e;
        padding: 30px;
        border-radius: 10px;
        text-align: center;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-6789-dang-nhap__feature-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    }

    .page-6789-dang-nhap__feature-icon {
        width: 200px; /* Min size 200x200 */
        height: auto;
        margin-bottom: 20px;
        max-width: 100%;
        box-sizing: border-box;
    }

    .page-6789-dang-nhap__feature-title {
        font-size: 1.5em;
        color: #ffffff;
        margin-bottom: 10px;
    }

    .page-6789-dang-nhap__feature-text {
        color: #c0c0c0;
    }

    /* How to Login Section */
    .page-6789-dang-nhap__how-to-login-section {
        padding: 60px 20px;
        background-color: #1a1a2e;
        max-width: 1200px;
        margin: 0 auto;
    }

    .page-6789-dang-nhap__login-steps {
        display: flex;
        justify-content: center;
        gap: 30px;
        flex-wrap: wrap;
        margin-bottom: 40px;
    }

    .page-6789-dang-nhap__step-item {
        background-color: #2e2e4e;
        padding: 30px;
        border-radius: 10px;
        text-align: center;
        flex: 1;
        min-width: 280px;
        max-width: 350px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        box-sizing: border-box;
    }

    .page-6789-dang-nhap__step-number {
        font-size: 2.5em;
        color: #e94560;
        font-weight: bold;
        margin-bottom: 15px;
        border: 3px solid #e94560;
        border-radius: 50%;
        width: 70px;
        height: 70px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 20px;
    }

    .page-6789-dang-nhap__step-title {
        font-size: 1.4em;
        color: #ffffff;
        margin-bottom: 10px;
    }

    .page-6789-dang-nhap__step-description {
        color: #c0c0c0;
    }

    .page-6789-dang-nhap__login-cta {
        text-align: center;
        background-color: #2e2e4e;
        padding: 40px 20px;
        border-radius: 10px;
        max-width: 800px;
        margin: 0 auto;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .page-6789-dang-nhap__cta-text {
        font-size: 1.3em;
        color: #ffffff;
        margin-bottom: 25px;
    }

    .page-6789-dang-nhap__cta-button {
        display: inline-block;
        background-color: #e94560;
        color: #ffffff;
        padding: 15px 30px;
        border-radius: 5px;
        text-decoration: none;
        font-weight: bold;
        font-size: 1.1em;
        transition: background-color 0.3s ease;
    }

    .page-6789-dang-nhap__cta-button:hover {
        background-color: #ff6a80;
    }

    /* Security Section */
    .page-6789-dang-nhap__security-section {
        padding: 60px 20px;
        max-width: 1200px;
        margin: 0 auto;
        background-color: #0f0f1a;
    }

    .page-6789-dang-nhap__security-content {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 40px;
        justify-content: center;
    }

    .page-6789-dang-nhap__security-image {
        flex: 1;
        min-width: 300px;
        max-width: 500px;
        height: auto;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        max-width: 100%; /* Important for responsiveness */
        box-sizing: border-box;
    }

    .page-6789-dang-nhap__security-list {
        flex: 1;
        min-width: 300px;
        list-style: none;
        padding: 0;
        margin: 0;
        box-sizing: border-box; /* Required for lists */
    }

    .page-6789-dang-nhap__security-list-item {
        background-color: #2e2e4e;
        padding: 15px 20px;
        margin-bottom: 15px;
        border-radius: 8px;
        display: flex;
        align-items: flex-start;
        color: #c0c0c0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        box-sizing: border-box; /* Required for lists */
        word-wrap: break-word; /* Required for lists */
        overflow-wrap: break-word; /* Required for lists */
    }

    .page-6789-dang-nhap__security-list-item::before {
        content: '✓';
        color: #4CAF50; /* Green checkmark */
        font-weight: bold;
        margin-right: 10px;
        font-size: 1.2em;
    }

    /* FAQ Section */
    .page-6789-dang-nhap__faq-section {
        padding: 60px 20px;
        background-color: #1a1a2e;
        max-width: 1200px;
        margin: 0 auto;
    }

    .page-6789-dang-nhap__faq-container {
        max-width: 800px;
        margin: 0 auto;
    }

    .page-6789-dang-nhap__faq-item {
        background-color: #2e2e4e;
        margin-bottom: 15px;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .page-6789-dang-nhap__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 18px 25px;
        cursor: pointer;
        background-color: #3a3a5e;
        color: #ffffff;
        font-size: 1.1em;
        font-weight: bold;
        user-select: none;
        transition: background-color 0.3s ease;
    }

    .page-6789-dang-nhap__faq-question:hover {
        background-color: #4a4a6e;
    }

    .page-6789-dang-nhap__faq-title {
        margin: 0;
        font-size: 1.1em;
        color: #ffffff;
        pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-6789-dang-nhap__faq-toggle {
        font-size: 1.5em;
        line-height: 1;
        transition: transform 0.3s ease;
        pointer-events: none; /* Prevent span from blocking click on parent div */
    }

    .page-6789-dang-nhap__faq-item.active .page-6789-dang-nhap__faq-toggle {
        transform: rotate(45deg); /* Change + to X or - */
    }

    .page-6789-dang-nhap__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 25px;
        color: #c0c0c0;
        background-color: #2e2e4e;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        opacity: 0;
    }

    .page-6789-dang-nhap__faq-item.active .page-6789-dang-nhap__faq-answer {
        max-height: 2000px !important; /* Sufficiently large */
        padding: 20px 25px !important;
        opacity: 1;
    }

    .page-6789-dang-nhap__faq-answer p {
        margin: 0;
        padding-bottom: 10px; /* Add some padding to bottom of paragraph */
    }

    .page-6789-dang-nhap__faq-answer a {
        color: #e94560;
        text-decoration: none;
    }

    .page-6789-dang-nhap__faq-answer a:hover {
        text-decoration: underline;
    }

    /* Floating Buttons */
    .page-6789-dang-nhap__floating-buttons {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        z-index: 1000;
    }

    .page-6789-dang-nhap__floating-button {
        display: block;
        padding: 12px 25px;
        border-radius: 30px;
        text-align: center;
        text-decoration: none;
        font-weight: bold;
        font-size: 1em;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        transition: transform 0.2s ease, background-color 0.2s ease;
    }

    .page-6789-dang-nhap__floating-button:hover {
        transform: translateY(-3px);
    }

    .page-6789-dang-nhap__register-button {
        background-color: #4CAF50; /* Green for register */
        color: #ffffff;
    }

    .page-6789-dang-nhap__register-button:hover {
        background-color: #5cb85c;
    }

    .page-6789-dang-nhap__login-button {
        background-color: #e94560; /* Red for login */
        color: #ffffff;
    }

    .page-6789-dang-nhap__login-button:hover {
        background-color: #ff6a80;
    }


    /* Responsive Design */
    @media (max-width: 768px) {
        .page-6789-dang-nhap__hero-section {
            padding: 40px 15px;
            min-height: 400px;
        }

        .page-6789-dang-nhap__hero-title {
            font-size: 2.2em;
        }

        .page-6789-dang-nhap__hero-description {
            font-size: 1em;
        }

        .page-6789-dang-nhap__section-title {
            font-size: 1.8em;
            margin-bottom: 30px;
        }

        .page-6789-dang-nhap__features-section,
        .page-6789-dang-nhap__how-to-login-section,
        .page-6789-dang-nhap__security-section,
        .page-6789-dang-nhap__faq-section {
            padding: 40px 15px;
        }

        .page-6789-dang-nhap__features-grid {
            grid-template-columns: 1fr;
        }

        .page-6789-dang-nhap__login-steps {
            flex-direction: column;
            align-items: center;
        }

        .page-6789-dang-nhap__step-item {
            width: 100%;
            max-width: 100%;
            margin-left: 0 !important;
            margin-right: 0 !important;
            box-sizing: border-box !important;
        }

        .page-6789-dang-nhap__security-content {
            flex-direction: column;
        }

        .page-6789-dang-nhap__security-image {
            width: 100%;
            max-width: 100%;
            margin-bottom: 20px;
            box-sizing: border-box !important;
        }

        .page-6789-dang-nhap__security-list {
            width: 100%;
            max-width: 100%;
            padding: 0 !important; /* Ensure no extra padding */
            margin-left: 0 !important;
            margin-right: 0 !important;
            box-sizing: border-box !important;
        }

        .page-6789-dang-nhap__security-list-item {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
            padding: 15px !important; /* Adjust padding for mobile */
            margin-left: 0 !important;
            margin-right: 0 !important;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
            word-break: break-word !important;
        }

        .page-6789-dang-nhap__faq-question {
            font-size: 1em;
            padding: 15px 20px;
        }

        .page-6789-dang-nhap__faq-title {
            font-size: 1em;
        }

        .page-6789-dang-nhap__faq-answer {
            padding: 0 20px;
        }

        .page-6789-dang-nhap__faq-item.active .page-6789-dang-nhap__faq-answer {
            padding: 15px 20px !important;
        }

        .page-6789-dang-nhap__floating-buttons {
            flex-direction: row;
            width: calc(100% - 40px);
            left: 20px;
            right: 20px;
            bottom: 15px;
            justify-content: space-around;
            gap: 15px;
        }

        .page-6789-dang-nhap__floating-button {
            flex: 1;
            padding: 10px 15px;
            font-size: 0.9em;
        }
    }

    /* Ensure all images are responsive */
    .page-6789-dang-nhap img {
        max-width: 100%;
        height: auto;
        display: block; /* Remove extra space below images */
    }

    /* Ensure image containers are responsive */
    .page-6789-dang-nhap__feature-item,
    .page-6789-dang-nhap__step-item,
    .page-6789-dang-nhap__security-content {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }
    @media (max-width: 768px) {
        .page-6789-dang-nhap img {
            max-width: 100% !important;
            height: auto !important;
            box-sizing: border-box !important;
        }
        .page-6789-dang-nhap__feature-icon,
        .page-6789-dang-nhap__security-image {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
        }
    }