.page-huong-dan-dang-ky {
    font-family: 'Arial', sans-serif;
    color: #333333;
    background-color: #F5F7FA; /* Custom background color */
}

.page-huong-dan-dang-ky__hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 10px 20px 60px;
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
    color: #ffffff;
    position: relative;
    overflow: hidden;
    border-radius: 0 0 20px 20px;
}

.page-huong-dan-dang-ky__hero-image-wrapper {
    width: 100%;
    max-width: 1200px;
    margin-bottom: 30px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-huong-dan-dang-ky__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-huong-dan-dang-ky__hero-content {
    max-width: 900px;
    z-index: 1;
}

.page-huong-dan-dang-ky__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.page-huong-dan-dang-ky__hero-description {
    font-size: 1.15rem;
    line-height: 1.6;
    margin-bottom: 30px;
    opacity: 0.9;
}

.page-huong-dan-dang-ky__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-huong-dan-dang-ky__btn-primary,
.page-huong-dan-dang-ky__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 35px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-huong-dan-dang-ky__btn-primary {
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
    color: #ffffff;
    border: 2px solid transparent;
}

.page-huong-dan-dang-ky__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-huong-dan-dang-ky__btn-secondary {
    background: #ffffff;
    color: #E53935;
    border: 2px solid #E53935;
}

.page-huong-dan-dang-ky__btn-secondary:hover {
    transform: translateY(-3px);
    background: #f0f0f0;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-huong-dan-dang-ky__section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 15px;
    margin-top: 30px;
    background-color: #FFFFFF; /* Card BG */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.page-huong-dan-dang-ky__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: #E53935;
    text-align: center;
    margin-bottom: 25px;
    line-height: 1.3;
}

.page-huong-dan-dang-ky__section-intro {
    font-size: 1.05rem;
    line-height: 1.7;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #333333;
}

.page-huong-dan-dang-ky__benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-huong-dan-dang-ky__benefit-item {
    background-color: #F5F7FA;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-huong-dan-dang-ky__benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-huong-dan-dang-ky__benefit-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #E53935;
    margin-bottom: 15px;
}

.page-huong-dan-dang-ky__benefit-item p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #333333;
}

.page-huong-dan-dang-ky__guide-section {
    text-align: left;
}

.page-huong-dan-dang-ky__guide-step {
    margin-bottom: 45px;
    padding: 30px;
    background-color: #F5F7FA;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-huong-dan-dang-ky__step-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: #E53935;
    margin-bottom: 20px;
    text-align: center;
}

.page-huong-dan-dang-ky__guide-step p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: #333333;
}

.page-huong-dan-dang-ky__info-list {
    list-style: disc inside;
    margin-left: 20px;
    margin-bottom: 20px;
    color: #333333;
}

.page-huong-dan-dang-ky__info-list li {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 8px;
}

.page-huong-dan-dang-ky__info-list strong {
    color: #E53935;
}

.page-huong-dan-dang-ky__step-figure {
    margin: 25px auto;
    max-width: 800px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background-color: #fff;
    padding: 10px;
}

.page-huong-dan-dang-ky__step-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

.page-huong-dan-dang-ky__step-caption {
    font-size: 0.9rem;
    color: #666;
    text-align: center;
    margin-top: 10px;
    padding: 0 10px;
}

.page-huong-dan-dang-ky__troubleshoot-section,
.page-huong-dan-dang-ky__security-section {
    text-align: left;
}

.page-huong-dan-dang-ky__troubleshoot-item {
    margin-bottom: 30px;
    padding: 25px;
    background-color: #F5F7FA;
    border-left: 5px solid #FF5A4F;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-huong-dan-dang-ky__troubleshoot-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: #E53935;
    margin-bottom: 15px;
}

.page-huong-dan-dang-ky__troubleshoot-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: #333333;
}

.page-huong-dan-dang-ky__security-list {
    list-style: none;
    padding: 0;
}

.page-huong-dan-dang-ky__security-list li {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: #333333;
}

.page-huong-dan-dang-ky__security-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    top: 0;
}

.page-huong-dan-dang-ky__security-list strong {
    color: #E53935;
}

.page-huong-dan-dang-ky__cta-banner-section {
    background: linear-gradient(180deg, #E53935 0%, #FF5A4F 100%);
    color: #ffffff;
    text-align: center;
    padding: 80px 20px;
    margin-top: 60px;
    border-radius: 15px;
}

.page-huong-dan-dang-ky__section-title--light {
    color: #ffffff;
}

.page-huong-dan-dang-ky__section-intro--light {
    color: #f0f0f0;
}

.page-huong-dan-dang-ky__cta-buttons--center {
    margin-top: 40px;
}

.page-huong-dan-dang-ky__btn-primary--large,
.page-huong-dan-dang-ky__btn-secondary--large {
    padding: 18px 40px;
    font-size: 1.2rem;
    border-radius: 10px;
}

.page-huong-dan-dang-ky__faq-section {
    text-align: left;
}

details.page-huong-dan-dang-ky__faq-item {
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #E0E0E0;
    overflow: hidden;
    background: #FFFFFF;
}

details.page-huong-dan-dang-ky__faq-item summary.page-huong-dan-dang-ky__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: background-color 0.3s ease;
    color: #333333;
}

details.page-huong-dan-dang-ky__faq-item summary.page-huong-dan-dang-ky__faq-question::-webkit-details-marker {
    display: none;
}

details.page-huong-dan-dang-ky__faq-item summary.page-huong-dan-dang-ky__faq-question:hover {
    background: #f5f5f5;
}

.page-huong-dan-dang-ky__faq-qtext {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    text-align: left;
    color: #E53935;
}

.page-huong-dan-dang-ky__faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: #666;
    flex-shrink: 0;
    margin-left: 15px;
    width: 28px;
    text-align: center;
}

details.page-huong-dan-dang-ky__faq-item .page-huong-dan-dang-ky__faq-answer {
    padding: 0 20px 20px;
    background: #F5F7FA;
    border-radius: 0 0 5px 5px;
    color: #333333;
}

.page-huong-dan-dang-ky__faq-answer p {
    margin-bottom: 0;
    line-height: 1.6;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
    .page-huong-dan-dang-ky__hero-section {
        padding: 10px 15px 40px;
    }
    .page-huong-dan-dang-ky__main-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    .page-huong-dan-dang-ky__hero-description {
        font-size: 1rem;
    }
    .page-huong-dan-dang-ky__section {
        padding: 50px 15px;
        margin-top: 25px;
    }
    .page-huong-dan-dang-ky__section-title {
        font-size: clamp(1.6rem, 4vw, 2.2rem);
    }
    .page-huong-dan-dang-ky__section-intro {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    .page-huong-dan-dang-ky__benefits-grid {
        gap: 20px;
    }
    .page-huong-dan-dang-ky__benefit-item {
        padding: 25px;
    }
    .page-huong-dan-dang-ky__benefit-title {
        font-size: 1.2rem;
    }
    .page-huong-dan-dang-ky__guide-step {
        padding: 25px;
        margin-bottom: 30px;
    }
    .page-huong-dan-dang-ky__step-title {
        font-size: 1.4rem;
    }
    .page-huong-dan-dang-ky__troubleshoot-item {
        padding: 20px;
    }
    .page-huong-dan-dang-ky__troubleshoot-title {
        font-size: 1.3rem;
    }
    .page-huong-dan-dang-ky__cta-banner-section {
        padding: 60px 15px;
    }
    .page-huong-dan-dang-ky__btn-primary--large,
    .page-huong-dan-dang-ky__btn-secondary--large {
        padding: 16px 35px;
        font-size: 1.1rem;
    }
    details.page-huong-dan-dang-ky__faq-item summary.page-huong-dan-dang-ky__faq-question {
        padding: 16px 18px;
    }
    .page-huong-dan-dang-ky__faq-qtext {
        font-size: 15px;
    }
    .page-huong-dan-dang-ky__faq-toggle {
        font-size: 22px;
    }
    details.page-huong-dan-dang-ky__faq-item .page-huong-dan-dang-ky__faq-answer {
        padding: 0 18px 18px;
    }
}

@media (max-width: 849px) {
    .page-huong-dan-dang-ky__hero-image {
        object-fit: contain !important;
        aspect-ratio: unset !important;
    }
}

@media (max-width: 768px) {
    .page-huong-dan-dang-ky {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-huong-dan-dang-ky__hero-section {
        padding: 10px 15px 30px;
    }

    .page-huong-dan-dang-ky__hero-image-wrapper {
        margin-bottom: 20px;
    }

    .page-huong-dan-dang-ky__main-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: 15px;
    }

    .page-huong-dan-dang-ky__hero-description {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }

    .page-huong-dan-dang-ky__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 0 15px;
    }

    .page-huong-dan-dang-ky__btn-primary,
    .page-huong-dan-dang-ky__btn-secondary,
    .page-huong-dan-dang-ky a[class*="button"],
    .page-huong-dan-dang-ky a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding: 12px 25px;
        font-size: 1rem;
    }

    .page-huong-dan-dang-ky__section {
        padding: 40px 15px;
        margin-top: 20px;
        border-radius: 10px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-huong-dan-dang-ky__section-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
        margin-bottom: 20px;
    }

    .page-huong-dan-dang-ky__section-intro {
        font-size: 0.9rem;
        margin-bottom: 30px;
        max-width: 100%;
    }

    .page-huong-dan-dang-ky__benefits-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .page-huong-dan-dang-ky__benefit-item {
        padding: 20px;
    }

    .page-huong-dan-dang-ky__benefit-title {
        font-size: 1.1rem;
    }

    .page-huong-dan-dang-ky__benefit-item p {
        font-size: 0.9rem;
    }

    .page-huong-dan-dang-ky__guide-step {
        padding: 20px;
        margin-bottom: 25px;
    }

    .page-huong-dan-dang-ky__step-title {
        font-size: 1.3rem;
        margin-bottom: 15px;
    }

    .page-huong-dan-dang-ky__guide-step p {
        font-size: 0.95rem;
        margin-bottom: 15px;
    }

    .page-huong-dan-dang-ky__info-list {
        margin-left: 15px;
        margin-bottom: 15px;
    }

    .page-huong-dan-dang-ky__info-list li {
        font-size: 0.95rem;
    }

    .page-huong-dan-dang-ky__step-figure {
        margin: 20px auto;
        padding: 5px;
        max-width: 100%;
        box-sizing: border-box;
    }

    .page-huong-dan-dang-ky__step-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-huong-dan-dang-ky__step-caption {
        font-size: 0.85rem;
        padding: 0 5px;
    }

    .page-huong-dan-dang-ky__troubleshoot-item {
        padding: 18px;
        margin-bottom: 20px;
    }

    .page-huong-dan-dang-ky__troubleshoot-title {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }

    .page-huong-dan-dang-ky__troubleshoot-item p {
        font-size: 0.95rem;
    }

    .page-huong-dan-dang-ky__security-list li {
        font-size: 0.95rem;
        padding-left: 25px;
        margin-bottom: 10px;
    }

    .page-huong-dan-dang-ky__cta-banner-section {
        padding: 50px 15px;
        margin-top: 40px;
        border-radius: 10px;
    }

    .page-huong-dan-dang-ky__cta-buttons--center {
        margin-top: 30px;
    }

    .page-huong-dan-dang-ky__btn-primary--large,
    .page-huong-dan-dang-ky__btn-secondary--large {
        padding: 14px 30px;
        font-size: 1.05rem;
    }

    details.page-huong-dan-dang-ky__faq-item {
        margin-bottom: 10px;
        border-radius: 8px;
    }

    details.page-huong-dan-dang-ky__faq-item summary.page-huong-dan-dang-ky__faq-question {
        padding: 15px;
    }

    .page-huong-dan-dang-ky__faq-qtext {
        font-size: 15px;
    }

    .page-huong-dan-dang-ky__faq-toggle {
        font-size: 20px;
        margin-left: 10px;
        width: 24px;
    }

    details.page-huong-dan-dang-ky__faq-item .page-huong-dan-dang-ky__faq-answer {
        padding: 0 15px 15px;
    }

    .page-huong-dan-dang-ky img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-huong-dan-dang-ky__section,
    .page-huong-dan-dang-ky__card,
    .page-huong-dan-dang-ky__container,
    .page-huong-dan-dang-ky__hero-image-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-huong-dan-dang-ky__cta-buttons,
    .page-huong-dan-dang-ky__button-group,
    .page-huong-dan-dang-ky__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
    }

    .page-huong-dan-dang-ky__cta-buttons {
        flex-direction: column;
    }
}