/* Base styles */
.page-blog-huong-dan-dang-ky-open88a1 {
    color: #333333;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f9f9f9;
}

.page-blog-huong-dan-dang-ky-open88a1__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Hero Section */
.page-blog-huong-dan-dang-ky-open88a1__hero-section {
    padding-top: 10px;
    background-color: #26A9E0;
    color: #FFFFFF;
    text-align: center;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-blog-huong-dan-dang-ky-open88a1__hero-image-wrapper {
    width: 100%;
    max-height: 500px;
    overflow: hidden;
}

.page-blog-huong-dan-dang-ky-open88a1__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    filter: brightness(0.7);
}

.page-blog-huong-dan-dang-ky-open88a1__hero-content {
    padding: 40px 20px;
    max-width: 900px;
    width: 100%;
    box-sizing: border-box;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
    background-color: #26A9E0;
    border-radius: 0 0 15px 15px;
    margin-top: -5px;
}

.page-blog-huong-dan-dang-ky-open88a1__main-title {
    font-size: clamp(2.5em, 5vw, 3.2em);
    margin-bottom: 15px;
    line-height: 1.2;
    font-weight: 700;
    color: #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__subtitle {
    font-size: 1.3em;
    margin-bottom: 30px;
    color: #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.page-blog-huong-dan-dang-ky-open88a1__btn-primary,
.page-blog-huong-dan-dang-ky-open88a1__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-blog-huong-dan-dang-ky-open88a1__btn-primary {
    background-color: #EA7C07;
    color: #FFFFFF;
    border: 2px solid #EA7C07;
}

.page-blog-huong-dan-dang-ky-open88a1__btn-primary:hover {
    background-color: #d66f06;
    border-color: #d66f06;
}

.page-blog-huong-dan-dang-ky-open88a1__btn-secondary {
    background-color: transparent;
    color: #FFFFFF;
    border: 2px solid #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__btn-secondary:hover {
    background-color: #FFFFFF;
    color: #26A9E0;
}

/* General Section Styles */
.page-blog-huong-dan-dang-ky-open88a1__section {
    padding: 60px 0;
    background-color: #FFFFFF;
    margin-bottom: 20px;
}

.page-blog-huong-dan-dang-ky-open88a1__intro-section {
    background-color: #f9f9f9;
}

.page-blog-huong-dan-dang-ky-open88a1__registration-guide-section {
    background-color: #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__tips-section {
    background-color: #f9f9f9;
}

.page-blog-huong-dan-dang-ky-open88a1__faq-section {
    background-color: #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__conclusion-section {
    background-color: #26A9E0;
    color: #FFFFFF;
}
.page-blog-huong-dan-dang-ky-open88a1__conclusion-section .page-blog-huong-dan-dang-ky-open88a1__section-title,
.page-blog-huong-dan-dang-ky-open88a1__conclusion-section p {
    color: #FFFFFF;
}

.page-blog-huong-dan-dang-ky-open88a1__section-title {
    font-size: clamp(2em, 4vw, 2.5em);
    color: #26A9E0;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.page-blog-huong-dan-dang-ky-open88a1__content-area p {
    font-size: 1.1em;
    margin-bottom: 20px;
    text-align: justify;
    color: #333333;
}

/* Features Grid */
.page-blog-huong-dan-dang-ky-open88a1__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-blog-huong-dan-dang-ky-open88a1__feature-item {
    background: #FFFFFF;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.page-blog-huong-dan-dang-ky-open88a1__feature-item:hover {
    transform: translateY(-10px);
}

.page-blog-huong-dan-dang-ky-open88a1__feature-item img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    object-fit: cover;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.page-blog-huong-dan-dang-ky-open88a1__feature-item h3 {
    font-size: 1.5em;
    color: #26A9E0;
    margin-bottom: 15px;
}

.page-blog-huong-dan-dang-ky-open88a1__feature-item p {
    font-size: 1em;
    color: #555555;
    text-align: center;
}

/* Step-by-Step Guide */
.page-blog-huong-dan-dang-ky-open88a1__step-by-step {
    margin-top: 40px;
}

.page-blog-huong-dan-dang-ky-open88a1__step-item {
    background: #FFFFFF;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-blog-huong-dan-dang-ky-open88a1__step-number {
    width: 60px;
    height: 60px;
    background-color: #26A9E0;
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 20px;
}

.page-blog-huong-dan-dang-ky-open88a1__step-title {
    font-size: 1.8em;
    color: #26A9E0;
    margin-bottom: 20px;
}

.page-blog-huong-dan-dang-ky-open88a1__step-item p {
    font-size: 1.1em;
    color: #555555;
    margin-bottom: 20px;
    text-align: justify;
}

.page-blog-huong-dan-dang-ky-open88a1__step-item ul {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
    text-align: left;
    width: 100%;
    max-width: 600px;
}

.page-blog-huong-dan-dang-ky-open88a1__step-item li {
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #555555;
}

.page-blog-huong-dan-dang-ky-open88a1__step-item img {
    max-width: 800px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 20px;
    object-fit: contain;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.page-blog-huong-dan-dang-ky-open88a1__cta-buttons--bottom {
    margin-top: 40px;
}

/* Tips List */
.page-blog-huong-dan-dang-ky-open88a1__tips-list {
    list-style: none;
    padding: 0;
    margin-top: 30px;
}

.page-blog-huong-dan-dang-ky-open88a1__tips-list li {
    background: #FFFFFF;
    border-left: 5px solid #26A9E0;
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    font-size: 1.1em;
    color: #333333;
    text-align: justify;
}

.page-blog-huong-dan-dang-ky-open88a1__tips-list li strong {
    color: #26A9E0;
}

/* FAQ Section */
details.page-blog-huong-dan-dang-ky-open88a1__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
}
details.page-blog-huong-dan-dang-ky-open88a1__faq-item summary.page-blog-huong-dan-dang-ky-open88a1__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;
}
details.page-blog-huong-dan-dang-ky-open88a1__faq-item summary.page-blog-huong-dan-dang-ky-open88a1__faq-question::-webkit-details-marker {
  display: none;
}
details.page-blog-huong-dan-dang-ky-open88a1__faq-item summary.page-blog-huong-dan-dang-ky-open88a1__faq-question:hover {
  background: #f5f5f5;
}
.page-blog-huong-dan-dang-ky-open88a1__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #333333;
}
.page-blog-huong-dan-dang-ky-open88a1__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-blog-huong-dan-dang-ky-open88a1__faq-item .page-blog-huong-dan-dang-ky-open88a1__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
}
.page-blog-huong-dan-dang-ky-open88a1__faq-answer p {
    margin-top: 10px;
    margin-bottom: 0;
    font-size: 1em;
    color: #555555;
}

/* Conclusion Section specific styles */
.page-blog-huong-dan-dang-ky-open88a1__conclusion-section .page-blog-huong-dan-dang-ky-open88a1__btn-secondary {
    border-color: #FFFFFF;
    color: #FFFFFF;
}
.page-blog-huong-dan-dang-ky-open88a1__conclusion-section .page-blog-huong-dan-dang-ky-open88a1__btn-secondary:hover {
    background-color: #FFFFFF;
    color: #26A9E0;
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-blog-huong-dan-dang-ky-open88a1__main-title {
        font-size: clamp(2.2em, 4.5vw, 2.8em);
    }
    .page-blog-huong-dan-dang-ky-open88a1__subtitle {
        font-size: 1.1em;
    }
    .page-blog-huong-dan-dang-ky-open88a1__section-title {
        font-size: clamp(1.8em, 3.5vw, 2.2em);
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-title {
        font-size: 1.5em;
    }
}

@media (max-width: 768px) {
    /* General responsive adjustments */
    .page-blog-huong-dan-dang-ky-open88a1__container {
        padding: 0 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-blog-huong-dan-dang-ky-open88a1__section {
        padding: 40px 0;
        margin-bottom: 15px;
    }
    .page-blog-huong-dan-dang-ky-open88a1 p,
    .page-blog-huong-dan-dang-ky-open88a1 li {
        font-size: 1em;
    }

    /* HERO Main Image Section */
    .page-blog-huong-dan-dang-ky-open88a1__hero-section {
        padding-top: 10px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__hero-image-wrapper {
        max-height: 300px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__hero-image {
        object-fit: contain !important;
        aspect-ratio: unset !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-blog-huong-dan-dang-ky-open88a1__hero-content {
        padding: 30px 15px;
        margin-top: -5px;
        text-shadow: none;
        background-color: #26A9E0; /* Explicit background for contrast */
        border-radius: 0 0 10px 10px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__main-title {
        font-size: clamp(2em, 8vw, 2.5em);
        margin-bottom: 10px;
        text-align: center;
    }
    .page-blog-huong-dan-dang-ky-open88a1__subtitle {
        font-size: 1em;
        margin-bottom: 20px;
        text-align: center;
    }
    .page-blog-huong-dan-dang-ky-open88a1__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__btn-primary,
    .page-blog-huong-dan-dang-ky-open88a1__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px;
        font-size: 1em;
    }

    /* Section Title */
    .page-blog-huong-dan-dang-ky-open88a1__section-title {
        font-size: clamp(1.8em, 7vw, 2.2em);
        margin-bottom: 30px;
        padding: 0 15px;
        text-align: center;
    }

    /* Features Grid */
    .page-blog-huong-dan-dang-ky-open88a1__features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        overflow-x: hidden !important;
    }
    .page-blog-huong-dan-dang-ky-open88a1__feature-item {
        padding: 20px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__feature-item img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    /* Step-by-Step Guide */
    .page-blog-huong-dan-dang-ky-open88a1__step-item {
        padding: 20px;
        margin-bottom: 20px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-number {
        width: 50px;
        height: 50px;
        font-size: 1.8em;
        margin-bottom: 15px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-title {
        font-size: 1.5em;
        margin-bottom: 15px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-item img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-item ul {
        padding-left: 20px;
    }
    .page-blog-huong-dan-dang-ky-open88a1__step-item li {
        font-size: 1em;
    }

    /* Tips List */
    .page-blog-huong-dan-dang-ky-open88a1__tips-list li {
        padding: 12px 15px;
        font-size: 1em;
    }

    /* FAQ Section */
    details.page-blog-huong-dan-dang-ky-open88a1__faq-item summary.page-blog-huong-dan-dang-ky-open88a1__faq-question { padding: 15px; }
    .page-blog-huong-dan-dang-ky-open88a1__faq-qtext { font-size: 15px; }
    .page-blog-huong-dan-dang-ky-open88a1__faq-answer { padding: 0 15px 15px; }
    .page-blog-huong-dan-dang-ky-open88a1__faq-answer p { font-size: 0.95em; }

    /* Universal image and container rules for mobile to prevent overflow */
    .page-blog-huong-dan-dang-ky-open88a1 img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-blog-huong-dan-dang-ky-open88a1__section,
    .page-blog-huong-dan-dang-ky-open88a1__card,
    .page-blog-huong-dan-dang-ky-open88a1__container,
    .page-blog-huong-dan-dang-ky-open88a1__content-area,
    .page-blog-huong-dan-dang-ky-open88a1__features-grid,
    .page-blog-huong-dan-dang-ky-open88a1__step-by-step,
    .page-blog-huong-dan-dang-ky-open88a1__tips-list,
    .page-blog-huong-dan-dang-ky-open88a1__faq-list {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
    }
}