:root {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg-color: #10233F;
  --text-main-color: #F3F8FF;
  --text-secondary-color: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy-color: #08162B;
}

.page-blog-huong-dan-dang-ky-u888vip1 {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Body is dark, so main text is light */
  background-color: var(--card-bg); /* Assuming shared.css sets body background to --card-bg */
}

.page-blog-huong-dan-dang-ky-u888vip1__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

/* HERO Section */
.page-blog-huong-dan-dang-ky-u888vip1__hero-section {
  padding-top: 10px; /* Small top padding, assuming body handles --header-offset */
  padding-bottom: 60px;
  background-color: var(--deep-navy-color);
  color: var(--text-main-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__hero-section .page-blog-huong-dan-dang-ky-u888vip1__container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding-top: 40px;
  padding-bottom: 40px;
}

.page-blog-huong-dan-dang-ky-u888vip1__hero-content {
  flex: 1 1 50%;
  min-width: 300px;
  text-align: left;
}

.page-blog-huong-dan-dang-ky-u888vip1__main-title {
  font-size: clamp(2em, 4vw, 3.2em); /* Responsive font size */
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-main-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__cta-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.page-blog-huong-dan-dang-ky-u888vip1__hero-image {
  flex: 1 1 40%;
  min-width: 300px;
  text-align: center;
}

.page-blog-huong-dan-dang-ky-u888vip1__hero-side-image {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* General Content Area */
.page-blog-huong-dan-dang-ky-u888vip1__content-area {
  max-width: 1170px;
  margin: 0 auto;
  padding: 60px 16px;
  box-sizing: border-box;
  background-color: var(--card-bg-color); /* Dark background for content area */
  color: var(--text-main-color); /* Light text for dark background */
}

.page-blog-huong-dan-dang-ky-u888vip1__content-area p {
  margin-bottom: 1em;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__section-title {
  font-size: 2.2em;
  font-weight: 700;
  color: var(--gold-color);
  margin-bottom: 30px;
  text-align: center;
}

/* Benefits List */
.page-blog-huong-dan-dang-ky-u888vip1__benefits-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-blog-huong-dan-dang-ky-u888vip1__benefit-item {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-blog-huong-dan-dang-ky-u888vip1__benefit-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-blog-huong-dan-dang-ky-u888vip1__benefit-title {
  font-size: 1.5em;
  color: var(--gold-color);
  margin-bottom: 15px;
}

.page-blog-huong-dan-dang-ky-u888vip1__benefit-item p {
  color: var(--text-secondary-color);
}

/* Guide Section */
.page-blog-huong-dan-dang-ky-u888vip1__guide-section {
  display: flex;
  flex-direction: column;
  gap: 50px;
  margin-top: 40px;
}

.page-blog-huong-dan-dang-ky-u888vip1__guide-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 30px;
  background-color: var(--deep-navy-color);
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.page-blog-huong-dan-dang-ky-u888vip1__guide-step:nth-child(even) {
  background-color: var(--primary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__guide-title {
  font-size: 1.8em;
  color: var(--gold-color);
  margin-bottom: 20px;
}

.page-blog-huong-dan-dang-ky-u888vip1__guide-step p {
  max-width: 800px;
  margin-bottom: 25px;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__info-list {
  list-style: disc inside;
  text-align: left;
  margin-bottom: 20px;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__info-list li {
  margin-bottom: 8px;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__guide-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  margin-top: 15px;
}

/* FAQ Section */
.page-blog-huong-dan-dang-ky-u888vip1__faq-section {
  margin-top: 40px;
  margin-bottom: 40px;
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-item {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: var(--text-main-color);
  cursor: pointer;
  background-color: var(--primary-color);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s ease;
  list-style: none; /* For <summary> tag */
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-question::-webkit-details-marker {
  display: none; /* Hide default marker for <summary> */
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-question:hover {
  background-color: var(--secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-toggle {
  font-size: 1.5em;
  font-weight: bold;
  color: var(--gold-color);
  margin-left: 15px;
}

.page-blog-huong-dan-dang-ky-u888vip1__faq-answer {
  padding: 20px 25px;
  font-size: 1em;
  color: var(--text-secondary-color);
  background-color: var(--card-bg-color);
  border-top: 1px solid var(--divider-color);
}

/* Safety Tips List */
.page-blog-huong-dan-dang-ky-u888vip1__safety-tips-list {
  list-style: disc inside;
  padding-left: 20px;
  margin-top: 20px;
  margin-bottom: 40px;
  color: var(--text-secondary-color);
}

.page-blog-huong-dan-dang-ky-u888vip1__safety-tips-list li {
  margin-bottom: 10px;
  color: var(--text-secondary-color);
}

/* CTA Section */
.page-blog-huong-dan-dang-ky-u888vip1__cta-section {
  text-align: center;
  padding: 40px 20px;
  background-color: var(--deep-navy-color);
  border-radius: 12px;
  margin-top: 40px;
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* Related Articles */
.page-blog-huong-dan-dang-ky-u888vip1__related-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-blog-huong-dan-dang-ky-u888vip1__article-card {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-blog-huong-dan-dang-ky-u888vip1__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-blog-huong-dan-dang-ky-u888vip1__card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.page-blog-huong-dan-dang-ky-u888vip1__card-title {
  font-size: 1.3em;
  font-weight: 600;
  margin: 15px;
  color: var(--gold-color);
  flex-grow: 1;
}

.page-blog-huong-dan-dang-ky-u888vip1__card-title a {
  color: inherit;
  text-decoration: none;
}

.page-blog-huong-dan-dang-ky-u888vip1__card-title a:hover {
  text-decoration: underline;
}

.page-blog-huong-dan-dang-ky-u888vip1__card-date {
  font-size: 0.9em;
  color: var(--text-secondary-color);
  margin: 0 15px 15px;
}

/* Buttons */
.page-blog-huong-dan-dang-ky-u888vip1__btn-primary,
.page-blog-huong-dan-dang-ky-u888vip1__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-blog-huong-dan-dang-ky-u888vip1__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-blog-huong-dan-dang-ky-u888vip1__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-blog-huong-dan-dang-ky-u888vip1__btn-secondary {
  background-color: transparent;
  color: var(--gold-color);
  border: 2px solid var(--gold-color);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.page-blog-huong-dan-dang-ky-u888vip1__btn-secondary:hover {
  background-color: var(--gold-color);
  color: var(--deep-navy-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Universal image responsive styles */
.page-blog-huong-dan-dang-ky-u888vip1 img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-blog-huong-dan-dang-ky-u888vip1__main-title {
    font-size: clamp(1.8em, 4.5vw, 2.8em);
  }

  .page-blog-huong-dan-dang-ky-u888vip1__section-title {
    font-size: 2em;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__benefits-list {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .page-blog-huong-dan-dang-ky-u888vip1__related-articles {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-blog-huong-dan-dang-ky-u888vip1 {
    font-size: 16px;
    line-height: 1.6;
  }

  /* HERO Section - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__hero-section {
    padding-top: 10px !important; /* Ensure small top padding */
    padding-bottom: 40px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__hero-section .page-blog-huong-dan-dang-ky-u888vip1__container {
    flex-direction: column;
    text-align: center;
    padding-top: 20px;
    padding-bottom: 20px;
    gap: 30px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__hero-content {
    order: 2; /* Content below image */
    flex: 1 1 100%;
    text-align: center;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__hero-image {
    order: 1; /* Image above content */
    flex: 1 1 100%;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
  }

  .page-blog-huong-dan-dang-ky-u888vip1__description {
    font-size: 1em;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  /* Buttons - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__btn-primary,
  .page-blog-huong-dan-dang-ky-u888vip1__btn-secondary,
  .page-blog-huong-dan-dang-ky-u888vip1 a[class*="button"],
  .page-blog-huong-dan-dang-ky-u888vip1 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-left: 15px;
    padding-right: 15px;
  }

  /* General Content Area - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__content-area {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__section-title {
    font-size: 1.8em;
    margin-bottom: 20px;
  }

  /* Benefits List - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__benefits-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Guide Section - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__guide-section {
    gap: 30px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__guide-step {
    padding: 20px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__guide-title {
    font-size: 1.5em;
  }

  /* FAQ Section - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__faq-answer {
    padding: 15px 20px;
  }

  /* Related Articles - Mobile */
  .page-blog-huong-dan-dang-ky-u888vip1__related-articles {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__card-image {
    height: 160px; /* Adjust height for mobile */
  }

  .page-blog-huong-dan-dang-ky-u888vip1__card-title {
    font-size: 1.2em;
  }

  /* Universal Image Responsive */
  .page-blog-huong-dan-dang-ky-u888vip1 img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-blog-huong-dan-dang-ky-u888vip1__container,
  .page-blog-huong-dan-dang-ky-u888vip1__card,
  .page-blog-huong-dan-dang-ky-u888vip1__section,
  .page-blog-huong-dan-dang-ky-u888vip1__box {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Specific for CTA buttons container */
  .page-blog-huong-dan-dang-ky-u888vip1__cta-section {
    padding: 30px 15px;
  }

  .page-blog-huong-dan-dang-ky-u888vip1__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
}