.page-index-about-online-xoc-dia {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

.page-index-about-online-xoc-dia__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-index-about-online-xoc-dia__hero-section {
  background: linear-gradient(135deg, #1A2B4C, #2c4a7e);
  color: #fff;
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-index-about-online-xoc-dia__hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('[GALLERY:bg:abstract,geometric,subtle_pattern]') no-repeat center center/cover;
  opacity: 0.1;
  z-index: 0;
}

.page-index-about-online-xoc-dia__hero-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  font-weight: bold;
  position: relative;
  z-index: 1;
}

.page-index-about-online-xoc-dia__highlight {
  color: #FF8C00;
}

.page-index-about-online-xoc-dia__hero-subtitle {
  font-size: 1.5em;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.page-index-about-online-xoc-dia__button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.3s ease;
  position: relative;
  z-index: 1;
  font-size: 1.1em;
}

.page-index-about-online-xoc-dia__button--primary {
  background-color: #FF8C00;
  color: #1A2B4C;
  border: 2px solid #FF8C00;
}

.page-index-about-online-xoc-dia__button--primary:hover {
  background-color: #e57e00;
  transform: translateY(-3px);
}

.page-index-about-online-xoc-dia__button--secondary {
  background-color: #1A2B4C;
  color: #fff;
  border: 2px solid #FF8C00;
}

.page-index-about-online-xoc-dia__button--secondary:hover {
  background-color: #0d1a33;
  transform: translateY(-3px);
}

.page-index-about-online-xoc-dia__intro-section,
.page-index-about-online-xoc-dia__features-section,
.page-index-about-online-xoc-dia__gameplay-section,
.page-index-about-online-xoc-dia__tips-section,
.page-index-about-online-xoc-dia__responsible-gambling-section {
  padding: 60px 0;
  background-color: #fff;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.page-index-about-online-xoc-dia__intro-section {
  margin-top: -60px;
  position: relative;
  z-index: 2;
}

.page-index-about-online-xoc-dia__section-title {
  font-size: 2.5em;
  color: #1A2B4C;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.page-index-about-online-xoc-dia__section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background-color: #FF8C00;
  margin: 15px auto 0;
  border-radius: 2px;
}

.page-index-about-online-xoc-dia__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-index-about-online-xoc-dia__content-grid--reverse {
  grid-template-columns: 1fr 1fr;
}

.page-index-about-online-xoc-dia__text-content p {
  margin-bottom: 15px;
  font-size: 1.1em;
  color: #555;
}

.page-index-about-online-xoc-dia__text-content ul,
.page-index-about-online-xoc-dia__text-content ol {
  list-style-position: inside;
  padding-left: 0;
  margin-bottom: 15px;
}

.page-index-about-online-xoc-dia__text-content li {
  margin-bottom: 8px;
  font-size: 1.1em;
  color: #555;
}

.page-index-about-online-xoc-dia__image-wrapper {
  text-align: center;
}

.page-index-about-online-xoc-dia__image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-index-about-online-xoc-dia__features-grid,
.page-index-about-online-xoc-dia__tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-index-about-online-xoc-dia__feature-card,
.page-index-about-online-xoc-dia__tip-card {
  background-color: #f4f7fa;
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index-about-online-xoc-dia__feature-card:hover,
.page-index-about-online-xoc-dia__tip-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.page-index-about-online-xoc-dia__feature-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.1));
}

.page-index-about-online-xoc-dia__feature-title,
.page-index-about-online-xoc-dia__tip-title {
  font-size: 1.5em;
  color: #1A2B4C;
  margin-bottom: 15px;
}

.page-index-about-online-xoc-dia__feature-description,
.page-index-about-online-xoc-dia__tip-description {
  color: #555;
  font-size: 1em;
}

.page-index-about-online-xoc-dia__ordered-list {
  list-style-type: decimal;
  padding-left: 25px;
}

.page-index-about-online-xoc-dia__ordered-list li {
  margin-bottom: 10px;
  font-size: 1.1em;
  color: #555;
}

.page-index-about-online-xoc-dia__cta-wrapper {
  text-align: center;
  margin-top: 50px;
}

.page-index-about-online-xoc-dia__inline-link {
  color: #FF8C00;
  text-decoration: none;
  font-weight: bold;
}

.page-index-about-online-xoc-dia__inline-link:hover {
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 992px) {
  .page-index-about-online-xoc-dia__hero-title {
    font-size: 2.8em;
  }
  .page-index-about-online-xoc-dia__hero-subtitle {
    font-size: 1.2em;
  }
  .page-index-about-online-xoc-dia__section-title {
    font-size: 2em;
  }
  .page-index-about-online-xoc-dia__content-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .page-index-about-online-xoc-dia__content-grid--reverse {
    grid-template-columns: 1fr;
  }
  .page-index-about-online-xoc-dia__content-grid--reverse .page-index-about-online-xoc-dia__image-wrapper {
    order: -1;
  }
}

@media (max-width: 768px) {
  .page-index-about-online-xoc-dia__hero-title {
    font-size: 2.2em;
  }
  .page-index-about-online-xoc-dia__hero-subtitle {
    font-size: 1em;
  }
  .page-index-about-online-xoc-dia__button {
    padding: 12px 25px;
    font-size: 1em;
  }
  .page-index-about-online-xoc-dia__section-title {
    font-size: 1.8em;
  }
  .page-index-about-online-xoc-dia__features-grid,
  .page-index-about-online-xoc-dia__tips-grid {
    grid-template-columns: 1fr;
  }
  .page-index-about-online-xoc-dia__feature-card,
  .page-index-about-online-xoc-dia__tip-card {
    padding: 25px;
  }
}

@media (max-width: 480px) {
  .page-index-about-online-xoc-dia__hero-section {
    padding: 80px 0 50px;
  }
  .page-index-about-online-xoc-dia__hero-title {
    font-size: 1.8em;
  }
  .page-index-about-online-xoc-dia__hero-subtitle {
    font-size: 0.9em;
  }
  .page-index-about-online-xoc-dia__section-title {
    font-size: 1.5em;
    margin-bottom: 30px;
  }
  .page-index-about-online-xoc-dia__intro-section,
  .page-index-about-online-xoc-dia__features-section,
  .page-index-about-online-xoc-dia__gameplay-section,
  .page-index-about-online-xoc-dia__tips-section,
  .page-index-about-online-xoc-dia__responsible-gambling-section {
    padding: 40px 0;
  }
  .page-index-about-online-xoc-dia__text-content p,
  .page-index-about-online-xoc-dia__text-content li,
  .page-index-about-online-xoc-dia__ordered-list li {
    font-size: 0.95em;
  }
}