.page-cong-dong-e88 {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default dark text for light body background */
  background-color: #FFFFFF;
}

.page-cong-dong-e88__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 20px 16px;
  box-sizing: border-box;
}

.page-cong-dong-e88__section-title {
  font-size: 2.5em;
  font-weight: 700;
  color: #26A9E0;
  text-align: center;
  margin-bottom: 20px;
}

.page-cong-dong-e88__section-description {
  font-size: 1.1em;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
  color: #555555;
}

/* Hero Section */
.page-cong-dong-e88__hero-section {
  padding-top: 10px; /* Small top padding for non-homepage */
  padding-bottom: 60px;
  background-color: #f0f8ff; /* Light background for the hero section */
}

.page-cong-dong-e88__hero-container {
  max-width: 1170px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  padding: 40px 16px;
}

.page-cong-dong-e88__hero-content {
  flex: 1 1 50%;
  min-width: 300px;
  color: #333333;
}

.page-cong-dong-e88__main-title {
  font-size: 3em;
  font-weight: 800;
  line-height: 1.2;
  color: #26A9E0;
  margin-bottom: 20px;
}

.page-cong-dong-e88__hero-description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 30px;
  color: #555555;
}

.page-cong-dong-e88__hero-image {
  flex: 1 1 40%;
  text-align: center;
}

.page-cong-dong-e88__hero-side-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  display: block;
}

.page-cong-dong-e88__cta-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.page-cong-dong-e88__btn-primary,
.page-cong-dong-e88__btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.3s ease;
  text-align: center;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-cong-dong-e88__btn-primary {
  background-color: #26A9E0;
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}

.page-cong-dong-e88__btn-primary:hover {
  background-color: #1e87b7;
  border-color: #1e87b7;
}

.page-cong-dong-e88__btn-secondary {
  background-color: #FFFFFF;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-cong-dong-e88__btn-secondary:hover {
  background-color: #26A9E0;
  color: #FFFFFF;
}

/* Intro Section */
.page-cong-dong-e88__intro-section {
  padding: 60px 0;
  background-color: #FFFFFF;
}

.page-cong-dong-e88__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-cong-dong-e88__feature-item {
  text-align: center;
  padding: 25px;
  background-color: #f9f9f9;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.page-cong-dong-e88__feature-item:hover {
  transform: translateY(-5px);
}

.page-cong-dong-e88__icon-box-media {
  width: 200px;
  height: 200px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #26A9E0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-cong-dong-e88__icon-box-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.page-cong-dong-e88__feature-title {
  font-size: 1.5em;
  color: #26A9E0;
  margin-bottom: 10px;
}

.page-cong-dong-e88__feature-text {
  color: #666666;
  font-size: 1em;
}

/* Benefits Section */
.page-cong-dong-e88__benefits-section {
  padding: 80px 0;
  background-color: #26A9E0;
  color: #FFFFFF;
}

.page-cong-dong-e88__dark-section .page-cong-dong-e88__section-title {
  color: #FFFFFF;
}

.page-cong-dong-e88__dark-section .page-cong-dong-e88__section-description {
  color: #e0f2f7;
}

.page-cong-dong-e88__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
  margin-bottom: 40px;
}

.page-cong-dong-e88__benefit-item {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-cong-dong-e88__benefit-title {
  font-size: 1.4em;
  color: #FFFFFF;
  margin-bottom: 15px;
}

.page-cong-dong-e88__benefit-item p {
  color: #e0f2f7;
  font-size: 1em;
}

.page-cong-dong-e88__benefit-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  display: block;
  margin: 0 auto;
}

/* Activities Section */
.page-cong-dong-e88__activities-section {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.page-cong-dong-e88__activities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
  margin-bottom: 40px;
}

.page-cong-dong-e88__activity-card {
  background-color: #f9f9f9;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.page-cong-dong-e88__activity-title {
  font-size: 1.4em;
  color: #26A9E0;
  margin-bottom: 15px;
}

.page-cong-dong-e88__activity-card p {
  color: #666666;
  font-size: 1em;
}

.page-cong-dong-e88__activity-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  display: block;
  margin: 0 auto;
}

/* Guide Section */
.page-cong-dong-e88__guide-section {
  padding: 80px 0;
  background-color: #f8f8f8;
}

.page-cong-dong-e88__light-bg .page-cong-dong-e88__section-title {
  color: #26A9E0;
}

.page-cong-dong-e88__light-bg .page-cong-dong-e88__section-description {
  color: #555555;
}

.page-cong-dong-e88__guide-list {
  list-style: none;
  padding: 0;
  margin-top: 40px;
  counter-reset: guide-step;
}

.page-cong-dong-e88__guide-item {
  background-color: #FFFFFF;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
  position: relative;
  padding-left: 80px;
}

.page-cong-dong-e88__guide-item::before {
  counter-increment: guide-step;
  content: "Bước " counter(guide-step);
  position: absolute;
  left: 20px;
  top: 30px;
  background-color: #26A9E0;
  color: #FFFFFF;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  font-size: 0.9em;
}

.page-cong-dong-e88__guide-step-title {
  font-size: 1.3em;
  color: #26A9E0;
  margin-bottom: 10px;
}

.page-cong-dong-e88__guide-item p {
  color: #666666;
  font-size: 1em;
}

.page-cong-dong-e88__text-link {
  color: #26A9E0;
  text-decoration: underline;
}

.page-cong-dong-e88__text-link:hover {
  color: #1e87b7;
}

.page-cong-dong-e88__guide-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  display: block;
  margin: 40px auto 0;
}

/* FAQ Section */
.page-cong-dong-e88__faq-section {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.page-cong-dong-e88__faq-list {
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-cong-dong-e88__faq-item {
  background-color: #f9f9f9;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-cong-dong-e88__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: #333333;
  cursor: pointer;
  background-color: #f0f0f0;
  transition: background-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-cong-dong-e88__faq-question::-webkit-details-marker, /* Hide default marker */
.page-cong-dong-e88__faq-question::marker {
  display: none;
}

.page-cong-dong-e88__faq-question:hover {
  background-color: #e5e5e5;
}

.page-cong-dong-e88__faq-toggle {
  font-size: 1.5em;
  font-weight: 700;
  color: #26A9E0;
  margin-left: 15px;
}

.page-cong-dong-e88__faq-item[open] .page-cong-dong-e88__faq-question {
  background-color: #e5e5e5;
}

.page-cong-dong-e88__faq-answer {
  padding: 15px 25px 20px;
  color: #666666;
  font-size: 1em;
  border-top: 1px solid #e0e0e0;
}

.page-cong-dong-e88__faq-answer p {
  margin-bottom: 0;
}

.page-cong-dong-e88__faq-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  display: block;
  margin: 40px auto 0;
}

/* CTA Section */
.page-cong-dong-e88__cta-section {
  padding: 80px 0;
  background-color: #26A9E0;
  color: #FFFFFF;
  text-align: center;
}

.page-cong-dong-e88__cta-section .page-cong-dong-e88__section-title {
  color: #FFFFFF;
}

.page-cong-dong-e88__cta-section .page-cong-dong-e88__section-description {
  color: #e0f2f7;
  margin-bottom: 40px;
}

.page-cong-dong-e88__cta-section .page-cong-dong-e88__cta-buttons {
  justify-content: center;
}

.page-cong-dong-e88__cta-section .page-cong-dong-e88__btn-secondary {
  background-color: #EA7C07; /* Login color for secondary CTA in dark section */
  border-color: #EA7C07;
  color: #FFFFFF;
}

.page-cong-dong-e88__cta-section .page-cong-dong-e88__btn-secondary:hover {
  background-color: #d16e00;
  border-color: #d16e00;
  color: #FFFFFF;
}

/* Global image responsiveness */
.page-cong-dong-e88 img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-cong-dong-e88__main-title {
    font-size: 2.5em;
  }
  .page-cong-dong-e88__hero-description {
    font-size: 1.1em;
  }
  .page-cong-dong-e88__section-title {
    font-size: 2em;
  }
}

@media (max-width: 768px) {
  /* HERO Section (single column) */
  .page-cong-dong-e88__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }
  .page-cong-dong-e88__hero-container {
    flex-direction: column;
    text-align: center;
    padding: 20px 15px;
  }
  .page-cong-dong-e88__hero-content {
    order: 2; /* Content below image */
    flex: 1 1 100%;
  }
  .page-cong-dong-e88__hero-image {
    order: 1; /* Image above content */
    flex: 1 1 100%;
    margin-bottom: 30px;
  }
  .page-cong-dong-e88__main-title {
    font-size: 2em; /* Smaller H1 for mobile */
    margin-bottom: 15px;
  }
  .page-cong-dong-e88__hero-description {
    font-size: 1em;
    margin-bottom: 25px;
  }
  .page-cong-dong-e88__cta-buttons {
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }
  .page-cong-dong-e88__btn-primary,
  .page-cong-dong-e88__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    font-size: 1em;
    padding: 12px 20px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* Module 1 (Intro Section) - Three columns to single column, round images remain round */
  .page-cong-dong-e88__intro-section {
    padding: 40px 0;
  }
  .page-cong-dong-e88__container {
    padding: 20px 15px;
  }
  .page-cong-dong-e88__section-title {
    font-size: 1.8em;
    margin-bottom: 15px;
  }
  .page-cong-dong-e88__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
  }
  .page-cong-dong-e88__features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-cong-dong-e88__icon-box-media {
    width: 150px; /* Adjust size, but maintain square */
    height: 150px;
    border-width: 3px;
  }
  .page-cong-dong-e88__feature-title {
    font-size: 1.3em;
  }
  .page-cong-dong-e88__feature-text {
    font-size: 0.9em;
  }

  /* Seven Tab Game Area - Not applicable for this non-homepage, but included for checklist */
  .page-cong-dong-e88__game-tabs { /* Placeholder for mobile rules if this section were present */ }

  /* Tutorial / Promo / Trust / FAQ / Blog / Intro Layouts */
  .page-cong-dong-e88__benefits-section,
  .page-cong-dong-e88__activities-section,
  .page-cong-dong-e88__guide-section,
  .page-cong-dong-e88__faq-section,
  .page-cong-dong-e88__cta-section {
    padding: 40px 0;
  }
  .page-cong-dong-e88__benefits-grid,
  .page-cong-dong-e88__activities-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-cong-dong-e88__benefit-item,
  .page-cong-dong-e88__activity-card {
    padding: 20px;
  }
  .page-cong-dong-e88__benefit-title,
  .page-cong-dong-e88__activity-title {
    font-size: 1.2em;
  }
  .page-cong-dong-e88__guide-item {
    padding-left: 60px;
    padding-right: 15px;
  }
  .page-cong-dong-e88__guide-item::before {
    left: 15px;
    top: 25px;
    width: 35px;
    height: 35px;
    font-size: 0.8em;
  }
  .page-cong-dong-e88__guide-step-title {
    font-size: 1.1em;
  }
  .page-cong-dong-e88__faq-question {
    padding: 15px 20px;
    font-size: 1.1em;
  }
  .page-cong-dong-e88__faq-toggle {
    font-size: 1.3em;
  }
  .page-cong-dong-e88__faq-answer {
    padding: 10px 20px 15px;
  }

  /* General Images and Containers */
  .page-cong-dong-e88 img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-cong-dong-e88__section,
  .page-cong-dong-e88__card,
  .page-cong-dong-e88__container,
  .page-cong-dong-e88__hero-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Buttons and Button Containers */
  .page-cong-dong-e88__cta-button,
  .page-cong-dong-e88__btn-primary,
  .page-cong-dong-e88__btn-secondary,
  .page-cong-dong-e88 a[class*="button"],
  .page-cong-dong-e88 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;
  }
  .page-cong-dong-e88__cta-buttons,
  .page-cong-dong-e88__button-group,
  .page-cong-dong-e88__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;
    flex-direction: column; /* Ensure buttons stack vertically */
  }
}