.page-game-bai-tien-len-mien-nam {
  color: #F3F8FF; /* Text Main */
  background-color: var(--deep-navy); /* Body background from shared */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.page-game-bai-tien-len-mien-nam__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

.page-game-bai-tien-len-mien-nam__section-title {
  font-size: 2.5rem;
  color: #F2C14E; /* Gold */
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

.page-game-bai-tien-len-mien-nam__text-block {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 20px;
  color: #AFC4E8; /* Text Secondary */
}

.page-game-bai-tien-len-mien-nam__card {
  background-color: #10233F; /* Card BG */
  border: 1px solid #244D84; /* Border */
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  color: #F3F8FF; /* Text Main */
}

.page-game-bai-tien-len-mien-nam__dark-section {
  background-color: #08162B; /* Deep Navy */
  padding: 60px 0;
}

.page-game-bai-tien-len-mien-nam__dark-bg {
  background-color: #113B7A;
  color: #F3F8FF;
  padding: 40px;
  border-radius: 8px;
}

/* Hero Section */
.page-game-bai-tien-len-mien-nam__hero-section {
  padding-top: 10px; /* Small top padding */
  padding-bottom: 60px;
  background: linear-gradient(180deg, #113B7A 0%, #08162B 100%);
}

.page-game-bai-tien-len-mien-nam__hero-container {
  max-width: 1170px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  padding: 40px 16px;
}

.page-game-bai-tien-len-mien-nam__hero-content {
  flex: 1 1 50%;
  min-width: 300px;
}

.page-game-bai-tien-len-mien-nam__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: 900;
}

.page-game-bai-tien-len-mien-nam__hero-description {
  font-size: 1.2rem;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 30px;
}

.page-game-bai-tien-len-mien-nam__cta-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.page-game-bai-tien-len-mien-nam__btn-primary,
.page-game-bai-tien-len-mien-nam__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-game-bai-tien-len-mien-nam__btn-primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  border: 2px solid transparent;
}

.page-game-bai-tien-len-mien-nam__btn-primary:hover {
  background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
  box-shadow: 0 0 15px #4FA8FF; /* Glow */
}

.page-game-bai-tien-len-mien-nam__btn-secondary {
  background-color: transparent;
  color: #F2C14E; /* Gold */
  border: 2px solid #F2C14E; /* Gold */
}

.page-game-bai-tien-len-mien-nam__btn-secondary:hover {
  background-color: #F2C14E;
  color: #113B7A;
  box-shadow: 0 0 15px rgba(242, 193, 78, 0.5);
}

.page-game-bai-tien-len-mien-nam__hero-image {
  flex: 1 1 40%;
  text-align: center;
  min-width: 300px;
}

.page-game-bai-tien-len-mien-nam__hero-side-image {
  max-width: 600px;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

/* Introduction Section */
.page-game-bai-tien-len-mien-nam__introduction-section {
  padding: 60px 0;
}

/* Features Section */
.page-game-bai-tien-len-mien-nam__features-section {
  padding: 60px 0;
  background-color: #08162B;
}

.page-game-bai-tien-len-mien-nam__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-game-bai-tien-len-mien-nam__feature-item {
  text-align: center;
}

.page-game-bai-tien-len-mien-nam__icon-box-media {
  width: 240px;
  height: 240px;
  aspect-ratio: 1/1;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #F2C14E; /* Gold */
  box-shadow: 0 0 20px #4FA8FF; /* Glow */
}

.page-game-bai-tien-len-mien-nam__icon-box-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.page-game-bai-tien-len-mien-nam__feature-title {
  font-size: 1.8rem;
  color: #F3F8FF; /* Text Main */
  margin-top: 15px;
  margin-bottom: 10px;
}

/* Gameplay Guide Section */
.page-game-bai-tien-len-mien-nam__gameplay-guide-section {
  padding: 60px 0;
}

.page-game-bai-tien-len-mien-nam__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-game-bai-tien-len-mien-nam__guide-item {
  padding: 25px;
  text-align: center;
}

.page-game-bai-tien-len-mien-nam__guide-title {
  font-size: 1.5rem;
  color: #F2C14E; /* Gold */
  margin-bottom: 15px;
}

.page-game-bai-tien-len-mien-nam__cta-center {
  text-align: center;
  margin-top: 40px;
}

/* Tips Section */
.page-game-bai-tien-len-mien-nam__tips-section {
  padding: 60px 0;
  background-color: #08162B;
}

.page-game-bai-tien-len-mien-nam__tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-game-bai-tien-len-mien-nam__tip-card {
  padding: 0; /* Remove padding from card as image takes full width */
  overflow: hidden;
  text-align: left;
}

.page-game-bai-tien-len-mien-nam__tip-image {
  width: 100%;
  height: 250px; /* Fixed height for consistency */
  object-fit: cover;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-game-bai-tien-len-mien-nam__tip-card h3,
.page-game-bai-tien-len-mien-nam__tip-card p {
  padding: 0 25px;
}

.page-game-bai-tien-len-mien-nam__tip-title {
  font-size: 1.5rem;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 10px;
}

/* FAQ Section */
.page-game-bai-tien-len-mien-nam__faq-section {
  padding: 60px 0;
}

.page-game-bai-tien-len-mien-nam__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-game-bai-tien-len-mien-nam__faq-item {
  background-color: #10233F; /* Card BG */
  border: 1px solid #244D84; /* Border */
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-game-bai-tien-len-mien-nam__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2rem;
  color: #F3F8FF; /* Text Main */
  cursor: pointer;
  background-color: #113B7A;
  border-bottom: 1px solid #1B3357; /* Divider */
}

.page-game-bai-tien-len-mien-nam__faq-item[open] .page-game-bai-tien-len-mien-nam__faq-question {
  border-bottom: 1px solid #1B3357;
}

.page-game-bai-tien-len-mien-nam__faq-qtext {
  flex-grow: 1;
}

.page-game-bai-tien-len-mien-nam__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  color: #F2C14E; /* Gold */
}

.page-game-bai-tien-len-mien-nam__faq-answer {
  padding: 20px 25px;
  font-size: 1.1rem;
  color: #AFC4E8; /* Text Secondary */
  background-color: #10233F; /* Card BG */
}

.page-game-bai-tien-len-mien-nam__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-game-bai-tien-len-mien-nam__faq-item summary::marker {
  display: none;
}

/* Final CTA Section */
.page-game-bai-tien-len-mien-nam__cta-final-section {
  padding: 60px 0;
  text-align: center;
}

.page-game-bai-tien-len-mien-nam__cta-final-section .page-game-bai-tien-len-mien-nam__dark-bg {
  padding: 60px 40px;
}

.page-game-bai-tien-len-mien-nam__cta-final-section .page-game-bai-tien-len-mien-nam__section-title {
  color: #F3F8FF; /* Text Main */
}

.page-game-bai-tien-len-mien-nam__cta-final-section .page-game-bai-tien-len-mien-nam__text-block {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
}

/* Global image responsiveness for content area */
.page-game-bai-tien-len-mien-nam img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-game-bai-tien-len-mien-nam__hero-container {
    flex-direction: column;
    text-align: center;
  }

  .page-game-bai-tien-len-mien-nam__hero-content,
  .page-game-bai-tien-len-mien-nam__hero-image {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .page-game-bai-tien-len-mien-nam__cta-buttons {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .page-game-bai-tien-len-mien-nam {
    font-size: 15px;
  }

  .page-game-bai-tien-len-mien-nam__container {
    padding: 0 15px !important;
  }

  .page-game-bai-tien-len-mien-nam__section-title {
    font-size: 2rem;
    margin-bottom: 30px;
  }

  .page-game-bai-tien-len-mien-nam__text-block {
    font-size: 1rem;
  }

  /* HERO Section */
  .page-game-bai-tien-len-mien-nam__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-game-bai-tien-len-mien-nam__main-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .page-game-bai-tien-len-mien-nam__hero-description {
    font-size: 1rem;
  }

  .page-game-bai-tien-len-mien-nam__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-game-bai-tien-len-mien-nam__btn-primary,
  .page-game-bai-tien-len-mien-nam__btn-secondary,
  .page-game-bai-tien-len-mien-nam a[class*="button"],
  .page-game-bai-tien-len-mien-nam 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;
  }

  /* Feature Grid (Module 1) */
  .page-game-bai-tien-len-mien-nam__feature-grid {
    grid-template-columns: 1fr;
  }

  .page-game-bai-tien-len-mien-nam__icon-box-media {
    width: 180px;
    height: 180px;
  }

  /* Gameplay Guide */
  .page-game-bai-tien-len-mien-nam__guide-steps {
    grid-template-columns: 1fr;
  }

  .page-game-bai-tien-len-mien-nam__guide-title {
    font-size: 1.3rem;
  }

  /* Tips Section */
  .page-game-bai-tien-len-mien-nam__tips-grid {
    grid-template-columns: 1fr;
  }

  .page-game-bai-tien-len-mien-nam__tip-image {
    height: 200px;
  }

  .page-game-bai-tien-len-mien-nam__tip-title {
    font-size: 1.3rem;
  }

  /* FAQ Section */
  .page-game-bai-tien-len-mien-nam__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-game-bai-tien-len-mien-nam__faq-answer {
    font-size: 0.95rem;
    padding: 15px 20px;
  }

  /* All images */
  .page-game-bai-tien-len-mien-nam img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-game-bai-tien-len-mien-nam__section,
  .page-game-bai-tien-len-mien-nam__card,
  .page-game-bai-tien-len-mien-nam__container,
  .page-game-bai-tien-len-mien-nam__cta-buttons,
  .page-game-bai-tien-len-mien-nam__button-group,
  .page-game-bai-tien-len-mien-nam__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-game-bai-tien-len-mien-nam__cta-buttons {
    flex-wrap: wrap !important;
    gap: 10px;
  }
}