.page-trach-nhiem-co-bac {
  color: #333333; /* Default text color for light body background */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.page-trach-nhiem-co-bac__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 40px 16px;
  box-sizing: border-box;
}

.page-trach-nhiem-co-bac__hero-section {
  padding-top: 10px; /* Small top padding, assuming body has header offset */
  padding-bottom: 40px;
  background-color: #F5F7FA; /* Light background for hero section */
}

.page-trach-nhiem-co-bac__hero-container {
  max-width: 1170px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  padding: 40px 16px;
  box-sizing: border-box;
}

.page-trach-nhiem-co-bac__hero-content {
  flex: 1 1 45%;
  min-width: 300px;
  color: #333333;
}

.page-trach-nhiem-co-bac__hero-title {
  font-size: clamp(2em, 4vw, 3em);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #E53935;
}

.page-trach-nhiem-co-bac__hero-description {
  font-size: 1.1em;
  color: #333333;
}

.page-trach-nhiem-co-bac__hero-image {
  flex: 1 1 45%;
  text-align: center;
}

.page-trach-nhiem-co-bac__hero-side-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-trach-nhiem-co-bac__section-title {
  font-size: 2.2em;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: #E53935;
}

.page-trach-nhiem-co-bac__text-block {
  font-size: 1.05em;
  text-align: justify;
  margin-bottom: 20px;
}

.page-trach-nhiem-co-bac__principles-section {
  background-color: #ffffff;
  padding: 60px 0;
}

.page-trach-nhiem-co-bac__principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-trach-nhiem-co-bac__principle-item {
  background-color: #F5F7FA;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.page-trach-nhiem-co-bac__principle-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 20px;
  border-radius: 8px;
}

.page-trach-nhiem-co-bac__principle-title {
  font-size: 1.5em;
  font-weight: 600;
  margin-bottom: 15px;
  color: #FF5A4F;
}

.page-trach-nhiem-co-bac__principle-description {
  font-size: 1em;
  color: #333333;
}

.page-trach-nhiem-co-bac__tools-section {
  background-color: #F5F7FA;
  padding: 60px 0;
}

.page-trach-nhiem-co-bac__tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-trach-nhiem-co-bac__tool-item {
  background-color: #ffffff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-trach-nhiem-co-bac__tool-title {
  font-size: 1.3em;
  font-weight: 600;
  margin-bottom: 10px;
  color: #E53935;
}

.page-trach-nhiem-co-bac__tool-description {
  font-size: 0.95em;
  color: #333333;
}

.page-trach-nhiem-co-bac__tools-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-trach-nhiem-co-bac__faq-section {
  background-color: #ffffff;
  padding: 60px 0;
}

.page-trach-nhiem-co-bac__faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.page-trach-nhiem-co-bac__faq-item {
  margin-bottom: 15px;
  border: 1px solid #E0E0E0;
  border-radius: 8px;
  overflow: hidden;
}

.page-trach-nhiem-co-bac__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background-color: #F5F7FA;
  cursor: pointer;
  font-weight: 600;
  color: #333333;
  font-size: 1.1em;
  list-style: none; /* For details/summary */
}

.page-trach-nhiem-co-bac__faq-question::-webkit-details-marker {
  display: none;
}

.page-trach-nhiem-co-bac__faq-question:hover {
  background-color: #eaecef;
}

.page-trach-nhiem-co-bac__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
  color: #E53935;
}

.page-trach-nhiem-co-bac__faq-item[open] .page-trach-nhiem-co-bac__faq-toggle {
  transform: rotate(45deg);
}

.page-trach-nhiem-co-bac__faq-answer {
  padding: 15px 25px;
  background-color: #ffffff;
  color: #333333;
  font-size: 1em;
}

.page-trach-nhiem-co-bac__help-section {
  background-color: #F5F7FA;
  padding: 60px 0;
  text-align: center;
}

.page-trach-nhiem-co-bac__cta-section {
  background-color: #ffffff;
  padding: 60px 0;
  text-align: center;
}

.page-trach-nhiem-co-bac__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: all 0.3s ease;
  margin: 10px;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-trach-nhiem-co-bac__btn-primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 10px rgba(229, 57, 53, 0.3);
}

.page-trach-nhiem-co-bac__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-trach-nhiem-co-bac__btn-secondary {
  background-color: #ffffff;
  color: #E53935;
  border: 2px solid #E53935;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.page-trach-nhiem-co-bac__btn-secondary:hover {
  background-color: #E53935;
  color: #ffffff;
}

.page-trach-nhiem-co-bac__button-group {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* General image responsiveness */
.page-trach-nhiem-co-bac img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Mobile Responsive Styles --- */
@media (max-width: 768px) {
  .page-trach-nhiem-co-bac__container {
    padding: 20px 15px;
  }

  .page-trach-nhiem-co-bac__hero-section {
    padding-top: 10px !important;
    padding-bottom: 20px;
  }

  .page-trach-nhiem-co-bac__hero-container {
    flex-direction: column;
    gap: 20px;
    padding: 20px 15px;
  }

  .page-trach-nhiem-co-bac__hero-content {
    order: 2;
  }

  .page-trach-nhiem-co-bac__hero-image {
    order: 1;
  }

  .page-trach-nhiem-co-bac__hero-title {
    font-size: 2em;
    margin-bottom: 15px;
  }

  .page-trach-nhiem-co-bac__hero-description {
    font-size: 1em;
  }

  .page-trach-nhiem-co-bac__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }

  .page-trach-nhiem-co-bac__principles-grid,
  .page-trach-nhiem-co-bac__tools-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-trach-nhiem-co-bac__principle-item,
  .page-trach-nhiem-co-bac__tool-item {
    padding: 20px;
  }

  .page-trach-nhiem-co-bac__principle-title {
    font-size: 1.3em;
  }

  .page-trach-nhiem-co-bac__tool-title {
    font-size: 1.2em;
  }

  .page-trach-nhiem-co-bac__faq-question {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-trach-nhiem-co-bac__faq-answer {
    padding: 10px 20px;
    font-size: 0.95em;
  }

  /* Universal image responsiveness for content area */
  .page-trach-nhiem-co-bac img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-trach-nhiem-co-bac__section,
  .page-trach-nhiem-co-bac__card,
  .page-trach-nhiem-co-bac__container,
  .page-trach-nhiem-co-bac__principles-grid,
  .page-trach-nhiem-co-bac__tools-grid,
  .page-trach-nhiem-co-bac__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Button responsiveness */
  .page-trach-nhiem-co-bac__cta-button,
  .page-trach-nhiem-co-bac__btn-primary,
  .page-trach-nhiem-co-bac__btn-secondary,
  .page-trach-nhiem-co-bac a[class*="button"],
  .page-trach-nhiem-co-bac a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    margin: 10px 0 !important; /* Adjust margin for stacking */
  }
  
  .page-trach-nhiem-co-bac__button-group {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-direction: column !important; /* Stack buttons vertically */
    gap: 10px;
  }

  /* Placeholder for Module 1 three-column round images (not present on this page) */
  .page-trach-nhiem-co-bac__icon-box-media {
    width: 200px;
    height: 200px;
    margin: 0 auto 16px;
  }
  /* Placeholder for Seven Tab Game Area (not present on this page) */
  .page-trach-nhiem-co-bac__game-tabs, .page-trach-nhiem-co-bac__tab-nav, .page-trach-nhiem-co-bac__game-panel {
    /* Mobile specific styles for game tabs if they were present */
    display: block;
  }
}