:root {
  --color-primary: #C61F1F;
  --color-secondary: #E53030;
  --color-button-gradient: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%);
  --color-card-bg: #2A1212;
  --color-background-main: #140C0C;
  --color-text-main: #FFF1E8;
  --color-border: #6A1E1E;
  --color-gold: #F3C54D;
  --color-deep-red: #7E0D0D;
}

.page-choi-co-trach-nhiem {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text-main); /* Light text for dark body background */
  background-color: var(--color-background-main); /* Explicitly set dark background */
}

.page-choi-co-trach-nhiem__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.page-choi-co-trach-nhiem__container--center {
  text-align: center;
}

/* Hero Section */
.page-choi-co-trach-nhiem__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, relies on body padding-top from shared */
  padding-bottom: 50px;
  background-color: var(--color-background-main);
  overflow: hidden;
}

.page-choi-co-trach-nhiem__hero-image-wrapper {
  position: relative;
  width: 100%;
  height: 600px; /* Fixed height for desktop hero image */
  overflow: hidden;
}

.page-choi-co-trach-nhiem__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Cover for desktop to fill space */
  display: block;
}

.page-choi-co-trach-nhiem__hero-content {
  position: relative;
  text-align: center;
  padding: 40px 20px;
  max-width: 900px;
  margin: -200px auto 0; /* Overlap slightly on desktop */
  background: rgba(0, 0, 0, 0.6); /* Semi-transparent overlay for text readability */
  border-radius: 10px;
  z-index: 1;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-choi-co-trach-nhiem__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--color-gold);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: 700;
}

.page-choi-co-trach-nhiem__description {
  font-size: 1.15rem;
  color: var(--color-text-main);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-choi-co-trach-nhiem__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

.page-choi-co-trach-nhiem__btn-primary,
.page-choi-co-trach-nhiem__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  box-sizing: border-box;
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Allow text wrapping */
  max-width: 100%; /* Ensure buttons don't overflow */
}

.page-choi-co-trach-nhiem__btn-primary {
  background: var(--color-button-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 10px rgba(255, 176, 74, 0.4);
}

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

.page-choi-co-trach-nhiem__btn-secondary {
  background: transparent;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
  box-shadow: 0 4px 10px rgba(243, 197, 77, 0.2);
}

.page-choi-co-trach-nhiem__btn-secondary:hover {
  background: rgba(243, 197, 77, 0.1);
  transform: translateY(-2px);
}

/* General Section Styling */
.page-choi-co-trach-nhiem__section {
  padding: 60px 0;
  background-color: var(--color-background-main);
}

.page-choi-co-trach-nhiem__dark-section {
  background-color: var(--color-deep-red);
  color: #ffffff;
}

.page-choi-co-trach-nhiem__section-title {
  font-size: 2.2rem;
  color: var(--color-gold);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 600;
  line-height: 1.3;
}

.page-choi-co-trach-nhiem__section-title--white {
  color: #ffffff;
}

.page-choi-co-trach-nhiem__text-block {
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: 20px;
  text-align: justify;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-choi-co-trach-nhiem__text-block--white {
  color: #ffffff;
}

.page-choi-co-trach-nhiem__list {
  list-style: disc inside;
  margin: 20px auto 30px auto;
  max-width: 900px;
  padding-left: 20px;
  color: var(--color-text-main);
}

.page-choi-co-trach-nhiem__list-item {
  margin-bottom: 10px;
  font-size: 1rem;
}

.page-choi-co-trach-nhiem__list--columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  list-style: none;
  padding: 0;
}

.page-choi-co-trach-nhiem__list--columns .page-choi-co-trach-nhiem__list-item {
  background-color: var(--color-card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  text-align: left;
}

.page-choi-co-trach-nhiem__image-wrapper {
  margin: 40px auto;
  max-width: 900px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-choi-co-trach-nhiem__image-wrapper--center {
  text-align: center;
}

.page-choi-co-trach-nhiem__content-image {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Feature Grid */
.page-choi-co-trach-nhiem__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-choi-co-trach-nhiem__feature-card {
  background-color: var(--color-card-bg);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  height: 100%; /* Ensure cards have equal height */
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.page-choi-co-trach-nhiem__feature-card:hover {
  transform: translateY(-5px);
}

.page-choi-co-trach-nhiem__feature-icon {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-choi-co-trach-nhiem__feature-title {
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-choi-co-trach-nhiem__feature-description {
  font-size: 0.95rem;
  color: var(--color-text-main);
  text-align: justify;
  flex-grow: 1; /* Allow description to take available space */
}

/* Support List */
.page-choi-co-trach-nhiem__support-list {
  list-style: none;
  padding: 0;
  margin: 40px auto;
  max-width: 900px;
}

.page-choi-co-trach-nhiem__support-item {
  background-color: var(--color-card-bg);
  border-left: 5px solid var(--color-gold);
  padding: 25px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.page-choi-co-trach-nhiem__support-title {
  font-size: 1.3rem;
  color: var(--color-gold);
  margin-bottom: 10px;
}

.page-choi-co-trach-nhiem__support-description {
  font-size: 0.95rem;
  color: var(--color-text-main);
}

/* FAQ Section */
details.page-choi-co-trach-nhiem__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-card-bg);
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question::-webkit-details-marker {
  display: none;
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question:hover {
  background: rgba(255, 255, 255, 0.05);
}

.page-choi-co-trach-nhiem__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--color-gold);
}

.page-choi-co-trach-nhiem__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--color-gold);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-choi-co-trach-nhiem__faq-item .page-choi-co-trach-nhiem__faq-answer {
  padding: 0 20px 20px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 0 0 5px 5px;
  color: var(--color-text-main);
}

.page-choi-co-trach-nhiem__faq-answer p {
  margin: 0;
  font-size: 0.95rem;
}

/* Footer */
.page-choi-co-trach-nhiem__footer {
  background-color: var(--color-deep-red);
  padding: 30px 0;
  text-align: center;
}

.page-choi-co-trach-nhiem__copyright {
  font-size: 0.9rem;
  color: #ffffff;
  margin: 0;
}

.page-choi-co-trach-nhiem a {
  color: var(--color-gold);
  text-decoration: none;
}

.page-choi-co-trach-nhiem a:hover {
  text-decoration: underline;
}

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

/* Responsive adjustments */
@media (max-width: 1024px) {
  .page-choi-co-trach-nhiem__hero-image-wrapper {
    height: 500px;
  }

  .page-choi-co-trach-nhiem__hero-content {
    margin-top: -150px;
    padding: 30px 15px;
  }

  .page-choi-co-trach-nhiem__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-choi-co-trach-nhiem__description {
    font-size: 1rem;
  }

  .page-choi-co-trach-nhiem__section-title {
    font-size: 2rem;
  }

  .page-choi-co-trach-nhiem__feature-icon {
    height: 180px;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-choi-co-trach-nhiem__hero-section {
    padding-bottom: 30px;
  }

  .page-choi-co-trach-nhiem__hero-image-wrapper {
    height: auto !important;
    aspect-ratio: 16/9;
  }

  .page-choi-co-trach-nhiem__hero-image {
    object-fit: contain !important; /* Prevent cropping on mobile */
    width: 100% !important;
    height: auto !important;
  }

  .page-choi-co-trach-nhiem__hero-content {
    margin-top: 0; /* Remove overlap on mobile */
    padding: 20px 15px;
    border-radius: 0;
    background: rgba(0, 0, 0, 0.8); /* Slightly darker for better contrast on mobile */
  }

  .page-choi-co-trach-nhiem__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-choi-co-trach-nhiem__description {
    font-size: 0.95rem;
    margin-bottom: 20px;
  }

  /* 按钮与按钮容器 */
  .page-choi-co-trach-nhiem__cta-buttons {
    flex-direction: column; /* Stack buttons vertically on mobile */
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  .page-choi-co-trach-nhiem__btn-primary,
  .page-choi-co-trach-nhiem__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 0.95rem;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-choi-co-trach-nhiem__section {
    padding: 40px 0;
  }

  .page-choi-co-trach-nhiem__section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-choi-co-trach-nhiem__text-block {
    font-size: 0.9rem;
    padding: 0 15px;
    text-align: left; /* Align text left on mobile for readability */
  }

  .page-choi-co-trach-nhiem__list {
    padding-left: 35px;
    margin: 15px auto 25px auto;
  }

  .page-choi-co-trach-nhiem__list-item {
    font-size: 0.9rem;
  }

  .page-choi-co-trach-nhiem__list--columns {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 0 15px;
  }

  /* Feature Grid */
  .page-choi-co-trach-nhiem__feature-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
    padding: 0 15px;
  }

  .page-choi-co-trach-nhiem__feature-card {
    padding: 20px;
  }

  .page-choi-co-trach-nhiem__feature-icon {
    height: 150px;
  }

  .page-choi-co-trach-nhiem__feature-title {
    font-size: 1.2rem;
  }

  .page-choi-co-trach-nhiem__feature-description {
    font-size: 0.85rem;
  }

  /* Support List */
  .page-choi-co-trach-nhiem__support-list {
    margin: 30px auto;
    padding: 0 15px;
  }

  .page-choi-co-trach-nhiem__support-item {
    padding: 20px;
    margin-bottom: 15px;
  }

  .page-choi-co-trach-nhiem__support-title {
    font-size: 1.1rem;
  }

  .page-choi-co-trach-nhiem__support-description {
    font-size: 0.85rem;
  }

  /* 通用图片与容器 */
  .page-choi-co-trach-nhiem img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-choi-co-trach-nhiem__container,
  .page-choi-co-trach-nhiem__image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-choi-co-trach-nhiem__image-wrapper {
    margin: 20px auto;
  }

  /* FAQ Section */
  details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question {
    padding: 15px;
  }

  .page-choi-co-trach-nhiem__faq-qtext {
    font-size: 1rem;
  }

  .page-choi-co-trach-nhiem__faq-toggle {
    font-size: 20px;
    width: 24px;
  }

  details.page-choi-co-trach-nhiem__faq-item .page-choi-co-trach-nhiem__faq-answer {
    padding: 0 15px 15px;
  }

  .page-choi-co-trach-nhiem__faq-answer p {
    font-size: 0.9rem;
  }

  .page-choi-co-trach-nhiem__footer {
    padding: 20px 15px;
  }

  .page-choi-co-trach-nhiem__copyright {
    font-size: 0.8rem;
  }
}