.page-about {
  color: #ffffff; /* Dark body background #121212, so light text */
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  padding-top: 120px; /* Space for fixed header on desktop */
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-about__section-title {
  font-size: 36px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color, #FFD700);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.page-about__section-description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 60px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #f0f0f0;
}

/* Hero Section */
.page-about__hero-section {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(135deg, var(--secondary-color, #000080) 0%, #1a1a1a 100%);
  color: #ffffff;
}

.page-about__main-title {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--primary-color, #FFD700);
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.page-about__hero-description {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: #e0e0e0;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-about__cta-button {
  display: inline-block;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.page-about__btn-primary {
  background: var(--primary-color, #FFD700);
  color: #000080; /* Dark blue text on gold for contrast */
}

.page-about__btn-primary:hover {
  background: #e6c200; /* Slightly darker gold */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--primary-color, #FFD700);
  border: 2px solid var(--primary-color, #FFD700);
}

.page-about__btn-secondary:hover {
  background: var(--primary-color, #FFD700);
  color: #000080;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Mission & Vision Section */
.page-about__mission-vision-section {
  padding: 80px 0;
  background: #1a1a1a;
  color: #ffffff;
}

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

.page-about__card {
  background: rgba(255, 255, 255, 0.08); /* Slightly transparent white for dark background */
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.page-about__card-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  object-fit: cover;
  width: 100%; /* Ensure image fills card width */
  min-height: 200px; /* Minimum height for images */
}

.page-about__card-title {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--primary-color, #FFD700);
}

.page-about__card p {
  font-size: 16px;
  color: #e0e0e0;
}

/* Why Choose Section */
.page-about__why-choose-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #121212 0%, var(--secondary-color, #000080) 100%);
  color: #ffffff;
}

.page-about__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-about__feature-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease;
}

.page-about__feature-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

.page-about__feature-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 15px;
  object-fit: contain;
  min-width: 80px; /* Ensure icon is not too small */
  min-height: 80px;
}

.page-about__feature-title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color, #FFD700);
}

.page-about__feature-item p {
  font-size: 15px;
  color: #c0c0c0;
}

/* Values Section */
.page-about__values-section {
  padding: 80px 0;
  background: #1a1a1a;
  color: #ffffff;
}

.page-about__values-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-about__value-item {
  background: rgba(255, 255, 255, 0.08);
  border-left: 5px solid var(--primary-color, #FFD700);
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-about__value-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--primary-color, #FFD700);
}

.page-about__value-item p {
  font-size: 16px;
  color: #e0e0e0;
}

/* FAQ Section */
.page-about__faq-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--secondary-color, #000080) 0%, #121212 100%);
  color: #ffffff;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

/* FAQ容器样式 */
.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* FAQ默认状态 - 答案隐藏 */
.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  color: #e0e0e0;
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng !important để đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px !important;
  opacity: 1;
  background: rgba(255, 255, 255, 0.05); /* Nền hơi trong suốt cho câu trả lời */
  border-radius: 0 0 8px 8px;
}

/* 问题样式 */
.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.page-about__faq-question:active {
  background: rgba(255, 255, 255, 0.2);
}

/* 问题标题样式 */
.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--primary-color, #FFD700);
}

/* 切换图标 */
.page-about__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color, #FFD700);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  color: #ffffff;
  transform: rotate(45deg); /* Thêm hiệu ứng xoay khi mở */
}

/* Commitment Section */
.page-about__commitment-section {
  padding: 80px 0;
  text-align: center;
  background: #1a1a1a;
  color: #ffffff;
}

.page-about__btn-large {
  padding: 18px 45px;
  font-size: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .page-about {
    padding-top: 100px !important; /* Space for fixed header on mobile */
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .page-about__section-description {
    font-size: 16px;
    margin-bottom: 40px;
  }

  .page-about__main-title {
    font-size: 36px;
  }

  .page-about__hero-description {
    font-size: 18px;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-about__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 25px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-about__grid-layout, .page-about__features-grid, .page-about__values-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__card {
    padding: 25px;
  }

  .page-about__card-image {
    min-height: 150px; /* Adjust min height for mobile */
  }

  .page-about__card-title {
    font-size: 20px;
  }

  .page-about__feature-item, .page-about__value-item {
    padding: 20px;
  }

  .page-about__feature-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    min-height: 60px;
  }

  .page-about__feature-title {
    font-size: 18px;
  }

  .page-about__value-title {
    font-size: 20px;
  }

  /* FAQ Mobile */
  .page-about__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-about__faq-question h3 {
    font-size: 16px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  
  .page-about__faq-toggle {
    margin-left: 10px;
    width: 28px;
    height: 28px;
    font-size: 24px;
  }
  
  .page-about__faq-answer {
    padding: 0 15px;
  }
  
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px !important;
  }

  /* Ensure all images are responsive on mobile */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-about__mission-vision-section,
  .page-about__why-choose-section,
  .page-about__values-section,
  .page-about__faq-section,
  .page-about__commitment-section {
    padding-left: 0 !important;
    padding-right: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-about__hero-section {
    padding: 60px 0 !important;
  }

  .page-about__hero-section .page-about__container {
    padding: 0 15px !important;
  }

  .page-about__btn-large {
    padding: 15px 30px !important;
    font-size: 18px !important;
  }
}

/* Color Contrast Fixes for specific elements if needed */
.page-about__dark-bg {
  color: #ffffff;
}

.page-about__light-bg {
  color: #333333;
}

.page-about__card p {
  color: #e0e0e0;
}

.page-about__feature-item p {
  color: #c0c0c0;
}

.page-about__value-item p {
  color: #e0e0e0;
}

/* For the shared.css body background of #121212 (dark), text in .page-about defaults to #ffffff */
/* Specific sections with lighter backgrounds (e.g., #f9f9f9) would need darker text if they existed */
/* Here, all custom sections use dark backgrounds (or transparent over dark body), so light text is appropriate */