.page-about {
  font-family: 'Arial', sans-serif;
  color: #333333;
  line-height: 1.6;
  background-color: #f9f9f9;
}

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

.page-about__section {
  padding: 60px 0;
  text-align: center;
}

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

.page-about__dark-section {
  background-color: #26A9E0;
  color: #ffffff;
}

.page-about__dark-section .page-about__section-title,
.page-about__dark-section .page-about__text-block,
.page-about__dark-section .page-about__card-title a,
.page-about__dark-section .page-about__support-title,
.page-about__dark-section .page-about__support-item p {
  color: #ffffff;
}

.page-about__section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 30px;
  color: #26A9E0;
}

.page-about__text-block {
  font-size: 17px;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, relies on body padding-top from shared.css */
  padding-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
}

.page-about__hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about__hero-content {
  position: relative;
  padding: 40px 20px;
  text-align: center;
  max-width: 900px;
  margin-top: -100px; /* Overlap slightly for visual effect */
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  z-index: 1;
}

.page-about__main-title {
  font-size: 48px;
  font-weight: 800;
  color: #26A9E0;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 18px;
  color: #555555;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__faq-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
}

.page-about__btn-primary {
  background-color: #26A9E0;
  color: #ffffff;
  border: 2px solid #26A9E0;
}

.page-about__btn-primary:hover {
  background-color: #1e87c0;
  border-color: #1e87c0;
  transform: translateY(-2px);
}

.page-about__btn-secondary {
  background-color: #ffffff;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-about__btn-secondary:hover {
  background-color: #f0f8ff;
  color: #1e87c0;
  border-color: #1e87c0;
  transform: translateY(-2px);
}

.page-about__btn-primary--small,
.page-about__btn-secondary--small {
  padding: 10px 20px;
  font-size: 16px;
}

/* Products and Services Section */
.page-about__products-services {
  padding-bottom: 80px;
}

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

.page-about__service-card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-about__service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-about__service-card .page-about__card-title {
  font-size: 22px;
  font-weight: 700;
  margin: 20px 20px 10px;
}

.page-about__service-card .page-about__card-title a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about__service-card .page-about__card-title a:hover {
  color: #f0f8ff;
}

.page-about__service-card p {
  font-size: 16px;
  color: #f0f0f0;
  padding: 0 20px 20px;
}

.page-about__cta-buttons--center {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Security Commitment Section */
.page-about__security-commitment {
  padding-bottom: 80px;
}

.page-about__security-content {
  display: flex;
  align-items: center;
  gap: 50px;
  text-align: left;
}

.page-about__security-text {
  flex: 1;
}

.page-about__security-image {
  flex: 1;
  min-width: 200px;
}

.page-about__security-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  display: block;
}

/* Customer Support Section */
.page-about__customer-support {
  padding-bottom: 80px;
}

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

.page-about__support-item {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.page-about__support-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 15px;
  color: #ffffff;
}

.page-about__support-item p {
  font-size: 16px;
  color: #f0f0f0;
  margin-bottom: 25px;
}

/* Future Vision Section */
.page-about__future-vision {
  padding-bottom: 80px;
}

.page-about__vision-content {
  display: flex;
  align-items: center;
  gap: 50px;
  text-align: left;
}

.page-about__vision-image {
  flex: 1;
  min-width: 200px;
}

.page-about__vision-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  display: block;
}

.page-about__vision-text {
  flex: 1;
}

/* FAQ Section */
.page-about__faq-section {
  padding-bottom: 80px;
}

.page-about__faq-list {
  margin-top: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

details.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
}

details.page-about__faq-item summary.page-about__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-about__faq-item summary.page-about__faq-question::-webkit-details-marker {
  display: none;
}

details.page-about__faq-item summary.page-about__faq-question:hover {
  background: #f5f5f5;
}

.page-about__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #333333;
}

.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-about__faq-item .page-about__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
  text-align: left;
}

.page-about__faq-answer p {
  font-size: 16px;
  color: #555555;
  margin-bottom: 15px;
}

.page-about__faq-btn {
  background-color: #EA7C07;
  color: #ffffff;
  border: 2px solid #EA7C07;
  padding: 10px 20px;
  font-size: 16px;
  border-radius: 5px;
}

.page-about__faq-btn:hover {
  background-color: #d16b06;
  border-color: #d16b06;
  transform: translateY(-1px);
}

/* Global image responsiveness for all content images */
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  .page-about__container {
    padding: 15px;
  }

  .page-about__section {
    padding: 40px 0;
  }

  .page-about__section-title {
    font-size: 28px;
    margin-bottom: 20px;
  }

  .page-about__text-block {
    font-size: 15px;
    text-align: left;
  }

  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px;
    padding-bottom: 40px;
  }

  .page-about__hero-image img {
    object-fit: contain !important; /* Prevents cropping on mobile */
    aspect-ratio: unset !important; /* Allows natural aspect ratio */
    height: auto !important;
  }

  .page-about__hero-content {
    padding: 25px 15px;
    margin-top: -50px;
  }

  .page-about__main-title {
    font-size: clamp(28px, 7vw, 36px);
    margin-bottom: 15px;
  }

  .page-about__hero-description {
    font-size: 16px;
    margin-bottom: 20px;
  }

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

  /* 按钮与按钮容器 */
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"],
  .page-about__faq-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;
    font-size: 16px;
  }

  .page-about__hero-cta-buttons,
  .page-about__cta-buttons--center,
  .page-about__button-group,
  .page-about__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: 15px;
    flex-direction: column;
  }

  /* Sản phẩm và Dịch vụ (Products and Services) */
  .page-about__services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__service-card img {
    
  }

  .page-about__service-card .page-about__card-title {
    font-size: 20px;
    margin: 15px 15px 8px;
  }

  .page-about__service-card p {
    font-size: 15px;
    padding: 0 15px 15px;
  }

  /* Cam kết An toàn (Security Commitment) */
  .page-about__security-content {
    flex-direction: column;
    gap: 30px;
  }

  .page-about__security-text,
  .page-about__security-image {
    width: 100%;
  }

  /* Hỗ trợ Khách hàng (Customer Support) */
  .page-about__support-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__support-item {
    padding: 25px;
  }

  .page-about__support-title {
    font-size: 22px;
  }

  /* Tầm nhìn Tương lai (Future Vision) */
  .page-about__vision-content {
    flex-direction: column-reverse;
    gap: 30px;
  }

  .page-about__vision-text,
  .page-about__vision-image {
    width: 100%;
  }

  /* Câu hỏi Thường gặp (FAQ) */
  .page-about__faq-qtext {
    font-size: 16px;
  }

  details.page-about__faq-item summary.page-about__faq-question {
    padding: 15px;
  }

  details.page-about__faq-item .page-about__faq-answer {
    padding: 0 15px 15px;
  }

  .page-about__faq-answer p {
    font-size: 15px;
  }

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

  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-image,
  .page-about__hero-content,
  .page-about__security-image,
  .page-about__vision-image,
  .page-about__services-grid,
  .page-about__support-grid,
  .page-about__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}