.page-about {
  background-color: #F4F7FB; /* Nền chung của trang */
  color: #1F2D3D; /* Màu chữ chính */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

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

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Nhỏ hơn so với --header-offset */
  padding-bottom: 60px;
  overflow: hidden;
  box-sizing: border-box;
}

.page-about__hero-image-wrapper {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  margin-bottom: 30px; /* Khoảng cách giữa ảnh và nội dung */
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 8px;
}

.page-about__hero-content {
  max-width: 900px;
  text-align: center;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: #1F2D3D;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about__description {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #1F2D3D;
}

.page-about__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 15px rgba(47, 107, 255, 0.4);
}

.page-about__intro-section,
.page-about__values-section,
.page-about__products-section,
.page-about__security-section,
.page-about__faq-section {
  padding: 60px 0;
}

.page-about__section-title {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  color: #1F2D3D;
  text-align: center;
  margin-bottom: 40px;
}

.page-about__text-block {
  font-size: 1rem;
  margin-bottom: 20px;
  text-align: justify;
  color: #1F2D3D;
}

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

.page-about__card {
  background-color: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 30px;
  text-align: center;
  border: 1px solid #D6E2FF;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #1F2D3D;
}

.page-about__value-icon,
.page-about__security-icon {
  width: 200px; /* Đảm bảo kích thước tối thiểu */
  height: auto;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 8px;
}

.page-about__value-title,
.page-about__security-title,
.page-about__product-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #2F6BFF; /* Sử dụng màu thương hiệu cho tiêu đề */
  margin-bottom: 15px;
}

.page-about__value-description,
.page-about__security-description,
.page-about__product-description {
  font-size: 0.95rem;
  color: #1F2D3D;
}

.page-about__product-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  list-style: none;
  padding: 0;
  margin-top: 40px;
}

.page-about__product-item {
  text-align: center;
}

.page-about__btn-secondary {
  display: inline-block;
  padding: 10px 20px;
  background-color: #FFFFFF;
  color: #2F6BFF;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  border: 2px solid #2F6BFF;
  transition: all 0.3s ease;
  margin-top: 20px;
}

.page-about__btn-secondary:hover {
  background-color: #2F6BFF;
  color: #FFFFFF;
  box-shadow: 0 2px 10px rgba(47, 107, 255, 0.3);
}

.page-about__cta-section {
  padding: 80px 0;
  text-align: center;
}

.page-about__dark-section {
  background-color: #2F6BFF;
  color: #FFFFFF;
}

.page-about__dark-section .page-about__section-title,
.page-about__dark-section .page-about__text-block {
  color: #FFFFFF;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.page-about__faq-item {
  background-color: #FFFFFF;
  border: 1px solid #D6E2FF;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #1F2D3D;
}

.page-about__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  list-style: none;
  color: #1F2D3D;
}

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

.page-about__faq-qtext {
  flex-grow: 1;
  color: #1F2D3D;
}

.page-about__faq-toggle {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2F6BFF;
  margin-left: 15px;
}

.page-about__faq-answer {
  padding: 0 25px 20px;
  font-size: 1rem;
  color: #1F2D3D;
}

.page-about__faq-answer p {
  margin: 0;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .page-about__container {
    padding: 0 15px;
  }

  .page-about__hero-section {
    padding-bottom: 40px;
  }

  .page-about__main-title {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .page-about__description {
    font-size: 1rem;
  }

  .page-about__intro-section,
  .page-about__values-section,
  .page-about__products-section,
  .page-about__security-section,
  .page-about__faq-section {
    padding: 40px 0;
  }

  .page-about__section-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 30px;
  }

  .page-about__values-grid,
  .page-about__security-grid,
  .page-about__product-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Ensure all images are responsive */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  /* Ensure all image containers are responsive */
  .page-about__hero-image-wrapper,
  .page-about__values-grid,
  .page-about__value-card,
  .page-about__security-grid,
  .page-about__security-item,
  .page-about__product-list,
  .page-about__product-item,
  .page-about__card,
  .page-about__container,
  .page-about__intro-section,
  .page-about__values-section,
  .page-about__products-section,
  .page-about__security-section,
  .page-about__cta-section,
  .page-about__faq-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Ensure content does not overflow */
  }

  .page-about__faq-item summary {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-about__faq-answer {
    padding: 0 20px 15px;
  }
}

/* Color Contrast Fixes (if needed, based on background-color: #F4F7FB) */
.page-about p,
.page-about li,
.page-about__description,
.page-about__text-block,
.page-about__value-description,
.page-about__security-description,
.page-about__product-description,
.page-about__faq-qtext,
.page-about__faq-answer p {
  color: #1F2D3D; /* Đảm bảo màu chữ chính trên nền sáng */
}

.page-about__dark-section .page-about__section-title,
.page-about__dark-section .page-about__text-block {
  color: #FFFFFF; /* Màu chữ trắng trên nền xanh đậm */
}