.page-about {
  background-color: #08160F; /* Nền tối của body */
  color: #F2FFF6; /* Màu chữ chính trên nền tối */
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #F2FFF6;
  padding-top: 10px; /* Nhỏ gọn để tránh double padding với body */
  padding-bottom: 60px;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.page-about__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.5); /* Nền tối mờ để chữ nổi bật */
  border-radius: 10px;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: bold;
  margin-bottom: 20px;
  color: #F2C14E; /* Màu vàng Gold cho tiêu đề chính */
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #A7D9B8; /* Màu chữ phụ trên nền tối */
}

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

.page-about__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  transition: all 0.3s ease;
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  border: none;
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-about__btn-secondary {
  background: #11271B; /* Card BG */
  color: #2AD16F;
  border: 2px solid #2AD16F;
}

.page-about__btn-secondary:hover {
  background: #2AD16F;
  color: #ffffff;
  transform: translateY(-2px);
}

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

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

.page-about__section-title {
  font-size: 2.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: #F2C14E; /* Gold */
}

.page-about__sub-title {
  font-size: 1.8rem;
  font-weight: bold;
  margin-top: 30px;
  margin-bottom: 20px;
  color: #2AD16F; /* Màu xanh lá cho tiêu đề phụ */
}

.page-about__paragraph {
  font-size: 1rem;
  margin-bottom: 15px;
  color: #F2FFF6;
}

.page-about__paragraph a {
  color: #57E38D; /* Glow */
  text-decoration: none;
}

.page-about__paragraph a:hover {
  text-decoration: underline;
}

.page-about__list {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 20px;
  color: #F2FFF6;
}

.page-about__list-item {
  margin-bottom: 10px;
  font-size: 1rem;
}

.page-about__dark-bg {
  background-color: #11271B; /* Card BG */
  color: #F2FFF6;
}

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

.page-about__value-card, .page-about__product-card, .page-about__tech-card {
  background-color: #0A4B2C; /* Deep Green */
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  border: 1px solid #2E7A4E; /* Border */
}

.page-about__value-card:hover, .page-about__product-card:hover, .page-about__tech-card:hover {
  transform: translateY(-5px);
}

.page-about__value-icon, .page-about__product-image, .page-about__tech-icon {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 20px;
  display: block;
}

.page-about__value-title, .page-about__product-title, .page-about__tech-title {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: #F2C14E; /* Gold */
}

.page-about__product-title a {
  color: #F2C14E;
  text-decoration: none;
}

.page-about__product-title a:hover {
  text-decoration: underline;
}

.page-about__value-description, .page-about__product-description, .page-about__tech-description {
  font-size: 0.95rem;
  color: #A7D9B8;
}

.page-about__faq-section {
  background-color: #0A4B2C; /* Deep Green */
  padding: 60px 0;
}

.page-about__faq-list {
  margin-top: 30px;
}

.page-about__faq-item {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: bold;
  color: #F2FFF6;
  background-color: #11271B;
  user-select: none;
  list-style: none; /* For details/summary */
}

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

.page-about__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  transition: transform 0.3s ease;
  color: #57E38D; /* Glow */
}

.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg);
}

.page-about__faq-answer {
  padding: 0 20px 20px 20px;
  font-size: 1rem;
  color: #A7D9B8;
  border-top: 1px solid #1E3A2A; /* Divider */
}

.page-about__cta-final-section .page-about__container {
  background-color: #11271B; /* Card BG */
  padding: 40px;
  border-radius: 15px;
  text-align: center;
  border: 1px solid #2E7A4E;
}

.page-about__cta-final-section .page-about__section-title {
  color: #F2C14E;
  margin-bottom: 20px;
}

.page-about__cta-final-section .page-about__paragraph {
  margin-bottom: 30px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-about__main-title {
    font-size: clamp(2rem, 6vw, 3rem);
  }
  .page-about__section-title {
    font-size: 2rem;
  }
  .page-about__sub-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-bottom: 40px;
  }
  .page-about__hero-content {
    padding: 15px;
  }
  .page-about__main-title {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
  }
  .page-about__hero-description {
    font-size: 1rem;
  }
  .page-about__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__cta-button {
    width: 100%;
    padding: 12px 20px;
    font-size: 0.95rem;
  }
  .page-about__section {
    padding: 40px 0;
  }
  .page-about__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  .page-about__section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }
  .page-about__sub-title {
    font-size: 1.3rem;
  }
  .page-about__paragraph, .page-about__list-item, .page-about__value-description, .page-about__product-description, .page-about__tech-description, .page-about__faq-answer {
    font-size: 0.95rem;
  }
  .page-about__value-card, .page-about__product-card, .page-about__tech-card {
    padding: 20px;
  }
  .page-about__value-title, .page-about__product-title, .page-about__tech-title {
    font-size: 1.2rem;
  }
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__hero-image-wrapper, .page-about__values-grid, .page-about__products-grid, .page-about__technology-grid, .page-about__faq-list, .page-about__cta-final-section .page-about__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  .page-about__faq-question {
    font-size: 1rem;
  }
  .page-about__faq-item[open] .page-about__faq-toggle {
    transform: rotate(45deg) !important;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }
  .page-about__cta-buttons a {
    width: calc(100% - 30px) !important; /* Account for padding */
    max-width: 100% !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}