.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #ffffff; /* Body background is dark green, so text should be white */
  background-color: var(--accent-color); /* Matches shared.css body background */
}

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

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Small top padding, assuming body handles --header-offset */
  overflow: hidden;
  color: #FFFFFF;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 700px;
  overflow: hidden;
}

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

.page-about__hero-content-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.4); /* Semi-transparent overlay for text readability */
  z-index: 1;
}

.page-about__hero-container {
  z-index: 2;
  position: relative;
  padding: 40px 20px;
  max-width: 900px;
}

.page-about__hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #FFFF00; /* Register/Login Font color */
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 30px;
  color: #FFFFFF;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

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

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

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

.page-about__dark-section {
  background-color: #017439;
  color: #FFFFFF;
}

.page-about__section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 40px;
  color: #017439; /* Default for light background */
}

.page-about__section-title--white {
  color: #FFFFFF;
}

.page-about__content-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.page-about__text-block {
  text-align: left;
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

.page-about__text-block p {
  margin-bottom: 15px;
}

.page-about__content-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-about__values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
  max-width: 1000px;
  width: 100%;
}

.page-about__value-card {
  background-color: #f9f9f9;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-about__value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.page-about__value-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #017439;
  margin-bottom: 15px;
}

.page-about__value-description {
  font-size: 1rem;
  color: #555555;
}

.page-about__commitment-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
  max-width: 1000px;
  width: 100%;
}

.page-about__commitment-item {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.page-about__commitment-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 15px;
}

.page-about__commitment-item p {
  font-size: 1rem;
  color: #f0f0f0;
}

.page-about__cta-buttons--center {
  margin-top: 40px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background-color: #C30808; /* Register/Login button color */
  color: #FFFF00; /* Register/Login font color */
  border: 2px solid #C30808;
}

.page-about__btn-primary:hover {
  background-color: #a30606;
  border-color: #a30606;
  color: #ffffff;
}

.page-about__btn-secondary {
  background-color: transparent;
  color: #017439;
  border: 2px solid #017439;
}

.page-about__btn-secondary:hover {
  background-color: #017439;
  color: #FFFFFF;
}

.page-about__dark-section .page-about__btn-secondary {
  color: #FFFFFF;
  border-color: #FFFFFF;
}

.page-about__dark-section .page-about__btn-secondary:hover {
  background-color: #FFFFFF;
  color: #017439;
}

.page-about__faq-section {
  padding-bottom: 80px;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0;
  width: 100%;
}

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: 16px;
  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;
  color: #555555;
}

.page-about__cta-bottom {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.page-about__cta-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: brightness(0.6);
}

.page-about__cta-content {
  position: relative;
  z-index: 1;
  color: #FFFFFF;
}

.page-about__cta-description {
  font-size: 1.2rem;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }
  .page-about__hero-description {
    font-size: clamp(0.9rem, 1.8vw, 1.15rem);
  }
  .page-about__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  }
  .page-about__value-title, .page-about__commitment-title {
    font-size: 1.3rem;
  }
  .page-about__btn-primary, .page-about__btn-secondary {
    font-size: 1rem;
    padding: 12px 25px;
  }
}

@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__container {
    padding: 15px;
  }

  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px !important;
  }
  .page-about__hero-image-wrapper {
    max-height: 400px;
  }
  .page-about__hero-image {
    object-fit: contain !important; /* 强制 contain */
    aspect-ratio: unset !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-about__hero-content-wrapper {
    background-color: rgba(0, 0, 0, 0.6); /* Tăng độ đậm để dễ đọc */
  }
  .page-about__hero-container {
    padding: 20px 15px;
  }
  .page-about__hero-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }
  .page-about__hero-description {
    font-size: clamp(0.9rem, 3.5vw, 1.1rem);
    margin-bottom: 20px;
  }
  .page-about__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-about__section {
    padding: 40px 0;
  }
  .page-about__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 30px;
    padding: 0 10px;
  }
  .page-about__text-block {
    font-size: 1rem;
    padding: 0 10px;
  }
  .page-about__content-area {
    gap: 30px;
  }
  .page-about__content-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
    padding: 0 10px;
  }

  .page-about__values-grid,
  .page-about__commitment-list {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }

  .page-about__value-card, .page-about__commitment-item {
    padding: 25px;
  }

  .page-about__value-title, .page-about__commitment-title {
    font-size: 1.3rem;
  }

  /* 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 {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 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"] {
    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;
  }
  .page-about__cta-buttons,
  .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: 10px;
  }
  .page-about__cta-buttons {
    flex-direction: column;
  }

  /* FAQ */
  details.page-about__faq-item summary.page-about__faq-question { padding: 15px; }
  .page-about__faq-qtext { font-size: 15px; }
  details.page-about__faq-item .page-about__faq-answer { padding: 0 15px 15px; }

  .page-about__cta-bottom {
    padding: 60px 0;
  }
  .page-about__cta-description {
    font-size: 1rem;
    margin-bottom: 30px;
    padding: 0 10px;
  }
}