.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main, #FFF5E1); /* Default text color for dark sections */
  background: var(--page-bg, #B71C1C); /* Background color from custom scheme */
}

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

.page-about__dark-section {
  background: var(--bg, #B71C1C);
  color: var(--text-main, #FFF5E1);
}

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

.page-about__section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--gold, #F4D34D);
  text-shadow: 0 0 8px rgba(255, 204, 102, 0.6);
}

.page-about__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Small top padding, assuming body has header offset */
  position: relative;
  overflow: hidden;
  min-height: 500px;
}

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

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

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 40px 20px;
  background: linear-gradient(180deg, rgba(193, 31, 23, 0.9) 0%, rgba(229, 57, 53, 0.9) 100%);
  border-radius: 15px;
  margin-top: -80px; /* Overlap slightly for visual effect */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transform: translateY(-20px); /* Lift slightly */
}

.page-about__main-title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 900;
  color: var(--gold, #F4D34D);
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(255, 204, 102, 0.8);
  line-height: 1.2;
}

.page-about__subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--text-main, #FFF5E1);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__link-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  color: var(--deep-red, #7A0E0E);
  border: 2px solid var(--border, #F2B544);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__btn-primary:hover {
  background: linear-gradient(180deg, #E6B800 0%, #FFD86A 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--gold, #F4D34D);
  border: 2px solid var(--gold, #F4D34D);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__btn-secondary:hover {
  background: var(--gold, #F4D34D);
  color: var(--deep-red, #7A0E0E);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-about__link-button {
  background: var(--main-color, #C91F17);
  color: var(--text-main, #FFF5E1);
  border: 2px solid var(--border, #F2B544);
  padding: 10px 25px;
  border-radius: 5px;
  font-size: 16px;
  margin-top: 20px;
  display: inline-block;
}

.page-about__link-button:hover {
  background: var(--aux-color, #E53935);
  transform: translateY(-2px);
}

.page-about__introduction-section,
.page-about__values-section,
.page-about__responsibility-section {
  background: var(--card-bg, #D32F2F);
  color: var(--text-main, #FFF5E1);
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  text-align: left;
}

.page-about__content-wrapper {
  display: flex;
  gap: 40px;
  align-items: center;
  text-align: left;
}

.page-about__content-wrapper--reversed {
  flex-direction: row-reverse;
}

.page-about__text-block p {
  margin-bottom: 15px;
  font-size: 17px;
  color: var(--text-main, #FFF5E1);
}

.page-about__image-wrapper {
  flex-shrink: 0;
}

.page-about__image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  min-width: 200px;
  min-height: 200px;
}

.page-about__values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__value-card {
  background: var(--card-bg, #D32F2F);
  border: 1px solid var(--border, #F2B544);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-main, #FFF5E1);
}

.page-about__value-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.page-about__value-card img {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  min-width: 200px;
  min-height: 200px;
}

.page-about__value-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--gold, #F4D34D);
}

.page-about__feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about__feature-list li {
  background: rgba(255, 255, 255, 0.1);
  border-left: 5px solid var(--gold, #F4D34D);
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
  text-align: left;
  color: var(--text-main, #FFF5E1);
}

.page-about__feature-list li h3 {
  font-size: 20px;
  color: var(--gold, #F4D34D);
  margin-top: 0;
  margin-bottom: 10px;
}

.page-about__feature-list li p {
  font-size: 16px;
  margin-bottom: 0;
  color: var(--text-main, #FFF5E1);
}

/* FAQ styles */
details.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--border, #F2B544);
  overflow: hidden;
  background: var(--card-bg, #D32F2F);
  color: var(--text-main, #FFF5E1);
}

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;
  color: var(--gold, #F4D34D);
}

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: var(--deep-red, #7A0E0E);
}

.page-about__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--gold, #F4D34D);
}

.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--gold, #F4D34D);
  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: var(--deep-red, #7A0E0E);
  border-radius: 0 0 5px 5px;
  text-align: left;
  color: var(--text-main, #FFF5E1);
}

.page-about__faq-answer p {
    color: var(--text-main, #FFF5E1);
    font-size: 16px;
    margin-bottom: 10px;
}

.page-about__faq-answer a {
    color: var(--gold, #F4D34D);
    text-decoration: underline;
}

.page-about__faq-answer a:hover {
    color: var(--glow, #FFCC66);
}

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

.page-about__cta-section {
  padding: 80px 0;
  background: linear-gradient(180deg, #C91F17 0%, #E53935 100%);
  color: var(--text-main, #FFF5E1);
}

.page-about__cta-description {
  font-size: 20px;
  max-width: 800px;
  margin: 0 auto 40px auto;
  color: var(--text-main, #FFF5E1);
}

/* Mobile Responsive Styles */
@media (max-width: 1024px) {
  .page-about__hero-content {
    margin-top: -60px;
    padding: 30px 15px;
  }

  .page-about__main-title {
    font-size: clamp(32px, 4.5vw, 50px);
  }

  .page-about__subtitle {
    font-size: clamp(16px, 2.2vw, 20px);
  }

  .page-about__content-grid,
  .page-about__content-wrapper {
    grid-template-columns: 1fr;
    flex-direction: column;
    gap: 30px;
  }

  .page-about__content-wrapper--reversed {
    flex-direction: column;
  }

  .page-about__image-wrapper {
    order: -1; /* For reversed sections, image comes first on mobile */
  }

  .page-about__section-title {
    font-size: clamp(24px, 3.5vw, 36px);
  }

  .page-about__value-card h3 {
    font-size: 20px;
  }

  .page-about__feature-list li h3 {
    font-size: 18px;
  }

  .page-about__faq-qtext {
    font-size: 16px;
  }
}

@media (max-width: 768px) {
  .page-about__container {
    padding: 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

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

  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px; /* Small top padding for mobile */
    min-height: 400px;
  }

  .page-about__hero-image img {
    object-fit: contain !important; /* Prevent cropping on mobile */
    aspect-ratio: unset !important; /* Allow natural aspect ratio */
    width: 100% !important;
    height: auto !important;
  }

  .page-about__hero-content {
    margin-top: -40px; /* Adjust overlap */
    padding: 25px 15px;
    width: calc(100% - 30px);
    box-sizing: border-box;
  }

  .page-about__main-title {
    font-size: clamp(28px, 8vw, 40px);
    margin-bottom: 15px;
  }

  .page-about__subtitle {
    font-size: clamp(15px, 4vw, 18px);
    margin-bottom: 25px;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  /* 按钮与按钮容器 */
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about__link-button,
  .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: 12px 20px;
    font-size: 16px;
  }

  .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;
  }

  /* 通用图片与容器 */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }

  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__content-grid,
  .page-about__content-wrapper,
  .page-about__values-grid {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__text-block {
    padding: 0;
  }

  .page-about__section-title {
    font-size: clamp(22px, 6vw, 32px);
    margin-bottom: 25px;
  }

  .page-about__text-block p,
  .page-about__feature-list li p {
    font-size: 15px;
  }

  .page-about__value-card {
    padding: 20px;
  }

  .page-about__value-card h3 {
    font-size: 18px;
  }

  .page-about__feature-list li {
    padding: 15px;
  }

  .page-about__feature-list li h3 {
    font-size: 17px;
  }

  /* FAQ styles */
  details.page-about__faq-item summary.page-about__faq-question {
    padding: 15px;
  }

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

  .page-about__faq-toggle {
    font-size: 20px;
    width: 24px;
    height: 24px;
  }

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

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

  .page-about__cta-description {
    font-size: 16px;
    margin-bottom: 30px;
  }
}