.page-about {
  font-family: 'Arial', sans-serif;
  color: var(--text-main);
  background-color: var(--background-color);
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

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

.page-about__dark-section {
  background-color: var(--background-color);
  color: var(--text-main);
}

.page-about__light-bg {
  background-color: #0d1e16; /* A slightly lighter dark green for contrast */
  color: var(--text-main);
}

.page-about__section-title {
  font-size: 38px;
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--text-main);
  line-height: 1.2;
}

.page-about__sub-title {
  font-size: 28px;
  font-weight: 600;
  margin-top: 30px;
  margin-bottom: 20px;
  color: var(--text-main);
  line-height: 1.3;
}

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

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

.page-about__text-block {
  flex: 1;
}

.page-about__text-block p {
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 15px;
  color: var(--text-secondary);
}

.page-about__image-block {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about__image-block img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  object-fit: cover;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding */
  padding-bottom: 60px;
  overflow: hidden;
}

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

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

.page-about__hero-content {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-about__main-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.2;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__description {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 40px auto;
  line-height: 1.6;
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 700;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
  box-sizing: border-box;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #F2FFF6;
  border: 2px solid transparent;
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 15px rgba(42, 209, 111, 0.4);
}

.page-about__btn-secondary {
  background: transparent;
  color: #F2FFF6;
  border: 2px solid var(--border-color);
}

.page-about__btn-secondary:hover {
  background: var(--border-color);
  color: var(--text-main);
}

/* FAQ Section */
.page-about__faq-section {
  padding-top: 80px;
  padding-bottom: 80px;
  background-color: var(--card-bg);
}

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

details.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--background-color);
  border: 1px solid var(--divider-color);
}

details.page-about__faq-item summary.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: var(--text-main);
}

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: #11271B; /* Slightly darker card bg */
}

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

.page-about__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--glow);
  flex-shrink: 0;
  margin-left: 20px;
  width: 30px;
  text-align: center;
}

details.page-about__faq-item .page-about__faq-answer {
  padding: 0 25px 20px;
  background: var(--card-bg);
  border-radius: 0 0 10px 10px;
  color: var(--text-secondary);
}

details.page-about__faq-item .page-about__faq-answer p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 0;
}

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

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

  .page-about__description {
    font-size: 18px;
    max-width: 700px;
  }

  .page-about__section-title {
    font-size: 34px;
  }

  .page-about__sub-title {
    font-size: 24px;
  }

  .page-about__text-block p {
    font-size: 16px;
  }

  .page-about__content-wrapper {
    flex-direction: column;
    gap: 30px;
  }

  .page-about__content-reverse {
    flex-direction: column;
  }

  .page-about__image-block img {
    max-width: 90%;
  }

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

  .page-about__btn-primary, .page-about__btn-secondary {
    width: 80%;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px;
    padding-bottom: 40px;
  }

  .page-about__hero-image img {
    object-fit: contain !important; /* 移动端禁止裁切两侧 */
    aspect-ratio: unset !important;
    filter: brightness(0.3);
  }

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

  .page-about__main-title {
    font-size: clamp(28px, 8vw, 42px);
    margin-bottom: 15px;
  }

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

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

  .page-about__section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

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

  .page-about__text-block p {
    font-size: 15px;
    line-height: 1.7;
  }

  /* 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__content-wrapper,
  .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__cta-buttons {
    flex-direction: column !important; /* 强制垂直排列 */
    gap: 10px !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    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;
  }

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

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

  .page-about__faq-toggle {
    font-size: 24px;
    margin-left: 15px;
    width: 25px;
  }

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

  details.page-about__faq-item .page-about__faq-answer p {
    font-size: 14px;
  }
}