.page-about {
  color: #ffffff; /* Default text color for dark body background */
  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;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 600px;
  padding: 100px 0;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  color: #ffffff;
  padding-top: 0; /* Assuming shared.css handles body padding-top */
}

.page-about__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.page-about__main-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  color: #ffffff;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__intro-text {
  font-size: 1.3em;
  margin-bottom: 40px;
  max-width: 800px;
  color: #ffffff;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  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: #26A9E0;
  color: #ffffff;
  border: 2px solid #26A9E0;
}

.page-about__btn-primary:hover {
  background: #1e87c2;
  border-color: #1e87c2;
}

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

.page-about__btn-secondary:hover {
  background: #ffffff;
  color: #26A9E0;
}

.page-about__section {
  padding: 80px 0;
}

.page-about__section-title {
  font-size: 2.5em;
  text-align: center;
  margin-bottom: 20px;
  color: #26A9E0; /* Brand color for titles on dark backgrounds */
}

.page-about__section-description {
  font-size: 1.1em;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
  color: #ffffff; /* Default for dark bg */
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.page-about__content-grid--reverse {
  grid-template-columns: 1fr 1fr;
}

.page-about__text-block {
  color: #ffffff; /* Default for dark bg */
}

.page-about__text-block p {
  margin-bottom: 15px;
  font-size: 1.1em;
}

.page-about__image-content {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-about__core-values .page-about__section-title,
.page-about__future-vision .page-about__section-title {
  color: #26A9E0;
}

.page-about__core-values .page-about__section-description,
.page-about__future-vision .page-about__section-description {
  color: #333333; /* Dark text for light background */
}

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

.page-about__value-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  color: #ffffff;
}

.page-about__light-bg {
  background: #FFFFFF;
  color: #333333; /* Dark text for light background */
}

.page-about__light-bg .page-about__section-title {
  color: #26A9E0;
}

.page-about__light-bg .page-about__section-description {
  color: #333333;
}

.page-about__light-bg .page-about__text-block,
.page-about__light-bg .page-about__text-block p {
  color: #333333;
}

.page-about__light-bg .page-about__value-item {
  background: #f9f9f9;
  color: #333333;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.page-about__dark-bg {
  background: var(--black-color); /* Assuming shared.css defines --black-color as dark */
  color: #ffffff;
}

.page-about__dark-bg .page-about__section-title {
  color: #26A9E0;
}

.page-about__dark-bg .page-about__section-description {
  color: #f0f0f0;
}

.page-about__dark-bg .page-about__text-block,
.page-about__dark-bg .page-about__text-block p {
  color: #f0f0f0;
}

.page-about__value-title {
  font-size: 1.5em;
  margin-bottom: 15px;
  color: #26A9E0;
}

.page-about__contact-us {
  text-align: center;
  padding-bottom: 100px;
}

.page-about__contact-info {
  margin-top: 40px;
  font-size: 1.1em;
  color: #ffffff;
}

.page-about__contact-info p {
  margin-bottom: 20px;
}

.page-about__contact-list {
  list-style: none;
  padding: 0;
  margin: 30px auto;
  max-width: 400px;
}

.page-about__contact-list li {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  color: #ffffff;
}

.page-about__icon {
  margin-right: 15px;
  font-size: 1.5em;
  color: #26A9E0;
}

.page-about__contact-link {
  color: #26A9E0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about__contact-link:hover {
  color: #1e87c2;
}

/* Placeholder for font icons, assuming they are provided by shared.css or a font library */
.page-about__icon--email::before { content: '📧'; /* Example, replace with actual icon font */ }
.page-about__icon--phone::before { content: '📞'; /* Example */ }
.page-about__icon--livechat::before { content: '💬'; /* Example */ }


/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-about__main-title {
    font-size: 3em;
  }

  .page-about__intro-text {
    font-size: 1.2em;
  }

  .page-about__section-title {
    font-size: 2em;
  }

  .page-about__content-grid {
    gap: 40px;
  }

  .page-about__value-title {
    font-size: 1.3em;
  }

  .page-about__hero-section {
    min-height: 500px;
    padding: 80px 0;
  }

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

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

  /* HERO 主图区域 */
  .page-about__hero-section {
    min-height: 400px;
    padding: 60px 15px;
    padding-top: 0; /* Assuming shared.css handles body padding-top */
  }

  .page-about__main-title {
    font-size: 2.2em !important;
    margin-bottom: 15px;
  }

  .page-about__intro-text {
    font-size: 1em !important;
    margin-bottom: 30px;
  }

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

  /* 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__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  /* 其他内容模块 - section/card/container */
  .page-about__section {
    padding: 40px 0;
  }

  .page-about__container {
    padding: 0 15px !important;
  }

  .page-about__section-title {
    font-size: 1.8em !important;
    margin-bottom: 15px;
  }

  .page-about__section-description {
    font-size: 0.95em !important;
    margin-bottom: 30px;
  }

  .page-about__content-grid {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
  }

  .page-about__content-grid--reverse {
    grid-template-columns: 1fr !important;
  }

  .page-about__text-block p {
    font-size: 1em !important;
  }

  .page-about__values-grid {
    grid-template-columns: 1fr !important;
  }

  .page-about__value-item {
    padding: 20px !important;
  }

  .page-about__value-title {
    font-size: 1.2em !important;
  }

  .page-about__contact-list {
    max-width: 100% !important;
  }

  /* 通用图片与容器 */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !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 !important;
    padding-right: 15px !important;
  }

  /* 产品展示图区域 - Not explicitly present in this about page, but included for completeness as per checklist */
  /* If there were product cards, their grid would collapse to 1 column */
  .page-about__products-grid {
    grid-template-columns: 1fr !important; /* Example for product grid if it existed */
  }
}