/* 页面专属样式 - 品牌故事 */
.page-about {
  --color-text-on-light: #0B1D3A;
  --color-bg-alt: #0B1D3A;
  --color-text-on-dark: #FFFFFF;
  --timeline-line-color: #FF6B35;
  --checkmark-color: #00D4FF;
  background: #F4F4F4;
  color: var(--color-text-on-light);
  padding: 2rem 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
}
.page-about__breadcrumb {
  font: var(--font-small);
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}
.page-about__breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-about__breadcrumb a:hover {
  text-decoration: underline;
}
.page-about__title {
  font: var(--font-heading);
  color: var(--color-text-on-light);
  margin: 0 0 3rem;
  letter-spacing: var(--letter-spacing-heading);
}
.page-about__chapter {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 3rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.page-about__chapter:last-of-type {
  border-bottom: none;
}
.page-about__chapter--alt {
  background: var(--color-bg-alt);
  color: var(--color-text-on-dark);
  border-bottom-color: var(--color-primary-light);
}
.page-about__chapter--alt .section__number,
.page-about__chapter--alt .section__title {
  color: var(--color-text-on-dark);
}
.page-about__chapter--alt .page-about__timeline::before {
  background: var(--color-accent-light);
}
.page-about__chapter--alt .page-about__timeline-marker {
  background: var(--color-accent-light);
  border-color: var(--color-bg-alt);
}
.page-about__chapter--alt .btn--outline {
  border-color: var(--color-text-on-dark);
  color: var(--color-text-on-dark);
}
.page-about__chapter--alt .btn--outline:hover {
  background: rgba(255,255,255,0.1);
}
.page-about__chapter-content {
  order: 1;
}
.page-about__image-wrap {
  order: 2;
  width: 100%;
}
.page-about__image {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  border-radius: 4px;
}
.page-about__quote {
  font: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-accent);
  margin: 1.5rem 0;
  padding-left: 1rem;
  border-left: 4px solid var(--color-accent);
  line-height: 1.2;
}
.page-about__timeline {
  position: relative;
  padding-left: 2.5rem;
  margin: 2rem 0;
}
.page-about__timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-line-color);
}
.page-about__timeline-item {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1.5rem;
}
.page-about__timeline-marker {
  position: absolute;
  left: -2rem;
  top: 0.2rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #F4F4F4;
  z-index: 1;
}
.page-about__timeline-title {
  font: var(--font-subheading);
  margin: 0 0 0.5rem;
}
.page-about__timeline-desc {
  font: var(--font-body);
  margin: 0;
}
.page-about__commitment-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  font: var(--font-body);
}
.page-about__commitment-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
}
.page-about__checkmark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  color: var(--checkmark-color);
  flex-shrink: 0;
}
.page-about__checkmark::before {
  content: "✓";
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
}
.page-about__contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}
.page-about__bottom-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
@media (min-width: 768px) {
  .page-about {
    padding: 3rem 2rem;
  }
  .page-about__chapter {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 4rem 2rem;
  }
  .page-about__chapter-content {
    order: 1;
  }
  .page-about__image-wrap {
    order: 2;
  }
  .page-about__chapter--alt .page-about__chapter-content {
    order: 2;
  }
  .page-about__chapter--alt .page-about__image-wrap {
    order: 1;
  }
  .page-about__quote {
    font-size: 3rem;
  }
  .page-about__timeline {
    padding-left: 3rem;
  }
  .page-about__timeline-marker {
    left: -2.5rem;
    width: 22px;
    height: 22px;
  }
}