.page-about {
  position: relative;
  min-height: 100vh;
}
.page-about .bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}
.page-about .bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3) saturate(0.8);
}
.page-about .page-content {
  position: relative;
  z-index: 1;
  padding: var(--spacing-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}
.page-about .breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}
.page-about .breadcrumb a {
  color: var(--color-accent1);
  text-decoration: none;
}
.page-about .breadcrumb a::after {
  content: " / ";
  color: var(--color-text-secondary);
}
.page-about .breadcrumb span[aria-current] {
  color: var(--color-text);
}
.page-about .chapter {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  background: rgba(10, 31, 63, 0.8);
  border: 1px solid var(--color-accent2);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  position: relative;
  animation: fadeInUp 0.6s ease-out both;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-about .chapter-marker {
  flex: 0 0 80px;
  text-align: center;
}
.page-about .section-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  line-height: 1;
  color: var(--color-accent2);
  display: block;
}
.page-about .section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
}
.page-about .section-desc {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}
.page-about .media-block {
  margin-top: var(--spacing-md);
}
.page-about .chapter-img {
  max-width: 100%;
  height: auto;
  border: 2px solid var(--color-accent1);
  transition: transform var(--transition-base);
}
.page-about .chapter-img:hover {
  transform: scale(1.05);
}
.page-about .tag-label {
  display: inline-block;
  background: var(--color-accent2);
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  margin-top: var(--spacing-xs);
}
.page-about .capability-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-about .capability-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.page-about .capability-list li:last-child {
  border-bottom: none;
}
.page-about .capability-list strong {
  color: var(--color-accent1);
  display: block;
  font-size: 1.1rem;
}
.page-about .capability-list a {
  color: var(--color-accent1);
  text-decoration: underline;
}
@media (max-width: 768px) {
  .page-about .chapter {
    flex-direction: column;
    padding: var(--spacing-md);
  }
  .page-about .chapter-marker {
    flex: none;
    text-align: left;
  }
  .page-about .section-number {
    font-size: 2.5rem;
  }
  .page-about .section-title {
    font-size: 1.75rem;
  }
  .page-about .page-content {
    padding: var(--spacing-sm);
    margin: 0;
  }
  .page-about .capability-list li {
    padding: var(--spacing-xs) 0;
  }
}