.page-header {
  background: #1a1a1a;
  color: #fff;
  padding: 3.5rem 2rem 3rem;
}

.page-header .container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

.breadcrumb {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 1rem;
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "›";
  margin: 0 0.45rem;
  opacity: 0.6;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.15s;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb li[aria-current="page"] {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

.page-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  margin: 0 0 0.6rem;
  line-height: 1.1;
}

.page-lead {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.gallery-grid .museum-image {
  margin: 0;
}

.gallery-grid .museum-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.gallery-grid .museum-image-caption {
  padding: 0.5rem 0;
  font-size: 0.95rem;
  color: #555;
}

.gallery-grid .museum-image img:hover {
  transform: scale(1.03);
}

.gallery-section-label {
  max-width: 1400px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #888;
}

.gallery-grid + .gallery-section-label {
  margin-top: 0;
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding: 1rem;
  }
}

@media (max-width: 340px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}