.product-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

@media (max-width: 860px) {
  .product-detail-layout { grid-template-columns: 1fr; }
}

.product-detail-gallery {
  display: flex;
  gap: 14px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.product-detail-gallery-main {
  flex: 1 1 auto;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.product-detail-gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  -webkit-user-drag: none;
}

.product-detail-gallery-strip {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 0 0 76px;
}

.product-detail-gallery-thumb {
  width: 76px;
  height: 76px;
  padding: 0;
  border: 2px solid var(--line-2);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.product-detail-gallery-thumb:hover { transform: translateY(-2px); }
.product-detail-gallery-thumb.is-active { border-color: var(--biru-boss); }
.product-detail-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-user-drag: none;
}

@media (max-width: 480px) {
  .product-detail-gallery { flex-direction: column-reverse; }
  .product-detail-gallery-strip { flex-direction: row; flex: 0 0 auto; overflow-x: auto; }
  .product-detail-gallery-thumb { flex: 0 0 64px; width: 64px; height: 64px; }
}

.product-detail-title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
}

.product-detail-description h2,
.product-detail-specs h2 {
  font-size: var(--h4);
  margin: 0 0 12px;
}

.product-detail-description {
  margin-bottom: clamp(24px, 3.4vw, 40px);
  max-width: var(--container-narrow);
}
.product-detail-description p { color: var(--text-2); line-height: 1.7; }

.product-detail-specs { margin-bottom: clamp(24px, 3.4vw, 40px); }

.product-detail-side .pdf-preview {
  margin-top: 0;
  max-width: none;
  margin-inline: 0;
}
.product-detail-side .pdf-preview-card { width: 100%; }
.product-detail-side .pdf-preview-thumb { width: 100%; height: auto; aspect-ratio: 1 / 1; }

@media (max-width: 860px) {
  .product-detail-side { max-width: 340px; }
}