/* Library card thumbnails (opt-in via .option-block--thumb) */
.option-block--thumb {
  display: grid;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}
.option-block--thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}
.option-block--thumb h3 { margin-bottom: 0.35rem; }
.option-block--thumb p { margin-bottom: 0; }