.archive-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.archive-thumbs figure {
  margin: 0;
  background: #111;
}

.archive-thumbs img {
  display: block;
  width: 100%;
  aspect-ratio: 1.45;
  object-fit: cover;
}

@media (max-width: 650px) {
  .archive-thumbs { grid-template-columns: repeat(2, 1fr); }
}