.quantization-figure { margin: 2rem 0; }
.quantization-panels {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .35rem;
}
.quantization-panel { min-width: 0; }
.quantization-panel img { display: block; width: 100%; height: auto; }
.quantization-panel strong {
  display: block;
  padding: .45rem .2rem;
  color: var(--ink);
  font-size: .82rem;
  text-align: center;
}
.quantization-figure figcaption { margin-top: .55rem; font-size: .96rem; line-height: 1.45; }
@media (max-width: 34rem) {
  .quantization-panels { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}