.ig-grid {
  --ig-columns: 3 !important;
  --ig-gap: 8px !important;

  display: grid;
  grid-template-columns: repeat(var(--ig-columns), minmax(0, 1fr));
  gap: var(--ig-gap);
  margin: 0;
  padding: 0;
}

/* 列数を個別に指定する場合 */
.ig-grid.columns-1 {
  --ig-columns: 1;
}

.ig-grid.columns-2 {
  --ig-columns: 2;
}

.ig-grid.columns-3 {
  --ig-columns: 3;
}

.ig-grid.columns-4 {
  --ig-columns: 4;
}

.ig-grid.columns-5 {
  --ig-columns: 5;
}

.ig-grid.columns-6 {
  --ig-columns: 6;
}

.ig-item {
  min-width: 0;
  overflow: hidden;
}

.ig-item a {
  display: block;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  border-radius: 8px;
}

.ig-item img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  opacity: 0;
  transition:
    opacity 0.25s ease,
    transform 0.3s ease;
}

.ig-item img.is-loaded {
  opacity: 1;
}

.ig-item a:hover img,
.ig-item a:focus-visible img {
  transform: scale(1.05);
}

.ig-caption {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.ig-item.is-image-error {
  display: none;
}

/* タブレット：4列 */
@media (min-width: 768px) {
  .ig-grid {
    --ig-columns: 4 !important;
    --ig-gap: 12px !important;
  }
}

/* PC：6列 */
@media (min-width: 1024px) {
  .ig-grid {
    --ig-columns: 6 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ig-item img {
    transition: none;
  }

  .ig-item a:hover img,
  .ig-item a:focus-visible img {
    transform: none;
  }
}