/* 极简白底三列网格，仅模型展示 */

html, body {
  margin: 0;
  padding: 0;
  background: #ffffff;
  color: #000000;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

.gallery-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(260px, 1fr));
  gap: 24px;
  justify-items: center;
}

@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(2, minmax(240px, 1fr)); }
}

@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: 1fr; }
}

.gallery-item {
  width: 100%;
}

.gallery-item model-viewer {
  width: 100%;
  height: 360px;
  background: #ffffff;
}

@media (max-width: 640px) {
  .gallery-item model-viewer { height: 260px; }
}