.jsm-gallery{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
@media (max-width: 900px){
  .jsm-gallery{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px){
  .jsm-gallery{ grid-template-columns: 1fr; }
}
.jsm-gallery-card{
  margin:0;
  overflow:hidden;
  border-radius:8px;
  background:#f6f7f9;
  border:1px solid #e6e6e6;
}
.jsm-gallery-img{
  width:100%;
  height:100%;
  display:block;
  aspect-ratio: 4 / 3;
  object-fit:cover;
}
.jsm-gallery-empty{ color:#666; font-style:italic; }