.adg-media-gallery .adg-grid { 
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:repeat(4,1fr); gap:12px;
}
.adg-media-gallery .adg-item img, 
.adg-media-gallery .adg-item video { width:100%; height:auto; display:block; }
@media (max-width: 1000px){ .adg-media-gallery .adg-grid { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 768px){ .adg-media-gallery .adg-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px){ .adg-media-gallery .adg-grid { grid-template-columns: 1fr; } }