Index: src/views/partials/post-card.ejs
===================================================================
--- src/views/partials/post-card.ejs	(revision 5f3f9ec002fdbf1dddd640956bd34915e10695df)
+++ src/views/partials/post-card.ejs	(revision 86fa2d2795c9ba37e01a9f0c0315a1ca031b645d)
@@ -154,4 +154,6 @@
   }
   .post-list-cover img.is-loading { opacity: 0; }
+  /* A video cover keeps its aspect ratio (centered, letterboxed) in the square slot, not zoom-cropped. */
+  .post-list-cover video { object-fit: contain; background: var(--paper-2, #0a0e1a); }
 
   /* Re-apply rounded corners on slightly larger phones */