Index: src/views/pages/circle-feed.ejs
===================================================================
--- src/views/pages/circle-feed.ejs	(revision a4040183bed903792d41634fe30b94210d87823c)
+++ src/views/pages/circle-feed.ejs	(revision fdfd31b8f41a7882b42e7f655317536b09f34afd)
@@ -85,3 +85,7 @@
 .cirkel-empty { color: var(--ink-muted); text-align: center; margin: 2rem auto; }
 .cirkel-empty a { color: var(--accent); }
+/* Transparent PNG covers (e.g. logos) sit on white in the Cirkel so they don't
+   blend into the dark card. Opaque covers fully cover the white — no change. */
+.on-cirkel .grid-tile:not(.grid-tile-gradient) { background-color: #fff; }
+.on-cirkel .post-card img { background-color: #fff; }
 </style>