diff --git a/src/css/custom.css b/src/css/custom.css
index b3b5cf131b..0f20b491da 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -104,13 +104,16 @@ x-search {
   visibility: hidden;
 }
 
-/* Navbar logo uses ThemedComponent which sets display:none as base,
-   relying on [data-theme] selectors to show. This causes flicker
-   during navigation. Force it always visible since we use one logo. */
+/* Keep the shared light/dark logo visible during navigation, but hide the
+   duplicate image rendered before Docusaurus hydrates. */
 .navbar__brand img {
   display: initial !important;
 }
 
+.navbar__brand img + img {
+  display: none !important;
+}
+
 
 /* ----------------------------------------------------------------------------
    Algolia DocSearch — brand colour alignment