diff --git a/public/demo/libredb-studio-demo-mobile.html b/public/demo/libredb-studio-demo-mobile.html
index a941e47..6347022 100644
--- a/public/demo/libredb-studio-demo-mobile.html
+++ b/public/demo/libredb-studio-demo-mobile.html
@@ -10,6 +10,13 @@
     #__bundler_thumbnail { position: fixed; inset: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: #030303; z-index: 9999; }
     #__bundler_thumbnail svg { width: 100%; height: 100%; object-fit: contain; }
     #__bundler_placeholder { color: #999; font-size: 14px; }
+    /* libredb-website patch: the unpack placeholder — a blue bolt on a dark card,
+       plus an "Unpacking..." pill — flashed in the frame before the walkthrough
+       appeared. Our wrapper already paints the box, so hide both and let the
+       frame stay empty until the real document replaces this one. Nothing in
+       the unpacking script touches these two elements. Re-apply if these
+       bundles are regenerated. */
+    #__bundler_thumbnail, #__bundler_loading { display: none !important; }
   </style>
   <noscript>
     <style>#__bundler_loading { display: none; }</style>
diff --git a/public/demo/libredb-studio-demo.html b/public/demo/libredb-studio-demo.html
index 91fa002..4022d5e 100644
--- a/public/demo/libredb-studio-demo.html
+++ b/public/demo/libredb-studio-demo.html
@@ -10,6 +10,13 @@
     #__bundler_thumbnail { position: fixed; inset: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: #030303; z-index: 9999; }
     #__bundler_thumbnail svg { width: 100%; height: 100%; object-fit: contain; }
     #__bundler_placeholder { color: #999; font-size: 14px; }
+    /* libredb-website patch: the unpack placeholder — a blue bolt on a dark card,
+       plus an "Unpacking..." pill — flashed in the frame before the walkthrough
+       appeared. Our wrapper already paints the box, so hide both and let the
+       frame stay empty until the real document replaces this one. Nothing in
+       the unpacking script touches these two elements. Re-apply if these
+       bundles are regenerated. */
+    #__bundler_thumbnail, #__bundler_loading { display: none !important; }
   </style>
   <noscript>
     <style>#__bundler_loading { display: none; }</style>