diff --git a/whitepaper/inject-whitepaper-css.py b/whitepaper/inject-whitepaper-css.py
index 44c47ee..8ff3b5b 100644
--- a/whitepaper/inject-whitepaper-css.py
+++ b/whitepaper/inject-whitepaper-css.py
@@ -38,16 +38,21 @@ main > h1, main > h2, section > h2 {{
 h1.title .period {{
   color: #227842;
 }}
-/* docutils's responsive.css blanket-pads every `body > *`, which
-   explodes the uncloseai floating button to nearly half the viewport.
-   Revert the cascade inside that button so its own stylesheet wins. */
+/* docutils's responsive.css applies a blanket rule to every `body > *`
+   that sets `background-color: white; line-height: 1.6; padding: 0.5rem
+   calc(29% - 7.2rem); margin: auto; max-width: 100rem`. The uncloseai
+   floating button gets appended to <body> and inherits those rules —
+   exploding it to nearly half the viewport and painting its background
+   white (which hides the black pill). Override just the damaged
+   properties so uncloseai's own stylesheet still supplies position,
+   width, height, background, border, and color. */
 body > button#floating-ai-button,
 body > .uncloseai-floating-button {{
-  all: revert;
   padding: 0 !important;
   margin: 0 !important;
-  max-width: none !important;
-  background-color: transparent !important;
+  max-width: calc(100vw - 20px) !important;
+  background-color: unset !important;
+  line-height: normal !important;
 }}
 /* Click-to-zoom lightbox for diagrams. */
 main img, section img {{
diff --git a/whitepaper/lumbda-whitepaper.html b/whitepaper/lumbda-whitepaper.html
index 9e5be86..383200d 100644
--- a/whitepaper/lumbda-whitepaper.html
+++ b/whitepaper/lumbda-whitepaper.html
@@ -825,16 +825,21 @@ main > h1, main > h2, section > h2 {
 h1.title .period {
   color: #227842;
 }
-/* docutils's responsive.css blanket-pads every `body > *`, which
-   explodes the uncloseai floating button to nearly half the viewport.
-   Revert the cascade inside that button so its own stylesheet wins. */
+/* docutils's responsive.css applies a blanket rule to every `body > *`
+   that sets `background-color: white; line-height: 1.6; padding: 0.5rem
+   calc(29% - 7.2rem); margin: auto; max-width: 100rem`. The uncloseai
+   floating button gets appended to <body> and inherits those rules —
+   exploding it to nearly half the viewport and painting its background
+   white (which hides the black pill). Override just the damaged
+   properties so uncloseai's own stylesheet still supplies position,
+   width, height, background, border, and color. */
 body > button#floating-ai-button,
 body > .uncloseai-floating-button {
-  all: revert;
   padding: 0 !important;
   margin: 0 !important;
-  max-width: none !important;
-  background-color: transparent !important;
+  max-width: calc(100vw - 20px) !important;
+  background-color: unset !important;
+  line-height: normal !important;
 }
 /* Click-to-zoom lightbox for diagrams. */
 main img, section img {