Merge nucleic/lucid-willow-panda-uctw into main

Mirrored from corpo 359efff.

src/pages/index.astro

@@ -459,7 +459,14 @@ const canonical = new URL('/', Astro.site);
     display: grid;
     min-height: 0;
     overflow-y: auto;
-    overscroll-behavior-y: contain;
+    /* none, not contain: contain only stops the gesture chaining to the document, it
+       leaves this scroller its own rubber-band. Overscrolling past the top drags the
+       sticky hero copy and card down with the content — they sit at their flow
+       position again the moment the scroll offset is above their inset — so the one
+       composition that is meant to never move is exactly what the bounce moves. This
+       is the inner scroller only; the document keeps whatever bounce it has, so the
+       pull-to-refresh gesture on the masthead and footer is untouched. */
+    overscroll-behavior-y: none;
     scrollbar-width: none;
     -ms-overflow-style: none;
     -webkit-overflow-scrolling: touch;