diff --git a/src/static_src/scss/_game-kit.scss b/src/static_src/scss/_game-kit.scss
index 845c02d..b8eb424 100644
--- a/src/static_src/scss/_game-kit.scss
+++ b/src/static_src/scss/_game-kit.scss
@@ -3,16 +3,17 @@
     bottom: 0.5rem;
     right: 0.5rem;
 
+    // In landscape, centre the 3rem-wide btn within the var(--sidebar-w)
+    // footer sidebar — matches the bud-btn (bottom-left) + gear-btn (above
+    // kit-btn) formula. The clamp on the root rem means the sidebar scales
+    // fluidly, so this single rule covers all viewports without a per-
+    // breakpoint override.
     @media (orientation: landscape) {
-        right: 1rem;
+        right: calc((var(--sidebar-w) - 3rem) / 2);
         bottom: 0.5rem;
         top: auto;
     }
 
-    @media (orientation: landscape) and (min-width: 1800px) {
-        right: 2.5rem;  // centre in doubled 8rem sidebar
-    }
-
     z-index: 318;
     font-size: 1.75rem;
     cursor: pointer;