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client/src/index.css

@@ -122,6 +122,10 @@ html.is-chrome .qa-card .icon-wrap { flex-shrink: 0; }
 /* ensure identical spacing as Safari via explicit margins */
 html.is-chrome .qa-card .icon-wrap + div { margin-left: 1rem; }
 
+/* Chrome-only: isolate layout/paint for smoother scroll */
+html.is-chrome .qa-grid { contain: layout paint; }
+html.is-chrome .qa-card { will-change: transform; transform: translateZ(0); backface-visibility: hidden; }
+
 /* Custom scrollbar */
 ::-webkit-scrollbar {
   width: 8px;