diff --git a/src/styles/global.css b/src/styles/global.css
index 2dfe225..b011f71 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -566,17 +566,22 @@ code {
 
 .qs-grid {
   display: grid;
-  grid-template-columns: 1fr 1fr;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
   gap: 24px;
 }
 
+.qs-card { min-width: 0; }
+
 .qs-card h4 {
   font-size: 1rem;
   font-weight: 700;
   margin-bottom: 16px;
 }
 
-.qs-card .code-window { margin-bottom: 16px; }
+.qs-card .code-window {
+  margin-bottom: 16px;
+  max-width: 100%;
+}
 .qs-card .code-body { font-size: 0.78rem; padding: 14px; }
 
 /* Architecture */