diff --git a/apps/desktop/src/styles.css b/apps/desktop/src/styles.css
index f3fe3da0d..a56b87186 100644
--- a/apps/desktop/src/styles.css
+++ b/apps/desktop/src/styles.css
@@ -299,8 +299,11 @@
       'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji', emoji;
     /* Key caps always use the native UI face — never theme typography overrides. */
     --dt-font-kbd: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;
+    /* JetBrains Mono first — the face we bundle (@font-face above) and the
+       terminal's primary — so code/diff match the terminal on every platform
+       instead of drifting to a system Cascadia Code where it's installed. */
     --dt-font-mono:
-      'Cascadia Code', 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, monospace, 'Apple Color Emoji',
+      'JetBrains Mono', 'Cascadia Code', 'SF Mono', ui-monospace, Menlo, Consolas, monospace, 'Apple Color Emoji',
       'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji', emoji;
     --dt-base-size: 1rem;
     --dt-line-height: 1.5;