diff --git a/source/css/_custom.styl b/source/css/_custom.styl
index 3b4db20..d066f0d 100644
--- a/source/css/_custom.styl
+++ b/source/css/_custom.styl
@@ -36,7 +36,7 @@ $dark-site-bg-mobile = black
 //   font-style: normal
 
 $ff-body = system-ui, "Microsoft Yahei", "Segoe UI", -apple-system, Roboto, Ubuntu, "Helvetica Neue", Arial, "WenQuanYi Micro Hei", sans-serif
-$ff-code = Menlo, Monaco, Consolas, "Courier New", monospace, sans-serif
+$ff-code = Menlo, Monaco, Consolas, system-ui, "Courier New", monospace, sans-serif
 
 $ff-logo = $ff-body