diff --git a/src/material/Tab.css b/src/material/Tab.css
index 83bff90..38f49d3 100644
--- a/src/material/Tab.css
+++ b/src/material/Tab.css
@@ -9,6 +9,15 @@
   font-weight: 600;
   text-transform: uppercase;
   transition: color 120ms var(--tutu-anim-curve-std);
+
+  :root:where([lang^="zh"],
+    [lang="zh"],
+    [lang^="kr"],
+    [lang="kr"],
+    [lang^="ja"],
+    [lang="ja"]) & {
+    font-size: 0.85rem;
+  }
 }
 
 .MuiToolbar-root .Tab {