diff --git a/src/client/theme-default/styles/vars.css b/src/client/theme-default/styles/vars.css
index de5c4908..c7083dcc 100644
--- a/src/client/theme-default/styles/vars.css
+++ b/src/client/theme-default/styles/vars.css
@@ -268,7 +268,7 @@
   font-optical-sizing: auto;
 }
 
-:root:lang(zh) {
+:root:where(:lang(zh)) {
   --vp-font-family-base: 'Punctuation SC', 'Inter', ui-sans-serif, system-ui,
     'PingFang SC', 'Noto Sans CJK SC', 'Noto Sans SC', 'Heiti SC', 'DengXian',
     'Microsoft YaHei', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',