diff --git a/cli/templates/.vuepress/theme/styles/custom.css b/cli/templates/.vuepress/theme/styles/custom.css
index d3a3696d..16de560b 100644
--- a/cli/templates/.vuepress/theme/styles/custom.css
+++ b/cli/templates/.vuepress/theme/styles/custom.css
@@ -27,7 +27,7 @@
 }
 
 /** 深色模式 */
-.dark {
+[data-theme="dark"] {
   /*
   --vp-c-brand-1: #8cccd5;
   --vp-c-brand-2: #6aa1b7;