diff --git a/postcss.config.js b/postcss.config.js
index e3edee64..fa7d5e7d 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1,9 +1,6 @@
 // PostCSS 配置 - Tailwind CSS v4
-// 文档: https://tailwindcss.com/docs/upgrade-guide
-
 module.exports = {
   plugins: {
     '@tailwindcss/postcss': {},
-    // Tailwind v4 已内置 autoprefixer，不再需要单独配置
   },
 }
diff --git a/src/styles/heroui.css b/src/styles/heroui.css
index 02247dd1..6d347efa 100644
--- a/src/styles/heroui.css
+++ b/src/styles/heroui.css
@@ -2,13 +2,10 @@
 /* 文档: https://v3.heroui.com/docs/quick-start */
 
 /*
- * 重要: Tailwind CSS v4 使用 @tailwind 指令
- * HeroUI v3 样式需要在 Tailwind 之后导入
+ * Tailwind CSS v4 使用 @import 语法
+ * 必须先导入 tailwindcss，再导入 HeroUI 样式
  */
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
+@import "tailwindcss";
 @import "@heroui/styles";
 
 /*
diff --git a/tailwind.config.js b/tailwind.config.js.v3-backup
similarity index 100%
rename from tailwind.config.js
rename to tailwind.config.js.v3-backup