diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
index 901ab99..269dfe0 100644
--- a/src/components/Sidebar.tsx
+++ b/src/components/Sidebar.tsx
@@ -17,7 +17,7 @@ const Sidebar: React.FC = () => {
   ]
 
   return (
-    <div className="w-64 bg-white border-r border-secondary-200 flex flex-col">
+    <div className="w-48 bg-white border-r border-secondary-200 flex flex-col">
       <div className="p-4 border-b border-secondary-200">
         <h2 className="text-lg font-semibold text-secondary-900">工作区</h2>
       </div>
diff --git a/src/pages/AIVideoPage.tsx b/src/pages/AIVideoPage.tsx
index 3766936..8bd5c72 100644
--- a/src/pages/AIVideoPage.tsx
+++ b/src/pages/AIVideoPage.tsx
@@ -96,7 +96,7 @@ const AIVideoPage: React.FC = () => {
           </div>
 
           {/* Sidebar */}
-          <div className="w-80 bg-white border-l border-secondary-200 p-6 overflow-y-auto">
+          <div className="w-64 bg-white border-l border-secondary-200 p-6 overflow-y-auto">
             <h3 className="text-lg font-semibold text-secondary-900 mb-4">使用说明</h3>
             
             <div className="space-y-4">
diff --git a/src/pages/EditorPage.tsx b/src/pages/EditorPage.tsx
index 6666c5f..2d41e3b 100644
--- a/src/pages/EditorPage.tsx
+++ b/src/pages/EditorPage.tsx
@@ -63,7 +63,7 @@ const EditorPage: React.FC = () => {
 
       <div className="flex flex-1 min-h-0">
         {/* Media Library Sidebar */}
-        <MediaLibrary className="w-64" />
+        <MediaLibrary className="w-48" />
 
         {/* Main Content */}
         <div className="flex-1 flex flex-col">