优化多个页面样式与展示文本

src/app/(home)/help/sidebar.tsx

@@ -48,7 +48,7 @@ export default function Sidebar({collapsed = false, selected, onSelect, onToggle
   }
 
   return (
-    <aside className={`bg-white border rounded p-3 transition-all duration-200 flex-shrink-0 ${collapsed ? 'w-20' : 'w-72'}`}>
+    <aside className={`bg-white  rounded p-3 transition-all duration-200 flex-shrink-0 ${collapsed ? 'w-20' : 'w-72'}`}>
       <nav className="space-y-2">
         {MENU.map(section => (
           <div key={section.title}>