feat: Redesign the home page hero section with a new background image and enhanced search UI, and standardize user dashboard routing across the application.

src/app/(user)/layout.tsx

@@ -38,10 +38,12 @@ export default function UserLayout({
   }
 
   return (
-    <div className="min-h-screen bg-white flex flex-col">
+    <div className="min-h-screen bg-[#f0f4f3] flex flex-col">
       {/* Header */}
-      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6 w-full">
-        <CommonHeader />
+      <div className="sticky top-0 z-50 px-4 py-3 bg-[#f0f4f3]">
+        <div className="max-w-7xl mx-auto">
+          <CommonHeader />
+        </div>
       </div>
 
       {/* Main Content */}