R89 A4-A5 移动导航与工作台重排

client/src/layouts/AppShellLayout.tsx

@@ -30,9 +30,11 @@ export function AppShellLayout() {
       <Sidebar />
 
       <main className="flex min-w-0 flex-1 flex-col lg:ml-72">
-        <Topbar />
+        <div className={isMobileRoute ? "hidden md:block" : ""}>
+          <Topbar />
+        </div>
 
-        <div className={`flex-1 px-4 py-5 sm:px-7 sm:py-7 lg:px-8 ${isMobileRoute ? "pb-24 md:pb-8" : ""}`}>
+        <div className={`flex-1 px-4 py-5 sm:px-7 sm:py-7 lg:px-8 ${isMobileRoute ? "pb-24 pt-4 md:pb-8" : ""}`}>
           <div className="layout-container max-w-none">
             <ErrorBoundary>
               <Outlet />