fix(pc-detail-responsive-approval-polish): 协调详情断点并收敛审批展示

client/src/components/navigation/Topbar.tsx

@@ -143,7 +143,7 @@ export function Topbar() {
           <div className="flex min-w-0 items-center gap-3">
             <Dialog open={mobileNavOpen} onOpenChange={setMobileNavOpen}>
               <DialogTrigger asChild>
-                <Button className="lg:hidden" size="icon" variant="secondary" aria-label="打开菜单" type="button">
+                <Button className="xl:hidden" size="icon" variant="secondary" aria-label="打开菜单" type="button">
                   <MenuIcon />
                 </Button>
               </DialogTrigger>