收敛 PC 工作台视觉 05-27-pc-frontend-visual-consistency-wave1

client/src/components/navigation/Topbar.tsx

@@ -135,7 +135,7 @@ export function Topbar() {
 
   return (
     <>
-      <header className="sticky top-0 z-10 border-b border-slate-200/80 bg-white/88 px-4 py-3 shadow-[0_10px_30px_rgba(15,23,42,0.06)] backdrop-blur-xl sm:px-8">
+      <header className="sticky top-0 z-10 border-b border-slate-200/80 bg-white/94 px-4 py-3 shadow-[0_4px_14px_rgba(15,23,42,0.035)] sm:px-8">
         <div className="flex items-center justify-between gap-4">
           <div className="flex min-w-0 items-center gap-3">
             <Dialog open={mobileNavOpen} onOpenChange={setMobileNavOpen}>