优化PC核心工作流视觉 Wave2（05-27-pc-core-workflow-visual-wave2）

client/src/layouts/AuthLayout.tsx

@@ -6,21 +6,17 @@ export function AuthLayout() {
   const { updateReady, applyUpdate, dismissUpdate } = usePwaUpdatePrompt();
 
   return (
-    <div className="relative min-h-screen overflow-hidden bg-[#f4f7fa] px-4 py-8 sm:px-6 lg:px-10">
+    <div className="auth-shell relative min-h-screen overflow-hidden px-4 py-8 sm:px-6 lg:px-10">
       <div
         aria-hidden="true"
-        className="pointer-events-none absolute inset-0 opacity-70"
-        style={{
-          backgroundImage: "linear-gradient(rgba(15, 23, 42, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 23, 42, 0.045) 1px, transparent 1px)",
-          backgroundSize: "44px 44px",
-        }}
+        className="auth-shell__grid pointer-events-none absolute inset-0"
       />
-      <div aria-hidden="true" className="pointer-events-none absolute inset-x-0 top-0 h-1 bg-[linear-gradient(90deg,#00398a,#0f766e)]" />
-      <div className="relative mx-auto flex min-h-[calc(100vh-4rem)] max-w-[448px] flex-col justify-center">
+      <div aria-hidden="true" className="auth-shell__rail pointer-events-none absolute inset-y-8 left-[max(1rem,calc((100vw-520px)/2-88px))] hidden w-px lg:block" />
+      <div className="relative mx-auto flex min-h-[calc(100vh-4rem)] max-w-[460px] flex-col justify-center">
         {updateReady ? (
-          <div className="mb-4 rounded-xl border border-primary/20 bg-primary/5 px-4 py-3 text-sm text-slate-700" data-testid="auth-pwa-update-notice">
+          <div className="mb-4 rounded-lg border border-primary/20 bg-white/95 px-4 py-3 text-sm text-slate-700 shadow-sm" data-testid="auth-pwa-update-notice">
             <div className="font-medium text-slate-900">系统有新版本</div>
-            <div className="mt-1 leading-6">完成当前输入后刷新页面即可更新，当前表单不会被自动打断。</div>
+            <div className="mt-1 leading-6">刷新由你确认，当前输入不会被自动清空。</div>
             <div className="mt-3 flex gap-2">
               <Button size="sm" type="button" onClick={applyUpdate}>
                 现在刷新