diff --git a/app/layout.jsx b/app/layout.jsx
index f7aa16b..fe12fab 100644
--- a/app/layout.jsx
+++ b/app/layout.jsx
@@ -1,3 +1,4 @@
+import { Toaster } from '@/components/ui/sonner';
 import './globals.css';
 import AnalyticsGate from './components/AnalyticsGate';
 import packageJson from '../package.json';
@@ -27,8 +28,9 @@ export default function RootLayout({ children }) {
       />
     </head>
     <body>
-    <AnalyticsGate GA_ID={GA_ID} />
-    {children}
+      <AnalyticsGate GA_ID={GA_ID} />
+      {children}
+      <Toaster />
     </body>
     </html>
   );
diff --git a/app/page.jsx b/app/page.jsx
index 73fb29b..00c0dc3 100644
--- a/app/page.jsx
+++ b/app/page.jsx
@@ -61,6 +61,7 @@ import WeChatModal from "./components/WeChatModal";
 import DcaModal from "./components/DcaModal";
 import githubImg from "./assets/github.svg";
 import { supabase, isSupabaseConfigured } from './lib/supabase';
+import { toast as sonnerToast } from 'sonner';
 import { recordValuation, getAllValuationSeries, clearFund } from './lib/valuationTimeseries';
 import { loadHolidaysForYears, isTradingDay as isDateTradingDay } from './lib/tradingCalendar';
 import { parseFundTextWithLLM, fetchFundData, fetchLatestRelease, fetchShanghaiIndexDate, fetchSmartFundNetValue, searchFunds } from './api/fund';
@@ -4216,6 +4217,10 @@ export default function HomePage() {
             <button
               className="link-button"
               onClick={() => {
+                if (!user?.id) {
+                  sonnerToast.error('请先登录后再提交反馈');
+                  return;
+                }
                 setFeedbackNonce((n) => n + 1);
                 setFeedbackOpen(true);
               }}
diff --git a/components/ui/sonner.jsx b/components/ui/sonner.jsx
new file mode 100644
index 0000000..0c5ff72
--- /dev/null
+++ b/components/ui/sonner.jsx
@@ -0,0 +1,61 @@
+"use client"
+
+import {
+  CircleCheckIcon,
+  InfoIcon,
+  Loader2Icon,
+  OctagonXIcon,
+  TriangleAlertIcon,
+} from "lucide-react"
+import { useTheme } from "next-themes"
+import { Toaster as Sonner } from "sonner";
+
+const Toaster = ({ ...props }) => {
+  const { theme = "system" } = useTheme();
+
+  return (
+    <Sonner
+      theme={theme}
+      // 外层容器：固定在页面顶部中间
+      className="toaster pointer-events-none fixed inset-x-0 top-4 z-[70] flex items-start justify-center px-4 sm:top-6"
+      icons={{
+        success: <CircleCheckIcon className="h-4 w-4 text-emerald-500" />,
+        info: <InfoIcon className="h-4 w-4 text-sky-500" />,
+        warning: <TriangleAlertIcon className="h-4 w-4 text-amber-500" />,
+        error: <OctagonXIcon className="h-4 w-4 text-destructive" />,
+        loading: <Loader2Icon className="h-4 w-4 animate-spin text-primary" />,
+      }}
+      richColors
+      // 统一 toast 样式，使用 ui-ux-pro-max 建议的明暗主题对比度
+      toastOptions={{
+        classNames: {
+          toast:
+            // 基础：浅色模式下使用高对比白色卡片，暗色模式使用深色卡片
+            "pointer-events-auto relative flex w-full max-w-sm items-start gap-3 rounded-xl border border-slate-200 bg-white/90 text-slate-900 px-4 py-3 shadow-lg shadow-black/10 backdrop-blur-md transition-all duration-200 " +
+            "data-[state=open]:animate-in data-[state=open]:fade-in data-[state=open]:slide-in-from-top sm:data-[state=open]:slide-in-from-bottom " +
+            "data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=closed]:slide-out-to-right " +
+            "data-[swipe=move]:translate-x-[var(--sonner-swipe-move-x)] data-[swipe=move]:transition-none " +
+            "data-[swipe=cancel]:translate-x-0 data-[swipe=cancel]:transition-transform data-[swipe=end]:translate-x-[var(--sonner-swipe-end-x)] " +
+            "dark:border-slate-800 dark:bg-slate-900/90 dark:text-slate-100",
+          title: "text-sm font-medium",
+          description: "mt-1 text-xs text-slate-600 dark:text-slate-400",
+          closeButton:
+            "cursor-pointer text-muted-foreground/70 transition-colors hover:text-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
+          actionButton:
+            "inline-flex h-8 items-center justify-center rounded-full bg-primary px-3 text-xs font-medium text-primary-foreground shadow-sm transition-colors hover:bg-primary/90 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary focus-visible:ring-offset-2",
+          cancelButton:
+            "inline-flex h-8 items-center justify-center rounded-full border border-border bg-background px-3 text-xs font-medium text-foreground shadow-sm transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
+          // 状态色：成功/信息/警告只强化边框，错误使用红色背景，满足你“提示为红色”的需求
+          success: "border-emerald-500/70",
+          info: "border-sky-500/70",
+          warning: "border-amber-500/70",
+          error: "bg-destructive text-destructive-foreground border-destructive/80",
+          loading: "border-primary/60",
+        },
+      }}
+      {...props}
+    />
+  );
+};
+
+export { Toaster }
diff --git a/package-lock.json b/package-lock.json
index d577069..312a14f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26,10 +26,12 @@
         "lodash": "^4.17.23",
         "lucide-react": "^0.577.0",
         "next": "^16.1.5",
+        "next-themes": "^0.4.6",
         "radix-ui": "^1.4.3",
         "react": "18.3.1",
         "react-chartjs-2": "^5.3.1",
         "react-dom": "18.3.1",
+        "sonner": "^2.0.7",
         "tailwind-merge": "^3.5.0",
         "tesseract.js": "^5.1.1",
         "uuid": "^13.0.0",
@@ -9903,6 +9905,16 @@
         }
       }
     },
+    "node_modules/next-themes": {
+      "version": "0.4.6",
+      "resolved": "https://registry.npmmirror.com/next-themes/-/next-themes-0.4.6.tgz",
+      "integrity": "sha512-pZvgD5L0IEvX5/9GWyHMf3m8BKiVQwsCMHfoFosXtXBMnaS0ZnIJ9ST4b4NqLVKDEm8QBxoNNGNaBv2JNF6XNA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc"
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.31",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
@@ -11669,6 +11681,16 @@
         "url": "https://github.com/chalk/ansi-styles?sponsor=1"
       }
     },
+    "node_modules/sonner": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmmirror.com/sonner/-/sonner-2.0.7.tgz",
+      "integrity": "sha512-W6ZN4p58k8aDKA4XPcx2hpIQXBRAgyiWVkYhT7CvK6D3iAu7xjvVyhQHg2/iaKJZ1XVJ4r7XuwGL+WGEK37i9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+        "react-dom": "^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+      }
+    },
     "node_modules/source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
diff --git a/package.json b/package.json
index 964ca86..d02faf4 100644
--- a/package.json
+++ b/package.json
@@ -29,10 +29,12 @@
     "lodash": "^4.17.23",
     "lucide-react": "^0.577.0",
     "next": "^16.1.5",
+    "next-themes": "^0.4.6",
     "radix-ui": "^1.4.3",
     "react": "18.3.1",
     "react-chartjs-2": "^5.3.1",
     "react-dom": "18.3.1",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^3.5.0",
     "tesseract.js": "^5.1.1",
     "uuid": "^13.0.0",
