diff --git a/package.json b/package.json
index 5692d7d..3b5a265 100644
--- a/package.json
+++ b/package.json
@@ -79,6 +79,7 @@
     "playwright": "^1.61.1",
     "prettier": "^3.4.2",
     "tailwindcss": "^4.1.17",
+    "tw-animate-css": "^1.4.0",
     "typescript": "^7.0.0",
     "vite": "^7.0.0",
     "vitest": "^4.1.9"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 09e331c..a164bf8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -192,6 +192,9 @@ importers:
       tailwindcss:
         specifier: ^4.1.17
         version: 4.3.3
+      tw-animate-css:
+        specifier: ^1.4.0
+        version: 1.4.0
       typescript:
         specifier: ^7.0.0
         version: 7.0.2
@@ -3856,6 +3859,9 @@ packages:
   tslib@2.8.1:
     resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
 
+  tw-animate-css@1.4.0:
+    resolution: {integrity: sha512-7bziOlRqH0hJx80h/3mbicLW7o8qLsH5+RaLR2t+OHM3D0JlWGODQKQ4cxbK7WlvmUxpcj6Kgu6EKqjrGFe3QQ==}
+
   type-check@0.4.0:
     resolution: {integrity: sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==}
     engines: {node: '>= 0.8.0'}
@@ -8102,6 +8108,8 @@ snapshots:
 
   tslib@2.8.1: {}
 
+  tw-animate-css@1.4.0: {}
+
   type-check@0.4.0:
     dependencies:
       prelude-ls: 1.2.1
diff --git a/src/app/app.e2e.ts b/src/app/app.e2e.ts
index 889d77a..e8fd3c9 100644
--- a/src/app/app.e2e.ts
+++ b/src/app/app.e2e.ts
@@ -31,3 +31,39 @@ test("renders the migrated WebGIS workbench shell", async ({ page }) => {
   });
   await expect.poll(() => riveRequests.length, { timeout: 25_000 }).toBe(1);
 });
+
+test("animates the compact header menu without overflowing", async ({ page }) => {
+  await page.emulateMedia({ reducedMotion: "no-preference" });
+  await page.setViewportSize({ width: 375, height: 812 });
+  await page.goto("/");
+
+  await page.locator('button[aria-label^="查看异常处置面板"]:visible').click();
+
+  const menu = page.locator('[role="menu"][data-state="open"]');
+  await expect(menu).toBeVisible();
+
+  const animation = await menu.evaluate((element) => {
+    const style = window.getComputedStyle(element);
+    return {
+      duration: Number.parseFloat(style.animationDuration) * 1_000,
+      name: style.animationName
+    };
+  });
+  expect(animation.name).toContain("enter");
+  expect(animation.duration).toBeGreaterThan(0);
+
+  const menuBounds = await menu.boundingBox();
+  expect(menuBounds).not.toBeNull();
+  expect(menuBounds!.x).toBeGreaterThanOrEqual(0);
+  expect(menuBounds!.x + menuBounds!.width).toBeLessThanOrEqual(375);
+});
+
+test("renders map notices through a single toaster", async ({ page }) => {
+  await page.goto("/");
+
+  await expect(page.locator("[data-sonner-toaster]")).toHaveCount(1);
+  await page.getByLabel("打开用户菜单").click();
+  await page.getByRole("menuitem", { name: /查看运行状态/ }).click();
+
+  await expect(page.locator("[data-sonner-toast]")).toHaveCount(1);
+});
diff --git a/src/app/providers.tsx b/src/app/providers.tsx
index a146b7c..8adef62 100644
--- a/src/app/providers.tsx
+++ b/src/app/providers.tsx
@@ -1,5 +1,4 @@
 import type { PropsWithChildren } from "react";
-import { Toaster } from "sonner";
 import { SWRConfig } from "swr";
 
 async function fetcher<T>(url: string): Promise<T> {
@@ -18,7 +17,6 @@ export function AppProviders({ children }: PropsWithChildren) {
       }}
     >
       {children}
-      <Toaster richColors position="top-right" />
     </SWRConfig>
   );
 }
diff --git a/src/styles.css b/src/styles.css
index d690cec..36285fb 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -1,7 +1,61 @@
 @import "tailwindcss";
+@import "tw-animate-css";
 @source "../node_modules/streamdown/dist";
 @source "../node_modules/@streamdown/*/dist";
 
+@custom-variant dark (&:where(.dark, .dark *));
+
+@theme inline {
+  --color-background: hsl(var(--background));
+  --color-foreground: hsl(var(--foreground));
+  --color-card: hsl(var(--card));
+  --color-card-foreground: hsl(var(--card-foreground));
+  --color-popover: hsl(var(--popover));
+  --color-popover-foreground: hsl(var(--popover-foreground));
+  --color-primary: hsl(var(--primary));
+  --color-primary-foreground: hsl(var(--primary-foreground));
+  --color-secondary: hsl(var(--secondary));
+  --color-secondary-foreground: hsl(var(--secondary-foreground));
+  --color-muted: hsl(var(--muted));
+  --color-muted-foreground: hsl(var(--muted-foreground));
+  --color-accent: hsl(var(--accent));
+  --color-accent-foreground: hsl(var(--accent-foreground));
+  --color-destructive: hsl(var(--destructive));
+  --color-destructive-foreground: hsl(var(--destructive-foreground));
+  --color-border: hsl(var(--border));
+  --color-input: hsl(var(--input));
+  --color-ring: hsl(var(--ring));
+  --radius-lg: var(--radius);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-sm: calc(var(--radius) - 4px);
+  --shadow-glass: 0 18px 50px rgba(10, 18, 32, 0.18);
+}
+
+@theme {
+  --animate-accordion-down: accordion-down 0.2s ease-out;
+  --animate-accordion-up: accordion-up 0.2s ease-out;
+
+  @keyframes accordion-down {
+    from {
+      height: 0;
+    }
+
+    to {
+      height: var(--radix-accordion-content-height);
+    }
+  }
+
+  @keyframes accordion-up {
+    from {
+      height: var(--radix-accordion-content-height);
+    }
+
+    to {
+      height: 0;
+    }
+  }
+}
+
 :root {
   color-scheme: light;
   background: oklch(94.5% 0.012 250);