diff --git a/tests/audit-logs.spec.ts b/tests/audit-logs.spec.ts
index 51d9b37..7bcf1ee 100644
--- a/tests/audit-logs.spec.ts
+++ b/tests/audit-logs.spec.ts
@@ -254,4 +254,25 @@ test.describe('审计日志页面', () => {
     expect(auditRequests).toHaveLength(0)
     await captureScreenshot(page, testInfo, '03-audit-route-forbidden')
   })
+
+  test('当前筛选没有数据时提示不可导出且不请求导出接口', async ({ page }, testInfo) => {
+    const { auditRequests, exportRequests } = await mockPlatform(page, {
+      permissions: ['ai.overview.view', 'system.audit', 'system.audit.export'],
+      includeAuditMenu: true,
+    })
+    let downloadCount = 0
+    page.on('download', () => { downloadCount += 1 })
+
+    await page.goto('/settings/audit')
+    await page.getByTestId('audit-filter-keyword').fill('no-matching-audit-record')
+    await page.getByTestId('audit-search').click()
+    await expect.poll(() => auditRequests.at(-1)?.keyword).toBe('no-matching-audit-record')
+    await expect(page.getByText('暂无符合当前条件的审计日志', { exact: true })).toBeVisible()
+
+    await page.getByTestId('audit-export').click()
+    await expect(page.getByText('暂无符合当前条件的审计日志，不可导出', { exact: true })).toBeVisible()
+    expect(exportRequests).toHaveLength(0)
+    expect(downloadCount).toBe(0)
+    await captureScreenshot(page, testInfo, '04-audit-empty-export-blocked')
+  })
 })
diff --git a/tests/auth-navigation.spec.ts b/tests/auth-navigation.spec.ts
index aca13a5..e90b550 100644
--- a/tests/auth-navigation.spec.ts
+++ b/tests/auth-navigation.spec.ts
@@ -18,7 +18,7 @@ test('登录页按行政、教员、学员、管理员展示真实身份控件',
   await expect(page.locator('.login-role-options > button')).toHaveCount(4)
   expect((await page.locator('.login-role-options > button').allTextContents()).map((item) => item.trim()))
     .toEqual(roleCases.map((item) => item.label))
-  await expect(page.getByRole('button', { name: /登录系统/ })).toBeDisabled()
+  await expect(page.getByRole('button', { name: '登录', exact: true })).toBeDisabled()
   await expect(page.getByText('管理员输入账号登录，其他身份请选择对应账号后输入密码。')).toBeVisible()
 
   for (const role of roleCases) {
@@ -47,14 +47,57 @@ test('登录页按行政、教员、学员、管理员展示真实身份控件',
   await expect(passwordToggle).toHaveCount(1)
   await expect(passwordToggle.locator('svg')).toHaveCount(1)
   await expect(password).toHaveAttribute('type', 'password')
+  await expect(page.getByTestId('password-hidden-icon')).toBeVisible()
+  await expect(page.getByTestId('password-visible-icon')).toHaveCount(0)
   await page.getByRole('button', { name: '显示密码' }).click()
   await expect(password).toHaveAttribute('type', 'text')
+  await expect(page.getByTestId('password-visible-icon')).toBeVisible()
+  await expect(page.getByTestId('password-hidden-icon')).toHaveCount(0)
   await page.getByRole('button', { name: '隐藏密码' }).click()
   await expect(password).toHaveAttribute('type', 'password')
+  await expect(page.getByTestId('password-hidden-icon')).toBeVisible()
 
   await captureScreenshot(page, testInfo, 'login-four-identities')
 })
 
+test('深色主题下浏览器自动填充保持深色输入样式', async ({ page }, testInfo) => {
+  await page.addInitScript(() => {
+    window.localStorage.setItem('digital-human-theme', 'dark')
+  })
+  await page.goto('/login')
+  await expect(page.locator('.login-shell')).toHaveAttribute('data-theme', 'dark')
+
+  const username = page.locator('input[name="username"]')
+  await username.fill('saved-admin-preview')
+  const client = await page.context().newCDPSession(page)
+  await client.send('DOM.enable')
+  await client.send('CSS.enable')
+  const documentNode = await client.send('DOM.getDocument')
+  const usernameNode = await client.send('DOM.querySelector', {
+    nodeId: documentNode.root.nodeId,
+    selector: 'input[name="username"]',
+  })
+  await client.send('CSS.forcePseudoState', {
+    nodeId: usernameNode.nodeId,
+    forcedPseudoClasses: ['autofill'],
+  })
+
+  const autofillStyle = await username.evaluate((element) => {
+    const style = window.getComputedStyle(element)
+    return {
+      background: style.getPropertyValue('--login-autofill-background').trim(),
+      boxShadow: style.webkitBoxShadow,
+      textFill: style.webkitTextFillColor,
+    }
+  })
+  expect(autofillStyle.background).toBe('rgb(9 42 34 / 96%)')
+  expect(autofillStyle.textFill).toBe('rgb(223, 244, 238)')
+  expect(autofillStyle.boxShadow).toContain('9, 42, 34')
+
+  await username.fill('')
+  await captureScreenshot(page, testInfo, 'login-dark-autofill-theme')
+})
+
 test('错误密码被拒绝且不会建立登录会话', async ({ page }, testInfo) => {
   const credentials = readAdminCredentials()
   await page.goto('/login')