diff --git a/web/src/keys.test.ts b/web/src/keys.test.ts
index ef5f450..14234f5 100644
--- a/web/src/keys.test.ts
+++ b/web/src/keys.test.ts
@@ -1,5 +1,5 @@
 // @vitest-environment happy-dom
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
 import { matchKeys, recordedKeys } from './keys'
 
 describe('快捷键匹配与录入', () => {
@@ -13,4 +13,20 @@ describe('快捷键匹配与录入', () => {
     expect(recordedKeys(new KeyboardEvent('keydown', { key: 'Control', ctrlKey: true }))).toBeNull()
     expect(recordedKeys(new KeyboardEvent('keydown', { key: '+', ctrlKey: true, shiftKey: true }))).toContain('Plus')
   })
+  it.each(['MacIntel', 'Win32'])('%s 录入双修饰键后可跨平台匹配，已有 Mod 组合也不会抛错', async (platform) => {
+    vi.stubGlobal('navigator', { platform })
+    vi.resetModules()
+    try {
+      const keys = await import('./keys')
+      const event = new KeyboardEvent('keydown', { key: 'b', code: 'KeyB', ctrlKey: true, metaKey: true })
+      expect(keys.recordedKeys(event)).toBe('Ctrl+Meta+B')
+      expect(keys.matchKeys(event, 'Ctrl+Meta+B')).toBe(true)
+      const alias = platform === 'MacIntel' ? 'Mod+Meta+B' : 'Mod+Ctrl+B'
+      expect(keys.physicalKeys(alias)).toBe(platform === 'MacIntel' ? 'Meta+B' : 'Ctrl+B')
+      expect(keys.matchKeys(new KeyboardEvent('keydown', { key: 'F1' }), alias)).toBe(false)
+    } finally {
+      vi.unstubAllGlobals()
+      vi.resetModules()
+    }
+  })
 })
diff --git a/web/src/keys.ts b/web/src/keys.ts
index e024237..91e6add 100644
--- a/web/src/keys.ts
+++ b/web/src/keys.ts
@@ -10,7 +10,8 @@ export function normalizeKeys(value: string): string {
 }
 
 export function physicalKeys(value: string): string {
-  return normalizeKeys(value.replace(/\bMod\b/g, isMac ? 'Meta' : 'Ctrl'))
+  const parts = normalizeKeys(value).split('+').map((part) => part === 'Mod' ? isMac ? 'Meta' : 'Ctrl' : part)
+  return normalizeKeys([...new Set(parts)].join('+'))
 }
 
 export function matchKeys(event: KeyboardEvent, value: string): boolean {
@@ -26,8 +27,9 @@ export function matchKeys(event: KeyboardEvent, value: string): boolean {
 export function recordedKeys(event: KeyboardEvent): string | null {
   if (['Control', 'Meta', 'Alt', 'Shift', 'AltGraph', 'Dead', 'Process', 'Unidentified'].includes(event.key) || event.isComposing) return null
   const parts: string[] = []
-  if (event.ctrlKey) parts.push(isMac ? 'Ctrl' : 'Mod')
-  if (event.metaKey) parts.push(isMac ? 'Mod' : 'Meta')
+  // 同时按下两种修饰键时保留物理组合，避免同步后 Mod 与另一键重合。
+  if (event.ctrlKey) parts.push(isMac || event.metaKey ? 'Ctrl' : 'Mod')
+  if (event.metaKey) parts.push(!isMac || event.ctrlKey ? 'Meta' : 'Mod')
   if (event.altKey) parts.push('Alt')
   if (event.shiftKey) parts.push('Shift')
   const key = /^Digit[0-9]$/.test(event.code) ? event.code.slice(5) : event.key === ' ' ? 'Space' : event.key === '+' ? 'Plus' : event.key