添加静音按钮，默认静音，设置保存到本地存储，图标灰度显示

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.css

@@ -185,11 +185,20 @@
   }
 }
 
-/* Settings button */
-.settings-button {
+/* Top buttons group */
+.top-buttons {
   position: absolute;
   top: 20px;
   left: 20px;
+  display: flex;
+  flex-direction: row;
+  gap: 8px;
+  z-index: 1000;
+}
+
+/* Settings button */
+.settings-button {
+  position: static;
   width: 40px;
   height: 40px;
   padding: 8px;
@@ -209,6 +218,26 @@
   background-color: rgba(255, 255, 255, 0.15);
 }
 
+.mute-button {
+  width: 40px;
+  height: 40px;
+  padding: 8px;
+  font-size: 20px;
+  background-color: rgba(255, 255, 255, 0.05);
+  border: none;
+  border-radius: 8px;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  filter: grayscale(100%);
+}
+
+.mute-button:hover {
+  background-color: rgba(255, 255, 255, 0.15);
+}
+
 /* Settings overlay */
 .settings-overlay {
   position: fixed;

src/App.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react'
+import { useState, useEffect, useRef } from 'react'
 import { FlipClock } from './components/FlipClock'
 import { RollClock } from './components/RollClock'
 import './App.css'
@@ -109,6 +109,11 @@ function App() {
     return saved === 'up' ? 'up' : 'down'
   })
   const [showSettings, setShowSettings] = useState(false)
+  const [isMuted, setIsMuted] = useState(() => {
+    const saved = localStorage.getItem('clock-isMuted')
+    return saved === null ? true : saved === 'true'
+  })
+  const isMutedRef = useRef(isMuted)
   const [showDate, setShowDate] = useState(() => {
     // 从 localStorage 读取，默认显示日期 (true)
     const saved = localStorage.getItem('clock-showDate')
@@ -147,6 +152,13 @@ function App() {
     localStorage.setItem('clock-showDate', String(newValue))
   }
 
+  const toggleMute = () => {
+    const newValue = !isMuted
+    setIsMuted(newValue)
+    isMutedRef.current = newValue
+    localStorage.setItem('clock-isMuted', String(newValue))
+  }
+
   // 切换显示时区时保存到 localStorage
   const toggleShowTimezone = () => {
     const newValue = !showTimezone
@@ -155,8 +167,13 @@ function App() {
   }
 
   useEffect(() => {
+    const audio = new Audio('/tick1.mp3')
     const timer = setInterval(() => {
       setTime(new Date())
+      if (!isMutedRef.current) {
+        audio.currentTime = 0
+        audio.play().catch(() => {})
+      }
     }, 1000)
     return () => clearInterval(timer)
   }, [])
@@ -226,13 +243,22 @@ function App() {
 
   return (
     <div className="app">
-      <button
-        className="settings-button"
-        onClick={() => setShowSettings(true)}
-        aria-label="设置"
-      >
-        ⚙️
-      </button>
+      <div className="top-buttons">
+        <button
+          className="settings-button"
+          onClick={() => setShowSettings(true)}
+          aria-label="设置"
+        >
+          ⚙️
+        </button>
+        <button
+          className="mute-button"
+          onClick={toggleMute}
+          aria-label={isMuted ? '取消静音' : '静音'}
+        >
+          {isMuted ? '🔇' : '🔊'}
+        </button>
+      </div>
 
       {showSettings && (
         <div className="settings-overlay" onClick={() => setShowSettings(false)}>