diff --git a/App.tsx b/App.tsx
index d10e764..c1d4926 100644
--- a/App.tsx
+++ b/App.tsx
@@ -121,7 +121,8 @@ const App: React.FC = () => {
     const [isProcessing, setIsProcessing] = useState(false);
     const [editingTransaction, setEditingTransaction] = useState<Transaction | null>(null);
     const [isEditingFromChat, setIsEditingFromChat] = useState(false);
-    const [inputMode, setInputMode] = useState<'voice' | 'keyboard'>('voice');
+    const [inputMode, setInputMode] = useState<'voice' | 'keyboard'>('keyboard');
+    const [isVoiceServiceAvailable, setIsVoiceServiceAvailable] = useState(true);
     const [token, setToken] = useState<string | null>(null);
     const [userInfo, setUserInfo] = useState<any>(null);
 
@@ -151,6 +152,12 @@ const App: React.FC = () => {
     useEffect(() => {
         console.log('当前URL:', window.location.href);
         
+        // 检查浏览器是否支持语音识别
+        const SpeechRecognition = (window as any).SpeechRecognition || (window as any).webkitSpeechRecognition;
+        if (!SpeechRecognition) {
+            setIsVoiceServiceAvailable(false);
+        }
+
         // 检查是否存在token，如果不存在则调用登录接口
         checkAndLogin().then((userInfo) => {
             // 登录成功后加载数据
@@ -264,33 +271,46 @@ const App: React.FC = () => {
                     relatedTransactionId: msg.transaction_id || msg.relatedTransactionId
                 }));
                 // 更新本地缓存
-                setMessages(messagesFromDB);
+                setMessages(prev => {
+                    // 如果已经有消息了（比如调试消息），保留它们并合并
+                    const existingDebugMessages = prev.filter(m => m.id.startsWith('debug-'));
+                    return [...messagesFromDB, ...existingDebugMessages];
+                });
                 console.log('消息列表已从数据库加载:', messagesFromDB.length);
             } else {
                 // 如果数据库中没有消息，显示初始欢迎消息
                 const aiName = aiSettings.name;
-                setMessages([{
-                    id: 'init',
-                    role: 'assistant',
-                    content: `我是${aiName}。✨\n想记账？快说！🎤`,
-                    timestamp: Date.now()
-                }]);
+                setMessages(prev => {
+                    const existingDebugMessages = prev.filter(m => m.id.startsWith('debug-'));
+                    return [{
+                        id: 'init',
+                        role: 'assistant',
+                        content: `我是${aiName}。✨\n想记账？快说！🎤`,
+                        timestamp: Date.now()
+                    }, ...existingDebugMessages];
+                });
             }
         } catch (error) {
             console.error('加载消息列表失败:', error);
             // 失败时尝试从本地存储加载
             const storedMessages = localStorage.getItem('cui_messages');
             if (storedMessages) {
-                setMessages(JSON.parse(storedMessages));
+                setMessages(prev => {
+                    const existingDebugMessages = prev.filter(m => m.id.startsWith('debug-'));
+                    return [...JSON.parse(storedMessages), ...existingDebugMessages];
+                });
             } else {
                 // 显示初始欢迎消息
                 const aiName = aiSettings.name;
-                setMessages([{
-                    id: 'init',
-                    role: 'assistant',
-                    content: `我是${aiName}。✨\n想记账？快说！🎤`,
-                    timestamp: Date.now()
-                }]);
+                setMessages(prev => {
+                    const existingDebugMessages = prev.filter(m => m.id.startsWith('debug-'));
+                    return [{
+                        id: 'init',
+                        role: 'assistant',
+                        content: `我是${aiName}。✨\n想记账？快说！🎤`,
+                        timestamp: Date.now()
+                    }, ...existingDebugMessages];
+                });
             }
         }
 
@@ -482,6 +502,11 @@ const App: React.FC = () => {
         }
     };
 
+    const handleDebugLog = React.useCallback((content: string) => {
+        // 调试信息仅打印到控制台，不再添加到消息列表
+        console.log(`🔧 [调试信息] ${content}`);
+    }, []);
+
     const handleSendMessage = React.useCallback(async (text: string, imageBase64?: string, mimeType?: string) => {
         if (!text.trim() && !imageBase64) return;
 
@@ -799,7 +824,10 @@ const App: React.FC = () => {
                     <div className="absolute bottom-20 left-0 right-0 p-4 bg-gradient-to-t from-gray-100 via-gray-100 to-transparent z-40">
                         <div className="max-w-4xl mx-auto flex flex-col gap-3">
                             <div className="flex items-center gap-3">
-                                <button onClick={() => setInputMode(inputMode === 'voice' ? 'keyboard' : 'voice')} className="p-3 bg-white text-gray-400 rounded-full shadow-lg hover:bg-gray-50 transition-all active:scale-90">
+                                <button 
+                                    onClick={() => setInputMode(inputMode === 'voice' ? 'keyboard' : 'voice')} 
+                                    className="p-3 bg-white text-gray-400 rounded-full shadow-lg hover:bg-gray-50 transition-all active:scale-90"
+                                >
                                     {inputMode === 'voice' ? (
                                         <svg className="w-6 h-6" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" /></svg>
                                     ) : (
@@ -815,7 +843,14 @@ const App: React.FC = () => {
                                         )}
                                     </div>
                                 ) : (
-                                    <VoiceInput onTranscript={(text) => handleSendMessage(text)} isProcessing={isProcessing} isFullWidth />
+                                    <VoiceInput 
+                                        onTranscript={(text) => handleSendMessage(text)} 
+                                        isProcessing={isProcessing} 
+                                        isFullWidth 
+                                        onDebug={handleDebugLog}
+                                        onAvailabilityChange={(isAvailable) => setIsVoiceServiceAvailable(isAvailable)}
+                                        isServiceAvailable={isVoiceServiceAvailable}
+                                    />
                                 )}
 
                                 <input type="file" accept="image/*" className="hidden" ref={fileInputRef} onChange={handleFileUpload} />
diff --git a/components/VoiceInput.tsx b/components/VoiceInput.tsx
index da3aa65..6c3a823 100644
--- a/components/VoiceInput.tsx
+++ b/components/VoiceInput.tsx
@@ -1,47 +1,74 @@
-import React, { useState, useEffect, useRef } from 'react';
+import React, { useState, useEffect, useRef, useCallback } from 'react';
 
 interface VoiceInputProps {
   onTranscript: (text: string) => void;
   isProcessing: boolean;
   isFullWidth?: boolean;
+  onDebug?: (message: string) => void;
+  onAvailabilityChange?: (isAvailable: boolean) => void;
+  isServiceAvailable?: boolean;
 }
 
-const VoiceInput: React.FC<VoiceInputProps> = ({ onTranscript, isProcessing, isFullWidth = false }) => {
-  const [isListening, setIsListening] = useState(false);
+const VoiceInput: React.FC<VoiceInputProps> = ({ 
+  onTranscript, 
+  isProcessing, 
+  isFullWidth = false, 
+  onDebug,
+  onAvailabilityChange,
+  isServiceAvailable = true
+}) => {
+  const [voiceState, setVoiceState] = useState<'idle' | 'starting' | 'listening'>('idle');
+  const [isInternalDenied, setIsInternalDenied] = useState(false);
+  
+  const isServiceDenied = !isServiceAvailable || isInternalDenied;
   const recognitionRef = useRef<any>(null);
-  const isStartingRef = useRef(false);
-  const onTranscriptRef = useRef(onTranscript);
+  const isHoldingRef = useRef(false);
+  const startTimestampRef = useRef(0);
+  const startTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+  const lastEventTimeRef = useRef(0);
+  const activeEventRef = useRef<'pointer' | 'touch' | null>(null);
 
-  // 始终保持 ref 为最新，避免在 useEffect 中依赖 onTranscript 导致重复初始化
+  const onTranscriptRef = useRef(onTranscript);
   useEffect(() => {
     onTranscriptRef.current = onTranscript;
   }, [onTranscript]);
 
-  const initRecognition = () => {
-    if (!('SpeechRecognition' in window || 'webkitSpeechRecognition' in window)) return;
+  // 初始化语音识别实例
+  const initRecognition = useCallback(() => {
+    if (typeof window === 'undefined') return null;
     
-    // 如果已有实例，先清理
+    const SpeechRecognition = (window as any).SpeechRecognition || (window as any).webkitSpeechRecognition;
+    if (!SpeechRecognition) {
+      onAvailabilityChange?.(false);
+      return null;
+    }
+
+    // 彻底清理并销毁旧实例，这是 iOS 修复 service-not-allowed 的关键
     if (recognitionRef.current) {
       try {
+        recognitionRef.current.onstart = null;
+        recognitionRef.current.onend = null;
+        recognitionRef.current.onerror = null;
+        recognitionRef.current.onresult = null;
         recognitionRef.current.abort();
       } catch (e) {}
     }
 
-    const SpeechRecognition = (window as any).SpeechRecognition || (window as any).webkitSpeechRecognition;
     const recognition = new SpeechRecognition();
-    
-    recognition.continuous = true;
-    recognition.lang = 'zh-CN';
+    recognition.continuous = false;
+    // 针对 iOS 优化语言标识符
+    recognition.lang = 'zh-Hans-CN';
     recognition.interimResults = true;
 
     recognition.onstart = () => {
-      setIsListening(true);
-      isStartingRef.current = false;
-      console.log('Speech recognition started');
+      if (startTimeoutRef.current) clearTimeout(startTimeoutRef.current);
+      setVoiceState('listening');
+      onDebug?.('DEBUG: recognition.onstart 触发');
     };
 
     recognition.onresult = (event: any) => {
       const results = event.results;
+      onDebug?.(`DEBUG: recognition.onresult 触发, isFinal: ${results[event.resultIndex]?.isFinal}`);
       for (let i = event.resultIndex; i < results.length; i++) {
         if (results[i].isFinal) {
           const transcript = results[i][0].transcript;
@@ -51,55 +78,54 @@ const VoiceInput: React.FC<VoiceInputProps> = ({ onTranscript, isProcessing, isF
     };
 
     recognition.onerror = async (event: any) => {
-      console.error('Speech recognition error', event.error);
+      if (startTimeoutRef.current) clearTimeout(startTimeoutRef.current);
+      const errorType = event.error;
+      onDebug?.(`DEBUG: recognition.onerror 触发, error: ${errorType}`);
       
-      let message = '';
-      switch (event.error) {
-        case 'network':
-          message = "语音识别网络连接失败。请检查网络或尝试切换浏览器（推荐 Chrome/Edge）。";
-          break;
-        case 'not-allowed':
-        case 'service-not-allowed':
-          // 移动端初次授权时可能触发 race condition：用户点击“允许”但 start() 已超时失败
-          // 此时我们通过 getUserMedia 探测真实权限状态
+      setVoiceState('idle');
+      isHoldingRef.current = false;
+      activeEventRef.current = null;
+
+      if (errorType === 'service-not-allowed' || errorType === 'not-allowed') {
+        setIsInternalDenied(true);
+        onAvailabilityChange?.(false);
+
+        if (errorType === 'service-not-allowed') {
+          const isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
+          if (isIOS) {
+            alert("语音识别服务不可用。\n\n解决办法：\n1. 确保您的 iPhone 已开启“听写”功能（设置 -> 通用 -> 键盘 -> 启用听写）\n2. 确保您的 Siri 已开启\n3. 检查网络连接是否正常。");
+          } else {
+            alert("语音识别服务被拒绝，请稍后重试。");
+          }
+        } else {
+          // not-allowed 处理
+          onDebug?.(`DEBUG: 检测到错误 not-allowed，尝试探测麦克风硬件...`);
           try {
             const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
-            // 如果能获取到流，说明权限其实是有的，只是刚才 start() 冲突了
             stream.getTracks().forEach(t => t.stop());
-            console.log('Permission probe successful, refreshing recognition instance...');
-            isStartingRef.current = false;
-            setIsListening(false);
-            initRecognition(); // 静默重置实例
-            return; // 不弹窗，用户再次点击就会成功
-          } catch (e) {
-            // 探测也失败，说明是真的被拒绝了
-            message = "麦克风访问被拒绝。\n\n解决办法：\n1. 点击地址栏左侧的“锁”或“设置”图标\n2. 找到“麦克风”并设为“允许”\n3. 刷新页面后重试";
+            onDebug?.('DEBUG: 麦克风硬件探测成功');
+            alert("麦克风访问被拒绝。\n\n请在浏览器设置中允许麦克风权限后重试。");
+          } catch (e: any) {
+            onDebug?.(`DEBUG: 麦克风硬件探测失败: ${e.message || e.name}`);
+            alert("麦克风访问被拒绝，且硬件探测失败。\n\n请检查设备设置并确保浏览器拥有麦克风权限。");
           }
-          break;
-        case 'no-speech':
-          return;
-        case 'aborted':
-          return;
-        default:
-          break;
+        }
       }
-      
-      if (message) alert(message);
-      
-      setIsListening(false);
-      isStartingRef.current = false;
-      // 出错后重新初始化，确保下次点击可用
-      initRecognition();
     };
 
     recognition.onend = () => {
-      console.log('Speech recognition ended');
-      setIsListening(false);
-      isStartingRef.current = false;
+      if (startTimeoutRef.current) clearTimeout(startTimeoutRef.current);
+      setVoiceState('idle');
+      onDebug?.('DEBUG: recognition.onend 触发');
+      if (isHoldingRef.current) {
+        isHoldingRef.current = false;
+        activeEventRef.current = null;
+      }
     };
 
     recognitionRef.current = recognition;
-  };
+    return recognition;
+  }, [onDebug]);
 
   useEffect(() => {
     initRecognition();
@@ -110,99 +136,188 @@ const VoiceInput: React.FC<VoiceInputProps> = ({ onTranscript, isProcessing, isF
         } catch (e) {}
       }
     };
-  }, []);
+  }, [initRecognition]);
 
-  const startListening = (e: React.PointerEvent) => {
-    e.stopPropagation();
-    if (e.cancelable) e.preventDefault();
+  const stopListening = useCallback((e: React.PointerEvent | React.TouchEvent | React.MouseEvent) => {
+    const eventType = e.type.startsWith('touch') ? 'touch' : 'pointer';
+    onDebug?.(`DEBUG: stopListening 触发, event: ${e.type}, state: ${voiceState}, isHolding: ${isHoldingRef.current}`);
     
-    // 如果已经在处理中、正在监听或正在启动，则忽略
-    if (isProcessing || isListening || isStartingRef.current) return;
-
-    // 获取指针捕获，确保即使手指移出按钮范围也能触发 onPointerUp
-    try {
-      (e.currentTarget as HTMLElement).setPointerCapture(e.pointerId);
-    } catch (err) {
-      console.warn("Failed to set pointer capture", err);
+    // 如果不是当前激活的事件类型，忽略（除非已经没有激活类型了）
+    if (activeEventRef.current && activeEventRef.current !== eventType) {
+      return;
     }
 
-    if (recognitionRef.current) {
-      // 检查是否为安全上下文 (HTTPS 或 localhost)
-      if (!window.isSecureContext) {
-        alert("语音识别失败：浏览器限制在非 HTTPS 环境下使用麦克风。请确保使用 HTTPS 访问，或在 PC 端 Chrome 的 'Insecure origins treated as secure' 中设置白名单。");
-        return;
-      }
+    isHoldingRef.current = false;
+    activeEventRef.current = null;
+    
+    if (startTimeoutRef.current) {
+      clearTimeout(startTimeoutRef.current);
+      startTimeoutRef.current = null;
+    }
 
+    // 处理极短时间的点击，防止闪现
+    const duration = Date.now() - startTimestampRef.current;
+    if (duration < 300) {
+      // 如果点击时间太短，稍微延迟停止，或者直接停止
+      setTimeout(() => {
+        try { recognitionRef.current?.stop(); } catch (e) {}
+      }, 300 - duration);
+    } else {
+      try { recognitionRef.current?.stop(); } catch (e) {}
+    }
+  }, [voiceState, onDebug]);
+
+  const startListening = useCallback((e: React.PointerEvent | React.TouchEvent | React.MouseEvent) => {
+    if (e.cancelable) e.preventDefault();
+    e.stopPropagation();
+
+    const eventType = e.type.startsWith('touch') ? 'touch' : 'pointer';
+    onDebug?.(`DEBUG: startListening 触发, type: ${e.type}, currentActive: ${activeEventRef.current}`);
+
+    if (activeEventRef.current && activeEventRef.current !== eventType) {
+      onDebug?.(`DEBUG: 忽略冲突事件类型: ${eventType}`);
+      return;
+    }
+
+    const now = Date.now();
+    if (now - lastEventTimeRef.current < 400) return; // 略微增加防抖
+    lastEventTimeRef.current = now;
+    
+    if (isProcessing || voiceState !== 'idle' || isHoldingRef.current || isServiceDenied) return;
+
+    activeEventRef.current = eventType;
+    isHoldingRef.current = true;
+    startTimestampRef.current = now;
+
+    if ('vibrate' in navigator) {
+      try { navigator.vibrate(20); } catch (e) {}
+    }
+
+    if (!window.isSecureContext) {
+      alert("语音识别失败：请使用 HTTPS 协议访问以开启麦克风权限。");
+      isHoldingRef.current = false;
+      activeEventRef.current = null;
+      return;
+    }
+
+    // 核心修复：针对 iOS，每次点击都强制获取一个全新的实例
+    onDebug?.('DEBUG: 正在获取全新识别实例...');
+    const recognition = initRecognition();
+
+    if (recognition) {
       try {
-        isStartingRef.current = true;
-        recognitionRef.current.start();
-        // UI 状态会在 onstart 回调中更新，以保证真实感
-      } catch (err) {
-        console.error("Failed to start recognition", err);
-        isStartingRef.current = false;
-        setIsListening(false);
+        // 指针捕获
+        if ('pointerId' in e && (e.currentTarget as any).setPointerCapture) {
+          try { (e.currentTarget as any).setPointerCapture(e.pointerId); } catch (err) {}
+        }
+
+        setVoiceState('starting');
+        
+        // 核心修复：针对 iOS 增加 100ms 软启动延迟，避免手势冲突
+        setTimeout(() => {
+          if (isHoldingRef.current) {
+            onDebug?.('DEBUG: 延时结束，调用 recognition.start()');
+            try {
+              recognition.start();
+            } catch (err: any) {
+              onDebug?.(`DEBUG: 异步 start 失败: ${err.message || err}`);
+              setVoiceState('idle');
+              isHoldingRef.current = false;
+              activeEventRef.current = null;
+            }
+          }
+        }, 100);
+
+        startTimeoutRef.current = setTimeout(() => {
+          if (isHoldingRef.current && voiceState === 'starting') {
+            onDebug?.("DEBUG: 启动超时保护触发");
+            stopListening(e);
+          }
+        }, 5000);
+      } catch (err: any) {
+        onDebug?.(`DEBUG: recognition.start 抛出异常: ${err.message || err}`);
+        setVoiceState('idle');
+        isHoldingRef.current = false;
+        activeEventRef.current = null;
       }
     } else {
-      if (!window.isSecureContext) {
-        alert("浏览器不支持语音识别：当前环境不是安全上下文 (HTTPS)。");
-      } else {
-        alert("您的浏览器不支持语音识别，请使用 Chrome 或 Edge。");
-      }
+      alert("您的浏览器不支持语音识别，请尝试使用 Chrome 或 Edge。");
+      isHoldingRef.current = false;
+      activeEventRef.current = null;
     }
-  };
+  }, [isProcessing, voiceState, initRecognition, onDebug, stopListening]);
 
-  const stopListening = (e: React.PointerEvent) => {
-    e.stopPropagation();
-    
-    // 只有在正在运行或正在启动时才尝试停止
-    if (isListening || isStartingRef.current) {
-      try {
-        recognitionRef.current?.stop();
-      } catch (err) {
-        console.error("Failed to stop recognition", err);
-        // 发生错误时强制重置本地状态
-        setIsListening(false);
-        isStartingRef.current = false;
-      }
+  // 处理指针/触摸离开或取消的情况
+  const handleCancel = useCallback((e: any) => {
+    onDebug?.(`DEBUG: handleCancel 触发, event: ${e.type}, isHolding: ${isHoldingRef.current}`);
+    if (isHoldingRef.current) {
+      stopListening(e);
     }
-  };
+  }, [stopListening, onDebug]);
 
   return (
     <div className={`${isFullWidth ? 'w-full' : ''} relative select-none touch-none`}>
       <button
         onPointerDown={startListening}
         onPointerUp={stopListening}
-        onPointerCancel={stopListening}
-        onClick={(e) => e.preventDefault()}
+        onPointerCancel={handleCancel}
+        
+        // 兼容性备选
+        onTouchStart={startListening}
+        onTouchEnd={stopListening}
+        onTouchCancel={handleCancel}
+
+        // 禁用右键菜单，防止长按弹出
         onContextMenu={(e) => e.preventDefault()}
-        disabled={isProcessing}
-        style={{ WebkitTouchCallout: 'none' }}
-        className={`relative flex items-center justify-center transition-all duration-300 active:scale-95 shadow-lg ${
+        
+        disabled={isProcessing || isServiceDenied}
+        className={`relative flex items-center justify-center transition-all duration-300 shadow-lg ${
           isFullWidth 
             ? 'w-full py-4 rounded-2xl font-bold text-sm tracking-widest' 
             : 'w-14 h-14 rounded-full'
         } ${
-          isListening
+          voiceState === 'listening'
             ? 'bg-rose-500 text-white shadow-rose-200 scale-105'
+            : voiceState === 'starting'
+            ? 'bg-amber-500 text-white shadow-amber-100 scale-102'
+            : isServiceDenied
+            ? 'bg-gray-300 text-gray-500 cursor-not-allowed shadow-none pointer-events-none'
             : 'bg-indigo-600 text-white shadow-indigo-100'
         } ${isProcessing ? 'opacity-50 grayscale cursor-not-allowed' : ''}`}
+        style={{ 
+          WebkitTouchCallout: 'none',
+          WebkitTapHighlightColor: 'transparent',
+          userSelect: 'none',
+          WebkitUserSelect: 'none',
+          touchAction: 'none'
+        }}
       >
-        {isListening && (
-          <div className="absolute inset-0 rounded-2xl animate-ping bg-rose-400 opacity-20"></div>
+        {(voiceState === 'listening' || voiceState === 'starting') && (
+          <div className={`absolute inset-0 rounded-2xl animate-ping ${voiceState === 'listening' ? 'bg-rose-400' : 'bg-amber-400'} opacity-20`}></div>
         )}
         
         <div className="flex items-center gap-2 z-10">
           <svg xmlns="http://www.w3.org/2000/svg" className={`${isFullWidth ? 'h-5 w-5' : 'h-6 w-6'}`} fill="none" viewBox="0 0 24 24" stroke="currentColor">
             <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2.5} d="M19 11a7 7 0 01-7 7m0 0a7 7 0 01-7-7m7 7v4m0 0H8m4 0h4m-4-8a3 3 0 01-3-3V5a3 3 0 116 0v6a3 3 0 01-3 3z" />
           </svg>
-          {isFullWidth && <span>{isListening ? '松开 结束' : '按住 说话'}</span>}
+          {isFullWidth && (
+            <span>
+              {isServiceDenied 
+                ? '语音不可用' 
+                : voiceState === 'listening' 
+                ? '松开 结束' 
+                : voiceState === 'starting' 
+                ? '正在连接...' 
+                : '按住 说话'}
+            </span>
+          )}
         </div>
       </button>
       
-      {isListening && isFullWidth && (
+      {voiceState !== 'idle' && !isServiceDenied && isFullWidth && (
         <div className="absolute -top-16 left-0 right-0 flex justify-center animate-bounce">
-          <div className="bg-rose-500 text-white px-4 py-2 rounded-full text-xs font-bold shadow-xl border-2 border-white">
-            正在录音...
+          <div className={`${voiceState === 'listening' ? 'bg-rose-500' : 'bg-amber-500'} text-white px-4 py-2 rounded-full text-xs font-bold shadow-xl border-2 border-white`}>
+            {voiceState === 'listening' ? '正在录音...' : '准备录音...'}
           </div>
         </div>
       )}