diff --git a/app/(tabs)/_layout.tsx b/app/(tabs)/_layout.tsx
index 31aab2f..cca2d01 100644
--- a/app/(tabs)/_layout.tsx
+++ b/app/(tabs)/_layout.tsx
@@ -18,6 +18,7 @@ export default function TabLayout() {
       screenOptions={({ route }) => {
         const routeName = route.name;
         const isSelected = (routeName === 'index' && pathname === '/') ||
+          (routeName === 'coach' && pathname === '/coach') ||
           (routeName === 'explore' && pathname === '/explore') ||
           pathname.includes(routeName);
 
@@ -39,6 +40,8 @@ export default function TabLayout() {
               switch (routeName) {
                 case 'index':
                   return { icon: 'house.fill', title: '首页' } as const;
+                case 'coach':
+                  return { icon: 'person.3.fill', title: '教练' } as const;
                 case 'explore':
                   return { icon: 'paperplane.fill', title: '探索' } as const;
                 case 'personal':
@@ -150,6 +153,34 @@ export default function TabLayout() {
           },
         }}
       />
+      <Tabs.Screen
+        name="coach"
+        options={{
+          title: '教练',
+          tabBarIcon: ({ color }) => {
+            const isCoachSelected = pathname === '/coach';
+            return (
+              <View style={{ flexDirection: 'row', alignItems: 'center' }}>
+                <IconSymbol size={22} name="person.3.fill" color={color} />
+                {isCoachSelected && (
+                  <Text
+                    numberOfLines={1}
+                    style={{
+                      color: color,
+                      fontSize: 12,
+                      fontWeight: '600',
+                      marginLeft: 6,
+                      textAlign: 'center',
+                      flexShrink: 0,
+                    }}>
+                    教练
+                  </Text>
+                )}
+              </View>
+            );
+          },
+        }}
+      />
       <Tabs.Screen
         name="explore"
         options={{
diff --git a/app/(tabs)/coach.tsx b/app/(tabs)/coach.tsx
new file mode 100644
index 0000000..1672693
--- /dev/null
+++ b/app/(tabs)/coach.tsx
@@ -0,0 +1,1158 @@
+import { Ionicons } from '@expo/vector-icons';
+import { BlurView } from 'expo-blur';
+import * as ImagePicker from 'expo-image-picker';
+import { useLocalSearchParams, useRouter } from 'expo-router';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import {
+  ActivityIndicator,
+  Alert,
+  FlatList,
+  Image,
+  Keyboard,
+  Modal,
+  Platform,
+  ScrollView,
+  StyleSheet,
+  Text,
+  TextInput,
+  TouchableOpacity,
+  View,
+} from 'react-native';
+import Markdown from 'react-native-markdown-display';
+import Animated, { FadeInDown, FadeInUp, Layout } from 'react-native-reanimated';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
+
+import { Colors } from '@/constants/Colors';
+import { buildCosKey, buildPublicUrl } from '@/constants/Cos';
+import { getTabBarBottomPadding } from '@/constants/TabBar';
+import { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { useAuthGuard } from '@/hooks/useAuthGuard';
+import { deleteConversation, getConversationDetail, listConversations, type AiConversationListItem } from '@/services/aiCoach';
+import { loadAiCoachSessionCache, saveAiCoachSessionCache } from '@/services/aiCoachSession';
+import { api, getAuthToken, postTextStream } from '@/services/api';
+import { uploadWithRetry } from '@/services/cos';
+import { updateUser as updateUserApi } from '@/services/users';
+import type { CheckinRecord } from '@/store/checkinSlice';
+import { fetchMyProfile, updateProfile } from '@/store/userSlice';
+import dayjs from 'dayjs';
+
+type Role = 'user' | 'assistant';
+
+type ChatMessage = {
+  id: string;
+  role: Role;
+  content: string;
+};
+
+const COACH_AVATAR = 'https://plates-1251306435.cos.ap-guangzhou.myqcloud.com/images/avatar/imageCoach01.jpeg';
+
+export default function CoachScreen() {
+  const router = useRouter();
+  const params = useLocalSearchParams<{ name?: string }>();
+  const insets = useSafeAreaInsets();
+
+  const { isLoggedIn, pushIfAuthedElseLogin } = useAuthGuard();
+  // 为了让页面更贴近品牌主题与更亮的观感，这里使用亮色系配色
+  const theme = Colors.light;
+  const coachName = (params?.name || 'Sarah').toString();
+  const [input, setInput] = useState('');
+  const [isSending, setIsSending] = useState(false);
+  const [isStreaming, setIsStreaming] = useState(false);
+  const [conversationId, setConversationId] = useState<string | undefined>(undefined);
+  const [messages, setMessages] = useState<ChatMessage[]>([{
+    id: 'm_welcome',
+    role: 'assistant',
+    content: `你好，我是你的普拉提教练 ${coachName}。可以向我咨询训练、体态、康复、柔韧等问题～`,
+  }]);
+  const [historyVisible, setHistoryVisible] = useState(false);
+  const [historyLoading, setHistoryLoading] = useState(false);
+  const [historyPage, setHistoryPage] = useState(1);
+  const [historyTotal, setHistoryTotal] = useState(0);
+  const [historyItems, setHistoryItems] = useState<AiConversationListItem[]>([]);
+  const listRef = useRef<FlatList<ChatMessage>>(null);
+  const [isAtBottom, setIsAtBottom] = useState(true);
+  const didInitialScrollRef = useRef(false);
+  const [composerHeight, setComposerHeight] = useState<number>(80);
+  const shouldAutoScrollRef = useRef(false);
+  const [keyboardOffset, setKeyboardOffset] = useState(0);
+  const [headerHeight, setHeaderHeight] = useState<number>(60);
+  const pendingAssistantIdRef = useRef<string | null>(null);
+  const [selectedImages, setSelectedImages] = useState<Array<{
+    id: string;
+    localUri: string;
+    width?: number;
+    height?: number;
+    progress: number;
+    uploadedKey?: string;
+    uploadedUrl?: string;
+    error?: string;
+  }>>([]);
+  const [previewImageUri, setPreviewImageUri] = useState<string | null>(null);
+
+  const planDraft = useAppSelector((s) => s.trainingPlan?.draft);
+  const checkin = useAppSelector((s) => (s as any).checkin);
+  const dispatch = useAppDispatch();
+  const userProfile = useAppSelector((s) => (s as any)?.user?.profile);
+
+  const chips = useMemo(() => [
+    { key: 'posture', label: '体态评估', action: () => router.push('/ai-posture-assessment') },
+    { key: 'plan', label: 'AI制定训练计划', action: () => handleQuickPlan() },
+    { key: 'analyze', label: '分析运动记录', action: () => handleAnalyzeRecords() },
+    { key: 'weight', label: '记体重', action: () => insertWeightInputCard() },
+  ], [router, planDraft, checkin]);
+
+  const scrollToEnd = useCallback(() => {
+    requestAnimationFrame(() => {
+      listRef.current?.scrollToEnd({ animated: true });
+    });
+  }, []);
+
+  const handleScroll = useCallback((e: any) => {
+    try {
+      const { contentOffset, contentSize, layoutMeasurement } = e.nativeEvent || {};
+      const paddingToBottom = 60;
+      const distanceFromBottom = (contentSize?.height || 0) - ((layoutMeasurement?.height || 0) + (contentOffset?.y || 0));
+      setIsAtBottom(distanceFromBottom <= paddingToBottom);
+    } catch { }
+  }, []);
+
+  useEffect(() => {
+    // 初次进入或恢复时，保持最新消息可见
+    scrollToEnd();
+  }, [scrollToEnd]);
+  // 启动页面时尝试恢复当次应用会话缓存
+  useEffect(() => {
+    (async () => {
+      try {
+        const cached = await loadAiCoachSessionCache();
+        if (cached && Array.isArray(cached.messages) && cached.messages.length > 0) {
+          setConversationId(cached.conversationId);
+          setMessages(cached.messages as any);
+          setTimeout(scrollToEnd, 0);
+        }
+      } catch { }
+    })();
+  }, [scrollToEnd]);
+
+  // 会话变动时，轻量防抖写入缓存（在本次应用生命周期内可跨页面恢复；下次冷启动会被根布局清空）
+  const saveCacheTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  useEffect(() => {
+    if (saveCacheTimerRef.current) clearTimeout(saveCacheTimerRef.current);
+    saveCacheTimerRef.current = setTimeout(() => {
+      saveAiCoachSessionCache({ conversationId, messages: messages as any, updatedAt: Date.now() }).catch(() => { });
+    }, 150);
+    return () => { if (saveCacheTimerRef.current) clearTimeout(saveCacheTimerRef.current); };
+    // 仅在 messages 或 conversationId 变化时触发
+  }, [messages, conversationId]);
+
+
+  // 取消对 messages.length 的全局监听滚动，改为在"消息实际追加完成"后再判断与滚动，避免突兀与多次触发
+
+  useEffect(() => {
+    // 输入区高度变化时，若用户在底部则轻柔跟随一次
+    if (isAtBottom) {
+      const id = setTimeout(scrollToEnd, 0);
+      return () => clearTimeout(id);
+    }
+  }, [composerHeight, isAtBottom, scrollToEnd]);
+
+  // 键盘事件：在键盘弹出时，将输入区与悬浮按钮一起上移，避免遮挡
+  useEffect(() => {
+    let showSub: any = null;
+    let hideSub: any = null;
+    if (Platform.OS === 'ios') {
+      showSub = Keyboard.addListener('keyboardWillChangeFrame', (e: any) => {
+        try {
+          const height = Math.max(0, (e.endCoordinates?.height ?? 0) - insets.bottom);
+          setKeyboardOffset(height);
+        } catch { setKeyboardOffset(0); }
+      });
+      hideSub = Keyboard.addListener('keyboardWillHide', () => setKeyboardOffset(0));
+    } else {
+      showSub = Keyboard.addListener('keyboardDidShow', (e: any) => {
+        try { setKeyboardOffset(Math.max(0, e.endCoordinates?.height ?? 0)); } catch { setKeyboardOffset(0); }
+      });
+      hideSub = Keyboard.addListener('keyboardDidHide', () => setKeyboardOffset(0));
+    }
+    return () => {
+      try { showSub?.remove?.(); } catch { }
+      try { hideSub?.remove?.(); } catch { }
+    };
+  }, [insets.bottom]);
+
+  const streamAbortRef = useRef<{ abort: () => void } | null>(null);
+
+  useEffect(() => {
+    return () => {
+      try { streamAbortRef.current?.abort(); } catch { }
+    };
+  }, []);
+
+  function ensureConversationId(): string {
+    if (conversationId && conversationId.trim()) return conversationId;
+    const cid = `mobile-${Date.now()}-${Math.random().toString(36).slice(2, 10)}`;
+    setConversationId(cid);
+    try { console.log('[AI_CHAT][ui] create temp conversationId', cid); } catch { }
+    return cid;
+  }
+
+  function convertToServerMessages(history: ChatMessage[]): Array<{ role: 'user' | 'assistant' | 'system'; content: string }> {
+    // 仅映射 user/assistant 消息；系统提示由后端自动注入
+    return history
+      .filter((m) => m.role === 'user' || m.role === 'assistant')
+      .map((m) => ({ role: m.role, content: m.content }));
+  }
+
+  async function openHistory() {
+    if (isStreaming) {
+      try { streamAbortRef.current?.abort(); } catch { }
+    }
+    setHistoryVisible(true);
+    await refreshHistory(1);
+  }
+
+  async function refreshHistory(page = 1) {
+    try {
+      setHistoryLoading(true);
+      const resp = await listConversations(page, 20);
+      setHistoryPage(resp.page);
+      setHistoryTotal(resp.total);
+      setHistoryItems(resp.items || []);
+    } catch (e) {
+      Alert.alert('错误', (e as any)?.message || '获取会话列表失败');
+    } finally {
+      setHistoryLoading(false);
+    }
+  }
+
+  async function handleSelectConversation(id: string) {
+    try {
+      if (isStreaming) {
+        try { streamAbortRef.current?.abort(); } catch { }
+      }
+      const detail = await getConversationDetail(id);
+      if (!detail || !(detail as any).messages) {
+        Alert.alert('提示', '会话不存在或已删除');
+        return;
+      }
+      const mapped: ChatMessage[] = (detail.messages || [])
+        .filter((m) => m.role === 'user' || m.role === 'assistant')
+        .map((m, idx) => ({ id: `${m.role}_${idx}_${Date.now()}`, role: m.role as Role, content: m.content || '' }));
+      setConversationId(detail.conversationId);
+      setMessages(mapped.length ? mapped : [{ id: 'm_welcome', role: 'assistant', content: `你好，我是你的普拉提教练 ${coachName}。可以向我咨询训练、体态、康复、柔韧等问题～` }]);
+      setHistoryVisible(false);
+      setTimeout(scrollToEnd, 0);
+    } catch (e) {
+      Alert.alert('错误', (e as any)?.message || '加载会话失败');
+    }
+  }
+
+  function confirmDeleteConversation(id: string) {
+    Alert.alert('删除会话', '删除后将无法恢复，确定要删除该会话吗？', [
+      { text: '取消', style: 'cancel' },
+      {
+        text: '删除', style: 'destructive', onPress: async () => {
+          try {
+            await deleteConversation(id);
+            if (conversationId === id) {
+              setConversationId(undefined);
+              setMessages([{ id: 'm_welcome', role: 'assistant', content: `你好，我是你的普拉提教练 ${coachName}。可以向我咨询训练、体态、康复、柔韧等问题～` }]);
+            }
+            await refreshHistory(historyPage);
+          } catch (e) {
+            Alert.alert('错误', (e as any)?.message || '删除失败');
+          }
+        }
+      }
+    ]);
+  }
+
+  async function sendStream(text: string) {
+    const tokenExists = !!getAuthToken();
+    try { console.log('[AI_CHAT][ui] send start', { tokenExists, conversationId, textPreview: text.slice(0, 50) }); } catch { }
+
+    // 终止上一次未完成的流
+    if (streamAbortRef.current) {
+      try { console.log('[AI_CHAT][ui] abort previous stream'); } catch { }
+      try { streamAbortRef.current.abort(); } catch { }
+      streamAbortRef.current = null;
+    }
+
+    // 发送 body：尽量提供历史消息，后端会优先使用 conversationId 关联上下文
+    const historyForServer = convertToServerMessages(messages);
+    const cid = ensureConversationId();
+    const body = {
+      conversationId: cid,
+      messages: [...historyForServer, { role: 'user' as const, content: text }],
+      stream: true,
+    };
+
+    // 在 UI 中先放置占位回答，随后持续增量更新
+    const assistantId = `a_${Date.now()}`;
+    const userMsgId = `u_${Date.now()}_${Math.random().toString(36).slice(2, 8)}`;
+
+    const userMsg: ChatMessage = { id: userMsgId, role: 'user', content: text };
+    shouldAutoScrollRef.current = isAtBottom;
+    setMessages((m) => [...m, userMsg, { id: assistantId, role: 'assistant', content: '' }]);
+    pendingAssistantIdRef.current = assistantId;
+
+    setIsSending(true);
+    setIsStreaming(true);
+
+    let receivedAnyChunk = false;
+
+    const updateAssistantContent = (delta: string) => {
+      setMessages((prev) => {
+        const next = prev.map((msg) => {
+          if (msg.id === assistantId) {
+            return { ...msg, content: msg.content + delta };
+          }
+          return msg;
+        });
+        return next;
+      });
+    };
+
+    const onChunk = (chunk: string) => {
+      receivedAnyChunk = true;
+      const atBottomNow = isAtBottom;
+      updateAssistantContent(chunk);
+      if (atBottomNow) {
+        // 在底部时，持续开启自动滚动，并主动触发一次滚动以避免极小增量未触发 onContentSizeChange 的情况
+        shouldAutoScrollRef.current = true;
+        setTimeout(scrollToEnd, 0);
+      }
+      try { console.log('[AI_CHAT][api] chunk', { length: chunk.length, preview: chunk.slice(0, 40) }); } catch { }
+    };
+
+    const onEnd = (cidFromHeader?: string) => {
+      setIsSending(false);
+      setIsStreaming(false);
+      streamAbortRef.current = null;
+      if (cidFromHeader && !conversationId) setConversationId(cidFromHeader);
+      pendingAssistantIdRef.current = null;
+      try { console.log('[AI_CHAT][api] end', { cidFromHeader, hadChunks: receivedAnyChunk }); } catch { }
+    };
+
+    const onError = async (err: any) => {
+      try { console.warn('[AI_CHAT][api] error', err); } catch { }
+      setIsSending(false);
+      setIsStreaming(false);
+      streamAbortRef.current = null;
+      pendingAssistantIdRef.current = null;
+      // 流式失败时的降级：尝试一次性非流式
+      try {
+        const bodyNoStream = { ...body, stream: false };
+        try { console.log('[AI_CHAT][fallback] try non-stream'); } catch { }
+        const resp = await api.post<{ conversationId?: string; text: string }>('/api/ai-coach/chat', bodyNoStream);
+        const textCombined = (resp as any)?.text ?? '';
+        if ((resp as any)?.conversationId && !conversationId) {
+          setConversationId((resp as any).conversationId);
+        }
+        setMessages((prev) => prev.map((msg) => msg.id === assistantId ? { ...msg, content: textCombined || '（空响应）' } : msg));
+      } catch (e2: any) {
+        setMessages((prev) => prev.map((msg) => msg.id === assistantId ? { ...msg, content: '抱歉，请求失败，请稍后再试。' } : msg));
+        try { console.warn('[AI_CHAT][fallback] non-stream error', e2); } catch { }
+      }
+    };
+
+    try {
+      const controller = postTextStream('/api/ai-coach/chat', body, { onChunk, onEnd, onError }, { timeoutMs: 120000 });
+      streamAbortRef.current = controller;
+    } catch (e) {
+      onError(e);
+    }
+  }
+
+  async function send(text: string) {
+    if (!isLoggedIn) {
+      pushIfAuthedElseLogin('/auth/login');
+      return;
+    }
+    if (isSending) return;
+    const trimmed = text.trim();
+    if (!trimmed && selectedImages.length === 0) return;
+
+    async function ensureImagesUploaded(): Promise<string[]> {
+      const urls: string[] = [];
+      for (const img of selectedImages) {
+        if (img.uploadedUrl) {
+          urls.push(img.uploadedUrl);
+          continue;
+        }
+        try {
+          const resp = await fetch(img.localUri);
+          const blob = await resp.blob();
+          const ext = (() => {
+            const t = (blob.type || '').toLowerCase();
+            if (t.includes('png')) return 'png';
+            if (t.includes('webp')) return 'webp';
+            if (t.includes('heic')) return 'heic';
+            if (t.includes('heif')) return 'heif';
+            return 'jpg';
+          })();
+          const key = buildCosKey({ prefix: 'images/chat', ext });
+          const res = await uploadWithRetry({
+            key,
+            body: blob,
+            contentType: blob.type || 'image/jpeg',
+            onProgress: ({ percent }: { percent?: number }) => {
+              const p = typeof percent === 'number' ? percent : 0;
+              setSelectedImages((prev) => prev.map((it) => it.id === img.id ? { ...it, progress: p } : it));
+            },
+          } as any);
+          const url = buildPublicUrl(res.key);
+          urls.push(url);
+          setSelectedImages((prev) => prev.map((it) => it.id === img.id ? { ...it, uploadedKey: res.key, uploadedUrl: url, progress: 1 } : it));
+        } catch (e: any) {
+          setSelectedImages((prev) => prev.map((it) => it.id === img.id ? { ...it, error: e?.message || '上传失败' } : it));
+          throw e;
+        }
+      }
+      return urls;
+    }
+
+    try {
+      const urls = await ensureImagesUploaded();
+      const mdImages = urls.map((u) => `![image](${u})`).join('\n\n');
+      const composed = [trimmed, mdImages].filter(Boolean).join('\n\n');
+      setInput('');
+      setSelectedImages([]);
+      await sendStream(composed);
+    } catch (e: any) {
+      Alert.alert('上传失败', e?.message || '图片上传失败，请稍后重试');
+    }
+  }
+
+  function handleQuickPlan() {
+    const goalMap: Record<string, string> = {
+      postpartum_recovery: '产后恢复',
+      fat_loss: '减脂塑形',
+      posture_correction: '体态矫正',
+      core_strength: '核心力量',
+      flexibility: '柔韧灵活',
+      rehab: '康复保健',
+      stress_relief: '释压放松',
+    };
+    const goalText = planDraft?.goal ? goalMap[planDraft.goal] : '整体提升';
+    const freq = planDraft?.mode === 'sessionsPerWeek'
+      ? `${planDraft?.sessionsPerWeek ?? 3}次/周`
+      : (planDraft?.daysOfWeek?.length ? `${planDraft.daysOfWeek.length}次/周` : '3次/周');
+    const prefer = planDraft?.preferredTimeOfDay ? `偏好${planDraft.preferredTimeOfDay}` : '时间灵活';
+    const prompt = `请根据我的目标"${goalText}"、频率"${freq}"、${prefer}，制定1周的普拉提训练计划，包含每次训练主题、时长、主要动作与注意事项，并给出恢复建议。`;
+    send(prompt);
+  }
+
+  function buildTrainingSummary(): string {
+    const entries = Object.values(checkin?.byDate || {}) as CheckinRecord[];
+    if (!entries.length) return '';
+    const recent = entries.sort((a: any, b: any) => String(b.date).localeCompare(String(a.date))).slice(0, 14);
+    let totalSessions = 0;
+    let totalExercises = 0;
+    let totalCompleted = 0;
+    const categoryCount: Record<string, number> = {};
+    const exerciseCount: Record<string, number> = {};
+    for (const rec of recent) {
+      if (!rec?.items?.length) continue;
+      totalSessions += 1;
+      for (const it of rec.items) {
+        totalExercises += 1;
+        if (it.completed) totalCompleted += 1;
+        categoryCount[it.category] = (categoryCount[it.category] || 0) + 1;
+        exerciseCount[it.name] = (exerciseCount[it.name] || 0) + 1;
+      }
+    }
+    const topCategories = Object.entries(categoryCount).sort((a, b) => b[1] - a[1]).slice(0, 3).map(([k, v]) => `${k}×${v}`);
+    const topExercises = Object.entries(exerciseCount).sort((a, b) => b[1] - a[1]).slice(0, 5).map(([k, v]) => `${k}×${v}`);
+    return [
+      `统计周期：最近${recent.length}天（按有记录日计 ${totalSessions} 天）`,
+      `记录条目：${totalExercises}，完成标记：${totalCompleted}`,
+      topCategories.length ? `高频类别：${topCategories.join('，')}` : '',
+      topExercises.length ? `高频动作：${topExercises.join('，')}` : '',
+    ].filter(Boolean).join('\n');
+  }
+
+  function handleAnalyzeRecords() {
+    const summary = buildTrainingSummary();
+    if (!summary) {
+      send('我还没有可分析的打卡记录，请先在"每日打卡"添加并完成一些训练记录，然后帮我分析近期训练表现与改进建议。');
+      return;
+    }
+    const prompt = `请基于以下我的近期训练记录进行分析，输出：1）整体训练负荷与节奏；2）动作与肌群的均衡性（指出偏多/偏少）；3）容易忽视的恢复与热身建议；4）后续一周的优化建议（频次/时长/动作方向）。\n\n${summary}`;
+    send(prompt);
+  }
+
+  const pickImages = useCallback(async () => {
+    try {
+      const result = await ImagePicker.launchImageLibraryAsync({
+        mediaTypes: ImagePicker.MediaTypeOptions.Images,
+        allowsMultipleSelection: true,
+        selectionLimit: 4,
+        quality: 0.9,
+      } as any);
+      if ((result as any).canceled) return;
+      const assets = (result as any).assets || [];
+      const next = assets.map((a: any) => ({
+        id: `${a.assetId || a.fileName || a.uri}_${Math.random().toString(36).slice(2, 8)}`,
+        localUri: a.uri,
+        width: a.width,
+        height: a.height,
+        progress: 0,
+      }));
+      setSelectedImages((prev) => {
+        const merged = [...prev, ...next];
+        return merged.slice(0, 4);
+      });
+      setTimeout(scrollToEnd, 0);
+    } catch (e: any) {
+      Alert.alert('错误', e?.message || '选择图片失败');
+    }
+  }, [scrollToEnd]);
+
+  const removeSelectedImage = useCallback((id: string) => {
+    setSelectedImages((prev) => prev.filter((it) => it.id !== id));
+  }, []);
+
+  function renderItem({ item }: { item: ChatMessage }) {
+    const isUser = item.role === 'user';
+    return (
+      <Animated.View
+        entering={isUser ? FadeInUp.springify().damping(18) : FadeInDown.springify().damping(18)}
+        layout={Layout.springify().damping(18)}
+        style={[styles.row, { justifyContent: isUser ? 'flex-end' : 'flex-start' }]}
+      >
+        {!isUser && (
+          <Image source={{ uri: COACH_AVATAR }} style={styles.avatar} />
+        )}
+        <View
+          style={[
+            styles.bubble,
+            {
+              backgroundColor: isUser ? theme.primary : 'rgba(187,242,70,0.16)',
+              borderTopLeftRadius: isUser ? 16 : 6,
+              borderTopRightRadius: isUser ? 6 : 16,
+            },
+          ]}
+        >
+          {renderBubbleContent(item)}
+        </View>
+        {false}
+      </Animated.View>
+    );
+  }
+
+  function renderBubbleContent(item: ChatMessage) {
+    if (!item.content?.trim() && isStreaming && pendingAssistantIdRef.current === item.id) {
+      return <Text style={[styles.bubbleText, { color: '#687076' }]}>正在思考…</Text>;
+    }
+    if (item.content?.startsWith('__WEIGHT_INPUT_CARD__')) {
+      const preset = (() => {
+        const m = item.content.split('\n')?.[1];
+        const v = parseFloat(m || '');
+        return isNaN(v) ? '' : String(v);
+      })();
+      return (
+        <View style={{ gap: 8 }}>
+          <Text style={[styles.bubbleText, { color: '#192126', fontWeight: '700' }]}>记录今日体重</Text>
+          <View style={styles.weightRow}>
+            <TextInput
+              placeholder="例如 60.5"
+              keyboardType="decimal-pad"
+              defaultValue={preset}
+              placeholderTextColor={'#687076'}
+              style={styles.weightInput}
+              onSubmitEditing={(e) => handleSubmitWeight(e.nativeEvent.text)}
+              returnKeyType="done"
+              submitBehavior="blurAndSubmit"
+            />
+            <Text style={styles.weightUnit}>kg</Text>
+            <TouchableOpacity accessibilityRole="button" style={styles.weightSaveBtn} onPress={() => handleSubmitWeight((preset || '').toString())}>
+              <Text style={{ color: '#192126', fontWeight: '700' }}>保存</Text>
+            </TouchableOpacity>
+          </View>
+          <Text style={{ color: '#687076', fontSize: 12 }}>按回车或点击保存，即可将该体重同步到账户并发送到对话。</Text>
+        </View>
+      );
+    }
+    return (
+      <Markdown style={markdownStyles} mergeStyle>
+        {item.content}
+      </Markdown>
+    );
+  }
+
+  function insertWeightInputCard() {
+    const id = `wcard_${Date.now()}`;
+    const preset = userProfile?.weight ? Number(userProfile.weight) : undefined;
+    const payload = `__WEIGHT_INPUT_CARD__\n${preset ?? ''}`;
+    setMessages((prev) => [...prev, { id, role: 'assistant', content: payload }]);
+    setTimeout(scrollToEnd, 0);
+  }
+
+  async function handleSubmitWeight(text?: string) {
+    const val = parseFloat(String(text ?? '').trim());
+    if (isNaN(val) || val <= 0 || val > 500) {
+      Alert.alert('请输入有效体重', '请填写合理的公斤数，例如 60.5');
+      return;
+    }
+    try {
+      // 本地更新
+      dispatch(updateProfile({ weight: String(val) }));
+      // 后端同步（若有 userId 则更稳妥；后端实现容错）
+      try {
+        const userId = (userProfile as any)?.userId || (userProfile as any)?.id || (userProfile as any)?._id;
+        if (userId) {
+          await updateUserApi({ userId, weight: val });
+          await dispatch(fetchMyProfile() as any);
+        }
+      } catch (e) {
+        // 不阻断对话体验
+      }
+      // 在对话中插入"确认消息"并发送给教练
+      const textMsg = `记录了今日体重：${val} kg。`;
+      await send(textMsg);
+    } catch (e: any) {
+      Alert.alert('保存失败', e?.message || '请稍后重试');
+    }
+  }
+
+  return (
+    <View style={[styles.screen, { backgroundColor: theme.background }]}>
+      {/* 顶部标题区域，只显示教练名称和历史按钮 */}
+      <View 
+        style={[styles.header, { paddingTop: insets.top + 10 }]}
+        onLayout={(e) => {
+          const h = e.nativeEvent.layout.height;
+          if (h && Math.abs(h - headerHeight) > 0.5) setHeaderHeight(h);
+        }}
+      >
+        <Text style={[styles.headerTitle, { color: theme.text }]}>教练 {coachName}</Text>
+        <TouchableOpacity accessibilityRole="button" onPress={openHistory} style={[styles.historyButton, { backgroundColor: 'rgba(187,242,70,0.2)' }]}>
+          <Ionicons name="time-outline" size={18} color={theme.onPrimary} />
+        </TouchableOpacity>
+      </View>
+
+      {/* 消息列表容器 - 设置固定高度避免输入框重叠 */}
+      <View style={{ 
+        flex: 1, 
+        marginBottom: composerHeight + keyboardOffset 
+      }}>
+        <FlatList
+          ref={listRef}
+          data={messages}
+          keyExtractor={(m) => m.id}
+          renderItem={renderItem}
+          onLayout={() => {
+            // 确保首屏布局后也尝试滚动
+            if (!didInitialScrollRef.current) {
+              didInitialScrollRef.current = true;
+              setTimeout(scrollToEnd, 0);
+              requestAnimationFrame(scrollToEnd);
+            }
+          }}
+          contentContainerStyle={{ 
+            paddingHorizontal: 14, 
+            paddingTop: 8, 
+            paddingBottom: 16 
+          }}
+          onContentSizeChange={() => {
+            // 首次内容变化强制滚底，其余仅在接近底部时滚动
+            if (!didInitialScrollRef.current) {
+              didInitialScrollRef.current = true;
+              setTimeout(scrollToEnd, 0);
+              requestAnimationFrame(scrollToEnd);
+              return;
+            }
+            if (shouldAutoScrollRef.current) {
+              shouldAutoScrollRef.current = false;
+              setTimeout(scrollToEnd, 0);
+            }
+          }}
+          onScroll={handleScroll}
+          scrollEventThrottle={16}
+          showsVerticalScrollIndicator={false}
+        />
+      </View>
+
+      <BlurView
+        intensity={18}
+        tint={'light'}
+        style={[styles.composerWrap, { paddingBottom: getTabBarBottomPadding() + 10, bottom: keyboardOffset }]}
+        onLayout={(e) => {
+          const h = e.nativeEvent.layout.height;
+          if (h && Math.abs(h - composerHeight) > 0.5) setComposerHeight(h);
+        }}
+      >
+        <ScrollView
+          horizontal
+          showsHorizontalScrollIndicator={false}
+          decelerationRate="fast"
+          snapToAlignment="start"
+          style={styles.chipsRowScroll}
+          contentContainerStyle={{ paddingHorizontal: 6, gap: 8 }}
+        >
+          {chips.map((c) => (
+            <TouchableOpacity key={c.key} style={[styles.chip, { borderColor: 'rgba(187,242,70,0.35)', backgroundColor: 'rgba(187,242,70,0.12)' }]} onPress={c.action}>
+              <Text style={[styles.chipText, { color: '#192126' }]}>{c.label}</Text>
+            </TouchableOpacity>
+          ))}
+        </ScrollView>
+
+        {!!selectedImages.length && (
+          <ScrollView
+            horizontal
+            showsHorizontalScrollIndicator={false}
+            style={styles.imagesRow}
+            contentContainerStyle={{ paddingHorizontal: 6, gap: 8 }}
+          >
+            {selectedImages.map((img) => (
+              <View key={img.id} style={styles.imageThumbWrap}>
+                <TouchableOpacity accessibilityRole="imagebutton" onPress={() => setPreviewImageUri(img.uploadedUrl || img.localUri)}>
+                  <Image source={{ uri: img.uploadedUrl || img.localUri }} style={styles.imageThumb} />
+                </TouchableOpacity>
+                {!!(img.progress > 0 && img.progress < 1) && (
+                  <View style={styles.imageProgressOverlay}>
+                    <Text style={styles.imageProgressText}>{Math.round((img.progress || 0) * 100)}%</Text>
+                  </View>
+                )}
+                <TouchableOpacity accessibilityRole="button" onPress={() => removeSelectedImage(img.id)} style={styles.imageRemoveBtn}>
+                  <Ionicons name="close" size={12} color="#fff" />
+                </TouchableOpacity>
+              </View>
+            ))}
+          </ScrollView>
+        )}
+
+        <View style={[styles.inputRow, { borderColor: 'rgba(187,242,70,0.35)', backgroundColor: 'rgba(187,242,70,0.08)' }]}>
+          <TouchableOpacity
+            accessibilityRole="button"
+            onPress={pickImages}
+            style={[styles.mediaBtn, { backgroundColor: 'rgba(187,242,70,0.16)' }]}
+          >
+            <Ionicons name="image-outline" size={18} color={'#192126'} />
+          </TouchableOpacity>
+          <TextInput
+            placeholder="问我任何与普拉提相关的问题..."
+            placeholderTextColor={theme.textMuted}
+            style={[styles.input, { color: '#192126' }]}
+            value={input}
+            onChangeText={setInput}
+            multiline
+            onSubmitEditing={() => send(input)}
+            blurOnSubmit={false}
+          />
+          <TouchableOpacity
+            accessibilityRole="button"
+            disabled={(!input.trim() && selectedImages.length === 0) || isSending}
+            onPress={() => send(input)}
+            style={[
+              styles.sendBtn,
+              { backgroundColor: theme.primary, opacity: (input.trim() || selectedImages.length > 0) && !isSending ? 1 : 0.5 }
+            ]}
+          >
+            {isSending ? (
+              <ActivityIndicator color={theme.onPrimary} />
+            ) : (
+              <Ionicons name="arrow-up" size={18} color={theme.onPrimary} />
+            )}
+          </TouchableOpacity>
+        </View>
+      </BlurView>
+
+      {!isAtBottom && (
+        <TouchableOpacity
+          accessibilityRole="button"
+          onPress={scrollToEnd}
+          style={[styles.scrollToBottomFab, { 
+            bottom:  composerHeight + keyboardOffset + 10, 
+            backgroundColor: theme.primary 
+          }]}
+        >
+          <Ionicons name="chevron-down" size={18} color={theme.onPrimary} />
+        </TouchableOpacity>
+      )}
+
+      <Modal transparent visible={historyVisible} animationType="fade" onRequestClose={() => setHistoryVisible(false)}>
+        <TouchableOpacity activeOpacity={1} style={styles.modalBackdrop} onPress={() => setHistoryVisible(false)}>
+          <View style={[styles.modalSheet, { backgroundColor: '#FFFFFF' }]}>
+            <View style={styles.modalHeader}>
+              <Text style={styles.modalTitle}>历史会话</Text>
+              <TouchableOpacity accessibilityRole="button" onPress={() => refreshHistory(historyPage)} style={styles.modalRefreshBtn}>
+                <Ionicons name="refresh" size={16} color="#192126" />
+              </TouchableOpacity>
+            </View>
+            {historyLoading ? (
+              <View style={{ paddingVertical: 20, alignItems: 'center' }}>
+                <ActivityIndicator />
+                <Text style={{ marginTop: 8, color: '#687076' }}>加载中...</Text>
+              </View>
+            ) : (
+              <ScrollView style={{ maxHeight: 360 }}>
+                {historyItems.length === 0 ? (
+                  <Text style={{ padding: 16, color: '#687076' }}>暂无会话</Text>
+                ) : (
+                  historyItems.map((it) => (
+                    <View key={it.conversationId} style={styles.historyRow}>
+                      <TouchableOpacity
+                        style={{ flex: 1 }}
+                        onPress={() => handleSelectConversation(it.conversationId)}
+                      >
+                        <Text style={styles.historyTitle} numberOfLines={1}>{it.title || '未命名会话'}</Text>
+                        <Text style={styles.historyMeta}>
+                          {dayjs(it.lastMessageAt || it.createdAt).format('YYYY/MM/DD HH:mm')}
+                        </Text>
+                      </TouchableOpacity>
+                      <TouchableOpacity accessibilityRole="button" onPress={() => confirmDeleteConversation(it.conversationId)} style={styles.historyDeleteBtn}>
+                        <Ionicons name="trash-outline" size={16} color="#FF4444" />
+                      </TouchableOpacity>
+                    </View>
+                  ))
+                )}
+              </ScrollView>
+            )}
+            <View style={styles.modalFooter}>
+              <TouchableOpacity accessibilityRole="button" onPress={() => setHistoryVisible(false)} style={styles.modalCloseBtn}>
+                <Text style={{ color: '#192126', fontWeight: '600' }}>关闭</Text>
+              </TouchableOpacity>
+            </View>
+          </View>
+        </TouchableOpacity>
+      </Modal>
+      <Modal transparent visible={!!previewImageUri} animationType="fade" onRequestClose={() => setPreviewImageUri(null)}>
+        <TouchableOpacity activeOpacity={1} style={styles.previewBackdrop} onPress={() => setPreviewImageUri(null)}>
+          <View style={styles.previewBox}>
+            {previewImageUri ? (
+              <Image source={{ uri: previewImageUri }} style={styles.previewImage} resizeMode="contain" />
+            ) : null}
+          </View>
+        </TouchableOpacity>
+      </Modal>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  screen: {
+    flex: 1,
+  },
+  header: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    paddingHorizontal: 16,
+    paddingBottom: 10,
+  },
+  headerTitle: {
+    fontSize: 20,
+    fontWeight: '800',
+  },
+  historyButton: {
+    width: 32,
+    height: 32,
+    borderRadius: 16,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  row: {
+    flexDirection: 'row',
+    alignItems: 'flex-end',
+    gap: 8,
+    marginVertical: 6,
+  },
+  avatar: {
+    width: 28,
+    height: 28,
+    borderRadius: 14,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  avatarText: {
+    color: '#192126',
+    fontSize: 12,
+    fontWeight: '800',
+  },
+  bubble: {
+    maxWidth: '82%',
+    paddingHorizontal: 12,
+    paddingVertical: 10,
+    borderRadius: 16,
+  },
+  bubbleText: {
+    fontSize: 15,
+    lineHeight: 22,
+  },
+  weightRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 8,
+  },
+  weightInput: {
+    flex: 1,
+    height: 36,
+    borderWidth: 1,
+    borderColor: 'rgba(0,0,0,0.08)',
+    borderRadius: 8,
+    paddingHorizontal: 10,
+    backgroundColor: 'rgba(255,255,255,0.9)',
+    color: '#192126',
+  },
+  weightUnit: {
+    color: '#192126',
+    fontWeight: '700',
+  },
+  weightSaveBtn: {
+    height: 36,
+    paddingHorizontal: 12,
+    borderRadius: 8,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'rgba(187,242,70,0.6)'
+  },
+  // markdown 基础样式承载容器的字体尺寸保持与气泡一致
+  composerWrap: {
+    position: 'absolute',
+    left: 0,
+    right: 0,
+    bottom: 0,
+    paddingTop: 8,
+    paddingHorizontal: 10,
+    borderTopWidth: 0,
+  },
+  chipsRow: {
+    flexDirection: 'row',
+    gap: 8,
+    paddingHorizontal: 6,
+    marginBottom: 8,
+  },
+  chipsRowScroll: {
+    marginBottom: 8,
+  },
+  chip: {
+    paddingHorizontal: 10,
+    height: 34,
+    borderRadius: 18,
+    borderWidth: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'transparent',
+  },
+  chipText: {
+    fontSize: 13,
+    fontWeight: '600',
+  },
+  imagesRow: {
+    maxHeight: 92,
+    marginBottom: 8,
+  },
+  imageThumbWrap: {
+    width: 72,
+    height: 72,
+    borderRadius: 12,
+    overflow: 'hidden',
+    position: 'relative',
+    backgroundColor: 'rgba(0,0,0,0.06)'
+  },
+  imageThumb: {
+    width: '100%',
+    height: '100%'
+  },
+  imageRemoveBtn: {
+    position: 'absolute',
+    right: 4,
+    top: 4,
+    width: 20,
+    height: 20,
+    borderRadius: 10,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'rgba(0,0,0,0.45)'
+  },
+  imageProgressOverlay: {
+    position: 'absolute',
+    left: 0,
+    right: 0,
+    top: 0,
+    bottom: 0,
+    backgroundColor: 'rgba(0,0,0,0.35)',
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  imageProgressText: {
+    color: '#fff',
+    fontWeight: '700'
+  },
+  inputRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    padding: 8,
+    borderWidth: 1,
+    borderRadius: 16,
+    backgroundColor: 'rgba(0,0,0,0.04)'
+  },
+  mediaBtn: {
+    width: 40,
+    height: 40,
+    borderRadius: 12,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginRight: 6,
+  },
+  input: {
+    flex: 1,
+    fontSize: 15,
+    maxHeight: 120,
+    minHeight: 40,
+    paddingHorizontal: 8,
+    paddingVertical: 6,
+    textAlignVertical: 'center',
+  },
+  sendBtn: {
+    width: 40,
+    height: 40,
+    borderRadius: 20,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  scrollToBottomFab: {
+    position: 'absolute',
+    right: 16,
+    width: 40,
+    height: 40,
+    borderRadius: 20,
+    alignItems: 'center',
+    justifyContent: 'center',
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 2 },
+    shadowOpacity: 0.15,
+    shadowRadius: 4,
+    elevation: 2,
+  },
+  modalBackdrop: {
+    flex: 1,
+    backgroundColor: 'rgba(0,0,0,0.35)',
+    padding: 16,
+    justifyContent: 'flex-end',
+  },
+  modalSheet: {
+    borderTopLeftRadius: 16,
+    borderTopRightRadius: 16,
+    paddingHorizontal: 12,
+    paddingTop: 10,
+    paddingBottom: 12,
+  },
+  modalHeader: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    paddingHorizontal: 4,
+    paddingBottom: 8,
+  },
+  modalTitle: {
+    fontSize: 16,
+    fontWeight: '800',
+    color: '#192126',
+  },
+  modalRefreshBtn: {
+    width: 28,
+    height: 28,
+    borderRadius: 14,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'rgba(0,0,0,0.06)'
+  },
+  historyRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingVertical: 10,
+    paddingHorizontal: 8,
+    borderRadius: 10,
+  },
+  historyTitle: {
+    fontSize: 15,
+    color: '#192126',
+    fontWeight: '600',
+  },
+  historyMeta: {
+    marginTop: 2,
+    fontSize: 12,
+    color: '#687076',
+  },
+  historyDeleteBtn: {
+    width: 28,
+    height: 28,
+    borderRadius: 14,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'rgba(255,68,68,0.08)'
+  },
+  modalFooter: {
+    paddingTop: 8,
+    alignItems: 'flex-end',
+  },
+  modalCloseBtn: {
+    paddingHorizontal: 14,
+    paddingVertical: 8,
+    borderRadius: 10,
+    backgroundColor: 'rgba(0,0,0,0.06)'
+  },
+  previewBackdrop: {
+    flex: 1,
+    backgroundColor: 'rgba(0,0,0,0.85)',
+    alignItems: 'center',
+    justifyContent: 'center',
+    padding: 16,
+  },
+  previewBox: {
+    width: '100%',
+    height: '80%',
+    borderRadius: 12,
+    overflow: 'hidden',
+  },
+  previewImage: {
+    width: '100%',
+    height: '100%',
+  },
+});
+
+const markdownStyles = {
+  body: {
+    color: '#192126',
+    fontSize: 15,
+    lineHeight: 22,
+  },
+  paragraph: {
+    marginTop: 2,
+    marginBottom: 2,
+  },
+  bullet_list: {
+    marginVertical: 4,
+  },
+  ordered_list: {
+    marginVertical: 4,
+  },
+  list_item: {
+    flexDirection: 'row',
+  },
+  code_inline: {
+    backgroundColor: 'rgba(0,0,0,0.06)',
+    borderRadius: 4,
+    paddingHorizontal: 4,
+    paddingVertical: 2,
+  },
+  code_block: {
+    backgroundColor: 'rgba(0,0,0,0.06)',
+    borderRadius: 8,
+    paddingHorizontal: 8,
+    paddingVertical: 6,
+  },
+  fence: {
+    backgroundColor: 'rgba(0,0,0,0.06)',
+    borderRadius: 8,
+    paddingHorizontal: 8,
+    paddingVertical: 6,
+  },
+  heading1: { fontSize: 20, fontWeight: '800', marginVertical: 6 },
+  heading2: { fontSize: 18, fontWeight: '800', marginVertical: 6 },
+  heading3: { fontSize: 16, fontWeight: '800', marginVertical: 6 },
+  link: { color: '#246BFD' },
+} as const;
diff --git a/app/(tabs)/index.tsx b/app/(tabs)/index.tsx
index b316076..5637f32 100644
--- a/app/(tabs)/index.tsx
+++ b/app/(tabs)/index.tsx
@@ -75,9 +75,8 @@ export default function HomeScreen() {
       const snapX = distLeft <= distRight ? minX : maxX;
       Animated.spring(pan, { toValue: { x: snapX, y: clampedY }, useNativeDriver: false, bounciness: 6 }).start(() => {
         if (!dragState.current.moved) {
-          // Treat as tap
-          // @ts-ignore - expo-router string ok
-          router.push('/ai-coach-chat?name=Iris' as any);
+          // 切换到教练 tab，并传递name参数
+          router.push('/coach?name=Iris' as any);
         }
       });
     },
@@ -91,7 +90,6 @@ export default function HomeScreen() {
       title: string;
       subtitle: string;
       level?: '初学者' | '中级' | '高级';
-      progress: number;
       onPress?: () => void;
     }
     | {
@@ -115,7 +113,6 @@ export default function HomeScreen() {
         title: '今日训练',
         subtitle: '完成一次普拉提训练，记录你的坚持',
         level: '初学者',
-        progress: 0,
         onPress: () => pushIfAuthedElseLogin('/workout/today'),
       },
       {
@@ -126,7 +123,6 @@ export default function HomeScreen() {
         title: '体态评估',
         subtitle: '评估你的体态，制定训练计划',
         level: '初学者',
-        progress: 0,
         onPress: () => router.push('/ai-posture-assessment'),
       },
       ...listRecommendedArticles().map((a) => ({
@@ -194,7 +190,6 @@ export default function HomeScreen() {
               image: 'https://plates-1251306435.cos.ap-guangzhou.myqcloud.com/images/imagedemo.jpeg',
               title: c.title || '今日训练',
               subtitle: c.subtitle || '完成一次普拉提训练，记录你的坚持',
-              progress: 0,
               onPress: () => pushIfAuthedElseLogin('/workout/today'),
             });
           }
@@ -282,6 +277,22 @@ export default function HomeScreen() {
             <ThemedText style={styles.sectionTitle}>热点功能</ThemedText>
 
             <View style={styles.featureGrid}>
+
+            <Pressable
+                style={[styles.featureCard, styles.featureCardQuinary]}
+                onPress={() => pushIfAuthedElseLogin('/workout/today')}
+              >
+                <View style={styles.featureIconWrapper}>
+                  <View style={styles.featureIconPlaceholder}>
+                  <Image
+                    source={require('@/assets/images/icons/iconWorkout.png')}
+                    style={styles.featureIconImage}
+                  />
+                  </View>
+                </View>
+                <ThemedText style={styles.featureTitle}>训练</ThemedText>
+              </Pressable>
+
               <Pressable
                 style={[styles.featureCard, styles.featureCardPrimary]}
                 onPress={() => router.push('/ai-posture-assessment')}
@@ -292,7 +303,7 @@ export default function HomeScreen() {
                     style={styles.featureIconImage}
                   />
                 </View>
-                <ThemedText style={styles.featureTitle}>AI体态评估</ThemedText>
+                <ThemedText style={styles.featureTitle}>体态</ThemedText>
               </Pressable>
 
               <Pressable
@@ -307,8 +318,11 @@ export default function HomeScreen() {
                   />
                   </View>
                 </View>
-                <ThemedText style={styles.featureTitle}>计划管理</ThemedText>
+                <ThemedText style={styles.featureTitle}>计划</ThemedText>
               </Pressable>
+
+
+       
             </View>
           </View>
 
@@ -344,7 +358,6 @@ export default function HomeScreen() {
                     title={item.title}
                     subtitle={item.subtitle}
                     level={item.level}
-                    progress={item.progress}
                   />
                 );
                 return item.onPress ? (
@@ -490,6 +503,9 @@ const styles = StyleSheet.create({
   featureCardQuaternary: {
     backgroundColor: '#fa709a',
   },
+  featureCardQuinary: {
+    backgroundColor: '#f59e0b',
+  },
   featureIconWrapper: {
     width: 32,
     height: 32,
diff --git a/app/(tabs)/personal.tsx b/app/(tabs)/personal.tsx
index 3b3789b..4594b75 100644
--- a/app/(tabs)/personal.tsx
+++ b/app/(tabs)/personal.tsx
@@ -1,23 +1,23 @@
+import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
 import { Colors } from '@/constants/Colors';
 import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { useColorScheme } from '@/hooks/useColorScheme';
-import { api } from '@/services/api';
-import { DEFAULT_MEMBER_NAME, fetchMyProfile, logout } from '@/store/userSlice';
+import { DEFAULT_MEMBER_NAME, fetchMyProfile } from '@/store/userSlice';
 import { Ionicons } from '@expo/vector-icons';
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
 import { useFocusEffect } from '@react-navigation/native';
-import type { Href } from 'expo-router';
-import { router } from 'expo-router';
 import React, { useMemo, useState } from 'react';
-import { Alert, Image, SafeAreaView, ScrollView, StatusBar, StyleSheet, Switch, Text, TouchableOpacity, View } from 'react-native';
+import { Alert, Image, Linking, SafeAreaView, ScrollView, StatusBar, StyleSheet, Switch, Text, TouchableOpacity, View } from 'react-native';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 const DEFAULT_AVATAR_URL = 'https://plates-1251306435.cos.ap-guangzhou.myqcloud.com/images/avatar/avatarGirl01.jpeg';
 
 export default function PersonalScreen() {
   const dispatch = useAppDispatch();
+  const { confirmLogout, confirmDeleteAccount, isLoggedIn, pushIfAuthedElseLogin } = useAuthGuard();
   const insets = useSafeAreaInsets();
   const tabBarHeight = useBottomTabBarHeight();
   const colorScheme = useColorScheme();
@@ -95,32 +95,7 @@ export default function PersonalScreen() {
 
 
 
-  const handleDeleteAccount = () => {
-    Alert.alert(
-      '确认注销帐号',
-      '此操作不可恢复，将删除您的帐号及相关数据。确定继续吗？',
-      [
-        { text: '取消', style: 'cancel' },
-        {
-          text: '确认注销',
-          style: 'destructive',
-          onPress: async () => {
-            try {
-              await api.delete('/api/users/delete-account');
-              await AsyncStorage.multiRemove(['@user_personal_info']);
-              await dispatch(logout()).unwrap();
-              Alert.alert('帐号已注销', '您的帐号已成功注销');
-              router.replace('/auth/login');
-            } catch (err: any) {
-              const message = err?.message || '注销失败，请稍后重试';
-              Alert.alert('注销失败', message);
-            }
-          },
-        },
-      ],
-      { cancelable: true }
-    );
-  };
+
 
   const UserInfoSection = () => (
     <View style={[styles.userInfoCard, { backgroundColor: colorTokens.card }]}>
@@ -138,7 +113,7 @@ export default function PersonalScreen() {
         </View>
 
         {/* 编辑按钮 */}
-        <TouchableOpacity style={dynamicStyles.editButton} onPress={() => router.push('/profile/edit')}>
+        <TouchableOpacity style={dynamicStyles.editButton} onPress={() => pushIfAuthedElseLogin('/profile/edit')}>
           <Text style={dynamicStyles.editButtonText}>编辑</Text>
         </TouchableOpacity>
       </View>
@@ -170,7 +145,8 @@ export default function PersonalScreen() {
         <TouchableOpacity
           key={index}
           style={styles.menuItem}
-          onPress={item.onPress}
+          onPress={item.type === 'switch' ? undefined : item.onPress}
+          disabled={item.type === 'switch'}
         >
           <View style={styles.menuItemLeft}>
             <View style={[
@@ -187,8 +163,14 @@ export default function PersonalScreen() {
           </View>
           {item.type === 'switch' ? (
             <Switch
-              value={notificationEnabled}
-              onValueChange={setNotificationEnabled}
+              value={isLoggedIn ? notificationEnabled : false}
+              onValueChange={(value) => {
+                if (!isLoggedIn) {
+                  pushIfAuthedElseLogin('/profile/notification-settings');
+                  return;
+                }
+                setNotificationEnabled(value);
+              }}
               trackColor={{ false: '#E5E5E5', true: colors.primary }}
               thumbColor="#FFFFFF"
               style={styles.switch}
@@ -243,12 +225,20 @@ export default function PersonalScreen() {
         {
           icon: 'flag-outline' as const,
           title: '目标管理',
-          onPress: () => router.push('/profile/goals' as Href),
-        },
-        {
-          icon: 'stats-chart-outline' as const,
-          title: '训练进度',
+          onPress: () => pushIfAuthedElseLogin('/profile/goals'),
         },
+        // {
+        //   icon: 'stats-chart-outline' as const,
+        //   title: '训练进度',
+        //   onPress: () => {
+        //     // 训练进度页面暂未实现，先显示提示
+        //     if (isLoggedIn) {
+        //       Alert.alert('提示', '训练进度功能正在开发中');
+        //     } else {
+        //       pushIfAuthedElseLogin('/profile/training-progress');
+        //     }
+        //   },
+        // },
       ],
     },
     {
@@ -264,42 +254,36 @@ export default function PersonalScreen() {
     {
       title: '其他',
       items: [
-        {
-          icon: 'mail-outline' as const,
-          title: '联系我们',
-        },
         {
           icon: 'shield-checkmark-outline' as const,
           title: '隐私政策',
+          onPress: () => Linking.openURL(PRIVACY_POLICY_URL),
         },
         {
-          icon: 'settings-outline' as const,
-          title: '设置',
+          icon: 'document-text-outline' as const,
+          title: '用户协议',
+          onPress: () => Linking.openURL(USER_AGREEMENT_URL),
         },
       ],
     },
-    {
+    // 只有登录用户才显示账号与安全菜单
+    ...(isLoggedIn ? [{
       title: '账号与安全',
       items: [
+        {
+          icon: 'log-out-outline' as const,
+          title: '退出登录',
+          onPress: confirmLogout,
+          isDanger: false,
+        },
         {
           icon: 'trash-outline' as const,
           title: '注销帐号',
-          onPress: handleDeleteAccount,
+          onPress: confirmDeleteAccount,
           isDanger: true,
         },
       ],
-    },
-    {
-      title: '开发者',
-      items: [
-        {
-          icon: 'refresh-outline' as const,
-          title: '重置引导流程',
-          onPress: handleResetOnboarding,
-          isDanger: true,
-        },
-      ],
-    },
+    }] : []),
   ];
 
   return (
@@ -317,12 +301,6 @@ export default function PersonalScreen() {
             <MenuSection key={index} title={section.title} items={section.items} />
           ))}
 
-          {/* 底部浮动按钮 */}
-          <View style={[styles.floatingButtonContainer, { bottom: Math.max(30, tabBarHeight / 2) + (insets?.bottom ?? 0) }]}>
-            <TouchableOpacity style={dynamicStyles.floatingButton}>
-              <Ionicons name="search" size={24} color="#192126" />
-            </TouchableOpacity>
-          </View>
         </ScrollView>
       </SafeAreaView>
     </View>
@@ -430,6 +408,7 @@ const styles = StyleSheet.create({
   menuItemText: {
     fontSize: 16,
     flex: 1,
+    fontWeight: '600',
   },
   switch: {
     transform: [{ scaleX: 0.8 }, { scaleY: 0.8 }],
diff --git a/app/auth/login.tsx b/app/auth/login.tsx
index 2c9bfb2..ee1f1b9 100644
--- a/app/auth/login.tsx
+++ b/app/auth/login.tsx
@@ -3,11 +3,12 @@ import * as AppleAuthentication from 'expo-apple-authentication';
 import { LinearGradient } from 'expo-linear-gradient';
 import { useLocalSearchParams, useRouter } from 'expo-router';
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { Alert, Animated, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
+import { Alert, Animated, Linking, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 
 import { ThemedText } from '@/components/ThemedText';
 import { ThemedView } from '@/components/ThemedView';
+import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
 import { Colors } from '@/constants/Colors';
 import { useAppDispatch } from '@/hooks/redux';
 import { useColorScheme } from '@/hooks/useColorScheme';
@@ -230,8 +231,8 @@ export default function LoginScreen() {
 
         <ScrollView contentContainerStyle={styles.content} showsVerticalScrollIndicator={false}>
           <View style={styles.headerWrap}>
-            <ThemedText style={[styles.title, { color: color.text }]}>数字普拉提</ThemedText>
-            <ThemedText style={[styles.subtitle, { color: color.textMuted }]}>欢迎登录</ThemedText>
+            <ThemedText style={[styles.title, { color: color.text }]}>普拉提助手</ThemedText>
+            <ThemedText style={[styles.subtitle, { color: color.textMuted }]}>欢迎登录普拉提星球</ThemedText>
           </View>
 
           {/* Apple 登录 */}
@@ -252,22 +253,6 @@ export default function LoginScreen() {
             </Pressable>
           )}
 
-          {/* 游客登录（弱化样式） */}
-          <Pressable
-            accessibilityRole="button"
-            onPress={() => guardAgreement(onGuestLogin)}
-            disabled={loading}
-            style={({ pressed }) => [
-              styles.guestButton,
-              { borderColor: color.border, backgroundColor: color.surface },
-              loading && { opacity: 0.7 },
-              pressed && { transform: [{ scale: 0.98 }] },
-            ]}
-          >
-            <Ionicons name="person-circle-outline" size={22} color={color.neutral200} style={{ marginRight: 8 }} />
-            <Text style={[styles.guestText, { color: color.neutral200 }]}>以游客身份继续</Text>
-          </Pressable>
-
           {/* 协议勾选 */}
           <View style={styles.agreementRow}>
             <Pressable onPress={() => setHasAgreed((v) => !v)} style={styles.checkboxWrap} accessibilityRole="checkbox" accessibilityState={{ checked: hasAgreed }}>
@@ -281,11 +266,11 @@ export default function LoginScreen() {
               </View>
             </Pressable>
             <Text style={[styles.agreementText, { color: color.textMuted }]}>我已阅读并同意</Text>
-            <Pressable onPress={() => router.push('/legal/privacy-policy')}>
+            <Pressable onPress={() => Linking.openURL(PRIVACY_POLICY_URL)}>
               <Text style={[styles.link, { color: color.primary }]}>《隐私政策》</Text>
             </Pressable>
             <Text style={[styles.agreementText, { color: color.textMuted }]}>和</Text>
-            <Pressable onPress={() => router.push('/legal/user-agreement')}>
+            <Pressable onPress={() => Linking.openURL(USER_AGREEMENT_URL)}>
               <Text style={[styles.link, { color: color.primary }]}>《用户协议》</Text>
             </Pressable>
           </View>
diff --git a/app/index.tsx b/app/index.tsx
index 5f7cb80..0756595 100644
--- a/app/index.tsx
+++ b/app/index.tsx
@@ -1,6 +1,5 @@
 import { ThemedView } from '@/components/ThemedView';
 import { useThemeColor } from '@/hooks/useThemeColor';
-import AsyncStorage from '@react-native-async-storage/async-storage';
 import { router } from 'expo-router';
 import React, { useEffect, useState } from 'react';
 import { ActivityIndicator, View } from 'react-native';
@@ -18,22 +17,24 @@ export default function SplashScreen() {
 
   const checkOnboardingStatus = async () => {
     try {
-      const onboardingCompleted = await AsyncStorage.getItem(ONBOARDING_COMPLETED_KEY);
+      // const onboardingCompleted = await AsyncStorage.getItem(ONBOARDING_COMPLETED_KEY);
 
-      if (onboardingCompleted === 'true') {
-        router.replace('/(tabs)');
-      } else {
-        router.replace('/onboarding');
-      }
-      setIsLoading(false);
+      // if (onboardingCompleted === 'true') {
+      //   router.replace('/(tabs)');
+      // } else {
+      //   router.replace('/onboarding');
+      // }
+      // setIsLoading(false);
+      router.replace('/(tabs)');
     } catch (error) {
       console.error('检查引导状态失败:', error);
       // 如果出现错误，默认显示引导页面
-      setTimeout(() => {
-        router.replace('/onboarding');
-        setIsLoading(false);
-      }, 1000);
+      // setTimeout(() => {
+      //   router.replace('/onboarding');
+      //   setIsLoading(false);
+      // }, 1000);
     }
+    setIsLoading(false);
   };
 
   if (!isLoading) {
diff --git a/app/workout/today.tsx b/app/workout/today.tsx
index 247a510..0769907 100644
--- a/app/workout/today.tsx
+++ b/app/workout/today.tsx
@@ -427,7 +427,7 @@ export default function TodayWorkoutScreen() {
 
       <SafeAreaView style={styles.contentWrapper}>
         <HeaderBar
-          title="快速训练"
+          title="开始训练"
           onBack={() => router.back()}
           withSafeTop={false}
           transparent={true}
diff --git a/assets/images/icons/iconWorkout.png b/assets/images/icons/iconWorkout.png
new file mode 100644
index 0000000..8635eb1
Binary files /dev/null and b/assets/images/icons/iconWorkout.png differ
diff --git a/components/PlanCard.tsx b/components/PlanCard.tsx
index fc0b9db..d67e8b1 100644
--- a/components/PlanCard.tsx
+++ b/components/PlanCard.tsx
@@ -1,4 +1,4 @@
-import { ProgressBar } from '@/components/ProgressBar';
+
 import React from 'react';
 import { Image, StyleSheet, Text, View } from 'react-native';
 
@@ -9,10 +9,9 @@ type PlanCardProps = {
   title: string;
   subtitle: string;
   level?: Level;
-  progress: number; // 0 - 1
 };
 
-export function PlanCard({ image, title, subtitle, level, progress }: PlanCardProps) {
+export function PlanCard({ image, title, subtitle, level }: PlanCardProps) {
   return (
     <View style={styles.card}>
       <Image source={{ uri: image }} style={styles.image} />
@@ -27,10 +26,6 @@ export function PlanCard({ image, title, subtitle, level, progress }: PlanCardPr
 
         <Text style={styles.title}>{title}</Text>
         <Text style={styles.subtitle}>{subtitle}</Text>
-
-        <View style={styles.progressWrapper}>
-          <ProgressBar progress={progress} showLabel={true} />
-        </View>
       </View>
     </View>
   );
@@ -86,9 +81,6 @@ const styles = StyleSheet.create({
     fontSize: 12,
     color: '#B1B6BD',
   },
-  progressWrapper: {
-    marginTop: 18,
-  },
 });
 
 
diff --git a/components/PrivacyConsentModal.tsx b/components/PrivacyConsentModal.tsx
index 18b580f..75202a2 100644
--- a/components/PrivacyConsentModal.tsx
+++ b/components/PrivacyConsentModal.tsx
@@ -1,12 +1,13 @@
-import { router } from 'expo-router';
+import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
 import React from 'react';
 import {
-    Dimensions,
-    Modal,
-    StyleSheet,
-    Text,
-    TouchableOpacity,
-    View
+  Dimensions,
+  Linking,
+  Modal,
+  StyleSheet,
+  Text,
+  TouchableOpacity,
+  View
 } from 'react-native';
 
 const { width } = Dimensions.get('window');
@@ -23,11 +24,11 @@ export default function PrivacyConsentModal({
   onDisagree,
 }: PrivacyConsentModalProps) {
   const handleUserAgreementPress = () => {
-    router.push('/legal/user-agreement');
+    Linking.openURL(USER_AGREEMENT_URL);
   };
 
   const handlePrivacyPolicyPress = () => {
-    router.push('/legal/privacy-policy');
+    Linking.openURL(PRIVACY_POLICY_URL);
   };
 
   return (
diff --git a/components/ui/IconSymbol.tsx b/components/ui/IconSymbol.tsx
index 87c1c52..c2de0cf 100644
--- a/components/ui/IconSymbol.tsx
+++ b/components/ui/IconSymbol.tsx
@@ -19,6 +19,7 @@ const MAPPING = {
   'chevron.left.forwardslash.chevron.right': 'code',
   'chevron.right': 'chevron-right',
   'person.fill': 'person',
+  'person.3.fill': 'people',
 } as IconMapping;
 
 /**
diff --git a/constants/Agree.ts b/constants/Agree.ts
new file mode 100644
index 0000000..ba8f498
--- /dev/null
+++ b/constants/Agree.ts
@@ -0,0 +1,4 @@
+// 用户协议
+export const USER_AGREEMENT_URL = 'https://docs.qq.com/doc/DWkVYZ3RhRmZCaUdn?nlc=1';
+// 隐私政策
+export const PRIVACY_POLICY_URL = 'https://docs.qq.com/doc/DWkh2Y1Zxb21BVGNY?nlc=1';
\ No newline at end of file
diff --git a/hooks/useAuthGuard.ts b/hooks/useAuthGuard.ts
index d3d41a2..bf68749 100644
--- a/hooks/useAuthGuard.ts
+++ b/hooks/useAuthGuard.ts
@@ -1,7 +1,11 @@
+import AsyncStorage from '@react-native-async-storage/async-storage';
 import { usePathname, useRouter } from 'expo-router';
 import { useCallback } from 'react';
+import { Alert } from 'react-native';
 
-import { useAppSelector } from '@/hooks/redux';
+import { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { api } from '@/services/api';
+import { logout as logoutAction } from '@/store/userSlice';
 
 type RedirectParams = Record<string, string | number | boolean | undefined>;
 
@@ -12,6 +16,7 @@ type EnsureOptions = {
 
 export function useAuthGuard() {
   const router = useRouter();
+  const dispatch = useAppDispatch();
   const currentPath = usePathname();
   const token = useAppSelector((s) => (s as any)?.user?.token as string | null);
   const isLoggedIn = !!token;
@@ -52,11 +57,93 @@ export function useAuthGuard() {
     [ensureLoggedIn]
   );
 
+  // 退出登录功能
+  const handleLogout = useCallback(async () => {
+    try {
+      // 调用 Redux action 清除本地状态和缓存
+      await dispatch(logoutAction()).unwrap();
+      
+      // 跳转到登录页面
+      router.replace('/auth/login');
+    } catch (error) {
+      console.error('退出登录失败:', error);
+      Alert.alert('错误', '退出登录失败，请稍后重试');
+    }
+  }, [dispatch, router]);
+
+  // 带确认对话框的退出登录
+  const confirmLogout = useCallback(() => {
+    Alert.alert(
+      '确认退出',
+      '确定要退出当前账号吗？',
+      [
+        {
+          text: '取消',
+          style: 'cancel',
+        },
+        {
+          text: '确定',
+          style: 'default',
+          onPress: handleLogout,
+        },
+      ]
+    );
+  }, [handleLogout]);
+
+  // 注销账号功能
+  const handleDeleteAccount = useCallback(async () => {
+    try {
+      // 调用注销账号API
+      await api.delete('/api/users/delete-account');
+      
+      // 清除额外的本地数据
+      await AsyncStorage.multiRemove(['@user_personal_info', '@onboarding_completed']);
+      
+      // 执行退出登录逻辑
+      await dispatch(logoutAction()).unwrap();
+      
+      Alert.alert('账号已注销', '您的账号已成功注销', [
+        {
+          text: '确定',
+          onPress: () => router.replace('/auth/login'),
+        },
+      ]);
+    } catch (error: any) {
+      console.error('注销账号失败:', error);
+      const message = error?.message || '注销失败，请稍后重试';
+      Alert.alert('注销失败', message);
+    }
+  }, [dispatch, router]);
+
+  // 带确认对话框的注销账号
+  const confirmDeleteAccount = useCallback(() => {
+    Alert.alert(
+      '确认注销账号',
+      '此操作不可恢复，将删除您的账号及相关数据。确定继续吗？',
+      [
+        {
+          text: '取消',
+          style: 'cancel',
+        },
+        {
+          text: '确认注销',
+          style: 'destructive',
+          onPress: handleDeleteAccount,
+        },
+      ],
+      { cancelable: true }
+    );
+  }, [handleDeleteAccount]);
+
   return {
     isLoggedIn,
     ensureLoggedIn,
     pushIfAuthedElseLogin,
     guardHandler,
+    handleLogout,
+    confirmLogout,
+    handleDeleteAccount,
+    confirmDeleteAccount,
   } as const;
 }