diff --git a/backend/app/routers/messages.py b/backend/app/routers/messages.py
index f3a5a93..967d592 100644
--- a/backend/app/routers/messages.py
+++ b/backend/app/routers/messages.py
@@ -7,6 +7,7 @@ from app.dependencies import get_db, get_current_user
 from app.models.user import User
 from app.schemas.message import MessageSend, MessagePage, MarkReadRequest
 from app.services.message_service import MessageService
+from app.services.conversation_service import ConversationService
 
 router = APIRouter()
 
@@ -27,6 +28,30 @@ async def get_messages(
         raise HTTPException(status_code=403, detail=str(e))
 
 
+@router.get("/{conversation_id}/messages/search")
+async def search_messages(
+    conversation_id: str,
+    q: str = Query(..., min_length=1, max_length=200),
+    limit: int = Query(20, ge=1, le=50),
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """在会话内搜索消息（用户级）"""
+    # 验证成员身份
+    conv_service = ConversationService(db)
+    detail = await conv_service.get_conversation_detail(conversation_id, user.id)
+    if not detail:
+        raise HTTPException(status_code=403, detail="无权访问该会话")
+
+    service = MessageService(db)
+    results = await service.search_messages(
+        conversation_id=conversation_id,
+        keyword=q,
+        limit=limit,
+    )
+    return {"results": results}
+
+
 @router.put("/{conversation_id}/messages/{message_id}/read")
 async def mark_as_read(
     conversation_id: str,
diff --git a/backend/app/services/conversation_service.py b/backend/app/services/conversation_service.py
index c482daf..d423cdf 100644
--- a/backend/app/services/conversation_service.py
+++ b/backend/app/services/conversation_service.py
@@ -247,10 +247,18 @@ class ConversationService:
                 ConversationMember.left_at.is_(None),
             )
         )
+        member_rows = members_result.scalars().all()
+
+        # 批量获取所有成员用户信息
+        member_user_ids = [m.user_id for m in member_rows]
+        users_result = await self.db.execute(
+            select(User).where(User.id.in_(member_user_ids))
+        )
+        users_map = {u.id: u for u in users_result.scalars().all()}
+
         members = []
-        for m in members_result.scalars().all():
-            user_result = await self.db.execute(select(User).where(User.id == m.user_id))
-            user = user_result.scalars().first()
+        for m in member_rows:
+            user = users_map.get(m.user_id)
             if user:
                 members.append({
                     "id": m.id,
diff --git a/backend/app/services/friend_service.py b/backend/app/services/friend_service.py
index 31c74ac..7a8919d 100644
--- a/backend/app/services/friend_service.py
+++ b/backend/app/services/friend_service.py
@@ -102,12 +102,20 @@ class FriendService:
         result = await self.db.execute(
             select(Friend).where(Friend.user_id == user_id)
         )
+        friendships = result.scalars().all()
+        if not friendships:
+            return []
+
+        # 批量获取所有好友用户
+        friend_user_ids = [f.friend_user_id for f in friendships]
+        users_result = await self.db.execute(
+            select(User).where(User.id.in_(friend_user_ids))
+        )
+        users_map = {u.id: u for u in users_result.scalars().all()}
+
         friends = []
-        for friendship in result.scalars().all():
-            user_result = await self.db.execute(
-                select(User).where(User.id == friendship.friend_user_id)
-            )
-            user = user_result.scalars().first()
+        for friendship in friendships:
+            user = users_map.get(friendship.friend_user_id)
             if user:
                 friends.append({
                     "id": friendship.id,
@@ -128,10 +136,20 @@ class FriendService:
                 FriendRequest.status == "pending",
             ).order_by(FriendRequest.created_at.desc())
         )
+        requests_list = result.scalars().all()
+        if not requests_list:
+            return []
+
+        # 批量获取所有发送者
+        from_user_ids = list(set(r.from_user_id for r in requests_list))
+        users_result = await self.db.execute(
+            select(User).where(User.id.in_(from_user_ids))
+        )
+        users_map = {u.id: u for u in users_result.scalars().all()}
+
         requests = []
-        for req in result.scalars().all():
-            from_user = await self.db.execute(select(User).where(User.id == req.from_user_id))
-            fu = from_user.scalars().first()
+        for req in requests_list:
+            fu = users_map.get(req.from_user_id)
             requests.append({
                 "id": req.id,
                 "from_user_id": req.from_user_id,
diff --git a/backend/app/services/message_service.py b/backend/app/services/message_service.py
index 0110e29..8ab682a 100644
--- a/backend/app/services/message_service.py
+++ b/backend/app/services/message_service.py
@@ -77,29 +77,42 @@ class MessageService:
         has_more = len(messages) > limit
         messages = messages[:limit]
 
-        # 获取发送者信息
+        # 批量预加载发送者信息
         from app.models.user import User
+        sender_ids = list(set(m.sender_id for m in messages))
+        senders_result = await self.db.execute(
+            select(User).where(User.id.in_(sender_ids))
+        )
+        senders_map = {u.id: u for u in senders_result.scalars().all()}
+
+        # 批量预加载被引用消息
+        reply_to_ids = list(set(m.reply_to_id for m in messages if m.reply_to_id))
+        reply_msgs_map: dict[str, Message] = {}
+        if reply_to_ids:
+            reply_result = await self.db.execute(
+                select(Message).where(Message.id.in_(reply_to_ids))
+            )
+            reply_msgs_map = {m.id: m for m in reply_result.scalars().all()}
+
+        # 批量预加载被引用消息的发送者
+        reply_sender_ids = list(set(rm.sender_id for rm in reply_msgs_map.values()))
+        reply_senders_result = await self.db.execute(
+            select(User).where(User.id.in_(reply_sender_ids))
+        )
+        reply_senders_map = {u.id: u for u in reply_senders_result.scalars().all()}
+
         message_list = []
         for msg in reversed(messages):
-            sender_result = await self.db.execute(
-                select(User).where(User.id == msg.sender_id)
-            )
-            sender = sender_result.scalars().first()
+            sender = senders_map.get(msg.sender_id)
 
             # 获取被引用消息的信息
             reply_to_content = None
             reply_to_sender_name = None
             if msg.reply_to_id:
-                reply_msg_result = await self.db.execute(
-                    select(Message).where(Message.id == msg.reply_to_id)
-                )
-                reply_msg = reply_msg_result.scalars().first()
+                reply_msg = reply_msgs_map.get(msg.reply_to_id)
                 if reply_msg:
                     reply_to_content = reply_msg.content[:200] if reply_msg.content else None
-                    reply_sender_result = await self.db.execute(
-                        select(User).where(User.id == reply_msg.sender_id)
-                    )
-                    reply_sender = reply_sender_result.scalars().first()
+                    reply_sender = reply_senders_map.get(reply_msg.sender_id)
                     reply_to_sender_name = reply_sender.username if reply_sender else None
 
             message_list.append({
diff --git a/backend/app/services/moment_service.py b/backend/app/services/moment_service.py
index 5dc9cad..2513096 100644
--- a/backend/app/services/moment_service.py
+++ b/backend/app/services/moment_service.py
@@ -82,7 +82,7 @@ class MomentService:
         unique.sort(key=lambda x: x.created_at, reverse=True)
         unique = unique[:limit]
 
-        return [await self._moment_to_dict(m, user_id) for m in unique]
+        return await self._moments_to_dicts(unique, user_id)
 
     async def get_user_moments(self, user_id: str, viewer_id: str | None = None,
                                 cursor: str | None = None, limit: int = 20) -> list[dict]:
@@ -116,7 +116,7 @@ class MomentService:
                 if viewer_id == user_id:
                     filtered.append(m)
 
-        return [await self._moment_to_dict(m, viewer_id) for m in filtered]
+        return await self._moments_to_dicts(filtered, viewer_id)
 
     async def delete_moment(self, moment_id: str, user_id: str):
         """删除动态（仅作者）"""
@@ -243,56 +243,70 @@ class MomentService:
             raise ValueError("只能删除自己的评论")
         await self.db.delete(comment)
 
-    async def _moment_to_dict(self, moment: Moment, viewer_id: str | None) -> dict:
-        """将 Moment ORM 对象转为前端需要的字典"""
-        user_result = await self.db.execute(select(User).where(User.id == moment.user_id))
-        user = user_result.scalars().first()
+    async def _moments_to_dicts(self, moments: list[Moment], viewer_id: str | None) -> list[dict]:
+        """批量将 Moment ORM 对象转为前端需要的字典（优化 N+1 查询）"""
+        if not moments:
+            return []
 
-        # 点赞数
-        like_count_result = await self.db.execute(
-            select(func.count(MomentLike.id)).where(MomentLike.moment_id == moment.id)
+        moment_ids = [m.id for m in moments]
+        user_ids = list(set(m.user_id for m in moments))
+
+        # 批量获取所有作者
+        users_result = await self.db.execute(select(User).where(User.id.in_(user_ids)))
+        users_map = {u.id: u for u in users_result.scalars().all()}
+
+        # 批量获取点赞数
+        like_counts_result = await self.db.execute(
+            select(MomentLike.moment_id, func.count(MomentLike.id))
+            .where(MomentLike.moment_id.in_(moment_ids))
+            .group_by(MomentLike.moment_id)
         )
-        like_count = like_count_result.scalar() or 0
+        like_counts_map = dict(like_counts_result.all())
 
-        # 是否已点赞
-        is_liked = False
+        # 批量获取评论数
+        comment_counts_result = await self.db.execute(
+            select(MomentComment.moment_id, func.count(MomentComment.id))
+            .where(MomentComment.moment_id.in_(moment_ids))
+            .group_by(MomentComment.moment_id)
+        )
+        comment_counts_map = dict(comment_counts_result.all())
+
+        # 批量获取当前用户的点赞状态
+        liked_moment_ids = set()
         if viewer_id:
-            like_result = await self.db.execute(
-                select(MomentLike).where(
-                    MomentLike.moment_id == moment.id,
+            liked_result = await self.db.execute(
+                select(MomentLike.moment_id).where(
+                    MomentLike.moment_id.in_(moment_ids),
                     MomentLike.user_id == viewer_id,
                 )
             )
-            is_liked = like_result.scalars().first() is not None
+            liked_moment_ids = {r[0] for r in liked_result.all()}
 
-        # 评论数
-        comment_count_result = await self.db.execute(
-            select(func.count(MomentComment.id)).where(MomentComment.moment_id == moment.id)
-        )
-        comment_count = comment_count_result.scalar() or 0
+        result = []
+        for moment in moments:
+            user = users_map.get(moment.user_id)
+            images = []
+            if moment.images:
+                try:
+                    images = json.loads(moment.images)
+                except Exception:
+                    pass
 
-        # 解析图片
-        images = []
-        if moment.images:
-            try:
-                images = json.loads(moment.images)
-            except:
-                pass
-
-        return {
-            "id": moment.id,
-            "user_id": moment.user_id,
-            "username": user.username if user else "未知",
-            "nickname": user.nickname if user else None,
-            "avatar_url": user.avatar_url if user else None,
-            "content": moment.content,
-            "images": images,
-            "visibility": moment.visibility,
-            "like_count": like_count,
-            "is_liked": is_liked,
-            "comment_count": comment_count,
-            "created_at": moment.created_at,
-        }
+            result.append({
+                "id": moment.id,
+                "user_id": moment.user_id,
+                "username": user.username if user else "未知",
+                "nickname": user.nickname if user else None,
+                "avatar_url": user.avatar_url if user else None,
+                "content": moment.content,
+                "images": images,
+                "visibility": moment.visibility,
+                "like_count": like_counts_map.get(moment.id, 0),
+                "is_liked": moment.id in liked_moment_ids,
+                "comment_count": comment_counts_map.get(moment.id, 0),
+                "created_at": moment.created_at,
+            })
+        return result
 
     async def _get_friend_ids(self, user_id: str) -> list[str]:
         """获取好友ID列表"""
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index dcec1c2..d49a389 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -1,5 +1,5 @@
 <template>
-  <n-config-provider :theme-overrides="themeOverrides">
+  <n-config-provider :theme="uiStore.isDark ? darkTheme : undefined" :theme-overrides="themeOverrides">
     <n-notification-provider>
       <n-message-provider>
         <n-dialog-provider>
@@ -11,7 +11,11 @@
 </template>
 
 <script setup lang="ts">
+import { darkTheme } from 'naive-ui'
 import type { GlobalThemeOverrides } from 'naive-ui'
+import { useUiStore } from '@/stores/ui'
+
+const uiStore = useUiStore()
 
 /** 青绿色主题配置 */
 const themeOverrides: GlobalThemeOverrides = {
@@ -65,6 +69,6 @@ const themeOverrides: GlobalThemeOverrides = {
 <style>
 body {
   margin: 0;
-  background-color: #F5FBF9;
+  background-color: var(--color-bg);
 }
 </style>
diff --git a/frontend/src/api/chat.ts b/frontend/src/api/chat.ts
index bd96f00..74d1f56 100644
--- a/frontend/src/api/chat.ts
+++ b/frontend/src/api/chat.ts
@@ -37,4 +37,7 @@ export const chatApi = {
 
   deleteMessage: (conversationId: string, messageId: string) =>
     api.delete(`/conversations/${conversationId}/messages/${messageId}`),
+
+  searchMessages: (conversationId: string, keyword: string) =>
+    api.get(`/conversations/${conversationId}/messages/search`, { params: { q: keyword } }),
 }
diff --git a/frontend/src/assets/styles/global.css b/frontend/src/assets/styles/global.css
index e6c5fc2..faad8e7 100644
--- a/frontend/src/assets/styles/global.css
+++ b/frontend/src/assets/styles/global.css
@@ -35,6 +35,36 @@
   --color-bubble-other-text: #1A2E2A;
 }
 
+/* 深色模式 */
+[data-theme="dark"] {
+  --color-primary: #26A69A;
+  --color-primary-light: #4DB6AC;
+  --color-primary-lighter: #80CBC4;
+  --color-primary-lightest: #1A3B38;
+  --color-primary-dark: #009688;
+  --color-primary-darker: #00695C;
+
+  --color-bg: #0D1514;
+  --color-surface: #162220;
+  --color-surface-elevated: #1C2B28;
+
+  --color-text-primary: #E0F2F1;
+  --color-text-secondary: #9DB5AE;
+  --color-text-hint: #607D76;
+
+  --color-border: #2D4340;
+
+  --color-success: #66BB6A;
+  --color-warning: #FFA726;
+  --color-error: #EF5350;
+  --color-unread: #FF6B6B;
+
+  --color-bubble-self: #00796B;
+  --color-bubble-self-text: #E0F2F1;
+  --color-bubble-other: #1C2B28;
+  --color-bubble-other-text: #E0F2F1;
+}
+
 * {
   box-sizing: border-box;
 }
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index 8df8167..16960e0 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -69,11 +69,25 @@ const routes: RouteRecordRaw[] = [
       // 朋友圈
       {
         path: 'moments',
-        name: 'Moments',
-        components: {
-          secondary: () => import('@/views/moments/MomentsSidebar.vue'),
-          default: () => import('@/views/moments/MomentsFeedView.vue'),
-        },
+        children: [
+          {
+            path: '',
+            name: 'Moments',
+            components: {
+              secondary: () => import('@/views/moments/MomentsSidebar.vue'),
+              default: () => import('@/views/moments/MomentsFeedView.vue'),
+            },
+          },
+          {
+            path: 'user/:userId',
+            name: 'UserMoments',
+            meta: { hideSecondary: true },
+            components: {
+              secondary: () => import('@/views/moments/MomentsSidebar.vue'),
+              default: () => import('@/views/moments/UserMomentsView.vue'),
+            },
+          },
+        ],
       },
 
       // 设置
@@ -108,6 +122,14 @@ const routes: RouteRecordRaw[] = [
               default: () => import('@/views/settings/NotificationSettingsView.vue'),
             },
           },
+          {
+            path: 'appearance',
+            name: 'SettingsAppearance',
+            components: {
+              secondary: () => import('@/views/settings/SettingsSidebar.vue'),
+              default: () => import('@/views/settings/AppearanceSettingsView.vue'),
+            },
+          },
           {
             path: 'about',
             name: 'SettingsAbout',
diff --git a/frontend/src/stores/ui.ts b/frontend/src/stores/ui.ts
index fb8b58e..b4d5396 100644
--- a/frontend/src/stores/ui.ts
+++ b/frontend/src/stores/ui.ts
@@ -9,6 +9,12 @@ export const useUiStore = defineStore('ui', () => {
   const chatStyle = ref<ChatStyle>((localStorage.getItem('chatStyle') as ChatStyle) || 'bubble')
   const sidebarCollapsed = ref(false)
   const isMobile = ref(window.innerWidth < 768)
+  const isDark = ref(localStorage.getItem('theme') === 'dark')
+
+  // Apply theme on init
+  if (isDark.value) {
+    document.documentElement.setAttribute('data-theme', 'dark')
+  }
 
   function setLayoutMode(mode: LayoutMode) {
     layoutMode.value = mode
@@ -24,13 +30,25 @@ export const useUiStore = defineStore('ui', () => {
     sidebarCollapsed.value = !sidebarCollapsed.value
   }
 
+  function toggleDark() {
+    isDark.value = !isDark.value
+    localStorage.setItem('theme', isDark.value ? 'dark' : 'light')
+    document.documentElement.setAttribute('data-theme', isDark.value ? 'dark' : 'light')
+  }
+
+  function setDark(val: boolean) {
+    isDark.value = val
+    localStorage.setItem('theme', val ? 'dark' : 'light')
+    document.documentElement.setAttribute('data-theme', val ? 'dark' : 'light')
+  }
+
   // 监听窗口大小
   window.addEventListener('resize', () => {
     isMobile.value = window.innerWidth < 768
   })
 
   return {
-    layoutMode, chatStyle, sidebarCollapsed, isMobile,
-    setLayoutMode, setChatStyle, toggleSidebar,
+    layoutMode, chatStyle, sidebarCollapsed, isMobile, isDark,
+    setLayoutMode, setChatStyle, toggleSidebar, toggleDark, setDark,
   }
 })
diff --git a/frontend/src/views/chat/ChatRoomView.vue b/frontend/src/views/chat/ChatRoomView.vue
index 80869a4..de98c2d 100644
--- a/frontend/src/views/chat/ChatRoomView.vue
+++ b/frontend/src/views/chat/ChatRoomView.vue
@@ -13,6 +13,27 @@
         <span v-else class="member-count" :class="{ online: isOtherOnline }">{{ isOtherOnline ? '在线' : '离线' }}</span>
       </div>
       <n-button v-if="convDetail?.type === 'group'" quaternary size="small" @click="showGroupInfo = !showGroupInfo">群信息 ▾</n-button>
+      <n-button quaternary size="small" @click="toggleSearch" title="搜索">🔍</n-button>
+    </div>
+
+    <!-- 搜索栏 -->
+    <div v-if="showSearch" class="search-bar">
+      <n-input v-model:value="searchQuery" placeholder="搜索消息..." size="small" clearable
+        @keydown.enter.prevent="doSearch" style="flex: 1" />
+      <n-button size="tiny" type="primary" :loading="isSearching" :disabled="!searchQuery.trim()" @click="doSearch">搜索</n-button>
+      <n-button size="tiny" quaternary @click="showSearch = false; searchResults = []">✕</n-button>
+    </div>
+
+    <!-- 搜索结果 -->
+    <div v-if="searchResults.length > 0" class="search-results">
+      <div class="search-results-header">
+        <span>找到 {{ searchResults.length }} 条结果</span>
+      </div>
+      <div v-for="r in searchResults" :key="r.id" class="search-result-item" @click="scrollToMsg(r.id)">
+        <span class="result-sender">{{ r.sender_name }}</span>
+        <span class="result-content">{{ r.content?.slice(0, 80) }}{{ (r.content?.length || 0) > 80 ? '...' : '' }}</span>
+        <span class="result-time">{{ formatTime(r.created_at) }}</span>
+      </div>
     </div>
 
     <div class="chat-body">
@@ -73,10 +94,39 @@
       <!-- 右键菜单 -->
       <div v-if="ctxMenu.show" class="ctx-menu" :style="{ top: ctxMenu.y + 'px', left: ctxMenu.x + 'px' }">
         <div class="ctx-item" @click="replyToMsg">↩️ 回复</div>
+        <div class="ctx-item" @click="forwardMsg">↗️ 转发</div>
         <div class="ctx-item" @click="copyMsg">📋 复制</div>
         <div v-if="ctxMenu.msg?.sender_id === auth.user?.id && !ctxMenu.msg?._pending" class="ctx-item danger" @click="deleteMsg">🗑️ 删除</div>
       </div>
 
+      <!-- 转发选择器 -->
+      <div v-if="showForwardModal" class="modal-overlay" @click.self="showForwardModal = false">
+        <div class="forward-modal">
+          <div class="modal-header">
+            <h3>转发消息</h3>
+            <span class="close-btn" @click="showForwardModal = false">✕</span>
+          </div>
+          <div class="forward-body">
+            <div class="forward-preview">
+              <span class="forward-label">转发内容：</span>
+              <span class="forward-text">{{ forwardContent?.slice(0, 100) }}{{ (forwardContent?.length || 0) > 100 ? '...' : '' }}</span>
+            </div>
+            <div class="forward-section-label">选择会话</div>
+            <div v-for="conv in chatStore.conversations" :key="conv.id" class="forward-conv-item"
+              :class="{ selected: forwardTarget === conv.id }" @click="forwardTarget = conv.id">
+              <n-avatar :size="32" round :style="{ background: 'var(--color-primary)' }">
+                {{ (conv.name || '?')[0] }}
+              </n-avatar>
+              <span class="forward-conv-name">{{ conv.name }}</span>
+            </div>
+          </div>
+          <div class="modal-footer">
+            <n-button size="small" @click="showForwardModal = false">取消</n-button>
+            <n-button size="small" type="primary" :disabled="!forwardTarget" @click="doForward">发送</n-button>
+          </div>
+        </div>
+      </div>
+
       <GroupInfoPanel v-if="showGroupInfo && convDetail?.type === 'group'"
         :conversation-id="String(route.params.id)" :detail="convDetail"
         @close="showGroupInfo = false" @updated="loadDetail" />
@@ -110,6 +160,7 @@
 <script setup lang="ts">
 import { ref, reactive, computed, onMounted, nextTick, watch, onUnmounted } from 'vue'
 import { useRoute } from 'vue-router'
+import { useMessage } from 'naive-ui'
 import { useChatStore } from '@/stores/chat'
 import { useAuthStore } from '@/stores/auth'
 import { useUiStore } from '@/stores/ui'
@@ -122,6 +173,7 @@ import dayjs from 'dayjs'
 const EMOJIS = ['😀','😃','😄','😁','😆','😅','🤣','😂','🙂','😊','😇','🥰','😍','🤩','😘','😗','😋','😛','😜','🤪','😝','🤑','🤗','🤭','🤫','🤔','😐','😑','😶','😏','😒','🙄','😬','😮','😯','😲','😳','🥺','😦','😧','😨','😰','😥','😢','😭','😱','😖','😣','😞','😓','😩','😫','🥱','😤','😡','🤬','😈','👿','💀','☠️','💩','🤡','👻','👽','🤖','👋','🤚','🖐️','✋','🖖','👌','🤌','🤏','✌️','🤞','🤟','🤘','🤙','👍','👎','✊','👊','🤛','🤜','👏','🙌','🤝','🙏','💪','❤️','🧡','💛','💚','💙','💜','🖤','💔','❣️','💕','💞','💓','💗','💖','💘','💝','💟','🔥','✨','🌟','⭐','💫','🎉','🎊','🎈','🎁','🎀','🏆','🥇','🎯','🎮','🎵','🎶','🎸','🎵','✈️','🚀','🌈','☀️','🌙','⛅','❄️','🌸','🌺','🌻','🌹','🍀','🌿','🌳','🌴','🐱','🐶','🐼','🦊','🦁','🐻','🐰','🐨','🐸','🐳','🦋','🌺','🍳','☕','🍺','🍕','🍔','🍟','🍦','🍰','🎂','🍫','🍬','☕','🍷','🍸','🏢','🏠','🏡','⛪','🕌','🏰','🗼','🗽','⛲','⛰️','🌋','🏖️','🏜️','🏝️','🏟️','🎯','🎨','🎬','🎤','🎧','🎼','🎹','🥁','🎺','🎸','🎻','🎲','♟️','🎮','🕹️','🧩','🎰','🚗','🚕','🚙','🚌','🚎','🏎️','🚓','🚑','🚒','🚐','🛻','🚚','🚛','🚜','🛵','🏍️','🚲','🛴','🛹','🚏','🛣️','🛤️','🛢️','⛽','🚨','🚥','🚦','🛑','🚧','⚓','⛵','🛶','🚤','🛳️','⛽','✈️','🛫','🛬','🪂','💺','🚁','🚟','🚠','🚡','🛩️','🚀','🛸','🎆','🎇','🎈','🎉','🎊','🎋','🎍','🎎','🎏','🎐','🎑','🧧','🎀','🎁','🎗️','🎟️','🎫','🎖️','🏆','🏅','🥇','🥈','🥉','⚽','⚾','🥎','🏀','排球','🏈','🏉','🎾','🥏','🎳','🏏','🏑','🏒','🥍','🏓','🏸','🥊','🥋','🥅','⛳','⛸️','🎣','🤿','🎽','🎿','🛷','🥌','🎯','🪀','🪁','🎱','🔮','🪄','🧿','🎮','🕹️','🎰','🎲','♟️','🧩','🧸','🪅','🪆','🖼️','🎨','🧵','🪡','🧶','🪢']
 
 const route = useRoute()
+const message = useMessage()
 const chatStore = useChatStore()
 const auth = useAuthStore()
 const uiStore = useUiStore()
@@ -137,6 +189,14 @@ const showEmoji = ref(false)
 const isOtherOnline = ref(false)
 const replyingTo = ref<any>(null)
 const lastTypingSent = ref(0)
+const showSearch = ref(false)
+const searchQuery = ref('')
+const searchResults = ref<any[]>([])
+const isSearching = ref(false)
+const showForwardModal = ref(false)
+const forwardTarget = ref<string | null>(null)
+const forwardContent = ref('')
+const forwardSender = ref('')
 const emojis = EMOJIS
 
 // Typing indicator: get users typing in current conversation
@@ -303,6 +363,49 @@ function cancelReply() {
   replyingTo.value = null
 }
 
+function toggleSearch() {
+  showSearch.value = !showSearch.value
+  if (!showSearch.value) {
+    searchResults.value = []
+    searchQuery.value = ''
+  }
+}
+
+async function doSearch() {
+  if (!searchQuery.value.trim() || !chatStore.activeConversation) return
+  isSearching.value = true
+  try {
+    const { data } = await chatApi.searchMessages(chatStore.activeConversation, searchQuery.value.trim())
+    searchResults.value = data.results || []
+  } catch {
+    searchResults.value = []
+  } finally {
+    isSearching.value = false
+  }
+}
+
+function forwardMsg() {
+  if (!ctxMenu.msg) return
+  forwardContent.value = ctxMenu.msg.content || ''
+  forwardSender.value = ctxMenu.msg.sender_name || '用户'
+  forwardTarget.value = null
+  showForwardModal.value = true
+  ctxMenu.show = false
+}
+
+async function doForward() {
+  if (!forwardTarget.value || !forwardContent.value) return
+  const text = `[转发自 ${forwardSender.value}]: ${forwardContent.value}`
+  send('chat.send', {
+    conversation_id: forwardTarget.value,
+    content: text,
+    type: 'text',
+  })
+  message.success('已转发')
+  showForwardModal.value = false
+  forwardTarget.value = null
+}
+
 function scrollToMsg(msgId: string) {
   const el = messageListRef.value
   if (!el) return
@@ -466,12 +569,70 @@ function formatTimeDivider(time: string) {
 .reply-bar-close { cursor: pointer; color: var(--color-text-hint); font-size: 14px; padding: 2px; }
 .reply-bar-close:hover { color: var(--color-text-primary); }
 
+/* Search bar */
+.search-bar {
+  display: flex; align-items: center; gap: 8px; padding: 8px 20px;
+  border-bottom: 1px solid var(--color-border); background: var(--color-surface);
+}
+.search-results {
+  max-height: 240px; overflow-y: auto; border-bottom: 1px solid var(--color-border);
+  background: var(--color-surface-elevated);
+}
+.search-results-header {
+  padding: 6px 16px; font-size: 12px; color: var(--color-text-hint);
+  border-bottom: 1px solid var(--color-border); background: var(--color-surface);
+}
+.search-result-item {
+  display: flex; align-items: center; gap: 8px; padding: 8px 16px;
+  cursor: pointer; transition: background 0.15s; border-bottom: 1px solid var(--color-border);
+}
+.search-result-item:hover { background: var(--color-primary-lightest); }
+.result-sender { font-size: 12px; color: var(--color-primary); font-weight: 500; flex-shrink: 0; }
+.result-content { flex: 1; font-size: 13px; color: var(--color-text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.result-time { font-size: 11px; color: var(--color-text-hint); flex-shrink: 0; }
+
 /* Context menu */
 .ctx-menu { position: fixed; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,0.12); z-index: 999; min-width: 120px; overflow: hidden; }
 .ctx-item { padding: 8px 16px; font-size: 13px; cursor: pointer; transition: background 0.15s; }
 .ctx-item:hover { background: var(--color-primary-lightest); }
 .ctx-item.danger { color: #EF5350; }
 
+/* Forward modal */
+.modal-overlay {
+  position: fixed; inset: 0; background: rgba(0,0,0,0.4);
+  display: flex; align-items: center; justify-content: center; z-index: 1000;
+}
+.forward-modal {
+  width: 400px; max-height: 500px; background: var(--color-surface); border-radius: 16px;
+  box-shadow: 0 12px 40px rgba(0,0,0,0.15); display: flex; flex-direction: column;
+}
+.forward-modal .modal-header {
+  display: flex; justify-content: space-between; align-items: center;
+  padding: 20px 24px 16px; border-bottom: 1px solid var(--color-border);
+}
+.forward-modal .modal-header h3 { margin: 0; font-size: 18px; }
+.forward-modal .close-btn { cursor: pointer; font-size: 18px; color: var(--color-text-hint); }
+.forward-modal .close-btn:hover { color: var(--color-text-primary); }
+.forward-body { flex: 1; overflow-y: auto; padding: 16px 24px; }
+.forward-preview {
+  padding: 10px 12px; background: var(--color-primary-lightest); border-radius: 8px;
+  margin-bottom: 12px; border-left: 3px solid var(--color-primary);
+}
+.forward-label { font-size: 12px; color: var(--color-text-hint); display: block; margin-bottom: 4px; }
+.forward-text { font-size: 13px; color: var(--color-text-primary); line-height: 1.5; }
+.forward-section-label { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 8px; font-weight: 500; }
+.forward-conv-item {
+  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px;
+  cursor: pointer; transition: background 0.15s;
+}
+.forward-conv-item:hover { background: var(--color-primary-lightest); }
+.forward-conv-item.selected { background: var(--color-primary-lightest); border: 1px solid var(--color-primary); }
+.forward-conv-name { font-size: 14px; }
+.forward-modal .modal-footer {
+  display: flex; justify-content: flex-end; gap: 8px;
+  padding: 12px 24px; border-top: 1px solid var(--color-border);
+}
+
 /* Input bar */
 .input-bar { position: relative; display: flex; align-items: flex-end; gap: 8px; padding: 12px 20px; border-top: 1px solid var(--color-border); background: var(--color-surface); }
 .input-actions { display: flex; gap: 4px; padding-bottom: 4px; }
diff --git a/frontend/src/views/moments/MomentCard.vue b/frontend/src/views/moments/MomentCard.vue
index edebe91..bdd1732 100644
--- a/frontend/src/views/moments/MomentCard.vue
+++ b/frontend/src/views/moments/MomentCard.vue
@@ -2,11 +2,12 @@
   <div class="moment-card">
     <!-- 头部：头像 + 用户名 + 时间 + 删除 -->
     <div class="moment-header">
-      <n-avatar :size="40" round :style="{ background: 'var(--color-primary)' }">
+      <n-avatar :size="40" round :style="{ background: 'var(--color-primary)', cursor: isMine ? 'default' : 'pointer' }"
+        @click="goToUserMoments">
         {{ (moment.nickname || moment.username || '?')[0] }}
       </n-avatar>
       <div class="header-info">
-        <span class="author-name">{{ moment.nickname || moment.username }}</span>
+        <span class="author-name" :style="{ cursor: isMine ? 'default' : 'pointer' }" @click="goToUserMoments">{{ moment.nickname || moment.username }}</span>
         <span class="post-time">{{ formatTime(moment.created_at) }}</span>
       </div>
       <span v-if="isMine" class="delete-btn" title="删除" @click="handleDelete">🗑️</span>
@@ -66,6 +67,7 @@
 
 <script setup lang="ts">
 import { ref, computed, watch } from 'vue'
+import { useRouter } from 'vue-router'
 import { momentsApi } from '@/api/moments'
 import { useAuthStore } from '@/stores/auth'
 import dayjs from 'dayjs'
@@ -83,6 +85,7 @@ const emit = defineEmits<{
 }>()
 
 const auth = useAuthStore()
+const router = useRouter()
 const showComments = ref(false)
 const comments = ref<any[]>([])
 const commentText = ref('')
@@ -90,6 +93,12 @@ const replyTarget = ref<any>(null)
 
 const isMine = computed(() => props.moment.user_id === auth.user?.id)
 
+function goToUserMoments() {
+  if (props.moment.user_id && !isMine.value) {
+    router.push(`/moments/user/${props.moment.user_id}`)
+  }
+}
+
 watch(showComments, async (val) => {
   if (val && comments.value.length === 0) {
     try {
diff --git a/frontend/src/views/moments/UserMomentsView.vue b/frontend/src/views/moments/UserMomentsView.vue
new file mode 100644
index 0000000..b0244ee
--- /dev/null
+++ b/frontend/src/views/moments/UserMomentsView.vue
@@ -0,0 +1,117 @@
+<template>
+  <div class="user-moments">
+    <div class="panel-header">
+      <n-button quaternary circle size="small" @click="$router.push('/moments')">←</n-button>
+      <h3 class="panel-title">{{ userName }} 的朋友圈</h3>
+    </div>
+    <div class="moments-content">
+      <div v-if="isLoading" class="loading">加载中...</div>
+      <div v-else-if="moments.length === 0" class="empty">
+        <div style="font-size: 48px">🌿</div>
+        <p style="color: var(--color-text-secondary)">还没有动态</p>
+      </div>
+      <div v-else class="moment-list">
+        <MomentCard
+          v-for="moment in moments"
+          :key="moment.id"
+          :moment="moment"
+          @toggle-like="handleToggleLike"
+          @comment="handleComment"
+          @delete="handleDelete"
+        />
+      </div>
+      <div v-if="hasMore && moments.length > 0" class="load-more">
+        <n-button text size="small" @click="loadMore">加载更多</n-button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useRoute } from 'vue-router'
+import { useMessage } from 'naive-ui'
+import { momentsApi } from '@/api/moments'
+import MomentCard from './MomentCard.vue'
+
+const route = useRoute()
+const message = useMessage()
+
+const moments = ref<any[]>([])
+const isLoading = ref(false)
+const hasMore = ref(true)
+const cursor = ref<string | null>(null)
+const userName = ref('用户')
+
+onMounted(() => {
+  const userId = route.params.userId as string
+  if (userId) fetchUserMoments(userId, true)
+})
+
+async function fetchUserMoments(userId: string, refresh = false) {
+  if (isLoading.value) return
+  isLoading.value = true
+  try {
+    const cur = refresh ? undefined : cursor.value || undefined
+    const { data } = await momentsApi.getUserMoments(userId, cur)
+    if (refresh) {
+      moments.value = data
+    } else {
+      moments.value = [...moments.value, ...data]
+    }
+    if (data.length > 0) {
+      cursor.value = data[data.length - 1].id
+      if (!userName.value || userName.value === '用户') {
+        userName.value = data[0].nickname || data[0].username || '用户'
+      }
+    }
+    if (data.length < 20) hasMore.value = false
+  } catch {
+    message.error('加载失败')
+  } finally {
+    isLoading.value = false
+  }
+}
+
+function loadMore() {
+  const userId = route.params.userId as string
+  fetchUserMoments(userId)
+}
+
+async function handleToggleLike(momentId: string) {
+  try {
+    const { data } = await momentsApi.toggleLike(momentId)
+    const m = moments.value.find((m) => m.id === momentId)
+    if (m) {
+      m.is_liked = data.is_liked
+      m.like_count = data.is_liked ? m.like_count + 1 : Math.max(0, m.like_count - 1)
+    }
+  } catch { message.error('操作失败') }
+}
+
+async function handleComment(momentId: string, content: string) {
+  message.success('评论成功')
+}
+
+async function handleDelete(momentId: string) {
+  try {
+    await momentsApi.deleteMoment(momentId)
+    moments.value = moments.value.filter((m) => m.id !== momentId)
+    message.success('已删除')
+  } catch { message.error('删除失败') }
+}
+</script>
+
+<style scoped>
+.user-moments { display: flex; flex-direction: column; height: 100%; }
+.panel-header {
+  display: flex; align-items: center; gap: 8px;
+  padding: 16px; border-bottom: 1px solid var(--color-border);
+}
+.panel-title { margin: 0; font-size: 16px; font-weight: 600; }
+.moments-content { flex: 1; overflow-y: auto; padding: 12px; }
+.loading { text-align: center; padding: 40px; color: var(--color-text-hint); }
+.empty { text-align: center; padding: 60px 20px; }
+.moment-list { display: flex; flex-direction: column; gap: 12px; }
+.load-more { text-align: center; padding: 12px; }
+</style>
diff --git a/frontend/src/views/settings/AppearanceSettingsView.vue b/frontend/src/views/settings/AppearanceSettingsView.vue
new file mode 100644
index 0000000..f2b7cbd
--- /dev/null
+++ b/frontend/src/views/settings/AppearanceSettingsView.vue
@@ -0,0 +1,135 @@
+<template>
+  <div class="appearance-settings">
+    <h2 class="page-title">外观设置</h2>
+
+    <!-- 深色模式 -->
+    <div class="setting-section">
+      <div class="setting-row">
+        <div class="setting-info">
+          <span class="setting-label">深色模式</span>
+          <span class="setting-desc">切换深色/浅色主题</span>
+        </div>
+        <n-switch :value="uiStore.isDark" @update:value="uiStore.toggleDark()" />
+      </div>
+    </div>
+
+    <!-- 会话列表布局 -->
+    <div class="setting-section">
+      <div class="setting-row vertical">
+        <span class="setting-label">会话列表布局</span>
+        <n-button-group size="small">
+          <n-button :type="uiStore.layoutMode === 'list' ? 'primary' : 'default'" @click="uiStore.setLayoutMode('list')">
+            列表
+          </n-button>
+          <n-button :type="uiStore.layoutMode === 'card' ? 'primary' : 'default'" @click="uiStore.setLayoutMode('card')">
+            卡片
+          </n-button>
+          <n-button :type="uiStore.layoutMode === 'waterfall' ? 'primary' : 'default'" @click="uiStore.setLayoutMode('waterfall')">
+            瀑布流
+          </n-button>
+        </n-button-group>
+      </div>
+      <div class="preview-area">
+        <div class="layout-preview" :class="uiStore.layoutMode">
+          <div v-for="i in 3" :key="i" class="preview-item">
+            <div class="preview-avatar"></div>
+            <div class="preview-lines">
+              <div class="preview-line long"></div>
+              <div class="preview-line short"></div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- 聊天气泡风格 -->
+    <div class="setting-section">
+      <div class="setting-row vertical">
+        <span class="setting-label">聊天气泡风格</span>
+        <n-button-group size="small">
+          <n-button :type="uiStore.chatStyle === 'bubble' ? 'primary' : 'default'" @click="uiStore.setChatStyle('bubble')">
+            气泡
+          </n-button>
+          <n-button :type="uiStore.chatStyle === 'classic' ? 'primary' : 'default'" @click="uiStore.setChatStyle('classic')">
+            经典
+          </n-button>
+          <n-button :type="uiStore.chatStyle === 'compact' ? 'primary' : 'default'" @click="uiStore.setChatStyle('compact')">
+            紧凑
+          </n-button>
+        </n-button-group>
+      </div>
+      <div class="preview-area">
+        <div class="chat-preview" :class="uiStore.chatStyle">
+          <div class="chat-msg other">
+            <div class="chat-avatar"></div>
+            <div class="chat-bubble">你好！</div>
+          </div>
+          <div class="chat-msg own">
+            <div class="chat-bubble">嗨，最近怎么样？</div>
+            <div class="chat-avatar"></div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useUiStore } from '@/stores/ui'
+
+const uiStore = useUiStore()
+</script>
+
+<style scoped>
+.appearance-settings { padding: 24px; max-width: 600px; }
+.page-title { font-size: 20px; font-weight: 600; margin: 0 0 24px; color: var(--color-text-primary); }
+
+.setting-section {
+  margin-bottom: 24px; padding: 16px; background: var(--color-surface);
+  border-radius: 12px; border: 1px solid var(--color-border);
+}
+.setting-row {
+  display: flex; align-items: center; justify-content: space-between; gap: 12px;
+}
+.setting-row.vertical { flex-direction: column; align-items: flex-start; gap: 8px; }
+.setting-info { display: flex; flex-direction: column; gap: 2px; }
+.setting-label { font-size: 14px; font-weight: 500; color: var(--color-text-primary); }
+.setting-desc { font-size: 12px; color: var(--color-text-hint); }
+
+/* Layout preview */
+.preview-area { margin-top: 12px; padding: 12px; background: var(--color-bg); border-radius: 8px; }
+.layout-preview { display: flex; flex-direction: column; gap: 6px; }
+.layout-preview .preview-item {
+  display: flex; align-items: center; gap: 8px; padding: 6px 8px;
+  background: var(--color-surface); border-radius: 6px;
+}
+.layout-preview.card .preview-item { padding: 10px; border: 1px solid var(--color-border); border-radius: 10px; }
+.layout-preview.waterfall { flex-direction: row; flex-wrap: wrap; }
+.layout-preview.waterfall .preview-item { width: calc(50% - 3px); }
+.preview-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--color-primary-lighter); flex-shrink: 0; }
+.preview-lines { flex: 1; }
+.preview-line { height: 6px; border-radius: 3px; background: var(--color-border); margin-bottom: 4px; }
+.preview-line:last-child { margin-bottom: 0; }
+.preview-line.long { width: 70%; }
+.preview-line.short { width: 40%; }
+
+/* Chat preview */
+.chat-preview { display: flex; flex-direction: column; gap: 8px; }
+.chat-msg { display: flex; align-items: flex-start; gap: 6px; }
+.chat-msg.own { justify-content: flex-end; }
+.chat-avatar { width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary-lighter); flex-shrink: 0; }
+.chat-bubble {
+  padding: 6px 10px; font-size: 12px; line-height: 1.4; max-width: 60%;
+}
+.chat-preview.bubble .chat-bubble {
+  border-radius: 12px;
+}
+.chat-preview.bubble .other .chat-bubble { background: var(--color-bubble-other); color: var(--color-bubble-other-text); border-bottom-left-radius: 4px; }
+.chat-preview.bubble .own .chat-bubble { background: var(--color-bubble-self); color: var(--color-bubble-self-text); border-bottom-right-radius: 4px; }
+.chat-preview.classic .chat-bubble {
+  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 4px;
+}
+.chat-preview.compact .chat-bubble {
+  background: transparent; padding: 2px 0; border-radius: 0; font-size: 11px;
+}
+</style>
diff --git a/frontend/src/views/settings/SettingsSidebar.vue b/frontend/src/views/settings/SettingsSidebar.vue
index 074f79d..58eff91 100644
--- a/frontend/src/views/settings/SettingsSidebar.vue
+++ b/frontend/src/views/settings/SettingsSidebar.vue
@@ -16,6 +16,10 @@
         <span class="menu-icon">🔔</span>
         <span class="menu-label">通知设置</span>
       </router-link>
+      <router-link to="/settings/appearance" class="menu-item" active-class="active">
+        <span class="menu-icon">🎨</span>
+        <span class="menu-label">外观设置</span>
+      </router-link>
       <router-link to="/settings/about" class="menu-item" active-class="active">
         <span class="menu-icon">ℹ️</span>
         <span class="menu-label">关于青叶</span>