diff --git a/dashboard/src/App.vue b/dashboard/src/App.vue
index f94b65e..be2e22a 100644
--- a/dashboard/src/App.vue
+++ b/dashboard/src/App.vue
@@ -1,35 +1,26 @@
 <script setup>
-import { ref } from 'vue'
 import { useAuth } from './utils/useAuth.js'
-import AppSidebar from './components/AppSidebar.vue'
+import AppHeader from './components/AppHeader.vue'
 
 const { isLoggedIn } = useAuth()
-const sidebarCollapsed = ref(false)
 </script>
 
 <template>
-  <div id="app" :class="{ 'sidebar-collapsed': sidebarCollapsed }">
-    <AppSidebar v-if="isLoggedIn" :collapsed="sidebarCollapsed" @toggle="sidebarCollapsed = !sidebarCollapsed" />
-    <main class="main-content" :class="{ 'no-sidebar': !isLoggedIn }">
+  <div id="app">
+    <AppHeader v-if="isLoggedIn" />
+    <main class="main-content">
       <router-view />
     </main>
   </div>
 </template>
 
 <style scoped>
-#app { display: flex; min-height: 100vh; background: var(--bg); }
+#app { 
+  min-height: 100vh; 
+  background: var(--bg); 
+}
 .main-content { 
-  flex: 1; 
-  margin-left: 260px; 
   padding: 0; 
   min-height: 100vh; 
-  transition: margin-left 0.3s; 
-  overflow-y: auto; 
-}
-.main-content.no-sidebar { margin-left: 0; }
-.sidebar-collapsed .main-content { margin-left: 70px; }
-@media (max-width: 768px) {
-  .main-content { margin-left: 70px; }
-  .sidebar-collapsed .main-content { margin-left: 0; }
 }
 </style>
diff --git a/dashboard/src/components/AppHeader.vue b/dashboard/src/components/AppHeader.vue
new file mode 100644
index 0000000..887db13
--- /dev/null
+++ b/dashboard/src/components/AppHeader.vue
@@ -0,0 +1,187 @@
+<template>
+  <header class="app-header">
+    <div class="header-left">
+      <div class="brand">
+        <div class="brand-icon">
+          <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="m12 3-1.912 5.813a2 2 0 0 1-1.275 1.275L3 12l5.813 1.912a2 2 0 0 1 1.275 1.275L12 21l1.912-5.813a2 2 0 0 1 1.275-1.275L21 12l-5.813-1.912a2 2 0 0 1-1.275-1.275L12 3Z"/>
+          </svg>
+        </div>
+        <span class="brand-text">Luxx</span>
+      </div>
+    </div>
+    
+    <nav class="header-nav">
+      <router-link v-for="item in navItems" :key="item.path" :to="item.path" class="nav-link" active-class="active">
+        <span class="nav-icon" v-html="item.icon"></span>
+      </router-link>
+    </nav>
+    
+    <div class="header-right">
+      <button class="header-btn" @click="toggleTheme" :title="isDark ? '切换到浅色模式' : '切换到暗色模式'">
+        <svg v-if="!isDark" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path>
+        </svg>
+        <svg v-else width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <circle cx="12" cy="12" r="5"></circle>
+          <line x1="12" y1="1" x2="12" y2="3"></line>
+          <line x1="12" y1="21" x2="12" y2="23"></line>
+          <line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
+          <line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
+          <line x1="1" y1="12" x2="3" y2="12"></line>
+          <line x1="21" y1="12" x2="23" y2="12"></line>
+          <line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
+          <line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
+        </svg>
+      </button>
+    </div>
+  </header>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue'
+
+const isDark = ref(localStorage.getItem('theme') === 'dark')
+
+const toggleTheme = () => {
+  isDark.value = !isDark.value
+  if (isDark.value) {
+    document.documentElement.setAttribute('data-theme', 'dark')
+    localStorage.setItem('theme', 'dark')
+  } else {
+    document.documentElement.removeAttribute('data-theme')
+    localStorage.setItem('theme', 'light')
+  }
+}
+
+onMounted(() => {
+  if (localStorage.getItem('theme') === 'dark') {
+    document.documentElement.setAttribute('data-theme', 'dark')
+    isDark.value = true
+  }
+})
+
+const navItems = [
+  { 
+    path: '/', 
+    icon: `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path><polyline points="9 22 9 12 15 12 15 22"></polyline></svg>`
+  },
+  { 
+    path: '/conversations', 
+    icon: `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"></path></svg>`
+  },
+  { 
+    path: '/tools', 
+    icon: `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"></path></svg>`
+  },
+  { 
+    path: '/settings', 
+    icon: `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="3"></circle><path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1 0 2.83 2 2 0 0 1-2.83 0l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-2 2 2 2 0 0 1-2-2v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83 0 2 2 0 0 1 0-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1-2-2 2 2 0 0 1 2-2h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 0-2.83 2 2 0 0 1 2.83 0l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 2-2 2 2 0 0 1 2 2v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 0 2 2 0 0 1 0 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 2 2 2 2 0 0 1-2 2h-.09a1.65 1.65 0 0 0-1.51 1z"></path></svg>`
+  }
+]
+</script>
+
+<style scoped>
+.app-header {
+  height: 56px;
+  background: var(--bg-primary);
+  border-bottom: 1px solid var(--border-light);
+  display: flex;
+  align-items: center;
+  padding: 0 1rem;
+  position: sticky;
+  top: 0;
+  z-index: 100;
+}
+
+.header-left {
+  display: flex;
+  align-items: center;
+  margin-right: 1.5rem;
+}
+
+.brand {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.brand-icon {
+  width: 28px;
+  height: 28px;
+  background: linear-gradient(135deg, var(--accent-primary), #6366f1);
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: white;
+}
+
+.brand-text {
+  font-size: 1rem;
+  font-weight: 700;
+  color: var(--text-primary);
+}
+
+.header-nav {
+  display: flex;
+  gap: 0.25rem;
+  flex: 1;
+}
+
+.nav-link {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  padding: 0.4rem 0.75rem;
+  border-radius: 6px;
+  text-decoration: none;
+  color: var(--text-secondary);
+  font-size: 0.85rem;
+  font-weight: 500;
+  transition: all 0.2s;
+}
+.nav-link:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+}
+.nav-link.active {
+  background: var(--accent-primary-light);
+  color: var(--accent-primary);
+}
+.nav-icon {
+  display: flex;
+  align-items: center;
+}
+
+.header-right {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-left: auto;
+}
+
+.header-btn {
+  width: 32px;
+  height: 32px;
+  border-radius: 6px;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-light);
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--text-secondary);
+  transition: all 0.2s;
+}
+.header-btn:hover {
+  border-color: var(--accent-primary);
+  color: var(--accent-primary);
+}
+
+@media (max-width: 768px) {
+  .brand-text {
+    display: none;
+  }
+}
+</style>
diff --git a/dashboard/src/components/AppSidebar.vue b/dashboard/src/components/AppSidebar.vue
deleted file mode 100644
index b698df3..0000000
--- a/dashboard/src/components/AppSidebar.vue
+++ /dev/null
@@ -1,125 +0,0 @@
-<template>
-  <aside class="sidebar" :class="{ collapsed }">
-    <div class="sidebar-header">
-      <button v-if="collapsed" @click="$emit('toggle')" class="expand-btn" title="展开侧栏">
-        ✨
-      </button>
-      <template v-else>
-        <div class="brand">
-          <span class="brand-text">✨ Luxx</span>
-        </div>
-        <button @click="$emit('toggle')" class="toggle-btn" title="收起侧栏">
-          <svg width="16" height="16" viewBox="0 0 16 16" fill="none">
-            <path d="M10 12L6 8L10 4" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
-          </svg>
-        </button>
-      </template>
-    </div>
-
-    <nav class="sidebar-nav">
-      <router-link v-for="item in navItems" :key="item.path" :to="item.path" class="nav-item" active-class="active">
-        <span class="nav-text">{{ item.label }}</span>
-      </router-link>
-    </nav>
-  </aside>
-</template>
-
-<script setup>
-defineProps({ collapsed: Boolean })
-defineEmits(['toggle'])
-
-const navItems = [
-  { path: '/', label: '首页' },
-  { path: '/conversations', label: '会话' },
-  { path: '/tools', label: '工具' },
-  { path: '/settings', label: '设置' }
-]
-</script>
-
-<style scoped>
-.sidebar {
-  width: var(--sidebar-width, 260px);
-  height: 100vh;
-  background: var(--bg);
-  border-right: 1px solid var(--border);
-  display: flex;
-  flex-direction: column;
-  position: fixed;
-  left: 0;
-  top: 0;
-  z-index: 100;
-  transition: width 0.3s ease;
-}
-.sidebar.collapsed { width: var(--sidebar-collapsed-width, 70px); }
-.sidebar-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 1.25rem;
-  border-bottom: 1px solid var(--border);
-  min-height: 60px;
-}
-.sidebar.collapsed .sidebar-header {
-  justify-content: center;
-}
-.brand { display: flex; align-items: center; gap: 0.75rem; }
-.brand-text {
-  font-size: 1.5rem; font-weight: 700;
-  color: var(--accent);
-  white-space: nowrap;
-}
-.toggle-btn {
-  background: var(--code-bg);
-  border: none;
-  border-radius: 6px;
-  padding: 0.5rem;
-  cursor: pointer;
-  color: var(--text);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
-.toggle-btn:hover { color: var(--accent); }
-.expand-btn {
-  background: var(--accent);
-  border: none;
-  border-radius: 8px;
-  padding: 0.25rem 0.5rem;
-  cursor: pointer;
-  color: white;
-  font-size: 1rem;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  margin: 0 auto;
-  transition: transform 0.2s;
-}
-.expand-btn:hover { transform: scale(1.1); }
-.sidebar-nav { flex: 1; padding: 1rem 0.75rem; overflow-y: auto; }
-.nav-item {
-  display: flex;
-  align-items: center;
-  gap: 0.875rem;
-  padding: 0.875rem 1rem;
-  border-radius: 10px;
-  text-decoration: none;
-  color: var(--text);
-  margin-bottom: 0.25rem;
-  transition: all 0.2s;
-}
-.nav-item:hover { background: var(--code-bg); color: var(--text-h); }
-.nav-item.active { background: var(--accent-bg); color: var(--accent); }
-.nav-text {
-  font-size: 0.95rem;
-  font-weight: 500;
-  white-space: nowrap;
-}
-.collapsed .nav-text { display: none; }
-.collapsed .nav-item { display: none; }
-
-@media (max-width: 768px) {
-  .sidebar { width: 0 !important; overflow: hidden; }
-  .sidebar-header { display: none; }
-  .sidebar-nav { display: none; }
-}
-</style>
diff --git a/dashboard/src/style.css b/dashboard/src/style.css
index 1d60870..195e5da 100644
--- a/dashboard/src/style.css
+++ b/dashboard/src/style.css
@@ -48,7 +48,6 @@
 
   /* 滚动条颜色 */
   --scrollbar-thumb: rgba(0, 0, 0, 0.08);
-  --scrollbar-thumb-sidebar: rgba(0, 0, 0, 0.1);
 
   /* 遮罩背景 */
   --overlay-bg: rgba(0, 0, 0, 0.3);
@@ -120,7 +119,6 @@
   --danger-bg: rgba(248, 113, 113, 0.15);
 
   --scrollbar-thumb: rgba(255, 255, 255, 0.1);
-  --scrollbar-thumb-sidebar: rgba(255, 255, 255, 0.15);
 
   --overlay-bg: rgba(0, 0, 0, 0.6);
   --avatar-gradient: linear-gradient(135deg, #3b82f6, #60a5fa);
diff --git a/dashboard/src/views/ConversationsView.vue b/dashboard/src/views/ConversationsView.vue
index a57312c..7b52036 100644
--- a/dashboard/src/views/ConversationsView.vue
+++ b/dashboard/src/views/ConversationsView.vue
@@ -1,46 +1,89 @@
 <template>
   <div class="page-container conversations">
-    <div class="page-header">
-      <h1>会话管理</h1>
-      <button @click="showModal = true" class="btn-primary">+ 新建会话</button>
-    </div>
-
-    <div v-if="loading" class="loading"><div class="spinner"></div>加载中...</div>
-    <div v-else-if="error" class="error-msg">{{ error }} <button @click="fetchData">重试</button></div>
-    <div v-else-if="!list.length" class="empty-card">暂无会话，点击上方按钮新建</div>
-    
-    <div v-else class="table-container">
-      <table class="conv-table">
-        <thead>
-          <tr>
-            <th>标题</th>
-            <th>模型</th>
-            <th>修改时间</th>
-            <th class="action-col">操作</th>
-          </tr>
-        </thead>
-        <tbody>
-          <tr v-for="c in list" :key="c.id" @click="$router.push(`/conversations/${c.id}`)">
-            <td class="title-col">
-              <div class="conv-title">{{ c.title || c.first_message || '未命名会话' }}</div>
-            </td>
-            <td class="model-col">{{ c.model || '-' }}</td>
-            <td class="time-col">{{ formatDate(c.updated_at) }}</td>
-            <td class="action-col" @click.stop>
-              <button @click="editTitle(c)" class="btn-edit">重命名</button>
-              <button @click="deleteConv(c)" class="btn-delete">删除</button>
-            </td>
-          </tr>
-        </tbody>
-      </table>
-    </div>
-
-    <div v-if="totalPages > 1" class="pagination">
-      <button @click="page--; fetchData()" :disabled="page === 1">上一页</button>
-      <span>{{ page }} / {{ totalPages }}</span>
-      <button @click="page++; fetchData()" :disabled="page >= totalPages">下一页</button>
+    <div class="conv-layout">
+      <!-- 左侧会话列表 -->
+      <aside class="conv-sidebar">
+        <div v-if="loading" class="loading"><div class="spinner-small"></div>加载中...</div>
+        <div v-else-if="error" class="error-msg">{{ error }} <button @click="fetchData">重试</button></div>
+        <div v-else-if="!list.length" class="empty-sidebar">暂无会话</div>
+        
+        <div v-else class="conv-list">
+          <div 
+            v-for="c in list" 
+            :key="c.id" 
+            class="conv-item"
+            :class="{ active: selectedId === c.id }"
+            @click="selectConv(c)"
+          >
+            <div class="conv-item-header">
+              <span class="conv-item-title">{{ c.title || c.first_message || '未命名会话' }}</span>
+              <span class="conv-item-time">{{ formatDate(c.updated_at) }}</span>
+            </div>
+            <div class="conv-item-meta">
+              <span class="conv-item-model">{{ c.model || '-' }}</span>
+              <div class="conv-item-actions" @click.stop>
+                <button @click="editTitle(c)" class="btn-icon" title="重命名">✏️</button>
+                <button @click="deleteConv(c)" class="btn-icon btn-delete-icon" title="删除">🗑️</button>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <div v-if="totalPages > 1" class="sidebar-pagination">
+          <button @click="page--; fetchData()" :disabled="page === 1" class="btn-page">‹</button>
+          <span>{{ page }} / {{ totalPages }}</span>
+          <button @click="page++; fetchData()" :disabled="page >= totalPages" class="btn-page">›</button>
+        </div>
+      </aside>
+
+      <!-- 右侧内容区 - 对话界面 -->
+      <main class="conv-content">
+        <div v-if="!selectedConv" class="empty-content">
+          <div class="empty-icon">💬</div>
+          <p>选择一个会话查看</p>
+        </div>
+        <div v-else class="chat-view-container">
+          <div class="chat-messages" ref="messagesContainer">
+            <div v-if="loadingMessages" class="loading-messages">
+              <div class="spinner-small"></div>
+              <span>加载中...</span>
+            </div>
+            <div v-else-if="convMessages.length">
+              <div v-for="msg in convMessages" :key="msg.id" class="chat-message" :class="msg.role">
+                <div class="message-avatar">{{ msg.role === 'user' ? '👤' : '🤖' }}</div>
+                <div class="message-content">
+                  <!-- 工具调用步骤显示 -->
+                  <ProcessBlock 
+                    v-if="msg.process_steps && msg.process_steps.length" 
+                    :process-steps="msg.process_steps" 
+                  />
+                  <!-- 消息内容（Markdown渲染） -->
+                  <div class="message-text" v-html="renderMsgContent(msg)"></div>
+                </div>
+              </div>
+            </div>
+            <div v-else class="chat-empty">
+              <p>暂无消息，开始对话吧</p>
+            </div>
+          </div>
+          <div class="chat-input-area">
+            <input 
+              v-model="newMessage" 
+              @keyup.enter="sendMessage" 
+              type="text" 
+              placeholder="输入消息..." 
+              class="chat-input" 
+              :disabled="sending"
+            />
+            <button @click="sendMessage" class="btn-send" :disabled="sending || !newMessage.trim()">
+              {{ sending ? '发送中...' : '发送' }}
+            </button>
+          </div>
+        </div>
+      </main>
     </div>
 
+    <!-- 新建会话弹窗 -->
     <div v-if="showModal" class="modal-overlay" @click.self="showModal = false">
       <div class="modal">
         <h2>新建会话</h2>
@@ -65,6 +108,7 @@
       </div>
     </div>
 
+    <!-- 重命名弹窗 -->
     <div v-if="editConv" class="modal-overlay" @click.self="editConv = null">
       <div class="modal">
         <h2>重命名会话</h2>
@@ -79,9 +123,11 @@
 </template>
 
 <script setup>
-import { ref, computed, onMounted } from 'vue'
+import { ref, computed, onMounted, watch, nextTick } from 'vue'
 import { useRouter } from 'vue-router'
-import { conversationsAPI, providersAPI } from '../utils/api.js'
+import { conversationsAPI, providersAPI, messagesAPI } from '../utils/api.js'
+import { renderMarkdown } from '../utils/markdown.js'
+import ProcessBlock from '../components/ProcessBlock.vue'
 
 const router = useRouter()
 const list = ref([])
@@ -94,6 +140,10 @@ const error = ref('')
 const showModal = ref(false)
 const creating = ref(false)
 const form = ref({ title: '', provider_id: null, model: '' })
+const selectedId = ref(null)
+const selectedConv = ref(null)
+const convMessages = ref([])
+const loadingMessages = ref(false)
 
 const totalPages = computed(() => Math.ceil(total.value / pageSize))
 
@@ -113,6 +163,10 @@ const fetchData = async () => {
     if (convRes.status === 'fulfilled' && convRes.value.success) {
       list.value = convRes.value.data?.items || []
       total.value = convRes.value.data?.total || 0
+      // 默认选中最后一个会话
+      if (list.value.length > 0 && !selectedId.value) {
+        selectConv(list.value[0])
+      }
     }
     if (provRes.status === 'fulfilled' && provRes.value.success) {
       providers.value = provRes.value.data?.providers || []
@@ -121,6 +175,88 @@ const fetchData = async () => {
   finally { loading.value = false }
 }
 
+const selectConv = async (c) => {
+  selectedId.value = c.id
+  selectedConv.value = c
+  await fetchConvMessages(c.id)
+}
+
+const fetchConvMessages = async (convId) => {
+  loadingMessages.value = true
+  convMessages.value = []
+  try {
+    const res = await messagesAPI.list(convId)
+    if (res.success) {
+      convMessages.value = res.data?.messages || []
+    }
+  } catch (e) {
+    console.error('获取消息失败:', e)
+  } finally {
+    loadingMessages.value = false
+  }
+}
+
+const newMessage = ref('')
+const sending = ref(false)
+const messagesContainer = ref(null)
+
+watch(convMessages, () => {
+  nextTick(() => {
+    if (messagesContainer.value) {
+      messagesContainer.value.scrollTop = messagesContainer.value.scrollHeight
+    }
+  })
+}, { deep: true })
+
+// 渲染消息内容（Markdown）
+const renderMsgContent = (msg) => {
+  const content = msg.content || msg.text || ''
+  if (!content) return '-'
+  return renderMarkdown(content)
+}
+
+const sendMessage = async () => {
+  if (!newMessage.value.trim() || !selectedConv.value || sending.value) return
+  
+  const content = newMessage.value.trim()
+  newMessage.value = ''
+  sending.value = true
+  
+  // 添加用户消息到列表
+  const userMsg = {
+    id: 'temp-' + Date.now(),
+    role: 'user',
+    content: content,
+    created_at: new Date().toISOString()
+  }
+  convMessages.value.push(userMsg)
+  
+  try {
+    await new Promise((resolve, reject) => {
+      messagesAPI.sendStream({
+        conversation_id: selectedConv.value.id,
+        content: content
+      }, {
+        onProcessStep: (step) => {
+          // 处理过程步骤
+        },
+        onDone: async (data) => {
+          // 刷新消息列表
+          await fetchConvMessages(selectedConv.value.id)
+          resolve()
+        },
+        onError: (error) => {
+          reject(new Error(error))
+        }
+      })
+    })
+  } catch (e) {
+    alert('发送失败: ' + e.message)
+  } finally {
+    sending.value = false
+  }
+}
+
 const createConv = async () => {
   creating.value = true
   try {
@@ -137,6 +273,10 @@ const createConv = async () => {
 const deleteConv = async (c) => {
   if (!confirm(`删除「${c.title || '未命名会话'}」？`)) return
   await conversationsAPI.delete(c.id)
+  if (selectedId.value === c.id) {
+    selectedId.value = null
+    selectedConv.value = null
+  }
   fetchData()
 }
 
@@ -161,35 +301,436 @@ onMounted(fetchData)
 </script>
 
 <style scoped>
-.table-container { background: var(--bg-primary); border: 1px solid var(--border-light); border-radius: 12px; overflow: hidden; }
-.conv-table { width: 100%; border-collapse: collapse; }
-.conv-table th { text-align: left; padding: 1rem; background: var(--bg-secondary); font-weight: 600; font-size: 0.85rem; color: var(--text-secondary); border-bottom: 1px solid var(--border-light); }
-.conv-table td { padding: 1rem; border-bottom: 1px solid var(--border-light); vertical-align: middle; }
-.conv-table tr:last-child td { border-bottom: none; }
-.conv-table tr:hover td { background: var(--bg-secondary); cursor: pointer; }
-.title-col { max-width: 300px; }
-.conv-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
-.model-col { width: 150px; font-size: 0.85rem; color: var(--text-secondary); }
-.time-col { width: 150px; font-size: 0.85rem; color: var(--text-secondary); }
-.action-col { width: 140px; text-align: center; }
-.btn-edit, .btn-delete { padding: 0.3rem 0.5rem; background: transparent; border: 1px solid var(--border-light); border-radius: 4px; cursor: pointer; font-size: 0.75rem; margin: 0 0.15rem; }
-.btn-edit { color: var(--text-secondary); }
-.btn-edit:hover { color: var(--accent-primary); border-color: var(--accent-primary); }
-.btn-delete { color: #dc2626; }
-.btn-delete:hover { background: #dc2626; color: white; }
-.btn-primary { padding: 0.6rem 1.2rem; background: #2563eb; color: #ffffff; border: none; border-radius: 8px; cursor: pointer; font-size: 0.9rem; font-weight: 500; }
-.btn-primary:hover { background: #1d4ed8; }
-.btn-secondary { padding: 0.6rem 1.2rem; background: transparent; border: 1px solid var(--border-light); border-radius: 8px; cursor: pointer; font-size: 0.9rem; }
-.loading { text-align: center; padding: 4rem; }
-.empty-card { text-align: center; padding: 4rem; color: var(--text-secondary); background: var(--bg-primary); border: 1px solid var(--border-light); border-radius: 12px; }
-.error-msg { text-align: center; padding: 2rem; color: var(--accent-primary); background: var(--accent-primary-light); border-radius: 12px; }
-.pagination { display: flex; justify-content: center; align-items: center; gap: 1rem; margin-top: 1.5rem; }
-.pagination button { padding: 0.5rem 1rem; background: var(--bg-primary); border: 1px solid var(--border-light); border-radius: 6px; cursor: pointer; }
-.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }
-.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; }
-.modal { background: var(--bg-primary); border-radius: 16px; padding: 2rem; width: 100%; max-width: 480px; }
-.modal h2 { margin: 0 0 1.5rem; }
-.modal-actions { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1.5rem; }
-.spinner { width: 40px; height: 40px; border: 3px solid var(--border-light); border-top-color: var(--accent-primary); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 1rem; }
-@keyframes spin { to { transform: rotate(360deg); } }
+/* 布局 */
+.conv-layout {
+  display: flex;
+  gap: 1rem;
+  height: calc(100vh - 120px);
+  min-height: 500px;
+}
+
+/* 左侧边栏 */
+.conv-sidebar {
+  width: 240px;
+  min-width: 200px;
+  background: var(--bg-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.conv-list {
+  flex: 1;
+  overflow-y: auto;
+}
+
+/* 会话列表项 */
+.conv-item {
+  padding: 0.85rem 1rem;
+  border-bottom: 1px solid var(--border-light);
+  cursor: pointer;
+  transition: all 0.15s ease;
+}
+
+.conv-item:hover {
+  background: var(--bg-hover);
+}
+
+.conv-item.active {
+  background: var(--accent-primary-light);
+  border-left: 3px solid var(--accent-primary);
+}
+
+.conv-item-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+  gap: 0.5rem;
+  margin-bottom: 0.4rem;
+}
+
+.conv-item-title {
+  font-size: 0.9rem;
+  font-weight: 500;
+  color: var(--text-primary);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  flex: 1;
+}
+
+.conv-item-time {
+  font-size: 0.7rem;
+  color: var(--text-tertiary);
+  flex-shrink: 0;
+}
+
+.conv-item-meta {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.conv-item-model {
+  font-size: 0.75rem;
+  color: var(--text-secondary);
+}
+
+.conv-item-actions {
+  display: flex;
+  gap: 0.25rem;
+  opacity: 1;
+}
+
+.btn-icon {
+  padding: 0.2rem;
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  font-size: 0.75rem;
+  opacity: 0.6;
+  transition: opacity 0.15s;
+}
+
+.btn-icon:hover {
+  opacity: 1;
+}
+
+.btn-delete-icon {
+  color: var(--danger-color);
+}
+
+/* 侧边栏分页 */
+.sidebar-pagination {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  gap: 0.75rem;
+  padding: 0.75rem;
+  border-top: 1px solid var(--border-light);
+  font-size: 0.8rem;
+  color: var(--text-secondary);
+}
+
+.btn-page {
+  padding: 0.25rem 0.5rem;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-light);
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.9rem;
+}
+
+.btn-page:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+/* 右侧内容区 */
+.conv-content {
+  flex: 1;
+  background: var(--bg-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.empty-content {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  color: var(--text-secondary);
+}
+
+.empty-icon {
+  font-size: 3rem;
+  margin-bottom: 1rem;
+  opacity: 0.5;
+}
+
+.empty-content p {
+  font-size: 0.9rem;
+}
+
+/* 聊天视图容器 */
+.chat-view-container {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  overflow: hidden;
+}
+
+.chat-messages {
+  flex: 1;
+  overflow-y: auto;
+  padding: 1rem;
+}
+
+.chat-message {
+  display: flex;
+  gap: 0.75rem;
+  margin-bottom: 1rem;
+}
+
+.chat-message.user {
+  flex-direction: row-reverse;
+}
+
+.message-avatar {
+  width: 32px;
+  height: 32px;
+  border-radius: 50%;
+  background: var(--bg-secondary);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 1rem;
+  flex-shrink: 0;
+}
+
+.message-content {
+  max-width: 70%;
+}
+
+.message-text {
+  padding: 0.65rem 0.9rem;
+  border-radius: 12px;
+  font-size: 0.9rem;
+  line-height: 1.5;
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  word-break: break-word;
+}
+
+.chat-message.user .message-text {
+  background: var(--accent-primary);
+  color: white;
+}
+
+.chat-empty {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--text-tertiary);
+  font-size: 0.85rem;
+}
+
+.loading-messages {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 2rem;
+  color: var(--text-secondary);
+  font-size: 0.85rem;
+}
+
+.loading-messages .spinner-small {
+  margin-bottom: 0.5rem;
+}
+
+/* Markdown 内容样式 */
+.message-text {
+  line-height: 1.6;
+}
+
+.message-text :deep(pre) {
+  background: var(--bg-code);
+  border-radius: 8px;
+  padding: 0.75rem;
+  overflow-x: auto;
+  margin: 0.5rem 0;
+}
+
+.message-text :deep(code) {
+  background: var(--bg-code);
+  padding: 0.15rem 0.35rem;
+  border-radius: 4px;
+  font-size: 0.85em;
+}
+
+.message-text :deep(pre code) {
+  background: none;
+  padding: 0;
+}
+
+.message-text :deep(p) {
+  margin: 0.5rem 0;
+}
+
+.message-text :deep(p:first-child) {
+  margin-top: 0;
+}
+
+.message-text :deep(p:last-child) {
+  margin-bottom: 0;
+}
+
+.chat-input-area {
+  padding: 1rem;
+  border-top: 1px solid var(--border-light);
+  display: flex;
+  gap: 0.75rem;
+}
+
+.chat-input {
+  flex: 1;
+  padding: 0.65rem 0.9rem;
+  border: 1px solid var(--border-input);
+  border-radius: 8px;
+  background: var(--bg-input);
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+.chat-input:focus {
+  outline: none;
+  border-color: var(--accent-primary);
+}
+
+.btn-send {
+  padding: 0.5rem 1rem;
+  background: var(--accent-primary);
+  color: white;
+  border: none;
+  border-radius: 8px;
+  cursor: pointer;
+  font-size: 0.85rem;
+}
+
+.btn-send:hover {
+  background: var(--accent-primary-hover);
+}
+
+/* 按钮样式 */
+.btn-primary {
+  padding: 0.5rem 1rem;
+  background: var(--accent-primary);
+  color: white;
+  border: none;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 0.85rem;
+  transition: all 0.2s;
+}
+
+.btn-primary:hover {
+  background: var(--accent-primary-hover);
+}
+
+.btn-secondary {
+  padding: 0.5rem 1rem;
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 0.85rem;
+  transition: all 0.2s;
+}
+
+.btn-secondary:hover {
+  background: var(--bg-hover);
+}
+
+/* 加载和空状态 */
+.loading, .empty-sidebar {
+  text-align: center;
+  padding: 2rem;
+  color: var(--text-secondary);
+  font-size: 0.85rem;
+}
+
+.error-msg {
+  text-align: center;
+  padding: 1rem;
+  color: var(--danger-color);
+  background: var(--danger-bg);
+  border-radius: 8px;
+  margin: 1rem;
+  font-size: 0.85rem;
+}
+
+.spinner-small {
+  width: 24px;
+  height: 24px;
+  border: 3px solid var(--border-light);
+  border-top-color: var(--accent-primary);
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+  margin: 0 auto 0.5rem;
+}
+
+/* 模态框 */
+.modal-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0,0,0,0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.modal {
+  background: var(--bg-primary);
+  border-radius: 16px;
+  padding: 1.25rem;
+  width: 100%;
+  max-width: 400px;
+}
+
+.modal h2 {
+  margin: 0 0 1.25rem;
+  font-size: 1.1rem;
+  color: var(--text-primary);
+}
+
+.form-group {
+  margin-bottom: 1rem;
+}
+
+.form-group label {
+  display: block;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  font-size: 0.9rem;
+  color: var(--text-primary);
+}
+
+.form-group input,
+.form-group select {
+  width: 100%;
+  padding: 0.65rem;
+  border: 1px solid var(--border-input);
+  border-radius: 8px;
+  background: var(--bg-input);
+  box-sizing: border-box;
+  font-size: 0.9rem;
+  color: var(--text-primary);
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+  margin-top: 1.25rem;
+}
+
+@keyframes spin {
+  to { transform: rotate(360deg); }
+}
 </style>
diff --git a/dashboard/src/views/SettingsView.vue b/dashboard/src/views/SettingsView.vue
index 8a68eda..26d2512 100644
--- a/dashboard/src/views/SettingsView.vue
+++ b/dashboard/src/views/SettingsView.vue
@@ -5,112 +5,110 @@
     </div>
 
     <!-- 用户信息 -->
-    <div class="page-section">
-      <div class="section-header">
-        <h2>👤 用户信息</h2>
+    <div class="settings-section">
+      <div class="section-title">
+        <span class="section-icon">👤</span>
+        <span class="section-text">用户信息</span>
       </div>
-      <div v-if="loadingUser" class="loading-small"><div class="spinner-small"></div>加载中...</div>
-      <div v-else class="page-card">
-        <div class="info-grid">
-          <div class="info-item">
-            <span class="label">用户名</span>
-            <span class="value">{{ userForm.username || '-' }}</span>
+      <div class="settings-card">
+        <div v-if="loadingUser" class="loading-small"><div class="spinner-small"></div>加载中...</div>
+        <template v-else>
+          <div class="settings-row">
+            <div class="row-label">
+              <span class="label-icon">用户名</span>
+            </div>
+            <div class="row-value">{{ userForm.username || '-' }}</div>
           </div>
-          <div class="info-item">
-            <span class="label">邮箱</span>
-            <span class="value">{{ userForm.email || '-' }}</span>
+          <div class="settings-row">
+            <div class="row-label">
+              <span class="label-icon">邮箱</span>
+            </div>
+            <div class="row-value">{{ userForm.email || '-' }}</div>
           </div>
-        </div>
-        <div class="card-actions">
-          <button @click="openUserModal" class="btn-primary">编辑资料</button>
-          <button @click="handleLogout" class="btn-primary">退出登录</button>
-        </div>
+          <div class="settings-row actions">
+            <button @click="openUserModal" class="btn-action">编辑资料</button>
+            <button @click="handleLogout" class="btn-action btn-logout">退出登录</button>
+          </div>
+        </template>
       </div>
     </div>
 
-    <!-- 主题设置 -->
-    <div class="page-section">
-      <div class="section-header">
-        <h2>🎨 主题设置</h2>
+    <!-- 模型设置 -->
+    <div class="settings-section">
+      <div class="section-title">
+        <span class="section-icon">🤖</span>
+        <span class="section-text">模型设置</span>
       </div>
-      <div class="page-card">
-        <div class="form-group">
-          <label class="switch-card">
-            <div class="switch-content">
-              <span class="switch-title">暗色模式</span>
-              <span class="switch-desc">启用深色主题界面</span>
-            </div>
-            <label class="switch">
-              <input v-model="isDarkMode" type="checkbox" @change="toggleTheme" />
-              <span class="slider"></span>
-            </label>
-          </label>
-        </div>
-      </div>
-    </div>
-
-    <!-- 默认模型设置 -->
-    <div class="page-section">
-      <div class="section-header">
-        <h2>🤖 模型设置</h2>
-      </div>
-      <div class="page-card">
-        <div class="form-group">
-          <label>默认 Provider</label>
-          <select v-model="modelSettings.default_provider">
-            <option v-for="p in providers" :key="p.id" :value="p.id">
-              {{ p.name }} ({{ p.default_model }})
-            </option>
-          </select>
-        </div>
-        <div class="form-row">
-          <div class="form-group">
-            <label>温度 (Temperature)</label>
-            <input v-model.number="modelSettings.temperature" type="number" min="0" max="2" step="0.1" />
-            <span class="hint">控制随机性，较低值更确定，较高值更有创造性</span>
-          </div>
-          <div class="form-group">
-            <label>最大 Tokens</label>
-            <input v-model.number="modelSettings.max_tokens" type="number" min="100" max="32000" />
-            <span class="hint">单次回复最大 token 数</span>
+      <div class="settings-card">
+        <div class="settings-row">
+          <div class="row-label">默认 Provider</div>
+          <div class="row-value">
+            <select v-model="modelSettings.default_provider" class="inline-select">
+              <option v-for="p in providers" :key="p.id" :value="p.id">
+                {{ p.name }} ({{ p.default_model }})
+              </option>
+            </select>
           </div>
         </div>
-        <div class="form-group">
-          <label class="switch-card">
-            <div class="switch-content">
-              <span class="switch-title">启用推理模式</span>
-              <span class="switch-desc">使用 CoT 推理，消耗更多 token 但更准确</span>
+        <div class="settings-row">
+          <div class="row-label">温度 (Temperature)</div>
+          <div class="row-value">
+            <div class="input-with-hint">
+              <input v-model.number="modelSettings.temperature" type="number" min="0" max="2" step="0.1" class="inline-input" />
+              <span class="hint-inline">控制随机性，较低值更确定，较高值更有创造性</span>
             </div>
-            <label class="switch">
+          </div>
+        </div>
+        <div class="settings-row">
+          <div class="row-label">最大 Tokens</div>
+          <div class="row-value">
+            <div class="input-with-hint">
+              <input v-model.number="modelSettings.max_tokens" type="number" min="100" max="32000" class="inline-input" />
+              <span class="hint-inline">单次回复最大 token 数</span>
+            </div>
+          </div>
+        </div>
+        <div class="settings-row">
+          <div class="row-label">
+            <span class="row-title">推理模式</span>
+            <span class="row-desc">使用 CoT 推理，消耗更多 token 但更准确</span>
+          </div>
+          <div class="row-value">
+            <label class="switch" @click.prevent="modelSettings.thinking_enabled = !modelSettings.thinking_enabled">
               <input v-model="modelSettings.thinking_enabled" type="checkbox" />
               <span class="slider"></span>
             </label>
-          </label>
+          </div>
+        </div>
+        <div class="settings-row actions">
+          <button @click="saveModelSettings" class="btn-primary">保存设置</button>
         </div>
-        <button @click="saveModelSettings" class="btn-primary">保存设置</button>
       </div>
     </div>
 
     <!-- 系统提示词 -->
-    <div class="page-section">
-      <div class="section-header">
-        <h2>💬 系统提示词</h2>
+    <div class="settings-section">
+      <div class="section-title">
+        <span class="section-icon">💬</span>
+        <span class="section-text">系统提示词</span>
       </div>
-      <div class="page-card">
-        <div class="form-group">
-          <label>默认系统提示词</label>
+      <div class="settings-card">
+        <div class="settings-row full">
           <textarea v-model="modelSettings.system_prompt" rows="4" placeholder="You are a helpful assistant."></textarea>
-          <span class="hint">设置默认系统提示词，可在新建会话时覆盖</span>
+          <span class="hint-block">设置默认系统提示词，可在新建会话时覆盖</span>
+        </div>
+        <div class="settings-row actions">
+          <button @click="saveSystemPrompt" class="btn-primary">保存提示词</button>
         </div>
-        <button @click="saveSystemPrompt" class="btn-primary">保存提示词</button>
       </div>
     </div>
 
     <!-- LLM Provider 管理 -->
-    <div class="page-section">
-      <div class="section-header">
-        <h2>🔌 LLM Provider</h2>
-        <button @click="showModal = true" class="btn-primary">+ 添加</button>
+    <div class="settings-section">
+      <div class="section-title">
+        <span class="section-icon">🔌</span>
+        <span class="section-text">LLM Provider</span>
+        <button @click="showModal = true" class="btn-add">+ 添加</button>
       </div>
     </div>
 
@@ -120,44 +118,49 @@
       <p>暂无 Provider，点击上方按钮添加</p>
     </div>
     
-    <div v-else class="page-grid">
-      <div v-for="p in providers" :key="p.id" class="page-card provider-card">
-        <div class="card-header">
-          <div class="card-title">
-            <h3>{{ p.name }}</h3>
-            <span v-if="p.is_default" class="badge default">默认</span>
-            <span v-if="p.enabled" class="badge enabled">启用</span>
-            <span v-else class="badge disabled">禁用</span>
-          </div>
-          <label class="switch">
-            <input type="checkbox" :checked="p.enabled" @change="toggleEnabled(p)" />
-            <span class="slider"></span>
-          </label>
-        </div>
-        
-        <div class="info-list">
-          <div class="info-item">
-            <span class="label">API:</span>
-            <span class="value url">{{ p.base_url }}</span>
-          </div>
-          <div class="info-item">
-            <span class="label">模型:</span>
-            <span class="value">{{ p.default_model }}</span>
-          </div>
-          <div class="info-item">
-            <span class="label">最大Tokens:</span>
-            <span class="value">{{ p.max_tokens || 8192 }}</span>
-          </div>
-        </div>
-
-        <div class="card-actions">
-          <button @click="editProvider(p)">编辑</button>
-          <button @click="testProvider(p)" :disabled="testing === p.id">
-            {{ testing === p.id ? '测试中...' : '测试连接' }}
-          </button>
-          <button @click="deleteProvider(p)" class="btn-danger">删除</button>
-        </div>
-      </div>
+    <div v-else class="settings-table-container">
+      <table class="settings-table">
+        <thead>
+          <tr>
+            <th>名称</th>
+            <th>API / 模型</th>
+            <th class="action-col">启用</th>
+            <th class="ops-col">操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="p in providers" :key="p.id">
+            <td class="name-col">
+              <div class="provider-name">{{ p.name }}</div>
+              <div class="provider-badges">
+                <span v-if="p.is_default" class="badge default">默认</span>
+                <span v-if="p.enabled" class="badge enabled">启用</span>
+                <span v-else class="badge disabled">禁用</span>
+              </div>
+            </td>
+            <td class="info-col">
+              <div class="info-item">{{ p.base_url }}</div>
+              <div class="info-item sub">模型: {{ p.default_model }}</div>
+              <div class="info-item sub">最大Tokens: {{ p.max_tokens || 8192 }}</div>
+            </td>
+            <td class="switch-col">
+              <label class="switch" @click.prevent="toggleEnabled(p)">
+                <input type="checkbox" :checked="p.enabled" />
+                <span class="slider"></span>
+              </label>
+            </td>
+            <td class="ops-col">
+              <div class="ops-buttons">
+                <button @click="editProvider(p)" class="btn-op">编辑</button>
+                <button @click="testProvider(p)" :disabled="testing === p.id" class="btn-op">
+                  {{ testing === p.id ? '测试中...' : '测试' }}
+                </button>
+                <button @click="deleteProvider(p)" class="btn-op btn-danger">删除</button>
+              </div>
+            </td>
+          </tr>
+        </tbody>
+      </table>
     </div>
 
     <!-- 测试结果弹窗 -->
@@ -238,14 +241,14 @@
 </template>
 
 <script setup>
-import { ref, onMounted, watch } from 'vue'
-import { providersAPI, conversationsAPI } from '../utils/api.js'
+import { ref, onMounted } from 'vue'
+import { providersAPI } from '../utils/api.js'
 import { useAuth } from '../utils/useAuth.js'
 import { authAPI } from '../utils/api.js'
 import { useRouter } from 'vue-router'
 
 const router = useRouter()
-const { user, logout } = useAuth()
+const { logout } = useAuth()
 
 const handleLogout = async () => {
   if (!confirm('确定要退出登录吗？')) return
@@ -268,24 +271,6 @@ const modelSettings = ref({
   system_prompt: 'You are a helpful assistant.'
 })
 
-// 暗色模式
-const isDarkMode = ref(localStorage.getItem('theme') === 'dark')
-
-const toggleTheme = () => {
-  if (isDarkMode.value) {
-    document.documentElement.setAttribute('data-theme', 'dark')
-    localStorage.setItem('theme', 'dark')
-  } else {
-    document.documentElement.removeAttribute('data-theme')
-    localStorage.setItem('theme', 'light')
-  }
-}
-
-// 初始化主题
-if (localStorage.getItem('theme') === 'dark') {
-  document.documentElement.setAttribute('data-theme', 'dark')
-}
-
 const fetchUserInfo = async () => {
   loadingUser.value = true
   try {
@@ -328,7 +313,6 @@ const updateUser = async () => {
 }
 
 const saveModelSettings = async () => {
-  // 保存到本地或服务器
   localStorage.setItem('modelSettings', JSON.stringify(modelSettings.value))
   alert('模型设置已保存')
 }
@@ -359,7 +343,6 @@ const fetchProviders = async () => {
     const res = await providersAPI.list()
     if (res.success) {
       providers.value = res.data.providers || []
-      // 设置默认 provider
       const defaultProvider = providers.value.find(p => p.is_default)
       if (defaultProvider && !modelSettings.value.default_provider) {
         modelSettings.value.default_provider = defaultProvider.id
@@ -460,7 +443,6 @@ onMounted(() => {
   fetchUserInfo()
   fetchProviders()
   
-  // 加载本地设置
   const savedSettings = localStorage.getItem('modelSettings')
   if (savedSettings) {
     try {
@@ -477,87 +459,622 @@ onMounted(() => {
 </script>
 
 <style scoped>
-.section { margin-bottom: 2rem; }
-.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 2px solid var(--border-light); }
-.section-header h2 { font-size: 1.1rem; margin: 0; color: var(--text-primary); font-weight: 700; }
-.card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04); }
-.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
-.card-title { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
-.card-title h3 { margin: 0; color: var(--text-h); }
-.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
-.info-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; }
-.info-item { display: flex; gap: 0.75rem; font-size: 0.9rem; }
-.info-item .label { color: var(--text); min-width: 70px; flex-shrink: 0; }
-.info-item .value { color: var(--text-h); }
-.info-item .value.url { font-size: 0.8rem; word-break: break-all; }
-.card-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
-.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
-.form-group { margin-bottom: 1rem; }
-.form-group:last-child { margin-bottom: 0; }
-.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--text-h); font-size: 0.9rem; }
-.form-group input, .form-group select, .form-group textarea { 
-  width: 100%; 
-  padding: 0.65rem; 
-  border: 1px solid var(--border); 
-  border-radius: 8px; 
-  font-size: 0.9rem; 
-  background: var(--bg); 
-  box-sizing: border-box;
-  color: var(--text-h);
+/* 通用设置部分 */
+.settings-section {
+  margin-bottom: 1.5rem;
 }
-.form-group textarea { resize: vertical; min-height: 100px; }
-.form-group .hint { font-size: 0.75rem; color: var(--text); margin-top: 4px; display: block; }
-.switch-card { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; transition: all 0.2s ease; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04); }
-.switch-card:hover { border-color: var(--accent); box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08); }
-.switch-card.active { border-color: var(--accent); background: var(--accent-bg); }
-.switch-content { display: flex; flex-direction: column; gap: 0.25rem; }
-.switch-title { font-weight: 600; color: var(--text-primary); }
-.switch-desc { font-size: 0.8rem; color: var(--text-secondary); }
-.switch-title { font-weight: 500; color: var(--text-h); font-size: 0.9rem; }
-.switch-desc { font-size: 0.75rem; color: var(--text); }
-.switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
-.switch input { opacity: 0; width: 0; height: 0; }
-.slider { position: absolute; cursor: pointer; inset: 0; background-color: #ccc; transition: 0.3s; border-radius: 24px; }
-.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: 0.3s; border-radius: 50%; }
-input:checked + .slider { background-color: var(--accent); }
-input:checked + .slider:before { transform: translateX(20px); }
-.badge { padding: 0.2rem 0.6rem; border-radius: 20px; font-size: 0.7rem; font-weight: 500; }
-.badge.default { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); color: white; }
-.badge.enabled { background: #dcfce7; color: #16a34a; }
-.badge.disabled { background: var(--bg); color: var(--text); }
-.provider-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem; }
 
-.btn-primary { padding: 0.6rem 1.2rem; background: #2563eb; color: #ffffff; border: none; border-radius: 8px; cursor: pointer; font-size: 0.85rem; font-weight: 500; }
-.btn-primary:hover { background: #1d4ed8; }
-.btn-secondary { padding: 0.6rem 1.2rem; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; font-size: 0.85rem; }
-.btn-danger { padding: 0.5rem 1rem; background: var(--accent-bg); color: var(--accent); border: 1px solid var(--accent-border); border-radius: 6px; cursor: pointer; font-size: 0.8rem; }
-.btn-danger:hover { background: var(--accent); color: white; }
-.btn-danger-outline { padding: 0.6rem 1.2rem; background: transparent; color: var(--accent); border: 1px solid var(--accent-border); border-radius: 8px; cursor: pointer; font-size: 0.85rem; }
-.btn-danger-outline:hover { background: var(--accent-bg); }
-.card-actions button { padding: 0.5rem 1rem; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; cursor: pointer; font-size: 0.8rem; }
-.card-actions button.btn-primary, .card-actions button.btn-secondary { all: unset; }
-.card-actions button.btn-primary { padding: 0.6rem 1.2rem; background: #2563eb; color: #ffffff; border: none; border-radius: 8px; cursor: pointer; font-size: 0.85rem; font-weight: 500; display: inline-block; }
-.card-actions button.btn-primary:hover { background: #1d4ed8; }
-.card-actions button:not(.btn-primary):not(.btn-secondary):hover { background: var(--border); }
-.loading, .empty-card, .error { text-align: center; padding: 3rem; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 12px; }
-.error { background: var(--accent-bg); color: var(--accent); }
-.loading-small { padding: 1.5rem; text-align: center; color: var(--text); }
-.spinner-small { width: 24px; height: 24px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 0.5rem; }
-.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 1rem; }
-.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; }
-.modal { background: var(--bg); border-radius: 16px; padding: 1.5rem; width: 100%; max-width: 480px; }
-.modal h2 { margin: 0 0 1.25rem; color: var(--text-h); font-size: 1.1rem; }
-.result-modal { text-align: center; }
-.result-modal.loading { min-height: 120px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
-.result-loading { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }
-.spinner-large { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
-.result-modal .result-icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; font-size: 1.5rem; }
-.result-modal.success .result-icon { background: #dcfce7; color: #16a34a; }
-.result-modal.error .result-icon { background: var(--accent-bg); color: var(--accent); }
-.result-modal h2 { margin: 0 0 0.75rem; }
-.result-modal .result-message { color: var(--text); margin-bottom: 1rem; font-size: 0.9rem; }
-.result-modal .result-json { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem; margin: 0.75rem 0; max-height: 150px; overflow: auto; font-size: 0.75rem; text-align: left; white-space: pre-wrap; word-break: break-all; }
-.modal-actions { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1.25rem; }
-.optional { color: var(--text); font-weight: normal; font-size: 0.8rem; }
-@keyframes spin { to { transform: rotate(360deg); } }
+.section-title {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-bottom: 0.75rem;
+  padding: 0.5rem 0;
+}
+
+.section-icon {
+  font-size: 1rem;
+}
+
+.section-text {
+  font-size: 1rem;
+  font-weight: 700;
+  color: var(--text-primary);
+}
+
+.btn-add {
+  margin-left: auto;
+  padding: 0.4rem 0.8rem;
+  background: var(--accent-primary);
+  color: white;
+  border: none;
+  border-radius: 6px;
+  font-size: 0.8rem;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.btn-add:hover {
+  background: var(--accent-primary-hover);
+}
+
+/* 设置卡片 */
+.settings-card {
+  background: var(--bg-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+  overflow: hidden;
+}
+
+/* 设置行 */
+.settings-row {
+  display: flex;
+  align-items: center;
+  padding: 0.85rem 1rem;
+  border-bottom: 1px solid var(--border-light);
+}
+
+.settings-row:last-child {
+  border-bottom: none;
+}
+
+.settings-row.full {
+  flex-direction: column;
+  align-items: stretch;
+}
+
+.settings-row.actions {
+  justify-content: flex-end;
+  gap: 0.5rem;
+  background: var(--bg-secondary);
+}
+
+.row-label {
+  min-width: 140px;
+  color: var(--text-secondary);
+  font-size: 0.85rem;
+  flex-shrink: 0;
+}
+
+.row-title {
+  display: block;
+  font-weight: 500;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+.row-desc {
+  display: block;
+  font-size: 0.75rem;
+  color: var(--text-secondary);
+  margin-top: 0.15rem;
+}
+
+.row-value {
+  flex: 1;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+/* 内联输入框 */
+.inline-select,
+.inline-input {
+  padding: 0.5rem 0.75rem;
+  border: 1px solid var(--border-input);
+  border-radius: 6px;
+  background: var(--bg-input);
+  color: var(--text-primary);
+  font-size: 0.85rem;
+  min-width: 180px;
+}
+
+.inline-input {
+  width: 120px;
+}
+
+.input-with-hint {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+  flex-wrap: wrap;
+}
+
+.hint-inline {
+  font-size: 0.75rem;
+  color: var(--text-tertiary);
+}
+
+textarea {
+  width: 100%;
+  padding: 0.75rem;
+  border: 1px solid var(--border-input);
+  border-radius: 8px;
+  background: var(--bg-input);
+  color: var(--text-primary);
+  font-size: 0.85rem;
+  resize: vertical;
+  min-height: 80px;
+  box-sizing: border-box;
+}
+
+.hint-block {
+  font-size: 0.75rem;
+  color: var(--text-tertiary);
+  margin-top: 0.5rem;
+}
+
+/* 表格容器 */
+.settings-table-container {
+  background: var(--bg-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+  overflow: hidden;
+}
+
+.settings-table {
+  width: 100%;
+  border-collapse: collapse;
+}
+
+.settings-table th {
+  text-align: left;
+  padding: 0.85rem 1rem;
+  background: var(--bg-secondary);
+  font-weight: 600;
+  font-size: 0.8rem;
+  color: var(--text-secondary);
+  border-bottom: 1px solid var(--border-light);
+}
+
+.settings-table td {
+  padding: 0.85rem 1rem;
+  border-bottom: 1px solid var(--border-light);
+  vertical-align: middle;
+}
+
+.settings-table tr:last-child td {
+  border-bottom: none;
+}
+
+.settings-table tr:hover td {
+  background: var(--bg-hover);
+}
+
+/* 列宽 */
+.name-col {
+  min-width: 140px;
+}
+
+.info-col {
+  min-width: 200px;
+}
+
+.switch-col {
+  text-align: center;
+  width: 80px;
+}
+
+.action-col {
+  text-align: center;
+  width: 80px;
+}
+
+.ops-col {
+  width: 220px;
+  min-width: 220px;
+}
+
+/* Provider 单元格 */
+.provider-name {
+  font-weight: 600;
+  font-size: 0.9rem;
+  color: var(--text-primary);
+}
+
+.provider-badges {
+  display: flex;
+  gap: 0.35rem;
+  margin-top: 0.35rem;
+}
+
+.badge {
+  display: inline-block;
+  padding: 0.15rem 0.5rem;
+  border-radius: 20px;
+  font-size: 0.65rem;
+  font-weight: 500;
+}
+
+.badge.default {
+  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
+  color: white;
+}
+
+.badge.enabled {
+  background: rgba(52, 211, 153, 0.2);
+  color: #16a34a;
+}
+
+.badge.disabled {
+  background: var(--bg-tertiary);
+  color: var(--text-tertiary);
+}
+
+.info-item {
+  font-size: 0.8rem;
+  color: var(--text-primary);
+  word-break: break-all;
+}
+
+.info-item.sub {
+  font-size: 0.75rem;
+  color: var(--text-secondary);
+  margin-top: 0.2rem;
+}
+
+/* 开关 */
+.switch {
+  position: relative;
+  display: inline-block;
+  width: 40px;
+  height: 22px;
+  flex-shrink: 0;
+}
+
+.switch input {
+  opacity: 0;
+  width: 0;
+  height: 0;
+}
+
+.slider {
+  position: absolute;
+  cursor: pointer;
+  inset: 0;
+  background-color: #ccc;
+  transition: 0.3s;
+  border-radius: 22px;
+}
+
+.slider:before {
+  position: absolute;
+  content: "";
+  height: 16px;
+  width: 16px;
+  left: 3px;
+  bottom: 3px;
+  background-color: white;
+  transition: 0.3s;
+  border-radius: 50%;
+}
+
+input:checked + .slider {
+  background-color: var(--accent-primary);
+}
+
+input:checked + .slider:before {
+  transform: translateX(18px);
+}
+
+/* 操作按钮 */
+.ops-buttons {
+  display: flex;
+  flex-wrap: nowrap;
+  gap: 0.5rem;
+}
+
+.btn-op {
+  padding: 0.4rem 0.75rem;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-light);
+  border-radius: 6px;
+  font-size: 0.8rem;
+  color: var(--text-secondary);
+  cursor: pointer;
+  transition: all 0.2s;
+  white-space: nowrap;
+}
+
+.btn-op:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+}
+
+.btn-op.btn-danger {
+  color: var(--danger-color);
+  border-color: var(--danger-bg);
+}
+
+.btn-op.btn-danger:hover {
+  background: var(--danger-bg);
+}
+
+/* 用户信息区域按钮 */
+.btn-action {
+  padding: 0.45rem 0.9rem;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-light);
+  border-radius: 6px;
+  font-size: 0.8rem;
+  color: var(--text-primary);
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.btn-action:hover {
+  background: var(--bg-hover);
+  border-color: var(--accent-primary);
+}
+
+.btn-action.btn-logout {
+  color: var(--danger-color);
+}
+
+.btn-action.btn-logout:hover {
+  background: var(--danger-bg);
+  border-color: var(--danger-color);
+}
+
+/* 主要按钮 */
+.btn-primary {
+  padding: 0.5rem 1rem;
+  background: var(--accent-primary);
+  color: white;
+  border: none;
+  border-radius: 6px;
+  font-size: 0.85rem;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.btn-primary:hover {
+  background: var(--accent-primary-hover);
+}
+
+.btn-secondary {
+  padding: 0.5rem 1rem;
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 6px;
+  font-size: 0.85rem;
+  cursor: pointer;
+}
+
+.btn-secondary:hover {
+  background: var(--bg-hover);
+}
+
+/* 模态框 */
+.modal-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0,0,0,0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.modal {
+  background: var(--bg-primary);
+  border-radius: 16px;
+  padding: 1.25rem;
+  width: 100%;
+  max-width: 400px;
+}
+
+.modal h2 {
+  margin: 0 0 1.25rem;
+  color: var(--text-primary);
+  font-size: 1.1rem;
+}
+
+.result-modal {
+  text-align: center;
+}
+
+.result-modal.loading {
+  min-height: 120px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+.result-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 0.75rem;
+}
+
+.spinner-large {
+  width: 40px;
+  height: 40px;
+  border: 3px solid var(--border-light);
+  border-top-color: var(--accent-primary);
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+}
+
+.result-modal .result-icon {
+  width: 56px;
+  height: 56px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin: 0 auto 1rem;
+  font-size: 1.5rem;
+}
+
+.result-modal.success .result-icon {
+  background: rgba(52, 211, 153, 0.2);
+  color: #16a34a;
+}
+
+.result-modal.error .result-icon {
+  background: var(--danger-bg);
+  color: var(--danger-color);
+}
+
+.result-modal h2 {
+  margin: 0 0 0.75rem;
+}
+
+.result-modal .result-message {
+  color: var(--text-secondary);
+  margin-bottom: 1rem;
+  font-size: 0.9rem;
+}
+
+.result-modal .result-json {
+  background: var(--bg-code);
+  border: 1px solid var(--border-light);
+  border-radius: 8px;
+  padding: 0.75rem;
+  margin: 0.75rem 0;
+  max-height: 150px;
+  overflow: auto;
+  font-size: 0.75rem;
+  text-align: left;
+  white-space: pre-wrap;
+  word-break: break-all;
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+  margin-top: 1.25rem;
+}
+
+.form-group {
+  margin-bottom: 1rem;
+}
+
+.form-group label {
+  display: block;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+.form-group input {
+  width: 100%;
+  padding: 0.65rem;
+  border: 1px solid var(--border-input);
+  border-radius: 8px;
+  background: var(--bg-input);
+  box-sizing: border-box;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+}
+
+.form-group .hint {
+  font-size: 0.75rem;
+  color: var(--text-tertiary);
+  margin-top: 4px;
+  display: block;
+}
+
+.switch-card {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 1rem 1.25rem;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-light);
+  border-radius: 10px;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.switch-card:hover {
+  border-color: var(--accent-primary);
+}
+
+.switch-card.active {
+  border-color: var(--accent-primary);
+  background: var(--accent-primary-light);
+}
+
+.switch-content {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+}
+
+.switch-title {
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+.switch-desc {
+  font-size: 0.8rem;
+  color: var(--text-secondary);
+}
+
+.optional {
+  color: var(--text-tertiary);
+  font-weight: normal;
+  font-size: 0.8rem;
+}
+
+.error {
+  color: var(--danger-color);
+  background: var(--danger-bg);
+  padding: 0.75rem;
+  border-radius: 8px;
+  margin-top: 0.75rem;
+  font-size: 0.85rem;
+}
+
+/* 加载状态 */
+.loading,
+.empty-card {
+  text-align: center;
+  padding: 3rem;
+  color: var(--text-secondary);
+  background: var(--bg-primary);
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+}
+
+.loading-small {
+  padding: 1.5rem;
+  text-align: center;
+  color: var(--text-secondary);
+}
+
+.spinner-small {
+  width: 24px;
+  height: 24px;
+  border: 3px solid var(--border-light);
+  border-top-color: var(--accent-primary);
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+  margin: 0 auto 0.5rem;
+}
+
+.spinner {
+  width: 40px;
+  height: 40px;
+  border: 3px solid var(--border-light);
+  border-top-color: var(--accent-primary);
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+  margin: 0 auto 1rem;
+}
+
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
 </style>