diff --git a/docs/latest/changelog/roadmap.md b/docs/latest/changelog/roadmap.md
index b770fc2c..2a5fc7a4 100644
--- a/docs/latest/changelog/roadmap.md
+++ b/docs/latest/changelog/roadmap.md
@@ -11,7 +11,7 @@
 - 开发与生产环境隔离，构建生产镜像 <Badge type="info" text="0.4" />
 - 集成 LangFuse (观望) 添加用户日志与用户反馈模块，可以在 AgentView 中查看信息
 - 集成 neo4j mcp （或者自己构建工具）
-- 文档解析部分的 markdown 中的图片替换为内部可访问的链接
+- 文档解析部分的 markdown 中的图片替换为内部可访问的链接 (2/4)
 
 ### Bugs
 - 部分异常状态下，智能体的模型名称出现重叠[#279](https://github.com/xerrors/Yuxi-Know/issues/279)
@@ -28,6 +28,7 @@
 - 新增基于知识库文件生成示例问题功能（[#335](https://github.com/xerrors/Yuxi-Know/pull/335#issuecomment-3530976425)）
 - 新增知识库支持文件夹/压缩包上传的功能（[#335](https://github.com/xerrors/Yuxi-Know/pull/335#issuecomment-3530976425)）
 - 新增自定义模型支持、新增 dashscope rerank/embeddings 模型的支持
+- 新增暗色模式支持并调整整体 UI（[#343](https://github.com/xerrors/Yuxi-Know/pull/343)）
 
 ### 修复
 - 修复重排序模型实际未生效的问题
diff --git a/web/src/components/AgentChatComponent.vue b/web/src/components/AgentChatComponent.vue
index 3d046942..f6506864 100644
--- a/web/src/components/AgentChatComponent.vue
+++ b/web/src/components/AgentChatComponent.vue
@@ -30,7 +30,7 @@
           <div type="button" class="agent-nav-btn" v-if="!chatUIStore.isSidebarOpen" @click="toggleSidebar">
             <PanelLeftOpen  class="nav-btn-icon" size="18"/>
           </div>
-          <div
+                    <div
             type="button"
             class="agent-nav-btn"
             v-if="!chatUIStore.isSidebarOpen"
@@ -41,6 +41,15 @@
             <MessageCirclePlus v-else class="nav-btn-icon"  size="18"/>
             <span class="text" :class="{'hide-text': isMediumContainer}">新对话</span>
           </div>
+          <div
+            v-if="!props.singleMode"
+            class="agent-nav-btn"
+            @click="openAgentModal"
+          >
+            <span class="text">{{ currentAgentName || '选择智能体' }}</span>
+            <ChevronDown size="16" class="switch-icon" />
+          </div>
+
         </div>
         <div class="header__right">
           <!-- AgentState 显示按钮 - 只在智能体支持 todo 或 files 能力时显示 -->
@@ -234,7 +243,7 @@ import AgentMessageComponent from '@/components/AgentMessageComponent.vue'
 import ImagePreviewComponent from '@/components/ImagePreviewComponent.vue'
 import ChatSidebarComponent from '@/components/ChatSidebarComponent.vue'
 import RefsComponent from '@/components/RefsComponent.vue'
-import { PanelLeftOpen, MessageCirclePlus, LoaderCircle, Layers } from 'lucide-vue-next';
+import { PanelLeftOpen, MessageCirclePlus, LoaderCircle, Layers, ChevronDown } from 'lucide-vue-next';
 import { handleChatError, handleValidationError } from '@/utils/errorHandler';
 import { ScrollController } from '@/utils/scrollController';
 import { AgentValidator } from '@/utils/agentValidator';
@@ -1432,10 +1441,19 @@ watch(conversations, () => {
     align-items: center;
     padding: 1rem 8px;
 
-    .header__left, .header__right, .header__center {
+    .header__left, .header__right {
       display: flex;
       align-items: center;
     }
+
+    .switch-icon {
+      color: var(--gray-500);
+      transition: all 0.2s ease;
+    }
+
+    .agent-nav-btn:hover .switch-icon {
+      color: var(--main-500);
+    }
   }
 }
 
diff --git a/web/src/components/AgentConfigSidebar.vue b/web/src/components/AgentConfigSidebar.vue
index 0af27ec2..23f1b070 100644
--- a/web/src/components/AgentConfigSidebar.vue
+++ b/web/src/components/AgentConfigSidebar.vue
@@ -22,7 +22,7 @@
           <p class="agent-description">{{ selectedAgent.description }}</p>
         </div>
 
-        <a-divider />
+        <!-- <a-divider /> -->
 
         <div v-if="selectedAgentId && configurableItems" class="config-form-content">
           <!-- 配置表单 -->
@@ -357,7 +357,8 @@ const closeSidebar = () => {
 const getConfigLabel = (key, value) => {
   // console.log(configurableItems)
   if (value.description && value.name !== key) {
-    return `${value.name}（${key}）`;
+    return `${value.name}`;
+    // return `${value.name}（${key}）`;
   }
   return key;
 };
@@ -695,7 +696,14 @@ watch(() => props.isOpen, (newVal) => {
         }
 
         .config-item {
-          margin: 30px 0;
+          background-color: var(--gray-50);
+          padding: 12px;
+          border-radius: 8px;
+          box-shadow: 0px 1px 1px var(--shadow-2);
+
+          :deep(label.form_item_model) {
+            font-weight: 600;
+          }
 
           .config-description {
             margin: 4px 0 8px 0;
diff --git a/web/src/components/ChatSidebarComponent.vue b/web/src/components/ChatSidebarComponent.vue
index f3e50307..972da053 100644
--- a/web/src/components/ChatSidebarComponent.vue
+++ b/web/src/components/ChatSidebarComponent.vue
@@ -2,15 +2,7 @@
   <div class="chat-sidebar" :class="{'sidebar-open': chatUIStore.isSidebarOpen, 'no-transition': isInitialRender}">
     <div class="sidebar-content">
       <div class="sidebar-header">
-        <div class="header-title" v-if="singleMode">{{ selectedAgentName }}</div>
-        <div
-          v-else
-          class="agent-selector"
-          @click="openAgentModal"
-        >
-          <span class="agent-name">{{ selectedAgentName || '选择智能体' }}</span>
-          <ChevronDown size="16" class="switch-icon" />
-        </div>
+        <div class="header-title">{{ branding.name }}</div>
         <div class="header-actions">
           <div class="toggle-sidebar nav-btn" v-if="chatUIStore.isSidebarOpen" @click="toggleCollapse">
             <PanelLeftClose size="20" color="var(--gray-800)"/>
@@ -73,12 +65,17 @@ import {
   MoreOutlined
 } from '@ant-design/icons-vue';
 import { message, Modal } from 'ant-design-vue';
-import { PanelLeftClose, MessageSquarePlus, ChevronDown, LoaderCircle } from 'lucide-vue-next';
+import { PanelLeftClose, MessageSquarePlus, LoaderCircle } from 'lucide-vue-next';
 import dayjs, { parseToShanghai } from '@/utils/time';
 import { useChatUIStore } from '@/stores/chatUI';
+import { useInfoStore } from '@/stores/info';
+import { storeToRefs } from 'pinia';
 
 // 使用 chatUI store
 const chatUIStore = useChatUIStore();
+const infoStore = useInfoStore();
+
+const { branding } = storeToRefs(infoStore);
 
 const props = defineProps({
   currentAgentId: {
@@ -113,13 +110,7 @@ const props = defineProps({
 
 const emit = defineEmits(['create-chat', 'select-chat', 'delete-chat', 'rename-chat', 'toggle-sidebar', 'open-agent-modal']);
 
-const selectedAgentName = computed(() => {
-  if (props.selectedAgentId && props.agents && props.agents.length > 0) {
-    const agent = props.agents.find(a => a.id === props.selectedAgentId);
-    return agent ? agent.name : '';
-  }
-  return '';
-});
+
 
 const groupedChats = computed(() => {
   const groups = {
@@ -221,16 +212,14 @@ const toggleCollapse = () => {
   emit('toggle-sidebar');
 };
 
-const openAgentModal = () => {
-  emit('open-agent-modal');
-};
+
 </script>
 
 <style lang="less" scoped>
 .chat-sidebar {
   width: 0;
   height: 100%;
-  background-color: var(--gray-25);
+  background-color: var(--gray-0);
   transition: all 0.3s ease;
   display: flex;
   flex-direction: column;
@@ -280,7 +269,7 @@ const openAgentModal = () => {
     flex-shrink: 0;
 
     .header-title {
-      font-weight: 500;
+      font-weight: 600;
       font-size: 16px;
       color: var(--gray-900);
       white-space: nowrap;
@@ -479,34 +468,5 @@ const openAgentModal = () => {
   }
 }
 
-// 智能体选择器样式
-.agent-selector {
-  cursor: pointer;
-  font-size: 15px;
-  color: var(--gray-900);
-  transition: color 0.2s ease;
-  font-weight: 500;
-  display: flex;
-  align-items: center;
-  gap: 6px;
 
-  .agent-name {
-    transition: color 0.2s ease;
-  }
-
-  .switch-icon {
-    color: var(--gray-500);
-    transition: all 0.2s ease;
-  }
-
-  &:hover {
-    .agent-name {
-      color: var(--main-500);
-    }
-    .switch-icon {
-      color: var(--main-500);
-      transform: translateY(1px);
-    }
-  }
-}
 </style>
diff --git a/web/src/layouts/AppLayout.vue b/web/src/layouts/AppLayout.vue
index fb137001..cb259606 100644
--- a/web/src/layouts/AppLayout.vue
+++ b/web/src/layouts/AppLayout.vue
@@ -202,7 +202,7 @@ const mainList = [{
       </RouterLink>
     </div>
     <div class="header-mobile">
-      <RouterLink to="/chat" class="nav-item" active-class="active">对话</RouterLink>
+      <RouterLink to="/agent" class="nav-item" active-class="active">对话</RouterLink>
       <RouterLink to="/database" class="nav-item" active-class="active">知识</RouterLink>
       <RouterLink to="/setting" class="nav-item" active-class="active">设置</RouterLink>
     </div>