diff --git a/README.md b/README.md
index d602f52..e846a6f 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,165 @@
-# HouseGPT
\ No newline at end of file
+# ThinkFlow AI
+
+English | [中文](./README.zh-CN.md)
+
+ThinkFlow AI is a lightweight, local-first idea-to-structure workspace. You type a core idea, and the app expands it into a navigable knowledge graph (modules/submodules). Each node supports follow-up expansion, deep-dive details, and optional image generation.
+
+This repository currently uses the package name `housegpt` (historical) while the product name is **ThinkFlow AI**.
+
+## Highlights
+
+- **Idea expansion to graph**: generate a root node and expand into structured child nodes.
+- **Context-aware follow-up**: expand a selected node with an additional requirement (follow-up input).
+- **Deep dive**: generate detailed explanations for a node and show them inline.
+- **Image generation (per node)**: generate/regenerate a visual for a node and preview it fullscreen.
+- **Export to Markdown**: export the current graph as a Markdown outline (including deep-dive content).
+- **Local-first settings**: API mode and endpoints are stored in `localStorage` (no backend needed).
+- **Bilingual UI**: built-in English/Chinese UI with a one-click toggle.
+
+## Tech Stack
+
+- **Vue 3** (Composition API)
+- **Vite 5**
+- **TypeScript**
+- **Tailwind CSS**
+- **VueFlow** (`@vue-flow/core`, `background`, `controls`, `minimap`)
+- **vue-i18n**
+- **lucide-vue-next** (icons)
+
+## Project Structure
+
+Key files you will touch most often:
+
+- `src/App.vue`: app shell, composes the layout and wires UI to business actions.
+- `src/composables/useThinkFlow.ts`: core business logic (graph operations, API calls, persistence).
+- `src/components/TopNav.vue`: top toolbar (layout, export, summary, settings, language toggle).
+- `src/components/BottomBar.vue`: bottom input bar (core idea input + execute).
+- `src/components/WindowNode.vue`: custom VueFlow node UI (expand/deep-dive/image/follow-up).
+- `src/components/SettingsModal.vue`: API mode and custom endpoints configuration UI.
+- `src/i18n/index.ts`: i18n bootstrap (default English; persists language in `localStorage`).
+
+## How It Works (High-Level)
+
+ThinkFlow AI is built around a single composable:
+
+- `useThinkFlow` owns all reactive state for nodes/edges and UI flags.
+- UI components are “thin”: they render and forward events (expand, deep-dive, image, export).
+- The graph is rendered with VueFlow using a custom node type (`window`).
+- Settings are stored in `localStorage`:
+  - language (`language`)
+  - API mode + chat/image endpoints/models/keys
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js **18+** (required by Vite 5)
+- npm (or pnpm/yarn; examples use npm)
+
+### Install
+
+```bash
+npm install
+```
+
+### Run Dev Server
+
+```bash
+npm run dev
+```
+
+Then open the URL printed by Vite (usually `http://localhost:5173`).
+
+### Build
+
+```bash
+npm run build
+```
+
+### Preview Production Build
+
+```bash
+npm run preview
+```
+
+## Configuration
+
+### Custom Mode (Bring Your Own Endpoint)
+
+Open **Settings** in the UI:
+
+- Switch to **Custom**
+- Configure **Text Generation** (chat completion)
+  - `baseUrl` (POST endpoint)
+  - `model`
+  - `apiKey`
+- Configure **Image Generation**
+  - `baseUrl` (POST endpoint)
+  - `model`
+  - `apiKey`
+
+These fields are saved into `localStorage` automatically.
+
+## Features Guide
+
+### 1) Expand From a Core Idea
+
+1. Type a core idea in the bottom input.
+2. Press Enter or click **Execute**.
+3. A root node appears and the app generates child nodes.
+
+### 2) Expand a Specific Node (Follow-Up)
+
+1. Click into a node’s follow-up input.
+2. Type an additional requirement.
+3. Press Enter to expand using the context path (root → current node).
+
+### 3) Deep Dive a Node
+
+Click **Deep Dive** on a node to generate a detailed explanation. The content will be stored on the node and can be reopened without re-requesting (unless you expand further).
+
+### 4) Generate/Preview Node Image
+
+- Click **IMG** to generate an image for a node.
+- Click the image to open fullscreen preview.
+- Use the regenerate action to request a new image.
+
+### 5) Export Markdown
+
+Use **Export** in the top toolbar:
+
+- Root becomes the Markdown title
+- Child nodes become an indented list
+- Deep-dive text is exported as blockquote content under the node
+
+## Third-Party Integrations
+
+- **Microsoft Clarity**: included in `index.html` for analytics.
+- **VueFlow plugins**:
+  - Background (Dots/Lines)
+  - Controls (zoom/fit)
+  - MiniMap (overview)
+
+## Internationalization (i18n)
+
+- Default locale: **English**
+- Supported: `en`, `zh`
+- Language choice is stored in `localStorage` key `language`
+
+To add a new language:
+
+1. Add a JSON file in `src/i18n/locales/`
+2. Register it in `src/i18n/index.ts`
+3. Add a toggle option in the UI (currently a simple EN/ZH switch)
+
+## Common Troubleshooting
+
+- **CORS / Failed to fetch**: if you use a custom endpoint, ensure it allows browser requests and supports proper CORS headers.
+- **401/403**: verify the API key and `Authorization: Bearer ...` format.
+- **429**: rate limited by the provider; retry later.
+
+## Scripts
+
+- `npm run dev`: start Vite dev server
+- `npm run build`: production build
+- `npm run preview`: preview the build output locally
diff --git a/README.zh-CN.md b/README.zh-CN.md
new file mode 100644
index 0000000..182f649
--- /dev/null
+++ b/README.zh-CN.md
@@ -0,0 +1,168 @@
+# ThinkFlow AI
+
+[English](./README.md) | 中文
+
+ThinkFlow AI 是一个轻量、偏本地化（Local-first）的“从想法到结构化图谱”的工作台：输入一个核心想法，应用会把它扩展为可浏览的知识图谱（模块/子模块）。每个节点支持继续追问扩展、深挖详情，以及可选的配图生成。
+
+说明：当前仓库的 npm 包名仍为 `housegpt`（历史原因），产品名称为 **ThinkFlow AI**。
+
+## 亮点功能
+
+- **想法扩展为图谱**：生成根节点并扩展出结构化子节点。
+- **上下文追问扩展**：对选中节点追加需求（follow-up 输入）并基于路径上下文扩展。
+- **深挖详情**：为节点生成更详细的解释/补充内容并在节点内展开展示。
+- **节点配图（可重试）**：为单个节点生成/重新生成图片，并支持全屏预览。
+- **导出 Markdown**：将当前图谱导出为 Markdown 大纲（包含深挖内容）。
+- **本地配置**：API 模式与配置保存到 `localStorage`，无需额外后端。
+- **中英双语**：内置英文/中文 UI，一键切换。
+
+## 技术栈
+
+- **Vue 3**（Composition API）
+- **Vite 5**
+- **TypeScript**
+- **Tailwind CSS**
+- **VueFlow**（`@vue-flow/core` + background/controls/minimap）
+- **vue-i18n**
+- **lucide-vue-next**（图标）
+
+## 项目结构
+
+你最常关注的文件：
+
+- `src/App.vue`：应用壳层，组合布局与事件转发。
+- `src/composables/useThinkFlow.ts`：核心业务逻辑（节点/边操作、API 调用、持久化）。
+- `src/components/TopNav.vue`：顶部工具栏（布局、导出、总结、设置、语言切换）。
+- `src/components/BottomBar.vue`：底部输入条（核心想法输入 + 执行）。
+- `src/components/WindowNode.vue`：自定义节点 UI（扩展/深挖/配图/follow-up）。
+- `src/components/SettingsModal.vue`：API 模式与自定义端点配置 UI。
+- `src/i18n/index.ts`：i18n 初始化（默认英文；语言写入 `localStorage`）。
+
+## 核心原理（高层）
+
+应用围绕一个 composable 构建：
+
+- `useThinkFlow` 统一持有：节点/边数据、UI 状态、网络请求、错误处理、导出能力。
+- 组件尽量“轻”：负责渲染与事件转发（expand、deep-dive、image、export 等）。
+- 画布由 VueFlow 渲染，节点使用自定义类型 `window`。
+- 配置持久化到 `localStorage`：
+  - 语言：`language`
+  - API 模式与 chat/image 的 baseUrl/model/apiKey
+
+## 快速开始
+
+### 环境要求
+
+- Node.js **18+**（Vite 5 要求）
+- npm（也可以用 pnpm/yarn；示例使用 npm）
+
+### 安装依赖
+
+```bash
+npm install
+```
+
+### 启动开发环境
+
+```bash
+npm run dev
+```
+
+打开 Vite 输出的地址（通常是 `http://localhost:5173`）。
+
+### 构建
+
+```bash
+npm run build
+```
+
+### 预览构建产物
+
+```bash
+npm run preview
+```
+
+## 配置说明
+
+### 自定义模式：自带端点（BYO Endpoint）
+
+在界面里打开 **Settings**：
+
+- 切换到 **Custom**
+- 配置 **文本生成（chat completion）**
+  - `baseUrl`（POST 接口地址）
+  - `model`
+  - `apiKey`
+- 配置 **图片生成**
+  - `baseUrl`（POST 接口地址）
+  - `model`
+  - `apiKey`
+
+这些字段会自动保存到 `localStorage`。
+
+## 功能使用说明
+
+### 1）从核心想法生成图谱
+
+1. 在底部输入框输入核心想法
+2. 回车或点击 **Execute**
+3. 生成根节点并自动扩展出子节点
+
+### 2）对某个节点继续扩展（Follow-Up）
+
+1. 在节点的 follow-up 输入框填写“追加需求”
+2. 回车触发扩展
+3. 扩展时会携带“从根到当前节点”的上下文路径，保证更贴合当前分支
+
+### 3）深挖节点详情
+
+点击节点上的 **Deep Dive**：
+
+- 生成更长的解释/拓展内容
+- 内容会写回节点并可重复打开（不必每次都重新请求）
+
+### 4）节点配图与预览
+
+- 点击节点上的 **IMG** 生成配图
+- 点击图片打开全屏预览
+- 支持在预览层或节点上进行重新生成
+
+### 5）导出 Markdown
+
+顶部工具栏点击 **Export**：
+
+- 根节点作为一级标题
+- 子节点按缩进列表输出
+- 深挖内容作为引用块输出到对应节点下方
+
+## 第三方集成与插件
+
+- **Microsoft Clarity**：在 `index.html` 中引入，用于分析与统计。
+- **VueFlow 插件**：
+  - Background（Dots/Lines）
+  - Controls（缩放/适配）
+  - MiniMap（总览）
+
+## 国际化（i18n）
+
+- 默认语言：**英文**
+- 已支持：`en`、`zh`
+- 语言选择写入 `localStorage` 的 `language`
+
+新增语言建议步骤：
+
+1. 在 `src/i18n/locales/` 添加对应 JSON
+2. 在 `src/i18n/index.ts` 注册 messages
+3. 在 UI 中扩展语言切换逻辑（目前为 EN/ZH 双向切换）
+
+## 常见问题排查
+
+- **CORS / Failed to fetch**：使用自定义端点时，确保支持浏览器跨域请求并正确返回 CORS 响应头。
+- **401/403**：检查 API Key 是否正确，以及是否使用 `Authorization: Bearer ...`。
+- **429**：触发限流，稍后重试。
+
+## Scripts
+
+- `npm run dev`：启动开发服务器
+- `npm run build`：构建生产包
+- `npm run preview`：本地预览构建产物
diff --git a/src/App.vue b/src/App.vue
index 7dde63b..e108fb8 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,908 +1,105 @@
 <script setup lang="ts">
-import { ref, reactive, h, watch, computed } from 'vue'
+/**
+ * 应用入口组件
+ * - 负责组合：顶部导航、画布（VueFlow）、节点渲染、底部输入条、各类弹窗
+ * - 业务状态与动作全部由 useThinkFlow 提供，App.vue 仅做组装与事件转发
+ */
+
+// i18n：提供 t/locale，并把 locale 传入业务层做持久化
 import { useI18n } from 'vue-i18n'
-const { t, locale } = useI18n()
-import {
-    Sparkles,
-    Search,
-    Folder,
-    Monitor,
-    BookOpen,
-    Code,
-    Sun,
-    Globe,
-    LogIn,
-    Plus,
-    MousePointer2,
-    Zap,
-    ArrowRight,
-    RefreshCw,
-    Image as ImageIcon,
-    Download,
-    Settings,
-    Palette,
-    Grid3X3,
-    Trash2,
-    X,
-    Maximize2,
-    Terminal,
-    ChevronRight,
-    ChevronDown,
-    ChevronUp,
-    Menu,
-    MoreHorizontal,
-    LayoutDashboard,
-    Focus,
-    Target,
-    Map,
-    Link as LinkIcon,
-    Shield,
-    Key,
-    Activity
-} from 'lucide-vue-next'
-import { VueFlow, useVueFlow, Position, MarkerType, Handle } from '@vue-flow/core'
+
+// 画布：VueFlow 与可选插件
+import { VueFlow } from '@vue-flow/core'
 import { Background, BackgroundVariant } from '@vue-flow/background'
 import { Controls } from '@vue-flow/controls'
 import { MiniMap } from '@vue-flow/minimap'
 
-// 导入 VueFlow 样式
+// VueFlow 内置样式（必须引入，否则组件样式缺失）
 import '@vue-flow/core/dist/style.css'
 import '@vue-flow/core/dist/theme-default.css'
 import '@vue-flow/minimap/dist/style.css'
 import '@vue-flow/controls/dist/style.css'
 
-// API 配置
-const API_KEY = ''
+// 页面 UI 子组件
+import BottomBar from './components/BottomBar.vue'
+import ImagePreviewModal from './components/ImagePreviewModal.vue'
+import ResetConfirmModal from './components/ResetConfirmModal.vue'
+import SettingsModal from './components/SettingsModal.vue'
+import SummaryModal from './components/SummaryModal.vue'
+import TopNav from './components/TopNav.vue'
+import WindowNode from './components/WindowNode.vue'
 
-// API 详情配置
-const apiConfig = reactive({
-    mode: localStorage.getItem('api_mode') || 'default', // 'default' | 'custom'
-    chat: {
-        baseUrl: localStorage.getItem('chat_baseUrl') || '',
-        model: localStorage.getItem('chat_model') || '',
-        apiKey: localStorage.getItem('chat_apiKey') || ''
-    },
-    image: {
-        baseUrl: localStorage.getItem('image_baseUrl') || '',
-        model: localStorage.getItem('image_model') || '',
-        apiKey: localStorage.getItem('image_apiKey') || ''
-    }
-})
+// 业务层：统一的状态与动作入口
+import { useThinkFlow } from './composables/useThinkFlow'
 
-// 默认配置常量
-const DEFAULT_CONFIG = {
-    chat: {
-        baseUrl: 'https://thinkflow.lz-t.top/chat/completions',
-        model: 'glm-4-flash',
-        apiKey: ''
-    },
-    image: {
-        baseUrl: 'https://thinkflow.lz-t.top/images/generations',
-        model: 'cogview-3-flash',
-        apiKey: ''
-    }
-}
-
-// 监听配置变化并保存
-watch(
-    () => locale.value,
-    newVal => {
-        localStorage.setItem('language', newVal)
-    }
-)
-
-watch(
-    () => apiConfig,
-    newVal => {
-        localStorage.setItem('api_mode', newVal.mode)
-        localStorage.setItem('chat_baseUrl', newVal.chat.baseUrl)
-        localStorage.setItem('chat_model', newVal.chat.model)
-        localStorage.setItem('chat_apiKey', newVal.chat.apiKey)
-        localStorage.setItem('image_baseUrl', newVal.image.baseUrl)
-        localStorage.setItem('image_model', newVal.image.model)
-        localStorage.setItem('image_apiKey', newVal.image.apiKey)
-    },
-    { deep: true }
-)
-
-const showSettings = ref(false)
-
-// VueFlow 实例
-const { addNodes, addEdges, onConnect, setNodes, setEdges, nodes: flowNodes, edges: flowEdges, updateNode, fitView, onNodeDragStart, onNodeDragStop } = useVueFlow()
-
-// 状态管理
-const ideaInput = ref('')
-const isLoading = ref(false)
-const isToolsExpanded = ref(false)
-const hoveredNodeId = ref<string | null>(null)
-const focusedNodeId = ref<string | null>(null)
-const draggingNodeId = ref<string | null>(null)
-const previewImageUrl = ref<string | null>(null)
-const showResetConfirm = ref(false)
-const showSummaryModal = ref(false)
-const isSummarizing = ref(false)
-const summaryContent = ref('')
-
-// 画布控制状态
-const panOnDrag = ref(true)
-const isSpacePressed = ref(false)
-
-// 键盘监听：按住空格键开启抓手拖拽
-window.addEventListener('keydown', e => {
-    if (e.code === 'Space' && !['INPUT', 'TEXTAREA'].includes((e.target as HTMLElement).tagName)) {
-        isSpacePressed.value = true
-        panOnDrag.value = true
-    }
-})
-
-window.addEventListener('keyup', e => {
-    if (e.code === 'Space') {
-        isSpacePressed.value = false
-    }
-})
-
-// 拖拽监听
-onNodeDragStart(e => {
-    draggingNodeId.value = e.node.id
-})
-
-onNodeDragStop(() => {
-    draggingNodeId.value = null
-})
-
-// 计算当前是否有节点处于“活跃”状态（被选中、聚焦、拖拽或正在生成）
-const activeNodeId = computed(() => {
-    const expandingNode = flowNodes.value.find(n => n.data.isExpanding)
-    const selectedNode = flowNodes.value.find(n => n.selected)
-    return expandingNode?.id || selectedNode?.id || draggingNodeId.value || focusedNodeId.value
-})
+const { t, locale } = useI18n()
 
 /**
- * 递归获取所有子节点 ID
+ * 从业务层拿到全局状态与动作。
+ * 说明：
+ * - 展开/深挖/图片/总结等网络请求与数据写回都在 useThinkFlow 内完成
+ * - App.vue 只负责把这些能力传给对应 UI 组件
  */
-const getDescendantIds = (nodeId: string, ids: Set<string> = new Set()): Set<string> => {
-    flowEdges.value.forEach(edge => {
-        if (edge.source === nodeId) {
-            ids.add(edge.target)
-            getDescendantIds(edge.target, ids)
-        }
-    })
-    return ids
-}
-
-// 计算当前活跃节点的相关路径（向上追溯到根，向下包含所有子孙）
-const activePath = computed(() => {
-    const nodeIds = new Set<string>()
-    const edgeIds = new Set<string>()
-
-    if (!activeNodeId.value) return { nodeIds, edgeIds }
-
-    const targetId = activeNodeId.value
-    nodeIds.add(targetId)
-
-    // 1. 向上追溯到根节点
-    let currentId = targetId
-    while (currentId) {
-        const edge = flowEdges.value.find(e => e.target === currentId)
-        if (edge) {
-            edgeIds.add(edge.id)
-            nodeIds.add(edge.source)
-            currentId = edge.source
-        } else {
-            break
-        }
-    }
-
-    // 2. 向下包含所有子孙节点和相关连线
-    const descendantIds = getDescendantIds(targetId)
-    descendantIds.forEach(id => nodeIds.add(id))
-
-    // 3. 收集子孙节点之间的连线
-    flowEdges.value.forEach(edge => {
-        if (nodeIds.has(edge.source) && nodeIds.has(edge.target)) {
-            edgeIds.add(edge.id)
-        }
-    })
-
-    return { nodeIds, edgeIds }
-})
-
-// 画布配置
-const config = reactive({
-    edgeColor: '#fed7aa',
-    edgeStyle: 'smoothstep',
-    backgroundVariant: BackgroundVariant.Lines,
-    showControls: true,
-    showMiniMap: true
-})
-
-const lastAppliedStatus = ref('')
-
-// 监听 activePath 和配置变化，动态更新连线状态
-watch(
-    [() => activeNodeId.value, () => config.edgeColor, () => flowEdges.value.length, () => flowNodes.value.some(n => n.data.isExpanding)],
-    ([newNodeId, newColor, newLength, anyExpanding]) => {
-        const { edgeIds } = activePath.value
-        const edgeIdsStr = Array.from(edgeIds).sort().join(',')
-
-        // 状态标识：包含高亮边、颜色、以及是否有节点在发散（影响动画）
-        const currentStatus = `${edgeIdsStr}-${newColor}-${anyExpanding}`
-        if (lastAppliedStatus.value === currentStatus) return
-        lastAppliedStatus.value = currentStatus
-
-        setEdges(
-            flowEdges.value.map(edge => {
-                const isHighlighted = edgeIds.has(edge.id)
-                const isExpanding = !!flowNodes.value.find(n => n.id === edge.source)?.data.isExpanding
-
-                return {
-                    ...edge,
-                    animated: isHighlighted || isExpanding,
-                    style: {
-                        ...edge.style,
-                        stroke: isHighlighted ? newColor : `${newColor}33`,
-                        strokeWidth: isHighlighted ? 3 : 2,
-                        transition: 'all 0.3s ease'
-                    }
-                }
-            })
-        )
-    },
-    { immediate: true }
-)
+const {
+    apiConfig,
+    showSettings,
+    ideaInput,
+    isLoading,
+    previewImageUrl,
+    showResetConfirm,
+    showSummaryModal,
+    isSummarizing,
+    summaryContent,
+    panOnDrag,
+    isSpacePressed,
+    config,
+    flowNodes,
+    activeNodeId,
+    activePath,
+    updateNode,
+    fitView,
+    resetLayout,
+    centerRoot,
+    startNewSession,
+    executeReset,
+    generateSummary,
+    exportMarkdown,
+    generateNodeImage,
+    deepDive,
+    expandIdea
+} = useThinkFlow({ t, locale })
 
 /**
- * 统一错误处理
+ * 切换语言（zh <-> en）
  */
-const getErrorMessage = (error: any) => {
-    if (error.name === 'TypeError' && error.message === 'Failed to fetch') {
-        return t('common.error.cors')
-    }
-    if (error.status === 429) return t('common.error.rateLimit')
-    if (error.status === 400) return t('common.error.badRequest')
-    if (error.status >= 500) return t('common.error.serverError')
-    return error.message || t('common.error.unknown')
+const toggleLocale = () => {
+    locale.value = locale.value === 'zh' ? 'en' : 'zh'
 }
 
 /**
- * 聚焦到根节点
+ * 视图适配：缩放到当前内容的合适视野
  */
-const centerRoot = () => {
-    const rootNode = flowNodes.value.find(n => n.data.type === 'root')
-    if (rootNode) {
-        fitView({ nodes: [rootNode.id], padding: 2, duration: 800 })
-    }
-}
-
-/**
- * 重置布局
- */
-const resetLayout = () => {
-    // 找到根节点
-    const rootNode = flowNodes.value.find(n => n.data.type === 'root')
-    if (!rootNode) return
-
-    // 重新计算所有节点位置
-    const visited = new Set<string>()
-    const layoutNode = (nodeId: string, x: number, y: number) => {
-        if (visited.has(nodeId)) return
-        visited.add(nodeId)
-
-        const node = flowNodes.value.find(n => n.id === nodeId)
-        if (node) {
-            node.position = { x, y }
-
-            // 找到所有子节点
-            const childEdges = flowEdges.value.filter(e => e.source === nodeId)
-            childEdges.forEach((edge, index) => {
-                const offsetX = 450
-                // 计算子节点垂直分布
-                const totalHeight = (childEdges.length - 1) * 280
-                const startY = y - totalHeight / 2
-                const offsetY = index * 280
-
-                layoutNode(edge.target, x + offsetX, startY + offsetY)
-            })
-        }
-    }
-
-    layoutNode(rootNode.id, 50, 300)
-
-    // 动画过渡到合适视图
-    setTimeout(() => {
-        fitView({ padding: 0.2, duration: 800 })
-    }, 100)
-}
-
-/**
- * 导出为图片
- */
-const exportMarkdown = () => {
-    if (flowNodes.value.length === 0) return
-
-    // 找到根节点
-    const rootNode = flowNodes.value.find(n => n.data.type === 'root')
-    if (!rootNode) return
-
-    let markdown = `# ${rootNode.data.label}\n\n`
-    
-    // 递归构建 Markdown 内容
-    const buildMarkdown = (parentId: string, level: number) => {
-        const children = flowEdges.value
-            .filter(e => e.source === parentId)
-            .map(e => flowNodes.value.find(n => n.id === e.target))
-            .filter(n => n !== undefined)
-
-        children.forEach(child => {
-            const indent = '  '.repeat(level - 1)
-            markdown += `${indent}- ${child!.data.label}\n`
-            if (child!.data.detailedContent) {
-                const detailIndent = '  '.repeat(level)
-                markdown += `${detailIndent}> ${child!.data.detailedContent.replace(/\n/g, `\n${detailIndent}> `)}\n`
-            }
-            buildMarkdown(child!.id, level + 1)
-        })
-    }
-
-    buildMarkdown(rootNode.id, 1)
-
-    const blob = new Blob([markdown], { type: 'text/markdown' })
-    const url = URL.createObjectURL(blob)
-    const link = document.createElement('a')
-    link.download = `thinkflow-${rootNode.data.label}-${Date.now()}.md`
-    link.href = url
-    link.click()
-    URL.revokeObjectURL(url)
-}
-
-/**
- * 生成全篇总结
- */
-const generateSummary = async () => {
-    if (flowNodes.value.length === 0) return
-
-    showSummaryModal.value = true
-    isSummarizing.value = true
-    summaryContent.value = ''
-
-    // 收集所有节点信息
-    const nodesInfo = flowNodes.value.map(n => ({
-        label: n.data.label,
-        description: n.data.description,
-        type: n.data.type
-    }))
-
-    const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
-    const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
-
-    try {
-        const response = await fetch(useConfig.baseUrl, {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json',
-                Authorization: `Bearer ${finalApiKey}`
-            },
-            body: JSON.stringify({
-                model: useConfig.model,
-                messages: [
-                    { 
-                        role: 'user', 
-                        content: t('prompts.summaryPrompt', { 
-                            nodes: JSON.stringify(nodesInfo, null, 2) 
-                        }) 
-                    }
-                ]
-            })
-        })
-
-        if (!response.ok) throw new Error('Summary request failed')
-        
-        const data = await response.json()
-        summaryContent.value = data.choices[0].message.content
-    } catch (error) {
-        console.error('Summary Generation Error:', error)
-        summaryContent.value = t('common.error.unknown')
-    } finally {
-        isSummarizing.value = false
-    }
-}
-
-/**
- * 调用智谱AI生成图片
- */
-const generateNodeImage = async (nodeId: string, prompt: string) => {
-    const node = flowNodes.value.find(n => n.id === nodeId)
-    if (!node || node.data.isImageLoading) return
-
-    // 激活节点
-    updateNode(nodeId, { selected: true, zIndex: 1000 })
-    
-    updateNode(nodeId, { data: { ...node.data, isImageLoading: true, error: null } })
-
-    const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.image : apiConfig.image
-    // 自定义模式下完全使用用户输入，不进行项目 Key 兜底
-    const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
-
-    try {
-        const response = await fetch(useConfig.baseUrl, {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json',
-                Authorization: `Bearer ${finalApiKey}`
-            },
-            body: JSON.stringify({
-                model: useConfig.model,
-                prompt: t('prompts.image', { prompt })
-            })
-        })
-
-        if (!response.ok) {
-            const error: any = new Error('Image request failed')
-            error.status = response.status
-            throw error
-        }
-        const data = await response.json()
-        const imageUrl = data.data[0].url
-
-        updateNode(nodeId, { data: { ...node.data, imageUrl, isImageLoading: false, error: null } })
-    } catch (error: any) {
-        console.error('Image Generation Error:', error)
-        updateNode(nodeId, { data: { ...node.data, isImageLoading: false, error: getErrorMessage(error) } })
-    }
-}
-
-/**
- * 深度解析节点内容
- */
-const deepDive = async (nodeId: string, topic: string) => {
-    const node = flowNodes.value.find(n => n.id === nodeId)
-    if (!node) return
-
-    // 激活节点并置顶
-    updateNode(nodeId, { selected: true, zIndex: 1000 })
-
-    // 如果已经有内容且当前是收起状态，则直接展开
-    if (node.data.detailedContent && !node.data.isDetailExpanded) {
-        updateNode(nodeId, { data: { ...node.data, isDetailExpanded: true } })
-        return
-    }
-
-    // 如果已经在加载，则不重复请求
-    if (node.data.isDeepDiving) return
-
-    updateNode(nodeId, { data: { ...node.data, isDeepDiving: true, isDetailExpanded: true, error: null } })
-
-    const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
-    const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
-
-    try {
-        const response = await fetch(useConfig.baseUrl, {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json',
-                Authorization: `Bearer ${finalApiKey}`
-            },
-            body: JSON.stringify({
-                model: useConfig.model,
-                messages: [{ role: 'user', content: t('prompts.deepDivePrompt', { topic }) }]
-            })
-        })
-
-        if (!response.ok) {
-            const error: any = new Error('Deep dive request failed')
-            error.status = response.status
-            throw error
-        }
-        const data = await response.json()
-        const content = data.choices[0].message.content
-
-        updateNode(nodeId, { data: { ...node.data, detailedContent: content, isDeepDiving: false, error: null } })
-    } catch (error: any) {
-        console.error('Deep Dive Error:', error)
-        updateNode(nodeId, { data: { ...node.data, isDeepDiving: false, error: getErrorMessage(error) } })
-    }
-}
-
-/**
- * 递归获取从根节点到当前节点的路径
- */
-const findPathToNode = (nodeId: string): string[] => {
-    const path: string[] = []
-    let currentId = nodeId
-
-    while (currentId) {
-        const node = flowNodes.value.find(n => n.id === currentId)
-        if (node) {
-            path.unshift(`${node.data.label} (${node.data.description})`)
-            // 查找连入该节点的边
-            const edge = flowEdges.value.find(e => e.target === currentId)
-            currentId = edge ? edge.source : ''
-        } else {
-            break
-        }
-    }
-    return path
-}
-
-/**
- * 调用智谱AI生成思维发散节点
- */
-const expandIdea = async (param?: any, customInput?: string) => {
-    // 判断是点击了节点上的按钮还是主输入框
-    const parentNode = param && param.id ? param : undefined
-    const text = customInput || (parentNode ? parentNode.data.label : ideaInput.value)
-
-    if (!text || (parentNode ? parentNode.data.isExpanding : isLoading.value)) return
-
-    let currentParentId = parentNode?.id
-
-    // 如果是第一次生成，立即创建根节点并清空画布
-    if (!parentNode) {
-        isLoading.value = true
-        setNodes([])
-        setEdges([])
-
-        const rootId = 'root-' + Date.now()
-        currentParentId = rootId
-
-        addNodes({
-            id: rootId,
-            type: 'window',
-            position: { x: 50, y: 300 },
-            data: {
-                label: text,
-                description: t('node.coreIdea'),
-                type: 'root',
-                isExpanding: true,
-                isTitleExpanded: false,
-                followUp: '',
-                error: null
-            },
-            sourcePosition: Position.Right,
-            targetPosition: Position.Left
-        })
-
-        ideaInput.value = ''
-    } else {
-        const node = flowNodes.value.find(n => n.id === parentNode.id)
-        if (node) {
-            updateNode(parentNode.id, {
-                    data: {
-                        ...node.data,
-                        isExpanding: true,
-                        isDetailExpanded: false, // 开始发散时隐藏详情
-                        error: null
-                    }
-                })
-        }
-    }
-
-    const systemPrompt = t('prompts.system')
-
-    let userMessage = ''
-    if (parentNode) {
-        const path = findPathToNode(parentNode.id)
-        userMessage = `[${t('prompts.contextPath')}]: ${path.join(' -> ')}\n[${t('prompts.selectedNode')}]: ${parentNode.data.label}\n[${t('prompts.newRequirement')}]: ${customInput || t('prompts.continue')}`
-    } else {
-        userMessage = `${t('prompts.coreIdeaPrefix')}: ${text}`
-    }
-
-    const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
-    // 自定义模式下完全使用用户输入，不进行项目 Key 兜底
-    const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
-
-    try {
-        const response = await fetch(useConfig.baseUrl, {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json',
-                Authorization: `Bearer ${finalApiKey}`
-            },
-            body: JSON.stringify({
-                model: useConfig.model,
-                messages: [
-                    { role: 'system', content: systemPrompt },
-                    { role: 'user', content: userMessage }
-                ],
-                response_format: { type: 'json_object' },
-                temperature: 0.8
-            })
-        })
-
-        if (!response.ok) {
-            const error: any = new Error('AI request failed')
-            error.status = response.status
-            throw error
-        }
-        const data = await response.json()
-        const result = JSON.parse(data.choices[0].message.content)
-
-        // 使用最新的节点位置计算子节点位置
-        const parentNodeObj = flowNodes.value.find(n => n.id === currentParentId)
-        const startX = parentNodeObj ? parentNodeObj.position.x : 50
-        const startY = parentNodeObj ? parentNodeObj.position.y : 300
-
-        processSubNodes(result.nodes, currentParentId, startX, startY)
-
-        // 首次输入后，优化缩放比例：展示根节点和大约3个二级节点
-        if (!parentNode) {
-            setTimeout(() => {
-                const childEdges = flowEdges.value.filter(e => e.source === currentParentId)
-                const childIds = childEdges.map(e => e.target)
-                
-                // 选取前3个二级节点作为缩放参考，这样可以保证缩放比例适中（约看到3个二级的大小）
-                const nodesToFit = [currentParentId, ...childIds.slice(0, 3)]
-                
-                fitView({
-                    nodes: nodesToFit,
-                    padding: 0.25,
-                    duration: 1000
-                })
-            }, 100)
-        }
-    } catch (error: any) {
-        console.error('Expansion Error:', error)
-        const node = flowNodes.value.find(n => n.id === currentParentId)
-        if (node) {
-            updateNode(currentParentId, { data: { ...node.data, error: getErrorMessage(error) } })
-        }
-    } finally {
-        const node = flowNodes.value.find(n => n.id === currentParentId)
-        if (node) {
-            node.data.isExpanding = false
-        }
-        isLoading.value = false
-    }
-}
-
-const processSubNodes = (subNodes: any[], parentId: string, baseX: number, baseY: number) => {
-    subNodes.forEach((item: any, index: number) => {
-        const childId = `node-${Date.now()}-${index}`
-        const offsetX = 450
-        const offsetY = (index - (subNodes.length - 1) / 2) * 280
-
-        addNodes({
-            id: childId,
-            type: 'window',
-            position: { x: baseX + offsetX, y: baseY + offsetY },
-            data: {
-                label: item.text,
-                description: item.description,
-                type: 'child',
-                followUp: '',
-                isExpanding: false,
-                isImageLoading: false,
-                isTitleExpanded: false,
-                error: null
-            },
-            sourcePosition: Position.Right,
-            targetPosition: Position.Left
-        })
-
-        addEdges({
-            id: `e-${parentId}-${childId}`,
-            source: parentId,
-            target: childId,
-            animated: true,
-            style: { stroke: config.edgeColor, strokeWidth: 2 },
-            markerEnd: MarkerType.ArrowClosed
-        })
-    })
-}
-
-const executeReset = () => {
-    ideaInput.value = ''
-    setNodes([])
-    setEdges([])
-    showResetConfirm.value = false
-}
-
-const startNewSession = () => {
-    if (flowNodes.value.length > 0) {
-        showResetConfirm.value = true
-        return
-    }
-    executeReset()
+const fitToView = () => {
+    fitView({ padding: 0.2, duration: 800 })
 }
 </script>
 
 <template>
     <div class="h-screen w-screen bg-white font-mono text-slate-800 relative overflow-hidden flex flex-col selection:bg-orange-100">
-        <!-- 顶部导航栏 (工具栏) -->
-        <nav class="flex-none bg-white/80 backdrop-blur-md border-b border-slate-200 px-3 md:px-6 py-2 md:py-3 flex items-center justify-between shadow-sm z-50">
-            <div class="flex items-center gap-2 md:gap-6 flex-grow mr-2">
-                <div class="flex items-center gap-2 flex-shrink-0">
-                    <div class="w-3 h-3 bg-orange-500 rounded-sm rotate-45"></div>
-                    <span class="font-black text-slate-900 tracking-tighter text-base md:text-lg">ThinkFlow</span>
-                </div>
+        <TopNav
+            :t="t"
+            :locale="locale"
+            :config="config"
+            :onFit="fitToView"
+            :onResetLayout="resetLayout"
+            :onCenterRoot="centerRoot"
+            :onStartNewSession="startNewSession"
+            :onGenerateSummary="generateSummary"
+            :onExportMarkdown="exportMarkdown"
+            :onOpenSettings="() => (showSettings = true)"
+            @toggle-locale="toggleLocale"
+        />
 
-                <div class="h-6 w-[1px] bg-slate-200 mx-1 md:mx-2 flex-shrink-0"></div>
-
-                <!-- 桌面端工具按钮组 -->
-                <div class="hidden md:flex items-center gap-2">
-
-                    <!-- 布局控制 -->
-                    <button @click="fitView({ padding: 0.2, duration: 800 })" class="toolbar-btn text-blue-500 hover:bg-blue-50 border-blue-100 flex-shrink-0" :title="t('nav.fit')">
-                        <Focus class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.fit') }}</span>
-                    </button>
-
-                    <button @click="resetLayout" class="toolbar-btn text-purple-500 hover:bg-purple-50 border-purple-100 flex-shrink-0" :title="t('nav.layout')">
-                        <LayoutDashboard class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.layout') }}</span>
-                    </button>
-
-                    <button @click="centerRoot" class="toolbar-btn text-orange-500 hover:bg-orange-50 border-orange-100 flex-shrink-0" :title="t('nav.center')">
-                        <Target class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.center') }}</span>
-                    </button>
-
-                    <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
-
-                    <!-- 重置画布 -->
-                    <button @click="startNewSession" class="toolbar-btn text-red-500 hover:bg-red-50 border-red-100 flex-shrink-0" :title="t('nav.reset')">
-                        <Trash2 class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.reset') }}</span>
-                    </button>
-
-                    <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
-
-                    <!-- 连线颜色 -->
-                    <div class="flex items-center gap-2 px-2 md:px-3 py-1.5 bg-slate-50 rounded-lg border border-slate-100 flex-shrink-0">
-                        <Palette class="w-3 h-3 md:w-3.5 h-3.5 text-slate-400" />
-                        <input type="color" v-model="config.edgeColor" class="w-3.5 h-3.5 md:w-4 h-4 rounded cursor-pointer bg-transparent border-none" />
-                        <span class="text-[9px] md:text-[10px] font-bold text-slate-500 uppercase">{{ t('nav.edge') }}</span>
-                    </div>
-
-                    <!-- 背景样式 -->
-                    <select v-model="config.backgroundVariant" class="toolbar-select flex-shrink-0">
-                        <option :value="BackgroundVariant.Lines">{{ t('nav.lines') }}</option>
-                        <option :value="BackgroundVariant.Dots">{{ t('nav.dots') }}</option>
-                    </select>
-
-                    <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
-
-                    <!-- 小地图开关 -->
-                    <button
-                        @click="config.showMiniMap = !config.showMiniMap"
-                        class="toolbar-btn border-slate-100 flex-shrink-0"
-                        :class="config.showMiniMap ? 'text-blue-500 bg-blue-50 border-blue-100' : 'text-slate-400 hover:text-slate-600'"
-                        :title="t('nav.map')"
-                    >
-                        <Map class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.map') }}</span>
-                    </button>
-
-                    <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
-
-                    <!-- 总结功能 -->
-                    <button @click="generateSummary" class="toolbar-btn text-orange-600 hover:bg-orange-50 border-orange-100 flex-shrink-0" :title="t('nav.summary')">
-                        <Sparkles class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.summary') }}</span>
-                    </button>
-
-                    <!-- 导出选项 -->
-                    <button @click="exportMarkdown" class="toolbar-btn text-indigo-600 hover:bg-indigo-50 border-indigo-100 flex-shrink-0" :title="t('nav.export')">
-                        <Download class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('nav.export') }}</span>
-                    </button>
-
-                    <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
-
-                    <!-- 设置按钮 -->
-                    <button @click="showSettings = true" class="toolbar-btn text-slate-600 hover:bg-slate-50 border-slate-100 flex-shrink-0">
-                        <Settings class="w-3.5 h-3.5 md:w-4 h-4" />
-                        <span>{{ t('common.settings') }}</span>
-                    </button>
-                </div>
-
-                <!-- 移动端工具切换按钮 -->
-                <div class="md:hidden flex items-center">
-                    <button 
-                        @click="isToolsExpanded = !isToolsExpanded"
-                        class="flex items-center gap-2 px-3 py-1.5 bg-slate-50 border border-slate-200 rounded-lg text-slate-600 active:bg-slate-100 transition-colors"
-                    >
-                        <Menu v-if="!isToolsExpanded" class="w-4 h-4" />
-                        <X v-else class="w-4 h-4" />
-                        <span class="text-xs font-bold">{{ t('common.tools' || 'Tools') }}</span>
-                        <ChevronDown v-if="!isToolsExpanded" class="w-3 h-3 opacity-50" />
-                        <ChevronUp v-else class="w-3 h-3 opacity-50" />
-                    </button>
-                </div>
-            </div>
-
-            <div class="flex items-center gap-2 md:gap-3 flex-shrink-0">
-                <button
-                    @click="locale = locale === 'zh' ? 'en' : 'zh'"
-                    class="p-1.5 md:p-2 hover:bg-slate-100 rounded-md transition-colors text-slate-400 font-bold text-[10px] md:text-xs flex items-center gap-1"
-                >
-                    <Globe class="w-3 h-3 md:w-3.5 h-3.5" /> {{ locale === 'zh' ? 'EN' : 'ZH' }}
-                </button>
-                <button v-if="false" 
-                    class="flex items-center gap-1.5 md:gap-2 px-3 md:px-4 py-1.5 md:py-2 bg-slate-900 text-white rounded-lg md:rounded-xl text-[10px] md:text-xs font-black tracking-widest hover:bg-slate-800 transition-all shadow-lg shadow-slate-200"
-                >
-                    <span>{{ t('common.signin') }}</span> <LogIn class="w-3 h-3 md:w-3.5 h-3.5 md:ml-1" />
-                </button>
-            </div>
-        </nav>
-
-        <!-- 移动端折叠工具栏 -->
-        <Transition
-            enter-active-class="transition duration-200 ease-out"
-            enter-from-class="transform -translate-y-4 opacity-0"
-            enter-to-class="transform translate-y-0 opacity-100"
-            leave-active-class="transition duration-150 ease-in"
-            leave-from-class="transform translate-y-0 opacity-100"
-            leave-to-class="transform -translate-y-4 opacity-0"
-        >
-            <div v-if="isToolsExpanded" class="md:hidden absolute top-[57px] left-0 right-0 bg-white/95 backdrop-blur-md border-b border-slate-200 shadow-xl z-40 py-4 px-4 flex flex-wrap gap-3 justify-center">
-                <!-- 布局控制 -->
-                <button @click="fitView({ padding: 0.2, duration: 800 }); isToolsExpanded = false" class="toolbar-btn text-blue-500 hover:bg-blue-50 border-blue-100" :title="t('nav.fit')">
-                    <Focus class="w-4 h-4" />
-                    <span>{{ t('nav.fit') }}</span>
-                </button>
-
-                <button @click="resetLayout(); isToolsExpanded = false" class="toolbar-btn text-purple-500 hover:bg-purple-50 border-purple-100" :title="t('nav.layout')">
-                    <LayoutDashboard class="w-4 h-4" />
-                    <span>{{ t('nav.layout') }}</span>
-                </button>
-
-                <button @click="centerRoot(); isToolsExpanded = false" class="toolbar-btn text-orange-500 hover:bg-orange-50 border-orange-100" :title="t('nav.center')">
-                    <Target class="w-4 h-4" />
-                    <span>{{ t('nav.center') }}</span>
-                </button>
-
-                <!-- 重置画布 -->
-                <button @click="startNewSession(); isToolsExpanded = false" class="toolbar-btn text-red-500 hover:bg-red-50 border-red-100" :title="t('nav.reset')">
-                    <Trash2 class="w-4 h-4" />
-                    <span>{{ t('nav.reset') }}</span>
-                </button>
-
-                <!-- 连线颜色 -->
-                <div class="flex items-center gap-2 px-3 py-1.5 bg-slate-50 rounded-lg border border-slate-100">
-                    <Palette class="w-4 h-4 text-slate-400" />
-                    <input type="color" v-model="config.edgeColor" class="w-4 h-4 rounded cursor-pointer bg-transparent border-none" />
-                    <span class="text-[10px] font-bold text-slate-500 uppercase">{{ t('nav.edge') }}</span>
-                </div>
-
-                <!-- 背景样式 -->
-                <select v-model="config.backgroundVariant" class="toolbar-select">
-                    <option :value="BackgroundVariant.Lines">{{ t('nav.lines') }}</option>
-                    <option :value="BackgroundVariant.Dots">{{ t('nav.dots') }}</option>
-                </select>
-
-                <!-- 小地图开关 -->
-                <button
-                    @click="config.showMiniMap = !config.showMiniMap"
-                    class="toolbar-btn border-slate-100"
-                    :class="config.showMiniMap ? 'text-blue-500 bg-blue-50 border-blue-100' : 'text-slate-400 hover:text-slate-600'"
-                    :title="t('nav.map')"
-                >
-                    <Map class="w-4 h-4" />
-                    <span>{{ t('nav.map') }}</span>
-                </button>
-
-                <!-- 总结功能 -->
-                <button @click="generateSummary(); isToolsExpanded = false" class="toolbar-btn text-orange-600 hover:bg-orange-50 border-orange-100" :title="t('nav.summary')">
-                    <Sparkles class="w-4 h-4" />
-                    <span>{{ t('nav.summary') }}</span>
-                </button>
-
-                <!-- 导出选项 -->
-                <button @click="exportMarkdown(); isToolsExpanded = false" class="toolbar-btn text-indigo-600 hover:bg-indigo-50 border-indigo-100" :title="t('nav.export')">
-                    <Download class="w-4 h-4" />
-                    <span>{{ t('nav.export') }}</span>
-                </button>
-
-                <!-- 设置按钮 -->
-                <button @click="showSettings = true; isToolsExpanded = false" class="toolbar-btn text-slate-600 hover:bg-slate-50 border-slate-100">
-                    <Settings class="w-4 h-4" />
-                    <span>{{ t('common.settings') }}</span>
-                </button>
-            </div>
-        </Transition>
-
-        <!-- 主内容区：VueFlow 画布 -->
         <div class="flex-grow relative">
             <VueFlow
                 :default-edge-options="{ type: 'smoothstep' }"
@@ -912,483 +109,43 @@ const startNewSession = () => {
                 :pan-on-drag="panOnDrag"
                 :selection-key-code="'Shift'"
             >
-                <Background 
-                    :variant="config.backgroundVariant" 
-                    :pattern-color="config.backgroundVariant === BackgroundVariant.Dots ? '#cbd5e1' : '#f1f5f9'" 
-                    :gap="24" 
-                    :size="config.backgroundVariant === BackgroundVariant.Dots ? 1 : 0.5" 
+                <Background
+                    :variant="config.backgroundVariant"
+                    :pattern-color="config.backgroundVariant === BackgroundVariant.Dots ? '#cbd5e1' : '#f1f5f9'"
+                    :gap="24"
+                    :size="config.backgroundVariant === BackgroundVariant.Dots ? 1 : 0.5"
                 />
                 <Controls v-if="config.showControls" />
                 <MiniMap v-if="config.showMiniMap" pannable zoomable />
 
-                <!-- 自定义节点插槽 -->
                 <template #node-window="{ id, data, selected }">
-                    <div
-                        class="window-node group transition-all duration-500"
-                        :class="{
-                            'opacity-40 grayscale-[0.4] blur-[0.5px] scale-[0.98] pointer-events-none': activeNodeId && !activePath.nodeIds.has(id),
-                            'opacity-100 grayscale-0 blur-0 scale-105 z-50 ring-2 ring-offset-4': activePath.nodeIds.has(id),
-                            '!w-[450px]': data.isDetailExpanded
-                        }"
-                        :style="{
-                            borderColor: activePath.nodeIds.has(id) ? config.edgeColor : config.edgeColor + '40',
-                            boxShadow: activeNodeId === id ? `0 20px 50px -12px ${config.edgeColor}40` : '',
-                            '--tw-ring-color': selected ? config.edgeColor + '40' : 'transparent'
-                        }"
-                        @mouseenter="hoveredNodeId = id"
-                        @mouseleave="hoveredNodeId = null"
-                    >
-                        <!-- 增加连接锚点 -->
-                        <Handle type="target" :position="Position.Left" class="!bg-transparent !border-none" />
-                        <Handle type="source" :position="Position.Right" class="!bg-transparent !border-none" />
-
-                        <!-- Window Header -->
-                        <div class="window-header" :style="{ backgroundColor: activePath.nodeIds.has(id) ? config.edgeColor + '15' : config.edgeColor + '05' }">
-                            <div class="flex gap-1.5">
-                                <div class="w-2 h-2 rounded-full" :style="{ backgroundColor: activePath.nodeIds.has(id) ? config.edgeColor : config.edgeColor + '40' }"></div>
-                                <div class="w-2 h-2 rounded-full bg-slate-200"></div>
-                                <div class="w-2 h-2 rounded-full bg-slate-200"></div>
-                            </div>
-                            <span class="window-title" :style="{ color: activePath.nodeIds.has(id) ? config.edgeColor : '' }">
-                                {{ data.type === 'root' ? t('node.mainTitle') : t('node.moduleTitle') }}
-                            </span>
-                        </div>
-
-                        <!-- Loading Overlay for Node -->
-                        <div
-                            v-if="data.isExpanding"
-                            class="absolute inset-0 z-20 flex flex-col items-center justify-center bg-white/60 backdrop-blur-[2px] rounded-2xl transition-all duration-300"
-                        >
-                            <div class="relative">
-                                <RefreshCw class="w-8 h-8 text-slate-900 animate-spin mb-3" :style="{ color: config.edgeColor }" />
-                                <div class="absolute inset-0 blur-xl opacity-20 animate-pulse" :style="{ backgroundColor: config.edgeColor }"></div>
-                            </div>
-                            <span class="text-[10px] font-black tracking-widest uppercase text-slate-500">{{ t('common.expanding') }}</span>
-                        </div>
-
-                        <!-- Window Content -->
-                        <div class="window-content">
-                            <!-- Image Display -->
-                            <div
-                                v-if="data.imageUrl || data.isImageLoading"
-                                class="mb-4 rounded-lg overflow-hidden bg-slate-50 border border-slate-100 aspect-video flex items-center justify-center relative group/img cursor-pointer"
-                                @click.stop="data.imageUrl ? (previewImageUrl = data.imageUrl) : null"
-                            >
-                                <img v-if="data.imageUrl" :src="data.imageUrl" class="w-full h-full object-cover" />
-                                <div v-if="data.isImageLoading" class="absolute inset-0 flex flex-col items-center justify-center bg-white/80 backdrop-blur-sm cursor-default">
-                                    <RefreshCw class="w-6 h-6 text-orange-500 animate-spin mb-2" />
-                                    <span class="text-[8px] font-bold text-slate-400 uppercase">{{ t('common.generating') }}</span>
-                                </div>
-                                <div
-                                    v-if="data.imageUrl"
-                                    class="absolute inset-0 bg-black/40 opacity-0 group-hover/img:opacity-100 transition-opacity flex items-center justify-center gap-2"
-                                >
-                                    <button class="p-2 bg-white/20 hover:bg-white/40 rounded-full backdrop-blur-md transition-all" :title="t('node.view')">
-                                        <Maximize2 class="w-4 h-4 text-white" />
-                                    </button>
-                                    <button
-                                        @click.stop="generateNodeImage(id, data.label)"
-                                        class="p-2 bg-white/20 hover:bg-white/40 rounded-full backdrop-blur-md transition-all"
-                                        :title="t('node.regenerate')"
-                                    >
-                                        <RefreshCw class="w-4 h-4 text-white" />
-                                    </button>
-                                </div>
-                            </div>
-
-                            <div class="flex items-start gap-2 mb-2">
-                                <span class="font-bold shrink-0 mt-0.5" :style="{ color: config.edgeColor }">></span>
-                                <h3
-                                    class="font-black text-slate-900 tracking-tight cursor-pointer hover:text-orange-600 transition-colors"
-                                    :class="data.isTitleExpanded ? 'whitespace-normal' : 'truncate'"
-                                    @click.stop="updateNode(id, { data: { ...data, isTitleExpanded: !data.isTitleExpanded } })"
-                                >
-                                    {{ data.label }}
-                                </h3>
-                            </div>
-                            <p class="text-[10px] text-slate-500 leading-relaxed font-medium line-clamp-3">
-                                {{ data.description }}
-                            </p>
-
-                            <!-- 错误反馈显示 -->
-                            <div v-if="data.error" class="mt-3 p-2.5 bg-red-50 border border-red-100 rounded-lg animate-in fade-in slide-in-from-top-1 duration-300">
-                                <div class="flex items-start gap-2">
-                                    <Shield class="w-3.5 h-3.5 text-red-500 shrink-0 mt-0.5" />
-                                    <div class="flex-grow space-y-1">
-                                        <p class="text-[10px] font-black text-red-600 leading-tight">{{ t('common.error.title') }}</p>
-                                        <p class="text-[9px] text-red-500 leading-relaxed">{{ data.error }}</p>
-                                    </div>
-                                    <button 
-                                        @click.stop="data.imageUrl === null && data.isImageLoading === false ? generateNodeImage(id, data.label) : expandIdea({ id, data, position: flowNodes.find(n => n.id === id)?.position })"
-                                        class="p-1 hover:bg-red-100 rounded transition-colors"
-                                        :title="t('common.error.retry')"
-                                    >
-                                        <RefreshCw class="w-3 h-3 text-red-600" />
-                                    </button>
-                                </div>
-                            </div>
-
-                            <!-- Node Actions -->
-                            <div class="pt-3 mt-3 border-t border-slate-50">
-                                <div class="flex items-center justify-between mb-3">
-                                    <div class="flex items-center gap-1.5 shrink-0">
-                                        <div class="w-1.5 h-1.5 rounded-full animate-pulse" :style="{ backgroundColor: data.isExpanding ? config.edgeColor : '#34d399' }"></div>
-                                        <span class="text-[9px] font-bold text-slate-400 uppercase tracking-tighter">{{
-                                            data.isExpanding ? t('common.expanding') : t('common.active')
-                                        }}</span>
-                                    </div>
-
-                                    <div class="flex items-center gap-2">
-                                        <button
-                                            @click.stop="deepDive(id, data.label)"
-                                            class="action-btn text-orange-500 hover:bg-orange-50"
-                                            :title="t('node.deepDive')"
-                                        >
-                                            <BookOpen class="w-2.5 h-2.5" />
-                                            <span>{{ t('node.deepDive') }}</span>
-                                        </button>
-                                        <button
-                                            v-if="!data.imageUrl && !data.isImageLoading"
-                                            @click.stop="generateNodeImage(id, data.label)"
-                                            class="action-btn text-blue-500 hover:bg-blue-50"
-                                        >
-                                            <ImageIcon class="w-2.5 h-2.5" />
-                                            <span>{{ t('node.imgAction') }}</span>
-                                        </button>
-                                    </div>
-                                </div>
-
-                                <!-- Detailed Content Display -->
-                                <div v-if="data.isDetailExpanded" class="mb-4 pt-4 border-t border-slate-100 animate-in fade-in slide-in-from-top-2 duration-300">
-                                    <div class="flex items-center justify-between mb-2">
-                                        <span class="text-[9px] font-black text-slate-400 uppercase tracking-widest">{{ t('node.deepDive') }}</span>
-                                        <button @click.stop="updateNode(id, { data: { ...data, isDetailExpanded: false } })" class="text-slate-300 hover:text-slate-500">
-                                            <X class="w-3 h-3" />
-                                        </button>
-                                    </div>
-                                    <div v-if="data.isDeepDiving" class="flex flex-col items-center py-6">
-                                        <div class="relative mb-3">
-                                            <RefreshCw class="w-6 h-6 text-orange-400 animate-spin" />
-                                            <div class="absolute inset-0 blur-lg bg-orange-200 opacity-50 animate-pulse"></div>
-                                        </div>
-                                        <span class="text-[9px] font-black text-slate-300 uppercase tracking-widest animate-pulse">{{ t('common.loading') }}</span>
-                                    </div>
-                                    <div v-else class="text-[11px] text-slate-600 leading-relaxed font-medium whitespace-pre-wrap max-h-[350px] overflow-y-auto custom-scrollbar pr-2 selection:bg-orange-100 nowheel">
-                                         {{ data.detailedContent }}
-                                     </div>
-                                </div>
-
-                                <!-- Follow-up Input -->
-                                <div class="relative group/input">
-                                    <div
-                                        class="flex items-center gap-2 bg-slate-50 rounded-lg px-2.5 py-2 border border-slate-100 focus-within:bg-white transition-all"
-                                        :style="{ borderColor: data.followUp || focusedNodeId === id ? config.edgeColor : '' }"
-                                    >
-                                        <ChevronRight v-if="!data.followUp" class="w-3 h-3 text-slate-400" />
-                                        <Terminal v-else class="w-3 h-3" :style="{ color: config.edgeColor }" />
-                                        <input
-                                            v-model="data.followUp"
-                                            @focus="focusedNodeId = id"
-                                            @blur="focusedNodeId = null"
-                                            @keyup.enter="expandIdea({ id, data, position: flowNodes.find(n => n.id === id)?.position }, data.followUp)"
-                                            :placeholder="t('node.followUp')"
-                                            class="bg-transparent border-none outline-none text-[10px] font-bold text-slate-700 flex-grow placeholder:text-slate-300"
-                                            :disabled="data.isExpanding"
-                                        />
-                                        <button
-                                            @click.stop="expandIdea({ id, data, position: flowNodes.find(n => n.id === id)?.position }, data.followUp)"
-                                            :disabled="!data.followUp?.trim() || data.isExpanding"
-                                            class="transition-all transform active:scale-90"
-                                            :style="{ color: data.followUp?.trim() ? config.edgeColor : '#cbd5e1' }"
-                                        >
-                                            <RefreshCw v-if="data.isExpanding" class="w-3.5 h-3.5 animate-spin" />
-                                            <ArrowRight v-else class="w-3.5 h-3.5" />
-                                        </button>
-                                    </div>
-                                </div>
-                            </div>
-                        </div>
-                    </div>
+                    <WindowNode
+                        :id="id"
+                        :data="data"
+                        :selected="selected"
+                        :t="t"
+                        :config="config"
+                        :activeNodeId="activeNodeId"
+                        :activePath="activePath"
+                        :flowNodes="flowNodes"
+                        :updateNode="updateNode"
+                        :deepDive="deepDive"
+                        :generateNodeImage="generateNodeImage"
+                        :expandIdea="expandIdea"
+                        @preview="previewImageUrl = $event"
+                    />
                 </template>
             </VueFlow>
 
-            <!-- 浮动 UI 层 -->
             <div class="absolute inset-0 pointer-events-none z-10 p-12"></div>
 
-            <!-- 设置弹窗 -->
-            <div v-if="showSettings" class="fixed inset-0 z-[100] flex items-center justify-center bg-slate-900/40 backdrop-blur-sm p-4" @click.self="showSettings = false">
-                <div class="bg-white rounded-3xl shadow-2xl w-full max-w-2xl overflow-hidden border border-slate-200 animate-in fade-in zoom-in duration-300">
-                    <div class="px-8 py-6 border-b border-slate-100 flex items-center justify-between bg-slate-50/50">
-                        <div class="flex items-center gap-3">
-                            <div class="p-2 bg-slate-900 rounded-xl text-white">
-                                <Settings class="w-5 h-5" />
-                            </div>
-                            <div>
-                                <h3 class="text-lg font-black text-slate-900 tracking-tight">{{ t('settings.title') }}</h3>
-                                <p class="text-xs text-slate-500 font-bold uppercase tracking-wider">{{ t('settings.subtitle') }}</p>
-                            </div>
-                        </div>
-                        <button @click="showSettings = false" class="p-2 hover:bg-slate-200 rounded-xl transition-colors">
-                            <X class="w-5 h-5 text-slate-500" />
-                        </button>
-                    </div>
-
-                    <div class="p-8 space-y-8 max-h-[70vh] overflow-y-auto custom-scrollbar">
-                        <!-- 模式切换 -->
-                        <div class="flex p-1.5 bg-slate-100 rounded-2xl w-fit">
-                            <button
-                                @click="apiConfig.mode = 'default'"
-                                class="px-6 py-2 rounded-xl text-xs font-black tracking-widest transition-all"
-                                :class="apiConfig.mode === 'default' ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'"
-                            >
-                                {{ t('common.default') }}
-                            </button>
-                            <button
-                                @click="apiConfig.mode = 'custom'"
-                                class="px-6 py-2 rounded-xl text-xs font-black tracking-widest transition-all"
-                                :class="apiConfig.mode === 'custom' ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'"
-                            >
-                                {{ t('common.custom') }}
-                            </button>
-                        </div>
-
-                        <div v-if="apiConfig.mode === 'custom'" class="space-y-4 animate-in slide-in-from-top-2 duration-300">
-                            <div class="flex items-center gap-2 text-slate-900">
-                                <Sparkles class="w-4 h-4 text-orange-500" />
-                                <span class="text-sm font-black uppercase tracking-widest">{{ t('settings.textGen') }}</span>
-                            </div>
-                            <div class="grid grid-cols-1 gap-4 p-5 bg-slate-50 rounded-2xl border border-slate-100">
-                                <div class="space-y-1.5">
-                                    <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                        <LinkIcon class="w-3 h-3" /> {{ t('settings.baseUrl') }}
-                                    </label>
-                                    <input
-                                        v-model="apiConfig.chat.baseUrl"
-                                        type="text"
-                                        :placeholder="t('settings.placeholderUrl')"
-                                        class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
-                                    />
-                                </div>
-                                <div class="grid grid-cols-2 gap-4">
-                                    <div class="space-y-1.5">
-                                        <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                            <Shield class="w-3 h-3" /> {{ t('settings.modelName') }}
-                                        </label>
-                                        <input
-                                            v-model="apiConfig.chat.model"
-                                            type="text"
-                                            :placeholder="t('settings.placeholderModel')"
-                                            class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
-                                        />
-                                    </div>
-                                    <div class="space-y-1.5">
-                                        <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                            <Key class="w-3 h-3" /> {{ t('settings.apiKey') }}
-                                        </label>
-                                        <input
-                                            v-model="apiConfig.chat.apiKey"
-                                            type="password"
-                                            :placeholder="t('settings.placeholderKey')"
-                                            class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
-                                        />
-                                    </div>
-                                </div>
-                            </div>
-                        </div>
-
-                        <div v-if="apiConfig.mode === 'custom'" class="space-y-4 animate-in slide-in-from-top-2 duration-300">
-                            <div class="flex items-center gap-2 text-slate-900">
-                                <ImageIcon class="w-4 h-4 text-blue-500" />
-                                <span class="text-sm font-black uppercase tracking-widest">{{ t('settings.imageGen') }}</span>
-                            </div>
-                            <div class="grid grid-cols-1 gap-4 p-5 bg-slate-50 rounded-2xl border border-slate-100">
-                                <div class="space-y-1.5">
-                                    <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                        <LinkIcon class="w-3 h-3" /> {{ t('settings.baseUrl') }}
-                                    </label>
-                                    <input
-                                        v-model="apiConfig.image.baseUrl"
-                                        type="text"
-                                        :placeholder="t('settings.placeholderUrl')"
-                                        class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
-                                    />
-                                </div>
-                                <div class="grid grid-cols-2 gap-4">
-                                    <div class="space-y-1.5">
-                                        <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                            <Shield class="w-3 h-3" /> {{ t('settings.modelName') }}
-                                        </label>
-                                        <input
-                                            v-model="apiConfig.image.model"
-                                            type="text"
-                                            :placeholder="t('settings.placeholderModel')"
-                                            class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
-                                        />
-                                    </div>
-                                    <div class="space-y-1.5">
-                                        <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
-                                            <Key class="w-3 h-3" /> {{ t('settings.apiKey') }}
-                                        </label>
-                                        <input
-                                            v-model="apiConfig.image.apiKey"
-                                            type="password"
-                                            :placeholder="t('settings.placeholderKey')"
-                                            class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
-                                        />
-                                    </div>
-                                </div>
-                            </div>
-                        </div>
-
-                        <!-- 默认模式提示 -->
-                        <div v-if="apiConfig.mode === 'default'" class="flex flex-col items-center justify-center py-12 text-center space-y-4 animate-in fade-in duration-500">
-                            <div class="w-16 h-16 bg-slate-100 rounded-full flex items-center justify-center">
-                                <Activity class="w-8 h-8 text-slate-400" />
-                            </div>
-                            <div class="space-y-1">
-                                <h4 class="text-sm font-black text-slate-900 uppercase">{{ t('settings.defaultModeTitle') }}</h4>
-                                <p class="text-xs text-slate-500 max-w-[280px]">{{ t('settings.defaultModeDesc') }}</p>
-                            </div>
-                        </div>
-                    </div>
-
-                    <div class="px-8 py-6 border-t border-slate-100 bg-slate-50/50 flex justify-end gap-3">
-                        <button
-                            @click="showSettings = false"
-                            class="px-8 py-2.5 bg-slate-900 text-white rounded-xl text-xs font-black tracking-widest hover:bg-slate-800 transition-all shadow-lg shadow-slate-200 active:scale-95"
-                        >
-                            {{ t('common.save') }}
-                        </button>
-                    </div>
-                </div>
-            </div>
-
-            <!-- 全局图片预览弹窗 -->
-            <Transition name="fade">
-                <div v-if="previewImageUrl" class="fixed inset-0 z-[100] flex items-center justify-center bg-black/80 backdrop-blur-sm p-10" @click="previewImageUrl = null">
-                    <div class="relative max-w-full max-h-full rounded-lg overflow-hidden shadow-2xl animate-in fade-in zoom-in duration-300" @click.stop>
-                        <button @click="previewImageUrl = null" class="absolute top-4 right-4 p-2 bg-black/50 hover:bg-black/70 text-white rounded-full transition-colors z-10">
-                            <X class="w-5 h-5" />
-                        </button>
-                        <img :src="previewImageUrl" class="max-w-screen max-h-screen object-contain" />
-                    </div>
-                </div>
-            </Transition>
-
-            <!-- 自定义重置确认弹窗 -->
-            <Transition name="fade">
-                <div v-if="showResetConfirm" class="fixed inset-0 z-[100] flex items-center justify-center p-4">
-                    <div class="absolute inset-0 bg-slate-900/40 backdrop-blur-sm" @click="showResetConfirm = false"></div>
-                    <div class="relative bg-white rounded-2xl shadow-2xl border border-slate-100 p-6 w-full max-w-sm overflow-hidden group animate-in zoom-in duration-300">
-                        <!-- 背景装饰 -->
-                        <div class="absolute -top-12 -right-12 w-24 h-24 bg-orange-50 rounded-full blur-2xl group-hover:bg-orange-100 transition-colors"></div>
-                        
-                        <div class="relative flex flex-col items-center text-center space-y-4">
-                            <div class="w-16 h-16 bg-orange-50 rounded-2xl flex items-center justify-center text-orange-500 mb-2 ring-4 ring-orange-50/50">
-                                <RefreshCw class="w-8 h-8 animate-spin-slow" />
-                            </div>
-                            
-                            <div class="space-y-2">
-                                <h3 class="text-lg font-bold text-slate-800 tracking-tight">{{ t('nav.reset') }}</h3>
-                                <p class="text-sm text-slate-500 leading-relaxed px-4">
-                                    {{ t('common.confirmReset') }}
-                                </p>
-                            </div>
-
-                            <div class="flex items-center gap-3 w-full pt-2">
-                                <button 
-                                    @click="showResetConfirm = false"
-                                    class="flex-1 px-4 py-2.5 rounded-xl border border-slate-200 text-slate-600 font-medium hover:bg-slate-50 transition-colors active:scale-95"
-                                >
-                                    {{ t('common.cancel') || 'Cancel' }}
-                                </button>
-                                <button 
-                                    @click="executeReset"
-                                    class="flex-1 px-4 py-2.5 rounded-xl bg-orange-500 text-white font-medium hover:bg-orange-600 shadow-lg shadow-orange-500/30 transition-all active:scale-95"
-                                >
-                                    {{ t('common.confirm') || 'Confirm' }}
-                                </button>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-            </Transition>
-
-            <!-- 全篇总结弹窗 -->
-            <Transition name="fade">
-                <div v-if="showSummaryModal" class="fixed inset-0 z-[100] flex items-center justify-center p-4">
-                    <div class="absolute inset-0 bg-slate-900/40 backdrop-blur-sm" @click="showSummaryModal = false"></div>
-                    <div class="relative bg-white rounded-3xl shadow-2xl border border-slate-100 w-full max-w-2xl overflow-hidden animate-in zoom-in duration-300">
-                        <div class="absolute top-0 left-0 right-0 h-2 bg-gradient-to-r from-orange-400 to-rose-400"></div>
-                        
-                        <div class="p-6 md:p-8">
-                            <div class="flex items-center justify-between mb-6">
-                                <div class="flex items-center gap-3">
-                                    <div class="w-10 h-10 bg-orange-50 rounded-xl flex items-center justify-center text-orange-500">
-                                        <Sparkles class="w-5 h-5" />
-                                    </div>
-                                    <div>
-                                        <h3 class="text-xl font-black text-slate-800 tracking-tight">{{ t('common.summaryTitle') }}</h3>
-                                        <p class="text-xs text-slate-400 font-medium uppercase tracking-wider">{{ t('common.aiGenerated') }}</p>
-                                    </div>
-                                </div>
-                                <button @click="showSummaryModal = false" class="p-2 hover:bg-slate-50 rounded-full text-slate-400 transition-colors">
-                                    <X class="w-5 h-5" />
-                                </button>
-                            </div>
-
-                            <div class="relative min-h-[200px] max-h-[60vh] overflow-y-auto pr-2 custom-scrollbar">
-                                <div v-if="isSummarizing" class="absolute inset-0 flex flex-col items-center justify-center space-y-4">
-                                    <RefreshCw class="w-8 h-8 text-orange-500 animate-spin" />
-                                    <p class="text-sm font-bold text-slate-400 animate-pulse">{{ t('common.summarizing') }}</p>
-                                </div>
-                                <div v-else class="prose prose-slate max-w-none">
-                                    <div class="whitespace-pre-wrap text-slate-600 leading-relaxed text-sm md:text-base font-medium">
-                                        {{ summaryContent }}
-                                    </div>
-                                </div>
-                            </div>
-
-                            <div class="mt-8 flex justify-end">
-                                <button 
-                                    @click="showSummaryModal = false"
-                                    class="px-8 py-3 bg-slate-900 text-white rounded-2xl text-xs font-black tracking-widest hover:bg-slate-800 transition-all shadow-xl shadow-slate-200 active:scale-95"
-                                >
-                                    {{ t('common.close') }}
-                                </button>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-            </Transition>
+            <SettingsModal :show="showSettings" :t="t" :apiConfig="apiConfig" @close="showSettings = false" />
+            <ImagePreviewModal :url="previewImageUrl" @close="previewImageUrl = null" />
+            <ResetConfirmModal :show="showResetConfirm" :t="t" @close="showResetConfirm = false" @confirm="executeReset" />
+            <SummaryModal :show="showSummaryModal" :t="t" :isSummarizing="isSummarizing" :summaryContent="summaryContent" @close="showSummaryModal = false" />
         </div>
 
-        <!-- 底部全局操作栏 -->
-        <div class="fixed bottom-6 md:bottom-12 left-1/2 -translate-x-1/2 z-50 flex flex-col items-center gap-4 w-full max-w-2xl px-4 md:px-6">
-            <div class="flex items-center gap-2 md:gap-3 w-full">
-                <!-- 核心输入框容器 -->
-                <div
-                    class="flex-grow flex items-center gap-2 md:gap-4 bg-slate-50 border border-slate-200 rounded-xl md:rounded-2xl px-3 md:px-5 py-2 md:py-3 focus-within:bg-white focus-within:shadow-xl focus-within:shadow-slate-100 transition-all"
-                >
-                    <Terminal class="w-4 h-4 md:w-5 h-5 text-slate-400 flex-shrink-0" />
-                    <input
-                        v-model="ideaInput"
-                        :placeholder="t('nav.placeholder')"
-                        class="flex-grow bg-transparent border-none outline-none text-xs md:text-sm font-bold text-slate-700 placeholder:text-slate-300 min-w-0"
-                        @keyup.enter="expandIdea"
-                    />
-                    <button
-                        @click="expandIdea"
-                        :disabled="isLoading || !ideaInput.trim()"
-                        class="flex items-center gap-1.5 md:gap-2 px-3 md:px-4 py-2 md:py-2.5 bg-slate-900 hover:bg-slate-800 text-white rounded-lg md:rounded-xl transition-all active:scale-95 disabled:opacity-20 disabled:grayscale disabled:cursor-not-allowed group/btn flex-shrink-0"
-                    >
-                        <span class="text-[9px] md:text-[10px] font-black tracking-widest uppercase">{{ t('nav.execute') }}</span>
-                        <Zap v-if="!isLoading" class="w-3.5 h-3.5 md:w-4 h-4 text-orange-400 group-hover/btn:scale-110 transition-transform" />
-                        <RefreshCw v-else class="w-3.5 h-3.5 md:w-4 h-4 animate-spin" />
-                    </button>
-                </div>
-            </div>
-        </div>
+        <BottomBar :t="t" :isLoading="isLoading" v-model="ideaInput" @expand="expandIdea" />
     </div>
 </template>
 
diff --git a/src/components/BottomBar.vue b/src/components/BottomBar.vue
new file mode 100644
index 0000000..f541b71
--- /dev/null
+++ b/src/components/BottomBar.vue
@@ -0,0 +1,58 @@
+<script setup lang="ts">
+/**
+ * 底部输入条
+ * - 接收 v-model（modelValue）作为输入内容
+ * - 触发 expand 事件，由 App/useThinkFlow 执行“生成/扩展”
+ */
+
+// 图标：输入提示与执行态
+import { RefreshCw, Terminal, Zap } from 'lucide-vue-next'
+
+/**
+ * props：
+ * - t：i18n 翻译函数
+ * - modelValue：输入框内容（由 v-model 驱动）
+ * - isLoading：是否正在生成（用于禁用按钮并显示 loading 图标）
+ */
+const props = defineProps<{
+    t: any
+    modelValue: string
+    isLoading: boolean
+}>()
+
+/**
+ * 事件：
+ * - update:modelValue：更新输入框内容
+ * - expand：触发一次生成/扩展
+ */
+const emit = defineEmits<{
+    (e: 'update:modelValue', value: string): void
+    (e: 'expand'): void
+}>()
+</script>
+
+<template>
+    <div class="fixed bottom-6 md:bottom-12 left-1/2 -translate-x-1/2 z-50 flex flex-col items-center gap-4 w-full max-w-2xl px-4 md:px-6">
+        <div class="flex items-center gap-2 md:gap-3 w-full">
+            <div class="flex-grow flex items-center gap-2 md:gap-4 bg-slate-50 border border-slate-200 rounded-xl md:rounded-2xl px-3 md:px-5 py-2 md:py-3 focus-within:bg-white focus-within:shadow-xl focus-within:shadow-slate-100 transition-all">
+                <Terminal class="w-4 h-4 md:w-5 h-5 text-slate-400 flex-shrink-0" />
+                <input
+                    :value="props.modelValue"
+                    :placeholder="props.t('nav.placeholder')"
+                    class="flex-grow bg-transparent border-none outline-none text-xs md:text-sm font-bold text-slate-700 placeholder:text-slate-300 min-w-0"
+                    @input="emit('update:modelValue', ($event.target as HTMLInputElement).value)"
+                    @keyup.enter="emit('expand')"
+                />
+                <button
+                    @click="emit('expand')"
+                    :disabled="props.isLoading || !props.modelValue.trim()"
+                    class="flex items-center gap-1.5 md:gap-2 px-3 md:px-4 py-2 md:py-2.5 bg-slate-900 hover:bg-slate-800 text-white rounded-lg md:rounded-xl transition-all active:scale-95 disabled:opacity-20 disabled:grayscale disabled:cursor-not-allowed group/btn flex-shrink-0"
+                >
+                    <span class="text-[9px] md:text-[10px] font-black tracking-widest uppercase">{{ props.t('nav.execute') }}</span>
+                    <Zap v-if="!props.isLoading" class="w-3.5 h-3.5 md:w-4 h-4 text-orange-400 group-hover/btn:scale-110 transition-transform" />
+                    <RefreshCw v-else class="w-3.5 h-3.5 md:w-4 h-4 animate-spin" />
+                </button>
+            </div>
+        </div>
+    </div>
+</template>
diff --git a/src/components/ImagePreviewModal.vue b/src/components/ImagePreviewModal.vue
new file mode 100644
index 0000000..d28a396
--- /dev/null
+++ b/src/components/ImagePreviewModal.vue
@@ -0,0 +1,38 @@
+<script setup lang="ts">
+/**
+ * 图片预览弹窗
+ * - 接收 url，存在则显示
+ * - 点击遮罩或关闭按钮触发 close
+ */
+
+// 图标：关闭按钮
+import { X } from 'lucide-vue-next'
+
+/**
+ * props：
+ * - url：需要预览的图片地址（null 表示关闭）
+ */
+const props = defineProps<{
+    url: string | null
+}>()
+
+/**
+ * close：关闭预览
+ */
+const emit = defineEmits<{
+    (e: 'close'): void
+}>()
+</script>
+
+<template>
+    <Transition name="fade">
+        <div v-if="props.url" class="fixed inset-0 z-[100] flex items-center justify-center bg-black/80 backdrop-blur-sm p-10" @click="emit('close')">
+            <div class="relative max-w-full max-h-full rounded-lg overflow-hidden shadow-2xl animate-in fade-in zoom-in duration-300" @click.stop>
+                <button @click="emit('close')" class="absolute top-4 right-4 p-2 bg-black/50 hover:bg-black/70 text-white rounded-full transition-colors z-10">
+                    <X class="w-5 h-5" />
+                </button>
+                <img :src="props.url" class="max-w-screen max-h-screen object-contain" />
+            </div>
+        </div>
+    </Transition>
+</template>
diff --git a/src/components/ResetConfirmModal.vue b/src/components/ResetConfirmModal.vue
new file mode 100644
index 0000000..71c4295
--- /dev/null
+++ b/src/components/ResetConfirmModal.vue
@@ -0,0 +1,68 @@
+<script setup lang="ts">
+/**
+ * 重置确认弹窗
+ * - 用于“新会话/清空画布”前的二次确认
+ */
+
+// 图标：旋转提示
+import { RefreshCw } from 'lucide-vue-next'
+
+/**
+ * props：
+ * - show：弹窗显示开关
+ * - t：i18n 翻译函数
+ */
+const props = defineProps<{
+    show: boolean
+    t: any
+}>()
+
+/**
+ * 事件：
+ * - close：取消/关闭
+ * - confirm：确认重置（由 App/useThinkFlow 执行真正清空）
+ */
+const emit = defineEmits<{
+    (e: 'close'): void
+    (e: 'confirm'): void
+}>()
+</script>
+
+<template>
+    <Transition name="fade">
+        <div v-if="props.show" class="fixed inset-0 z-[100] flex items-center justify-center p-4">
+            <div class="absolute inset-0 bg-slate-900/40 backdrop-blur-sm" @click="emit('close')"></div>
+            <div class="relative bg-white rounded-2xl shadow-2xl border border-slate-100 p-6 w-full max-w-sm overflow-hidden group animate-in zoom-in duration-300">
+                <div class="absolute -top-12 -right-12 w-24 h-24 bg-orange-50 rounded-full blur-2xl group-hover:bg-orange-100 transition-colors"></div>
+
+                <div class="relative flex flex-col items-center text-center space-y-4">
+                    <div class="w-16 h-16 bg-orange-50 rounded-2xl flex items-center justify-center text-orange-500 mb-2 ring-4 ring-orange-50/50">
+                        <RefreshCw class="w-8 h-8 animate-spin-slow" />
+                    </div>
+
+                    <div class="space-y-2">
+                        <h3 class="text-lg font-bold text-slate-800 tracking-tight">{{ props.t('nav.reset') }}</h3>
+                        <p class="text-sm text-slate-500 leading-relaxed px-4">
+                            {{ props.t('common.confirmReset') }}
+                        </p>
+                    </div>
+
+                    <div class="flex items-center gap-3 w-full pt-2">
+                        <button
+                            @click="emit('close')"
+                            class="flex-1 px-4 py-2.5 rounded-xl border border-slate-200 text-slate-600 font-medium hover:bg-slate-50 transition-colors active:scale-95"
+                        >
+                            {{ props.t('common.cancel') || 'Cancel' }}
+                        </button>
+                        <button
+                            @click="emit('confirm')"
+                            class="flex-1 px-4 py-2.5 rounded-xl bg-orange-500 text-white font-medium hover:bg-orange-600 shadow-lg shadow-orange-500/30 transition-all active:scale-95"
+                        >
+                            {{ props.t('common.confirm') || 'Confirm' }}
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </Transition>
+</template>
diff --git a/src/components/SettingsModal.vue b/src/components/SettingsModal.vue
new file mode 100644
index 0000000..d4147c8
--- /dev/null
+++ b/src/components/SettingsModal.vue
@@ -0,0 +1,177 @@
+<script setup lang="ts">
+/**
+ * 设置弹窗（API 配置）
+ * - 默认模式：使用内置 DEFAULT_CONFIG + 环境变量 API Key（无需输入）
+ * - 自定义模式：允许分别配置“文本生成/图片生成”的 baseUrl、model、apiKey
+ * - 写入逻辑不在组件内：apiConfig 是响应式对象，持久化由 useThinkFlow 的 watch 完成
+ */
+
+// 图标：分区与输入项标识
+import { Activity, Image as ImageIcon, Key, Link as LinkIcon, Settings, Shield, Sparkles, X } from 'lucide-vue-next'
+
+/**
+ * props：
+ * - show：弹窗显示开关
+ * - t：i18n 翻译函数
+ * - apiConfig：由 useThinkFlow 提供的响应式配置对象
+ */
+const props = defineProps<{
+    show: boolean
+    t: any
+    apiConfig: any
+}>()
+
+/**
+ * close：关闭弹窗（保存按钮也仅触发关闭，真实保存由响应式 + watch 完成）
+ */
+const emit = defineEmits<{
+    (e: 'close'): void
+}>()
+</script>
+
+<template>
+    <div v-if="props.show" class="fixed inset-0 z-[100] flex items-center justify-center bg-slate-900/40 backdrop-blur-sm p-4" @click.self="emit('close')">
+        <div class="bg-white rounded-3xl shadow-2xl w-full max-w-2xl overflow-hidden border border-slate-200 animate-in fade-in zoom-in duration-300">
+            <div class="px-8 py-6 border-b border-slate-100 flex items-center justify-between bg-slate-50/50">
+                <div class="flex items-center gap-3">
+                    <div class="p-2 bg-slate-900 rounded-xl text-white">
+                        <Settings class="w-5 h-5" />
+                    </div>
+                    <div>
+                        <h3 class="text-lg font-black text-slate-900 tracking-tight">{{ props.t('settings.title') }}</h3>
+                        <p class="text-xs text-slate-500 font-bold uppercase tracking-wider">{{ props.t('settings.subtitle') }}</p>
+                    </div>
+                </div>
+                <button @click="emit('close')" class="p-2 hover:bg-slate-200 rounded-xl transition-colors">
+                    <X class="w-5 h-5 text-slate-500" />
+                </button>
+            </div>
+
+            <div class="p-8 space-y-8 max-h-[70vh] overflow-y-auto custom-scrollbar">
+                <div class="flex p-1.5 bg-slate-100 rounded-2xl w-fit">
+                    <button
+                        @click="props.apiConfig.mode = 'default'"
+                        class="px-6 py-2 rounded-xl text-xs font-black tracking-widest transition-all"
+                        :class="props.apiConfig.mode === 'default' ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'"
+                    >
+                        {{ props.t('common.default') }}
+                    </button>
+                    <button
+                        @click="props.apiConfig.mode = 'custom'"
+                        class="px-6 py-2 rounded-xl text-xs font-black tracking-widest transition-all"
+                        :class="props.apiConfig.mode === 'custom' ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'"
+                    >
+                        {{ props.t('common.custom') }}
+                    </button>
+                </div>
+
+                <div v-if="props.apiConfig.mode === 'custom'" class="space-y-4 animate-in slide-in-from-top-2 duration-300">
+                    <div class="flex items-center gap-2 text-slate-900">
+                        <Sparkles class="w-4 h-4 text-orange-500" />
+                        <span class="text-sm font-black uppercase tracking-widest">{{ props.t('settings.textGen') }}</span>
+                    </div>
+                    <div class="grid grid-cols-1 gap-4 p-5 bg-slate-50 rounded-2xl border border-slate-100">
+                        <div class="space-y-1.5">
+                            <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                <LinkIcon class="w-3 h-3" /> {{ props.t('settings.baseUrl') }}
+                            </label>
+                            <input
+                                v-model="props.apiConfig.chat.baseUrl"
+                                type="text"
+                                :placeholder="props.t('settings.placeholderUrl')"
+                                class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
+                            />
+                        </div>
+                        <div class="grid grid-cols-2 gap-4">
+                            <div class="space-y-1.5">
+                                <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                    <Shield class="w-3 h-3" /> {{ props.t('settings.modelName') }}
+                                </label>
+                                <input
+                                    v-model="props.apiConfig.chat.model"
+                                    type="text"
+                                    :placeholder="props.t('settings.placeholderModel')"
+                                    class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
+                                />
+                            </div>
+                            <div class="space-y-1.5">
+                                <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                    <Key class="w-3 h-3" /> {{ props.t('settings.apiKey') }}
+                                </label>
+                                <input
+                                    v-model="props.apiConfig.chat.apiKey"
+                                    type="password"
+                                    :placeholder="props.t('settings.placeholderKey')"
+                                    class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-orange-500/20 focus:border-orange-500 outline-none transition-all font-mono"
+                                />
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                <div v-if="props.apiConfig.mode === 'custom'" class="space-y-4 animate-in slide-in-from-top-2 duration-300">
+                    <div class="flex items-center gap-2 text-slate-900">
+                        <ImageIcon class="w-4 h-4 text-blue-500" />
+                        <span class="text-sm font-black uppercase tracking-widest">{{ props.t('settings.imageGen') }}</span>
+                    </div>
+                    <div class="grid grid-cols-1 gap-4 p-5 bg-slate-50 rounded-2xl border border-slate-100">
+                        <div class="space-y-1.5">
+                            <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                <LinkIcon class="w-3 h-3" /> {{ props.t('settings.baseUrl') }}
+                            </label>
+                            <input
+                                v-model="props.apiConfig.image.baseUrl"
+                                type="text"
+                                :placeholder="props.t('settings.placeholderUrl')"
+                                class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
+                            />
+                        </div>
+                        <div class="grid grid-cols-2 gap-4">
+                            <div class="space-y-1.5">
+                                <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                    <Shield class="w-3 h-3" /> {{ props.t('settings.modelName') }}
+                                </label>
+                                <input
+                                    v-model="props.apiConfig.image.model"
+                                    type="text"
+                                    :placeholder="props.t('settings.placeholderModel')"
+                                    class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
+                                />
+                            </div>
+                            <div class="space-y-1.5">
+                                <label class="text-[10px] font-black text-slate-400 uppercase tracking-widest flex items-center gap-1">
+                                    <Key class="w-3 h-3" /> {{ props.t('settings.apiKey') }}
+                                </label>
+                                <input
+                                    v-model="props.apiConfig.image.apiKey"
+                                    type="password"
+                                    :placeholder="props.t('settings.placeholderKey')"
+                                    class="w-full px-4 py-2.5 bg-white border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 outline-none transition-all font-mono"
+                                />
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                <div v-if="props.apiConfig.mode === 'default'" class="flex flex-col items-center justify-center py-12 text-center space-y-4 animate-in fade-in duration-500">
+                    <div class="w-16 h-16 bg-slate-100 rounded-full flex items-center justify-center">
+                        <Activity class="w-8 h-8 text-slate-400" />
+                    </div>
+                    <div class="space-y-1">
+                        <h4 class="text-sm font-black text-slate-900 uppercase">{{ props.t('settings.defaultModeTitle') }}</h4>
+                        <p class="text-xs text-slate-500 max-w-[280px]">{{ props.t('settings.defaultModeDesc') }}</p>
+                    </div>
+                </div>
+            </div>
+
+            <div class="px-8 py-6 border-t border-slate-100 bg-slate-50/50 flex justify-end gap-3">
+                <button
+                    @click="emit('close')"
+                    class="px-8 py-2.5 bg-slate-900 text-white rounded-xl text-xs font-black tracking-widest hover:bg-slate-800 transition-all shadow-lg shadow-slate-200 active:scale-95"
+                >
+                    {{ props.t('common.save') }}
+                </button>
+            </div>
+        </div>
+    </div>
+</template>
diff --git a/src/components/SummaryModal.vue b/src/components/SummaryModal.vue
new file mode 100644
index 0000000..6fe3d74
--- /dev/null
+++ b/src/components/SummaryModal.vue
@@ -0,0 +1,82 @@
+<script setup lang="ts">
+/**
+ * 总结弹窗
+ * - show 控制显示
+ * - isSummarizing 为 true 时展示 loading
+ * - summaryContent 展示 AI 总结结果
+ */
+
+// 图标：标题/关闭/加载
+import { RefreshCw, Sparkles, X } from 'lucide-vue-next'
+
+/**
+ * props：
+ * - show：弹窗显示开关
+ * - t：i18n 翻译函数
+ * - isSummarizing：是否正在生成总结
+ * - summaryContent：总结文本内容
+ */
+const props = defineProps<{
+    show: boolean
+    t: any
+    isSummarizing: boolean
+    summaryContent: string
+}>()
+
+/**
+ * close：关闭弹窗
+ */
+const emit = defineEmits<{
+    (e: 'close'): void
+}>()
+</script>
+
+<template>
+    <Transition name="fade">
+        <div v-if="props.show" class="fixed inset-0 z-[100] flex items-center justify-center p-4">
+            <div class="absolute inset-0 bg-slate-900/40 backdrop-blur-sm" @click="emit('close')"></div>
+            <div class="relative bg-white rounded-3xl shadow-2xl border border-slate-100 w-full max-w-2xl overflow-hidden animate-in zoom-in duration-300">
+                <div class="absolute top-0 left-0 right-0 h-2 bg-gradient-to-r from-orange-400 to-rose-400"></div>
+
+                <div class="p-6 md:p-8">
+                    <div class="flex items-center justify-between mb-6">
+                        <div class="flex items-center gap-3">
+                            <div class="w-10 h-10 bg-orange-50 rounded-xl flex items-center justify-center text-orange-500">
+                                <Sparkles class="w-5 h-5" />
+                            </div>
+                            <div>
+                                <h3 class="text-xl font-black text-slate-800 tracking-tight">{{ props.t('common.summaryTitle') }}</h3>
+                                <p class="text-xs text-slate-400 font-medium uppercase tracking-wider">{{ props.t('common.aiGenerated') }}</p>
+                            </div>
+                        </div>
+                        <button @click="emit('close')" class="p-2 hover:bg-slate-50 rounded-full text-slate-400 transition-colors">
+                            <X class="w-5 h-5" />
+                        </button>
+                    </div>
+
+                    <div class="relative min-h-[200px] max-h-[60vh] overflow-y-auto pr-2 custom-scrollbar">
+                        <div v-if="props.isSummarizing" class="absolute inset-0 flex flex-col items-center justify-center space-y-4">
+                            <RefreshCw class="w-8 h-8 text-orange-500 animate-spin" />
+                            <p class="text-sm font-bold text-slate-400 animate-pulse">{{ props.t('common.summarizing') }}</p>
+                        </div>
+                        <div v-else class="prose prose-slate max-w-none">
+                            <div class="whitespace-pre-wrap text-slate-600 leading-relaxed text-sm md:text-base font-medium">
+                                {{ props.summaryContent }}
+                            </div>
+                        </div>
+                    </div>
+
+                    <div class="mt-8 flex justify-end">
+                        <button
+                            @click="emit('close')"
+                            class="px-8 py-3 bg-slate-900 text-white rounded-2xl text-xs font-black tracking-widest hover:bg-slate-800 transition-all shadow-xl shadow-slate-200 active:scale-95"
+                        >
+                            {{ props.t('common.close') }}
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </Transition>
+</template>
+
diff --git a/src/components/TopNav.vue b/src/components/TopNav.vue
new file mode 100644
index 0000000..d321bbe
--- /dev/null
+++ b/src/components/TopNav.vue
@@ -0,0 +1,238 @@
+<script setup lang="ts">
+/**
+ * 顶部导航栏
+ * - 桌面端：展示完整工具条（视图控制/布局/配色/导出/设置等）
+ * - 移动端：收纳为下拉面板，通过 callAndClose 统一“执行 + 收起”
+ */
+
+// 基础依赖
+import { ref } from 'vue'
+
+// 背景样式枚举（用于切换 Lines/Dots）
+import { BackgroundVariant } from '@vue-flow/background'
+
+// 图标：所有按钮与状态展示
+import {
+    ChevronDown,
+    ChevronUp,
+    Download,
+    Focus,
+    Globe,
+    LayoutDashboard,
+    Map,
+    Menu,
+    Palette,
+    Settings,
+    Sparkles,
+    Target,
+    Trash2,
+    X
+} from 'lucide-vue-next'
+
+/**
+ * props：
+ * - t：i18n 翻译函数
+ * - locale：当前语言标识（用于显示 EN/ZH）
+ * - config：全局画布配置（边颜色/背景/小地图开关等）
+ * - onXxx：由 App 传入的动作回调
+ */
+const props = defineProps<{
+    t: any
+    locale: string
+    config: any
+    onFit: () => void
+    onResetLayout: () => void
+    onCenterRoot: () => void
+    onStartNewSession: () => void
+    onGenerateSummary: () => void
+    onExportMarkdown: () => void
+    onOpenSettings: () => void
+}>()
+
+const emit = defineEmits<{
+    (e: 'toggle-locale'): void
+}>()
+
+/**
+ * 移动端工具面板是否展开
+ */
+const isToolsExpanded = ref(false)
+
+/**
+ * 执行某个工具动作后自动收起移动端面板
+ */
+const callAndClose = (fn: () => void) => {
+    fn()
+    isToolsExpanded.value = false
+}
+</script>
+
+<template>
+    <nav class="flex-none bg-white/80 backdrop-blur-md border-b border-slate-200 px-3 md:px-6 py-2 md:py-3 flex items-center justify-between shadow-sm z-50">
+        <div class="flex items-center gap-2 md:gap-6 flex-grow mr-2">
+            <div class="flex items-center gap-2 flex-shrink-0">
+                <div class="w-3 h-3 bg-orange-500 rounded-sm rotate-45"></div>
+                <span class="font-black text-slate-900 tracking-tighter text-base md:text-lg">ThinkFlow</span>
+            </div>
+
+            <div class="h-6 w-[1px] bg-slate-200 mx-1 md:mx-2 flex-shrink-0"></div>
+
+            <div class="hidden md:flex items-center gap-2">
+                <button @click="props.onFit" class="toolbar-btn text-blue-500 hover:bg-blue-50 border-blue-100 flex-shrink-0" :title="props.t('nav.fit')">
+                    <Focus class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.fit') }}</span>
+                </button>
+
+                <button @click="props.onResetLayout" class="toolbar-btn text-purple-500 hover:bg-purple-50 border-purple-100 flex-shrink-0" :title="props.t('nav.layout')">
+                    <LayoutDashboard class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.layout') }}</span>
+                </button>
+
+                <button @click="props.onCenterRoot" class="toolbar-btn text-orange-500 hover:bg-orange-50 border-orange-100 flex-shrink-0" :title="props.t('nav.center')">
+                    <Target class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.center') }}</span>
+                </button>
+
+                <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
+
+                <button @click="props.onStartNewSession" class="toolbar-btn text-red-500 hover:bg-red-50 border-red-100 flex-shrink-0" :title="props.t('nav.reset')">
+                    <Trash2 class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.reset') }}</span>
+                </button>
+
+                <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
+
+                <div class="flex items-center gap-2 px-2 md:px-3 py-1.5 bg-slate-50 rounded-lg border border-slate-100 flex-shrink-0">
+                    <Palette class="w-3 h-3 md:w-3.5 h-3.5 text-slate-400" />
+                    <input type="color" v-model="props.config.edgeColor" class="w-3.5 h-3.5 md:w-4 h-4 rounded cursor-pointer bg-transparent border-none" />
+                    <span class="text-[9px] md:text-[10px] font-bold text-slate-500 uppercase">{{ props.t('nav.edge') }}</span>
+                </div>
+
+                <select v-model="props.config.backgroundVariant" class="toolbar-select flex-shrink-0">
+                    <option :value="BackgroundVariant.Lines">{{ props.t('nav.lines') }}</option>
+                    <option :value="BackgroundVariant.Dots">{{ props.t('nav.dots') }}</option>
+                </select>
+
+                <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
+
+                <button
+                    @click="props.config.showMiniMap = !props.config.showMiniMap"
+                    class="toolbar-btn border-slate-100 flex-shrink-0"
+                    :class="props.config.showMiniMap ? 'text-blue-500 bg-blue-50 border-blue-100' : 'text-slate-400 hover:text-slate-600'"
+                    :title="props.t('nav.map')"
+                >
+                    <Map class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.map') }}</span>
+                </button>
+
+                <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
+
+                <button @click="props.onGenerateSummary" class="toolbar-btn text-orange-600 hover:bg-orange-50 border-orange-100 flex-shrink-0" :title="props.t('nav.summary')">
+                    <Sparkles class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.summary') }}</span>
+                </button>
+
+                <button @click="props.onExportMarkdown" class="toolbar-btn text-indigo-600 hover:bg-indigo-50 border-indigo-100 flex-shrink-0" :title="props.t('nav.export')">
+                    <Download class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('nav.export') }}</span>
+                </button>
+
+                <div class="h-4 w-[1px] bg-slate-100 mx-1 flex-shrink-0"></div>
+
+                <button @click="props.onOpenSettings" class="toolbar-btn text-slate-600 hover:bg-slate-50 border-slate-100 flex-shrink-0">
+                    <Settings class="w-3.5 h-3.5 md:w-4 h-4" />
+                    <span>{{ props.t('common.settings') }}</span>
+                </button>
+            </div>
+
+            <div class="md:hidden flex items-center">
+                <button
+                    @click="isToolsExpanded = !isToolsExpanded"
+                    class="flex items-center gap-2 px-3 py-1.5 bg-slate-50 border border-slate-200 rounded-lg text-slate-600 active:bg-slate-100 transition-colors"
+                >
+                    <Menu v-if="!isToolsExpanded" class="w-4 h-4" />
+                    <X v-else class="w-4 h-4" />
+                    <span class="text-xs font-bold">{{ props.t('common.tools') || 'Tools' }}</span>
+                    <ChevronDown v-if="!isToolsExpanded" class="w-3 h-3 opacity-50" />
+                    <ChevronUp v-else class="w-3 h-3 opacity-50" />
+                </button>
+            </div>
+        </div>
+
+        <div class="flex items-center gap-2 md:gap-3 flex-shrink-0">
+            <button
+                @click="emit('toggle-locale')"
+                class="p-1.5 md:p-2 hover:bg-slate-100 rounded-md transition-colors text-slate-400 font-bold text-[10px] md:text-xs flex items-center gap-1"
+            >
+                <Globe class="w-3 h-3 md:w-3.5 h-3.5" /> {{ props.locale === 'zh' ? 'EN' : 'ZH' }}
+            </button>
+        </div>
+    </nav>
+
+    <Transition
+        enter-active-class="transition duration-200 ease-out"
+        enter-from-class="transform -translate-y-4 opacity-0"
+        enter-to-class="transform translate-y-0 opacity-100"
+        leave-active-class="transition duration-150 ease-in"
+        leave-from-class="transform translate-y-0 opacity-100"
+        leave-to-class="transform -translate-y-4 opacity-0"
+    >
+        <div v-if="isToolsExpanded" class="md:hidden absolute top-[57px] left-0 right-0 bg-white/95 backdrop-blur-md border-b border-slate-200 shadow-xl z-40 py-4 px-4 flex flex-wrap gap-3 justify-center">
+            <button @click="callAndClose(props.onFit)" class="toolbar-btn text-blue-500 hover:bg-blue-50 border-blue-100" :title="props.t('nav.fit')">
+                <Focus class="w-4 h-4" />
+                <span>{{ props.t('nav.fit') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onResetLayout)" class="toolbar-btn text-purple-500 hover:bg-purple-50 border-purple-100" :title="props.t('nav.layout')">
+                <LayoutDashboard class="w-4 h-4" />
+                <span>{{ props.t('nav.layout') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onCenterRoot)" class="toolbar-btn text-orange-500 hover:bg-orange-50 border-orange-100" :title="props.t('nav.center')">
+                <Target class="w-4 h-4" />
+                <span>{{ props.t('nav.center') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onStartNewSession)" class="toolbar-btn text-red-500 hover:bg-red-50 border-red-100" :title="props.t('nav.reset')">
+                <Trash2 class="w-4 h-4" />
+                <span>{{ props.t('nav.reset') }}</span>
+            </button>
+
+            <div class="flex items-center gap-2 px-3 py-1.5 bg-slate-50 rounded-lg border border-slate-100">
+                <Palette class="w-4 h-4 text-slate-400" />
+                <input type="color" v-model="props.config.edgeColor" class="w-4 h-4 rounded cursor-pointer bg-transparent border-none" />
+                <span class="text-[10px] font-bold text-slate-500 uppercase">{{ props.t('nav.edge') }}</span>
+            </div>
+
+            <select v-model="props.config.backgroundVariant" class="toolbar-select">
+                <option :value="BackgroundVariant.Lines">{{ props.t('nav.lines') }}</option>
+                <option :value="BackgroundVariant.Dots">{{ props.t('nav.dots') }}</option>
+            </select>
+
+            <button
+                @click="props.config.showMiniMap = !props.config.showMiniMap"
+                class="toolbar-btn border-slate-100"
+                :class="props.config.showMiniMap ? 'text-blue-500 bg-blue-50 border-blue-100' : 'text-slate-400 hover:text-slate-600'"
+                :title="props.t('nav.map')"
+            >
+                <Map class="w-4 h-4" />
+                <span>{{ props.t('nav.map') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onGenerateSummary)" class="toolbar-btn text-orange-600 hover:bg-orange-50 border-orange-100" :title="props.t('nav.summary')">
+                <Sparkles class="w-4 h-4" />
+                <span>{{ props.t('nav.summary') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onExportMarkdown)" class="toolbar-btn text-indigo-600 hover:bg-indigo-50 border-indigo-100" :title="props.t('nav.export')">
+                <Download class="w-4 h-4" />
+                <span>{{ props.t('nav.export') }}</span>
+            </button>
+
+            <button @click="callAndClose(props.onOpenSettings)" class="toolbar-btn text-slate-600 hover:bg-slate-50 border-slate-100">
+                <Settings class="w-4 h-4" />
+                <span>{{ props.t('common.settings') }}</span>
+            </button>
+        </div>
+    </Transition>
+</template>
diff --git a/src/components/WindowNode.vue b/src/components/WindowNode.vue
new file mode 100644
index 0000000..373f0d4
--- /dev/null
+++ b/src/components/WindowNode.vue
@@ -0,0 +1,239 @@
+<script setup lang="ts">
+/**
+ * 自定义节点：WindowNode
+ * - 展示节点标题、描述、错误态、图片、深挖内容、followUp 输入
+ * - 将用户交互（深挖/配图/继续扩展）转发给 useThinkFlow 的动作函数
+ * - 使用 activePath 对非路径节点做弱化处理，突出当前上下文
+ */
+
+// 组件状态
+import { ref } from 'vue'
+
+// VueFlow：连接点
+import { Handle, Position } from '@vue-flow/core'
+
+// 图标：节点 UI
+import {
+    ArrowRight,
+    BookOpen,
+    ChevronRight,
+    Image as ImageIcon,
+    Maximize2,
+    RefreshCw,
+    Shield,
+    Terminal,
+    X
+} from 'lucide-vue-next'
+
+/**
+ * props：
+ * - id/data/selected：VueFlow 提供的节点数据
+ * - t/config：全局翻译与样式配置
+ * - activeNodeId/activePath：用于路径高亮与节点弱化
+ * - flowNodes/updateNode/deepDive/generateNodeImage/expandIdea：由 App/useThinkFlow 传入的能力
+ */
+const props = defineProps<{
+    id: string
+    data: any
+    selected: boolean
+    t: any
+    config: any
+    activeNodeId: string | null
+    activePath: { nodeIds: Set<string>; edgeIds: Set<string> }
+    flowNodes: any[]
+    updateNode: (id: string, payload: any) => void
+    deepDive: (id: string, topic: string) => void
+    generateNodeImage: (id: string, prompt: string) => void
+    expandIdea: (param?: any, customInput?: string) => void
+}>()
+
+/**
+ * preview：请求 App 打开图片预览弹窗
+ */
+const emit = defineEmits<{
+    (e: 'preview', url: string): void
+}>()
+
+/**
+ * followUp 输入框是否聚焦（用于边框高亮）
+ */
+const isFocused = ref(false)
+
+/**
+ * 从 flowNodes 中找到节点当前位置，用于扩展时定位新节点生成的参考坐标
+ */
+const getNodePosition = (id: string) => props.flowNodes.find(n => n.id === id)?.position
+</script>
+
+<template>
+    <div
+        class="window-node group transition-all duration-500"
+        :class="{
+            'opacity-40 grayscale-[0.4] blur-[0.5px] scale-[0.98] pointer-events-none': props.activeNodeId && !props.activePath.nodeIds.has(props.id),
+            'opacity-100 grayscale-0 blur-0 scale-105 z-50 ring-2 ring-offset-4': props.activePath.nodeIds.has(props.id),
+            '!w-[450px]': props.data.isDetailExpanded
+        }"
+        :style="{
+            borderColor: props.activePath.nodeIds.has(props.id) ? props.config.edgeColor : props.config.edgeColor + '40',
+            boxShadow: props.activeNodeId === props.id ? `0 20px 50px -12px ${props.config.edgeColor}40` : '',
+            '--tw-ring-color': props.selected ? props.config.edgeColor + '40' : 'transparent'
+        }"
+    >
+        <Handle type="target" :position="Position.Left" class="!bg-transparent !border-none" />
+        <Handle type="source" :position="Position.Right" class="!bg-transparent !border-none" />
+
+        <div class="window-header" :style="{ backgroundColor: props.activePath.nodeIds.has(props.id) ? props.config.edgeColor + '15' : props.config.edgeColor + '05' }">
+            <div class="flex gap-1.5">
+                <div class="w-2 h-2 rounded-full" :style="{ backgroundColor: props.activePath.nodeIds.has(props.id) ? props.config.edgeColor : props.config.edgeColor + '40' }"></div>
+                <div class="w-2 h-2 rounded-full bg-slate-200"></div>
+                <div class="w-2 h-2 rounded-full bg-slate-200"></div>
+            </div>
+            <span class="window-title" :style="{ color: props.activePath.nodeIds.has(props.id) ? props.config.edgeColor : '' }">
+                {{ props.data.type === 'root' ? props.t('node.mainTitle') : props.t('node.moduleTitle') }}
+            </span>
+        </div>
+
+        <div v-if="props.data.isExpanding" class="absolute inset-0 z-20 flex flex-col items-center justify-center bg-white/60 backdrop-blur-[2px] rounded-2xl transition-all duration-300">
+            <div class="relative">
+                <RefreshCw class="w-8 h-8 text-slate-900 animate-spin mb-3" :style="{ color: props.config.edgeColor }" />
+                <div class="absolute inset-0 blur-xl opacity-20 animate-pulse" :style="{ backgroundColor: props.config.edgeColor }"></div>
+            </div>
+            <span class="text-[10px] font-black tracking-widest uppercase text-slate-500">{{ props.t('common.expanding') }}</span>
+        </div>
+
+        <div class="window-content">
+            <div
+                v-if="props.data.imageUrl || props.data.isImageLoading"
+                class="mb-4 rounded-lg overflow-hidden bg-slate-50 border border-slate-100 aspect-video flex items-center justify-center relative group/img cursor-pointer"
+                @click.stop="props.data.imageUrl ? emit('preview', props.data.imageUrl) : null"
+            >
+                <img v-if="props.data.imageUrl" :src="props.data.imageUrl" class="w-full h-full object-cover" />
+                <div v-if="props.data.isImageLoading" class="absolute inset-0 flex flex-col items-center justify-center bg-white/80 backdrop-blur-sm cursor-default">
+                    <RefreshCw class="w-6 h-6 text-orange-500 animate-spin mb-2" />
+                    <span class="text-[8px] font-bold text-slate-400 uppercase">{{ props.t('common.generating') }}</span>
+                </div>
+                <div v-if="props.data.imageUrl" class="absolute inset-0 bg-black/40 opacity-0 group-hover/img:opacity-100 transition-opacity flex items-center justify-center gap-2">
+                    <button class="p-2 bg-white/20 hover:bg-white/40 rounded-full backdrop-blur-md transition-all" :title="props.t('node.view')">
+                        <Maximize2 class="w-4 h-4 text-white" />
+                    </button>
+                    <button
+                        @click.stop="props.generateNodeImage(props.id, props.data.label)"
+                        class="p-2 bg-white/20 hover:bg-white/40 rounded-full backdrop-blur-md transition-all"
+                        :title="props.t('node.regenerate')"
+                    >
+                        <RefreshCw class="w-4 h-4 text-white" />
+                    </button>
+                </div>
+            </div>
+
+            <div class="flex items-start gap-2 mb-2">
+                <span class="font-bold shrink-0 mt-0.5" :style="{ color: props.config.edgeColor }">></span>
+                <h3
+                    class="font-black text-slate-900 tracking-tight cursor-pointer hover:text-orange-600 transition-colors"
+                    :class="props.data.isTitleExpanded ? 'whitespace-normal' : 'truncate'"
+                    @click.stop="props.updateNode(props.id, { data: { ...props.data, isTitleExpanded: !props.data.isTitleExpanded } })"
+                >
+                    {{ props.data.label }}
+                </h3>
+            </div>
+
+            <p class="text-[10px] text-slate-500 leading-relaxed font-medium line-clamp-3">
+                {{ props.data.description }}
+            </p>
+
+            <div v-if="props.data.error" class="mt-3 p-2.5 bg-red-50 border border-red-100 rounded-lg animate-in fade-in slide-in-from-top-1 duration-300">
+                <div class="flex items-start gap-2">
+                    <Shield class="w-3.5 h-3.5 text-red-500 shrink-0 mt-0.5" />
+                    <div class="flex-grow space-y-1">
+                        <p class="text-[10px] font-black text-red-600 leading-tight">{{ props.t('common.error.title') }}</p>
+                        <p class="text-[9px] text-red-500 leading-relaxed">{{ props.data.error }}</p>
+                    </div>
+                    <button
+                        @click.stop="props.data.imageUrl === null && props.data.isImageLoading === false ? props.generateNodeImage(props.id, props.data.label) : props.expandIdea({ id: props.id, data: props.data, position: getNodePosition(props.id) })"
+                        class="p-1 hover:bg-red-100 rounded transition-colors"
+                        :title="props.t('common.error.retry')"
+                    >
+                        <RefreshCw class="w-3 h-3 text-red-600" />
+                    </button>
+                </div>
+            </div>
+
+            <div class="pt-3 mt-3 border-t border-slate-50">
+                <div class="flex items-center justify-between mb-3">
+                    <div class="flex items-center gap-1.5 shrink-0">
+                        <div class="w-1.5 h-1.5 rounded-full animate-pulse" :style="{ backgroundColor: props.data.isExpanding ? props.config.edgeColor : '#34d399' }"></div>
+                        <span class="text-[9px] font-bold text-slate-400 uppercase tracking-tighter">{{
+                            props.data.isExpanding ? props.t('common.expanding') : props.t('common.active')
+                        }}</span>
+                    </div>
+
+                    <div class="flex items-center gap-2">
+                        <button
+                            @click.stop="props.deepDive(props.id, props.data.label)"
+                            class="action-btn text-orange-500 hover:bg-orange-50"
+                            :title="props.t('node.deepDive')"
+                        >
+                            <BookOpen class="w-2.5 h-2.5" />
+                            <span>{{ props.t('node.deepDive') }}</span>
+                        </button>
+                        <button
+                            v-if="!props.data.imageUrl && !props.data.isImageLoading"
+                            @click.stop="props.generateNodeImage(props.id, props.data.label)"
+                            class="action-btn text-blue-500 hover:bg-blue-50"
+                        >
+                            <ImageIcon class="w-2.5 h-2.5" />
+                            <span>{{ props.t('node.imgAction') }}</span>
+                        </button>
+                    </div>
+                </div>
+
+                <div v-if="props.data.isDetailExpanded" class="mb-4 pt-4 border-t border-slate-100 animate-in fade-in slide-in-from-top-2 duration-300">
+                    <div class="flex items-center justify-between mb-2">
+                        <span class="text-[9px] font-black text-slate-400 uppercase tracking-widest">{{ props.t('node.deepDive') }}</span>
+                        <button @click.stop="props.updateNode(props.id, { data: { ...props.data, isDetailExpanded: false } })" class="text-slate-300 hover:text-slate-500">
+                            <X class="w-3 h-3" />
+                        </button>
+                    </div>
+                    <div v-if="props.data.isDeepDiving" class="flex flex-col items-center py-6">
+                        <div class="relative mb-3">
+                            <RefreshCw class="w-6 h-6 text-orange-400 animate-spin" />
+                            <div class="absolute inset-0 blur-lg bg-orange-200 opacity-50 animate-pulse"></div>
+                        </div>
+                        <span class="text-[9px] font-black text-slate-300 uppercase tracking-widest animate-pulse">{{ props.t('common.loading') }}</span>
+                    </div>
+                    <div v-else class="text-[11px] text-slate-600 leading-relaxed font-medium whitespace-pre-wrap max-h-[350px] overflow-y-auto custom-scrollbar pr-2 selection:bg-orange-100 nowheel">
+                        {{ props.data.detailedContent }}
+                    </div>
+                </div>
+
+                <div class="relative group/input">
+                    <div
+                        class="flex items-center gap-2 bg-slate-50 rounded-lg px-2.5 py-2 border border-slate-100 focus-within:bg-white transition-all"
+                        :style="{ borderColor: props.data.followUp || isFocused ? props.config.edgeColor : '' }"
+                    >
+                        <ChevronRight v-if="!props.data.followUp" class="w-3 h-3 text-slate-400" />
+                        <Terminal v-else class="w-3 h-3" :style="{ color: props.config.edgeColor }" />
+                        <input
+                            v-model="props.data.followUp"
+                            @focus="isFocused = true"
+                            @blur="isFocused = false"
+                            @keyup.enter="props.expandIdea({ id: props.id, data: props.data, position: getNodePosition(props.id) }, props.data.followUp)"
+                            :placeholder="props.t('node.followUp')"
+                            class="bg-transparent border-none outline-none text-[10px] font-bold text-slate-700 flex-grow placeholder:text-slate-300"
+                            :disabled="props.data.isExpanding"
+                        />
+                        <button
+                            @click.stop="props.expandIdea({ id: props.id, data: props.data, position: getNodePosition(props.id) }, props.data.followUp)"
+                            :disabled="!props.data.followUp?.trim() || props.data.isExpanding"
+                            class="transition-all transform active:scale-90"
+                            :style="{ color: props.data.followUp?.trim() ? props.config.edgeColor : '#cbd5e1' }"
+                        >
+                            <RefreshCw v-if="props.data.isExpanding" class="w-3.5 h-3.5 animate-spin" />
+                            <ArrowRight v-else class="w-3.5 h-3.5" />
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</template>
diff --git a/src/composables/useThinkFlow.ts b/src/composables/useThinkFlow.ts
new file mode 100644
index 0000000..57ec998
--- /dev/null
+++ b/src/composables/useThinkFlow.ts
@@ -0,0 +1,755 @@
+/**
+ * ThinkFlow 核心业务 composable
+ * - 统一管理：画布状态（节点/边）、交互状态、API 调用、错误处理与导出能力
+ * - 对外提供：页面与组件可直接调用的状态与动作（expand / deepDive / image / summary 等）
+ */
+
+import { computed, reactive, ref, watch, type Ref } from 'vue'
+import { MarkerType, Position, useVueFlow } from '@vue-flow/core'
+import { BackgroundVariant } from '@vue-flow/background'
+
+/**
+ * i18n 翻译函数类型（等价于 vue-i18n 的 t）
+ */
+type Translate = (key: string, params?: any) => string
+
+/**
+ * 创建 ThinkFlow 的业务上下文。
+ * @param t 国际化翻译函数
+ * @param locale 当前语言（用于持久化语言选择）
+ */
+export function useThinkFlow({ t, locale }: { t: Translate; locale: Ref<string> }) {
+    /**
+     * 默认模式下的 API Key（当前不使用环境变量注入）。
+     * - 如需鉴权，请通过 Settings 的 Custom 模式填写 apiKey
+     */
+    const API_KEY = ''
+
+    /**
+     * API 配置（支持默认/自定义两种模式）
+     * - 自定义模式写入 localStorage，刷新后仍保留
+     */
+    const apiConfig = reactive({
+        mode: localStorage.getItem('api_mode') || 'default',
+        chat: {
+            baseUrl: localStorage.getItem('chat_baseUrl') || '',
+            model: localStorage.getItem('chat_model') || '',
+            apiKey: localStorage.getItem('chat_apiKey') || ''
+        },
+        image: {
+            baseUrl: localStorage.getItem('image_baseUrl') || '',
+            model: localStorage.getItem('image_model') || '',
+            apiKey: localStorage.getItem('image_apiKey') || ''
+        }
+    })
+
+    /**
+     * 默认接口配置（当用户选择默认模式时使用）
+     * - apiKey 允许为空：会回退到 API_KEY（环境变量）
+     */
+    const DEFAULT_CONFIG = {
+        chat: {
+            baseUrl: 'https://thinkflow.lz-t.top/chat/completions',
+            model: 'glm-4-flash',
+            apiKey: ''
+        },
+        image: {
+            baseUrl: 'https://thinkflow.lz-t.top/images/generations',
+            model: 'cogview-3-flash',
+            apiKey: ''
+        }
+    }
+
+    /**
+     * 语言选择持久化（与 i18n/index.ts 中的初始化配合）
+     */
+    watch(
+        () => locale.value,
+        newVal => {
+            localStorage.setItem('language', newVal)
+        }
+    )
+
+    /**
+     * API 配置持久化：任何字段变化都会更新 localStorage
+     */
+    watch(
+        () => apiConfig,
+        newVal => {
+            localStorage.setItem('api_mode', newVal.mode)
+            localStorage.setItem('chat_baseUrl', newVal.chat.baseUrl)
+            localStorage.setItem('chat_model', newVal.chat.model)
+            localStorage.setItem('chat_apiKey', newVal.chat.apiKey)
+            localStorage.setItem('image_baseUrl', newVal.image.baseUrl)
+            localStorage.setItem('image_model', newVal.image.model)
+            localStorage.setItem('image_apiKey', newVal.image.apiKey)
+        },
+        { deep: true }
+    )
+
+    /**
+     * 设置弹窗开关（由顶部导航触发）
+     */
+    const showSettings = ref(false)
+
+    /**
+     * VueFlow 实例能力集合：节点/边增删改与视图控制
+     */
+    const {
+        addNodes,
+        addEdges,
+        setNodes,
+        setEdges,
+        nodes: flowNodes,
+        edges: flowEdges,
+        updateNode,
+        fitView,
+        onNodeDragStart,
+        onNodeDragStop
+    } = useVueFlow()
+
+    /**
+     * 全局输入与对话状态
+     */
+    const ideaInput = ref('')
+    const isLoading = ref(false)
+    const previewImageUrl = ref<string | null>(null)
+    const showResetConfirm = ref(false)
+    const showSummaryModal = ref(false)
+    const isSummarizing = ref(false)
+    const summaryContent = ref('')
+
+    const draggingNodeId = ref<string | null>(null)
+
+    /**
+     * 交互：按住 Space 启用“抓手拖拽画布”
+     * - isSpacePressed 用于在 UI 层展示手型光标
+     * - panOnDrag 控制 VueFlow 的拖拽行为（按 Space 时总是允许拖拽画布）
+     */
+    const panOnDrag = ref(true)
+    const isSpacePressed = ref(false)
+
+    window.addEventListener('keydown', e => {
+        if (e.code === 'Space' && !['INPUT', 'TEXTAREA'].includes((e.target as HTMLElement).tagName)) {
+            isSpacePressed.value = true
+            panOnDrag.value = true
+        }
+    })
+
+    window.addEventListener('keyup', e => {
+        if (e.code === 'Space') {
+            isSpacePressed.value = false
+        }
+    })
+
+    /**
+     * 用拖拽节点作为“当前激活节点”的一种来源，便于高亮路径/聚焦
+     */
+    onNodeDragStart(e => {
+        draggingNodeId.value = e.node.id
+    })
+
+    onNodeDragStop(() => {
+        draggingNodeId.value = null
+    })
+
+    /**
+     * 当前激活节点 id
+     * 优先级：正在展开的节点 > 选中的节点 > 正在拖拽的节点
+     */
+    const activeNodeId = computed(() => {
+        const expandingNode = flowNodes.value.find(n => n.data.isExpanding)
+        const selectedNode = flowNodes.value.find(n => n.selected)
+        return expandingNode?.id || selectedNode?.id || draggingNodeId.value
+    })
+
+    /**
+     * 获取某节点所有后代节点 id（用于激活路径计算）
+     */
+    const getDescendantIds = (nodeId: string, ids: Set<string> = new Set()): Set<string> => {
+        flowEdges.value.forEach(edge => {
+            if (edge.source === nodeId) {
+                ids.add(edge.target)
+                getDescendantIds(edge.target, ids)
+            }
+        })
+        return ids
+    }
+
+    /**
+     * 当前激活路径（节点集合 + 边集合）
+     * - 向上：从激活节点回溯到根
+     * - 向下：包含激活节点的所有后代
+     * 用于：
+     * - 节点高亮/弱化
+     * - 边高亮/动画
+     */
+    const activePath = computed(() => {
+        const nodeIds = new Set<string>()
+        const edgeIds = new Set<string>()
+
+        if (!activeNodeId.value) return { nodeIds, edgeIds }
+
+        const targetId = activeNodeId.value
+        nodeIds.add(targetId)
+
+        let currentId = targetId
+        while (currentId) {
+            const edge = flowEdges.value.find(e => e.target === currentId)
+            if (edge) {
+                edgeIds.add(edge.id)
+                nodeIds.add(edge.source)
+                currentId = edge.source
+            } else {
+                break
+            }
+        }
+
+        const descendantIds = getDescendantIds(targetId)
+        descendantIds.forEach(id => nodeIds.add(id))
+
+        flowEdges.value.forEach(edge => {
+            if (nodeIds.has(edge.source) && nodeIds.has(edge.target)) {
+                edgeIds.add(edge.id)
+            }
+        })
+
+        return { nodeIds, edgeIds }
+    })
+
+    const config = reactive({
+        edgeColor: '#fed7aa',
+        edgeStyle: 'smoothstep',
+        backgroundVariant: BackgroundVariant.Lines,
+        showControls: true,
+        showMiniMap: true
+    })
+
+    const lastAppliedStatus = ref('')
+
+    /**
+     * 根据激活路径与配置，动态更新边的样式（高亮/透明度/动画）
+     * - 通过 lastAppliedStatus 避免无效重复 setEdges
+     */
+    watch(
+        [() => activeNodeId.value, () => config.edgeColor, () => flowEdges.value.length, () => flowNodes.value.some(n => n.data.isExpanding)],
+        ([, newColor, , anyExpanding]) => {
+            const { edgeIds } = activePath.value
+            const edgeIdsStr = Array.from(edgeIds).sort().join(',')
+
+            const currentStatus = `${edgeIdsStr}-${newColor}-${anyExpanding}`
+            if (lastAppliedStatus.value === currentStatus) return
+            lastAppliedStatus.value = currentStatus
+
+            setEdges(
+                flowEdges.value.map(edge => {
+                    const isHighlighted = edgeIds.has(edge.id)
+                    const isExpanding = !!flowNodes.value.find(n => n.id === edge.source)?.data.isExpanding
+
+                    return {
+                        ...edge,
+                        animated: isHighlighted || isExpanding,
+                        style: {
+                            ...edge.style,
+                            stroke: isHighlighted ? newColor : `${newColor}33`,
+                            strokeWidth: isHighlighted ? 3 : 2,
+                            transition: 'all 0.3s ease'
+                        }
+                    }
+                })
+            )
+        },
+        { immediate: true }
+    )
+
+    /**
+     * 将网络/接口异常转换为用户可读的错误文案
+     */
+    const getErrorMessage = (error: any) => {
+        if (error.name === 'TypeError' && error.message === 'Failed to fetch') {
+            return t('common.error.cors')
+        }
+        if (error.status === 429) return t('common.error.rateLimit')
+        if (error.status === 400) return t('common.error.badRequest')
+        if (error.status >= 500) return t('common.error.serverError')
+        return error.message || t('common.error.unknown')
+    }
+
+    /**
+     * 视图：将根节点居中显示
+     */
+    const centerRoot = () => {
+        const rootNode = flowNodes.value.find(n => n.data.type === 'root')
+        if (rootNode) {
+            fitView({ nodes: [rootNode.id], padding: 2, duration: 800 })
+        }
+    }
+
+    /**
+     * 布局：从根节点开始按“横向树形”重新排布节点位置
+     * - 主要用于整理节点过多导致的视觉拥挤
+     */
+    const resetLayout = () => {
+        const rootNode = flowNodes.value.find(n => n.data.type === 'root')
+        if (!rootNode) return
+
+        const visited = new Set<string>()
+        const layoutNode = (nodeId: string, x: number, y: number) => {
+            if (visited.has(nodeId)) return
+            visited.add(nodeId)
+
+            const node = flowNodes.value.find(n => n.id === nodeId)
+            if (node) {
+                node.position = { x, y }
+
+                const childEdges = flowEdges.value.filter(e => e.source === nodeId)
+                childEdges.forEach((edge, index) => {
+                    const offsetX = 450
+                    const totalHeight = (childEdges.length - 1) * 280
+                    const startY = y - totalHeight / 2
+                    const offsetY = index * 280
+
+                    layoutNode(edge.target, x + offsetX, startY + offsetY)
+                })
+            }
+        }
+
+        layoutNode(rootNode.id, 50, 300)
+
+        setTimeout(() => {
+            fitView({ padding: 0.2, duration: 800 })
+        }, 100)
+    }
+
+    /**
+     * 导出：将当前树形结构导出为 Markdown
+     * - 以 root 为标题
+     * - 子节点按缩进列表输出
+     * - deepDive 生成的详细内容以引用块输出
+     */
+    const exportMarkdown = () => {
+        if (flowNodes.value.length === 0) return
+
+        const rootNode = flowNodes.value.find(n => n.data.type === 'root')
+        if (!rootNode) return
+
+        let markdown = `# ${rootNode.data.label}\n\n`
+
+        const buildMarkdown = (parentId: string, level: number) => {
+            const children = flowEdges.value
+                .filter(e => e.source === parentId)
+                .map(e => flowNodes.value.find(n => n.id === e.target))
+                .filter(n => n !== undefined)
+
+            children.forEach(child => {
+                const indent = '  '.repeat(level - 1)
+                markdown += `${indent}- ${child!.data.label}\n`
+                if (child!.data.detailedContent) {
+                    const detailIndent = '  '.repeat(level)
+                    markdown += `${detailIndent}> ${child!.data.detailedContent.replace(/\n/g, `\n${detailIndent}> `)}\n`
+                }
+                buildMarkdown(child!.id, level + 1)
+            })
+        }
+
+        buildMarkdown(rootNode.id, 1)
+
+        const blob = new Blob([markdown], { type: 'text/markdown' })
+        const url = URL.createObjectURL(blob)
+        const link = document.createElement('a')
+        link.download = `thinkflow-${rootNode.data.label}-${Date.now()}.md`
+        link.href = url
+        link.click()
+        URL.revokeObjectURL(url)
+    }
+
+    /**
+     * 总结：基于当前所有节点信息生成一段总结文本
+     * - 结果展示在 SummaryModal
+     */
+    const generateSummary = async () => {
+        if (flowNodes.value.length === 0) return
+
+        showSummaryModal.value = true
+        isSummarizing.value = true
+        summaryContent.value = ''
+
+        const nodesInfo = flowNodes.value.map(n => ({
+            label: n.data.label,
+            description: n.data.description,
+            type: n.data.type
+        }))
+
+        const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
+        const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
+
+        try {
+            const response = await fetch(useConfig.baseUrl, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    Authorization: `Bearer ${finalApiKey}`
+                },
+                body: JSON.stringify({
+                    model: useConfig.model,
+                    messages: [
+                        {
+                            role: 'user',
+                            content: t('prompts.summaryPrompt', {
+                                nodes: JSON.stringify(nodesInfo, null, 2)
+                            })
+                        }
+                    ]
+                })
+            })
+
+            if (!response.ok) throw new Error('Summary request failed')
+
+            const data = await response.json()
+            summaryContent.value = data.choices[0].message.content
+        } catch (error) {
+            console.error('Summary Generation Error:', error)
+            summaryContent.value = t('common.error.unknown')
+        } finally {
+            isSummarizing.value = false
+        }
+    }
+
+    /**
+     * 图片：为指定节点生成配图
+     * - 节点会进入 isImageLoading 状态
+     * - 成功后写入 imageUrl，用于节点卡片与预览弹窗展示
+     */
+    const generateNodeImage = async (nodeId: string, prompt: string) => {
+        const node = flowNodes.value.find(n => n.id === nodeId)
+        if (!node || node.data.isImageLoading) return
+
+        updateNode(nodeId, ((n: any) => ({ ...n, selected: true, zIndex: 1000 })) as any)
+
+        updateNode(nodeId, { data: { ...node.data, isImageLoading: true, error: null } })
+
+        const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.image : apiConfig.image
+        const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
+
+        try {
+            const response = await fetch(useConfig.baseUrl, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    Authorization: `Bearer ${finalApiKey}`
+                },
+                body: JSON.stringify({
+                    model: useConfig.model,
+                    prompt: t('prompts.image', { prompt })
+                })
+            })
+
+            if (!response.ok) {
+                const error: any = new Error('Image request failed')
+                error.status = response.status
+                throw error
+            }
+            const data = await response.json()
+            const imageUrl = data.data[0].url
+
+            updateNode(nodeId, { data: { ...node.data, imageUrl, isImageLoading: false, error: null } })
+        } catch (error: any) {
+            console.error('Image Generation Error:', error)
+            updateNode(nodeId, { data: { ...node.data, isImageLoading: false, error: getErrorMessage(error) } })
+        }
+    }
+
+    /**
+     * 深挖：针对某个节点生成更详细的解释/拓展内容
+     * - 若已有 detailedContent 且未展开，则直接展开（避免重复请求）
+     */
+    const deepDive = async (nodeId: string, topic: string) => {
+        const node = flowNodes.value.find(n => n.id === nodeId)
+        if (!node) return
+
+        updateNode(nodeId, ((n: any) => ({ ...n, selected: true, zIndex: 1000 })) as any)
+
+        if (node.data.detailedContent && !node.data.isDetailExpanded) {
+            updateNode(nodeId, { data: { ...node.data, isDetailExpanded: true } })
+            return
+        }
+
+        if (node.data.isDeepDiving) return
+
+        updateNode(nodeId, { data: { ...node.data, isDeepDiving: true, isDetailExpanded: true, error: null } })
+
+        const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
+        const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
+
+        try {
+            const response = await fetch(useConfig.baseUrl, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    Authorization: `Bearer ${finalApiKey}`
+                },
+                body: JSON.stringify({
+                    model: useConfig.model,
+                    messages: [{ role: 'user', content: t('prompts.deepDivePrompt', { topic }) }]
+                })
+            })
+
+            if (!response.ok) {
+                const error: any = new Error('Deep dive request failed')
+                error.status = response.status
+                throw error
+            }
+            const data = await response.json()
+            const content = data.choices[0].message.content
+
+            updateNode(nodeId, { data: { ...node.data, detailedContent: content, isDeepDiving: false, error: null } })
+        } catch (error: any) {
+            console.error('Deep Dive Error:', error)
+            updateNode(nodeId, { data: { ...node.data, isDeepDiving: false, error: getErrorMessage(error) } })
+        }
+    }
+
+    /**
+     * 生成从根到指定节点的“上下文路径”文本，用于二次扩展时给模型更明确的上下文
+     */
+    const findPathToNode = (nodeId: string): string[] => {
+        const path: string[] = []
+        let currentId = nodeId
+
+        while (currentId) {
+            const node = flowNodes.value.find(n => n.id === currentId)
+            if (node) {
+                path.unshift(`${node.data.label} (${node.data.description})`)
+                const edge = flowEdges.value.find(e => e.target === currentId)
+                currentId = edge ? edge.source : ''
+            } else {
+                break
+            }
+        }
+        return path
+    }
+
+    /**
+     * 将模型返回的子节点数组写入画布，并连边到 parentId
+     */
+    const processSubNodes = (subNodes: any[], parentId: string, baseX: number, baseY: number) => {
+        subNodes.forEach((item: any, index: number) => {
+            const childId = `node-${Date.now()}-${index}`
+            const offsetX = 450
+            const offsetY = (index - (subNodes.length - 1) / 2) * 280
+
+            addNodes({
+                id: childId,
+                type: 'window',
+                position: { x: baseX + offsetX, y: baseY + offsetY },
+                data: {
+                    label: item.text,
+                    description: item.description,
+                    type: 'child',
+                    followUp: '',
+                    isExpanding: false,
+                    isImageLoading: false,
+                    isTitleExpanded: false,
+                    error: null
+                },
+                sourcePosition: Position.Right,
+                targetPosition: Position.Left
+            })
+
+            addEdges({
+                id: `e-${parentId}-${childId}`,
+                source: parentId,
+                target: childId,
+                animated: true,
+                style: { stroke: config.edgeColor, strokeWidth: 2 },
+                markerEnd: MarkerType.ArrowClosed
+            })
+        })
+    }
+
+    /**
+     * 生成/扩展节点
+     * - 无 parentNode：创建 root 节点并生成第一层子节点
+     * - 有 parentNode：基于选中节点生成下一层子节点（支持 followUp 作为追加需求）
+     *
+     * 接口约定：
+     * - chat completion 返回 message.content 为 JSON 字符串
+     * - response_format: { type: 'json_object' } 用于提高 JSON 输出稳定性
+     */
+    const expandIdea = async (param?: any, customInput?: string) => {
+        const parentNode = param && param.id ? param : undefined
+        const text = customInput || (parentNode ? parentNode.data.label : ideaInput.value)
+
+        if (!text || (parentNode ? parentNode.data.isExpanding : isLoading.value)) return
+
+        let currentParentId = parentNode?.id
+
+        if (!parentNode) {
+            isLoading.value = true
+            setNodes([])
+            setEdges([])
+
+            const rootId = 'root-' + Date.now()
+            currentParentId = rootId
+
+            addNodes({
+                id: rootId,
+                type: 'window',
+                position: { x: 50, y: 300 },
+                data: {
+                    label: text,
+                    description: t('node.coreIdea'),
+                    type: 'root',
+                    isExpanding: true,
+                    isTitleExpanded: false,
+                    followUp: '',
+                    error: null
+                },
+                sourcePosition: Position.Right,
+                targetPosition: Position.Left
+            })
+
+            ideaInput.value = ''
+        } else {
+            const node = flowNodes.value.find(n => n.id === parentNode.id)
+            if (node) {
+                updateNode(parentNode.id, {
+                    data: {
+                        ...node.data,
+                        isExpanding: true,
+                        isDetailExpanded: false,
+                        error: null
+                    }
+                })
+            }
+        }
+
+        const systemPrompt = t('prompts.system')
+
+        let userMessage = ''
+        if (parentNode) {
+            const path = findPathToNode(parentNode.id)
+            userMessage = `[${t('prompts.contextPath')}]: ${path.join(' -> ')}\n[${t('prompts.selectedNode')}]: ${parentNode.data.label}\n[${t('prompts.newRequirement')}]: ${customInput || t('prompts.continue')}`
+        } else {
+            userMessage = `${t('prompts.coreIdeaPrefix')}: ${text}`
+        }
+
+        const useConfig = apiConfig.mode === 'default' ? DEFAULT_CONFIG.chat : apiConfig.chat
+        const finalApiKey = apiConfig.mode === 'default' ? useConfig.apiKey || API_KEY : useConfig.apiKey
+
+        try {
+            const response = await fetch(useConfig.baseUrl, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    Authorization: `Bearer ${finalApiKey}`
+                },
+                body: JSON.stringify({
+                    model: useConfig.model,
+                    messages: [
+                        { role: 'system', content: systemPrompt },
+                        { role: 'user', content: userMessage }
+                    ],
+                    response_format: { type: 'json_object' },
+                    temperature: 0.8
+                })
+            })
+
+            if (!response.ok) {
+                const error: any = new Error('AI request failed')
+                error.status = response.status
+                throw error
+            }
+            const data = await response.json()
+            const result = JSON.parse(data.choices[0].message.content)
+
+            const parentNodeObj = flowNodes.value.find(n => n.id === currentParentId)
+            const startX = parentNodeObj ? parentNodeObj.position.x : 50
+            const startY = parentNodeObj ? parentNodeObj.position.y : 300
+
+            processSubNodes(result.nodes, currentParentId, startX, startY)
+
+            if (!parentNode) {
+                setTimeout(() => {
+                    const childEdges = flowEdges.value.filter(e => e.source === currentParentId)
+                    const childIds = childEdges.map(e => e.target)
+
+                    const nodesToFit = [currentParentId, ...childIds.slice(0, 3)]
+
+                    fitView({
+                        nodes: nodesToFit,
+                        padding: 0.25,
+                        duration: 1000
+                    })
+                }, 100)
+            }
+        } catch (error: any) {
+            console.error('Expansion Error:', error)
+            const node = flowNodes.value.find(n => n.id === currentParentId)
+            if (node) {
+                updateNode(currentParentId, { data: { ...node.data, error: getErrorMessage(error) } })
+            }
+        } finally {
+            const node = flowNodes.value.find(n => n.id === currentParentId)
+            if (node) {
+                node.data.isExpanding = false
+            }
+            isLoading.value = false
+        }
+    }
+
+    /**
+     * 立即清空当前画布与输入，并关闭确认弹窗
+     */
+    const executeReset = () => {
+        ideaInput.value = ''
+        setNodes([])
+        setEdges([])
+        showResetConfirm.value = false
+    }
+
+    /**
+     * 新会话入口
+     * - 若当前已有节点：弹出二次确认
+     * - 若为空：直接清空（等价 executeReset）
+     */
+    const startNewSession = () => {
+        if (flowNodes.value.length > 0) {
+            showResetConfirm.value = true
+            return
+        }
+        executeReset()
+    }
+
+    return {
+        apiConfig,
+        DEFAULT_CONFIG,
+        showSettings,
+        ideaInput,
+        isLoading,
+        previewImageUrl,
+        showResetConfirm,
+        showSummaryModal,
+        isSummarizing,
+        summaryContent,
+        panOnDrag,
+        isSpacePressed,
+        config,
+        flowNodes,
+        flowEdges,
+        activeNodeId,
+        activePath,
+        updateNode,
+        fitView,
+        resetLayout,
+        centerRoot,
+        startNewSession,
+        executeReset,
+        generateSummary,
+        exportMarkdown,
+        generateNodeImage,
+        deepDive,
+        expandIdea
+    }
+}
+
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index 4497195..5d55968 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -31,7 +31,7 @@
     "title": "ThinkFlow AI",
     "subtitle": "思维导图 & AI 助手",
     "placeholder": "在这里输入您的想法...",
-    "execute": "发散思维",
+    "execute": "提交问题",
     "reset": "重置",
     "fit": "适配",
     "layout": "布局",
@@ -46,7 +46,7 @@
   "settings": {
     "title": "API 设置",
     "subtitle": "配置您的 AI 接口地址",
-    "textGen": "文本生成 (Chat)",
+    "textGen": "文本生成",
     "imageGen": "图片生成",
     "baseUrl": "接口地址 (Base URL)",
     "modelName": "模型名称",
@@ -55,7 +55,7 @@
     "placeholderModel": "模型名称",
     "placeholderKey": "sk-...",
     "defaultModeTitle": "使用默认接口",
-    "defaultModeDesc": "请求目前正通过系统优化的默认 API 服务进行路由。"
+    "defaultModeDesc": "目前使用Bigmodel(智谱)提供的免费文本生成接口glm-4-flash和图片生成接口cogview-3-flash，为了更好的体验请自定义接口。"
   },
   "node": {
     "root": "根节点",
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index 8b70eb2..11f02fe 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,9 +1 @@
 /// <reference types="vite/client" />
-
-interface ImportMetaEnv {
-  readonly VITE_ZHIPU_AI_API_KEY: string
-}
-
-interface ImportMeta {
-  readonly env: ImportMetaEnv
-}
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..c93fd35
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,18 @@
+{
+    "compilerOptions": {
+        "target": "ES2022",
+        "useDefineForClassFields": true,
+        "module": "ESNext",
+        "moduleResolution": "Bundler",
+        "strict": true,
+        "jsx": "preserve",
+        "resolveJsonModule": true,
+        "isolatedModules": true,
+        "esModuleInterop": true,
+        "lib": ["ES2022", "DOM", "DOM.Iterable"],
+        "skipLibCheck": true,
+        "noEmit": true,
+        "types": ["vite/client"]
+    },
+    "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"]
+}