Merge pull request 'feat(frontend): 统一页面视觉并完善 GitHub 代码主题' (#6) from feat/frontend-visual-polish into main

Reviewed-on: #6

README.md

@@ -136,6 +136,7 @@ pnpm test
 | [前端页面需求](docs/前端页面需求说明-开发版.md) | 页面、交互、状态与验收基线 |
 | [前端实现说明](docs/前端壳子与接口层开发说明.md) | 当前前端目录、Service、SSE 和运行边界 |
 | [前端写作体验](docs/前端写作体验优化开发说明.md) | Milkdown、CodeMirror、格式栏和 Shiki |
+| [前端视觉与轻量动效](docs/前端视觉与轻量动效优化开发说明.md) | Design Token、页面美化、性能边界与主题注入约定 |
 | [Git 使用细则](docs/Git使用细则-团队开发版.md) | 分支、提交、PR、Review 与合并流程 |
 | [后端审阅复盘](docs/后端全面审阅问题与修复复盘.md) | 后端问题原因、后果与修复方案 |
 | [Knowledge/Retrieval 复盘](docs/Knowledge与Retrieval-Core问题与修复复盘.md) | 检索与事务问题复盘 |

docs/前端写作体验优化开发说明.md

@@ -71,6 +71,12 @@ Milkdown 自定义插件在写作模式中隐藏 HTML 标记，并通过 ProseMi
 
 代码高亮使用 Shiki 的 JavaScript 正则引擎，并只注册第一阶段常用语言：Markdown、HTML、CSS、JavaScript、TypeScript、JSON、Python、Shell 和 SQL。未知语言回退为 Markdown 语法展示，不阻塞整篇内容渲染。
 
+Shiki 同时生成 `github-light` 与 `github-dark` 两套 CSS 变量。主题页提供“跟随主题 / GitHub Light / GitHub Dark”选项，通过根节点 `data-code-theme` 切换对应变量，无需重新执行高亮。偏好写入 `editor-appearance`，内置主题和后续主题包也可通过 `ThemeConfig.code_theme` 指定默认代码主题。
+
+代码主题选择器下方使用真实的 `MarkdownContent` 和 Shiki 渲染 TypeScript 示例，选项变化后立即展示对应 GitHub 高亮效果。该预览只存在于主题设置页，不会恢复写作页代码块的额外预览面板。
+
+代码块容器使用 GitHub 风格的背景、边框、6px 圆角、16px 内边距和等宽字体；相关颜色由 `--color-code-*` Token 控制，方便主题商店覆盖。
+
 高亮结果同时生成 `github-light` 和 `github-dark` 颜色变量。根节点的 `data-theme` 变化后由 CSS 选择对应颜色，因此切换主题无需重新解析整篇 Markdown。
 
 写作编辑器中的普通代码块进入文档后直接展开 CodeMirror 编辑区，不再先显示 Shiki 预览，也不再提供“编辑代码/查看高亮”切换，减少一次多余操作。公式块仍由 Milkdown 的 LaTeX 功能负责编辑和渲染。
@@ -109,7 +115,7 @@ pnpm test
 
 文件切换失效包含两层原因。第一层是旧实现先更新 `currentFilePath`、后等待文件内容，导致编辑器使用新路径和旧内容提前重建；现在改为文件读取成功后一次性提交路径和内容。第二层是工作区欢迎笔记的异步初始化结束后会无条件设为活动文件，可能覆盖用户在此期间的真实点击；现在点击文件时立即同步工作区活动路径，默认初始化仅在用户尚未选择文件且欢迎笔记确实加载成功时提交。文件读取失败时则恢复点击前的活动文件。
 
-本地内置浏览器测试运行时因环境资源路径缺失未能启动，因此本次没有把自动化交互测试列为已通过项。合并前建议人工检查一次工具栏选区操作、文件切换同步和亮暗主题下的代码块显示。
+本地内置浏览器测试运行时因环境资源路径缺失未能启动，因此本次没有把自动化交互测试列为已通过项。合并前建议人工检查一次工具栏选区操作、文件切换同步，以及跟随主题、GitHub Light、GitHub Dark 三种代码块设置下的显示效果。
 
 ## 5. 后续建议
 

docs/前端壳子与接口层开发说明.md

@@ -184,13 +184,13 @@ pnpm build
 
 ```text
 pnpm build       passed
-pnpm test        14 passed
+pnpm test        23 passed
 uv run pytest    71 passed
 preview smoke    HTTP 200
 git diff --check passed
 ```
 
-当前前端使用 Vitest 执行 Store、Workspace、文件树和编辑器组件测试；`pnpm build` 同时执行 `vue-tsc -b` 与 Vite 生产构建。后端测试出现过 `.pytest_cache` 无法写入的 Windows 权限警告，不影响 71 项测试结果，也不涉及产品代码。
+当前前端使用 Vitest 执行 Store、Workspace、文件树、编辑器组件、智能体标签、轻量动效约束、Markdown 对比度 Token、scoped CSS 选择器约束和 Shiki GitHub 双主题测试；`pnpm build` 同时执行 `vue-tsc -b` 与 Vite 生产构建。后端测试出现过 `.pytest_cache` 无法写入的 Windows 权限警告，不影响 71 项测试结果，也不涉及产品代码。
 
 Vite 当前会提示 Chat 与 Workspace 的部分异步 Chunk 超过 500 kB，这是 Milkdown、CodeMirror、KaTeX 和 Shiki 等编辑/渲染依赖带来的性能优化项，不影响构建成功或功能正确性；进入桌面打包前应通过手动分包或更细粒度动态加载继续优化。
 

docs/前端视觉与轻量动效优化开发说明.md

@@ -0,0 +1,113 @@
+# 前端视觉与轻量动效优化开发说明
+
+> 更新日期：2026-08-30
+> 适用范围：全局 Design Token、App Shell、功能页、卡片、表单、弹窗和轻量交互动效
+
+## 1. 目标
+
+本轮优化不改变页面功能和前后端契约，主要解决原界面层级偏平、组件间距不统一、交互反馈不足的问题，同时为后续主题商店 CSS 注入保留稳定边界。
+
+设计原则：
+
+- 颜色、圆角、阴影、间距和速度继续使用 CSS 变量；
+- 页面与弹窗动画只改变 `opacity` 和 `transform`；
+- 不使用背景模糊、连续粒子、视差、复杂 SVG 或大范围布局动画；
+- 不使用 `transition: all`，只声明需要变化的属性；
+- 尊重系统 `prefers-reduced-motion` 设置；
+- 主题只需覆盖现有 Token，不需要了解组件内部动画实现。
+
+## 2. 全局视觉基线
+
+更新 `tokens.css`：
+
+- 调整四级圆角和阴影，使卡片、弹窗与导航层次更清楚；
+- 调整标题栏、状态栏和双侧栏尺寸；
+- 统一更短的运动时间与缓动曲线；
+- 增加键盘 `focus-visible` 焦点环；
+- 为 checkbox、radio 和 range 使用主题强调色；
+- 窄窗口下收缩辅助侧栏与展开导航宽度；
+- 在减少动态效果模式下，把动画和过渡缩短到近似即时完成。
+
+更新 `features.css`：
+
+- 功能页增加受控内容宽度、响应式留白和低强度主题渐变；
+- 卡片增加边框、阴影与最多 2px 的悬浮位移；
+- 按钮、输入框、Badge、空状态和通知统一交互反馈；
+- 设置页导航改为分段式卡片导航；
+- 弹窗与页面增加一次性淡入和轻微位移动画。
+
+## 3. 页面与布局优化
+
+### 3.1 App Shell
+
+- 主侧栏增加明确的 Active 标记、悬浮反馈和宽度过渡；
+- 辅助侧栏统一为次级 Surface，并改善标题与标签层级；
+- 标题栏应用名改为轻量胶囊标识；
+- 状态栏强化状态点和窄窗口降级；
+- 命令面板增加轻量入场、圆角、阴影和列表反馈。
+
+### 3.2 业务页面
+
+- Search 结果卡片增加左侧强调线和统一内容宽度；
+- Chat 增加消息容器、头像层级、Citation 悬浮反馈和 Composer 顶部阴影；
+- Agent Tool 选择卡增加选中状态，Trace 使用轻量时间线；
+- Task 完成按钮增加主题化状态反馈；
+- Settings 行在悬浮时提供背景提示；
+- Workspace 空状态与 Vault 入口增加清晰的层级和一次性入场动画。
+
+## 4. 动效性能边界
+
+允许的常规动效：
+
+```text
+opacity
+transform: translate / scale / rotate
+background-color
+border-color
+color
+box-shadow
+```
+
+默认禁止：
+
+```text
+transition: all
+backdrop-filter / filter 模糊
+持续改变 width / height / margin / padding 的动画
+无限循环的装饰动画
+全屏高频渐变或粒子动画
+```
+
+状态栏 Spinner 和 AI Core 检查状态点属于有明确状态含义的循环动画，并会被 `prefers-reduced-motion` 全局规则降级。
+
+## 5. 主题商店接入约定
+
+自定义主题优先覆盖以下 Token：
+
+- `--color-background-*`
+- `--color-surface-*`
+- `--color-text-*`
+- `--color-accent-*`
+- `--color-border-*`
+- `--color-code-*`
+- `--shadow-*`
+- `--radius-*`
+- `--motion-*`
+
+主题 CSS 不应给通配选择器增加动画，不应重新启用高成本滤镜，也不应覆盖 `prefers-reduced-motion` 的降级规则。若主题需要完全静态的界面，可把三个 `--motion-*` Token 设置为接近 0ms。
+
+## 6. 验证
+
+新增 `styles/motion.spec.ts`，防止全局样式重新引入 `transition: all`、高成本模糊滤镜或布局型页面入场动画，并约束 Markdown 表格与列表使用独立的高对比度主题变量。
+
+当前验证结果：
+
+```text
+pnpm test   9 files / 23 tests passed
+pnpm build  passed
+git diff --check passed
+```
+
+生产构建仍有已有的大 Chunk 警告，主要来自 Milkdown、CodeMirror、KaTeX 和 Shiki；本轮样式及动效未增加 JavaScript 动画库或运行时依赖。
+
+本轮已完成样式静态检查、自动化测试和生产构建。由于本机内置浏览器运行资源路径缺失，亮色/暗色主题的人工页面巡检需在 PR 验收环境补做。

docs/第一阶段测试验证操作手册.md

@@ -83,11 +83,11 @@ pnpm test
 当前基线：
 
 ```text
-6 test files passed
-14 tests passed
+9 test files passed
+23 tests passed
 ```
 
-通过标准：退出码为 0、失败数为 0。测试覆盖 Provider Store、Workspace、文件树、文件切换、可视化编辑器和智能体中文标签。
+通过标准：退出码为 0、失败数为 0。测试覆盖 Provider Store、主题偏好、Workspace、文件树、文件切换、可视化编辑器、智能体中文标签、轻量动效性能约束、Markdown 对比度 Token、scoped CSS 选择器约束和 Shiki GitHub 双主题输出。
 
 ### 3.3 类型检查与生产构建
 
@@ -274,6 +274,7 @@ Invoke-RestMethod -Uri "$apiBase/providers/mock/models"
 - 选择文本后，顶部工具栏和浮动工具栏都对当前选区生效；
 - 正文不默认加粗，标题默认加粗；
 - 代码块默认展开编辑，不显示额外 Shiki 预览；
+- 主题页可在跟随主题、GitHub Light 和 GitHub Dark 间切换代码块样式，刷新后偏好仍保留；
 - Chat 等只读 Markdown 区域的代码高亮能跟随亮暗主题；
 - 表格、公式和 Markdown HTML 渲染正常，危险 HTML 被 DOMPurify 清理。
 
@@ -373,4 +374,3 @@ Invoke-RestMethod -Method Delete -Uri "$apiBase/notes/$noteId"
 
 - 通过 / 有条件通过 / 不通过
 ```
-

frontend/index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="theme-color" content="#171717" />
-    <title>Notes Agent</title>
+    <title>NotesAgent</title>
   </head>
   <body>
     <div id="app"></div>

frontend/src/components/common/AppShell.vue

@@ -73,7 +73,7 @@ defineExpose({ openCitation })
   flex-direction: column;
   height: 100vh;
   width: 100vw;
-  background: var(--color-background-primary);
+  background: var(--color-background-secondary);
   color: var(--color-text-primary);
 }
 
@@ -89,5 +89,6 @@ defineExpose({ openCitation })
   min-width: 0;
   overflow: hidden;
   background: var(--color-background-primary);
+  isolation: isolate;
 }
 </style>

frontend/src/components/common/CommandPalette.vue

@@ -89,13 +89,17 @@ onBeforeUnmount(() => window.removeEventListener('keydown', handleKeydown))
 </template>
 
 <style scoped>
-.command-backdrop { position: fixed; inset: 0; z-index: var(--z-modal); display: flex; justify-content: center; align-items: flex-start; padding-top: 12vh; background: var(--color-background-overlay); }
-.command-palette { width: min(600px, calc(100vw - 32px)); overflow: hidden; border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); background: var(--color-surface-elevated); box-shadow: var(--shadow-xl); }
-.command-input { width: 100%; padding: var(--space-lg); border: 0; border-bottom: 1px solid var(--color-border-default); outline: 0; background: transparent; font-size: var(--font-size-xl); }
+.command-backdrop { position: fixed; inset: 0; z-index: var(--z-modal); display: flex; justify-content: center; align-items: flex-start; padding-top: 12vh; background: var(--color-background-overlay); animation: command-backdrop-in var(--motion-fast) both; }
+.command-palette { width: min(620px, calc(100vw - 32px)); overflow: hidden; border: 1px solid var(--color-border-default); border-radius: var(--radius-xl); background: var(--color-surface-elevated); box-shadow: var(--shadow-xl); animation: command-palette-in var(--motion-normal) both; }
+.command-input { width: 100%; padding: var(--space-xl); border: 0; border-bottom: 1px solid var(--color-border-default); outline: 0; background: transparent; color: var(--color-text-primary); font-size: var(--font-size-xl); }
 .command-list { max-height: 360px; overflow: auto; padding: var(--space-sm); }
-.command-list button { display: flex; justify-content: space-between; width: 100%; padding: var(--space-md); border-radius: var(--radius-md); text-align: left; }
+.command-list button { display: flex; justify-content: space-between; width: 100%; padding: var(--space-md) var(--space-lg); border-radius: var(--radius-md); text-align: left; transition: color var(--motion-fast), background-color var(--motion-fast), transform var(--motion-fast); }
 .command-list button:hover, .command-list button:focus { outline: 0; background: var(--color-accent-soft); color: var(--color-accent-primary); }
+.command-list button:hover { transform: translateX(2px); }
 .command-list small, .command-list p, footer { color: var(--color-text-tertiary); }
 .command-list p { padding: var(--space-xl); text-align: center; }
 footer { display: flex; gap: var(--space-lg); padding: var(--space-sm) var(--space-lg); border-top: 1px solid var(--color-border-subtle); font-size: var(--font-size-xs); }
+
+@keyframes command-backdrop-in { from { opacity: 0; } to { opacity: 1; } }
+@keyframes command-palette-in { from { opacity: 0; transform: translateY(-8px) scale(.99); } to { opacity: 1; transform: translateY(0) scale(1); } }
 </style>

frontend/src/components/common/MarkdownContent.vue

@@ -17,24 +17,33 @@ watch(() => props.source, async (source) => {
   <div class="markdown-content" v-html="html" />
 </template>
 
-<style scoped>
+<style>
 .markdown-content { white-space: normal; user-select: text; }
-.markdown-content :deep(p), .markdown-content :deep(ul), .markdown-content :deep(ol), .markdown-content :deep(pre), .markdown-content :deep(blockquote) { margin: .65em 0; }
-.markdown-content :deep(h1), .markdown-content :deep(h2), .markdown-content :deep(h3) { margin: 1em 0 .5em; line-height: var(--line-height-tight); }
-.markdown-content :deep(ul) { padding-left: 1.5em; list-style: disc; }
-.markdown-content :deep(ol) { padding-left: 1.5em; list-style: decimal; }
-.markdown-content :deep(.shiki) { overflow: auto; padding: var(--space-md); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); }
-.markdown-content :deep(code) { padding: .1em .3em; border-radius: var(--radius-sm); background: var(--color-background-tertiary); font-family: var(--font-ui-mono); }
-.markdown-content :deep(pre code) { padding: 0; background: transparent; }
-.markdown-content :deep(blockquote) { padding-left: 1em; border-left: 3px solid var(--color-accent-primary); color: var(--color-text-secondary); }
-.markdown-content :deep(table) { width: 100%; margin: .65em 0; border-collapse: collapse; }
-.markdown-content :deep(th), .markdown-content :deep(td) { padding: .45em .65em; border: 1px solid var(--color-border-default); text-align: left; }
-.markdown-content :deep(img) { max-width: 100%; }
-.markdown-content :deep(hr) { margin: 1em 0; border: 0; border-top: 1px solid var(--color-border-default); }
-:global([data-theme='dark']) .markdown-content :deep(.shiki),
-:global([data-theme='dark']) .markdown-content :deep(.shiki span) {
+.markdown-content p, .markdown-content ul, .markdown-content ol, .markdown-content pre, .markdown-content blockquote { margin: .65em 0; }
+.markdown-content h1, .markdown-content h2, .markdown-content h3 { margin: 1em 0 .5em; line-height: var(--line-height-tight); }
+.markdown-content ul { padding-left: 1.5em; list-style: disc; }
+.markdown-content ol { padding-left: 1.5em; list-style: decimal; }
+.markdown-content li::marker { color: var(--color-markdown-marker); font-weight: 700; }
+.markdown-content .shiki { overflow: auto; margin: .85em 0; padding: 16px; border: 1px solid var(--color-code-border); border-radius: 6px; background: var(--color-code-background) !important; color: var(--color-code-text); font-family: var(--font-ui-mono); font-size: .875em; line-height: 1.45; tab-size: 4; }
+.markdown-content code { padding: .1em .3em; border-radius: var(--radius-sm); background: var(--color-background-tertiary); font-family: var(--font-ui-mono); }
+.markdown-content .shiki code { display: block; min-width: max-content; padding: 0; background: transparent; font: inherit; }
+.markdown-content .shiki .line { display: block; min-height: 1.45em; }
+.markdown-content blockquote { padding-left: 1em; border-left: 3px solid var(--color-accent-primary); color: var(--color-text-secondary); }
+.markdown-content table { width: 100%; margin: .65em 0; border-collapse: collapse; }
+.markdown-content th, .markdown-content td { padding: .45em .65em; border: 1px solid var(--color-markdown-grid); text-align: left; }
+.markdown-content th { background: var(--color-markdown-table-header); font-weight: 700; }
+.markdown-content img { max-width: 100%; }
+.markdown-content hr { margin: 1em 0; border: 0; border-top: 1px solid var(--color-border-default); }
+[data-code-theme='github-light'] .markdown-content .shiki,
+[data-code-theme='github-light'] .markdown-content .shiki span {
+  color: var(--shiki-light) !important;
+  font-style: var(--shiki-light-font-style) !important;
+  font-weight: var(--shiki-light-font-weight) !important;
+  text-decoration: var(--shiki-light-text-decoration) !important;
+}
+[data-code-theme='github-dark'] .markdown-content .shiki,
+[data-code-theme='github-dark'] .markdown-content .shiki span {
   color: var(--shiki-dark) !important;
-  background-color: var(--shiki-dark-bg) !important;
   font-style: var(--shiki-dark-font-style) !important;
   font-weight: var(--shiki-dark-font-weight) !important;
   text-decoration: var(--shiki-dark-text-decoration) !important;

frontend/src/components/common/PrimarySidebar.vue

@@ -60,13 +60,14 @@ function toggleExpanded() {
 
 <style scoped>
 .primary-sidebar {
-  width: 56px;
+  width: var(--sidebar-primary-width);
   background: var(--color-background-secondary);
   border-right: 1px solid var(--color-border-subtle);
   display: flex;
   flex-direction: column;
   flex-shrink: 0;
   z-index: var(--z-sidebar);
+  transition: width var(--motion-normal), background-color var(--motion-normal);
 }
 
 .primary-sidebar.expanded { width: var(--sidebar-primary-width-expanded); }
@@ -76,7 +77,7 @@ function toggleExpanded() {
 
 .nav-list {
   flex: 1;
-  padding: var(--space-sm) 0;
+  padding: var(--space-md) 0;
   display: flex;
   flex-direction: column;
   gap: 2px;
@@ -87,31 +88,34 @@ function toggleExpanded() {
   flex-direction: column;
   align-items: center;
   justify-content: center;
-  height: 50px;
-  margin: 0 4px;
+  height: 48px;
+  margin: 0 6px;
   border-radius: var(--radius-md);
   cursor: pointer;
   color: var(--color-text-secondary);
-  transition: all var(--motion-fast);
+  border: 1px solid transparent;
+  transition: color var(--motion-fast), background-color var(--motion-fast), border-color var(--motion-fast), transform var(--motion-fast);
   position: relative;
 
   &:hover {
     background: var(--color-background-hover);
     color: var(--color-text-primary);
+    transform: translateX(2px);
   }
 
   &.active {
     background: var(--color-accent-soft);
     color: var(--color-accent-primary);
+    border-color: color-mix(in srgb, var(--color-accent-primary) 16%, transparent);
 
     &::before {
       content: '';
       position: absolute;
-      left: -4px;
+      left: -7px;
       top: 50%;
       transform: translateY(-50%);
-      width: 3px;
-      height: 24px;
+      width: 4px;
+      height: 22px;
       border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
       background: var(--color-accent-primary);
     }
@@ -127,6 +131,7 @@ function toggleExpanded() {
 .nav-label {
   font-size: 10px;
   line-height: 1.2;
+  font-weight: 550;
 }
 
 .sidebar-footer {
@@ -134,5 +139,5 @@ function toggleExpanded() {
   border-top: 1px solid var(--color-border-subtle);
 }
 
-.collapse-button { width: calc(100% - 8px); }
+.collapse-button { width: calc(100% - 12px); }
 </style>

frontend/src/components/common/SecondarySidebar.vue

@@ -53,7 +53,7 @@ const showSkillToggle = computed(() => routeName.value === 'skills' || routeName
 <style scoped>
 .secondary-sidebar {
   width: var(--sidebar-secondary-width);
-  background: var(--color-background-primary);
+  background: var(--color-surface-secondary);
   border-right: 1px solid var(--color-border-default);
   display: flex;
   flex-direction: column;
@@ -62,36 +62,36 @@ const showSkillToggle = computed(() => routeName.value === 'skills' || routeName
 }
 
 .sidebar-header {
-  padding: var(--space-md) var(--space-lg);
+  padding: var(--space-lg);
   border-bottom: 1px solid var(--color-border-subtle);
   flex-shrink: 0;
 }
 
 .sidebar-title {
-  font-size: var(--font-size-sm);
-  font-weight: 600;
+  font-size: var(--font-size-lg);
+  font-weight: 700;
   color: var(--color-text-primary);
-  margin: 0 0 var(--space-sm) 0;
+  margin: 0 0 var(--space-md) 0;
 }
 
 .sidebar-tabs {
   display: flex;
   gap: 2px;
   background: var(--color-background-secondary);
-  padding: 2px;
+  padding: 3px;
   border-radius: var(--radius-md);
 }
 
 .tab {
   flex: 1;
   text-align: center;
-  padding: 4px 8px;
+  padding: 6px 8px;
   font-size: var(--font-size-xs);
   color: var(--color-text-secondary);
   border-radius: var(--radius-sm);
   cursor: pointer;
   text-decoration: none;
-  transition: all var(--motion-fast);
+  transition: color var(--motion-fast), background-color var(--motion-fast), box-shadow var(--motion-fast);
 
   &.active {
     background: var(--color-surface-primary);
@@ -108,6 +108,7 @@ const showSkillToggle = computed(() => routeName.value === 'skills' || routeName
   flex: 1;
   overflow-y: auto;
   overflow-x: hidden;
+  scrollbar-gutter: stable;
 }
 
 </style>

frontend/src/components/common/StatusBar.vue

@@ -107,8 +107,8 @@ const showEditorInfo = computed(() => route.name === 'workspace')
   display: flex;
   align-items: center;
   justify-content: space-between;
-  padding: 0 var(--space-md);
-  background: var(--color-background-secondary);
+  padding: 0 var(--space-lg);
+  background: var(--color-surface-secondary);
   border-top: 1px solid var(--color-border-subtle);
   font-size: var(--font-size-xs);
   color: var(--color-text-secondary);
@@ -129,6 +129,7 @@ const showEditorInfo = computed(() => route.name === 'workspace')
   gap: 6px;
   white-space: nowrap;
   cursor: default;
+  transition: color var(--motion-fast);
 
   &:hover {
     color: var(--color-text-primary);
@@ -140,6 +141,7 @@ const showEditorInfo = computed(() => route.name === 'workspace')
   height: 6px;
   border-radius: 50%;
   flex-shrink: 0;
+  box-shadow: 0 0 0 2px var(--color-surface-secondary);
 }
 
 .agent-status {
@@ -162,4 +164,9 @@ const showEditorInfo = computed(() => route.name === 'workspace')
 .provider-info {
   color: var(--color-text-tertiary);
 }
+
+@media (max-width: 760px) {
+  .statusbar-left, .statusbar-right { gap: var(--space-sm); }
+  .provider-info { display: none; }
+}
 </style>

frontend/src/components/common/TitleBar.vue

@@ -25,7 +25,7 @@ const pageTitle = computed(() => {
     themes: '主题管理',
     settings: '设置',
   }
-  return titles[name] || '知笔知己'
+  return titles[name] || 'NotesAgent'
 })
 
 const currentFileName = computed(() => {
@@ -50,7 +50,7 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
       </span>
     </div>
     <div class="titlebar-center">
-      <span class="app-name">知笔知己</span>
+      <span class="app-name">NotesAgent</span>
     </div>
     <div class="titlebar-right">
       <button class="icon-btn" @click="themeStore.toggleTheme()" :title="themeStore.isDark ? '切换浅色主题' : '切换深色主题'">
@@ -71,8 +71,8 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
   display: flex;
   align-items: center;
   justify-content: space-between;
-  padding: 0 var(--space-md);
-  background: var(--color-background-secondary);
+  padding: 0 var(--space-lg);
+  background: var(--color-surface-secondary);
   border-bottom: 1px solid var(--color-border-subtle);
   font-size: var(--font-size-sm);
   flex-shrink: 0;
@@ -129,7 +129,13 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
 }
 
 .app-name {
-  font-weight: 500;
+  padding: 3px 10px;
+  border: 1px solid var(--color-border-subtle);
+  border-radius: var(--radius-full);
+  background: var(--color-surface-primary);
+  color: var(--color-text-secondary);
+  font-weight: 650;
+  letter-spacing: .04em;
 }
 
 .titlebar-right {
@@ -141,8 +147,8 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
 }
 
 .icon-btn {
-  width: 28px;
-  height: 28px;
+  width: 30px;
+  height: 30px;
   display: flex;
   align-items: center;
   justify-content: center;
@@ -150,11 +156,12 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
   color: var(--color-text-secondary);
   font-size: 14px;
   -webkit-app-region: no-drag;
-  transition: background var(--motion-fast);
+  transition: background-color var(--motion-fast), color var(--motion-fast), transform var(--motion-fast);
 
   &:hover {
     background: var(--color-background-hover);
     color: var(--color-text-primary);
+    transform: rotate(8deg);
   }
 }
 
@@ -179,7 +186,7 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
   color: var(--color-text-secondary);
   border-radius: var(--radius-sm);
   cursor: pointer;
-  transition: background var(--motion-fast);
+  transition: background-color var(--motion-fast), color var(--motion-fast);
 
   &:hover {
     background: var(--color-background-hover);
@@ -190,4 +197,10 @@ const isDirty = computed(() => editorStore.saveStatus === 'dirty' || editorStore
     color: white;
   }
 }
+
+@media (max-width: 760px) {
+  .titlebar-left, .titlebar-right { min-width: 0; }
+  .titlebar-center, .window-controls { display: none; }
+  .file-name { max-width: 42vw; }
+}
 </style>

frontend/src/contracts/index.ts

@@ -329,6 +329,7 @@ export interface ThemeConfig {
   is_dark: boolean
   author?: string
   builtin: boolean
+  code_theme?: 'github-light' | 'github-dark'
 }
 
 // ============ Index ============

frontend/src/features/agent/AgentView.vue

@@ -108,16 +108,22 @@ function eventText(event: AgentEvent) {
 </template>
 
 <style scoped>
-.run-form { display: grid; gap: var(--space-xl); max-width: 980px; }
+.agent-page > * { width: min(100%, 1080px); margin-inline: auto; }
+.run-form { display: grid; gap: var(--space-xl); }
 .tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: var(--space-sm); }
-.tool-option { display: flex; gap: var(--space-sm); padding: var(--space-sm); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); }
+.tool-option { display: flex; gap: var(--space-sm); padding: var(--space-md); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-surface-primary); cursor: pointer; transition: border-color var(--motion-fast), background-color var(--motion-fast), transform var(--motion-fast), box-shadow var(--motion-fast); }
+.tool-option:hover { border-color: var(--color-accent-secondary); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
+.tool-option:has(input:checked) { border-color: var(--color-accent-primary); background: var(--color-accent-soft); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent-primary) 10%, transparent); }
 .tool-option small { display: block; color: var(--color-text-secondary); }
 .tool-option code { display: block; margin: 2px 0; color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
 .network { display: flex; gap: var(--space-sm); }
 .trace-layout { display: grid; gap: var(--space-lg); }
 .run-summary, .event-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
 .run-summary h2 { margin-top: var(--space-sm); font-family: var(--font-ui-mono); font-size: var(--font-size-lg); }
-.timeline { display: grid; gap: var(--space-md); }
+.timeline { position: relative; display: grid; gap: var(--space-md); padding-left: var(--space-md); }
+.timeline::before { content: ''; position: absolute; top: 10px; bottom: 10px; left: 1px; width: 2px; border-radius: var(--radius-full); background: var(--color-border-default); }
+.event-card { position: relative; }
+.event-card::before { content: ''; position: absolute; top: 20px; left: calc(-1 * var(--space-md) - 5px); width: 8px; height: 8px; border: 2px solid var(--color-surface-primary); border-radius: var(--radius-full); background: var(--color-accent-primary); box-shadow: 0 0 0 1px var(--color-accent-secondary); }
 .event-head { color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
 .event-text { margin-top: var(--space-md); white-space: pre-wrap; line-height: var(--line-height-relaxed); }
 pre { margin-top: var(--space-md); max-height: 260px; overflow: auto; padding: var(--space-md); border-radius: var(--radius-md); background: var(--color-background-secondary); font-family: var(--font-ui-mono); font-size: var(--font-size-xs); white-space: pre-wrap; user-select: text; }

frontend/src/features/chat/ChatView.vue

@@ -94,24 +94,29 @@ async function openCitation(citation: Citation) {
 </template>
 
 <style scoped>
-.chat-page { display: grid; grid-template-rows: auto auto 1fr auto; height: 100%; min-height: 0; background: var(--color-background-primary); }
-.chat-toolbar { display: flex; align-items: end; flex-wrap: wrap; gap: var(--space-md); padding: var(--space-md) var(--space-xl); border-bottom: 1px solid var(--color-border-default); }
+.chat-page { display: grid; grid-template-rows: auto auto 1fr auto; height: 100%; min-height: 0; background: radial-gradient(circle at 85% -10%, var(--color-accent-soft), transparent 30%), var(--color-background-primary); }
+.chat-toolbar { display: flex; align-items: end; flex-wrap: wrap; gap: var(--space-md); padding: var(--space-md) var(--space-xl); border-bottom: 1px solid var(--color-border-default); background: var(--color-surface-secondary); box-shadow: var(--shadow-sm); z-index: 1; }
 .compact { min-width: 160px; }
 .rag-toggle { display: flex; align-items: center; gap: var(--space-xs); min-height: 36px; color: var(--color-text-secondary); }
 .chat-error { margin: var(--space-md) var(--space-xl) 0; }
 .message-timeline { min-height: 0; overflow: auto; padding: var(--space-xl) max(var(--space-xl), calc((100% - 820px) / 2)); user-select: text; }
-.message { display: grid; grid-template-columns: 36px 1fr; gap: var(--space-md); margin-bottom: var(--space-xl); }
-.avatar { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-full); background: var(--color-background-tertiary); font-weight: 700; }
+.message { display: grid; grid-template-columns: 36px 1fr; gap: var(--space-md); margin-bottom: var(--space-xl); animation: message-in var(--motion-normal) both; }
+.avatar { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--color-border-default); border-radius: var(--radius-full); background: var(--color-background-tertiary); box-shadow: var(--shadow-sm); font-weight: 700; }
 .assistant .avatar { background: var(--color-accent-soft); color: var(--color-accent-primary); }
+.message-body { min-width: 0; padding: var(--space-md) var(--space-lg); border: 1px solid var(--color-border-subtle); border-radius: 4px var(--radius-lg) var(--radius-lg) var(--radius-lg); background: color-mix(in srgb, var(--color-surface-primary) 88%, transparent); box-shadow: var(--shadow-sm); }
+.user .message-body { background: var(--color-accent-soft); border-color: color-mix(in srgb, var(--color-accent-primary) 14%, transparent); }
 .message-content { white-space: pre-wrap; line-height: var(--line-height-relaxed); }
 .thinking { margin-bottom: var(--space-sm); color: var(--color-text-secondary); }.thinking p { margin-top: var(--space-sm); white-space: pre-wrap; }
 .tool-calls { display: grid; gap: var(--space-sm); margin-top: var(--space-md); }.tool-calls .item-card { display: grid; gap: var(--space-xs); }.tool-calls pre { overflow: auto; font-size: var(--font-size-xs); }
 .usage { display: block; margin-top: var(--space-xs); color: var(--color-text-tertiary); }
 .message time { display: block; margin-top: var(--space-sm); color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
 .citations { display: grid; gap: var(--space-sm); margin-top: var(--space-md); }
-.citation-card { display: flex; align-items: flex-start; gap: var(--space-sm); padding: var(--space-sm); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); text-align: left; }
+.citation-card { display: flex; align-items: flex-start; gap: var(--space-sm); padding: var(--space-md); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-surface-primary); text-align: left; transition: border-color var(--motion-fast), transform var(--motion-fast), box-shadow var(--motion-fast); }
+.citation-card:hover { border-color: var(--color-accent-secondary); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
 .citation-card small { display: block; margin-top: 2px; color: var(--color-text-secondary); }
-.composer { padding: var(--space-md) max(var(--space-xl), calc((100% - 820px) / 2)); border-top: 1px solid var(--color-border-default); background: var(--color-surface-primary); }
+.composer { padding: var(--space-md) max(var(--space-xl), calc((100% - 820px) / 2)); border-top: 1px solid var(--color-border-default); background: var(--color-surface-secondary); box-shadow: 0 -8px 24px color-mix(in srgb, var(--color-text-primary) 5%, transparent); }
 .composer .textarea { min-height: 72px; }
 .composer-actions { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); margin-top: var(--space-sm); }
+
+@keyframes message-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
 </style>

frontend/src/features/editor/EditorPane.spec.ts

@@ -30,9 +30,9 @@ afterEach(() => {
 describe('EditorPane file switching', () => {
   it('recreates the visual editor with the newly loaded file content', async () => {
     const store = useEditorStore()
-    await store.loadFile('/欢迎使用知笔知己.md')
+    await store.loadFile('/欢迎使用 NotesAgent.md')
     wrapper = mount(EditorPane, { attachTo: document.body })
-    await waitForText('欢迎使用知笔知己')
+    await waitForText('欢迎使用 NotesAgent')
 
     await store.loadFile('/数据结构/红黑树.md')
     await nextTick()

frontend/src/features/editor/EditorPane.vue

@@ -1,10 +1,12 @@
 <script setup lang="ts">
 import { useEditorStore } from '@/stores/editor'
 import { useSettingsStore } from '@/stores/settings'
+import { useThemeStore } from '@/stores/theme'
 import VisualMarkdownEditor from './VisualMarkdownEditor.vue'
 
 const editorStore = useEditorStore()
 const settingsStore = useSettingsStore()
+const themeStore = useThemeStore()
 function updateContent(event: Event) {
   editorStore.updateContent((event.target as HTMLTextAreaElement).value)
   editorStore.scheduleAutoSave(settingsStore.autoSaveInterval)
@@ -12,7 +14,7 @@ function updateContent(event: Event) {
 </script>
 
 <template>
-  <VisualMarkdownEditor v-if="editorStore.mode === 'wysiwyg'" :key="editorStore.currentFilePath ?? 'empty'"
+  <VisualMarkdownEditor v-if="editorStore.mode === 'wysiwyg'" :key="`${editorStore.currentFilePath ?? 'empty'}:${themeStore.resolvedCodeBlockTheme}`"
     :initial-content="editorStore.content" />
   <textarea v-else class="editor-pane source" :value="editorStore.content" :spellcheck="false"
     aria-label="Markdown 源码编辑器" @input="updateContent" />

frontend/src/features/editor/VisualMarkdownEditor.vue

@@ -2,6 +2,7 @@
 import { onBeforeUnmount, onMounted, ref } from 'vue'
 import { Link } from '@element-plus/icons-vue'
 import { Crepe } from '@milkdown/crepe'
+import { oneDark } from '@codemirror/theme-one-dark'
 import {
   createCodeBlockCommand,
   toggleEmphasisCommand,
@@ -19,6 +20,7 @@ import { callCommand } from '@milkdown/kit/utils'
 import AppIcon from '@/components/common/AppIcon.vue'
 import { useEditorStore } from '@/stores/editor'
 import { useSettingsStore } from '@/stores/settings'
+import { useThemeStore } from '@/stores/theme'
 import { applyMarkdownFontSize, fontSizeMarkdownPlugin } from './fontSizeMarkdown'
 import '@milkdown/crepe/theme/common/style.css'
 import '@milkdown/crepe/theme/frame.css'
@@ -26,6 +28,7 @@ import '@milkdown/crepe/theme/frame.css'
 const props = defineProps<{ initialContent: string }>()
 const editorStore = useEditorStore()
 const settingsStore = useSettingsStore()
+const themeStore = useThemeStore()
 const editorRoot = ref<HTMLElement | null>(null)
 const loading = ref(true)
 const fontSizeInput = ref(16)
@@ -104,6 +107,7 @@ onMounted(async () => {
     featureConfigs: {
       [Crepe.Feature.Placeholder]: { text: '开始记录你的想法…' },
       [Crepe.Feature.CodeMirror]: {
+        theme: themeStore.resolvedCodeBlockTheme === 'github-dark' ? oneDark : [],
         previewOnlyByDefault: false,
         searchPlaceholder: '搜索语言',
         noResultText: '没有匹配的语言',
@@ -250,7 +254,7 @@ defineExpose({ getEditor: () => crepe?.editor })
   --crepe-color-surface-low: var(--color-background-secondary);
   --crepe-color-on-surface: var(--color-text-primary);
   --crepe-color-on-surface-variant: var(--color-text-secondary);
-  --crepe-color-outline: var(--color-border-default);
+  --crepe-color-outline: var(--color-markdown-grid);
   --crepe-color-primary: var(--color-accent-primary);
   --crepe-color-secondary: var(--color-accent-soft);
   --crepe-color-on-secondary: var(--color-text-primary);
@@ -269,14 +273,21 @@ defineExpose({ getEditor: () => crepe?.editor })
 .milkdown-host :deep(.ProseMirror p) { font-weight: 400; }
 .milkdown-host :deep(.ProseMirror h1), .milkdown-host :deep(.ProseMirror h2), .milkdown-host :deep(.ProseMirror h3), .milkdown-host :deep(.ProseMirror h4), .milkdown-host :deep(.ProseMirror h5), .milkdown-host :deep(.ProseMirror h6) { font-weight: 700; }
 .milkdown-host :deep(.font-size-marker) { display: none; }
+.milkdown-host :deep(.milkdown-code-block) { overflow: hidden; border: 1px solid var(--color-code-border); border-radius: 6px; background: var(--color-code-background); color: var(--color-code-text); }
+.milkdown-host :deep(.milkdown-code-block .cm-editor),
+.milkdown-host :deep(.milkdown-code-block .cm-gutters),
+.milkdown-host :deep(.milkdown-code-block .cm-panel) { background: var(--color-code-background); }
+.milkdown-host :deep(.milkdown-code-block .cm-content) { caret-color: var(--color-code-text); font-family: var(--font-editor-mono); }
+.milkdown-host :deep(.milkdown-code-block .language-button) { color: var(--color-code-muted); }
 :global(.milkdown-toolbar) { border: 1px solid var(--color-border-default) !important; background: var(--color-surface-elevated) !important; box-shadow: var(--shadow-md) !important; }
 :global(.milkdown-toolbar .toolbar-item svg), :global(.milkdown-toolbar .toolbar-item.active svg) { color: var(--color-text-primary) !important; fill: var(--color-text-primary) !important; opacity: 1 !important; }
 :global(.milkdown-toolbar .toolbar-item:hover svg), :global(.milkdown-toolbar .toolbar-item.active svg) { color: var(--color-accent-primary) !important; fill: var(--color-accent-primary) !important; }
-:global([data-theme='light']) .milkdown-host :deep(.milkdown-table-block th),
-:global([data-theme='light']) .milkdown-host :deep(.milkdown-table-block td) { border-color: var(--color-text-tertiary); }
-:global([data-theme='light']) .milkdown-host :deep(.milkdown-list-item-block li .label-wrapper) { color: var(--color-text-secondary); font-weight: 600; }
-:global([data-theme='light']) .milkdown-host :deep(.milkdown-list-item-block li .label-wrapper svg) { fill: var(--color-text-secondary); }
+.milkdown-host :deep(.milkdown-table-block th),
+.milkdown-host :deep(.milkdown-table-block td) { border-color: var(--color-markdown-grid); }
+.milkdown-host :deep(.milkdown-table-block th) { background: var(--color-markdown-table-header); font-weight: 700; }
+.milkdown-host :deep(.milkdown-list-item-block li .label-wrapper) { color: var(--color-markdown-marker); font-weight: 700; }
+.milkdown-host :deep(.milkdown-list-item-block li .label-wrapper svg) { fill: var(--color-markdown-marker); }
 .milkdown-host :deep(code) { font-family: var(--font-editor-mono); }
-:global([data-theme='dark']) .milkdown-host :deep(.milkdown) { color-scheme: dark; }
+:global([data-theme='dark'] .milkdown-host .milkdown) { color-scheme: dark; }
 @media (max-width: 680px) { .toolbar-select select { min-width: 46px; width: 46px; } }
 </style>

frontend/src/features/search/SearchView.vue

@@ -66,13 +66,16 @@ async function openResult(result: SearchResult) {
 </template>
 
 <style scoped>
+.search-page > * { width: min(100%, 1040px); margin-inline: auto; }
 .search-form { display: grid; grid-template-columns: 1fr auto; gap: var(--space-md); margin-bottom: var(--space-lg); }
 .search-input { height: 44px; font-size: var(--font-size-lg); }
 .advanced { grid-column: 1 / -1; }
 .results-header, .result-title, .result-meta { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
 .results-header { margin: var(--space-xl) 0 var(--space-md); color: var(--color-text-secondary); }
 .result-list { display: grid; gap: var(--space-md); }
-.result-card { cursor: pointer; }
+.result-card { position: relative; cursor: pointer; overflow: hidden; }
+.result-card::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--color-accent-primary); opacity: 0; transform: scaleY(.45); transition: opacity var(--motion-fast), transform var(--motion-fast); }
+.result-card:hover::before { opacity: 1; transform: scaleY(1); }
 .snippet { margin: var(--space-md) 0; line-height: var(--line-height-relaxed); }
 .result-meta { color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
 @media (max-width: 700px) { .search-form { grid-template-columns: 1fr; } .advanced { grid-column: auto; } }

frontend/src/features/settings/SettingsView.vue

@@ -181,11 +181,12 @@ async function chooseDefaultModel(provider: ProviderConfig, event: Event) {
 .settings-page { max-width: 1120px; margin: 0 auto; }
 .settings-section { display: grid; gap: var(--space-md); }
 .settings-section h2 { margin-bottom: var(--space-sm); }
-.setting-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); min-height: 54px; padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-border-subtle); }
+.setting-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); min-height: 58px; padding: var(--space-sm) var(--space-md); border-bottom: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); transition: background-color var(--motion-fast); }
+.setting-row:hover { background: var(--color-background-secondary); }
 .setting-row small { display: block; color: var(--color-text-tertiary); }.short { width: min(220px, 45%); }
 .section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
 .provider-list { display: grid; gap: var(--space-md); }.provider-card { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); }.provider-main { min-width: 0; flex: 1; }.provider-card p, .provider-card .tag-list { margin-top: var(--space-sm); }
-.model-picker { display: flex; align-items: center; gap: var(--space-sm); margin-top: var(--space-md); }.model-picker label { white-space: nowrap; font-weight: 600; }.model-picker .select { width: min(360px, 100%); }.provider-actions { flex-wrap: wrap; justify-content: flex-end; }.error-text { color: var(--color-danger, #d33); }
+.model-picker { display: flex; align-items: center; gap: var(--space-sm); margin-top: var(--space-md); }.model-picker label { white-space: nowrap; font-weight: 600; }.model-picker .select { width: min(360px, 100%); }.provider-actions { flex-wrap: wrap; justify-content: flex-end; }.error-text { color: var(--color-error); }
 .test-result { color: var(--color-info); }.index-summary, .diagnostic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }.index-summary > div { padding: var(--space-lg); border-radius: var(--radius-md); background: var(--color-background-secondary); }.index-summary strong, .index-summary small { display: block; }.index-summary strong { font-size: var(--font-size-3xl); }
 .section-description { margin-top: calc(-1 * var(--space-md)); }.diagnostic-grid { grid-template-columns: repeat(2, 1fr); }.diagnostic-grid h3 { margin: var(--space-md) 0 var(--space-xs); }.diagnostic-actions { margin-top: var(--space-md); }
 @media (max-width: 700px) { .provider-card, .setting-row, .model-picker { align-items: flex-start; flex-direction: column; }.short, .model-picker .select { width: 100%; }.index-summary, .diagnostic-grid { grid-template-columns: 1fr; }.provider-actions { justify-content: flex-start; } }

frontend/src/features/tasks/TasksView.vue

@@ -50,10 +50,11 @@ async function remove(task: TaskItem) {
 </template>
 
 <style scoped>
-.task-list { display: grid; gap: var(--space-md); }
+.task-list { display: grid; gap: var(--space-md); width: min(100%, 980px); margin-inline: auto; }
 .task-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-md); }
-.status-check { width: 26px; height: 26px; border: 2px solid var(--color-border-default); border-radius: var(--radius-full); }
-.status-check.done { border-color: var(--color-success); background: var(--color-success); color: white; }
+.status-check { width: 28px; height: 28px; border: 2px solid var(--color-border-default); border-radius: var(--radius-full); transition: border-color var(--motion-fast), background-color var(--motion-fast), color var(--motion-fast), transform var(--motion-fast); }
+.status-check:hover { border-color: var(--color-success); transform: scale(1.06); }
+.status-check.done { border-color: var(--color-success); background: var(--color-success); color: white; box-shadow: 0 3px 10px color-mix(in srgb, var(--color-success) 24%, transparent); }
 .task-title { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-sm); }
 .task-content p { margin: var(--space-xs) 0; }
 .task-content .subtle { display: flex; flex-wrap: wrap; gap: var(--space-md); }

frontend/src/features/themes/ThemesView.vue

@@ -1,6 +1,15 @@
 <script setup lang="ts">
+import { computed } from 'vue'
+import MarkdownContent from '@/components/common/MarkdownContent.vue'
 import { useThemeStore } from '@/stores/theme'
+
 const themeStore = useThemeStore()
+const shikiPreview = `\`\`\`typescript
+const notes = await search('本地优先')
+\`\`\``
+const codeThemeLabel = computed(() => themeStore.resolvedCodeBlockTheme === 'github-dark'
+  ? 'Shiki · GitHub Dark'
+  : 'Shiki · GitHub Light')
 </script>
 
 <template>
@@ -13,7 +22,20 @@ const themeStore = useThemeStore()
         <p class="subtle">v{{ theme.version }} · {{ theme.builtin ? '内置主题' : theme.author }}</p>
       </button>
     </div>
-    <div class="panel preference-panel"><h2 class="panel-title">编辑器外观</h2><div class="form-grid"><div class="field"><label>字号：{{ themeStore.fontEditorSize }}px</label><input v-model.number="themeStore.fontEditorSize" type="range" min="12" max="24" /></div><div class="field"><label>行高：{{ themeStore.lineHeight }}</label><input v-model.number="themeStore.lineHeight" type="range" min="1.2" max="2.2" step="0.1" /></div><div class="field"><label>字体</label><select v-model="themeStore.fontEditorFamily" class="select"><option value="system-ui">系统字体</option><option value="serif">衬线字体</option><option value="var(--font-ui-mono)">等宽字体</option></select></div></div><div class="editor-preview" :style="{ fontSize: `${themeStore.fontEditorSize}px`, lineHeight: themeStore.lineHeight, fontFamily: themeStore.fontEditorFamily }"><h3>主题预览</h3><p>知识的价值不只在于保存，更在于被重新发现和使用。</p><code>const notes = await search('本地优先')</code></div></div>
+    <div class="panel preference-panel">
+      <h2 class="panel-title">编辑器外观</h2>
+      <div class="form-grid">
+        <div class="field"><label>字号：{{ themeStore.fontEditorSize }}px</label><input v-model.number="themeStore.fontEditorSize" type="range" min="12" max="24" /></div>
+        <div class="field"><label>行高：{{ themeStore.lineHeight }}</label><input v-model.number="themeStore.lineHeight" type="range" min="1.2" max="2.2" step="0.1" /></div>
+        <div class="field"><label>字体</label><select v-model="themeStore.fontEditorFamily" class="select"><option value="system-ui">系统字体</option><option value="serif">衬线字体</option><option value="var(--font-ui-mono)">等宽字体</option></select></div>
+        <div class="field"><label>代码块样式</label><select v-model="themeStore.codeBlockTheme" class="select"><option value="auto">跟随主题</option><option value="github-light">GitHub Light</option><option value="github-dark">GitHub Dark</option></select><small>Markdown 渲染使用对应的 Shiki GitHub 主题</small></div>
+      </div>
+      <div class="editor-preview" :style="{ fontSize: `${themeStore.fontEditorSize}px`, lineHeight: themeStore.lineHeight, fontFamily: themeStore.fontEditorFamily }">
+        <div class="preview-heading"><h3>主题预览</h3><span class="badge info">{{ codeThemeLabel }}</span></div>
+        <p>知识的价值不只在于保存，更在于被重新发现和使用。</p>
+        <MarkdownContent class="code-theme-preview" :source="shikiPreview" />
+      </div>
+    </div>
   </section>
 </template>
 
@@ -28,5 +50,8 @@ const themeStore = useThemeStore()
 .theme-info { display: flex; justify-content: space-between; gap: var(--space-md); }
 .preference-panel { display: grid; gap: var(--space-xl); }
 .editor-preview { padding: var(--space-xl); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-background-secondary); }
-.editor-preview p { margin: var(--space-sm) 0; }.editor-preview code { color: var(--color-accent-primary); }
+.editor-preview p { margin: var(--space-sm) 0; }
+.preview-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
+.field small { color: var(--color-text-tertiary); }
+.code-theme-preview { margin-top: var(--space-md); }
 </style>

frontend/src/features/vault/VaultEntry.vue

@@ -68,7 +68,7 @@ async function createVault() {
     <div class="entry-container">
       <div class="brand-section">
         <div class="logo"><AppIcon :icon="Document" :size="56" /></div>
-        <h1 class="app-title">知笔知己</h1>
+        <h1 class="app-title">NotesAgent</h1>
         <p class="app-subtitle">本地优先的 AI 笔记软件</p>
       </div>
 
@@ -161,7 +161,7 @@ async function createVault() {
   background:
     radial-gradient(circle at 20% 30%, var(--color-accent-soft) 0%, transparent 50%),
     radial-gradient(circle at 80% 70%, var(--color-info-soft) 0%, transparent 50%);
-  opacity: 0.5;
+  opacity: 0.62;
 }
 
 .entry-container {
@@ -173,6 +173,7 @@ async function createVault() {
   gap: 32px;
   max-width: 480px;
   width: 90%;
+  animation: entry-in var(--motion-slow) both;
 }
 
 .brand-section {
@@ -180,8 +181,16 @@ async function createVault() {
 }
 
 .logo {
-  font-size: 64px;
-  margin-bottom: 12px;
+  display: inline-grid;
+  place-items: center;
+  width: 84px;
+  height: 84px;
+  margin-bottom: 14px;
+  border: 1px solid color-mix(in srgb, var(--color-accent-primary) 18%, transparent);
+  border-radius: 24px;
+  background: var(--color-surface-primary);
+  color: var(--color-accent-primary);
+  box-shadow: var(--shadow-lg);
 }
 
 .app-title {
@@ -206,7 +215,7 @@ async function createVault() {
   border: 1px solid var(--color-border-default);
   border-radius: var(--radius-xl);
   padding: var(--space-2xl);
-  box-shadow: var(--shadow-lg);
+  box-shadow: var(--shadow-xl);
 }
 
 .card-title {
@@ -247,11 +256,13 @@ async function createVault() {
   border-radius: var(--radius-md);
   cursor: pointer;
   text-align: left;
-  transition: all var(--motion-fast);
+  transition: background-color var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast), transform var(--motion-fast);
 
   &:hover {
     background: var(--color-accent-soft);
     border-color: var(--color-accent-secondary);
+    box-shadow: var(--shadow-sm);
+    transform: translateY(-1px);
   }
 
   &:disabled {
@@ -288,8 +299,11 @@ async function createVault() {
 .vault-arrow {
   color: var(--color-text-tertiary);
   font-size: 20px;
+  transition: color var(--motion-fast), transform var(--motion-fast);
 }
 
+.vault-item:hover .vault-arrow { color: var(--color-accent-primary); transform: translateX(3px); }
+
 .actions {
   display: flex;
   flex-direction: column;
@@ -307,7 +321,7 @@ async function createVault() {
   font-size: 14px;
   font-weight: 500;
   cursor: pointer;
-  transition: all var(--motion-fast);
+  transition: background-color var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast), transform var(--motion-fast);
   border: 1px solid transparent;
 
   &:disabled {
@@ -321,6 +335,8 @@ async function createVault() {
 
     &:hover:not(:disabled) {
       background: var(--color-accent-primary-hover);
+      transform: translateY(-1px);
+      box-shadow: 0 7px 18px color-mix(in srgb, var(--color-accent-primary) 25%, transparent);
     }
   }
 
@@ -400,6 +416,7 @@ async function createVault() {
   align-items: center;
   justify-content: center;
   z-index: var(--z-modal);
+  animation: dialog-backdrop-in var(--motion-fast) both;
 }
 
 .dialog {
@@ -409,8 +426,13 @@ async function createVault() {
   width: 90%;
   max-width: 400px;
   box-shadow: var(--shadow-xl);
+  animation: dialog-in var(--motion-normal) both;
 }
 
+@keyframes entry-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
+@keyframes dialog-backdrop-in { from { opacity: 0; } to { opacity: 1; } }
+@keyframes dialog-in { from { opacity: 0; transform: translateY(8px) scale(.985); } to { opacity: 1; transform: translateY(0) scale(1); } }
+
 .dialog h3 {
   margin: 0 0 var(--space-lg) 0;
   font-size: 18px;

frontend/src/features/workspace/FileTreePanel.vue

@@ -133,5 +133,5 @@ button:hover { background: var(--color-background-secondary); }
 .tree { padding: var(--space-xs); }
 .context-menu { position: fixed; z-index: 1000; display: grid; min-width: 130px; padding: var(--space-xs); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-background-primary); box-shadow: var(--shadow-md); }
 .context-menu button { text-align: left; }
-.context-menu .danger { color: var(--color-danger, #d33); }
+.context-menu .danger { color: var(--color-error); }
 </style>

frontend/src/features/workspace/WorkspaceView.vue

@@ -15,10 +15,10 @@ onMounted(() => {
     // Already loaded
   }
   if (!workspaceStore.activeFilePath && workspaceStore.fileTree.length === 0) {
-    void editorStore.loadFile('/欢迎使用知笔知己.md').then(() => {
+    void editorStore.loadFile('/欢迎使用 NotesAgent.md').then(() => {
       // 默认文件加载期间用户可能已经点击了其他文件，不能覆盖用户的选择。
-      if (!workspaceStore.activeFilePath && editorStore.currentFilePath === '/欢迎使用知笔知己.md') {
-        workspaceStore.openFile('/欢迎使用知笔知己.md')
+      if (!workspaceStore.activeFilePath && editorStore.currentFilePath === '/欢迎使用 NotesAgent.md') {
+        workspaceStore.openFile('/欢迎使用 NotesAgent.md')
       }
     })
   }
@@ -59,6 +59,11 @@ onMounted(() => {
 
 .empty-content {
   text-align: center;
+  padding: var(--space-3xl);
+  border: 1px dashed var(--color-border-default);
+  border-radius: var(--radius-xl);
+  background: var(--color-background-secondary);
+  animation: workspace-empty-in var(--motion-normal) both;
 
   h2 {
     font-size: 18px;
@@ -75,4 +80,6 @@ onMounted(() => {
   font-size: 48px;
   opacity: 0.5;
 }
+
+@keyframes workspace-empty-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
 </style>

frontend/src/router/index.ts

@@ -83,7 +83,7 @@ router.beforeEach((to, _from, next) => {
 })
 
 router.afterEach((to) => {
-  const baseTitle = '知笔知己'
+  const baseTitle = 'NotesAgent'
   const title = to.meta.title as string | undefined
   document.title = title ? `${title} · ${baseTitle}` : baseTitle
 })

frontend/src/services/pluginService.ts

@@ -65,7 +65,7 @@ export const mockPlugins: Plugin[] = [
     version: '1.3.2',
     description: '接入 GitHub API，支持搜索 Issue、查看 PR 和管理仓库',
     icon: '',
-    author: '知笔知己团队',
+    author: 'NotesAgent 团队',
     status: 'ready',
     enabled: true,
     permissions: ['notes.read', 'network.request'],
@@ -117,7 +117,7 @@ export const mockPlugins: Plugin[] = [
     version: '2.1.0',
     description: '导入 PDF 文档，提取文本和目录结构生成笔记',
     icon: '',
-    author: '知笔知己团队',
+    author: 'NotesAgent 团队',
     status: 'error',
     enabled: false,
     permissions: ['notes.write', 'attachments.read'],

frontend/src/services/skillService.ts

@@ -50,7 +50,7 @@ export const mockSkills: Skill[] = [
     version: '1.0.0',
     description: '根据课程笔记生成复习要点和练习题，帮助高效备考',
     icon: '',
-    author: '知笔知己团队',
+    author: 'NotesAgent 团队',
     permissions: ['notes.search', 'notes.read', 'tasks.create'],
     tools: ['notes.search', 'notes.read', 'tasks.create'],
     retrieval_config: { top_k: 10, rerank: true, citation: true },
@@ -64,7 +64,7 @@ export const mockSkills: Skill[] = [
     version: '1.1.0',
     description: '从音频或文本中提取会议要点、行动项和待办任务',
     icon: '',
-    author: '知笔知己团队',
+    author: 'NotesAgent 团队',
     permissions: ['notes.search', 'notes.write', 'tasks.write', 'attachments.read'],
     tools: ['notes.search', 'notes.create', 'tasks.create', 'attachments.read'],
     retrieval_config: { top_k: 5, rerank: false, citation: true },

frontend/src/services/workspaceService.ts

@@ -58,7 +58,7 @@ const MOCK_FILE_TREE: FileNode[] = [
       { id: 'n-http', name: 'HTTP协议.md', path: '/计算机网络/HTTP协议.md', type: 'file' },
     ],
   },
-  { id: 'n-welcome', name: '欢迎使用知笔知己.md', path: '/欢迎使用知笔知己.md', type: 'file' },
+  { id: 'n-welcome', name: '欢迎使用 NotesAgent.md', path: '/欢迎使用 NotesAgent.md', type: 'file' },
 ]
 
 const mockFileContents = new Map<string, string>()
@@ -89,8 +89,8 @@ export function readFileContent(filePath: string): Promise<string> {
   const saved = mockFileContents.get(filePath)
   if (saved !== undefined) return Promise.resolve(saved)
   const name = filePath.split('/').pop() || 'Untitled'
-  if (name === '欢迎使用知笔知己.md') {
-    return rememberContent(filePath, `# 欢迎使用知笔知己
+  if (name === '欢迎使用 NotesAgent.md') {
+    return rememberContent(filePath, `# 欢迎使用 NotesAgent
 
 这是一款本地优先的 AI 笔记软件，支持 Markdown 编辑、智能检索、RAG 问答和 Agent 助手。
 
@@ -207,7 +207,7 @@ def quick_sort(arr):
 > 引用内容示例
 
 \`\`\`javascript
-console.log('Hello, Notes Agent!');
+console.log('Hello, NotesAgent!');
 \`\`\`
 `)
 }

frontend/src/stores/theme.spec.ts

@@ -0,0 +1,47 @@
+// @vitest-environment happy-dom
+import { beforeEach, describe, expect, it } from 'vitest'
+import { createPinia, setActivePinia } from 'pinia'
+import { nextTick } from 'vue'
+import { useThemeStore } from './theme'
+
+beforeEach(() => {
+  localStorage.clear()
+  document.documentElement.removeAttribute('data-theme')
+  document.documentElement.removeAttribute('data-code-theme')
+  setActivePinia(createPinia())
+  Object.defineProperty(window, 'matchMedia', {
+    configurable: true,
+    value: () => ({ matches: false }),
+  })
+})
+
+describe('代码块主题偏好', () => {
+  it('跟随应用主题选择对应的 GitHub 代码主题', async () => {
+    const store = useThemeStore()
+    store.applyTheme('dark')
+    await nextTick()
+
+    expect(store.resolvedCodeBlockTheme).toBe('github-dark')
+    expect(document.documentElement.dataset.codeTheme).toBe('github-dark')
+  })
+
+  it('允许代码块主题独立于应用主题', async () => {
+    const store = useThemeStore()
+    store.applyTheme('dark')
+    store.codeBlockTheme = 'github-light'
+    await nextTick()
+
+    expect(store.resolvedCodeBlockTheme).toBe('github-light')
+    expect(document.documentElement.dataset.codeTheme).toBe('github-light')
+  })
+
+  it('恢复持久化的代码块主题偏好', async () => {
+    localStorage.setItem('editor-appearance', JSON.stringify({ codeBlockTheme: 'github-dark' }))
+    const store = useThemeStore()
+    store.initTheme()
+    await nextTick()
+
+    expect(store.codeBlockTheme).toBe('github-dark')
+    expect(document.documentElement.dataset.codeTheme).toBe('github-dark')
+  })
+})

frontend/src/stores/theme.ts

@@ -3,17 +3,24 @@ import { ref, computed, watch } from 'vue'
 import type { ThemeConfig } from '@/contracts'
 
 const builtinThemes: ThemeConfig[] = [
-  { theme_id: 'light', name: '浅色', version: '1.0.0', description: '默认浅色主题', is_dark: false, builtin: true },
-  { theme_id: 'dark', name: '深色', version: '1.0.0', description: '默认深色主题', is_dark: true, builtin: true },
-  { theme_id: 'sepia', name: '护眼', version: '1.0.0', description: '护眼暖色调', is_dark: false, builtin: true },
+  { theme_id: 'light', name: '浅色', version: '1.0.0', description: '默认浅色主题', is_dark: false, builtin: true, code_theme: 'github-light' },
+  { theme_id: 'dark', name: '深色', version: '1.0.0', description: '默认深色主题', is_dark: true, builtin: true, code_theme: 'github-dark' },
+  { theme_id: 'sepia', name: '护眼', version: '1.0.0', description: '护眼暖色调', is_dark: false, builtin: true, code_theme: 'github-light' },
 ]
 
+export type CodeBlockThemePreference = 'auto' | 'github-light' | 'github-dark'
+
+function isCodeBlockThemePreference(value: unknown): value is CodeBlockThemePreference {
+  return value === 'auto' || value === 'github-light' || value === 'github-dark'
+}
+
 export const useThemeStore = defineStore('theme', () => {
   const themes = ref<ThemeConfig[]>(builtinThemes)
   const currentThemeId = ref<string>('light')
   const fontEditorSize = ref(15)
   const fontEditorFamily = ref('system-ui')
   const lineHeight = ref(1.7)
+  const codeBlockTheme = ref<CodeBlockThemePreference>('auto')
   let appearanceHydrated = false
 
   const currentTheme = computed(() =>
@@ -21,6 +28,10 @@ export const useThemeStore = defineStore('theme', () => {
   )
 
   const isDark = computed(() => currentTheme.value?.is_dark || false)
+  const resolvedCodeBlockTheme = computed<'github-light' | 'github-dark'>(() => {
+    if (codeBlockTheme.value !== 'auto') return codeBlockTheme.value
+    return currentTheme.value?.code_theme ?? (isDark.value ? 'github-dark' : 'github-light')
+  })
 
   function applyTheme(themeId: string) {
     const theme = themes.value.find((t) => t.theme_id === themeId)
@@ -41,10 +52,11 @@ export const useThemeStore = defineStore('theme', () => {
     const savedAppearance = localStorage.getItem('editor-appearance')
     if (savedAppearance) {
       try {
-        const value = JSON.parse(savedAppearance) as { size?: number; family?: string; lineHeight?: number }
+        const value = JSON.parse(savedAppearance) as { size?: number; family?: string; lineHeight?: number; codeBlockTheme?: unknown }
         if (value.size) fontEditorSize.value = value.size
         if (value.family) fontEditorFamily.value = value.family
         if (value.lineHeight) lineHeight.value = value.lineHeight
+        if (isCodeBlockThemePreference(value.codeBlockTheme)) codeBlockTheme.value = value.codeBlockTheme
       } catch { localStorage.removeItem('editor-appearance') }
     }
     const saved = localStorage.getItem('theme')
@@ -67,12 +79,20 @@ export const useThemeStore = defineStore('theme', () => {
     fontEditorSize.value = 15
     fontEditorFamily.value = 'system-ui'
     lineHeight.value = 1.7
+    codeBlockTheme.value = 'auto'
   }
 
   const persistAppearance = () => localStorage.setItem('editor-appearance', JSON.stringify({
-    size: fontEditorSize.value, family: fontEditorFamily.value, lineHeight: lineHeight.value,
+    size: fontEditorSize.value,
+    family: fontEditorFamily.value,
+    lineHeight: lineHeight.value,
+    codeBlockTheme: codeBlockTheme.value,
   }))
 
+  watch(resolvedCodeBlockTheme, (theme) => {
+    document.documentElement.setAttribute('data-code-theme', theme)
+  }, { immediate: true })
+
   watch(fontEditorSize, (v) => {
     document.documentElement.style.setProperty('--font-editor-size', `${v}px`)
     if (appearanceHydrated) persistAppearance()
@@ -88,6 +108,10 @@ export const useThemeStore = defineStore('theme', () => {
     if (appearanceHydrated) persistAppearance()
   }, { immediate: true })
 
+  watch(codeBlockTheme, () => {
+    if (appearanceHydrated) persistAppearance()
+  })
+
   return {
     themes,
     currentThemeId,
@@ -96,6 +120,8 @@ export const useThemeStore = defineStore('theme', () => {
     fontEditorSize,
     fontEditorFamily,
     lineHeight,
+    codeBlockTheme,
+    resolvedCodeBlockTheme,
     applyTheme,
     initTheme,
     toggleTheme,

frontend/src/styles/features.css

@@ -1,9 +1,18 @@
 .feature-page {
   height: 100%;
   overflow: auto;
-  padding: var(--space-2xl);
-  background: var(--color-background-primary);
+  padding: clamp(var(--space-lg), 3vw, var(--space-3xl));
+  background:
+    radial-gradient(circle at 92% -8%, var(--color-accent-soft) 0, transparent 28%),
+    var(--color-background-primary);
   user-select: text;
+  scrollbar-gutter: stable;
+  animation: page-in var(--motion-normal) both;
+}
+
+.chat-page,
+.workspace-view {
+  animation: page-in var(--motion-normal) both;
 }
 
 .feature-header {
@@ -11,13 +20,15 @@
   align-items: flex-start;
   justify-content: space-between;
   gap: var(--space-lg);
-  margin-bottom: var(--space-xl);
+  margin: 0 auto var(--space-2xl);
+  max-width: 1180px;
 }
 
-.feature-header h1 { font-size: var(--font-size-3xl); line-height: 1.2; }
-.feature-header p { margin-top: var(--space-xs); color: var(--color-text-secondary); }
+.feature-header h1 { font-size: clamp(var(--font-size-2xl), 2.3vw, 30px); line-height: 1.15; letter-spacing: -.025em; }
+.feature-header p { max-width: 680px; margin-top: var(--space-sm); color: var(--color-text-secondary); }
 .feature-actions, .inline-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-sm); }
-.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-lg); }
+.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-lg); max-width: 1180px; margin-inline: auto; }
+.feature-page > .panel { max-width: 1180px; margin-inline: auto; }
 .split-view { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(360px, 1.7fr); gap: var(--space-lg); min-height: 0; }
 
 .panel, .item-card {
@@ -27,10 +38,13 @@
   box-shadow: var(--shadow-sm);
 }
 
-.panel { padding: var(--space-xl); }
-.item-card { padding: var(--space-lg); transition: border-color var(--motion-fast), transform var(--motion-fast); }
-.item-card:hover { border-color: var(--color-accent-secondary); }
-.item-card.selected { border-color: var(--color-accent-primary); box-shadow: 0 0 0 2px var(--color-accent-soft); }
+.panel { padding: clamp(var(--space-lg), 2.2vw, var(--space-2xl)); }
+.item-card {
+  padding: var(--space-lg);
+  transition: border-color var(--motion-fast), box-shadow var(--motion-fast), transform var(--motion-fast), background-color var(--motion-fast);
+}
+.item-card:hover { border-color: var(--color-accent-secondary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
+.item-card.selected { border-color: var(--color-accent-primary); box-shadow: 0 0 0 3px var(--color-accent-soft), var(--shadow-md); }
 .panel-title { margin-bottom: var(--space-md); font-size: var(--font-size-xl); }
 .muted { color: var(--color-text-secondary); }
 .subtle { color: var(--color-text-tertiary); font-size: var(--font-size-sm); }
@@ -41,14 +55,18 @@
   border: 1px solid transparent;
   border-radius: var(--radius-md);
   font-weight: 600;
+  line-height: 1;
+  transition: background-color var(--motion-fast), border-color var(--motion-fast), color var(--motion-fast), box-shadow var(--motion-fast), transform var(--motion-fast);
 }
 
-.button-primary { background: var(--color-accent-primary); color: var(--color-text-inverse); }
-.button-primary:hover { background: var(--color-accent-primary-hover); }
+.button-primary { background: var(--color-accent-primary); color: var(--color-text-inverse); box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-primary) 24%, transparent); }
+.button-primary:hover { background: var(--color-accent-primary-hover); transform: translateY(-1px); box-shadow: 0 7px 18px color-mix(in srgb, var(--color-accent-primary) 28%, transparent); }
 .button-secondary { border-color: var(--color-border-default); background: var(--color-surface-primary); }
-.button-secondary:hover, .icon-button:hover { background: var(--color-background-hover); }
+.button-secondary:hover, .icon-button:hover { border-color: var(--color-accent-secondary); background: var(--color-background-hover); color: var(--color-accent-primary); transform: translateY(-1px); }
 .button-danger { background: var(--color-error-soft); color: var(--color-error); }
-button:disabled { cursor: not-allowed; opacity: .55; }
+.button-danger:hover { transform: translateY(-1px); box-shadow: 0 5px 14px color-mix(in srgb, var(--color-error) 18%, transparent); }
+button:active:not(:disabled) { transform: translateY(0); }
+button:disabled { cursor: not-allowed; opacity: .55; box-shadow: none; transform: none; }
 
 .field { display: grid; gap: var(--space-xs); }
 .field label { color: var(--color-text-secondary); font-size: var(--font-size-sm); font-weight: 600; }
@@ -59,10 +77,12 @@ button:disabled { cursor: not-allowed; opacity: .55; }
   outline: none;
   background: var(--color-background-primary);
   color: var(--color-text-primary);
+  transition: border-color var(--motion-fast), box-shadow var(--motion-fast), background-color var(--motion-fast);
 }
-.input, .select { height: 36px; padding: 0 var(--space-md); }
+.input, .select { height: 38px; padding: 0 var(--space-md); }
 .textarea { min-height: 100px; padding: var(--space-md); resize: vertical; }
-.input:focus, .select:focus, .textarea:focus { border-color: var(--color-border-focus); box-shadow: 0 0 0 2px var(--color-accent-soft); }
+.input:hover, .select:hover, .textarea:hover { border-color: var(--color-text-tertiary); }
+.input:focus, .select:focus, .textarea:focus { border-color: var(--color-border-focus); box-shadow: 0 0 0 3px var(--color-accent-soft); background: var(--color-surface-primary); }
 .form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-md); }
 
 .badge {
@@ -75,6 +95,7 @@ button:disabled { cursor: not-allowed; opacity: .55; }
   color: var(--color-text-secondary);
   font-size: var(--font-size-xs);
   font-weight: 600;
+  letter-spacing: .01em;
 }
 .badge.success { background: var(--color-success-soft); color: var(--color-success); }
 .badge.warning { background: var(--color-warning-soft); color: var(--color-warning); }
@@ -82,25 +103,45 @@ button:disabled { cursor: not-allowed; opacity: .55; }
 .badge.info { background: var(--color-info-soft); color: var(--color-info); }
 .tag-list { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
 
-.empty-state { display: grid; place-items: center; min-height: 220px; padding: var(--space-2xl); text-align: center; color: var(--color-text-secondary); }
+.empty-state { display: grid; place-items: center; min-height: 220px; padding: var(--space-3xl); border: 1px dashed var(--color-border-default); border-radius: var(--radius-xl); background: color-mix(in srgb, var(--color-background-secondary) 74%, transparent); text-align: center; color: var(--color-text-secondary); }
 .empty-state strong { display: block; margin-bottom: var(--space-xs); color: var(--color-text-primary); font-size: var(--font-size-xl); }
-.error-banner { margin-bottom: var(--space-lg); padding: var(--space-md); border-radius: var(--radius-md); background: var(--color-error-soft); color: var(--color-error); }
-.notice-banner { margin-bottom: var(--space-lg); padding: var(--space-md); border-radius: var(--radius-md); background: var(--color-info-soft); color: var(--color-info); }
+.error-banner, .notice-banner { border: 1px solid transparent; animation: notice-in var(--motion-normal) both; }
+.error-banner { margin-bottom: var(--space-lg); padding: var(--space-md) var(--space-lg); border-color: color-mix(in srgb, var(--color-error) 22%, transparent); border-radius: var(--radius-md); background: var(--color-error-soft); color: var(--color-error); }
+.notice-banner { margin-bottom: var(--space-lg); padding: var(--space-md) var(--space-lg); border-color: color-mix(in srgb, var(--color-info) 22%, transparent); border-radius: var(--radius-md); background: var(--color-info-soft); color: var(--color-info); }
 
 .sidebar-panel { padding: var(--space-md); }
 .sidebar-panel .input, .sidebar-panel .select { margin-bottom: var(--space-sm); }
 .sidebar-list { display: grid; gap: var(--space-xs); }
-.sidebar-list-item { padding: var(--space-sm); border-radius: var(--radius-md); cursor: pointer; }
-.sidebar-list-item:hover, .sidebar-list-item.active { background: var(--color-background-hover); }
+.sidebar-list-item { padding: 9px var(--space-sm); border: 1px solid transparent; border-radius: var(--radius-md); cursor: pointer; transition: color var(--motion-fast), background-color var(--motion-fast), border-color var(--motion-fast), transform var(--motion-fast); }
+.sidebar-list-item:hover { background: var(--color-background-hover); transform: translateX(2px); }
+.sidebar-list-item.active { border-color: color-mix(in srgb, var(--color-accent-primary) 18%, transparent); background: var(--color-accent-soft); color: var(--color-accent-primary); }
 
-.modal-backdrop { position: fixed; inset: 0; z-index: var(--z-modal); display: grid; place-items: center; padding: var(--space-xl); background: var(--color-background-overlay); }
-.modal { width: min(560px, 100%); max-height: 85vh; overflow: auto; padding: var(--space-xl); border-radius: var(--radius-lg); background: var(--color-surface-elevated); box-shadow: var(--shadow-xl); }
+.modal-backdrop { position: fixed; inset: 0; z-index: var(--z-modal); display: grid; place-items: center; padding: var(--space-xl); background: var(--color-background-overlay); animation: backdrop-in var(--motion-fast) both; }
+.modal { width: min(560px, 100%); max-height: 85vh; overflow: auto; padding: var(--space-2xl); border: 1px solid var(--color-border-default); border-radius: var(--radius-xl); background: var(--color-surface-elevated); box-shadow: var(--shadow-xl); animation: modal-in var(--motion-normal) both; }
 .modal h2 { margin-bottom: var(--space-lg); }
 .modal form { display: grid; gap: var(--space-md); }
 
-.settings-nav { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-bottom: var(--space-xl); border-bottom: 1px solid var(--color-border-default); }
-.settings-nav button { padding: var(--space-sm) var(--space-md); border-bottom: 2px solid transparent; color: var(--color-text-secondary); }
-.settings-nav button.active { border-color: var(--color-accent-primary); color: var(--color-accent-primary); }
+.settings-nav { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-bottom: var(--space-xl); padding: var(--space-xs); border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); background: var(--color-background-secondary); }
+.settings-nav button { padding: 8px var(--space-md); border-radius: var(--radius-md); color: var(--color-text-secondary); transition: color var(--motion-fast), background-color var(--motion-fast), box-shadow var(--motion-fast); }
+.settings-nav button:hover { color: var(--color-text-primary); background: var(--color-background-hover); }
+.settings-nav button.active { background: var(--color-surface-primary); color: var(--color-accent-primary); box-shadow: var(--shadow-sm); }
+
+@keyframes page-in {
+  from { opacity: 0; transform: translateY(6px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes notice-in {
+  from { opacity: 0; transform: translateY(-4px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes backdrop-in { from { opacity: 0; } to { opacity: 1; } }
+
+@keyframes modal-in {
+  from { opacity: 0; transform: translateY(8px) scale(.985); }
+  to { opacity: 1; transform: translateY(0) scale(1); }
+}
 
 @media (max-width: 900px) {
   .feature-page { padding: var(--space-lg); }

frontend/src/styles/motion.spec.ts

@@ -0,0 +1,44 @@
+/// <reference types="node" />
+
+import { readFileSync } from 'node:fs'
+import { describe, expect, it } from 'vitest'
+
+const globalStyles = [
+  new URL('./tokens.css', import.meta.url),
+  new URL('./features.css', import.meta.url),
+].map((path) => readFileSync(path, 'utf8')).join('\n')
+
+const markdownStyles = [
+  new URL('../features/editor/VisualMarkdownEditor.vue', import.meta.url),
+  new URL('../features/themes/ThemesView.vue', import.meta.url),
+  new URL('../components/common/MarkdownContent.vue', import.meta.url),
+].map((path) => readFileSync(path, 'utf8')).join('\n')
+
+describe('轻量动效基线', () => {
+  it('为减少动态效果偏好提供全局回退', () => {
+    expect(globalStyles).toContain('@media (prefers-reduced-motion: reduce)')
+  })
+
+  it('不使用全属性过渡或高成本模糊滤镜', () => {
+    expect(globalStyles).not.toMatch(/transition:\s*all\b/)
+    expect(globalStyles).not.toMatch(/(?:backdrop-)?filter\s*:/)
+  })
+
+  it('页面入场只改变透明度和变换', () => {
+    const pageAnimation = globalStyles.match(/@keyframes page-in\s*{[\s\S]*?\n}/)?.[0] ?? ''
+    expect(pageAnimation).toContain('opacity')
+    expect(pageAnimation).toContain('transform')
+    expect(pageAnimation).not.toMatch(/(?:width|height|margin|padding|top|left)\s*:/)
+  })
+
+  it('Markdown 序号和表格使用独立的高对比度主题变量', () => {
+    expect(globalStyles).toContain('--color-markdown-grid:')
+    expect(globalStyles).toContain('--color-markdown-marker:')
+    expect(markdownStyles).toContain('var(--color-markdown-grid)')
+    expect(markdownStyles).toContain('var(--color-markdown-marker)')
+  })
+
+  it('不混用可能丢失后代选择器的 scoped global 写法', () => {
+    expect(markdownStyles).not.toMatch(/:global\([^\n]+\)\s+\./)
+  })
+})

frontend/src/styles/tokens.css

@@ -44,17 +44,22 @@
   --color-border-focus: #5b67f1;
   --color-border-disabled: #eef0f3;
 
+  /* Markdown */
+  --color-markdown-grid: #8b949e;
+  --color-markdown-marker: #343b44;
+  --color-markdown-table-header: #eef0f3;
+
   /* Shadow */
-  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
-  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
-  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
-  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
+  --shadow-sm: 0 1px 2px rgba(31, 35, 40, 0.05), 0 1px 5px rgba(31, 35, 40, 0.03);
+  --shadow-md: 0 8px 22px rgba(31, 35, 40, 0.08), 0 2px 6px rgba(31, 35, 40, 0.04);
+  --shadow-lg: 0 16px 36px rgba(31, 35, 40, 0.11), 0 4px 12px rgba(31, 35, 40, 0.05);
+  --shadow-xl: 0 24px 64px rgba(31, 35, 40, 0.18), 0 8px 20px rgba(31, 35, 40, 0.08);
 
   /* Radius */
-  --radius-sm: 4px;
-  --radius-md: 6px;
-  --radius-lg: 10px;
-  --radius-xl: 14px;
+  --radius-sm: 6px;
+  --radius-md: 9px;
+  --radius-lg: 13px;
+  --radius-xl: 18px;
   --radius-full: 9999px;
 
   /* Spacing */
@@ -100,16 +105,16 @@
   --z-titlebar: 500;
 
   /* Motion */
-  --motion-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
-  --motion-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
-  --motion-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
+  --motion-fast: 120ms cubic-bezier(0.2, 0, 0, 1);
+  --motion-normal: 190ms cubic-bezier(0.2, 0, 0, 1);
+  --motion-slow: 260ms cubic-bezier(0.2, 0, 0, 1);
 
   /* Layout */
-  --titlebar-height: 38px;
-  --sidebar-primary-width: 52px;
+  --titlebar-height: 42px;
+  --sidebar-primary-width: 58px;
   --sidebar-primary-width-expanded: 180px;
-  --sidebar-secondary-width: 260px;
-  --statusbar-height: 26px;
+  --sidebar-secondary-width: 272px;
+  --statusbar-height: 28px;
 }
 
 [data-theme='dark'] {
@@ -152,6 +157,10 @@
   --color-border-focus: #7d8bff;
   --color-border-disabled: #21262d;
 
+  --color-markdown-grid: #6e7681;
+  --color-markdown-marker: #c9d1d9;
+  --color-markdown-table-header: #21262d;
+
   --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
   --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
   --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
@@ -172,12 +181,29 @@
   --color-text-tertiary: #9a8a72;
   --color-border-default: #ddcfad;
   --color-border-subtle: #eadfc4;
+  --color-markdown-grid: #9c8353;
+  --color-markdown-marker: #554735;
+  --color-markdown-table-header: #eadbb8;
   --color-accent-primary: #8a5b32;
   --color-accent-primary-hover: #704724;
   --color-accent-soft: #edddbd;
   --color-text-link: #7b512e;
 }
 
+[data-code-theme='github-light'] {
+  --color-code-background: #f6f8fa;
+  --color-code-border: #d0d7de;
+  --color-code-text: #24292f;
+  --color-code-muted: #57606a;
+}
+
+[data-code-theme='github-dark'] {
+  --color-code-background: #161b22;
+  --color-code-border: #30363d;
+  --color-code-text: #c9d1d9;
+  --color-code-muted: #8b949e;
+}
+
 * {
   box-sizing: border-box;
   margin: 0;
@@ -221,6 +247,25 @@ button {
   color: inherit;
 }
 
+button,
+a,
+input,
+textarea,
+select {
+  -webkit-tap-highlight-color: transparent;
+}
+
+input[type='checkbox'],
+input[type='radio'],
+input[type='range'] {
+  accent-color: var(--color-accent-primary);
+}
+
+:focus-visible {
+  outline: 2px solid var(--color-border-focus);
+  outline-offset: 2px;
+}
+
 input,
 textarea,
 select {
@@ -261,7 +306,25 @@ ol {
   color: var(--color-accent-primary);
 }
 
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+}
+
 [data-theme='dark'] ::selection {
   background: var(--color-accent-primary);
   color: var(--color-text-inverse);
 }
+
+@media (max-width: 900px) {
+  :root {
+    --sidebar-primary-width-expanded: 160px;
+    --sidebar-secondary-width: 224px;
+  }
+}

frontend/src/utils/markdown.spec.ts

@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest'
+import { highlightCode } from './markdown'
+
+describe('Shiki GitHub 双主题', () => {
+  it('一次渲染同时生成 GitHub Light 和 GitHub Dark 颜色变量', async () => {
+    const html = await highlightCode('const answer = 42', 'typescript')
+
+    expect(html).toContain('github-light')
+    expect(html).toContain('github-dark')
+    expect(html).toContain('--shiki-light')
+    expect(html).toContain('--shiki-dark')
+  })
+})