fix: 统一所有页面导航栏样式和位置

- 修复导航栏在不同页面显示不一致的问题
- 锁定导航栏位置，移除滚动动画
- 强制设置白色背景和高z-index确保导航栏始终在最顶层
- 统一index.html和pages目录下所有页面的导航栏表现

.claude/settings.local.json

@@ -72,7 +72,13 @@
       "Bash(sed:*)",
       "Bash(/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/start.bat)",
       "Bash(curl:*)",
-      "Bash(node server.js)"
+      "Bash(node server.js)",
+      "mcp__browser-tools__takeScreenshot",
+      "Bash(for file in pages/exhibition.html pages/marketing.html pages/operation.html pages/budget.html pages/risk.html)",
+      "Bash(do sed -i '' 's|</body>|    <script src=\"\"../js/nav-component.js\"\"></script>\\n</body>|' \"$file\")",
+      "Bash(done)",
+      "mcp__playwright__browser_navigate",
+      "mcp__playwright__browser_take_screenshot"
     ],
     "defaultMode": "acceptEdits",
     "additionalDirectories": [