主页重构

src/content/docs/zh-cn/index.mdx

@@ -1,42 +1,7 @@
 ---
-title: 欢迎使用 Σ 文档
-description: 本文档是一份开放贡献的 RoboMaster 系列赛事相关知识教程库。
-template: splash # Remove or comment out this line to display the site sidebar on this page.
+title: ΣDOCS · Simba 战队知识库
+description: 黑龙江大学 Simba Robotics 战队的开放知识库，汇集机械、电控、视觉、团队协作与 2026 RoboMaster 校内赛手册。
+template: splash
 hero:
-  tagline: 基于 Astro / Starlight 搭建，少女施工中...
-  image:
-    file: ../../../assets/houston.webp
-  actions:
-    - text: 阅读概览
-      link: /zh-cn/intro
-      icon: right-arrow
-    - text: 提交修改
-      link: https://git.simba-robotics.com/PRAM/simba_docs
-    - text: 访问 Simba 官网
-      link: https://simba-robotics.com
-      icon: external
-      variant: minimal
+  title: BUILD. LEARN. ITERATE.
 ---
-
-import { Card, CardGrid } from '@astrojs/starlight/components';
-
-## Next steps
-
-<CardGrid stagger>
-	<Card title="Update content" icon="pencil">
-		Edit `src/content/docs/index.mdx` to see this page change.
-	</Card>
-	<Card title="Change page layout" icon="document">
-		Delete `template: splash` in `src/content/docs/index.mdx` to display a
-		sidebar on this page.
-	</Card>
-	<Card title="Add new content" icon="add-document">
-		Add Markdown or MDX files to `src/content/docs` to create new pages.
-	</Card>
-	<Card title="Configure your site" icon="setting">
-		Edit your `sidebar` and other config in `astro.config.mjs`.
-	</Card>
-	<Card title="Read the docs" icon="open-book">
-		Learn more in [the Starlight Docs](https://starlight.astro.build/).
-	</Card>
-</CardGrid>