Add platform optimization guidance to About page

[Copilot]

本專案是 GitHub Pages 部署的教育資源平台，本次補充「如何進一步優化與精進」的公開說明，讓使用者與貢獻者更容易對齊後續改進方向。

• 內容導覽
  • 新增「平台優化與精進方向」區塊，整理內容更新、效能、無障礙、社群成效四大面向
• 導流入口
  • 首頁「我們是誰？」加入連結直達優化區塊

<section id="platform-optimization" class="py-20 bg-white">
  <h2 class="text-3xl md:text-4xl font-bold">平台優化與精進方向</h2>
</section>

https://github.com/user-attachments/assets/9ee42ba1-267b-48d5-a1d4-d7741bb8be31

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[Copilot]

Pull request overview

Adds a new “platform optimization” information section to the About page and links to it from the homepage, so visitors can quickly discover suggested optimization directions for the GitHub Pages site.

Changes:

• Add a second CTA on index.html linking directly to a new about.html#platform-optimization section.
• Introduce a new “平台優化與精進方向” section in about.html describing content/performance/accessibility/community improvement ideas.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
index.html	Adds a second “查看平台優化方向” link pointing to the new About-page anchor.
about.html	Adds the #platform-optimization section (new content block) and re-numbers subsequent section comments.

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[Copilot]

The new in-page anchor target #platform-optimization sits under a sticky header (header has sticky top-0), so navigating from index.html#... will likely land with the section heading hidden behind the header. Other pages handle this via scroll-margin-top/scroll-mt-* for anchor targets (e.g., advanced-resources/index.html:29-31, civic-tech-map/index.html:271). Consider adding an appropriate scroll-mt-* class (or equivalent CSS) to this section so the heading is visible when linked directly.