light.css 会导致 mermaid 图标连线文字错位

light 效果

<img width="1904" height="1374" alt="Image" src="https://github.com/user-attachments/assets/33749668-8439-472a-a57d-8667661c2ef7" />


dark 效果

<img width="1972" height="1252" alt="Image" src="https://github.com/user-attachments/assets/a61003e8-8aa9-4b9e-b7a1-521e78297c1f" />


浅色系引入 light.css 的均有显示的问题，希望可以修复👍