What version of starlight are you using?

0.38.2

What version of astro are you using?

6.1.0

What package manager are you using?

npm

What operating system are you using?

Mac

What browser are you using?

Chrome

Describe the Bug

use import { getRelativeLocaleUrl } from 'astro:i18n'
const docsHref = getRelativeLocaleUrl('en', 'second_page') in a header component used by main layout make the starlight CSS leak in all pages.

Link to Minimal Reproducible Example

https://github.com/riderx/astro-reproduction-css-issue

Participation

• I am willing to submit a pull request for this issue.