Re: [csswg-drafts] [css-fonts] `system-ui` behavior is undesired for some users (#3658)

Yu Gothic UI is not suitable for long text. It is _abused_ by some documentation frameworks (e.g. Docusaurus and VitePress) via `system-ui`, but __it is not optimized for long text, which they are designed to serve.__ It is overly optimized for cramming labels or relatively short descriptions into narrow spaces. Hiragana and katakana are too condensed compared to han characters.

Noto Sans JP (`sans-serif`) and Yu Gothic provide better reading experience for long text like documentation and blog.

`system-ui` is _only_ for web-based _apps_ that want to provide a similar appearance to the OS.

For documents and blogs, the order "Apple system font designations > Latin fonts (e.g. Inter or Segoe UI) > `sans-serif`" is the best.

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Received on Tuesday, 16 September 2025 15:08:07 UTC