feat: add support for browser-supplied math font (#4119)#4129
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yuna0831 wants to merge 3 commits intoKaTeX:mainfrom
Open
feat: add support for browser-supplied math font (#4119)#4129yuna0831 wants to merge 3 commits intoKaTeX:mainfrom
yuna0831 wants to merge 3 commits intoKaTeX:mainfrom
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What is the previous behavior before this PR?
Previously, KaTeX always required downloading and using its own web fonts (KaTeX_Main, KaTeX_Math, etc.) to render math symbols correctly. There was no built-in option to utilize the native font-family: math supported by modern browsers, which could lead to unnecessary network requests for users who prefer system math fonts.
What is the new behavior after this PR?
This PR introduces a new Sass variable $use-browser-math-font (defaulting to false). When set to true:
It prepends the math keyword to font-family declarations for .katex, .mathnormal, and .mathbf classes.
It suppresses @font-face declarations to prevent the browser from downloading KaTeX web fonts, reducing the initial page load weight.
Browsers supporting the math family will use the system's math font, while others will fallback to standard system fonts (serif).
Closes #4119