feat: modular font-size scale

[unekinn]

Summary

Implements modular font scale as in this PoC for Figma and CSS.

Custom, native CSS formula for the type of font scale described in Tim Brown's More Meaningful Typography

The formula allows setting the wanted body font size with --ds-font-scale-base and stretching or squeezing the scale with --ds-font-scale-ratio

TODO:

• option to generate static values instead of formulas? Would be useful if someone using Designsystemet wants very specific font size values
• detect when static values are needed

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Latest commit: cd46c38

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Preview deployments for this pull request:

storybook - 25. Sep 2025 - 16:00

www - 22. Sep 2025 - 10:31