i might be missing something about shevy HOT 2 CLOSED

I think you're missing something. The bottom most section is the one that uses two typography maps. They change font sizes at 540px wide. For example, below that breakpoint, the h1 font-size is 32px, and above that font-size the h1 font-size is 4.5em, which shows that the kind of mathematics used can be changed for the same typography.

Below 540px:

Above 540px:

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I would also like to add that by responsive typography, I simply mean being able to redefine your font-scale per breakpoint. I never intended Shevy to dynamically adjust font-sizes via the browser width, though techniques exist using vw units to try that.

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