Why does the default TwentyTwentyThree theme have .json files as it’s stylesheets?

I’m new to webdev and this is very confusing for me. Why does this theme have .json stylesheets instead of .css, or .sass? Is this a method I should be using?


This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer