I'm interested in learning how to move CSS styles to theme.json. The reason is that when modifying WordPress themes, I'm used to changing and adding to the CSS stylesheet.

With the advent of block themes and the block theme editor, theme.json plays a central role in setting styles.

I do see that block themes use CSS variables, but I would like to set some default starting CSS properties and values. That will help with customizing themes and developing custom block themes.