CSS coding standards in .json files

[unscripted]

When writing custom CSS in theme.json and custom style .json files, what coding standards should be followed?

This question is prompted by work I was doing for block styles variations that require custom CSS.

While we are able to follow most standards outlined in the WordPress CSS Coding Standards, coding structure, commenting and spacing are a bit more tricky in JSON.

A few questions:

• Is CSS added in JSON files able to be minified?
• If not, should CSS be written without spaces?
• What is the best way to document CSS in a JSON file that maintains readability?