How to provide CSS navigation?

Question

css

I can't google a solution to what seems to me a standard situation - splitting a CSS file into sections for easy navigation. They offer huge ASCII headers to be visible in the map, a substring for searching, large gaps for catching when visually scrolling. But these are some strange crutches.
Is there really no plugin for organizing and surfing through the document? That would be wildly convenient. I have Sublime 3.

Answer 1

switch from css to sass and import

Answer 2

Try the comments, your captain :)
You can even do something like a table of contents at the beginning of the CSS file:
Then copy and through Search go to the required part.
But better take Anton's advice. For some layout designers, each large block of CSS is in separate files: header - in header.scss, body - in body.scss, aside - in aside.scss.
SCSS is also a preprocessor, a variation of SASS