How to create a document with indented sections?

Hi there, I am trying to create documents whose paragraphs and sections are all numbered, and need to be referenced between one another. I also want the indentation of all text in the paragraph to increase with the numbering level, like the attached screenshot.

How is this achieved in typst?

Something like this may be a start:

#set enum(full: true, indent: 1cm, spacing: 1cm)

+ This is the first. #lorem(34)
  + this is the second #lorem(77)

    This is the next paragraph
  + This is second level. It is a paragraph! #lorem(567)

What do you mean by numbered and referenced paragraphs?

And what is “indented sections”? Headings or list items?