The LaTeX amsart document class displays section headings at depth >= 2 as run-in. As far as I understand, the unequivocal-ams template tries to reproduce this behavior.
However, this does not seem to work, either locally with typst 0.13 or using the web application. For example, the document
#import "@preview/unequivocal-ams:0.1.2": ams-article, theorem, proof
#show: ams-article
= Introduction
#lorem(45)
== Motivation
#lorem(45)
=== Details
#lorem(45)
gets rendered to the following.

(This behavior might or might not be related to the fact that the code given in the tutorial to get run-in headings only works if there is no blank line after the heading (see typst/typst#5961). Anyway, as the above example demonstrates not having a blank line not enough for unequivocal-ams.)
The LaTeX
amsartdocument class displays section headings at depth >= 2 as run-in. As far as I understand, theunequivocal-amstemplate tries to reproduce this behavior.However, this does not seem to work, either locally with typst 0.13 or using the web application. For example, the document
gets rendered to the following.
(This behavior might or might not be related to the fact that the code given in the tutorial to get run-in headings only works if there is no blank line after the heading (see typst/typst#5961). Anyway, as the above example demonstrates not having a blank line not enough for
unequivocal-ams.)