I want to write a documentation page where I have something like:

Title
*****

Introductory text

Subsection with more details
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Details

Section 1
=========

Section 2
=========

Unfortunately, this only renders Subsection with more details as the main section, with all subsequent ones being the subsections. From my research, it seems to happen because Sphinx doesn't have a fixed hierarchy for headings and instead it just interprets the document structure to decide on what the sections are, based on their succession (as seen at https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html).

I have also tried using upper markup to titles, to force section hierarchy, but that doesn't seem to work either. Is there a not too invasive way of doing this? This page is for an open source project with lot of documentation pages already, not all following the same markup standards, and I'm afraid that if I tried to somehow define in our settings what each section/subsection marker should look like, we would have a lot of formatting headache ahead of us... (or I would, hehe)

=========
Section 1
=========

Thanks in advance!