zlacker

Everything you just said - these form inputs aren't related to a form, and assistive technology won't have any clue about the clever CSS selector hacks and what their effects are.

If you want to build something that's nice for humans and machines, look up best practices for this sort of thing - plenty of information is widely available on how to build things in usable and accessible ways (and it's simpler to do it correctly than to use these 'hack'-like workarounds anyway!)