Okay, that's confusing. Presumably there's a pure, un-accented version of Spanish (which is neither from Mexico nor from Spain), but it doesn't come to mind...

Of course, it's different in German (and French) where a particular version has been imposed as the standard pronunciation (and spelling) throughout the countries... Even though, from my understanding, outside of certain areas and professions people at least at home speak with a regional accent (if not in a dialect), and switch to a more standard pronunciation when in a more official setting.

That's weird, though. I mean, I kind of live in a monolingual culture (which heavily relies on English borrowings but mostly doesn't use the language beyond that)... Well, apart from immigrants, to be fair... But a situation where there's one accent that I use in some situations and another - in different situations, that's a very... foreign idea. I suppose the same for you?