I feel like it's not a great look to say "I don't know enough about the role to give you my salary expectations at this point" while also asking "but what is the salary range for this position, given you don't know enough about me".

Any thoughts on how to approach that?

// Any thoughts on how to approach that?

This may sound quaint but I find that being forthcoming and asking the question you have works.

During the latest job search, I would just ask for a range and say myself that "obviously where I fall in the range depends on my candidacy, I won't hold you to it."

If they tell you the range is something like $120K to $150K, it tells you what kind of seniority they are looking for - whether they know it or not - and how much they value people of that profile. If they tell you it's like $150K to $750K - then you know they are really wide open to range of experience and impact. Someone may say that a $600K wide range is meaningless but I don't think it is. If you're more junior you can count on being towards the left but still know they can afford to give you a bit more if they like you, and if you're very senior you can recognize that they have room for someone like you and have an appetite to pay. You'd be totally self-unaware to go into the process hoping for $750 and then landing at $150 but that's more on you.

So I am fine asking for a broad range - it's way more meaningful than no range.

Their range is independent of you so just dont worry about it.

A range that spans 2-3 job levels is not useful at all except for telling me the company is completely unserious & should be avoided.

If your salary range for, say, a senior staff engineer includes what you should be paying seniors: you’re wasting everyone’s time.