I used wrong(technically) signature on my first job offer letter. Did I messed up ?

I think Messed up with my first job offers. Need help.

I am sorry if the post is nit relevant with this subreddit mods can remove if that's the case.

I got the offer letter from the company which I signed.

But now the problem is I 2 have different signature, one for my Bank Account (which is on the PAN card as well). and other for general purpose (like signing on Exam hall ticket etc). and I used the general sign on offer letter 🥲 (I know its very stupid and big mistake).

Joining is in june, where they have asked for PAN card.

What Should I do Now ?