What is the maintenance margin in deribit?

Could you please elaborate on the concept of maintenance margin in the context of Deribit? As a trader, it's essential to understand the role this term plays in ensuring the financial stability of my positions. How does it differ from the initial margin, and what happens if my account falls below this threshold? Additionally, are there any specific conditions or rules I should be aware of when trading on Deribit that relate to maintenance margins?