Is Rocket Pool non custodial?

Could you please clarify whether Rocket Pool operates in a non-custodial manner? I'm interested in understanding how it handles user funds and whether it maintains possession or control of them in any way. Additionally, it would be helpful to know if Rocket Pool provides any assurances or guarantees regarding the security of users' assets. Could you elaborate on this aspect? I'm also curious about the overall transparency and trustworthiness of Rocket Pool's operations, particularly in terms of its commitment to protecting users' privacy and ensuring the integrity of their financial transactions. Thank you for your assistance in clarifying these points.