Imagine you are the Chief Risk Officer (CRO) of a large, global financial institution. You are tasked with designing a comprehensive stress testing framework to assess the firm's resilience under extreme market scenarios. Walk me through your methodology.

作为一家大型全球性金融机构的首席风险官（CRO），你需要设计一个全面的压力测试框架来评估极端市场情景下的机构韧性。请阐述你的方法论。