What role does finite element analysis $($FEA$)$ play in civil engineering design and analysis? How does FEA work, and what are the key steps involved in conducting a finite element analysis for structural systems? Discuss the limitations and challenges associated with FEA, including issues related to model accuracy, computational resources, and interpretation of results. Additionally, explore recent advancements in FEA techniques and their potential implications for improving the accuracy and efficiency of structural analysis in civil engineering practice.