This time, I finished taking the Inflearn course [UI3 Update] Building a Design System with Figma Variables, and it was really useful because it contained much more practical, immediately applicable content than I expected! It didn't just explain features; it clearly showed how to efficiently manage variables by connecting them to actual components, and how structuring color or spacing tokens makes maintenance much easier later on. Setting up dark mode with variables also makes switching incredibly simple, so I immediately applied it to the system I'm currently working on. The course content itself might feel a bit fast for beginners, but if you've used Figma to some extent, I think it's definitely worth taking. It seems especially helpful if you manage design systems within a team or work in an environment with frequent designer-developer collaboration. To summarize, if you've only had a general grasp of variable implementation, I think this course can take you all the way to the stage where you can apply it in practice. Overall, I recommend it!