hua1995116/react-resume-site ? reverse-engineered prompt

Build me a web app for making resumes with Markdown, something simple where I can focus on my content instead of formatting. I want to type my resume in a clean editor, see the finished layout update in real time, and export it as a PDF that looks exactly like the preview. It should support multiple minimalist resume templates, let the same content work across different designs, and try to fit everything neatly onto one page when possible.

I also want easy import and export for Markdown so I can move my resume in and out whenever I need. If possible, include a way to save my work online so I do not lose it, and let me adjust things like photo size and placement so the template does not feel too rigid. Make it polished and ready to use, and look up current docs online if you need to.