Raougah/Fih-Portal ? reverse-engineered prompt

Build me a clean little study notes website for my school stuff, something like a personal portal where I can organize and read notes easily.

I want it to feel simple and nice to use, with pages for different subjects, easy navigation, search if possible, and a layout that makes the notes feel like a real knowledge base instead of a messy folder. It should work well with markdown content so I can keep adding notes over time.

Please make the design polished and readable, and keep it easy to maintain so I can update the content without much effort. If anything needs a quick check with the latest docs, look it up online and keep it modern.