jakevdp/PythonDataScienceHandbook ? reverse-engineered prompt

Build me a simple, polished website that presents a Python data science handbook as an online learning resource.

I want people to be able to browse the chapters easily, open the lessons as Jupyter notebooks, and follow along with examples for things like NumPy, pandas, Matplotlib, and scikit learn. Make it feel like a real book companion site, with a clear home page, an index of sections, chapter pages, and easy links to run the notebooks online if possible. Include the code examples, plots, and any small helper pages needed to make the book easy to read and use.

Keep the design clean and readable, focused on learning rather than looking flashy. If you need current details about notebook sharing or embedding options, look them up online. Please set it up so the content is organized, easy to navigate, and ready for someone to explore the full handbook from the browser.