Light-City/CPlusPlusThings ? reverse-engineered prompt

Build me a clean C++ learning site or documentation project based on this repo, with a home page that introduces the idea of “C++那些事” and organizes the content into clear sections like basics, modern C++ features, practice exercises, design patterns, concurrency, STL internals, and useful tools.

I want it to feel friendly for beginners but still useful for people preparing for interviews or trying to get better at modern C++. Make the navigation simple, support both Chinese and English if possible, and make each topic easy to browse like a learning path. Include pages or sections for code examples and practical exercises, and make the project easy to run locally. If you need to check the best current docs or setup details, look them up online and follow whatever works best today.