twbs/ratchet ? reverse-engineered prompt

Build me a lightweight mobile UI kit that helps me put together app like websites with plain HTML, CSS, and a little JavaScript. I want ready to use components like navigation bars, buttons, lists, forms, tabs, and page transitions, so I can quickly make a working prototype that feels good on a phone. Please include a simple documentation site with examples I can browse locally, plus a clean way to use the compiled CSS, JavaScript, and icon fonts right away. It would be great to have separate iPhone and Android styled themes too. Make it easy to test in a browser, but keep in mind it should work best on touch devices. If you need to check current setup details, look up the docs online and match the project’s existing style.