* docs(start): streamline getting started flow * docs(nav): reorganize start and install sections * docs(style): move custom css to style.css * docs(navigation): align zh-CN ordering * docs(navigation): localize zh-Hans labels
* Docs: refresh landing page * Docs: add landing page companion pages * Docs: drop legacy Jekyll assets * Docs: remove legacy terminal css test * Docs: restore terminal css assets * Docs: remove terminal css assets