Niannian 商业 网站：Build, repair, and evolve the Niannian AI websites around their real user paths. Use for ai.cauai.fun main-site workbench, studio, Nomi canvas, projects, brand, and approved surfaces; use for dh.cauai.fun login, TZB, projects, materials, templates, six-step workbench, video delivery, pricing, and billing. Keep the two product boundaries separate.
