SHINCHOSHA Style Design System (DESIGN.md, Japanese UI)

Design policy: Only three colors: black, white, and yellow. No rounded corners whatsoever (border-radius: 0), composed with rules and planes. A design faithful to bibliographic information, as if a publisher's catalog were put directly onto the web - Density: High. Book information (title, author, price, release date, format, ISBN) is packed into tables. On the other hand, book descriptions are set loosely at line-height: 2.13 - Keywords: Shinchosha Yellow, Yu Gothic, Mincho catchphrases, zero border-radius, catalog