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

Design policy: Practical, stoic EC design. High contrast black and white, sharp right-angle buttons, large product images at the center. A monotone base with decoration stripped away to the extreme - Density: A media-oriented layout that showcases product images large. Text information is kept to a minimum, with a composition that speaks through visuals - Keywords: Minimal, monotone, sharp, product-first, utilitarian