CHOYA (Choya Umeshu) Style Design System (DESIGN.md, Japanese UI)

Design policy: Mincho-style headings and Gothic-style body text express the tradition and dignity of plum wine making. A restrained color scheme of white background with gray text (#666) creates a refined presentation that lets product photography take center stage - Density: A product showcase style with generous whitespace. Each product category is assigned an accent color to aid visual classification - Keywords: Mincho typeface, tradition, green, multi-color categories, ghost buttons - Characteristics: A two-typeface system of Noto Serif JP (headings) and Noto Sans JP (body text). Brand gre