45R (Forty-Five R) Style Design System (DESIGN.md, Japanese UI)

Design approach: A Japanese apparel brand founded by Yasumi Inoue in 1977, centered on indigo and indigo dyeing. The entire brand is built on a single typeface, A1 Gothic (Morisawa), using the brand color #1c2940 (indigo / ai) for all CTAs and text. It conveys the sincere, gentle modern-Japanese worldview of an indigo-dyeing workshop - Density: Hero headings are extremely large at 50–60px, with tight tracking of letter-spacing -1.5 to -1.8px to create visual weight. Body text is 14–20px with 1.6 line-height to preserve readability - Keywords: indigo dyeing, indigo #1c2940, A1 Gothic, Morisawa,