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

Design policy: A functional, information-dense UI based on monochrome, with the brand accent red #e60012 used as a highlight color. Despite being in the active outdoor/hiking domain, the design is restrained in decoration and focused on practicality - Density: Body text line-height 1.5, letter-spacing normal. Designed to efficiently display large amounts of information such as activity logs and mountain data - Keywords: Monochrome, functional, pill CTA, Hiragino Gothic, outdoor/community - Characteristics: - Hiragino Kaku Gothic ProN / Hiragino Sans are given top priority for Japanese fonts. N