21_21 DESIGN SIGHT Style Design System (DESIGN.md, Japanese UI)

Design approach: A museum-grade editorial UI built on pure white #ffffff, with cyan blue #0090df deployed boldly as the brand primary color. The contrast between the exposed-concrete whiteness of Tadao Ando's architecture and the blue reminiscent of Issey Miyake's brand color - Density: Information density is medium-to-high. Text elements such as exhibition info, news, and schedules are set in bold weight 600, giving headings a strong presence - Keywords: Pure white × cyan blue #0090df, accent orange #ff9900 "NEW" badge, Noto Sans Japanese weight 600 headings + weight 400 body contrast, letter