niko and... Style Design System (DESIGN.md, Japanese UI)

Design policy: An editorial magazine style based on monochrome (black × white). Seasonal campaign colors (coral #dc5c5b, teal #5ec6c5, etc.) are splashed across hero areas and section backgrounds to create the freshness of a fashion magazine - Density: The base font size is an extremely small 10px, and navigation and dates are also around 12px. A compact, high-density magazine layout. Japanese body text (within articles) is 12–14px with line-height 1.71–1.75, which is standard line spacing for Japanese - Keywords: editorial, magazine, playful, monochrome + seasonal colors, emoji navigation, ry