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

Design policy: Clean, modern design that makes good use of whitespace. While emphasizing the readability of technical articles, it gives a simpler and more refined impression than Qiita - Density: Generous line spacing with body line-height: 1.8. Article pages use a layout that prioritizes the reading experience above all - Keywords: Clean, modern, technical, readable, blue accent - Characteristics: Uses rgba(0,0,0,0.82) for text color (slightly lighter than Qiita's 0.87). CSS Custom Properties are not used; values are specified directly. palt is normal (not applied). As a competing service to