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

Design policy: A readable design specialized for technical articles. Typesetting premised on the mixed setting of code and Japanese text - Density: Body text uses a relaxed line-height of 1.8. A high-information-density feed screen and a readability-focused article screen coexist - Keywords: Technical, clean, readable, code-friendly, for developers - Characteristics: YakuHanJPs (a punctuation half-width font) is placed at the head of the font-family. It renders punctuation (parentheses, commas, periods) at half-width, reducing the tightness of Japanese typesetting. Text color uses rgba(0,0,0,0