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

Design policy: A relaxed editorial set on a paper-like cream (#f7f7e8) base with pure black text and hairline rules. Photography and whitespace take center stage, and the UI strips away decoration. The "multicolor index" that assigns one pastel chip color per article category is the brand's signature - Density: Low density. Small text (13–17px baseline) placed with wide line spacing, dividing regions not by surfaces but by whitespace, rules, and pale chip colors - Keywords: cream base / editorial / bilingual / craft / pastel index / slow - Shape language: Surfaces, tags, and input fields are a