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

Design policy: Rather than white, lay an unbleached cream base (#f8f5ee) as the page background. On top of that, float white cards with rounded corners, and add accents with a single deep green. A design that brings the texture of paper and printed matter onto the screen - Density: As befits a bookstore, there are many elements, but generous spacing is kept between cards, and cream / mint / white are painted separately per surface to divide things visually - Keywords: unbleached, deep green, roundness, Bunkyu Gothic, paper goods