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

Design policy: A clean e-commerce layout based on white. Against a neutral background that makes product photography stand out, Link Blue #0094c8 functions as a marker for navigation and actions. A design that suppresses decoration and draws the eye to the products themselves - Density: Body line-height is 2.0, extremely generous. Letter-spacing is also on the open side at 0.07em. A fairly relaxed typesetting for a Japanese e-commerce site, making long product descriptions and service information easy to read - Keywords: Clean white, link blue, geometric sans-serif, wide line spacing, product-