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

Design policy: Ascetic luxury. By stripping away ornament and expressing "quality" and "quietness" solely through the thin strokes of a serif typeface, achromatic colors, and generous line spacing. It does not exaggerate the sparkle of jewelry on the web, but lets the whitespace and product photography speak - About HASUNA: Ethical jewelry. Placing material traceability and consideration for makers at the core of its philosophy, it embodies that sincerity on the web as well through a disciplined grey-based palette that avoids excessive decoration - Density: Low density. Large full-width produc