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

Design policy: Minimal, whitespace-rich, gallery-like editorial design. Built on black wordmark/navigation on a white ground, combined with hand-drawn-style illustrations and ultralight-weight (100–300) typography, creating a quiet, authorial tone. - About graf: graf (decorative mode no.3 design products Inc.) is a long-established Osaka creative collective. Because they work across furniture, products, food, design, and architecture, the site itself is structured like a genre-agnostic "collected works / portfolio." - Density: Generous whitespace, no cramming of content. Body line-height is ve