KANEKO OPTICAL Style Design System (DESIGN.md, Japanese UI)

Design policy: A single point on a black ground—place only the eyewear. The top page is full-screen pure black, with only a product photo and the serif logotype "KANEKO OPTICAL / ESTABLISHED 1958" in the center. It holds no ornamentation or surface color, conveying the quietness of "a tool of handwork" through generous whitespace and wide letter-spacing - About Kaneko Optical: In the eyewear-producing region of Sabae, the company keeps artisans in-house and handles everything from planning to manufacturing and sales consistently. The brand site is not EC but centers on the brand's narrative (S