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

Design philosophy: A camera and lens manufacturer that carries out integrated production in Aizu (Fukushima). It uses its own custom serif typeface, "Sigma Serif," across the board, expressing the precision and craftsmanship of an optical equipment maker through typography. A rare example of a tech company taking a serif-first approach. With a warm white background (#fefefd) and a dense editorial layout, it fuses product catalogs with reading material - Density: Editorial style. A magazine-like layout combining a large hero section (88px display), product cards, and feature articles. Body text