HIDA (Hida Sangyo) Style Design System (DESIGN.md, Japanese UI)

Design policy: A gallery type that is as unadorned as possible, composed only of white negative space and 1px thin rules. Furniture and forest photographs are the only color surfaces, and the UI side discards all color, shadow, and rounded corners - Density: Low density. The first view consists only of a full-screen photo slider and a transparent header, with almost no text placed on it - Keywords: Serene / shiraki (unpainted wood) / dignified / negative space / artisan-like - Shape language: All right angles (border-radius: 0). Rounded corners are used only for perfect circles (50%) such as s