CONCENT, Inc. Style Design System (DESIGN.md, Japanese UI)

Design policy: A black printed surface and white paper. A white-outlined CONCENT logo is placed on the solid black block at the upper left, and navigation is arranged along a pale blue-gray band extending to the right. The composition is a magazine masthead transferred directly to the web, using no rounded corners, no shadows, and no gradients whatsoever. - About CONCENT: This is a design company's corporate site, with cases (Works) and knowledge (Hiraku Design) as the main content. Because there is a large amount of reading material, body line-height is set generously at 1.8, and UD typefaces