Bijutsu Techo (BT) Style Design System (DESIGN.md, Japanese UI)

Design policy: A two-layer structure typical of art media, using Mincho display headings to convey cultural and editorial prestige, and gothic body text to handle high information density. With white ground, near-black, and grayscale as the base, only the paid membership (PREMIUM) pathways are symbolized with gold #c2a47e - About Bijutsu Techo: A specialist media outlet covering contemporary art exhibitions, news, and criticism. It also holds the archive of the magazine "Bijutsu Techo," translating print editorial culture into a high-density web grid - Density: Medium to high density. Exhibiti