Square Enix Style Design System (DESIGN.md, Japanese UI)

Design policy: A weighty dark theme based on black. The site is designed to function as a "black frame" that enhances the worldview of games. Red CTA buttons provide strong gaze guidance against the black background - Density: High information density. A portal type that consolidates news, game titles, products, and schedules onto a single page - Keywords: Dark, sharp, rectangular, gaming, portal - Characteristics: border-radius is 0px on all elements. A sharp, angular design that uses no rounded corners whatsoever. A legacy configuration that does not use CSS Custom Properties. A three-layer