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

Design policy: A clean corporate site based on white. MIXI Red #e5004d is used as an accent, and a full-width hero image carousel conveys the energy of the business. A minimal composition with generous whitespace - Density: Information density is low. Large visuals and ample whitespace create a relaxed impression. Body text line-height: 1.86 is a wide line spacing for Japanese - Keywords: minimal, corporate, red accent, full-width visuals, whitespace - Characteristics: MIXI Red #e5004d is used only as an accent for banners and badges. CTA buttons have a black background. Floating card-style he