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

Design policy: A stoic, clean design that conveys the pride of a long-established brand. A gallery-style layout that eliminates decoration and makes the shoes themselves stand out - Density: A relaxed card grid. Product visuals are shown large, with minimal text information - Keywords: Stoic, cool, monochrome, heritage, gallery - Characteristics: A typographic design unusual for a Japanese brand, placing Open Sans as the priority for Latin text. The brand color (blue #003b90) is not exposed anywhere other than the logo, and the UI is unified in a monochrome grayscale. CTAs use a straight, unro