Sarutahiko Coffee Style Design System (DESIGN.md, Japanese UI)

Design policy: Warm, craft-oriented. The combination of coffee brown and soft blue balances the calm of a specialty shop with casual approachability - Density: Standard grid density for an e-commerce site. Product cards are tightly spaced at 8px (desktop) / 4px (mobile), but sections have ample whitespace - Keywords: craft, coffee brown, soft blue, Shopify EC, Zen Kaku Gothic New, warmth - Characteristics: - Uses Zen Kaku Gothic New (the Google Fonts equivalent, ZenKakuGothicNew-Regular) for Japanese text. A soft gothic typeface with rounded corners that conveys the warmth of handcraft - Uses