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

Design policy: A practicality-focused EC marketplace that places a blue #0264bf login button and an orange #e7560d signup CTA side by side on a white background. Pink #e4007e recommendation badges are placed in large numbers on product cards, reinforcing the purchasing funnel - Density: The font size baseline is 14px with line-height 1.5, making it compact. EC-style information density that lists many categories of printing products via dense navigation with a sidebar + mega menu - Keywords: Practical EC, compact density, 3-color accents (blue/orange/pink), a solid stack of Roboto + Hiragino,