Create a premium design system board for a fictional Japanese web design studio based on this theme [THEME] Playful Nordic-style design, Miyama Creative One large smartphone mockup must be placed at the exact center as the main visual. Arrange desktop UI and design system modules around the phone. Include hero section, palette, typography, cards, buttons, inputs, icons, chips, and footer. Make it a polished Figma showcase board with rounded panels, clean spacing, elegant whitespace, modern Japanese taste, and readable Japanese labels. Do not make it a numbered spec sheet or plain grid. Aspect ratio 4:5