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

Design policy: A job-listing UI with high information density, built from a single blue and a 10-step grey scale. A complete design system called --fcds-* (192 tokens) holds all colors, sizes, line heights, spacing, and corner radii - Density: High. Job cards, tags, salaries, and filters are packed tightly together. 531 visible text elements per page - Keywords: FCDS, bold by default, zero letter-spacing, 4px corner radius, pill-shaped tags