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

Design policy: Expresses the immediacy of "work right away in your spare time" and a pop, friendly feel through a large-area hero in Timee Yellow #ffd700 and pill CTAs in accent blue #007aff - Density: A spacious layout based on a hero plus cards. Line-height 1.5 ensures readability. Spacing between cards is also generous - Keywords: Timee Yellow, pop, pill CTA with box-shadow, immediacy, unified Noto Sans JP, aimed at younger audiences - Characteristics: - The brand color is #ffd700 (gold yellow). Defined as the CSS variable --yellow. Used across the entire hero section - The CTA is a pill bu