Spacing
6/12/24/48/72px — spring rhythm
Typography
1.5 ratio · light — Airy, soft
Motion
350ms ease · opacity-first, gentle
Style
Sakura season — soft pinks and greens, no harsh contrast. Gradients allowed if subtle.
CSS variables
:root { --shizen-bg: #FFF5F7; --shizen-accent: #E8B4BC; --shizen-leaf: #7A9B76; }