:root{--ch-bg:#f6f9ff;--ch-surface:#fff;--ch-ink:#0f1b4d;--ch-muted:#4d5a8a;--ch-line:#d6e1ff;--ch-brand:#2f5bff;--ch-accent:#ffb400;--ch-accent-ink:#2a1c00;--ch-soft:#e3ebff;--ch-pop:#ff3d81}