:root{--color-bg:#f5f7fa;--color-surface:#ffffff;--color-text:#1a2433;--color-muted:#4f5d73;--color-border:#d7dee8;--color-accent:#0b5fff;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem}