:root{--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-lg:1.25rem;--font-size-xl:1.5rem;--font-size-2xl:1.953rem;--font-size-3xl:2.441rem;--font-size-4xl:3.052rem;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-8:3rem;--space-10:4rem;--space-12:6rem;--radius-sm:0.375rem;--radius-md:0.625rem;--radius-lg:1rem;--radius-full:9999px;--status-green:#1f9d55;--status-amber:#d97706;--status-red:#dc2626;--status-neutral:#6b7280;--color-ink:#0b0f14;--color-muted:#5b6571;--color-line:#e4e7ec;--color-surface:#ffffff;--color-canvas:#f7f8fa;--color-brand:#0a84ff;--shadow-sm:0 1px 2px rgba(11,15,20,0.06);--shadow-md:0 4px 16px rgba(11,15,20,0.08);--shadow-lg:0 12px 40px rgba(11,15,20,0.12);--duration-fast:0.15s;--duration-base:0.25s;--duration-slow:0.4s;--ease-standard:cubic-bezier(0.2,0,0,1)}@media (prefers-reduced-motion:reduce){:root{--duration-fast:0s;--duration-base:0s;--duration-slow:0s}}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--color-ink);background:var(--color-canvas);font-size:var(--font-size-base);line-height:1.5;-webkit-font-smoothing:antialiased}