*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#f5f5f5;--color-surface:#ffffff;--color-border:#e2e8f0;--color-text:#1a202c;--color-text-muted:#718096;--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-primary-focus:rgba(59,130,246,0.3);--color-error:#e53e3e;--color-error-bg:#fff5f5;--color-error-border:#feb2b2;--color-success:#38a169;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,0.1),0 1px 2px rgba(0,0,0,0.06);--shadow-md:0 4px 6px rgba(0,0,0,0.07),0 2px 4px rgba(0,0,0,0.06)}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}