:root{--color-primary:#2196f3;--color-success:#000000;--color-danger:#f44336;--color-warning:#ff9800;--color-text:#333;--color-text-secondary:#666;--color-bg:#f5f5f5;--color-card:#fff;--color-border:#e0e0e0;--radius-sm:4px;--radius-md:8px;--shadow-sm:0 1px 3px rgba(0,0,0,.1);--shadow-lg:0 2px 5px rgba(0,0,0,.1)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:14px;color:var(--color-text);background-color:var(--color-bg)}