*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,sans-serif;background:#0f1117;color:#e2e8f0;min-height:100vh;display:flex;align-items:center;justify-content:center}#app{width:100%;max-width:900px;padding:2rem}.grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem}.chart-card{aspect-ratio:1}