:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:#0b57d0;text-decoration:none}a:hover{color:#0a46a0;text-decoration:underline}body{margin:0;min-width:320px;min-height:100vh}h1{font-size:1.8rem;margin:0 0 12px}button{border:1px solid #ddd;background:#f9f9f9;padding:6px 12px;border-radius:6px;cursor:pointer}button:hover{background:#f3f3f3;border-color:#cfcfcf}button:focus{outline:2px solid #9ec1ff;outline-offset:1px}table{border-collapse:collapse}td,th{padding:6px 10px;border:1px solid #ddd}form{margin-bottom:12px}label{margin-right:8px;display:inline-block}#root{max-width:1200px;margin:0 auto;padding:16px}nav a{margin-right:10px}