:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;padding:16px 16px 70px;background:#0b1018;color:#edf4ff;font:15px/1.6 system-ui}header,main{max-width:720px;margin:auto}h1{font-size:23px}h2{font-size:18px}section,article{padding:16px;margin:12px 0;background:#151e2b;border:1px solid #29394b;border-radius:14px}label{display:block;margin:12px 0}input,textarea,select,button{font:inherit;min-height:44px;border:1px solid #456;background:#0e1723;color:#edf4ff;border-radius:9px;padding:9px;max-width:100%}input,textarea{width:100%;display:block}input[type=checkbox]{width:auto;min-height:20px;display:inline}button{cursor:pointer;margin:4px}button:disabled{opacity:.5}small{color:#9bacc2}nav{display:flex;flex-wrap:wrap}nav button{flex:1}.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.value{font-size:28px;font-weight:bold}.stale{opacity:.55}canvas{width:100%;height:260px}#message{color:#ffcf7a;white-space:pre-wrap}textarea{min-height:80px}details{margin-top:14px}summary{min-height:44px;cursor:pointer}