:root{color-scheme:dark}body{margin:0;background:#111c2f;color:#eaf2f5;font:17px/1.6 system-ui}header{position:sticky;top:0;padding:14px 20px;background:#162741;border-bottom:1px solid #39546b;z-index:1}header p{margin:4px 0;font-size:14px}main{max-width:760px;margin:auto;padding:24px}button{padding:12px 16px;border:0;border-radius:8px;background:#85dec4;color:#102439;font-weight:700;margin:4px 0}button:disabled{opacity:.5}section{min-height:55vh;padding:24px 0;border-bottom:1px solid #39546b}pre{white-space:pre-wrap;overflow-wrap:anywhere}#log{font-size:13px;padding:12px;background:#162741;max-height:180px;overflow:auto}