:root { color-scheme: dark; --bg:#0b1418; --fg:#d7e6ea; --dim:#7f9aa3; --acc:#3fc1c9; --line:#1f3640; }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:15px/1.45 system-ui, sans-serif; }
main { max-width:1200px; margin:0 auto; padding:24px; }
.eyebrow { margin:0; color:var(--acc); text-transform:uppercase; letter-spacing:.12em; font-size:12px; }
h1 { margin:.1em 0 .2em; } h2 { font-size:16px; margin:0 0 8px; } small { color:var(--dim); font-weight:400; }
.lede { color:var(--dim); max-width:70ch; }
.bar { display:flex; flex-wrap:wrap; gap:12px 16px; align-items:center; padding:12px 0; border-block:1px solid var(--line); margin-bottom:16px; }
button, select { background:#10242b; color:var(--fg); border:1px solid var(--line); padding:6px 14px; border-radius:4px; font:inherit; }
button:hover { border-color:var(--acc); } button:disabled { opacity:.4; }
#status { color:var(--dim); }
.cols { display:grid; grid-template-columns:minmax(280px,1fr) minmax(320px,1.4fr); gap:24px; }
@media (max-width:800px) { .cols { grid-template-columns:1fr; } }
.controls { display:grid; gap:6px; max-height:70vh; overflow:auto; padding-right:8px; }
.controls .row { display:grid; grid-template-columns:minmax(0,1fr) 120px 58px; gap:8px; align-items:center; }
.controls .grp { color:var(--dim); font-size:12px; margin-top:8px; }
.controls label { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.controls output { text-align:right; color:var(--acc); font-variant-numeric:tabular-nums; }
textarea { width:100%; height:62vh; background:#071013; color:#bcd3d8; border:1px solid var(--line); border-radius:4px; font:12px/1.4 ui-monospace, monospace; padding:8px; resize:vertical; }