:root{
  --bg:#0f1115; --surface:#171a21; --surface2:#1f242d;
  --text:#e6e9ef; --muted:#9aa3b2; --line:#2a2f3a;
  --cdn:#378add; --ip:#1d9e75; --warn:#ef9f27;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  font-size:14px; line-height:1.5;
}
.bar{padding:16px 20px; border-bottom:1px solid var(--line); background:var(--surface)}
.bar h1{font-size:16px; font-weight:600; margin:0 0 12px}
.cfg{display:flex; flex-wrap:wrap; gap:12px; align-items:flex-end}
.cfg label{display:flex; flex-direction:column; gap:4px; font-size:12px; color:var(--muted)}
.cfg input{
  background:var(--surface2); border:1px solid var(--line); color:var(--text);
  border-radius:8px; padding:8px 10px; font-size:13px; min-width:320px;
}
.cfg label.lat input{min-width:90px}
.cfg select{
  background:var(--surface2); border:1px solid var(--line); color:var(--text);
  border-radius:8px; padding:8px 10px; font-size:13px; min-width:220px;
}
.regiontag{
  margin-left:6px; font-size:11px; font-weight:500; color:var(--ip);
  border:1px solid var(--line); border-radius:6px; padding:1px 7px;
}
.cfg label.chk{flex-direction:row; align-items:center; gap:6px; font-size:13px; color:var(--text); padding-bottom:8px}
.cfg label.chk input{min-width:0; width:16px; height:16px; cursor:pointer}
button{
  background:var(--cdn); color:#fff; border:0; border-radius:8px;
  padding:9px 16px; font-size:13px; font-weight:600; cursor:pointer;
}
button.ghost{background:transparent; border:1px solid var(--line); color:var(--text)}
.grid{display:grid; grid-template-columns:1fr 1fr; gap:16px; padding:16px 20px}
.panel{background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:14px; overflow:hidden}
.phead{display:flex; align-items:center; gap:8px; font-weight:600; margin-bottom:10px}
.dot{width:10px; height:10px; border-radius:50%}
.dot.cdn{background:var(--cdn)} .dot.ip{background:var(--ip)}
video{width:100%; aspect-ratio:16/9; background:#000; border-radius:8px; display:block}
.prow{margin-top:10px; display:flex; align-items:flex-start; gap:12px}
.mini{background:var(--surface2); border:1px solid var(--line); color:var(--text); border-radius:8px; padding:6px 12px; font-size:12px; font-weight:500; white-space:nowrap}
.metrics{display:grid; grid-template-columns:1fr 1fr; gap:6px 16px; font-size:12px; color:var(--muted); flex:1}
.metrics b{color:var(--text); font-weight:600}
.latgroup{padding:0 20px 16px}
.latgrouphead{font-size:13px; font-weight:600; color:var(--muted); margin-bottom:10px}
.latrow{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.latcard{background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:14px; text-align:center}
.latlabel{font-size:12px; color:var(--muted); margin-bottom:6px}
.latval{font-size:28px; font-weight:700; font-variant-numeric:tabular-nums}
.note{color:var(--muted); font-size:12px; padding:0 20px 28px; max-width:900px}
.note code{background:var(--surface2); padding:1px 6px; border-radius:5px}
.dbg{margin:0 20px 20px; background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:14px}
.dbghead{display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-bottom:10px}
.dbghead>span:first-child{font-size:13px; font-weight:600}
.dbghint{flex:1; min-width:240px; font-size:11px; color:var(--muted)}
.dbghint b{color:var(--text)} .dbghint i{color:var(--cdn); font-style:normal}
.dbgbtns{display:flex; gap:8px}
.dbglog{
  margin:0; max-height:280px; overflow:auto; background:#0b0d11; border:1px solid var(--line);
  border-radius:8px; padding:10px 12px; font-family:SFMono-Regular,Menlo,Consolas,monospace;
  font-size:11px; line-height:1.45; color:#cdd6e4; white-space:pre-wrap; word-break:break-word;
}
.dbglog:empty::before{content:"(enable Debug and Start to capture a trace)"; color:var(--muted)}
@media(max-width:860px){.grid{grid-template-columns:1fr}.latrow{grid-template-columns:1fr}}