:root{
  --bg:#060814;
  --panel:#0b0f26;
  --text:#e9eefc;
  --muted:#9aa7d9;
  --accent:#ffd24a;
  --danger:#ff5470;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: radial-gradient(1000px 700px at 50% 30%, #0e163d 0%, var(--bg) 55%, #02030a 100%);
  color:var(--text);
  font:14px/1.35 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}
#wrap{
  max-width: 1020px;
  margin: 18px auto;
  padding: 14px;
}
header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
  margin-bottom:10px;
}
h1{
  margin:0;
  font-size:20px;
  letter-spacing:0.4px;
  font-weight:700;
}
.hud{
  display:flex;
  gap:14px;
  padding:10px 12px;
  background: color-mix(in oklab, var(--panel) 70%, black 30%);
  border:1px solid rgba(255,255,255,.08);
  border-radius:10px;
}
.hud .k{color:var(--muted); margin-right:6px}
canvas{
  width:100%;
  height:auto;
  background: linear-gradient(180deg, rgba(0,0,0,.18), rgba(0,0,0,.45));
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  display:block;
}
footer{
  margin-top:10px;
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
  color:var(--muted);
}
.help{display:flex; flex-wrap:wrap; gap:12px}
.msg{
  min-height: 20px;
  text-align:right;
  max-width: 48ch;
}
.msg b{color:var(--text)}