:root{
  --bg:#0b1020;
  --card:#131a33;
  --text:#e9ecf6;
  --muted:#aab3d1;
  --accent:#7aa2ff;
  --border:#24305a;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, #15214a, var(--bg));
  color:var(--text);
}
header, footer{
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px;
}
header h1{margin:0 0 4px 0; font-size: 20px}
.sub{margin:0;color:var(--muted)}
main{max-width:1200px;margin:0 auto;padding:0 16px 32px 16px}
.card{
  background: color-mix(in oklab, var(--card) 92%, black);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 14px;
  margin: 14px 0;
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
}
.grid{display:grid; grid-template-columns: 360px 1fr; gap: 14px; align-items:start}
@media (max-width: 960px){ .grid{grid-template-columns:1fr;} }
.controls .row{display:grid; grid-template-columns: 1fr 140px; gap: 10px; align-items:center; margin: 8px 0;}
.controls label{color:var(--muted); font-size: 13px;}
.controls input[type="number"]{
  width: 140px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0e1430;
  color: var(--text);
}
.controls input[type="range"]{width:100%}
.controls input[type="checkbox"]{width:18px;height:18px; justify-self:end}
.controls hr{border:0;border-top:1px solid var(--border); margin: 10px 0}
button{
  margin-top: 10px;
  width:100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0f1a44;
  color: var(--text);
  cursor: pointer;
}
button:hover{border-color: color-mix(in oklab, var(--accent) 60%, var(--border));}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;}
.eq{padding: 8px 10px; border:1px dashed var(--border); border-radius:10px; overflow:auto;}
.plots{display:grid; grid-template-columns: 1fr; gap: 12px;}
.plot{width:100%; min-height: 360px;}
footer a{color:var(--accent); text-decoration:none}
footer a:hover{text-decoration:underline}