:root{
  --bg:#06060f; --panel:#0d0e1c; --panel2:#14162e;
  --text:#cdd3e6; --dim:#7a8099; --accent:#4fd8eb; --accent2:#a78bfa; --warn:#fbbf24;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,sans-serif;padding:18px 20px}
header,main,footer{max-width:1680px;margin-inline:auto}
header{text-align:center}
header h1{font-size:24px;letter-spacing:.4em;color:#fff;font-weight:700}
header p{color:var(--dim);margin-top:2px;font-size:14px}
.modes{display:flex;justify-content:center;gap:8px;margin-top:10px}
.mode-btn{background:var(--panel2);border:1px solid #26294d;color:var(--text);border-radius:8px;
  padding:7px 16px;font-size:13px;cursor:pointer;letter-spacing:.08em;text-transform:uppercase}
.mode-btn:hover{border-color:var(--accent)}
.mode-btn.on{border-color:var(--accent);color:var(--accent)}
.lab-only{display:none}
body.mode-lab .lab-only{display:block}
body.mode-lab .instrument-only{display:none !important}
body.mode-lab #labRight .hear{display:flex}
main{
  display:grid;
  grid-template-columns:270px minmax(380px,1fr) 300px;
  grid-template-areas:"left viz right";
  gap:14px;margin-top:16px;align-items:start;
}
.panel-left{grid-area:left}
.canvases{grid-area:viz}
.panel-right{grid-area:right}
@media(max-width:1100px){
  main{grid-template-columns:1fr;grid-template-areas:"viz" "right" "left"}
}
@media(max-width:900px){
  body{padding:12px 10px max(88px, env(safe-area-inset-bottom))}
  header h1{font-size:18px;letter-spacing:.28em}
  #playBtn{
    position:fixed;left:10px;right:10px;bottom:max(10px, env(safe-area-inset-bottom));
    z-index:20;min-height:48px;padding:14px;width:auto;
    box-shadow:0 -10px 28px #06060f;
  }
  .panel{padding-bottom:24px}
}
.canvases{display:flex;flex-direction:column;gap:8px;min-width:0}
.live-bar{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-top:4px}
.panel-left .chip{flex:1 1 100%;min-width:0}
.view{min-width:0}
.view-tag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);
  display:flex;align-items:center;gap:8px;margin:0 2px 6px}
.pill{display:none;letter-spacing:.1em;font-size:10px;color:var(--accent);border:1px solid var(--accent);
  border-radius:999px;padding:1px 8px}
.pill.gold{color:var(--warn);border-color:var(--warn)}
.pill.on{display:inline}
.view.live canvas{border-color:var(--accent)}
.view.live-real canvas{border-color:var(--warn)}
#timelineView canvas{border-radius:0}
#timelineView #strip,#timelineView #realstrip{border-radius:12px 12px 0 0;border-bottom:none}
#timelineView #spec{border-radius:0 0 12px 12px;border-top:none}
.strip-hint{font-size:11px;color:var(--dim);text-align:center;margin-top:6px}
canvas{display:block;width:100%;border-radius:12px;background:#05050d;border:1px solid #1c1e38}
#strip,#realstrip,#spec{cursor:pointer;touch-action:none}
.now-playing{font-size:13px;color:var(--accent);text-align:center;margin:8px 0 2px;min-height:1.3em}
.hear{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}
.hear-k{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.hear-btn{flex:1;background:var(--panel2);border:1px solid #26294d;color:var(--text);border-radius:8px;
  padding:7px 10px;font-size:12.5px;cursor:pointer;transition:border-color .15s}
.hear-btn:hover{border-color:var(--accent)}
.hear-btn.on{border-color:var(--accent);color:var(--accent)}
.mini.on{border-color:var(--accent);color:var(--accent)}
.mini:disabled{opacity:.4;cursor:not-allowed}
.panel{background:var(--panel);border:1px solid #1c1e38;border-radius:12px;padding:16px}
.panel h2{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin:14px 0 8px}
.panel h2:first-child{margin-top:0}
#playBtn{width:100%;padding:12px;font-size:17px;font-weight:700;letter-spacing:.12em;border:none;border-radius:10px;
  background:linear-gradient(90deg,#155e75,#0e7490);color:#e0fbff;cursor:pointer;transition:filter .15s}
#playBtn:hover{filter:brightness(1.25)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{flex:1 1 calc(50% - 8px);min-width:140px;background:var(--panel2);border:1px solid #26294d;color:var(--text);
  border-radius:12px;padding:6px 12px;font-size:12.5px;cursor:pointer;transition:border-color .15s,color .15s;text-align:left}
.chip:hover{border-color:var(--accent)}
.chip.on{border-color:var(--accent);color:var(--accent)}
.chip small{color:var(--dim);display:block;font-size:10.5px}
.chip.on small{color:var(--accent)}
.slider-row{display:grid;grid-template-columns:minmax(78px,auto) 1fr 62px;align-items:center;gap:8px;margin:7px 0}
.slider-row label{font-size:13px;color:var(--text)}
.slider-row output{font-size:13px;color:var(--accent);text-align:right;font-variant-numeric:tabular-nums}
.slider-row.off{opacity:.4}
.slider-row.off input{pointer-events:none}
input[type=range]{accent-color:var(--accent);width:100%;min-height:28px;touch-action:manipulation}
.btn-row{display:flex;gap:8px;margin-top:10px}
.chk{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--dim);margin-top:9px;cursor:pointer}
.chk input{accent-color:var(--accent)}
.mini{flex:1;background:var(--panel2);border:1px solid #26294d;color:var(--text);border-radius:8px;
  padding:7px 10px;font-size:12.5px;cursor:pointer;transition:border-color .15s}
.mini:hover{border-color:var(--accent)}
.readouts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.ro{background:var(--panel2);border-radius:8px;padding:8px 10px}
.ro .k{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.ro .v{font-size:16px;color:#fff;font-variant-numeric:tabular-nums;margin-top:1px}
.ro .v small{font-size:11px;color:var(--dim)}
.ro .hint{font-size:10.5px;color:var(--dim);margin-top:3px;line-height:1.35}
.ro.live .v{color:var(--accent)}
.slider-note{grid-column:1/-1;font-size:11px;color:var(--dim);margin:-4px 0 6px;line-height:1.4}
#hint{margin-top:10px;font-size:13px;color:var(--warn);min-height:18px}
.story{background:var(--panel);border:1px solid #1c1e38;border-radius:12px;padding:16px;margin-top:6px}
.story h2{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin:14px 0 8px}
.story h2:first-child{margin-top:0}
.story .slider-note{margin:0}
.story a{color:var(--accent)}
.edu p{font-size:13px;color:var(--text);margin:7px 0}
.edu b{color:var(--accent)}
.edu .accent2{color:var(--accent2)}
.lab-steps{margin:8px 0 10px 18px}
.lab-steps li{margin:7px 0;font-size:13px;color:var(--text);padding:4px 6px 4px 4px;border-radius:6px}
.lab-steps li.on{background:#14162e;color:var(--accent);outline:1px solid #2a3160}
.lab-steps b{color:var(--accent)}
.lab-banner{background:var(--panel2);border:1px solid var(--warn);color:var(--warn);border-radius:10px;padding:10px 12px;font-size:13px;line-height:1.45}
#labHintBox p{margin:0 0 6px}
#labHintBox p:last-child{margin:0}
body.mode-lab .slider-row.lab-key label{color:var(--accent)}
#labLeft .ro:first-child{grid-column:1/-1}
#labRight .btn-row{margin-top:8px;flex-shrink:0}
.lab-msg{
  margin:10px 0 0;
  padding:8px 10px;
  background:var(--panel2);
  border-radius:8px;
  font-size:12px;
  line-height:1.45;
  color:var(--text);
  overflow-wrap:anywhere;
}
#labHintBox.lab-msg{border:1px solid var(--accent)}
#labTruth.lab-truth{border:1px solid var(--warn);color:var(--warn)}
#labTruth p{margin:0 0 4px}
#labTruth p:last-child{margin:0}
footer{margin-top:16px;color:var(--dim);font-size:12px;text-align:left;max-width:900px}
footer .footer-lead{text-align:center;margin-bottom:14px}
footer h2{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin:14px 0 8px}
footer p{margin:8px 0}
footer a{color:var(--accent)}
footer ul{margin:6px 0 10px 18px}
footer li{margin:4px 0}
footer .ack{font-size:11px;line-height:1.5}
@media(max-width:600px){
  .slider-row{grid-template-columns:1fr auto;gap:4px 10px;margin:10px 0}
  .slider-row label{grid-column:1/2}
  .slider-row output{grid-column:2/3}
  .slider-row input{grid-column:1/-1;min-height:32px}
  .chip{min-width:0;font-size:12px;padding:8px 10px}
  .hear-btn{min-height:40px}
  .mini{min-height:40px}
}