:root{--ink:var(--text);--muted:var(--text-secondary);--line:var(--border)}
main{max-width:1460px;margin:auto;padding:26px 44px 20px}.intro{margin:21px 0 25px;display:flex;align-items:end;justify-content:space-between;gap:18px}.overline,.list-head{font-size:10px;font-weight:800;letter-spacing:.13em;color:var(--accent)}.intro .overline{display:flex;align-items:center;gap:8px}.intro .overline span{width:4px;height:4px;background:#81aaa7;border-radius:50%}h1{margin:4px 0;font-size:clamp(35px,4vw,53px);font-weight:780;line-height:1.05;letter-spacing:-.07em}.intro p{margin:10px 0 0;font-size:14px;color:var(--muted)}.facts{display:flex;gap:8px;flex-wrap:wrap}.facts span{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:650;border:1px solid var(--line);background:var(--surface);border-radius:9px;padding:8px 10px;white-space:nowrap}.facts svg{width:15px;height:15px;color:var(--accent)}
.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,345px);gap:16px;align-items:start}.player,.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow)}.stage{position:relative;height:clamp(360px,46vw,510px);background:var(--stage);isolation:isolate}.stage canvas,#scene{position:absolute;inset:0;width:100%;height:100%;touch-action:none}canvas{display:block;cursor:grab}canvas:active{cursor:grabbing}.scene-head,.scene-footer{pointer-events:none;position:absolute;left:18px;right:18px;display:flex;align-items:center;justify-content:space-between;gap:10px}.scene-head{top:16px}.live,#scene-step{background:#ffffffde;border:1px solid var(--border);border-radius:7px;padding:7px 9px;font-size:9px;letter-spacing:.1em;font-weight:800}.live{display:flex;align-items:center;gap:7px}.live i{background:var(--accent);width:6px;height:6px}.scene-footer{bottom:15px;font-size:11px;color:var(--muted)}.axis{font-weight:800;letter-spacing:2px;color:var(--muted)}.axis b{color:var(--accent)}.camera-tools{position:absolute;right:16px;top:65px;display:grid;gap:5px}.icon-button,.round{display:grid;place-items:center;width:38px;height:38px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:9px}.icon-button:hover,.round:hover,.secondary:hover{background:var(--surface-hover)}.picked{position:absolute;bottom:43px;left:18px;max-width:75%;padding:8px 12px;color:#fff;background:var(--action);border-radius:8px;font-size:12px;pointer-events:none}.scene-error{position:absolute;top:43%;inset-inline:15%;text-align:center;color:var(--ink);font-size:14px}
.transport{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:13px 15px}.playback{display:flex;gap:7px;align-items:center}.round{border-radius:50%}.round.play{width:44px;height:44px;background:var(--surface-subtle);border-color:var(--border);color:var(--ink)}.round.play:hover{background:var(--surface-hover)}.secondary{justify-self:start}.primary{justify-self:end}.primary svg,.secondary svg{width:15px;height:15px}.progress{height:4px;background:var(--surface-hover)}.progress div{background:var(--action);height:100%;width:0;transition:width .25s ease}
.tabs{display:grid;grid-template-columns:1fr 1fr;padding:0 15px;border-bottom:1px solid var(--line)}.tabs button{background:none;border:0;border-bottom:2px solid transparent;color:var(--muted);font-size:12px;font-weight:680;padding:15px 5px}.tabs button[aria-pressed=true]{color:var(--accent);border-color:var(--accent)}.current{padding:18px 17px 14px;border-bottom:1px solid var(--line)}h2{font-size:21px;line-height:1.14;letter-spacing:-.03em;margin:7px 0 8px}.current p{font-size:13px;line-height:1.52;margin:0;color:var(--muted)}.hardware{display:flex;flex-wrap:wrap;gap:5px;margin-top:10px}.hardware:empty{display:none}.hardware span{padding:4px 6px;border-radius:5px;background:var(--surface-subtle);color:var(--ink);font:650 10px ui-monospace,monospace}.manual-page{display:flex;align-items:center;gap:5px;color:var(--muted);font-size:11px;margin-top:12px}.manual-page svg{width:14px;height:14px}.list-head{display:flex;justify-content:space-between;align-items:center;color:var(--muted);padding:14px 16px 8px}.steps{margin:0;padding:0 9px 8px;max-height:300px;overflow:auto;list-style:none;scrollbar-width:thin}.steps button{display:flex;align-items:center;gap:9px;text-align:left;width:100%;background:var(--surface);border:1px solid transparent;border-bottom-color:var(--border);min-height:40px;border-radius:7px;color:var(--ink);font-weight:600;font-size:12px;padding:5px 7px}.steps button:hover{background:var(--surface-subtle)}.steps button[aria-current=step]{background:var(--accent-surface);border-color:var(--border);color:var(--accent)}.step-n{display:grid;place-items:center;min-width:23px;height:23px;border-radius:6px;background:var(--surface-subtle);color:var(--muted);font-size:10px;font-weight:800}.steps button[aria-current=step] .step-n{background:var(--accent);color:white}.steps button svg{margin-left:auto;width:14px;height:14px;color:var(--muted)}.parts-panel{padding:16px;max-height:510px;overflow:auto}.parts-panel h3{font-size:14px;margin:10px 0}.parts-panel dl{margin:0 0 18px}.parts-panel dt{font-size:12px;font-weight:750;margin-top:9px}.parts-panel dd{margin:3px 0;color:var(--muted);font-size:12px}.parts-panel p{color:var(--muted);font-size:12px;line-height:1.5}
footer{padding:13px 1px;display:flex;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted)}
@media(max-width:940px){main{padding-inline:24px}.workspace{grid-template-columns:minmax(0,1fr) minmax(260px,300px)}}
.touch-hint,.toggle-step-list{display:none}
@media(pointer:coarse){.pointer-hint{display:none}.touch-hint{display:inline}}
@media(max-width:720px), (pointer:coarse) and (max-height:500px) and (orientation:landscape){
  main{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
  .intro p{display:none}
  main{padding-top:0;padding-bottom:calc(78px + env(safe-area-inset-bottom))}
  .intro{margin:12px 0;align-items:end;flex-wrap:wrap;gap:8px}
  .intro .overline{font-size:9px}
  h1{margin:4px 0 0;font-size:clamp(27px,8vw,42px)}
  .facts{gap:4px}.facts span{font-size:10px;padding:5px 6px;gap:4px}.facts svg{width:13px;height:13px}
  .workspace{grid-template-columns:1fr;gap:10px}
  .stage{height:clamp(185px,40svh,400px)}
  .scene-footer,.scene-head{left:9px;right:9px}.scene-head{top:10px}
  .scene-footer{bottom:10px;font-size:10px}
  .camera-tools{right:8px;top:45px;gap:4px}
  .icon-button{width:var(--touch-target);height:var(--touch-target);background:#fffffff2}
  .player-controls{position:fixed;inset:auto 0 0;z-index:5;background:var(--surface);box-shadow:0 -5px 22px #00000016;padding-bottom:env(safe-area-inset-bottom)}
  .transport{max-width:520px;margin:0 auto;padding:9px max(10px,env(safe-area-inset-right)) 9px max(10px,env(safe-area-inset-left));gap:4px;grid-template-columns:auto 1fr auto}
  .primary,.secondary,.round{min-width:var(--touch-target);min-height:48px}
  .primary,.secondary{font-size:14px;padding:0 10px}
  .primary{min-width:95px}.secondary svg{width:19px;height:19px}
  .playback{justify-self:center;gap:4px}.round{width:44px;height:48px}.round.play{width:50px;height:50px}
  .progress{position:absolute;inset:0 0 auto}
  .tabs button{min-height:44px;padding:10px 4px;font-size:13px}
  .current{padding:13px 14px}
  h2{font-size:clamp(20px,5.6vw,26px)}
  .current p{font-size:15px;line-height:1.43}
  .hardware span{font-size:11px}
  .manual-page{margin-top:9px}
  .list-head{display:none}
  .toggle-step-list{display:flex;width:100%;min-height:48px;padding:0 14px;align-items:center;gap:8px;border:0;background:var(--surface);color:var(--accent);font-size:14px;font-weight:750;text-align:left}
  .toggle-step-list .step-chevron{margin-left:auto}
  .toggle-step-list[aria-expanded=true] .step-chevron{transform:rotate(90deg)}
  .toggle-step-list[aria-expanded=false]+.steps{display:none}
  .steps{max-height:320px}.steps button{min-height:48px;font-size:14px}
  footer{font-size:10px;padding-block:11px}
}
@media(max-width:420px){.secondary span{display:none}.secondary{padding:0 10px}}
@media(pointer:coarse) and (max-height:500px) and (orientation:landscape) and (min-width:600px){
  .header-inner{height:42px}.intro{margin:7px 0}.intro .overline{display:none}
  h1{margin:0;font-size:27px}
  .workspace{grid-template-columns:minmax(0,1.4fr) minmax(250px,1fr)}
  .stage{height:clamp(185px,calc(100svh - 158px - env(safe-area-inset-bottom)),300px)}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.manual-page a{text-decoration:underline;text-underline-offset:2px}

#suspended-note{display:block;margin-top:8px;font-size:12px}
.facts .guide-pdf {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid var(--accent);
  border-radius: 9px;
  background: var(--accent-surface);
  color: var(--accent);
  font-size: 12px;
}
.facts .guide-pdf[hidden] { display: none; }
.facts .guide-pdf:hover { background: var(--surface-hover); }

.guide-finishes {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
}
.guide-finishes > span { color: var(--muted); }
.guide-finishes button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 30px;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
.guide-finishes button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-surface);
}
.guide-finishes button span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--line);
}
.scene-callouts {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.scene-callouts > svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.scene-callouts line, .scene-callouts circle { stroke: var(--accent); stroke-width: 1.5px; }
.scene-callouts circle { fill: var(--surface); }
.scene-callout-labels {
  position: absolute;
  top: 53px;
  left: 9px;
  display: grid;
  justify-items: start;
  gap: 7px;
}
.scene-callout-labels span {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  border: 1px solid var(--accent);
  border-radius: 5px;
  background: var(--surface);
  color: var(--accent);
  font-size: 10px;
  font-weight: 750;
}
.scene-callout-labels svg {
  width: 20px;
  height: 20px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.step-tools { display: grid; gap: 5px; margin-top: 10px; font-size: 11px; }
.step-tools ul { display: flex; flex-wrap: wrap; gap: 5px; list-style: none; padding: 0; margin: 0; }
.step-tools li {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  padding: 4px 6px;
  border-radius: 6px;
  color: var(--ink);
}
.step-tools svg { width: 14px; height: 14px; }
.guide-finishes[hidden], .scene-callouts[hidden], .step-tools[hidden] { display: none; }