.transform-lab{--tl-bg:#edf2f8;--tl-ink:#26364a;--tl-line:#cbd6e3;--tl-accent:#315cb5;--tl-selected:#e3ebfb;--tl-muted:#617189;max-width:1540px}.tl-heading,.tl-study-heading{justify-content:space-between;align-items:center;gap:24px;margin:28px 0;display:flex}.tl-heading h1{letter-spacing:-.05em;margin:3px 0 8px;font-size:clamp(28px,3vw,42px)}.tl-heading p{color:var(--muted);margin:0}.transform-lab .tl-kicker{color:var(--tl-accent);font:11px var(--mono);letter-spacing:.12em;margin:0 0 8px}.transform-lab :is(button,select){border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);border-radius:7px;padding:8px 12px;font-size:13px}.transform-lab button:hover:not(:disabled){background:var(--mint)}.transform-lab button:disabled{opacity:.45;cursor:not-allowed}.transform-lab :is(button,input,select,summary):focus-visible{outline:3px solid var(--focus);outline-offset:2px}.transform-lab :is(h2,h3){letter-spacing:-.03em;margin:0}.transform-lab h2{font-size:20px}.transform-lab h3,.tl-panel h2{font-size:15px}.tl-lessons{flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 20px;font-size:12px;display:flex}.tl-lessons>span{color:var(--muted);margin-right:8px}.tl-lessons .text-link{padding:8px}.tl-workbench{border:1px solid var(--line);background:var(--surface);border-radius:12px;grid-template-columns:195px minmax(0,1fr) 290px;display:grid;overflow:hidden}.tl-panel{background:var(--surface);min-width:0;padding:20px}.tl-panel-heading{justify-content:space-between;align-items:center;gap:8px;margin-bottom:12px;display:flex}.tl-panel-heading>span{color:var(--muted);font-size:10px}.tl-help{color:var(--muted);margin:8px 0 14px;font-size:12px;line-height:1.8}.tl-mono,.tl-route,.tl-formula{font-family:var(--mono);overflow-wrap:anywhere;font-size:12px}.tl-formula{line-height:1.9}.tl-hierarchy{border-right:1px solid var(--line);padding:20px 12px}#frame-list,#link-list{max-height:260px;margin-bottom:16px;overflow:auto}#frame-list button,#link-list button,#chain-steps button{text-align:left;width:100%;font-family:var(--mono);border-color:#0000;justify-content:space-between;align-items:center;gap:8px;margin:3px 0;padding:7px 10px;font-size:12px;display:flex}#frame-list small{color:var(--muted);font-size:10px}#link-list button{font-size:11px}.transform-lab :is(#frame-list,#link-list,#chain-steps) button[aria-pressed=true]{border-color:var(--tl-accent);background:var(--tl-selected);color:var(--tl-accent)}.tl-tree-actions{gap:7px;margin-top:14px;display:grid}.tl-links-heading{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}.tl-stage-panel{background:var(--tl-bg);min-width:0;color:var(--tl-ink);flex-direction:column;display:flex}.tl-stage-toolbar{border-bottom:1px solid var(--tl-line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:12px;font-size:12px;display:flex}.tl-stage-toolbar label,.tl-camera{align-items:center;gap:6px;display:flex}.tl-stage-toolbar :is(button,select){color:var(--tl-ink);border-color:var(--tl-line);background:#f8faff;padding:8px;font-size:12px}.tl-stage-toolbar button[aria-pressed=true]{color:#fff;background:#315cb5}.tl-stage{flex:1;height:440px;min-height:400px;position:relative;overflow:hidden}#vtk-viewport,#frame-labels{position:absolute;inset:0}#vtk-viewport{touch-action:none}#vtk-viewport canvas{width:100%;height:100%;display:block}#frame-labels{pointer-events:none;overflow:hidden}#frame-labels button{pointer-events:auto;color:#344861;font:11px var(--mono);background:#f8faffeb;border:1px solid #b5c4d8;border-radius:6px;min-width:44px;min-height:44px;padding:3px 7px;position:absolute;transform:translate(-110%,6px)}#frame-labels[data-picking=true] button{pointer-events:none}#frame-labels button[aria-pressed=true]{color:#fff;background:#315cb5;border-color:#315cb5}.tl-point-label{color:#82500a;width:25px;height:25px;font:600 12px var(--mono);background:#fff5d9;border:1px solid #bb8832;border-radius:50%;place-items:center;display:grid;position:absolute;transform:translate(10px,-24px)}.tl-point-label[hidden]{display:none}.tl-axis-key{pointer-events:none;font:600 11px var(--mono);background:#edf2f8df;border-radius:5px;align-items:center;gap:12px;padding:7px;display:flex;position:absolute;bottom:16px;left:16px}#reference-label{color:var(--tl-muted);font-weight:400}.tl-x{color:#bf4256}.tl-y{color:#27835f}.tl-z{color:#3969c6}.tl-gold{color:#ad7317}.tl-stage-caption,.tl-guide-toggle{color:var(--tl-muted);border-top:1px solid var(--tl-line);flex-wrap:wrap;justify-content:space-between;gap:8px;margin:0;padding:12px;font-size:11px;display:flex}.tl-guide-toggle label{align-items:center;gap:6px;min-height:28px;display:flex}.tl-guide-toggle>span{align-self:center}.tl-loading{text-align:center;color:var(--tl-ink);z-index:2;background:#edf2f8ee;place-content:center;padding:30px;font-size:13px;display:grid;position:absolute;inset:0}.tl-loading[hidden]{display:none}.tl-point-panel{border-left:1px solid var(--line)}.tl-field{gap:6px;margin-bottom:12px;font-size:12px;display:grid}.tl-field select{width:100%;min-width:0}.transform-lab fieldset{border:0;min-width:0;margin:20px 0 0;padding:0}.transform-lab legend,.tl-legend{width:100%;margin-bottom:9px;padding:0;font-size:12px}.transform-lab legend small,.tl-legend small{color:var(--muted);margin-left:6px;font-size:10px}.tl-legend{margin-top:18px}.tl-vector-inputs{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.tl-vector-inputs label{font:11px var(--mono);gap:5px;display:grid}.transform-lab input[type=number]{border:1px solid var(--line);background:var(--paper);width:100%;min-width:0;min-height:44px;color:var(--ink);font:12px var(--mono);border-radius:5px;padding:8px 5px}.transform-lab input:disabled{opacity:.55}.tl-error{color:#b34151;margin:9px 0;font-size:12px}.tl-error:empty{margin:0}#zero-pose,#apply-point{width:100%;margin-top:12px}#apply-point{margin-bottom:16px}.tl-status{color:var(--muted);min-height:55px;margin:0;padding:16px 4px 20px;font-size:12px}.tl-point{font:13px var(--mono);background:var(--mint);overflow-wrap:anywhere;border-radius:5px;padding:12px;line-height:1.8}.tl-readings-wrap{max-height:370px;overflow:auto}.tl-readings{border-collapse:collapse;width:100%;font:11px var(--mono);text-align:right}.tl-readings caption{text-align:left;font:12px var(--sans);padding:4px 0 10px}.tl-readings th{font-weight:400}.tl-readings :is(td,th){border-bottom:1px solid var(--line);padding:3px}.tl-readings td{overflow-wrap:anywhere;max-width:70px}.tl-readings tr[data-active=true]{background:var(--tl-selected)}.tl-readings th button{font:11px var(--mono);background:0 0;border:0;padding:5px}.tl-study-heading{align-items:flex-end;margin:28px 0 16px}.tl-study-heading>p{max-width:60%;margin:0}.tl-chain-layout{border:1px solid var(--line);border-radius:10px;grid-template-columns:300px minmax(0,1fr);display:grid;overflow:hidden}.tl-step-panel{border-right:1px solid var(--line)}#chain-steps{max-height:500px;margin-bottom:16px;overflow:auto}#chain-steps button{gap:5px;padding:12px;display:grid}#chain-steps button span{color:var(--muted);font-size:12px}.tl-equation{grid-template-columns:minmax(180px,2.4fr) 16px minmax(65px,1fr) 16px minmax(65px,1fr);align-items:center;gap:10px;margin:20px 0;display:grid}.tl-equation>div{min-width:0}.tl-matrix,.tl-column-vector{border-left:2px solid var(--tl-line);border-right:2px solid var(--tl-line);border-radius:5px;gap:6px;margin:16px 0;padding:8px;display:grid;position:relative}.tl-matrix{grid-template-columns:repeat(4,minmax(0,1fr))}.tl-matrix [role=row]{display:contents}.tl-matrix [role=cell],.tl-column-vector span{background:var(--paper);min-height:44px;font:12px var(--mono);overflow-wrap:anywhere;border-radius:4px;place-content:center;display:grid}.tl-matrix [role=cell]:nth-child(4),.tl-matrix-editor input:nth-child(4n){background:var(--mint)}.tl-matrix-editor input{text-align:center;appearance:textfield}.tl-matrix-editor input::-webkit-inner-spin-button{appearance:none}.tl-inline-actions{flex-wrap:wrap;gap:8px;display:flex}#apply-matrix{background:var(--green);color:var(--paper)}.tl-row-calculations{background:var(--paper);border-radius:6px;padding:8px 14px}.tl-row-calculations p{font:12px/1.8 var(--mono);overflow-wrap:anywhere;margin:8px 0}.tl-invariant{font:12px/1.8 var(--mono);overflow-wrap:anywhere;border-left:3px solid #b87914;padding:8px 12px}.tl-accumulated{max-width:480px}.transform-lab summary{cursor:pointer;min-height:44px;padding:14px 0;font-size:12px}.tl-edit-grid,.tl-order-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}:is(.tl-edit-grid,.tl-order-grid)>.tl-panel{border:1px solid var(--line);border-radius:10px}.tl-endpoints{grid-template-columns:minmax(0,1fr) 16px minmax(0,1fr);align-items:center;gap:8px;display:grid}#actor-code{font:11px/1.9 var(--mono);background:var(--paper);border-radius:5px;padding:12px;overflow-x:auto}.tl-order-lab{border-top:1px solid var(--line);margin-top:40px;padding-top:8px;scroll-margin-top:30px}#order-plot{width:100%;max-height:270px;display:block}#order-plot text{fill:currentColor;font:11px var(--mono)}.tl-notes{border-top:1px solid var(--line);margin-top:26px;font-size:13px}.tl-notes>div{max-width:850px;color:var(--muted)}.tl-notes a{text-decoration:underline}:root[data-theme=dark] .transform-lab{--tl-selected:#293d5a;--tl-accent:#a3bdf8}:root[data-theme=dark] .tl-error,:root[data-theme=dark] .tl-vector-inputs .tl-x{color:#fda6b0}:root[data-theme=dark] .tl-vector-inputs .tl-y{color:#8eddb2}:root[data-theme=dark] .tl-vector-inputs .tl-z{color:#a3bdf8}@media (width<=1180px){.tl-workbench{grid-template-columns:185px minmax(0,1fr)}.tl-point-panel{border-left:0;border-top:1px solid var(--line);grid-column:1/-1;grid-template-columns:1fr 1fr;gap:8px 24px;display:grid}.tl-point-panel>*{grid-column:1;margin-top:0;margin-bottom:0}.tl-point-panel .tl-readings-wrap{grid-area:2/2/9}.tl-point-panel>.tl-help:last-child{grid-column:2}.tl-point-panel .tl-panel-heading{grid-column:1/-1}.tl-edit-grid{grid-template-columns:1fr 1fr}.tl-edit-grid>:last-child{grid-column:1/-1}.tl-chain-layout{grid-template-columns:230px minmax(0,1fr)}}@media (width<=800px){.tl-heading{flex-wrap:wrap;align-items:start;gap:12px}.tl-heading p{font-size:13px}.tl-study-heading{display:block}.tl-study-heading>p{max-width:none;margin-top:12px}.tl-chain-layout{grid-template-columns:1fr}.tl-step-panel{border-right:0;border-bottom:1px solid var(--line)}#chain-steps{gap:8px;display:flex}#chain-steps button{flex:0 0 190px}.tl-order-grid{grid-template-columns:1fr 1fr}.tl-order-grid>:last-child{grid-column:1/-1}}@media (width<=580px){.tl-workbench,.tl-edit-grid,.tl-order-grid{grid-template-columns:1fr}.tl-stage-panel{grid-row:1}.tl-point-panel{grid-row:2;display:block}.tl-point-panel>*{margin-bottom:12px}.tl-stage{flex:none;height:340px;min-height:340px}.tl-stage-toolbar{padding:9px}.tl-stage-toolbar :is(button,select){padding:7px;font-size:11px}.tl-hierarchy{border-right:0;border-top:1px solid var(--line);padding:20px}#frame-list{grid-template-columns:1fr 1fr;display:grid}.tl-tree-actions{grid-template-columns:1fr 1fr}.tl-equation{grid-template-columns:minmax(0,2.4fr) 10px minmax(0,.8fr) 10px minmax(0,.8fr);gap:3px}.tl-equation .tl-mono{font-size:10px}.tl-matrix,.tl-column-vector{gap:4px;padding:6px 3px}.tl-equation :is([role=cell],.tl-column-vector span){font-size:10px}.transform-lab .tl-matrix-editor input{padding-inline:2px;font-size:11px}.tl-step-detail{padding:14px}.tl-status{padding-inline:0}.tl-lessons>span{width:100%}.tl-lessons button{font-size:12px}}.transform-lab [hidden]{display:none!important}.tl-workbench{grid-template-columns:185px minmax(0,1fr) 310px}.tl-inspect-panel{border-left:1px solid var(--line);padding:16px}.tl-inspect-tabs,.tl-mode-switch{gap:6px;margin-bottom:16px;display:flex}.tl-inspect-tabs button,.tl-mode-switch button{flex:1}.tl-inspect-tabs [aria-selected=true],.tl-mode-switch [aria-pressed=true]{color:var(--tl-accent);border-color:var(--tl-accent);background:var(--tl-selected)}.tl-inspect-panel .tl-point-panel{border:0;padding:0;display:block}.tl-lesson-hint{border-left:3px solid var(--tl-accent);background:var(--surface);margin:0 0 18px;padding:12px 16px;font-size:13px;line-height:1.8}.tl-axis-control{grid-template-columns:25px minmax(0,1fr) minmax(0,1fr);align-items:center;gap:8px;margin-bottom:8px;display:grid}.tl-axis-control b{font:600 13px var(--mono);text-align:center}.tl-axis-control button{font:600 13px var(--mono);color:inherit}.tl-check-field{align-items:center;gap:7px;min-height:36px;font-size:12px;display:flex}.tl-check-field input{flex:none;width:16px;height:16px}.tl-motion-readout{background:var(--paper);overflow-wrap:anywhere;border-radius:6px;gap:6px;padding:12px;display:grid}.tl-motion-readout strong{font:600 18px var(--mono);color:var(--tl-accent)}.tl-motion-readout span{font:11px/1.6 var(--mono);color:var(--muted)}.tl-motion-result{border-top:1px solid var(--line);margin-top:12px;padding-top:6px;font-size:12px}.tl-motion-result p{line-height:1.7}.tl-camera-toolbar{border-bottom:1px solid var(--tl-line);flex-wrap:wrap;align-items:center;gap:7px 10px;padding:8px 12px;font-size:11px;display:flex}.tl-camera-toolbar label{align-items:center;gap:5px;display:flex}.tl-camera-toolbar :is(button,select){border-color:var(--tl-line);color:var(--tl-ink);background:#f8faff;padding:6px 8px;font-size:11px}.tl-selection-strip{color:#315cb5;font:11px/1.7 var(--mono);background:#e3ebfb;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:10px 12px;display:flex}.tl-motion-label{color:#3e5171;font:10px var(--mono);white-space:nowrap;background:#f8faffdf;border-radius:4px;padding:3px 5px;position:absolute;transform:translate(12px,-22px)}#vtk-viewport[data-camera-mode=pan]{cursor:grab}#vtk-viewport[data-picking=true]{cursor:crosshair}@media (width>=1181px){.tl-workbench{height:800px}.tl-workbench>.tl-panel{overflow-y:auto}.tl-stage-panel{min-height:0}}@media (width<=1180px){.tl-workbench{grid-template-columns:170px minmax(0,1fr)}.tl-inspect-panel{border-left:0;border-top:1px solid var(--line);grid-column:1/-1}#motion-panel{grid-template-columns:1fr 1fr;gap:8px 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