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var(--border);border-radius:var(--radius-2);background:var(--surface-raised-2);color:var(--text-muted);font-size:9px;font-weight:var(--fw-600);letter-spacing:.1em;cursor:pointer;line-height:1}.sweep-btn:hover{color:var(--text-primary);border-color:var(--border-2)}.sweep-btn-active{background:var(--accent-track);border-color:var(--accent);color:#f2f4f8}.sweep-controls{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:6px}.sweep-field{display:inline-flex;align-items:center;gap:4px;font-family:var(--font-mono);font-size:var(--fs-note);color:var(--text-dim-2);letter-spacing:.04em}.sweep-field input[type=number]{width:4.6em;height:20px;padding:0 4px;border:1px solid var(--border);border-radius:var(--radius-2);background:var(--surface-raised-2);color:var(--text-primary);font-family:var(--font-mono);font-size:var(--fs-value)}.sweep-field input[type=number]:focus{outline:1px solid var(--accent);outline-offset:0}.sweep-field 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0}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:var(--radius-2);background:var(--track)}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:11px;height:11px;margin-top:-4px;border:0;border-radius:50%;background:var(--thumb);cursor:pointer}input[type=range]::-webkit-slider-thumb:hover{background:var(--accent)}input[type=range]::-moz-range-track{height:3px;border-radius:var(--radius-2);background:var(--track)}input[type=range]::-moz-range-thumb{width:11px;height:11px;border:0;border-radius:50%;background:var(--thumb);cursor:pointer}input[type=range]::-moz-range-thumb:hover{background:var(--accent)}.toggle-row{display:flex;align-items:center;gap:9px;width:100%;padding:8px 14px;border-bottom:1px solid var(--hairline-2);background:var(--surface);color:var(--text-secondary);font-size:var(--fs-row);cursor:pointer;text-align:left}.toggle-swatch{width:9px;height:9px;border-radius:var(--radius-2);flex:0 0 auto}.pill{margin-left:auto;position:relative;width:22px;height:11px;border-radius:var(--radius-6);flex:0 0 auto}.pill-on{background:var(--accent-track)}.pill-off{background:var(--track-off)}.pill-knob{position:absolute;top:1px;width:9px;height:9px;border-radius:50%;background:var(--accent)}.pill-on .pill-knob{right:1px}.pill-off .pill-knob{left:1px;background:var(--knob)}.toggle-footnote{padding:11px 14px 16px;font-family:var(--font-mono);font-size:var(--fs-note);line-height:1.6;color:var(--text-faint)}.spectrum-list{border-bottom:1px solid var(--hairline-2)}.spectrum-row{position:relative;display:flex;align-items:center;gap:9px;width:100%;padding:6px 14px;border:0;background:var(--surface);color:var(--text-secondary-2);font-size:var(--fs-row);cursor:pointer;text-align:left;transition:background .12s ease,color .12s ease}.spectrum-row:hover{background:var(--surface-raised-2);color:#f2f4f8}.spectrum-row:hover .spectrum-range{color:var(--text-primary)}.spectrum-row:focus-visible{background:var(--surface-raised-2);outline:1px solid var(--accent);outline-offset:-1px;z-index:1}.spectrum-row-active{background:var(--surface-raised)}.spectrum-row-active:before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent)}.spectrum-bar{width:26px;height:4px;border-radius:var(--radius-2);flex:0 0 auto}.spectrum-range{margin-left:auto;font-family:var(--font-mono);font-size:11.5px;color:var(--text-dim-3)}.derived-list{border-bottom:1px solid var(--hairline-2)}.derived-row-block{border-bottom:1px solid var(--hairline-3)}.derived-row-block.derived-row-open{background:var(--surface-raised)}.derived-row{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding:5px 14px}.derived-label-group{display:inline-flex;align-items:baseline;gap:5px;min-width:0}.derived-label{font-family:var(--font-mono);font-size:var(--fs-table);color:var(--text-dim);white-space:nowrap}.derived-info{flex:0 0 auto;width:18px;height:18px;padding:0;border:0;border-radius:50%;background:transparent;color:var(--text-faint);font-family:var(--font-ui);font-size:13px;line-height:1;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.derived-info:hover,.derived-info:focus-visible{color:var(--accent);outline:none}.derived-info:focus-visible{box-shadow:0 0 0 1px var(--accent)}.derived-info-active{color:var(--accent)}.derived-value{font-family:var(--font-mono);font-size:var(--fs-value);color:var(--text-primary);text-align:right}.derived-explainer{margin:0;padding:0 14px 9px;font-family:var(--font-ui);font-size:14px;line-height:1.55;color:var(--text-primary);letter-spacing:.01em}.pol-state{padding:10px 14px 12px;border-bottom:1px solid var(--hairline-2)}.pol-name{font-size:14px;font-weight:var(--fw-600);color:var(--polarization)}.pol-detail{font-family:var(--font-mono);font-size:var(--fs-table);color:var(--text-dim);line-height:1.65;margin-top:4px}.equations{padding:11px 14px 22px;display:flex;flex-direction:column;gap:9px;font-family:var(--font-mono);font-size:var(--fs-equation);color:var(--text-secondary)}.equations-row-pair{display:flex;justify-content:space-between;gap:8px}.equations-hairline{height:1px;background:#181c23;margin:1px 0}.equations-dim{color:var(--text-dim-3)}.equations-note{color:var(--text-dim);font-size:12px;line-height:1.6}.transport{grid-column:1 / -1;grid-row:3;display:flex;align-items:center;gap:16px;padding:0 var(--pad-header);background:var(--surface);border-top:1px solid var(--hairline)}.play-btn{width:34px;height:28px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--surface-raised-2);color:var(--text-primary);border-radius:var(--radius-3);cursor:pointer;font-family:var(--font-mono);font-size:11px}.reset-btn{height:28px;padding:0 11px;border:1px solid var(--border);background:var(--surface-raised);color:var(--text-muted);border-radius:var(--radius-3);cursor:pointer;font-size:var(--fs-reset);font-weight:var(--fw-600);letter-spacing:.1em}.phase-group,.speed-group{display:flex;align-items:center;gap:10px}.phase-group{flex:1 1 0;min-width:0}.speed-group{flex:0 1 200px;min-width:0}.transport-label{font-size:var(--fs-transport-label);font-weight:var(--fw-600);letter-spacing:.16em;color:var(--text-dim-3);white-space:nowrap}.transport-readout{font-family:var(--font-mono);font-size:var(--fs-equation);color:var(--text-primary);flex:0 0 auto;text-align:right;white-space:nowrap}.phase-group input[type=range],.speed-group input[type=range]{flex:1 1 0;min-width:40px}.viewport{grid-row:2;grid-column:2;position:relative;background:var(--bg);overflow:hidden}.scene-mount{position:absolute;top:0;right:0;bottom:0;left:0;touch-action:none}.scene-mount canvas{display:block;touch-action:none}.scene-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.viewport-static{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.legend{position:absolute;left:14px;top:12px;display:flex;flex-direction:column;gap:5px}.legend-row{display:flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:var(--fs-table);color:var(--text-muted-2)}.legend-bar{width:14px;height:2px}.hints{position:absolute;left:14px;right:14px;bottom:12px;display:flex;justify-content:space-between;align-items:flex-end;gap:12px;font-family:var(--font-mono);font-size:var(--fs-hint);color:var(--text-faint-2);letter-spacing:.04em}.hint-touch{display:none}.hint-status{text-align:right;flex:0 1 auto;min-width:0}.rail-toggles{display:none}.rail-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;border:0;padding:0;margin:0;background:#00000073;cursor:pointer}.rail-toggle{min-height:36px;padding:0 12px;border:1px solid var(--border);background:var(--surface-raised-2);color:var(--text-muted);border-radius:var(--radius-3);font-size:var(--fs-reset);font-weight:var(--fw-600);letter-spacing:.12em;cursor:pointer;box-shadow:var(--shadow-card)}.rail-toggle:hover{color:var(--text-primary);border-color:var(--border-2)}.rail-toggle-active{background:var(--surface-active);color:#f2f4f8;border-color:var(--accent)}@media(max-width:1100px){.instrument{grid-template-columns:1fr;grid-template-rows:var(--row-header) 1fr var(--row-transport)}.viewport{grid-column:1;grid-row:2}.rail-toggles{display:flex;position:absolute;z-index:25;left:12px;right:12px;bottom:calc(var(--row-transport) + 10px);justify-content:space-between;gap:10px;pointer-events:none}.rail-toggles .rail-toggle{pointer-events:auto}.rail-backdrop.rail-backdrop-visible{display:block}.left-rail,.right-rail{position:fixed;top:var(--row-header);bottom:var(--row-transport);z-index:40;width:min(var(--col-left),92vw);max-width:360px;border:0;box-shadow:var(--shadow-card);transition:transform .22s ease;will-change:transform}.left-rail{left:0;grid-column:auto;grid-row:auto;border-right:1px solid var(--hairline);transform:translate(-105%)}.right-rail{right:0;left:auto;width:min(var(--col-right),92vw);grid-column:auto;grid-row:auto;border-left:1px solid var(--hairline);transform:translate(105%)}.left-rail.rail-open,.right-rail.rail-open{transform:translate(0)}.instrument.rail-drawer-open .rail-toggles{z-index:45}.header{gap:14px;padding:0 12px}.header-subtitle{display:none}.hints{bottom:52px}}@media(max-width:640px){.header{gap:10px;padding:0 10px}.header-title{font-size:11px;letter-spacing:.12em}.header-tabs{flex-shrink:1;min-width:0;overflow-x:auto}.tab{padding:5px 8px;font-size:9.5px;letter-spacing:.06em;white-space:nowrap}.header-readouts{gap:10px;font-size:10px}.header-readouts .readout:last-child{display:none}.transport{gap:10px;padding:0 10px}.transport-label{display:none}.speed-group{flex:0 1 120px}.play-btn,.reset-btn{flex:0 0 auto}.rail-toggles{left:10px;right:10px;bottom:calc(var(--row-transport) + 8px)}.rail-toggle{min-height:40px;padding:0 14px}.left-rail,.right-rail{width:min(100vw - 24px,360px);max-width:none}}@media(hover:none)and (pointer:coarse){.hint-pointer{display:none}.hint-touch{display:inline}}@media(prefers-reduced-motion:reduce){.left-rail,.right-rail{transition:none}}.charge-panel{padding:12px 14px 2px;display:flex;flex-direction:column;gap:10px}.charge-species{display:grid;grid-template-columns:1fr 1fr;gap:6px}.charge-species-btn{border:1px solid var(--hairline-2);background:var(--surface);color:var(--text-secondary);font-family:inherit;font-size:var(--fs-row);font-weight:var(--fw-600);padding:7px 8px;border-radius:var(--radius-2);cursor:pointer;transition:background .12s ease,border-color .12s ease,color .12s ease}.charge-species-btn:hover{background:var(--surface-raised-2);color:#f2f4f8}.charge-species-active{border-color:var(--charge-color, var(--accent));color:var(--charge-color, var(--accent));background:var(--surface-raised)}.charge-drop{width:100%;border:0;border-radius:var(--radius-2);background:var(--surface-raised);color:var(--text-primary);font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;padding:9px 12px;cursor:pointer;transition:background .12s ease}.charge-drop:hover{background:var(--surface-raised-2)}.charge-readout{font-family:var(--font-mono);font-size:11.5px;line-height:1.7;color:var(--text-dim-3)}.token-preview{position:fixed;right:12px;bottom:70px;z-index:1000;width:260px;max-height:70vh;overflow-y:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-3);padding:10px 12px;font-family:var(--font-ui)}.tp-header{font-size:10px;letter-spacing:.18em;color:var(--text-dim-3);margin-bottom:6px}.tp-swatch{display:flex;align-items:center;gap:8px;padding:3px 0}.tp-swatch-color{width:12px;height:12px;border-radius:var(--radius-2);border:1px solid var(--border);flex:0 0 auto}.tp-swatch-name{font-size:10px;color:var(--text-secondary);flex:1 1 auto}.tp-swatch-hex{font-family:var(--font-mono);font-size:9px;color:var(--text-dim)}.tp-type{margin-top:10px;display:flex;flex-direction:column;gap:4px;color:var(--text-primary)}.tp-wordmark{font-size:13px;font-weight:var(--fw-700);letter-spacing:.16em}.tp-section{font-size:9.5px;font-weight:var(--fw-600);letter-spacing:.18em;color:var(--text-dim-3)}.tp-tab{font-size:10.5px;font-weight:var(--fw-600);letter-spacing:.1em;color:var(--text-muted-2)}.tp-row{font-size:11px;color:var(--text-secondary)}.tp-mono{font-family:var(--font-mono);font-size:10.5px;color:var(--text-dim)}