._lab_1etr5_1{--ink:#193c4c;--muted:#466674;--active:#226b74;color:var(--ink);background:#eef4ec;border:1px solid #9bbcc0;border-radius:22px;min-width:0;margin:28px 0;padding:clamp(14px,2.4vw,24px);scroll-margin-top:32px;font-size:1rem;line-height:1.6;box-shadow:0 12px 26px #17384914;container:perceptionLab/inline-size}._lab_1etr5_1 *{box-sizing:border-box;min-width:0}._lab_1etr5_1 :is(p,h4,h5,h6,figure){margin:0}._lab_1etr5_1 p+p{margin-top:10px}._lab_1etr5_1 :is(button,select){font:inherit;min-height:44px;color:var(--ink);white-space:normal;cursor:pointer;background:#fffdf6;border:1px solid #9aafb6;border-radius:9px;padding:10px 12px;line-height:1.35}._lab_1etr5_1 button[aria-pressed=true],._lab_1etr5_1 ._primary_1etr5_2{background:var(--active);color:#fff;border-color:var(--active);font-weight:800}._lab_1etr5_1 button:disabled{opacity:.55;cursor:default}._lab_1etr5_1 :is(button,select,summary,[tabindex]):focus-visible{outline-offset:3px;outline:3px solid #8b5b18}._lab_1etr5_1 summary{cursor:pointer;min-height:44px;padding:10px 0;font-weight:750}._heading_1etr5_3{border-bottom:1px solid #b7cfcb;align-items:center;gap:16px;margin-bottom:18px;padding-bottom:18px;display:flex}._heading_1etr5_3 svg{color:#2c6f78;flex-shrink:0;width:65px}._heading_1etr5_3 span,._stationHeading_1etr5_3>span{letter-spacing:.08em;text-transform:uppercase;color:#3a737c;font-size:.69rem;font-weight:800}._lab_1etr5_1 ._heading_1etr5_3 h4{overflow-wrap:normal;font-size:clamp(1.3rem,5cqi,2.6rem);font-weight:900;line-height:1.2;margin:3px 0!important}._heading_1etr5_3 p{color:var(--muted);font-size:.86rem}._modeRow_1etr5_4{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:10px;margin-bottom:8px;display:grid}._choices_1etr5_4{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:10px 0;display:grid}._choices_1etr5_4 button{font-size:.83rem}._choices_1etr5_4 button:last-child:nth-child(odd){grid-column:1/-1}._modeRow_1etr5_4 ._choices_1etr5_4{margin:0}._choose_1etr5_4{font-weight:800;font-size:.84rem!important}._note_1etr5_4{color:var(--muted);line-height:1.55;font-size:.78rem!important}._stationHeading_1etr5_3{margin:20px 0 12px}._stationHeading_1etr5_3 h5{margin-top:4px;font-size:1.3rem;line-height:1.3}._stationHeading_1etr5_3 p{font-size:.88rem}._setup_1etr5_4{background:#fffdf7;border-left:3px solid #b68e45;padding:12px;font-size:.9rem;margin-bottom:14px!important}._workArea_1etr5_5{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:start;gap:14px;display:grid}._demonstration_1etr5_5,._explanation_1etr5_5{background:#fffdf7;border:1px solid #becfce;border-radius:13px;padding:14px}._explanation_1etr5_5 h5{margin-bottom:12px;font-size:1.08rem;line-height:1.35}._explanation_1etr5_5 p{margin-top:12px;font-size:.87rem}._explanation_1etr5_5 button{width:100%;font-size:.85rem}._explanation_1etr5_5 button+button,._explanation_1etr5_5>button:last-child{margin-top:12px}._concept_1etr5_5{color:#246b73;font-weight:800}._stimulusScroll_1etr5_5{overscroll-behavior-x:contain;background:#f2f3e9;border:1px solid #c4d2c9;border-radius:8px;width:100%;overflow-x:auto}._stimulus_1etr5_5{background:#f2f3e9;width:100%;min-width:0;height:auto;display:block}._readout_1etr5_5{text-align:center;color:#346271;font-variant-numeric:tabular-nums;margin:10px 0;font-size:.8rem;font-weight:750}._two_1etr5_5,._playback_1etr5_5,._footer_1etr5_5{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:12px 0;display:grid}._playback_1etr5_5{grid-template-columns:repeat(3,minmax(0,1fr))}._playback_1etr5_5 button,._two_1etr5_5 button,._footer_1etr5_5 button{font-size:.8rem}._demonstration_1etr5_5>button{width:100%;margin:8px 0}._selectLabel_1etr5_5{margin:12px 0 6px;font-size:.8rem;font-weight:800;display:block}._demonstration_1etr5_5 select{width:100%;font-size:.84rem}._prediction_1etr5_5{margin-top:14px;font-size:.82rem}._frameStrip_1etr5_5{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:12px;display:grid}._frameStrip_1etr5_5 button{padding:7px 4px;font-size:.72rem}._frameStrip_1etr5_5 svg{background:#eef1e8;border-radius:4px;width:100%;height:auto;display:block}._frameStrip_1etr5_5 span{margin-top:3px;display:block}._footer_1etr5_5{margin-top:18px}._scrollHint_1etr5_5{color:var(--muted);font-size:.73rem;display:none;margin-top:7px!important}._stationMenu_1etr5_6{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}._stationMenu_1etr5_6 button{color:#153a4b;text-align:left;cursor:pointer;background:#f5f7ed;border:1px solid #a4bcc0;border-radius:12px;grid-template-columns:32px minmax(0,1fr);gap:5px 10px;min-height:90px;padding:14px;display:grid}._stationMenu_1etr5_6 button[aria-pressed=true]{color:#fff;background:#246b74}._stationMenu_1etr5_6 span{grid-row:1/3;font-size:1.3rem;font-weight:900}._stationMenu_1etr5_6 strong{font-size:.92rem}._stationMenu_1etr5_6 small{font-size:.8rem;line-height:1.5}._stationMenu_1etr5_6 button:last-child{grid-column:1/-1}._stationMenu_1etr5_6 button:focus-visible{outline-offset:3px;outline:3px solid #c69337}._stimulus_1etr5_5{min-width:0}._reference_1etr5_8{border-top:1px solid #b7ceca;margin-top:20px;padding-top:18px}._reference_1etr5_8[data-collapsed=true]{display:none}._reference_1etr5_8 h5,._reference_1etr5_8 h6{margin:12px 0;font-size:1.1rem}._referenceStation_1etr5_8{margin-top:24px}._referenceStation_1etr5_8 figure{margin:14px 0}._referenceStation_1etr5_8 figcaption{margin-top:6px;font-size:.82rem;font-weight:750}._referenceStation_1etr5_8 p{font-size:.9rem}._referenceStation_1etr5_8 ._stimulusScroll_1etr5_5{max-width:600px}@container perceptionLab (width<=42em){._workArea_1etr5_5,._modeRow_1etr5_4{grid-template-columns:1fr}._heading_1etr5_3 svg{width:48px}._explanation_1etr5_5{padding:14px}._scrollHint_1etr5_5{display:block}}@container perceptionLab (width<=18em){._playback_1etr5_5,._two_1etr5_5,._footer_1etr5_5,._frameStrip_1etr5_5,._choices_1etr5_4{grid-template-columns:1fr}._choices_1etr5_4 button:last-child:nth-child(odd){grid-column:auto}._heading_1etr5_3{flex-direction:column;align-items:flex-start}._stationMenu_1etr5_6{grid-template-columns:1fr}._stationMenu_1etr5_6 button:last-child{grid-column:auto}}@media print{._lab_1etr5_1{box-shadow:none;break-inside:auto;background:#fff;border-color:#888}._interactive_1etr5_11{display:none!important}._reference_1etr5_8{display:block!important}._stimulusScroll_1etr5_5{overflow:visible}._stimulus_1etr5_5{min-width:0}._heading_1etr5_3 svg{width:40px}}._fullExplanation_1etr5_13{background:#fffdf7;border:1px solid #b7cdca;border-radius:12px;margin-top:14px;padding:14px;font-size:.9rem}._fullExplanation_1etr5_13 p{margin:0}._fullExplanation_1etr5_13 p+p{margin-top:10px}._lab_1etr5_1 :is(button,select){background:#fffdf8;border-color:#b0c3c5;border-radius:12px;min-height:48px;transition:background-color .15s,border-color .15s,box-shadow .15s;box-shadow:0 2px 3px #123c4710}._lab_1etr5_1 button:not(:disabled):hover{background:#e9f2ed;border-color:#4d8c92;box-shadow:0 3px 6px #123c4719}._lab_1etr5_1 button:not(:disabled):active{box-shadow:inset 0 1px 3px #123c4726}._lab_1etr5_1 button[aria-pressed=true],._lab_1etr5_1 ._primary_1etr5_2{color:#fff;background:linear-gradient(150deg,#2d7a80,#205f6b);border-color:#256874;box-shadow:0 3px 7px #16495726}._lab_1etr5_1 button[aria-pressed=true]:hover,._lab_1etr5_1 ._primary_1etr5_2:not(:disabled):hover{color:#fff;background:#245e69;border-color:#194f5b}._lab_1etr5_1 ._choices_1etr5_4{background:#e1ece7;border:1px solid #bfd2cc;border-radius:16px;gap:5px;padding:5px}._lab_1etr5_1 ._choices_1etr5_4 button{box-shadow:none;background:0 0;border-color:#0000;font-weight:700}._lab_1etr5_1 ._choices_1etr5_4 button[aria-pressed=true]{background:linear-gradient(150deg,#2d7a80,#205f6b);border-color:#256874;box-shadow:0 2px 5px #16495725}._lab_1etr5_1 ._choices_1etr5_4 button:not([aria-pressed=true]):not(:disabled):hover{background:#f7faf5;border-color:#bed3cf}._modeRow_1etr5_4{align-items:stretch}._lab_1etr5_1 ._choose_1etr5_4{color:#205665;background:#fffdf7;border:1px solid #8eb3b8;box-shadow:0 2px 5px #16495714}._lab_1etr5_1 ._two_1etr5_5,._lab_1etr5_1 ._playback_1etr5_5{gap:10px}._lab_1etr5_1 ._readout_1etr5_5{background:#edf3ed;border-radius:8px;justify-content:center;align-items:center;margin:12px 0;padding:7px 10px;display:flex}._lab_1etr5_1 ._footer_1etr5_5{border-top:1px solid #bfd3cd;gap:10px;padding-top:16px}._lab_1etr5_1 ._footer_1etr5_5 button{background:#f9fbf4}._lab_1etr5_1 ._frameStrip_1etr5_5 button{background:#f7f9f0;border-radius:10px;min-height:72px}._lab_1etr5_1 ._frameStrip_1etr5_5 button[aria-pressed=true]{color:#1c535f;background:#dbeae5;border-color:#43808a;box-shadow:inset 0 0 0 1px #43808a}._lab_1etr5_1 ._stationMenu_1etr5_6 button{transition:background-color .15s,border-color .15s;box-shadow:0 2px 5px #123c4715}._lab_1etr5_1 ._stationMenu_1etr5_6 button:hover{background:#e7f1e9;border-color:#548991}._lab_1etr5_1 ._stationMenu_1etr5_6 button[aria-pressed=true]:hover{color:#fff;background:#245e69}@media (prefers-reduced-motion:reduce){._lab_1etr5_1 :is(button,select){transition:none}}@container perceptionLab (width<=42em){._stationMenu_1etr5_6{grid-template-columns:1fr}._stationMenu_1etr5_6 button:last-child{grid-column:auto}}._lab_1etr5_1 button[aria-pressed=true],._lab_1etr5_1 ._primary_1etr5_2,._lab_1etr5_1 ._choices_1etr5_4 button[aria-pressed=true]{background-color:#205f6b}