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summary{width:fit-content;color:var(--muted);font-size:var(--font-size-small);cursor:pointer;border-radius:11px;margin-left:auto;padding:8px 11px;font-weight:850}._utilityDetails_1a4xl_113 summary:hover{color:var(--ink);background:#ffffffb8}._simulation_1a4xl_1 button{min-height:44px;color:var(--ink);font:inherit;font-size:var(--font-size-small);cursor:pointer;background:#fff;border:1px solid #c7d8dc;border-radius:13px;font-weight:850;transition:border-color .16s,background .16s,color .16s,transform .16s}._simulation_1a4xl_1 button:hover{border-color:#77a8a5;transform:translateY(-1px)}._simulation_1a4xl_1 button:focus-visible{outline-offset:2px;outline:3px solid #247f7847}._secondaryButton_1a4xl_199,._guideButton_1a4xl_201,._primaryButton_1a4xl_203{white-space:nowrap;justify-content:center;align-items:center;gap:7px;padding:0 14px;display:inline-flex}._modeTabs_1a4xl_221{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px;display:grid}._modeTabs_1a4xl_221 button{justify-content:center;align-items:center;gap:8px;min-height:52px;padding:8px 12px;display:flex}._modeTabs_1a4xl_221 button._active_1a4xl_253,._choiceRow_1a4xl_255 button._selected_1a4xl_255{border-color:var(--teal);background:var(--teal);color:#fff}._workspace_1a4xl_267{grid-template-columns:minmax(0,1.6fr) minmax(270px,.82fr);gap:16px;display:grid}._sceneColumn_1a4xl_279,._explanationPanel_1a4xl_281{background:#fffffff0;border:1px solid #d4e1e3;border-radius:22px;min-width:0}._sceneColumn_1a4xl_279{padding:14px}._sceneHeading_1a4xl_303{justify-content:space-between;align-items:center;gap:12px;padding:2px 2px 12px;display:flex}._sceneHeading_1a4xl_303>div{gap:2px;display:grid}._sceneHeading_1a4xl_303 span,._controlGroup_1a4xl_331>span,._observationLog_1a4xl_333>span,._inquiryCard_1a4xl_335 span,._conditionCard_1a4xl_337 span,._readout_1a4xl_339>span,._boundaryNote_1a4xl_341 span,._safetyNote_1a4xl_343 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#a9c1c1}._apparatus_1a4xl_461{width:min(430px,100%);height:382px;position:relative}._apparatusLabel_1a4xl_473{z-index:2;gap:1px;display:grid;position:absolute;top:5px;left:12px}._apparatusLabel_1a4xl_473 strong{font-size:var(--font-size-small)}._apparatusLabel_1a4xl_473 span{color:var(--muted);font-size:var(--font-size-small)}._ceiling_1a4xl_509{background:linear-gradient(#71868b,#455c62);border-radius:5px;width:180px;height:15px;position:absolute;top:46px;left:50%;transform:translate(-50%);box-shadow:0 7px 15px #28454a2e}._ceiling_1a4xl_509:after{content:"";border:4px solid #5d7176;border-top:0;border-radius:0 0 10px 10px;width:14px;height:15px;position:absolute;bottom:-12px;left:50%;transform:translate(-50%)}._springWire_1a4xl_559{width:74px;height:calc(112px + var(--spring-extension));flex-direction:column;justify-content:space-between;align-items:center;transition:height .46s 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0;display:block}._weightStack_1a4xl_693{gap:2px;margin-top:-1px;display:grid}._weightStack_1a4xl_693 span{color:#fff;width:68px;height:24px;font-size:var(--font-size-small);background:linear-gradient(#71898e,#4a6268);border:2px solid #374f56;border-radius:5px 5px 9px 9px;place-items:center;font-weight:900;display:grid}._ruler_1a4xl_731{background:repeating-linear-gradient(#0000 0 11px,#684b1f7a 11px 13px),#f4d891;border:1px solid #c5964e;border-radius:5px;width:44px;height:242px;position:absolute;top:64px;left:38px}._ruler_1a4xl_731 span,._ruler_1a4xl_731 b{color:#725b39;width:56px;font-size:var(--font-size-small);white-space:nowrap;font-weight:850;position:absolute;left:50px}._ruler_1a4xl_731 span{top:104px}._ruler_1a4xl_731 b{bottom:3px}._ruler_1a4xl_731 i{border-top:2px dashed #ad6d35;width:65px;position:absolute;top:118px;left:40px}._apparatusResult_1a4xl_811{background:#ffffffe0;border:1px solid #c8d9d8;border-radius:13px;gap:2px;min-width:148px;padding:10px 13px;display:grid;position:absolute;bottom:10px;right:8px;box-shadow:0 9px 22px #234e5117}._apparatusResult_1a4xl_811 span{color:var(--muted);font-size:var(--font-size-small);font-weight:800}._apparatusResult_1a4xl_811 strong{font-size:var(--font-size-small)}._compactApparatus_1a4xl_859{width:100%}._compactApparatus_1a4xl_859 ._ruler_1a4xl_731{width:33px;left:16px}._compactApparatus_1a4xl_859 ._ruler_1a4xl_731 span,._compactApparatus_1a4xl_859 ._ruler_1a4xl_731 b{display:none}._compactApparatus_1a4xl_859 ._apparatusResult_1a4xl_811{min-width:0;left:8px;right:8px}._forceArrow_1a4xl_899{width:4px;height:var(--force-height);background:currentColor;position:absolute;left:50%}._forceArrow_1a4xl_899 i{border-left:8px solid #0000;border-right:8px solid #0000;width:0;height:0;position:absolute;left:50%;transform:translate(-50%)}._forceArrow_1a4xl_899 span{color:var(--ink);font-size:var(--font-size-small);white-space:nowrap;background:#ffffffeb;border-radius:7px;padding:3px 7px;font-weight:900;position:absolute;left:12px}._forceArrow_1a4xl_899._up_1a4xl_959{color:var(--blue);margin-left:-56px;bottom:51px}._forceArrow_1a4xl_899._up_1a4xl_959 i{border-bottom:11px solid;border-left-width:8px;border-right-width:8px;top:-9px}._forceArrow_1a4xl_899._up_1a4xl_959 span{top:-10px}._forceArrow_1a4xl_899._down_1a4xl_993{color:var(--red);margin-left:52px;top:44px}._forceArrow_1a4xl_899._down_1a4xl_993 i{border-top:11px solid;bottom:-9px}._forceArrow_1a4xl_899._down_1a4xl_993 span{bottom:-10px}._mobileSceneSummary_1a4xl_1023{color:var(--muted);font-size:var(--font-size-small);margin:10px 2px 0;line-height:1.55;display:none}._controls_1a4xl_1039{background:#f7faf9;border:1px solid #d5e2e2;border-radius:17px;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) auto;gap:12px;margin-bottom:14px;padding:13px;display:grid}._controlGroup_1a4xl_331{gap:7px;min-width:0;display:grid}._choiceRow_1a4xl_255{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;display:grid}._choiceRow_1a4xl_255 button{min-width:0;padding:7px 8px}._controlGroup_1a4xl_331:nth-child(2) ._choiceRow_1a4xl_255{grid-template-columns:repeat(2,minmax(0,1fr))}._primaryButton_1a4xl_203{align-self:end;padding:0 16px;border-color:var(--amber)!important;background:var(--amber)!important;color:#fff!important;min-height:48px!important}._observationLog_1a4xl_333{background:#fbfdfc;border:1px solid #d5e2e2;border-radius:16px;gap:8px;margin-top:12px;padding:12px 13px;display:grid}._observationLog_1a4xl_333>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}._observationLog_1a4xl_333 p{color:#7d8d91;font-size:var(--font-size-small);border:1px dashed #c9d7d8;border-radius:11px;gap:2px;margin:0;padding:9px 10px;display:grid}._observationLog_1a4xl_333 p._recorded_1a4xl_1175{background:var(--teal-soft);color:var(--ink);border-style:solid;border-color:#88b9b4}._observationLog_1a4xl_333 p strong,._observationLog_1a4xl_333 p span{min-width:0}._explanationPanel_1a4xl_281{align-content:start;gap:12px;padding:16px;display:grid}._inquiryCard_1a4xl_335,._conditionCard_1a4xl_337,._readout_1a4xl_339,._boundaryNote_1a4xl_341,._forceKey_1a4xl_1221{border-radius:16px;gap:7px;padding:14px;display:grid}._inquiryCard_1a4xl_335{background:var(--teal-soft)}._inquiryCard_1a4xl_335 strong,._readout_1a4xl_339 strong{line-height:1.55}._conditionCard_1a4xl_337{background:#fff8eb;border:1px solid #e6d3b6}._conditionCard_1a4xl_337 p,._boundaryNote_1a4xl_341 p,._safetyNote_1a4xl_343 p,._forceKey_1a4xl_1221 p{font-size:var(--font-size-small);margin:0;line-height:1.6}._readout_1a4xl_339{background:#fff;border:1px solid #cddfe1}._forceKey_1a4xl_1221{background:#f5f8fd;border:1px solid #d5dfee}._forceKey_1a4xl_1221 p{align-items:center;gap:8px;display:flex}._forceKey_1a4xl_1221>strong{font-size:var(--font-size-small);line-height:1.55}._forceKey_1a4xl_1221 i{border-radius:50%;width:12px;height:12px}._upKey_1a4xl_1335{background:var(--blue)}._downKey_1a4xl_1343{background:var(--red)}._boundaryNote_1a4xl_341{background:#f4f7f7;border:1px solid #d7e0e2}._safetyNote_1a4xl_343{color:#7c3930;background:#fff2ee;border:1px solid #edc7bd;border-radius:16px;gap:10px;padding:13px;display:flex}._safetyNote_1a4xl_343 svg{flex:none;margin-top:2px}._classroom_1a4xl_1391{z-index:1000;background:#eef6f4;border:0;border-radius:0;position:fixed;inset:0;overflow:auto}._classroom_1a4xl_1391 ._workspace_1a4xl_267{min-height:calc(100vh - 160px)}@media (width<=980px){._workspace_1a4xl_267{grid-template-columns:1fr}._explanationPanel_1a4xl_281{grid-template-columns:repeat(2,minmax(0,1fr))}._safetyNote_1a4xl_343,._forceKey_1a4xl_1221{grid-column:1/-1}}@media 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