._root_1670y_1{color:#1f2933;word-break:keep-all;overflow-wrap:anywhere;background:#fff;border:1px solid #cfd8d2;border-radius:14px;min-width:0;margin-top:24px;padding:22px;box-shadow:0 20px 50px #1f29331a}._classroomMode_1670y_27{z-index:1000;background:#edf6f3;border:0;border-radius:0;margin:0;padding:28px;position:fixed;inset:0;overflow:auto}._header_1670y_51{justify-content:space-between;align-items:flex-start;gap:24px;display:flex}._header_1670y_51>*,._cardHeading_1670y_67>*,._workspace_1670y_69>*,._flow_1670y_71>*,._outcomeGrid_1670y_73>*,._comparisonGrid_1670y_75>*,._materialGrid_1670y_77>*{min-width:0}._header_1670y_51 h2{font-size:var(--font-size-title);margin:4px 0 8px;line-height:1.2}._header_1670y_51 p{color:#667085;max-width:790px;margin:0;line-height:1.6}._kicker_1670y_111{font-size:var(--font-size-small);letter-spacing:.08em;font-weight:900;color:#1f7558!important}._headerActions_1670y_125{flex-wrap:wrap;flex:none;gap:8px;display:flex}._headerActions_1670y_125 button,._modeTabs_1670y_141 button,._predictions_1670y_143 button,._sievePicker_1670y_145 button,._primaryAction_1670y_147,._processStepper_1670y_149 button,._stepActions_1670y_151 button{font:inherit;cursor:pointer}._headerActions_1670y_125 button{background:#f7faf8;border:1px solid #ccd7d0;border-radius:9px;justify-content:center;align-items:center;gap:7px;min-height:42px;padding:9px 12px;font-weight:800;display:inline-flex}._headerActions_1670y_125 button:hover,._headerActions_1670y_125 button:focus-visible{border-color:#1f7558;outline:none;box-shadow:0 0 0 3px #1f755824}._modeTabs_1670y_141{background:#e6f1ed;border-radius:11px;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:18px;padding:6px;display:grid}._modeTabs_1670y_141 button{color:#52635c;white-space:normal;background:0 0;border:0;border-radius:8px;min-height:50px;padding:8px 12px;font-weight:900}._flow_1670y_71{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px;display:grid}._flow_1670y_71 section{background:#f9fbfa;border:1px solid #dce3de;border-radius:10px;min-height:126px;padding:14px}._flow_1670y_71 span,._cardHeading_1670y_67 span{color:#1f7558;font-size:var(--font-size-small);letter-spacing:.055em;font-weight:900;display:block}._flow_1670y_71 strong{margin-top:6px;line-height:1.45;display:block}._flow_1670y_71 p{color:#667085;font-size:var(--font-size-small);margin:9px 0 0;line-height:1.5}._predictions_1670y_143{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}._predictions_1670y_143 button{min-height:36px;font-size:var(--font-size-small);background:#fff;border:1px solid #cfd8d2;border-radius:999px;padding:7px 10px;font-weight:800}._predictions_1670y_143 button:hover,._predictions_1670y_143 button:focus-visible,._predictions_1670y_143 ._selected_1670y_367{color:#155a40;background:#dceee6;border-color:#1f7558;outline:none}._workspace_1670y_69{grid-template-columns:minmax(0,1.5fr) minmax(280px,.62fr);gap:14px;margin-top:14px;display:grid}._sceneCard_1670y_395,._controls_1670y_397,._comparisonCard_1670y_399,._trackingCard_1670y_401{background:#fbfcfb;border:1px solid #d8e0db;border-radius:12px}._sceneCard_1670y_395,._comparisonCard_1670y_399,._trackingCard_1670y_401{padding:14px}._cardHeading_1670y_67{justify-content:space-between;gap:16px;margin-bottom:11px;display:flex}._cardHeading_1670y_67 strong{font-size:var(--font-size-body);margin-top:3px;line-height:1.4;display:block}._cardHeading_1670y_67 p{color:#667085;max-width:330px;font-size:var(--font-size-small);text-align:right;margin:0;line-height:1.5}._sieveScene_1670y_471,._processScene_1670y_473{background:#e6f1ee;border-radius:12px;width:100%;height:auto;display:block}._particle_1670y_489{stroke-width:2px;transform-box:fill-box;transform-origin:50%}._sandParticle_1670y_501{fill:#d9a55f;stroke:#97622e}._gravelParticle_1670y_511{fill:#6f7f79;stroke:#3f514b}._shakingSieve_1670y_521{transform-origin:50%;animation:.56s ease-in-out _shake-sieve_1670y_1}._passedParticle_1670y_531{animation:.76s cubic-bezier(.22,.8,.26,1) both _particle-fall_1670y_1}._retainedParticle_1670y_539{animation:.52s ease-out both _particle-bounce_1670y_1}@keyframes _shake-sieve_1670y_1{0%,to{transform:translate(0)}18%{transform:translate(-9px)rotate(-1deg)}36%{transform:translate(9px)rotate(1deg)}54%{transform:translate(-7px)rotate(-.7deg)}72%{transform:translate(6px)rotate(.6deg)}}@keyframes _particle-fall_1670y_1{0%{opacity:.2;transform:translateY(-115px)}65%{opacity:1;transform:translateY(4px)}82%{transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes _particle-bounce_1670y_1{0%{transform:translateY(-16px)}55%{transform:translateY(5px)}78%{transform:translateY(-3px)}to{transform:translateY(0)}}._legend_1670y_591{color:#586861;font-size:var(--font-size-small);flex-wrap:wrap;align-items:center;gap:8px 16px;padding:10px 3px 0;font-weight:800;display:flex}._legend_1670y_591 span{align-items:center;gap:6px;display:inline-flex}._legend_1670y_591 strong{color:#1f2933;margin-left:auto}._sandKey_1670y_635,._gravelKey_1670y_637{border:2px solid;border-radius:50%;width:14px;height:14px;display:inline-block}._sandKey_1670y_635{background:#d9a55f;border-color:#97622e}._gravelKey_1670y_637{background:#6f7f79;border-color:#3f514b}._outcomeGrid_1670y_73{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:10px;display:grid}._outcomeGrid_1670y_73 article{background:#eef5f2;border:1px solid #dce5e0;border-radius:9px;padding:12px}._outcomeGrid_1670y_73 span{color:#63716a;font-size:var(--font-size-small);font-weight:800;display:block}._outcomeGrid_1670y_73 strong{color:#214d3c;margin-top:5px;line-height:1.4;display:block}._outcomeGrid_1670y_73 ._successOutcome_1670y_729{background:#dff2e8;border-color:#73b894}._emptyObservation_1670y_739{color:#5e6d66;background:#f6f9f7;border:1px dashed #bac8c1;border-radius:9px;margin:10px 0 0;padding:13px 15px;line-height:1.55}._controls_1670y_397{flex-direction:column;gap:11px;min-width:0;padding:12px;display:flex}._sievePicker_1670y_145{background:#fff;border:1px solid #d8e0db;border-radius:10px;gap:7px;margin:0;padding:13px;display:grid}._sievePicker_1670y_145 legend{font-size:var(--font-size-small);padding:0 5px;font-weight:900}._sievePicker_1670y_145 button{text-align:left;background:#fff;border:1px solid #cad4cf;border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;min-height:48px;padding:9px 11px;display:grid}._sievePicker_1670y_145 button span{font-weight:800}._sievePicker_1670y_145 button strong{color:#1f7558}._sievePicker_1670y_145 button:hover,._sievePicker_1670y_145 button:focus-visible,._sievePicker_1670y_145 ._selectedControl_1670y_853{background:#e1f0e9;border-color:#1f7558;outline:none}._controlExplanation_1670y_865{background:#eef4f2;border-radius:10px;padding:14px}._controlExplanation_1670y_865 strong{color:#155a40}._controlExplanation_1670y_865 p,._modelBox_1670y_887 p{color:#5f6e67;font-size:var(--font-size-small);margin:5px 0 0;line-height:1.55}._primaryAction_1670y_147{color:#fff;background:#1f7558;border:0;border-radius:9px;justify-content:center;align-items:center;gap:8px;min-height:50px;padding:11px 14px;font-weight:900;display:inline-flex;box-shadow:0 8px 18px #1f755838}._primaryAction_1670y_147:hover,._primaryAction_1670y_147:focus-visible{background:#175f47;outline:none;box-shadow:0 0 0 4px 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#1f755817}._comparisonGrid_1670y_75 ._cleanComparison_1670y_1073{background:#e4f3ea}._comparisonGrid_1670y_75 article ._unexplored_1670y_1081{color:#89958f;font-weight:700}._processStepper_1670y_149{gap:7px;display:grid}._processStepper_1670y_149 button{text-align:left;background:#fff;border:1px solid #d1dad5;border-radius:9px;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;min-height:52px;padding:8px 10px;display:grid}._processStepper_1670y_149 button>span{color:#5d6b65;background:#edf2ef;border-radius:50%;place-items:center;width:32px;height:32px;font-weight:900;display:grid}._processStepper_1670y_149 button strong{font-size:var(--font-size-small);line-height:1.4}._processStepper_1670y_149 button:hover,._processStepper_1670y_149 button:focus-visible,._processStepper_1670y_149 ._activeStep_1670y_1163{background:#e1f0e9;border-color:#1f7558;outline:none}._processStepper_1670y_149 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minmax(0,1fr);align-items:center;gap:12px;margin-top:10px;padding:13px 14px;display:grid}._evidenceBox_1670y_1377 span{color:#607069;font-size:var(--font-size-small);font-weight:900}._evidenceBox_1670y_1377 strong{color:#195c43;line-height:1.45}._safetyCallout_1670y_1421{color:#6a5026;background:#fff8e7;border:1px solid #e2bb6e;border-radius:9px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:10px;margin-top:9px;padding:12px 14px;display:grid}._safetyCallout_1670y_1421 p{margin:0;line-height:1.5}._safetyCallout_1670y_1421 strong{display:block}._materialGrid_1670y_77{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;display:grid}._materialCard_1670y_1477{background:#fff;border:1px solid #d8e0db;border-radius:10px;padding:14px 14px 14px 19px;position:relative;overflow:hidden}._materialCard_1670y_1477:before{content:"";width:6px;position:absolute;inset:0 auto 0 0}._materialCard_1670y_1477 span,._materialCard_1670y_1477 strong{display:block}._materialCard_1670y_1477 span{color:#667085;font-size:var(--font-size-small);font-weight:800}._materialCard_1670y_1477 strong{font-size:var(--font-size-body);margin-top:5px;line-height:1.4}._materialCard_1670y_1477._salt_1670y_1543:before{background:#a9b9b4}._materialCard_1670y_1477._sand_1670y_501:before{background:#bf7f3f}._materialCard_1670y_1477._water_1670y_1547:before{background:#3c96bd}._massCheck_1670y_1551{color:#fff;background:#19324e;border-radius:9px;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 13px;margin-top:10px;padding:12px;font-weight:800;display:flex}._massCheck_1670y_1551 svg{color:#ffd166}@media (width<=980px){._header_1670y_51,._cardHeading_1670y_67{flex-direction:column}._cardHeading_1670y_67 p{text-align:left;max-width:none}._flow_1670y_71,._workspace_1670y_69{grid-template-columns:minmax(0,1fr)}._flow_1670y_71 section{min-height:0}}@media (width<=640px){._root_1670y_1,._classroomMode_1670y_27{padding:12px}._headerActions_1670y_125{width:100%}._headerActions_1670y_125 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