._heroGrid_13f4n_1{grid-template-columns:1.35fr 1fr!important;gap:20px!important}._heroCharts_13f4n_2{grid-template-columns:1fr 1fr;align-items:start;gap:10px;display:grid}._heroCharts_13f4n_2 ._plot_13f4n_3{color:#fff;background:#062b519c;border-color:#4888bd88;padding:6px}._heroCharts_13f4n_2 ._plot_13f4n_3 h3,._heroCharts_13f4n_2 ._plot_13f4n_3 svg text{color:#eaf6ff;fill:#eaf6ff}._heroCharts_13f4n_2 ._plot_13f4n_3 h3{font-size:.8125rem}._heroCharts_13f4n_2 ._plot_13f4n_3 svg{min-width:0}._heroCharts_13f4n_2 ._plot_13f4n_3 figcaption,._heroCharts_13f4n_2 ._legend_13f4n_6{display:none}._heroEquation_13f4n_7{text-align:center;grid-column:1/-1;font:italic 1.3rem Georgia,serif;color:#fff!important}._heroBadges_13f4n_8{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}._heroBadges_13f4n_8 span{color:#d9efff;align-items:center;gap:6px;font-size:.8125rem;display:flex}._heroBadges_13f4n_8 svg{color:#60d5ff;width:19px;height:19px}._lessonLayout_13f4n_11{margin-top:3px;grid-template-columns:205px minmax(0,1fr) 244px!important}._unitLinks_13f4n_12{gap:0;display:grid}._outlineHeading_13f4n_13{color:#06417a;background:#e6f2ff;padding:10px 14px;font-size:.9375rem!important}._unitLinks_13f4n_12 a[aria-current=page]{color:#003b84;border-left:3px solid #0066ef;font-weight:750;background:#e0f0ff!important}._unitLinks_13f4n_12 a>small{color:#38678e;min-width:26px;font-size:.8125rem}._concepts_13f4n_16{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;display:grid}._concept_13f4n_16{background:linear-gradient(120deg,#fff,#f3faff);border:1px solid #d4e7fb;border-radius:6px;padding:12px;scroll-margin-top:90px}._concept_13f4n_16>header{align-items:center;gap:9px;margin-bottom:7px;display:flex}._concept_13f4n_16>header>span{color:#fff;background:#0066ef;border-radius:50%;flex:0 0 35px;place-items:center;width:35px;height:35px;font-size:1.1rem;font-weight:750;display:grid}._concept_13f4n_16 h2{color:#004897!important;font-size:1rem!important;font-weight:750!important;line-height:1.3!important}._concept_13f4n_16 p{font-size:.9375rem;line-height:1.55}._concept_13f4n_16 details{font-size:.9375rem}._concept_13f4n_16 details summary{color:#005dc8;cursor:pointer;min-height:36px;padding:7px 0;font-size:.875rem}._concept_13f4n_16 details p{margin:8px 0!important}._concept_13f4n_16:has(details[open]){grid-column:1/-1}._concept_13f4n_16:last-child:not(:has(details[open])){grid-column:span 3}._formula_13f4n_26{color:#004293;overflow-wrap:anywhere;background:#edf7ff;border-radius:4px;padding:8px;font:1.08rem/1.65 Georgia,serif;margin:8px 0!important}._two_13f4n_27{grid-template-columns:1fr 1fr;align-items:start;gap:9px;display:grid}._lab_13f4n_28{gap:10px;display:grid}._datasetLabel_13f4n_29{color:#3a587c;font-size:.875rem;line-height:1.5}._datasetLabel_13f4n_29 strong{color:#006449;background:#ddf9ec;border-radius:4px;padding:3px 6px}._toolbar_13f4n_31{flex-wrap:wrap;align-items:center;gap:7px;display:flex}._toolbar_13f4n_31 button,._controls_13f4n_32>button{color:#0057bd;cursor:pointer;background:#fff;border:1px solid #adcef6;border-radius:4px;min-height:42px;padding:8px 10px;font-size:.875rem}._modes_13f4n_33{flex-wrap:wrap;flex:auto;gap:4px;display:flex}._modes_13f4n_33 button{background:#eaf4ff}._modes_13f4n_33 button[aria-pressed=true]{color:#fff;background:#0066ef;border-color:#0066ef}._preset_13f4n_35{align-items:center;gap:6px;font-size:.8125rem;display:flex}._preset_13f4n_35 select{color:#174a7c;background:#fff;border:1px solid #b9d8fa;border-radius:4px;max-width:100%;min-height:42px;padding:8px;font-size:.875rem}._labGrid_13f4n_37{grid-template-columns:175px minmax(0,1fr);align-items:start;gap:10px;display:grid}._controls_13f4n_32{background:#f1f8ff;border:1px solid #d0e5fa;border-radius:5px;gap:6px;padding:10px;display:grid}._controls_13f4n_32 h3,._resultCard_13f4n_39 h3,._plot_13f4n_3 h3{color:#003d88;font-size:.9375rem;margin:0 0 8px!important}._controls_13f4n_32 label{color:#214e7c;font-size:.875rem;font-weight:600}._controls_13f4n_32 label>input:not([type=checkbox]){color:#073d80;background:#fff;border:1px solid #aacdf5;border-radius:4px;width:100%;min-height:40px;margin-top:5px;padding:7px;font-size:1rem;display:block}._controls_13f4n_32>input[type=range]{accent-color:#0066ef;width:100%;min-height:28px}._controls_13f4n_32 ._primary_13f4n_43{color:#fff;background:#0066ef;border-color:#0066ef;margin-top:8px}._controls_13f4n_32 ._checkbox_13f4n_44{align-items:center;gap:8px;margin-top:8px;display:flex}._toolbar_13f4n_31 button:disabled,._controls_13f4n_32>button:disabled{color:#577086;cursor:not-allowed;background:#eaf0f7;border-color:#ccd8e5}._labResults_13f4n_46{gap:10px;min-width:0;display:grid}._plots_13f4n_47{grid-template-columns:1.15fr 1fr;gap:8px;display:grid}._plot_13f4n_3{background:#fff;border:1px solid #d2e6fa;border-radius:5px;min-width:0;margin:0;padding:10px}._plot_13f4n_3 svg{width:100%;height:auto;display:block}._plot_13f4n_3 svg text{fill:#2c517b;font:13px Arial,sans-serif}._plot_13f4n_3 figcaption{color:#3b5d80;margin-top:8px;font-size:.8125rem;line-height:1.4}._legend_13f4n_6{color:#30577e;flex-wrap:wrap;gap:7px 12px;font-size:.8125rem;display:flex}._legend_13f4n_6 span{align-items:center;gap:5px;display:flex}._legend_13f4n_6 i{background:#0064e5;border-radius:50%;width:7px;height:7px;display:inline-block}._legend_13f4n_6 ._freeLine_13f4n_55{background:0 0;border-top:2px solid #d32e59;border-radius:0;width:15px;height:0}._legend_13f4n_6 ._originLine_13f4n_56{background:0 0;border-top:2px dashed #6264a9;border-radius:0;width:15px;height:0}._legend_13f4n_6 ._originPoint_13f4n_57{background:#fff;border:1.5px solid #a84100;border-radius:0;width:7px;height:7px}._resultCard_13f4n_39{background:#fff;border:1px solid #cfe3fa;border-radius:5px;padding:10px}._resultCard_13f4n_39 dl{margin:0}._resultCard_13f4n_39 dl>div{border-bottom:1px solid #e2edf8;padding:5px 0}._resultCard_13f4n_39 dt{color:#3a5c81;font-size:.8125rem}._resultCard_13f4n_39 dd{color:#03438f;margin:2px 0;font-size:1rem;font-weight:750}._resultCard_13f4n_39 small{color:#3c5c7d;margin-top:8px;font-size:.8125rem;line-height:1.4;display:block}._tableWrap_13f4n_62{background:#fff;border:1px solid #d6e8fa;border-radius:5px;max-width:100%;padding:7px;overflow:auto}._tableWrap_13f4n_62 table{min-width:310px}._tableWrap_13f4n_62 caption{text-align:left;color:#456482;padding:0 0 9px;font-size:.875rem}._tableWrap_13f4n_62 input{color:#164676;background:#fff;border:1px solid #bbd5f4;border-radius:3px;width:100%;min-width:100px;min-height:38px;padding:6px;font-size:.9375rem}._tableWrap_13f4n_62 td{font-variant-numeric:tabular-nums}._patterns_13f4n_66{grid-template-columns:1fr 1fr;gap:8px;display:grid}._patterns_13f4n_66 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svg{color:#6bd4ff!important}._tutor_13f4n_72 p{font-size:.9375rem}._tutor_13f4n_72 a{border-radius:4px;margin-top:12px;display:block;text-align:center!important;color:#fff!important;background:#0066ef!important;padding:10px!important}._practice_13f4n_74{gap:10px;display:grid}._practice_13f4n_74 article{background:#fff;border:1px solid #d4e6fb;border-radius:5px;padding:12px}._practice_13f4n_74 h3{color:#054489;font-size:1rem;margin-bottom:6px!important}._practice_13f4n_74 details{margin-top:8px}._practice_13f4n_74 summary{color:#0054bc;cursor:pointer;min-height:40px;padding:8px 0;font-size:.875rem}._practice_13f4n_74 p,._practice_13f4n_74 li{font-size:.9375rem}._practice_13f4n_74 ol{padding-left:21px}._practice_13f4n_74 li{margin-bottom:8px}._formulaTable_13f4n_75 th{overflow-wrap:normal;width:42%}._sources_13f4n_75{font-size:.875rem}._sources_13f4n_75 summary{cursor:pointer;color:#0057b9;min-height:44px;padding:10px 0;font-weight:650}._sources_13f4n_75 ul{padding-left:20px}._sources_13f4n_75 li{margin-bottom:9px}._notes_13f4n_75{font-size:.9375rem}._notes_13f4n_75 li{margin-bottom:8px}@media (width>=1700px){._lessonLayout_13f4n_11{grid-template-columns:210px minmax(0,1fr) 244px!important}}@media (width<=1450px){._plots_13f4n_47{grid-template-columns:1fr}._labGrid_13f4n_37{grid-template-columns:170px minmax(0,1fr)}._concepts_13f4n_16{grid-template-columns:repeat(2,minmax(0,1fr))}._concept_13f4n_16:last-child:not(:has(details[open])){grid-column:auto}._heroCharts_13f4n_2{grid-template-columns:1fr}._heroCharts_13f4n_2>._plot_13f4n_3:nth-child(2){display:none}._heroCharts_13f4n_2>._plot_13f4n_3{justify-self:center;max-width:330px}._heroEquation_13f4n_7{font-size:1.05rem}}@media (width<=1150px){._lessonLayout_13f4n_11{grid-template-columns:165px minmax(0,1fr)!important}._labGrid_13f4n_37{grid-template-columns:1fr}._controls_13f4n_32{grid-template-columns:1fr 1fr}._controls_13f4n_32>h3,._controls_13f4n_32>p,._controls_13f4n_32>button{grid-column:1/-1}._controls_13f4n_32>input[type=range]{align-self:center}._heroGrid_13f4n_1{grid-template-columns:1.7fr 1fr!important}}@media (width<=800px){._heroGrid_13f4n_1{grid-template-columns:1fr!important}._heroCharts_13f4n_2{display:none}._lessonLayout_13f4n_11{grid-template-columns:1fr!important}._concepts_13f4n_16{grid-template-columns:1fr 1fr}._unitLinks_13f4n_12{grid-template-columns:1fr!important}._two_13f4n_27{grid-template-columns:1fr}}@media (width<=540px){._concepts_13f4n_16{grid-template-columns:1fr}._concept_13f4n_16:last-child:not(:has(details[open])){grid-column:auto}._controls_13f4n_32{grid-template-columns:1fr}._controls_13f4n_32>*{grid-column:auto!important}._preset_13f4n_35{width:100%;display:grid}._toolbar_13f4n_31>button{flex:1}._modes_13f4n_33{grid-template-columns:1fr 1fr;width:100%;display:grid}._plots_13f4n_47{grid-template-columns:1fr}}@media print{._heroCharts_13f4n_2,._heroBadges_13f4n_8,._lab_13f4n_28,._toolbar_13f4n_31,._controls_13f4n_32,._checklist_13f4n_71,._tutor_13f4n_72{display:none!important}._concepts_13f4n_16{display:block}._concept_13f4n_16{break-inside:avoid;margin-bottom:9px}._concept_13f4n_16 details{display:block}._lessonLayout_13f4n_11{display:block!important}._two_13f4n_27{display:block}}@media (width<=1150px){._lessonLayout_13f4n_11>aside:last-child{grid-column:2;grid-template-columns:1fr 1fr}}@media (width<=800px){._lessonLayout_13f4n_11>aside:last-child{grid-column:1}}@media (width<=540px){._lessonLayout_13f4n_11>aside:last-child{grid-template-columns:1fr}}