@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Serif:ital,wght@0,400;0,700;1,400;1,700&display=swap";@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,math,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.19.0"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.sat-text{font-family:"Noto Serif",Georgia,Times New Roman,serif;font-size:1.15rem;line-height:1.7}.ui-text{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}:root{--primary: #2458dc;--primary-hover: #1945b5;--primary-light: #edf2ff;--ink: #162440;--muted: #637088;--line: #dfe5ee;--paper: #fafbf9;--success: #247457;--danger: #b73c3c;font-family:Inter,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #638bfa;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em;text-wrap:balance}p{line-height:1.7}h2{font-size:32px;line-height:1.2}h3{font-size:22px;line-height:1.3}svg{flex-shrink:0}button{color:inherit}img{max-width:100%}.wrap{max-width:1240px;padding-inline:40px;margin-inline:auto}.muted{color:var(--muted)}.preserve-lines{white-space:pre-wrap}.text-link{display:inline-flex;align-items:center;gap:9px;border:0;background:none;padding:0;font-weight:600;font-size:14px;color:var(--ink)}.text-link:hover{color:var(--primary)}.button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--primary);color:#fff;border:1px solid transparent;border-radius:8px;padding:15px 23px;font-size:14px;font-weight:600;line-height:1.3;transition:background .18s,transform .18s}.button:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px)}.button.secondary{background:#fff;color:var(--ink);border-color:var(--line)}.button.secondary:hover{background:#f1f4f9}.button.small{padding:11px 17px;font-size:13px}.button.danger{background:var(--danger)}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.icon-button{display:inline-flex;align-items:center;justify-content:center;padding:8px;border:1px solid var(--line);border-radius:6px;background:#fff}.brand{display:flex;align-items:center;gap:0;font-size:23px;letter-spacing:-.035em;font-weight:750;white-space:nowrap}.brand>span:last-child{color:var(--primary)}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;margin-right:9px}.site-header{height:102px;display:flex;align-items:center;justify-content:space-between;gap:24px}.site-header nav{display:flex;gap:32px;font-size:13px;color:#4c5870}.site-header nav a:hover{color:var(--primary)}.hero{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center;padding-block:56px 88px}.hero h1{font-size:clamp(44px,4.7vw,66px);line-height:1.1;font-weight:600;margin-bottom:25px;letter-spacing:-.04em}.hero h1 span{color:var(--primary)}.hero-copy>p{font-size:16px;max-width:420px;color:var(--muted);margin-bottom:28px}.hero-actions{display:flex;align-items:center;gap:25px}.hero-note{display:flex;align-items:center;gap:7px;font-size:10px;margin-top:25px;color:#637088;flex-wrap:wrap}.tiny-check{display:grid;place-items:center;background:#e4efe8;color:var(--success);border-radius:50%;width:17px;height:17px}.hero-demo{padding:30px 0 0}.practice-preview{background:#fff;border-radius:13px;box-shadow:0 18px 60px -22px #25477845;overflow:hidden;transform:rotate(-1deg)}.preview-top{display:flex;align-items:center;justify-content:space-between;background:#172b50;color:#fff;padding:17px 23px;font-size:11px;gap:12px}.preview-top span,.muted{display:inline-flex;align-items:center;gap:7px}.preview-top span:last-child{color:#c8d5ef}.preview-body{padding:24px 30px 15px}.question-number{font-size:11px;font-weight:700;border:1px solid var(--line);padding:5px 7px;border-radius:4px}.preview-body .muted{font-size:10px}.sample-equation{font-family:Georgia,serif;font-size:28px;margin:24px 0 10px;letter-spacing:.015em}.preview-body>p:not(.sample-equation){font-size:13px;color:#47536b;line-height:1.7;max-width:310px}.sample-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.sample-option{display:flex;align-items:center;gap:12px;border:1px solid #d8e0ec;border-radius:6px;background:#fff;padding:11px 13px;font-size:14px;text-align:left}.sample-option>span{border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;width:23px;height:23px;font-size:10px}.sample-option.selected{background:#eef3ff;border-color:var(--primary);color:var(--primary)}.sample-option.correct{border-color:var(--success);background:#edf7f0}.sample-option svg{margin-left:auto}.sample-feedback{min-height:50px;margin-top:20px;font-size:11px;line-height:1.6;color:var(--muted)}.preview-bottom{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:16px 23px;border-top:1px solid var(--line)}.preview-bottom>span{font-size:9px;color:var(--muted);max-width:120px;line-height:1.5}.preview-caption{display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted);margin:23px 5px 0}.preview-caption span:first-child{font-weight:600;color:var(--ink)}.capabilities-strip{border-block:1px solid var(--line);background:#f2f5f9}.capabilities-strip>.wrap{display:flex;justify-content:space-between;gap:20px;padding-block:25px}.capabilities-strip span{display:flex;align-items:center;gap:12px;font-size:12px;font-weight:500;color:#475773}.capabilities-strip svg{width:18px;height:18px;color:#5c79b1}.study-loop{padding-block:100px}.section-intro{display:flex;justify-content:space-between;align-items:end;gap:30px}.section-intro h2{font-size:40px;font-weight:550;margin-bottom:0}.section-intro h2 em{font-family:Georgia,serif;font-weight:400;color:var(--primary)}.section-intro>p{max-width:260px;color:var(--muted);font-size:14px;margin:0 0 5px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;margin-top:55px}.steps article{border-top:1px solid #b5c3da;padding-top:24px}.steps article>span{font-size:10px;font-weight:650;letter-spacing:.08em;color:var(--primary)}.steps h3{font-size:23px;margin:18px 0 13px;font-weight:600}.steps p{color:var(--muted);font-size:14px;margin:0}.subjects{padding-bottom:95px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.section-heading>p{color:var(--muted);font-size:14px}.subject-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:26px}.subject{border-radius:12px;padding:38px 38px 0;overflow:hidden}.math-subject{background:#eaf0fc}.reading-subject{background:#eaf0eb}.subject>svg{margin-bottom:25px;color:#31579b}.subject h3{font-size:29px;font-weight:550}.subject p{font-size:14px;color:#516078;max-width:390px}.subject button{border:0;background:transparent;display:flex;gap:14px;align-items:center;font-weight:650;font-size:13px;padding:10px 0}.subject-art,.reading-art{margin-top:34px;padding-block:27px;border-top:1px solid #c6d4ef;font-family:Georgia,serif;font-size:29px;letter-spacing:-.025em;color:#5475b0}.reading-art{border-color:#cad9cd;color:#577b62}.faq{display:grid;grid-template-columns:1fr 1.35fr;gap:80px;padding-bottom:100px}.faq h2{font-size:39px;font-weight:550}.faq details{border-bottom:1px solid var(--line);padding-block:21px}.faq details:first-child{padding-top:0}.faq summary{list-style:none;font-size:14px;font-weight:600;display:flex;justify-content:space-between;gap:18px;cursor:pointer}.faq summary::-webkit-details-marker{display:none}.faq details[open] summary svg{transform:rotate(180deg)}.faq details p{font-size:13px;color:var(--muted);margin:18px 30px 0 0}.closing{background:#192c50;color:#fff}.closing>.wrap{display:flex;align-items:center;justify-content:space-between;padding-block:68px;gap:40px}.closing h2{font-size:45px;font-weight:500;margin:0}.closing p{font-size:14px;color:#c3d0e6}.closing .button{background:#fff;color:#1c3765}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:25px;padding-block:36px}.site-footer p,.site-footer>span{font-size:10px;color:var(--muted);margin:0}.site-footer .brand{font-size:20px}.skip-link{position:fixed;top:-100px;left:20px;z-index:10000;background:#fff;padding:12px}.skip-link:focus{top:10px}.connection-notice{font-size:12px;color:var(--muted)}.app-shell{display:grid;grid-template-columns:235px minmax(0,1fr);min-height:100dvh;background:#f7f9fc}.app-sidebar{background:#fff;border-right:1px solid var(--line);padding:32px 22px;position:sticky;top:0;height:100dvh;display:flex;flex-direction:column}.app-sidebar .brand{margin:0 10px 48px}.app-sidebar nav{display:grid;gap:7px}.app-sidebar nav a{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);padding:13px 12px;border-radius:7px;font-weight:500}.app-sidebar nav a:hover{background:#f5f7fa}.app-sidebar nav a.active{background:#edf2ff;color:var(--primary)}.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding-top:23px}.account{display:flex;align-items:center;gap:9px;margin-bottom:20px}.avatar{background:#e9eff9;display:grid;place-items:center;border-radius:50%;width:34px;height:34px;color:#335493;flex-shrink:0}.account strong{font-size:11px;display:block;max-width:145px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account small{font-size:10px;color:var(--muted)}.sidebar-bottom .text-link{font-size:12px}.workspace{padding:48px;min-width:0;max-width:1500px;width:100%;margin:auto}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:35px}.page-heading h1{font-size:32px;margin-bottom:12px;font-weight:600}.page-heading p{color:var(--muted);font-size:14px;margin:0}.date-label{font-size:12px;white-space:nowrap;color:var(--muted)}.dashboard-feature{background:#e9effc;border-radius:12px;padding:40px;display:flex;justify-content:space-between;align-items:center;gap:30px}.dashboard-feature h2{font-size:36px;font-weight:550}.dashboard-feature p{font-size:13px;max-width:340px;color:#526482}.feature-type{font-family:Georgia,serif;font-size:33px;line-height:1.5;color:#5276bc}.feature-type em{color:#2458dc}.dashboard-stats{display:grid;grid-template-columns:repeat(3,1fr);padding:32px 0;border-bottom:1px solid var(--line);margin-bottom:40px}.dashboard-stats>div{padding-left:30px;border-left:1px solid var(--line)}.dashboard-stats>div:first-child{padding-left:0;border:0}.dashboard-stats span{display:block;font-size:12px;color:var(--muted);margin-bottom:12px}.dashboard-stats strong{font-size:29px;font-weight:550;font-variant-numeric:tabular-nums}.dashboard-columns{display:grid;grid-template-columns:1.5fr 1fr;gap:36px}.dashboard-columns h2,.contact-section h2{font-size:21px;font-weight:550}.recent-row{border:0;border-bottom:1px solid var(--line);background:none;padding:20px 0;width:100%;display:flex;align-items:center;gap:15px;text-align:left}.row-icon{display:grid;place-items:center;width:36px;height:36px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--primary)}.recent-row strong{font-size:12px;font-weight:550}.recent-row small{display:block;color:var(--muted);font-size:10px;margin-top:7px}.row-result{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:12px}.review-prompt{padding:27px;background:#edf2ed;border-radius:10px}.review-prompt>svg{margin-bottom:23px;color:#52715b}.review-prompt p{font-size:12px;color:#526a59}.review-prompt .text-link{font-size:12px}.empty-state{padding:36px 25px;text-align:center;border:1px dashed #cad4e4;border-radius:10px;margin-top:12px}.empty-state>svg{color:var(--primary);margin-bottom:14px}.empty-state h3{font-size:19px}.empty-state p{color:var(--muted);font-size:13px;max-width:400px;margin-inline:auto}.contact-section{margin-top:42px;border-top:1px solid var(--line);padding-top:30px;font-size:13px}.contact-section p{color:var(--muted)}input,select,textarea{padding:12px;border:1px solid #c8d2e1;border-radius:7px;width:100%;background:#fff;color:var(--ink);font-size:14px}input:focus,select:focus,textarea:focus{outline:2px solid #8daaff;outline-offset:2px}label{display:block;font-size:12px;font-weight:600;margin-bottom:9px}textarea{min-height:110px;resize:vertical}.status{text-align:center;padding:70px 20px;color:var(--muted);font-size:14px}.status h2{color:var(--ink)}.spinner{display:block;border:2px solid #dbe4f4;border-top-color:var(--primary);border-radius:50%;width:24px;height:24px;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.badge{font-size:11px;font-weight:550;padding:5px 8px;border-radius:4px;background:#edf2ff;color:#36579a;white-space:nowrap}.badge.success{background:#e8f3ec;color:#256749}.error-message{color:var(--danger);font-size:13px;line-height:1.6}.dialog{border:0;border-radius:12px;padding:35px;max-width:480px;width:calc(100% - 32px);color:var(--ink);box-shadow:0 25px 90px #122a4940}.dialog::backdrop{background:#14253c85}.dialog h2{font-size:25px;padding-right:24px}.dialog p{color:var(--muted);font-size:14px}.dialog-close{position:absolute;right:14px;top:14px;border:0}.math-text{white-space:pre-wrap;line-height:1.8;overflow-wrap:anywhere}.question-image{display:block;max-height:320px;object-fit:contain;margin:20px auto}.review-question{padding:27px;border-top:1px solid var(--line);background:#fff}.review-question>.section-heading{font-size:13px;margin-bottom:16px}.review-options{display:grid;gap:10px}.review-option{display:flex;align-items:center;gap:15px;border:1px solid var(--line);border-radius:7px;padding:13px;font-size:14px}.review-option>.math-text{flex:1}.review-option small{font-size:10px}.review-option.correct{background:#edf7f0;border-color:#93c5a5}.review-option.incorrect{background:#fff2f2;border-color:#e0aaaa}.tabs{display:flex;gap:7px;margin-block:25px}.tabs button{background:#fff;border:1px solid var(--line);border-radius:7px;padding:11px 18px;font-size:13px}.tabs button[aria-pressed=true]{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.history-item{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;margin-bottom:14px}.history-item summary{padding:22px;display:flex;justify-content:space-between;align-items:center;gap:18px;cursor:pointer;list-style:none;font-size:14px}.history-item summary strong{display:block}.history-item summary small{display:block;font-size:11px;color:var(--muted);margin-top:8px}.history-item summary::-webkit-details-marker{display:none}.history-score{display:flex;align-items:center;gap:16px;font-variant-numeric:tabular-nums}.admin-container{max-width:1100px;margin:auto}.admin-card{padding:26px;border:1px solid var(--line);background:#fff;border-radius:12px;margin-bottom:24px}.admin-card h2{font-size:23px}.input-group{margin-bottom:18px}.explorer-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:22px}.test-sidebar{border:1px solid var(--line);background:#fff;padding:15px;border-radius:10px}.test-item{padding:14px 10px;border:1px solid var(--line);border-radius:6px;margin-bottom:10px;cursor:pointer}.test-item.active{background:var(--primary-light);border-color:var(--primary)}.modal-overlay{position:fixed;inset:0;background:#14253c85;display:grid;place-items:center;z-index:100}.modal-content{background:#fff;padding:30px;border-radius:12px;max-width:500px;width:calc(100% - 32px);max-height:90dvh;overflow:auto}@media(min-width:1500px){.hero{padding-block:80px 110px}}@media(max-width:1100px){.workspace{padding:30px}.app-shell{grid-template-columns:200px minmax(0,1fr)}.app-sidebar{padding:25px 14px}.hero{gap:35px}.hero h1{font-size:52px}.hero-note{font-size:9px}.dashboard-columns{grid-template-columns:1fr}.feature-type{font-size:26px}}@media(max-width:800px){.wrap{padding-inline:24px}.site-header{height:85px}.site-header nav{gap:18px}.hero{gap:40px;grid-template-columns:1fr;padding-block:30px 55px}.hero h1{font-size:55px}.hero-copy>p{max-width:520px}.hero-demo{max-width:560px;width:100%;margin:auto;padding:0}.hero-note{font-size:11px}.hero h1 br:nth-child(2){display:none}.section-intro{align-items:start;flex-direction:column;gap:22px}.section-intro>p{max-width:450px}.study-loop{padding-block:65px}.steps{gap:24px}.steps h3{font-size:20px}.subject{padding:26px 26px 0}.subject h3{font-size:25px}.subject-art,.reading-art{font-size:24px}.faq{gap:30px}.faq h2{font-size:32px}.closing h2{font-size:36px}.site-footer p{display:none}.app-shell{display:block}.app-sidebar{position:static;height:auto;padding:18px 24px;border-right:0;border-bottom:1px solid var(--line);gap:20px}.app-sidebar .brand{margin:0}.app-sidebar nav{display:flex;gap:8px;overflow-x:auto}.app-sidebar nav a{white-space:nowrap;font-size:12px;padding:10px}.sidebar-bottom{display:none}.workspace{padding:28px 24px}.date-label{display:none}.page-heading h1{font-size:29px}.explorer-layout{grid-template-columns:1fr}.dashboard-feature{padding:28px}.feature-type{font-size:23px}.section-heading{flex-wrap:wrap}}@media(max-width:540px){.wrap{padding-inline:20px}.site-header nav{display:none}.hero h1{font-size:45px}.hero-copy>p{font-size:14px}.hero-actions{gap:20px}.hero-note{font-size:9px}.hero-demo{padding:5px}.preview-body{padding:21px}.preview-bottom{padding:15px}.preview-caption{font-size:9px}.capabilities-strip>.wrap{flex-direction:column;padding-block:22px;gap:16px}.section-intro h2{font-size:32px}.steps{grid-template-columns:1fr;gap:29px;margin-top:35px}.steps article{padding-top:20px}.steps h3{margin-top:12px}.subject-grid{grid-template-columns:1fr}.subjects .section-heading>p{margin:0}.subjects{padding-bottom:60px}.faq{grid-template-columns:1fr;padding-bottom:60px}.closing>.wrap{flex-direction:column;align-items:start;padding-block:45px;gap:25px}.closing h2{font-size:36px}.site-footer{padding-block:25px}.site-footer>span{font-size:9px}.workspace{padding:25px 18px}.page-heading h1{font-size:27px}.page-heading p{font-size:12px}.dashboard-feature{padding:26px}.dashboard-feature h2{font-size:30px}.feature-type{display:none}.dashboard-stats>div{padding-left:16px}.dashboard-stats span{font-size:10px}.dashboard-stats strong{font-size:25px}.dashboard-columns{gap:28px}.review-question{padding:18px}.review-option{flex-wrap:wrap}.review-option small{width:100%;padding-left:25px}.tabs{gap:5px}.tabs button{padding:10px;font-size:12px}.history-item summary{padding:18px}.history-score{gap:7px}.app-sidebar{padding-inline:18px}.app-sidebar nav a{font-size:11px}.app-sidebar nav a svg{width:16px}.admin-card{padding:18px}.section-heading h2{font-size:24px}.dialog{padding:27px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media(max-width:800px){.sidebar-bottom{display:flex;position:absolute;right:24px;top:22px;margin:0;padding:0;border:0}.sidebar-bottom .account{display:none}.sidebar-bottom .text-link{font-size:11px}.app-sidebar{position:relative}}