@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:"0.19.1"}.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}@layer theme{:root,:host{--font-sans:"Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%}@media(min-width:40rem){.container{max-width:40rem}}@media(min-width:48rem){.container{max-width:48rem}}@media(min-width:64rem){.container{max-width:64rem}}@media(min-width:80rem){.container{max-width:80rem}}@media(min-width:96rem){.container{max-width:96rem}}.mt-6{margin-top:calc(var(--spacing) * 6)}.contents{display:contents}.grid{display:grid}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{font-family:var(--font-sans);color:#202d43;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--bg:#f7f9fc;--surface:#fff;--ink:#202d43;--muted:#7b879b;--line:#e9edf3;--blue:#2461de;--blue-light:#edf3ff;--green:#27836a;--amber:#a36e21;--violet:#7860c7;--shadow:0 3px 14px #20376503;color-scheme:light;background:#f7f9fc}:root[data-theme=dark]{--bg:#111722;--surface:#1a2331;--ink:#e4eaf6;--muted:#a1adc1;--line:#303c4d;--blue:#85acff;--blue-light:#243653;--green:#88cbb0;--amber:#e4bd7e;--violet:#baa3ff;--shadow:none;color-scheme:dark}*{box-sizing:border-box}body{background:var(--bg);min-width:320px;color:var(--ink);margin:0;font-size:14px;line-height:1.7}button,input,select{font:inherit}button,a,select,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button{border:0}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid var(--blue);outline-offset:4px}h1,h2,h3,p{margin:0}h1{letter-spacing:.025em;font-size:28px;font-weight:700;line-height:1.6}h2{font-size:16px;font-weight:650}h3{font-weight:650}svg{flex-shrink:0}.app-shell{min-height:100dvh;display:flex}.sidebar{border-right:1px solid var(--line);background:var(--surface);z-index:30;flex-direction:column;width:222px;padding:36px 22px 24px;display:flex;position:fixed;inset:0 auto 0 0}.brand{letter-spacing:-1px;align-items:center;gap:10px;padding:0 8px;font-size:27px;font-weight:760;display:flex}.brand-mark{background:var(--blue);color:#fff;border-radius:9px;justify-content:center;align-items:center;width:33px;height:35px;font-size:26px;font-weight:800;display:flex;position:relative}.brand-mark span{color:#bcd3ff;font-size:23px;position:absolute;top:-8px;right:1px}.brand-dot,.mobile-brand span{color:var(--blue)}.sidebar-caption{letter-spacing:1.6px;color:#9aa5b6;margin:49px 12px 16px;font-size:9px;font-weight:650}.sidebar nav{gap:7px;display:grid}.sidebar nav a{color:var(--muted);border-radius:8px;align-items:center;gap:13px;min-height:48px;padding:13px 15px;font-size:13px;font-weight:550;display:flex}.sidebar nav a.active{color:var(--blue);background:var(--blue-light)}.sidebar nav a:hover{color:var(--blue)}.sidebar-note{color:var(--muted);margin-top:auto;padding:50px 12px 0;font-size:11px}.status-dot{vertical-align:middle;background:#4c9c85;border-radius:50%;width:6px;height:6px;margin-right:5px;display:inline-block}.sidebar-note p{color:var(--ink);margin:19px 0 24px;font-size:15px;line-height:1.9}.tiny{color:var(--muted);letter-spacing:.6px;font-size:10px}.workspace{width:calc(100% - 222px);min-width:0;margin-left:222px}.topbar{border-bottom:1px solid var(--line);background:var(--surface);justify-content:space-between;align-items:center;height:78px;padding:0 46px;display:flex}.topbar-title{color:var(--muted);letter-spacing:.06em;font-size:12px}.topbar-right{align-items:center;gap:21px;display:flex}.demo-tag{color:var(--muted);letter-spacing:1px;border:1px solid var(--line);white-space:nowrap;border-radius:4px;align-items:center;padding:3px 7px;font-size:9px;font-weight:600;line-height:1.5;display:inline-flex}.help-button{width:44px;height:44px;color:var(--muted);background:0 0;font-size:15px}.avatar{border:3px solid var(--surface);outline:1px solid var(--line);background:var(--blue-light);width:31px;height:31px;color:var(--blue);border-radius:50%;place-items:center;font-size:11px;font-weight:600;display:grid}.mobile-brand,.mobile-nav{display:none}main{outline:none;max-width:1250px;margin:0 auto;padding:40px 46px 12px}.page-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:30px;display:flex}.eyebrow{letter-spacing:1.7px;color:var(--muted);margin-bottom:7px;font-size:9px;font-weight:650;line-height:1.6;display:block}.page-heading p{color:var(--muted);margin-top:6px;font-size:12px}.date-label{color:var(--muted);white-space:nowrap;align-self:flex-start;margin-top:32px;font-size:11px}.hero{background:linear-gradient(113deg,#edf3ff,#f0f5ff 55%,#eaf2ff);border:1px solid #e6edfc;border-radius:13px;grid-template-columns:1.1fr 1fr;min-height:323px;display:grid;position:relative;overflow:hidden}.hero-copy{z-index:1;padding:34px 0 30px 34px}.hero-label{letter-spacing:1.45px;color:#6682b1;align-items:center;gap:8px;font-size:8px;font-weight:650;display:flex}.hero-label>span{background:#4e7bda;border-radius:50%;width:5px;height:5px}.hero h2{letter-spacing:.05em;color:#243f71;margin:15px 0 12px;font-size:29px;font-weight:700;line-height:1.65}.hero p{color:#7487a8;margin-bottom:21px;font-size:12px;line-height:1.95}.button{text-align:center;border-radius:7px;justify-content:center;align-items:center;gap:15px;min-height:46px;padding:12px 20px;font-size:12px;font-weight:600;line-height:1.6;transition:background .15s,transform .15s;display:inline-flex}.button:hover:not(:disabled){transform:translateY(-1px)}.button.primary{color:#fff;background:#2461de;box-shadow:0 4px 9px #245fdc12}.button.primary:hover:not(:disabled){background:#1b53c5}.button.secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.hero-footnote{color:#8c9db8;margin:11px 0 0 3px;font-size:9px;display:block}.hero-art{min-width:0;margin:21px 25px 20px 0;position:relative}.art-grid{background-image:linear-gradient(#cbdaef50 1px,#0000 1px),linear-gradient(90deg,#cbdaef50 1px,#0000 1px);background-size:25px 25px;position:absolute;inset:35px 0 38px;-webkit-mask-image:radial-gradient(#000 5%,#0000 70%);mask-image:radial-gradient(#000 5%,#0000 70%)}.hero-art>svg{opacity:.85;width:100%;height:100%;position:relative}.art-formula{color:#6b8dcd;letter-spacing:1px;font-family:Georgia,serif;font-size:19px;font-style:italic;position:absolute}.formula-top{top:15px;right:30px;transform:rotate(-6deg)}.art-note{color:#7691b8;align-items:center;gap:6px;font-size:9px;display:flex;position:absolute;bottom:7px;right:13px}.art-step{color:#4d78cd;background:#ffffffd6;border:1px solid #d6e2f7;border-radius:8px;padding:9px 12px;font-size:12px;font-weight:600;position:absolute;box-shadow:0 7px 18px #4675bf0a}.art-step small{color:#8393af;margin-left:5px;font-size:9px;font-weight:500}.step-one{top:37%;left:2%;transform:rotate(-5deg)}.step-two{top:48%;right:0;transform:rotate(4deg)}.step-three{bottom:20%;left:36%;transform:rotate(-2deg)}.stats-grid{grid-template-columns:repeat(3,1fr);gap:17px;margin:21px 0 32px;display:grid}.stat-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:10px;align-items:center;gap:16px;padding:20px;display:flex}.stat-icon,.mode-icon{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:43px;height:43px;display:flex}.blue{background:var(--blue-light);color:var(--blue)}.green{color:#3b9876;background:#eef8f3}.amber{color:#bf904b;background:#fcf6ec}.violet{color:#8a72ce;background:#f2effc}.stat-card>div{flex:1}.stat-card>div>span{color:var(--muted);font-size:10px;display:block}.stat-card strong{font-variant-numeric:tabular-nums;font-size:27px;font-weight:650;line-height:1.6}.stat-card strong small{color:var(--muted);margin-left:8px;font-size:10px;font-weight:400}.stat-card>svg{color:#a8b3c3}.section-heading{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.section-heading h2{font-size:15px}.quiet{color:var(--muted);font-size:10px}.mode-grid{grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px;display:grid}.mode-card{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:10px;gap:19px;padding:25px;transition:border-color .15s;display:flex;position:relative;overflow:hidden}.mode-card:hover{border-color:#afc6f3}.mode-icon{border-radius:11px;width:47px;height:47px}.mode-card .eyebrow{letter-spacing:1.4px;margin:2px 0 4px;font-size:8px}.mode-card h3{margin-bottom:8px;font-size:18px}.mode-card p{color:var(--muted);font-size:11px;line-height:1.9}.mode-action{color:var(--blue);align-items:center;gap:14px;margin-top:17px;font-size:10px;font-weight:600;display:flex}.violet-text{color:var(--violet)}.mode-watermark{color:var(--line);opacity:.6;letter-spacing:-2px;font-size:40px;font-weight:650;line-height:1;position:absolute;top:14px;right:14px}.dashboard-lower{grid-template-columns:minmax(0,1.75fr) minmax(0,1fr);gap:22px;display:grid}.panel{background:var(--surface);border:1px solid var(--line);min-width:0;box-shadow:var(--shadow);border-radius:10px}.panel-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;padding:20px 22px;display:flex}.panel-heading h2{font-size:13px}.panel-heading>a{color:var(--muted);align-items:center;gap:4px;min-height:24px;font-size:10px;display:flex}.problem-row{align-items:center;gap:16px;min-width:0;padding:19px 22px;display:flex}.problem-row+.problem-row{border-top:1px solid var(--line)}.problem-row:hover{background:var(--bg)}.problem-number{color:var(--muted);background:var(--bg);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;gap:2px;width:47px;height:39px;font-size:12px;font-weight:500;display:flex}.problem-number small{font-size:8px}.row-main{flex:1;min-width:0}.row-main strong{overflow-wrap:anywhere;font-size:12px;font-weight:600;display:block}.row-main>span{color:var(--muted);margin-top:5px;font-size:9px;display:block}.row-separator{color:#c5cddd;margin:0 4px}.row-status{color:var(--muted);flex-shrink:0;align-items:center;gap:12px;display:flex}.unstarted{color:#a1acbd;border:1px solid var(--line);border-radius:4px;padding:2px 7px;font-size:9px}.rating-pill{border-radius:6px;place-items:center;width:28px;height:28px;font-size:16px;font-weight:600;display:grid}.rating-pill.good{color:var(--green);background:#eaf6f0}.rating-pill.partial{color:var(--amber);background:#fbf3e5}.rating-pill.again{color:#bc676c;background:#fbefef}.progress-panel{flex-direction:column;justify-content:center;padding:25px;display:flex}.progress-panel .eyebrow{letter-spacing:1px;font-size:8px}.progress-panel h2{margin-top:7px;font-size:13px}.progress-value{margin-top:13px;font-size:35px;font-weight:600}.progress-value span{color:var(--muted);margin-left:9px;font-size:11px;font-weight:400}.progress-track{background:var(--line);border-radius:5px;width:100%;height:5px;margin:11px 0 9px;overflow:hidden}.progress-track>span{background:var(--blue);border-radius:5px;height:100%;transition:width .3s;display:block}.progress-panel p{color:var(--muted);font-size:9px}.text-button{min-height:44px;color:var(--blue);background:0 0;justify-content:center;align-items:center;gap:8px;padding:4px;font-size:11px;font-weight:500;display:inline-flex}.progress-panel .text-button{align-self:flex-start;margin-top:15px;font-size:10px}.local-note{color:var(--muted);align-items:center;gap:8px;margin:27px 0 9px;font-size:9px;line-height:1.8;display:flex}.local-note>svg{color:#8c9bb2}.local-note a{white-space:nowrap;color:var(--blue);align-items:center;min-height:44px;margin-left:auto;display:flex}.page-footer{max-width:1250px;color:var(--muted);justify-content:space-between;gap:15px;margin:0 auto;padding:17px 46px 22px;font-size:9px;display:flex}.page-footer>span:last-child{font-size:8px}.mode-toggle{background:var(--line);border-radius:9px;margin-bottom:25px;padding:4px;display:inline-flex}.mode-toggle button{color:var(--muted);background:0 0;border-radius:6px;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:10px 24px;font-size:12px;display:flex}.mode-toggle button.selected{background:var(--surface);color:var(--blue);box-shadow:0 1px 5px #00000008}.filter-bar{gap:18px;margin-bottom:24px;display:flex}.filter-bar label,.settings-panel label{color:var(--muted);flex-direction:column;gap:7px;min-width:0;font-size:11px;display:flex}select{background:var(--surface);border:1px solid var(--line);min-height:46px;color:var(--ink);border-radius:7px;max-width:100%;padding:10px 35px 10px 13px;font-size:13px}.filter-bar label{flex:1;max-width:300px}.count-label{color:var(--muted);margin-left:9px;font-size:10px;font-weight:400}.fine-print{color:var(--muted);margin:16px 0;font-size:10px;line-height:1.9}.empty{text-align:center;padding:54px 24px}.empty h2{margin:17px 0 10px;font-size:18px}.empty p{color:var(--muted);margin:12px 0 24px;font-size:12px}.empty-icon{width:62px;height:62px;color:var(--green);background:#ecf6f2;border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.review-banner{border:1px solid var(--line);background:var(--blue-light);border-radius:10px;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px;padding:25px;display:flex}.review-banner strong{font-size:15px}.review-banner p{color:var(--muted);margin-top:6px;font-size:11px}.history-row{align-items:center;gap:16px;padding:20px 23px;display:flex}.history-row+.history-row{border-top:1px solid var(--line)}.history-rating{color:var(--muted);font-size:11px}.recent-panel{margin-top:24px}.settings-panel{margin-bottom:23px;padding:26px}.settings-panel h2{margin-bottom:17px}.settings-panel p{color:var(--muted);font-size:12px;line-height:2}.settings-panel label{max-width:320px}.button-row{flex-wrap:wrap;gap:12px;margin-top:20px;display:flex}.settings-panel .fine-print{font-size:10px}.message{background:var(--blue-light);border:1px solid var(--line);overflow-wrap:anywhere;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px;padding:14px 17px;font-size:12px;display:flex}.message.error{color:#a33f32;background:#fcf0ed;border-color:#efcfc8}.message button{color:inherit;background:0 0;flex-shrink:0;min-height:44px;text-decoration:underline}.error-text{color:#a33f32!important}.help-panel{border:1px solid var(--line);background:var(--surface);border-radius:9px;margin:16px 46px 0;padding:23px;font-size:12px}.help-panel p{color:var(--muted);margin-top:8px}.practice-page{max-width:760px;margin:0 auto}.practice-breadcrumb{color:var(--muted);justify-content:space-between;align-items:center;margin:0 0 23px;font-size:11px;display:flex}.practice-breadcrumb a{align-items:center;min-height:44px;display:flex}.practice-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:25px;display:flex}.practice-heading h1{margin-bottom:10px;font-size:25px}.practice-meta{color:var(--muted);align-items:center;gap:13px;font-size:10px;display:flex}.practice-meta .demo-tag{font-size:8px}.practice-heading>.text-button{flex-shrink:0}.statement-panel,.step-panel,.full-solution{padding:30px}.card-label{color:var(--muted);justify-content:space-between;align-items:center;gap:12px;margin-bottom:27px;font-size:10px;display:flex}.card-label>span:first-child{color:var(--blue);letter-spacing:1.2px;font-weight:650}.card-label small{color:var(--muted);margin-left:6px;font-size:9px}.content{overflow-wrap:anywhere;min-width:0;font-size:15px;line-height:2}.content p+p{margin-top:13px}.math-scroll{overscroll-behavior-x:contain;min-width:0;max-width:100%;padding:10px 3px;overflow:auto hidden}.math-scroll .katex-display{width:max-content;min-width:100%;margin:10px 0}.math-scroll .katex-display>.katex{text-align:center}.katex{font-size:1.18em}.math-inline{vertical-align:middle;max-width:100%;display:inline-block;overflow-x:auto}.diagram{width:100%;max-width:340px;color:var(--ink);margin:12px auto;display:block}.content figure{margin:0}.thinking-prompt{justify-content:center;align-items:center;gap:14px;margin:30px 0 23px;display:flex}.thinking-prompt p{color:var(--muted);text-align:center;font-size:12px}.thought-line{background:var(--line);width:25px;height:1px}.practice-start{flex-direction:column;align-items:center;gap:10px;margin-bottom:40px;display:flex}.practice-start>.button{width:100%;max-width:350px;min-height:52px;font-size:13px}.practice-toolbar{justify-content:space-between;gap:15px;margin-bottom:12px;display:flex}.step-progress{gap:7px;margin-bottom:27px;display:flex}.step-progress>span{background:var(--line);border-radius:3px;flex:1;height:4px}.step-progress>span.current{background:var(--blue)}.step-progress>span.done{background:#a6c0f5}.step-question{margin-bottom:24px;font-size:20px;line-height:1.85}.hint{background:var(--bg);border-left:2px solid #9ab7eb;border-radius:0 7px 7px 0;margin:14px 0;padding:17px 20px;animation:.2s ease-out arrive}.hint>span{color:var(--blue);letter-spacing:1.3px;font-size:9px;font-weight:600}.hint p{margin-top:6px;font-size:13px;line-height:1.9}.step-controls{flex-wrap:wrap;gap:10px;margin:29px 0 18px;display:flex}.step-controls>.button{flex:1}.step-explanation{margin-top:25px;animation:.2s ease-out arrive}.step-explanation>.eyebrow{color:var(--blue);margin-bottom:14px}.reasoning{background:var(--blue-light);border-radius:7px;margin:21px 0 14px;padding:16px 19px}.reasoning>span{color:var(--blue);font-size:10px;font-weight:600}.reasoning p{margin-top:7px;font-size:12px;line-height:1.9}.stuck-button{border:1px solid var(--line);min-height:44px;color:var(--muted);background:0 0;border-radius:6px;margin-top:12px;padding:10px 13px;font-size:11px}.stuck-button.marked{color:var(--amber);background:#fbf4e8;border-color:#e9d9bb}.step-navigation{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;margin-top:27px;padding-top:20px;display:flex}.solution-divider{background:var(--line);height:1px;margin:25px 0}.solution-step{padding:10px 0 25px}.solution-step+.solution-step{border-top:1px solid var(--line);padding-top:27px}.solution-step-heading{align-items:flex-start;gap:13px;margin-bottom:16px;display:flex}.solution-step-heading h2{font-size:15px;line-height:1.9}.step-badge{width:30px;height:30px;color:var(--blue);background:var(--blue-light);border-radius:7px;flex-shrink:0;place-items:center;font-size:11px;display:grid}.evaluation{text-align:center;padding:36px 0}.evaluation h2{margin-top:6px;font-size:21px}.evaluation>p{color:var(--muted);margin:9px 0 23px;font-size:12px}.rating-buttons{gap:13px;display:flex}.rating-button{border:1px solid var(--line);background:var(--surface);border-radius:9px;flex-direction:column;flex:1;align-items:center;min-width:0;min-height:105px;padding:19px 10px;display:flex}.rating-button strong{font-size:30px;font-weight:500;line-height:1.3}.rating-button span{color:var(--ink);margin-top:12px;font-size:11px}.good{color:var(--green)}.partial{color:var(--amber)}.again{color:#bd666d}.rating-button:hover:not(:disabled){border-color:currentColor}.evaluation .fine-print{margin-top:18px;font-size:10px}.past-stuck{color:var(--amber);margin:12px 0;font-size:11px}.completion-panel{text-align:center;flex-direction:column;align-items:center;padding:50px 25px;display:flex}.completion-check{color:#329372;background:#edf7f2;border-radius:50%;place-items:center;width:66px;height:66px;margin-bottom:23px;display:grid}.completion-panel h2{margin:10px 0 15px;font-size:23px}.completion-rating{font-size:14px}.completion-panel>p:last-of-type{color:var(--muted);margin-top:15px;font-size:12px}.completion-actions{flex-direction:column;gap:12px;width:100%;max-width:310px;margin-top:28px;display:flex}.skip-link{z-index:100;background:var(--surface);color:var(--blue);padding:10px;position:fixed;top:8px;left:8px;transform:translateY(-200%)}.skip-link:focus{transform:none}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes arrive{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@media(min-width:1450px){main{padding-top:48px}.hero{min-height:345px}.hero-copy{padding:38px 0 34px 40px}.hero h2{font-size:32px}}@media(max-width:1150px){.sidebar{width:190px;padding-inline:14px}.workspace{width:calc(100% - 190px);margin-left:190px}main{padding:30px 28px 12px}.topbar,.page-footer{padding-inline:28px}.hero-copy{padding-left:28px}.hero h2{font-size:25px}.hero-art{margin-right:10px}.art-step{padding:7px;font-size:10px}.mode-card{gap:14px;padding:21px}.mode-watermark{font-size:30px}.stats-grid{gap:12px}.stat-card{gap:11px;padding:16px 13px}.dashboard-lower{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:16px}.problem-row{gap:11px;padding:18px 17px}.row-status{gap:7px}.progress-panel{padding:21px}.local-note{align-items:flex-start}.local-note svg{margin-top:5px}}@media(max-width:900px){.sidebar{width:170px;padding-inline:10px}.workspace{width:calc(100% - 170px);margin-left:170px}.sidebar-caption{letter-spacing:1px;font-size:8px}.brand{font-size:25px}.hero{grid-template-columns:1.3fr .8fr}.hero h2{font-size:23px}.hero-art{margin-left:-15px;margin-right:-25px}.art-step,.art-note{display:none}.art-formula{font-size:14px;right:30px}.mode-card{gap:13px;padding:20px 16px}.mode-icon{border-radius:8px;width:36px;height:36px}.mode-card h3{font-size:16px}.mode-card p{font-size:10px}.mode-card .eyebrow{letter-spacing:.8px;font-size:7px}.mode-watermark{display:none}.dashboard-lower{grid-template-columns:1fr}.progress-panel{display:block}.stats-grid{gap:9px}.stat-card{gap:10px;padding:14px 11px}.stat-card>svg{display:none}.stat-icon{border-radius:7px;width:33px;height:35px}.stat-icon svg{width:18px}.stat-card strong{font-size:24px}.stat-card strong small{margin-left:4px;font-size:9px}.date-label{display:none}.review-banner{flex-direction:column;align-items:flex-start}.history-rating{display:none}}@media(max-width:700px){.sidebar{display:none}.workspace{width:100%;margin:0}.topbar{height:calc(65px + env(safe-area-inset-top,0px));padding:env(safe-area-inset-top,0px) max(20px,env(safe-area-inset-right)) 0 max(20px,env(safe-area-inset-left))}.mobile-brand{letter-spacing:-1px;font-size:23px;font-weight:750;display:block}.topbar-title{display:none}.topbar-right{gap:12px}.topbar-right .demo-tag{font-size:8px}.avatar{width:28px;height:28px}.help-button{font-size:14px}main{padding:28px max(20px,env(safe-area-inset-right)) 12px max(20px,env(safe-area-inset-left))}.page-heading{margin-bottom:24px}h1{font-size:25px}.page-heading .eyebrow{letter-spacing:1.3px;margin-bottom:8px;font-size:8px}.page-heading p{margin-top:7px;font-size:11px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:28px 25px}.hero h2{margin-top:14px;font-size:clamp(20px,6vw,26px)}.hero p{margin-bottom:21px;font-size:11px}.hero-art{opacity:.26;pointer-events:none;width:170px;height:190px;position:absolute;top:33px;right:-18px}.art-formula{display:none}.hero-label{letter-spacing:1px;font-size:7px}.hero-footnote{font-size:8px}.hero .button{min-height:46px;padding-inline:21px}.stats-grid{gap:9px;margin:16px 0 29px}.stat-card{border-radius:9px;padding:14px 11px 12px;display:block}.stat-icon{border-radius:7px;width:29px;height:29px;margin-bottom:10px}.stat-icon svg{width:16px}.stat-card>div>span{font-size:9px}.stat-card strong{font-size:25px}.stat-card strong small{margin-left:4px;font-size:8px}.section-heading h2{font-size:14px}.section-heading .quiet{font-size:9px}.mode-grid{grid-template-columns:1fr;gap:13px;margin-bottom:26px}.mode-card{gap:19px;padding:23px}.mode-icon{width:44px;height:44px}.mode-card h3{margin-bottom:8px;font-size:18px}.mode-card p{font-size:11px}.mode-card .eyebrow{letter-spacing:1.1px;font-size:8px}.mode-action{margin-top:14px;font-size:10px}.mode-watermark{font-size:38px;display:block;top:20px;right:19px}.panel-heading{padding:17px}.panel-heading h2{font-size:12px}.problem-row{gap:12px;padding:19px 15px}.problem-number{width:39px;height:36px;font-size:11px}.row-main strong{font-size:11px}.row-main>span{font-size:8px}.row-status{gap:6px}.row-status>svg{width:13px}.unstarted{padding:2px 5px;font-size:8px}.progress-panel{padding:23px}.progress-panel h2{font-size:14px}.progress-value{font-size:33px}.progress-panel .text-button{margin-bottom:-5px}.local-note{flex-wrap:wrap;gap:6px;margin:20px 0 10px;font-size:9px}.local-note>span{flex:1}.local-note>a{min-height:30px;margin-left:22px}.page-footer{padding:16px 20px calc(98px + env(safe-area-inset-bottom,0px));text-align:center;flex-direction:column;align-items:center;gap:7px;font-size:8px}.page-footer>span:last-child{font-size:8px}.mobile-nav{padding:8px max(8px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left));background:var(--surface);border-top:1px solid var(--line);z-index:50;justify-content:space-around;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-nav>a{width:20%;min-height:46px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:5px;font-size:9px;display:flex}.mobile-nav>a.active{color:var(--blue)}.mobile-nav>a.active svg{stroke-width:2.2px}.mode-toggle{width:100%;margin-bottom:22px;display:flex}.mode-toggle button{flex:1;padding:10px;font-size:12px}.filter-bar{flex-direction:column;gap:12px}.filter-bar label{max-width:none;font-size:10px}select{font-size:16px}.review-banner{padding:21px}.review-banner p{font-size:10px}.review-banner .button{width:100%}.settings-panel{padding:23px 20px}.settings-panel .button-row{flex-direction:column}.history-row{gap:13px;padding:20px 16px}.help-panel{margin:15px 20px 0}.message{align-items:flex-start;font-size:11px}.practice-heading{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:22px}.practice-heading h1{font-size:23px}.practice-heading .eyebrow{font-size:9px}.practice-heading>.text-button{align-self:flex-end;min-height:44px;margin-top:-8px}.practice-breadcrumb{margin-top:-8px;margin-bottom:17px}.practice-meta{gap:11px;font-size:10px}.statement-panel,.step-panel,.full-solution{padding:23px 20px}.card-label{margin-bottom:23px;font-size:9px}.content{font-size:14px;line-height:2.1}.katex{font-size:1.12em}.thinking-prompt{gap:9px;margin:24px 0 20px}.thinking-prompt p{font-size:11px}.thought-line{flex-shrink:0;width:12px}.step-question{font-size:18px;line-height:1.9}.step-controls{flex-direction:column;margin-top:23px}.step-controls>.button{min-height:48px}.hint{padding:15px}.hint p{font-size:12px}.reasoning{padding:16px}.reasoning p{font-size:12px}.step-navigation{gap:7px}.step-navigation>.button{gap:8px;padding:12px;font-size:11px}.step-navigation>.text-button{font-size:10px}.solution-step-heading h2{font-size:14px}.solution-step-heading{gap:10px}.rating-buttons{gap:8px}.rating-button{min-height:105px;padding:17px 5px}.rating-button span{font-size:9px}.rating-button strong{font-size:28px}.evaluation h2{font-size:20px}.evaluation>p{font-size:11px}.evaluation .eyebrow{letter-spacing:1px;font-size:8px}.completion-panel{padding:40px 20px}.completion-panel h2{font-size:21px}}@media(max-width:350px){main{padding-inline:16px}.hero-copy{padding:25px 21px}.hero h2{font-size:20px}.hero-label{font-size:6px}.stat-card{padding:12px 9px}.stat-card>div>span{font-size:8px}.stat-card strong{font-size:22px}.stat-card strong small{font-size:7px}.mode-card{gap:15px;padding:21px 18px}.mode-watermark{font-size:32px}.problem-row{gap:9px;padding-inline:12px}.row-status{gap:3px}.unstarted{padding:2px 3px}.statement-panel,.step-panel,.full-solution{padding:21px 16px}.step-navigation>.button{padding:12px 10px}.step-navigation svg{width:14px}.rating-button span{font-size:8px}.rating-buttons{gap:6px}.mobile-nav>a{font-size:8px}}:root[data-theme=dark] .hero{background:linear-gradient(120deg,#1b2c47,#1f304e);border-color:#2e4463}:root[data-theme=dark] .hero h2{color:#e1eaff}:root[data-theme=dark] .hero p{color:#a3b6d2}:root[data-theme=dark] .hero-label{color:#a7bee6}:root[data-theme=dark] .art-step{background:#263d5d;border-color:#375576}:root[data-theme=dark] .green,:root[data-theme=dark] .rating-pill.good,:root[data-theme=dark] .completion-check,:root[data-theme=dark] .empty-icon{color:#88cbb0;background:#203e36}:root[data-theme=dark] .amber,:root[data-theme=dark] .rating-pill.partial,:root[data-theme=dark] .stuck-button.marked{color:#e4bd7e;background:#403729;border-color:#5d4b31}:root[data-theme=dark] .rating-pill.again{color:#ef9da5;background:#482f37}:root[data-theme=dark] .violet{color:#baa3ff;background:#332b49}:root[data-theme=dark] .message.error{color:#ffb8ac;background:#472b2a;border-color:#70433e}@media(prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
