@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,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.25"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.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 .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{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 .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.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 .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.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;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;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.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 .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 .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>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{color-scheme:dark;--bg: #0f172a;--bg-soft: #16213a;--bg-softer: #19253f;--border: #1f2a44;--primary: #38bdf8;--primary-soft: rgba(56, 189, 248, .12);--secondary: #a855f7;--danger: #f87171;--success: #34d399;--text: #e2e8f0;--text-muted: #94a3b8;--card-shadow: 0 10px 30px rgba(8, 29, 64, .25);--card-bg: #141f35;--card-border: rgba(56, 189, 248, .08);--header-bg: rgba(15, 23, 42, .85);--nav-button-accent-border: rgba(56, 189, 248, .4);--modal-backdrop-bg: rgba(8, 15, 30, .75);--modal-bg: #0b1529;--modal-border: rgba(56, 189, 248, .25);--modal-shadow: 0 24px 60px rgba(1, 9, 18, .65);--session-controls-bg: rgba(12, 20, 38, .92);--session-controls-border: rgba(56, 189, 248, .16);--session-controls-shadow: 0 12px 32px rgba(6, 16, 32, .55);--stat-pill-bg: rgba(148, 163, 184, .12);--answer-option-bg: rgba(23, 35, 58, .6);--answer-option-border: var(--border);--answer-option-selected-bg: rgba(56, 189, 248, .08);--answer-option-correct-bg: rgba(52, 211, 153, .12);--answer-option-incorrect-bg: rgba(248, 113, 113, .1);--palette-item-bg: rgba(15, 23, 42, .8);--palette-item-correct-bg: rgba(52, 211, 153, .18);--palette-item-incorrect-bg: rgba(248, 113, 113, .15);--palette-item-answered-bg: rgba(148, 163, 184, .16);--chart-rim: rgba(15, 23, 42, .85);--chart-shadow: 0 12px 30px rgba(8, 20, 33, .5);--callout-bg: rgba(15, 23, 42, .6);--callout-border: rgba(56, 189, 248, .22);--list-card-bg: rgba(16, 26, 43, .65);--list-card-border: rgba(56, 189, 248, .12);--answer-card-bg: rgba(12, 21, 39, .65);--answer-card-border: rgba(56, 189, 248, .12);--table-zebra-bg: rgba(15, 23, 42, .5);--table-bg: rgba(10, 18, 34, .8)}:root[data-theme=dark]{color-scheme:dark}:root[data-theme=light]{color-scheme:light;--bg: #f8fafc;--bg-soft: #f1f5f9;--bg-softer: #e2e8f0;--border: #cbd5f5;--primary: #0ea5e9;--primary-soft: rgba(14, 165, 233, .12);--secondary: #7c3aed;--danger: #ef4444;--success: #10b981;--text: #0f172a;--text-muted: #475569;--card-shadow: 0 12px 24px rgba(15, 23, 42, .06);--card-bg: #ffffff;--card-border: rgba(148, 163, 184, .35);--header-bg: rgba(248, 250, 252, .95);--nav-button-accent-border: rgba(2, 132, 199, .5);--modal-backdrop-bg: rgba(15, 23, 42, .35);--modal-bg: #ffffff;--modal-border: rgba(148, 163, 184, .35);--modal-shadow: 0 24px 50px rgba(15, 23, 42, .12);--session-controls-bg: rgba(248, 250, 252, .95);--session-controls-border: rgba(148, 163, 184, .4);--session-controls-shadow: 0 12px 30px rgba(15, 23, 42, .12);--stat-pill-bg: rgba(148, 163, 184, .16);--answer-option-bg: rgba(241, 245, 249, .85);--answer-option-border: rgba(148, 163, 184, .5);--answer-option-selected-bg: rgba(14, 165, 233, .18);--answer-option-correct-bg: rgba(16, 185, 129, .22);--answer-option-incorrect-bg: rgba(239, 68, 68, .18);--palette-item-bg: rgba(226, 232, 240, .85);--palette-item-correct-bg: rgba(16, 185, 129, .26);--palette-item-incorrect-bg: rgba(239, 68, 68, .22);--palette-item-answered-bg: rgba(148, 163, 184, .3);--chart-rim: rgba(226, 232, 240, .95);--chart-shadow: 0 10px 22px rgba(15, 23, 42, .12);--callout-bg: rgba(226, 232, 240, .85);--callout-border: rgba(148, 163, 184, .4);--list-card-bg: rgba(255, 255, 255, .92);--list-card-border: rgba(148, 163, 184, .35);--answer-card-bg: rgba(248, 250, 252, .9);--answer-card-border: rgba(148, 163, 184, .35);--table-zebra-bg: rgba(226, 232, 240, .7);--table-bg: rgba(255, 255, 255, .95)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100%}body{line-height:1.5}a{color:inherit}button{font-family:inherit}input,select,textarea{font-family:inherit;background:var(--bg-softer);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:10px 12px}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);outline-offset:1px}.app-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.app-header{padding:24px 32px;border-bottom:1px solid rgba(56,189,248,.18);display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-start;background:var(--bg);position:sticky;top:0;z-index:10}.brand{font-size:20px;font-weight:600;letter-spacing:.4px}.nav-buttons{display:flex;gap:12px;flex-wrap:wrap}.app-header-brand{display:inline-flex;align-items:center;gap:12px}.app-header-controls{display:flex;align-items:center;gap:16px;margin-left:auto;flex-wrap:wrap;justify-content:flex-end}.app-header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.nav-button{padding:9px 16px;border-radius:999px;background:transparent;border:1px solid var(--border);color:var(--text);cursor:pointer;transition:background .2s,border .2s,color .2s}.nav-button.active{background:var(--primary-soft);border-color:var(--nav-button-accent-border);color:var(--primary)}.nav-button:hover{border-color:var(--nav-button-accent-border)}.main{flex:1;overflow:auto;padding:24px 28px;display:flex;flex-direction:column;gap:20px}.grid{display:grid;gap:16px}.grid.two{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:18px;padding:20px;box-shadow:var(--card-shadow)}.overview-stats-card{display:grid;gap:14px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.summary-progress{display:grid;gap:10px}.summary-usage{display:grid;gap:8px}.quick-actions-card{display:grid;gap:16px;align-content:start}.quick-actions{display:flex;flex-wrap:wrap;gap:12px}.category-strength-card{display:grid;gap:16px;grid-template-rows:auto 1fr;align-content:stretch}.scroll-pane{height:260px;overflow-y:auto;padding-right:6px}.section-title{display:flex;align-items:center;justify-content:space-between}.section-title h1{margin:0;font-size:28px}.section-title p{margin:0;color:var(--text-muted)}.stat-pill{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;background:var(--stat-pill-bg);border-radius:999px;font-size:13px}.button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:10px;padding:12px 18px;background:var(--primary);color:#0b1120;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .2s ease,box-shadow .2s ease}.button:hover{transform:translateY(-1px);box-shadow:0 12px 22px #38bdf838}.button.secondary{background:transparent;border:1px solid var(--border);color:var(--text);box-shadow:none}.button.secondary:hover{border-color:var(--nav-button-accent-border);transform:none}.button.danger{background:#f871712e;color:var(--danger);border:1px solid rgba(248,113,113,.45);box-shadow:none}.button.danger:hover{transform:none;border-color:#f8717199;background:#f871713d}.button.ghost{background:transparent;border:1px dashed var(--border);color:var(--text-muted);box-shadow:none}.button.ghost:hover{color:var(--text);border-color:var(--nav-button-accent-border);transform:none}.table{width:100%;border-collapse:collapse;font-size:14px;background:var(--table-bg);border-radius:16px;overflow:hidden}.table thead{background:#0f172a59}.table th,.table td{padding:12px 16px;border-bottom:1px solid var(--border);text-align:left}.table tbody tr:nth-child(odd){background:var(--table-zebra-bg)}.table tbody tr:last-child td{border-bottom:none}.badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 10px;border-radius:999px;background:var(--palette-item-bg);color:var(--text-muted);font-size:12px}.page-centered{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:40px 16px}.spinner{width:36px;height:36px;border-radius:50%;border:4px solid rgba(148,163,184,.25);border-top-color:var(--primary);animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.toast{position:fixed;top:28px;right:28px;z-index:40;padding:14px 18px;border-radius:12px;background:#080f1ed9;border:1px solid rgba(56,189,248,.35);color:var(--text);box-shadow:0 12px 32px #04081273}.toast.error{border-color:#f8717180}.pill-group{display:flex;gap:12px;flex-wrap:wrap}.pill{padding:8px 12px;border-radius:999px;background:var(--palette-item-bg);font-size:13px}.pill.small{padding:4px 10px;font-size:12px}.empty-state{padding:24px;border-radius:16px;background:#0f172a73;border:1px dashed rgba(148,163,184,.25);text-align:center;color:var(--text-muted)}.layout-landing{min-height:100vh;background:var(--bg);color:var(--text)}.landing-nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:24px 32px;justify-content:flex-start}.landing-brand{display:inline-flex;align-items:center;gap:12px}.brand-link{display:inline-flex;align-items:center;color:inherit;text-decoration:none;gap:10px}.brand-link:hover,.brand-link:focus-visible{text-decoration:underline;text-underline-offset:4px}.landing-nav-auth{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap}.primary-nav{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.primary-nav-link{color:var(--text-muted);text-decoration:none;font-weight:600;font-size:14px;padding:9px 14px;border-radius:999px;border:1px solid transparent;transition:color .2s ease,border .2s ease,background .2s ease}.primary-nav-link:hover,.primary-nav-link:focus-visible{color:var(--text);border-color:#38bdf840;background:#38bdf81f;outline:none}.primary-nav-link.active{color:var(--primary);border-color:#38bdf866;background:#38bdf829}.primary-nav--compact{gap:8px}.primary-nav--compact .primary-nav-link{font-size:13px;padding:6px 12px}.landing-hero{display:grid;gap:18px;padding:48px 32px 72px;max-width:1040px;margin:0 auto}.landing-hero h1{font-size:clamp(36px,4vw,64px);margin:0;line-height:1.05}.landing-hero p{font-size:18px;color:var(--text-muted);margin:0;max-width:680px}.landing-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.landing-actions>*{display:inline-flex}.landing-actions .button{min-width:150px}.landing-columns{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));padding:0 32px 56px;max-width:1100px;margin:0 auto}.landing-column{background:#0f172ac7;border-radius:22px;padding:24px;border:1px solid rgba(56,189,248,.18);box-shadow:0 16px 32px #081d4047;display:grid;gap:14px}.landing-column h3{margin:0;font-size:22px}.landing-column p{margin:0;color:var(--text-muted)}.landing-column ul{margin:0;padding-left:20px;display:grid;gap:8px;color:var(--text-muted);font-size:15px}.landing-footer{border-top:1px solid rgba(148,163,184,.18);margin-top:40px;padding:28px 32px 32px;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}.landing-footer-meta p{margin:0;color:var(--text-muted);max-width:620px}.landing-footer-meta a{color:var(--primary);font-weight:600;text-decoration:none}.landing-footer-meta a:hover{text-decoration:underline}.landing-footer-links{display:flex;gap:20px;flex-wrap:wrap}.landing-footer-links a{color:var(--primary);text-decoration:none;font-weight:600}.landing-footer-links a:hover{text-decoration:underline}.legal-layout{min-height:100vh;background:var(--bg);color:var(--text);display:flex;align-items:flex-start;justify-content:center;padding:48px 16px}.legal-card{width:min(840px,100%);background:#0f172ad1;border:1px solid rgba(56,189,248,.16);border-radius:22px;padding:28px 32px;box-shadow:0 18px 32px #081d4052;display:grid;gap:20px}.legal-back{display:flex;justify-content:flex-start}.legal-back .button{text-decoration:none}.legal-card section{display:grid;gap:12px}.legal-card h1{margin:0}.legal-card h2{margin-bottom:4px;font-size:20px}.legal-card p,.legal-card ul{color:var(--text-muted)}.legal-card ul{margin:0;padding-left:20px;display:grid;gap:8px}.legal-card a{color:var(--primary);font-weight:600;text-decoration:none}.legal-card a:hover{text-decoration:underline}.inline-link{color:var(--primary);font-weight:600}.inline-link:hover{text-decoration:underline}.library-objective{margin-top:16px;display:grid;gap:8px}.library-objective h4{margin:0;font-size:15px;color:var(--text)}.landing-card-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));padding:0 36px 64px;max-width:1080px;margin:0 auto}.landing-card{background:#0f172ab8;border-radius:20px;padding:24px;border:1px solid rgba(56,189,248,.16);box-shadow:0 18px 36px #081d4059}.landing-card h3{margin-top:0;margin-bottom:10px;font-size:20px}.landing-card p{margin:0;color:var(--text-muted)}.catalog{max-width:1080px;margin:0 auto 64px;padding:0 32px;display:grid;gap:20px}.catalog-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.catalog-controls input[type=search]{flex:1;min-width:240px}.catalog-controls select{min-width:200px}.catalog-results{margin-left:auto;font-size:14px;color:var(--text-muted)}.catalog-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-auto-rows:minmax(0,1fr)}.catalog-card{border-radius:18px;padding:20px;background:#0f172abd;border:1px solid rgba(56,189,248,.18);display:grid;gap:14px;box-shadow:0 16px 28px #081d4047}.catalog-card-header{display:flex;flex-direction:row;justify-content:space-between;gap:14px;align-items:flex-start}.catalog-card-header h3{margin:0 0 8px;font-size:20px}.catalog-card-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;color:var(--text-muted);font-size:14px}.catalog-badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 12px;border-radius:999px;background:#38bdf824;border:1px solid rgba(56,189,248,.3);color:var(--primary);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;line-height:1.2;min-height:28px;max-width:100%;text-align:center;word-break:break-word;flex:0 1 auto}.catalog-rating{font-size:14px}.catalog-meta{font-size:14px;color:var(--text-muted)}.catalog-card-summary{margin:0;color:var(--text-muted);line-height:1.6}.catalog-card-footer{display:flex;flex-wrap:wrap;gap:6px}.catalog-tag{display:inline-flex;align-items:center;justify-content:center;padding:4px 12px;border-radius:999px;background:#94a3b82e;color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px;line-height:1.2;min-height:28px;max-width:100%;text-align:center;word-break:break-word;flex:0 1 auto}.catalog-empty{border-radius:18px;padding:28px;text-align:center;background:#0f172aa3;border:1px dashed rgba(56,189,248,.22);box-shadow:0 12px 24px #081d403d}.catalog-empty h3{margin-top:0;margin-bottom:10px}.catalog-empty p{margin:0 0 12px;color:var(--text-muted)}.article-subtitle{display:inline-flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;color:var(--text-muted);font-size:15px}.article-content{max-width:900px;margin:0 auto 120px;padding:0 36px}.article-card{border-radius:20px;background:#0f172ab8;border:1px solid rgba(56,189,248,.2);box-shadow:0 22px 40px #05122473;padding:32px;display:grid;gap:28px}.article-meta{display:flex;justify-content:flex-end}.article-meta a{color:var(--primary);font-weight:600;text-decoration:none}.article-meta a:hover{text-decoration:underline}.article-section h2{margin:0 0 12px}.article-section ul{margin:0;padding-left:20px;display:grid;gap:8px;color:var(--text-muted)}.article-section li{line-height:1.6}.login-card{max-width:420px;margin:80px auto;padding:32px;background:#0f172abf;border-radius:20px;border:1px solid rgba(56,189,248,.18);box-shadow:0 18px 40px #05122473}.login-card h1{margin-top:0}.login-card form{display:grid;gap:18px}.helper-text{font-size:14px;color:var(--text-muted)}.alert{border-radius:12px;padding:16px;border:1px solid rgba(56,189,248,.2);background:#0f172a99;color:var(--text);font-size:14px}.alert.error{border-color:#f8717166;background:#f871711f}.session-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(280px,2fr);gap:24px;align-items:flex-start}.session-view{display:grid;gap:20px;position:relative;padding-bottom:160px}.session-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}.session-tags{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.session-header-meta{display:flex;align-items:center}.flag-pill{background:#a855f742}.review-pill{background:#38bdf833;color:var(--primary)}.session-helper{display:grid;gap:6px}.session-card{background:var(--answer-card-bg);border:1px solid var(--answer-card-border);border-radius:20px;padding:24px;display:grid;gap:18px}.session-options{display:grid;gap:12px}.answer-option{border-radius:12px;padding:14px;background:var(--answer-option-bg);border:1px solid var(--answer-option-border);cursor:pointer;transition:transform .15s ease,border .15s ease,background .15s ease}.answer-option-header{display:flex;align-items:baseline;gap:12px}.answer-label{font-weight:600;font-size:16px}.question-text{font-size:16px;line-height:1.55;display:grid;gap:10px}.answer-text{font-size:16px;line-height:1.55;text-align:left;display:block}.answer-text p{margin:0;font-size:inherit;line-height:inherit}.explanation{margin-top:8px;color:var(--text-muted);font-size:14px;text-align:left}.answer-option:hover{transform:translateY(-1px)}.answer-option.selected{background:var(--answer-option-selected-bg);border-color:#38bdf873}.answer-option.correct{background:var(--answer-option-correct-bg);border-color:#34d3998c}.answer-option.incorrect{background:var(--answer-option-incorrect-bg);border-color:#f8717166}.answer-option.read-only{cursor:default}.answer-option.read-only:hover{transform:none}.session-side{background:var(--list-card-bg);border:1px solid var(--list-card-border);border-radius:20px;padding:24px;display:grid;gap:16px}.session-controls{position:fixed;left:50%;bottom:28px;transform:translate(-50%);width:min(1040px,calc(100% - 56px));box-sizing:border-box;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 20px;border-radius:16px;background:var(--session-controls-bg);border:1px solid var(--session-controls-border);box-shadow:var(--session-controls-shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);flex-wrap:wrap;z-index:50}.controls-left,.controls-right{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.controls-left{flex:1}.controls-right{justify-content:flex-end}.session-meta{display:grid;gap:8px;font-size:14px}.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(36px,1fr));gap:8px}.palette button{border:none;border-radius:10px;padding:10px 0;background:var(--palette-item-bg);color:var(--text);cursor:pointer;font-weight:600}.palette button.correct{background:var(--palette-item-correct-bg)}.palette button.incorrect{background:var(--palette-item-incorrect-bg)}.palette button.answered{background:var(--palette-item-answered-bg)}.palette button.selected{border:2px solid rgba(56,189,248,.6)}.history-table{width:100%;border-collapse:collapse;font-size:14px}.history-table th,.history-table td{padding:12px;text-align:left;border-bottom:1px solid rgba(148,163,184,.15)}.history-table tbody tr:nth-child(odd){background:#0f172a66}.table-actions{display:flex;gap:8px;flex-wrap:wrap}.chip-button{padding:6px 12px;border-radius:999px;border:1px solid var(--border);background:transparent;color:var(--text);font-size:13px;cursor:pointer;transition:background .2s ease,border .2s ease,color .2s ease}.chip-button:hover{border-color:var(--nav-button-accent-border);background:#38bdf81a}.chip-button.secondary{border-color:#38bdf859;background:#38bdf81f;color:var(--primary)}.chip-button.secondary:hover{background:#38bdf833}.chip-button.danger{border-color:#f8717173;background:#f871711f;color:var(--danger)}.chip-button.danger:hover{border-color:#f87171a6;background:#f871712e}.export-card{background:#0f172a8c;border:1px solid rgba(56,189,248,.18);border-radius:20px;padding:24px;display:grid;gap:14px}.category-strength{display:grid;gap:14px}.category-item{display:grid;gap:10px}.category-item-header{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:10px}.category-bar{display:flex;overflow:hidden;border-radius:999px;border:1px solid rgba(148,163,184,.25);background:#0f172a8c;min-height:12px}.category-bar-segment{height:100%}.category-bar-segment.correct{background:#34d39973}.category-bar-segment.incorrect{background:#f8717173}.category-bar-segment.unanswered{background:#94a3b84d}.category-legend{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--text-muted)}.legend.correct{color:var(--success)}.legend.incorrect{color:var(--danger)}.legend.unanswered{color:var(--text-muted)}.recent-sessions-card{display:grid;gap:16px;grid-template-rows:auto auto;align-content:start}.recent-sessions{display:grid;gap:12px;max-height:260px;overflow-y:auto;padding-right:4px}.recent-session-row{border:1px solid var(--list-card-border);background:#0f172a8c;border-radius:14px;padding:12px 16px;display:grid;gap:8px}.recent-session-primary{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}.recent-session-date{font-weight:600}.recent-session-metrics{display:flex;flex-wrap:wrap;gap:14px;font-size:13px}.recent-session-actions{display:flex;gap:10px;flex-wrap:wrap}.metric.correct{color:var(--success)}.metric.incorrect{color:var(--danger)}.metric.neutral{color:var(--text-muted)}.form-row{display:flex;gap:18px;flex-wrap:wrap}.form-row label{display:flex;flex-direction:column;gap:6px;font-size:14px;flex:1 1 200px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#070c18a6;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.modal{width:min(720px,100%);background:var(--modal-bg);border:1px solid var(--modal-border);border-radius:20px;box-shadow:var(--modal-shadow);padding:32px;display:grid;gap:16px}.multi-select-toggle{width:100%;display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-radius:12px;border:1px solid var(--border);background:#0f172a80;cursor:pointer;font-size:14px;color:var(--text)}.multi-select-toggle.open{border-color:#38bdf859;background:#38bdf81a}.multi-select-menu{margin-top:8px;border-radius:12px;border:1px solid rgba(56,189,248,.2);background:#0f172abf;max-height:320px;overflow-y:auto;box-shadow:0 16px 38px #060c1866}.multi-select-option{display:flex;align-items:center;gap:12px;padding:10px 14px;font-size:14px}.multi-select-option:hover{background:#38bdf81f}.multi-select-divider{height:1px;background:#94a3b82e;margin:4px 0}.history-table tbody tr:hover,.history-table tbody tr:focus{background:#38bdf81f}.history-table tbody tr:focus{outline:2px solid rgba(56,189,248,.45);outline-offset:-2px}.answer-option.review{cursor:default}.answer-option.review:hover{transform:none}.history-modal{width:min(960px,100%);max-height:90vh;overflow-y:auto;gap:20px}.history-review{display:grid;gap:16px}@media (max-width: 980px){.session-layout{grid-template-columns:1fr}.app-header{flex-direction:column;align-items:flex-start;gap:16px}.main{padding:20px}.landing-footer{flex-direction:column;align-items:flex-start;gap:12px}.landing-footer-links{gap:12px}.legal-card{padding:28px 24px}}@media (max-width: 640px){.session-controls{width:calc(100% - 32px);bottom:16px;padding:12px 16px}.session-view{padding-bottom:140px}.landing-hero{padding:48px 24px 72px}.landing-columns{padding:0 24px 56px}.landing-footer{padding:28px 24px 40px}.legal-layout{padding:48px 12px}}
