@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;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.47"}.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>.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 .smash{display:inline;line-height:0}.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;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 .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{--canvas: #f7f6f3;--bg: #fffcf7;--bg-alt: #f3f0ea;--bg-zebra: #ece8df;--sidebar-bg: #161412;--sidebar-active: #2b2722;--border: #e2ddd3;--text: #1a1916;--muted: #6b6560;--accent: #1a1916;--teal: #b4532a;--teal-dark: #8c3f20;--teal-soft: #f2e7dc;--easy: #2f6b4f;--medium: #8a5a1f;--hard: #9b3a3a;--fav: #9b3a3a;--radius: 2px;--shadow: none;--font-sans: Inter, "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{font-family:var(--font-sans);color:var(--text);background:var(--canvas);font-feature-settings:"kern" 1,"tnum" 1;-webkit-font-smoothing:antialiased}.app{min-height:100%}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:20;min-height:72px;background:var(--sidebar-bg);color:#f4efe6}.topbar-inner{width:100%;min-height:72px;display:grid;grid-template-columns:minmax(230px,1fr) auto minmax(150px,1fr);align-items:center;gap:1.5rem;padding:.7rem 2rem}.topbar-brand{min-width:0}.topbar-tagline{margin:.18rem 0 0;overflow:hidden;color:#9c9184;font-size:.65rem;letter-spacing:.055em;text-overflow:ellipsis;text-transform:uppercase;white-space:nowrap}.topbar-nav{display:flex;align-self:stretch;align-items:stretch;gap:.1rem}.topbar-nav .nav-link{position:relative;align-items:center;padding:0 .8rem;border-radius:0;color:#c4b9ac;font-size:.7rem;font-weight:600;letter-spacing:.085em;text-transform:uppercase}.topbar-nav .nav-link svg{display:none}.topbar-nav .nav-link:hover,.topbar-nav .support-link:hover,.topbar-nav .nav-link.active{background:transparent;color:#f4efe6}.topbar-nav .nav-link.active:after{position:absolute;right:.7rem;bottom:0;left:.7rem;height:2px;background:var(--teal);content:""}.topbar-account{display:flex;justify-content:flex-end;min-width:0}.account-menu{display:flex;align-items:center;justify-content:flex-end;gap:.75rem;min-width:0}.account-email{display:inline-flex;align-items:center;gap:.35rem;min-width:0;max-width:190px;overflow:hidden;color:#b9aea2;font-size:.75rem;text-overflow:ellipsis;white-space:nowrap}.account-action{display:inline-flex;align-items:center;gap:.4rem;border:0;background:transparent;color:#b9aea2;cursor:pointer;font:inherit;font-size:.75rem;text-decoration:none;white-space:nowrap}.account-action:hover{color:#f4efe6}.account-login{margin:0;padding:.4rem .55rem;border:1px solid #4a433c}.main-column{display:flex;flex-direction:column;min-width:0;min-height:100vh;background:var(--canvas)}.bottom-nav{display:none}.site-foot{margin-top:auto;padding:2.4rem 2rem 1.2rem;background:var(--sidebar-bg);color:#c4b9ac}.site-foot-grid{display:grid;grid-template-columns:minmax(260px,1.6fr) minmax(150px,.7fr) minmax(170px,.7fr);gap:3rem;width:100%;max-width:1180px;margin:0 auto}.site-foot-summary{max-width:430px}.site-foot-brand{display:inline-block;color:#f4efe6;font-size:1rem;font-weight:800;letter-spacing:.08em;text-decoration:none;text-transform:uppercase}.site-foot-brand span{color:#d7b089}.site-foot-summary p{margin:.75rem 0;color:#9c9184;font-size:.82rem;line-height:1.6}.site-foot-summary>a,.site-foot-group a{color:#c4b9ac;font-size:.8rem;text-decoration:none}.site-foot-summary>a:hover,.site-foot-group a:hover{color:#f4efe6;text-decoration:underline;text-underline-offset:.2em}.site-foot-group{display:grid;align-content:start;justify-items:start;gap:.55rem}.site-foot-group strong{margin-bottom:.2rem;color:#f4efe6;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase}.site-foot-meta{display:flex;justify-content:space-between;gap:1rem;width:100%;max-width:1180px;margin:2rem auto 0;padding-top:1rem;border-top:1px solid #39332d;color:#81776d;font-family:var(--font-mono);font-size:.68rem}.brand{display:inline-block;color:#f4efe6;font-size:1.05rem;font-weight:700;letter-spacing:.08em;text-decoration:none;text-transform:uppercase}.brand-accent{color:#d7b089}.nav-link{display:inline-flex;align-items:center;gap:.55rem;padding:.55rem .75rem;border-radius:5px;color:var(--muted);text-decoration:none;font-weight:600;font-size:.9rem}.nav-link:hover{background:var(--bg-alt);color:var(--text)}.nav-link.active{background:var(--accent);color:#fff}.support-link{color:var(--teal-dark)}.support-link:hover{background:#14b8a61a;color:var(--teal-dark)}.content{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:2.1rem 2rem 2.75rem}.auth-page{min-height:calc(100vh - 9rem);display:grid;place-items:center}.auth-card{width:min(100%,420px);padding:1.5rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);box-shadow:var(--shadow)}.auth-heading{display:flex;align-items:flex-start;gap:.75rem;margin-bottom:1.25rem}.auth-heading>svg{flex:0 0 auto;margin-top:.15rem;color:var(--teal-dark)}.auth-heading h1,.auth-callback h1{margin:0;font-size:1.35rem}.auth-heading p{margin:.35rem 0 0}.auth-google{width:100%;display:flex;align-items:center;justify-content:center;gap:.65rem;min-height:2.65rem;border:1px solid var(--border);border-radius:5px;background:var(--bg);color:var(--text);cursor:pointer;font:inherit;font-size:.88rem;font-weight:600}.auth-google:hover:not(:disabled){border-color:var(--teal);background:var(--bg-alt)}.auth-google:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.auth-google:disabled{cursor:not-allowed;opacity:.5}.auth-google-mark{display:grid;width:1.25rem;height:1.25rem;place-items:center;border-radius:50%;color:#4285f4;font-family:Arial,sans-serif;font-size:1rem;font-weight:700}.auth-divider{display:flex;align-items:center;gap:.75rem;margin:1rem 0;color:var(--muted);font-size:.75rem}.auth-divider:before,.auth-divider:after{height:1px;flex:1;background:var(--border);content:""}.auth-form{display:grid;gap:.9rem}.auth-form label{display:grid;gap:.35rem;color:var(--text);font-size:.84rem;font-weight:600}.auth-input{display:flex;align-items:center;gap:.5rem;padding:0 .7rem;border:1px solid var(--border);border-radius:5px;color:var(--muted)}.auth-input:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px #0891b21c}.auth-input input{width:100%;padding:.65rem 0;border:0;outline:0;background:transparent;font:inherit}.auth-submit{justify-content:center;margin-top:.2rem}.auth-submit:disabled{cursor:not-allowed;opacity:.5}.auth-message{margin:0;padding:.65rem .75rem;border-radius:8px;font-size:.82rem}.auth-message.error{background:#fef2f2}.auth-message.success{color:var(--easy);background:#f0fdf4}.auth-switch{width:100%;margin-top:1rem;border:0;background:none;color:var(--teal-dark);cursor:pointer;font:inherit;font-size:.84rem}.auth-back{display:flex;justify-content:center;margin:1rem 0 0}.auth-callback{text-align:center}.questions-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem}.page-kicker{display:block;margin-bottom:.35rem;color:var(--teal-dark);font-family:var(--font-mono);font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.question-count{margin:0 0 .2rem;color:var(--muted);font-family:var(--font-mono);font-size:.75rem}.question-count strong{color:var(--text);font-size:.9rem}.page-head h1{margin:0 0 .25rem;font-size:1.75rem;letter-spacing:-.035em}.muted{color:var(--muted);font-size:.9rem}.error{color:var(--hard)}.section-title{margin-top:2rem;font-size:1.15rem;letter-spacing:-.02em}.filters{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin:1.25rem 0 1rem}.search{display:inline-flex;align-items:center;gap:.5rem;padding:0 .75rem;border:1px solid var(--border);flex:1 1 240px;color:var(--muted);background:var(--bg)}.search input{border:none;outline:none;padding:.55rem 0;width:100%;font-size:.9rem;background:transparent}.search:focus-within,.filters select:focus{border-color:var(--text);outline:none}.filters select{min-height:39px;padding:.55rem .75rem;border:1px solid var(--border);background:var(--bg);font-size:.9rem;color:var(--text)}.filters select:disabled{cursor:not-allowed;color:var(--muted);background:var(--bg-zebra)}.difficulty-filter{display:inline-flex;overflow:hidden;border:1px solid var(--border);background:var(--bg)}.difficulty-filter button{min-height:37px;padding:.5rem .7rem;border:0;background:transparent;color:var(--muted);cursor:pointer;font:inherit;font-size:.84rem}.difficulty-filter button+button{border-left:1px solid var(--border)}.difficulty-filter button:hover{color:var(--text)}.difficulty-filter button.active{background:var(--text);color:var(--canvas)}.toggle{display:inline-flex;align-items:center;gap:.4rem;min-height:39px;padding:.5rem .8rem;border:1px solid var(--border);background:var(--bg);cursor:pointer;font-size:.84rem;font-weight:500;color:var(--muted)}.toggle.active{color:var(--fav);border-color:var(--fav);background:#f7eaea}.table-wrap{border-top:1px solid var(--text)}.qtable{width:100%;border-collapse:collapse;font-size:.92rem}.qtable thead th{text-align:left;padding:.55rem .7rem;font-weight:600;color:var(--muted);border-bottom:1px solid var(--border);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase}.qtable tbody tr{border-bottom:1px solid var(--border)}.qtable tbody tr:nth-child(2n){background:var(--bg)}.qtable tbody tr:hover{background:#fffdf8}.qtable td{padding:.72rem .7rem;vertical-align:middle}.col-fav,.col-status{width:34px;text-align:center}.col-name{font-weight:600}.col-subtopic{color:var(--muted)}.q-subtopic-mobile{display:none}.qlink{color:var(--text);text-decoration:none;display:block}.qlink:hover{color:var(--teal-dark)}.lock-icon{color:var(--muted);margin-right:.4rem;vertical-align:-2px}.solved-icon{color:var(--easy)}.unseen-icon{color:#aaa39b}.icon-btn{background:none;border:none;cursor:pointer;color:var(--muted);padding:.2rem;display:inline-flex;border-radius:var(--radius)}.icon-btn:hover,.icon-btn.fav-on{color:var(--fav)}.icon-btn.big{padding:.4rem}.empty{padding:1.5rem;text-align:center}.badge{display:inline-block;padding:.16rem .48rem;border:1px solid transparent;border-radius:4px;font-family:var(--font-mono);font-size:.68rem;font-weight:600;letter-spacing:.015em;text-transform:capitalize}.diff-easy{color:var(--easy);border-color:#bfd4c8;background:#edf4f0}.diff-medium{color:var(--medium);border-color:#ddc9a8;background:#f6efe3}.diff-hard{color:var(--hard);border-color:#dfbec0;background:#f7eaea}.badge[class*=topic-]{color:#5d5147;border-color:#ddd5ca;background:#f0ece5}.back-link{display:inline-flex;align-items:center;gap:.35rem;color:var(--muted);text-decoration:none;font-size:.88rem;margin-bottom:1rem}.back-link:hover{color:var(--text)}.q-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.q-actions{display:flex;gap:.25rem}.q-actions .icon-btn.solved-on,.q-actions .icon-btn:first-child:hover{color:var(--easy)}.q-actions .icon-btn:disabled{cursor:default}.q-header h1{margin:0 0 .5rem;font-size:1.5rem}.q-meta{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.subtopic{color:var(--muted);font-size:.85rem}.q-prompt{margin:1.25rem 0;font-size:1.02rem}.tag-row{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:1.5rem}.tag{font-size:.78rem;color:var(--muted);background:var(--bg-alt);padding:.15rem .5rem;border-radius:6px}.hints h2,.solution h2{font-size:1.05rem;display:flex;align-items:center;gap:.4rem}.hint-card{border-left:3px solid var(--teal);background:var(--bg-alt);padding:.25rem .9rem;border-radius:0 8px 8px 0;margin-bottom:.6rem}.btn{border:none;border-radius:5px;padding:.55rem 1rem;font-size:.9rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem}.btn.primary{background:var(--accent);color:#fff}.btn.primary:hover{background:#1c344d}.btn.subtle{background:var(--bg-alt);color:var(--text);border:1px solid var(--border)}.btn.subtle:hover{border-color:#b9c7d3;background:var(--bg-zebra)}.solution{margin:1.5rem 0;border-top:1px solid var(--border);padding-top:1.25rem}.answer-line{display:flex;align-items:center;gap:.4rem;color:var(--teal-dark);background:var(--teal-soft);padding:.5rem .8rem;border-radius:8px}.source{margin-top:2rem;font-size:.82rem;color:var(--muted);display:flex;align-items:center;gap:.4rem}.source a{display:inline-flex;align-items:center;gap:.2rem;color:var(--teal-dark)}.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;margin-top:1.25rem}.topic-card{border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;text-decoration:none;color:inherit;background:var(--bg);transition:border-color .12s ease,background .12s ease}.topic-card:hover{border-color:var(--teal);background:var(--teal-soft)}.topic-card-head{display:flex;align-items:center;gap:.5rem;color:var(--teal-dark)}.topic-card-head h2{font-size:1.1rem;margin:0;color:var(--text)}.topic-card-foot{display:flex;gap:.9rem;margin-top:.9rem;font-size:.8rem;color:var(--muted)}.topic-layout{display:grid;grid-template-columns:220px 1fr;gap:1.5rem;margin-top:1.25rem}.lesson-list h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin:1rem 0 .5rem}.lesson-link{display:block;width:100%;text-align:left;background:none;border:none;padding:.5rem .6rem;border-radius:5px;cursor:pointer;color:var(--text);font-size:.9rem}.lesson-link:hover{background:var(--bg-alt)}.lesson-link.active{background:var(--sidebar-active);color:#fff}.resource-list{list-style:none;padding:0;margin:0}.resource-list li{margin-bottom:.4rem;font-size:.85rem}.resource-list a{color:var(--teal-dark);text-decoration:none}.home{display:grid;gap:2.75rem}.home-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(240px,.7fr);gap:2.5rem;align-items:center;padding:2.25rem 0 .5rem}.home-eyebrow{color:var(--teal-dark);font-family:var(--font-mono);font-size:.76rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.home-hero h1{max-width:720px;margin:.65rem 0 1rem;font-size:clamp(2.15rem,5vw,3rem);line-height:1.12;letter-spacing:-.045em;color:var(--text)}.home-hero-copy>p{max-width:680px;margin:0;color:var(--muted);font-size:1.05rem;line-height:1.7}.home-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.5rem}.home-cta{justify-content:center;text-decoration:none}.home-hero .btn.primary{background:var(--text);color:var(--canvas)}.home-hero .btn.primary:hover{background:#332f2a}.home-hero .btn.subtle{border-color:var(--text);background:transparent;color:var(--text)}.home-hero .btn.subtle:hover{border-color:var(--text);background:var(--bg-zebra)}.home-hero-mark{display:grid;place-items:center;gap:1rem;min-height:190px;padding:1.5rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--teal-dark);text-align:center}.home-hero-mark span{max-width:210px;color:var(--text);font-size:.9rem;font-weight:700;line-height:1.5}.home-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--text)}.home-stat{display:grid;gap:.3rem;padding:1.25rem;border-bottom:1px solid var(--border);background:transparent}.home-stat strong{font-family:var(--font-mono);font-size:1.65rem}.home-stat span{color:var(--muted);font-size:.82rem}.home-section{display:grid;gap:1.35rem}.home-section-head h2,.home-support h2{margin:.45rem 0 0;font-size:1.55rem;letter-spacing:-.025em}.home-section-head-row{display:flex;align-items:end;justify-content:space-between;gap:1rem}.home-text-link{display:inline-flex;align-items:center;gap:.3rem;flex-shrink:0;color:var(--teal-dark);font-size:.86rem;font-weight:700;text-decoration:none}.home-feature-grid,.home-topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.home-feature,.home-topic-card{padding:1.25rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);box-shadow:var(--shadow)}.home-feature-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:5px;background:var(--teal-soft);color:var(--teal-dark)}.home-feature h3,.home-topic-card h3{margin:.9rem 0 .45rem;font-size:1rem}.home-feature p,.home-topic-card p,.home-support p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.6}.home-topic-card{color:var(--text);text-decoration:none;transition:border-color .12s ease,background .12s ease}.home-topic-card:hover{border-color:var(--teal);background:var(--teal-soft)}.home-topic-card span{display:block;margin-top:.9rem;color:var(--teal-dark);font-size:.78rem;font-weight:700}.home-support{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:1.75rem;border:1px solid #d9c5af;border-radius:var(--radius);background:var(--teal-soft);color:var(--text)}.home-support>div{max-width:700px}.home-support p{margin-top:.65rem;color:var(--muted)}.home-support .home-eyebrow{color:var(--teal-dark)}.home-support .btn{flex-shrink:0;background:var(--accent);color:#fff}.info-page{width:min(100%,760px);margin:0 auto;padding:1.35rem 0 2rem;line-height:1.7}.info-page-head{padding-bottom:1.5rem;border-bottom:1px solid var(--text)}.info-page-head h1{margin:.45rem 0 .65rem;font-size:clamp(2rem,5vw,2.65rem);line-height:1.15;letter-spacing:-.04em}.info-page-head p{max-width:680px;margin:0;color:var(--muted);font-size:1rem}.info-updated{display:block;margin-top:.85rem;color:var(--muted);font-family:var(--font-mono);font-size:.7rem;text-transform:uppercase}.info-page section:not(.contact-options){padding:1.45rem 0;border-bottom:1px solid var(--border)}.info-page h2{margin:0 0 .55rem;font-size:1.15rem;letter-spacing:-.02em}.info-page h3{margin:1.2rem 0 .35rem;font-size:.95rem}.info-page p{margin:0;color:#48433e}.info-page p+p{margin-top:.8rem}.info-page a{color:var(--teal-dark)}.info-link{display:inline-flex;align-items:center;gap:.3rem;margin-top:.75rem;font-size:.88rem;font-weight:700;text-decoration:none}.info-link:hover{text-decoration:underline;text-underline-offset:.2em}.contact-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;padding:1.5rem 0 .25rem}.contact-option{display:flex;align-items:center;gap:.8rem;min-width:0;padding:1rem;border:1px solid var(--border);background:var(--bg);color:var(--text);text-decoration:none}.contact-option:hover{border-color:var(--teal);background:var(--teal-soft)}.contact-option>svg{flex:0 0 auto;color:var(--teal-dark)}.contact-option span{display:grid;min-width:0}.contact-option small{color:var(--muted);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase}.contact-option strong{overflow-wrap:anywhere;color:var(--text);font-size:.88rem}.info-page .info-note{margin-top:1.25rem;padding:.8rem 1rem;border-left:3px solid var(--teal);background:var(--teal-soft);color:var(--muted);font-size:.85rem}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-top:1.25rem}.stat-card{border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;display:flex;flex-direction:column;gap:.3rem;background:var(--bg)}.stat-card.highlight{border-color:#d9c5af;background:var(--teal-soft)}.stat-num{font-family:var(--font-mono);font-size:1.7rem;font-weight:800;letter-spacing:-.02em}.stat-label{color:var(--muted);font-size:.85rem}.topic-progress{margin-top:1rem;display:flex;flex-direction:column;gap:.6rem}.topic-progress-row{display:grid;grid-template-columns:200px 1fr 48px;align-items:center;gap:.9rem;text-decoration:none;color:inherit}.topic-progress-group{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg)}.topic-progress-group>summary{grid-template-columns:16px 184px 1fr 48px;padding:.8rem 1rem;cursor:pointer;list-style:none}.topic-progress-group>summary::-webkit-details-marker{display:none}.topic-progress-group>summary:hover,.topic-progress-group[open]>summary{background:var(--bg-alt)}.tp-chevron{color:var(--muted);transition:transform .15s ease}.topic-progress-group[open] .tp-chevron{transform:rotate(90deg)}.subtopic-progress{display:flex;flex-direction:column;gap:.15rem;padding:.4rem 1rem .65rem 2rem;border-top:1px solid var(--border)}.subtopic-progress-row{grid-template-columns:200px 1fr 48px;padding:.45rem 0}.subtopic-progress-row:hover .tp-name{color:var(--teal-dark)}.tp-name{font-weight:600;font-size:.9rem}.tp-bar{height:6px;background:var(--bg-zebra);border-radius:999px;overflow:hidden}.tp-fill{height:100%;background:var(--teal)}.tp-count{text-align:right;font-family:var(--font-mono);font-size:.82rem;color:var(--muted)}.markdown{line-height:1.65}.markdown h1{font-size:1.5rem}.markdown h2{font-size:1.2rem;margin-top:1.5rem}.markdown h3{font-size:1.05rem}.markdown pre{background:var(--sidebar-bg);color:#e2e8f0;padding:.9rem 1rem;border-radius:8px;overflow-x:auto;font-size:.85rem}.markdown code{font-family:ui-monospace,SF Mono,Menlo,monospace}.markdown :not(pre)>code{background:var(--bg-zebra);padding:.1rem .35rem;border-radius:4px;font-size:.85em}.markdown table{border-collapse:collapse;width:100%;margin:1rem 0}.markdown th,.markdown td{border:1px solid var(--border);padding:.4rem .7rem;text-align:left}.markdown blockquote{border-left:3px solid var(--teal);margin:1rem 0;padding:.2rem 1rem;color:var(--muted);background:var(--bg-alt)}@media(max-width:980px){.topbar-inner{grid-template-columns:minmax(150px,1fr) auto auto;gap:.75rem;padding-inline:1rem}.topbar-tagline{display:none}.topbar-nav .nav-link{padding-inline:.55rem;font-size:.66rem}.account-email{display:none}}@media(max-width:768px){.app-shell{padding-bottom:calc(4.25rem + env(safe-area-inset-bottom))}.topbar{min-height:56px}.topbar-inner{min-height:56px;grid-template-columns:1fr auto}.topbar-nav{display:none}.brand{font-size:.92rem}.topbar-account .account-action svg{display:none}.account-login{border:0;padding:0}.bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:20;justify-content:space-around;gap:.25rem;padding:.45rem .5rem calc(.45rem + env(safe-area-inset-bottom));border-top:1px solid #39332d;background:var(--sidebar-bg);box-shadow:0 -2px 12px #1e181324}.bottom-nav .nav-link{flex:1;flex-direction:column;justify-content:center;gap:.2rem;padding:.4rem .25rem;color:#a99e92;font-size:.72rem;text-align:center}.bottom-nav .nav-link:hover{background:#ffffff0e;color:#f4efe6}.bottom-nav .nav-link.active{background:var(--sidebar-active);color:#f4efe6}.bottom-nav .support-link{color:#d7b089}.bottom-nav .nav-link svg{width:20px;height:20px}.site-foot{padding:2rem 1rem 1rem}.site-foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem 1.5rem}.site-foot-summary{grid-column:1 / -1}.site-foot-meta{margin-top:1.5rem}.content{padding:1.25rem 1rem 1.75rem}.home{gap:2.25rem}.home-hero{grid-template-columns:1fr;gap:1.5rem;padding:1.5rem}.home-hero h1{font-size:2.25rem}.home-hero-mark{min-height:140px}.home-stats{grid-template-columns:repeat(2,1fr)}.home-feature-grid,.home-topic-grid{grid-template-columns:1fr}.home-section-head-row,.home-support{align-items:flex-start;flex-direction:column}.home-support .btn{width:100%}.info-page{padding-top:.6rem}.contact-options,.topic-layout{grid-template-columns:1fr}.topic-progress-row{grid-template-columns:120px 1fr 40px}.topic-progress-group>summary{grid-template-columns:16px 104px 1fr 40px}.subtopic-progress-row{grid-template-columns:120px 1fr 40px}.subtopic-progress{padding-left:1.25rem}.qtable td,.qtable th{padding:.6rem .5rem}.qtable .col-topic,.qtable .col-subtopic{display:none}.q-subtopic-mobile{display:block;margin-top:.2rem;color:var(--muted);font-size:.78rem;font-weight:400}}
