@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{--radius: 20px}:root,[data-theme=purple]{--bg: #0b1020;--bg2: #0e1530;--surface: #141c3a;--surface2: #1b2548;--line: #cfd8ff;--text: #e8ecff;--muted: #9aa6d6;--accent: #6d8bff;--accent2: #9b5cff;--good: #34d399;--good-dim: #0f3d31;--bad: #fb7185;--bad-dim: #45131f;--gold: #ffd166;--rule: rgba(207, 216, 255, .55);--hud-bg: rgba(11, 16, 32, .78);--page-bg: radial-gradient(1200px 600px at 20% -10%, #1a2350 0%, transparent 60%), radial-gradient(900px 500px at 100% 0%, #2a1a4d 0%, transparent 55%), #0b1020}[data-theme=dark]{--bg: #07090d;--bg2: #0c0f16;--surface: #11151d;--surface2: #181d28;--line: #c8d2e0;--text: #e7ecf3;--muted: #8a93a3;--accent: #4f9eff;--accent2: #22c1c3;--good: #34d399;--good-dim: #0d3329;--bad: #f87171;--bad-dim: #3a1414;--gold: #fbbf24;--rule: rgba(200, 210, 224, .5);--hud-bg: rgba(7, 9, 13, .82);--page-bg: radial-gradient(1000px 600px at 50% -20%, #10151f 0%, transparent 60%), #07090d}[data-theme=light]{--bg: #f4f6fc;--bg2: #eef1fa;--surface: #ffffff;--surface2: #f1f3fb;--line: #3a4a78;--text: #16203a;--muted: #5b678a;--accent: #5b6cff;--accent2: #8b46ff;--good: #0f9d6b;--good-dim: #d7f5e9;--bad: #e23d5a;--bad-dim: #fce0e5;--gold: #c2890a;--rule: rgba(40, 56, 110, .6);--hud-bg: rgba(255, 255, 255, .82);--page-bg: radial-gradient(1100px 600px at 15% -10%, #e7ebff 0%, transparent 60%), radial-gradient(900px 500px at 100% 0%, #f0e7ff 0%, transparent 55%), #f4f6fc}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--page-bg);background-attachment:fixed;transition:background .3s ease,color .3s ease;-webkit-font-smoothing:antialiased}.app{height:100%;display:flex;flex-direction:column;max-width:620px;margin:0 auto}.main{flex:1;overflow-y:auto;scroll-snap-type:y proximity;padding:14px 14px 40vh;-webkit-overflow-scrolling:touch}.feed-slot{scroll-snap-align:start;scroll-margin-top:12px;padding:10px 0}.hud{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:calc(12px + env(safe-area-inset-top,0px)) calc(16px + env(safe-area-inset-right,0px)) 12px calc(16px + env(safe-area-inset-left,0px));background:var(--hud-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid color-mix(in srgb,var(--text) 10%,transparent)}.hud-left{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.hud-right{display:flex;align-items:center;gap:10px}.lvl{font-weight:800;font-size:.85rem;padding:3px 9px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;white-space:nowrap}.xpbar{flex:1;height:9px;border-radius:999px;background:color-mix(in srgb,var(--text) 14%,transparent);overflow:hidden;min-width:60px}.xpbar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:999px;transition:width .4s ease}.xp-num{font-size:.78rem;color:var(--muted);white-space:nowrap}.streak{font-weight:700;font-size:.9rem;color:var(--muted)}.streak--on{color:var(--gold)}.combo{font-weight:800;font-size:.9rem;color:var(--gold);white-space:nowrap;animation:pop .25s ease}.combo--hot{animation:comboPulse .6s ease infinite alternate}@keyframes comboPulse{0%{transform:scale(1)}to{transform:scale(1.18);filter:drop-shadow(0 0 5px var(--gold))}}.daily{display:flex;align-items:center;gap:4px}.ring-bg{fill:none;stroke:color-mix(in srgb,var(--text) 16%,transparent);stroke-width:3}.ring-fg{fill:none;stroke:var(--accent2);stroke-width:3;stroke-linecap:round;transition:stroke-dashoffset .4s ease}.daily-num{font-size:.72rem;font-weight:800;color:var(--muted)}.daily--done .ring-fg{stroke:var(--gold)}.daily--done .daily-num{color:var(--gold)}.celebrate{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;pointer-events:none;display:flex;align-items:center;justify-content:center;overflow:hidden}.celebrate-card{text-align:center;padding:22px 30px;border-radius:22px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 20px 60px #00000073;animation:popBig .4s cubic-bezier(.2,1.4,.4,1)}.celebrate-emoji{font-size:2.4rem}.celebrate-title{font-weight:900;letter-spacing:.14em;font-size:.85rem;opacity:.92}.celebrate-lvl{font-weight:900;font-size:1.7rem}@keyframes popBig{0%{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}.confetti{position:absolute;top:0;right:0;bottom:0;left:0}.confetti-bit{position:absolute;top:-14px;width:9px;height:14px;border-radius:2px;animation:fall 1.9s linear forwards}@keyframes fall{to{transform:translateY(110vh) rotate(560deg);opacity:.15}}.snd{background:transparent;border:none;font-size:1.1rem;cursor:pointer}.menu-btn{background:transparent;border:none;font-size:1.35rem;line-height:1;cursor:pointer;color:var(--text);padding:2px 4px}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#00000080;display:flex;justify-content:flex-end;animation:fadeIn .2s ease}.drawer{width:min(88%,360px);height:100%;overflow-y:auto;background:var(--bg2);border-left:1px solid color-mix(in srgb,var(--text) 12%,transparent);box-shadow:-16px 0 50px #0006;padding:calc(16px + env(safe-area-inset-top,0px)) calc(16px + env(safe-area-inset-right,0px)) calc(40px + env(safe-area-inset-bottom,0px)) 16px;animation:slideInRight .25s ease}.drawer-head{display:flex;align-items:center;justify-content:space-between;font-size:1.1rem;font-weight:800;margin-bottom:16px}.drawer-close{background:transparent;border:none;font-size:1.1rem;color:var(--muted);cursor:pointer}.drawer-row{margin-bottom:18px}.drawer-label{font-size:.9rem;font-weight:800;color:var(--text);margin-bottom:8px}.drawer-hint{font-size:.76rem;color:var(--muted);margin-top:6px}.seg{display:flex;gap:6px}.seg-btn{flex:1;padding:9px 8px;border-radius:11px;border:1px solid color-mix(in srgb,var(--text) 16%,transparent);background:var(--surface2);color:var(--muted);font-size:.85rem;font-weight:700;cursor:pointer;white-space:nowrap}.seg-btn--on{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.section-bar{position:sticky;top:0;z-index:15;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;background:var(--hud-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid color-mix(in srgb,var(--text) 8%,transparent)}.section-chips{display:flex;gap:7px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}.section-chips::-webkit-scrollbar{display:none}.chip{display:flex;flex-direction:column;gap:4px;white-space:nowrap;padding:6px 12px 5px;border-radius:12px;border:1px solid color-mix(in srgb,var(--text) 16%,transparent);background:transparent;color:var(--muted);font-size:.82rem;font-weight:700;cursor:pointer}.chip--on{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent}.chip-bar{height:3px;border-radius:999px;background:color-mix(in srgb,var(--text) 18%,transparent);overflow:hidden}.chip--on .chip-bar{background:#ffffff4d}.chip-bar-fill{display:block;height:100%;border-radius:999px;background:var(--good);transition:width .4s ease}.chip--on .chip-bar-fill{background:#fff}.pill--graph{color:var(--accent);border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,transparent)}.pill--scroll{color:var(--accent2);border-color:var(--accent2);background:color-mix(in srgb,var(--accent2) 16%,transparent)}.pill--type{color:var(--gold);border-color:var(--gold);background:color-mix(in srgb,var(--gold) 16%,transparent)}.feed-end{text-align:center;color:var(--muted);font-size:.9rem;font-weight:700;padding:24px 16px 40vh}.mastery{padding:8px 14px;background:var(--hud-bg);border-bottom:1px solid color-mix(in srgb,var(--text) 6%,transparent)}.mastery-top{display:flex;justify-content:space-between;font-size:.78rem;font-weight:700;margin-bottom:5px}.mastery-label{color:var(--muted)}.mastery-pct{color:var(--good)}.mastery-bar{height:7px;border-radius:999px;background:color-mix(in srgb,var(--text) 14%,transparent);overflow:hidden}.mastery-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--good),var(--accent2));transition:width .4s ease}.section-toggles{display:flex;gap:7px;flex-shrink:0}.pill{white-space:nowrap;padding:6px 11px;border-radius:999px;border:1px solid color-mix(in srgb,var(--text) 18%,transparent);background:transparent;color:var(--muted);font-size:.78rem;font-weight:800;cursor:pointer}.pill--assist,.pill--diff-easy{color:var(--good);border-color:var(--good);background:var(--good-dim)}.pill--diff-medium{color:var(--gold);border-color:var(--gold);background:color-mix(in srgb,var(--gold) 14%,transparent)}.pill--diff-hard{color:var(--bad);border-color:var(--bad);background:color-mix(in srgb,var(--bad) 16%,transparent)}.walkthrough{border:1px dashed color-mix(in srgb,var(--accent2) 45%,transparent);border-radius:16px;padding:12px 14px;background:color-mix(in srgb,var(--accent2) 8%,transparent)}.wt-head{font-size:.8rem;font-weight:900;letter-spacing:.04em;color:var(--accent2);margin-bottom:6px}.wt-tip{margin:0 0 8px;font-size:.9rem;color:var(--muted);line-height:1.4}.assist-box{margin-bottom:14px;padding:12px 14px;border-radius:14px;background:color-mix(in srgb,var(--good) 12%,transparent);border:1px solid color-mix(in srgb,var(--good) 30%,transparent)}.assist-tag{display:inline-block;font-size:.72rem;font-weight:900;letter-spacing:.06em;color:var(--good);margin-bottom:6px}.assist-tip{margin:0 0 8px;font-size:.92rem;line-height:1.4;color:var(--text)}.assist-why{margin:0;font-size:.9rem;line-height:1.4;color:var(--muted)}.lesson-card{border-color:color-mix(in srgb,var(--accent2) 40%,transparent)}.lesson-tag{font-size:.74rem;font-weight:900;letter-spacing:.05em;color:var(--accent2)}.lesson-title{font-size:1.15rem;margin:6px 0 12px;color:var(--text)}.lesson-formula{margin:4px 0 14px;font-size:1.05rem;padding:10px;border-radius:12px;background:color-mix(in srgb,var(--accent2) 10%,transparent)}.lesson-points{margin:0 0 16px;padding-left:1.1rem;display:flex;flex-direction:column;gap:8px}.lesson-points li{font-size:.95rem;line-height:1.45;color:var(--text)}.trig-ref{margin:4px 0 16px;padding:12px 14px;border-radius:14px;background:color-mix(in srgb,var(--accent2) 9%,transparent);border:1px solid color-mix(in srgb,var(--accent2) 26%,transparent)}.tr-head{font-size:.86rem;font-weight:800;color:var(--accent2);margin-bottom:10px}.tr-triangles{width:100%;max-width:320px;display:block;margin:0 auto 12px}.tr-triangles .tr-tri{fill:color-mix(in srgb,var(--accent) 12%,transparent);stroke:var(--accent);stroke-width:2;stroke-linejoin:round}.tr-triangles .tr-right{fill:none;stroke:color-mix(in srgb,var(--text) 45%,transparent);stroke-width:1.2}.tr-triangles .tr-side{fill:var(--text);font-size:13px;font-weight:800}.tr-triangles .tr-ang{fill:var(--muted);font-size:11px;font-weight:700}.tr-table{width:100%;border-collapse:collapse;margin:4px 0 12px;font-size:.95rem}.tr-table th,.tr-table td{border:1px solid color-mix(in srgb,var(--text) 14%,transparent);padding:6px 8px;text-align:center}.tr-table th{color:var(--muted);font-size:.8rem}.tr-note{margin:8px 0 0;font-size:.86rem;line-height:1.45;color:var(--text)}.tr-note b{color:var(--accent2)}.tr-method{margin-top:10px;padding:10px 12px;border-radius:12px;background:color-mix(in srgb,var(--gold) 12%,transparent);border:1px solid color-mix(in srgb,var(--gold) 30%,transparent);font-size:.88rem}.tr-method>b{color:var(--gold)}.tr-method ol{margin:8px 0 6px;padding-left:1.2rem;display:flex;flex-direction:column;gap:4px}.tr-method li{line-height:1.4}.tr-sub{display:block;margin-top:6px;font-size:.8rem;color:var(--muted);line-height:1.4}.card{background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid color-mix(in srgb,var(--text) 9%,transparent);border-radius:var(--radius);padding:18px 16px 16px;box-shadow:0 14px 40px #00000059}.card--solved{border-color:#34d39966}.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.card-skill{font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);font-weight:700}.uc-wrap{width:100%;display:flex;flex-direction:column;align-items:center}.unit-circle{width:100%;max-width:280px;aspect-ratio:1 / 1;overflow:visible}.unit-circle .uc-axis{stroke:color-mix(in srgb,var(--text) 32%,transparent);stroke-width:1.2}.unit-circle .uc-circle{fill:color-mix(in srgb,var(--accent) 7%,transparent);stroke:color-mix(in srgb,var(--text) 26%,transparent);stroke-width:1.5}.unit-circle .uc-cos{stroke:var(--gold);stroke-width:3.5}.unit-circle .uc-sin{stroke:var(--accent2);stroke-width:3.5}.unit-circle .uc-right{stroke:color-mix(in srgb,var(--text) 45%,transparent);stroke-width:1.2}.unit-circle .uc-arc{stroke:color-mix(in srgb,var(--text) 50%,transparent);stroke-width:2}.unit-circle .uc-ray{stroke:var(--accent);stroke-width:3;stroke-linecap:round}.unit-circle .uc-pt{fill:var(--text);stroke:var(--bg);stroke-width:1.5}.unit-circle .uc-angle{fill:var(--accent);font-size:13px;font-weight:800}.unit-circle .uc-leg{font-size:12px;font-weight:800}.uc-leg--cos{fill:var(--gold)}.uc-leg--sin{fill:var(--accent2)}.uc-leg--hyp{fill:var(--accent)}.uc-caption{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 14px;margin-top:8px;font-size:.85rem;font-weight:700}.uc-cap-cos{color:var(--gold)}.uc-cap-sin{color:var(--accent2)}.uc-cap-note,.uc-cap-dec{color:var(--muted);font-weight:600}.graph-wrap{display:flex;justify-content:center;margin:4px 0 10px}.graph{width:100%;max-width:340px;aspect-ratio:1 / 1;border-radius:14px;background:color-mix(in srgb,var(--text) 5%,transparent);border:1px solid color-mix(in srgb,var(--text) 12%,transparent)}.graph .grid{stroke:color-mix(in srgb,var(--text) 10%,transparent);stroke-width:1}.graph .axis{stroke:color-mix(in srgb,var(--text) 45%,transparent);stroke-width:1.5}.graph .tick{fill:var(--muted);font-size:9px}.graph .curve{stroke:var(--accent2);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.graph .curve--accent{stroke:var(--accent)}.graph .curve--dash{stroke-dasharray:5 5}.graph .pt{fill:var(--gold);stroke:var(--bg);stroke-width:1.5}.graph .pt--open{fill:var(--bg);stroke:var(--gold);stroke-width:2}.given{font-size:1.2rem;padding:12px 12px 16px;margin:4px 0 6px;border-radius:12px;background:color-mix(in srgb,var(--accent) 10%,transparent);border:1px solid color-mix(in srgb,var(--accent) 26%,transparent)}.fit{width:100%}.fit-inner{width:max-content;max-width:none;margin:0 auto;transform-origin:top center}.work{font-size:1.6rem;line-height:1.15;padding:8px 0 4px}.eq-line,.op-block{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;column-gap:.55rem;margin:.1rem 0}.cell-left{text-align:right}.cell-right{text-align:left}.cell-rel{text-align:center;color:var(--muted);padding:0 .15rem}.frac-line{margin:.25rem 0}.op-block{margin:.05rem 0 .1rem}.op-cell .math{color:var(--gold);font-size:.78em;font-weight:600}.op-rule{grid-column:1 / -1;border-top:2px solid var(--rule);margin-top:.18rem}.worked-step{margin-top:.2rem}.work--chain{padding-left:6px}.chain-line{display:flex;align-items:baseline;gap:.5rem;margin:.12rem 0}.chain-eq{min-width:1.1rem;text-align:right;color:var(--muted)}.chain-expr{text-align:left}.step-caption{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;font-size:.82rem;margin:10px 0 2px;padding-left:2px}.step-check{color:var(--good);font-weight:900}.step-action{color:var(--text);font-weight:700}.step-why{color:var(--muted)}.active{margin-top:16px}.prompt{font-size:.98rem;font-weight:700;margin-bottom:10px;color:var(--text)}.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}.choice{text-align:left;padding:13px 14px;border-radius:14px;border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);background:var(--surface2);color:var(--text);font-size:.92rem;font-weight:600;cursor:pointer;transition:transform .08s ease,border-color .15s ease,background .15s ease}.choice:active{transform:scale(.97)}.choice--right{border-color:var(--good);background:var(--good-dim)}.choice--wrong{border-color:var(--bad);background:var(--bad-dim);animation:shake .32s ease}.type-row{display:flex;align-items:center;gap:10px;background:var(--surface2);border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);border-radius:14px;padding:8px 10px 8px 14px}.type-row--wrong{border-color:var(--bad);animation:shake .32s ease}.type-row--right{border-color:var(--good);background:var(--good-dim)}.type-x{font-size:1.25rem;font-weight:700;color:var(--muted)}.type-input{flex:1;min-width:0;background:transparent;border:none;outline:none;color:var(--text);font-size:1.25rem;font-weight:700}.type-submit{border:none;border-radius:10px;padding:9px 16px;font-weight:800;font-size:.92rem;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));cursor:pointer}.type-submit:disabled{background:var(--good);cursor:default}.why-hint{margin-top:10px;font-size:.88rem;background:color-mix(in srgb,var(--accent2) 14%,transparent);border:1px solid color-mix(in srgb,var(--accent2) 34%,transparent);border-radius:12px;padding:10px 12px;color:var(--text);animation:dropIn .3s ease}.why-hint strong{color:var(--accent2)}.explain-box{margin-top:12px;padding:12px 14px;border-radius:14px;background:color-mix(in srgb,var(--accent) 12%,transparent);border:1px solid color-mix(in srgb,var(--accent) 32%,transparent);animation:dropIn .3s ease}.explain-head{font-size:.8rem;font-weight:900;letter-spacing:.03em;color:var(--accent);margin-bottom:8px}.explain-concept{margin:0 0 8px;font-size:.95rem;line-height:1.45;color:var(--text);font-weight:600}.explain-detail{margin:0;font-size:.92rem;line-height:1.5;color:var(--text);white-space:pre-line}.explain-foot{margin:10px 0 0;font-size:.85rem;color:var(--muted)}.stuck-btn{display:inline-block;margin-top:12px;padding:7px 12px;font-size:.84rem;font-weight:700;color:var(--muted);background:transparent;border:1px dashed color-mix(in srgb,var(--text) 24%,transparent);border-radius:999px;cursor:pointer;transition:color .15s ease,border-color .15s ease}.stuck-btn:hover{color:var(--text);border-color:color-mix(in srgb,var(--text) 45%,transparent)}.solved-bar{margin-top:16px;border-top:1px dashed color-mix(in srgb,var(--text) 18%,transparent);padding-top:14px}.solved-answer{font-size:1.4rem;font-weight:800;color:var(--good);margin-bottom:10px}.solved-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.solved-tag{font-size:.82rem;color:var(--gold);font-weight:700}.next-btn{border:none;border-radius:14px;padding:12px 18px;font-weight:800;font-size:.95rem;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));cursor:pointer;box-shadow:0 8px 22px #6d8bff59}.next-btn:active{transform:scale(.97)}.xp-float{font-weight:800;font-size:.95rem;color:var(--gold);animation:floatUp .9s ease forwards}@keyframes dropIn{0%{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:translateY(0)}}.eq-line--new{animation:dropIn .35s ease}@keyframes shake{10%,90%{transform:translate(-1px)}20%,80%{transform:translate(2px)}30%,50%,70%{transform:translate(-4px)}40%,60%{transform:translate(4px)}}@keyframes pop{0%{transform:scale(.6)}to{transform:scale(1)}}@keyframes floatUp{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-22px)}}@media (min-width: 640px){.work{font-size:2rem}}