@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{font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none;font-size:16px;--primary: #1d5fd0;--primary-hover: #174da8;--ink: #183153;--muted: #596b83;--line: #dce6f3;--bg: #f5f8ff;--accent-soft: #eaf2ff;--green: var(--accent-soft);--orange: #bd7a3a;--surface: #ffffff;--surface-hover: #f8fbff;--story-bg: #eaf3ff;--on-primary: #ffffff;--danger-bg: #fff1ed;--danger-fg: #a03f37;--danger-line: #f5d7cf;--warning-bg: #fcf4e7;--warning-fg: #76521f;--warning-line: #eee7d4;--purple-bg: #f1eef8;--purple-fg: #70578f;color-scheme:light}:root[data-theme=dark]{color-scheme:dark;--primary: #88b8ff;--primary-hover: #a6cbff;--ink: #e5edfa;--muted: #b3c1d6;--line: #36485f;--bg: #0f1724;--accent-soft: #233754;--surface: #172235;--surface-hover: #1e2d44;--story-bg: #152641;--on-primary: #10213a;--danger-bg: #3b242a;--danger-fg: #ffb0a6;--danger-line: #6d3d48;--warning-bg: #332c1d;--warning-fg: #f1ce85;--warning-line: #6b5832;--purple-bg: #312a45;--purple-fg: #d3bdf7}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}button,a,input,select,textarea{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary)}button{color:inherit}button svg{flex-shrink:0}a{color:var(--primary)}h1,h2,h3,p{margin-top:0}h1{font-size:30px;font-weight:650;letter-spacing:-.8px;line-height:1.4}h2{font-size:20px;font-weight:600}h3{font-size:17px;font-weight:600}p{line-height:1.7}small{font-size:13px}.muted{color:var(--muted)}.spread{display:flex;align-items:center;justify-content:space-between;gap:12px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.btn{border:1px solid transparent;border-radius:8px;padding:11px 17px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:550;background:var(--surface);white-space:nowrap}.btn.primary{background:var(--primary);color:var(--on-primary)}.btn.primary:hover{background:var(--primary-hover)}.btn.secondary{border-color:var(--line);background:var(--surface)}.btn.secondary:hover{background:var(--surface-hover)}.btn.danger{background:var(--danger-bg);color:var(--danger-fg);border-color:var(--danger-line)}.text-btn{border:0;background:none;padding:10px 0;color:var(--primary);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:14px}.icon-btn{border:0;background:transparent;display:inline-flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;border-radius:8px;color:var(--primary)}.icon-btn:hover{background:var(--accent-soft)}.full{width:100%}.badge{display:inline-flex;border-radius:5px;background:var(--accent-soft);color:var(--primary);font-size:12px;line-height:1.5;padding:4px 9px;white-space:nowrap}.green{background:var(--accent-soft);color:var(--ink)}.blue{background:var(--accent-soft);color:var(--primary)}.purple{background:var(--purple-bg);color:var(--purple-fg)}.amber{background:var(--warning-bg);color:var(--warning-fg)}.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}.field>span{font-size:14px;color:var(--ink)}.field input,.field select,.field textarea,input.control,select.compact,textarea.control{width:100%;border:1px solid var(--line);border-radius:7px;background:var(--surface);padding:12px;color:var(--ink);min-height:44px}input::placeholder,textarea::placeholder{color:var(--muted)}textarea{resize:vertical;min-height:96px}select.compact{width:auto;min-width:150px;font-size:14px}.brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:650;letter-spacing:1px;cursor:pointer}.brand-mark{display:flex;align-items:center;justify-content:center;width:43px;height:43px;background:var(--primary);color:var(--on-primary);border-radius:12px}.brand small{display:block;font-size:12px;color:var(--muted);letter-spacing:3px;font-weight:400;margin-top:1px}.eyebrow{color:var(--muted);font-size:12px;letter-spacing:2px;display:block;margin-bottom:12px}.app-shell{display:flex;min-height:100vh}.sidebar{width:226px;background:var(--surface);border-right:1px solid var(--line);position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;padding:30px 20px 20px;z-index:20}.sidebar .brand{margin:0 4px 37px}.workspace-tag{font-size:12px;color:var(--muted);padding:0 14px;margin-bottom:15px}.sidebar nav{display:grid;gap:9px}.sidebar nav button{border:0;background:transparent;display:flex;gap:13px;align-items:center;text-align:left;padding:14px 16px;border-radius:9px;color:var(--primary);font-size:15px}.sidebar nav button.active{background:var(--accent-soft);color:var(--primary);font-weight:650}.nav-count{margin-left:auto;background:var(--line);border-radius:4px;padding:1px 6px;font-size:12px}.sidebar-bottom{margin-top:auto}.quiet-card{background:var(--surface-hover);margin:30px 4px;padding:22px 15px;border-radius:10px;color:var(--muted)}.quiet-card p{margin:12px 0 2px;color:var(--primary);font-size:14px}.quiet-card small{font-size:12px}.user-block{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:20px}.avatar{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--accent-soft);color:var(--primary);font-size:14px;flex-shrink:0}.user-block strong{display:block;font-size:13px}.user-block small{display:block;font-size:12px;color:var(--muted);margin-top:4px}.user-block .icon-btn{margin-left:auto}.workspace{margin-left:226px;flex:1;min-width:0}.topbar{height:79px;border-bottom:1px solid var(--line);padding:0 42px;display:flex;align-items:center;justify-content:space-between;background:var(--surface)}.breadcrumb{display:flex;align-items:center;gap:13px;font-size:13px;color:var(--muted)}.breadcrumb span{color:var(--ink)}.top-actions{display:flex;gap:24px;align-items:center}.local-pill{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:12px}.local-pill i{width:6px;height:6px;background:#7aa8e8;border-radius:50%}.main{max-width:1330px;margin:auto;padding:37px 42px 50px;min-height:calc(100vh - 130px)}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:30px}.page-heading h1{margin-bottom:9px}.page-heading p{font-size:14px;color:var(--muted);margin:0}.date-label{font-size:13px;color:var(--muted);white-space:nowrap}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:24px}.stat-box{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:23px 25px}.stat-box>span{font-size:14px;color:var(--primary)}.stat-box strong{display:block;font-size:36px;font-weight:550;letter-spacing:-1px;margin:13px 0 8px}.stat-box strong small{font-size:13px;font-weight:400;margin-left:10px;letter-spacing:0;color:var(--muted)}.stat-box p{font-size:12px;margin:0;color:var(--muted)}.stat-box.highlight{background:var(--accent-soft);border-color:var(--line)}.action-strip{padding:17px 22px;background:var(--warning-bg);border:1px solid var(--warning-line);border-radius:10px;display:flex;align-items:center;gap:16px;margin-bottom:34px}.action-strip strong{font-size:14px;color:var(--warning-fg);font-weight:550}.action-strip p{font-size:12px;color:var(--warning-fg);margin:5px 0 0}.action-strip .btn{margin-left:auto}.small-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--warning-bg);color:var(--warning-fg);border-radius:8px}.section-title{display:flex;align-items:center;justify-content:space-between;margin:27px 0 17px;gap:15px}.section-title h2{margin:0;font-size:18px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}.task-row{display:flex;align-items:center;padding:23px;gap:18px;border-bottom:1px solid var(--accent-soft)}.task-row:last-child{border-bottom:0}.subject-icon{width:44px;height:48px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.task-main{flex:1;min-width:0}.task-meta{font-size:12px;color:var(--muted);display:flex;gap:8px;margin-bottom:6px}.task-main h3{margin-bottom:7px;font-size:16px;line-height:1.4}.task-due{display:flex;gap:6px;align-items:center;font-size:12px;color:var(--muted)}.completion{min-width:105px;margin:0 16px}.completion strong{font-size:16px;font-weight:550}.completion span{font-size:12px;color:var(--muted);font-weight:400}.progress{height:4px;background:var(--accent-soft);border-radius:4px;margin-top:10px;overflow:hidden}.progress i{display:block;height:100%;background:#7aa8e8;border-radius:4px}.class-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.class-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:23px;cursor:pointer;transition:transform .15s}.class-card:hover{transform:translateY(-3px);border-color:#7aa8e8}.class-card h3{margin:20px 0 8px;font-size:18px}.class-card p{font-size:12px;color:var(--muted)}.class-card footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--accent-soft);padding-top:17px;margin-top:22px;font-size:12px;color:var(--muted)}.class-card footer span{display:flex;align-items:center;gap:6px}.page-footer{max-width:1330px;margin:auto;padding:18px 42px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between}.empty{padding:46px 24px;text-align:center;color:var(--muted);font-size:14px}.empty svg{color:var(--muted)}.empty p{margin:14px 0 0}.loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--muted)}.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%);background:var(--primary);color:var(--on-primary);padding:13px 19px;border-radius:10px;box-shadow:0 8px 40px #17345c25;display:flex;align-items:center;gap:10px;z-index:100;max-width:90vw;font-size:14px}.toast .icon-btn{color:var(--on-primary)}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;background:#17345c55;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.modal{background:var(--surface);border-radius:16px;width:520px;max-width:100%;max-height:90vh;overflow:auto;padding:27px;box-shadow:0 25px 100px #142e3322}.modal.wide{width:900px}.modal header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.modal header h2{margin:0}.login-page{min-height:100vh;display:grid;grid-template-columns:45% 55%;background:var(--surface)}.login-story{background:var(--story-bg);padding:48px 60px;display:flex;flex-direction:column;position:relative}.brand-small{font-size:14px;letter-spacing:2px;color:var(--primary);border-left:1px solid #7aa8e8;padding-left:16px;font-weight:400}.story-main{margin:auto 0;padding:80px 0}.story-main h1{font-size:clamp(40px,5vw,64px);line-height:1.45;font-weight:600;letter-spacing:-2px;color:var(--ink)}.story-main .eyebrow{color:var(--muted)}.story-main>p{font-size:17px;color:var(--primary);line-height:2}.story-note{display:flex;gap:14px;align-items:center;padding-top:48px;font-size:14px;line-height:1.7;color:var(--primary)}.story-note small{color:var(--muted)}.local-note{color:var(--muted);font-size:12px}.login-main{display:flex;align-items:center;justify-content:center;padding:50px}.login-form{width:390px;max-width:100%}.login-form h2{font-size:25px;margin:22px 0 10px}.login-form>p{font-size:14px}.login-form form{margin-top:32px}.login-form details{border-top:1px solid var(--line);padding-top:18px;margin-top:15px;font-size:13px;color:var(--muted)}.login-form summary{cursor:pointer}.demo-accounts{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-top:12px}.demo-accounts button{border:1px solid var(--line);background:var(--surface-hover);text-align:left;border-radius:6px;padding:10px;font-size:12px}.demo-accounts small{display:block;color:var(--muted);margin-top:5px;font-size:11px}.help-text{color:var(--muted);font-size:12px!important;margin-top:20px}.back{margin-bottom:18px}.padded{padding:25px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;white-space:normal;font-size:14px}th{font-weight:500;color:var(--muted);background:var(--surface-hover);padding:17px 21px;white-space:nowrap;font-size:13px}td{padding:20px 21px;border-top:1px solid var(--accent-soft);line-height:1.7}td small{display:block;color:var(--muted);font-size:12px;margin-top:3px}td strong{font-weight:550}.checkbox-label{display:inline-flex;align-items:center;gap:11px;font-size:14px}input[type=checkbox],input[type=radio]{accent-color:var(--primary);width:17px;height:17px;cursor:pointer;flex-shrink:0}.tabs{display:flex;gap:25px;border-bottom:1px solid var(--line);margin:25px 0}.tabs button{border:0;border-bottom:2px solid transparent;padding:15px 8px;background:transparent;font-size:15px;color:var(--muted)}.tabs button.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.class-invite{background:var(--accent-soft);border:1px solid var(--line);border-radius:10px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px}.class-invite>div{display:flex;align-items:center;gap:20px}.class-invite strong{letter-spacing:3px;font-size:22px}.class-invite .muted{font-size:13px}.profile-header{display:flex;gap:20px;align-items:center}.avatar.large{width:60px;height:60px;font-size:22px}.profile-header h2{margin-bottom:6px}.profile-header p{margin-bottom:6px;color:var(--muted);font-size:14px}.profile-header small{color:var(--muted)}.profile-header .btn{margin-left:auto}.profile-class{padding:22px 25px;border-bottom:1px solid var(--line);display:flex;gap:18px;align-items:center}.profile-class:last-child{border-bottom:0}.profile-class h3{margin-bottom:7px}.profile-class p{margin:0;font-size:13px;color:var(--muted)}.profile-class>div{flex:1}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:25px}.invite-input{font-size:24px;letter-spacing:4px}.join-preview{background:var(--surface-hover);padding:24px;border-radius:10px}.join-preview h3{margin:18px 0 10px}.join-preview p{font-size:14px;color:var(--primary)}.settings-line{display:flex;margin:20px 0}.note{background:var(--warning-bg);border:1px solid var(--warning-line);border-radius:8px;padding:17px 20px;margin:20px 0;color:var(--warning-fg);font-size:13px;line-height:1.8}.note p{margin:6px 0 0;font-size:13px}.contact-card{text-align:center;padding:10px 20px 30px}.contact-card h3{margin-top:20px}.contact-card p{white-space:pre-line}.editor-layout,.grading-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:24px}.editor-side{display:flex;flex-direction:column;gap:20px;align-self:start;position:sticky;top:20px;max-height:calc(100dvh - 40px);overflow-y:auto}.editor-side .btn.full{margin-bottom:12px}.editor-side>*{flex-shrink:0}.editor-side .field{margin-top:20px}.editor-layout .two-col{grid-template-columns:1.1fr 1fr}.import-actions{display:flex;flex-wrap:wrap;gap:12px}.import-box{padding-top:24px}.total-line{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:18px 0 3px;font-size:14px}.recent-task{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--accent-soft);padding:15px 0;font-size:13px;line-height:1.6}.recent-task span{flex:1}.recent-task small{display:block;color:var(--muted);font-size:11px}.recent-task:last-child{border-bottom:0}.question-editor{padding:24px;margin-bottom:18px}.question-editor>.spread{margin-bottom:24px}.question-number{font-weight:550;font-size:14px}.inline-controls{display:flex;gap:10px}.question-settings{display:flex;align-items:center;gap:20px;margin-top:20px}.question-settings .field{width:85px;margin-bottom:0}.question-settings .btn{margin-top:22px}.option-edit{display:flex;align-items:center;gap:13px;margin:10px 0}.option-edit>span{font-size:14px;color:var(--muted)}.option-edit input.control{flex:1;min-width:0}.question-editor details{border-top:1px solid var(--line);margin-top:22px;padding-top:17px;font-size:13px;color:var(--muted)}.question-editor summary{cursor:pointer;margin-bottom:12px}.extracted{margin-top:20px;display:flex;gap:15px;flex-wrap:wrap}.extracted>p{width:100%;font-size:13px}.extracted>div{display:flex;flex-direction:column;gap:10px;width:130px}.extracted img{width:130px;height:100px;object-fit:contain;border:1px solid var(--line)}.extracted select{width:100%;min-width:0}.source-preview{margin-top:20px;font-size:13px;color:var(--muted)}.source-preview pre{white-space:pre-wrap;max-height:300px;overflow:auto;color:var(--ink);font-family:inherit}.question-preview{padding:25px;margin-bottom:16px}.question-preview>p{margin:22px 0 15px}.preview-option{font-size:15px;color:var(--primary);padding:8px 13px}.preview-option.correct{background:var(--accent-soft);border-radius:6px;color:var(--ink)}.reference{padding:18px;background:var(--surface-hover);border-radius:8px;color:var(--primary);font-size:14px;margin:23px 0}.reference p{margin:10px 0 0}.student-name{display:flex;align-items:center;gap:12px}.stats-grid.four{grid-template-columns:repeat(4,1fr)}.question-image{max-width:100%;max-height:400px;object-fit:contain;border-radius:8px;margin:16px 0}.answer-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:24px}.answer-panel{padding:30px}.answer-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}.question-stem{font-size:19px;line-height:1.9;font-weight:550;margin:27px 0}.mathtext{white-space:pre-wrap;overflow-wrap:anywhere}.katex-display{overflow-x:auto;overflow-y:hidden;max-width:100%}.answer-options{display:grid;gap:15px;margin:25px 0 35px}.answer-option{display:flex;align-items:center;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:17px 20px;text-align:left;min-height:64px;line-height:1.6}.answer-option:disabled{opacity:1;cursor:default}.answer-option.selected{background:var(--accent-soft);border-color:#7aa8e8;color:var(--ink)}.answer-option svg{margin-left:auto}.choice-letter{font-size:14px;border:1px solid var(--line);border-radius:50%;width:29px;height:29px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.answer-option.selected .choice-letter{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}.answer-index{align-self:start;position:sticky;top:20px}.answer-index>p{font-size:13px}.number-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:22px 0}.number-grid button{border:1px solid var(--line);background:var(--surface);aspect-ratio:1;border-radius:6px;font-size:14px}.number-grid button.done{background:var(--accent-soft);color:var(--ink);border-color:var(--line)}.number-grid button.current{border-color:var(--primary);color:var(--ink);font-weight:600;box-shadow:0 0 0 1px var(--primary)}.upload-answer{display:flex;align-items:center;flex-direction:column;gap:12px;border:1px dashed #7aa8e8;border-radius:10px;padding:28px;background:var(--surface-hover);cursor:pointer;color:var(--primary)}.upload-answer strong{font-size:15px;font-weight:500}.upload-answer span{font-size:12px;color:var(--muted)}.answer-images{display:flex;gap:16px;flex-wrap:wrap;margin:20px 0}.answer-images img{max-width:180px;max-height:160px;border:1px solid var(--line);object-fit:contain;border-radius:7px}.action-buttons,.photo-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.mobile-class-task{display:none}@media(max-width:760px){.mobile-class-task{display:inline-flex}}.people-actions>.text-btn+.text-btn{margin-left:18px}.question-invalid{outline:2px solid var(--danger-fg);outline-offset:2px;scroll-margin-top:90px}.choice-label{font-size:13px;margin-left:auto;white-space:nowrap}.answer-option.option-correct{border-color:var(--primary);box-shadow:inset 4px 0 var(--primary)}.answer-option.option-wrong{border-color:var(--danger-fg);background:var(--danger-bg)}.correct-label{font-weight:700}.answer-readonly{background:var(--surface-hover);resize:none;cursor:default}.grading-photo{width:min(100%,560px)}.photo-preview{width:100%;background:var(--surface);color:var(--primary);border:1px solid var(--line);padding:12px;border-radius:8px;cursor:zoom-in}.answer-images .grading-photo img{width:100%;max-width:100%;max-height:440px;display:block;margin-bottom:8px}.photo-viewer{overflow:auto;max-height:65vh;margin-top:16px;background:var(--surface-hover)}.photo-viewer img{display:block;transform-origin:center}.number-grid button.done:not(.current){border-width:2px;border-color:var(--primary);font-weight:700}@media(max-width:1024px){.grading-people table,.grading-people tbody{display:block;min-width:0;width:100%}.grading-people thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.grading-people tr{display:block;border-bottom:1px solid var(--line);padding:12px 16px}.grading-people td{display:block;width:auto;padding:6px 0;border:0;white-space:normal}.grading-people td[data-label=提交时间]:before{content:"提交时间：";color:var(--muted)}.grading-people td[data-label=分数]:before{content:"分数：";color:var(--muted)}.grading-people td:last-child .btn{width:100%;justify-content:center}}.answer-images>div{display:flex;flex-direction:column}.answer-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);margin-top:35px;padding-top:23px}.save-state{font-size:12px;color:var(--muted);max-width:150px}.submission-result{display:flex;gap:18px;align-items:center;border:1px solid var(--line);background:var(--accent-soft);border-radius:11px;padding:24px;margin-bottom:28px;color:var(--ink)}.submission-result>div{flex:1}.submission-result h3{margin:0 0 8px}.submission-result p{margin:0;font-size:14px}.question-score{color:var(--primary);font-size:14px;margin-top:20px}.student-answer{background:var(--surface-hover);border:1px solid var(--accent-soft);padding:20px;border-radius:8px}.student-answer>span{font-size:12px;color:var(--muted)}.student-answer p{margin:15px 0 0;white-space:pre-wrap}.comment-chips{display:grid;gap:8px;margin:15px 0 24px}.comment-chips button{border:1px solid var(--accent-soft);background:var(--surface-hover);text-align:left;padding:10px;border-radius:6px;font-size:12px;color:var(--primary)}.history-entry{border-top:1px solid var(--line);padding:14px 0}.history-entry p{font-size:13px;margin:7px 0}.report-controls{display:flex;align-items:flex-end;gap:20px}.report-controls .field{margin:0;flex:1}.report-controls .btn{margin-bottom:1px}.report-editor,.report-student{padding:24px;margin:18px 0}.report-facts{display:flex;gap:18px;flex-wrap:wrap;padding:18px 0;font-size:13px;color:var(--muted)}.report-editor small{color:var(--muted)}.report-student h3{margin:20px 0 15px}.report-student p{font-size:15px;line-height:1.9;color:var(--ink)}.report-student small{color:var(--muted)}.ranking{margin-top:25px}.ranking h3{margin:0}.ranking p{font-size:13px}.search-box{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:10px 18px;margin-bottom:24px;color:var(--muted)}.search-box input{border:0;outline:none;min-height:32px;flex:1;min-width:0;font-size:14px;color:var(--ink)}.search-box span{font-size:13px}.student-course{padding:5px 0}.student-course span{font-size:13px}.error{color:var(--danger-fg);padding:15px;font-size:14px}.settings-line input{margin-right:4px}@media(min-width:1550px){.main{padding-top:48px}.task-row{padding:25px}.stat-box{padding:27px}}@media(max-width:1100px){.sidebar{width:190px;padding:25px 15px}.workspace{margin-left:190px}.main{padding:28px 25px}.topbar{padding:0 25px}.completion{margin:0}.class-grid{grid-template-columns:repeat(2,1fr)}.login-story{padding:40px}.task-row{gap:12px;padding:18px}.date-label{display:none}}@media(max-width:760px){.sidebar{position:fixed;inset:auto 0 0;width:auto;height:70px;border-right:0;border-top:1px solid var(--line);padding:6px 14px;display:block}.sidebar>.brand,.workspace-tag,.sidebar-bottom{display:none}.sidebar nav{display:flex;justify-content:space-around}.sidebar nav button{flex:1;justify-content:center;flex-direction:column;gap:3px;padding:7px;font-size:12px}.nav-count{display:none}.workspace{margin-left:0;padding-bottom:70px}.topbar{height:62px;padding:0 18px}.breadcrumb{font-size:12px}.top-actions{gap:10px}.local-pill{font-size:11px}.topbar .btn{padding:9px;font-size:13px}.main{padding:24px 18px 32px}.page-heading{margin-bottom:23px}.page-heading h1{font-size:25px}.page-heading p{font-size:13px}.stats-grid{gap:9px}.stat-box{padding:15px 12px}.stat-box>span{font-size:12px}.stat-box strong{font-size:27px}.stat-box p{font-size:11px}.action-strip{padding:14px;gap:9px}.action-strip p{display:none}.action-strip .btn{padding:9px;font-size:12px}.action-strip strong{font-size:13px}.small-icon{display:none}.task-row{display:grid;grid-template-columns:36px 1fr;gap:12px;padding:18px 15px}.subject-icon{width:36px;height:42px}.task-main h3{font-size:15px}.task-meta{font-size:11px;flex-wrap:wrap}.task-row>.badge,.completion{grid-column:2;justify-self:start}.task-row>.btn{grid-column:2;justify-self:stretch}.class-grid{grid-template-columns:1fr}.class-card{padding:20px}.class-card h3{margin-top:12px}.page-footer{padding:20px;font-size:11px;gap:10px}.page-footer span{max-width:160px}.section-title select{max-width:155px;min-width:0}.section-title h2{font-size:17px}.eyebrow{font-size:11px}.login-page{display:block}.login-story{padding:23px 25px}.login-story .story-main,.login-story .local-note{display:none}.login-main{padding:35px 25px}.login-story .brand{font-size:20px}.login-form h2{font-size:23px}.toast{bottom:84px;width:max-content;max-width:90vw}.modal-back{padding:12px}.modal{padding:21px;max-height:88vh}.two-col{grid-template-columns:1fr}.login-form .two-col{grid-template-columns:1fr 1fr}}@media(max-width:1100px){.editor-layout,.grading-layout{grid-template-columns:minmax(0,1fr) 245px}.answer-layout{grid-template-columns:minmax(0,1fr) 180px}.class-invite>div{flex-wrap:wrap}.editor-layout .two-col{grid-template-columns:1fr}.stats-grid.four{gap:10px}.question-editor{padding:20px}}@media(max-width:760px){.editor-layout,.grading-layout,.answer-layout{grid-template-columns:1fr}.editor-side,.answer-index{position:static}.editor-side{grid-row:1;max-height:none;overflow-y:visible}.editor-side>section:not(:first-child){display:none}.answer-panel{padding:22px 17px}.answer-index{grid-row:1;padding:12px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.answer-index .number-grid{grid-column:1 / -1;grid-template-columns:repeat(10,1fr);gap:5px;margin:0}.answer-index>p,.answer-index>.btn{display:block;margin:0}.answer-index h3{display:none}.answer-index>.muted{grid-column:1 / -1}.answer-index>.help-text{font-size:13px}.answer-index>.btn{width:auto;padding:8px 12px;align-self:center}.answer-index button{font-size:12px}.question-stem{font-size:18px}.question-editor{padding:18px}.inline-controls select{min-width:105px}.question-settings{flex-wrap:wrap;gap:12px}.question-settings>.badge{white-space:normal}.import-actions{gap:8px}.import-actions .btn{font-size:12px;padding:9px}.stats-grid.four{grid-template-columns:1fr 1fr}.report-controls{flex-wrap:wrap;padding:18px;gap:14px}.report-controls .field{min-width:120px}.report-controls>.btn{width:100%}.report-editor .spread{align-items:start;flex-direction:column}.report-editor{padding:20px}.report-facts{gap:12px}.class-invite{flex-direction:column;align-items:stretch;padding:18px}.class-invite>div{gap:10px}.class-invite>div>.muted:last-child{width:100%}.profile-header{flex-wrap:wrap;gap:14px}.profile-header .btn{margin:0;width:100%}.profile-class{flex-wrap:wrap;padding:18px}.profile-class>div{min-width:100%}.profile-class>.btn{flex:1}.submission-result{flex-wrap:wrap;padding:18px}.submission-result h3{font-size:16px}.submission-result>.btn{width:100%}.answer-nav{flex-wrap:wrap}.save-state{max-width:90px;font-size:11px}.task-row>.badge{grid-row:2}.section-title .btn{font-size:12px;padding:9px}.page-heading{flex-wrap:wrap}.page-heading>.btn,.page-heading>a.btn{width:100%}.question-preview{padding:20px}.question-preview>.spread{gap:8px}.question-preview>.spread>strong{font-size:13px}.report-editor textarea{font-size:16px}td,th{padding:15px;min-width:90px}td:first-child{min-width:120px}.modal .table-wrap{margin-inline:-10px}}.focus-task .sidebar{display:none}.focus-task .workspace{margin-left:0;padding-bottom:0}.focus-task .main{max-width:1200px}.focus-task .topbar{display:flex;justify-content:flex-end;height:auto;padding:12px 24px 0;background:var(--bg);border:0}.focus-task .topbar .breadcrumb,.focus-task .topbar .local-pill{display:none}.backup-note{display:flex;align-items:center;gap:16px;justify-content:space-between;margin-top:28px}.backup-note p{margin:0;font-size:13px}.backup-note small{color:var(--muted)}.backup-note .btn{white-space:nowrap}@media(max-width:760px){.backup-note{flex-wrap:wrap}.backup-note .btn{width:100%}.focus-task .toast{bottom:24px}}.mobile-logout{display:none}@media(max-width:760px){.mobile-logout{display:inline-flex;order:3;font-size:12px}}.history-open{width:100%;margin-top:16px}.history-filters{display:grid;grid-template-columns:1fr 1fr;gap:16px}.history-results{max-height:45vh;overflow-y:auto}.history-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.history-row>div{min-width:0}.history-row h3{margin:0 0 8px;overflow-wrap:anywhere}.history-row p{margin:0 0 6px;font-size:14px}.history-row small{color:var(--muted)}.history-row button{flex-shrink:0}.history-pages{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}@media(max-width:760px){.history-filters{grid-template-columns:1fr;gap:0}.history-row{align-items:stretch;flex-direction:column;gap:12px}.history-pages{font-size:14px}}.history-mobile{display:none}@media(max-width:760px){.history-mobile{display:inline-flex}}.school-picker{min-width:0;position:relative}.school-picker .school-options{list-style:none;margin:0;padding:4px;max-height:240px;overflow-y:auto;border:1px solid #7aa8e8;border-radius:8px;background:var(--surface)}.school-options li{padding:10px;cursor:pointer;border-radius:5px;overflow-wrap:anywhere}.school-options li:hover,.school-options li[aria-selected=true]{background:var(--accent-soft)}.school-options li span{display:block;font-size:16px}.school-options small,.school-help{display:block;font-size:14px;line-height:1.5;color:var(--primary)}.login-theme-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}.btn.theme-switch{flex-shrink:0;width:44px;height:44px;min-height:44px;padding:0;justify-content:center;border-color:transparent;background:transparent}.btn.theme-switch:hover{background:var(--accent-soft)}.report-evidence{margin-top:12px}.report-evidence summary{cursor:pointer;color:var(--primary);padding:8px 0}.report-evidence p,.report-evidence li{color:var(--muted);font-size:14px;line-height:1.7}.report-evidence .table-wrap{overflow-x:auto}.report-student>p,.report-editor>p{white-space:pre-line}.question-image,.rich img,.extracted img,.answer-images img{background:#fff;border-radius:6px}@media(max-width:600px){.topbar{height:auto;min-height:62px;padding-top:8px;padding-bottom:8px;gap:8px;flex-wrap:wrap}.breadcrumb{min-width:0}.top-actions{gap:8px;flex-wrap:wrap;justify-content:flex-end}.top-actions .local-pill{display:none}}@media print{:root[data-theme=dark]{--primary: #1d5fd0;--primary-hover: #174da8;--ink: #183153;--muted: #596b83;--line: #dce6f3;--bg: #fff;--accent-soft: #eaf2ff;--surface: #fff;--surface-hover: #f8fbff;--on-primary: #fff;--danger-bg: #fff1ed;--danger-fg: #a03f37;--warning-bg: #fcf4e7;--warning-fg: #76521f;--purple-bg: #f1eef8;--purple-fg: #70578f;color-scheme:light}.theme-switch{display:none!important}}.mobile-new-task{display:none}.person-name{display:inline-flex;align-items:center;gap:4px;font-weight:600;text-align:left}.student-info{display:grid;grid-template-columns:100px minmax(0,1fr);gap:12px;line-height:1.6}.student-info dt{color:var(--muted)}.student-info dd{margin:0;overflow-wrap:anywhere}.student-detail-course{display:block;width:100%;padding:14px;margin-top:12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);text-align:left}.student-detail-course:hover{background:var(--accent-soft)}.student-detail-course strong{display:flex;align-items:center;justify-content:space-between}.student-detail-course span{display:block;margin-top:6px;color:var(--muted);font-size:14px}.brand-home{border:0;background:none;text-align:left;padding:0;color:var(--ink)}.stat-link{text-align:left;color:var(--ink);min-width:0;transition:border-color .15s,background .15s}.stat-link:hover{border-color:var(--primary);background:var(--accent-soft)}.stat-link p{display:flex;align-items:center;justify-content:space-between;gap:6px;color:var(--primary);font-size:14px}.account-menu{position:relative;min-width:0}.account-trigger{display:flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--ink);min-height:44px;padding:4px 8px;max-width:230px}.account-trigger:hover,.account-trigger[aria-expanded=true]{background:var(--accent-soft)}.account-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.account-popover{position:absolute;right:0;top:calc(100% + 8px);z-index:45;width:230px;max-width:calc(100vw - 32px);padding:8px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px #0002}.account-popover p{margin:0;padding:10px 12px;overflow-wrap:anywhere;border-bottom:1px solid var(--line)}.account-popover strong,.account-popover small{display:block}.account-popover small{color:var(--muted);margin-top:4px}.account-popover button{display:flex;align-items:center;gap:10px;min-height:44px;width:100%;padding:10px 12px;border:0;border-radius:7px;background:var(--surface);color:var(--ink);text-align:left}.account-popover button:hover{background:var(--accent-soft)}.auth-fields{border:0;padding:0;margin:0;min-width:0}.auth-error{line-height:1.6;padding:10px 12px;background:var(--danger-bg);border-radius:8px}.login-methods{display:flex;gap:4px;background:var(--bg);padding:4px;border:1px solid var(--line);border-radius:10px;margin:20px 0}.login-methods button{flex:1;min-height:44px;border:0;border-radius:7px;color:var(--muted);background:transparent}.login-methods button[aria-pressed=true]{color:var(--primary);background:var(--surface);box-shadow:0 1px 5px #0001;font-weight:600}.captcha-row{display:flex;align-items:center;gap:12px}.captcha-row input{flex:1;min-width:0}.captcha-row button{padding:0;flex-shrink:0}.captcha-row img{display:block;max-width:100%}.top-actions{gap:12px;min-width:0}.main h1,.class-card h3,.task-main h3{overflow-wrap:anywhere}.search-box input{min-width:0}.search-box select{width:auto;max-width:140px}#overview-tasks{scroll-margin-top:24px}@media(max-width:760px){.mobile-new-task{display:inline-flex;margin-bottom:20px}.people-table{overflow:visible;border:0;background:transparent}.people-table table,.people-table tbody{display:block;min-width:0;width:100%}.people-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.people-table tr{display:block;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:12px}.people-table td{display:block;min-width:0;width:auto;padding:8px 0;border:0;white-space:normal;overflow-wrap:anywhere;font-size:15px}.people-table td:before{content:attr(data-label);display:block;color:var(--muted);font-size:13px;margin-bottom:3px}.people-table td:first-child:before,.people-table td:last-child:before{display:none}.people-table td:first-child{border-bottom:1px solid var(--line)}.topbar{flex-wrap:nowrap;gap:8px}.top-actions{flex-wrap:nowrap;margin-left:auto;gap:4px}.breadcrumb{min-width:0;overflow:hidden;white-space:nowrap}.breadcrumb>span,.breadcrumb>svg{display:none}.account-trigger{max-width:170px;padding:4px;gap:5px}.account-trigger .avatar{width:28px;height:28px}.top-actions>.btn.primary{display:none}.sidebar{height:calc(70px + env(safe-area-inset-bottom));padding-bottom:calc(6px + env(safe-area-inset-bottom))}.workspace{padding-bottom:calc(70px + env(safe-area-inset-bottom))}input,select,textarea{font-size:16px}.help-text,.page-heading p,.stat-box p{font-size:14px;line-height:1.6}.btn,.icon-btn,.text-btn{min-height:44px}.login-main{padding:28px 20px}.captcha-row{flex-wrap:wrap}.captcha-row input{flex-basis:120px}.table-wrap{overscroll-behavior-x:contain}}@media(max-width:420px){.stats-grid:not(.four){grid-template-columns:1fr}.stat-link{display:grid;grid-template-columns:1fr auto;align-items:center;padding:14px 16px}.stat-link strong{margin:0;grid-column:2;grid-row:1 / 3;padding-left:12px}.stat-link p{font-size:13px;justify-content:flex-start}.account-trigger{max-width:150px}.main{padding-left:16px;padding-right:16px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media(max-width:1024px){.editor-layout{grid-template-columns:minmax(0,1fr)}.editor-side{grid-row:auto;position:static;max-height:none;overflow-y:visible}.editor-side>section:not(:first-child){display:none}.history-mobile{display:inline-flex}}.showcase-analysis{display:grid;gap:24px;min-width:0}.showcase-analysis .panel{padding:24px;min-width:0}.showcase-analysis h2{font-size:20px;margin:0 0 12px}.showcase-analysis h3{margin:12px 0 8px}.showcase-analysis p{line-height:1.8}.showcase-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.showcase-metrics strong{display:block;font-size:32px;margin-top:12px}.showcase-metrics small{font-size:14px;font-weight:400;margin-left:8px}.showcase-comment{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.9}.showcase-topics,.showcase-cases{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.showcase-topics>div>div{display:flex;justify-content:space-between;gap:12px}.showcase-topics progress{width:100%;height:10px;accent-color:var(--primary,#2563eb);margin:10px 0 6px}.showcase-analysis .notice{padding:18px 22px;border:1px solid var(--border,#dbe4f0);border-radius:12px}.showcase-analysis .notice p{margin:6px 0 0;font-size:14px}@media(max-width:700px){.showcase-metrics,.showcase-topics,.showcase-cases{grid-template-columns:1fr}.showcase-analysis .panel{padding:18px}.showcase-analysis .section-title{align-items:flex-start;flex-wrap:wrap;gap:10px}.showcase-analysis .section-title input{width:100%;min-width:0}.showcase-analysis h2{font-size:18px}.showcase-analysis .tabs{overflow:auto}}
