@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{color-scheme:light;font-family:Inter,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;color:#202421;background:#f3f4f1;--ink: #202421;--muted: #69716b;--line: #dfe3dd;--panel: #ffffff;--canvas: #f3f4f1;--green: #126a4a;--green-soft: #e8f3ee;--ds: #1d7654;--co: #b96a1f;--os: #3568a8;--cn: #9b4453;--hm: #16766f;--la: #a26018;--ps: #9a4659;--header-height: 68px}*{box-sizing:border-box}[hidden]{display:none!important}html{min-width:320px;scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh;background:var(--canvas)}button,input,select{font:inherit}button,a,select,input[type=checkbox]{-webkit-tap-highlight-color:transparent}button{color:inherit}svg{width:18px;height:18px;flex:0 0 auto}.topbar{position:sticky;top:0;z-index:50;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1440px)/2));background:#fffffff5;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand-mark{display:grid;place-items:center;width:40px;height:40px;background:#202421;color:#fff;border-radius:6px;font-size:15px;font-weight:800}.brand-mark.is-math{font-size:11px}.brand-copy{display:grid;line-height:1.15}.brand-copy strong{font-size:15px}.brand-copy small{margin-top:4px;color:var(--muted);font-size:11px}.dataset-summary{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px}.dataset-summary strong{color:var(--ink)}.live-dot{width:7px;height:7px;border-radius:50%;background:#2c936a;box-shadow:0 0 0 4px #e8f3ee}.icon-button{display:inline-grid;place-items:center;width:38px;height:38px;padding:0;border:1px solid var(--line);border-radius:6px;background:#fff;cursor:pointer}.icon-button:hover{background:#f4f6f3}.mobile-filter-button{display:none}.search-band{background:#fff;border-bottom:1px solid var(--line)}.search-inner{width:min(1120px,calc(100% - 48px));margin:0 auto;padding:39px 0 29px}.bank-switch{display:inline-grid;grid-template-columns:1fr 1fr;gap:3px;margin-bottom:25px;padding:3px;border:1px solid #d9ddd8;border-radius:7px;background:#eef0ed}.bank-switch button{display:inline-flex;align-items:center;gap:8px;min-height:35px;padding:0 12px;border:0;border-radius:5px;background:transparent;color:#646c66;font-size:12px;cursor:pointer}.bank-switch button span{color:#818983;font-size:9px;font-weight:800}.bank-switch button.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 5px #19201c1f;font-weight:700}.bank-switch button.is-active span{color:var(--green)}.search-title-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:23px}.eyebrow{margin:0 0 8px;color:var(--green);font-size:12px;font-weight:700}h1,h2,h3,p{letter-spacing:0}h1{margin:0;font-size:clamp(27px,3vw,36px);line-height:1.18;font-weight:720}.coverage-metrics{display:flex;gap:24px;color:var(--muted);font-size:12px}.coverage-metrics span{display:grid;gap:2px}.coverage-metrics strong{color:var(--ink);font-size:19px}.search-form{position:relative;display:grid;grid-template-columns:26px minmax(0,1fr) 38px auto;align-items:center;gap:8px;min-height:62px;padding:7px 8px 7px 18px;border:2px solid #2d332f;border-radius:7px;background:#fff;box-shadow:0 7px 25px #1f272212}.search-form:focus-within{border-color:var(--green);box-shadow:0 0 0 4px #126a4a1a}.search-form>svg{width:21px;height:21px;color:#535b55}.search-form input{min-width:0;height:44px;border:0;outline:none;color:var(--ink);background:transparent;font-size:16px}.search-form input::placeholder{color:#909791}.search-form input:placeholder-shown+.clear-search{visibility:hidden}.clear-search{display:grid;place-items:center;width:34px;height:34px;padding:0;border:0;border-radius:5px;background:transparent;color:var(--muted);cursor:pointer}.clear-search:hover{background:#eef0ed}.search-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:104px;height:46px;padding:0 18px;border:0;border-radius:5px;background:var(--ink);color:#fff;font-weight:650;cursor:pointer}.search-button:hover{background:#343a36}.quick-search{display:flex;align-items:center;gap:8px;margin-top:15px;overflow-x:auto;scrollbar-width:none}.quick-search::-webkit-scrollbar{display:none}.quick-search>span{margin-right:4px;color:var(--muted);font-size:12px;white-space:nowrap}.quick-search button{padding:6px 10px;border:1px solid var(--line);border-radius:5px;background:#fafbf9;color:#505852;font-size:12px;white-space:nowrap;cursor:pointer}.quick-search button:hover{border-color:#9eb5a7;background:var(--green-soft);color:var(--green)}.workspace{display:grid;grid-template-columns:250px minmax(0,1fr);gap:30px;width:min(1240px,calc(100% - 48px));margin:0 auto;padding:31px 0 72px}.filter-panel{position:sticky;top:calc(var(--header-height) + 24px);align-self:start;max-height:calc(100vh - var(--header-height) - 48px);padding-right:19px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#cbd0cb transparent}.filter-mobile-head{display:none}.filter-section{padding:0 0 24px;margin-bottom:22px;border-bottom:1px solid var(--line)}.filter-section:last-child{border:0}.filter-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px;font-size:13px;font-weight:700}.filter-heading button{padding:2px;border:0;background:transparent;color:#858d87;font-size:11px;cursor:pointer}.filter-heading button:hover{color:var(--green)}.check-row{position:relative;display:grid;grid-template-columns:17px minmax(0,1fr) auto;align-items:center;gap:9px;min-height:35px;font-size:13px;cursor:pointer}.check-row:after{position:absolute;left:-9px;width:3px;height:16px;border-radius:3px;background:var(--subject-color);content:""}.subject-hm{--subject-color: var(--hm)}.subject-la{--subject-color: var(--la)}.subject-ps{--subject-color: var(--ps)}.check-row.is-disabled{opacity:.45;cursor:default}.check-row input,.favorite-toggle input{width:16px;height:16px;margin:0;accent-color:var(--green);cursor:pointer}.check-row small{color:#8a918b;font-size:11px;font-variant-numeric:tabular-nums}.year-range{display:grid;grid-template-columns:1fr 18px 1fr;align-items:end;gap:7px}.year-range>svg{width:14px;height:14px;margin-bottom:10px;color:#949a95}.year-range label{display:grid;gap:5px}.year-range label span{color:var(--muted);font-size:10px}select{height:36px;padding:0 28px 0 9px;border:1px solid #d6dbd5;border-radius:5px;outline:none;background:#fff;color:var(--ink);font-size:12px}select:focus{border-color:var(--green)}.segmented-control{display:grid;grid-template-columns:1fr 1fr;padding:3px;border:1px solid #d9ddd8;border-radius:6px;background:#e9ebe8}.segmented-control button{height:31px;padding:0 6px;border:0;border-radius:4px;background:transparent;color:#616963;font-size:12px;cursor:pointer}.segmented-control button.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 4px #19201c1f;font-weight:650}.segmented-control.three-columns{grid-template-columns:repeat(3,minmax(0,1fr))}.difficulty-filter{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.difficulty-filter button{display:grid;place-items:center;gap:2px;min-width:0;min-height:45px;padding:4px 1px;border:1px solid #d9ddd8;border-radius:5px;background:#fff;color:#7b837d;font-size:8px;cursor:pointer}.difficulty-filter button span{color:#424943;font-size:12px;font-weight:750}.difficulty-filter button.is-active{border-color:#91b6a2;background:var(--green-soft);color:var(--green)}.record-tools{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:13px}.record-tools button{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-width:0;height:32px;padding:0 5px;border:1px solid #d6dbd5;border-radius:5px;background:#fff;color:#5c645e;font-size:10px;cursor:pointer}.record-tools button:hover{border-color:#9fb6a7;color:var(--green)}.record-tools svg{width:13px;height:13px}.full-select{width:100%}.favorite-toggle{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12px;cursor:pointer}.favorite-toggle svg{width:15px;margin-left:auto;color:#7c847e}.topic-list{display:grid;gap:2px}.topic-list button{display:flex;align-items:center;justify-content:space-between;min-height:32px;padding:4px 6px;border:0;border-radius:4px;background:transparent;color:#4e5650;font-size:12px;text-align:left;cursor:pointer}.topic-list button:hover{background:#e8ebe7;color:var(--green)}.topic-list small{color:#8b928c;font-size:10px}.results-panel{min-width:0}.results-toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;min-height:52px;margin-bottom:17px}.results-toolbar p{max-width:600px;margin:0 0 5px;overflow:hidden;color:var(--muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.results-toolbar h2{margin:0;font-size:19px;line-height:1.3}.active-filters{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap}.active-filters button{display:inline-flex;align-items:center;gap:4px;height:28px;padding:0 7px 0 9px;border:1px solid #cbd9d1;border-radius:5px;background:var(--green-soft);color:var(--green);font-size:11px;cursor:pointer}.active-filters svg{width:13px;height:13px}.result-list{display:grid;gap:9px}.question-card{position:relative;min-height:128px;border:1px solid #dde1dc;border-radius:7px;background:var(--panel);overflow:hidden;transition:border-color .13s ease,box-shadow .13s ease,transform .13s ease}.question-card:hover{border-color:#b9c4bc;box-shadow:0 8px 22px #1e262112;transform:translateY(-1px)}.question-open{display:grid;grid-template-columns:74px minmax(0,1fr) 22px;gap:20px;width:100%;min-height:126px;padding:21px 54px 18px 20px;border:0;background:transparent;text-align:left;cursor:pointer}.question-index{position:relative;display:grid;align-content:start;gap:5px;min-height:52px;padding-left:12px}.question-index:before{position:absolute;top:1px;bottom:0;left:0;width:4px;border-radius:3px;background:var(--subject-color);content:""}.subject-ds{--subject-color: var(--ds)}.subject-co{--subject-color: var(--co)}.subject-os{--subject-color: var(--os)}.subject-cn{--subject-color: var(--cn)}.question-index strong{font-size:17px;font-variant-numeric:tabular-nums}.question-index span{color:var(--muted);font-size:11px}.question-body{min-width:0}.question-meta{display:flex;align-items:center;gap:8px;margin-bottom:9px;color:#7c847e;font-size:10px}.question-meta span+span:before{margin-right:8px;color:#bdc2bd;content:"·"}.question-meta .subject-label{color:var(--ink);font-weight:650}.question-meta .status-label{font-weight:650}.question-meta .status-mastered{color:var(--green)}.question-meta .status-uncertain{color:#a25b1b}.question-meta .dependency-label{color:var(--green);font-weight:650}.question-meta .dependency-label svg{width:11px;height:11px;margin-right:3px}.question-meta .source-label{display:inline-flex;align-items:center;gap:3px;font-weight:650}.question-meta .source-label svg{width:11px;height:11px}.question-meta .source-verified{color:var(--green)}.question-meta .source-practice{color:#95601f}.question-preview{display:-webkit-box;margin:0;overflow:hidden;color:#2d322e;font-family:Songti SC,"Noto Serif CJK SC",serif;font-size:14px;line-height:1.72;-webkit-box-orient:vertical;-webkit-line-clamp:2}.topic-tags,.dialog-tags{display:flex;gap:6px;margin-top:12px;overflow:hidden}.math-source-notice{display:flex;align-items:flex-start;gap:8px;margin:-4px 0 22px;padding:10px 12px;border-left:3px solid #78ae93;background:#f0f6f2;color:#4e6356;font:11px/1.55 Inter,PingFang SC,sans-serif}.math-source-notice.source-practice{border-color:#c99759;background:#fff7eb;color:#78572d}.math-source-notice svg{width:14px;height:14px;margin-top:1px}.topic-tags span,.dialog-tags span{display:inline-flex;align-items:center;height:23px;padding:0 7px;border:1px solid #dfe4df;border-radius:4px;background:#f6f7f5;color:#68716a;font-size:10px;white-space:nowrap}.topic-tags .more-topic{padding:0 6px;color:#8c938e}.open-icon{align-self:center;color:#a2a9a3}.card-favorite{position:absolute;top:14px;right:14px;display:grid;place-items:center;width:32px;height:32px;padding:0;border:0;border-radius:5px;background:transparent;color:#9aa19b;cursor:pointer}.card-favorite:hover{background:#f1f3f0;color:var(--ink)}.card-favorite.is-favorite{color:#b86a1f}.card-favorite.is-favorite svg,.favorite-button.is-favorite svg{fill:currentColor}.empty-state{padding:72px 24px;border:1px solid var(--line);border-radius:7px;background:#fff;text-align:center}.empty-state svg{width:30px;height:30px;color:#8f9791}.empty-state h3{margin:15px 0 6px;font-size:16px}.empty-state p{margin:0 0 18px;color:var(--muted);font-size:13px}.empty-state button{height:36px;padding:0 14px;border:1px solid #cdd2cd;border-radius:5px;background:#fff;cursor:pointer}.load-error{padding:36px;border:1px solid #dec8c8;border-radius:7px;background:#fff4f4;color:#903d3d}.pagination{display:flex;align-items:center;justify-content:center;gap:5px;margin-top:28px}.pagination button{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 8px;border:1px solid #d8ddd8;border-radius:5px;background:#fff;font-size:12px;cursor:pointer}.pagination button:hover:not(:disabled),.pagination button[aria-current=page]{border-color:var(--green);background:var(--green);color:#fff}.pagination button:disabled{color:#b8beb9;cursor:default}.pagination span{color:var(--muted);font-size:12px}.question-dialog{width:min(960px,calc(100vw - 40px));max-width:none;max-height:calc(100vh - 40px);margin:auto;padding:0;border:0;border-radius:8px;background:#fff;box-shadow:0 28px 80px #1218144d;overflow:hidden}.question-dialog::backdrop{background:#181d1a94;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.dialog-shell{display:grid;grid-template-rows:auto minmax(0,1fr) auto;max-height:calc(100vh - 40px)}.dialog-header{display:flex;align-items:center;justify-content:space-between;min-height:70px;padding:12px 19px 12px 25px;border-bottom:1px solid var(--line)}#dialog-meta{display:flex;align-items:center;gap:14px;min-width:0}.dialog-actions,.question-navigation{display:flex;align-items:center}.dialog-actions{flex:0 0 auto;gap:10px}.question-navigation{gap:5px;padding-right:10px;border-right:1px solid var(--line)}.question-navigation .icon-button:disabled{background:#f7f8f6;color:#bdc2bd;cursor:default}.dialog-index{padding:7px 9px;border-left:4px solid var(--subject-color);background:#f4f6f3;font-size:12px;font-weight:700}#dialog-meta>div:last-child{display:grid;gap:3px;min-width:0}#dialog-meta strong{overflow:hidden;font-size:13px;text-overflow:ellipsis;white-space:nowrap}#dialog-meta span{color:var(--muted);font-size:10px}.dialog-scroll{overflow:auto}#dialog-question{padding:27px 34px 30px}.question-loading,.question-load-error{display:grid;place-items:center;align-content:center;gap:12px;min-height:250px;color:#727a74;font:12px/1.5 Inter,PingFang SC,sans-serif;text-align:center}.question-loading strong,.question-load-error strong{color:#303632;font-size:14px}.loading-spinner{width:28px;height:28px;border:3px solid #dce6df;border-top-color:var(--green);border-radius:50%;animation:loading-spin .7s linear infinite}.question-load-error button{display:inline-flex;align-items:center;gap:6px;height:36px;margin-top:3px;padding:0 12px;border:1px solid #c9d4cc;border-radius:5px;background:#fff;color:var(--green);cursor:pointer}@keyframes loading-spin{to{transform:rotate(360deg)}}.dialog-tags{margin:0 0 20px;flex-wrap:wrap}.dependency-context{margin:0 -34px 28px;border-top:1px solid #d9e3dc;border-bottom:1px solid #d9e3dc;background:#f5f8f5}.dependency-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:52px;padding:10px 34px;border-bottom:1px solid #dfe7e1;color:var(--green)}.dependency-heading>div{display:inline-flex;align-items:center;gap:8px}.dependency-heading strong{font-size:13px}.dependency-heading span{color:#69736c;font-size:11px}.dependency-item{padding:0 34px}.dependency-item+.dependency-item{border-top:1px solid #dfe7e1}.dependency-item summary{display:grid;grid-template-columns:auto minmax(0,1fr) 18px;align-items:center;gap:10px;min-height:48px;color:#303631;cursor:pointer;list-style:none}.dependency-item summary::-webkit-details-marker{display:none}.dependency-item summary>span{font-size:12px;font-weight:750}.dependency-item summary small{color:#788078;font-size:10px}.dependency-item summary svg{width:16px;height:16px;color:#7a847d;transition:transform .14s ease}.dependency-item:not([open]) summary svg{transform:rotate(-90deg)}.dependency-content{padding:3px 0 25px;color:#39403b;font-size:14px}.current-question-heading{display:flex;align-items:center;gap:10px;margin:0 0 15px;color:var(--green);font-size:11px;font-weight:750}.current-question-heading:after{height:1px;flex:1;background:#dfe4df;content:""}.question-content,.explanation-content{color:#252a26;font-family:Songti SC,"Noto Serif CJK SC",serif;font-size:15px;line-height:1.82;overflow-wrap:anywhere}.question-content>div:only-child,.explanation-content>div:only-child{display:contents}.question-content p:first-child,.explanation-content p:first-child{margin-top:0}.question-content p,.explanation-content p{margin:.7em 0}.question-content .choice-container{margin-top:22px}.choice-container form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.choice-option{display:flex;align-items:flex-start;gap:10px;min-width:0;padding:11px 13px;border:1px solid #e0e3df;border-radius:5px;background:#fafbf9}.choice-option input{display:none}.choice-label{flex:0 0 20px;color:var(--green);font-family:Inter,sans-serif;font-weight:750}.choice-text{min-width:0}.question-content img,.explanation-content img,.question-content svg,.explanation-content svg{display:block;width:auto;max-width:100%;height:auto;margin:18px auto}.question-content svg,.explanation-content svg{min-height:80px;max-height:560px}.question-content table,.explanation-content table{width:100%;margin:18px 0;border-collapse:collapse;font-family:Inter,PingFang SC,sans-serif;font-size:13px}.question-content th,.question-content td,.explanation-content th,.explanation-content td{padding:8px;border:1px solid #d9ddd9;text-align:left}.question-content pre,.explanation-content pre{max-width:100%;padding:15px 17px;border:1px solid #dfe3de;border-radius:5px;background:#f3f5f2!important;overflow-x:auto;color:#29302b;font:13px/1.65 SFMono-Regular,Consolas,monospace;white-space:pre}.question-content code,.explanation-content code{padding:.1em .3em;border-radius:3px;background:#f0f2ef;font-family:SFMono-Regular,Consolas,monospace;font-size:.9em}.question-content pre code,.explanation-content pre code{padding:0;background:transparent}.katex{display:inline-block;max-width:100%;overflow-x:auto;vertical-align:middle}.math-preview .katex{overflow:hidden}.math-content .katex-display{max-width:100%;margin:1em 0;padding:3px 0;overflow-x:auto;overflow-y:hidden}.math-content a{color:var(--green)}.math-content .choice-text .katex{white-space:normal}.answer-section{padding:0 34px 34px}.reveal-answer{display:flex;align-items:center;justify-content:center;gap:9px;width:100%;height:47px;border:1px solid #bad0c3;border-radius:6px;background:var(--green-soft);color:var(--green);font-weight:650;cursor:pointer}.reveal-answer:hover{background:#dcece4}.answer-content{border-top:1px solid var(--line);padding-top:24px}.answer-key{display:flex;align-items:center;gap:12px;margin-bottom:19px;font-size:12px}.answer-key span{color:var(--muted)}.answer-key strong{display:inline-grid;place-items:center;min-width:34px;height:28px;padding:0 9px;border-radius:4px;background:var(--green);color:#fff;font-size:13px}.math-answer-key{align-items:flex-start}.math-answer-key strong{display:block;width:min(100%,760px);height:auto;min-height:28px;padding:5px 9px;overflow-x:auto;line-height:1.55}.dialog-footer{display:flex;align-items:center;gap:10px;min-height:68px;padding:10px 20px;border-top:1px solid var(--line);background:#fafbf9}.dialog-footer button,.dialog-footer a{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:38px;padding:0 12px;border:1px solid #d5dad5;border-radius:5px;background:#fff;color:#4f5751;font-size:12px;text-decoration:none;cursor:pointer}.dialog-footer button:hover,.dialog-footer a:hover{border-color:#abb8af}.favorite-button.is-favorite{color:#a35f1d}.mastery-control{display:flex;gap:6px}.mastery-control button[data-status=uncertain].is-active{border-color:#d6a76e;background:#fff5e8;color:#9a5818}.mastery-control button[data-status=mastered].is-active{border-color:#9ec6af;background:var(--green-soft);color:var(--green)}.dialog-footer #source-link{margin-left:auto}.filter-backdrop{display:none}.toast{position:fixed;z-index:250;right:22px;bottom:22px;max-width:min(420px,calc(100vw - 32px));padding:12px 15px;border:1px solid #b9d0c2;border-radius:6px;background:#173b2d;color:#fff;box-shadow:0 12px 32px #121c1633;font-size:12px}.toast.is-error{border-color:#d7aaaa;background:#723d3d}@media(max-width:900px){.topbar{padding:0 18px}.dataset-summary span:last-child{display:none}.mobile-filter-button{display:inline-grid}.workspace{grid-template-columns:1fr;width:min(100% - 32px,760px)}.filter-panel{position:fixed;z-index:101;top:0;right:0;bottom:0;width:min(340px,calc(100vw - 42px));max-height:none;padding:0 22px 40px;background:#fff;box-shadow:-16px 0 46px #181e1a33;transform:translate(105%);transition:transform .18s ease}.filters-open{overflow:hidden}.filters-open .filter-panel{transform:translate(0)}.filter-mobile-head{position:sticky;top:0;z-index:1;display:flex;align-items:center;justify-content:space-between;min-height:66px;margin:0 -22px 22px;padding:0 18px 0 22px;border-bottom:1px solid var(--line);background:#fff}.filter-backdrop{position:fixed;z-index:100;inset:0;background:#1b201d70}.filters-open .filter-backdrop{display:block}}@media(max-width:640px){:root{--header-height: 60px}.topbar{height:var(--header-height);padding:0 14px}.brand-mark{width:36px;height:36px;font-size:13px}.brand-copy small,.dataset-summary{display:none}.search-inner{width:calc(100% - 28px);padding:26px 0 20px}.bank-switch{width:100%;margin-bottom:20px}.bank-switch button{justify-content:center;padding:0 7px}.search-title-row{margin-bottom:18px}h1{font-size:27px}.coverage-metrics{display:none}.search-form{grid-template-columns:22px minmax(0,1fr) 32px 45px;gap:5px;min-height:56px;padding-left:13px}.search-form input{font-size:14px}.search-button{min-width:44px;width:44px;padding:0}.search-button span{display:none}.quick-search{margin-right:-14px}.workspace{width:calc(100% - 20px);padding-top:19px}.results-toolbar{align-items:flex-start;min-height:43px;margin:0 4px 13px}.results-toolbar h2{font-size:17px}.active-filters{max-width:45%}.question-card,.question-open{min-height:143px}.question-open{grid-template-columns:48px minmax(0,1fr);gap:12px;padding:17px 40px 15px 13px}.question-index{padding-left:9px}.question-index strong{font-size:14px}.question-index span{font-size:9px}.question-preview{font-size:13px;line-height:1.67;-webkit-line-clamp:3}.question-meta{gap:5px}.question-meta span+span:before{margin-right:5px}.topic-tags{margin-top:9px}.topic-tags span:nth-child(n+3){display:none}.open-icon{display:none}.card-favorite{top:9px;right:7px}.question-dialog{width:100vw;max-height:100dvh;height:100dvh;border-radius:0}.dialog-shell{height:100dvh;max-height:100dvh}.dialog-header{min-height:60px;gap:7px;padding:9px 8px 9px 12px}#dialog-meta{gap:8px}.dialog-actions{gap:7px}.question-navigation{gap:3px;padding-right:7px}.dialog-actions .icon-button{width:34px;height:34px}.dialog-index{padding:6px 7px;font-size:10px}#dialog-question{padding:21px 17px 25px}.dialog-tags{margin-bottom:15px}.math-source-notice{margin-bottom:17px}.dependency-context{margin:0 -17px 24px}.dependency-heading{align-items:flex-start;flex-direction:column;gap:3px;padding:11px 17px}.dependency-item{padding:0 17px}.question-content,.explanation-content{font-size:14px;line-height:1.8}.choice-container form{grid-template-columns:1fr}.answer-section{padding:0 17px 25px}.dialog-footer{display:grid;grid-template-columns:38px minmax(0,1fr) 38px;gap:7px;min-height:62px;padding:8px 10px}.dialog-footer>button,.dialog-footer>a{width:38px;padding:0}.dialog-footer>button span,.dialog-footer>a span{display:none}.mastery-control{display:grid;grid-template-columns:1fr 1fr}.mastery-control button{min-width:0}.dialog-footer #source-link{margin-left:0}.toast{right:12px;bottom:12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}