@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{--sidebar-width:274px;font-family:Inter,Noto Sans SC,Microsoft YaHei,Arial,sans-serif;color:#171717;background:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}a{color:inherit}.app-shell{min-height:100vh}.topbar{height:65px;border-bottom:1px solid #e8e8e8;display:flex;align-items:center;justify-content:space-between;padding:0 32px;background:#fff;position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:16px;min-width:220px}.brand-symbol{font-family:Georgia,serif;font-size:31px;line-height:1;font-weight:800;letter-spacing:-3px}.brand-symbol span{color:#999}.brand-name{font-size:12px;letter-spacing:.17em;font-weight:800;white-space:nowrap}.brand-name span{font-size:11px;letter-spacing:.05em;color:#777;font-weight:500;margin-left:5px}.topbar-actions{display:flex;align-items:center;gap:22px}.top-link{border:0;background:none;color:#1e1e1e;font-size:12px;font-weight:600;letter-spacing:.03em;padding:10px 0}.top-link:hover{text-decoration:underline;text-underline-offset:4px}.workspace{display:grid;grid-template-columns:274px minmax(0,1fr) 230px;min-height:calc(100vh - 65px)}.sidebar-shell{border-right:1px solid #ebebeb;min-width:0}.sidebar{position:sticky;top:65px;height:calc(100vh - 65px);display:flex;flex-direction:column;padding:28px 16px 15px}.sidebar-top{padding:0 10px 21px}.eyebrow,.section-label{font-size:10px;font-weight:800;letter-spacing:.16em;color:#777;text-transform:uppercase}.search-wrap{height:37px;border:1px solid #e4e4e4;background:#f8f8f8;display:flex;align-items:center;gap:7px;padding:0 11px;margin-bottom:30px}.search-wrap span{font-size:22px;line-height:1;color:#8c8c8c;transform:rotate(-20deg);font-family:Georgia,serif}.search-wrap input{border:0;outline:0;background:none;width:100%;font-size:12px;color:#222}.search-wrap:focus-within{border-color:#999;background:#fff}.sidebar-section{display:flex;align-items:center;justify-content:space-between;padding:0 10px 13px}.text-action{border:0;background:none;color:#444;font-size:11px;padding:0}.text-action:hover{text-decoration:underline}.tree-scroll{overflow:auto;flex:1;scrollbar-color:#ddd transparent;scrollbar-width:thin}.subject-group{margin:0 0 19px}.tree-row{display:flex;align-items:center;justify-content:space-between;min-height:32px;gap:4px}.subject-row{border-top:1px solid #dedede;margin:0 6px 7px;padding:11px 3px 3px;font-size:13px;font-weight:750}.folder-group{min-width:0}.folder-row{padding:0 8px;min-height:31px;font-size:12px;font-weight:650;color:#454545}.folder-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.folder-mark{display:inline-block;margin-right:7px;color:#999;font-size:13px}.note-row{margin:1px 0 1px 5px;padding:0 5px 0 10px;min-height:31px;border-left:2px solid transparent}.note-row.selected{background:#f1f1f1;border-left-color:#191919}.tree-link{border:0;background:none;text-align:left;color:#595959;font-size:12px;min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:7px 0}.note-row.selected .tree-link{color:#111;font-weight:700}.tree-link:hover{color:#111}.note-mark{margin-right:11px;font-size:20px;line-height:0;color:#aaa;vertical-align:middle}.row-actions{display:flex;align-items:center;flex-shrink:0}.row-action{border:0;background:transparent;color:#888;padding:2px 4px;min-width:22px;font-size:16px;line-height:1}.row-action:hover{color:#000;background:#ececec}.sidebar-empty{font-size:12px;line-height:1.7;color:#999;padding:0 10px}.sidebar-footer{border-top:1px solid #ededed;margin-top:15px;margin-bottom:152px;padding:16px 10px 0;font-size:9px;font-weight:800;letter-spacing:.18em;color:#aaa}.main-content{min-width:0;padding:65px clamp(28px,5vw,85px) 80px}.article{max-width:780px;margin:0 auto}.breadcrumb{font-size:11px;letter-spacing:.03em;color:#898989;margin:0 0 30px}.slash{color:#bcbcbc;padding:0 8px}.article-title{font-size:clamp(34px,3.5vw,48px);line-height:1.22;font-weight:760;letter-spacing:-.04em;margin:0 0 18px;overflow-wrap:anywhere}.article-meta{display:flex;align-items:center;gap:11px;color:#8b8b8b;font-size:10px;letter-spacing:.08em}.meta-dot{font-size:17px;line-height:1;color:silver}.article-rule{height:1px;background:#dedede;margin:33px 0 38px}.markdown{font-size:16px;line-height:1.9;letter-spacing:.005em;overflow-wrap:anywhere}.markdown h1,.markdown h2,.markdown h3,.markdown h4{line-height:1.4;letter-spacing:-.025em;scroll-margin-top:85px}.markdown h1{font-size:27px;margin:55px 0 17px}.markdown h2{font-size:22px;margin:45px 0 14px;padding-bottom:8px;border-bottom:1px solid #eee}.markdown h3{font-size:18px;margin:34px 0 10px}.markdown h4{font-size:16px;margin:28px 0 8px}.markdown p{margin:0 0 20px}.markdown a{text-decoration:underline;text-decoration-color:#a2a2a2;text-underline-offset:3px}.markdown a:hover{text-decoration-color:#111}.markdown ul,.markdown ol{padding-left:25px;margin:0 0 20px}.markdown li{padding-left:3px;margin:5px 0}.markdown li::marker{color:#777}.markdown blockquote{margin:25px 0;padding:1px 20px;border-left:3px solid #171717;background:#f8f8f8;color:#555}.markdown blockquote p:last-child{margin-bottom:0}.markdown code{font-family:Cascadia Code,Consolas,SFMono-Regular,monospace;font-size:.88em;background:#f2f2f2;padding:2px 5px;border-radius:2px}.markdown pre{background:#171717;color:#ededed;padding:22px 24px;margin:25px 0 30px;overflow-x:auto;line-height:1.65;border-radius:3px;font-size:13px}.markdown pre code{background:none;padding:0;color:inherit;font-size:inherit}.code-editor pre .hljs-keyword,.code-editor pre .hljs-selector-tag{color:#c586c0;font-weight:600}.code-editor pre .hljs-type,.code-editor pre .hljs-built_in,.code-editor pre .hljs-class{color:#4ec9b0}.code-editor pre .hljs-string,.code-editor pre .hljs-regexp{color:#ce9178}.code-editor pre .hljs-number,.code-editor pre .hljs-literal{color:#b5cea8}.code-editor pre .hljs-comment,.code-editor pre .hljs-quote{color:#6a9955}.code-editor pre .hljs-title,.code-editor pre .hljs-function,.code-editor pre .hljs-attr{color:#dcdcaa}.code-editor pre .hljs-variable,.code-editor pre .hljs-params,.code-editor pre .hljs-property{color:#9cdcfe}.code-editor pre .hljs-meta,.code-editor pre .hljs-symbol{color:#c586c0}.code-editor{margin:25px 0 30px;border:1px solid #2a2a2a;border-radius:5px;overflow:hidden;background:#171717;box-shadow:0 8px 22px #00000012}.code-editor-head{height:39px;background:#252525;border-bottom:1px solid #383838;display:flex;align-items:center;gap:12px;padding:0 15px;color:#b9b9b9}.editor-dots{display:flex;gap:5px;align-items:center}.editor-dots i{display:block;width:7px;height:7px;border-radius:50%;background:#656565}.editor-dots i:first-child{background:#999}.editor-language{font-family:Cascadia Code,Consolas,monospace;font-size:10px;font-weight:700;letter-spacing:.12em}.code-editor-head button{margin-left:auto;border:1px solid #555;background:none;color:#ddd;padding:3px 8px;font-size:10px;border-radius:2px}.code-editor-head button:hover{background:#444}.code-editor-body{display:flex;overflow-x:auto;background:#171717}.editor-lines{flex:none;padding:18px 12px 18px 16px;color:#777;border-right:1px solid #343434;text-align:right;white-space:pre;-webkit-user-select:none;user-select:none;font:13px/1.65 Cascadia Code,Consolas,monospace}.markdown .code-editor-body pre,.chat-markdown .code-editor-body pre{flex:1;min-width:max-content;margin:0;padding:18px 22px;border-radius:0;overflow:visible;box-shadow:none;background:transparent;color:#ededed;font:13px/1.65 Cascadia Code,Consolas,monospace}.markdown .code-editor-body pre code,.chat-markdown .code-editor-body pre code{font:inherit;background:none;padding:0;color:inherit}.markdown img{display:block;max-width:100%;height:auto;margin:25px auto;border:1px solid #eee}.markdown hr{border:0;border-top:1px solid #dedede;margin:35px 0}.markdown table{border-collapse:collapse;display:block;overflow-x:auto;margin:25px 0;max-width:100%;font-size:14px}.markdown th,.markdown td{border:1px solid #dedede;padding:8px 12px;text-align:left;white-space:nowrap}.markdown th{background:#f5f5f5}.markdown .katex-display{overflow-x:auto;overflow-y:hidden;padding:5px 0}.article-end{text-align:center;border-top:1px solid #eee;padding-top:30px;margin-top:75px;font-size:9px;color:#aaa;font-weight:700;letter-spacing:.2em}.toc-shell{border-left:1px solid #ebebeb;padding:0 20px}.toc-inner{position:sticky;top:65px;padding-top:41px;height:calc(100vh - 65px);display:flex;flex-direction:column}.toc-inner .section-label{padding:0 0 15px;border-bottom:1px solid #e5e5e5}.toc-inner nav{overflow:auto;padding-top:16px}.toc-link{display:block;text-decoration:none;font-size:11px;color:#727272;line-height:1.55;padding:7px 0}.toc-link:hover{color:#111}.toc-link.level-2{padding-left:10px}.toc-link.level-3{padding-left:20px;color:#999}.toc-empty{font-size:11px;color:#aaa;line-height:1.6;margin-top:19px}.toc-foot{margin-top:auto;padding:20px 0;font-size:9px;letter-spacing:.17em;color:#bbb;font-weight:700}.empty-state{max-width:570px;margin:15vh auto 0}.empty-number{font-size:10px;font-weight:800;letter-spacing:.2em;color:#999;margin-bottom:29px}.empty-state h1{font-size:clamp(36px,5vw,58px);line-height:1.25;letter-spacing:-.055em;margin:0 0 23px}.empty-state p{font-size:14px;line-height:1.8;color:#777;margin:0 0 28px}.notice{max-width:780px;margin:0 auto 25px;border:1px solid #dedede;background:#f8f8f8;padding:13px 16px;font-size:13px;line-height:1.6}.error-notice{border-color:#cbb;background:#fbf7f7;color:#7a2c2c}.notice code{font-family:Consolas,monospace}.primary,.secondary,.danger{border:1px solid #191919;border-radius:2px;padding:10px 16px;font-size:12px;font-weight:700;min-height:39px}.primary{background:#171717;color:#fff}.primary:hover:not(:disabled){background:#333}.secondary{background:#fff;color:#111;border-color:#d1d1d1}.secondary:hover{border-color:#777}.danger{background:#fff;color:#962f2f;border-color:#d7c0c0;margin-right:auto}.danger:hover{background:#fff6f6}.modal-backdrop{position:fixed;inset:0;background:#0000006b;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:#fff;width:min(100%,480px);max-height:min(90vh,880px);overflow:auto;border:1px solid #d6d6d6;box-shadow:0 18px 60px #00000026;padding:27px 30px 30px}.modal-wide{width:min(100%,880px)}.modal-head{display:flex;justify-content:space-between;align-items:start;border-bottom:1px solid #e5e5e5;padding-bottom:17px;margin-bottom:22px}.modal-head h2{font-size:20px;letter-spacing:-.025em;margin:0}.icon-button{border:0;background:none;font-size:23px;line-height:1;color:#777;padding:0 2px}.icon-button:hover{color:#111}.modal form{display:flex;flex-direction:column;gap:15px}.modal label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:700;color:#333}.modal input:not([type=checkbox]),.modal select{height:40px;border:1px solid #d3d3d3;background:#fff;color:#171717;padding:0 11px;min-width:0;outline:0;border-radius:2px;font-size:13px}.modal input:focus,.modal select:focus{border-color:#111}.modal .muted{font-size:12px;color:#777;line-height:1.65;margin:0 0 4px;font-weight:400}.modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;margin-top:11px}.form-error{font-size:12px;color:#9c2929;background:#fff6f6;border-left:2px solid #ab3e3e;padding:10px;margin:8px 0 0}.import-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:30px}.import-grid>div:first-child{display:flex;flex-direction:column;gap:15px}.import-grid input[type=file]{width:100%;height:auto;padding:9px;border:1px dashed #bbb;font-size:12px}.mode-switch{display:flex;border:1px solid #ddd;width:fit-content}.mode-switch button{background:#fff;border:0;border-right:1px solid #ddd;padding:9px 12px;font-size:11px;color:#555}.mode-switch button:last-child{border-right:0}.mode-switch button.active{background:#171717;color:#fff}.modal .small{font-size:11px;margin-top:-8px}.preview-panel{border-left:1px solid #e7e7e7;padding-left:25px;min-width:0}.preview-summary{font-size:12px;color:#444;margin:15px 0}.preview-list{max-height:260px;overflow:auto;border-top:1px solid #eee;margin-bottom:14px}.preview-row{display:flex;align-items:center;justify-content:space-between;gap:7px;padding:10px 0;border-bottom:1px solid #eee;font-size:11px;line-height:1.4}.preview-path{overflow-wrap:anywhere}.conflict{color:#8f3737;border:1px solid #e3caca;padding:2px 5px;white-space:nowrap;font-size:10px}.modal .check-label{display:flex;flex-direction:row;align-items:center;font-size:11px;margin:0 0 15px;line-height:1.5}.check-label input{accent-color:#111}.mobile-menu,.mobile-scrim{display:none}.mascot-dock{position:fixed;left:calc((var(--sidebar-width) - 116px)/2);right:auto;bottom:17px;z-index:40;display:flex;flex-direction:column;align-items:flex-start}.mascot-dock.is-open{left:20px}.mascot-button{width:116px;min-height:155px;border:0;background:none;padding:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;filter:drop-shadow(0 5px 7px rgba(0,0,0,.13));transition:transform .18s ease}.mascot-button:hover{transform:translateY(-5px)}.mascot-button img{width:105px;height:130px;object-fit:contain;object-position:bottom}.mascot-button span{background:#171717;color:#fff;padding:6px 13px;border-radius:30px;font-size:11px;white-space:nowrap;margin-top:-5px;font-weight:700;letter-spacing:.04em}.mascot-dock.is-open .mascot-button{display:none}.chat-panel{width:min(390px,calc(100vw - 28px));height:min(580px,calc(100vh - 115px));margin-bottom:10px;background:#fff;border:1px solid #d6d6d6;box-shadow:0 16px 50px #0000002e;display:flex;flex-direction:column;overflow:hidden;border-radius:8px}.chat-panel.visitor{height:auto}.chat-head{height:66px;flex:none;border-bottom:1px solid #e9e9e9;display:flex;align-items:center;justify-content:space-between;padding:0 15px 0 12px}.chat-head-title{display:flex;align-items:center;gap:10px}.chat-head-title>div:last-child{display:flex;flex-direction:column;gap:3px}.chat-head-title strong{font-size:13px}.chat-head-title span:not(.chat-avatar){font-size:10px;color:#888}.chat-avatar{width:40px;height:40px;border:1px solid #ddd;border-radius:50%;background:#f7f7f7;overflow:hidden;display:flex;align-items:flex-start;justify-content:center}.chat-avatar img{width:45px;height:65px;object-fit:cover;object-position:center top;margin-top:1px}.chat-messages{flex:1;overflow-y:auto;padding:19px 17px;background:#fafafa;scrollbar-color:#ddd transparent;scrollbar-width:thin}.chat-welcome{background:#fff;border:1px solid #ececec;padding:16px;font-size:12px;line-height:1.65;color:#333}.chat-welcome strong{font-size:14px}.chat-welcome p{margin:8px 0 12px}.chat-welcome small{font-size:10px;color:#999;line-height:1.5;display:block}.chat-message{margin:0 0 15px;max-width:92%;display:flex;flex-direction:column;gap:5px}.chat-message.user{margin-left:auto;align-items:flex-end}.chat-speaker{font-size:10px;color:#888}.chat-bubble{background:#fff;border:1px solid #e4e4e4;padding:11px 13px;border-radius:5px;font-size:12px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}.chat-message.user .chat-bubble{background:#202020;color:#fff;border-color:#202020}.chat-thinking{font-size:11px;color:#777;padding:5px 0 10px}.chat-error{font-size:11px;line-height:1.5;color:#a23535;margin:8px 0}.chat-markdown{white-space:normal}.chat-markdown p{margin:0 0 10px}.chat-markdown p:last-child{margin-bottom:0}.chat-markdown ul,.chat-markdown ol{padding-left:19px;margin:7px 0}.chat-markdown li{margin:4px 0}.chat-markdown .katex-display{overflow:auto;padding:5px 0}.chat-markdown code{font-family:Cascadia Code,Consolas,monospace;font-size:.92em;background:#f0f0f0;padding:1px 3px}.chat-markdown .code-editor{margin:10px 0}.chat-markdown .code-editor-body pre,.chat-markdown .editor-lines{font-size:11px}.chat-compose{border-top:1px solid #e6e6e6;padding:11px 13px 12px;background:#fff}.chat-compose textarea{width:100%;min-height:66px;max-height:130px;resize:vertical;border:1px solid #d4d4d4;border-radius:3px;padding:9px 10px;font-size:12px;line-height:1.5;font-family:inherit;outline:0}.chat-compose textarea:focus{border-color:#222}.chat-compose-foot{display:flex;align-items:center;justify-content:space-between;gap:7px;margin-top:8px}.chat-compose-foot span{color:#999;font-size:10px}.chat-compose-foot .primary{min-height:31px;padding:5px 14px;font-size:11px}@media(max-width:1100px){:root{--sidebar-width:250px}.workspace{grid-template-columns:250px minmax(0,1fr)}.toc-shell{display:none}.main-content{padding:54px clamp(25px,5vw,75px) 75px}}@media(min-width:701px)and (max-width:1100px){.main-content{padding-right:130px}}@media(max-width:700px){.topbar{height:58px;padding:0 18px}.brand{min-width:0;gap:10px}.brand-name{font-size:11px}.brand-name span{display:none}.topbar-actions{gap:12px}.top-link{font-size:11px}.mobile-menu{display:block;font-size:19px;margin-right:3px}.workspace{display:block;min-height:calc(100vh - 58px)}.sidebar-shell{position:fixed;top:58px;left:0;bottom:0;width:min(300px,84vw);background:#fff;z-index:35;transform:translate(-102%);transition:transform .2s ease;box-shadow:6px 0 20px #00000014}.sidebar-shell.mobile-open{transform:translate(0)}.sidebar{top:58px;height:calc(100vh - 58px)}.mobile-scrim{display:block;position:fixed;inset:58px 0 0;background:#00000040;z-index:30}.main-content{padding:34px 22px 65px}.article-title{font-size:35px}.breadcrumb{margin-bottom:24px}.article-rule{margin:25px 0 30px}.markdown{font-size:16px}.markdown pre{padding:17px;font-size:12px}.empty-state{margin-top:13vh}.modal{padding:22px 20px}.import-grid{grid-template-columns:1fr;gap:25px}.preview-panel{border-left:0;border-top:1px solid #eee;padding:20px 0 0}}@media(max-width:700px){.main-content{padding-bottom:130px}.sidebar-footer{margin-bottom:15px}.mascot-dock{left:11px;right:auto;bottom:11px}.mascot-button{width:70px;min-height:79px;filter:drop-shadow(0 3px 7px rgba(0,0,0,.18))}.mascot-button img{width:62px;height:62px;object-fit:cover;object-position:center top;border:2px solid #fff;border-radius:50%;background:#f5f5f5}.mascot-button span{font-size:9px;padding:4px 8px;margin-top:-3px}.mascot-dock.is-open{inset:0;display:block;z-index:48}.chat-panel{width:100vw;height:100dvh;max-height:none;margin:0;border:0;border-radius:0}.chat-head{height:60px}.chat-messages{padding:18px}.chat-compose{padding-bottom:max(12px,env(safe-area-inset-bottom))}.markdown .code-editor-body pre{font-size:12px;padding:17px}.editor-lines{font-size:12px;padding:17px 10px}}