@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{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.7"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.katex .katex-base,.katex .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;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .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{width:.12em;display:inline-block}.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 .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.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;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.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{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.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{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;background:#eef1f4;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}button,textarea,input{font:inherit}button{color:inherit}.auth-shell{background:radial-gradient(circle at 18% 12%,#315efb29,#0000 32%),radial-gradient(circle at 84% 88%,#19a9741f,#0000 30%),#f3f5f8;place-items:center;min-height:100%;padding:24px;display:grid}.auth-loading{color:#687386;align-content:center;gap:12px;font-size:14px;font-weight:650}.auth-loading>svg{color:#315efb;width:20px;height:20px}.auth-card{background:#fffffff5;border:1px solid #17203317;border-radius:22px;width:min(440px,100%);padding:34px;box-shadow:0 28px 80px #17203324}.auth-brand-mark{color:#fff;background:#172033;border-radius:14px;place-items:center;width:46px;height:46px;display:grid;box-shadow:0 8px 20px #17203333}.auth-brand-mark svg{width:21px;height:21px}.auth-heading{margin-top:22px}.auth-heading>span{color:#315efb;letter-spacing:.14em;font-size:11px;font-weight:850}.auth-heading h1{letter-spacing:-.035em;margin:7px 0 0;font-size:28px}.auth-heading p{color:#748092;margin:8px 0 0;font-size:14px;line-height:1.55}.auth-form{gap:15px;margin-top:25px;display:grid}.auth-form label,.dialog-field{gap:7px;display:grid}.auth-form label>span,.dialog-field>span{color:#596476;font-size:13px;font-weight:720}.auth-form input,.dialog-field input{color:#172033;background:#fff;border:1px solid #d7dde6;border-radius:10px;outline:0;width:100%;height:44px;padding:0 12px}.auth-form input:focus,.dialog-field input:focus{border-color:#315efb;box-shadow:0 0 0 3px #315efb24}.auth-error{color:#b7332a;margin:-3px 0 0;font-size:13px;line-height:1.45}.auth-submit{width:100%;margin-top:3px}.auth-switch{color:#7a8495;text-align:center;margin:20px 0 0;font-size:13px}.auth-switch button{color:#315efb;cursor:pointer;background:0 0;border:0;padding:0;font-weight:750}.whiteboard-shell{background:#eef1f4;position:fixed;inset:0;overflow:hidden}.button,.icon-button,.tool-button{cursor:pointer;border:0;justify-content:center;align-items:center;transition:color .15s,background-color .15s,border-color .15s,box-shadow .15s,transform .15s;display:inline-flex}.button:focus-visible,.icon-button:focus-visible,.tool-button:focus-visible{outline-offset:2px;outline:3px solid #315efb40}.button:disabled{cursor:not-allowed;opacity:.5}.button{border-radius:10px;gap:8px;min-height:40px;padding:0 14px;font-size:14px;font-weight:680}.button svg{width:16px;height:16px}.button.primary{color:#fff;background:#315efb;box-shadow:0 5px 14px #315efb40}.button.primary:hover{background:#244fe2}.button.secondary{background:#fff;border:1px solid #dce1e8}.button.secondary:hover{background:#f5f7f9}.button.danger{color:#d64035;background:0 0}.button.danger:hover{background:#fff0ef}.button.danger-filled{color:#fff;background:#df4136}.button.danger-filled:hover{background:#c9362d}.icon-button{background:0 0;border-radius:10px;width:36px;height:36px;padding:0}.icon-button:hover{background:#eef1f5}.icon-button svg{width:18px;height:18px}.topbar{z-index:40;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fffffff0;border-bottom:1px solid #17203317;grid-template-columns:1fr auto 1fr;align-items:center;height:68px;padding:0 18px;display:grid;position:absolute;inset:0 0 auto;box-shadow:0 1px #fffc}.brand-lockup,.topbar-actions,.board-title-row,.sync-status,.style-panel-heading,.style-label-row,.color-row,.zoom-controls,.collab-chip{align-items:center;display:flex}.brand-lockup{gap:11px;min-width:0}.brand-mark{color:#fff;background:#172033;border-radius:12px;place-items:center;width:38px;height:38px;display:grid;box-shadow:inset 0 0 0 1px #ffffff14,0 5px 14px #1720332e}.brand-mark svg{width:18px;height:18px}.board-picker{min-width:0;position:relative}.board-picker-trigger{text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;max-width:300px;padding:3px 5px;display:block}.board-picker-trigger:hover{background:#f2f4f7}.brand-copy{min-width:0;display:block}.board-title-row{gap:4px}.board-title-row strong{letter-spacing:-.02em;text-overflow:ellipsis;white-space:nowrap;max-width:220px;font-size:16px;font-weight:740;overflow:hidden}.board-title-row svg{color:#8a93a3;width:13px;height:13px}.board-subtitle{color:#7a8495;white-space:nowrap;margin-top:1px;font-size:12px;display:block}.board-menu{z-index:80;background:#fff;border:1px solid #dfe4eb;border-radius:14px;width:300px;max-height:min(440px,100vh - 90px);padding:8px;position:absolute;top:calc(100% + 10px);left:0;overflow-y:auto;box-shadow:0 18px 50px #1720332e}.board-menu-heading{color:#727d8e;justify-content:space-between;align-items:center;padding:5px 8px 8px;font-size:12px;font-weight:750;display:flex}.board-menu-heading small{text-align:center;background:#eef1f5;border-radius:10px;min-width:22px;padding:2px 6px}.board-menu-item{text-align:left;cursor:pointer;background:0 0;border:0;border-radius:10px;grid-template-columns:34px minmax(0,1fr) 28px;align-items:center;gap:9px;width:100%;padding:9px;display:grid}.board-menu-item:hover{background:#f4f6f8}.board-menu-item.active{background:#eef2ff}.board-menu-icon{color:#315efb;background:#edf1ff;border-radius:9px;place-items:center;width:34px;height:34px;display:grid}.board-menu-icon svg{width:16px;height:16px}.board-menu-item>span:nth-child(2){gap:2px;min-width:0;display:grid}.board-menu-item strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.board-menu-item small{color:#8a93a3;font-size:11px}.board-menu-item>svg{color:#315efb;justify-self:center;width:16px;height:16px}.board-delete-action{color:#9a6670;border-radius:8px;place-items:center;width:28px;height:28px;display:grid}.board-delete-action:hover{color:#c9362d;background:#ffebe9}.board-delete-action svg{width:15px;height:15px}.board-menu-create{color:#315efb;cursor:pointer;background:#fafbff;border:1px dashed #cbd3df;border-radius:10px;align-items:center;gap:8px;width:100%;height:38px;margin-top:5px;padding:0 10px;font-size:13px;font-weight:720;display:flex}.board-menu-create:hover{background:#f1f4ff;border-color:#96aaff}.board-menu-create svg{width:16px;height:16px}.sync-status{color:#8a93a3;justify-content:center;gap:7px;min-width:140px;font-size:13px;font-weight:650}.sync-status svg{width:15px;height:15px}.sync-status.connected svg{color:#19a974}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.topbar-actions{justify-content:flex-end;gap:10px}.avatar-stack{flex-direction:row-reverse;padding-left:8px;display:flex}.avatar{color:#fff;border:2px solid #fff;border-radius:50%;place-items:center;width:31px;height:31px;margin-left:-8px;font-size:11px;font-weight:800;display:grid;box-shadow:0 1px 5px #1720331f}.avatar-more{color:#5f6979;background:#eef1f4!important}.share-button{height:38px;box-shadow:0 1px 2px #1720330a}.voice-join-button{color:#315efb;height:38px;box-shadow:0 1px 2px #1720330a}.voice-controls{background:#f0fbf6;border:1px solid #b9e2d1;border-radius:10px;align-items:center;height:38px;display:flex;overflow:hidden}.voice-mic-button{color:#087b56;background:0 0;border-radius:0;min-height:36px;padding:0 10px}.voice-mic-button:hover{background:#e2f6ed}.voice-mic-button.muted{color:#aa4b43;background:#fff4f2}.voice-leave-button{color:#d64035;border-left:1px solid #cce5da;border-radius:0;width:35px;height:36px}.voice-leave-button:hover{color:#fff;background:#d64035}.more-button{color:#6e7787}.more-button:hover{color:#c9362e;background:#fff0ef}.user-button{cursor:pointer;background:#fff;border:1px solid #e0e4ea;border-radius:12px;align-items:center;gap:8px;height:42px;padding:3px 8px 3px 4px;display:flex}.user-button:hover{background:#f5f7f9}.user-button>span:first-child{color:#fff;border-radius:9px;place-items:center;width:32px;height:32px;font-size:11px;font-weight:800;display:grid}.user-button-copy{text-align:left;min-width:68px;display:grid}.user-button-copy strong{text-overflow:ellipsis;white-space:nowrap;max-width:100px;font-size:12px;overflow:hidden}.user-button-copy small{color:#8a93a3;font-size:10px}.user-button>svg{color:#8993a2;width:15px;height:15px}.board-viewport{touch-action:none;cursor:default;background-color:#f2f4f7;background-image:radial-gradient(circle,#4f5c713b 1px,#0000 1.15px);background-size:24px 24px;position:absolute;inset:68px 0 0;overflow:hidden}.board-viewport.tool-pen,.board-viewport.tool-math{cursor:crosshair}.board-viewport.tool-text{cursor:text}.board-viewport.tool-hand,.board-viewport.is-panning{cursor:grab}.board-viewport.tool-hand:active,.board-viewport.is-panning:active{cursor:grabbing}.board-viewport.tool-eraser{cursor:cell}.board-world{transform-origin:0 0;background:#ffffff7a;border:1px solid #17203314;position:absolute;top:0;left:0;box-shadow:0 20px 70px #202b3d14}.stroke-layer{width:100%;height:100%;position:absolute;inset:0;overflow:visible}.stroke-item{pointer-events:stroke;cursor:move}.board-text{white-space:pre-wrap;letter-spacing:-.025em;cursor:move;-webkit-user-select:none;user-select:none;border-radius:7px;min-width:40px;max-width:520px;padding:5px 7px;font-weight:620;line-height:1.3;position:absolute}.board-text.selected{outline-offset:4px;background:#315efb0a;outline:2px solid #315efb}.board-math{cursor:move;-webkit-user-select:none;user-select:none;background:#ffffffeb;border:1px solid #17203314;border-radius:10px;min-width:64px;padding:10px 13px;position:absolute;box-shadow:0 5px 16px #17203314}.board-math.selected{outline-offset:4px;background:#fff;outline:2px solid #315efb}.math-typeset{min-width:1px;display:inline-block}.math-typeset .katex{font-size:1em}.math-typeset .katex-display{margin:0}.board-image{cursor:move;-webkit-user-select:none;user-select:none;background:#fff;border-radius:13px;margin:0;position:absolute;overflow:visible;box-shadow:0 12px 34px #17203324,0 2px 5px #17203314}.board-image.selected{outline-offset:5px;outline:3px solid #315efb}.board-image img{border-radius:inherit;object-fit:cover;pointer-events:none;width:100%;height:100%;display:block}.board-image figcaption{color:#566173;background:#ffffffeb;border-radius:7px;padding:4px 8px;font-size:12px;font-weight:650;position:absolute;bottom:-29px;right:8px;box-shadow:0 3px 10px #17203314}.image-selection-ui{pointer-events:none;position:absolute;inset:0}.image-size-badge{color:#fff;background:#315efb;border-radius:7px;width:max-content;padding:6px 9px;font-size:12px;font-weight:750;line-height:1;position:absolute;top:-39px;left:50%;transform:translate(-50%);box-shadow:0 4px 12px #315efb40}.image-resize-handle{pointer-events:auto;touch-action:none;background:#fff;border:3px solid #315efb;border-radius:50%;width:16px;height:16px;padding:0;position:absolute;box-shadow:0 2px 7px #17203333}.image-resize-handle:focus-visible{outline-offset:3px;outline:3px solid #315efb47}.handle-nw{cursor:nwse-resize;top:0;left:0;transform:translate(-50%,-50%)}.handle-ne{cursor:nesw-resize;top:0;right:0;transform:translate(50%,-50%)}.handle-sw{cursor:nesw-resize;bottom:0;left:0;transform:translate(-50%,50%)}.handle-se{cursor:nwse-resize;bottom:0;right:0;transform:translate(50%,50%)}.text-editor{z-index:9999;resize:none;outline-offset:3px;color:#172033;background:#fffffff7;border:0;border-radius:7px;outline:2px solid #315efb;width:280px;min-height:58px;padding:6px 8px;font-size:28px;font-weight:620;line-height:1.3;position:absolute;overflow:hidden;box-shadow:0 8px 24px #315efb1f}.text-editor::placeholder{color:#aeb5c0}.remote-cursor{z-index:9998;pointer-events:none;position:absolute;transform:translate(-4px,-3px)}.remote-cursor svg{stroke:#fff;stroke-width:1.4px;filter:drop-shadow(0 1px 2px #00000040);width:23px;height:23px}.remote-cursor span{color:#fff;border-radius:5px;width:max-content;margin:-1px 0 0 15px;padding:4px 8px;font-size:12px;font-weight:700;display:block;box-shadow:0 2px 7px #17203326}.floating-toolbar{z-index:30;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffffff5;border:1px solid #1720331a;border-radius:15px;flex-direction:column;gap:3px;padding:7px;display:flex;position:absolute;top:calc(50% + 28px);left:16px;transform:translateY(-50%);box-shadow:0 12px 35px #1720331f,0 2px 5px #1720330f}.tool-button{color:#5f6979;background:0 0;border-radius:10px;width:38px;height:38px;padding:0}.tool-button svg{width:19px;height:19px}.tool-button:hover{color:#172033;background:#f0f3f6}.tool-button.active{color:#fff;background:#315efb;box-shadow:0 5px 12px #315efb47}.tool-button.toolbar-section{border-top:1px solid #e8ebef;border-radius:0 0 10px 10px;margin-top:5px}.style-panel{z-index:30;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffffff7;border:1px solid #1720331a;border-radius:16px;width:228px;padding:16px;position:absolute;top:88px;right:18px;box-shadow:0 14px 40px #1720331f}.style-panel-heading{justify-content:space-between;font-size:15px;font-weight:750}.style-panel-heading svg{color:#19a974;width:15px;height:15px}.style-block{margin-top:18px}.style-block>label,.style-label-row label{color:#687386;margin-bottom:9px;font-size:13px;font-weight:680;display:block}.style-label-row{justify-content:space-between}.style-label-row span{color:#8a93a3;margin-bottom:9px;font-size:12px}.image-resize-help{color:#7a8495;margin:12px 0 0;font-size:12px;line-height:1.55}.color-row{gap:9px}.color-swatch{cursor:pointer;border:3px solid #fff;border-radius:50%;outline:1px solid #dce1e8;width:26px;height:26px;padding:0}.color-swatch.active{outline-offset:2px;outline:2px solid #315efb}.style-panel input[type=range]{accent-color:#315efb;cursor:pointer;width:100%}.panel-button{justify-content:flex-start;width:100%;margin-top:16px}.panel-button+.panel-button{margin-top:8px}.zoom-controls{z-index:30;background:#fffffff5;border:1px solid #1720331a;border-radius:12px;gap:2px;height:42px;padding:4px;position:absolute;bottom:18px;left:18px;box-shadow:0 7px 22px #1720331a}.zoom-controls>button:not(.icon-button){color:#596476;cursor:pointer;background:0 0;border:0;width:52px;height:32px;font-size:13px;font-weight:700}.zoom-controls .icon-button{width:32px;height:32px}.zoom-controls button:disabled{opacity:.38;cursor:not-allowed}.zoom-divider{background:#e0e4e9;width:1px;height:20px;margin:0 2px}.zoom-controls>button.view-sync-toggle{border-radius:8px;justify-content:center;align-items:center;gap:6px;width:auto;min-width:92px;padding:0 9px;display:flex}.view-sync-toggle.active{color:#fff!important;background:#315efb!important}.view-sync-check{border:1.5px solid;border-radius:4px;place-items:center;width:15px;height:15px;display:grid}.view-sync-check svg{stroke-width:3px;width:11px;height:11px}.view-following-label{color:#315efb;white-space:nowrap;align-items:center;gap:5px;height:32px;padding:0 9px;font-size:12px;font-weight:700;display:flex}.view-following-label svg{width:14px;height:14px}.collab-chip{z-index:30;color:#5f6979;background:#fffffff5;border:1px solid #1720331a;border-radius:11px;gap:7px;height:40px;padding:0 13px;font-size:13px;font-weight:650;position:absolute;bottom:18px;right:18px;box-shadow:0 7px 22px #17203317}.collab-chip svg{width:16px;height:16px}.collab-chip i{background:#a2aab6;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 3px #7a84951f}.collab-chip.connected i{background:#19a974;box-shadow:0 0 0 3px #19a9741f}.empty-canvas{color:#7b8595;pointer-events:none;text-align:center;flex-direction:column;align-items:center;display:flex;position:absolute;top:49%;left:50%;transform:translate(-50%,-50%)}.empty-icon{color:#315efb;background:#ffffffe0;border:1px solid #dde2e9;border-radius:15px;place-items:center;width:50px;height:50px;margin-bottom:12px;display:grid;box-shadow:0 8px 22px #17203314}.empty-icon svg{width:21px;height:21px}.empty-canvas strong{color:#475366;font-size:15px}.empty-canvas span{margin-top:5px;font-size:13px}.dialog-backdrop{z-index:100;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#17203380;place-items:center;padding:14px;display:grid;position:fixed;inset:0}.math-dialog,.confirm-dialog{background:#fff;border:1px solid #dfe4eb;border-radius:18px;width:min(780px,100vw - 28px);max-height:min(90vh,820px);padding:22px;position:relative;overflow-y:auto;box-shadow:0 22px 70px #17203347}.dialog-header{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.dialog-header h2,.confirm-dialog h2{letter-spacing:-.02em;margin:0;font-size:20px}.dialog-header p,.confirm-dialog p{color:#6d7788;margin:7px 0 0;font-size:14px;line-height:1.55}.dialog-close{color:#707b8c;flex:none}.math-tabs{background:#f1f3f6;border-radius:10px;gap:4px;margin-top:18px;padding:3px;display:flex;overflow-x:auto}.math-tabs button{color:#687386;cursor:pointer;background:0 0;border:0;border-radius:8px;flex:1;min-width:max-content;height:34px;padding:0 12px;font-size:14px;font-weight:650}.math-tabs button.active{color:#172033;background:#fff;box-shadow:0 1px 4px #1720331a}.math-template-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:220px;margin-top:10px;padding:2px;display:grid;overflow-y:auto}.math-template-card{color:#172033;text-align:left;cursor:pointer;background:#fbfcfd;border:1px solid #e0e5ec;border-radius:11px;grid-template-columns:92px minmax(0,1fr);align-items:center;gap:8px;min-width:0;min-height:72px;padding:10px 12px;transition:border-color .15s,background-color .15s,box-shadow .15s;display:grid}.math-template-card:hover{background:#f5f7ff;border-color:#9eb2ff;box-shadow:0 4px 12px #315efb14}.math-template-card:focus-visible{outline-offset:2px;outline:3px solid #315efb3d}.math-template-card>span:first-child{color:#697386;font-size:13px;font-weight:700}.math-template-card .math-typeset{text-align:center;min-width:0;font-size:16px;overflow:hidden}.math-editor-mode{background:#eef1f5;border-radius:10px;gap:3px;width:max-content;margin-top:17px;padding:3px;display:flex}.math-editor-mode button{color:#748092;cursor:pointer;background:0 0;border:0;border-radius:8px;height:32px;padding:0 13px;font-size:13px;font-weight:700}.math-editor-mode button.active{color:#172033;background:#fff;box-shadow:0 1px 4px #1720331a}.visual-editor-panel{margin-top:12px}.visual-editor-label{color:#5f6979;margin:0 0 8px;font-size:13px;font-weight:750;display:block}.math-part-toolbar{gap:6px;margin-bottom:13px;padding:2px 2px 7px;display:flex;overflow-x:auto}.math-part-toolbar button{color:#253149;cursor:pointer;background:#fbfcfd;border:1px solid #dfe4eb;border-radius:9px;flex:none;place-items:center;min-width:46px;height:38px;padding:0 10px;display:grid}.math-part-toolbar button:hover{color:#315efb;background:#f2f5ff;border-color:#9eb2ff}.math-part-toolbar button:focus-visible{outline-offset:1px;outline:3px solid #315efb33}.math-part-toolbar .math-typeset{pointer-events:none;font-size:16px}.visual-math-field-host{background:#fbfcfd;border:1px solid #d9dfe8;border-radius:12px;align-items:center;min-height:116px;padding:14px 16px;transition:border-color .15s,box-shadow .15s;display:flex}.visual-math-field-host:focus-within{background:#fff;border-color:#315efb;box-shadow:0 0 0 3px #315efb24}.visual-math-field{background:0 0;border:0;outline:0;align-items:center;width:100%;min-height:72px;font-size:30px;display:flex}.visual-editor-help{color:#8a93a3;margin:8px 0 0;font-size:12px;line-height:1.5}.math-editor-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;margin-top:18px;display:grid}.math-editor-grid.source-editor-panel{margin-top:12px}.math-input-block,.math-preview-block{min-width:0}.math-input-block>label,.math-preview-block>span{color:#5f6979;margin-bottom:8px;font-size:13px;font-weight:750;display:block}.math-input-block textarea{resize:vertical;color:#172033;background:#fff;border:1px solid #d9dfe8;border-radius:10px;outline:0;width:100%;min-height:132px;padding:10px 11px;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:14px;line-height:1.55}.math-input-block textarea:focus{border-color:#315efb;box-shadow:0 0 0 3px #315efb29}.math-input-block>span{color:#8a93a3;margin-top:7px;font-size:12px;line-height:1.5;display:block}.math-preview{background-color:#fbfcfd;background-image:radial-gradient(circle,#4f5c712b 1px,#0000 1.05px);background-size:16px 16px;border:1px solid #e0e5ec;border-radius:11px;place-items:center;min-height:132px;padding:18px;font-size:30px;display:grid;overflow:auto}.math-preview em{color:#9aa3b1;font-size:13px;font-style:normal}.dialog-footer{justify-content:flex-end;gap:9px;margin-top:20px;display:flex}.confirm-dialog{width:min(430px,100vw - 28px)}.confirm-dialog .dialog-close{position:absolute;top:14px;right:14px}.confirm-dialog h2{padding-right:40px}.board-form-dialog{width:min(480px,100vw - 28px)}.dialog-field{margin-top:20px}.share-dialog-icon{color:#315efb;background:#edf1ff;border-radius:12px;place-items:center;width:42px;height:42px;margin-bottom:15px;display:grid}.share-dialog-icon svg{width:19px;height:19px}.dialog-error{color:#b7332a!important;margin:10px 0 -7px!important;font-size:13px!important}.toast-stack{z-index:140;pointer-events:none;gap:8px;display:grid;position:fixed;top:82px;left:50%;transform:translate(-50%)}.toast{color:#172033;text-align:center;background:#fffffffa;border:1px solid #dfe4eb;border-radius:11px;min-width:220px;max-width:min(430px,100vw - 28px);padding:11px 14px;font-size:14px;font-weight:650;box-shadow:0 12px 28px #17203329}.toast.success{color:#0f7957;border-color:#bce6d4}.toast.error{color:#b22f27;border-color:#f1c2be}@media (width<=720px){.topbar{grid-template-columns:1fr auto;height:62px;padding:0 12px}.board-viewport{inset:62px 0 0}.brand-mark{border-radius:11px;width:35px;height:35px}.board-subtitle,.sync-status,.avatar-stack,.more-button,.share-button span,.voice-button-text,.user-button-copy,.user-button>svg{display:none}.board-title-row strong{max-width:128px}.board-menu{width:min(300px,100vw - 24px)}.user-button{border:0;width:38px;padding:3px}.share-button,.voice-join-button,.voice-mic-button{width:38px;padding:0}.topbar-actions{grid-column:2}.floating-toolbar{flex-direction:row;max-width:calc(100vw - 24px);top:auto;bottom:16px;left:50%;overflow-x:auto;transform:translate(-50%)}.tool-button{flex:0 0 36px;width:36px;height:36px}.tool-button.toolbar-section{border-top:0;border-left:1px solid #e8ebef;border-radius:0 10px 10px 0;margin-top:0;margin-left:5px}.zoom-controls{bottom:74px;left:12px}.collab-chip{bottom:74px;right:12px}.style-panel{width:min(228px,100vw - 24px);top:76px;right:12px}.image-resize-handle{border-width:4px;width:22px;height:22px}.math-dialog{max-height:calc(100vh - 20px);padding:18px}.math-template-grid,.math-editor-grid{grid-template-columns:1fr}.math-template-grid{max-height:188px}.math-template-card{grid-template-columns:88px minmax(0,1fr);min-height:64px}.math-preview{min-height:108px}.dialog-footer{flex-direction:column-reverse}.dialog-footer .button{width:100%}.auth-card{padding:26px 22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}