@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_AMS-Regular.BQhdFMY1.woff2)format("woff2"),url(/_astro/KaTeX_AMS-Regular.DMm9YOAa.woff)format("woff"),url(/_astro/KaTeX_AMS-Regular.DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Caligraphic-Bold.Dq_IR9rO.woff2)format("woff2"),url(/_astro/KaTeX_Caligraphic-Bold.BEiXGLvX.woff)format("woff"),url(/_astro/KaTeX_Caligraphic-Bold.ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Caligraphic-Regular.Di6jR-x-.woff2)format("woff2"),url(/_astro/KaTeX_Caligraphic-Regular.CTRA-rTL.woff)format("woff"),url(/_astro/KaTeX_Caligraphic-Regular.wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Fraktur-Bold.CL6g_b3V.woff2)format("woff2"),url(/_astro/KaTeX_Fraktur-Bold.BsDP51OF.woff)format("woff"),url(/_astro/KaTeX_Fraktur-Bold.BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Fraktur-Regular.CTYiF6lA.woff2)format("woff2"),url(/_astro/KaTeX_Fraktur-Regular.Dxdc4cR9.woff)format("woff"),url(/_astro/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(/_astro/KaTeX_Main-Bold.Cx986IdX.woff2)format("woff2"),url(/_astro/KaTeX_Main-Bold.Jm3AIy58.woff)format("woff"),url(/_astro/KaTeX_Main-Bold.waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Main-BoldItalic.DxDJ3AOS.woff2)format("woff2"),url(/_astro/KaTeX_Main-BoldItalic.SpSLRI95.woff)format("woff"),url(/_astro/KaTeX_Main-BoldItalic.DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Main-Italic.NWA7e6Wa.woff2)format("woff2"),url(/_astro/KaTeX_Main-Italic.BMLOBm91.woff)format("woff"),url(/_astro/KaTeX_Main-Italic.3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Main-Regular.B22Nviop.woff2)format("woff2"),url(/_astro/KaTeX_Main-Regular.Dr94JaBh.woff)format("woff"),url(/_astro/KaTeX_Main-Regular.ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Math-BoldItalic.CZnvNsCZ.woff2)format("woff2"),url(/_astro/KaTeX_Math-BoldItalic.iY-2wyZ7.woff)format("woff"),url(/_astro/KaTeX_Math-BoldItalic.B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Math-Italic.t53AETM-.woff2)format("woff2"),url(/_astro/KaTeX_Math-Italic.DA0__PXp.woff)format("woff"),url(/_astro/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(/_astro/KaTeX_SansSerif-Bold.D1sUS0GD.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Bold.DbIhKOiC.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Bold.CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Italic.C3H0VqGB.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Italic.DN2j7dab.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Italic.YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Regular.DDBCnlJ7.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Regular.CS6fqUqJ.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Regular.BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Script-Regular.D3wIWfF6.woff2)format("woff2"),url(/_astro/KaTeX_Script-Regular.D5yQViql.woff)format("woff"),url(/_astro/KaTeX_Script-Regular.C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size1-Regular.mCD8mA8B.woff2)format("woff2"),url(/_astro/KaTeX_Size1-Regular.C195tn64.woff)format("woff"),url(/_astro/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(/_astro/KaTeX_Size2-Regular.Dy4dx90m.woff2)format("woff2"),url(/_astro/KaTeX_Size2-Regular.oD1tc_U0.woff)format("woff"),url(/_astro/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(/_astro/KaTeX_Size3-Regular.CTq5MqoE.woff)format("woff"),url(/_astro/KaTeX_Size3-Regular.DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size4-Regular.Dl5lxZxV.woff2)format("woff2"),url(/_astro/KaTeX_Size4-Regular.BF-4gkZK.woff)format("woff"),url(/_astro/KaTeX_Size4-Regular.DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Typewriter-Regular.CO6r4hn1.woff2)format("woff2"),url(/_astro/KaTeX_Typewriter-Regular.C0xS9mPB.woff)format("woff"),url(/_astro/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:"0.18.2"}.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 .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}.function-chapter{--fw-ink:#213f34;--fw-accent:#995334;--fw-paper:#faf8f1;--fw-line:#c9d2c7;color:var(--fw-ink);padding-bottom:3rem}.function-chapter [hidden]{display:none!important}.fw-heading{border-bottom:1px solid var(--fw-line);padding-top:2.5rem;padding-bottom:1.4rem}.fw-back{font-size:.92rem}.fw-eyebrow{text-transform:uppercase;letter-spacing:.13em;color:var(--fw-accent);margin-top:1.4rem;font-size:.75rem;font-weight:700}.fw-heading h1{letter-spacing:-.03em;max-width:24ch;margin:.55rem 0 1rem;font-family:Georgia,Noto Serif TC,PMingLiU,serif;font-size:clamp(2rem,4vw,3.8rem);line-height:1.22}.fw-lead{max-width:70ch;font-size:1.14rem;line-height:1.8}.fw-toolbar,.fw-step-footer,.fw-related{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.fw-toolbar{margin-top:1.4rem}.function-chapter button,.fw-toolbar a{font:inherit;color:var(--fw-ink);border:1px solid var(--fw-line);background:var(--fw-paper);cursor:pointer;border-radius:3px;min-height:44px;padding:.65rem 1rem;text-decoration:none}.function-chapter button:hover,.fw-toolbar a:hover{border-color:var(--fw-ink);background:#edf2e9}.function-chapter button:disabled{opacity:.4;cursor:default}.function-chapter .fw-primary{background:var(--fw-ink);color:#fff;border-color:var(--fw-ink)}.function-chapter .fw-primary:hover{background:#345d4b}.function-chapter :focus-visible{outline:3px solid var(--fw-accent);outline-offset:4px}.fw-invitation{grid-template-columns:1fr 200px;gap:3rem;padding:2.6rem 0 1.4rem;display:grid}.fw-invitation h2{max-width:23ch;font-family:Georgia,Noto Serif TC,PMingLiU,serif;font-size:clamp(1.6rem,2.7vw,2.5rem);line-height:1.45}.fw-invitation p{max-width:64ch;line-height:1.85}.fw-chapter-mark{border:1px solid var(--fw-line);background:repeating-linear-gradient(0deg,#0000,#0000 29px,#d9e0d4 30px),repeating-linear-gradient(90deg,#0000,#0000 29px,#d9e0d4 30px);flex-direction:column;justify-content:center;align-self:center;align-items:center;height:190px;display:flex;transform:rotate(-3deg)}.fw-chapter-mark span{color:var(--fw-accent);font:italic 110px/1 Georgia,serif}.fw-chapter-mark small{letter-spacing:.25em;font:italic 22px Georgia,serif}.fw-course-group{margin:2.8rem 0}.fw-course-group>h2{border-bottom:2px solid var(--fw-ink);padding-bottom:.65rem;font-size:1.3rem}.fw-course-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 1.7rem;display:grid}.fw-course-card{border-bottom:1px solid var(--fw-line);flex-direction:column;padding:1.5rem 0;display:flex}.fw-course-card h3{margin:0;font-size:1.18rem;line-height:1.55}.fw-course-card h3 a{text-decoration:none}.fw-course-card p{margin:.7rem 0 1rem;font-size:.95rem;line-height:1.75}.fw-card-link{justify-content:space-between;margin-top:auto;font-size:.9rem;display:flex}.fw-chapter-notes{border-left:4px solid var(--fw-accent);max-width:85ch;margin:3rem 0;padding:.4rem 1.5rem}.fw-chapter-notes p{line-height:1.8}.fw-stages{grid-template-columns:repeat(4,1fr);gap:.6rem;margin:1.5rem 0;display:grid}.fw-stages button{text-align:left;background:0 0;align-items:center;gap:.6rem;display:flex}.fw-stages button span{color:var(--fw-accent);font:italic 1.4rem Georgia,serif}.fw-stages [aria-current=step]{border-color:var(--fw-ink);background:#e7eee2;font-weight:700}.fw-question{max-width:85ch;padding:1rem 0 1.2rem}.fw-question h2{margin:.3rem 0;font-size:clamp(1.5rem,2.8vw,2.2rem);line-height:1.6}.fw-stage-content{margin:1rem 0 2rem}.fw-stage-content h3{font-size:1.24rem}.fw-prediction{max-width:65ch;font-size:1.3rem;line-height:1.9}.fw-paper-prompt{background:#edf1e6;border-left:3px solid #6d865e;margin:1.5rem 0;padding:1rem 1.3rem;line-height:1.85}.fw-paper-prompt p{margin:.5rem 0}.fw-paper-prompt li+li{margin-top:.5rem}.fw-model{border:1px solid var(--fw-line);background:#fffdf8;padding:1.4rem}.fw-section-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;display:flex}.fw-section-head h3{margin:.25rem 0 .8rem}.fw-section-head span{color:#596e60;font-size:.84rem}.fw-model-layout{grid-template-columns:minmax(0,1fr) 230px;align-items:start;gap:1rem;display:grid}.fw-diagram{background:var(--fw-paper);border:1px solid #e4e6da;min-width:0}.fw-diagram svg{width:100%;height:auto;font-family:Georgia,Noto Serif TC,PMingLiU,serif;display:block}.fw-controls{gap:1.2rem;padding:.5rem;display:grid}.fw-controls label{gap:.45rem;font-size:.95rem;display:grid}.fw-controls select,.fw-controls input[type=number]{width:100%;min-width:0;max-width:100%;font:inherit;color:var(--fw-ink);background:#fff;border:1px solid #a9b8a6;padding:.55rem}.fw-controls input[type=range]{width:100%;accent-color:var(--fw-ink)}.fw-controls output{font-variant-numeric:tabular-nums;color:var(--fw-accent);font-size:1.2rem;font-weight:700}.fw-result{overflow-wrap:anywhere;background:#e8eee1;min-height:4rem;padding:1rem 1.2rem;font-size:1.08rem;line-height:1.8}.fw-input-error{color:#8f331f;font-size:.9rem}.fw-input-error:empty{display:none}.fw-table-wrap{margin:1rem 0;overflow-x:auto}.fw-table{border-collapse:collapse;font-variant-numeric:tabular-nums;text-align:left;width:100%}.fw-table caption{text-align:left;margin-bottom:.4rem;font-size:.9rem}.fw-table th,.fw-table td{border-bottom:1px solid #d5ddcd;padding:.65rem .8rem}.fw-table th{background:#eef1e8}.fw-small{color:#59695b;font-size:.85rem;line-height:1.75}.fw-observations{padding-left:1.5rem;font-size:.95rem;line-height:1.8}.fw-observations li{border-bottom:1px solid var(--fw-line);padding:.5rem}.fw-hints{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.fw-hints details,.fw-reasoning,.fw-examples article,.fw-exit{border:1px solid var(--fw-line);background:var(--fw-paper);margin:1rem 0;padding:1rem 1.3rem}.function-chapter summary{cursor:pointer;min-height:32px;font-weight:700}.function-chapter details p,.function-chapter details li{line-height:1.85}.fw-reasoning{border-left:4px solid var(--fw-accent)}.fw-examples h4,.fw-exit h4{font-size:1.16rem;line-height:1.85}.fw-examples .math-expression{padding:.5rem;font-size:1.1rem;overflow-x:auto}.fw-step-footer{border-top:1px solid var(--fw-line);justify-content:space-between;padding:1rem 0}.fw-step-footer p{font-size:.9rem}.fw-teacher{border-top:1px solid var(--fw-line);border-bottom:1px solid var(--fw-line);margin:1.5rem 0;padding:1rem 0}.fw-teacher>p:first-of-type{color:#63715f;font-size:.85rem}.fw-teacher section h3{font-size:1rem}.fw-related{margin:1.5rem 0;font-size:.9rem}.fw-related a{border-bottom:1px solid var(--fw-line);padding:.25rem .6rem}.fw-lesson-navigation{justify-content:space-between;gap:2rem;margin:2rem 0;font-size:.95rem;display:flex}.fw-lesson-navigation a{max-width:46%;line-height:1.7}.fw-print{display:none}.fw-projecting .fw-heading h1{font-size:clamp(2.6rem,5vw,4.8rem)}.fw-projecting .fw-question h2{font-size:clamp(2rem,3vw,3rem)}.fw-projecting .fw-prediction,.fw-projecting .fw-result{font-size:1.45rem}.fw-projecting .fw-model-layout{grid-template-columns:minmax(0,1fr) 250px}.fw-projecting .fw-controls{font-size:1.15rem}.fw-projecting .fw-table td,.fw-projecting .fw-table th{font-size:1.12rem}:root[data-fw-projection] .site-header,:root[data-fw-projection] .site-footer{display:none}@media (width<=850px){.fw-model-layout,.fw-projecting .fw-model-layout{grid-template-columns:1fr}.fw-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.fw-controls .fw-input-error{grid-column:1/-1}.fw-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.fw-invitation{grid-template-columns:1fr 140px;gap:1rem}.fw-chapter-mark{height:150px}.fw-stages button{padding:.6rem;font-size:.9rem}}@media (width<=520px){.fw-heading{padding-top:1.4rem}.fw-course-grid,.fw-hints,.fw-invitation{grid-template-columns:1fr}.fw-chapter-mark{display:none}.fw-stages{grid-template-columns:repeat(2,1fr)}.fw-model{padding:.65rem}.fw-controls{grid-template-columns:1fr}.fw-prediction{font-size:1.15rem}.fw-table th,.fw-table td{padding:.5rem;font-size:.9rem}.fw-step-footer{gap:.4rem}.fw-step-footer button{padding:.5rem}.fw-step-footer p{font-size:.75rem}.fw-toolbar{gap:.4rem}.fw-toolbar a,.fw-toolbar button{font-size:.85rem}.fw-lesson-navigation{gap:1rem}}@media (prefers-reduced-motion:reduce){.function-chapter{scroll-behavior:auto}}@media print{@page{size:A4;margin:15mm}.site-header,.site-footer,.skip-link,[data-function-worksheet] .fw-screen{display:none!important}.function-chapter{color:#111;padding:0;font-size:10.5pt}.function-chapter .fw-print{max-width:none}.function-chapter .fw-print .fw-print-title{font-size:20pt;line-height:1.4}.function-chapter .fw-print h2{font-size:14pt}.function-chapter .fw-print h3{margin-top:1.2rem;font-size:12pt}.function-chapter .fw-print p,.function-chapter .fw-print li{line-height:1.7}.function-chapter .fw-print article{break-inside:avoid}.function-chapter .fw-print .math-expression{overflow:visible}.fw-writing-lines{background:repeating-linear-gradient(#0000 0 7mm,#b9b9b9 7mm 7.1mm);height:22mm}:root:not([data-function-worksheet-print]) [data-fw-print-student],:root[data-function-worksheet-print=student] [data-fw-print-student],:root[data-function-worksheet-print=teacher] [data-fw-print-teacher]{display:block!important}}.fw-diagram text{font-family:Georgia,Noto Serif TC,PMingLiU,serif}.fw-projecting .container{width:calc(100% - 2rem);max-width:1600px}:root[data-fw-projection] .breadcrumbs{display:none}@media print{.breadcrumbs{display:none!important}.fw-print h2,.fw-print h3{break-after:avoid;page-break-after:avoid}}.fw-direct{max-width:1560px}.fw-lesson-heading{padding-top:1.1rem;padding-bottom:.8rem}.fw-lesson-heading .fw-eyebrow,.fw-lesson-heading .fw-lead{display:none}.fw-lesson-heading h1{max-width:none;margin:.4rem 0;font-size:clamp(1.45rem,2.2vw,2.1rem)}.fw-lesson-heading .fw-toolbar{margin-top:.6rem}.fw-lesson-heading .fw-toolbar button,.fw-lesson-heading .fw-toolbar a{min-height:42px;padding:.45rem .7rem;font-size:.84rem}.fw-direct .fw-stages{gap:.5rem;margin:.8rem 0}.fw-direct .fw-stages button{min-height:44px;padding:.45rem .7rem}.fw-workspace{grid-template-columns:minmax(0,1fr) 300px;align-items:start;gap:1rem;display:grid}.fw-direct .fw-model{background:#fffdf7;flex-direction:column;min-width:0;padding:1rem;display:flex;box-shadow:0 3px #e4e9dc}.fw-direct .fw-section-head{order:0}.fw-direct .fw-section-head h2{font:600 1.12rem/1.4 var(--serif);margin:.1rem 0 .65rem}.fw-direct .fw-section-head span{letter-spacing:.03em;font-size:.75rem}.fw-interactive-board{isolation:isolate;background:repeating-linear-gradient(0deg,#0000,#0000 31px,#e9edde 32px),#faf8f1;border:1px solid #cdd8c6;order:3}.fw-interactive-board>svg{width:100%;height:auto;max-height:610px;font-family:var(--sans);user-select:none;display:block;overflow:visible}.fw-interactive-board [data-fw-drawing],.fw-interactive-board [data-fw-gesture]{pointer-events:none}.fw-interactive-board [data-fw-handle]{cursor:grab;touch-action:none;outline:none}.fw-interactive-board [data-fw-handle]:active{cursor:grabbing}.fw-hit{fill:#0000;stroke:none;pointer-events:all}.fw-handle-card{fill:#fff8e8;stroke:#995334;stroke-width:2.5px;filter:drop-shadow(0 3px #d9d5bf)}.fw-handle-dot{fill:#fff9e6;stroke:#995334;stroke-width:4px}.fw-handle-text{font:700 18px var(--sans);fill:#213f34;pointer-events:none}.fw-interactive-board [data-selected] .fw-handle-card,.fw-interactive-board [data-selected] .fw-handle-dot{stroke:#a55825;fill:#f9e5b8;stroke-width:5px}.fw-interactive-board [data-fw-handle]:focus-visible .fw-hit{stroke:#995334;stroke-width:4px;stroke-dasharray:7 4}.fw-interactive-board [data-fw-zone]{cursor:crosshair;touch-action:manipulation;outline:none}.fw-interactive-board [data-fw-zone]>rect{fill:#0000;stroke:#0000;stroke-width:3px;pointer-events:all}.fw-interactive-board [data-fw-zone]:focus-visible>rect,.fw-interactive-board [data-fw-zone][data-hover]>rect{stroke:#995334;fill:#f8eac033;stroke-dasharray:7 4}.fw-touch-guide{color:#596e60;order:4;margin:.4rem 0;font-size:.78rem;line-height:1.5}.fw-live-bar{border-top:1px solid var(--fw-line);flex-wrap:wrap;order:5;align-items:center;gap:.5rem;padding-top:.6rem;display:flex}.fw-live-bar p{overflow-wrap:anywhere;flex:320px;min-width:0;margin:.2rem 0;font-size:.94rem;line-height:1.6}.fw-live-bar button{padding:.4rem .6rem;font-size:.8rem}.fw-action-tools{flex-wrap:wrap;order:6;gap:.4rem;margin:.6rem 0;display:flex}.fw-action-tools button{padding:.4rem .65rem;font-size:.8rem}.fw-claim-field{border:0;order:2;margin:0;padding:.4rem 0 .55rem}.fw-claim-field legend{color:#596e60;font-size:.78rem;font-weight:700}.fw-claim-field [data-fw-claims]{flex-wrap:wrap;gap:.4rem;display:flex}.fw-claim-field [data-fw-claims] button{min-height:38px;padding:.4rem .7rem;font-size:.84rem}.fw-claim-field [aria-pressed=true]{background:#f3e5ca;border-color:#995334}.fw-claim-field>.fw-small{margin:.3rem 0 0;font-size:.75rem}.fw-check-row{flex-wrap:wrap;order:1;align-items:center;gap:.5rem;padding:0 0 .7rem;display:flex}.fw-check-row button{padding:.5rem .8rem;font-size:.9rem}.fw-check-row p{color:#596e60;flex:170px;margin:0;font-size:.75rem;line-height:1.45}.fw-diagnosis{background:#f2eddf;border-left:4px solid #995334;order:7;margin:.5rem 0;padding:.75rem 1rem}.fw-diagnosis h3{margin:.1rem 0;font-size:1rem}.fw-diagnosis ul{margin:.3rem 0;padding-left:1.2rem;font-size:.92rem;line-height:1.7}.fw-diagnosis[data-status=success]{border-color:#27866c}.fw-diagnosis[data-status=revise]{border-color:#b66b24}.fw-direct .fw-input-error{order:8}.fw-readings,.fw-access-tools,.fw-works{border-top:1px solid var(--fw-line);order:9;padding:.7rem 0;font-size:.86rem}.fw-access-tools label,.fw-teacher-presets label{gap:.3rem;margin:.7rem 0;display:grid}.fw-access-tools select,.fw-teacher-presets select{width:100%;font:inherit;color:var(--fw-ink);border:1px solid var(--fw-line);background:#fff;padding:.5rem}.fw-nudges{gap:.4rem;display:flex}.fw-nudges button{min-width:52px;font-size:1.1rem}.fw-works .fw-observations{gap:1rem;padding-left:1.3rem;display:grid}.fw-works .fw-observations>li{border:1px solid var(--fw-line);padding:.6rem}.fw-works svg{pointer-events:none;width:100%;height:auto}.fw-sidebar{border:1px solid var(--fw-line);background:#f1f2e7;min-width:0;padding:1rem}.fw-task-card{border-bottom:2px solid #79916d;padding:0 0 .7rem}.fw-task-card .fw-eyebrow{margin:0 0 .4rem}.fw-task-card h2{font:600 1.25rem/1.6 var(--serif);margin:.3rem 0}.fw-task-card p:last-child{margin:.5rem 0;font-size:.95rem;line-height:1.8}.fw-sidebar .fw-stage-content{margin:1rem 0}.fw-sidebar .fw-stage-content h3{font-size:1rem}.fw-sidebar .fw-stage-content p,.fw-sidebar .fw-stage-content li{font-size:.88rem;line-height:1.8}.fw-sidebar ol,.fw-sidebar ul{padding-left:1.2rem}.fw-sidebar .fw-hints{display:block}.fw-sidebar .fw-examples article,.fw-sidebar .fw-reasoning,.fw-sidebar .fw-hints details,.fw-sidebar .fw-exit{margin:.65rem 0;padding:.65rem}.fw-sidebar .fw-examples h4,.fw-sidebar .fw-exit h4{font-size:.95rem}.fw-sidebar .fw-examples .math-expression{font-size:.85rem}.fw-sidebar .fw-step-footer{gap:.2rem;padding:.65rem 0}.fw-sidebar .fw-step-footer button{min-height:40px;padding:.35rem;font-size:.76rem}.fw-sidebar .fw-step-footer p{font-size:.7rem}.fw-sidebar .fw-teacher{margin:.7rem 0;padding:.65rem 0}.fw-sidebar .fw-teacher-presets{border-top:1px solid var(--fw-line);padding:.6rem 0}.fw-sidebar summary{font-size:.87rem}.fw-direct~.fw-related{margin-top:1rem}:root[data-fw-projection] .fw-lesson-heading{border:0;padding:.4rem 0}:root[data-fw-projection] .fw-lesson-heading .fw-back{display:none}:root[data-fw-projection] .fw-lesson-heading h1{margin:.25rem 0;font-size:1.35rem}:root[data-fw-projection] .fw-lesson-heading .fw-toolbar{margin:.35rem 0}:root[data-fw-projection] .fw-direct .fw-stages{margin:.35rem 0 .65rem}:root[data-fw-projection] .fw-interactive-board>svg{height:calc(100dvh - 360px);min-height:300px;max-height:650px}:root[data-fw-projection] .fw-claim-field>.fw-small{display:none}:root[data-fw-projection] .fw-direct .fw-model{padding:.7rem}:root[data-fw-projection] .fw-live-bar p{font-size:1.05rem}@media (width>=1600px){.fw-workspace{grid-template-columns:minmax(0,1fr) 350px}.fw-sidebar .fw-stage-content p,.fw-sidebar .fw-stage-content li{font-size:.95rem}}@media (width<=1050px){.fw-workspace{grid-template-columns:1fr}.fw-sidebar{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.fw-sidebar .fw-task-card,.fw-sidebar .fw-step-footer,.fw-sidebar .fw-teacher,.fw-sidebar .fw-teacher-presets{grid-column:1/-1}.fw-interactive-board>svg{max-height:none}:root[data-fw-projection] .fw-interactive-board>svg{height:auto;min-height:0;max-height:none}}@media (width<=600px){.fw-direct.container{width:calc(100% - 1rem)}.fw-direct .fw-model{padding:.5rem}.fw-sidebar{padding:.8rem;display:block}.fw-direct .fw-section-head h2{font-size:1rem}.fw-check-row p{flex-basis:100%}.fw-claim-field [data-fw-claims] button{font-size:.8rem}.fw-live-bar p{font-size:.86rem}.fw-action-tools button{font-size:.76rem}.fw-lesson-heading h1{font-size:1.35rem}.fw-lesson-heading .fw-toolbar{gap:.3rem}.fw-lesson-heading .fw-toolbar a,.fw-lesson-heading .fw-toolbar button{font-size:.75rem}.fw-direct .fw-stages button{font-size:.8rem}.fw-handle-text{font-size:19px}}@media (prefers-reduced-motion:no-preference){.fw-handle-card,.fw-handle-dot{transition:fill .12s,stroke .12s}.fw-diagnosis{animation:.2s ease-out fw-reveal}@keyframes fw-reveal{0%{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}}@media print{[data-fw-print-work] article{break-inside:avoid;margin:.5rem 0 1rem}[data-fw-print-work] svg{border:1px solid #ccc;width:100%;height:auto;max-height:110mm}[data-fw-print-work] p{font-size:9pt}[data-fw-print-work] .fw-hit,[data-fw-print-work] [data-fw-zones],[data-fw-print-work] [data-fw-gesture]{display:none}[data-fw-print-work] .fw-handle-card{filter:none}}.fw-tool-buttons{flex-wrap:wrap;gap:.35rem;margin:.5rem 0;display:flex}.fw-tool-buttons button{padding:.45rem .65rem;font-size:.8rem}.fw-tool-buttons [aria-pressed=true]{background:#f3e5ca;border-color:#995334}[data-fw-svg]{touch-action:none}[data-fw-svg][data-fw-paintable]{touch-action:pan-y}@media (width>=1051px){:root[data-fw-projection] .fw-sidebar{scrollbar-gutter:stable;max-height:calc(100dvh - 180px);overflow:auto}.fw-works .fw-observations{grid-template-columns:repeat(2,minmax(0,1fr))}}
