@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,math,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.19.0"}.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}.ad{flex-direction:column;min-height:100vh;margin:-48px -56px -64px;display:flex}.ad-head{border-bottom:1px solid var(--rule);align-items:center;gap:16px;min-height:64px;padding:10px 32px;display:flex}.ad-eb{color:var(--accent)}.ad-links{color:var(--muted);align-items:center;gap:10px;margin-left:auto;font-size:14px;display:flex}.ad-links a{align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--muted)!important}.ad-links a:hover,.ad-links a.on{color:var(--text)!important}.ad-empty{flex-direction:column;align-items:flex-start;gap:10px;padding:20px;display:flex}.ad-empty .skel{width:100%}.ad .good{color:var(--good)}.ad .bad{color:var(--bad)}.ad-split{flex:1;min-height:0;display:flex}.ad-queue{border-right:1px solid var(--line);flex:0 0 360px}.ad-queue-head{border-bottom:1px solid var(--rule);min-height:52px;color:var(--muted);justify-content:space-between;align-items:center;padding:0 20px;font-size:14px;display:flex}.ad-toggle{min-height:44px;font-size:14px}.ad-items{margin:0;padding:0;list-style:none}.ad-item{text-align:left;cursor:pointer;border:0;border-left:3px solid #0000;border-bottom:1px solid var(--line);width:100%;color:var(--text);font:inherit;background:0 0;flex-direction:column;gap:4px;padding:14px 20px 14px 17px;display:flex}.ad-item:hover{background:var(--well)}.ad-item.on{background:var(--surface);border-left-color:var(--accent)}.ad-item-title{font:18px/1.3 var(--serif);-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.ad-item-meta{color:var(--muted);font-size:13px}.ad-detail{flex-direction:column;flex:1;min-width:0;padding:32px 40px;display:flex}.ad-placeholder{flex-direction:column;gap:10px;max-width:520px;margin-top:8px;display:flex}.ad-placeholder-title{font:26px/1.2 var(--serif)}.ad-dispute{flex-direction:column;flex:1;gap:16px;display:flex}.ad-back{display:none}.ad-prompt{font:22px/1.45 var(--serif);flex-direction:column;gap:8px;display:flex}.ad-answer{flex-wrap:wrap;align-items:baseline;gap:6px;font-size:15px;display:flex}.ad-answer .tex{font-size:19px}.ad-boxes{grid-template-columns:1fr 1fr;gap:20px;display:grid}.ad-box{background:var(--surface);border:1px solid var(--line);flex-direction:column;gap:6px;min-width:0;padding:16px;display:flex}.ad-text{font:17px/1.55 var(--serif);overflow-wrap:anywhere;flex-direction:column;gap:4px;display:flex}.ad-note{border-left:3px solid var(--accent);flex-direction:column;gap:2px;padding-left:12px;display:flex}.ad-note p{font:17px/1.5 var(--serif)}.ad-rubric{border:1px dashed var(--rule);flex-direction:column;gap:8px;padding:14px 16px;display:flex}.ad-rubric code{overflow-wrap:anywhere;-webkit-user-select:all;user-select:all;font-size:14px}.ad-rubric-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.ad-rubric summary,.ad-ex summary{cursor:pointer;min-height:44px;color:var(--muted);align-items:center;font-size:14px;display:flex}.ad-rubric ul{font:16px/1.5 var(--serif);margin:0;padding-left:20px}.ad-resolve{flex-direction:column;gap:14px;margin-top:auto;padding-top:8px;display:flex}.ad-grades{border:0;flex-wrap:wrap;align-items:center;gap:4px 20px;margin:0;padding:0;display:flex}.ad-grades legend{margin-bottom:2px;padding:0}.ad-radio{cursor:pointer;align-items:center;gap:8px;min-height:44px;font-size:15px;display:inline-flex}.ad-radio input{accent-color:var(--accent);width:18px;height:18px;margin:0}.ad-resolve .px-note{min-height:80px}.ad-actions{flex-wrap:wrap;gap:10px;display:flex}.ad-resolved{border-top:1px solid var(--line);flex-direction:column;gap:8px;margin-top:auto;padding-top:16px;display:flex}.ad-resolved p{font:17px/1.5 var(--serif)}.ad-page{flex-direction:column;gap:24px;max-width:1100px;padding:32px 48px;display:flex}.ad-h1{font-size:38px}.ad-table{border-collapse:collapse;width:100%;font-size:15px}.ad-table th,.ad-table td{border-bottom:1px solid var(--line);text-align:left;padding:12px 10px}.ad-table th{font:500 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.ad-skill{font:18px/1.3 var(--serif)}.ad-table td.ad-skill{padding:0}.ad-skill a{align-items:center;min-height:48px;padding:8px 10px;text-decoration:none;display:flex;color:var(--text)!important}.ad-skill a:hover{text-decoration:underline}.ad-preview{flex:1;min-height:0;display:flex}.ad-preview-main{flex-direction:column;flex:1;gap:16px;min-width:0;padding:32px 48px;display:flex}.ad-back-link{align-self:flex-start;align-items:center;min-height:44px;font-size:14px;display:inline-flex}.ad-views{border-bottom:1px solid var(--line);flex-wrap:wrap;gap:20px;display:flex}.ad-view{min-height:44px;font:18px/1 var(--serif);color:var(--muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;margin-bottom:-1px;padding:0 2px}.ad-view:hover{color:var(--text)}.ad-view.on{color:var(--accent);border-bottom-color:var(--accent);font-style:italic}.ad-lesson{border-top:1px solid var(--line);min-width:0;margin:0 -48px}.ad-lesson .lesson-text{flex-basis:52%}.ad-pool{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.ad-ex{border-bottom:1px solid var(--line);flex-direction:column;gap:10px;padding:20px 0;display:flex}.ad-ex .px-visual{max-width:360px}.ad-ex-more{flex-direction:column;gap:6px;padding-bottom:8px;display:flex}.ad-ex-more ol,.ad-ex-more ul{font:17px/1.55 var(--serif);margin:0 0 8px;padding-left:22px}.ad-check{border-left:1px solid var(--rule);flex-direction:column;flex:0 0 360px;gap:4px;padding:24px;display:flex}.ad-check-group{border-bottom:1px solid var(--line)}.ad-check-group .ad-ck{border-bottom:0;font-weight:600}.ad-ck-items{color:var(--muted);padding:0 0 8px 28px;font-size:13px}.ad-ck-items summary{cursor:pointer;align-items:center;width:fit-content;min-height:44px;display:flex}.ad-ck-items ul{flex-direction:column;gap:4px;margin:0 0 4px;padding-left:18px;display:flex}.ad-ck{border-bottom:1px solid var(--line);cursor:pointer;align-items:flex-start;gap:10px;min-height:44px;padding:10px 0;font-size:14px;display:flex}.ad-ck input{accent-color:var(--good);flex:none;width:18px;height:18px;margin:1px 0 0}.ad-check-foot{background:var(--bg);flex-direction:column;gap:10px;margin-top:20px;padding:12px 0;display:flex;position:sticky;bottom:0}@media (width<=860px){.ad{min-height:0;margin:-20px -16px 0}.ad-head{min-height:52px;padding:0 16px}.ad-split{flex-direction:column}.ad-queue{border-right:0;flex:none}.ad-split.has-detail .ad-queue,.ad-split:not(.has-detail) .ad-detail{display:none}.ad-detail{padding:16px}.ad-back{align-self:flex-start;align-items:center;min-height:44px;font-size:15px;display:inline-flex}.ad-prompt{font-size:20px}.ad-boxes{grid-template-columns:minmax(0,1fr);gap:12px}.ad-actions .btn{flex:100%}.ad-page{padding:16px}.ad-hide{display:none}.ad-preview{flex-direction:column}.ad-preview-main{padding:16px}.ad-lesson{margin:0 -16px}.ad-check{border-left:0;border-top:1px solid var(--rule);flex:none;padding:16px}}.horn{min-width:0;margin:0}.hn-plot{background:var(--bg);border:1px solid var(--line);box-sizing:border-box;margin-inline:auto;padding:8px 12px;container-type:inline-size}.hn-plot svg{width:100%;height:auto;display:block;overflow:visible}.hn-armline{stroke:var(--text);stroke-width:3px;stroke-linecap:round}.hn-vertex{fill:var(--text)}.hn-arc path{fill:none;stroke:var(--accent);stroke-width:2.5px}.hn-size{font:700 19px var(--sans);fill:var(--accent);paint-order:stroke;stroke:var(--bg);stroke-width:5px;stroke-linejoin:round}.hn-body{fill:color-mix(in srgb, var(--accent) 6%, var(--bg));stroke:var(--soft);stroke-width:1.5px}.hn-baseline,.hn-centre{stroke:var(--soft);stroke-width:1.5px}.hn-tick{stroke:var(--soft);stroke-width:1.2px}.hn-num{font:500 12px var(--sans);letter-spacing:-.02em;fill:var(--muted);transition:opacity .4s ease-out,fill .4s ease-out}.hn-narrow .hn-num{font-size:17px}.hn-scale .hn-num{paint-order:stroke;stroke:color-mix(in srgb, var(--accent) 6%, var(--bg));stroke-width:4px;stroke-opacity:.6;stroke-linejoin:round}.hn-narrow{display:none}@container (width<=399px){.hn-wide{display:none}.hn-narrow{display:inline}}.hn-inner-on .hn-inner,.hn-outer-on .hn-outer{fill:var(--accent);font-weight:700}.hn-inner-on .hn-outer,.hn-outer-on .hn-inner{opacity:.35}.hn-marks circle{fill:none;stroke:var(--accent);stroke-width:2.5px}.hn-layer{transition:opacity .4s ease-out}.hn-off{opacity:0}.horn.still *{transition:none}@media (prefers-reduced-motion:reduce){.horn *{transition:none}}@media (width<=860px){.hn-plot{padding:6px 8px}}.hundradreitur{min-width:0;margin:0}.hr-plot{background:var(--bg);border:1px solid var(--line);flex-wrap:wrap;justify-content:center;align-items:center;gap:20px;width:min(100%,680px);margin-inline:auto;padding:12px 16px;display:flex}.hr-grid{width:min(240px, 100%, var(--visual-max-h,240px));aspect-ratio:1;flex:none;height:auto;display:block}.hundradreitur.compact .hr-grid{width:min(160px, 100%, var(--visual-max-h,160px))}.hr-empty{fill:var(--line)}.hr-fill{fill:var(--accent)}.hr-gap{stroke:var(--bg);stroke-width:.9px}.hr-tenths line{stroke:var(--text);stroke-width:.9px}.hr-labels{flex-direction:column;gap:6px;min-width:4.5em;font-size:22px;display:flex}.hundradreitur.compact .hr-labels{font-size:17px}.hr-label{align-items:center;gap:.4em;min-height:2.2em;line-height:1.2;display:flex}.hr-label .katex{font-size:1em}.hr-eq{color:var(--muted)}.hr-grid,.hr-tenths,.hr-label{transition:opacity .4s ease-out}.hr-off{opacity:0}.hundradreitur.still .hr-grid,.hundradreitur.still .hr-tenths,.hundradreitur.still .hr-label{transition:none}@media (prefers-reduced-motion:reduce){.hr-grid,.hr-tenths,.hr-label{transition:none}}@media (width<=860px){.hr-plot{gap:12px;padding:8px 10px}.hr-grid{width:min(180px, 100%, var(--visual-max-h,180px))}.hr-labels{gap:2px;font-size:18px}.hr-label{min-height:1.9em}}.MafsView{background:var(--mafs-bg);-webkit-user-select:none;user-select:none;font-variant-numeric:tabular-nums;touch-action:none;--mafs-bg:black;--mafs-fg:white;--mafs-origin-color:var(--mafs-fg);--mafs-line-color:#555;--mafs-line-stroke-dash-style:4, 3;--mafs-axis-stroke-width:1px;--grid-line-subdivision-color:#222;--mafs-red:#f11d0e;--mafs-orange:#f14e0e;--mafs-yellow:#ffe44a;--mafs-green:#15e272;--mafs-blue:#58a6ff;--mafs-indigo:#7c58ff;--mafs-violet:#ae58ff;--mafs-pink:#ee00ab;outline:0;font-family:inherit;display:block;overflow:hidden}.MafsView text{fill:var(--mafs-fg);cursor:default}.MafsView path{stroke:var(--mafs-fg)}.MafsView:focus-visible{border-radius:5px;outline:3px solid #58a6ff}@supports not selector(:focus-visible){.MafsView:focus{border-radius:5px;outline:3px solid #58a6ff}}.mafs-shadow{paint-order:stroke;stroke-width:3px;stroke:var(--mafs-bg);stroke-opacity:.75;stroke-linejoin:round}.mafs-movable-point{cursor:grab;touch-action:none}.mafs-movable-point-dragging{cursor:grabbing}.mafs-movable-point:focus{outline:0}.mafs-movable-point *{fill:none;stroke:none}.mafs-movable-point-hitbox{fill:#0000}.mafs-movable-point-focus{stroke:var(--movable-point-color);stroke-width:2px;stroke-opacity:0;fill:none;transition:stroke-opacity .2s}.mafs-movable-point-ring{fill:var(--movable-point-color);fill-opacity:.25;stroke:none;transition:r .2s}.mafs-movable-point-point{fill:var(--movable-point-color);transition:r .2s}.mafs-movable-point:hover .mafs-movable-point-point,.mafs-movable-point:focus-visible .mafs-movable-point-point{r:calc(var(--movable-point-ring-size) - 2px)}.mafs-movable-point:hover .mafs-movable-point-ring,.mafs-movable-point:focus-visible .mafs-movable-point-ring{r:calc(var(--movable-point-ring-size) + 3px)}.mafs-movable-point.mafs-movable-point-dragging .mafs-movable-point-ring{r:var(--movable-point-ring-size)}.mafs-movable-point:focus-visible .mafs-movable-point-focus{stroke-opacity:1}.prosentustika{min-width:0;margin:0}.ps-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,680px);margin-inline:auto;padding:8px 4px}.ps-plot svg{width:100%;display:block;overflow:visible}.ps-empty{fill:var(--line)}.ps-fill{fill:var(--accent)}.ps-gap{stroke:var(--bg);stroke-width:2px}.ps-tick,.ps-end{stroke:var(--text);stroke-width:1.5px}.ps-edge{stroke:var(--accent);stroke-width:2.5px}.ps-num{font-family:var(--sans);fill:var(--muted);font-variant-numeric:tabular-nums;font-weight:500;animation:.4s ease-out ps-in}.ps-num.ps-k-end{fill:var(--text)}.ps-num.ps-k-whole{fill:var(--text);font-weight:700}.ps-num.ps-k-part{fill:var(--accent);font-weight:700}.prosentustika g,.ps-fill,.ps-edge,.ps-tick{transition:opacity .4s ease-out}.ps-off{opacity:0}@keyframes ps-in{0%{opacity:0}to{opacity:1}}.prosentustika.still g,.prosentustika.still .ps-fill,.prosentustika.still .ps-edge,.prosentustika.still .ps-tick,.prosentustika.still .ps-num{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.prosentustika g,.ps-fill,.ps-edge,.ps-tick,.ps-num{transition:none;animation:none}}.thattatre{min-width:0;margin:0}.tt-plot{background:var(--bg);border:1px solid var(--line);flex-direction:column;align-items:center;gap:4px;width:min(100%,680px);margin-inline:auto;padding:8px 16px 12px;display:flex}.tt-svg{width:100%;height:auto;max-height:max(160px, calc(var(--visual-max-h,100vh) - 60px));animation:.4s ease-out both tt-in;display:block}.thattatre.compact .tt-svg{max-height:180px}.tt-svg text{font:500 21px var(--serif);fill:var(--text);font-variant-numeric:lining-nums}.tt-svg text.tt-prime{fill:var(--accent)}.tt-edge{stroke:var(--muted);stroke-width:1.5px;stroke-linecap:round}.tt-ring{fill:none;stroke:var(--accent);stroke-width:2px}.tt-eq{color:var(--text);align-items:center;min-height:1.6em;font-size:21px;display:flex}.tt-eq .katex{font-size:1em}.tt-node,.tt-edge,.tt-ring,.tt-eq{transition:opacity .4s ease-out}.tt-off{opacity:0}@keyframes tt-in{0%{opacity:0}to{opacity:1}}.thattatre.still .tt-svg{animation:none}.thattatre.still .tt-node,.thattatre.still .tt-edge,.thattatre.still .tt-ring,.thattatre.still .tt-eq{transition:none}@media (prefers-reduced-motion:reduce){.tt-svg{animation:none}.tt-node,.tt-edge,.tt-ring,.tt-eq{transition:none}}@media (width<=860px){.tt-plot{padding:6px 10px 8px}.tt-eq{font-size:18px}}.veldatafla{min-width:0;margin:0}.vt-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,620px);margin-inline:auto;padding:8px 12px}.vt-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.vt-pow{font:500 24px var(--sans);fill:var(--text)}.vt-sup{font-size:18px}.vt-val{font:600 24px var(--sans);fill:var(--accent)}.vt-frac{font:600 20px var(--sans);fill:var(--accent)}.vt-bar{stroke:var(--accent);stroke-width:1.6px}.vt-dec{font:500 18px var(--sans);fill:var(--soft)}.vt-hl{fill:var(--highlight)}.vt-arrow path{fill:none;stroke:var(--muted);stroke-width:1.6px;stroke-linecap:round}.vt-op{font:500 18px var(--sans);fill:var(--muted)}.vt-line{text-align:center;justify-content:center;align-items:center;min-height:2.4em;font-size:22px;display:flex}.vt-line .katex{font-size:1em}.vt-minus{flex-direction:column;justify-content:center;align-items:center;gap:2px;min-height:2.8em;font-size:22px;display:flex}.vt-minus .katex{font-size:1em}.vt-col,.vt-pow,.vt-col g,.vt-dec,.vt-hl,.vt-arrow,.vt-line,.vt-minus{transition:opacity .4s ease-out}.vt-off{opacity:0}.veldatafla.still *{transition:none}@media (prefers-reduced-motion:reduce){.veldatafla *{transition:none}}@media (width<=860px){.vt-plot{padding:6px 8px}.vt-line{min-height:2.2em;font-size:18px}.vt-minus{font-size:18px}}.linugraf{flex-direction:column;gap:8px;min-width:0;margin:0;display:flex}.lg-plot{width:min(100%, calc(var(--visual-max-h,100vh) * 4 / 3));aspect-ratio:4/3;background:var(--bg);border:1px solid var(--line);margin-inline:auto;overflow:hidden}.linugraf.compact .lg-plot{aspect-ratio:5/3;width:min(100%, calc(var(--visual-max-h,100vh) * 5 / 3))}@media (width<=860px){.lg-plot{aspect-ratio:3/2;width:min(100%, calc(var(--visual-max-h,100vh) * 3 / 2))}}.lg-hint{font:500 13px/1.3 var(--sans);color:var(--muted);align-items:center;gap:6px;display:inline-flex}.linugraf .MafsView{--mafs-bg:var(--bg);--mafs-fg:var(--text);--mafs-origin-color:var(--text);--mafs-line-color:var(--line);--mafs-axis-stroke-width:1.5px;--grid-line-subdivision-color:var(--line);font-family:var(--sans)}.linugraf .MafsView:focus-visible{outline:2px solid var(--accent);border-radius:0}.linugraf .mafs-axis text{font:400 12px var(--sans);fill:var(--faint)}.linugraf .mafs-shadow{stroke:var(--bg)}.linugraf text.lg-math{font-family:var(--serif);font-style:italic}.linugraf text.lg-eq{paint-order:stroke;stroke:var(--bg);stroke-width:4px;stroke-linejoin:round}.linugraf text.lg-label{font-family:var(--serif)}.linugraf .mafs-movable-point-focus{stroke-opacity:0}.linugraf .mafs-movable-point:focus-visible .mafs-movable-point-focus{stroke-opacity:1}.linugraf .mafs-movable-point-ring{fill:var(--movable-point-color);fill-opacity:.18}.linugraf .mafs-movable-point-point{fill:var(--movable-point-color)}.lg-fade{animation:.4s ease-out both lg-fade}@keyframes lg-fade{0%{opacity:0}to{opacity:1}}.lg-pulse{pointer-events:none;animation:1.6s ease-out both lg-pulse}@keyframes lg-pulse{0%{opacity:.8;r:6}to{opacity:0;r:24}}@media (prefers-reduced-motion:reduce){.lg-fade,.lg-pulse{animation:none}.lg-pulse{opacity:0}}.brotastika{min-width:0;margin:0}.bs-plot{background:var(--bg);border:1px solid var(--line);align-items:flex-start;gap:12px;width:min(100%,680px);margin-inline:auto;padding:8px 16px;display:flex}.brotastika.compact .bs-plot{gap:8px;padding:4px 12px}.bs-labels{flex:none;width:3.4em;font-size:19px;position:relative}.brotastika.compact .bs-labels{width:3em;font-size:16px}.bs-label{text-align:center;line-height:1;position:absolute;left:0;right:0;transform:translateY(-50%)}.bs-label .katex{font-size:1em}.bs-bars{flex:1 1 0;min-width:0}.bs-bars svg{width:100%;display:block;overflow:visible}.bs-empty{fill:var(--line)}.bs-div{stroke:var(--bg);transition:stroke-width .4s,stroke-opacity .4s}.bs-ticks line{stroke:var(--text);stroke-width:2px}.bs-edge{stroke:var(--text);stroke-width:1.5px;stroke-dasharray:5 4}.bs-bar,.bs-ticks,.bs-edge,.bs-label{transition:opacity .4s ease-out}.bs-off{opacity:0}.brotastika.still .bs-bar,.brotastika.still .bs-ticks,.brotastika.still .bs-edge,.brotastika.still .bs-label,.brotastika.still .bs-div{transition:none}@media (prefers-reduced-motion:reduce){.bs-bar,.bs-ticks,.bs-edge,.bs-label,.bs-div{transition:none}}@media (width<=860px){.bs-plot{gap:8px;padding:6px 10px}.bs-labels{width:2.9em;font-size:17px}}.flatarlikan{min-width:0;margin:0}.fl-plot{background:var(--bg);border:1px solid var(--line);justify-content:center;align-items:center;gap:12px;width:min(100%,680px);margin-inline:auto;padding:10px 16px;font-size:19px;display:flex}.fl-square{width:min(100%, 300px, calc(var(--visual-max-h,100vh) - 110px));flex:0 auto;min-width:120px}.flatarlikan.compact .fl-square{width:min(100%, 200px, calc(var(--visual-max-h,100vh) - 90px))}.fl-square svg{aspect-ratio:1;width:100%;display:block;overflow:visible}.fl-empty{fill:var(--line)}.fl-frame{fill:none;stroke:var(--text);stroke-width:1.5px}.fl-div{stroke:var(--bg);stroke-width:3px}.fl-label{flex:none;line-height:1}.fl-label .katex{font-size:1em}.fl-left,.fl-right{text-align:center;width:3.2em}.fl-below{text-align:center;margin-top:6px}.fl-layer,.fl-label{transition:opacity .4s ease-out}.fl-off{opacity:0}.flatarlikan.still .fl-layer,.flatarlikan.still .fl-label{transition:none}@media (prefers-reduced-motion:reduce){.fl-layer,.fl-label{transition:none}}@media (width<=860px){.fl-plot{gap:8px;padding:6px 10px;font-size:17px}.fl-left,.fl-right{width:2.9em}}.talnatafla,.thattamynd{min-width:0;margin:0}.tt-plot,.tm-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,560px);margin-inline:auto;padding:8px 12px}.tt-plot svg,.tm-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.tt-cell text{font:500 15px var(--sans);fill:var(--text);transition:fill .4s}.tt-bg{fill:var(--surface);transition:fill .4s}.tt-ring{fill:none;stroke:var(--good);stroke-width:2.5px;opacity:0;transition:opacity .4s}.tt-a .tt-bg{fill:var(--highlight)}.tt-b .tt-ring{opacity:1}.tt-both .tt-bg{fill:var(--accent)}.tt-both text{fill:var(--accent-text);font-weight:700}.tt-cell{transition:opacity .4s}.tt-dim{opacity:.4}.tt-first{fill:none;stroke:var(--text);stroke-width:2.5px;transition:opacity .4s}.tt-hidden,.tt-off{opacity:0}.tm-circle circle{stroke-width:2px}.tm-ca circle{stroke:var(--accent);fill:color-mix(in srgb, var(--accent) 7%, transparent)}.tm-cb circle{stroke:var(--good);fill:color-mix(in srgb, var(--good) 7%, transparent)}.tm-ca .tm-num{fill:var(--accent)}.tm-cb .tm-num{fill:var(--good)}.tm-num{font:700 24px var(--sans)}.tm-overlap path{fill:color-mix(in srgb, var(--text) 10%, transparent)}.tm-item{font-family:var(--sans);fill:var(--soft);font-weight:500;animation:.4s ease-out backwards tm-fade}.tm-strong{fill:var(--text);font-weight:800}.tm-caption{font:600 17px var(--sans);fill:var(--text)}.tm-circle,.tm-overlap,.tm-item,.tm-caption{transition:opacity .4s ease-out}.tm-off{opacity:0}@keyframes tm-fade{0%{opacity:0}}.talnatafla.still *,.thattamynd.still *{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.talnatafla *,.thattamynd *{transition:none;animation:none}}@media (width<=860px){.tt-plot,.tm-plot{padding:6px 8px}}.talnalina{min-width:0;margin:0}.tl-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,600px);margin-inline:auto;padding:8px 12px}.tl-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.tl-line,.tl-tick{stroke:var(--text);stroke-width:2px}.tl-zero{stroke-width:3px}.tl-head{fill:var(--text)}.tl-num{font:500 19px var(--sans);fill:var(--muted)}.tl-num-start{fill:var(--text);font-weight:700}.tl-num-end{fill:var(--accent);font-weight:700}.tl-num-trail{fill:var(--soft)}.tl-neg{fill:color-mix(in srgb, var(--accent) 22%, transparent)}.tl-pos{fill:color-mix(in srgb, var(--good) 22%, transparent)}.tl-side{font:600 19px var(--sans)}.tl-side-neg{fill:var(--accent)}.tl-side-pos{fill:var(--good)}.tl-dot-start{fill:var(--text)}.tl-dot-end{fill:var(--accent)}.tl-dot-trail{fill:var(--bg);stroke:var(--accent);stroke-width:2.5px}.tl-arc{fill:none;stroke:var(--accent);stroke-width:2.5px;stroke-linecap:round}.tl-arrow{fill:var(--accent);transition:opacity .15s ease-out}.tl-jump{font:600 19px var(--sans);fill:var(--accent);paint-order:stroke;stroke:var(--bg);stroke-width:4px;stroke-linejoin:round;transition:opacity .2s ease-out}.tl-bracket{fill:none;stroke:var(--soft);stroke-width:2px}.tl-dist{font:600 19px var(--sans);fill:var(--soft)}.tl-eq{font:600 22px var(--sans);fill:var(--text)}.tl-band{stroke:var(--accent);stroke-width:10px;stroke-linecap:butt;opacity:.6}.tl-band-head{fill:var(--accent);opacity:.6}.tl-end{stroke:var(--accent);stroke-width:3px;transition:fill .3s ease-out}.tl-end-closed{fill:var(--accent)}.tl-end-open{fill:var(--bg)}.tl-end-bracket{fill:none;stroke:var(--accent);stroke-width:3.5px;stroke-linejoin:miter}.tl-probe-in{fill:var(--good)}.tl-probe-out{fill:var(--muted)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .tl-band,:root:not([data-theme=light]) .tl-band-head{opacity:.85}}:root[data-theme=dark] .tl-band,:root[data-theme=dark] .tl-band-head{opacity:.85}.tl-probe-num{font:600 19px var(--sans);paint-order:stroke;stroke:var(--bg);stroke-width:4px;stroke-linejoin:round}.tl-layer,.tl-dot,.tl-eq,.tl-num{transition:opacity .4s ease-out}.tl-off{opacity:0}.talnalina.still *{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.talnalina *{transition:none;animation:none}}@media (width<=860px){.tl-plot{padding:6px 8px}}.talnamengi{min-width:0;margin:0}.tg-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,560px);margin-inline:auto;padding:8px 12px}.tg-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.tg-set rect{fill:none;stroke:var(--muted);stroke-width:1.5px;transition:fill .4s}.tg-N rect,.tg-Z rect{stroke:var(--accent)}.tg-I rect{stroke:var(--good);stroke-dasharray:5 4}.tg-set.tg-hl rect{fill:var(--highlight)}.tg-I.tg-hl rect{fill:color-mix(in srgb, var(--good) 18%, transparent)}.tg-sym{font:700 20px var(--serif);fill:var(--text)}.tg-word{font:600 16px var(--sans);fill:var(--good)}.tg-num{font:500 18px var(--sans);fill:var(--text);animation:.4s ease-out backwards tm-fade}.tg-strong{font-weight:800}.tg-dim{fill:var(--faint)}.tg-set,.tg-num{transition:opacity .4s ease-out,fill .4s}.tg-off{opacity:0}.talnamengi.still *{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.talnamengi *{transition:none;animation:none}}@media (width<=860px){.tg-plot{padding:6px 8px}}.mengjamynd{min-width:0;margin:0}.mm-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,600px);margin-inline:auto;padding:8px 12px}.mm-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.mm-set ellipse{fill:none;stroke:var(--accent);stroke-width:2px;transition:fill .4s}.mm-B ellipse{stroke:var(--good)}.mm-set.mm-hl ellipse{fill:var(--highlight)}.mm-B.mm-hl ellipse{fill:color-mix(in srgb, var(--good) 18%, transparent)}.mm-region path{fill:var(--highlight);animation:.4s ease-out backwards tm-fade}.mm-name{font:italic 700 24px var(--serif);fill:var(--text)}.mm-name.mm-upright{font-style:normal}.mm-item{font:500 18px var(--sans);fill:var(--text)}.mm-strong{font-weight:800}.mm-dim{fill:var(--muted)}.mm-ring{fill:none;stroke:var(--accent);stroke-width:2.5px;animation:.3s ease-out backwards tm-fade}.mm-set,.mm-item{transition:opacity .4s ease-out,fill .4s}.mm-off{opacity:0}.mengjamynd.still *{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.mengjamynd *{transition:none;animation:none}}@media (width<=860px){.mm-plot{padding:6px 8px}}.innsetning{min-width:0;margin:0}.in-plot{background:var(--bg);border:1px solid var(--line);width:min(100%,520px);margin-inline:auto;padding:8px 12px}.in-plot svg{width:100%;height:auto;max-height:var(--visual-max-h,none);display:block}.in-line{font:500 26px var(--sans);fill:var(--text);white-space:pre}.in-sup{font-size:17px}.in-eq{fill:var(--muted)}.in-var{fill:var(--accent);font-family:var(--serif);font-style:italic;font-weight:600}.in-val{fill:var(--accent);font-weight:700}.in-var.in-alt,.in-val.in-alt{fill:var(--good)}.in-final{font-weight:700}.in-vals{font:500 22px var(--sans);fill:var(--text);white-space:pre}.in-wrong{font:500 22px var(--sans);fill:var(--muted);white-space:pre}.in-cross{fill:var(--bad);font-weight:700}.in-rule{stroke:var(--line);stroke-width:1px}.in-trail{font:500 20px var(--sans);fill:var(--soft);white-space:pre}.in-step,.in-vals,.in-wrong,.in-trail{transition:opacity .4s ease-out}.in-off{opacity:0}.innsetning.still *{transition:none;animation:none}@media (prefers-reduced-motion:reduce){.innsetning *{transition:none;animation:none}}@media (width<=860px){.in-plot{padding:6px 8px}}.visual-missing{border:1px solid var(--line);background:var(--bg);font:17px/1.5 var(--serif);color:var(--soft);margin:0;padding:24px}.linuhorn{min-width:0;margin:0}.lh-plot{background:var(--bg);border:1px solid var(--line);box-sizing:border-box;margin-inline:auto;padding:8px 12px}.lh-plot svg{width:100%;height:auto;display:block;overflow:visible}.lh-line{stroke:var(--text);stroke-width:3px;stroke-linecap:round}.lh-vertex{fill:var(--text)}.lh-par path{fill:none;stroke:var(--text);stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round}.lh-mark{fill:none;stroke:var(--accent);stroke-width:2.5px}.lh-fill{fill:color-mix(in srgb, var(--accent) 30%, transparent)}.lh-fill2{fill:color-mix(in srgb, var(--good) 30%, transparent)}.lh-label{font:700 20px var(--sans);fill:var(--accent);paint-order:stroke;stroke:var(--bg);stroke-width:5px;stroke-linejoin:round}.lh-letter{font:italic 600 23px var(--serif)}.lh-layer{transition:opacity .4s ease-out}.lh-off{opacity:0}.linuhorn.still *{transition:none}@media (prefers-reduced-motion:reduce){.linuhorn *{transition:none}}@media (width<=860px){.lh-plot{padding:6px 8px}}.marghyrningur{min-width:0;margin:0}.mh-plot{background:var(--bg);border:1px solid var(--line);box-sizing:border-box;margin-inline:auto;padding:8px 12px}.mh-plot svg{width:100%;height:auto;display:block;overflow:visible}.mh-side{fill:none;stroke:var(--text);stroke-width:3px;stroke-linejoin:round}.mh-diag,.mh-spoke{stroke:var(--text);stroke-width:2px;stroke-dasharray:7 5;stroke-linecap:round}.mh-par,.mh-ext{stroke:var(--text);stroke-width:2.5px;stroke-linecap:round}.mh-vertex{fill:var(--text)}.mh-round,.mh-mark{fill:none;stroke:var(--accent);stroke-width:2.5px}.mh-fill{fill:color-mix(in srgb, var(--accent) 30%, transparent)}.mh-fill2{fill:color-mix(in srgb, var(--good) 30%, transparent)}.mh-fill3{fill:color-mix(in srgb, var(--partial) 35%, transparent)}.mh-piece.mh-fill{fill:color-mix(in srgb, var(--accent) 13%, transparent)}.mh-piece.mh-fill2{fill:color-mix(in srgb, var(--good) 15%, transparent)}.mh-piece.mh-fill3{fill:color-mix(in srgb, var(--partial) 18%, transparent)}.mh-label{font:700 20px var(--sans);fill:var(--accent);paint-order:stroke;stroke:var(--bg);stroke-width:5px;stroke-linejoin:round}.mh-letter{font:italic 600 23px var(--serif)}.mh-label2{fill:var(--good)}.mh-label3{fill:var(--partial)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .mh-fill:not(.mh-piece){fill:color-mix(in srgb, var(--accent) 50%, transparent)}:root:not([data-theme=light]) .mh-fill2:not(.mh-piece){fill:color-mix(in srgb, var(--good) 50%, transparent)}:root:not([data-theme=light]) .mh-fill3:not(.mh-piece){fill:color-mix(in srgb, var(--partial) 55%, transparent)}}:root[data-theme=dark] .mh-fill:not(.mh-piece){fill:color-mix(in srgb, var(--accent) 50%, transparent)}:root[data-theme=dark] .mh-fill2:not(.mh-piece){fill:color-mix(in srgb, var(--good) 50%, transparent)}:root[data-theme=dark] .mh-fill3:not(.mh-piece){fill:color-mix(in srgb, var(--partial) 55%, transparent)}.mh-layer{transition:opacity .4s ease-out}.mh-off{opacity:0}.marghyrningur.still *{transition:none}@media (prefers-reduced-motion:reduce){.marghyrningur *{transition:none}}@media (width<=860px){.mh-plot{padding:6px 8px}}.levelbar{flex:none;gap:2px;height:6px;display:flex}.levelbar>span{height:100%;display:block}.nv-error{border-top:1px solid var(--rule);flex-direction:column;align-items:flex-start;gap:16px;padding-top:16px;display:flex}.nv-error-title{font:24px/1.3 var(--serif)}.hm-hero{border-top:1px solid var(--rule);justify-content:space-between;align-items:flex-end;gap:40px;padding-top:16px;display:flex}.hm-hero-text{flex-direction:column;gap:10px;min-width:0;display:flex}.hm-title{max-width:640px;font-size:48px}.hm-title-link{text-decoration:none;color:inherit!important}.hm-title-link:hover{text-underline-offset:6px;text-decoration:underline;text-decoration-thickness:1px}.hm-reason{font:19px/1.4 var(--serif);color:var(--muted)}.hm-reason:has(.mastery){flex-wrap:wrap;align-items:center;gap:4px 14px;display:flex}.hm-reason .mastery{font:15px/1 var(--sans);color:var(--soft);border-right:1px solid var(--line);padding-right:14px}.hm-go{flex:none}.hm-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:48px;display:grid}.hm-col{flex-direction:column;display:flex}.hm-h2{margin-bottom:8px;font-size:26px}.hm-none{color:var(--muted);border-bottom:1px solid var(--line);padding:14px 0}.hm-row{min-height:48px;text-decoration:none;color:var(--text)!important}.hm-row:hover{background:var(--surface)}.hm-course{font:20px/1.2 var(--serif);min-width:0}.hm-by{color:var(--muted);font-size:16px}.hm-recent-name{min-width:0}.hm-grade{flex:none;font-size:14px}.hm-aside{flex-direction:column;gap:32px;display:flex}.hm-review{background:var(--surface);border:1px solid var(--line);flex-direction:column;gap:12px;padding:24px;display:flex}.hm-review-n{font:30px/1.1 var(--serif)}.hm-review-sub{color:var(--muted);font-size:15px}.hm-week{flex-direction:column;gap:12px;display:flex}.hm-dots{gap:10px;margin:0;padding:0;list-style:none;display:flex}.hm-dot{color:var(--muted);flex-direction:column;align-items:center;gap:6px;font-size:12px;display:flex}.hm-dot-c{border:1px solid var(--line);box-sizing:border-box;border-radius:50%;width:22px;height:22px}.hm-dot.active .hm-dot-c{background:var(--text);border-color:var(--text)}.hm-dot.today,.hm-dot.is-today{color:var(--accent)}.hm-dot.today .hm-dot-c{border:2px solid var(--accent)}.hm-dot.future{color:var(--faint)}.hm-dot.future .hm-dot-c{border-style:dashed}.hm-week-sum{color:var(--muted);font-size:14px}.hm-empty{flex-direction:column;gap:24px;display:flex}.hm-suggest{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.hm-sug{background:var(--surface);border:1px solid var(--line);flex-direction:column;gap:8px;padding:20px 24px;text-decoration:none;display:flex;color:var(--text)!important}.hm-sug:hover{border-color:var(--rule)}.hm-sug-name{font:22px/1.2 var(--serif);align-items:center;gap:10px;display:flex}.hm-sug-desc{color:var(--muted);font-size:15px}@media (width<=860px){.hm-hero{flex-direction:column;align-items:stretch;gap:20px}.hm-title{font-size:36px}.hm-grid{grid-template-columns:minmax(0,1fr);gap:36px}.hm-suggest{grid-template-columns:minmax(0,1fr);gap:12px}.hm-row{flex-wrap:wrap;row-gap:8px}}.km{gap:20px;max-width:none}.km-head{border-bottom:1px solid var(--rule);flex-wrap:wrap;align-items:baseline;gap:8px 24px;padding-bottom:14px;display:flex}.km-h1{font-size:40px}.km-count{color:var(--muted)}.km-legend{color:var(--muted);gap:16px;margin-left:auto;font-size:13px;display:flex}.km-legend>span{align-items:center;gap:5px;display:inline-flex}.km-bar{z-index:20;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;gap:12px;margin-bottom:-8px;padding:8px 0 6px;display:flex;position:sticky;top:0}.km-tools{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px 28px;font-size:14px;display:flex}.km-search{border-bottom:1px solid var(--line);flex:320px;align-items:center;gap:8px;max-width:520px;min-height:44px;display:flex}.km-search:focus-within{border-color:var(--rule)}.km-search input{font:16px/1.2 var(--sans);color:var(--text);background:0 0;border:0;outline:none;width:100%;min-height:40px}.km-select{align-items:center;gap:8px;min-height:44px;display:flex}.km-select select{font:15px/1.2 var(--sans);color:var(--text);border:0;border-bottom:1px solid var(--line);background:0 0;max-width:260px;min-height:36px;padding:0 4px}.km-chips{color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px;font-size:14px;display:flex}.km-chips button{border:1px solid var(--line);min-height:44px;font:14px/1 var(--sans);color:var(--muted);cursor:pointer;background:0 0;border-radius:22px;padding:0 14px}.km-chips button:hover{color:var(--text)}.km-chips button[aria-pressed=true]{border-color:var(--accent);color:var(--accent);background:var(--surface)}.km-shown{margin-left:auto}.km-svid-jump{flex-wrap:wrap;gap:0 24px;display:flex}.km-svid-jump a{min-height:40px;font:16px/1.2 var(--serif);align-items:center;gap:6px;text-decoration:none;display:inline-flex;color:var(--text)!important}.km-svid-jump a:hover{color:var(--accent)!important}.km-jump-n{font:13px/1 var(--sans);color:var(--muted)}.km-toc{columns:2 420px;column-gap:56px}.km-part{margin-bottom:28px}.km-h2{break-after:avoid;border-bottom:1px solid var(--line);margin-bottom:4px;padding-bottom:6px;scroll-margin-top:190px;font-size:24px}.km-roman{color:var(--muted)}.km-haefni{break-inside:avoid;padding-bottom:10px}.km-k{font:500 12px/1.4 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);align-items:baseline;gap:8px;margin:14px 0 4px;display:flex}.km-k-n{letter-spacing:0;font-variant-numeric:tabular-nums;margin-left:auto}.km-list{margin:0;padding:0;list-style:none}.km-it{font:17px/1.3 var(--serif);align-items:baseline;gap:10px;padding:7px 4px;scroll-margin-top:190px;text-decoration:none;display:flex;color:var(--text)!important}.km-it:hover{background:var(--surface)}.km-it svg{flex:none;align-self:center}.km-no{font:13px/1 var(--sans);color:var(--muted);font-variant-numeric:tabular-nums;flex:none;min-width:44px}.km-name{min-width:0}.km-name mark{background:var(--well);color:inherit;border-bottom:2px solid var(--accent);padding:0 1px}.km-dots{border-bottom:1px dotted var(--line);flex:24px;min-width:24px;transform:translateY(-4px)}.km-band{font:12px/1 var(--sans);color:var(--faint);flex:none}.km-it.dashed{color:var(--faint)!important}.km-it.rel{background:var(--well)}.km-it.sel{background:var(--surface);border-left:2px solid var(--accent);font-style:italic;color:var(--accent)!important}.km-it.dim{opacity:.35}.km-num{font:italic 15px/1 var(--serif);color:var(--muted);text-align:right;min-width:18px}.km-it.wip{color:var(--faint)!important}.km-it.wip svg{opacity:.6}.km-legend .km-legend-wip{color:var(--faint)}.km-empty{color:var(--muted);column-span:all;padding:12px 0;font-size:15px}.km-note{color:var(--muted);font-size:14px}.km-panel{z-index:25;background:var(--bg);border-left:1px solid var(--line);outline:none;flex-direction:column;gap:14px;width:380px;padding:40px 32px;display:flex;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;box-shadow:-12px 0 32px -24px #0000004d}.km-has-panel{margin-right:364px}.km-close{min-width:44px;min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;display:inline-flex;position:absolute;top:12px;right:12px}.km-close:hover{color:var(--text)}.km-p-title{padding-right:32px;font-size:30px}.km-p-desc{font:18px/1.45 var(--serif);color:var(--soft)}.km-p-note{color:var(--partial);font-size:14px}.km-p-actions{flex-wrap:wrap;gap:8px;margin:4px 0 8px;display:flex}.km-p-list{border-top:1px solid var(--line);flex-direction:column;margin-top:4px;padding-top:14px;display:flex}.km-p-list .eb{margin-bottom:4px}.km-p-row{min-height:40px;font:17px/1.3 var(--serif);align-items:center;gap:10px;text-decoration:none;display:flex;color:var(--text)!important}.km-p-row:hover{color:var(--accent)!important}.km-p-row svg{flex:none}.km-p-none{color:var(--muted);padding:6px 0;font-size:14px}@media (width<=860px){.km-h1{font-size:34px}.km-legend{display:none}.km-tools{gap:4px 20px}.km-search{flex:100%;max-width:none}.km-select{flex:40%}.km-select select{flex:1;min-width:0;min-height:44px}.km-search input{min-height:44px}.km-svid-jump{display:none}.km-chips button{padding:0 12px}.km-bar{position:static}.km-h2,.km-it{scroll-margin-top:16px}.km-has-panel{margin-right:0}.km-it{align-items:center;min-height:48px}.km-no{min-width:40px}.km-dots{align-self:flex-end;margin-bottom:14px;transform:none}.km-panel{display:none}}.hf{gap:32px}@media (width<=860px){.hf{margin:0}}.hf-head{justify-content:space-between;align-items:flex-end;gap:32px;display:flex}.hf-title{flex-direction:column;gap:8px;min-width:0;display:flex}.hf-h1{max-width:620px;font-size:46px}.hf-crumb{color:var(--muted);font-size:14px}.hf-crumb a{color:var(--muted);-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line)}.hf-crumb a:hover{color:var(--text)}.hf-level{font:18px/1.4 var(--serif);color:var(--muted);flex-wrap:wrap;align-items:center;gap:4px 14px;margin-top:4px;display:flex}.hf-level .mastery{font:15px/1 var(--sans);color:var(--soft);border-right:1px solid var(--line);padding-right:14px}.hf-level .mastery.l4{color:var(--good)}.hf-level .mastery.decayed{color:var(--partial)}.hf-graph{flex:none;align-self:flex-start;overflow:visible}.hf-graph text{font:11px var(--sans);fill:var(--muted)}.hf-graph .hf-more{fill:var(--faint);font-size:12px}.hf-node{cursor:pointer}.hf-node:hover text,.hf-node:focus-visible text{fill:var(--accent)}.hf-desc{font:19px/1.5 var(--serif);color:var(--soft);max-width:680px;margin-top:-8px}.hf-wip{color:var(--partial);margin-top:-8px;font-size:15px}.hf-hub{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.hf-card{border:1px solid var(--line);background:var(--surface);flex-direction:column;gap:12px;min-height:220px;padding:28px;text-decoration:none;display:flex;color:var(--text)!important}a.hf-card:hover{border-color:var(--rule)}.hf-card.on{border:2px solid var(--accent);padding:27px}.hf-card.on>.eb{color:var(--accent)}.hf-card.off{opacity:.55}.hf-card-t{font:28px/1.1 var(--serif)}.hf-card-d{color:var(--muted)}.hf-card-foot{flex-direction:column;gap:8px;margin-top:auto;font-size:14px;display:flex}.hf-card-btn{align-self:flex-start}.hf-read{background:var(--line);height:6px;display:block}.hf-read>span{background:var(--soft);height:100%;display:block}.hf-steps-label{color:var(--muted)}.hf-steps{gap:3px;display:flex}.hf-steps>span{flex:1;height:6px}.hf-lessons{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.hf-lessons li{border-bottom:1px solid var(--line);flex-direction:column;gap:2px;padding:8px 0;display:flex}.hf-lessons a{font:18px/1.3 var(--serif);color:var(--text);align-items:center;min-height:44px;text-decoration:none;display:flex}.hf-lessons a:hover{color:var(--accent)}.hf-lessons .hf-card-foot{margin-top:0}.hf-more{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;margin-top:8px;display:grid}.hf-more-col{flex-direction:column;gap:36px;display:flex}.hf-sec{flex-direction:column;display:flex}.hf-h2{margin-bottom:8px;font-size:26px}.hf-note{color:var(--partial);margin-bottom:6px;font-size:14px}.hf-none{color:var(--muted);border-bottom:1px solid var(--line);padding:10px 0;font-size:15px}.hf-rows{margin:0;padding:0;list-style:none}.hf-row{border-bottom:1px solid var(--line);min-height:48px;font:18px/1.3 var(--serif);align-items:center;gap:12px;padding:8px 0;text-decoration:none;display:flex;color:var(--text)!important}.hf-row:hover{background:var(--surface)}.hf-row svg{flex:none}.hf-row-name{flex:1;min-width:0}.hf-row-lv{font:13px/1 var(--sans);color:var(--muted);flex:none}.hf-terms{flex-wrap:wrap;gap:8px;display:flex}.hf-term{border:1px solid var(--line);min-height:40px;font:17px/1 var(--serif);align-items:center;padding:0 14px;text-decoration:none;display:inline-flex;color:var(--text)!important}.hf-term:hover{border-color:var(--rule)}.hf-hist{margin:0;padding:0;list-style:none}.hf-hist-row{border-bottom:1px solid var(--line);grid-template-columns:72px minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 0;font-size:15px;display:grid}.hf-hist-date{color:var(--muted);font-size:14px}.hf-hist-change{align-items:center;gap:6px;display:inline-flex}.hf-hist-why{color:var(--muted);font-size:14px}.hf-link{align-self:flex-start;align-items:center;min-height:44px;margin-top:12px;display:inline-flex}@media (width<=1100px){.hf-head{flex-direction:column;align-items:flex-start}}@media (width<=860px){.hf-h1{font-size:34px}.hf-graph{align-self:center;width:100%;max-width:340px;height:auto}.hf-hub{grid-template-columns:minmax(0,1fr);gap:12px}.hf-card{min-height:0;padding:20px}.hf-card.on{padding:19px}.hf-more{grid-template-columns:minmax(0,1fr);gap:36px}}.nv-copy{align-items:flex-end;gap:12px;display:flex}.nv-copy input{flex:auto;min-width:0}.nv-code{letter-spacing:.08em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace!important}.field label{color:var(--muted);font-size:14px}.field label.eb{font-size:12px}.af-head{border-top:1px solid var(--rule);flex-direction:column;gap:8px;padding-top:16px;display:flex}.af-lede{font:19px/1.4 var(--serif);color:var(--muted)}.af-h2{margin-bottom:8px;font-size:28px}.af-list{margin:0;padding:0;list-style:none}.af-row{min-height:48px}.af-main{flex-direction:column;flex:auto;gap:2px;min-width:0;padding:4px 0;text-decoration:none;display:flex;color:var(--text)!important}.af-main:hover .af-name{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.af-name{font:21px/1.25 var(--serif)}.af-by{color:var(--muted);font-size:15px}.af-prog{flex-direction:column;flex:none;align-items:flex-end;gap:6px;display:flex}.af-count{color:var(--muted);font-size:13px}.af-none{color:var(--muted);border-bottom:1px solid var(--line);max-width:640px;padding:14px 0}.af-added{color:var(--good);flex:none;align-items:center;min-height:44px;font-size:14px;display:inline-flex}.af-code{flex-wrap:wrap;align-items:flex-end;gap:16px;margin-bottom:24px;display:flex}.af-code .field{width:240px}.af-err{color:var(--bad);flex-basis:100%;font-size:15px}.af-school{margin-top:12px}.af-school-name{border-bottom:1px solid var(--line);margin-bottom:0;padding-bottom:6px;font-size:12px}.af-grid{grid-template-columns:minmax(0,1fr) 300px;align-items:start;gap:40px 48px;display:grid}.af-grid>section{grid-column:1;min-width:0}.af-aside{background:var(--surface);border:1px solid var(--line);flex-direction:column;grid-area:1/2/span 3;gap:12px;padding:24px;display:flex;position:sticky;top:24px}.af-h3{font-size:22px}.af-aside-sub{color:var(--muted);font-size:15px}.af-aside .af-code{flex-direction:column;align-items:stretch;margin-bottom:0}.af-aside .af-code .field{width:100%}.af-aside .af-code .btn{align-self:flex-start}.af-tools{flex-wrap:wrap;align-items:center;gap:8px 24px;margin-bottom:8px;display:flex}.af-search{flex:0 380px}.af-shown{color:var(--muted);font-size:14px}@media (width<=860px){.af-grid{grid-template-columns:minmax(0,1fr);row-gap:28px}.af-aside{grid-area:auto/1;position:static}.af-mine{order:1}.af-aside{order:2}.af-find{order:3}.af-built{order:4}.af-search{flex:100%}}.af-built-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-end;gap:24px;padding-bottom:12px;display:flex}.af-built-head .af-none{padding-bottom:0}.af-actions{flex:none;gap:8px;display:flex}.af-row>.btn{white-space:nowrap;flex:none}.ca{gap:28px}@media (width<=860px){.ca{margin:0}}.ca-head{border-bottom:1px solid var(--rule);justify-content:space-between;align-items:flex-end;gap:32px;padding-bottom:16px;display:flex}.ca-title{flex-direction:column;gap:4px;min-width:0;display:flex}.ca-sub{font:19px/1.4 var(--serif);color:var(--muted);margin-top:4px!important}.ca-counts{text-align:right;flex:none;gap:24px;margin:0;display:flex}.ca-counts>div{flex-direction:column;display:flex}.ca-counts dd{font:36px/1 var(--serif);order:0;margin:0}.ca-counts dt{color:var(--muted);order:1;font-size:13px}.ca-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.ca-grp{background:var(--surface);border:1px solid var(--line);flex-direction:column;gap:6px;min-width:0;padding:20px 24px;display:flex}.ca-grp.here{border:2px solid var(--accent);padding:19px 23px}.ca-grp.here>.eb{color:var(--accent)}.ca-grp-h{font-size:24px;margin-bottom:6px!important}.ca-skills{margin:0;padding:0;list-style:none}.ca-sk{font:18px/1.3 var(--serif);align-items:center;gap:10px;min-height:44px;padding:6px 0;text-decoration:none;display:flex;color:var(--text)!important}.ca-sk>svg{flex:none}.ca-sk:hover>span:first-of-type{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.ca-sk.next{font-style:italic;color:var(--accent)!important}.ca-wip{font:12px/1 var(--sans);color:var(--faint);white-space:nowrap;margin-left:auto;font-style:normal}.ca-pl{font:18px/1.3 var(--serif);min-height:44px;color:var(--muted);align-items:center;gap:10px;padding:6px 0;display:flex}.ca-pl-mark{box-sizing:border-box;border:1.5px dashed var(--faint);border-radius:50%;flex:none;width:16px;height:16px}.ca-more{min-height:44px;color:var(--muted);font:14px/1 var(--sans);cursor:pointer;text-align:left;background:0 0;border:0;align-self:flex-start;margin:-12px 0;padding:0}.ca-more:hover{color:var(--text);text-decoration:underline}.ca-go{align-self:flex-start;margin-top:10px}.ca-foot{border-top:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:12px 28px;padding-top:16px;display:flex}.ca-foot>a{align-items:center;min-height:44px;display:inline-flex}.page.cl{gap:28px;max-width:none;padding:0 8px}.cl-head{border-top:1px solid var(--rule);flex-direction:column;gap:8px;padding-top:16px;display:flex}.cl-sub{font:20px/1.4 var(--serif);color:var(--soft);max-width:640px}.cl-list{margin:0;padding:0;list-style:none}.cl-heading{border-bottom:1px solid var(--line);padding:20px 0 8px}.cl-row{border-bottom:1px solid var(--line);grid-template-columns:40px minmax(0,1fr) 120px;align-items:center;gap:16px;padding:14px 0;display:grid}.cl-row.next{background:var(--surface)}.cl-mark{text-align:left}.cl-mark.good{color:var(--good)}.cl-mark.num{color:var(--faint);font:italic 20px/1 var(--serif)}.cl-mark.num.next{color:var(--accent)}.cl-name{font:20px/1.3 var(--serif);text-decoration:none;color:var(--text)!important}.cl-name.todo{color:var(--soft)!important}.cl-name:hover{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.cl-next{font:600 12px/1 var(--sans);color:var(--accent);margin-left:8px}.cl-level{color:var(--faint);font-size:13px}.cl-level.l1,.cl-level.l2,.cl-level.l3{color:var(--muted)}.cl-level.l4{color:var(--good)}.cl-row.planned .cl-mark{color:var(--faint)}.cl-row.planned .cl-name{color:var(--muted)!important}.cl-row.planned .cl-name:hover{text-decoration:none}.cl-go{justify-self:stretch;min-height:44px!important}.cl .toast{padding:6px 20px;transform:translate(-30%)}.cl .toast>span{flex:auto}.cl .toast>button{flex:none}.cl-actions{flex-wrap:wrap;align-items:center;gap:16px 28px;display:flex}.cl-actions>a:not(.btn){align-items:center;min-height:44px;display:inline-flex}.bs{background:var(--bg);flex-direction:column;min-height:100vh;display:flex}.bs-head{border-bottom:1px solid var(--rule);flex-wrap:wrap;align-items:center;gap:16px;padding:20px 40px;display:flex}.bs-brand{font:500 26px/1 var(--serif);align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--text)!important}.bs-title{flex:0 auto;align-items:center;gap:12px;min-width:0;margin-left:auto;display:flex}.bs-name{font:22px/1.2 var(--serif);color:var(--text);text-align:right;background:0 0;border:0;border-bottom:1px solid #0000;width:320px;max-width:100%;min-height:44px;padding:6px 2px}.bs-name:hover,.bs-name:focus{border-bottom-color:var(--rule);outline:none}.bs-name:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.bs-name[aria-invalid=true]{border-bottom-color:var(--bad)}.bs-name::placeholder{color:var(--faint)}.bs-state{color:var(--muted);white-space:nowrap;text-align:right;min-width:52px;font-size:13px}.bs-body{flex:1;min-height:0;display:flex}.bs-aside{box-sizing:border-box;flex:0 0 340px;align-self:flex-start;max-height:100vh;padding:24px;position:sticky;top:0;overflow:auto}.bs-main{border-left:1px solid var(--line);flex-direction:column;flex:1;gap:8px;min-width:0;padding:24px 40px 64px;display:flex}.bs-msg{flex-direction:column;align-items:flex-start;gap:16px;padding:40px;display:flex}.bs-err{color:var(--bad);font-size:15px}.bs-meta{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:24px;margin-bottom:20px;display:grid}.bs-desc textarea{resize:vertical;font-size:17px}.bs-opt{color:var(--faint)}.bs-list-head{justify-content:space-between;align-items:center;gap:16px;display:flex}.bs-empty{border-top:1px solid var(--line);color:var(--muted);flex-direction:column;align-items:flex-start;gap:6px;padding:24px 0;display:flex}.bs-empty p:first-child{font:22px/1.3 var(--serif);color:var(--text)}.bs-tree{flex-direction:column;gap:12px;display:flex}.bs-tree input[type=search]{font-size:17px}.bs-tree-list,.bs-tree-list ul{margin:0;padding:0;list-style:none}.bs-tree-list ul .bs-haefni{padding-left:16px}.bs-tree-list ul ul .bs-t{padding-left:32px}.bs-t{min-height:44px;font:16px/1.3 var(--serif);color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;width:100%;padding:6px 0;display:flex}.bs-t:hover{color:var(--accent)}.bs-svid{font-weight:600}.bs-skill input{accent-color:var(--accent);flex:none;width:18px;height:18px;margin:0}.bs-n{font:600 12px/1 var(--sans);color:var(--accent);margin-left:auto}.bs-wip{font:12px/1 var(--sans);color:var(--faint);white-space:nowrap;margin-left:8px}.bs-none{color:var(--muted);font-size:15px}.bs-list{border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.bs-li{border-bottom:1px solid var(--line);font:18px/1.3 var(--serif);background:var(--bg);grid-template-columns:24px 28px minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px;display:grid}.bs-li.warn{background:var(--surface);border-left:3px solid var(--partial);padding-left:9px}.bs-li.heading{background:0 0;padding-top:20px}.bs-li.dragging{opacity:.4}.bs-li.over{box-shadow:inset 0 2px 0 var(--accent)}.bs-handle{width:24px;min-height:44px;color:var(--faint);cursor:grab;font:16px/1 var(--sans);letter-spacing:-2px;background:0 0;border:0;margin:-8px 0;padding:0}.bs-handle:hover,.bs-handle:focus-visible{color:var(--text)}.bs-num{color:var(--muted)}.bs-hmark{color:var(--faint);font:15px/1 var(--serif);text-align:center}.bs-heading{font:500 12px/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--text);border:0;border-bottom:1px solid var(--line);background:0 0;width:100%;min-height:40px;padding:0 2px}.bs-heading:focus{border-bottom-color:var(--rule);outline:none}.bs-heading:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.bs-heading::placeholder{color:var(--faint)}.bs-skill-name{flex-direction:column;gap:2px;min-width:0;display:flex}.bs-warn{font:13px/1.4 var(--sans);color:var(--partial)}.linkbtn.bs-fix{font:inherit;min-height:0;padding:0;position:relative}.linkbtn.bs-fix:after{content:"";position:absolute;inset:-12px -4px}.bs-row-actions{gap:4px;display:flex}.bs-icon{width:36px;min-height:44px;color:var(--faint);cursor:pointer;font:15px/1 var(--sans);background:0 0;border:0;margin:-8px 0}.bs-icon:hover{color:var(--text)}.bs-icon:disabled{opacity:.3;cursor:default}.bs-phone-only,.btn.bs-phone-only,.bs-switch{display:none}@media (width<=860px){.af-row{flex-wrap:wrap}.af-main{flex-basis:100%}.af-prog{flex:auto;align-items:flex-start}.af-built-head{flex-direction:column;align-items:flex-start}.af-actions{flex-wrap:wrap}.af-code .field{flex:160px;width:auto}.ca-head{flex-direction:column;align-items:flex-start;gap:16px}.ca-head h1{font-size:36px!important}.ca-counts{text-align:left}.ca-counts dd{font-size:30px}.ca-grid{grid-template-columns:minmax(0,1fr);gap:12px}.page.cl{padding:0}.cl .toast{width:max-content;max-width:calc(100vw - 32px);transform:translate(-50%)}.cl-head h1{font-size:38px!important}.cl-sub{font-size:18px}.cl-row{grid-template-columns:28px minmax(0,1fr) auto;gap:12px}.cl-name{font-size:18px}.bs-head{gap:8px 12px;padding:12px 16px}.bs-head>.eb{display:none}.bs-title{flex-wrap:wrap;flex:100%;margin-left:0}.bs-name{text-align:left;border-bottom-color:var(--line);flex:100%;width:auto}.bs-state{text-align:left;margin-right:auto}.bs-switch{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;display:grid}.bs-switch button{min-height:48px;font:600 15px/1 var(--sans);color:var(--muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000}.bs-switch button.on{color:var(--text);border-bottom-color:var(--accent)}.bs-body{flex-direction:column}.bs-aside{border-right:0;flex:none;max-height:none;padding:16px;position:static}.bs-main{padding:16px 16px 48px}.bs-off-phone{display:none}.bs-meta{grid-template-columns:minmax(0,1fr);gap:12px}.bs-phone-only,.btn.bs-phone-only{justify-content:center;align-items:center;display:inline-flex}.bs-main{border-left:0}.bs-handle{display:none}.bs-li{grid-template-columns:24px minmax(0,1fr) auto;padding:10px 4px;font-size:17px}.bs-li.warn{padding-left:1px}.bs-icon{width:40px}.bs .toast{bottom:16px}}.hf-segs>span{background:var(--line)}.hf-segs>.m-vel{background:var(--good)}.hf-segs>.m-vantar{background:var(--partial)}.hf-segs>.m-rangt,.hf-segs>.m-wrong{background:var(--bad)}.hf-segs>.m-pending{background:var(--faint)}.hf-segs>.m-revealed{background:repeating-linear-gradient(90deg, var(--faint) 0 3px, transparent 3px 6px)}.lesson{--lesson-top:0px;--bar-h:77px;position:relative}.lesson-main{container:lesson/inline-size}.lesson-cols{min-height:calc(100vh - var(--lesson-top) - var(--bar-h));display:flex}.lesson-text{flex-direction:column;flex:0 0 56%;gap:18px;min-width:0;padding:40px 56px 120px;display:flex}.ltitle{font-size:42px}.lh2{scroll-margin-top:calc(var(--lesson-top) + 24px);margin-top:30px;font-size:30px}.lh3{margin-top:14px;font-size:24px}.lp{font:var(--reading-size)/1.6 var(--serif);color:var(--soft)}.ldisplay{font-size:var(--reading-size);color:var(--text);padding:2px 0;overflow:auto hidden}.ldisplay .katex-display{margin:.4em 0}.ldisplay .ls{padding:0 4px;display:block}.ls{-webkit-box-decoration-break:clone;box-decoration-break:clone;border-radius:2px;padding:2px 0;transition:background-color .18s}.ls.seekable{cursor:pointer}.ls.cur{background:var(--highlight);color:var(--text);box-shadow:-4px 0 0 var(--highlight), 4px 0 0 var(--highlight)}.lesson-text.banded{isolation:isolate;position:relative}.lesson-text.banded .ls.cur{box-shadow:none;background:0 0}.lband{z-index:-1;pointer-events:none;width:0;height:0;position:absolute;inset:0 auto auto 0}.lband>div{background:color-mix(in srgb, var(--accent) 14%, transparent);position:absolute}.lband>div:first-child{border-top-left-radius:2px;border-top-right-radius:2px}.lband>div:last-child{border-bottom-right-radius:2px;border-bottom-left-radius:2px}.ls.ink>*{color:color-mix(in srgb, var(--text) 52%, var(--bg));transition:color .12s linear}.ls.ink>.said{color:var(--text)}.ls.ink>.lm.now{color:var(--accent)}.lm{white-space:nowrap}@media (prefers-reduced-motion:reduce){.ls,.ls.ink>*{transition:none}}.term{font:inherit;color:inherit;cursor:pointer;-webkit-text-decoration:underline dotted color-mix(in srgb, var(--accent) 75%, transparent);text-decoration:underline dotted color-mix(in srgb, var(--accent) 75%, transparent);text-underline-offset:.2em;background:0 0;border:0;margin:-6px 0;padding:6px 0;text-decoration-thickness:1.5px}.term:hover{-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent)}button.term:focus-visible{outline-offset:0}.lresume{font:14px/1.4 var(--sans);color:var(--muted);flex-wrap:wrap;align-items:center;gap:4px 12px;display:flex}.lstage{border-left:1px solid var(--line);background:var(--surface);flex:auto;min-width:0}.lstage-inner{top:var(--lesson-top);--visual-max-h:calc(100vh - var(--lesson-top) - var(--bar-h) - 270px);flex-direction:column;gap:14px;padding:32px;display:flex;position:sticky}.lstage-visual{animation:.26s ease-out both lstage-in}@keyframes lstage-in{0%{opacity:0}to{opacity:1}}@media (prefers-reduced-motion:reduce){.lstage-visual{animation:none}}.lstage-collapse{display:none}.btn.lstage-resume{align-self:flex-start}.lstage-controls{align-items:center;gap:2px;display:flex}.lstage-state{min-width:0;font:14px/1.3 var(--sans);color:var(--muted);flex:1}.lstage-btn{min-width:44px;min-height:44px;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:2px;justify-content:center;align-items:center;display:inline-flex}.lstage-btn:hover:not(:disabled){background:var(--well)}.lstage-btn:disabled{color:var(--faint);opacity:.6;cursor:default}.lstage-cues{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}.cue{border:0;border-top:3px solid var(--line);min-height:44px;font:13px/1.3 var(--sans);color:var(--muted);text-align:left;cursor:pointer;background:0 0;flex-direction:column;align-items:flex-start;gap:2px;padding:8px 10px;transition:background-color .2s,border-color .2s,color .2s;display:flex}.cue b{font:600 12px var(--sans);color:var(--faint)}.cue:hover{background:var(--well)}.cue.past{border-top-color:color-mix(in srgb, var(--accent) 35%, var(--line))}.cue.on{background:color-mix(in srgb, var(--accent) 14%, transparent);color:var(--text);border-top-color:var(--accent)}.lstage-note{color:var(--muted);font-size:13px}.lbar-wrap{z-index:25;position:sticky;bottom:0;container:lessonbar/inline-size}.lbar{border-top:1px solid var(--rule);background:var(--bg);align-items:center;gap:12px;padding:14px 40px;display:flex}.btn.lbar-play{flex:none;width:48px;padding:0}.lbar-play.buffering svg{animation:1s ease-in-out infinite lbar-pulse}@keyframes lbar-pulse{50%{opacity:.35}}.lbar-icon{min-width:44px;min-height:44px;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:2px;flex:none;justify-content:center;align-items:center;display:inline-flex;position:relative}.lbar-icon:hover{background:var(--well)}.lbar-ten{font:700 8px/1 var(--sans);position:absolute;top:50%;left:50%;transform:translate(-50%,-40%)}.lbar-time{color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;margin:0 8px;font-size:14px}.lbar-note{color:var(--muted);font-size:14px}.lbar-track{cursor:pointer;touch-action:none;flex:auto;align-items:center;min-width:80px;height:44px;display:flex}.lbar-rail{background:var(--line);width:100%;height:3px;position:relative}.lbar-track:hover .lbar-rail,.lbar-track:focus-visible .lbar-rail{height:5px}.lbar-fill{background:var(--accent);width:0;height:100%}.lbar-mark{background:var(--text);width:2px;height:11px;position:absolute;top:50%;transform:translate(-1px,-50%)}.lbar-speed{cursor:pointer;min-width:44px;min-height:44px;font:14px var(--sans);color:var(--text);font-variant-numeric:tabular-nums;background:0 0;border:0;flex:none}.lbar-speed:hover{background:var(--well)}.btn.lbar-next{flex:none;min-height:44px}@media (prefers-reduced-motion:reduce){.lbar-play.buffering svg{opacity:.5;animation:none}}.follow-pill{left:50%;bottom:calc(var(--bar-h) + 16px);z-index:30;cursor:pointer;background:var(--text);min-height:44px;color:var(--bg);font:600 14px var(--sans);border:0;border-radius:999px;padding:0 20px;position:fixed;transform:translate(-50%);box-shadow:0 10px 24px -12px #00000080}.term-pop{z-index:40;background:var(--bg);border:1px solid var(--rule);flex-direction:column;gap:8px;width:min(380px,100vw - 32px);padding:14px 16px 8px 20px;display:flex;position:absolute;box-shadow:0 14px 32px -18px #00000073}.term-pop:focus{outline:none}.term-pop.sheet{z-index:61;width:auto;max-height:75vh;padding:18px 16px calc(12px + env(safe-area-inset-bottom));border-width:1px 0 0;position:fixed;bottom:0;left:0;right:0;overflow:auto}.term-scrim{z-index:60;background:#0000004d;position:fixed;inset:0}.term-head{align-items:flex-start;gap:2px;display:flex}.term-head>div{flex:1;min-width:0;padding-top:6px}.term-word{font:500 26px/1.15 var(--serif)}.term-meta{font:13px/1.6 var(--sans);color:var(--muted);gap:12px;display:flex}.term-close{min-width:44px;min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;display:inline-flex}.term-def{font:18px/1.5 var(--serif);color:var(--soft)}.term-ex{font:italic 16px/1.5 var(--serif);color:var(--muted)}.term-link{min-height:44px;font:600 14px var(--sans);align-self:flex-start;align-items:center;display:inline-flex}.lend{margin-top:40px}.lend-card{border-top:1px solid var(--rule);flex-direction:column;gap:16px;padding-top:20px;display:flex}.lend-card h2{font-size:30px}.lend-card p{font:var(--reading-size)/1.5 var(--serif);color:var(--soft)}.lend-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.lend-back{min-height:44px;font:600 15px var(--sans);align-items:center;margin-left:8px;display:inline-flex}.lesson-part{color:var(--muted);white-space:nowrap;padding-right:16px;font-size:14px}.lesson-skel{min-height:calc(100vh - 56px);display:flex}.lesson-skel .lesson-text{gap:14px}.lesson-skel .lstage{padding:32px}.lesson-msg{flex-direction:column;gap:16px;max-width:640px;padding:64px 56px;display:flex}.lesson-msg h1{font-size:36px}.lsample{flex-direction:column;gap:16px;min-width:0;margin:0;display:flex}.lsample-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.lsample-visual{background:var(--surface);border:1px solid var(--line);padding:16px}.lsample-visual .lg-plot{background:var(--surface);border:0}.lsample-visual .MafsView{--mafs-bg:var(--surface)}.lsample-text{flex-direction:column;gap:12px;display:flex}.lsample-text .lp{font:20px/1.55 var(--serif);color:var(--text)}.lsample-text .lh2{margin-top:0;font-size:24px}@container lesson (width<=860px){.lesson-cols{flex-direction:column;min-height:0}.lesson-text{flex:none;gap:16px;padding:20px 16px 48px}.ltitle{font-size:32px}.lh2{margin-top:20px;font-size:26px}.lstage{top:var(--lesson-top);z-index:15;border-left:0;border-bottom:1px solid var(--line);order:-1;position:sticky}.lstage-inner{--visual-max-h:calc(40vh - 104px);gap:4px;padding:4px 16px 6px;position:static}.lstage-collapse{min-height:44px;color:var(--muted);font:500 12px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;cursor:pointer;background:0 0;border:0;justify-content:space-between;align-items:center;padding:0;display:flex}.lstage .lg-hint{white-space:nowrap;pointer-events:none;min-height:44px;position:absolute;top:4px;left:50%;transform:translate(-50%)}.lstage .lg-plot{aspect-ratio:3/2;width:min(100%, calc(var(--visual-max-h,100vh) * 3 / 2))}.lstage-cues,.lstage-note{display:none}.lstage-controls{min-height:44px}.lstage-state{font-size:13px}.lend{margin-top:24px}}@container lessonbar (width<=860px){.lbar{padding:4px 12px calc(8px + env(safe-area-inset-bottom));flex-wrap:wrap;gap:4px}.lbar-track{flex-basis:100%;order:-1;height:32px}.lbar-time{text-overflow:ellipsis;flex:1;min-width:0;margin:0 4px;font-size:13px;overflow:hidden}.btn.lbar-next{min-height:44px;padding:0 14px}}@container lessonbar (width<=480px){.lbar-back10{display:none}}@media (width<=860px){.lesson-msg{padding:40px 16px}.lesson-skel{flex-direction:column-reverse;justify-content:flex-end}.lesson-skel .lstage{border-left:0;padding:16px}}.my{flex-direction:column;gap:24px;display:flex}.my-bar{z-index:2;background:var(--bg);flex-wrap:wrap;gap:8px;padding:4px 0;display:flex;position:sticky;top:0}.my-toggle{border:1px solid var(--line);min-height:44px;color:var(--muted);font:14px/1 var(--sans);cursor:pointer;background:0 0;align-items:center;gap:8px;padding:0 14px;display:inline-flex}.my-toggle:before{content:"";border:1px solid;border-radius:2px;flex:none;width:14px;height:14px}.my-toggle.on{color:var(--text);border-color:var(--rule)}.my-toggle.on:before{background:var(--accent);border-color:var(--accent)}.my-toggle:hover{color:var(--text)}.my-lesson{flex-direction:column;gap:14px;display:flex}.my-h2{font:28px/1.2 var(--serif)}.my-summary{color:var(--soft);font-size:14px}.my-visual{border-top:1px solid var(--line);flex-direction:column;gap:6px;padding-top:14px;display:flex}.my-h3{font:500 15px/1.4 var(--sans)}.my-desc{font:16px/1.5 var(--serif);color:var(--soft);max-width:70ch}.my-cards{grid-template-columns:repeat(auto-fill,minmax(0,475px));gap:16px;margin-top:8px;display:grid}.my-cards.phone{grid-template-columns:minmax(0,1fr)}.my-card[data-theme=light]{--bg:#f4efe6;--surface:#f8f4ec;--well:#ebe3d5;--text:#1f1b16;--soft:#3b342c;--muted:#6b6257;--faint:#8a8073;--line:#d9d0c1;--rule:#1f1b16;--accent:#b8401f;--accent-hover:#8e2f15;--accent-text:#fff8f0;--good:#2f6b4f;--partial:#8a5a12;--bad:#b8401f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}.my-card[data-theme=dark]{--bg:#1b1814;--surface:#221e19;--well:#2a251f;--text:#ece4d5;--soft:#d6ccbb;--muted:#a59b8c;--faint:#7f766a;--line:#3a342c;--rule:#8c8273;--accent:#e57a55;--accent-hover:#f09a7a;--accent-text:#1b1814;--good:#8fbf9a;--partial:#d9a95a;--bad:#e57a55;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}.my-card{--highlight:color-mix(in srgb, var(--accent) 18%, transparent);background:var(--bg);color:var(--text);border:1px solid var(--line);border-left:3px solid var(--line);flex-direction:column;gap:10px;min-width:0;padding:14px 16px;display:flex}.my-card.flagged{border-left-color:var(--bad)}.my-card *,.my-card :before,.my-card :after{transition:none!important;animation:none!important}.my-card-head{flex-wrap:wrap;align-items:baseline;gap:4px 10px;display:flex}.my-card-head .eb{color:var(--muted)}.my-step{color:var(--soft);font-size:13px}.my-label{color:var(--muted);font-size:14px}.my-frames{flex-wrap:wrap;align-items:flex-start;gap:16px;display:flex}.my-frame{flex-direction:column;gap:4px;min-width:0;display:flex}.my-laptop{width:440px;max-width:100%}.my-phone{border:1px dashed var(--line);width:360px;max-width:100%;padding:0 16px}.my-phone .lg-plot{aspect-ratio:3/2;width:100%}.my-laptop .lg-plot{width:100%}.my-frame-label{font:500 11px/1.4 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}.my-say{flex-direction:column;gap:6px;display:flex}.my-sentence{font:18px/1.5 var(--serif)}.my-sid{font:500 12px/1 var(--sans);color:var(--muted);white-space:nowrap}.my-mark{background:var(--highlight);color:inherit;box-shadow:inset 0 -2px 0 var(--accent);padding:0 1px}.my-cue-start{color:var(--accent);margin-right:4px}.my-flags{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.my-flags li{color:var(--bad);border-left:2px solid var(--bad);padding-left:12px;font-size:14px}@media (width<=860px){.my-cards{grid-template-columns:minmax(0,1fr)}.my-card{padding:12px}.my-laptop,.my-phone{width:100%}.my-phone{border:0;padding:0}}.my .mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.landing{flex-direction:column;gap:48px;max-width:1440px;min-height:100vh;margin:0 auto;padding:40px 64px 56px;display:flex}.landing-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.wordmark{font:500 30px/1 var(--serif);text-decoration:none;color:var(--text)!important}.landing-auth{align-items:center;gap:20px;display:flex}.landing-head .signin{font:600 15px/1 var(--sans);align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--text)!important}.landing-head .signin:hover{text-decoration:underline}.landing-hero{flex-wrap:wrap;align-items:flex-start;gap:56px;display:flex}.landing-copy{flex-direction:column;flex:480px;gap:28px;min-width:0;display:flex}.landing-copy h1{font-size:84px;line-height:1}.landing-copy h1 em{color:var(--accent)}.landing-lede{font:22px/1.5 var(--serif);color:var(--soft);max-width:520px}.landing-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.landing-actions .landing-cta{min-height:56px;padding:0 36px;font-size:17px}.landing-closed{font:italic 20px/1.4 var(--serif);color:var(--soft);max-width:460px}.landing-age{color:var(--muted);font-size:14px}.landing-sample{border-top:1px solid var(--rule);flex-direction:column;flex:420px;gap:16px;min-width:0;margin:0;padding-top:16px;display:flex}.landing-sample-skel{flex-direction:column;gap:16px;display:flex}.landing-points{grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;display:grid}.landing-points section{border-top:1px solid var(--rule);flex-direction:column;gap:8px;padding-top:16px;display:flex}.landing-points h2{font-size:26px}.landing-points p{color:var(--soft)}.landing-foot{border-top:1px solid var(--line);flex-wrap:wrap;gap:24px;padding-top:8px;font-size:14px;display:flex}.landing-foot a{align-items:center;min-height:44px;display:inline-flex;color:var(--muted)!important}.landing-foot a:hover{color:var(--text)!important}.landing-codes{font:500 13px/1.6 var(--sans);letter-spacing:.04em;color:var(--muted)}.course-banner{border-top:1px solid var(--rule);border-bottom:1px solid var(--line);flex-direction:column;gap:4px;padding:14px 0;display:flex}.course-banner p{font:20px/1.35 var(--serif)}.course-banner em{color:var(--accent)}@media (width<=860px){.landing{gap:36px;padding:20px 16px 40px}.landing-hero{gap:36px}.landing-copy{flex-basis:100%;gap:20px}.landing-copy h1{font-size:52px}.landing-lede{font-size:20px}.landing-sample{flex-basis:100%}.landing-points{grid-template-columns:1fr;gap:24px}.landing-actions .btn{flex:140px}.landing-actions .landing-cta{flex-basis:100%}.landing-auth .btn{display:none}}.auth{min-height:100vh;padding:0 24px 64px}.auth-col{flex-direction:column;gap:36px;max-width:420px;margin:0 auto;padding-top:150px;display:flex}.auth-brand{flex-direction:column;gap:8px;display:flex}.auth-brand h1{font-size:64px}.auth-brand h1 a{text-decoration:none;color:var(--text)!important}.auth-brand p{font:italic 20px/1.4 var(--serif);color:var(--muted)}.auth-form{flex-direction:column;gap:18px;display:flex}.auth-form .btn.p{width:100%;margin-top:8px}.auth-links{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:0 16px;margin:-11px 0;font-size:15px;display:flex}.auth-links>a,.auth-links>span{align-items:center;gap:.3em;min-height:44px;display:inline-flex}.auth-note{color:var(--muted);font-size:14px}.auth-note a{margin:-12px 0;padding:12px 0;display:inline-block}.auth-lead{font:20px/1.45 var(--serif);color:var(--soft)}.form-error{color:var(--bad);border-left:2px solid var(--bad);padding:2px 0 2px 12px;font-size:15px}.form-ok{color:var(--good);border-left:2px solid var(--good);padding:2px 0 2px 12px;font-size:15px}.field-hint{color:var(--muted);font-size:13px}.auth-alt{flex-direction:column;gap:18px;display:flex}.auth-alt .btn{width:100%}.auth-or{color:var(--muted);align-items:center;gap:12px;font-size:14px;display:flex}.auth-or:before,.auth-or:after{content:"";border-top:1px solid var(--line);flex:1}.g-mark{flex:none;width:18px;height:18px}.pw-wrap{position:relative}.pw-wrap input{padding-right:64px}.pw-toggle{min-width:56px;min-height:44px;color:var(--muted);font:500 13px/1 var(--sans);cursor:pointer;background:0 0;border:0;position:absolute;bottom:2px;right:0}@media (width<=860px){.auth{padding:0 16px 48px}.auth-col{gap:28px;padding-top:56px}.auth-brand h1{font-size:52px}}.legal{flex-direction:column;gap:48px;max-width:1440px;min-height:100vh;margin:0 auto;padding:40px 64px 56px;display:flex}.legal-col{flex-direction:column;gap:28px;width:100%;max-width:680px;margin:0 auto;display:flex}.legal-col h1{margin-top:-16px;font-size:56px}.legal-lede{font:22px/1.5 var(--serif);color:var(--soft)}.legal-col section{border-top:1px solid var(--rule);flex-direction:column;gap:12px;padding-top:16px;display:flex}.legal-col h2{font-size:26px}.legal-col section p,.legal-col li{font:18px/1.55 var(--serif);color:var(--soft);overflow-wrap:anywhere}.legal-col ul{flex-direction:column;gap:10px;margin:0;padding-left:20px;display:flex}.legal-col b{color:var(--text);font-weight:600}.legal-foot{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:0 16px;font-size:14px;display:flex}.legal-foot a{align-items:center;min-height:44px;display:inline-flex}@media (width<=860px){.legal{gap:32px;padding:20px 16px 40px}.legal-col{gap:24px}.legal-col h1{margin-top:-12px;font-size:40px}.legal-lede{font-size:20px}.legal-col section p,.legal-col li{font-size:17px}}.onb{min-height:100vh;padding:40px 64px}.onb-col{flex-direction:column;gap:32px;max-width:680px;margin:0 auto;padding-top:40px;display:flex}.onb-top{justify-content:space-between;align-items:baseline;gap:16px;display:flex}.onb-top .linkbtn{font:15px/1.5 var(--sans);min-height:0;margin:-11px 0;padding:11px 0}.onb-col h1{font-size:56px}.onb fieldset{border:0;border-top:1px solid var(--rule);min-width:0;margin:0;padding:0}.opt{border-bottom:1px solid var(--line);cursor:pointer;grid-template-columns:32px minmax(0,1fr);align-items:start;gap:4px 16px;padding:22px 4px;display:grid}.opt.on{background:var(--surface)}.opt>input{width:20px;height:20px;accent-color:var(--accent);margin:6px 0 0}.opt-title{font:26px/1.2 var(--serif)}.opt-body{color:var(--muted);flex-direction:column;grid-column:2;gap:12px;min-width:0;display:flex}.opt-body .linkbtn{font:14px/1.5 var(--sans);align-self:flex-start;min-height:0;margin:-11.5px 0;padding:11.5px 0}.picks{flex-wrap:wrap;gap:12px;display:flex}.pick{border:1px solid var(--rule);max-width:100%;min-height:46px;color:var(--text);font:18px/1 var(--serif);align-items:center;gap:8px;padding:0 14px;display:inline-flex;position:relative}.pick>span{white-space:nowrap;text-overflow:ellipsis;min-width:0;overflow:hidden}.pick>svg{flex:none}.pick.unset>span{color:var(--muted)}.pick.off{color:var(--faint);border-color:var(--line)}.pick.off>span{color:var(--faint)}.pick select{opacity:0;cursor:pointer;appearance:none;border:0;width:100%;height:100%;margin:0;font-size:16px;position:absolute;inset:0}.pick select:disabled{cursor:default}@supports (appearance:base-select){.pick select{appearance:base-select}.pick select::picker(select){appearance:base-select}.pick select::picker(select){opacity:1;background:var(--surface);max-height:min(420px,60vh);color:var(--text);border:1px solid var(--rule);scrollbar-width:thin;scrollbar-color:var(--faint) transparent;margin-top:4px;padding:4px 0;box-shadow:0 8px 24px #0000001f}.pick option{min-height:44px;font:17px/1.3 var(--sans);color:var(--text);cursor:pointer;padding:10px 16px}.pick option::checkmark{display:none}.pick option:hover,.pick option:focus-visible{background:var(--well);outline:none}.pick option:checked{color:var(--accent)}.pick option[value=""]{color:var(--muted)}}.pick:has(select:focus-visible){outline:2px solid var(--accent);outline-offset:2px}.pick:not(.off):hover{background:var(--well)}.code-input{font:500 24px/1 var(--sans);letter-spacing:.24em;text-transform:uppercase;color:var(--text);border:0;border-bottom:1px solid var(--rule);background:0 0;border-radius:0;width:220px;max-width:100%;min-height:48px;padding:6px 2px}.code-found{color:var(--text);font:18px/1.4 var(--serif)}.code-found em{color:var(--accent)}.onb-foot{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.onb-foot .spacer{flex:1}.onb-foot .field-hint:empty{margin-right:-12px}.onb-name{flex-direction:column;gap:4px;max-width:420px;display:flex}.speed-row{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:22px 4px 22px 52px;display:flex}.speed-row .opt-title{font-size:22px}@media (width<=860px){.onb{padding:16px 16px 40px}.onb-col{gap:24px;padding-top:8px}.onb-col h1{font-size:40px}.opt{grid-template-columns:28px minmax(0,1fr);gap:4px 12px;padding:18px 4px}.opt-title{font-size:22px}.pick{justify-content:space-between;width:100%}.speed-row{padding-left:44px}.onb-foot .btn.p{flex:auto}}.segs{flex-wrap:wrap;display:inline-flex}.seg{border:1px solid var(--rule);min-width:56px;min-height:44px;color:var(--text);font:600 14px/1 var(--sans);cursor:pointer;background:0 0;border-radius:0;margin-left:-1px;padding:0 6px}.seg:first-child{margin-left:0}.seg:hover{background:var(--well)}.seg[aria-checked=true]{background:var(--text);color:var(--bg)}.seg:focus-visible{z-index:1;position:relative}.settings{justify-content:center;display:flex}.settings-col{flex-direction:column;gap:8px;width:100%;max-width:640px;display:flex}.settings-col h1{margin-bottom:16px;font-size:44px}.settings-col h2{margin-top:24px;font-size:24px}.settings-col h2:first-of-type{margin-top:12px}.srow{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 16px;min-height:57px;padding:6px 0;display:flex}.srow:has(>.segs){padding:14px 0}.srow>.lbl{flex-direction:column;gap:2px;min-width:0;display:flex}.srow>.lbl small{color:var(--muted);font-size:13px}.srow .val{font:18px/1.3 var(--serif);overflow-wrap:anywhere}.srow .val-wrap{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;min-width:0;display:flex}.srow .linkbtn,.srow a.act{align-items:center;min-height:44px;font-size:16px;display:inline-flex}.srow .danger{color:var(--bad)}.sedit{border-bottom:1px solid var(--line);flex-direction:column;gap:14px;padding:16px 0 20px;display:flex}.sedit .row-btns{flex-wrap:wrap;gap:12px;display:flex}.saved{font:500 13px/1 var(--sans);color:var(--muted);min-height:18px}@media (width<=860px){.settings-col h1{margin-bottom:8px;font-size:40px}}.gl{flex-direction:column;gap:20px;max-width:1100px;display:flex}.gl-head{border-bottom:1px solid var(--rule);flex-wrap:wrap;align-items:baseline;gap:20px;padding-bottom:12px;display:flex}.gl-head h1{font-size:44px}.gl-head .count{color:var(--muted)}.gl-tools{flex-wrap:wrap;align-items:flex-end;gap:16px 24px;display:flex}.gl-search{flex:320px;max-width:480px;position:relative}.gl-search input{width:100%;min-height:48px;font:20px/1.3 var(--serif);color:var(--text);border:0;border-bottom:1px solid var(--rule);background:0 0;border-radius:0;padding:6px 40px 6px 2px}.gl-search input::placeholder{color:var(--faint);font-style:italic}.gl-search .clear{min-width:44px;min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:0;font-size:20px;position:absolute;bottom:2px;right:0}.gl-svid{flex-wrap:wrap;gap:4px 16px;display:flex}.chip{cursor:pointer;min-height:44px;font:500 14px/1 var(--sans);color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:0 2px}.chip[aria-pressed=true]{color:var(--text);border-bottom-color:var(--accent)}.gl-letters{font:18px/1 var(--serif);flex-wrap:nowrap;align-items:center;gap:0;margin:-10px 0 -10px -3px;display:flex}.gl-letters button{cursor:pointer;min-height:44px;font:inherit;color:var(--muted);background:0 0;border:0;flex:none;padding:0 2.5px}.gl-letters button:hover:not(:disabled){color:var(--text)}.gl-letters button:disabled{color:var(--faint);opacity:.45;cursor:default}.gl-letters button[aria-pressed=true]{color:var(--accent);padding:0 7px;font-style:italic}.gl-list{columns:2;column-gap:48px}.e{border-bottom:1px solid var(--line);break-inside:avoid;flex-direction:column;gap:4px;padding:16px 0;text-decoration:none;display:flex;color:inherit!important}.e:hover b{color:var(--accent)}.e b{font:600 22px/1.2 var(--serif)}.e i{font:italic 15px var(--serif);color:var(--muted)}.e .def{font:18px/1.5 var(--serif);color:var(--soft)}.gl-empty{font:20px/1.5 var(--serif);color:var(--soft);flex-direction:column;gap:8px;padding:24px 0;display:flex}.gterm{flex-direction:column;gap:28px;max-width:720px;display:flex}.gterm-back{align-self:flex-start;align-items:center;gap:6px;min-height:44px;font-size:15px;display:inline-flex}.gterm-head{border-bottom:1px solid var(--rule);flex-direction:column;gap:6px;padding-bottom:16px;display:flex}.gterm-head .hw{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.gterm-head h1{font-size:56px}.gterm-head .gram{font:italic 18px var(--serif);color:var(--muted)}.gterm-def{font:var(--reading-size)/1.55 var(--serif)}.gterm-sec{flex-direction:column;gap:10px;display:flex}.gterm-ex{font:19px/1.55 var(--serif);color:var(--soft);border-left:2px solid var(--line);padding-left:16px}.gterm details summary{cursor:pointer;align-items:center;gap:8px;min-height:44px;list-style:none;display:flex}.gterm details summary::-webkit-details-marker{display:none}.gterm details summary:before{content:"";border-bottom:1.5px solid;border-right:1.5px solid;width:6px;height:6px;margin:0 4px 0 2px;transition:transform .15s;transform:rotate(-45deg)}.gterm details[open] summary:before{transform:rotate(45deg)}@media (prefers-reduced-motion:reduce){.gterm details summary:before{transition:none}}.beyging{border-collapse:collapse;font:18px/1.4 var(--serif);width:100%;max-width:480px}.beyging th,.beyging td{text-align:left;border-bottom:1px solid var(--line);padding:8px 16px 8px 0}.beyging th{font:500 12px/1.4 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.gterm-skills{flex-direction:column;display:flex}.gterm-skills a{border-bottom:1px solid var(--line);min-height:48px;font:19px/1.3 var(--serif);align-items:center;gap:12px;padding:8px 0;text-decoration:none;display:flex;color:var(--text)!important}.gterm-skills a:hover span.n{color:var(--accent)}.gterm-skills .band{font:500 12px/1 var(--sans);color:var(--muted);letter-spacing:.06em;margin-left:auto}.gterm-src{color:var(--muted);font-size:14px}@media (width<=860px){.gl-head h1{font-size:40px}.gl-list{columns:1}.gl-letters button:disabled{display:none}.gl-letters{flex-wrap:wrap;font-size:19px}.gl-letters button{padding:0 4px}.gl-svid{gap:0 14px}.gl-search{flex-basis:100%;max-width:none}.gterm-head h1{font-size:44px}}.nf{flex-direction:column;gap:24px;max-width:560px;padding-top:40px;display:flex}.nf h1{font-size:56px}.nf h1 em{color:var(--accent)}.nf p{font:20px/1.5 var(--serif);color:var(--soft)}.nf .acts{flex-wrap:wrap;gap:12px;display:flex}@media (width<=860px){.nf{padding-top:8px}.nf h1{font-size:40px}}.landing-copy .course-banner{max-width:520px}.px-page{background:var(--bg);flex-direction:column;min-height:100vh;display:flex}.px-main{flex-direction:column;flex:1;display:flex}.px-head{border-bottom:1px solid var(--line);background:var(--bg);z-index:20;align-items:center;gap:20px;min-height:60px;padding:8px 40px;display:flex;position:sticky;top:0}.px-back{white-space:nowrap;text-overflow:ellipsis;align-items:center;max-width:40vw;min-height:44px;font-size:15px;display:inline-flex;overflow:hidden}.px-tonext{color:var(--muted);align-items:center;gap:8px;font-size:13px;display:inline-flex}.px-dots{gap:4px;display:inline-flex}.px-dots>span{border:1px solid var(--muted);border-radius:50%;width:8px;height:8px}.px-dots>.full{background:var(--text);border-color:var(--text)}.px-dots>.half{background:linear-gradient(90deg, var(--text) 50%, transparent 50%);border-color:var(--text)}.px-pos{align-items:center;gap:12px;margin-left:auto;display:inline-flex}.px-segs{gap:3px;width:200px;display:flex}.px-segs>span{background:var(--line);flex:1;height:6px}.px-segs>.m-vel{background:var(--good)}.px-segs>.m-vantar{background:var(--partial)}.px-segs>.m-rangt,.px-segs>.m-wrong{background:var(--bad)}.px-segs>.m-pending{background:var(--faint)}.px-segs>.m-revealed{background:repeating-linear-gradient(90deg, var(--faint) 0 3px, transparent 3px 6px)}.px-segs>.m-now{background:var(--text)}.px-pos-text{color:var(--muted);white-space:nowrap;font-size:14px}.px-pos-serif{font:20px var(--serif);white-space:nowrap;margin-left:auto}.px-answering{flex:1;gap:48px;padding:40px;display:flex}.px-answering.single{flex-direction:column;gap:20px;width:100%;max-width:728px;margin:0 auto;padding:56px 24px}.px-problem,.px-problem-full{flex-direction:column;flex:1;gap:18px;min-width:0;display:flex}.px-answering.single .px-problem,.px-answering.single .px-problem-full{flex:none;gap:20px}.px-answer-col{border-left:1px solid var(--line);flex-direction:column;flex:1;gap:20px;min-width:0;padding-left:48px;display:flex}.px-answering.single .px-answer-col{border-left:0;flex:none;padding-left:0}.px-prompt{font-family:var(--serif);flex-direction:column;gap:12px;line-height:1.5;display:flex}.px-prompt.muted-prompt{color:var(--muted);font-size:22px;line-height:1.45}.px-summary,.px-fold{display:none}.px-listen{align-self:flex-start;min-height:44px}.px-visual{width:100%;max-width:440px}.px-visual .lg-plot{background:var(--surface);width:100%}.px-visual .linugraf .MafsView{--mafs-bg:var(--surface)}.px-visual .linugraf .mafs-shadow{stroke:var(--surface)}.px-visual .visual-missing{background:var(--surface);color:var(--muted);font-style:italic}.px-field-wrap{flex-direction:column;gap:8px;display:flex}.px-field-wrap.grow{flex:1}.px-label{font-weight:600}.px-label-row{justify-content:space-between;align-items:center;display:flex}.px-help{color:var(--muted);font-size:13px}.px-fld{border:1px solid var(--rule);background:var(--surface);padding:14px 16px}.px-answer{align-items:center;min-height:60px;padding-top:6px;padding-bottom:6px;display:flex}.px-answering.single .px-answer{min-height:56px}.px-answering.single math-field.px-mf{font-size:24px}.px-mf-loading{width:100%;height:32px;display:block}math-field.px-mf{width:100%;color:var(--text);--caret-color:var(--accent);--selection-background-color:var(--highlight);--selection-color:var(--text);--contains-highlight-background-color:transparent;--placeholder-color:var(--faint);--smart-fence-color:var(--muted);background:0 0;border:0;outline:0;padding:0;font-size:26px;display:block}math-field::part(menu-toggle){display:none}math-field::part(virtual-keyboard-toggle){color:var(--muted)}.px-answer:focus-within{outline:2px solid var(--accent);outline-offset:2px}.px-reasoning{min-height:180px;font:19px/1.6 var(--serif);color:var(--soft);white-space:pre-wrap;overflow-wrap:anywhere;cursor:text;outline:none;flex:1;position:relative}.px-reasoning:focus-within{outline:2px solid var(--accent);outline-offset:2px}.px-reasoning[data-empty=true]:before{content:attr(data-placeholder);color:var(--faint);pointer-events:none;position:absolute;top:14px;left:16px;right:16px}.px-reasoning>div{min-height:1.6em}.px-answering.single .px-reasoning{flex:none;min-height:170px;font-size:18px}math-field.px-mf-inline{vertical-align:baseline;border:0;border-bottom:1px solid var(--accent);background:color-mix(in srgb, var(--accent) 7%, transparent);min-width:1.6em;max-width:100%;color:var(--text);--caret-color:var(--accent);--selection-background-color:var(--highlight);--selection-color:var(--text);--contains-highlight-background-color:transparent;margin:0 1px;padding:0 4px;font-size:19px;display:inline-block}math-field.px-mf-inline:focus-within{outline:1px solid var(--accent)}.px-sigma{border:1px solid var(--line);min-width:44px;min-height:44px;font:20px/1 var(--serif);color:var(--text);cursor:pointer;background:0 0;border-radius:2px;margin:-10px 0}.px-sigma:hover{background:var(--well)}.px-hints{flex-direction:column;gap:12px;display:flex}.px-hint{border-left:3px solid var(--line);flex-direction:column;gap:2px;padding:4px 0 4px 14px;display:flex}.px-hint p{font:18px/1.5 var(--serif);flex-wrap:wrap;align-items:center;gap:4px;display:flex}.px-hint-btn{font-weight:500}.px-hint-btn .muted{font-size:13px;font-weight:400}.px-submit-row{justify-content:flex-end;align-items:center;gap:16px;display:flex}.px-help-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.px-reveal{font-size:14px;text-decoration:none}.px-reveal:hover{text-decoration:underline}.px-err{color:var(--bad);font-size:14px}.px-result{flex-direction:column;gap:22px;width:100%;max-width:808px;margin:0 auto;padding:40px 24px;display:flex}.px-revealed{color:var(--muted);font-size:15px}.px-verdicts{outline:none;gap:16px;display:flex}.px-verdicts[tabindex="-1"]:focus-visible,.px-box[tabindex="-1"]:focus-visible{outline:none}.px-verdict{border:1px solid var(--line);background:var(--surface);flex:1;justify-content:space-between;align-items:center;gap:12px;min-width:0;min-height:60px;padding:14px 16px;display:flex}.px-verdict+.px-verdict{background:0 0}.px-verdict-answer{font-size:24px;line-height:30px;overflow:auto hidden}.px-verdict .good{color:var(--good);white-space:nowrap;font-weight:600}.px-verdict .bad{color:var(--bad);white-space:nowrap;font-weight:600}.px-disputed{color:var(--muted);font-weight:400}.px-mistake p{font:19px/1.55 var(--serif)}.eb.bad{color:var(--bad)}.px-lines{font:20px/1.7 var(--serif);border-left:3px solid var(--line);overflow-wrap:anywhere;padding:20px 24px}.px-lines.empty{color:var(--muted);font-style:italic}.px-line{scroll-margin:96px}.px-lines mark{background:color-mix(in srgb, var(--partial) 18%, transparent);color:inherit;border-bottom:2px solid var(--partial);padding:0 2px}.px-line.flash mark{animation:1.2s ease-out px-flash}@keyframes px-flash{0%{background:color-mix(in srgb, var(--partial) 45%, transparent)}}.px-box{background:var(--surface);border:1px solid var(--line);flex-direction:column;gap:10px;padding:20px 24px;display:flex}.px-box-head{justify-content:space-between;align-items:center;min-height:44px;margin:-14px 0;display:flex}.px-feedback{font:19px/1.55 var(--serif)}.px-feedback-skel{flex-direction:column;gap:10px;display:flex}.px-feedback-skel .skel{height:18px}.px-quote{border:0;border-left:2px solid var(--partial);min-height:44px;font:italic 18px/1.4 var(--serif);color:var(--soft);cursor:pointer;text-align:left;background:0 0;align-self:flex-start;padding:4px 0 4px 10px}.px-quote:hover{color:var(--text)}.px-small-link{align-self:flex-start;align-items:center;min-height:44px;font-size:14px;display:inline-flex}.px-box>.px-small-link{margin:-11px 0}.px-caret{background:var(--muted);vertical-align:-2px;width:2px;height:1em;margin-left:2px;animation:1s steps(2,end) infinite px-blink;display:inline-block}@keyframes px-blink{50%{opacity:0}}.px-dots-anim span{opacity:.2;animation:1.4s infinite px-dot}.px-dots-anim span:nth-child(2){animation-delay:.2s}.px-dots-anim span:nth-child(3){animation-delay:.4s}@keyframes px-dot{40%{opacity:1}}.px-levelup{color:var(--muted);align-items:center;gap:8px;font-size:15px;display:flex}.px-solution{font:19px/1.6 var(--serif);margin:0;padding-left:24px}.px-mine{flex-direction:column;gap:12px;display:flex}.px-actions{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.px-quiet{flex-wrap:wrap;align-items:center;gap:20px;display:flex}.linkbtn.muted-link,.muted-link{color:var(--muted);min-height:44px;font-size:14px;text-decoration:underline}.linkbtn.muted-link:hover,.muted-link:hover{color:var(--text)}.px-main-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;margin-left:auto;display:flex}.px-center{flex:1;justify-content:center;align-items:center;padding:40px 24px;display:flex}.px-stuck,.px-done{flex-direction:column;gap:24px;width:100%;max-width:600px;display:flex}.px-stuck h1,.px-done h1{font-size:52px}.px-stuck-text{font:22px/1.6 var(--serif);color:var(--soft)}.px-row-wrap{flex-wrap:wrap;gap:12px;display:flex}.px-stuck-help{font-size:14px}.px-done-list{border-top:1px solid var(--rule);margin:0;padding:0;list-style:none}.px-done-name{font:19px/1.3 var(--serif);align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--text)!important}.px-done-meta{align-items:center;gap:16px;font-size:14px;display:inline-flex}.px-done-levels{color:var(--muted);align-items:center;gap:6px;display:inline-flex}.dialog.px-dialog{gap:16px;padding:36px}.px-dialog-title{font-size:34px}.px-dialog-text{font:18px/1.5 var(--serif);color:var(--soft)}.px-reasons{border:0;flex-direction:column;gap:6px;margin:0;padding:0;display:flex}.px-reasons legend{margin-bottom:4px;padding:0;font-weight:600}.px-reasons label,.px-check{cursor:pointer;align-items:center;gap:6px;min-height:44px;font-size:15px;display:flex}.px-reasons label{min-height:22px}.px-reasons input,.px-check input{accent-color:var(--accent);flex:none;width:13px;height:13px;margin:0 0 0 5px}.px-note{border:1px solid var(--rule);background:var(--surface);min-height:110px;font:17px/1.5 var(--serif);color:var(--text);resize:vertical;border-radius:0;padding:12px}.px-note::placeholder{color:var(--faint)}.px-dialog-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}.px-dialog .px-note{min-height:136px;color:var(--soft)}.px-h1{border-bottom:1px solid var(--rule);padding-bottom:12px;font-size:44px}.rv-hub{max-width:860px}.rv-lead{flex-direction:column;align-items:flex-start;gap:16px;display:flex}.rv-count{font:26px/1.3 var(--serif)}.rv-num{font-size:44px;line-height:1}.rv-text{font:19px/1.55 var(--serif);color:var(--soft);max-width:600px}.rv-h2{font-family:var(--sans);margin-bottom:4px;font-weight:500}.rv-list{border-top:1px solid var(--rule);margin:0;padding:0;list-style:none}.rv-name{min-height:44px;font:19px/1.3 var(--serif);align-items:center;gap:10px;text-decoration:none;display:inline-flex;color:var(--text)!important}.rv-name:hover{text-decoration:underline}.rv-meta{white-space:nowrap;font-size:14px}@media (width<=860px){.px-head{gap:12px;min-height:56px;padding:4px 16px}.px-head>.eb{display:none}.px-back{flex:0 auto;min-width:0}.px-tonext-label{display:none}.px-segs{width:96px}.px-answering,.px-answering.single{flex-direction:column;gap:24px;padding:20px 16px 32px}.px-answer-col{border-left:0;padding-left:0}.px-problem.collapsed{z-index:10;background:var(--bg);border-bottom:1px solid var(--line);flex:none;margin:-8px -16px 0;padding:0 16px;position:sticky;top:56px}.px-problem.collapsed .px-problem-full{display:none}.px-problem.collapsed .px-summary{width:100%;min-height:48px;font:17px/1.3 var(--serif);color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:12px;padding:4px 0;display:flex}.px-summary-text{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;overflow:hidden}.px-summary-more{font:600 13px/1 var(--sans);color:var(--accent);white-space:nowrap}.px-prompt{font-size:21px!important}.px-reasoning{min-height:160px}.px-result{padding:24px 16px 40px}.px-verdicts{flex-direction:column;gap:10px}.px-lines{padding:12px 16px;font-size:19px}.px-box{padding:16px}.px-actions{flex-direction:column-reverse;align-items:stretch}.px-main-actions{flex-direction:column-reverse;align-items:stretch;margin-left:0}.px-main-actions .btn{width:100%}.px-stuck h1,.px-done h1{font-size:38px}.px-stuck-text{font-size:20px}.dialog.px-dialog{padding:24px 20px}.px-reasons{gap:0}.px-reasons label{min-height:44px}.px-dialog-title{font-size:28px}}@media (width<=420px){.px-segs{display:none}}@media (prefers-reduced-motion:reduce){.px-caret,.px-dots-anim span,.px-line.flash mark{animation:none}.px-dots-anim span{opacity:.6}}.px-mf-host{flex:1;min-width:0}.pg{gap:28px}.pg-tabs{border-bottom:1px solid var(--line);gap:28px;margin-top:-12px;display:flex}.pg-tab{min-height:44px;font:20px/1 var(--serif);color:var(--muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;margin-bottom:-1px;padding:0 2px}.pg-tab:hover{color:var(--text)}.pg-tab.on{color:var(--accent);border-bottom-color:var(--accent);font-style:italic}.pg-panel{flex-direction:column;gap:36px;display:flex}.pg-sec{flex-direction:column;gap:16px;display:flex}.pg-small{font-size:14px}.pg-counts{grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;display:grid}.pg-count{font:44px/1 var(--serif)}.pg-count.good{color:var(--good)}.pg-count.partial{color:var(--partial)}.pg-count-label{color:var(--muted);align-items:center;gap:6px;margin-top:4px;font-size:13px;display:inline-flex}.pg-bar{gap:2px;width:100%;display:flex}.pg-bar>span{min-width:2px}.pg-list{border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.pg-course{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,2fr) minmax(0,3fr) auto;align-items:center;gap:20px;min-height:52px;display:grid}.pg-course-name{font:18px/1.3 var(--serif);align-items:center;min-height:44px;text-decoration:none;display:flex;color:var(--text)!important}.pg-course-name:hover{text-decoration:underline}.pg-course-meta{white-space:nowrap;font-size:14px}.pg-two{grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:48px;display:grid}.pg-weeks{align-items:stretch;gap:10px;height:120px;display:flex}.pg-week{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:6px;min-width:0;display:flex}.pg-week-bar{width:100%;max-width:36px}.pg-week-label{color:var(--muted);white-space:nowrap;font-size:12px}.pg-changes{gap:40px;display:flex}.pg-table{border-collapse:collapse;width:100%;font-size:15px}.pg-table th,.pg-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;padding:12px 10px}.pg-table th{font:500 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.pg-skill{font:18px/1.3 var(--serif)}.pg-table td.pg-skill{padding:0}.pg-skill a{align-items:center;min-height:48px;padding:8px 10px;text-decoration:none;display:flex;color:var(--text)!important}.pg-table .pg-c-level{width:18.5%}.pg-table .pg-c-last{width:13.7%}.pg-table .pg-c-next{width:28%}.pg-skill a:hover{text-decoration:underline}.pg-level{white-space:nowrap;align-items:center;gap:8px;display:inline-flex}.pg-level.decayed{color:var(--partial)}.pg-level.good{color:var(--good)}.pg-due{color:var(--accent)}.pg-tag{margin-left:8px;font-size:13px}.pg-sub-date{display:none}.pg-filters{flex-wrap:wrap;align-items:flex-end;gap:16px;display:flex}.pg-filters .field{min-width:150px}.pg-filters .field:first-child{flex:1;min-width:240px;max-width:360px}.pg-filters select,.pg-filters input,.pg-clear{min-height:44px}.pg-filters .pg-date{min-width:150px;max-width:180px;position:relative}.pg-disputes{flex-direction:column;margin:-18px 0 0;padding:0;list-style:none;display:flex}.pg-dispute{border-bottom:1px solid var(--line);flex-direction:column;gap:8px;padding:18px 0;display:flex}.pg-dispute-head{justify-content:space-between;align-items:center;gap:16px;display:flex}.pg-dispute-name{font:19px/1.3 var(--serif);align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--text)!important}.pg-dispute-name:hover{text-decoration:underline}.pg-status{font:600 12px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;border:1px solid;padding:5px 8px}.pg-status.open{color:var(--muted)}.pg-status.upheld{color:var(--good)}.pg-status.rejected{color:var(--soft)}.pg-note{font:17px/1.5 var(--serif);color:var(--soft)}.pg-reply{background:var(--surface);border-left:3px solid var(--rule);flex-direction:column;gap:4px;padding:12px 16px;display:flex}.pg-reply p{font:17px/1.5 var(--serif)}.sd{gap:24px;max-width:808px}.sd-back{align-self:flex-start;align-items:center;min-height:44px;font-size:15px;display:inline-flex}.sd-head{flex-direction:column;gap:6px;display:flex}.sd-head h1{font-size:40px}.sd-meta{color:var(--muted);flex-wrap:wrap;gap:16px;font-size:14px;display:flex}.sd-prompt{font:24px/1.5 var(--serif);flex-direction:column;gap:12px;display:flex}@media (width<=860px){.pg-tabs{gap:20px;margin-top:-8px}.pg-counts{gap:8px}.pg-count{font-size:32px}.pg-count-label{flex-direction:column;align-items:flex-start;gap:2px;font-size:11px}.pg-course{grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;padding:6px 0 12px}.pg-course .pg-bar{grid-area:2/1/auto/-1}.pg-two{grid-template-columns:minmax(0,1fr);gap:32px}.pg-hide,.pg-hide-sm{display:none}.pg-sub-date{font:13px/1.3 var(--sans);display:block}.pg-table{font-size:14px}.pg-table th,.pg-table td{padding:10px 6px}.pg-table th:first-child,.pg-table td:first-child{padding-left:0}.pg-skill{font-size:17px}.pg-skill a{padding:6px 6px 6px 0}.pg-table .pg-c-level,.pg-table .pg-c-last,.pg-table .pg-c-next{width:auto}.pg-filters{align-items:flex-start}.pg-filters .pg-date{max-width:none}.pg-filters .field:nth-child(2){flex-basis:100%}.pg-filters .field,.pg-filters .field:first-child{flex:140px;min-width:0;max-width:none}.pg-filters .field:first-child{flex-basis:100%}.sd-head h1{font-size:32px}.sd-prompt{font-size:21px}}.rec-row{position:relative}.rec-row:hover{background:var(--surface)}.rec-row:has(.rec-link:focus-visible){outline:2px solid var(--accent);outline-offset:-2px}.rec-ex{min-width:0}.rec-link{align-items:center;min-height:32px;text-decoration:none;display:flex;color:var(--text)!important}.rec-link:after{content:"";position:absolute;inset:0}.rec-link:focus-visible{outline:none}.rec-row:hover .rec-prompt{text-decoration:underline;-webkit-text-decoration-color:var(--faint);text-decoration-color:var(--faint);text-underline-offset:3px}.rec-prompt{font:18px/1.35 var(--serif);-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.rec-meta{color:var(--muted);margin-top:2px;font-size:13px;display:block}.rec-meta-date{display:none}.rec-ans{white-space:nowrap}.rec-tag{color:var(--muted);margin-top:2px;font-size:13px;display:block}.rec-grade{text-align:right;flex-direction:column;align-items:flex-end;gap:2px;display:inline-flex}.rec-outcome{font:17px/1.5 var(--serif)}.datefield{position:relative}.datefield-row{align-items:stretch;display:flex;position:relative}.datefield-row input[type=text]{flex:1;min-width:0}.datefield input::placeholder{color:var(--faint);font-style:italic}.datefield-row:has(input[aria-invalid=true])>*{border-bottom-color:var(--bad)}.datefield-cal{border:0;border-bottom:1px solid var(--rule);min-height:44px;color:var(--muted);cursor:pointer;background:0 0;flex:0 0 44px;justify-content:center;align-items:center;display:inline-flex}.datefield-cal:hover{color:var(--text)}.datefield .datefield-native{opacity:0;pointer-events:none;border:0;width:44px;height:1px;min-height:0;padding:0;position:absolute;bottom:0;right:0}.datefield-err{width:max-content;max-width:260px;color:var(--bad);margin-top:4px;font-size:13px;position:absolute;top:100%;left:0}@media (width<=860px){.datefield-err{width:auto;max-width:none;position:static}.rec-prompt{font-size:17px}.rec-meta-date{display:inline}}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-cyrillic-ext-wght-normal-Bt3rCdHq.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-cyrillic-wght-normal-DBa2mnKT.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-greek-ext-wght-normal-CW-BywWH.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-greek-wght-normal-DCPER7xl.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-vietnamese-wght-normal-DvUmmjCN.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-latin-ext-wght-normal-B6IpcvL2.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:EB Garamond Variable;font-style:normal;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-latin-wght-normal-CRpggXlh.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-cyrillic-ext-wght-italic-Ba0fXTjv.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-cyrillic-wght-italic-Cini1BOa.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-greek-ext-wght-italic-nvsmRjVx.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-greek-wght-italic-Dc0bJcw6.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-vietnamese-wght-italic-2ii8blLS.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-latin-ext-wght-italic-CYvIfuu9.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:EB Garamond Variable;font-style:italic;font-display:swap;font-weight:400 800;src:url(/assets/eb-garamond-latin-wght-italic-AvGrCMCN.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/libre-franklin-cyrillic-ext-wght-normal-BbRulJFC.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/libre-franklin-cyrillic-wght-normal-se3OnFSl.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/libre-franklin-vietnamese-wght-normal-DTJpi3oK.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/libre-franklin-latin-ext-wght-normal-CeZZaleV.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/libre-franklin-latin-wght-normal-CLTz0ja0.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg:#f4efe6;--surface:#f8f4ec;--well:#ebe3d5;--text:#1f1b16;--soft:#3b342c;--muted:#6b6257;--faint:#8a8073;--line:#d9d0c1;--rule:#1f1b16;--accent:#b8401f;--accent-hover:#8e2f15;--accent-text:#fff8f0;--good:#2f6b4f;--partial:#8a5a12;--bad:#b8401f;--highlight:color-mix(in srgb, var(--accent) 18%, transparent);--serif:"EB Garamond Variable", "EB Garamond", Garamond, Georgia, serif;--sans:"Libre Franklin Variable", "Libre Franklin", system-ui, sans-serif;--reading-size:20px;--nav-w:240px;--tabbar-h:64px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#1b1814;--surface:#221e19;--well:#2a251f;--text:#ece4d5;--soft:#d6ccbb;--muted:#a59b8c;--faint:#7f766a;--line:#3a342c;--rule:#8c8273;--accent:#e57a55;--accent-hover:#f09a7a;--accent-text:#1b1814;--good:#8fbf9a;--partial:#d9a95a;--bad:#e57a55;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#1b1814;--surface:#221e19;--well:#2a251f;--text:#ece4d5;--soft:#d6ccbb;--muted:#a59b8c;--faint:#7f766a;--line:#3a342c;--rule:#8c8273;--accent:#e57a55;--accent-hover:#f09a7a;--accent-text:#1b1814;--good:#8fbf9a;--partial:#d9a95a;--bad:#e57a55;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:root[data-text-size="0"]{--reading-size:18px}:root[data-text-size="2"]{--reading-size:23px}:root[data-dyslexia="1"] :is(.lesson-text,.lsample-text,.term-pop,.lend-card,.lesmal){--serif:"Libre Franklin Variable", system-ui, sans-serif}*,:before,:after{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font:16px/1.5 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.1}a{color:var(--accent)}a:hover{color:var(--accent-hover)}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.eb{font:500 12px/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.serif{font-family:var(--serif)}.muted{color:var(--muted)}.reading{font:var(--reading-size)/1.55 var(--serif)}.btn{border:1px solid var(--rule);min-height:50px;color:var(--text);font:600 15px/1.2 var(--sans);cursor:pointer;background:0 0;border-radius:2px;justify-content:center;align-items:center;gap:8px;padding:0 22px;text-decoration:none;display:inline-flex}.btn:hover{color:var(--text);background:var(--well)}.btn.p{background:var(--text);border-color:var(--text);color:var(--bg)}.btn.p:hover{background:var(--soft)}.btn.a{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.btn.a:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:var(--accent-text)}.btn.sm{min-height:44px;padding:0 16px}.btn:disabled{opacity:.5;cursor:default}.linkbtn{color:var(--accent);cursor:pointer;background:0 0;border:0;min-height:44px;padding:0;text-decoration:underline}.field{flex-direction:column;gap:4px;display:flex}.field input,.field select,.field textarea{font:20px/1.3 var(--serif);color:var(--text);border:0;border-bottom:1px solid var(--rule);background:0 0;border-radius:0;width:100%;min-height:48px;padding:6px 2px}select option{background:var(--bg);color:var(--text)}@supports (appearance:base-select){select{appearance:base-select}::picker(select){appearance:base-select}select{cursor:pointer;border-radius:0;align-items:center;gap:8px;display:inline-flex}select::picker-icon{color:var(--muted)}::picker(select){background:var(--bg);max-height:60vh;color:var(--text);border:1px solid var(--rule);margin-top:4px;padding:8px 0;box-shadow:0 12px 32px -16px #00000059}select option{font:15px/1.3 var(--sans);align-items:center;gap:10px;min-height:44px;padding:0 16px}select option:hover,select option:focus-visible{background:var(--well);outline:none}select option:checked{color:var(--accent)}select option::checkmark{color:var(--accent)}}.rule-top{border-top:1px solid var(--rule);padding-top:16px}.hair-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:14px 0;display:flex}.shell{min-height:100vh;display:flex}.nav{flex:0 0 var(--nav-w);border-right:1px solid var(--line);flex-direction:column;gap:4px;height:100vh;padding:40px 28px;display:flex;position:sticky;top:0}.nav-brand{font:500 30px/1.1 var(--serif);align-self:flex-start;margin-bottom:28px;text-decoration:none;color:var(--text)!important}.nl{min-height:44px;font:20px/1 var(--serif);align-items:center;text-decoration:none;display:flex;color:var(--text)!important}.nl.active{font-style:italic;color:var(--accent)!important}.nav-badge{font:600 12px/1 var(--sans);background:var(--accent);color:var(--accent-text);margin-left:8px;padding:4px 7px;font-style:normal}.nav-foot{margin-top:auto;position:relative}.nav-me{cursor:pointer;text-align:left;min-height:44px;font:14px/1.3 var(--sans);color:var(--muted);background:0 0;border:0;padding:0}.nav-me:hover,.nav-me[aria-expanded=true]{color:var(--text)}.menu{z-index:40;background:var(--bg);border:1px solid var(--rule);flex-direction:column;min-width:200px;padding:8px 0;display:flex;position:absolute;box-shadow:0 12px 32px -16px #00000059}.menu-up{bottom:calc(100% + 4px);left:-8px}.menu-down{top:calc(100% + 4px);right:0}.menu-item{text-align:left;min-height:44px;font:18px/1 var(--serif);cursor:pointer;background:0 0;border:0;align-items:center;padding:0 20px;text-decoration:none;display:flex;color:var(--text)!important}.menu-item:hover,.menu-item:focus-visible{background:var(--well)}.menu-item.active{font-style:italic;color:var(--accent)!important}.nav-me.active{color:var(--accent);font-style:italic}.menu-name{color:var(--muted);padding:8px 20px;font-size:14px}.skip:focus{clip:auto;z-index:80;background:var(--bg);border:1px solid var(--rule);width:auto;height:auto;padding:10px 16px;position:fixed;top:8px;left:8px}.main{flex:auto;min-width:0;padding:48px 56px 64px}.main[data-pad="40"]{padding:40px 40px 64px}.main[data-pad="24-40"]{padding:24px 40px 64px}.main[data-pad="40-48"]{padding:40px 48px 64px}.main[data-pad="48"]{padding:48px 48px 64px}.page{flex-direction:column;gap:40px;max-width:1100px;display:flex}.tabbar,.topbar-phone{display:none}@media (width<=860px){.nav{display:none}.main,.main[data-pad]{padding:20px 16px calc(var(--tabbar-h) + 32px)}.shell{flex-direction:column}.topbar-phone{border-bottom:1px solid var(--line);background:var(--bg);z-index:20;justify-content:space-between;align-items:center;min-height:56px;padding:0 4px 0 16px;display:flex;position:sticky;top:0}.topbar-phone .nav-brand{align-self:center;margin:0;padding:8px 0 10px;font-size:26px;line-height:1}.topbar-menu{min-width:48px;min-height:48px;color:var(--text);cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;display:inline-flex}.tabbar{z-index:30;height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--bg);border-top:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.tab{font:500 12px/1 var(--sans);flex-direction:column;justify-content:center;align-items:center;gap:3px;min-height:44px;text-decoration:none;display:flex;color:var(--muted)!important}.tab.active{color:var(--accent)!important}.tab-icon{display:inline-flex;position:relative}.tab-badge{min-width:18px;font:600 11px/1 var(--sans);text-align:center;background:var(--accent);color:var(--accent-text);padding:3px 5px;position:absolute;top:-5px;left:15px}.page{gap:28px}}.session-bar{border-bottom:1px solid var(--line);background:var(--bg);z-index:20;align-items:center;gap:20px;min-height:56px;padding:5px 40px;display:flex;position:sticky;top:0}.session-bar .back{min-height:44px;font:15px/1.2 var(--sans);color:var(--accent);text-underline-offset:3px;flex:none;align-items:center;gap:4px;text-decoration:underline;display:inline-flex}.session-bar .back:hover{color:var(--accent-hover)}.session-bar .title{font:500 12px/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;overflow:hidden}.session-bar .right{color:var(--muted);flex:none;align-items:center;gap:12px;margin-left:auto;font-size:14px;display:inline-flex}@media (width<=860px){.session-bar{gap:14px;padding:5px 16px}}.shell-admin{flex-direction:column}.admin-bar{border-bottom:1px solid var(--rule);background:var(--bg);flex-wrap:wrap;align-items:center;gap:16px;min-height:64px;padding:8px 32px;display:flex}.admin-brand{font:500 24px/1 var(--serif);align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--text)!important}.admin-eb{color:var(--accent)}.admin-links{color:var(--muted);align-items:center;gap:10px;margin-left:auto;font-size:14px;display:flex}.admin-link{align-items:center;min-height:44px;text-decoration:none;display:inline-flex;color:var(--muted)!important}.admin-link:hover{color:var(--text)!important}.admin-link.active{font-weight:600;color:var(--text)!important}.shell-admin .ad-head{display:none}.shell-admin .ad{min-height:calc(100vh - 65px)}@media (width<=860px){.admin-bar{gap:12px;min-height:52px;padding:4px 16px}.admin-brand{font-size:22px}.shell-admin .main{padding-bottom:32px}.shell-admin .ad{min-height:0}}.toast{z-index:50;background:var(--text);color:var(--bg);align-items:center;gap:20px;max-width:calc(100vw - 32px);padding:16px 20px;display:flex;position:fixed;bottom:40px;left:50%;transform:translate(-50%);box-shadow:0 12px 32px -16px #00000080}.toast>span{flex:auto;min-width:0}.toast>button{flex:none}.toast button{color:var(--bg);cursor:pointer;background:0 0;border:0;min-height:44px;font-weight:600;text-decoration:underline}@media (width<=860px){.toast{bottom:calc(var(--tabbar-h) + 16px);width:max-content}}.offline{z-index:70;background:var(--partial);color:var(--bg);text-align:center;padding:8px 16px;font-weight:600;position:fixed;top:0;left:0;right:0}.skel{background:var(--well);border-radius:2px;animation:1.4s ease-in-out infinite skel}@keyframes skel{50%{opacity:.55}}@media (prefers-reduced-motion:reduce){.skel{animation:none}}.mastery{align-items:center;gap:8px;display:inline-flex}.mastery.l4{color:var(--good)}.mastery.decayed{color:var(--partial)}.dialog-backdrop{z-index:60;background:#1f1b1673;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.dialog{background:var(--bg);border:1px solid var(--rule);flex-direction:column;gap:20px;width:100%;max-width:560px;max-height:calc(100vh - 32px);padding:32px;display:flex;overflow:auto}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.katex{font-size:1.05em}.brand{align-items:center;gap:.3em;display:inline-flex}.logo-mark{flex:none;width:1.05em;height:1.05em}