@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./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(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./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(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./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(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(./KaTeX_Size3-Regular-gV2CO0n9.woff2) format("woff2"),url(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,math,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.19.1"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.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;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .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{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.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;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.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:.8333333333em}.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:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.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:1.6666666667em}.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:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.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:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.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:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.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:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.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:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.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:.4166666667em}.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:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.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:.8333333333em}.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:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.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:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.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:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.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:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.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:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.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{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .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{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .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{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.iso{--anatomy-page:#0b0b0b;--anatomy-card:#131313;--anatomy-text:#a3a3a3;--anatomy-strong:#e6e6e6;--anatomy-muted:#6e6e6e;--anatomy-paper:#131313;--anatomy-face:#1b1b1b;--anatomy-top:#1c1c1c;--anatomy-shade-0:#0f0f0f;--anatomy-shade-1:#121212;--anatomy-shade-2:#151515;--anatomy-shade-3:#181818;--anatomy-lit-top:#262626;--anatomy-lit-shade:#1d1d1d;--anatomy-hi:#d4d4d4;--anatomy-mid:#6a6a6a;--anatomy-lo:#3e3e3e;--anatomy-faint:#2a2a2a;--anatomy-lit:#ffffff;--anatomy-halo:#050505;--anatomy-halo-opacity:.9;--anatomy-dot:#e6e6e6;--anatomy-red:#ff6b6b;--anatomy-green:#6be0a0;--anatomy-blue:#6b9bff;--anatomy-weight:.6px;--anatomy-ease:cubic-bezier(.32,.72,0,1);--anatomy-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--anatomy-lift:inset 0 1px 0 0 #ffffff0a,inset 0 0 0 1px #ffffff06,0 0 0 1px #00000026,0 1px 1px -.5px #00000014,0 3px 3px -1.5px #00000014,0 6px 6px -3px #00000014,0 12px 12px -6px #00000014}.iso[data-theme=light]{--anatomy-page:#f2f2ef;--anatomy-card:#fbfbfa;--anatomy-text:#57575a;--anatomy-strong:#18181a;--anatomy-muted:#8c8c90;--anatomy-paper:#fbfbfa;--anatomy-face:#ffffff;--anatomy-top:#ffffff;--anatomy-shade-0:#dcdcd9;--anatomy-shade-1:#e5e5e2;--anatomy-shade-2:#ededea;--anatomy-shade-3:#f4f4f1;--anatomy-lit-top:#ffffff;--anatomy-lit-shade:#eeeeeb;--anatomy-hi:#26262a;--anatomy-mid:#8a8a8f;--anatomy-lo:#b4b4b8;--anatomy-faint:#d4d4d6;--anatomy-lit:#000000;--anatomy-halo:#8a8a80;--anatomy-halo-opacity:.32;--anatomy-dot:#3a3a3e;--anatomy-red:#e5484d;--anatomy-green:#30a46c;--anatomy-blue:#3e63dd;--anatomy-lift:inset 0 1px 0 0 #ffffff,0 0 0 1px #0000000f,0 1px 1px -.5px #0000000a,0 3px 3px -1.5px #0000000a,0 6px 6px -3px #0000000a,0 12px 12px -6px #0000000a}.iso-svg{display:block;width:100%;height:auto;overflow:visible}.iso-svg path,.iso-svg circle{vector-effect:non-scaling-stroke}.iso-fill{fill:var(--anatomy-paper);stroke:none}.iso-solid[data-lit]>.iso-fill{fill:var(--anatomy-face)}.iso-shade,.iso-top{stroke:none}.iso-shade[data-shade="0"]{fill:var(--anatomy-shade-0)}.iso-shade[data-shade="1"]{fill:var(--anatomy-shade-1)}.iso-shade[data-shade="2"]{fill:var(--anatomy-shade-2)}.iso-shade[data-shade="3"]{fill:var(--anatomy-shade-3)}.iso-top{fill:var(--anatomy-top)}.iso-solid[data-lit]>.iso-top{fill:var(--anatomy-lit-top)}.iso-solid[data-lit]>.iso-shade{fill:var(--anatomy-lit-shade)}.iso-solid[data-seamless]>.iso-shade,.iso-solid[data-seamless]>.iso-top{stroke-width:.4;stroke-linejoin:round}.iso-solid[data-seamless]>.iso-shade[data-shade="0"]{stroke:var(--anatomy-shade-0)}.iso-solid[data-seamless]>.iso-shade[data-shade="1"]{stroke:var(--anatomy-shade-1)}.iso-solid[data-seamless]>.iso-shade[data-shade="2"]{stroke:var(--anatomy-shade-2)}.iso-solid[data-seamless]>.iso-shade[data-shade="3"]{stroke:var(--anatomy-shade-3)}.iso-solid[data-seamless]>.iso-top{stroke:var(--anatomy-top)}.iso-solid[data-seamless][data-lit]>.iso-top{stroke:var(--anatomy-lit-top)}.iso-solid[data-seamless][data-lit]>.iso-shade{stroke:var(--anatomy-lit-shade)}.iso-solid[data-lit]>.iso-edge{stroke:var(--anatomy-lit)}.iso-halo{fill:var(--anatomy-halo);stroke:none;filter:blur(9px);opacity:var(--anatomy-halo-opacity);transform:translateY(3px)}.iso-line{fill:none;stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight);stroke-linecap:round;stroke-linejoin:round}.iso-line[data-tone=hi]{stroke:var(--anatomy-hi)}.iso-line[data-tone=mid]{stroke:var(--anatomy-mid)}.iso-line[data-tone=lo]{stroke:var(--anatomy-lo)}.iso-line[data-tone=faint]{stroke:var(--anatomy-faint)}.iso-line[data-tone=lit]{stroke:var(--anatomy-lit)}.iso-line[data-tone=red]{stroke:var(--anatomy-red)}.iso-line[data-tone=green]{stroke:var(--anatomy-green)}.iso-line[data-tone=blue]{stroke:var(--anatomy-blue)}.iso-line[data-dotted]{stroke-dasharray:.01 3.5;stroke-width:1}.iso-line[data-dashed]{stroke-dasharray:3 3}.iso-line[data-flow]{stroke-dasharray:2 6}.iso-wire-end{fill:var(--anatomy-paper);stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight)}.iso-wire[data-tone=hi] .iso-wire-end{stroke:var(--anatomy-hi)}.iso-wire[data-tone=mid] .iso-wire-end{stroke:var(--anatomy-mid)}.iso-wire[data-tone=faint] .iso-wire-end{stroke:var(--anatomy-faint)}.iso-wire[data-tone=lit] .iso-wire-end{stroke:var(--anatomy-lit)}.iso-dots circle{fill:var(--anatomy-dot);stroke:none;opacity:.32}.iso-dots[data-tone=hi] circle{opacity:.85}.iso-dots[data-tone=mid] circle{opacity:.45}.iso-dots[data-tone=lo] circle{opacity:.22}.iso-dots[data-tone=faint] circle{opacity:.12}.iso-face-text{fill:var(--anatomy-mid);font-family:var(--anatomy-mono);letter-spacing:.04em}.iso-face-text[data-tone=hi]{fill:var(--anatomy-hi)}.iso-face-text[data-tone=lo]{fill:var(--anatomy-lo)}.iso-face-text[data-tone=faint]{fill:var(--anatomy-faint)}.tb-body{fill:var(--anatomy-shade-2);stroke:none}.tb-shine{fill:var(--anatomy-top);stroke:none}.tb-shade{fill:var(--anatomy-shade-0);stroke:none}.tb-ring{fill:none;stroke:var(--anatomy-lo);stroke-width:.45;stroke-linecap:butt;stroke-linejoin:round}.tb-ring[data-tone=mid]{stroke:var(--anatomy-mid)}.tb-ring[data-tone=faint]{stroke:var(--anatomy-faint)}.tb-ring[data-tone=hi]{stroke:var(--anatomy-hi)}@keyframes iso-flow{to{stroke-dashoffset:-32}}@keyframes iso-pulse{0%,to{opacity:.18}12%{opacity:1}40%{opacity:.18}}.iso-line[data-flow]{animation:iso-flow 1.6s linear infinite}.iso-dots circle[data-pulse]{animation:iso-pulse 1.6s steps(1,end) infinite;animation-delay:var(--pulse-at,0ms)}.iso-figure{margin:32px 0 36px}.iso-plate{position:relative;padding:52px 24px;border-radius:0;background:var(--anatomy-card);box-shadow:0 0 0 1px var(--anatomy-mid);--anatomy-paper:var(--anatomy-card)}.iso-plate-corners{position:absolute;inset:18px 20px;pointer-events:none}.iso-plate-corner{position:absolute;color:var(--anatomy-muted);font-family:var(--anatomy-mono);font-size:10.5px;line-height:1;letter-spacing:.04em;white-space:nowrap}.iso-plate-corner[data-corner=fig]{top:0;left:0;color:var(--anatomy-text)}.iso-plate-corner[data-corner=title]{top:0;right:0;text-transform:uppercase;letter-spacing:.1em}.iso-plate-corner[data-corner=hint]{bottom:0;left:0;text-transform:uppercase;letter-spacing:.1em}.iso-plate-corner[data-corner=readout]{right:0;bottom:0;color:var(--anatomy-text);font-variant-numeric:tabular-nums}.iso-plate .iso-svg{margin:0 auto}.iso-legend{display:grid;gap:8px;margin-top:12px;color:var(--anatomy-muted);font-size:13px;line-height:1.55}.iso-keys{display:flex;flex-wrap:wrap;gap:6px 18px}.iso-key{display:inline-flex;align-items:center;gap:7px}.iso-swatch{width:16px;height:10px;flex:none;overflow:visible}.iso-swatch path{fill:none;stroke:var(--anatomy-hi);stroke-width:1;vector-effect:non-scaling-stroke;stroke-linejoin:round;stroke-linecap:round}.iso-swatch[data-mark=raised] path,.iso-swatch[data-mark=flat] path{stroke:var(--anatomy-mid)}.iso-swatch[data-mark=lit] path{stroke:var(--anatomy-lit)}.iso-swatch[data-mark=dim] path{stroke:var(--anatomy-lo)}.iso-swatch[data-mark=dotted] path{stroke-dasharray:.01 3;stroke-width:1.4}.iso-swatch[data-mark=dashed] path{stroke-dasharray:3 2.5}.iso-swatch[data-mark=red] path{stroke:var(--anatomy-red)}.iso-swatch[data-mark=green] path{stroke:var(--anatomy-green)}.iso-swatch[data-mark=blue] path{stroke:var(--anatomy-blue)}.iso-swatch-crease{stroke:var(--anatomy-lo)!important}@media (max-width:560px){.iso-plate{padding:48px 12px 70px}.iso-plate-corner[data-corner=hint]{bottom:18px}}@media (prefers-reduced-motion:reduce){.iso-line[data-flow],.iso-dots circle[data-pulse]{animation:none}}:root{color-scheme:light;--bg: #e6dbc7;--card: #ede5d6;--raised: #f3eee4;--sunk: #ddd1bb;--line: #cbbfa8;--line-strong: #b5a88e;--ink: #062b8a;--text: #1c2f68;--muted: #4f5f8c;--faint: #7a84a3;--accent: #062b8a;--accent-hover: #0a3bb3;--accent-ink: #f6f1e7;--accent-wash: color-mix(in oklab, var(--accent) 9%, transparent);--right: #1f6b3a;--wrong: #b42318;--paper: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .32 0 0 0 0 .26 0 0 0 0 .16 0 0 0 .9 -.32'/%3E%3C/filter%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.008 .16' numOctaves='2' seed='7' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .38 0 0 0 0 .3 0 0 0 0 .18 0 0 0 .7 -.36'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23f)' opacity='.55'/%3E%3Crect width='100%25' height='100%25' filter='url(%23g)' opacity='.5'/%3E%3C/svg%3E");--paper-blend: multiply;--font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;--features: "cv01", "ss03";--t-label: .75rem;--t-caption: .8125rem;--t-small: .9375rem;--t-body: clamp(1rem, .97rem + .12vw, 1.0625rem);--t-lead: clamp(1.125rem, 1.04rem + .4vw, 1.25rem);--t-h3: clamp(1.25rem, 1.12rem + .55vw, 1.5rem);--t-h2: clamp(1.625rem, 1.3rem + 1.4vw, 2.25rem);--t-h1: clamp(2.125rem, 1.5rem + 2.8vw, 3.5rem);--t-display: clamp(2.5rem, 1.55rem + 4.2vw, 4.5rem);--w-regular: 400;--w-medium: 510;--w-semibold: 590;--s1: 4px;--s2: 8px;--s3: 12px;--s4: 16px;--s5: 20px;--s6: 24px;--s7: 32px;--s8: 48px;--s9: 64px;--s10: 96px;--section: clamp(64px, 5vw + 40px, 120px);--margin: clamp(16px, 3vw, 32px);--max: 1200px;--measure: 36em;--r-sm: 4px;--r-md: 6px;--r-lg: 12px;--r-pill: 999px;--target: 44px;--ease: cubic-bezier(.32, .72, 0, 1);--fast: .14s;--slow: .48s;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){color-scheme:dark;--bg: #0a0d14;--card: #0f131c;--raised: #151a25;--sunk: #080a10;--line: #222939;--line-strong: #323b4f;--ink: #f4f6fb;--text: #d0d6e0;--muted: #8a93a8;--faint: #5f677a;--accent: #5a9bfc;--accent-hover: #7fb2ff;--accent-ink: #06142c;--right: #6fd39a;--wrong: #ff8a80;--paper-blend: screen;--accent-wash: color-mix(in oklab, var(--accent) 14%, transparent);--paper: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .55 0 0 0 0 .62 0 0 0 0 .8 0 0 0 .5 -.2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)' opacity='.35'/%3E%3C/svg%3E")}}:root[data-theme=dark]{color-scheme:dark;--bg: #0a0d14;--card: #0f131c;--raised: #151a25;--sunk: #080a10;--line: #222939;--line-strong: #323b4f;--ink: #f4f6fb;--text: #d0d6e0;--muted: #8a93a8;--faint: #5f677a;--accent: #5a9bfc;--accent-hover: #7fb2ff;--accent-ink: #06142c;--right: #6fd39a;--wrong: #ff8a80;--paper-blend: screen;--accent-wash: color-mix(in oklab, var(--accent) 14%, transparent);--paper: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .55 0 0 0 0 .62 0 0 0 0 .8 0 0 0 .5 -.2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)' opacity='.35'/%3E%3C/svg%3E")}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:112px;scrollbar-color:var(--line-strong) var(--bg)}body{margin:0;min-height:100dvh;background-color:var(--bg);background-image:var(--paper);background-blend-mode:var(--paper-blend);color:var(--text);font:var(--w-regular) var(--t-body) / 1.6 var(--font);font-feature-settings:var(--features);letter-spacing:-.011em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;overflow-x:clip}img{display:block;max-width:100%;height:auto}a{color:var(--ink);text-decoration-line:underline;text-decoration-color:color-mix(in oklab,currentColor 35%,transparent);text-decoration-thickness:1px;text-underline-offset:.2em;transition:text-decoration-color var(--fast) var(--ease),color var(--fast) var(--ease)}a:hover{text-decoration-color:currentColor}button,input{font:inherit;color:inherit;letter-spacing:inherit}p{margin:0;text-wrap:pretty}h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:var(--w-semibold);text-wrap:balance}ul,ol{margin:0;padding:0;list-style:none}strong{color:var(--ink);font-weight:var(--w-semibold)}code{font-family:var(--mono);font-size:.86em}::selection{background:var(--accent);color:var(--accent-ink)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm)}#main:focus{outline:none}.display{font-size:var(--t-display);line-height:1.04;letter-spacing:-.035em;font-weight:var(--w-semibold)}.h1{font-size:var(--t-h1);line-height:1.08;letter-spacing:-.03em}.h2{font-size:var(--t-h2);line-height:1.15;letter-spacing:-.024em}.h3{font-size:var(--t-h3);line-height:1.25;letter-spacing:-.018em}.lead{font-size:var(--t-lead);line-height:1.5;letter-spacing:-.014em;color:var(--muted);max-width:var(--measure)}.muted{color:var(--muted)}.small{font-size:var(--t-caption)}.num{font-family:var(--mono);font-size:.86em;font-variant-numeric:tabular-nums;letter-spacing:0}.skip{position:absolute;left:var(--margin);top:-100px;z-index:30;padding:var(--s2) var(--s4);border-radius:var(--r-md);background:var(--accent);color:var(--accent-ink);text-decoration:none}.skip:focus{top:calc(var(--safe-top) + 8px)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.card{background-color:var(--card);background-image:var(--paper);background-blend-mode:var(--paper-blend);border:1px solid var(--line);border-radius:var(--r-lg);min-width:0}.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:var(--s2);min-height:40px;padding:0 var(--s4);border:1px solid transparent;border-radius:var(--r-md);font-size:var(--t-small);font-weight:var(--w-medium);line-height:1;letter-spacing:-.006em;text-decoration:none;white-space:nowrap;cursor:pointer;transition:background-color var(--fast) var(--ease),border-color var(--fast) var(--ease),color var(--fast) var(--ease),transform var(--fast) var(--ease)}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent);color:var(--accent-ink)}.btn-primary:hover{background:var(--accent-hover);color:var(--accent-ink)}.btn-ghost{background:var(--raised);border-color:var(--line-strong);color:var(--ink)}.btn-ghost:hover{border-color:var(--muted)}.btn-sm{min-height:32px;padding:0 var(--s3);font-size:var(--t-caption)}.btn-sm:before{content:"";position:absolute;inset:-6px -2px}.icon-btn{position:relative;display:inline-grid;place-items:center;width:32px;height:32px;padding:0;border:1px solid transparent;border-radius:var(--r-md);background:none;cursor:pointer;color:var(--muted);transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease)}.icon-btn:before{content:"";position:absolute;inset:-6px}.icon-btn:hover{background:var(--sunk);color:var(--ink)}.icon-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}.pill{display:inline-flex;align-items:center;gap:var(--s1);min-height:24px;padding:0 10px;border:1px solid var(--line-strong);border-radius:var(--r-pill);font-size:var(--t-label);font-weight:var(--w-medium);color:var(--muted);line-height:1;white-space:nowrap}.pill-accent{border-color:transparent;background:var(--accent);color:var(--accent-ink)}.pills{display:flex;flex-wrap:wrap;gap:var(--s2)}.badge{display:inline-flex;align-items:center;min-height:20px;padding:0 6px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--sunk);font-family:var(--font);font-size:var(--t-label);font-weight:var(--w-medium);color:var(--muted);line-height:1;white-space:nowrap}code.badge{font-family:var(--mono);font-weight:var(--w-regular);font-size:11.5px}.seg{display:inline-flex;gap:2px;max-width:100%;padding:2px;border:1px solid var(--line);border-radius:calc(var(--r-md) + 2px);background:var(--sunk);overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.seg::-webkit-scrollbar{display:none}.seg-item{flex:none;min-height:32px;padding:0 var(--s3);border:1px solid transparent;border-radius:var(--r-md);background:none;cursor:pointer;font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--muted);white-space:nowrap;transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease)}.seg-item:hover{color:var(--ink)}.seg-item[aria-selected=true],.seg-item[aria-checked=true]{background:var(--raised);border-color:var(--line-strong);color:var(--ink)}.range{display:flex;align-items:center;gap:var(--s3);width:100%;font-size:var(--t-caption);color:var(--muted)}.range label{white-space:nowrap}.range input{flex:1;min-width:0;height:32px;accent-color:var(--accent)}.status{flex:none;width:16px;height:16px}.status-ring{fill:none;stroke:var(--faint);stroke-width:1.5}.status-now .status-ring{stroke:var(--accent)}.status-half,.status-fill{fill:var(--accent)}.status-tick{fill:none;stroke:var(--accent-ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.status-planned .status-ring{stroke:var(--faint)}.mark{display:inline-flex;align-items:center;gap:var(--s2);color:var(--ink)}.mark-glyph{width:22px;height:22px;flex:none}.mark-ring{fill:none;stroke:currentColor;stroke-width:1.5}.mark-ticks{fill:none;stroke:currentColor;stroke-width:1.3;stroke-linecap:round;opacity:.55}.mark-needle{fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round}.mark-hub{fill:currentColor}.mark-word{font-size:15px;font-weight:var(--w-semibold);letter-spacing:-.02em}.mark-word span{color:var(--muted);font-weight:var(--w-medium)}.mark-big .mark-glyph{width:56px;height:56px}.mark-big .mark-word{font-size:32px}.nav{position:sticky;top:0;z-index:20;padding-top:var(--safe-top);background:color-mix(in oklab,var(--bg) 82%,transparent);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s4);max-width:calc(var(--max) + 2 * var(--margin));height:56px;margin:0 auto;padding:0 var(--margin)}.nav-home{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.nav-links{display:flex;align-items:center;gap:var(--s1)}.nav-links>a:not(.btn){display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border-radius:var(--r-md);font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--muted);text-decoration:none;transition:color var(--fast) var(--ease),background-color var(--fast) var(--ease)}.nav-links>a:not(.btn):hover{color:var(--ink);background:var(--sunk)}.nav-links .btn{margin-left:var(--s2)}.page{max-width:calc(var(--max) + 2 * var(--margin));margin:0 auto;padding:0 var(--margin) var(--s10)}.section{padding-top:var(--section)}.section-head{display:grid;gap:var(--s2);margin-bottom:var(--s7)}.section-head .muted{max-width:var(--measure)}.split{display:grid;gap:var(--s7);align-items:start}.split-text{display:grid;gap:var(--s4);align-content:start}@media (max-width: 999px){#systems .split-text{display:contents}#systems .note{order:3}}@media (min-width: 1000px){.split{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--s9)}.split-text{position:sticky;top:104px}}.hero{display:grid;gap:var(--s8);padding-top:clamp(40px,6vw,96px)}.hero-copy{display:grid;gap:var(--s5);justify-items:start}.hero-copy .lead{max-width:30em}.announce{display:inline-flex;align-items:center;gap:var(--s2);max-width:100%;min-height:32px;padding:0 var(--s3) 0 4px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--card);font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--text);text-decoration:none}.announce:hover{border-color:var(--line-strong)}.announce span[aria-hidden]{color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:var(--s3);padding-top:var(--s2)}.hero-card{overflow:hidden}.hero-bar{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2) var(--s3);padding:var(--s3) var(--s4);border-bottom:1px solid var(--line)}.hero-seg{margin-left:auto}.hero-figure{padding:var(--s2)}@media (min-width: 1000px){.hero{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:center;gap:var(--s9)}}@media (max-width: 560px){.hero-seg{margin-left:0;width:100%}.hero-seg .seg-item{flex:1}.actions .btn{flex:1 1 auto}}.figure-frame{display:block;width:100%;border:0;background:transparent}.tracks{display:grid;gap:var(--s4);grid-template-columns:repeat(auto-fill,minmax(min(100%,360px),1fr));align-items:start}.track{padding:var(--s2)}.track-head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s3);padding:var(--s3) var(--s3) var(--s2)}.track-head h3{font-size:var(--t-small);font-weight:var(--w-semibold);letter-spacing:-.01em}.rows{display:grid}.row{display:grid;grid-template-columns:16px minmax(0,1fr) auto;align-items:center;gap:var(--s3);min-height:52px;padding:var(--s2) var(--s3);border-radius:var(--r-md);color:var(--text);text-decoration:none}.row{align-items:start}.row .status{margin-top:3px}.row-meta{padding-top:1px}.row-main{display:grid;gap:2px;min-width:0}.row-title{font-size:var(--t-small);font-weight:var(--w-medium);color:var(--ink);line-height:1.35}.row-sub{font-size:var(--t-caption);color:var(--muted);line-height:1.4}.row-meta{display:inline-flex;align-items:center;gap:var(--s2);color:var(--muted);font-size:var(--t-caption)}a.row{transition:background-color var(--fast) var(--ease)}a.row:hover{background:var(--sunk)}.row.is-planned .row-title{color:var(--muted)}@media (max-width: 560px){.row-meta .badge{display:none}}.rows-inset{margin:0 calc(-1 * var(--s3))}.note{display:grid;gap:var(--s2);padding:var(--s5);min-height:148px;align-content:start}.note-title{font-weight:var(--w-semibold);color:var(--ink)}.note p:not(.note-title){font-size:var(--t-small)}.note-link{font-size:var(--t-caption);font-weight:var(--w-medium)}.diagram-card{overflow:hidden}.diagram-body{padding:var(--s4) var(--s3);display:grid;justify-items:center}.made{padding:var(--s2)}.made .row{min-height:60px}.inside{display:grid;gap:var(--s4)}.video-slot{overflow:hidden}.video-frame{display:grid;place-items:center;aspect-ratio:16 / 9;background:var(--sunk);border-bottom:1px solid var(--line);background-image:var(--paper);background-blend-mode:var(--paper-blend)}.video-play{width:56px;height:56px}.video-play circle{fill:var(--raised);stroke:var(--line-strong);stroke-width:1}.video-play path{fill:var(--accent)}.video-meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2) var(--s3);padding:var(--s3) var(--s4)}.video-meta .badge{margin-left:auto}.parts{display:grid;gap:var(--s1);padding:var(--s2) 0}.parts li{display:grid;gap:2px;padding:var(--s3) 0;border-top:1px solid var(--line)}.parts li:first-child{border-top:0}.part-name{font-size:var(--t-small);font-weight:var(--w-semibold);color:var(--ink)}.part-text{font-size:var(--t-caption);color:var(--muted);line-height:1.45}.inside-plan{overflow:hidden}.inside-count{margin-left:auto;font-size:var(--t-label)}.inside-groups{display:grid;gap:var(--s1);padding:var(--s2)}.inside-groups .plan-group+.plan-group{border-left:0;padding-left:0;border-top:1px solid var(--line)}button.plan-row{width:100%;border:0;background:none;text-align:left;cursor:pointer;font:inherit}.retell{display:grid;gap:var(--s2);padding:var(--s4) var(--s5);border-top:1px solid var(--line);background:var(--raised)}.say-foot{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:var(--s2) var(--s4)}.say-label{font-family:var(--mono);font-size:var(--t-label);color:var(--muted)}.say-line{font-size:var(--t-lead);line-height:1.4;letter-spacing:-.014em;color:var(--ink);font-weight:var(--w-medium);min-height:2.8em}@media (min-width: 1000px){.inside{grid-template-columns:minmax(0,5fr) minmax(0,6fr);grid-template-rows:auto 1fr;gap:var(--s5) var(--s9);align-items:start}.video-slot{grid-column:1;grid-row:1}.parts{grid-column:1;grid-row:2}.inside-plan{grid-column:2;grid-row:1 / span 2}}@media (min-width: 640px) and (max-width: 999px){.parts{grid-template-columns:repeat(3,1fr);gap:var(--s5)}.parts li{border-top:0}}.begin{display:grid;gap:var(--s5);padding:var(--s7) var(--s5)}.begin-copy{display:grid;gap:var(--s2)}.begin-copy .muted{max-width:var(--measure)}.begin .actions{padding-top:0}@media (min-width: 800px){.begin{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:var(--s8) var(--s8)}}@media (max-width: 560px){.row.is-planned .row-sub{display:none}.row.is-planned{min-height:44px}}.shannon{display:grid;overflow:hidden}.shannon-portrait{background:var(--sunk);border-bottom:1px solid var(--line)}.shannon-portrait img{width:100%;height:260px;object-fit:cover;object-position:50% 18%;filter:grayscale(1) contrast(1.05);mix-blend-mode:multiply;opacity:.9}.shannon-copy{display:grid;gap:var(--s4);align-content:start;padding:var(--s6) var(--s5)}.shannon-copy>.muted{max-width:var(--measure)}.generated{min-height:4.8em;padding:var(--s4) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:var(--t-small);line-height:1.6;color:var(--ink)}.shannon-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s3)}@media (max-width: 560px){.shannon .seg{width:100%}.shannon .seg-item{flex:1 1 auto;padding:0 var(--s2)}}@media (min-width: 800px){.shannon{grid-template-columns:300px minmax(0,1fr)}.shannon-portrait{border-bottom:0;border-right:1px solid var(--line)}.shannon-portrait img{height:100%;min-height:420px}.shannon-copy{padding:var(--s8)}}:root[data-theme=dark] .shannon-portrait img{mix-blend-mode:screen;filter:grayscale(1) invert(1) contrast(.9);opacity:.55}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .shannon-portrait img{mix-blend-mode:screen;filter:grayscale(1) invert(1) contrast(.9);opacity:.55}}.sysd{display:block;width:100%;max-width:440px;height:auto;overflow:visible;font-family:var(--font)}.sysd-group rect{fill:none;stroke:var(--line-strong);stroke-width:1;stroke-dasharray:4 3}.sysd-group text{font-family:var(--mono);font-size:11px;fill:var(--muted)}.sysd-edge path{fill:none;stroke:var(--faint);stroke-width:1.2;transition:stroke var(--fast) var(--ease)}.sysd-edge.is-lit path{stroke:var(--accent);stroke-width:1.5}.sysd-head{fill:var(--faint)}.sysd-head.is-lit{fill:var(--accent)}.sysd-elabel rect{fill:var(--card);stroke:var(--line);stroke-width:1}.sysd-elabel text{font-family:var(--mono);font-size:11px;fill:var(--muted)}.sysd-edge.is-lit .sysd-elabel rect{stroke:var(--accent)}.sysd-edge.is-lit .sysd-elabel text{fill:var(--ink)}.sysd-node rect{fill:var(--raised);stroke:var(--line-strong);stroke-width:1;transition:fill var(--fast) var(--ease),stroke var(--fast) var(--ease)}.sysd-node.tone-io rect{fill:var(--sunk)}.sysd-node.tone-data rect{fill:var(--card);stroke-dasharray:3 2}.sysd-label{font-size:13px;font-weight:var(--w-semibold);fill:var(--ink);letter-spacing:-.01em}.sysd-sub{font-family:var(--mono);font-size:11px;fill:var(--muted)}.sysd-node[role=button]{cursor:pointer;outline:none}.sysd-node[role=button]:hover rect{stroke:var(--muted)}.sysd-node[role=button]:focus-visible rect{stroke:var(--accent);stroke-width:2}.sysd-node.is-lit rect{fill:color-mix(in oklab,var(--accent) 12%,var(--raised));stroke:var(--accent);stroke-width:1.5}.machine{width:100%;max-width:560px;margin:0 auto;background:none}.machine-pair .machine{max-width:none}.machine svg{display:block;width:100%;height:auto}.machine-pair{display:grid;gap:var(--s3)}.machine-cap{padding:0 var(--s2);font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--muted)}@media (min-width: 640px){.machine-pair{grid-template-columns:1fr 1fr}}.instrument{overflow:hidden}.instrument-head,.hero-bar .instrument-fig{display:flex;align-items:center;gap:var(--s3)}.instrument-head{padding:var(--s3) var(--s4);border-bottom:1px solid var(--line)}.instrument-fig{font-family:var(--mono);font-size:var(--t-label);color:var(--muted);white-space:nowrap}.instrument-name{font-size:var(--t-caption);font-weight:var(--w-semibold);color:var(--ink)}.instrument-controls{display:flex;flex-wrap:wrap;gap:var(--s2);padding:var(--s3) var(--s4) 0}.instrument-body{padding:var(--s2)}.readings{display:grid;grid-template-columns:repeat(auto-fit,minmax(84px,1fr));margin:0;border-top:1px solid var(--line)}.readings>div{display:grid;gap:2px;padding:var(--s3) var(--s4);border-right:1px solid var(--line);margin-right:-1px}.readings dt{font-size:var(--t-label);color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.readings dd{margin:0;font-family:var(--mono);font-size:var(--t-caption);color:var(--text);font-variant-numeric:tabular-nums}.readings .is-lit dt{color:var(--accent);font-weight:var(--w-medium)}.readings .is-lit dd{color:var(--ink);font-weight:500}.instrument-read{padding:var(--s3) var(--s4);border-top:1px solid var(--line);font-size:var(--t-caption);color:var(--muted);line-height:1.5}.instrument-read strong{font-family:var(--mono);font-weight:500}.instrument-read a{margin-left:var(--s1);font-weight:var(--w-medium)}@media (max-width: 480px){.instrument-controls .seg{width:100%}.instrument-controls .seg-item{flex:1 0 auto}.readings{grid-template-columns:repeat(auto-fit,minmax(76px,1fr))}.readings>div{padding:var(--s2) var(--s3);border-bottom:1px solid var(--line);margin-bottom:-1px}}.lesson-head{display:grid;gap:var(--s4);justify-items:start;padding:clamp(32px,5vw,80px) 0 var(--s7)}.lesson-head .lead{max-width:34em}.crumbs{display:flex;flex-wrap:wrap;gap:var(--s2);font-size:var(--t-caption);color:var(--muted)}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--ink)}.plan{display:grid;gap:var(--s1);padding:var(--s2)}.plan-group{display:grid;gap:var(--s1);padding:var(--s2) 0;align-content:start}.plan-name{display:flex;flex-wrap:wrap;align-items:baseline;gap:var(--s1) var(--s3);padding:var(--s1) var(--s3);font-size:var(--t-caption);font-weight:var(--w-semibold);color:var(--ink)}.plan-name span{font-weight:var(--w-regular);color:var(--muted)}.plan-row{display:grid;grid-template-columns:16px minmax(0,1fr) auto;align-items:center;gap:var(--s3);min-height:44px;padding:var(--s1) var(--s3);border-radius:var(--r-md);color:var(--text);text-decoration:none;transition:background-color var(--fast) var(--ease)}.plan-row:hover{background:var(--sunk)}.plan-title{font-size:var(--t-small);font-weight:var(--w-medium);color:var(--ink);line-height:1.35}.plan-piece{font-size:var(--t-caption);color:var(--muted);text-align:right}.plan-row.is-now{background:var(--accent-wash, var(--sunk))}.plan-row.is-done .plan-title{color:var(--muted)}@media (min-width: 900px){.plan{grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:var(--s4)}.plan-group+.plan-group{border-left:1px solid var(--line);padding-left:var(--s4)}}@media (max-width: 480px){.plan-row{grid-template-columns:16px minmax(0,1fr);min-height:40px}.plan-piece{display:none}}.progress{position:sticky;top:calc(56px + var(--safe-top));z-index:10;margin:var(--s6) calc(-1 * var(--margin)) 0;padding:var(--s2) var(--margin) var(--s2);background:color-mix(in oklab,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.progress p{display:flex;gap:var(--s3);align-items:baseline;font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.progress .num{color:var(--muted)}.progress-bar{height:2px;margin-bottom:var(--s2);border-radius:2px;background:var(--line);overflow:hidden}.progress-bar span{display:block;height:100%;background:var(--accent);transform-origin:left;transition:transform var(--slow) var(--ease)}.lesson-grid{display:block}.rail{display:none}.column{min-width:0;max-width:760px}@media (min-width: 1100px){.progress{display:none}.lesson-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:var(--s9);margin-top:var(--s4)}.rail{display:block;position:sticky;top:88px;align-self:start;padding-top:var(--s8)}.rail ol{display:grid;gap:2px}.rail li.is-new-stage{margin-top:var(--s3);padding-top:var(--s3);border-top:1px solid var(--line)}.rail a{display:flex;align-items:center;gap:var(--s3);min-height:32px;padding:0 var(--s2);border-radius:var(--r-md);font-size:var(--t-caption);font-weight:var(--w-medium);color:var(--muted);text-decoration:none}.rail a:hover{background:var(--sunk);color:var(--ink)}.rail a.is-now{color:var(--ink);background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}.rail a.is-done{color:var(--text)}.rail-flag{margin-top:var(--s4);padding:0 var(--s2);font-size:var(--t-label);color:var(--faint)}}.stage-band{display:grid;gap:var(--s2);padding:var(--s9) 0 0}.stage-band .muted{max-width:var(--measure)}.step{padding-top:var(--s8);scroll-margin-top:120px}.step-title{font-size:var(--t-h3);line-height:1.25;letter-spacing:-.018em;margin-bottom:var(--s4)}.step-body{display:grid;gap:var(--s4);max-width:var(--measure)}.step-body p{color:var(--text)}.step-visual,.lesson-figure{margin-top:var(--s6)}.lesson-figure{margin-inline:0;padding:var(--s2);overflow:hidden}figure{margin:0}.say{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2) var(--s3);margin-top:var(--s5);padding:var(--s3) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:var(--t-small);font-weight:var(--w-medium);color:var(--ink)}.tex{overflow-x:auto;overflow-y:hidden;padding:var(--s3) var(--s4);border:1px solid var(--line);border-radius:var(--r-md);background:var(--raised);color:var(--ink)}.tex .katex-display{margin:0}.katex{font-size:1.06em}.checks{display:grid;gap:var(--s3)}.check{display:grid;gap:var(--s3);padding:var(--s5)}.check-question{font-weight:var(--w-semibold);color:var(--ink)}.check-options{display:grid;gap:var(--s2)}@media (min-width: 640px){.check-options{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}}.check-option{min-height:44px;padding:var(--s2) var(--s3);text-align:left;border:1px solid var(--line-strong);border-radius:var(--r-md);background:var(--raised);cursor:pointer;font-size:var(--t-small);color:var(--ink);line-height:1.35;transition:border-color var(--fast) var(--ease),background-color var(--fast) var(--ease),opacity var(--fast) var(--ease)}.check-option:hover{border-color:var(--muted)}.check-option.is-right{border-color:var(--right);background:color-mix(in oklab,var(--right) 10%,var(--raised))}.check-option.is-wrong{border-color:var(--wrong);background:color-mix(in oklab,var(--wrong) 9%,var(--raised))}.check-option.is-dim{opacity:.55}.check-why{font-size:var(--t-small)}.sources{padding:var(--s2);display:grid}.sources li{display:grid;gap:2px;padding:var(--s3)}.sources li+li{border-top:1px solid var(--line)}.sources a{font-weight:var(--w-medium)}.sources span{font-size:var(--t-caption);color:var(--muted)}.pager{display:grid;gap:var(--s3);grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));padding-top:var(--s9)}.pager-cell{display:grid;gap:var(--s1);padding:var(--s4) var(--s5);text-decoration:none;font-weight:var(--w-medium);color:var(--ink);transition:border-color var(--fast) var(--ease)}.pager-cell:hover{border-color:var(--line-strong)}.pager-cell:last-child:not(:first-child){text-align:right}.pager-hint{font-size:var(--t-label);font-weight:var(--w-regular);color:var(--muted)}.lesson-missing{display:grid;gap:var(--s4);justify-items:start;padding-top:var(--s10);min-height:60vh}.sys-section{display:grid;gap:var(--s5);padding-top:var(--s9)}.sys-side{display:grid;gap:var(--s2);align-content:start}.sys-main{display:grid;gap:var(--s4);min-width:0}@media (min-width: 960px){.sys-section{grid-template-columns:260px minmax(0,1fr);gap:var(--s9)}.sys-side{position:sticky;top:88px}}.swatches{display:grid;gap:var(--s3);grid-template-columns:repeat(auto-fill,minmax(min(100%,200px),1fr))}.swatch{display:grid;gap:var(--s2);padding:var(--s3)}.swatch-chips{display:grid;grid-template-columns:1fr 1fr;height:56px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}.swatch-name{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2);font-size:var(--t-small);font-weight:var(--w-semibold);color:var(--ink)}.swatch-use{font-size:var(--t-caption);color:var(--muted)}.type-specimen{display:grid;padding:var(--s2) var(--s4)}.type-row{display:grid;gap:var(--s2);padding:var(--s4) 0;min-width:0}.type-row+.type-row{border-top:1px solid var(--line)}.type-meta{display:flex;gap:var(--s3);font-size:var(--t-label);color:var(--muted)}.type-meta .num,.type-meta code{font-size:12px}.type-sample{color:var(--ink);line-height:1.3;letter-spacing:-.02em;overflow-wrap:anywhere}@media (min-width: 720px){.type-row{grid-template-columns:180px minmax(0,1fr);align-items:baseline}.type-meta{flex-direction:column;gap:2px}}.comp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}.comp{display:grid;gap:var(--s3);align-content:start;padding:var(--s5);border-bottom:1px solid var(--line);min-width:0}.comp-wide{grid-column:1 / -1}.comp:last-child{border-bottom:0}.comp-name{font-size:var(--t-label);font-weight:var(--w-medium);color:var(--muted)}.comp-row{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2)}.status-row span{display:inline-flex;align-items:center;gap:var(--s2);margin-right:var(--s3);font-size:var(--t-caption);color:var(--muted)}.mark-specimen{display:grid;place-items:center;padding:var(--s8) var(--s4)}.footer{margin-top:var(--s9);border-top:1px solid var(--line);padding-bottom:calc(var(--s6) + var(--safe-bottom))}.footer-inner{display:grid;gap:var(--s7);grid-template-columns:repeat(2,minmax(0,1fr));max-width:calc(var(--max) + 2 * var(--margin));margin:0 auto;padding:var(--s8) var(--margin) 0}.footer-brand{grid-column:1 / -1;display:grid;gap:var(--s3);align-content:start}.footer-brand p{font-size:var(--t-caption);color:var(--muted);max-width:26em}.footer-col{display:grid;gap:var(--s2);align-content:start}.footer-title{font-size:var(--t-caption);font-weight:var(--w-semibold);color:var(--ink)}.footer-col a{font-size:var(--t-caption);color:var(--muted);text-decoration:none;min-height:28px;display:inline-flex;align-items:center}.footer-col a:hover{color:var(--ink)}.footer-last{grid-template-columns:1fr;gap:var(--s2);padding-top:var(--s7);font-size:var(--t-label);color:var(--faint)}.credits,.footer-last span{font-size:var(--t-label);color:var(--muted)}.credits a{color:var(--muted)}@media (min-width: 800px){.footer-inner{grid-template-columns:2fr 1fr 1fr 1fr}.footer-brand{grid-column:auto}.footer-last{grid-template-columns:1fr auto;align-items:end}}@media (max-width: 720px){.hide-phone,.nav-links>a.hide-phone{display:none}.mark-word span{display:none}}.can-rise [data-rise]{opacity:0;transform:translateY(10px);transition:opacity var(--slow) var(--ease) var(--delay, 0ms),transform var(--slow) var(--ease) var(--delay, 0ms)}.can-rise.risen [data-rise]{opacity:1;transform:none}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition-duration:0ms!important;animation-duration:0ms!important}.can-rise [data-rise]{opacity:1;transform:none}}.comp>.seg{justify-self:start}