@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.25ieegmnh38ts.woff2)format("woff2"),url(../media/KaTeX_AMS-Regular.10y3kupq4t663.woff)format("woff"),url(../media/KaTeX_AMS-Regular.418dr7cz3fo2x.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.06b-ya9t43ioz.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Bold.2vmk2hva4ctha.woff)format("woff"),url(../media/KaTeX_Caligraphic-Bold.40ltxhe834pns.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.2eph4dlhid_m9.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Regular.3gxeetazf831f.woff)format("woff"),url(../media/KaTeX_Caligraphic-Regular.07-7u27-nhn_r.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.2sasz-d-jtw8y.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Bold.1alcy76__wdj2.woff)format("woff"),url(../media/KaTeX_Fraktur-Bold.19yqa_tc9d_gx.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.2d10y4xmjvzlf.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Regular.110oo81prr9n5.woff)format("woff"),url(../media/KaTeX_Fraktur-Regular.2qhy34r6a05dn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.3-rowy8o6_4ky.woff2)format("woff2"),url(../media/KaTeX_Main-Bold.0v1esh257kqpe.woff)format("woff"),url(../media/KaTeX_Main-Bold.0us_n0tnxlxu7.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.14r2naom8mrec.woff2)format("woff2"),url(../media/KaTeX_Main-BoldItalic.13355ck5zr48q.woff)format("woff"),url(../media/KaTeX_Main-BoldItalic.3x_u9cepaced0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.0lig0v9j0700p.woff2)format("woff2"),url(../media/KaTeX_Main-Italic.0afv392dj4w59.woff)format("woff"),url(../media/KaTeX_Main-Italic.2hkw3230mfwcv.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.1ryvsdzh2w1_e.woff2)format("woff2"),url(../media/KaTeX_Main-Regular.15u8r3b2y7fv4.woff)format("woff"),url(../media/KaTeX_Main-Regular.0symfa7dqj6jd.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.1oopuu636h4il.woff2)format("woff2"),url(../media/KaTeX_Math-BoldItalic.12pl58orkw9rg.woff)format("woff"),url(../media/KaTeX_Math-BoldItalic.0y5w36a5aq__2.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.32405s1aq8vas.woff2)format("woff2"),url(../media/KaTeX_Math-Italic.0w0b1ugh62cfr.woff)format("woff"),url(../media/KaTeX_Math-Italic.2vkekfblmz5nb.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.0h3wi2z_eouyg.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Bold.1ovw5p-yjp56g.woff)format("woff"),url(../media/KaTeX_SansSerif-Bold.2d03q85pwxpti.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.0wkjc4dm2kcit.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Italic.1qavw__2zz8gk.woff)format("woff"),url(../media/KaTeX_SansSerif-Italic.3i-q087b23-m8.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.2peiewu59z3d-.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Regular.1i4afx8nk8n4r.woff)format("woff"),url(../media/KaTeX_SansSerif-Regular.31pbu25feko_c.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.11h14300o9pd0.woff2)format("woff2"),url(../media/KaTeX_Script-Regular.3110jb9c-bxna.woff)format("woff"),url(../media/KaTeX_Script-Regular.28p_x7iz71ofe.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.03lhvx36ekcou.woff2)format("woff2"),url(../media/KaTeX_Size1-Regular.1slf4bh0hc6vm.woff)format("woff"),url(../media/KaTeX_Size1-Regular.1y57-ck23ey8c.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.14s5gg-puz6h-.woff2)format("woff2"),url(../media/KaTeX_Size2-Regular.0-kwyvx03omo8.woff)format("woff"),url(../media/KaTeX_Size2-Regular.2u0s-b07k2o9m.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.1n1rgzz84z8r9.woff2)format("woff2"),url(../media/KaTeX_Size3-Regular.04o9a_02gu_e8.woff)format("woff"),url(../media/KaTeX_Size3-Regular.1pkn-dge4q0fv.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.2sgotkdv3dcyv.woff2)format("woff2"),url(../media/KaTeX_Size4-Regular.3p2r1l7xmebxv.woff)format("woff"),url(../media/KaTeX_Size4-Regular.2uelkfk2yna5e.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.11gr2d2wuwz77.woff2)format("woff2"),url(../media/KaTeX_Typewriter-Regular.12f8myjij3617.woff)format("woff"),url(../media/KaTeX_Typewriter-Regular.3nee9kjfy6nm8.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;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 .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.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 .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{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 .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{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 .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.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 .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}
:root{--bg:#f4f2ee;--fg:#1a1916;--muted:#6a675f;--faint:#9a968b;--border:#e4e1d8;--line-strong:#d8d4c8;--card:#fbfaf7;--surface:#fbfaf7;--sunken:#eceae4;--accent:#4c5bd4;--gold:#9a7714;--hover:#eceae4;--cat-tech:#4c5bd4;--cat-tech-w:#ecedfb;--cat-science:#0e8c6e;--cat-science-w:#e2f2ec;--cat-world:#b25000;--cat-world-w:#fbefe0;--serif:"Newsreader", "Source Serif 4", Georgia, serif;--ui:"Geist", "Inter", system-ui, sans-serif;--maxw:760px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);font-feature-settings:"ss01";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-wrap:pretty;margin:0;padding:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.page{max-width:var(--maxw);margin:0 auto;padding:3rem 1.25rem 5rem}.home{max-width:980px}.masthead{text-align:center;border-bottom:3px double var(--line-strong);margin-bottom:0;padding:1.5rem 0 1rem}.masthead-eyebrow{font-family:var(--ui);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:.7rem;font-size:.7rem;font-weight:600}.masthead-links{font-family:var(--ui);justify-content:center;align-items:center;gap:1.1rem;margin-top:.9rem;font-size:.85rem;display:flex}.masthead-links .kb-link{color:var(--accent);font-weight:500}.masthead-links .review-rail{color:var(--muted)}.wordmark{font-family:var(--serif);letter-spacing:-.02em;font-optical-sizing:auto;margin:0;font-size:2.4rem;font-weight:400}.tagline{font-family:var(--serif);color:var(--muted);margin:.5rem 0 0;font-size:1.1rem}.search-wrap{max-width:520px;margin:0 auto 2.5rem}.search{border:1px solid var(--border);background:var(--bg);border-radius:999px;outline:none;width:100%;padding:.8rem 1.1rem;font-size:1rem;transition:box-shadow .15s,border-color .15s;box-shadow:0 1px 4px #0000000a}.search:focus{border-color:#d6dae0;box-shadow:0 1px 10px #00000014}.section{margin-bottom:2.25rem}.section-title{font-family:var(--ui);text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:0 0 .9rem;font-size:.74rem;font-weight:700}.cards{flex-direction:column;gap:.25rem;display:flex}.card{border-radius:12px;padding:.95rem 1rem;transition:background .12s;display:block}.card:hover{background:var(--hover)}.card-headline{font-family:var(--serif);letter-spacing:-.01em;margin:0 0 .3rem;font-size:1.2rem;font-weight:500;line-height:1.25}.card-why{color:var(--muted);margin:0 0 .4rem;font-size:.95rem}.card-meta{color:var(--faint);font-size:.8rem}.card-dot{margin:0 .4rem}.card-tier{color:var(--muted)}.empty{text-align:center;color:var(--muted);padding:3rem 0}.new-since{border:1px solid var(--border);background:#f3f8ff;border-radius:12px;justify-content:space-between;align-items:center;gap:1rem;max-width:520px;margin:0 auto 1.25rem;padding:.6rem .9rem;display:flex}.caughtup-btn{border:1px solid var(--border);background:var(--bg);color:var(--muted);cursor:pointer;border-radius:999px;padding:.35rem .8rem;font-size:.82rem}.caughtup-btn:hover{color:var(--fg)}.new-badge{vertical-align:middle;text-transform:uppercase;letter-spacing:.04em;color:var(--accent);background:#eef4ff;border-radius:5px;margin-right:.45rem;padding:.05rem .4rem;font-size:.66rem;font-weight:600;display:inline-block}.back{color:var(--muted);margin-bottom:1.5rem;font-size:.9rem;display:inline-block}.back:hover{color:var(--accent)}.item-kicker{color:var(--faint);text-transform:uppercase;letter-spacing:.06em;align-items:center;gap:.6rem;margin-bottom:.6rem;font-size:.8rem;display:flex}.item-headline{font-family:var(--serif);letter-spacing:-.02em;font-optical-sizing:auto;margin:0 0 1rem;font-size:2.5rem;font-weight:400;line-height:1.1}.item-why{font-family:var(--serif);color:var(--fg);margin:0 0 1rem;font-size:1.25rem;line-height:1.5}.item-summary{color:var(--muted);margin:0 0 2rem}.sources{border-top:1px solid var(--border);padding-top:1.25rem}.sources-title,.learn .learn-btn{font-size:.8rem}.sources-title{text-transform:uppercase;letter-spacing:.08em;color:var(--faint);margin:0 0 .6rem;font-weight:600}.sources-list{margin:0;padding-left:1.1rem}.sources-list li{margin-bottom:.4rem}.sources-list a{color:var(--accent)}.source-domain{color:var(--faint);font-size:.85rem}.muted{color:var(--muted)}.learn{margin-top:2rem}.learn-btn{border:1px solid var(--border);background:var(--hover);color:var(--muted);cursor:not-allowed;border-radius:999px;padding:.65rem 1.1rem;font-weight:600}.learn-btn-active{background:var(--accent);border-color:var(--accent);color:#fff;cursor:pointer;transition:opacity .15s}.learn-btn-active:hover{opacity:.92}.learn-btn-active:disabled{opacity:.6;cursor:progress}.learn-note{color:var(--faint);margin:.5rem 0 0;font-size:.85rem}.learn-error{color:#b3261e;margin:.5rem 0 0;font-size:.85rem}.learned{border-top:1px solid var(--border);margin-top:2.5rem;padding-top:1.5rem}.learned-title{text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin:0 0 1.25rem;font-size:.8rem;font-weight:600}.ex-section{margin-bottom:1.5rem}.ex-title{font-family:var(--serif);letter-spacing:-.01em;margin:0 0 .5rem;font-size:1.32rem;font-weight:400;line-height:1.2}.ex-body{color:var(--fg);margin:0;line-height:1.65}.ex-points{color:var(--fg);margin:0;padding-left:1.1rem}.ex-points li{margin-bottom:.3rem}.rich .para{margin:0 0 .7rem;line-height:1.65}.rich .para:last-child{margin-bottom:0}.rich .para>a,.rich .para>span{display:inline}.portal-link{color:var(--accent);border-bottom:1px solid #1a73e840}.portal-link:hover{border-bottom-color:var(--accent)}.teach-link{font:inherit;color:var(--accent);cursor:pointer;background:0 0;border:none;border-bottom:1px dotted #1a73e88c;margin:0;padding:0;transition:border-bottom-color .15s}.teach-link:hover{border-bottom-color:var(--accent)}.teach-link-pending{color:var(--muted);cursor:progress;border-bottom-color:var(--faint)}.teach-link-cue{color:var(--muted);font-size:.85em}.connects-line{color:var(--muted);margin:1.5rem 0 0;font-size:.95rem}.learn-next{margin:1.25rem 0 0}.learn-next-title{text-transform:uppercase;letter-spacing:.04em;color:var(--faint);margin:0 0 .6rem;font-size:.8rem;font-weight:600}.learn-next-chips{flex-wrap:wrap;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.next-chip{font:inherit;color:var(--accent);border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:999px;padding:.3rem .75rem;font-size:.92rem;line-height:1.2;transition:border-color .15s,background .15s;display:inline-block}.next-chip:hover{border-color:var(--accent);background:var(--hover)}.next-chip-teach{border-style:dashed}.next-chip-muted{color:var(--muted);cursor:default}.concept-visual{margin:1.5rem 0 0}.visual-frame{border:1px solid var(--border);background:#fff;border-radius:12px;width:100%;height:440px;display:block}.visual-loading{height:200px;color:var(--muted);border-style:dashed;justify-content:center;align-items:center;font-size:.9rem;display:flex}.check-yourself{margin-top:1.6rem}.recall-card{border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:12px 14px}.recall-q{margin:0 0 6px;font-size:.95rem;font-weight:600}.recall-a{color:#3a3f45;border-left:3px solid var(--accent);margin:6px 0 0;padding-left:12px;font-size:.9rem}.recall-reveal{font:inherit;color:var(--accent);border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:8px;padding:5px 11px;font-size:.82rem}.recall-rate{flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;display:flex}.recall-rate-label{color:var(--muted);margin-right:4px;font-size:.85rem}.recall-chip{font:inherit;color:var(--accent);border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:999px;padding:5px 12px;font-size:.82rem;transition:border-color .15s,background .15s}.recall-chip:hover:not(:disabled){border-color:var(--accent);background:var(--hover)}.recall-chip:disabled{color:var(--muted);cursor:progress}.recall-done{color:#0a7d52;margin-top:10px;font-size:.88rem}.review-rail{color:var(--accent);margin-top:8px;font-size:.85rem;display:inline-block}.adaptive-context{margin-top:1.25rem}.adaptive-line{color:var(--muted);margin:4px 0;font-size:.88rem}.adaptive-label{color:var(--fg);font-weight:600}.worked-ladder{margin-top:1.5rem}.ladder-step{border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:12px 14px}.ladder-step.ladder-try{background:var(--hover)}.ladder-label{text-transform:uppercase;letter-spacing:.04em;color:var(--faint);font-size:.72rem;font-weight:700}.ladder-text{color:#3a3f45;white-space:pre-wrap;margin:6px 0 0;font-size:.9rem}.concept-bridges{margin-top:1.5rem}.bridges-list{margin:6px 0 0;padding:0;list-style:none}.bridge-item{color:#3a3f45;border-left:3px solid var(--border);margin:6px 0;padding-left:14px;font-size:.9rem}.ask-about{margin-top:1.5rem}.ask-thread{margin:6px 0 12px}.ask-exchange{border-left:3px solid var(--accent);margin:10px 0;padding:2px 0 2px 12px}.ask-q{margin:0 0 4px;font-size:.9rem;font-weight:600}.ask-a{color:#3a3f45;white-space:pre-wrap;margin:0;font-size:.9rem}.ask-presets{flex-wrap:wrap;gap:6px;margin:6px 0;display:flex}.ask-chip{font:inherit;color:var(--accent);border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:999px;padding:5px 11px;font-size:.8rem}.ask-chip:hover:not(:disabled){border-color:var(--accent);background:var(--hover)}.ask-chip:disabled{color:var(--muted);cursor:progress}.ask-form{gap:8px;margin-top:8px;display:flex}.ask-input{font:inherit;border:1px solid var(--border);border-radius:8px;flex:1;padding:8px 12px;font-size:.88rem}.ask-input:focus{border-color:var(--accent);outline:none}.ask-submit{font:inherit;color:#fff;background:var(--accent);border:1px solid var(--accent);cursor:pointer;border-radius:8px;padding:8px 16px;font-size:.85rem}.ask-submit:disabled{opacity:.5;cursor:default}.ask-pending{color:var(--muted);margin:8px 0 0;font-size:.82rem}.ask-error{color:#9a4a4a;margin:8px 0 0;font-size:.82rem}.featured{border:1px solid var(--border);background:var(--card);border-radius:16px;margin:0 0 30px;padding:26px 30px;transition:box-shadow .2s,border-color .2s;display:block;box-shadow:0 10px 30px -20px #0003}.featured:hover{border-color:#d9cdb2;box-shadow:0 16px 42px -20px #00000042}.featured-kicker{align-items:center;gap:10px;margin-bottom:12px;display:flex}.featured-label{text-transform:uppercase;letter-spacing:.14em;color:var(--accent);font-size:.7rem;font-weight:700}.featured-cat{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem}.featured-headline{font-family:var(--serif);letter-spacing:-.02em;font-optical-sizing:auto;color:var(--fg);margin:0 0 14px;font-size:2.2rem;font-weight:400;line-height:1.1}.featured-why{font-family:var(--serif);color:#3a3328;margin:0 0 12px;font-size:1.18rem;line-height:1.5}.featured-summary{color:var(--muted);margin:0 0 16px;font-size:.94rem}.featured-foot{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.featured-meta{color:var(--muted);align-items:center;gap:6px;font-size:.82rem;display:flex}.featured-cta{color:var(--accent);font-size:.9rem;font-weight:600}.library{max-width:none;padding:3rem clamp(24px,5vw,64px) 5rem}.library .wordmark.library-title{font-family:var(--serif)}.shelf{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:30px;max-width:1320px;margin:0 auto;padding:6px 0 48px;display:grid}.book{aspect-ratio:192/270;border-radius:6px;flex-direction:column;width:100%;text-decoration:none;transition:transform .3s,box-shadow .3s;display:flex;position:relative;overflow:hidden;box-shadow:0 18px 40px -18px #0000008c}.book:hover{transform:translateY(-4px);box-shadow:0 28px 60px -20px #00000080}.book-black{--gold:#d4af37;--gold-faint:#c9a45fb3;--frame:#c9a45f29;background:#1a1410}.book-brown{--gold:#e3c074;--gold-faint:#d4b16ab8;--frame:#d4b16a33;background:#33231a}.book-spine{background:#00000059;width:10px;position:absolute;top:0;bottom:0;left:0;box-shadow:inset -1px 0 #ffffff0d}.book-frame{border:1px solid var(--frame);pointer-events:none;border-radius:3px;position:absolute;inset:8px 8px 8px 15px}.book-ornament{color:var(--gold-faint);font-family:Georgia,serif;font-size:1rem;line-height:1;position:absolute;top:9px;right:13px}.book-medallion{z-index:1;flex:1;justify-content:center;align-items:center;padding-left:10px;display:flex;position:relative}.book-medallion:before{content:"";border:1px solid var(--gold);opacity:.4;border-radius:50%;width:80px;height:80px;position:absolute;box-shadow:0 0 26px #d4af371f}.book:hover .book-medallion:before{box-shadow:0 0 38px #d4af3733}.book-monogram{font-family:var(--serif);font-optical-sizing:auto;color:var(--gold);letter-spacing:.02em;font-size:2.1rem;font-weight:400}.book-titleblock{z-index:1;padding:0 16px 16px 19px;position:relative}.book-shelf{text-transform:uppercase;letter-spacing:.26em;color:var(--gold-faint);font-size:.58rem;font-weight:600;display:block}.book-title{font-family:var(--serif);color:var(--gold);margin-top:5px;font-size:1.12rem;font-weight:500;line-height:1.2;display:block}.book-rule{background:var(--gold-faint);width:24px;height:1px;margin-top:8px;display:block}.book-meta{color:var(--gold-faint);font-variant-numeric:tabular-nums;align-items:center;gap:8px;margin-top:8px;font-size:.62rem;display:flex}.book-meter{background:#ffffff24;border-radius:2px;flex:1;height:2px;position:relative;overflow:hidden}.book-meter-fill{background:var(--gold);opacity:.85;border-radius:2px;position:absolute;top:0;bottom:0;left:0}.subject-interior>.back,.subject-interior>.subject-head,.subject-interior>.subject-topic,.subject-interior>.empty{max-width:820px;margin-left:auto;margin-right:auto}.subject-interior .subject-head{text-align:center;margin:6px 0 30px}.subject-monogram{color:#9c7a1a;width:58px;height:58px;font-family:var(--serif);border:1px solid #c2a14e;border-radius:50%;justify-content:center;align-items:center;margin-bottom:12px;font-size:1.5rem;display:inline-flex}.subject-title{font-family:var(--serif);letter-spacing:-.01em;color:var(--fg);margin:0;font-size:1.95rem}.subject-sub{color:var(--muted);margin:4px 0 0}.subject-topic{margin:24px 0}.subject-topic-title{font-family:var(--serif);color:#6b5836;border-bottom:1px solid var(--border);margin:0 0 12px;padding-bottom:6px;font-size:1.05rem}.subject-concepts{flex-direction:column;gap:8px;display:flex}.subject-concept{border:1px solid var(--border);background:#fff;border-radius:10px;padding:12px 14px;text-decoration:none;transition:border-color .15s,background .15s;display:block}.subject-concept:hover{border-color:var(--accent);background:var(--hover)}.subject-concept-title{color:var(--fg);font-size:.95rem;font-weight:600;display:block}.subject-concept-sum{color:var(--muted);margin-top:3px;font-size:.84rem;display:block}.subject-layer{margin:0 0 32px}.subject-layer-title{font-family:var(--serif);color:#6b5836;border-bottom:1px solid var(--border);align-items:baseline;gap:10px;margin:0 0 14px;padding-bottom:6px;font-size:1.1rem;display:flex}.subject-layer-count{color:var(--muted);font-variant-numeric:tabular-nums;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.72rem}.subject-learnnext{margin:40px 0 0;padding-top:8px}.subject-learnnext-dek{color:var(--muted);margin:0 0 14px;font-size:.9rem}.learnnext-chips{flex-wrap:wrap;gap:8px;display:flex}.learnnext-chip{border:1px solid var(--border);background:var(--card);color:var(--accent);border-radius:999px;padding:7px 13px;font-size:.88rem;transition:background .14s}.learnnext-chip:hover{background:var(--hover);text-decoration:none}.visualize{margin:1.25rem 0 0}.visualize-btn{font:inherit;color:var(--accent);border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:999px;padding:.4rem .9rem;font-size:.92rem;transition:border-color .15s,background .15s}.visualize-btn:hover:not(:disabled){border-color:var(--accent);background:var(--hover)}.visualize-btn:disabled{color:var(--muted);cursor:progress}.concept-links{margin:0;padding-left:1.1rem}.concept-links li{margin-bottom:.3rem}.kb-link{color:var(--accent);margin-top:.6rem;font-size:.9rem;display:inline-block}.masthead-links{justify-content:center;gap:1.25rem;display:flex}.tb-coverage{color:var(--faint);margin:-.4rem 0 1rem;font-size:.85rem}.tb-topic{margin:0 0 1.4rem}.tb-topic-title{letter-spacing:-.01em;margin:0 0 .5rem;font-size:.95rem;font-weight:600}.tb-list{color:var(--fg);margin:0;padding-left:1.3rem}.tb-list li{margin-bottom:.35rem}.tb-link{color:var(--fg)}.tb-link:hover{color:var(--accent)}.tb-tag{color:var(--faint);margin-left:.5rem;font-size:.7rem}.tb-nav{border-top:1px solid var(--border);justify-content:space-between;gap:1rem;margin-top:2.5rem;padding-top:1.25rem;font-size:.9rem;display:flex}.tb-nav-link{color:var(--muted);max-width:45%}.tb-nav-link:hover{color:var(--accent)}.tb-nav-next{text-align:right;margin-left:auto}.math-inline{display:inline-block}.math-inline .katex{font-size:1.04em}.math-display{text-align:center;margin:16px 0;overflow:auto hidden}.math-display .katex-display{margin:0}.code-block{color:#e6e3da;background:#1a1b22;border-radius:10px;margin:16px 0;padding:16px 18px;font-family:SF Mono,ui-monospace,Menlo,Consolas,monospace;font-size:.84rem;line-height:1.65;position:relative;overflow-x:auto;box-shadow:inset 0 1px #ffffff0d}.code-block code.hljs{color:inherit;font:inherit;background:0 0;padding:0;display:block}.code-block[data-lang]:not([data-lang=""]):after{content:attr(data-lang);letter-spacing:.08em;text-transform:uppercase;color:#6b7280;font-size:.6rem;position:absolute;top:8px;right:12px}.hljs-keyword,.hljs-built_in,.hljs-literal{color:#c4a0ff}.hljs-title,.hljs-title.function_,.hljs-section{color:#82aaff}.hljs-string,.hljs-meta .hljs-string{color:#9fd89a}.hljs-comment,.hljs-quote{color:#6b7280;font-style:italic}.hljs-number,.hljs-symbol{color:#f0936a}.hljs-attr,.hljs-attribute,.hljs-variable,.hljs-template-variable{color:#e6e3da}.hljs-type,.hljs-class .hljs-title{color:#82aaff}.hljs-name,.hljs-tag{color:#c4a0ff}.socratic{margin-top:1.6rem}.socratic-heading{font-family:var(--ui,inherit);text-transform:uppercase;letter-spacing:.06em;color:#7a52c9;margin:0 0 14px;font-size:.78rem;font-weight:600}.socratic-list{flex-direction:column;gap:16px;margin:0;padding:0;list-style:none;display:flex}.socratic-step{border-left:2px solid #7a52c940;padding-left:16px}.socratic-q{margin:0 0 8px;font-size:.98rem;font-weight:600;line-height:1.5}.socratic-n{color:#fff;vertical-align:1px;background:#7a52c9;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;margin-right:9px;font-size:.7rem;font-weight:700;display:inline-flex}.socratic-reveal{font:inherit;color:var(--accent);border:1px solid var(--line,var(--border));cursor:pointer;background:0 0;border-radius:8px;padding:5px 12px;font-size:.82rem}.socratic-i{color:#3a3328;margin:8px 0 0;font-size:.95rem;line-height:1.6}.cat-thumb{border:1px solid var(--border);border-radius:11px;flex:0 0 76px;justify-content:center;align-items:center;width:76px;height:76px;display:flex;overflow:hidden}.cat-thumb svg{width:74%;height:74%}.cat-thumb.cat-tech{background:var(--cat-tech-w)}.cat-thumb.cat-science{background:var(--cat-science-w)}.cat-thumb.cat-world{background:var(--cat-world-w)}.cat-thumb.cat-hero{background:0 0;border:none;flex:none;width:64%;height:64%}.cat-thumb.cat-hero svg{width:100%;height:100%}.lead{border-bottom:1px solid var(--border);grid-template-columns:1.1fr .9fr;align-items:center;gap:36px;padding:2rem 0;display:grid}@media (max-width:720px){.lead{grid-template-columns:1fr;gap:1.2rem}.lead-art{display:none}}.lead-kicker{flex-wrap:wrap;align-items:center;gap:9px;margin-bottom:.7rem;display:flex}.lead-biggest{font-family:var(--ui);letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-size:.68rem;font-weight:700}.lead-cat{font-family:var(--ui);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-size:.68rem}.lead-new{font-family:var(--ui);letter-spacing:.06em;text-transform:uppercase;color:#fff;background:var(--accent);border-radius:5px;padding:2px 7px;font-size:.62rem;font-weight:700}.lead-headline{font-family:var(--serif);letter-spacing:-.022em;font-optical-sizing:auto;margin:0 0 .7rem;font-size:clamp(28px,3.6vw,40px);font-weight:400;line-height:1.06;transition:color .15s}.lead:hover .lead-headline{color:var(--accent)}.lead-why{font-family:var(--serif);color:#3a3328;max-width:42ch;margin:0 0 1rem;font-size:1.15rem;line-height:1.5}.lead-foot{font-family:var(--ui);color:var(--muted);flex-wrap:wrap;align-items:center;gap:12px;font-size:.82rem;display:flex}.lead-cta{color:var(--accent);margin-left:auto;font-weight:600}.lead-art{aspect-ratio:5/4;border:1px solid var(--border);background:radial-gradient(120% 90% at 70% 20%, #fbf8f1 0%, var(--surface) 60%, var(--sunken) 100%);border-radius:14px;justify-content:center;align-items:center;display:flex;box-shadow:0 1px 2px #14120e0a,0 14px 36px -22px #14120e38}.new-since{font-family:var(--ui);flex-wrap:wrap;align-items:center;gap:14px;margin:1.2rem 0 0;display:flex}.new-since-label{color:var(--accent);font-size:.9rem;font-weight:500}.feed-section{border-top:1px solid var(--border);margin-top:1.4rem;padding:1.5rem 0 .3rem}.feed-section-head{align-items:center;gap:10px;margin-bottom:.8rem;display:flex}.sec-tab{border-radius:3px;width:9px;height:9px}.feed-section-title{font-family:var(--ui);letter-spacing:.12em;text-transform:uppercase;color:var(--fg);margin:0;font-size:.74rem;font-weight:700}.sec-count{font-family:var(--ui);color:var(--faint);font-variant-numeric:tabular-nums;font-size:.68rem}.feed-stories{flex-direction:column;display:flex}.feed-story{border-radius:12px;align-items:flex-start;gap:18px;padding:1rem .7rem 1rem 0;transition:background .12s;display:flex}.feed-story:hover{background:var(--surface)}.feed-story+.feed-story{border-top:1px solid var(--border)}.story-rank{font-family:var(--serif);color:var(--faint);margin-top:1.5rem;font-size:.92rem;font-style:italic}.story-body{flex:1;min-width:0}.story-title{font-family:var(--serif);letter-spacing:-.012em;margin:0 0 .3rem;font-size:1.25rem;font-weight:500;line-height:1.18;transition:color .15s}.feed-story:hover .story-title{color:var(--accent)}.story-why{color:var(--muted);max-width:64ch;margin:0 0 .5rem;font-size:.9rem;line-height:1.48}.story-meta{font-family:var(--ui);color:var(--faint);flex-wrap:wrap;align-items:center;gap:8px;font-size:.75rem;display:flex}.meta-new{color:var(--accent);font-weight:600}.story-dot{color:var(--faint)}.page.detail{max-width:860px}.detail-cols{display:block}.detail-main{min-width:0}.detail-aside{border-top:1px solid var(--border);flex-direction:column;gap:22px;margin-top:2.5rem;padding-top:1.5rem;display:flex}.detail-aside .sources{border-top:none;padding-top:0}.detail-aside .connects-line{margin:0}.learn-anything{max-width:660px;margin:0 auto 2.5rem}.la-row{gap:8px;display:flex}.la-input{min-width:0;font:inherit;border:1px solid var(--border);background:var(--card);color:var(--fg);border-radius:999px;outline:none;flex:1;padding:.85rem 1.2rem;font-size:1rem;transition:box-shadow .15s,border-color .15s;box-shadow:0 1px 4px #0000000a}.la-input:focus{border-color:var(--accent);box-shadow:0 1px 12px #4c5bd424}.la-btn{font:inherit;color:#fff;background:var(--accent);cursor:pointer;white-space:nowrap;border:none;border-radius:999px;padding:0 1.5rem;font-size:.95rem;font-weight:600;transition:opacity .15s}.la-btn:hover:not(:disabled){opacity:.92}.la-btn:disabled{opacity:.55;cursor:progress}.la-note{text-align:center;color:var(--muted);margin:.7rem 0 0;font-size:.85rem}.la-error{text-align:center;color:#b3261e;margin:.7rem 0 0;font-size:.85rem}.learned-teaser{color:var(--muted);margin:0 0 1.4rem;font-size:1.05rem;line-height:1.7}.full-lesson-cta{color:#fff;background:var(--accent);border-radius:999px;align-items:center;gap:8px;padding:.78rem 1.5rem;font-size:1rem;font-weight:600;text-decoration:none;transition:opacity .15s;display:inline-flex}.full-lesson-cta:hover{opacity:.92;text-decoration:none}
