@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.3dqqgop8d9q74.woff2)format("woff2"),url(../media/KaTeX_AMS-Regular.3s3485bbs_y9t.woff)format("woff"),url(../media/KaTeX_AMS-Regular.06540o8ttgt08.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.0x398dszol8ix.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Bold.0i0ys3pk95qm_.woff)format("woff"),url(../media/KaTeX_Caligraphic-Bold.071y7fj7dknco.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.3ittfn7d21b9w.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Regular.3-a7ahrnv-1p0.woff)format("woff"),url(../media/KaTeX_Caligraphic-Regular.2a29kziuqmcwj.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.3rq09ohrtely_.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Bold.1m6-2-v71aefh.woff)format("woff"),url(../media/KaTeX_Fraktur-Bold.2c272neyw5p5h.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.1jvgec053-2og.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Regular.1pa447q_ni5m2.woff)format("woff"),url(../media/KaTeX_Fraktur-Regular.0_16ta522mcvb.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.22wkahef0u3fd.woff2)format("woff2"),url(../media/KaTeX_Main-Bold.1fyzqvxw_mkks.woff)format("woff"),url(../media/KaTeX_Main-Bold.3q46h05c4j0cw.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.40drhxm0mwrzz.woff2)format("woff2"),url(../media/KaTeX_Main-BoldItalic.0g_mm5w89az4z.woff)format("woff"),url(../media/KaTeX_Main-BoldItalic.2r19jqj9qb5v7.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.1ck6crdmp78cu.woff2)format("woff2"),url(../media/KaTeX_Main-Italic.3h-lyz6-tj-5j.woff)format("woff"),url(../media/KaTeX_Main-Italic.07vrczmwpvimc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.29zz7337tzymc.woff2)format("woff2"),url(../media/KaTeX_Main-Regular.0r86ux5c2_9jc.woff)format("woff"),url(../media/KaTeX_Main-Regular.0cm4nk2aib81i.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.0u_6s571--hh0.woff2)format("woff2"),url(../media/KaTeX_Math-BoldItalic.1-f92ydojzao_.woff)format("woff"),url(../media/KaTeX_Math-BoldItalic.0m2qm2_orz99k.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.18dmviy-uianu.woff2)format("woff2"),url(../media/KaTeX_Math-Italic.2d-roszuwfrpn.woff)format("woff"),url(../media/KaTeX_Math-Italic.1vw7gcigzv33_.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.19n5ohjzvq40z.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Bold.1ad0dh55v7-4h.woff)format("woff"),url(../media/KaTeX_SansSerif-Bold.3ojskmd7zv_b8.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.38w085lqrghwm.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Italic.0_21g6aey40vy.woff)format("woff"),url(../media/KaTeX_SansSerif-Italic.0abd80e_ako5h.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.3w8wtfek3qsk6.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Regular.0v2olaztuqa1v.woff)format("woff"),url(../media/KaTeX_SansSerif-Regular.0xkeldfcfvj58.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.10h737unm2jp7.woff2)format("woff2"),url(../media/KaTeX_Script-Regular.2m7-0wua2lvnq.woff)format("woff"),url(../media/KaTeX_Script-Regular.1hw1d7omwtnoy.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.3xype_vsmmjgw.woff2)format("woff2"),url(../media/KaTeX_Size1-Regular.3aliq3yd-ja9b.woff)format("woff"),url(../media/KaTeX_Size1-Regular.44z_qgcc9t0a_.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.2-wakugslvf3a.woff2)format("woff2"),url(../media/KaTeX_Size2-Regular.3u0df62zf5guy.woff)format("woff"),url(../media/KaTeX_Size2-Regular.3eprswoc9v3fh.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.1nfuh3l6nzhjv.woff2)format("woff2"),url(../media/KaTeX_Size3-Regular.3n7wm08wz2r2g.woff)format("woff"),url(../media/KaTeX_Size3-Regular.2kp2izz6g7r-7.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.13pyt7zi482pb.woff2)format("woff2"),url(../media/KaTeX_Size4-Regular.37jvrh2wknf5u.woff)format("woff"),url(../media/KaTeX_Size4-Regular.2ltjhs9xhaefy.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.2vfnlegjq9l42.woff2)format("woff2"),url(../media/KaTeX_Typewriter-Regular.0xi5kyeeydv4z.woff)format("woff"),url(../media/KaTeX_Typewriter-Regular.34aedpl-_o3h3.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:"0.16.47"}.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{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#080a09;--surface:#111412;--surface-2:#181c19;--surface-3:#1d221e;--line:#29312c;--line-strong:#465249;--text:#edf4ef;--text-2:#b2beb6;--text-3:#829087;--text-inverse:#07110d;--green:#62d5aa;--green-hover:#83e0bd;--green-dark:#174d3b;--green-soft:#132a22;--green-text:#96e7c8;--coral:#ff8a74;--coral-soft:#321d1a;--coral-text:#ffad9c;--blue:#78aee8;--blue-soft:#172537;--blue-text:#a9cff7;--yellow:#e8bc62;--yellow-soft:#302817;--yellow-text:#f1cf86;--focus:#73aaff;--ink:var(--text);--muted:var(--text-2);--paper:var(--surface);--canvas:var(--bg);--radius-sm:10px 10px 10px 4px;--radius:16px 16px 16px 6px;--radius-lg:24px 24px 24px 8px;--radius-full:999px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--fs-xs:.8125rem;--fs-sm:.875rem;--fs-md:1rem;--fs-body:1.0625rem;--fs-lg:1.125rem;--fs-xl:1.375rem;--fs-2xl:1.75rem;--fs-3xl:2.25rem;--fs-4xl:clamp(2.5rem, 5vw, 4.25rem);--lh-tight:1.1;--lh-snug:1.3;--lh-body:1.6;--lh-loose:1.75;--track-caps:.06em;--font-sans:Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-serif:Georgia, "Times New Roman", "Noto Serif", serif;--font-math:KaTeX_Main, "Times New Roman", serif;--shadow-1:0 1px 2px #00000052, 0 1px 4px #0003;--shadow-2:0 8px 24px #00000047;--shadow-3:0 24px 60px #0000006b;--shadow:var(--shadow-3);--container:1180px;--gutter:clamp(16px, 4vw, 48px);--tap:44px;--topbar-h:64px;--tabbar-h:60px}*{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-color:var(--line-strong) var(--bg)}::selection{background:var(--green-soft);color:var(--text)}body{background:radial-gradient(circle at 8% 2%, #26664b33, transparent 28rem), var(--bg);color:var(--text);font-family:var(--font-sans);font-size:var(--fs-md);line-height:var(--lh-body);font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;margin:0}button,input,select{font:inherit;accent-color:var(--green)}a{color:inherit}h1,h2,h3{text-wrap:balance}.root-shell{min-height:100vh}.root-shell>main{width:min(var(--container), calc(100% - var(--gutter) * 2));padding-bottom:var(--space-8);margin:0 auto}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.topbar{z-index:20;width:min(var(--container), calc(100% - var(--gutter) * 2));height:var(--topbar-h);align-items:center;gap:var(--space-6);border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#080a09e6;margin:0 auto;display:flex;position:sticky;top:0}.logo{align-items:center;gap:var(--space-2);color:var(--text);font-family:var(--font-serif);font-size:var(--fs-xl);letter-spacing:-.02em;font-weight:700;text-decoration:none;display:inline-flex}.logo-mark{border-radius:var(--radius-sm);background:var(--green);width:34px;height:34px;color:var(--text-inverse);font-family:var(--font-serif);box-shadow:var(--shadow-2);place-items:center;font-size:20px;display:grid}.main-nav{gap:var(--space-5);display:flex}.main-nav a{color:var(--text-2);font-size:var(--fs-sm);font-weight:650;text-decoration:none;transition:color .16s}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--green)}.auth{margin-left:auto}.profile-chip{align-items:center;gap:var(--space-2);display:flex}.profile-avatar{background:var(--coral-soft);width:38px;height:38px;color:var(--coral-text);font-family:var(--font-serif);border-radius:50%;place-items:center;font-weight:800;display:grid}.profile-copy{flex-direction:column;line-height:1.2;display:flex}.profile-copy strong{font-size:var(--fs-xs)}.profile-copy small,.auth-placeholder{color:var(--text-2);font-size:var(--fs-xs)}.auth-buttons{gap:var(--space-2);display:flex}.tabbar{z-index:30;height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--line);background:var(--surface);grid-template-columns:repeat(4,1fr);display:none;position:fixed;bottom:0;left:0;right:0}.tabbar a{min-height:var(--tap);color:var(--text-2);font-size:var(--fs-xs);flex-direction:column;justify-content:center;align-items:center;gap:2px;font-weight:650;text-decoration:none;display:flex}.tabbar a i{font-size:20px;font-style:normal;line-height:1}.tabbar a.is-primary{color:var(--green)}.button,.auth-btn{min-height:var(--tap);justify-content:center;align-items:center;gap:var(--space-3);border-radius:var(--radius-sm);cursor:pointer;font-weight:700;font-size:var(--fs-sm);border:0;padding:0 20px;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s;display:inline-flex}.button:hover,.auth-btn:hover{transform:translateY(-1px)}.button:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.button:disabled{cursor:not-allowed;opacity:.6;transform:none}.button-primary,.auth-btn{background:var(--green);color:var(--text-inverse);box-shadow:var(--shadow-2)}.button-primary:hover,.auth-btn:hover{background:var(--green-hover)}.button-ghost{border:1px solid var(--line);color:var(--text);background:#ffffff0a}.button-light{border:1px solid var(--line-strong);background:var(--surface-3);color:var(--green-text)}.button-large{min-height:52px;padding-inline:var(--space-5)}.auth-btn.secondary{background:var(--surface-3);color:var(--text);border:1px solid var(--line);box-shadow:none}.eyebrow,.kicker{align-items:center;gap:var(--space-2);color:var(--green);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800;display:inline-flex}.eyebrow i{background:var(--coral);border-radius:50%;width:7px;height:7px}.eyebrow.light{color:#b8d8ca}.kicker.muted{color:var(--text-2)}.progressbar,.showcase-progress,.skill-meter{border-radius:var(--radius-full);background:var(--surface-2);border:1px solid var(--line);height:8px;overflow:hidden}.progressbar i,.showcase-progress i,.skill-meter i{border-radius:inherit;background:var(--green);width:0;height:100%;display:block}.progress-line{align-items:center;gap:var(--space-3);display:flex}.progress-line .progressbar{flex:1}.progress-line b{min-width:40px;color:var(--text-2);font-size:var(--fs-xs);text-align:right;font-weight:650}.auth-notice{align-items:center;gap:var(--space-3);margin-top:var(--space-5);padding:var(--space-3) var(--space-4);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:var(--radius-sm);background:var(--blue-soft);color:var(--blue-text);font-size:var(--fs-sm);flex-wrap:wrap;display:flex}.auth-notice strong{color:var(--text)}.home-hero{align-items:center;gap:var(--space-8);min-height:620px;padding:var(--space-8) 0;grid-template-columns:1.08fr .92fr;display:grid}.hero-copy h1{max-width:700px;margin:var(--space-4) 0;font-family:var(--font-serif);font-size:var(--fs-4xl);letter-spacing:-.03em;font-weight:500;line-height:1.02}.lead{max-width:635px;color:var(--text-2);font-size:var(--fs-lg);margin:0;line-height:1.7}.hero-actions{gap:var(--space-3);margin-top:var(--space-6);flex-wrap:wrap;display:flex}.hero-trust{gap:var(--space-6);margin-top:var(--space-6);color:var(--text-2);font-size:var(--fs-xs);display:flex}.hero-trust span{flex-direction:column;display:flex}.hero-trust b{color:var(--text);font-family:var(--font-serif);font-size:var(--fs-2xl);line-height:1.1}.hero-visual{place-items:center;min-height:460px;display:grid;position:relative}.hero-visual:before{content:"";background:var(--green-soft);border-radius:50% 45% 48% 42%;position:absolute;inset:3% 0 2% 4%;transform:rotate(-5deg)}.math-card{z-index:2;width:min(440px,94%);padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-3);position:relative;transform:rotate(1.5deg)}.math-card-top{color:var(--text-2);font-size:var(--fs-xs);justify-content:space-between;align-items:center;display:flex}.math-card-top .tag{border-radius:var(--radius-full);background:var(--green-soft);color:var(--green-text);padding:4px 10px;font-weight:700}.lesson-kicker{margin-top:var(--space-6);color:var(--green);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800;display:block}.math-card h2{margin:6px 0 var(--space-4);font-family:var(--font-serif);font-size:var(--fs-2xl);font-weight:500}.showcase-formula{padding:var(--space-5) var(--space-3);background:var(--surface-2);text-align:center;font-family:var(--font-math);border-radius:12px;font-size:clamp(22px,3vw,32px)}.showcase-answer{align-items:center;gap:var(--space-3);margin:var(--space-4) 0;padding:var(--space-3) var(--space-4);border:1px solid var(--line-strong);border-radius:var(--radius-sm);display:flex}.showcase-answer span{color:var(--text-2);font-size:var(--fs-xs)}.showcase-answer b{font-size:var(--fs-lg);margin-left:auto}.showcase-answer i{background:var(--green);width:24px;height:24px;color:var(--text-inverse);font-style:normal;font-size:var(--fs-xs);border-radius:50%;place-items:center;display:grid}.math-card>small{margin-top:var(--space-2);color:var(--text-2);font-size:var(--fs-xs);display:block}.math-orbit{z-index:3;font-family:var(--font-serif);box-shadow:var(--shadow-3);border-radius:50%;place-items:center;display:grid;position:absolute}.orbit-one{background:var(--coral);width:68px;height:68px;color:var(--text-inverse);font-size:28px;top:3%;right:1%;transform:rotate(8deg)}.orbit-two{background:var(--yellow);width:58px;height:58px;color:var(--yellow-text);font-size:19px;bottom:9%;left:2%;transform:rotate(-9deg)}.home-section{padding:var(--space-8) 0;border-top:1px solid var(--line)}.section-heading{max-width:670px;margin:0 auto var(--space-7);text-align:center}.section-heading h2,.route-banner h2,.section-title-row h2{margin:var(--space-3) 0 var(--space-2);font-family:var(--font-serif);font-size:clamp(var(--fs-2xl), 4vw, 3rem);letter-spacing:-.02em;font-weight:500;line-height:1.08}.section-heading p{color:var(--text-2);margin:0}.feature-grid{gap:var(--space-4);grid-template-columns:repeat(3,1fr);display:grid}.feature-card{min-height:240px;padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);position:relative;overflow:hidden}.feature-number{top:var(--space-4);right:var(--space-5);color:var(--text-3);opacity:.5;font-family:var(--font-serif);font-size:var(--fs-2xl);position:absolute}.feature-icon{width:54px;height:54px;margin-bottom:var(--space-6);border-radius:var(--radius);font-family:var(--font-serif);place-items:center;font-size:24px;display:grid}.feature-coral .feature-icon{background:var(--coral-soft);color:var(--coral-text)}.feature-blue .feature-icon{background:var(--blue-soft);color:var(--blue-text)}.feature-green .feature-icon{background:var(--green-soft);color:var(--green)}.feature-card h3{margin:0 0 var(--space-2);font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500}.feature-card p{color:var(--text-2);font-size:var(--fs-sm);margin:0}.route-banner{justify-content:space-between;align-items:end;gap:var(--space-6);padding:var(--space-7) var(--space-7);border-radius:var(--radius-lg);background:var(--green-dark);color:var(--text);border:1px solid #286c54;display:flex}.route-banner h2{max-width:690px;margin-bottom:var(--space-2)}.route-banner p{color:#b7d1c5;max-width:720px;margin:0}.route-banner .button{flex:none}.dashboard-page{padding-top:var(--space-7)}.dashboard-welcome{justify-content:space-between;align-items:end;gap:var(--space-5);margin-bottom:var(--space-6);display:flex}.dashboard-welcome h1{margin:var(--space-2) 0 var(--space-1);font-family:var(--font-serif);font-size:clamp(var(--fs-3xl), 5vw, 3.5rem);letter-spacing:-.03em;font-weight:500;line-height:1.05}.dashboard-welcome p{color:var(--text-2);margin:0}.dashboard-grid{gap:var(--space-4);grid-template-columns:minmax(0,1.65fr) minmax(280px,.75fr);display:grid}.continue-card,.today-card,.course-section,.skills-section,.roadmap-section,.stage-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1)}.continue-card{scroll-margin-top:calc(var(--topbar-h) + var(--space-4));grid-template-columns:1.35fr .65fr;display:grid;overflow:hidden}.continue-copy{padding:var(--space-6)}.card-label{color:var(--text-2);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800;display:block}.module-caption{margin-top:var(--space-5);color:var(--green);font-size:var(--fs-xs);font-weight:700;display:block}.continue-card h2,.today-card h2{margin:var(--space-1) 0 var(--space-2);font-family:var(--font-serif);font-size:var(--fs-2xl);font-weight:500;line-height:1.1}.continue-card p{color:var(--text-2);font-size:var(--fs-sm);margin:0}.continue-card .progress-line{margin:var(--space-5) 0}.continue-actions{align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex}.continue-alt{color:var(--green);font-size:var(--fs-sm);font-weight:650;text-decoration:none}.continue-alt:hover{text-decoration:underline}.continue-art{background:var(--green-soft);font-family:var(--font-serif);color:var(--green-text);flex-direction:column;justify-content:center;align-items:center;gap:2px;display:flex}.continue-art span{font-size:48px;line-height:1;transform:rotate(-3deg)}.continue-art i{color:var(--green);opacity:.6;font-size:28px;font-style:normal}.continue-art b{width:64px;height:64px;margin-top:var(--space-1);background:var(--coral);color:var(--text-inverse);border-radius:50%;place-items:center;font-size:42px;font-weight:400;display:grid;transform:rotate(5deg)}.today-card{padding:var(--space-6)}.today-card h2{font-size:var(--fs-xl)}.today-list{margin:var(--space-4) 0;padding:0;list-style:none;display:grid}.today-list li{align-items:center;gap:var(--space-3);min-height:var(--tap);padding:var(--space-2) 0;border-bottom:1px solid var(--line);grid-template-columns:9px 1fr auto;display:grid}.today-list i{border-radius:50%;width:8px;height:8px}.dot-coral{background:var(--coral)}.dot-blue{background:var(--blue)}.dot-green{background:var(--green)}.today-list span{flex-direction:column;display:flex}.today-list a{color:var(--text);text-decoration:none}.today-list a:hover{color:var(--green)}.today-list b{font-size:var(--fs-sm)}.today-list small{color:var(--text-2);font-size:var(--fs-xs)}.today-list strong{color:var(--text-2);font-size:var(--fs-xs);font-weight:650}.today-note{color:var(--text-2);font-size:var(--fs-xs);margin:0}.stats-row{gap:var(--space-3);margin:var(--space-4) 0 var(--space-7);grid-template-columns:repeat(3,1fr);display:grid}.stats-row>div{align-items:center;gap:var(--space-3);padding:var(--space-4) var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);display:flex}.stat-icon{border-radius:var(--radius-sm);width:36px;height:36px;font-family:var(--font-serif);place-items:center;display:grid}.stat-icon.coral{background:var(--coral-soft);color:var(--coral-text)}.stat-icon.blue{background:var(--blue-soft);color:var(--blue-text)}.stat-icon.green{background:var(--green-soft);color:var(--green)}.stats-row p{flex-direction:column;margin:0;line-height:1.2;display:flex}.stats-row b{font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500}.stats-row small{color:var(--text-2);font-size:var(--fs-xs)}.course-section,.skills-section{margin-top:var(--space-4);padding:var(--space-6);scroll-margin-top:calc(var(--topbar-h) + var(--space-4))}.section-title-row{justify-content:space-between;align-items:end;gap:var(--space-6);margin-bottom:var(--space-5);display:flex}.section-title-row h2{margin:var(--space-1) 0 0;font-size:var(--fs-2xl)}.section-title-row>p,.section-meta{max-width:390px;color:var(--text-2);font-size:var(--fs-sm);margin:0}.section-heading-action{text-align:right;max-width:390px}.section-heading-action p{margin:0 0 var(--space-1);color:var(--text-2);font-size:var(--fs-sm)}.section-heading-action a{color:var(--green);font-size:var(--fs-sm);font-weight:700;text-decoration:none}.section-heading-action a:hover{text-decoration:underline}.course-map-page{padding-top:var(--space-5)}.course-map-hero{align-items:end;gap:var(--space-7);padding:var(--space-7) 0 var(--space-6);grid-template-columns:minmax(0,1fr) auto;display:grid}.course-map-hero h1{margin:var(--space-2) 0 var(--space-3);font-family:var(--font-serif);font-size:clamp(var(--fs-3xl), 6vw, 4.5rem);letter-spacing:-.04em;font-weight:500;line-height:.98}.course-map-hero p{max-width:720px;color:var(--text-2);font-size:var(--fs-body);margin:0}.course-map-stats{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1);grid-template-columns:repeat(2,110px);margin:0;display:grid;overflow:hidden}.course-map-stats div{padding:var(--space-4);border-right:1px solid var(--line);border-bottom:1px solid var(--line);flex-direction:column-reverse;display:flex}.course-map-stats div:nth-child(2n){border-right:0}.course-map-stats div:nth-child(n+3){border-bottom:0}.course-map-stats dt{color:var(--text-2);font-size:var(--fs-xs)}.course-map-stats dd{font-family:var(--font-serif);font-size:var(--fs-2xl);margin:0;line-height:1.1}.course-map-jump{z-index:12;top:var(--topbar-h);gap:var(--space-2);padding:var(--space-3) 0;background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);grid-template-columns:repeat(5,1fr);display:grid;position:sticky}.course-map-jump a{align-items:center;gap:var(--space-2);min-height:var(--tap);padding:var(--space-2) var(--space-3);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--text-2);font-size:var(--fs-xs);font-weight:700;line-height:1.25;text-decoration:none;display:flex}.course-map-jump a:hover{border-color:var(--line-strong);color:var(--green)}.course-map-jump a span{background:var(--green-soft);width:25px;height:25px;color:var(--green);font-family:var(--font-serif);font-size:var(--fs-sm);border-radius:50%;flex:none;place-items:center;display:grid}.course-map-stages{gap:var(--space-8);padding-top:var(--space-7);display:grid}.course-map-stage{scroll-margin-top:calc(var(--topbar-h) + 82px)}.course-map-stage-header{align-items:center;gap:var(--space-5);margin-bottom:var(--space-5);padding-bottom:var(--space-5);border-bottom:1px solid var(--line-strong);grid-template-columns:64px minmax(0,1fr) 170px;display:grid}.course-map-stage-index{border-radius:var(--radius);background:var(--green);width:64px;height:64px;color:var(--text-inverse);font-family:var(--font-serif);font-size:var(--fs-2xl);place-items:center;display:grid}.course-map-stage-header h2{margin:var(--space-1) 0;font-family:var(--font-serif);font-size:var(--fs-2xl);font-weight:500}.course-map-stage-header p{color:var(--text-2);font-size:var(--fs-sm);margin:0}.course-map-stage-progress{flex-direction:column;align-items:flex-end;display:flex}.course-map-stage-progress b{color:var(--green);font-family:var(--font-serif);font-size:var(--fs-xl)}.course-map-stage-progress>span:not(.progressbar){color:var(--text-2);font-size:var(--fs-xs)}.course-map-stage-progress .progressbar{width:150px;margin-top:var(--space-2)}.course-map-modules{gap:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;display:grid}.course-map-module{padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1)}.course-map-module.is-current{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}.course-map-module.is-done{background:color-mix(in srgb, var(--green-soft) 30%, var(--surface))}.course-map-module-top{align-items:start;gap:var(--space-3);grid-template-columns:46px minmax(0,1fr) 38px;display:grid}.course-map-module-number{border-radius:var(--radius-sm);background:var(--surface-2);width:46px;height:46px;color:var(--text-2);font-family:var(--font-serif);font-size:var(--fs-lg);place-items:center;display:grid}.course-map-module.is-current .course-map-module-number{background:var(--green);color:var(--text-inverse)}.course-map-module.is-done .course-map-module-number{background:var(--green-soft);color:var(--green)}.course-map-module h3{margin:var(--space-1) 0 0;font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500;line-height:1.2}.course-map-module h3 a{text-decoration:none}.course-map-module h3 a:hover{color:var(--green)}.course-map-module-open{border:1px solid var(--line);width:38px;height:38px;color:var(--green);border-radius:50%;place-items:center;font-size:20px;text-decoration:none;display:grid}.course-map-module-open:hover{border-color:var(--green);background:var(--green-soft)}.course-map-module-summary{min-height:44px;margin:var(--space-4) 0;color:var(--text-2);font-size:var(--fs-sm)}.course-map-module-meta{gap:var(--space-2) var(--space-3);margin-bottom:var(--space-2);color:var(--text-2);font-size:var(--fs-xs);flex-wrap:wrap;display:flex}.course-map-module-meta b{color:var(--green);margin-left:auto}.course-map-lessons{gap:var(--space-1);margin:var(--space-5) 0 0;padding:var(--space-4) 0 0;border-top:1px solid var(--line);list-style:none;display:grid}.course-map-lessons li a{align-items:center;gap:var(--space-3);min-height:var(--tap);padding:var(--space-2);border-radius:var(--radius-sm);grid-template-columns:28px minmax(0,1fr) auto;text-decoration:none;display:grid}.course-map-lessons li a:hover{background:var(--surface-2)}.course-map-lessons li.is-current a{background:var(--green-soft)}.course-map-lesson-state{border:1px solid var(--line);width:28px;height:28px;color:var(--text-3);font-size:var(--fs-xs);border-radius:50%;place-items:center;display:grid}.course-map-lessons li.is-done .course-map-lesson-state{border-color:var(--green);background:var(--green);color:var(--text-inverse)}.course-map-lesson-copy{flex-direction:column;min-width:0;display:flex}.course-map-lesson-copy b{font-size:var(--fs-sm);font-weight:650}.course-map-lesson-copy small{color:var(--text-2);font-size:var(--fs-xs)}.course-map-lesson-progress{color:var(--green);font-size:var(--fs-xs);font-weight:700}.stage-list{gap:var(--space-3);display:grid}.stage-card{box-shadow:none;overflow:hidden}.stage-card summary{align-items:center;gap:var(--space-4);min-height:var(--tap);padding:var(--space-4) var(--space-5);cursor:pointer;grid-template-columns:44px minmax(0,1fr) auto 24px;list-style:none;display:grid}.stage-card summary::-webkit-details-marker{display:none}.stage-index{border-radius:var(--radius-sm);background:var(--surface-2);width:44px;height:44px;color:var(--text-2);font-family:var(--font-serif);font-size:var(--fs-lg);place-items:center;display:grid}.stage-card.is-current .stage-index{background:var(--green);color:var(--text-inverse)}.stage-card.is-done .stage-index{background:var(--green-soft);color:var(--green)}.stage-title{flex-direction:column;min-width:0;display:flex}.stage-title b{font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:500}.stage-title small{color:var(--text-2);font-size:var(--fs-xs)}.stage-meta{color:var(--text-2);font-size:var(--fs-xs);white-space:nowrap;flex-direction:column;align-items:end;display:flex}.stage-meta b{color:var(--text);font-size:var(--fs-sm)}.stage-meta .progressbar{width:96px;margin-top:var(--space-1)}.stage-chevron{color:var(--text-3);font-size:20px;font-style:normal;transition:transform .15s}.stage-card[open] .stage-chevron{transform:rotate(180deg)}.stage-modules{gap:var(--space-2);padding:0 var(--space-5) var(--space-5);display:grid}.stage-module{align-items:center;gap:var(--space-4);min-height:var(--tap);padding:var(--space-3);border-radius:var(--radius-sm);color:var(--text);grid-template-columns:36px minmax(0,1fr) 140px;text-decoration:none;transition:background .15s;display:grid}.stage-module:hover{background:var(--surface-2)}.stage-module.is-current{background:var(--green-soft)}.stage-module>span:first-child{color:var(--text-3);font-family:var(--font-serif);font-size:var(--fs-md)}.stage-module.is-done>span:first-child{color:var(--green)}.stage-module-copy{flex-direction:column;min-width:0;display:flex}.stage-module-copy b{font-size:var(--fs-sm)}.stage-module-copy small{color:var(--text-2);font-size:var(--fs-xs);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.stage-module .progress-line{gap:var(--space-2)}.stage-module .progress-line b{min-width:36px}.all-done{align-items:center;gap:var(--space-4);margin-bottom:var(--space-4);padding:var(--space-5);border:1px solid var(--line);border-left:4px solid var(--green);border-radius:var(--radius);background:var(--green-soft);flex-wrap:wrap;display:flex}.all-done>div{flex:1;min-width:240px}.all-done b{font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500;display:block}.all-done p{margin:var(--space-1) 0 0;color:var(--text-2);font-size:var(--fs-sm)}.skills-grid{gap:var(--space-3);grid-template-columns:repeat(2,1fr);display:grid}.skill-card{align-items:center;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-3);display:flex}.skill-symbol{border-radius:var(--radius-sm);width:40px;height:40px;font-family:var(--font-serif);font-size:var(--fs-lg);flex:none;place-items:center;display:grid}.tone-numbers{background:var(--green-soft);color:var(--green)}.tone-algebra{background:var(--blue-soft);color:var(--blue-text)}.tone-functions{background:var(--yellow-soft);color:var(--yellow-text)}.tone-analysis{background:var(--coral-soft);color:var(--coral-text)}.tone-geometry{background:var(--surface-2);color:var(--text-2)}.tone-probability{background:var(--blue-soft);color:var(--blue)}.skill-content{flex:1;min-width:0}.skill-content>div:first-child{justify-content:space-between;gap:var(--space-3);display:flex}.skill-content strong,.skill-content b{font-size:var(--fs-sm)}.skill-content b{color:var(--green)}.skill-content small{color:var(--text-2);font-size:var(--fs-xs)}.skill-meter{margin:var(--space-2) 0 var(--space-1)}.skills-more{margin-top:var(--space-3)}.skills-more summary{min-height:var(--tap);color:var(--green);font-size:var(--fs-sm);cursor:pointer;align-items:center;font-weight:650;display:inline-flex}.skills-more .skills-grid{margin-top:var(--space-2)}.skills-empty{color:var(--text-2);font-size:var(--fs-sm);margin:0}.breadcrumbs ol{gap:var(--space-2);color:var(--text-2);font-size:var(--fs-xs);flex-wrap:wrap;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li{align-items:center;gap:var(--space-2);max-width:100%;display:flex}.breadcrumbs li+li:before{content:"›";color:var(--text-3)}.breadcrumbs a{color:var(--green);text-decoration:none}.breadcrumbs a:hover{text-decoration:underline}.breadcrumbs [aria-current=page]{color:var(--text);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.module-page{padding-top:var(--space-6)}.module-hero{align-items:start;gap:var(--space-5);margin-top:var(--space-5);padding:var(--space-7);border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg, var(--green-soft) 0%, var(--surface) 70%);grid-template-columns:74px minmax(0,1fr) 200px;display:grid;position:relative;overflow:hidden}.module-hero.is-complete{background:linear-gradient(135deg, var(--green-soft) 0%, var(--green-soft) 100%)}.module-hero-index{border-radius:var(--radius);background:var(--green);width:72px;height:72px;color:var(--text-inverse);font-family:var(--font-serif);font-size:var(--fs-2xl);box-shadow:var(--shadow-2);place-items:center;display:grid}.module-hero-copy{z-index:1;min-width:0;position:relative}.module-hero-copy h1{max-width:770px;margin:var(--space-2) 0 var(--space-3);font-family:var(--font-serif);font-size:clamp(var(--fs-2xl), 4vw, 3.25rem);letter-spacing:-.02em;font-weight:500;line-height:1.05}.module-hero-copy>p{max-width:680px;margin:0 0 var(--space-4);color:var(--text-2);font-size:var(--fs-md);line-height:var(--lh-body)}.module-summary{max-width:680px;margin:0 0 var(--space-4);color:var(--text);font-size:var(--fs-body);line-height:var(--lh-body)}.module-ideas{margin:0 0 var(--space-5);gap:var(--space-2);max-width:680px;padding:0;list-style:none;display:grid}.module-ideas li{padding-left:var(--space-5);color:var(--text-2);font-size:var(--fs-sm);line-height:1.5;position:relative}.module-ideas li:before{content:"•";left:var(--space-2);color:var(--green);font-weight:800;position:absolute}.module-ideas-title{margin-bottom:var(--space-2);color:var(--text);font-size:var(--fs-sm);font-weight:700;display:block}.module-hero-actions{align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex}.module-hero-actions small{color:var(--text-2);font-size:var(--fs-xs)}.module-progress-card{z-index:1;align-items:center;gap:var(--space-3);padding:var(--space-5) var(--space-4);border:1px solid var(--line);border-radius:var(--radius);background:#111412d1;flex-direction:column;display:flex;position:relative}.module-progress-card .lesson-progress-ring:before{background:var(--surface-3)}.module-progress-card>p{text-align:center;flex-direction:column;align-items:center;margin:0;line-height:1.2;display:flex}.module-progress-card>p b{font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:500}.module-progress-card>p small{color:var(--text-2);font-size:var(--fs-xs)}.module-lessons-section{margin-top:var(--space-5);padding:var(--space-6);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface)}.module-lesson-list{gap:var(--space-3);display:grid}.module-lesson-card{align-items:start;gap:var(--space-4);padding:var(--space-4) var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-3);color:var(--text);grid-template-columns:42px minmax(0,1fr) 24px;text-decoration:none;transition:transform .15s,border-color .15s,box-shadow .15s;display:grid}.module-lesson-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);transform:translateY(-2px)}.module-lesson-number{border-radius:var(--radius-sm);background:var(--surface-2);width:40px;height:40px;color:var(--green);font-family:var(--font-serif);font-size:var(--fs-sm);place-items:center;display:grid}.module-lesson-card.is-complete .module-lesson-number{background:var(--green);color:var(--text-inverse)}.module-lesson-meta{align-items:center;gap:var(--space-2) var(--space-3);color:var(--text-2);font-size:var(--fs-xs);flex-wrap:wrap;display:flex}.lesson-kind{border-radius:var(--radius-full);font-size:var(--fs-xs);letter-spacing:.02em;align-items:center;padding:2px 10px;font-weight:700;display:inline-flex}.lesson-kind.kind-notes{background:var(--green-soft);color:var(--green-text)}.lesson-kind.kind-geometry{background:var(--surface-2);color:var(--text-2);border:1px solid var(--line)}.lesson-kind.kind-probability{background:var(--blue-soft);color:var(--blue-text)}.lesson-kind.kind-control{background:var(--coral-soft);color:var(--coral-text)}.lesson-kind.kind-project{background:var(--yellow-soft);color:var(--yellow-text)}.lesson-kind.kind-reading{background:var(--blue-soft);color:var(--blue-text)}.module-lesson-card h3{margin:var(--space-1) 0 var(--space-3);font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:500;line-height:1.25}.module-lesson-card .progress-line{max-width:420px;margin:0}.module-lesson-arrow{color:var(--green);align-self:center;font-style:normal}.module-navigation{gap:var(--space-6);margin-top:var(--space-5);padding-top:var(--space-5);border-top:1px solid var(--line);grid-template-columns:1fr 1fr;display:grid}.module-navigation>a{min-height:var(--tap);color:var(--text);flex-direction:column;text-decoration:none;display:flex}.module-navigation>a.next{text-align:right}.module-navigation span{color:var(--green);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800}.module-navigation b{font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:500}.lesson-page{padding-top:var(--space-6)}.lesson-breadcrumbs{gap:var(--space-2);color:var(--text-2);font-size:var(--fs-xs);display:flex}.lesson-breadcrumbs a{color:var(--green);text-decoration:none}.lesson-header{justify-content:space-between;align-items:center;gap:var(--space-6);padding:var(--space-6) 0;border-bottom:1px solid var(--line);display:flex}.lesson-header h1{max-width:820px;margin:var(--space-2) 0 var(--space-1);font-family:var(--font-serif);font-size:clamp(var(--fs-2xl), 4vw, 3.25rem);letter-spacing:-.02em;font-weight:500;line-height:1.05}.lesson-header p{color:var(--text-2);margin:0}.lesson-progress-ring{--progress:0deg;background:conic-gradient(var(--green) var(--progress), var(--surface-2) 0);border-radius:50%;flex:none;place-items:center;width:88px;height:88px;display:grid}.lesson-progress-ring:before{content:"";background:var(--bg);border-radius:50%;grid-area:1/1;width:72px;height:72px}.lesson-progress-ring span{z-index:1;flex-direction:column;grid-area:1/1;align-items:center;line-height:1.1;display:flex}.lesson-progress-ring b{font-family:var(--font-serif);font-size:var(--fs-lg)}.lesson-progress-ring small{color:var(--text-2);font-size:var(--fs-xs)}.lesson-layout{gap:var(--space-7);padding-top:var(--space-7);grid-template-columns:minmax(0,1fr) 260px;display:grid}.lesson-content{max-width:760px}.lesson-blocks{gap:var(--space-4);display:grid}.lesson-section-heading,.practice-heading{align-items:center;gap:var(--space-4);margin-bottom:var(--space-2);display:flex}.lesson-section-heading h2,.practice-heading h2{font-family:var(--font-serif);font-size:var(--fs-2xl);margin:0;font-weight:500}.practice-number{border-radius:var(--radius-sm);background:var(--green);width:42px;height:42px;color:var(--text-inverse);font-family:var(--font-serif);font-size:var(--fs-md);flex:none;place-items:center;display:grid}.lesson-block{padding:var(--space-1) 0}.lesson-block h3{margin:0 0 var(--space-2);font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500}.lesson-block p{color:var(--text);font-size:var(--fs-body);line-height:var(--lh-loose);max-width:68ch;margin:0}.topic-list{gap:var(--space-2);margin:var(--space-3) 0 0;grid-template-columns:1fr;padding:0;list-style:none;display:grid}.topic-list li{padding:var(--space-2) var(--space-3) var(--space-2) var(--space-6);border-radius:var(--radius-sm);color:var(--text);font-size:var(--fs-md);background:#ffffff09;line-height:1.55;position:relative}.topic-list li:before{content:"✓";left:var(--space-3);top:var(--space-2);color:var(--green);font-size:var(--fs-xs);font-weight:900;position:absolute}.formula-block{min-height:96px;margin:var(--space-1) 0;padding:var(--space-5);border:1px solid var(--line);background:var(--surface-2);border-radius:12px;justify-content:safe center;align-items:center;font-size:clamp(1.125rem,3vw,1.75rem);display:flex;position:relative;overflow-x:auto}.formula-block>span:first-child{top:var(--space-2);left:var(--space-3);color:var(--text-3);font-family:var(--font-sans);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:700;position:absolute}.example-block{margin:var(--space-2) 0;padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.block-kicker{color:var(--text-2);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800}.example-block h3{margin-top:var(--space-1)}.example-block>ol{margin:var(--space-4) 0 0;padding-left:var(--space-5)}.formula-step{margin:var(--space-2) 0;max-width:100%;overflow-x:auto}.solution{margin-top:var(--space-4);border-top:1px solid var(--line)}.solution summary{min-height:var(--tap);padding-top:var(--space-3);cursor:pointer;color:var(--green);font-size:var(--fs-sm);justify-content:space-between;align-items:center;font-weight:700;list-style:none;display:flex}.solution summary::-webkit-details-marker{display:none}.solution summary i{font-size:18px;font-style:normal}.solution ol{padding-left:var(--space-5)}.callout-block,.checkpoint-block{gap:var(--space-4);margin:var(--space-2) 0;padding:var(--space-5);border-radius:var(--radius);display:flex}.callout-block{background:var(--green-soft);border-left:3px solid var(--green)}.callout-block.warning{background:var(--coral-soft);border-left-color:var(--coral)}.callout-block.definition{background:var(--blue-soft);border-left-color:var(--blue)}.callout-icon,.checkpoint-icon{border-radius:var(--radius-sm);background:var(--surface-3);width:34px;height:34px;color:var(--green);font-family:var(--font-serif);flex:none;place-items:center;font-size:18px;display:grid}.callout-block.warning .callout-icon{color:var(--coral-text)}.callout-block.definition .callout-icon{color:var(--blue-text)}.callout-block strong,.checkpoint-block strong{margin:0 0 var(--space-1);font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:600;display:block}.callout-block p,.checkpoint-block p{font-size:var(--fs-md);line-height:var(--lh-body)}.checkpoint-block{background:var(--yellow-soft);border:1.5px dashed var(--yellow)}.checkpoint-icon{color:var(--yellow-text)}.checkpoint-block .checkpoint-note{margin-top:var(--space-2);color:var(--yellow-text);font-size:var(--fs-sm)}.graph-placeholder{min-height:180px;margin-top:var(--space-3);border:1px dashed var(--line-strong);background:var(--surface-2);color:var(--green);border-radius:12px;place-items:center;display:grid}.practice-section{margin-top:var(--space-8);padding-top:var(--space-7);border-top:1px solid var(--line)}.practice-heading{margin-bottom:var(--space-5);align-items:flex-start}.practice-heading p{margin:var(--space-1) 0 0;color:var(--text-2);font-size:var(--fs-sm)}.exercise-list{gap:var(--space-4);display:grid}.exercise{padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);transition:border-color .15s,box-shadow .15s}.exercise-correct{border-color:var(--green);box-shadow:var(--shadow-2)}.exercise-wrong{border-color:var(--coral)}.exercise-topline{color:var(--text-2);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;justify-content:space-between;align-items:center;font-weight:700;display:flex}.difficulty{border-radius:var(--radius-full);background:var(--green-soft);color:var(--green-text);padding:4px 10px}.difficulty-2{background:var(--blue-soft);color:var(--blue-text)}.difficulty-3{background:var(--coral-soft);color:var(--coral-text)}.exercise h3{margin:var(--space-4) 0 var(--space-1);font-family:var(--font-serif);font-size:var(--fs-xl);font-weight:500}.exercise-prompt{margin:0 0 var(--space-4);color:var(--text)}.exercise-formula{margin:var(--space-4) 0;padding:var(--space-4);background:var(--surface-2);text-align:center;font-size:var(--fs-xl);border-radius:12px}.answer-field{margin-top:var(--space-4);display:block}.answer-field>span{margin-bottom:var(--space-2);color:var(--text-2);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:700;display:block}.answer-field input{width:100%;height:48px;padding:0 var(--space-4);border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-3);color:var(--text);font-size:var(--fs-lg);outline:none}.answer-field input:focus{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}.choice-grid{gap:var(--space-2);margin:var(--space-4) 0;grid-template-columns:repeat(3,1fr);display:grid}.choice-button{align-items:center;gap:var(--space-2);min-height:48px;padding:var(--space-2) var(--space-3);border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-3);color:var(--text);cursor:pointer;text-align:left;display:flex}.choice-button:hover{border-color:var(--green)}.choice-button i{background:var(--surface-2);width:24px;height:24px;color:var(--text-2);font-size:var(--fs-xs);border-radius:7px;place-items:center;font-style:normal;font-weight:800;display:grid}.choice-button.selected{border-color:var(--green);background:var(--green-soft)}.choice-button.selected i{background:var(--green);color:var(--text-inverse)}.exercise-actions{align-items:center;gap:var(--space-4);margin-top:var(--space-4);display:flex}.attempt-line{color:var(--text-2);font-size:var(--fs-xs);margin:0}.answer-feedback{align-items:flex-start;gap:var(--space-3);margin-top:var(--space-4);padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);display:flex}.answer-feedback>span{width:26px;height:26px;color:var(--text-inverse);font-size:var(--fs-xs);border-radius:50%;flex:none;place-items:center;display:grid}.answer-feedback p{font-size:var(--fs-sm);flex-direction:column;margin:0;display:flex}.answer-feedback b{font-size:var(--fs-sm)}.answer-feedback.correct{background:var(--green-soft);color:var(--green-text)}.answer-feedback.correct>span{background:var(--green)}.answer-feedback.wrong{background:var(--coral-soft);color:var(--coral-text)}.answer-feedback.wrong>span{background:var(--coral)}.empty-state{padding:var(--space-5);border:1px dashed var(--line-strong);color:var(--text-2);text-align:center;border-radius:12px}.complete-lesson{align-items:center;gap:var(--space-4);padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--green-soft);grid-template-columns:46px 1fr auto;display:grid;position:relative}.complete-lesson>span{border-radius:var(--radius-sm);background:var(--green);width:42px;height:42px;color:var(--text-inverse);font-family:var(--font-serif);font-size:var(--fs-sm);place-items:center;display:grid}.complete-lesson>div{flex-direction:column;display:flex}.complete-lesson b{font-family:var(--font-serif);font-size:var(--fs-lg)}.complete-lesson p{color:var(--text-2);font-size:var(--fs-xs);margin:2px 0 0}.complete-lesson>small{color:var(--coral-text);font-size:var(--fs-xs);grid-column:2/-1}.complete-lesson.is-complete{background:var(--surface)}.complete-lesson.is-complete>span{background:var(--green)}.lesson-aside{top:calc(var(--topbar-h) + var(--space-5));align-self:start;gap:var(--space-3);display:grid;position:sticky}.aside-card,.aside-tip{padding:var(--space-5);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.aside-card ol{gap:var(--space-3);margin:var(--space-4) 0 0;padding:0;list-style:none;display:grid}.aside-card li{align-items:center;gap:var(--space-2);min-height:28px;color:var(--text-2);font-size:var(--fs-sm);display:flex}.aside-card li i{border:1px solid var(--line-strong);width:26px;height:26px;font-style:normal;font-size:var(--fs-xs);border-radius:50%;place-items:center;display:grid}.aside-card li.active{color:var(--text);font-weight:700}.aside-card li.active i{border-color:var(--green);background:var(--green-soft);color:var(--green)}.aside-card li.done i{border-color:var(--green);background:var(--green);color:var(--text-inverse)}.aside-tip{gap:var(--space-3);background:var(--yellow-soft);display:flex}.aside-tip>span{color:var(--yellow-text);font-size:22px}.aside-tip p{color:var(--yellow-text);font-size:var(--fs-xs);flex-direction:column;margin:0;display:flex}.aside-tip b{color:var(--text);font-family:var(--font-serif);font-size:var(--fs-sm)}.lesson-footer{margin-top:var(--space-8);padding-top:var(--space-5);border-top:1px solid var(--line)}.lesson-footer>div{justify-content:space-between;gap:var(--space-5);display:flex}.lesson-nav-link{max-width:330px;min-height:var(--tap);flex-direction:column;text-decoration:none;display:flex}.lesson-nav-link span{color:var(--green);font-size:var(--fs-xs);letter-spacing:var(--track-caps);text-transform:uppercase;font-weight:800}.lesson-nav-link b{font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:500}.lesson-nav-link.next{text-align:right;margin-left:auto}.state-page{max-width:560px;margin:var(--space-8) auto;padding:var(--space-6);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);text-align:center}.state-page .state-icon{width:56px;height:56px;margin:0 auto var(--space-4);border-radius:var(--radius);background:var(--coral-soft);color:var(--coral-text);font-family:var(--font-serif);font-size:var(--fs-2xl);place-items:center;display:grid}.state-page .state-icon.info{background:var(--blue-soft);color:var(--blue-text)}.state-page h1{margin:0 0 var(--space-2);font-family:var(--font-serif);font-size:var(--fs-2xl);font-weight:500}.state-page p{margin:0 0 var(--space-5);color:var(--text-2)}.state-page .state-actions{justify-content:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.state-page code{margin-top:var(--space-4);color:var(--text-3);font-size:var(--fs-xs);display:block}.skeleton{border-radius:var(--radius-sm);background:var(--surface-2);position:relative;overflow:hidden}.skeleton:after{content:"";background:linear-gradient(90deg,#0000,#ffffff14,#0000);animation:1.4s infinite skeleton-shimmer;position:absolute;inset:0;transform:translate(-100%)}.skeleton-text{height:14px}.skeleton-title{max-width:60%;height:36px}.skeleton-card{border-radius:var(--radius-lg);min-height:200px}.skeleton-page{gap:var(--space-4);padding-top:var(--space-7);display:grid}.skeleton-page .skeleton-row{gap:var(--space-4);grid-template-columns:1.65fr .75fr;display:grid}@keyframes skeleton-shimmer{to{transform:translate(100%)}}@media (max-width:1024px){.lesson-layout{grid-template-columns:1fr}.lesson-content{max-width:none}.lesson-aside{position:static}}@media (max-width:900px){.home-hero{gap:var(--space-6);padding-top:var(--space-7);grid-template-columns:1fr}.hero-copy{text-align:center}.hero-copy .eyebrow,.hero-actions,.auth-notice{justify-content:center}.lead{margin-inline:auto}.hero-trust{justify-content:center}.hero-visual{min-height:410px}.feature-grid{grid-template-columns:1fr}.feature-card{min-height:210px}.feature-icon{margin-bottom:var(--space-5)}.dashboard-grid{grid-template-columns:1fr}.module-hero{grid-template-columns:64px minmax(0,1fr)}.module-progress-card{flex-direction:row;grid-column:1/-1;justify-content:center}.stage-module{grid-template-columns:32px minmax(0,1fr)}.stage-module .progress-line{grid-column:2}.course-map-hero{align-items:start;gap:var(--space-5);grid-template-columns:1fr}.course-map-stats{grid-template-columns:repeat(4,minmax(90px,1fr));width:100%}.course-map-stats div{border-right:1px solid var(--line);border-bottom:0}.course-map-stats div:nth-child(2n){border-right:1px solid var(--line)}.course-map-stats div:last-child{border-right:0}.course-map-jump{grid-template-columns:repeat(3,1fr)}.course-map-modules{grid-template-columns:1fr}}@media (max-width:680px){.root-shell>main{padding-bottom:calc(var(--tabbar-h) + var(--space-8))}.topbar{gap:var(--space-4)}.main-nav,.profile-copy{display:none}.logo{font-size:var(--fs-lg)}.logo-mark{width:31px;height:31px}.tabbar{display:grid}.home-hero{min-height:auto;padding:var(--space-6) 0 var(--space-8)}.hero-copy h1{letter-spacing:-.02em;font-size:2.5rem}.lead{font-size:var(--fs-md)}.hero-trust{gap:var(--space-4);justify-content:space-between}.hero-trust span{max-width:100px}.hero-actions .button{width:100%}.hero-visual{min-height:370px}.math-card{padding:var(--space-5)}.orbit-one{right:0}.orbit-two{left:0}.home-section{padding:var(--space-8) 0}.route-banner{padding:var(--space-6) var(--space-5);flex-direction:column;align-items:stretch}.route-banner .button{width:100%}.dashboard-page{padding-top:var(--space-6)}.dashboard-welcome{flex-direction:column;align-items:flex-start}.dashboard-welcome h1{font-size:var(--fs-3xl)}.continue-card{grid-template-columns:1fr}.continue-art{flex-direction:row;min-height:110px}.continue-art span{font-size:36px}.continue-art b{width:48px;height:48px;font-size:30px}.continue-copy{padding:var(--space-5)}.continue-actions .button{width:100%}.stats-row{grid-template-columns:1fr}.course-section,.skills-section{padding:var(--space-5) var(--space-4)}.section-title-row{align-items:flex-start;gap:var(--space-2);flex-direction:column}.section-title-row>p{max-width:none}.section-heading-action{text-align:left;max-width:none}.stage-card summary{padding:var(--space-3) var(--space-4);grid-template-columns:40px minmax(0,1fr) 24px}.stage-index{width:40px;height:40px}.stage-meta{grid-column:2;align-items:flex-start}.stage-chevron{grid-area:1/3}.stage-modules{padding:0 var(--space-3) var(--space-4)}.skills-grid{grid-template-columns:1fr}.lesson-header{align-items:flex-end}.lesson-header h1{font-size:1.9rem}.lesson-progress-ring{width:72px;height:72px}.lesson-progress-ring:before{width:58px;height:58px}.lesson-layout{padding-top:var(--space-6);gap:var(--space-6)}.choice-grid{grid-template-columns:1fr}.exercise{padding:var(--space-4)}.exercise-actions{flex-direction:column;align-items:stretch}.exercise-actions .button{width:100%}.lesson-footer>div{flex-direction:column}.lesson-nav-link.next{text-align:left;margin-left:0}.complete-lesson{grid-template-columns:42px 1fr}.complete-lesson .button{grid-column:1/-1;width:100%}.formula-block{font-size:1.125rem}.module-hero{padding:var(--space-5) var(--space-4);grid-template-columns:1fr}.module-hero-index{width:52px;height:52px;font-size:var(--fs-xl)}.module-hero-copy h1{font-size:1.9rem}.module-progress-card{grid-column:auto}.module-lessons-section{padding:var(--space-5) var(--space-4)}.module-lesson-card{padding:var(--space-4) var(--space-3);grid-template-columns:36px minmax(0,1fr) 18px}.module-navigation{grid-template-columns:1fr}.module-navigation>a.next{text-align:left}.module-hero-actions .button{width:100%}.skeleton-page .skeleton-row{grid-template-columns:1fr}.course-map-page{padding-top:var(--space-3)}.course-map-hero{padding:var(--space-5) 0}.course-map-hero h1{font-size:var(--fs-3xl)}.course-map-stats{grid-template-columns:repeat(2,1fr)}.course-map-stats div{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.course-map-stats div:nth-child(2n){border-right:0}.course-map-stats div:nth-child(n+3){border-bottom:0}.course-map-jump{grid-template-columns:1fr;padding-bottom:0;position:static}.course-map-stages{gap:var(--space-7);padding-top:var(--space-6)}.course-map-stage{scroll-margin-top:calc(var(--topbar-h) + var(--space-3))}.course-map-stage-header{align-items:start;gap:var(--space-3);grid-template-columns:50px minmax(0,1fr)}.course-map-stage-index{width:50px;height:50px;font-size:var(--fs-xl)}.course-map-stage-progress{grid-column:2;align-items:stretch}.course-map-stage-progress .progressbar{width:100%}.course-map-module{padding:var(--space-4)}.course-map-module-top{gap:var(--space-2);grid-template-columns:40px minmax(0,1fr) 34px}.course-map-module-number{width:40px;height:40px}.course-map-module h3{font-size:var(--fs-lg)}.course-map-module-summary{min-height:0}.course-map-lessons li a{gap:var(--space-2);grid-template-columns:26px minmax(0,1fr) auto;padding-inline:0}.course-map-lesson-state{width:26px;height:26px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}