@font-face{font-family:Bricolage Grotesque;font-style:normal;font-weight:200 800;font-stretch:100%;font-display:swap;src:url(/_next/static/media/2042050246a708c9-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:Bricolage Grotesque;font-style:normal;font-weight:200 800;font-stretch:100%;font-display:swap;src:url(/_next/static/media/0fdd058fab82a774-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Bricolage Grotesque;font-style:normal;font-weight:200 800;font-stretch:100%;font-display:swap;src:url(/_next/static/media/33553e7595b74ccf-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Bricolage Grotesque Fallback;src:local("Arial");ascent-override:88.21%;descent-override:25.61%;line-gap-override:0.00%;size-adjust:105.43%}.__className_23d1a5{font-family:Bricolage Grotesque,Bricolage Grotesque Fallback;font-style:normal}.__variable_23d1a5{--ff-display:"Bricolage Grotesque","Bricolage Grotesque Fallback"}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/d57a24ec54448a8e-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/bc08e10e1c60a660-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/7c309a1f4c99f6b1-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/9816a0e0ed309b6c-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Atkinson Hyperlegible Fallback;src:local("Arial");ascent-override:95.60%;descent-override:29.18%;line-gap-override:0.00%;size-adjust:99.37%}.__className_de3fe8{font-family:Atkinson Hyperlegible,Atkinson Hyperlegible Fallback;font-style:normal}.__variable_de3fe8{--ff-body:"Atkinson Hyperlegible","Atkinson Hyperlegible Fallback"}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/edc640959b0c7826-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/ac0e76ddaeeb7981-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/64d784ea54a4acde-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/ff71da380fbe67dd-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/6d831b18ae5b01dc-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/558ca1a6aa3cb55e-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/edc640959b0c7826-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/ac0e76ddaeeb7981-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/64d784ea54a4acde-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/ff71da380fbe67dd-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/6d831b18ae5b01dc-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/558ca1a6aa3cb55e-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:JetBrains Mono Fallback;src:local("Arial");ascent-override:75.79%;descent-override:22.29%;line-gap-override:0.00%;size-adjust:134.59%}.__className_571da3{font-family:JetBrains Mono,JetBrains Mono Fallback;font-style:normal}.__variable_571da3{--ff-code:"JetBrains Mono","JetBrains Mono Fallback"}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_AMS-Regular.a79f1c31.woff2) format("woff2"),url(/_next/static/media/KaTeX_AMS-Regular.1608a09b.woff) format("woff"),url(/_next/static/media/KaTeX_AMS-Regular.4aafdb68.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/_next/static/media/KaTeX_Caligraphic-Bold.ec17d132.woff2) format("woff2"),url(/_next/static/media/KaTeX_Caligraphic-Bold.b6770918.woff) format("woff"),url(/_next/static/media/KaTeX_Caligraphic-Bold.cce5b8ec.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Caligraphic-Regular.55fac258.woff2) format("woff2"),url(/_next/static/media/KaTeX_Caligraphic-Regular.dad44a7f.woff) format("woff"),url(/_next/static/media/KaTeX_Caligraphic-Regular.07ef19e7.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/_next/static/media/KaTeX_Fraktur-Bold.d42a5579.woff2) format("woff2"),url(/_next/static/media/KaTeX_Fraktur-Bold.9f256b85.woff) format("woff"),url(/_next/static/media/KaTeX_Fraktur-Bold.b18f59e1.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Fraktur-Regular.d3c882a6.woff2) format("woff2"),url(/_next/static/media/KaTeX_Fraktur-Regular.7c187121.woff) format("woff"),url(/_next/static/media/KaTeX_Fraktur-Regular.ed38e79f.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/_next/static/media/KaTeX_Main-Bold.c3fb5ac2.woff2) format("woff2"),url(/_next/static/media/KaTeX_Main-Bold.d181c465.woff) format("woff"),url(/_next/static/media/KaTeX_Main-Bold.b74a1a8b.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/_next/static/media/KaTeX_Main-BoldItalic.6f2bb1df.woff2) format("woff2"),url(/_next/static/media/KaTeX_Main-BoldItalic.e3f82f9d.woff) format("woff"),url(/_next/static/media/KaTeX_Main-BoldItalic.70d8b0a5.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/_next/static/media/KaTeX_Main-Italic.8916142b.woff2) format("woff2"),url(/_next/static/media/KaTeX_Main-Italic.9024d815.woff) format("woff"),url(/_next/static/media/KaTeX_Main-Italic.47373d1e.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Main-Regular.0462f03b.woff2) format("woff2"),url(/_next/static/media/KaTeX_Main-Regular.7f51fe03.woff) format("woff"),url(/_next/static/media/KaTeX_Main-Regular.b7f8fe9b.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/_next/static/media/KaTeX_Math-BoldItalic.572d331f.woff2) format("woff2"),url(/_next/static/media/KaTeX_Math-BoldItalic.f1035d8d.woff) format("woff"),url(/_next/static/media/KaTeX_Math-BoldItalic.a879cf83.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/_next/static/media/KaTeX_Math-Italic.f28c23ac.woff2) format("woff2"),url(/_next/static/media/KaTeX_Math-Italic.5295ba48.woff) format("woff"),url(/_next/static/media/KaTeX_Math-Italic.939bc644.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:normal;font-weight:700;src:url(/_next/static/media/KaTeX_SansSerif-Bold.8c5b5494.woff2) format("woff2"),url(/_next/static/media/KaTeX_SansSerif-Bold.bf59d231.woff) format("woff"),url(/_next/static/media/KaTeX_SansSerif-Bold.94e1e8dc.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:italic;font-weight:400;src:url(/_next/static/media/KaTeX_SansSerif-Italic.3b1e59b3.woff2) format("woff2"),url(/_next/static/media/KaTeX_SansSerif-Italic.7c9bc82b.woff) format("woff"),url(/_next/static/media/KaTeX_SansSerif-Italic.b4c20c84.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_SansSerif-Regular.ba21ed5f.woff2) format("woff2"),url(/_next/static/media/KaTeX_SansSerif-Regular.74048478.woff) format("woff"),url(/_next/static/media/KaTeX_SansSerif-Regular.d4d7ba48.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Script-Regular.03e9641d.woff2) format("woff2"),url(/_next/static/media/KaTeX_Script-Regular.07505710.woff) format("woff"),url(/_next/static/media/KaTeX_Script-Regular.fe9cbbe1.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Size1-Regular.eae34984.woff2) format("woff2"),url(/_next/static/media/KaTeX_Size1-Regular.e1e279cb.woff) format("woff"),url(/_next/static/media/KaTeX_Size1-Regular.fabc004a.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Size2-Regular.5916a24f.woff2) format("woff2"),url(/_next/static/media/KaTeX_Size2-Regular.57727022.woff) format("woff"),url(/_next/static/media/KaTeX_Size2-Regular.d6b476ec.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Size3-Regular.b4230e7e.woff2) format("woff2"),url(/_next/static/media/KaTeX_Size3-Regular.9acaf01c.woff) format("woff"),url(/_next/static/media/KaTeX_Size3-Regular.a144ef58.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Size4-Regular.10d95fd3.woff2) format("woff2"),url(/_next/static/media/KaTeX_Size4-Regular.7a996c9d.woff) format("woff"),url(/_next/static/media/KaTeX_Size4-Regular.fbccdabe.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/_next/static/media/KaTeX_Typewriter-Regular.a8709e36.woff2) format("woff2"),url(/_next/static/media/KaTeX_Typewriter-Regular.6258592b.woff) format("woff"),url(/_next/static/media/KaTeX_Typewriter-Regular.d97aaf4a.ttf) format("truetype")}.katex{font:normal 1.21em KaTeX_Main,math,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.19.0"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:min-content}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{--paper:#f4f7f6;--sheet:#ffffff;--grid:rgba(20,60,90,0.07);--grid-major:rgba(20,60,90,0.13);--ink:#13233a;--ink-soft:#4a5b70;--line:#d5dee3;--teal:#0b6e69;--teal-soft:#e3f2f0;--mark:#ffe066;--mark-strong:#f5c518;--error:#b42318;--error-soft:#fdecea;--key:#eaf0f2;--key-op:#dbe8ec;--focus:#0b6e69;--shadow:0 1px 0 rgba(19,35,58,0.06),0 8px 24px -12px rgba(19,35,58,0.25);--radius-lg:14px;--radius-sm:8px;--font-display:var(--ff-display),system-ui,sans-serif;--font-body:var(--ff-body),system-ui,sans-serif;--font-code:var(--ff-code),ui-monospace,monospace;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#0f1b25;--sheet:#152431;--grid:rgba(180,220,240,0.05);--grid-major:rgba(180,220,240,0.1);--ink:#e8eef2;--ink-soft:#9fb1c0;--line:#2a3d4d;--teal:#5ccfc5;--teal-soft:#173a3c;--mark:#5c4a00;--mark-strong:#f5c518;--error:#ff8a7a;--error-soft:#3a1d1b;--key:#1d3040;--key-op:#233a4b;--focus:#5ccfc5;--shadow:0 8px 24px -12px rgba(0,0,0,0.6);color-scheme:dark}}:root[data-theme=dark]{--paper:#0f1b25;--sheet:#152431;--grid:rgba(180,220,240,0.05);--grid-major:rgba(180,220,240,0.1);--ink:#e8eef2;--ink-soft:#9fb1c0;--line:#2a3d4d;--teal:#5ccfc5;--teal-soft:#173a3c;--mark:#5c4a00;--mark-strong:#f5c518;--error:#ff8a7a;--error-soft:#3a1d1b;--key:#1d3040;--key-op:#233a4b;--focus:#5ccfc5;--shadow:0 8px 24px -12px rgba(0,0,0,0.6);color-scheme:dark}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.55}a{color:var(--teal);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}h1,h2,h3{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}h1{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:700}h2{font-size:1.55rem;margin-top:2.2rem}h2,h3{font-weight:650}h3{font-size:1.15rem}p{margin:0 0 1em}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.wrap{max-width:1080px;margin:0 auto;padding:0 16px}.site-header{border-bottom:1px solid var(--line);background:var(--sheet);position:-webkit-sticky;position:sticky;top:0;z-index:20}.site-header .wrap{gap:16px;min-height:60px}.brand,.site-header .wrap{display:flex;align-items:center}.brand{gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-weight:700;font-size:1.2rem}.brand-mark{width:30px;height:30px;border-radius:7px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-family:var(--font-code);font-size:15px;font-weight:700}.nav{display:flex;gap:4px;margin-left:auto;align-items:center}.nav a,.nav summary{padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:.95rem;list-style:none}.nav a:hover,.nav summary:hover{background:var(--key)}.nav summary::-webkit-details-marker{display:none}.nav details{position:relative}.nav .menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--sheet);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:14px;display:grid;grid-template-columns:repeat(2,minmax(190px,1fr));grid-gap:4px 18px;gap:4px 18px;width:max-content;max-width:calc(100vw - 32px)}.menu h4{margin:6px 0 2px;font-size:.8rem;color:var(--ink-soft);font-weight:600}.menu a{display:block;padding:6px 8px}.theme-btn{border:1px solid var(--line);background:transparent;border-radius:8px;padding:6px 10px}@media (max-width:720px){.nav .hide-sm{display:none}.nav .menu{grid-template-columns:1fr;right:-60px}}main{padding:28px 0 60px}.page-head{margin-bottom:18px;max-width:760px}.page-head p{font-size:1.05rem}.crumbs,.page-head p{color:var(--ink-soft)}.crumbs{font-size:.9rem;margin-bottom:10px}.crumbs a{color:var(--ink-soft)}.pad{background-color:var(--sheet);background-image:linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:100px 100px,100px 100px,20px 20px,20px 20px;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:18px}.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:12px}.tab{border:1px solid var(--line);background:var(--sheet);border-radius:999px;padding:6px 13px;font-size:.92rem}.tab[aria-selected=true]{background:var(--ink);color:var(--sheet);border-color:var(--ink)}.input-row{display:flex;gap:10px;align-items:stretch}.math-input{flex:1 1;min-width:0;font-family:var(--font-code);font-size:1.25rem;padding:14px 16px;border:2px solid var(--ink);border-radius:12px;background:var(--sheet);resize:vertical;min-height:60px;line-height:1.4}.math-input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px var(--teal-soft)}.solve-btn{background:var(--ink);color:var(--sheet);border:0;border-radius:12px;padding:0 26px;font-family:var(--font-display);font-weight:700;font-size:1.1rem}.solve-btn:hover{background:var(--teal)}.solve-btn:disabled{opacity:.6}@media (max-width:560px){.input-row{flex-direction:column}.solve-btn{padding:14px}}.preview{min-height:34px;margin:10px 2px 0;color:var(--ink-soft);font-size:.95rem;display:flex;gap:8px;align-items:baseline;flex-wrap:wrap;overflow-x:auto}.preview .katex{font-size:1.15em;color:var(--ink)}.options{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:12px;align-items:flex-end}.field{display:flex;flex-direction:column;gap:3px;font-size:.85rem;color:var(--ink-soft)}.field input,.field select{border:1px solid var(--line);border-radius:8px;padding:7px 9px;background:var(--sheet);font-size:.95rem;min-width:84px;color:var(--ink)}.field input{width:140px}.answer .katex-display{display:inline-block;text-align:left;margin:.3em 0}.step-math .katex-display{text-align:left;margin:.25em 0}.step-math .katex-display>.katex{text-align:left}.keypad-toggle{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}.kp-groups{display:flex;gap:4px}.small-btn{border:1px solid var(--line);background:var(--sheet);border-radius:8px;padding:5px 10px;font-size:.88rem}.small-btn[aria-pressed=true]{background:var(--teal-soft);border-color:var(--teal)}.keypad{display:grid;grid-template-columns:repeat(auto-fill,minmax(54px,1fr));grid-gap:6px;gap:6px;margin-top:10px}.key{border:0;background:var(--key);border-radius:8px;padding:9px 4px;font-size:1rem;min-height:42px}.key:hover{background:var(--key-op)}.key .katex{font-size:.95em}.examples{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.examples span{font-size:.88rem;color:var(--ink-soft);margin-right:4px}.chip{border:1px dashed var(--line);background:transparent;border-radius:999px;padding:4px 11px;font-family:var(--font-code);font-size:.85rem}.chip:hover{border-style:solid;border-color:var(--teal);color:var(--teal)}.solution{margin-top:22px}.answer-card{background:var(--sheet);border:1px solid var(--line);border-left:6px solid var(--mark-strong);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow)}.answer-top{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:8px}.kind{font-size:.9rem}.kind,.problem{color:var(--ink-soft)}.problem{overflow-x:auto;padding:2px 0 8px}.answer{overflow-x:auto;padding:6px 0}.answer .katex{font-size:1.6em;background:linear-gradient(transparent 55%,var(--mark) 55%,var(--mark) 92%,transparent 92%);padding:0 4px}.answer.plain .katex{background:none}@media (max-width:560px){.tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}.tab{white-space:nowrap}}.answer-extra{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:8px;font-size:.95rem}.answer-extra div{overflow-x:auto}.answer-extra b{font-weight:600;color:var(--ink-soft);margin-right:6px}.note{margin-top:10px;font-size:.92rem;color:var(--ink-soft)}.actions{display:flex;gap:6px;flex-wrap:wrap}.steps{margin-top:18px;background:var(--sheet);border:1px solid var(--line);border-radius:var(--radius-lg);padding:6px 20px 14px}.steps-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding-top:10px}.steps-head h2{margin:0;font-size:1.25rem}.step-list{list-style:none;padding:0;margin:10px 0 0;counter-reset:step}.step{position:relative;padding:12px 0 12px 44px;border-top:1px solid var(--line)}.step:first-child{border-top:0}.step:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:12px;width:28px;height:28px;border-radius:50%;background:var(--teal-soft);color:var(--teal);display:grid;place-items:center;font-size:.85rem}.step-title,.step:before{font-weight:700}.step-text{color:var(--ink-soft);margin:2px 0 4px}.step-math{padding:4px 0}.step-math,.step-result{overflow-x:auto;overflow-y:hidden}.step-result{padding:4px 0 2px}.step-result:before{content:"⇒";color:var(--teal);margin-right:8px;font-weight:700}.substeps{list-style:none;margin:6px 0 0;padding:0 0 0 14px;border-left:2px solid var(--teal-soft)}.substeps .step{padding:8px 0 8px 6px;border-top:0}.substeps .step:before{display:none}.sub-toggle{border:0;background:none;color:var(--teal);padding:2px 0;font-size:.9rem;text-decoration:underline;text-underline-offset:3px}.table-wrap{overflow-x:auto;margin-top:16px}table.data{border-collapse:collapse;width:100%;font-size:.95rem;background:var(--sheet)}table.data caption{text-align:left;color:var(--ink-soft);font-size:.9rem;padding:4px 0 8px}table.data td,table.data th{padding:7px 10px;border-bottom:1px solid var(--line);text-align:left;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}table.data th{font-weight:600;color:var(--ink-soft)}.error-box{margin-top:18px;background:var(--error-soft);color:var(--error);border-radius:12px;padding:14px 16px}.error-box p{margin:0}.error-box p+p{margin-top:4px;color:var(--ink-soft);font-size:.93rem}.graph-box{margin-top:18px;background:var(--sheet);border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px}.graph-box canvas{width:100%;height:340px;display:block;touch-action:none;border-radius:8px;cursor:crosshair}.graph-bar{justify-content:space-between;gap:8px;align-items:center;font-size:.88rem;color:var(--ink-soft);margin-bottom:8px}.graph-bar,.legend{display:flex;flex-wrap:wrap}.legend{gap:12px}.legend i{display:inline-block;width:16px;height:3px;border-radius:2px;margin-right:5px;vertical-align:middle}.sci{max-width:560px}.sci-display{background:var(--sheet);border:2px solid var(--ink);border-radius:12px;padding:10px 14px;margin-bottom:12px;min-height:96px;display:flex;flex-direction:column;justify-content:space-between}.sci-status{display:flex;gap:10px;font-size:.8rem;color:var(--ink-soft)}.sci-expr{font-family:var(--font-code);font-size:1.15rem;word-break:break-all;min-height:1.6em;background:transparent;border:0;width:100%;padding:0}.sci-expr:focus{outline:none}.sci-result{font-family:var(--font-code);font-size:2rem;text-align:right;font-weight:600;overflow-x:auto;white-space:nowrap}.sci-keys{display:grid;grid-template-columns:repeat(6,1fr);grid-gap:6px;gap:6px}.sci-keys .key{min-height:46px;font-size:.98rem}.key.op{background:var(--key-op);font-weight:700}.key.eq{background:var(--ink);color:var(--sheet);font-weight:700}.key.eq:hover{background:var(--teal)}.key.on{outline:2px solid var(--teal)}.sci-layout{display:grid;grid-template-columns:minmax(0,560px) 1fr;grid-gap:20px;gap:20px;align-items:start}.history{background:var(--sheet);border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px 14px}.history h3{font-size:1rem}.history ol{list-style:none;padding:0;margin:0;max-height:360px;overflow:auto}.history li button{width:100%;text-align:right;border:0;background:none;padding:6px 4px;border-bottom:1px solid var(--line);font-family:var(--font-code);font-size:.9rem}.history li small{display:block;color:var(--ink-soft)}@media (max-width:860px){.sci-layout{grid-template-columns:1fr}}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:14px;gap:14px}.form-card{background:var(--sheet);border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px 16px}.form-card h3{margin-bottom:10px}.inline-form{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.inline-form input{width:96px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--sheet);font-family:var(--font-code)}.go{background:var(--ink);color:var(--sheet);border:0;border-radius:8px;padding:8px 14px;font-weight:700}.go:hover{background:var(--teal)}.matrix-grid{display:inline-grid;gap:4px;padding:8px 10px;border-left:2px solid var(--ink);border-right:2px solid var(--ink);border-radius:6px}.matrix-grid input{width:60px;text-align:center;border:1px solid var(--line);border-radius:6px;padding:6px 4px;background:var(--sheet);font-family:var(--font-code)}.matrices{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}textarea.data-input{width:100%;min-height:110px;border:2px solid var(--ink);border-radius:12px;padding:12px;font-family:var(--font-code);background:var(--sheet)}.content{max-width:760px;margin-top:40px}.content ol li,.content ul li{margin-bottom:6px}.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{font-weight:700;cursor:pointer}.faq details p{margin:8px 0 0;color:var(--ink-soft)}.tool-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));grid-gap:8px;gap:8px;margin-top:12px}.tool-links a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--ink);background:var(--sheet)}.tool-links a:hover{border-color:var(--teal)}.tool-links small{display:block;color:var(--ink-soft)}.site-footer{border-top:1px solid var(--line);padding:28px 0 40px;font-size:.92rem;color:var(--ink-soft);background:var(--sheet)}.site-footer .cols{display:flex;flex-wrap:wrap;gap:24px 48px}.site-footer ul{list-style:none;padding:0;margin:6px 0 0}.site-footer li{margin:4px 0}.site-footer a{color:var(--ink-soft)}.prose{max-width:720px}.loading{margin-top:18px;color:var(--ink-soft)}@media (prefers-reduced-motion:no-preference){.answer-card{animation:land .26s ease-out}@keyframes land{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}}@media print{.actions,.content,.examples,.keypad,.keypad-toggle,.site-footer,.site-header,.tabs{display:none!important}.pad{box-shadow:none}}