@font-face{font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.22"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.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;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 .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{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 .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 .clap,.katex .llap,.katex .rlap{position:relative;width:0}.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;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.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:.8333333333em}.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:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.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:1.6666666667em}.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:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.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:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.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:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.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:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.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:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.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:.4166666667em}.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:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.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:.8333333333em}.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:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.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:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.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:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.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:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.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:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.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{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 .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{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;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;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.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 .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 .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>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.login-page{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:48px 16px;background:linear-gradient(160deg,#f8f9ff,#eef3ff 55%,#dbeafee6)}.login-container{width:min(420px,100%)}.login-back{display:inline-flex;align-items:center;gap:6px;margin-bottom:16px;padding:0;border:none;background:none;font-size:.9rem;font-weight:600;color:#7c3aed;cursor:pointer;transition:color .15s ease}.login-back:hover{color:#6d28d9}.login-card{background:#ffffffeb;border-radius:28px;padding:36px;box-shadow:0 35px 60px #13343b1f;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.login-header{text-align:center}.login-logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:1.5rem;color:#13343b}.login-logo__symbol{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#13343b;font-size:1.5rem;font-weight:700}.login-logo__text{font-size:1.5rem}.login-tagline{margin-top:12px;color:#5f6f7a;font-size:.95rem}.login-panel{margin-top:32px}.login-panel__title{font-size:2rem;font-weight:700;color:#13343b;margin-bottom:12px}.login-panel__subtitle{color:#5f6f7a;font-size:.95rem;line-height:1.6}.login-alert{margin-top:20px;padding:14px 16px;border-radius:14px;font-size:.9rem}.login-alert--error{background:#ff54591f;border:1px solid rgba(255,84,89,.3);color:#c0152f}.login-alert--success{background:#21808d1f;border:1px solid rgba(33,128,141,.28);color:#1d7480}.login-form{margin-top:28px;display:flex;flex-direction:column;gap:18px}.login-field{display:flex;flex-direction:column;gap:8px}.login-label{font-weight:600;font-size:.95rem;color:#2c3c45}.login-input-wrapper{position:relative}.login-input{width:100%;padding:14px 16px;border:1px solid #d6dde8;border-radius:14px;background:#fff;color:#13343b;font-size:.95rem;transition:border-color .18s ease,box-shadow .18s ease}.login-input--with-toggle{padding-right:48px}.login-input:focus{outline:none;border-color:#7c3aed;box-shadow:0 0 0 3px #7c3aed33}.login-input::placeholder{color:#9aa8b4}.login-visibility-toggle{position:absolute;top:50%;right:14px;transform:translateY(-50%);border:none;background:transparent;color:#94a3b8;cursor:pointer;padding:6px;border-radius:8px;transition:color .15s ease,background .15s ease}.login-visibility-toggle:hover{color:#1d4ed8;background:#2563eb14}.login-visibility-toggle__icon{width:20px;height:20px}.login-submit{margin-top:8px;width:100%;padding:14px 16px;border:none;border-radius:16px;font-size:1rem;font-weight:600;color:#fff;cursor:pointer;background:linear-gradient(135deg,#7c3aed,#6d28d9);box-shadow:0 18px 30px #7c3aed38;transition:transform .18s ease,box-shadow .18s ease,opacity .18s ease}.login-submit:hover{transform:translateY(-1px);box-shadow:0 22px 34px #7c3aed47}.login-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.login-switcher{margin-top:28px;display:flex;flex-direction:column;gap:12px;text-align:center}.login-switcher__text{color:#5f6f7a;font-size:.92rem}.login-switcher__row{display:flex;justify-content:center;align-items:center;gap:8px}.login-link{border:none;background:none;padding:0;color:#7c3aed;font-size:.92rem;font-weight:600;cursor:pointer;transition:color .15s ease}.login-link:hover{color:#6d28d9}.login-link--bold{font-weight:700}.login-footer{margin-top:36px;text-align:center;color:#83929d;font-size:.85rem}@media (max-width: 480px){.login-card{padding:28px 20px;border-radius:24px}.login-panel__title{font-size:1.75rem}.login-logo__symbol{width:40px;height:40px;font-size:1.3rem}}:root{--color-white: rgba(255, 255, 255, 1);--color-black: rgba(0, 0, 0, 1);--color-cream-50: rgba(252, 252, 249, 1);--color-cream-100: rgba(255, 255, 253, 1);--color-gray-200: rgba(245, 245, 245, 1);--color-gray-300: rgba(167, 169, 169, 1);--color-gray-400: rgba(119, 124, 124, 1);--color-slate-500: rgba(98, 108, 113, 1);--color-brown-600: rgba(94, 82, 64, 1);--color-charcoal-700: rgba(31, 33, 33, 1);--color-charcoal-800: rgba(38, 40, 40, 1);--color-slate-900: rgba(19, 52, 59, 1);--color-teal-300: rgba(50, 184, 198, 1);--color-teal-400: rgba(45, 166, 178, 1);--color-teal-500: rgba(33, 128, 141, 1);--color-teal-600: rgba(29, 116, 128, 1);--color-teal-700: rgba(26, 104, 115, 1);--color-teal-800: rgba(41, 150, 161, 1);--color-red-400: rgba(255, 84, 89, 1);--color-red-500: rgba(192, 21, 47, 1);--color-orange-400: rgba(230, 129, 97, 1);--color-orange-500: rgba(168, 75, 47, 1);--color-brown-600-rgb: 94, 82, 64;--color-teal-500-rgb: 33, 128, 141;--color-slate-900-rgb: 19, 52, 59;--color-slate-500-rgb: 98, 108, 113;--color-red-500-rgb: 192, 21, 47;--color-red-400-rgb: 255, 84, 89;--color-orange-500-rgb: 168, 75, 47;--color-orange-400-rgb: 230, 129, 97;--color-bg-1: rgba(59, 130, 246, .08);--color-bg-2: rgba(245, 158, 11, .08);--color-bg-3: rgba(34, 197, 94, .08);--color-bg-4: rgba(239, 68, 68, .08);--color-bg-5: rgba(147, 51, 234, .08);--color-bg-6: rgba(249, 115, 22, .08);--color-bg-7: rgba(236, 72, 153, .08);--color-bg-8: rgba(6, 182, 212, .08);--color-background: var(--color-cream-50);--color-surface: var(--color-cream-100);--color-text: var(--color-slate-900);--color-text-secondary: var(--color-slate-500);--color-primary: var(--color-teal-500);--color-primary-hover: var(--color-teal-600);--color-primary-active: var(--color-teal-700);--color-secondary: rgba(var(--color-brown-600-rgb), .12);--color-secondary-hover: rgba(var(--color-brown-600-rgb), .2);--color-secondary-active: rgba(var(--color-brown-600-rgb), .25);--color-border: rgba(var(--color-brown-600-rgb), .2);--color-btn-primary-text: var(--color-white);--color-card-border: rgba(var(--color-brown-600-rgb), .12);--color-card-border-inner: rgba(var(--color-brown-600-rgb), .12);--color-error: var(--color-red-500);--color-success: var(--color-teal-500);--color-warning: var(--color-orange-500);--color-info: var(--color-slate-500);--color-focus-ring: rgba(var(--color-teal-500-rgb), .4);--color-select-caret: rgba(var(--color-slate-900-rgb), .8);--focus-ring: 0 0 0 3px var(--color-focus-ring);--focus-outline: 2px solid var(--color-primary);--status-bg-opacity: .15;--status-border-opacity: .25;--select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--color-success-rgb: 33, 128, 141;--color-error-rgb: 192, 21, 47;--color-warning-rgb: 168, 75, 47;--color-info-rgb: 98, 108, 113;--font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 14px;--font-size-md: 14px;--font-size-lg: 16px;--font-size-xl: 18px;--font-size-2xl: 20px;--font-size-3xl: 24px;--font-size-4xl: 30px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 550;--font-weight-bold: 600;--line-height-tight: 1.2;--line-height-normal: 1.5;--letter-spacing-tight: -.01em;--space-0: 0;--space-1: 1px;--space-2: 2px;--space-4: 4px;--space-6: 6px;--space-8: 8px;--space-10: 10px;--space-12: 12px;--space-16: 16px;--space-20: 20px;--space-24: 24px;--space-32: 32px;--radius-sm: 6px;--radius-base: 8px;--radius-md: 10px;--radius-lg: 12px;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .02);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04), 0 1px 2px rgba(0, 0, 0, .02);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .04), 0 2px 4px -1px rgba(0, 0, 0, .02);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .04), 0 4px 6px -2px rgba(0, 0, 0, .02);--shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, .15), inset 0 -1px 0 rgba(0, 0, 0, .03);--duration-fast: .15s;--duration-normal: .25s;--ease-standard: cubic-bezier(.16, 1, .3, 1);--container-sm: 640px;--container-md: 768px;--container-lg: 1024px;--container-xl: 1280px}@media (prefers-color-scheme: dark){:root{--color-gray-400-rgb: 119, 124, 124;--color-teal-300-rgb: 50, 184, 198;--color-gray-300-rgb: 167, 169, 169;--color-gray-200-rgb: 245, 245, 245;--color-bg-1: rgba(29, 78, 216, .15);--color-bg-2: rgba(180, 83, 9, .15);--color-bg-3: rgba(21, 128, 61, .15);--color-bg-4: rgba(185, 28, 28, .15);--color-bg-5: rgba(107, 33, 168, .15);--color-bg-6: rgba(194, 65, 12, .15);--color-bg-7: rgba(190, 24, 93, .15);--color-bg-8: rgba(8, 145, 178, .15);--color-background: var(--color-charcoal-700);--color-surface: var(--color-charcoal-800);--color-text: var(--color-gray-200);--color-text-secondary: rgba(var(--color-gray-300-rgb), .7);--color-primary: var(--color-teal-300);--color-primary-hover: var(--color-teal-400);--color-primary-active: var(--color-teal-800);--color-secondary: rgba(var(--color-gray-400-rgb), .15);--color-secondary-hover: rgba(var(--color-gray-400-rgb), .25);--color-secondary-active: rgba(var(--color-gray-400-rgb), .3);--color-border: rgba(var(--color-gray-400-rgb), .3);--color-error: var(--color-red-400);--color-success: var(--color-teal-300);--color-warning: var(--color-orange-400);--color-info: var(--color-gray-300);--color-focus-ring: rgba(var(--color-teal-300-rgb), .4);--color-btn-primary-text: var(--color-white);--color-card-border: rgba(var(--color-gray-400-rgb), .2);--color-card-border-inner: rgba(var(--color-gray-400-rgb), .15);--shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, .1), inset 0 -1px 0 rgba(0, 0, 0, .15);--button-border-secondary: rgba(var(--color-gray-400-rgb), .2);--color-border-secondary: rgba(var(--color-gray-400-rgb), .2);--color-select-caret: rgba(var(--color-gray-200-rgb), .8);--focus-ring: 0 0 0 3px var(--color-focus-ring);--focus-outline: 2px solid var(--color-primary);--status-bg-opacity: .15;--status-border-opacity: .25;--select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--color-success-rgb: var(--color-teal-300-rgb);--color-error-rgb: var(--color-red-400-rgb);--color-warning-rgb: var(--color-orange-400-rgb);--color-info-rgb: var(--color-gray-300-rgb)}}[data-color-scheme=dark]{--color-gray-400-rgb: 119, 124, 124;--color-teal-300-rgb: 50, 184, 198;--color-gray-300-rgb: 167, 169, 169;--color-gray-200-rgb: 245, 245, 245;--color-bg-1: rgba(29, 78, 216, .15);--color-bg-2: rgba(180, 83, 9, .15);--color-bg-3: rgba(21, 128, 61, .15);--color-bg-4: rgba(185, 28, 28, .15);--color-bg-5: rgba(107, 33, 168, .15);--color-bg-6: rgba(194, 65, 12, .15);--color-bg-7: rgba(190, 24, 93, .15);--color-bg-8: rgba(8, 145, 178, .15);--color-background: var(--color-charcoal-700);--color-surface: var(--color-charcoal-800);--color-text: var(--color-gray-200);--color-text-secondary: rgba(var(--color-gray-300-rgb), .7);--color-primary: var(--color-teal-300);--color-primary-hover: var(--color-teal-400);--color-primary-active: var(--color-teal-800);--color-secondary: rgba(var(--color-gray-400-rgb), .15);--color-secondary-hover: rgba(var(--color-gray-400-rgb), .25);--color-secondary-active: rgba(var(--color-gray-400-rgb), .3);--color-border: rgba(var(--color-gray-400-rgb), .3);--color-error: var(--color-red-400);--color-success: var(--color-teal-300);--color-warning: var(--color-orange-400);--color-info: var(--color-gray-300);--color-focus-ring: rgba(var(--color-teal-300-rgb), .4);--color-btn-primary-text: var(--color-white);--color-card-border: rgba(var(--color-gray-400-rgb), .15);--color-card-border-inner: rgba(var(--color-gray-400-rgb), .15);--shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, .1), inset 0 -1px 0 rgba(0, 0, 0, .15);--color-border-secondary: rgba(var(--color-gray-400-rgb), .2);--color-select-caret: rgba(var(--color-gray-200-rgb), .8);--focus-ring: 0 0 0 3px var(--color-focus-ring);--focus-outline: 2px solid var(--color-primary);--status-bg-opacity: .15;--status-border-opacity: .25;--select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");--color-success-rgb: var(--color-teal-300-rgb);--color-error-rgb: var(--color-red-400-rgb);--color-warning-rgb: var(--color-orange-400-rgb);--color-info-rgb: var(--color-gray-300-rgb)}[data-color-scheme=light]{--color-brown-600-rgb: 94, 82, 64;--color-teal-500-rgb: 33, 128, 141;--color-slate-900-rgb: 19, 52, 59;--color-background: var(--color-cream-50);--color-surface: var(--color-cream-100);--color-text: var(--color-slate-900);--color-text-secondary: var(--color-slate-500);--color-primary: var(--color-teal-500);--color-primary-hover: var(--color-teal-600);--color-primary-active: var(--color-teal-700);--color-secondary: rgba(var(--color-brown-600-rgb), .12);--color-secondary-hover: rgba(var(--color-brown-600-rgb), .2);--color-secondary-active: rgba(var(--color-brown-600-rgb), .25);--color-border: rgba(var(--color-brown-600-rgb), .2);--color-btn-primary-text: var(--color-white);--color-card-border: rgba(var(--color-brown-600-rgb), .12);--color-card-border-inner: rgba(var(--color-brown-600-rgb), .12);--color-error: var(--color-red-500);--color-success: var(--color-teal-500);--color-warning: var(--color-orange-500);--color-info: var(--color-slate-500);--color-focus-ring: rgba(var(--color-teal-500-rgb), .4);--color-success-rgb: var(--color-teal-500-rgb);--color-error-rgb: var(--color-red-500-rgb);--color-warning-rgb: var(--color-orange-500-rgb);--color-info-rgb: var(--color-slate-500-rgb)}html{font-size:var(--font-size-base);font-family:var(--font-family-base);line-height:var(--line-height-normal);color:var(--color-text);background-color:var(--color-background);-webkit-font-smoothing:antialiased;box-sizing:border-box}body{margin:0;padding:0}.landing-page{--color-background: #f4f7ff;--color-surface: #ffffff;--color-text: #10203b;--color-text-secondary: #5b6b86;--color-border: rgba(16, 32, 59, .08);--color-card-border: rgba(16, 32, 59, .08);--color-card-border-inner: rgba(16, 32, 59, .05);--color-bg-1: rgba(59, 130, 246, .16);--color-bg-2: rgba(245, 158, 11, .12);--color-bg-3: rgba(34, 197, 94, .12);--color-bg-6: rgba(59, 130, 246, .08);--color-bg-8: rgba(14, 165, 233, .1);background:radial-gradient(circle at top left,rgba(59,130,246,.12),transparent 55%),radial-gradient(circle at bottom right,rgba(16,185,129,.12),transparent 45%),#f8fbff;color:var(--color-text)}*,*:before,*:after{box-sizing:inherit}h1,h2,h3,h4,h5,h6{margin:0;font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--color-text);letter-spacing:var(--letter-spacing-tight)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-md)}p{margin:0 0 var(--space-16) 0}a{color:var(--color-primary);text-decoration:none;transition:color var(--duration-fast) var(--ease-standard)}a:hover{color:var(--color-primary-hover)}code,pre{font-family:var(--font-family-mono);font-size:calc(var(--font-size-base) * .95);background-color:var(--color-secondary);border-radius:var(--radius-sm)}code{padding:var(--space-1) var(--space-4)}pre{padding:var(--space-16);margin:var(--space-16) 0;overflow:auto;border:1px solid var(--color-border)}pre code{background:none;padding:0}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-8) var(--space-16);border-radius:var(--radius-base);font-size:var(--font-size-base);font-weight:500;line-height:1.5;cursor:pointer;transition:all var(--duration-normal) var(--ease-standard);border:none;text-decoration:none;position:relative}.btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}.btn--primary{background:var(--color-primary);color:var(--color-btn-primary-text)}.btn--primary:hover{background:var(--color-primary-hover)}.btn--primary:active{background:var(--color-primary-active)}.btn--secondary{background:var(--color-secondary);color:var(--color-text)}.btn--secondary:hover{background:var(--color-secondary-hover)}.btn--secondary:active{background:var(--color-secondary-active)}.btn--outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text)}.btn--outline:hover{background:var(--color-secondary)}.btn--sm{padding:var(--space-4) var(--space-12);font-size:var(--font-size-sm);border-radius:var(--radius-sm)}.btn--lg{padding:var(--space-10) var(--space-20);font-size:var(--font-size-lg);border-radius:var(--radius-md)}.btn--full-width{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.form-control{display:block;width:100%;padding:var(--space-8) var(--space-12);font-size:var(--font-size-md);line-height:1.5;color:var(--color-text);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-base);transition:border-color var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard)}textarea.form-control{font-family:var(--font-family-base);font-size:var(--font-size-base)}select.form-control{padding:var(--space-8) var(--space-12);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:var(--select-caret-light);background-repeat:no-repeat;background-position:right var(--space-12) center;background-size:16px;padding-right:var(--space-32)}@media (prefers-color-scheme: dark){select.form-control{background-image:var(--select-caret-dark)}}[data-color-scheme=dark] select.form-control{background-image:var(--select-caret-dark)}[data-color-scheme=light] select.form-control{background-image:var(--select-caret-light)}.form-control:focus{border-color:var(--color-primary);outline:var(--focus-outline)}.form-label{display:block;margin-bottom:var(--space-8);font-weight:var(--font-weight-medium);font-size:var(--font-size-sm)}.form-group{margin-bottom:var(--space-16)}.card{background-color:var(--color-surface);border-radius:var(--radius-lg);border:1px solid var(--color-card-border);box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow var(--duration-normal) var(--ease-standard)}.card:hover{box-shadow:var(--shadow-md)}.card__body{padding:var(--space-16)}.card__header,.card__footer{padding:var(--space-16);border-bottom:1px solid var(--color-card-border-inner)}.status{display:inline-flex;align-items:center;padding:var(--space-6) var(--space-12);border-radius:var(--radius-full);font-weight:var(--font-weight-medium);font-size:var(--font-size-sm)}.status--success{background-color:rgba(var(--color-success-rgb, 33, 128, 141),var(--status-bg-opacity));color:var(--color-success);border:1px solid rgba(var(--color-success-rgb, 33, 128, 141),var(--status-border-opacity))}.status--error{background-color:rgba(var(--color-error-rgb, 192, 21, 47),var(--status-bg-opacity));color:var(--color-error);border:1px solid rgba(var(--color-error-rgb, 192, 21, 47),var(--status-border-opacity))}.status--warning{background-color:rgba(var(--color-warning-rgb, 168, 75, 47),var(--status-bg-opacity));color:var(--color-warning);border:1px solid rgba(var(--color-warning-rgb, 168, 75, 47),var(--status-border-opacity))}.status--info{background-color:rgba(var(--color-info-rgb, 98, 108, 113),var(--status-bg-opacity));color:var(--color-info);border:1px solid rgba(var(--color-info-rgb, 98, 108, 113),var(--status-border-opacity))}.container{width:100%;margin-right:auto;margin-left:auto;padding-right:var(--space-16);padding-left:var(--space-16)}@media (min-width: 640px){.container{max-width:var(--container-sm)}}@media (min-width: 768px){.container{max-width:var(--container-md)}}@media (min-width: 1024px){.container{max-width:var(--container-lg)}}@media (min-width: 1280px){.container{max-width:var(--container-xl)}}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-4{gap:var(--space-4)}.gap-8{gap:var(--space-8)}.gap-16{gap:var(--space-16)}.m-0{margin:0}.mt-8{margin-top:var(--space-8)}.mb-8{margin-bottom:var(--space-8)}.mx-8{margin-left:var(--space-8);margin-right:var(--space-8)}.my-8{margin-top:var(--space-8);margin-bottom:var(--space-8)}.p-0{padding:0}.py-8{padding-top:var(--space-8);padding-bottom:var(--space-8)}.px-8{padding-left:var(--space-8);padding-right:var(--space-8)}.py-16{padding-top:var(--space-16);padding-bottom:var(--space-16)}.px-16{padding-left:var(--space-16);padding-right:var(--space-16)}.block{display:block}.hidden{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}:focus-visible{outline:var(--focus-outline);outline-offset:2px}[data-color-scheme=dark] .btn--outline{border:1px solid var(--color-border-secondary)}@font-face{font-family:FKGroteskNeue;src:url(https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2) format("woff2")}:root{--color-funfinity-blue: #2563eb;--color-funfinity-purple: #7c3aed;--color-funfinity-gold: #fbbf24;--color-funfinity-blue-hover: #1d4ed8;--color-funfinity-purple-hover: #6d28d9}.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--color-surface);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(15,23,42,.06);transition:all var(--duration-normal) var(--ease-standard);transform:translateY(0)}.header--scrolled{background:#fffffff7;box-shadow:0 6px 20px #0f172a14}.header--hidden{transform:translateY(-100%)}.header__content{display:flex;align-items:center;justify-content:space-between;padding:var(--space-16) 0}.logo{display:flex;align-items:center;gap:var(--space-8);font-weight:var(--font-weight-bold);font-size:var(--font-size-xl);color:var(--color-text)}.logo__symbol{background:linear-gradient(135deg,var(--color-funfinity-gold),#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold)}.header__nav{display:flex;gap:var(--space-32)}.header__actions{display:flex;align-items:center;gap:var(--space-16)}.header__signin{display:inline-flex}.mobile-sign-in{display:none}.nav-link{color:var(--color-text-secondary);font-weight:var(--font-weight-medium);transition:color var(--duration-fast) var(--ease-standard);background:none;border:none;padding:0;cursor:pointer}.nav-link:visited{color:var(--color-text-secondary)}.nav-link:hover{color:var(--color-funfinity-blue)}.nav-link--button{font:inherit}.footer-link-button{color:var(--color-text-secondary);display:block;background:none;border:none;padding:0;text-align:left;cursor:pointer;margin-bottom:var(--space-8)}.footer-link-button:hover{color:var(--color-funfinity-blue)}.header__cta{background:var(--color-funfinity-purple)}.header__cta:hover{background:var(--color-funfinity-purple-hover)}.mobile-menu-btn{display:none;flex-direction:column;gap:var(--space-4);background:none;border:none;cursor:pointer}.mobile-menu-btn span{width:24px;height:3px;background:var(--color-text);border-radius:var(--radius-sm);transition:all var(--duration-normal) var(--ease-standard)}.hero{padding:140px 0 var(--space-32);background:linear-gradient(160deg,#fff,#eef3ff 55%,#dbeafee6);min-height:80vh;display:flex;align-items:center;position:relative}.hero:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 20% 20%,rgba(59,130,246,.25),transparent 45%),radial-gradient(circle at 85% 30%,rgba(99,102,241,.22),transparent 40%);pointer-events:none}.hero .container{position:relative;z-index:1}.hero__content{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-32);align-items:center}.hero__title{font-size:clamp(var(--font-size-3xl),4vw,48px);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);margin-bottom:var(--space-24);color:var(--color-text)}.hero__subtitle{font-size:var(--font-size-xl);color:var(--color-text-secondary);line-height:var(--line-height-normal);margin-bottom:var(--space-32);max-width:520px}.hero__cta{display:flex;gap:var(--space-16);flex-wrap:wrap}.hero__visual{display:flex;justify-content:center;align-items:center}.cta-primary{background:var(--color-funfinity-purple);color:var(--color-white)}.cta-primary:hover{background:var(--color-funfinity-purple-hover)}.mockup{position:relative}.mockup__device{width:320px;height:500px;background:linear-gradient(160deg,#fff,#f1f5ff);border-radius:32px;padding:var(--space-20);box-shadow:0 30px 60px #0f172a1f;border:1px solid rgba(15,23,42,.08)}.mockup__screen{width:100%;height:100%;background:var(--color-white);border-radius:24px;padding:var(--space-16);overflow:hidden;box-shadow:inset 0 0 0 1px #0f172a0a}.math-problem{text-align:center}.problem-text{font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);margin-bottom:var(--space-16);color:var(--color-text)}.solution-steps{text-align:left;margin:var(--space-16) 0}.step{padding:var(--space-8);margin-bottom:var(--space-8);background:var(--color-bg-2);border-radius:var(--radius-base);font-size:var(--font-size-sm)}.answer{font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);color:var(--color-success);margin-top:var(--space-16)}.section-header{text-align:center;margin-bottom:var(--space-32)}.section-title{font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold);margin-bottom:var(--space-16);color:var(--color-text)}.section-subtitle{font-size:var(--font-size-lg);color:var(--color-text-secondary)}.how-it-works{padding:var(--space-32) 0;background:var(--color-surface)}.steps{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:var(--space-24);align-items:center;max-width:1200px;margin:0 auto}.step-card{text-align:center;padding:var(--space-24);background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-card-border);transition:transform var(--duration-normal) var(--ease-standard)}.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.step-icon{font-size:48px;margin-bottom:var(--space-16)}.step-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-12);color:var(--color-text)}.step-description{color:var(--color-text-secondary);line-height:var(--line-height-normal)}.step-arrow{font-size:var(--font-size-2xl);color:var(--color-funfinity-blue);font-weight:var(--font-weight-bold)}.features{padding:var(--space-32) 0;background:var(--color-background)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-24)}.feature-card{padding:var(--space-24);background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-card-border);transition:all var(--duration-normal) var(--ease-standard)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.feature-icon{font-size:48px;margin-bottom:var(--space-16)}.feature-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-12);color:var(--color-text)}.feature-description{color:var(--color-text-secondary);line-height:var(--line-height-normal)}.showcase{padding:var(--space-32) 0;background:linear-gradient(180deg,#fffffff2,#ecf8ffe6)}.showcase-content{max-width:800px;margin:0 auto}.showcase-tabs{display:flex;justify-content:center;gap:var(--space-8);margin-bottom:var(--space-32)}.tab-btn{padding:var(--space-12) var(--space-20);background:var(--color-white);border:2px solid var(--color-border);border-radius:var(--radius-full);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--duration-normal) var(--ease-standard)}.tab-btn.active,.tab-btn:hover{background:var(--color-funfinity-blue);border-color:var(--color-funfinity-blue);color:var(--color-white)}.tab-panel{display:none;padding:var(--space-32);background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.tab-panel.active{display:block}.panel-content h3{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-16);color:var(--color-text)}.panel-content p{color:var(--color-text-secondary);margin-bottom:var(--space-20)}.feature-list{display:flex;flex-direction:column;gap:var(--space-12)}.feature-item{display:flex;align-items:center;color:var(--color-text);font-weight:var(--font-weight-medium)}.testimonials{padding:var(--space-32) 0;background:var(--color-surface)}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-24)}.testimonial-card{padding:var(--space-24);background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-card-border)}.testimonial-stars{font-size:var(--font-size-lg);margin-bottom:var(--space-16)}.testimonial-quote{font-style:italic;line-height:var(--line-height-normal);margin-bottom:var(--space-20);color:var(--color-text)}.testimonial-author strong{display:block;font-weight:var(--font-weight-semibold);color:var(--color-text)}.testimonial-author span{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.pricing{padding:var(--space-32) 0;background:var(--color-background)}.pricing-card{max-width:400px;margin:0 auto;padding:var(--space-32);background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:2px solid var(--color-funfinity-purple);text-align:center}.pricing-header{margin-bottom:var(--space-24)}.price{display:flex;align-items:baseline;justify-content:center;gap:var(--space-8);margin-bottom:var(--space-12)}.price-amount{font-size:48px;font-weight:var(--font-weight-bold);color:var(--color-funfinity-purple)}.price-period{font-size:var(--font-size-lg);color:var(--color-text-secondary)}.price-note{color:var(--color-success);font-weight:var(--font-weight-medium)}.pricing-features{margin-bottom:var(--space-24);text-align:left}.pricing-features .feature-item{padding:var(--space-8) 0;border-bottom:1px solid var(--color-border)}.pricing-features .feature-item:last-child{border-bottom:none}.pricing-cta{text-align:center}.pricing-cta .btn{background:var(--color-funfinity-purple);margin-bottom:var(--space-16)}.pricing-cta .btn:hover{background:var(--color-funfinity-purple-hover)}.guarantee-text{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--space-12)}.guarantee-badge{display:inline-block;padding:var(--space-6) var(--space-12);background:var(--color-bg-3);color:var(--color-success);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}.social-proof{padding:var(--space-24) 0;background:linear-gradient(180deg,#ecf8ffa6,#ffffffe6);border-top:1px solid rgba(15,23,42,.06);border-bottom:1px solid rgba(15,23,42,.05)}.social-proof-content{display:flex;justify-content:center;align-items:center;gap:var(--space-32);flex-wrap:wrap;text-align:center}.proof-item{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.proof-item strong{color:var(--color-text)}.animate-on-scroll{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}.animate-visible{opacity:1;transform:translateY(0)}.modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all var(--duration-normal) var(--ease-standard)}.modal.show{opacity:1;visibility:visible}.modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:var(--color-white);border-radius:var(--radius-lg);max-width:600px;width:90%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-lg);position:relative;z-index:1}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-24);border-bottom:1px solid var(--color-border)}.modal-header h3{margin:0;font-size:var(--font-size-xl);color:var(--color-text)}.modal-close{background:none;border:none;font-size:var(--font-size-2xl);cursor:pointer;color:var(--color-text-secondary);padding:var(--space-8)}.modal-close:hover{color:var(--color-text)}.modal-body{padding:var(--space-24)}.demo-video-placeholder{margin-bottom:var(--space-24)}.video-placeholder{background:var(--color-bg-1);height:200px;border-radius:var(--radius-base);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--color-text-secondary)}.play-button{font-size:48px;color:var(--color-funfinity-blue);margin-bottom:var(--space-16)}.demo-features ul{list-style:none;padding:0;margin:0}.demo-features li{padding:var(--space-8) 0;color:var(--color-text)}.modal-footer{padding:var(--space-24);text-align:center;border-top:1px solid var(--color-border)}.modal-note{margin-top:var(--space-12);color:var(--color-text-secondary);font-size:var(--font-size-sm)}.footer{padding:var(--space-32) 0 var(--space-24);background:var(--color-surface);border-top:1px solid var(--color-border)}.footer__content{display:grid;grid-template-columns:minmax(240px,1fr) 1fr;gap:var(--space-32);margin-bottom:var(--space-24);align-items:flex-start}.footer__links{display:flex;justify-content:flex-start;gap:var(--space-32)}.footer__links .link-column{min-width:140px}.footer__brand .logo{margin-bottom:var(--space-16)}.footer__description{color:var(--color-text-secondary);line-height:var(--line-height-normal)}.link-column h4{font-size:var(--font-size-md);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-16);color:var(--color-text)}.link-column a{display:block;margin-bottom:var(--space-8);color:var(--color-text-secondary);transition:color var(--duration-fast) var(--ease-standard)}.link-column a:visited{color:var(--color-text-secondary)}.link-column a:hover{color:var(--color-funfinity-blue)}.footer__bottom{display:flex;justify-content:space-between;align-items:center;padding-top:var(--space-24);border-top:1px solid var(--color-border)}.footer__bottom p{color:var(--color-text-secondary);margin:0}@media (max-width: 768px){.header__nav{display:none}.header__nav.header__nav--open{display:flex;position:absolute;top:100%;left:0;right:0;background:var(--color-white);flex-direction:column;padding:var(--space-16);box-shadow:var(--shadow-md);border-top:1px solid var(--color-border);gap:var(--space-16)}.mobile-menu-btn{display:flex}.header__signin{display:none}.mobile-sign-in{display:inline-flex;width:100%}.header__actions{gap:var(--space-12)}.hero__content{grid-template-columns:1fr;text-align:center;gap:var(--space-24)}.hero__cta{justify-content:center}.about{padding:80px 0}.steps{grid-template-columns:1fr;gap:var(--space-16)}.step-arrow{display:none}.showcase-tabs{flex-direction:column;align-items:center}.social-proof-content{flex-direction:column;gap:var(--space-16)}.footer__content{grid-template-columns:1fr;text-align:center}.footer__links{flex-direction:column;align-items:center;gap:var(--space-24)}.footer__bottom{flex-direction:column;gap:var(--space-16);text-align:center}.mockup__device{width:280px;height:420px}}@media (max-width: 480px){.hero{padding:100px 0 var(--space-24)}.hero__title{font-size:var(--font-size-2xl)}.hero__cta{flex-direction:column;align-items:center}.btn--lg{padding:var(--space-12) var(--space-24);font-size:var(--font-size-md)}.mockup__device{width:240px;height:360px}}.about-page{min-height:100vh;background:linear-gradient(160deg,#f6f7ff,#fff 55%,#f0f4ff);color:var(--color-text);display:flex;flex-direction:column}.about-header{position:sticky;top:0;z-index:10;background:#ffffffeb;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid rgba(15,23,42,.08)}.about-header__container{display:flex;align-items:center;justify-content:space-between;padding:var(--space-16) 0}.logo-button{background:none;border:none;padding:0;cursor:pointer;display:inline-flex;align-items:center}.logo-button:focus-visible{outline:var(--focus-outline);outline-offset:4px}.about-header__actions{display:flex;align-items:center;gap:var(--space-16)}.about-hero{position:relative;padding:clamp(80px,10vw,140px) 0}.about-hero:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 14% 22%,rgba(124,58,237,.14),transparent 48%),radial-gradient(circle at 70% 68%,rgba(59,130,246,.12),transparent 55%);pointer-events:none}.about-hero .container{position:relative;z-index:1}.about-hero__grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(32px,5vw,88px);align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:var(--space-8);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);letter-spacing:.08em;text-transform:uppercase;color:var(--color-funfinity-purple);background:#7c3aed14;border-radius:var(--radius-full);padding:6px 14px;margin-bottom:var(--space-16)}.about-hero__title{font-size:clamp(32px,3.8vw,54px);font-weight:700;line-height:1.18;margin-bottom:var(--space-24);color:#1f2a5c;text-shadow:0 4px 24px rgba(15,23,42,.12)}.about-hero__body{font-size:var(--font-size-xl);color:#1f2a5cd1;line-height:1.75;max-width:600px}.about-hero__visual{display:flex;justify-content:center}.about-hero__image-wrapper{position:relative;padding:clamp(18px,2vw,28px);border-radius:40px;background:linear-gradient(135deg,#fffffff2,#d2dcfff2);box-shadow:0 30px 60px #0f172a29;overflow:hidden}.about-hero__image-wrapper:after{content:"";position:absolute;inset:clamp(16px,2vw,24px);border-radius:30px;border:1px solid rgba(124,58,237,.18);pointer-events:none}.about-hero__image{display:block;width:min(520px,100%);height:auto;border-radius:28px;box-shadow:0 24px 48px #3b82f633}.about-footer{margin-top:auto;background:#ffffffeb}.footer__current{display:inline-block;font-weight:var(--font-weight-semibold);color:var(--color-text);padding:6px 0}@media (max-width: 1024px){.about-hero{padding:100px 0}}@media (max-width: 768px){.about-header__actions{gap:var(--space-12)}.about-hero__grid{grid-template-columns:1fr;text-align:center}.about-hero__body{margin:0 auto}.about-hero__visual{order:-1;margin-bottom:var(--space-32)}}@media (max-width: 480px){.about-header__container{flex-direction:column;gap:var(--space-16)}.about-header__actions{width:100%;justify-content:center;flex-wrap:wrap}.about-hero{padding:72px 0}.about-hero__title{font-size:clamp(28px,8vw,32px)}.about-hero__body{font-size:var(--font-size-lg);line-height:1.6}}