@font-face{font-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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-display:block;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;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.18.9"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{--font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--bg: #f6f7fb;--surface: #ffffff;--surface-2: #eef0f7;--surface-3: #e3e6f0;--border: #dde1ec;--text: #171a26;--muted: #5b6278;--brand: #3b4fd8;--brand-strong: #2b3cb8;--brand-soft: #e8ebff;--on-brand: #ffffff;--success: #117a4b;--success-soft: #e3f5ec;--warn: #9a5b00;--warn-soft: #fff3de;--danger: #c02c3a;--danger-soft: #fde8ea;--focus: #3b4fd8;--shadow-1: 0 1px 2px rgba(20, 24, 40, .06), 0 1px 3px rgba(20, 24, 40, .05);--shadow-2: 0 8px 28px rgba(20, 24, 40, .12);--backdrop: rgba(14, 16, 28, .5);--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 24px;--sp-6: 32px;--sp-7: 48px;--sp-8: 64px;--fs-xs: .8125rem;--fs-sm: .9375rem;--fs-md: 1.0625rem;--fs-lg: 1.25rem;--fs-xl: 1.5rem;--fs-2xl: 2rem;--fs-3xl: 2.75rem;--r-sm: 8px;--r-md: 12px;--r-lg: 14px;--r-pill: 999px;--tap: 44px;--shell: 1080px;--dur: .16s;color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0f1119;--surface: #171a26;--surface-2: #1f2332;--surface-3: #2a2f42;--border: #2c3145;--text: #eceef6;--muted: #a2a8bd;--brand: #8b9aff;--brand-strong: #a9b4ff;--brand-soft: #232a57;--on-brand: #0f1119;--success: #4fd394;--success-soft: #133326;--warn: #f5b454;--warn-soft: #3a2a10;--danger: #ff7d88;--danger-soft: #3d1a1f;--focus: #a9b4ff;--shadow-1: none;--shadow-2: 0 12px 32px rgba(0, 0, 0, .5);--backdrop: rgba(0, 0, 0, .65);color-scheme:dark}}:root[data-theme=dark]{--bg: #0f1119;--surface: #171a26;--surface-2: #1f2332;--surface-3: #2a2f42;--border: #2c3145;--text: #eceef6;--muted: #a2a8bd;--brand: #8b9aff;--brand-strong: #a9b4ff;--brand-soft: #232a57;--on-brand: #0f1119;--success: #4fd394;--success-soft: #133326;--warn: #f5b454;--warn-soft: #3a2a10;--danger: #ff7d88;--danger-soft: #3d1a1f;--focus: #a9b4ff;--shadow-1: none;--shadow-2: 0 12px 32px rgba(0, 0, 0, .5);--backdrop: rgba(0, 0, 0, .65);color-scheme:dark}:root[data-large-text]{font-size:118%}:root[data-reduced-motion] *,:root[data-reduced-motion] *:before{transition:none!important;animation:none!important}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition:none!important;animation:none!important}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:var(--fs-md);line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{line-height:1.2;margin:0;letter-spacing:-.01em}h1{font-size:var(--fs-2xl)}h2{font-size:var(--fs-xl)}h3{font-size:var(--fs-lg)}p{margin:0}a{color:var(--brand);text-underline-offset:3px}img,svg{max-width:100%}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:absolute;left:-9999px;top:var(--sp-2);background:var(--surface);padding:var(--sp-2) var(--sp-4);z-index:100}.skip-link:focus{left:var(--sp-2)}.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--sp-4)}main.shell{padding-top:var(--sp-6);padding-bottom:var(--sp-8);min-height:70vh}.stack{display:flex;flex-direction:column;gap:var(--sp-3)}.stack-lg{display:flex;flex-direction:column;gap:var(--sp-5)}.row{display:flex;gap:var(--sp-3);align-items:center;flex-wrap:wrap}.row.end{justify-content:flex-end}.row.center{justify-content:center}.row.between{justify-content:space-between}.grid{display:grid;gap:var(--sp-4)}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.dash{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}@media (max-width: 860px){.grid.cols-3,.grid.dash{grid-template-columns:1fr}}@media (max-width: 640px){.grid.cols-2{grid-template-columns:1fr}h1{font-size:var(--fs-xl)}}.muted{color:var(--muted)}.small{font-size:var(--fs-sm)}.xs{font-size:var(--fs-xs)}.center-text{text-align:center}.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:var(--sp-4);flex-wrap:wrap;margin-bottom:var(--sp-5)}.page-head p{margin-top:var(--sp-1)}.eyebrow{font-size:var(--fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.divider{height:1px;background:var(--border);border:0;margin:var(--sp-2) 0}.or-sep{display:flex;align-items:center;gap:var(--sp-3);color:var(--muted);font-size:var(--fs-xs)}.or-sep:before,.or-sep:after{content:"";flex:1;height:1px;background:var(--border)}.topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 92%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topbar-inner{display:flex;align-items:center;gap:var(--sp-4);min-height:64px}.brand{display:flex;align-items:center;gap:var(--sp-2);font-weight:800;font-size:var(--fs-lg);color:var(--text);text-decoration:none;letter-spacing:-.02em}.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--brand);color:var(--on-brand);display:grid;place-items:center;font-size:15px;font-weight:800}.nav{display:flex;gap:var(--sp-1);margin-left:var(--sp-4)}.nav a{color:var(--muted);text-decoration:none;padding:var(--sp-2) var(--sp-3);border-radius:var(--r-sm);font-weight:500;min-height:var(--tap);display:flex;align-items:center}.nav a:hover{color:var(--text);background:var(--surface-2)}.nav a.active{color:var(--brand);background:var(--brand-soft)}.topbar-right{margin-left:auto;display:flex;gap:var(--sp-2);align-items:center}.bottom-nav{display:none}@media (max-width: 860px){.nav{display:none}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:20;background:var(--surface);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.bottom-nav a{flex:1;text-align:center;padding:var(--sp-2) 0;min-height:56px;font-size:var(--fs-xs);color:var(--muted);text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.bottom-nav a.active{color:var(--brand);font-weight:600}.bottom-nav .ico{font-size:18px;line-height:1}body.has-bottom-nav main.shell{padding-bottom:96px}}button,.btn{font:inherit;font-weight:600;font-size:var(--fs-sm);min-height:var(--tap);padding:0 var(--sp-4);border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);text-decoration:none;transition:background var(--dur),border-color var(--dur),transform var(--dur)}button:hover:not(:disabled),.btn:hover:not(:disabled){background:var(--surface-2)}.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}.btn.primary:hover:not(:disabled){background:var(--brand-strong);border-color:var(--brand-strong)}.btn.ghost{background:transparent;border-color:transparent;color:var(--brand)}.btn.ghost:hover{background:var(--brand-soft)}.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn.sm{min-height:36px;padding:0 var(--sp-3);font-size:var(--fs-xs)}.btn.lg{min-height:52px;padding:0 var(--sp-5);font-size:var(--fs-md)}.btn.block{width:100%}button:disabled,.btn:disabled,.btn[aria-disabled=true]{background:var(--surface-2);border-color:var(--border);color:var(--muted);cursor:not-allowed}.icon-btn{min-width:var(--tap);padding:0;border-color:transparent;background:transparent;font-size:24px;line-height:1;color:var(--muted)}.link-btn{background:none;border:0;color:var(--brand);padding:0;min-height:0;font-weight:500;text-decoration:underline;text-underline-offset:3px}.link-btn:hover{background:none}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--sp-5);box-shadow:var(--shadow-1)}.card.tight{padding:var(--sp-4)}.card.interactive{transition:border-color var(--dur),transform var(--dur);text-decoration:none;color:inherit;display:block}.card.interactive:hover{border-color:var(--brand);transform:translateY(-1px)}.card.interactive.row{display:flex}.card.hero{background:linear-gradient(135deg,var(--brand) 0%,#6a4fd8 100%);color:#fff;border:0}:root[data-theme=dark] .card.hero{background:linear-gradient(135deg,#2b3cb8,#4b33a8)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .card.hero{background:linear-gradient(135deg,#2b3cb8,#4b33a8)}}.card.hero .muted{color:#ffffffd1}.card.hero .btn.primary{background:#fff;color:#2b3cb8;border-color:#fff}.card.hero .btn.ghost{color:#fff}.card-title{display:flex;justify-content:space-between;align-items:baseline;gap:var(--sp-3);margin-bottom:var(--sp-3)}.card-title h2,.card-title h3{font-size:var(--fs-md)}.state{text-align:center;display:flex;flex-direction:column;gap:var(--sp-3);align-items:center;padding:var(--sp-7) var(--sp-5)}.state-title{font-weight:700;font-size:var(--fs-lg)}.stack>.badge,.stack-lg>.badge{align-self:flex-start}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px var(--sp-2);border-radius:var(--r-pill);font-size:var(--fs-xs);font-weight:600;background:var(--surface-2);color:var(--muted);white-space:nowrap}.badge.brand{background:var(--brand-soft);color:var(--brand)}.badge.success{background:var(--success-soft);color:var(--success)}.badge.warn{background:var(--warn-soft);color:var(--warn)}.badge.danger{background:var(--danger-soft);color:var(--danger)}.countdown{text-decoration:none;font-weight:800;font-size:var(--fs-lg);padding:var(--sp-1) var(--sp-3);border-radius:var(--r-md);background:var(--brand-soft);color:var(--brand)}.meter{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--sp-1) var(--sp-3);align-items:center}.meter-track{grid-column:1 / -1;height:8px;background:var(--surface-3);border-radius:var(--r-pill);overflow:hidden}.meter-fill{height:100%;border-radius:var(--r-pill);background:var(--brand);transition:width .4s ease}.meter-fill.weak{background:var(--danger)}.meter-fill.medium{background:var(--warn)}.meter-fill.strong{background:var(--success)}.meter-label{font-size:var(--fs-sm);font-weight:500}.meter-value{font-size:var(--fs-sm);font-weight:700;font-variant-numeric:tabular-nums}label{font-weight:600;font-size:var(--fs-sm)}.field{display:flex;flex-direction:column;gap:var(--sp-1)}.field .hint{font-size:var(--fs-xs);color:var(--muted);font-weight:400}input[type=text],input[type=email],input[type=password],input[type=time],select,textarea,.input{font:inherit;font-size:var(--fs-md);min-height:var(--tap);padding:var(--sp-2) var(--sp-3);border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);color:var(--text);width:100%}input:focus,select:focus,textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px var(--brand-soft)}input[aria-invalid=true]{border-color:var(--danger)}.form-error{color:var(--danger);font-size:var(--fs-sm);font-weight:500}.form-error:before{content:"⚠ "}.form-ok{color:var(--success);font-size:var(--fs-sm);font-weight:500}.form-ok:before{content:"✓ "}.check{display:flex;gap:var(--sp-2);align-items:flex-start;font-weight:400;font-size:var(--fs-sm);cursor:pointer}.check input{width:20px;height:20px;margin-top:2px;flex:none;accent-color:var(--brand)}.pw-wrap{position:relative}.pw-wrap input{padding-right:96px}.pw-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);min-height:36px;font-size:var(--fs-xs);border:0;background:transparent;color:var(--brand)}.strength{height:4px;border-radius:2px;background:var(--surface-3);overflow:hidden}.strength span{display:block;height:100%;transition:width var(--dur)}.segmented{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:var(--sp-2)}.segmented.wrap{grid-auto-flow:row;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}.choice{position:relative}.choice input{position:absolute;opacity:0;top:0;right:0;bottom:0;left:0;cursor:pointer}.choice span{display:flex;flex-direction:column;justify-content:center;min-height:56px;padding:var(--sp-3) var(--sp-4);border:1.5px solid var(--border);border-radius:var(--r-md);background:var(--surface);font-weight:600;transition:border-color var(--dur),background var(--dur)}.choice span small{font-weight:400;color:var(--muted);font-size:var(--fs-xs)}.choice input:checked+span{border-color:var(--brand);background:var(--brand-soft)}.choice input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}.switch{display:flex;justify-content:space-between;align-items:center;gap:var(--sp-4);min-height:var(--tap)}.switch input{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:46px;height:28px;border-radius:14px;background:var(--surface-3);position:relative;cursor:pointer;flex:none;transition:background var(--dur)}.switch input:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:var(--shadow-1);transition:transform var(--dur)}.switch input:checked{background:var(--brand)}.switch input:checked:after{transform:translate(18px)}.q-head{display:flex;justify-content:space-between;gap:var(--sp-3);align-items:center;flex-wrap:wrap}.q-progress{height:6px;background:var(--surface-3);border-radius:var(--r-pill);overflow:hidden}.q-progress span{display:block;height:100%;background:var(--brand);transition:width .3s ease}.q-stem{font-size:var(--fs-lg);line-height:1.6}.q-context{background:var(--surface-2);border-radius:var(--r-md);padding:var(--sp-4);line-height:1.65}.stars{color:var(--warn);letter-spacing:1px}.options{display:flex;flex-direction:column;gap:var(--sp-2);margin:0;padding:0;border:0}.option{display:flex;align-items:center;gap:var(--sp-3);min-height:56px;padding:var(--sp-3) var(--sp-4);border:1.5px solid var(--border);border-radius:var(--r-md);background:var(--surface);cursor:pointer;transition:border-color var(--dur),background var(--dur);font-weight:400;font-size:var(--fs-md)}.option:hover{border-color:var(--brand)}.option input{width:20px;height:20px;accent-color:var(--brand);flex:none}.option .letter{font-weight:700;color:var(--muted);width:1.5em;flex:none}.option.selected{border-color:var(--brand);background:var(--brand-soft)}.option.is-correct{border-color:var(--success);background:var(--success-soft)}.option.is-wrong{border-color:var(--danger);background:var(--danger-soft)}.option .verdict{margin-left:auto;font-weight:700;font-size:var(--fs-sm);white-space:nowrap}.option.is-correct .verdict{color:var(--success)}.option.is-wrong .verdict{color:var(--danger)}.option[aria-disabled=true]{cursor:default}.numeric-input{max-width:280px;font-size:var(--fs-lg)!important;font-variant-numeric:tabular-nums}.feedback{border-radius:var(--r-lg);padding:var(--sp-5);border:1.5px solid;display:flex;flex-direction:column;gap:var(--sp-4)}.feedback.ok{border-color:var(--success);background:var(--success-soft)}.feedback.ko{border-color:var(--danger);background:var(--danger-soft)}.feedback.skip{border-color:var(--border);background:var(--surface-2)}.feedback-title{font-weight:800;font-size:var(--fs-lg);display:flex;gap:var(--sp-2);align-items:center}.feedback-body{background:var(--surface);border-radius:var(--r-md);padding:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-3)}.steps{margin:0;padding-left:1.3em;display:flex;flex-direction:column;gap:var(--sp-2)}.retenir{border-left:4px solid var(--brand);background:var(--brand-soft);padding:var(--sp-3) var(--sp-4);border-radius:0 var(--r-md) var(--r-md) 0}.retenir strong{display:block;font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--brand);margin-bottom:2px}.ai-box{border:1px dashed var(--brand);border-radius:var(--r-md);padding:var(--sp-4);background:var(--surface)}.ai-box .badge{margin-bottom:var(--sp-2)}.mastery-delta{font-size:var(--fs-sm);color:var(--muted)}.katex{font-size:1.05em}.katex-display{overflow-x:auto;overflow-y:hidden}.exam-bar{position:sticky;top:0;z-index:25;background:var(--surface);border-bottom:1px solid var(--border)}.exam-bar-inner{display:flex;align-items:center;gap:var(--sp-4);min-height:60px;flex-wrap:wrap}.timer{font-variant-numeric:tabular-nums;font-weight:700;padding:var(--sp-1) var(--sp-3);border-radius:var(--r-sm);background:var(--surface-2)}.timer.low{background:var(--warn-soft);color:var(--warn)}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:var(--sp-5);align-items:start}.exam-nav{position:sticky;top:84px}.exam-nav-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--sp-1)}.exam-nav-grid a{min-height:36px;display:grid;place-items:center;border-radius:var(--r-sm);border:1px solid var(--border);text-decoration:none;color:var(--text);font-size:var(--fs-xs);font-weight:600}.exam-nav-grid a.done{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}@media (max-width: 860px){.exam-layout{grid-template-columns:1fr}.exam-nav{position:static;order:-1}}.exam-q{scroll-margin-top:84px}.score-big{font-size:var(--fs-3xl);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.list>li{display:flex;gap:var(--sp-3);align-items:center;justify-content:space-between;padding:var(--sp-3) 0;border-bottom:1px solid var(--border)}.list>li:last-child{border-bottom:0}.tabs{display:flex;gap:var(--sp-1);border-bottom:1px solid var(--border);margin-bottom:var(--sp-5);overflow-x:auto}.tabs button,.tabs a{border:0;border-radius:0;background:transparent;border-bottom:2px solid transparent;color:var(--muted);padding:0 var(--sp-3);white-space:nowrap;text-decoration:none;display:inline-flex;align-items:center;min-height:var(--tap);font-weight:600;font-size:var(--fs-sm)}.tabs button[aria-selected=true],.tabs a.active{color:var(--brand);border-bottom-color:var(--brand)}.week{display:grid;grid-template-columns:repeat(7,1fr);gap:var(--sp-2);align-items:end;height:96px}.week-bar{display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end}.week-bar span.bar{width:100%;max-width:28px;background:var(--brand);border-radius:6px 6px 2px 2px;min-height:3px}.week-bar span.bar.empty{background:var(--surface-3)}.week-bar small{font-size:var(--fs-xs);color:var(--muted)}.plan-day{display:grid;grid-template-columns:88px minmax(0,1fr) auto;gap:var(--sp-3);align-items:center;padding:var(--sp-3) 0;border-bottom:1px solid var(--border)}.plan-day:last-child{border-bottom:0}.plan-day.today{background:var(--brand-soft);margin:0 calc(-1 * var(--sp-3));padding-left:var(--sp-3);padding-right:var(--sp-3);border-radius:var(--r-md)}@media (max-width: 640px){.plan-day{grid-template-columns:64px minmax(0,1fr)}.plan-day>:last-child{grid-column:2}}.skill-tree details{border-bottom:1px solid var(--border);padding:var(--sp-3) 0}.skill-tree summary{cursor:pointer;list-style:none}.skill-tree summary::-webkit-details-marker{display:none}.skill-tree .children{padding:var(--sp-3) 0 0 var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-3)}.kpi{display:flex;flex-direction:column;gap:2px}.kpi-value{font-size:var(--fs-xl);font-weight:800;font-variant-numeric:tabular-nums}.kpi-label{font-size:var(--fs-xs);color:var(--muted)}.locked-overlay{position:relative}.locked-overlay>.blur{filter:blur(5px);pointer-events:none;-webkit-user-select:none;user-select:none}.locked-overlay>.lock{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center}.notice{display:flex;gap:var(--sp-3);align-items:flex-start;padding:var(--sp-3) var(--sp-4);border-radius:var(--r-md);background:var(--warn-soft);color:var(--text);font-size:var(--fs-sm)}.notice.info{background:var(--brand-soft)}.skeleton{height:14px;border-radius:7px;background:linear-gradient(90deg,var(--surface-2),var(--surface-3),var(--surface-2));background-size:200% 100%;animation:shimmer 1.2s infinite}.skeleton-title{height:32px;width:40%;border-radius:8px;background:var(--surface-2)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.toast{position:fixed;bottom:var(--sp-5);left:50%;transform:translate(-50%);background:var(--text);color:var(--bg);padding:var(--sp-3) var(--sp-5);border-radius:var(--r-md);z-index:60;box-shadow:var(--shadow-2);font-size:var(--fs-sm)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--backdrop);z-index:50;display:grid;place-items:center;padding:var(--sp-4);overflow-y:auto}.modal{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow-2);width:100%;max-height:calc(100vh - 32px);overflow-y:auto}.modal-sm{max-width:440px}.modal-md{max-width:520px}.modal-lg{max-width:760px}.modal-head{display:flex;justify-content:space-between;align-items:center;padding:var(--sp-4) var(--sp-4) 0 var(--sp-5);gap:var(--sp-3);min-height:56px}.modal-head h2{font-size:var(--fs-lg)}.modal-body{padding:var(--sp-3) var(--sp-5) var(--sp-5)}.menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow-2);min-width:240px;padding:var(--sp-2);z-index:40}.menu a,.menu button{display:flex;width:100%;justify-content:flex-start;border:0;background:transparent;padding:0 var(--sp-3);border-radius:var(--r-sm);color:var(--text);text-decoration:none;font-weight:500;min-height:40px;align-items:center}.menu a:hover,.menu button:hover{background:var(--surface-2)}.menu-head{padding:var(--sp-2) var(--sp-3) var(--sp-3);border-bottom:1px solid var(--border);margin-bottom:var(--sp-2)}.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-weight:800;display:grid;place-items:center;border:0;padding:0;min-height:0}.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:var(--sp-4)}.plan-card{display:flex;flex-direction:column;gap:var(--sp-3)}.plan-card.featured{border:2px solid var(--brand)}.price{font-size:var(--fs-2xl);font-weight:800;letter-spacing:-.02em}.price small{font-size:var(--fs-sm);font-weight:500;color:var(--muted)}.checks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--sp-2);font-size:var(--fs-sm)}.checks li:before{content:"✓";color:var(--success);font-weight:800;margin-right:var(--sp-2)}.checks li.no:before{content:"–";color:var(--muted)}.compare{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4)}@media (max-width: 560px){.compare{grid-template-columns:1fr}}.landing-hero{padding:var(--sp-8) 0 var(--sp-7)}.landing-hero h1{font-size:clamp(2rem,5vw,3.25rem);letter-spacing:-.03em;max-width:16ch}.landing-hero .lead{font-size:var(--fs-lg);color:var(--muted);max-width:52ch;margin-top:var(--sp-4)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:var(--sp-7);align-items:center}@media (max-width: 860px){.hero-grid{grid-template-columns:1fr;gap:var(--sp-5)}.landing-hero{padding-top:var(--sp-6)}}.section{padding:var(--sp-7) 0}.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section h2{font-size:var(--fs-2xl);margin-bottom:var(--sp-2);letter-spacing:-.02em}.section .sub{color:var(--muted);max-width:60ch;margin-bottom:var(--sp-5)}.step-num{width:36px;height:36px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-weight:800;display:grid;place-items:center}.faq details{border-bottom:1px solid var(--border);padding:var(--sp-4) 0}.faq summary{cursor:pointer;font-weight:600;min-height:var(--tap);display:flex;align-items:center}.faq details p{margin-top:var(--sp-2);color:var(--muted)}.footer{border-top:1px solid var(--border);padding:var(--sp-6) 0;color:var(--muted);font-size:var(--fs-sm);margin-top:var(--sp-7)}.footer a{color:var(--muted)}.prose{max-width:70ch;display:flex;flex-direction:column;gap:var(--sp-3)}.prose h2{font-size:var(--fs-lg);margin-top:var(--sp-4)}.wizard{max-width:620px;margin:0 auto}.wizard-dots{display:flex;gap:var(--sp-2)}.wizard-dots span{flex:1;height:4px;border-radius:2px;background:var(--surface-3)}.wizard-dots span.on{background:var(--brand)}
