@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Merriweather:ital,wght@0,300;0,400;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap";@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:"0.16.47"}.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>.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 .smash{display:inline;line-height:0}.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;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 .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}:root{--bg: #fafaf9;--surface: #ffffff;--surface-elevated: #ffffff;--text: #0f172a;--text-muted: #64748b;--primary: #4f46e5;--primary-soft: rgba(79, 70, 229, .1);--primary-glow: rgba(79, 70, 229, .25);--accent: #10b981;--accent-soft: rgba(16, 185, 129, .1);--danger: #ef4444;--danger-soft: rgba(239, 68, 68, .1);--border: #e2e8f0;--radius-sm: 8px;--radius: 16px;--radius-lg: 24px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .05), 0 8px 10px -6px rgba(0, 0, 0, .05)}:root[data-theme=dark]{--bg: #0f172a;--surface: #1e293b;--surface-elevated: #334155;--text: #f8fafc;--text-muted: #94a3b8;--primary: #818cf8;--primary-soft: rgba(129, 140, 248, .15);--primary-glow: rgba(129, 140, 248, .3);--accent: #34d399;--accent-soft: rgba(52, 211, 153, .15);--danger: #f87171;--danger-soft: rgba(248, 113, 113, .15);--border: #334155;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .4)}*,*:before,*:after{box-sizing:border-box}html,body,#ponimator-root{height:100%;margin:0;padding:0;display:flex;flex-direction:column}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--text);background:var(--bg);background-image:radial-gradient(circle at 10% 20%,rgba(79,70,229,.05),transparent 40%),radial-gradient(circle at 90% 80%,rgba(16,185,129,.05),transparent 40%);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}button,textarea,input,select{font-family:inherit;font-size:inherit}button{border:none;background:none;cursor:pointer}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:min(440px,100%);padding:32px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-lg);text-align:center}.auth-brand{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:24px}.brand-logo{width:48px;height:48px;border-radius:12px;object-fit:contain;background:var(--surface-elevated);border:1px solid var(--border);padding:8px}.eyebrow{color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.auth-card h1{margin:8px 0 12px;font-size:28px;font-weight:700;letter-spacing:-.02em}.auth-card p{margin:0 0 24px;color:var(--text-muted);font-size:15px}.auth-card input{width:100%;margin-bottom:16px;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--text);transition:all .2s}.auth-card input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.auth-card button{width:100%;min-height:44px;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-weight:600;transition:all .2s}.auth-card button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.auth-card button:disabled{opacity:.5;cursor:not-allowed}.auth-card .auth-switch{background:transparent;color:var(--text-muted);font-weight:500;margin-top:16px}.auth-card .auth-switch:hover{color:var(--primary)}.auth-notice,.error{margin-top:16px;padding:12px;border-radius:var(--radius-sm);font-size:14px;text-align:left}.auth-notice{background:var(--accent-soft);color:var(--accent);border:1px solid rgba(16,185,129,.2)}.error{background:var(--danger-soft);color:var(--danger);border:1px solid rgba(239,68,68,.2)}.ponimator-shell{display:flex;flex-direction:column;height:100vh;overflow:hidden}.ponimator-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px;border-bottom:1px solid var(--border);background:#fffc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:50}:root[data-theme=dark] .ponimator-header{background:#0f172acc}.header-brand{display:flex;align-items:center;gap:12px}.header-brand h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.02em}.header-actions{display:flex;align-items:center;gap:12px}.top-material-actions{display:flex;gap:8px}.top-material-actions button,.logout-button{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:13px;font-weight:600;transition:all .2s}.top-material-actions button:hover,.logout-button:hover{border-color:var(--primary);color:var(--primary)}.top-material-actions button:first-child{background:var(--primary);color:#fff;border-color:var(--primary)}.top-material-actions button:first-child:hover{background:#4338ca;color:#fff}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--surface);border:1px solid var(--border);color:var(--text-muted);transition:all .3s}.theme-toggle:hover{background:var(--primary-soft);color:var(--primary);transform:rotate(15deg)}.theme-toggle svg{width:18px;height:18px}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-moon{display:none}:root[data-theme=dark] .theme-toggle .icon-sun{display:block}.workspace{display:grid;grid-template-columns:360px 1fr;gap:0;flex:1;overflow:hidden}.material-picker-list{display:flex;flex-direction:column;gap:12px;min-height:0;max-height:100%;overflow-y:auto;overscroll-behavior:contain;padding:20px 28px;scrollbar-gutter:stable}.material-picker-list::-webkit-scrollbar{width:6px}.material-picker-list::-webkit-scrollbar-track{background:transparent}.material-picker-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.material-picker-list::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.material-picker-item{border:1px solid var(--border);border-radius:16px;background:var(--surface);overflow:hidden;transition:all .2s ease}.material-picker-main:hover{background:var(--surface-hover)}.material-picker-main strong{display:block;font-size:15px;font-weight:600;margin-bottom:4px;color:var(--text)}.material-picker-main small{display:block;color:var(--text-muted);font-size:13px;line-height:1.4}.material-delete-button{padding:0 20px;background:transparent;border:none;border-left:1px solid var(--border);color:var(--danger);font-weight:600;font-size:13px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.material-variant-button{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text);text-align:left;cursor:pointer;transition:all .2s}.material-variant-button:hover:not(:disabled){border-color:var(--primary);background:var(--primary-soft)}.material-variant-button:disabled{opacity:.6;cursor:not-allowed}.material-variant-button span{font-weight:600;font-size:14px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.material-variant-button small{color:var(--text-muted);font-size:12px;font-weight:500;white-space:nowrap;flex-shrink:0}.material-panel{border-right:1px solid var(--border);background:var(--surface);display:flex;flex-direction:column;overflow-y:auto;padding:24px;gap:24px}.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.section-title{color:var(--text-muted);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}.upload-summary{font-size:14px;color:var(--text);margin-bottom:8px}.material-info{margin-top:12px;padding:12px;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border);font-size:13px}.info-row{display:flex;justify-content:space-between;margin-bottom:6px}.info-row:last-child{margin-bottom:0}.info-label{color:var(--text-muted)}.scenario-axis-list{display:flex;flex-direction:column;gap:8px;margin-top:12px}.scenario-axis-step{display:flex;align-items:center;gap:12px;width:100%;padding:10px 12px;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);font-size:13px;text-align:left;transition:all .2s;border:1px solid transparent}.scenario-axis-step:hover:not(:disabled){background:var(--surface);color:var(--text)}.scenario-axis-marker{width:20px;height:20px;border-radius:50%;background:var(--surface-elevated);border:2px solid var(--border);display:grid;place-items:center;font-size:11px;font-weight:700;flex-shrink:0}.scenario-axis-current strong{display:block;margin-bottom:4px;color:var(--text)}.scenario-axis-current span,.scenario-axis-current em{color:var(--text-muted);font-style:normal;display:block}.chat-panel{display:flex;flex-direction:column;background:var(--bg);height:100%;min-height:0}.chat-top{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;background:var(--surface)}.chat-top p{margin:4px 0 0;color:var(--text-muted);font-size:14px}.chat-badges{display:flex;gap:8px;align-items:center}.learning-style-select{padding:6px 32px 6px 12px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2364748b'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}.badge{padding:6px 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--primary-soft);color:var(--primary)}.messages{flex:1;min-height:0;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.message{max-width:85%;padding:16px 20px;border-radius:var(--radius);line-height:1.6;font-size:15px}.message.user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}.message.assistant{align-self:flex-start;background:var(--surface);border:1px solid var(--border);color:var(--text);border-bottom-left-radius:4px}.message.system{align-self:center;max-width:90%;background:var(--accent-soft);color:var(--accent);font-size:13px;text-align:center;padding:10px 16px;border-radius:999px}.message-body{font-family:Merriweather,serif;font-size:14px;line-height:1.6}.message-body p{margin:0 0 12px}.message-body p:last-child{margin-bottom:0}.message-body h2,.message-body h3{font-family:Inter,sans-serif;margin:20px 0 12px;font-size:18px;font-weight:700;color:var(--text)}.message-body ul,.message-body ol{margin:0 0 12px;padding-left:20px}.message-body li{margin-bottom:6px}.message-body code{font-family:JetBrains Mono,monospace;background:var(--bg);padding:2px 6px;border-radius:4px;font-size:.9em;color:var(--primary)}.message-body pre{background:var(--bg);padding:16px;border-radius:var(--radius-sm);overflow-x:auto;border:1px solid var(--border)}.message-body pre code{background:transparent;padding:0;color:var(--text)}.message-body blockquote{border-left:3px solid var(--primary);margin:12px 0;padding-left:16px;color:var(--text-muted);font-style:italic}.composer{padding:20px 24px;border-top:1px solid var(--border);background:var(--surface);display:flex;flex-direction:column;gap:12px}.composer textarea{width:100%;min-height:56px;max-height:160px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text);resize:none;transition:all .2s}.composer textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.composer-actions{display:flex;justify-content:space-between;align-items:center}.composer button{padding:10px 20px;border-radius:999px;background:var(--primary);color:#fff;font-weight:600;font-size:14px;transition:all .2s}.composer button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.composer button:disabled{opacity:.5;cursor:not-allowed}.voice-input-button{width:44px!important;height:44px!important;padding:0!important;background:var(--surface-elevated)!important;color:var(--text-muted)!important;border:1px solid var(--border)!important;display:grid;place-items:center}.voice-input-button.active{background:var(--danger-soft)!important;color:var(--danger)!important;border-color:var(--danger)!important;animation:pulse 1.5s infinite}@keyframes pulse{0%{box-shadow:0 0 #ef444466}70%{box-shadow:0 0 0 10px #ef444400}to{box-shadow:0 0 #ef444400}}.voice-status{font-size:12px;color:var(--text-muted);text-align:center}@media(max-width:900px){.workspace{grid-template-columns:1fr;grid-template-rows:auto 1fr}.material-panel{border-right:none;border-bottom:1px solid var(--border);max-height:40vh}.ponimator-header{flex-direction:column;align-items:stretch;gap:12px}.header-actions{justify-content:space-between}.top-material-actions{flex-wrap:wrap}.top-material-actions button{flex:1;min-width:120px;text-align:center}}@media(max-width:600px){.message{max-width:95%}}.section-picker-backdrop,.confirm-backdrop{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:24px;background:#0f172a99;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.section-picker,.confirm-modal{width:min(800px,100%);max-height:min(85vh,800px);background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:0 25px 50px -12px #00000040;display:flex;flex-direction:column;overflow:hidden;animation:slideUp .3s cubic-bezier(.16,1,.3,1)}@keyframes slideUp{0%{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.section-picker-header{padding:24px 28px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:flex-start;gap:16px;background:var(--surface)}.section-picker-header h2{margin:8px 0 4px;font-size:22px;font-weight:700;color:var(--text);letter-spacing:-.02em}.section-picker-header p{margin:0;color:var(--text-muted);font-size:14px;line-height:1.5}.section-picker-close{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--bg);border:1px solid var(--border);color:var(--text-muted);font-size:20px;line-height:1;transition:all .2s;flex-shrink:0}.section-picker-close:hover{background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}.section-picker-tools{padding:16px 28px;border-bottom:1px solid var(--border);display:flex;gap:12px;align-items:center;background:var(--surface)}.section-picker-tools input{flex:1;min-width:0;padding:10px 16px;border:1px solid var(--border);border-radius:999px;background:var(--bg);color:var(--text);font-size:14px;transition:all .2s}.section-picker-tools input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.section-picker-actions{display:flex;gap:8px}.section-picker-actions button{padding:10px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:13px;font-weight:600;transition:all .2s}.section-picker-actions button:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}.section-picker-list{flex:1;overflow-y:auto;padding:20px 28px;display:flex;flex-direction:column;gap:10px}.section-picker-item,.material-variant-button{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text);text-align:left;transition:all .2s;cursor:pointer}.section-picker-item:hover,.material-variant-button:hover:not(:disabled){border-color:var(--primary);background:var(--primary-soft)}.section-picker-item.selected,.material-variant-button.selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 1px var(--primary)}.section-picker-check{width:22px;height:22px;border-radius:6px;border:2px solid var(--border);display:grid;place-items:center;font-size:14px;color:transparent;flex-shrink:0;transition:all .2s}.section-picker-item.selected .section-picker-check{background:var(--primary);border-color:var(--primary);color:#fff}.section-picker-title{flex:1;font-weight:600;font-size:15px;line-height:1.4}.section-picker-item small{color:var(--text-muted);font-size:12px;white-space:nowrap}.section-picker-footer{padding:20px 28px;border-top:1px solid var(--border);background:var(--bg);display:flex;justify-content:space-between;align-items:center;gap:16px}.section-picker-footer div{display:flex;flex-direction:column;gap:4px}.section-picker-footer strong{font-size:15px;color:var(--text)}.section-picker-footer span{font-size:13px;color:var(--text-muted)}.apply-button{padding:10px 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:600;font-size:14px;border:none;transition:all .2s;min-width:160px}.apply-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.apply-button:disabled{opacity:.5;cursor:not-allowed}.material-picker{width:min(700px,100%)}.material-picker-item{border:1px solid var(--border);border-radius:16px;background:var(--surface);overflow:hidden;transition:all .2s}.material-picker-item.active{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}.material-picker-item-header{display:flex;align-items:stretch}.material-picker-main{flex:1;display:flex;align-items:center;gap:12px;padding:16px;background:transparent;border:none;color:var(--text);text-align:left;cursor:pointer;transition:background .2s}.material-picker-main:hover{background:var(--bg)}.material-picker-main strong{display:block;font-size:15px;margin-bottom:4px}.material-picker-main small{display:block;color:var(--text-muted);font-size:13px}.material-delete-button{padding:0 20px;background:transparent;border:none;border-left:1px solid var(--border);color:var(--danger);font-weight:600;font-size:13px;cursor:pointer;transition:all .2s}.material-delete-button:hover{background:var(--danger-soft)}.material-picker-variants{padding:16px;display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--border);margin-top:0}.upload-modal{width:min(600px,100%)}.upload-modal-body{padding:24px 28px;overflow-y:auto}.upload-drop-zone{border:2px dashed var(--border);border-radius:16px;padding:32px;text-align:center;background:var(--bg);transition:all .2s}.upload-drop-zone.drag-active{border-color:var(--primary);background:var(--primary-soft)}.upload-drop-zone textarea{width:100%;min-height:120px;padding:12px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);margin-bottom:16px;resize:vertical}.upload-drop-zone textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.upload-drop-hint{color:var(--text-muted);font-size:14px;margin-bottom:20px}.upload-row{display:flex;gap:12px;justify-content:center;margin-top:16px}.file-button{position:relative;padding:10px 20px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;cursor:pointer;transition:all .2s;overflow:hidden}.file-button:hover{border-color:var(--primary);color:var(--primary)}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer}.file-note{margin-top:16px;padding:8px 12px;background:var(--primary-soft);color:var(--primary);border-radius:8px;font-size:13px;font-weight:500;text-align:center}.confirm-modal{width:min(440px,100%);max-height:none;padding:28px;text-align:center}.confirm-modal h2{margin:16px 0 8px;font-size:20px}.confirm-modal p{color:var(--text-muted);font-size:14px;line-height:1.5;margin-bottom:24px}.confirm-actions{display:flex;gap:12px;justify-content:center}.confirm-secondary{padding:10px 20px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;transition:all .2s}.confirm-secondary:hover{background:var(--bg);border-color:var(--text-muted)}.confirm-danger{padding:10px 20px;border-radius:999px;border:1px solid var(--danger);background:var(--danger);color:#fff;font-weight:600;transition:all .2s}.confirm-danger:hover{background:#dc2626;box-shadow:0 4px 12px #ef44444d}.lens-picker{width:min(600px,100%)}.lens-list{display:flex;flex-direction:column;gap:12px}.lens-card{padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--bg);text-align:left;transition:all .2s;cursor:pointer}.lens-card:hover{border-color:var(--primary);background:var(--primary-soft)}.lens-card.recommended{border-color:var(--accent);background:var(--accent-soft)}.lens-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.lens-card-header strong{font-size:15px;color:var(--text)}.lens-badge{padding:4px 10px;border-radius:999px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;text-transform:uppercase}.lens-card-desc{margin:0;font-size:14px;color:var(--text-muted);line-height:1.5}.lens-custom-section{padding:20px 28px;border-top:1px solid var(--border)}.lens-custom-toggle{width:100%;padding:12px;border:1px dashed var(--border);border-radius:12px;background:transparent;color:var(--text-muted);font-weight:600;cursor:pointer;transition:all .2s}.lens-custom-toggle:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}.lens-custom-form{margin-top:16px;display:flex;flex-direction:column;gap:12px}.lens-custom-form textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text);resize:vertical;min-height:80px}.lens-custom-form textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.empty{padding:32px;text-align:center;color:var(--text-muted);font-size:14px;background:var(--bg);border:1px dashed var(--border);border-radius:12px}@media(max-width:720px){.section-picker-backdrop,.confirm-backdrop{padding:0;align-items:flex-end}.section-picker,.confirm-modal{width:100%;max-height:90vh;border-radius:24px 24px 0 0;border-bottom:none}.section-picker-header,.section-picker-tools,.section-picker-footer,.upload-modal-body,.lens-custom-section,.section-picker-list{padding-left:20px;padding-right:20px}.section-picker-tools{flex-direction:column;align-items:stretch}.section-picker-actions{justify-content:stretch}.section-picker-actions button{flex:1}.section-picker-footer{flex-direction:column;align-items:stretch;text-align:center}.apply-button{width:100%}.upload-row{flex-direction:column}.file-button,.upload-row button{width:100%}}.active-chat-note{margin-top:8px;padding:8px 12px;background:var(--primary-soft);color:var(--primary);border:1px solid rgba(79,70,229,.15);border-radius:var(--radius-sm);font-size:13px;font-weight:600;line-height:1.4}.status{margin-top:12px;font-size:13px;color:var(--text-muted);line-height:1.4}.progress-panel{margin-top:16px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg)}.progress-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.05em}.progress-meta strong{color:var(--primary);font-weight:700}.progress-track{height:6px;background:var(--border);border-radius:999px;overflow:hidden}.progress-fill{height:100%;background:var(--primary);border-radius:999px;transition:width .3s ease}.scenario-axis-progress{color:var(--text-muted);font-size:12px;font-weight:600;margin-bottom:8px}.lens-loading-overlay{position:absolute;inset:0;z-index:10;display:grid;place-items:center;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:24px}:root[data-theme=light] .lens-loading-overlay{background:#fff9}.lens-loading-box{padding:20px 32px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);color:var(--text);font-weight:600;font-size:15px}.empty{padding:24px;text-align:center;color:var(--text-muted);font-size:14px;background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius-sm)}.empty.compact{padding:12px;font-size:12px;border:none;background:transparent}.badge-step{background:var(--primary-soft);color:var(--primary);padding:6px 12px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap;max-width:260px;overflow:hidden;text-overflow:ellipsis}.message-body table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}.scenario-axis-card{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.scenario-axis-progress{color:var(--text-muted);font-size:12px;font-weight:600;margin-bottom:8px;letter-spacing:.02em}.scenario-axis-list{display:flex;flex-direction:column;gap:6px;max-height:280px;overflow-y:auto;padding-right:4px}.scenario-axis-list::-webkit-scrollbar{width:4px}.scenario-axis-list::-webkit-scrollbar-track{background:transparent}.scenario-axis-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.scenario-axis-step{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);font-size:13px;text-align:left;transition:all .2s;border:1px solid transparent;cursor:pointer}.scenario-axis-step:hover:not(:disabled){background:var(--surface-hover);color:var(--text)}.scenario-axis-step:disabled{cursor:not-allowed;opacity:.6}.scenario-axis-step.current{background:var(--primary-soft);color:var(--primary);border-color:#4f46e533;font-weight:600}.scenario-axis-step.status-mastered{color:var(--accent)}.scenario-axis-step.status-needs_practice{color:var(--warning)}.scenario-axis-marker{width:20px;height:20px;border-radius:50%;background:var(--surface);border:2px solid var(--border);display:grid;place-items:center;font-size:11px;font-weight:700;flex-shrink:0;transition:all .2s}.scenario-axis-step.current .scenario-axis-marker{border-color:var(--primary);background:var(--primary);color:#fff}.scenario-axis-step.status-mastered .scenario-axis-marker{border-color:var(--accent);background:var(--accent);color:#fff}.scenario-axis-title{min-width:0;overflow-wrap:anywhere;line-height:1.3}.scenario-axis-current{margin-top:12px;padding:12px;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border);font-size:13px}.scenario-axis-current strong{display:block;margin-bottom:4px;color:var(--text);font-weight:600}.scenario-axis-current span,.scenario-axis-current em{color:var(--text-muted);font-style:normal;display:block;line-height:1.4}.message-body .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:8px 0;margin:12px 0}.message-body .katex{font-size:1.4em}.latex-fallback{display:inline-flex;align-items:center;max-width:100%;padding:3px 8px;border:1px solid var(--danger);border-radius:6px;background:var(--danger-soft);color:var(--danger);font-size:.86em;line-height:1.35;font-family:JetBrains Mono,monospace}div.latex-fallback{display:flex;width:fit-content;margin:12px auto}.tikz-diagram-fallback{display:grid;gap:8px;margin:14px 0;max-width:100%}.tikz-diagram-item,.tikz-diagram-note{padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-size:14px;line-height:1.4;text-align:center;font-weight:500}.tikz-diagram-note{color:var(--text-muted);font-style:italic;background:var(--bg)}.tikz-diagram-blue{background:#3b82f61f;border-color:#3b82f64d;color:#1e40af}.tikz-diagram-green{background:#10b9811f;border-color:#10b9814d;color:#065f46}.tikz-diagram-yellow{background:#eab30826;border-color:#eab3084d;color:#854d0e}.tikz-diagram-orange{background:#f973161f;border-color:#f973164d;color:#9a3412}.tikz-diagram-red{background:#ef44441f;border-color:#ef44444d;color:#991b1b}.tikz-diagram-purple{background:#a855f71f;border-color:#a855f74d;color:#6b21a8}:root[data-theme=dark] .tikz-diagram-blue{color:#93c5fd}:root[data-theme=dark] .tikz-diagram-green{color:#6ee7b7}:root[data-theme=dark] .tikz-diagram-yellow{color:#fde047}:root[data-theme=dark] .tikz-diagram-orange{color:#fdba74}:root[data-theme=dark] .tikz-diagram-red{color:#fca5a5}:root[data-theme=dark] .tikz-diagram-purple{color:#d8b4fe}.message-body code{font-family:JetBrains Mono,monospace;background:var(--bg);padding:2px 6px;border-radius:4px;font-size:.9em;color:var(--primary);overflow-wrap:anywhere;word-break:break-word}.message-body pre{background:var(--bg);padding:14px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);overflow-x:auto;margin:12px 0;max-width:100%}.message-body pre code{background:transparent;padding:0;color:var(--text);overflow-wrap:normal;word-break:normal}.message-body img{max-width:100%;height:auto;border-radius:var(--radius-sm);margin:8px 0}.message-body svg{max-width:100%;height:auto}.message-body table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:12px 0;font-size:14px;white-space:nowrap;border:1px solid var(--border);border-radius:var(--radius-sm)}.message-body th,.message-body td{border:1px solid var(--border);padding:8px 12px;text-align:left}.message-body th{background:var(--surface-hover);font-weight:600;color:var(--text)}.message-body tr:nth-child(2n) td{background:var(--bg)}.message-body ul,.message-body ol{margin:8px 0 12px;padding-left:24px}.message-body li{margin-bottom:6px;line-height:1.6}.message-body li::marker{color:var(--primary)}.message-body blockquote{border-left:3px solid var(--primary);margin:12px 0;padding:8px 16px;background:var(--surface);border-radius:0 var(--radius-xs) var(--radius-xs) 0;color:var(--text-muted);font-style:italic}.message-body h1,.message-body h2,.message-body h3,.message-body h4{font-family:Inter,sans-serif;margin:20px 0 12px;color:var(--text);letter-spacing:-.02em}.message-body h1{font-size:22px}.message-body h2{font-size:19px}.message-body h3{font-size:17px}.message-body h4{font-size:15px}