@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./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(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./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(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./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(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./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(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./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}.em3d{min-width:0}.em3d h3{font-size:16px;color:#e6eeff;margin:0 0 8px;line-height:1.5}.em3d-caption,.em3d-legend,.em3d-readout{font-size:13px;line-height:1.7;color:#bdcee6;margin:8px 0}.em3d-readout{color:#a8edc5;border-left:2px solid #75bb96;padding-left:9px}.em3d svg{width:100%;display:block;touch-action:none;cursor:grab;max-height:430px}.em3d svg:active{cursor:grabbing}.em3d-buttons{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.em3d button{border:1px solid #45556e;background:#18263b;color:#e2ebff;padding:9px 12px;border-radius:10px;font:inherit;font-size:12px;cursor:pointer}.em3d label{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12px;color:#c2d0e6;line-height:1.6}.em3d input{flex:1;min-width:110px;min-height:32px;accent-color:#68dfff}.em3d .em3d-physical{border-top:1px solid #38455d;margin-top:8px;padding-top:8px;color:#ffd36a}.em3d small{display:block;color:#99a9c2;font-size:11px;line-height:1.7;margin-top:10px}.em3d-original{margin-top:15px;border-top:1px solid #38455d;padding-top:10px}.em3d-original summary{font-size:12px;color:#b6cbe8;cursor:pointer}.app:has(.em-movie-lesson){max-width:1180px}.em-movie-lesson{max-width:1180px!important;margin-inline:auto}.em-movie-main{margin:1rem 0;background:#0b1122;border:1px solid #34445e;border-radius:18px;overflow:hidden}.em-movie-main h2{font-size:clamp(1rem,2vw,1.4rem);line-height:1.6;margin:1rem 1.2rem}.em-movie-main video{display:block;width:100%;height:auto;aspect-ratio:1280/760;background:#0b1122}.em-movie-main video:fullscreen{object-fit:contain;background:#000}.em-movie-meta{display:flex;justify-content:space-between;gap:.7rem;flex-wrap:wrap;padding:.7rem 1rem;font-size:.8rem;color:#b9c8df}.em-movie-meta a{color:#7bdeef}.em-movie-scenes{display:flex;gap:.4rem;padding:.4rem 1rem 1rem;flex-wrap:wrap}.em-movie-scenes button{flex:1 1 180px;text-align:left;line-height:1.5;padding:.5rem .65rem;border:1px solid #384d6c;border-radius:9px;background:#15223a;color:#d9e6f8;font:inherit;font-size:.85rem;cursor:pointer}.em-movie-scenes button[aria-current]{border-color:#71d9ee;background:#203b50}.em-movie-notes{border:1px solid #33445f;border-radius:14px;padding:1rem;margin-bottom:1rem}.em-movie-notes p{line-height:1.8}.em-movie-notes h3{margin-top:0;font-size:1rem}.em-movie-notes details{margin-top:1rem}.em-movie-notes summary{cursor:pointer;color:#9de4e5;line-height:1.7}.em-movie-equation{margin:1rem 0;padding:.8rem;background:#111d30;border-radius:10px;overflow-x:auto}.em-movie-equation>span{font-size:.75rem;color:#abbdd8}.em-movie-notes .fig,.em-movie-notes .unique-shot-svg{max-height:480px;width:100%}@media (max-width:600px){.em-movie-lesson{padding-inline:8px!important}.em-movie-main{border-radius:10px}.em-movie-main h2{margin:.65rem}.em-movie-scenes button{flex-basis:40%;font-size:.78rem}.em-movie-main video{min-height:0}.em-movie-notes{padding:.8rem}.em-movie-lesson .lesson-controls{flex-wrap:wrap}}.lesson-narration{border:1px solid #405274;border-radius:14px;padding:14px;margin:16px 0;background:#111e30;color:#e7efff;min-width:0}.narration-controls,.narration-settings{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.narration-settings{margin-top:10px}.narration-settings label{display:flex;gap:8px;align-items:center;max-width:100%;min-width:0}.narration-settings select{max-width:100%;min-width:0;background:#17263b;color:#e7efff;border:1px solid #65799a;border-radius:8px;padding:8px;font-size:16px}.narration-caption{border-left:3px solid #67dbe1;padding:10px;background:#1a3045;line-height:1.8;overflow-wrap:anywhere}.narration-caption>span:first-child{color:#87e3e6;font-size:.85em}.narration-status,.lesson-narration details{font-size:.85rem;color:#bccde5}.lesson-narration details p{line-height:1.7}@media (max-width:480px){.narration-settings label:first-child{width:100%}.narration-settings label:first-child select{flex:1;width:0}.narration-controls .btn{font-size:.85rem;padding:8px}}.em-video-pilot{padding:18px;border:1px solid #43607c;border-radius:18px;background:#101d30;margin:18px 0;min-width:0}.em-video-pilot h2{font-size:1.2rem;margin:0 0 12px}.em-video-pilot p{line-height:1.7}.em-video-pilot video{display:block;width:100%;max-height:75vh;border-radius:10px;background:#0b1122;aspect-ratio:16/9}.em-video-pilot .video-credit{font-size:.8rem;color:#a7b7d3}.em-video-pilot details{font-size:.9rem}.study-overview,.study-original,.study-symbols details{color:#b7c9e5;font-size:13px;line-height:1.8;margin:12px 0}.study-overview summary,.study-original summary,.study-symbols summary{cursor:pointer;min-height:28px}.study-overview button{background:transparent;color:#c3d7f3;border:0;text-align:left;font:inherit;padding:8px;cursor:pointer}.study-overview button[aria-current]{color:#9ee7bd;text-decoration:underline}.study-symbols{border:1px solid #34445d;border-radius:12px;padding:12px;margin-top:18px;background:#101b2d}.study-symbols h3{font-size:14px;margin:0;color:#e4edfc}.study-next{font-size:13px!important;color:#b7c8e4!important;line-height:1.7}.lesson-step>.spiral-context{margin:0 0 18px}.calculation-history{opacity:.65;border-left:2px solid #384968;padding-left:10px}.calculation-history>p{font-size:12px;color:#aebed5}.calculation-controls{flex-wrap:wrap}.calculation-all{font-size:13px;line-height:1.7;margin-top:12px;color:#bacce8}.calculation-all summary{cursor:pointer}.figure-reading{margin:0 0 .8rem;line-height:1.65;font-size:.95rem;color:#ced9ed;text-align:left}.figure-reading strong{color:#94e6dd}.figure-reading-details{font-size:.85rem;color:#b6c6df;text-align:left;margin:.6rem 0}.figure-reading-details p{line-height:1.6}.chapter-foundation strong{color:#94e6dd}.study-aid{border:1px solid #405575;border-radius:12px;padding:12px;margin:12px 0;color:#cfddf4;font-size:14px;line-height:1.7;overflow-wrap:anywhere}.study-aid summary{cursor:pointer;color:#9be2d7;min-height:32px}.study-aid fieldset{border:0;padding:8px 0;display:flex;gap:8px;flex-wrap:wrap}.study-aid fieldset button{white-space:normal;text-align:left;max-width:100%;min-height:44px}.study-mode{padding:12px 16px;font-size:14px;line-height:1.6}.study-mode input{margin-right:8px}@media (max-width:420px){.lesson .screen-header h1{font-size:20px}.lesson .spiral-context{font-size:13px}.lesson-step{padding:14px}.study-aid{padding:10px}}.guided-lesson{--guided-edge:rgba(159,184,221,.2)}.guided-intro,.guided-context{color:#c4ccdf;line-height:1.9;font-size:15px}.guided-destination{scroll-margin-top:16px;border-left:3px solid #ffd166;padding:8px 16px;margin:25px 0 12px;background:#ffd1660b;border-radius:0 12px 12px 0}.guided-eyebrow{font-size:12px;letter-spacing:.04em;color:#c3cce0}.guided-destination p{margin:7px 0 17px;line-height:1.65;color:#e5d9b6;font-size:14px}.guided-topic-count{color:#86ddec;font-size:12px;margin-bottom:7px}.guided-destination h2{font-size:23px;line-height:1.5;margin:0;color:#f5f6ff}.guided-board{scroll-margin-top:14px;border:1px solid var(--guided-edge);background:#121a30;border-radius:18px;padding:20px;margin:20px 0}.guided-beat-head{display:flex;justify-content:space-between;gap:12px;color:#a0b5d3;font-size:12px}.guided-current-question{color:#e5d9b6;font-size:13px;line-height:1.6;margin:0 0 12px}.guided-board h3{font-size:21px;margin:10px 0 16px;line-height:1.5}.guided-scene{width:100%;height:auto;display:block;background:#0d1427;border-radius:12px;overflow:hidden}.guided-drawing{animation:guided-reveal .32s ease-out}.guided-look{display:flex;flex-direction:column;gap:5px;font-size:14px;line-height:1.75;border-left:2px solid #4ee1ff;padding:0 12px;color:#dce7f6;margin:17px 0}.guided-look>span:first-child{color:#4ee1ff;font-size:11px}.guided-explanation p{font-size:16px;line-height:1.95;margin:19px 0}.guided-equation{padding:18px 10px;background:#ffffff09;border-radius:10px;border:1px solid var(--guided-edge)}.guided-equation .equation-image-scroll{max-width:100%}.guided-equation .equation-image{max-width:100%;height:auto}.rigorous-purpose{border-bottom:1px solid var(--guided-edge);padding-bottom:12px;margin-bottom:20px;line-height:1.8;font-size:14px}.rigorous-purpose>strong{color:#ffd36a}.rigorous-basis{color:#bfcce1;font-size:13px}.rigorous-basis strong{display:block;color:#c3a2ff}.rigorous-result{margin:22px 0 0;padding:15px;border-left:3px solid #92e5bd;background:#92e5bd09;font-size:15px;line-height:1.9}.rigorous-result strong{color:#92e5bd}.rigorous-readout{font-size:13px;line-height:1.8;color:#cbd7ed}.rigorous-lab .btn{min-height:44px}.guided-recap li{margin-bottom:22px;line-height:1.85}.guided-recap .equation-image-scroll{max-width:100%}.guided-page-navigation .lesson-dots{flex-wrap:wrap}.guided-equation{overflow:hidden}.guided-equation .equation-image-scroll{overflow-x:auto;justify-content:flex-start}.guided-equation .equation-image{max-width:none;flex-shrink:0}.guided-equation:after{content:"長い式は横にスクロールできます";display:block;color:#a7b5ce;font-size:10px;margin-top:8px}.guided-beat-actions{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-top:20px}.guided-beat-actions .btn{white-space:normal;min-height:46px;font-size:14px;line-height:1.5}.guided-beat-actions .btn-primary{flex:1;max-width:75%}.guided-complete{color:#8be3ba;font-size:13px}.guided-recap,.guided-contents{border-top:1px solid var(--guided-edge);margin-top:18px;padding-top:15px;color:#b8c9e1;font-size:14px}.guided-recap summary,.guided-contents summary{cursor:pointer;min-height:35px}.guided-recap ol,.guided-contents ol{padding-left:26px}.guided-recap button,.guided-contents button{color:#d4e4fa;background:none;border:0;text-align:left;cursor:pointer;font:inherit;line-height:1.65;padding:8px 4px}.guided-check{border:1px solid #4c5368;background:#8be3ba06;border-radius:14px;padding:18px;margin:20px 0}.guided-check h3{font-size:17px;line-height:1.7;margin:10px 0 15px}.guided-choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}.guided-choices button{font:inherit;font-size:14px;line-height:1.7;min-height:56px;padding:10px;border:1px solid #4d5b79;border-radius:10px;background:#182038;color:#ecf1ff;cursor:pointer}.guided-choices button[aria-pressed=true]{border-color:#8be3ba;background:#1b3937}.guided-feedback{margin:15px 0 0;font-size:14px;line-height:1.85;color:#d4e9e4}.guided-feedback strong{display:block;color:#8be3ba}.guided-next{margin:22px 0}.guided-page-navigation{display:flex;align-items:center;gap:16px}.guided-page-navigation>.btn{flex-shrink:0;font-size:13px}.guided-camera{display:flex;flex-direction:column;gap:10px;line-height:1.6;font-size:12px;color:#c6bfd8;margin:15px 0}.guided-camera input{width:100%;accent-color:#c2a2ff;min-height:32px}.guided-outro{font-size:15px;line-height:1.9;color:#c4ccdf}.guided-lesson button:focus-visible,.guided-lesson summary:focus-visible{outline:3px solid #4ee1ff;outline-offset:3px}@keyframes guided-reveal{0%{opacity:.3}to{opacity:1}}@media (max-width:480px){.guided-board{padding:14px 10px}.guided-destination h2{font-size:20px}.guided-choices{grid-template-columns:1fr}.guided-page-navigation{flex-direction:column;align-items:stretch}.guided-page-navigation .lesson-dots{justify-content:center}.guided-scene{margin:0;width:100%}.guided-explanation p{font-size:15px}.guided-beat-actions .btn{font-size:13px;padding:10px}}@media (prefers-reduced-motion:reduce){.guided-drawing{animation:none}}.question-lesson{max-width:820px;margin:auto;padding-bottom:105px}.question-lesson h1{font-size:clamp(22px,4vw,30px);line-height:1.55}.question-progress{color:#9aaccb;font-size:12px;margin:14px 0}.question-answer{font-size:17px;line-height:1.95;color:#e2eaf7;margin:16px 0 24px;overflow-wrap:anywhere}.question-picture{padding:14px;border:1px solid #33415d;border-radius:16px;background:#11192d;margin:18px 0}.question-picture .fig-wrap{margin:0}.question-picture .guided-scene{max-width:540px;margin:auto}.question-picture .rigorous-readout{display:none}.question-detail{border-top:1px solid #33415d;margin:24px 0 12px;padding-top:16px;min-width:0}.question-detail summary{cursor:pointer;color:#aebed9;min-height:40px}.question-detail p{font-size:15px;line-height:1.9;overflow-wrap:anywhere}.question-detail h2{font-size:18px}.question-detail h3{font-size:16px;margin-top:24px}.question-detail .equation-image-scroll{max-width:100%;overflow-x:auto;justify-content:flex-start}.question-detail .equation-image{max-width:none;flex-shrink:0}.question-assumption{color:#bac5dc}.question-navigation{display:flex;justify-content:space-between;gap:14px;margin:24px 0 18px}.question-lesson .lesson-dots{flex-wrap:wrap;justify-content:center;gap:6px}.question-index{display:block;width:100%;background:none;border:0;text-align:left;color:#c7d9f5;font:inherit;font-size:14px;line-height:1.7;padding:10px;cursor:pointer}@media (max-width:480px){.question-answer{font-size:16px;line-height:1.9}.question-picture{padding:8px}.question-lesson .figure-controls{flex-wrap:wrap}}.spiral-context{border-left:2px solid #ffd36a;padding:8px 12px;margin-top:20px;color:#c2cde2;font-size:12px;line-height:1.7}.spiral-context nav{display:flex;gap:5px;flex-wrap:wrap;margin-top:8px}.spiral-goal{margin:0 0 6px;color:#eef1ff;font-size:14px;line-height:1.65}.spiral-context button{padding:7px 9px;border:1px solid #36435c;background:#121c32;color:#9eafcb;border-radius:20px;font:inherit;cursor:pointer}.spiral-context button[aria-current]{background:#24483e;color:#b3f0cf;border-color:#72bda4}.spiral-gain{border-left:2px solid #92e5bd;padding-left:12px;font-size:14px;line-height:1.7;color:#afe8cc}.work-plot svg{width:100%;display:block;max-width:500px;margin:auto}.work-plot label{display:flex;align-items:center;gap:12px;font-size:13px;color:#becde4;margin:10px 0}.work-plot input{min-width:0;flex:1;min-height:36px;accent-color:#ffd36a}@media (max-width:400px){.work-plot label{flex-direction:column;align-items:stretch;gap:2px}}.meaning-tabs{display:flex;gap:6px;flex-wrap:wrap}.meaning-tabs button,.equation-derivation button{background:#172239;border:1px solid #42506a;color:#e6edff;border-radius:12px;padding:10px;font:inherit;font-size:13px;cursor:pointer}.meaning-tabs button[aria-pressed=true]{border-color:#ffd36a;color:#ffd36a;background:#302b20}.equation-derivation button:disabled{opacity:.4;cursor:default}.meaning-caption{font-size:14px;line-height:1.8;color:#d0daec;margin:12px 0}.meaning-values{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:#d5e7f6}.meaning-values span{flex:1 1 100px;padding:8px;border-radius:8px;background:#17263d;line-height:1.7}.meaning-panel{margin-top:16px;padding-top:8px;border-top:1px solid #394760}.path-meaning svg{display:block;width:100%;max-width:470px;margin:auto}.path-meaning label{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:13px;color:#c4d3e9}.path-meaning input{min-height:36px;min-width:100px;flex:1;accent-color:#65e2ff}.equation-meaning{border:1px solid #3a4963;background:#101b2d;border-radius:16px;padding:16px;margin:18px 0;min-width:0}.equation-meaning header{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.equation-meaning h2{font-size:16px;margin:0;color:#eff4ff}.equation-kind{font-size:11px;border:1px solid #476657;border-radius:20px;padding:4px 8px;color:#a6e6c5}.equation-symbols{display:grid;grid-template-columns:1fr;gap:5px;margin:12px 0;font-size:12px;line-height:1.6}.equation-symbols>div{display:grid;grid-template-columns:minmax(55px,24%) 1fr;gap:8px}.equation-symbols dt{color:#ffd36a;overflow-wrap:anywhere}.equation-symbols dd{margin:0;color:#bfcfe5}.more-symbols summary{font-size:12px;color:#b3c8e8;cursor:pointer}.equation-derivation{border-top:1px solid #34445d;padding-top:12px;margin-top:14px}.equation-derivation summary{cursor:pointer;color:#9ee7e6;font-size:13px}.equation-derivation nav{display:flex;justify-content:space-between;gap:8px;margin-top:16px}.equation-before{font-size:11px;color:#9dafc9;opacity:.7}.equation-current{border-left:2px solid #ffd36a;padding-left:8px;margin:10px 0}.spiral-lesson .equation-meaning .equation-image-scroll{max-width:100%}:root{--bg: #0b1026;--bg2: #131a3d;--card: rgba(255, 255, 255, .055);--card-border: rgba(255, 255, 255, .12);--text: #eef1ff;--text-dim: #9aa3c7;--cyan: #4ee1ff;--purple: #c86bff;--gold: #ffd166;--green: #7bffb2;--red: #ff5d7a;--grad-main: linear-gradient(135deg, #4ee1ff, #c86bff);--grad-battle: linear-gradient(135deg, #ff8a5c, #ff5d7a);--radius: 18px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0}body{background:radial-gradient(1000px 600px at 80% -10%,rgba(200,107,255,.18),transparent 60%),radial-gradient(900px 500px at -10% 20%,rgba(78,225,255,.14),transparent 60%),var(--bg);color:var(--text);font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Yu Gothic,system-ui,sans-serif;min-height:100dvh}.app{max-width:560px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column}.app-inner{flex:1;padding-bottom:90px}.screen{padding:18px 16px 24px;animation:fade-in .25s ease}@keyframes fade-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}h1{font-size:22px;margin:2px 0 0;letter-spacing:.02em}h2{font-size:16px;margin:0 0 8px}p{line-height:1.85}.btn{border:none;border-radius:14px;padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer;color:var(--text);background:var(--card);border:1px solid var(--card-border);transition:transform .12s ease,filter .12s ease,box-shadow .2s ease;font-family:inherit}.btn:active{transform:scale(.96)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--grad-main);color:#0b1026;box-shadow:0 4px 24px #4ee1ff59}.btn-battle{background:var(--grad-battle);color:#fff;box-shadow:0 4px 24px #ff5d7a66}.btn-danger{background:#ff5d7a26;border-color:#ff5d7a80;color:var(--red)}.btn-ghost{background:var(--card)}.btn-sm{padding:8px 14px;font-size:13px}.btn-big{width:100%;padding:16px;font-size:17px;border-radius:16px}.btn-back{background:var(--card);border:1px solid var(--card-border);color:var(--text);border-radius:12px;width:40px;height:40px;font-size:18px;cursor:pointer;flex-shrink:0}.input{width:100%;background:#0000004d;border:1px solid var(--card-border);border-radius:12px;color:var(--text);padding:12px 14px;font-size:15px;font-family:inherit}.input:focus{outline:2px solid var(--cyan);border-color:transparent}.screen-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}.screen-header-tag{font-size:12px;color:var(--text-dim);letter-spacing:.06em}.screen-note{color:var(--text-dim);font-size:14px;line-height:1.8}.screen-note.small{font-size:12px}.screen-note a{color:var(--cyan)}.pop-in{animation:pop-in .3s cubic-bezier(.2,1.4,.4,1)}@keyframes pop-in{0%{opacity:0;transform:scale(.92) translateY(8px)}to{opacity:1;transform:none}}.glow-pulse{animation:glow-pulse 1.6s ease-in-out infinite}@keyframes glow-pulse{0%,to{filter:brightness(1)}50%{filter:brightness(1.25)}}.hud{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.hud-level{display:flex;align-items:center;gap:12px}.level-badge{background:var(--grad-main);color:#0b1026;font-weight:900;border-radius:14px;padding:8px 12px;font-size:13px;box-shadow:0 0 20px #4ee1ff66}.level-badge span{font-size:19px}.level-bar-wrap{flex:1}.level-bar{height:12px;background:#00000059;border-radius:999px;overflow:hidden;border:1px solid var(--card-border)}.level-bar-fill{height:100%;background:var(--grad-main);border-radius:999px;transition:width .6s cubic-bezier(.2,1,.3,1);box-shadow:0 0 12px #4ee1ffcc}.level-bar-label{font-size:11px;color:var(--text-dim);margin-top:4px;text-align:right}.hud-stats{display:flex;gap:8px}.hud-stat{font-size:12px;color:var(--text-dim);background:var(--card);border:1px solid var(--card-border);border-radius:999px;padding:4px 10px}.chapter-card{background:linear-gradient(135deg,#4ee1ff1f,#c86bff1f);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px;margin-bottom:20px}.chapter-tag{font-size:11px;letter-spacing:.15em;color:var(--cyan);font-weight:700}.chapter-card p{margin:6px 0 0;color:var(--text-dim);font-size:14px}.stage-path{display:flex;flex-direction:column}.stage-node{position:relative}.stage-connector{width:3px;height:26px;margin-left:44px;background:linear-gradient(var(--card-border),var(--card-border));border-radius:2px}.stage-node.cleared .stage-connector{background:var(--grad-main)}.stage-card{display:flex;gap:14px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:16px;align-items:flex-start}.stage-node.cleared .stage-card{border-color:#4ee1ff73}.stage-enemy{font-size:38px;width:58px;height:58px;display:grid;place-items:center;background:#0000004d;border-radius:16px;flex-shrink:0}.stage-info{flex:1}.stage-title{font-size:17px;font-weight:800}.stage-star{margin-left:6px}.stage-subtitle{font-size:13px;color:var(--text-dim);margin-top:2px}.stage-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.coming-soon{margin-top:26px}.coming-soon-inner{border:1px dashed var(--card-border);border-radius:var(--radius);padding:16px;text-align:center;color:var(--text-dim);font-size:13px}.lesson-intro{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:16px;font-size:15px;margin-top:0}.lesson-steps{display:flex;flex-direction:column;gap:14px}.lesson-step{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px}.lesson-step h2{color:var(--cyan)}.lesson-step p{margin:0;font-size:15px}.lesson-step{scroll-margin-top:12px}.lesson-step.pop-in{animation-name:lesson-fade-in}@keyframes lesson-fade-in{0%{opacity:0}to{opacity:1}}.lesson-destination{margin:0 0 16px;padding:12px 14px;border-left:3px solid var(--gold);border-radius:0 10px 10px 0;background:#ffd1660f}.lesson-destination>div+div{margin-top:10px}.lesson-destination dt{color:var(--text-dim);font-size:11px;font-weight:700;margin-bottom:3px}.lesson-destination dd{margin:0;font-size:13px;line-height:1.8;min-width:0}.lesson-destination .lesson-theme{color:var(--gold);font-weight:700;font-size:14px}.lesson-current-label{display:flex;align-items:center;gap:10px;color:var(--cyan);font-size:11px;font-weight:700}.lesson-current-label .lesson-card-count{margin:0}.lesson-current-label{flex-wrap:wrap}.lesson-review-tag{color:var(--gold);border:1px solid rgba(255,209,102,.3);border-radius:5px;padding:2px 6px}.lesson-orientation h2{margin-top:5px}.lesson-card-count{color:var(--text-dim);font-size:11px;font-weight:700;letter-spacing:.04em;margin-bottom:6px}.lesson-navigation{display:flex;gap:12px;align-items:center;margin-bottom:12px}.figure-controls select{color:var(--text);background:var(--bg);border:1px solid var(--text-dim);border-radius:8px;padding:8px}.lesson-navigation{flex-wrap:wrap}.lesson-dots{display:flex;justify-content:center;flex-wrap:wrap;flex:1;min-width:160px;gap:0}.lesson-dot{display:grid;place-items:center;width:28px;height:32px;padding:0;border:0;background:transparent;cursor:pointer}.lesson-dot span{width:7px;height:7px;border-radius:50%;background:var(--text-dim);opacity:.45;transition:transform .2s,opacity .2s}.lesson-dot.active span{background:var(--cyan);opacity:1;transform:scale(1.4)}.lesson-dot:hover span{opacity:1}.lesson-dot:focus-visible{outline:2px solid var(--cyan);border-radius:8px}.calculation-board{margin-top:18px;border:1px solid var(--card-border);border-radius:14px;background:#4ee1ff09;padding:12px;min-width:0}.calculation-header{display:flex;justify-content:space-between;align-items:center;gap:8px}.calculation-header h3{margin:0;font-size:14px;color:var(--gold)}.calculation-header>span{font-size:12px;color:var(--text-dim)}.calculation-lines{list-style:none;margin:12px 0;padding:0}.calculation-line{position:relative;border-left:3px solid transparent;border-radius:8px;padding:9px 8px;margin:6px 0;transition:background .35s,border-color .35s}.calculation-line+.calculation-line:before{content:"↓";display:block;color:var(--text-dim);font-size:16px;margin-top:-5px;margin-bottom:5px}.is-reference .calculation-line+.calculation-line:before{content:none}.calculation-line.is-active{background:#4ee1ff1a;border-left-color:var(--cyan)}.calculation-line.is-active .equation-image{animation:equation-arrive .5s ease-out}.calculation-line-select{display:flex;align-items:center;gap:7px;text-align:left;color:var(--text-dim);background:none;border:0;padding:0;cursor:pointer;font-size:12px;line-height:1.6;width:100%}.calculation-line.is-active .calculation-line-select{color:var(--cyan)}.calculation-number{display:inline-grid;place-items:center;flex-shrink:0;width:21px;height:21px;border:1px solid currentColor;border-radius:50%;font-size:11px}.equation-image-scroll{overflow-x:auto;padding:12px 0 5px}.equation-image{display:block;width:auto;height:auto;max-width:none;margin:0 auto}.calculation-controls{display:flex;gap:6px;flex-wrap:wrap}.calculation-controls .btn{font-size:12px;padding:8px 10px}@keyframes equation-arrive{0%{opacity:.3;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.calculation-line.is-active .equation-image{animation:none}.calculation-line{transition:none}}.figure-controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:8px;font-size:12px}.figure-controls .btn{padding:8px;font-size:12px}.figure-range{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--text-dim);margin:8px 0}.figure-range input{flex:1;min-width:0;accent-color:var(--cyan)}.figure-note{font-size:12px!important;color:var(--text-dim)}.unique-shot-svg{display:block;width:100%;height:auto;background:#0000001f;border-radius:12px;margin-bottom:8px}.lesson-step{overflow-wrap:anywhere}.formula-card{margin-top:14px;background:linear-gradient(135deg,#ffd1661f,#ff8a5c14);border:1px solid rgba(255,209,102,.4);border-radius:14px;padding:14px;text-align:center}.formula-note{font-size:13px;color:var(--gold);margin-top:8px}.math-block{font-size:20px;overflow-x:auto;padding:4px 0}.math-inline{display:inline-block;max-width:100%;overflow-x:auto;overflow-y:hidden;vertical-align:middle;white-space:nowrap;padding:.15em 0}.lesson-outro{background:linear-gradient(135deg,#7bffb21a,#4ee1ff14);border:1px solid rgba(123,255,178,.35);border-radius:var(--radius);padding:16px;margin-top:14px;font-size:15px}.lesson-outro p{margin:0}.lesson-controls{margin-top:20px}.step-dots{display:flex;gap:8px;justify-content:center;margin-bottom:14px}.dot{width:9px;height:9px;border-radius:50%;background:var(--card-border);transition:all .3s}.dot.on{background:var(--cyan);box-shadow:0 0 8px var(--cyan)}.xp-tag{margin-left:10px;background:#00000040;border-radius:999px;padding:3px 10px;font-size:13px}.battle-header{display:flex;align-items:center;gap:12px;margin-bottom:10px}.battle-stage-name{flex:1;font-weight:800;font-size:15px}.hearts{font-size:17px;letter-spacing:2px}.heart-empty{opacity:.45}.player-hit{animation:player-hit .45s ease}@keyframes player-hit{0%,to{transform:none}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-5px)}80%{transform:translate(5px)}}.enemy-area{text-align:center;padding:8px 0 14px;position:relative}.enemy{position:relative;display:inline-block}.enemy-emoji{font-size:74px;display:inline-block;filter:drop-shadow(0 0 24px rgba(200,107,255,.5));animation:enemy-idle 2.6s ease-in-out infinite}@keyframes enemy-idle{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.enemy-shake .enemy-emoji{animation:enemy-shake .45s ease}@keyframes enemy-shake{0%,to{transform:none;filter:drop-shadow(0 0 24px rgba(255,93,122,.9)) brightness(1.6)}25%{transform:translate(-10px) rotate(-6deg)}50%{transform:translate(10px) rotate(6deg)}75%{transform:translate(-6px)}}.damage-float{position:absolute;top:-6px;right:-30px;font-size:26px;font-weight:900;color:var(--gold);text-shadow:0 0 14px rgba(255,209,102,.9);animation:damage-float .9s ease forwards;pointer-events:none}@keyframes damage-float{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-46px) scale(1.35)}}.enemy-name{font-weight:800;margin-top:2px}.hp-bar{height:14px;background:#0006;border-radius:999px;border:1px solid var(--card-border);overflow:hidden;margin:8px auto 0;max-width:320px}.hp-bar-fill{height:100%;background:linear-gradient(90deg,#7bffb2,#4ee1ff);transition:width .5s cubic-bezier(.2,1,.3,1);box-shadow:0 0 12px #7bffb2b3}.hp-bar-fill.hp-low{background:linear-gradient(90deg,#ff8a5c,#ff5d7a)}.hp-label{font-size:12px;color:var(--text-dim);margin-top:4px}.combo-badge{display:inline-block;margin-top:8px;background:var(--grad-battle);border-radius:999px;padding:5px 16px;font-weight:900;font-size:14px;box-shadow:0 0 18px #ff5d7a99}.timer-bar{height:7px;background:#0006;border-radius:999px;overflow:hidden;margin-bottom:12px}.timer-bar-fill{height:100%;background:var(--grad-main);transition:width .12s linear}.timer-bar-fill.timer-low{background:var(--grad-battle)}.question-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px}.question-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.difficulty{color:var(--gold);letter-spacing:2px;font-size:14px}.star-btn{background:none;border:none;font-size:22px;cursor:pointer;color:var(--text-dim);transition:transform .15s}.star-btn:active{transform:scale(1.3)}.star-btn.starred{color:var(--gold)}.question-text{font-size:16px;line-height:1.9;margin-bottom:16px}.choices{display:flex;flex-direction:column;gap:10px}.choice{display:flex;align-items:center;gap:12px;text-align:left;background:#00000047;border:1px solid var(--card-border);border-radius:14px;padding:13px 14px;color:var(--text);font-size:15px;cursor:pointer;font-family:inherit;transition:transform .12s,border-color .15s,background .15s}.choice:not(:disabled):hover{border-color:var(--cyan)}.choice:not(:disabled):active{transform:scale(.97)}.choice-label{width:28px;height:28px;border-radius:9px;background:var(--card);border:1px solid var(--card-border);display:grid;place-items:center;font-weight:800;font-size:13px;flex-shrink:0}.choice-correct{border-color:var(--green)!important;background:#7bffb224;box-shadow:0 0 16px #7bffb259}.choice-wrong{border-color:var(--red)!important;background:#ff5d7a24}.choice-dim{opacity:.45}.hint-row{margin-top:14px}.hint-box{background:#ffd1661a;border:1px solid rgba(255,209,102,.4);border-radius:12px;padding:12px 14px;font-size:14px;line-height:1.8}.feedback{margin-top:16px}.feedback-head{font-size:19px;font-weight:900;margin-bottom:10px}.feedback-head.ok{color:var(--green);text-shadow:0 0 16px rgba(123,255,178,.6)}.feedback-head.ng{color:var(--red)}.explanation{background:#00000047;border:1px solid var(--card-border);border-radius:14px;padding:14px;font-size:14.5px;line-height:1.9;margin-bottom:14px}.explanation-tag{font-size:11px;font-weight:800;color:var(--cyan);letter-spacing:.12em;margin-bottom:6px}.result-screen{display:grid;place-items:center;min-height:80dvh;position:relative}.result-card{background:var(--card);border:1px solid var(--card-border);border-radius:24px;padding:28px 22px;text-align:center;width:100%;max-width:420px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.result-emoji{font-size:60px}.result-title{font-size:34px;margin:8px 0 4px;letter-spacing:.06em}.victory-title{background:linear-gradient(135deg,#ffd166,#ff8a5c);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 18px rgba(255,209,102,.5))}.defeat-title{color:var(--text-dim)}.result-sub{color:var(--text-dim);font-size:14px}.result-stats{display:flex;justify-content:center;gap:12px;margin:18px 0}.result-stat{background:#0000004d;border-radius:14px;padding:10px 16px;display:flex;flex-direction:column;gap:2px}.result-stat span{font-size:11px;color:var(--text-dim)}.result-stat b{font-size:18px}.result-xp{font-size:30px;font-weight:900;color:var(--gold);text-shadow:0 0 20px rgba(255,209,102,.7);margin-bottom:6px}.first-clear-tag{font-size:12px;color:var(--text-dim);margin-bottom:12px}.result-card .btn-big{margin-top:10px}.confetti{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden;z-index:5}.confetti span{position:absolute;top:-20px;border-radius:2px;animation:confetti-fall linear forwards}@keyframes confetti-fall{0%{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(105dvh) rotate(720deg);opacity:.7}}.formula-list,.review-list{display:flex;flex-direction:column;gap:12px;margin-top:14px}.formula-item,.review-item{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:16px}.formula-item-name{font-weight:800;color:var(--cyan);margin-bottom:6px}.formula-item-meaning{font-size:13.5px;color:var(--text-dim);line-height:1.8;margin:8px 0 10px}.review-item-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}.review-stage-tag{font-size:11px;background:#4ee1ff1f;border:1px solid rgba(78,225,255,.35);color:var(--cyan);border-radius:999px;padding:3px 10px}.review-item-head .star-btn{margin-left:auto}.review-answer{font-weight:800;color:var(--green);margin:10px 0}.empty-state{text-align:center;padding:60px 20px;color:var(--text-dim);line-height:2}.empty-emoji{font-size:46px;margin-bottom:8px}.settings-section{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px;margin-bottom:14px}.settings-section .input{margin:10px 0}.settings-row{display:flex;align-items:center;gap:12px}.saved-note{color:var(--green);font-size:14px}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:560px;display:flex;background:#0b1026e6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--card-border);padding:6px 8px calc(6px + env(safe-area-inset-bottom));z-index:20}.bottom-nav button{flex:1;background:none;border:none;color:var(--text-dim);font-size:11px;font-weight:700;display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 0;cursor:pointer;border-radius:12px;font-family:inherit}.bottom-nav button.active{color:var(--cyan)}.nav-icon{font-size:20px}.chat-fab{position:fixed;right:calc(50% - 264px);bottom:86px;width:54px;height:54px;border-radius:50%;border:none;background:var(--grad-main);font-size:25px;cursor:pointer;box-shadow:0 6px 24px #4ee1ff80;z-index:25;transition:transform .15s}.chat-fab:active{transform:scale(.92)}@media (max-width: 592px){.chat-fab{right:16px}}.chat-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;z-index:40;display:flex;justify-content:center;align-items:flex-end}.chat-drawer{width:100%;max-width:560px;height:78dvh;background:var(--bg2);border-radius:24px 24px 0 0;border:1px solid var(--card-border);border-bottom:none;display:flex;flex-direction:column;animation:drawer-up .28s cubic-bezier(.2,1,.3,1)}@keyframes drawer-up{0%{transform:translateY(40%);opacity:.4}to{transform:none;opacity:1}}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--card-border)}.chat-title{font-weight:900;font-size:16px}.chat-sub{font-size:12px;color:var(--text-dim)}.chat-messages{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px}.chat-bubble{max-width:88%;padding:11px 14px;border-radius:16px;font-size:14.5px;line-height:1.85;white-space:pre-wrap;word-break:break-word}.chat-bubble.user{align-self:flex-end;background:var(--grad-main);color:#0b1026;border-bottom-right-radius:6px;font-weight:600}.chat-bubble.assistant{align-self:flex-start;background:var(--card);border:1px solid var(--card-border);border-bottom-left-radius:6px}.thinking-dots{color:var(--text-dim)}.chat-notice{text-align:center;color:var(--text-dim);font-size:13px;line-height:1.9;padding:20px 10px}.chat-error{color:var(--red);font-size:13px;text-align:center}.chat-input-row{display:flex;gap:8px;padding:12px 14px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--card-border)}.chapter-list{display:flex;flex-direction:column;gap:12px}.chapter-block.complete .chapter-toggle{border-color:#ffd16680}.chapter-toggle{display:flex;align-items:center;gap:14px;width:100%;text-align:left;cursor:pointer;border:1px solid var(--card-border);background:linear-gradient(135deg,#4ee1ff1a,#c86bff1a);border-radius:var(--radius);padding:14px 16px;color:var(--text);font-family:inherit;margin-bottom:0;transition:border-color .2s}.chapter-toggle:active{transform:scale(.99)}.chapter-icon{font-size:30px;width:50px;height:50px;display:grid;place-items:center;background:#0000004d;border-radius:14px;flex-shrink:0}.chapter-toggle-info{flex:1;display:flex;flex-direction:column;gap:3px}.chapter-toggle-title{font-size:17px;font-weight:900}.chapter-toggle-sub{font-size:12px;color:var(--text-dim)}.chapter-progress{display:flex;align-items:center;gap:8px;margin-top:3px}.chapter-progress-bar{flex:1;height:7px;background:#00000059;border-radius:999px;overflow:hidden;display:block}.chapter-progress-fill{display:block;height:100%;background:var(--grad-main);border-radius:999px;transition:width .5s ease}.chapter-progress-label{font-size:11px;color:var(--text-dim)}.chapter-chevron{font-size:16px;color:var(--text-dim);transition:transform .25s}.chapter-chevron.open{transform:rotate(180deg)}.chapter-block .stage-path{padding:14px 4px 4px}.formula-category-title{margin:22px 0 0;font-size:15px;color:var(--cyan);letter-spacing:.08em}.fig-wrap{margin-top:14px}.fig{width:100%;height:auto;display:block;background:#00000047;border:1px solid var(--card-border);border-radius:14px}.fig-slider{width:100%;margin-top:10px;accent-color:var(--cyan);height:22px}.katex{font-size:1.06em}.level-picker{padding:10px 0 0}.level-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:10px}.level-tab{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px;border-radius:12px;border:1px solid var(--card-border);background:var(--card);color:var(--text);font:inherit;cursor:pointer}.level-tab .level-tab-name{font-weight:800;font-size:14px}.level-tab .level-tab-count{font-size:11px;color:var(--dim)}.level-tab.current{border-color:#4ee1ff99;background:linear-gradient(135deg,#4ee1ff29,#c86bff1f)}.level-tab.current .level-tab-count{color:var(--cyan)}.level-tagline{margin:0 0 8px;font-size:13px;color:var(--dim)}.lesson-beat{margin:6px 0 2px}.lesson-beat-tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;border:1px solid var(--card-border);color:var(--dim)}.lesson-beat-tag.beat-0{color:var(--cyan);border-color:#4ee1ff80}.lesson-beat-tag.beat-1{color:var(--gold);border-color:#ffd16680}.lesson-beat-tag.beat-2{color:var(--green);border-color:#7bffb280}.lesson-beat-tag.beat-3{color:var(--purple);border-color:#c86bff80}.advanced-preview{margin-top:14px;padding:14px;border-radius:var(--radius);border:1px dashed rgba(200,107,255,.5);background:linear-gradient(135deg,#c86bff1a,#4ee1ff0f)}.advanced-preview h3{margin:0 0 8px;font-size:14px;color:var(--purple)}.advanced-preview dl{margin:6px 0 0;display:grid;gap:6px}.advanced-preview dt{font-size:12px;color:var(--dim)}.advanced-preview dd{margin:0;font-size:14px}.level-bridge-toolkit{margin:6px 0;padding-left:20px;font-size:14px}.level-bridge-toolkit li{margin:3px 0}.level-bridge-note{font-size:12px;color:var(--dim);margin:6px 0}.level-bridge-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.level-bridge-links button{padding:6px 12px;border-radius:999px;border:1px solid rgba(78,225,255,.45);background:#4ee1ff1a;color:var(--cyan);font:inherit;font-size:13px;cursor:pointer}.level-slide-head{margin-bottom:10px}.level-now{display:flex;align-items:center;gap:8px;margin:0 0 4px;font-size:12px;color:var(--dim)}.level-now-phase{font-weight:700;color:var(--cyan)}.level-now-count{margin-left:auto}.level-slide-head h2{margin:0;font-size:19px;line-height:1.4}.level-beat-line{margin:4px 0 0;font-size:11px;color:var(--dim)}.level-role{padding:1px 8px;border-radius:999px;border:1px solid var(--card-border);font-size:11px}.level-role.role-0{color:var(--cyan)}.level-role.role-1{color:var(--gold)}.level-role.role-2{color:var(--green)}.level-role.role-3{color:var(--purple)}.level-role.role-4{color:var(--orange, #ff8a5c)}.level-symbols{margin-top:12px}.level-symbols>summary{font-size:13px;color:var(--dim);cursor:pointer}.level-gain{font-size:13px}