@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: #f4f6fb;--bg-2: #eaf0fb;--surface: #ffffff;--surface-2: #f8fafd;--ink: #141b2d;--muted: #5b6678;--line: #dde3ee;--accent: #4f46e5;--accent-2: #7c3aed;--accent-soft: #eef0ff;--accent-ink: #ffffff;--mark: #fff1b8;--mark-ink: #3b2f00;--ok: #15803d;--ok-soft: #e3f6ea;--warn: #a35f00;--warn-soft: #fdf1df;--bad: #c0261c;--bad-soft: #fde8e6;--shadow-sm: 0 1px 2px rgba(20, 27, 45, .06), 0 1px 1px rgba(20, 27, 45, .04);--shadow: 0 8px 24px -10px rgba(20, 27, 45, .18), 0 2px 6px rgba(20, 27, 45, .05);--radius: 18px;--font-display: "Lexend", "Segoe UI", system-ui, sans-serif;--font-body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;--h-blue: #2563eb;--h-blue-soft: #e6efff;--h-violet: #7c3aed;--h-violet-soft: #f1eaff;--h-green: #15803d;--h-green-soft: #e3f6ea;--h-orange: #d9480f;--h-orange-soft: #fff0e6;--h-rose: #be185d;--h-rose-soft: #fde8f1;--h-teal: #0f766e;--h-teal-soft: #e0f5f2;color-scheme:light}:root[data-theme=dark]{--bg: #0d111a;--bg-2: #121a2a;--surface: #151c2a;--surface-2: #1a2333;--ink: #e8ecf4;--muted: #9aa6ba;--line: #263044;--accent: #8b85ff;--accent-2: #b48cff;--accent-soft: #1e2142;--accent-ink: #0d111a;--mark: #5a4a0a;--mark-ink: #fff4c2;--ok: #4ade80;--ok-soft: #10281a;--warn: #f0ad4e;--warn-soft: #2d2213;--bad: #f87171;--bad-soft: #321615;--shadow-sm: none;--shadow: 0 10px 30px -12px rgba(0, 0, 0, .6);--h-blue: #7aa7ff;--h-blue-soft: #16223d;--h-violet: #b69cff;--h-violet-soft: #221a3d;--h-green: #5fd38d;--h-green-soft: #12291c;--h-orange: #ff9a62;--h-orange-soft: #33200f;--h-rose: #f58bbd;--h-rose-soft: #331526;--h-teal: #4fd1c5;--h-teal-soft: #0f2b29;color-scheme:dark}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0d111a;--bg-2: #121a2a;--surface: #151c2a;--surface-2: #1a2333;--ink: #e8ecf4;--muted: #9aa6ba;--line: #263044;--accent: #8b85ff;--accent-2: #b48cff;--accent-soft: #1e2142;--accent-ink: #0d111a;--mark: #5a4a0a;--mark-ink: #fff4c2;--ok: #4ade80;--ok-soft: #10281a;--warn: #f0ad4e;--warn-soft: #2d2213;--bad: #f87171;--bad-soft: #321615;--shadow-sm: none;--shadow: 0 10px 30px -12px rgba(0, 0, 0, .6);--h-blue: #7aa7ff;--h-blue-soft: #16223d;--h-violet: #b69cff;--h-violet-soft: #221a3d;--h-green: #5fd38d;--h-green-soft: #12291c;--h-orange: #ff9a62;--h-orange-soft: #33200f;--h-rose: #f58bbd;--h-rose-soft: #331526;--h-teal: #4fd1c5;--h-teal-soft: #0f2b29;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}html{scroll-padding-top:90px}body{background:radial-gradient(1200px 500px at 10% -10%,var(--bg-2),transparent 60%),var(--bg);background-attachment:fixed;color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}.wrap{max-width:920px;margin:0 auto;padding:0 16px 72px;display:grid;gap:20px}.top{position:sticky;top:0;z-index:5;margin:0 -16px;padding:12px 16px;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid color-mix(in srgb,var(--line) 60%,transparent)}.brand{display:flex;align-items:center;gap:12px}.logo{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:var(--shadow)}.logo svg{width:22px;height:22px}.logo:has(img){background:#f7f7f7;overflow:hidden}.logo img{width:100%;height:100%;object-fit:cover;display:block}.login-logo{display:block;width:100%;max-width:320px;height:auto;margin:0 auto 8px;border-radius:14px}.brand h1{font-family:var(--font-display);font-weight:600;font-size:20px;margin:0;letter-spacing:-.01em}.brand p{margin:0;color:var(--muted);font-size:13.5px}.who{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:14.5px}.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;background:var(--accent-soft);color:var(--accent)}h2{font-family:var(--font-display);font-weight:600;font-size:19px;margin:0;text-wrap:balance;letter-spacing:-.01em}h3{font-family:var(--font-display);font-weight:600;font-size:16.5px;margin:0}.section-title{font-size:15px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:4px 2px 10px}.eyebrow{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}.hint{color:var(--muted);font-size:14.5px;margin:0}.muted{color:var(--muted)}.small{font-size:13.5px}.err-text{color:var(--bad)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:grid;gap:14px;box-shadow:var(--shadow-sm)}.card>header{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:space-between}.login{max-width:440px;justify-self:center;width:100%;margin-top:4vh;box-shadow:var(--shadow);padding:26px}.login h2{font-size:22px}.row{display:flex;flex-wrap:wrap;gap:10px 12px;align-items:end}.row.between{justify-content:space-between;align-items:center}.row.center{justify-content:center}.quiz-rules{margin:4px 0 2px}.grow{flex:1 1 260px}label.field,div.field{display:grid;gap:5px;font-size:13.5px;color:var(--muted);font-weight:600}.static{color:var(--ink);font-weight:400;font-size:16px;padding:8px 0}select,input[type=text],input[type=password],textarea{font:inherit;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:11px;padding:10px 12px;width:100%;transition:border-color .15s,box-shadow .15s}select{width:auto;min-width:130px}select:focus,input:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}textarea{resize:vertical;min-height:84px;line-height:1.5}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn{display:inline-flex;align-items:center;gap:6px;font:600 15px var(--font-body);border-radius:11px;padding:10px 16px;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--ink);transition:transform .08s,background .15s,border-color .15s,box-shadow .15s}.btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.btn:active:not(:disabled){transform:translateY(1px)}.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent;color:#fff;box-shadow:var(--shadow)}.btn.primary:hover:not(:disabled){color:#fff;filter:brightness(1.06)}.btn.small{padding:6px 12px;font-size:13.5px;border-radius:9px}.btn.ghost{background:transparent;border-color:transparent;color:var(--accent)}.btn.ghost:hover:not(:disabled){background:var(--accent-soft)}.btn.ok{border-color:var(--ok);color:var(--ok)}.btn.bad{border-color:var(--bad);color:var(--bad)}.btn.bad:hover:not(:disabled){background:var(--bad-soft);color:var(--bad);border-color:var(--bad)}.btn:disabled{opacity:.5;cursor:not-allowed}.roles,.tabs{display:inline-flex;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px;gap:4px;justify-self:start;box-shadow:var(--shadow-sm)}.roles button,.tabs button{border:0;background:transparent;color:var(--muted);font:600 14.5px var(--font-body);padding:8px 18px;border-radius:999px;cursor:pointer;transition:background .15s,color .15s}.roles button:hover,.tabs button:hover{color:var(--ink)}.roles button[aria-pressed=true],.tabs button[aria-pressed=true]{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}.roles{display:flex;justify-self:stretch}.roles button{flex:1}.status{font-size:14.5px;padding:11px 14px;border-radius:12px;background:var(--accent-soft);margin:0}.status.err{background:var(--bad-soft);color:var(--bad)}.status.ok{background:var(--ok-soft);color:var(--ok)}.status.warn{background:var(--warn-soft);color:var(--warn)}.drop{border:2px dashed var(--line);border-radius:16px;padding:28px 20px;text-align:center;display:grid;gap:8px;justify-items:center;background:var(--surface-2);transition:border-color .15s,background .15s}.drop.over{border-color:var(--accent);background:var(--accent-soft)}.thumbs{display:flex;flex-wrap:wrap;gap:12px}.thumb{width:104px;display:grid;gap:4px;font-size:12px;color:var(--muted)}.thumb img,.thumb .doc{width:104px;height:130px;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:var(--bg)}.thumb .doc{display:grid;place-items:center;font-weight:700;color:var(--accent)}.thumb span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thumb-actions{display:flex;justify-content:space-between}.thumb-actions button{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:7px;width:30px;height:26px;cursor:pointer}.meter{display:flex;flex-wrap:wrap;gap:8px}.chip{font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;white-space:nowrap;background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}.chip.pending,.chip.draft,.chip.generating{background:var(--warn-soft);color:var(--warn);border-color:transparent}.chip.generating:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:currentColor;margin-right:6px;vertical-align:1px;animation:pulse 1.2s infinite}.chip.approved,.chip.published,.chip.check-pass{background:var(--ok-soft);color:var(--ok);border-color:transparent}.chip.rejected,.chip.failed,.chip.check-fail{background:var(--bad-soft);color:var(--bad);border-color:transparent}.chip.check-error{background:var(--warn-soft);color:var(--warn);border-color:transparent}@keyframes pulse{50%{opacity:.25}}.item{border:1px solid var(--line);border-left:5px solid var(--warn);border-radius:12px;padding:14px 16px;display:grid;gap:10px;background:var(--surface)}.item.approved{border-left-color:var(--ok)}.item.rejected{border-left-color:var(--bad);opacity:.65}.item-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.item-head .actions,.actions{display:flex;gap:6px;margin-left:auto;align-items:center}.tag{font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.preview{font-size:15.5px;background:var(--surface-2);border-radius:10px;padding:10px 12px}.list{display:grid;gap:10px}.sticky{position:sticky;bottom:12px;z-index:2;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow)}.pubrow{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line)}.pubrow:last-child{border-bottom:0}.pubrow .row{align-items:center}.doubt{border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:grid;gap:8px}.rich p{margin:0 0 10px}.rich p:last-child{margin:0}.rich.inline p{margin:0}.rich .katex-display{overflow-x:auto;overflow-y:hidden}.picker{display:grid}.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.tile{--h: var(--h-blue);--hs: var(--h-blue-soft);text-align:left;cursor:pointer;display:grid;gap:6px;padding:14px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);color:var(--ink);box-shadow:var(--shadow-sm);border-top:4px solid var(--h);transition:transform .12s,box-shadow .15s}.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.tile[aria-pressed=true]{background:var(--hs);border-color:var(--h)}.tile-subject{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--h)}.tile-title{font:600 16px var(--font-display);line-height:1.3}.hue-blue{--h: var(--h-blue);--hs: var(--h-blue-soft)}.hue-violet{--h: var(--h-violet);--hs: var(--h-violet-soft)}.hue-green{--h: var(--h-green);--hs: var(--h-green-soft)}.hue-orange{--h: var(--h-orange);--hs: var(--h-orange-soft)}.hue-rose{--h: var(--h-rose);--hs: var(--h-rose-soft)}.hue-teal{--h: var(--h-teal);--hs: var(--h-teal-soft)}.hero{--h: var(--h-blue);--hs: var(--h-blue-soft);border-radius:22px;padding:26px 24px;display:grid;gap:10px;color:#fff;box-shadow:var(--shadow);background:radial-gradient(500px 200px at 100% 0%,rgba(255,255,255,.22),transparent 70%),linear-gradient(135deg,var(--h),color-mix(in srgb,var(--h) 55%,#1e1b4b))}.hero h2{font-size:clamp(24px,4vw,32px);line-height:1.2;color:#fff;border-radius:8px}.hero h2.reading{background:#ffffff2e;box-shadow:0 0 0 6px #ffffff2e}.hero-subject{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.9}.hero-meta{display:flex;flex-wrap:wrap;gap:6px;font-size:14.5px;opacity:.92}.hero-btn{background:#fff;color:var(--h);border-color:transparent;font-size:16px;padding:12px 22px;border-radius:999px;margin-top:6px;box-shadow:0 6px 18px -6px #00000059}.hero-btn:hover:not(:disabled){color:var(--h);filter:brightness(.97);border-color:transparent}:root[data-theme=dark] .hero-btn{color:color-mix(in srgb,var(--h) 70%,#000)}:root[data-theme=dark] .hero{background:linear-gradient(135deg,color-mix(in srgb,var(--h) 55%,#000),color-mix(in srgb,var(--h) 25%,#0d111a))}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .hero-btn{color:color-mix(in srgb,var(--h) 70%,#000)}:root:not([data-theme=light]) .hero{background:linear-gradient(135deg,color-mix(in srgb,var(--h) 55%,#000),color-mix(in srgb,var(--h) 25%,#0d111a))}}.summary.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.bullets{margin:0;padding:0;list-style:none;display:grid;gap:8px}.bullets li{position:relative;padding-left:26px}.bullets li:before{content:"";position:absolute;left:6px;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--accent)}.lesson{display:grid}.timeline{list-style:none;margin:0;padding:0;display:grid;gap:14px;position:relative}.timeline:before{content:"";position:absolute;left:17px;top:18px;bottom:18px;width:2px;background:var(--line)}.tstep{display:grid;grid-template-columns:36px 1fr;gap:14px;position:relative}.tdot{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font:600 15px var(--font-display);background:var(--surface);border:2px solid var(--line);color:var(--muted);z-index:1;transition:all .2s}.tcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;display:grid;gap:8px;box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s}.tstep.active .tdot{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 0 0 5px var(--accent-soft)}.tstep.active .tcard{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),var(--shadow)}.tstep.done .tdot{background:var(--ok-soft);color:var(--ok);border-color:var(--ok)}.step-head{display:flex;gap:10px;align-items:center;justify-content:space-between}.step-head h3{border-radius:6px}.sent{cursor:pointer;border-radius:5px;transition:background .2s,color .2s;box-decoration-break:clone;-webkit-box-decoration-break:clone}.sent:hover{background:var(--accent-soft)}.sent.reading,h3.reading{background:var(--mark);color:var(--mark-ink);box-shadow:0 0 0 3px var(--mark)}.faqs{display:grid;gap:8px}details{border:1px solid var(--line);border-radius:14px;padding:0;background:var(--surface);transition:border-color .15s}details[open]{border-color:var(--accent);background:var(--surface-2)}summary{cursor:pointer;font-weight:600;padding:12px 44px 12px 16px;list-style:none;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);font:600 20px var(--font-display);color:var(--accent);transition:transform .2s}details[open] summary:after{transform:translateY(-50%) rotate(45deg)}details .ans{padding:0 16px 14px;display:grid;gap:6px}.pageref{font-size:13px;color:var(--muted)}.answer{border-radius:14px;padding:14px 16px;background:var(--accent-soft);display:grid;gap:6px;border:1px solid color-mix(in srgb,var(--accent) 25%,transparent)}.answer.faq{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 25%,transparent)}.ask{border-top:4px solid var(--accent)}.empty{text-align:center;padding:36px 14px;color:var(--muted);justify-items:center}.empty-icon{font-size:40px}.player-spacer{height:70px}.player{position:fixed;left:50%;bottom:14px;transform:translate(-50%);z-index:10;width:min(880px,calc(100% - 24px));background:color-mix(in srgb,var(--surface) 92%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 40px -14px #141b2d59;overflow:hidden}.player-progress{height:4px;background:var(--line)}.player-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .4s}.player-row{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;padding:10px 14px}.player-now{display:grid;line-height:1.3;min-width:0}.player-now strong{font:600 15px var(--font-display)}.player-now span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-controls{display:flex;gap:6px;align-items:center}.pbtn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:15px;cursor:pointer;display:grid;place-items:center;transition:transform .08s,border-color .15s,color .15s}.pbtn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.pbtn:active:not(:disabled){transform:scale(.95)}.pbtn:disabled{opacity:.4;cursor:not-allowed}.pbtn.main{width:52px;height:52px;font-size:18px;border:0;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 6px 16px -6px var(--accent)}.pbtn.main:hover{color:#fff;filter:brightness(1.08)}.player-opts{display:flex;gap:10px;align-items:center;justify-content:flex-end}.player-opts select{min-width:0;padding:6px 8px;border-radius:9px;font-size:14px}.follow{display:flex;gap:6px;align-items:center;font-size:13.5px;color:var(--muted);white-space:nowrap;cursor:pointer}@media (max-width: 640px){.player-row{grid-template-columns:1fr auto}.player-opts{grid-column:1 / -1;justify-content:space-between}.player-spacer{height:130px}}@media (max-width: 420px){.card{padding:15px}.hero{padding:20px 18px}.brand p{display:none}}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}.rich p.callout{padding:10px 14px;border-radius:12px;border-left:4px solid}.rich p.callout.example{background:var(--ok-soft);border-color:var(--ok)}.rich p.callout.watch{background:var(--warn-soft);border-color:var(--warn)}.preview p.callout{margin:6px 0}.terms{margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}.term{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:10px 14px}.term dt{font:600 15.5px var(--font-display);color:var(--accent)}.term dd{margin:2px 0 0;font-size:15px}.term-input{flex:0 1 220px;font-weight:600}.quiz-opt{display:flex;gap:10px;align-items:center;min-height:44px}.switch{display:flex;gap:8px;align-items:center;color:var(--ink);font-weight:600;font-size:15px;cursor:pointer}.switch input{width:18px;height:18px;accent-color:var(--accent)}.opts-edit{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:8px}.opt-edit{display:flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:11px;padding:4px 8px;background:var(--surface-2)}.opt-edit.correct{border-color:var(--ok);background:var(--ok-soft)}.opt-edit input[type=radio]{accent-color:var(--ok);width:18px;height:18px;flex:none}.opt-edit input[type=text]{border:0;background:transparent;padding:6px 4px}.opt-edit input[type=text]:focus{box-shadow:none}.opt-letter{flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font:700 13px var(--font-display);background:var(--accent-soft);color:var(--accent)}.quiz{border-top:4px solid var(--accent-2)}.qlist{list-style:none;margin:0;padding:0;display:grid;gap:14px}.qcard{border:1px solid var(--line);border-radius:16px;padding:14px 16px;display:grid;gap:10px;background:var(--surface)}.qcard.right{border-color:var(--ok)}.qcard.wrong{border-color:var(--bad)}.qtext{display:flex;gap:10px;align-items:baseline;font-weight:600;font-size:16.5px}.qnum{flex:none;font:600 14px var(--font-display);color:var(--accent)}.qopts{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px}.qopt{display:flex;gap:10px;align-items:center;text-align:left;font:inherit;color:var(--ink);cursor:pointer;padding:10px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-2);transition:border-color .15s,background .15s}.qopt:hover:not(:disabled){border-color:var(--accent)}.qopt.chosen{border-color:var(--accent);background:var(--accent-soft)}.qopt.chosen .opt-letter{background:var(--accent);color:#fff}.qopt.is-answer{border-color:var(--ok);background:var(--ok-soft)}.qopt.is-answer .opt-letter{background:var(--ok);color:#fff}.qopt.is-wrong{border-color:var(--bad);background:var(--bad-soft)}.qopt.is-wrong .opt-letter{background:var(--bad);color:#fff}.qopt:disabled{cursor:default}.qexplain{font-size:15px;padding:10px 12px;border-radius:12px;background:var(--surface-2)}.qcard.right .qexplain strong{color:var(--ok)}.qcard.wrong .qexplain strong{color:var(--bad)}.score-banner{display:flex;flex-wrap:wrap;gap:14px 18px;align-items:center;padding:16px 18px;border-radius:16px}.score-banner>div:nth-child(2){flex:1 1 220px}.score-big{font:600 34px var(--font-display)}.score-ok{background:var(--ok-soft);color:var(--ok)}.score-warn{background:var(--warn-soft);color:var(--warn)}.score-bad{background:var(--bad-soft);color:var(--bad)}.chip.score-ok,.chip.score-warn,.chip.score-bad{border-color:transparent}.results{display:grid;gap:4px}.result-row{display:grid;grid-template-columns:minmax(90px,160px) 1fr auto minmax(120px,auto);gap:12px;align-items:center;padding:8px 4px;border-bottom:1px solid var(--line)}.result-row:last-child{border-bottom:0}.bar{height:8px;border-radius:99px;background:var(--line);overflow:hidden}.bar span{display:block;height:100%;border-radius:99px}.bar-ok{background:var(--ok)}.bar-warn{background:var(--warn)}.bar-bad{background:var(--bad)}@media (max-width: 560px){.result-row{grid-template-columns:1fr auto}.result-row .bar{grid-column:1 / -1;grid-row:2}}.theme-btn{width:38px;height:38px;padding:0;display:inline-grid;place-items:center;border-radius:999px}.theme-btn .icon{transition:transform .35s ease}.theme-btn:hover .icon{transform:rotate(-18deg)}html.theme-anim,html.theme-anim *{transition:background-color .3s ease,border-color .3s ease,color .3s ease!important}.tab-badge{display:inline-grid;place-items:center;min-width:18px;height:18px;padding:0 5px;margin-left:6px;border-radius:999px;background:var(--bad);color:#fff;font-size:11px;font-weight:800}.practice-intro h2{display:flex;align-items:center;gap:8px;margin:0 0 4px}.practice-list{display:grid;gap:8px}.practice-row,.practice-banner,.practice-cta{display:flex;align-items:center;gap:12px;width:100%;text-align:left}.practice-row{padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:inherit;cursor:pointer}.practice-row:hover{border-color:var(--accent)}.practice-row.done{opacity:.85}.practice-row .fl-title,.practice-banner .fl-title,.practice-cta .fl-title{flex:1;min-width:0}.practice-banner{border-left:4px solid var(--accent)}.practice-cta{flex-wrap:wrap}.practice-session{display:grid;gap:14px}.relearn{margin:6px 0 12px;padding:10px 12px;border-radius:10px;background:var(--surface-2)}.relearn summary{cursor:pointer;font-weight:700;display:flex;align-items:center;gap:6px}.relearn[open] summary{margin-bottom:8px}.chip.practice-weak{background:var(--warn-soft);color:var(--warn);border-color:transparent}.chip.practice-check{background:var(--ok-soft);color:var(--ok);border-color:transparent}.practice-moves{margin:6px 0 0;padding-left:18px}.practice-moves .up{color:var(--ok);font-weight:700}.practice-topics{list-style:none;padding:0;margin:8px 0;display:grid;gap:6px}.practice-topics li{display:flex;gap:8px;align-items:baseline}.practice-topics .topic-score{margin-left:auto}.practice-who{margin:6px 0 12px}.practice-who summary{cursor:pointer;font-weight:600}.link-btn{background:none;border:0;padding:0;color:var(--accent);font:inherit;font-weight:600;cursor:pointer;text-decoration:underline}@media (max-width: 560px){.practice-row,.practice-banner{flex-wrap:wrap}}@keyframes fadeUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@keyframes float{0%,to{transform:translate(0) scale(1)}50%{transform:translate(30px,-20px) scale(1.06)}}@keyframes bob{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-10px) rotate(4deg)}}@keyframes wave{0%,60%,to{transform:rotate(0)}10%,30%{transform:rotate(14deg)}20%{transform:rotate(-8deg)}}@keyframes slide{0%{transform:translate(-100%)}to{transform:translate(250%)}}@keyframes fall{0%{transform:translateY(-10vh) rotate(0);opacity:1}to{transform:translateY(105vh) rotate(720deg);opacity:.9}}.card,.tile,.tstep,.stat,.chcard,.feature,.hero,.greet,.qcard{animation:fadeUp .45s ease both}.icon{flex:none;vertical-align:-.15em}h2 .icon{vertical-align:-.2em;color:var(--accent);margin-right:4px}.bg-blobs{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;overflow:hidden;pointer-events:none}.bg-blobs span{position:absolute;border-radius:50%;filter:blur(70px);opacity:.45;animation:float 18s ease-in-out infinite}.bg-blobs span:nth-child(1){width:420px;height:420px;background:#c7d2fe;top:-120px;left:-100px}.bg-blobs span:nth-child(2){width:360px;height:360px;background:#fbcfe8;top:30%;right:-120px;animation-delay:-6s}.bg-blobs span:nth-child(3){width:380px;height:380px;background:#bbf7d0;bottom:-140px;left:30%;animation-delay:-12s;opacity:.35}:root[data-theme=dark] .bg-blobs span{opacity:.12}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .bg-blobs span{opacity:.12}}.grad-text{background:linear-gradient(120deg,var(--accent),var(--accent-2),#db2777);-webkit-background-clip:text;background-clip:text;color:transparent}.pill{display:inline-flex;gap:6px;align-items:center;font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);justify-self:start}.badge{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;margin-left:6px;border-radius:99px;background:var(--bad);color:#fff;font-size:12px;font-weight:700}.tabs button{display:inline-flex;align-items:center;gap:6px}.welcome{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center;padding:5vh 0 2vh}.welcome .login{margin:0}.welcome-pitch{display:grid;gap:18px}.welcome-title{font-size:clamp(30px,4.4vw,46px);line-height:1.12;letter-spacing:-.02em}.welcome-sub{margin:0;color:var(--muted);font-size:18px;max-width:34em}.features{display:grid;grid-template-columns:1fr 1fr;gap:12px}.feature{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:16px;background:color-mix(in srgb,var(--surface) 80%,transparent);border:1px solid var(--line);box-shadow:var(--shadow-sm)}.feature strong{display:block;font:600 15px var(--font-display)}.feature span:not(.feature-icon){font-size:13.5px;color:var(--muted)}.feature-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;flex:none}.fi-0{background:linear-gradient(135deg,#4f46e5,#7c3aed)}.fi-1{background:linear-gradient(135deg,#0ea5e9,#2563eb)}.fi-2{background:linear-gradient(135deg,#f59e0b,#ea580c)}.fi-3{background:linear-gradient(135deg,#16a34a,#0d9488)}@media (max-width: 820px){.welcome{grid-template-columns:1fr;gap:24px;padding-top:2vh}.welcome .login{order:-1}.welcome-title{font-size:28px}}@media (max-width: 480px){.features{grid-template-columns:1fr}.welcome-sub{font-size:16px}}.greet{display:flex;flex-wrap:wrap;gap:18px 24px;align-items:center;justify-content:space-between;padding:22px 24px;border-radius:22px;background:linear-gradient(120deg,color-mix(in srgb,var(--accent) 12%,var(--surface)),color-mix(in srgb,#db2777 10%,var(--surface)));border:1px solid var(--line);box-shadow:var(--shadow-sm)}.greet p{margin:4px 0 0;color:var(--muted)}.greet-eyebrow{font-size:14px;font-weight:700;color:var(--accent)}.greet-name{font-size:28px}.wave{display:inline-block;transform-origin:70% 70%;animation:wave 2.4s ease-in-out 1s 2}.greet-stats{display:flex;flex-wrap:wrap;gap:10px}.gstat{display:grid;justify-items:center;gap:2px;min-width:96px;padding:10px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}.gstat .icon{color:var(--accent)}.gstat strong{font:600 22px var(--font-display)}.gstat span{font-size:12.5px;color:var(--muted)}.tile{position:relative;overflow:hidden;gap:8px;padding:16px}.tile:after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;background:var(--hs);opacity:.9;z-index:0}.tile>*{position:relative;z-index:1}.tile-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--h);color:#fff;box-shadow:0 6px 14px -6px var(--h)}.tile-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:4px}.tile-badge{font-size:12px;font-weight:700;padding:2px 9px;border-radius:99px}.tile-badge.new{background:var(--accent-soft);color:var(--accent)}.hero{grid-template-columns:1fr auto;align-items:center;position:relative;overflow:hidden;padding:30px 28px}.hero-body{display:grid;gap:10px;position:relative;z-index:1}.hero-subject{display:inline-flex;gap:6px;align-items:center}.hero-meta{gap:8px 16px}.hero-meta span{display:inline-flex;gap:5px;align-items:center}.hero-actions{align-items:center;gap:16px}.hero-art{position:relative;width:190px;height:170px;display:grid;place-items:center;grid-column:2;grid-row:1}.hero-icon{color:#ffffffeb;animation:bob 6s ease-in-out infinite;filter:drop-shadow(0 10px 20px rgba(0,0,0,.25))}.orb{position:absolute;border-radius:50%;background:#ffffff29}.o1{width:160px;height:160px}.o2{width:46px;height:46px;top:4px;right:6px;background:#ffffff3d;animation:float 7s ease-in-out infinite}.o3{width:24px;height:24px;bottom:10px;left:14px;background:#ffffff4d;animation:float 9s ease-in-out infinite reverse}.hero-body{grid-column:1;grid-row:1}.ring{--p: 0;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;flex:none;background:conic-gradient(#fff calc(var(--p) * 1%),#ffffff40 0)}.ring span{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font:600 12.5px var(--font-display);background:color-mix(in srgb,var(--h) 70%,#1e1b4b);color:#fff}@media (max-width: 640px){.hero{grid-template-columns:1fr}.hero-art{position:absolute;right:-30px;top:-20px;opacity:.35;width:160px}}.score-ring{--p: 0;width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(currentColor calc(var(--p) * 1%),color-mix(in srgb,currentColor 18%,transparent) 0);flex:none}.score-ring span{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;background:var(--surface);font:600 20px var(--font-display)}.confetti{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:50;overflow:hidden}.confetti i{position:absolute;top:-20px;border-radius:2px;animation:fall linear forwards}.empty-art{width:84px;height:84px;border-radius:26px;display:grid;place-items:center;margin:0 auto 6px;color:var(--accent);background:var(--accent-soft)}.empty h3{color:var(--ink)}.drop-icon{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent)}.stat.hue-blue,.chcard.hue-blue{--h: var(--h-blue);--hs: var(--h-blue-soft)}.stat.hue-orange,.chcard.hue-orange{--h: var(--h-orange);--hs: var(--h-orange-soft)}.stat.hue-green,.chcard.hue-green{--h: var(--h-green);--hs: var(--h-green-soft)}.stat.hue-violet,.chcard.hue-violet{--h: var(--h-violet);--hs: var(--h-violet-soft)}.stat.hue-rose,.chcard.hue-rose{--h: var(--h-rose);--hs: var(--h-rose-soft)}.stat.hue-teal,.chcard.hue-teal{--h: var(--h-teal);--hs: var(--h-teal-soft)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{text-align:left;cursor:pointer;font:inherit;color:var(--ink);display:grid;gap:2px;padding:16px;border-radius:18px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .12s,box-shadow .15s}.stat:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.stat:after{content:"";position:absolute;right:-24px;bottom:-24px;width:90px;height:90px;border-radius:50%;background:var(--hs)}.stat>*{position:relative;z-index:1}.stat-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--hs);color:var(--h);margin-bottom:6px}.stat strong{font:600 28px var(--font-display);line-height:1.1}.stat>span:last-child{font-size:13.5px;color:var(--muted);font-weight:600}@media (max-width: 720px){.stats{grid-template-columns:repeat(2,1fr)}}.chcards{display:grid;gap:10px}.chcard{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:var(--surface-2);transition:border-color .15s,box-shadow .15s}.chcard:hover{border-color:color-mix(in srgb,var(--h) 45%,var(--line));box-shadow:var(--shadow-sm)}.chcard.st-draft{border-left:4px solid var(--warn)}.chcard.st-published{border-left:4px solid var(--ok)}.chcard.st-failed{border-left:4px solid var(--bad)}.chcard.st-generating{border-left:4px solid var(--accent)}.chcard-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--hs);color:var(--h)}.st-generating .chcard-icon{background:var(--accent-soft);color:var(--accent);animation:pulse 1.6s infinite}.chcard-body{display:grid;gap:4px;min-width:0}.chcard-top{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center}.chcard-top strong{font:600 16px var(--font-display)}.chcard-actions{display:flex;gap:6px}.indeterminate{height:5px;border-radius:99px;background:var(--line);overflow:hidden;margin:4px 0 2px}.indeterminate span{display:block;width:40%;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--accent-2));animation:slide 1.4s ease-in-out infinite}@media (max-width: 560px){.chcard{grid-template-columns:auto 1fr}.chcard-actions{grid-column:1 / -1;justify-content:flex-end}}@media (prefers-reduced-motion: reduce){.bg-blobs span,.hero-icon,.orb,.wave,.card,.tile,.tstep,.stat,.chcard,.feature,.hero,.greet,.qcard{animation:none!important}}.voice-tag{justify-self:start;font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:1px 8px;border-radius:99px;background:var(--surface-2);color:var(--muted);border:1px solid var(--line);margin:2px 0}.voice-tag.on{background:var(--ok-soft);color:var(--ok);border-color:transparent}.voice-status{display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:var(--accent)}.voice-status.ok{color:var(--ok)}.voice-status.bad{color:var(--bad)}.cam-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#080a14b8;display:grid;place-items:center;padding:16px}.cam-box{width:min(760px,100%);background:var(--surface);border-radius:var(--radius);padding:16px;display:grid;gap:12px;box-shadow:var(--shadow)}.cam-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px}.cam-view{position:relative;background:#000;border-radius:12px;overflow:hidden;aspect-ratio:4 / 3;display:grid;place-items:center}.cam-view video{width:100%;height:100%;object-fit:contain}.cam-view .status{margin:16px;text-align:center}.cam-view.flash:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#fff;opacity:.7}.cam-actions{flex-wrap:wrap;gap:8px}.cam-shutter{display:inline-flex;align-items:center;gap:8px}.drop .btn{display:inline-flex;align-items:center;gap:6px}.lvl-strong{--lv: var(--ok);--lvs: var(--ok-soft)}.lvl-getting{--lv: var(--warn);--lvs: var(--warn-soft)}.lvl-needs{--lv: var(--bad);--lvs: var(--bad-soft)}.lvl-none{--lv: var(--muted);--lvs: var(--surface-2)}.lvl-chip{font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;white-space:nowrap;color:var(--lv, var(--muted));background:var(--lvs, var(--surface-2));border:1px solid color-mix(in srgb,var(--lv, var(--line)) 30%,transparent)}.mbar{display:block;height:8px;min-width:60px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}.mbar>span{display:block;height:100%;border-radius:inherit;background:var(--lv, var(--accent));transition:width .6s ease}.lvl-dot{width:10px;height:10px;border-radius:50%;background:var(--lv);flex:none}.trend{font-size:12px;font-weight:700;margin-left:4px}.trend.up{color:var(--ok)}.trend.down{color:var(--bad)}.feedback{display:grid;gap:14px;margin:4px 0 18px}.feedback-summary{display:flex;gap:8px;align-items:flex-start;margin:0;padding:12px 14px;border-radius:12px;background:var(--accent-soft);color:var(--ink);font-weight:600}.feedback-summary .icon{color:var(--accent);flex:none;margin-top:3px}.topic-rows{list-style:none;margin:0;padding:0;display:grid;gap:10px}.topic-rows li{display:grid;grid-template-columns:minmax(0,1fr) minmax(80px,160px) minmax(64px,auto) auto;gap:12px;align-items:center}.topic-name{font-weight:600}.topic-score{font:600 14px var(--font-display);text-align:right;white-space:nowrap}@media (max-width: 620px){.topic-rows li{grid-template-columns:minmax(0,1fr) auto;row-gap:4px}.topic-rows .mbar{grid-column:1 / -1;grid-row:2}}.revise h3{margin:4px 0 8px;font-size:17px}.revise{display:grid;gap:10px}.revise-card{border:1px solid var(--line);border-left:4px solid var(--lv);border-radius:12px;padding:12px 14px;background:var(--surface-2);display:grid;gap:8px}.revise-miss{padding-left:2px}.revise-terms{display:flex;flex-wrap:wrap;gap:6px}.term-pill{font-size:14px;padding:6px 12px;border-radius:10px;background:var(--accent-soft);display:grid;gap:1px}.understanding header{align-items:flex-start}.understanding .topic-rows{margin-top:12px}.dash{display:grid;gap:14px}.focus-next h3{display:flex;gap:8px;align-items:center;margin:0 0 8px;font-size:17px}.focus-next h3 .icon{color:var(--accent)}.focus-next ol{list-style:none;margin:0;padding:0;display:grid;gap:6px}.focus-item,.chapter-line{width:100%;display:flex;gap:10px;align-items:center;text-align:left;font:inherit;color:inherit;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;cursor:pointer}.focus-item:hover,.chapter-line:hover{border-color:var(--accent)}.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(320px,100%),1fr));gap:14px}.sc-head{display:flex;gap:12px;align-items:center;margin-bottom:12px}.sc-title,.fl-title{flex:1;min-width:0}.subject-card .score-ring.mini{width:54px;height:54px;color:var(--h)}.subject-card .score-ring.mini span{width:42px;height:42px;font-size:13px;color:var(--ink)}.subject-chapters{list-style:none;margin:0;padding:0;display:grid;gap:6px}.chapter-line{background:transparent;flex-wrap:wrap;row-gap:6px}.chapter-line .fl-title{flex-basis:100%;font-weight:600}.chapter-line .mbar{flex:1}.chapter-line .topic-score{min-width:40px}.quiz-meta{align-items:flex-end}.tcard.flash-focus{box-shadow:0 0 0 3px var(--accent);transition:box-shadow .3s ease}.dash-page{display:grid;gap:16px}.dash-filters{align-items:flex-end}.inline-field select{min-width:200px}.crumbs{display:flex;flex-wrap:wrap;gap:4px;align-items:center;font-size:15px}.crumb{background:none;border:0;padding:2px 4px;font:inherit;color:var(--accent);cursor:pointer;border-radius:6px}.crumb:hover{text-decoration:underline}.crumb-sep{color:var(--muted);margin:0 2px}.dash-hero{display:flex;gap:16px;align-items:center}.dash-hero-icon{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;flex:none;color:#fff;background:linear-gradient(135deg,var(--h, var(--accent)),color-mix(in srgb,var(--h, var(--accent-2)) 70%,var(--accent-2)))}.dash-hero-body{display:grid;gap:2px;min-width:0}.dash-hero-num{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px}.dash-hero-num strong{font:700 48px/1.05 var(--font-display);letter-spacing:-.02em}.dash-hero p{margin:2px 0 0}.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.kpi{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:grid;gap:2px;box-shadow:var(--shadow-sm)}.kpi strong{font:700 26px var(--font-display)}.kpi span{color:var(--muted);font-size:14px}.chart-card{display:grid;gap:12px}.chart-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:8px}.chart-head h3{margin:0;font-size:18px}.sbars{position:relative;display:grid;gap:4px}.sbar-row.sbars-scale{padding-top:0;padding-bottom:0;font-size:11.5px;color:var(--muted)}.scale-track{position:relative;height:14px}.scale-track span{position:absolute;transform:translate(-50%)}.sbar-row{display:grid;grid-template-columns:min(38%,300px) minmax(80px,1fr) 64px 120px 22px;gap:12px;align-items:center;width:100%;text-align:left;font:inherit;color:inherit;background:none;border:0;border-radius:10px;padding:8px 6px}.sbar-row.link{cursor:pointer}.sbar-row.link:hover,.sbar-row.link:focus-visible{background:var(--surface-2);outline:none;box-shadow:inset 0 0 0 1px var(--line)}.sbar-label{display:grid;min-width:0}.sbar-label strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}.sbar-track{position:relative;height:12px;border-radius:4px;background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--line)}.sbar-track .band{position:absolute;top:-4px;bottom:-4px;width:0;border-left:1.5px dashed color-mix(in srgb,var(--muted) 55%,transparent)}.sbar-track .b50{left:50%}.sbar-track .b80{left:80%}.sbar-fill{position:absolute;inset:0 auto 0 0;border-radius:4px;background:var(--accent);transition:width .6s ease}.sbar-value{font:600 15px var(--font-display);text-align:right}.sbar-chip{display:flex}.sbar-go{color:var(--muted);font-size:20px}@media (max-width: 720px){.sbars-scale{display:none}.sbar-row{grid-template-columns:minmax(0,1fr) 52px auto 14px;row-gap:6px}.sbar-label{grid-column:1 / -1}.sbar-track{grid-column:1}}.chart-tip{position:absolute;z-index:4;pointer-events:none;display:grid;gap:2px;min-width:160px;max-width:220px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:8px 10px;box-shadow:var(--shadow);font-size:13.5px}.trend-wrap{position:relative;width:100%;overflow:hidden}.trend-wrap svg{display:block}.trend-wrap .grid{stroke:var(--line);stroke-width:1}.trend-wrap .band-line{stroke-dasharray:4 4}.trend-wrap .axis{stroke:color-mix(in srgb,var(--muted) 60%,transparent);stroke-width:1}.trend-wrap .tick{fill:var(--muted);font-size:11.5px;font-family:var(--font-body)}.trend-wrap .trend-line{fill:none;stroke:var(--accent);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.trend-wrap .trend-dot{fill:var(--accent);stroke:var(--surface);stroke-width:2}.trend-wrap .crosshair{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 3}.data-table{width:100%;border-collapse:collapse;font-size:15px}.data-table th,.data-table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}.data-table th{color:var(--muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.04em}.offline-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:10px 14px;border-radius:12px;background:var(--warn-soft);color:var(--ink);border:1px solid color-mix(in srgb,var(--warn) 35%,transparent);font-weight:600}.offline-bar.back{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 30%,transparent)}.offline-dot{width:10px;height:10px;border-radius:50%;background:var(--warn);flex:none}.offline-bar.back .offline-dot{background:var(--accent)}.grow-1{flex:1;min-width:0}.offline-failed{display:block;font-weight:400;color:var(--bad);margin-top:4px}.offline-note{display:flex;gap:8px;align-items:flex-start}.marked-note{display:flex;flex-wrap:wrap;gap:10px;align-items:center;border-left:4px solid var(--ok)}.marked-note>.icon{color:var(--ok)}.tile{position:relative}.tile-saved{position:absolute;top:12px;right:12px;display:inline-flex;gap:4px;align-items:center;font-size:12px;font-weight:700;color:var(--ok);background:var(--ok-soft);padding:2px 8px;border-radius:999px}.tile.unavailable{opacity:.55}.hero-ghost{background:#ffffff29;color:#fff;border-color:#ffffff73;display:inline-flex;gap:6px;align-items:center}.hero-ghost:hover:not(:disabled){background:#ffffff42;color:#fff}.dl-saved{display:inline-flex;gap:8px;align-items:center;color:#fff;font-weight:600;font-size:14.5px}.dl-msg{color:#fff;font-size:14px;opacity:.9}.score-banner.queued{background:var(--accent-soft);color:var(--ink)}.score-banner.queued>.icon{color:var(--accent);flex:none}.crumbs-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.back-btn{font-weight:700}.kpi{font:inherit;color:inherit;text-align:left}.kpi.link{cursor:pointer;transition:border-color .15s ease,transform .15s ease}.kpi.link:hover,.kpi.link:focus-visible{border-color:var(--accent);transform:translateY(-1px);outline:none}.kpi:disabled{cursor:default}.kpi-go{color:var(--accent);font-weight:700}.filter-chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 6px}.fchip{font:inherit;font-size:14px;font-weight:600;padding:5px 12px;border-radius:999px;cursor:pointer;border:1px solid var(--line);background:var(--surface-2);color:var(--ink)}.fchip[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}.fchip-n{font-size:12.5px;opacity:.75;margin-left:2px}.stat[aria-pressed=true]{border-color:var(--h);box-shadow:0 0 0 2px color-mix(in srgb,var(--h) 35%,transparent),var(--shadow-sm)}.dash-note{margin:-6px 0 0}.gstat{font:inherit;color:inherit;cursor:pointer;transition:transform .15s ease,border-color .15s ease}.gstat:hover,.gstat:focus-visible{transform:translateY(-2px);border-color:var(--accent);outline:none}.report-panel{display:grid;gap:10px}.report-panel textarea{width:100%;font:inherit;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);resize:vertical}.dash-note-row{align-items:center;margin-top:-6px}.dash-note-row .dash-note{margin:0}.print-root{display:none}@media print{@page{size:A4;margin:12mm}body.printing>*:not(.print-root){display:none!important}html:has(body.printing),body.printing{background:#fff!important;color-scheme:light}body.printing .print-root{display:block}body.printing .print-root,body.printing .print-root *{visibility:visible}}.report{--rc-ink: #141b2d;--rc-muted: #5b6678;--rc-line: #dde3ee;--rc-accent: #4f46e5;--rc-soft: #eef0ff;color:var(--rc-ink);background:#fff;font-family:var(--font-body);font-size:12px;line-height:1.4;-webkit-print-color-adjust:exact;print-color-adjust:exact;display:grid;gap:10px}.report h2{font:600 14px var(--font-display);margin:0 0 6px;color:var(--rc-ink)}.rc-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;border-bottom:2px solid var(--rc-accent);padding-bottom:10px}.rc-brand{display:flex;gap:10px;align-items:center}.rc-brand strong{display:block;font:700 18px var(--font-display)}.rc-brand span{color:var(--rc-muted)}.rc-logo{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#4f46e5,#7c3aed)}.rc-who{display:grid;grid-template-columns:auto auto auto;gap:4px 18px;margin:0}.rc-who dt{color:var(--rc-muted);font-size:11px;text-transform:uppercase;letter-spacing:.05em}.rc-who dd{margin:0;font-weight:700;font-size:14px}.rc-overall{display:flex;gap:24px;align-items:center;background:var(--rc-soft);border-radius:10px;padding:12px 16px}.rc-big strong{display:block;font:700 38px/1 var(--font-display);color:var(--rc-accent)}.rc-big span{color:var(--rc-muted)}.rc-kpis{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,auto);gap:4px 24px}.rc-kpis strong{font-family:var(--font-display)}.rc-table{width:100%;border-collapse:collapse}.rc-table th{text-align:left;color:var(--rc-muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--rc-line);padding:4px 6px}.rc-table td{padding:3px 6px;border-bottom:1px solid var(--rc-line)}.rc-table tr{break-inside:avoid}.rc-subject td{font-weight:700;background:#f8fafd}.rc-indent{padding-left:18px!important}.rc-barcol{width:120px}.rc-bar{display:block;height:7px;border-radius:4px;background:#eef1f6;overflow:hidden}.rc-bar>span{display:block;height:100%;background:var(--rc-accent)}.rc-two{display:grid;grid-template-columns:1fr 1fr;gap:18px;break-inside:avoid}.rc-list{margin:0;padding-left:18px;display:grid;gap:2px}.rc-small{color:var(--rc-muted);margin:4px 0 0}.report .trend-wrap .grid{stroke:var(--rc-line)}.report .trend-wrap .tick{fill:var(--rc-muted)}.report .trend-wrap .trend-line{stroke:var(--rc-accent)}.report .trend-wrap .trend-dot{fill:var(--rc-accent);stroke:#fff}.rc-trend,.rc-remarks{break-inside:avoid}.rc-lines{display:grid;gap:16px;padding-top:8px}.rc-lines span{border-bottom:1px solid var(--rc-line)}.rc-sign{display:flex;justify-content:space-between;gap:40px;margin-top:22px;color:var(--rc-muted)}.rc-sign span{flex:1;border-top:1px solid var(--rc-ink);padding-top:4px}.rc-foot{color:var(--rc-muted);font-size:10.5px;border-top:1px solid var(--rc-line);padding-top:6px}.wrap.wide{max-width:1200px}.mono{font-family:ui-monospace,Cascadia Mono,Consolas,monospace;font-size:.92em;letter-spacing:.01em}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.tabs.scroll{overflow-x:auto;flex-wrap:nowrap;max-width:100%}.tabs.scroll button{white-space:nowrap}.stats.six{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.toolbar{display:flex;flex-wrap:wrap;gap:8px 10px;align-items:end}.toolbar input[type=search],.toolbar input[type=text]{width:auto;min-width:200px;flex:1 1 220px}input[type=search],input[type=email],input[type=url],input[type=tel],input[type=number],input[type=month]{font:inherit;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:11px;padding:10px 12px;width:100%}input[type=search]:focus,input[type=email]:focus,input[type=url]:focus,input[type=tel]:focus,input[type=number]:focus,input[type=month]:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px}table.data{width:100%;border-collapse:collapse;font-size:14.5px}table.data th,table.data td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}table.data th{font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:var(--surface-2);position:sticky;top:0}table.data tbody tr:last-child td{border-bottom:none}table.data tbody tr:hover td{background:color-mix(in srgb,var(--accent-soft) 45%,transparent)}table.data td.actions{white-space:nowrap;text-align:right}table.data td.actions .btn+.btn{margin-left:6px}table.data tr.row-error td{background:var(--bad-soft)}table.data tr.row-warn td{background:var(--warn-soft)}.num{font-variant-numeric:tabular-nums}.chip.ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}.chip.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}.chip.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}.chip.info{background:var(--accent-soft);color:var(--accent);border-color:transparent}.chips{display:flex;flex-wrap:wrap;gap:5px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#080a148c;display:grid;place-items:center;padding:16px;overflow-y:auto}.modal-box{width:min(520px,100%);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-rows:auto minmax(0,1fr) auto;max-height:calc(100dvh - 32px)}.modal-box.wide{width:min(760px,100%)}.modal-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:18px 20px 6px}.modal-body{padding:8px 20px 12px;display:grid;gap:12px;overflow-y:auto}.modal-foot{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;padding:12px 20px 18px;border-top:1px solid var(--line)}.conflict-who{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;padding:12px 14px;border-radius:12px;background:var(--warn-soft)}.choices{border:none;padding:0;margin:0;display:grid;gap:8px}.choice{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:12px;cursor:pointer}.choice:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}.choice input{margin-top:4px;accent-color:var(--accent)}.secret-box{display:grid;gap:6px;padding:14px;border-radius:14px;border:1px dashed var(--accent);background:var(--accent-soft)}.secret-box .pw{font:600 22px ui-monospace,Consolas,monospace;letter-spacing:.06em;color:var(--ink)}.grade-list{display:grid;gap:8px}.grade-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:12px}.grade-row.archived,.sec-pill.archived,.subj-row.archived{opacity:.55}.grade-row>strong{min-width:84px}.sec-pill{display:inline-flex;align-items:center;gap:4px;padding:3px 4px 3px 10px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);font-weight:600;font-size:14px}.sec-pill button{border:none;background:none;color:var(--muted);cursor:pointer;padding:0 4px;font-size:15px;line-height:1;border-radius:50%}.sec-pill button:hover{color:var(--bad)}.cols-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:20px;align-items:start}.subj-row{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line)}.subj-row:last-child{border-bottom:none}table.matrix td,table.matrix th{text-align:center}table.matrix th:first-child,table.matrix td:first-child{text-align:left}table.matrix input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.cell-btn{display:grid;gap:2px;width:100%;min-width:120px;text-align:left;border:1px solid var(--line);border-radius:10px;padding:6px 8px;background:var(--surface);color:var(--ink);cursor:pointer;font:inherit;font-size:13.5px}.cell-btn:hover{border-color:var(--accent)}.cell-btn.gap{border-style:dashed;color:var(--warn);background:var(--warn-soft)}.cell-btn.multi{border-color:var(--warn)}.ticket{border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:grid;gap:10px}.ticket.conflict{border-color:var(--warn)}.diff{display:grid;grid-template-columns:max-content 1fr;gap:4px 12px;font-size:14.5px}.diff .add{color:var(--ok);font-weight:600}.diff .remove{color:var(--bad);font-weight:600;text-decoration:line-through}.steps-bar{display:flex;flex-wrap:wrap;gap:6px;counter-reset:step}.steps-bar span{padding:5px 12px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--muted);background:var(--surface-2);border:1px solid var(--line)}.steps-bar span.on{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent}.map-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px 14px}.map-grid select{width:100%}@media (max-width: 640px){table.data{font-size:13.5px}.toolbar>*{flex:1 1 100%}}.pw-form,.pw-done{display:grid;gap:12px}.link-btn{justify-self:start;padding-left:0;color:var(--accent)}.code-input{font:600 22px ui-monospace,Consolas,monospace;letter-spacing:.35em;max-width:220px}.status.acting{position:sticky;top:calc(env(safe-area-inset-top,0px) + var(--header-h, 66px));z-index:4;background:var(--warn-soft);color:var(--ink);border:1px solid var(--warn)}.answer-pics{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start;margin-top:8px}.answer-pic{margin:0;display:grid;gap:6px;justify-items:start}.answer-pic img{display:block;max-width:min(100%,420px);max-height:320px;border-radius:10px;border:1px solid var(--line);background:#fff}.repeat-note{margin-left:8px;vertical-align:2px}label.btn.disabled{opacity:.5;pointer-events:none}.top.has-centre{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}.top.has-centre .who{justify-self:end;flex-wrap:wrap;justify-content:flex-end}.top-centre{display:grid;justify-items:center;text-align:center;line-height:1.2;min-width:0}.top-centre strong{font:600 18px var(--font-display);color:var(--ink);letter-spacing:-.01em;overflow-wrap:anywhere}.top-centre-kicker{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}@media (max-width: 860px){.top.has-centre{grid-template-columns:1fr auto}.top.has-centre .top-centre{grid-column:1 / -1;grid-row:2}}.sec-setup{display:grid;gap:10px;padding:14px;margin-bottom:14px;border:1px dashed var(--line);border-radius:14px;background:var(--surface-2)}.sec-setup h3{margin:0;font-size:16px}.sec-setup .presets{gap:6px;align-self:flex-end}.sec-preview{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.sec-pill.bad{border-color:var(--bad);color:var(--bad)}.grade-picks{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center}.grade-picks legend{padding:0;margin-bottom:4px}.grade-pick{display:inline-flex;gap:4px;align-items:center;font-weight:600}.demo-banner{background:var(--accent-soft);color:var(--ink);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent)}.demo-banner strong{color:var(--accent);letter-spacing:.08em}.demo-accounts{display:grid;gap:8px;padding:12px;border-radius:12px;border:1px dashed var(--accent);background:var(--accent-soft)}.demo-list{list-style:none;margin:0;padding:0;display:grid;gap:4px;max-height:220px;overflow-y:auto}.demo-pick{width:100%;display:grid;grid-template-columns:124px 1fr;gap:0 10px;text-align:left;font:inherit;color:inherit;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:6px 10px;cursor:pointer}.demo-pick:hover,.demo-pick:focus-visible{border-color:var(--accent);outline:none}.demo-pick .muted{grid-column:2}.demo-name{font-weight:600}.school-form{display:grid;gap:14px}.school-form fieldset{border:1px solid var(--line);border-radius:12px;padding:12px 14px 14px;margin:0;display:grid;gap:10px}.school-form legend{padding:0 6px;font-weight:700;font-size:14px;color:var(--ink)}.school-form textarea{resize:vertical}.form-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.form-grid.three{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.school-branch{margin-left:6px;vertical-align:1px}.school-address{max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.school-search{max-width:420px;margin-bottom:10px}.schools-table td.actions{white-space:normal;width:1%}.schools-table td.actions .btn{display:flex;justify-content:center;width:100%;min-width:118px;margin:0 0 6px}.schools-table td.actions .btn+.btn{margin-left:0}.schools-table td.actions .btn:last-child{margin-bottom:0}.plan{border:1px solid var(--line);border-radius:14px;padding:12px 14px 14px;margin:0 0 14px;display:grid;gap:10px}.plan legend{padding:0 6px;font-weight:700}.plan-step{margin:4px 0 10px;font-size:16px}.pages-row .field{max-width:160px}.lib-hit{display:grid;gap:6px;padding:12px;border-radius:12px;border:1px solid var(--ok);background:var(--ok-soft, var(--surface-2))}.lib-others{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.lib-chip{margin-left:6px}.open-for{color:var(--accent);font-weight:600;margin-top:2px}.open-sections{gap:10px;align-items:center;padding:8px 12px;border-radius:10px;background:var(--accent-soft);margin:6px 0}.section-picks{display:flex;flex-wrap:wrap;gap:8px 18px;margin:8px 0}.section-pick{display:inline-flex;gap:6px;align-items:center;font-weight:600;font-size:16px;min-height:40px}.section-pick input{width:20px;height:20px}.schools-table td{vertical-align:top}.schools-table .school-contact,.schools-table .school-contact a{overflow-wrap:anywhere;word-break:break-word}.schools-table .school-contact{max-width:240px}.schools-table .school-people{white-space:nowrap}.schools-table .school-address{max-width:200px}@media (max-width: 900px){.table-wrap:has(>.schools-table){border:0;overflow:visible}.schools-table,.schools-table tbody,.schools-table tr,.schools-table td{display:block;width:100%}.schools-table thead{display:none}.schools-table tr{border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin-bottom:12px;background:var(--surface)}.schools-table td{border:0;padding:4px 0;max-width:none}.schools-table td[data-label]:before{content:attr(data-label);display:block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}.schools-table .school-people div{display:inline}.schools-table .school-people div+div:before{content:" · "}.schools-table .school-address{max-width:none;white-space:normal}.schools-table td.actions{display:flex;flex-wrap:wrap;gap:8px;width:100%;padding-top:10px}.schools-table td.actions .btn{width:auto;min-width:0;flex:1 1 130px;margin:0}table.data.schools-table td.actions .btn+.btn{margin:0}}.continue-hint{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:12px;background:var(--accent-soft)}.index-row{align-items:flex-end;gap:10px}.index-row select{width:100%;min-width:0}.file-pages{max-width:520px;margin:8px 0}.index-add{display:grid;grid-template-columns:90px minmax(0,1fr) 80px 80px;gap:8px;align-items:end}@media (max-width: 560px){.index-add{grid-template-columns:1fr 1fr}.index-add .grow{grid-column:1 / -1}}.part-tabs{position:sticky;top:calc(env(safe-area-inset-top,0px) + var(--header-h, 66px) + 4px);z-index:5}.part-tabs .part-n{font-weight:500;opacity:.7;margin-left:2px}.player.player-hidden{display:none}.next-part{justify-self:center;margin:4px auto 0}.bybook{display:grid;gap:18px}.bybook-class{display:grid;gap:10px}.bybook-class h3{margin:0;font-size:16px}.bybook-chapter{display:grid;gap:8px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.bybook-bar{position:relative;height:8px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}.bybook-bar span{position:absolute;top:0;bottom:0;background:var(--accent)}.bybook-parts{display:flex;flex-wrap:wrap;gap:8px}.bybook-part{display:grid;gap:2px;text-align:left;font:inherit;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-left:3px solid var(--muted);border-radius:10px;padding:6px 10px;cursor:pointer;min-height:44px}.bybook-part.st-published{border-left-color:var(--ok)}.bybook-part.st-draft{border-left-color:var(--warn)}.bybook-part.st-failed{border-left-color:var(--bad)}.bybook-part:disabled{cursor:default;opacity:.7}.chat{display:grid;gap:12px;margin:4px 0 12px}.chat-turn{display:grid;gap:6px}.bubble{margin:0;padding:10px 14px;border-radius:16px;max-width:min(560px,88%);line-height:1.5}.bubble.me{justify-self:end;background:var(--accent);color:var(--accent-ink);border-bottom-right-radius:6px}.bubble.guru{justify-self:start;background:var(--surface-2);border:1px solid var(--line);border-bottom-left-radius:6px}.bubble.guru .tag{display:inline-block;margin-bottom:4px}:root{--fs-xs: 12.5px;--fs-sm: 14px;--fs-md: 16px;--fs-lg: 18px;--fs-xl: 22px;--fs-2xl: 28px;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--r-sm: 10px;--r-md: 14px;--r-lg: 18px;--r-xl: 24px;--tap: 44px;--header-h: 80px;--player-h: 78px;--glass: color-mix(in srgb, var(--surface) 74%, transparent);--glass-strong: color-mix(in srgb, var(--surface) 90%, transparent);--glass-line: color-mix(in srgb, var(--line) 75%, transparent);--clay: inset 0 1px 0 rgba(255, 255, 255, .85), 0 10px 24px -16px rgba(42, 36, 130, .38), 0 2px 6px -2px rgba(20, 27, 45, .08);--clay-up: inset 0 1px 0 rgba(255, 255, 255, .9), 0 16px 30px -16px rgba(42, 36, 130, .45), 0 3px 8px -3px rgba(20, 27, 45, .1)}:root[data-theme=dark]{--clay: inset 0 1px 0 rgba(255, 255, 255, .05), 0 12px 28px -16px rgba(0, 0, 0, .75);--clay-up: inset 0 1px 0 rgba(255, 255, 255, .07), 0 18px 34px -16px rgba(0, 0, 0, .85)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--clay: inset 0 1px 0 rgba(255, 255, 255, .05), 0 12px 28px -16px rgba(0, 0, 0, .75);--clay-up: inset 0 1px 0 rgba(255, 255, 255, .07), 0 18px 34px -16px rgba(0, 0, 0, .85)}}@media (max-width: 640px){:root{--header-h: 62px;--player-h: 66px}}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 64px)}*{scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--muted) 45%,transparent) transparent}::-webkit-scrollbar{width:10px;height:8px}::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--muted) 40%,transparent);border-radius:99px;border:2px solid transparent;background-clip:content-box}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}.top{background:var(--glass);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-bottom-color:var(--glass-line);min-height:64px}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.top{background:var(--surface)}}.who-text{display:grid;line-height:1.25;text-align:right}.who-text strong{color:var(--ink);font-size:var(--fs-sm)}.icon-btn{min-height:36px}@media (max-width: 640px){.top{flex-wrap:nowrap;padding:10px 16px;gap:10px}.brand{min-width:0;gap:10px}.brand h1{font-size:17px;white-space:nowrap}.logo{width:34px;height:34px;border-radius:10px}.logo svg{width:19px;height:19px}.who{gap:6px;flex:none}.who-text,.btn-label{display:none}.icon-btn{width:38px;height:38px;padding:0;justify-content:center;border-radius:999px}.theme-btn{width:38px;height:38px}}.tabs{flex-wrap:nowrap;overflow-x:auto;max-width:100%;scroll-snap-type:x proximity;scrollbar-width:none;overscroll-behavior-x:contain}.tabs::-webkit-scrollbar{display:none}.tabs button{white-space:nowrap;scroll-snap-align:start;min-height:40px;flex:none}.role-teacher>.tabs,.role-admin>.tabs{position:sticky;top:calc(var(--header-h) + 8px);z-index:4;background:var(--glass-strong);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}@media (max-width: 640px){.tabs,.chapter-nav{-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}}.status:not(.offline-note):not(.demo-banner){position:relative;padding-left:40px}.status:not(.offline-note):not(.demo-banner):before{content:"i";position:absolute;left:13px;top:12px;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;font:800 11.5px/1 var(--font-body);color:#fff;background:var(--accent)}.status.err:before{content:"!"!important;background:var(--bad)!important}.status.warn:before{content:"!"!important;background:var(--warn)!important}.status.ok:before{content:"✓"!important;background:var(--ok)!important}.status.err,.status.warn,.status.ok{border:1px solid color-mix(in srgb,currentColor 22%,transparent)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-card{display:grid;gap:12px;padding:20px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line)}.sk{display:block;height:12px;border-radius:6px;background:linear-gradient(90deg,var(--surface-2) 25%,color-mix(in srgb,var(--line) 80%,var(--surface)) 50%,var(--surface-2) 75%);background-size:200% 100%;animation:shimmer 1.4s ease-in-out infinite}.sk-title{height:18px;width:40%}select,input[type=text],input[type=password],input[type=search],input[type=email],input[type=tel],input[type=date],input[type=number],input[type=month]{min-height:var(--tap)}input[type=date]{font:inherit;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:11px;padding:8px 12px}.section-title{display:flex;align-items:center;gap:10px}.section-title:before{content:"";width:18px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}.doubt,.ticket,.grade-row{background:var(--surface);border-left:3px solid color-mix(in srgb,var(--accent) 45%,var(--line))}.ticket.conflict{border-left-color:var(--warn)}.doubt:hover,.ticket:hover,.grade-row:hover,.practice-row:hover,.focus-item:hover{box-shadow:var(--shadow-sm)}.focus-item,.chapter-line,.practice-row{transition:border-color .15s,box-shadow .15s,transform .12s}.fl-meta,.topic-meta{display:block;margin-top:1px}.term{border-left:3px solid color-mix(in srgb,var(--accent) 55%,transparent)}details{transition:border-color .15s,box-shadow .15s}details:hover:not([open]){border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}table.data td,table.data th,.data-table td,.data-table th{vertical-align:middle}.data-table tbody tr:hover td{background:color-mix(in srgb,var(--accent-soft) 45%,transparent)}.data-table td{font-variant-numeric:tabular-nums}.card>.data-table,.practice-who .data-table{display:block;overflow-x:auto}.modal-overlay{backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.modal-box{border:1px solid var(--line)}.submit-bar{position:sticky;bottom:12px;z-index:3;display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;justify-content:space-between;padding:10px 12px 10px 16px;border-radius:var(--r-md);border:1px solid var(--glass-line);background:var(--glass-strong);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow)}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.submit-bar,.chapter-nav{background:var(--surface)}}.submit-bar.above-player{bottom:calc(var(--player-h) + 22px)}.submit-count{display:grid;gap:5px;min-width:140px;flex:1 1 140px}.submit-progress{display:block;height:6px;border-radius:99px;background:var(--line);overflow:hidden;max-width:240px}.submit-progress i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .3s ease}.back-to-top{position:fixed;right:16px;bottom:22px;z-index:9;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--glass-line);background:var(--glass);color:var(--accent);cursor:pointer;box-shadow:var(--shadow);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);animation:fadeUp .25s ease both}body:has(.player) .back-to-top{bottom:calc(var(--player-h) + 30px)}body:has(.submit-bar) .back-to-top{bottom:calc(var(--player-h) + 96px)}.role-student .card,.role-student .tcard,.role-student .gstat,.role-student .skeleton-card{box-shadow:var(--clay);border-color:color-mix(in srgb,var(--line) 70%,transparent)}.role-student .card{border-radius:var(--r-xl)}.role-student .tile{box-shadow:var(--clay);border-radius:20px}.role-student .tile:hover{box-shadow:var(--clay-up)}.role-student .tile:active{transform:translateY(0) scale(.99)}.role-student .greet{box-shadow:var(--clay);border-color:transparent}.role-student .tabs{box-shadow:var(--clay)}@media (max-width: 640px){.greet{padding:18px;gap:14px}.greet-name{font-size:24px}.greet-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;gap:8px}.gstat{min-width:0;padding:10px 6px}.gstat strong{font-size:20px}}.chapter-nav{position:sticky;top:calc(var(--header-h) + 8px);z-index:4;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:6px;border-radius:999px;border:1px solid var(--glass-line);background:var(--glass-strong);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow-sm)}.chapter-nav::-webkit-scrollbar{display:none}.chapter-nav button{flex:none;border:1px solid transparent;background:transparent;color:var(--muted);font:600 var(--fs-sm) var(--font-body);padding:7px 14px;min-height:36px;border-radius:999px;cursor:pointer;white-space:nowrap}.chapter-nav button:hover{color:var(--accent);background:var(--accent-soft)}.qopts{grid-template-columns:1fr}@media (min-width: 640px){.qopts{grid-template-columns:repeat(2,minmax(0,1fr))}}.qopt{min-height:52px;border-radius:var(--r-md)}.role-student .qopt{box-shadow:inset 0 1px #fff9}.qopt.chosen{box-shadow:0 0 0 3px var(--accent-soft)}.qcard{border-radius:var(--r-lg)}.qcard.right{background:color-mix(in srgb,var(--ok-soft) 35%,var(--surface))}.qcard.wrong{background:color-mix(in srgb,var(--bad-soft) 30%,var(--surface))}@media (max-width: 640px){.card.quiz,.practice-session .card{padding:14px}.qcard{padding:12px}.qtext{font-size:var(--fs-md)}}.player{border-color:var(--glass-line);background:var(--glass);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px)}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.player{background:var(--surface)}}.more-btn{display:none}@media (max-width: 640px){.player{bottom:8px;width:calc(100% - 16px);border-radius:16px}.player-row{grid-template-columns:minmax(0,1fr) auto;padding:8px 10px;gap:8px}.player-now .voice-tag,.player-now .muted{display:none}.player-now strong{font-size:var(--fs-sm)}.pbtn{width:38px;height:38px}.pbtn.main{width:46px;height:46px}.more-btn{display:grid}.player-opts{display:none}.player.show-opts .player-opts{display:flex;grid-column:1 / -1;justify-content:space-between;padding-top:4px;border-top:1px solid var(--line)}.player-spacer{height:84px}}.focus-item{min-height:var(--tap);border-radius:var(--r-md)}.role-student .focus-item,.role-student .practice-row{background:var(--surface)}.topic-rows li{align-items:center}.practice-banner{background:linear-gradient(120deg,color-mix(in srgb,var(--accent) 10%,var(--surface)),var(--surface))}body:has(.role-teacher),body:has(.role-admin){background:var(--bg)}.role-teacher .bg-blobs,.role-admin .bg-blobs{display:none}.role-teacher,.role-admin{font-size:var(--fs-md)}.role-teacher .card,.role-admin .card{box-shadow:none;border-radius:var(--r-lg)}.role-teacher .card>header,.role-admin .card>header{padding-bottom:var(--sp-3);border-bottom:1px solid var(--line)}.role-teacher .btn.primary,.role-admin .btn.primary{background:var(--accent);box-shadow:none}.role-teacher .btn.primary:hover:not(:disabled),.role-admin .btn.primary:hover:not(:disabled){filter:brightness(1.08)}.role-teacher .tabs button[aria-pressed=true],.role-admin .tabs button[aria-pressed=true],.role-teacher .roles button[aria-pressed=true],.role-admin .roles button[aria-pressed=true]{background:var(--accent)}.role-teacher .tabs,.role-admin .tabs,.role-teacher .stat,.role-admin .stat{box-shadow:none}.role-teacher .stat:after,.role-admin .stat:after{opacity:.45;width:72px;height:72px;right:-20px;bottom:-20px}.role-teacher .stat:hover,.role-admin .stat:hover{transform:none;border-color:var(--accent);box-shadow:none}.role-teacher .chcard,.role-admin .chcard{background:var(--surface)}.role-teacher .item,.role-admin .item{box-shadow:none}.role-teacher .sticky,.role-admin .sticky{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.role-teacher .card,.role-admin .card,.role-teacher .stat,.role-admin .stat,.role-teacher .chcard,.role-admin .chcard{animation:none}.role-teacher .dash-hero-icon,.role-admin .dash-hero-icon{background:var(--h, var(--accent))}.role-guest .login{box-shadow:var(--clay);border-radius:var(--r-xl)}html,body{overflow-x:clip}.wrap{grid-template-columns:minmax(0,1fr)}.wrap>*{min-width:0}.top{margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding-left:max(16px,calc(50vw - 50% + 16px));padding-right:max(16px,calc(50vw - 50% + 16px))}.chapter-nav{justify-self:start;max-width:100%}td.actions{display:table-cell;margin:0}@media (max-width: 640px){.stats{gap:8px}.stat{grid-template-columns:auto minmax(0,1fr);column-gap:10px;align-items:center;padding:12px;border-radius:var(--r-md)}.stat-icon{grid-row:span 2;margin:0;width:34px;height:34px}.stat strong{font-size:22px}.stat>span:last-child{font-size:var(--fs-xs);line-height:1.25}.stat:after{display:none}.dash-hero{gap:12px}.dash-hero-icon{display:none}.dash-hero-num strong{font-size:40px}.kpis{gap:8px}.kpi{padding:12px}.kpi strong{font-size:22px}}.btn.primary,.btn.primary:hover:not(:disabled),.tabs button[aria-pressed=true],.roles button[aria-pressed=true],.pbtn.main,.pbtn.main:hover,.fchip[aria-pressed=true],.steps-bar span.on,.qopt.chosen .opt-letter{color:var(--accent-ink)}.practice-intro{gap:var(--sp-2)}.practice-intro h2,.practice-intro p{margin:0}@keyframes fadeUp{0%{transform:translateY(10px)}to{transform:none}}.roles button,.tabs button{transition:background .15s}.modal-body{grid-auto-rows:max-content;align-content:start}.top{background:var(--surface)}.wordmark{letter-spacing:-.01em}.wordmark .wm-ai{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}@supports not ((-webkit-background-clip: text) or (background-clip: text)){.wordmark .wm-ai{color:var(--accent);-webkit-text-fill-color:currentColor}}.brand p{font-weight:600;color:var(--accent);letter-spacing:.02em}@media (max-width: 640px){.brand p{display:block;font-size:11.5px;line-height:1.2;white-space:nowrap}}.trust-line{display:flex;align-items:center;justify-content:center;gap:6px;margin:-6px 0 0;font-size:var(--fs-sm, 13px);font-weight:600;color:var(--ok, #15803d);text-align:center}.banners{display:grid;gap:8px;margin:0 0 12px}.banner{display:flex;align-items:flex-start;gap:10px;padding:10px 12px 10px 14px;border-radius:12px;border:1px solid color-mix(in srgb,currentColor 25%,transparent);border-left-width:4px;background:var(--accent-soft);color:var(--accent);animation:banner-in .35s ease-out both}.banner-warning{background:var(--warn-soft);color:var(--warn)}.banner-urgent{background:var(--bad-soft);color:var(--bad)}.banner-tag{flex:none;font-size:11.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,currentColor 14%,transparent);margin-top:1px}.banner-text{flex:1;margin:0;color:var(--ink);font-size:14.5px;line-height:1.45;white-space:pre-line;overflow-wrap:anywhere}.banner-close{flex:none;border:0;background:transparent;color:var(--muted);font-size:20px;line-height:1;padding:0 4px;cursor:pointer;border-radius:6px}.banner-close:hover{color:var(--ink);background:color-mix(in srgb,currentColor 10%,transparent)}@keyframes banner-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion: reduce){.banner{animation:none}}.banner-row.is-live{border-color:var(--ok)}.banner-form{display:grid;gap:14px}.banner-form fieldset{border:1px solid var(--line);border-radius:12px;padding:10px 12px 12px;margin:0}.banner-form legend{font-weight:700;padding:0 6px}.choice-list{display:grid;gap:8px}.choice-list.row{display:flex;flex-wrap:wrap;gap:8px 18px}.choice{display:flex;align-items:flex-start;gap:8px;cursor:pointer}.choice input{margin-top:3px}.school-picks{display:grid;gap:8px;margin-top:10px}.school-picks input[type=search]{min-width:0;flex:1;max-width:280px}.pick-list{list-style:none;margin:0;padding:6px 8px;max-height:220px;overflow:auto;display:grid;gap:6px;border:1px solid var(--line);border-radius:10px}.text-btn{border:0;background:none;padding:0;color:var(--accent);cursor:pointer;font:inherit;text-decoration:underline}.usage-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}.usage-tile{display:grid;gap:2px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}.usage-tile b{font-size:20px;font-variant-numeric:tabular-nums}.usage-tile.strong{border-color:var(--accent);background:var(--accent-soft)}.usage-table td{vertical-align:top}.usage-detail td{background:var(--surface-2)}.usage-detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.usage-detail-grid h4{margin:0 0 6px}ul.plain{list-style:none;margin:0;padding:0;display:grid;gap:4px}.pricing-form{display:grid;gap:14px}.pricing-form fieldset{border:1px solid var(--line);border-radius:12px;padding:10px 14px 14px;margin:0;display:grid;gap:10px}.pricing-form legend{font-weight:700;padding:0 6px}.grade-prices{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}.invoice-preview{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff;overflow-x:auto}.invoice .inv-seller{font:700 18px var(--font-display);display:block}.invoice .inv-pre{white-space:pre-line}.invoice .inv-meta{text-align:right}.invoice .inv-meta h1{font:700 20px var(--font-display);margin:0 0 6px;color:var(--rc-accent);text-transform:uppercase;letter-spacing:.04em}.invoice .inv-meta dl{display:grid;grid-template-columns:auto auto;gap:2px 12px;margin:0;justify-content:end}.invoice .inv-meta dt{color:var(--rc-muted)}.invoice .inv-meta dd{margin:0;font-weight:700}.invoice .inv-to{display:grid;gap:2px;padding:8px 0}.invoice .inv-to>.muted{font-size:11px;text-transform:uppercase;letter-spacing:.05em}.invoice .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.invoice .inv-table tfoot td{border-top:1px solid var(--rc-line)}.invoice .inv-table tfoot td:first-child{text-align:right;color:var(--rc-muted)}.invoice .inv-total td{font-weight:800;font-size:14px;border-top:2px solid var(--rc-ink)!important;color:var(--rc-ink)!important}.invoice .inv-usage ul{margin:0;padding-left:18px;display:grid;gap:2px}