@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{color-scheme:light;font-family:PingFang SC,Noto Sans CJK SC,Microsoft YaHei,system-ui,sans-serif;color:#101313;background:#f6f7f7;font-synthesis:none;--bg: #f6f7f7;--surface: #fff;--surface-muted: #eff1f1;--ink: #101313;--ink-2: #5e6666;--ink-3: #929a99;--line: #dce0df;--line-dark: #c5cbca;--cyan: #1ee4d4;--cyan-dark: #05aa9f;--danger: #c84242;--shadow: 0 24px 70px rgba(15, 28, 26, .09);--radius: 18px}*{box-sizing:border-box}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}html,body,#root{min-height:100%;margin:0}body{min-width:320px;background:var(--bg)}button,input{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible{outline:2px solid var(--cyan-dark);outline-offset:2px}.auth-page{display:grid;grid-template-columns:minmax(520px,1.12fr) minmax(480px,.88fr);min-height:100vh;background:var(--surface)}.auth-visual{position:relative;display:flex;flex-direction:column;min-height:100vh;padding:42px 52px 28px;overflow:hidden;color:#ecf4f2;background:#0d1111}.auth-visual:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 74% 42%,rgba(30,228,212,.13),transparent 31%),linear-gradient(135deg,rgba(255,255,255,.035),transparent 34%);pointer-events:none}.auth-visual__top{position:relative;z-index:2}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink)}.brand__mark{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px}.brand__mark svg{width:100%;height:100%}.brand__type{display:flex;flex-direction:column;gap:4px}.brand__type strong{font-size:21px;font-weight:650;line-height:1;letter-spacing:.08em}.brand__type small{color:var(--ink-3);font:600 7px/1 DM Mono,monospace;letter-spacing:.25em}.brand--inverse{color:#eef7f5}.brand--inverse .brand__type small{color:#82908e}.brand--compact{gap:9px}.brand--compact .brand__mark{flex-basis:34px;width:34px;height:34px}.brand--compact .brand__type{gap:3px}.brand--compact .brand__type strong{font-size:16px}.brand--compact .brand__type small{font-size:5.5px}.auth-visual__message{position:relative;z-index:2;margin:auto 0;max-width:560px}.auth-visual__message h2{margin:24px 0;font-size:clamp(40px,4.4vw,72px);font-weight:500;line-height:1.16;letter-spacing:-.055em}.auth-visual__message p{margin:0 0 12px;font-size:17px;letter-spacing:.08em;color:#c8d0cf}.auth-visual__message small{display:block;font:400 10px/1.8 DM Mono,monospace;letter-spacing:.18em;color:#687473}.signal-dot{display:grid;place-items:center;width:23px;height:23px;border:1px solid rgba(30,228,212,.45);border-radius:50%}.signal-dot i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 18px var(--cyan);animation:pulse 2.3s infinite}.auth-visual__footer{position:relative;z-index:2;display:flex;justify-content:space-between;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);font:400 9px/1 DM Mono,monospace;letter-spacing:.12em;color:#66706f}.chart-art{position:absolute;z-index:1;width:min(70vw,780px);height:min(70vw,780px);right:-22%;bottom:-10%;opacity:.86}.chart-art svg,.chart-art__grid{position:absolute;inset:0;width:100%;height:100%}.chart-art__grid{opacity:.28;background-image:linear-gradient(rgba(123,151,147,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(123,151,147,.12) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(circle,black 20%,transparent 72%);mask-image:radial-gradient(circle,black 20%,transparent 72%)}.chart-ring{stroke:#485552;stroke-width:.7;stroke-dasharray:4 7}.ring-2{stroke:#1ee4d447}.route{stroke:var(--cyan);stroke-width:1.5;stroke-dasharray:7 9;filter:drop-shadow(0 0 5px rgba(30,228,212,.7));animation:route 18s linear infinite}.route-b{opacity:.25;animation-duration:26s}.coast{stroke:#60706d;stroke-width:1.3;opacity:.35}.buoy{stroke:var(--cyan);fill:#0d1111;stroke-width:1.6}.vessel path{fill:var(--cyan)}.vessel circle{stroke:#1ee4d473;animation:radar 2.8s ease-out infinite;transform-origin:378px 399px}.coord,.chart-art__label{position:absolute;font:400 9px/1 DM Mono,monospace;letter-spacing:.08em;color:#53615f}.coord--a{left:15%;top:44%}.coord--b{right:8%;top:37%}.chart-art__label{right:26%;bottom:20%;color:var(--cyan)}.auth-panel{display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding:62px clamp(42px,6vw,104px) 28px;background:var(--surface)}.mobile-brand{display:none}.auth-card{width:100%;max-width:440px;margin:auto}.auth-transition{animation:rise .38s ease both}.step-kicker,.card-kicker{color:var(--cyan-dark);font:500 10px/1.3 DM Mono,monospace;letter-spacing:.18em}.auth-card h1{margin:15px 0 9px;color:var(--ink);font-size:clamp(29px,3vw,38px);font-weight:600;line-height:1.25;letter-spacing:-.045em}.auth-copy{margin:0 0 32px;color:var(--ink-2);font-size:14px;line-height:1.8}.auth-copy strong{color:var(--ink);font-weight:600}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;margin-bottom:25px;border-bottom:1px solid var(--line)}.auth-tabs button{position:relative;border:0;padding:13px 2px;color:var(--ink-3);background:none;cursor:pointer}.auth-tabs button:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent}.auth-tabs button.active{color:var(--ink);font-weight:600}.auth-tabs button.active:after{background:var(--ink)}.auth-form{display:flex;flex-direction:column;gap:14px}.phone-field,.field input{width:100%;height:54px;border:1px solid var(--line-dark);border-radius:12px;color:var(--ink);background:var(--surface);transition:border-color .2s,box-shadow .2s}.phone-field{display:flex;align-items:center}.phone-field:focus-within,.field input:focus{border-color:#65706e;box-shadow:0 0 0 3px #1ee4d41f}.phone-field>svg{flex:0 0 auto;margin-left:16px;color:var(--ink-3)}.phone-field .phone-prefix{margin-left:11px;padding:0 14px 0 0;border-right:1px solid var(--line);color:var(--ink-2);font:500 13px/22px DM Mono,monospace}.phone-field input{flex:1;min-width:0;height:100%;padding:0 16px;border:0;outline:0;color:var(--ink);background:transparent}.phone-field input::placeholder,.field input::placeholder{color:#a6adac}.field{display:flex;flex-direction:column;gap:7px}.field__label{display:flex;justify-content:space-between;color:var(--ink-2);font-size:12px}.field input{padding:0 16px;outline:0}.field__hint{color:var(--ink-3);font-size:11px}.password-wrap{position:relative}.password-wrap .field__label{position:absolute;width:0;height:0;overflow:hidden}.password-wrap>button{position:absolute;right:5px;bottom:5px;display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:9px;color:var(--ink-3);background:transparent;cursor:pointer}.password-wrap .input-leading{position:absolute;z-index:1;left:16px;bottom:18px;display:grid;color:var(--ink-3);pointer-events:none}.password-wrap .field input{padding-right:52px;padding-left:46px}.text-link,.register-link,.back-link{border:0;color:var(--ink-2);background:none;cursor:pointer}.forgot{align-self:flex-end;margin-top:-7px;padding:0;font-size:12px}.back-link{display:inline-flex;align-items:center;gap:5px;margin:0 0 35px -4px;padding:5px;font-size:13px}.agreement{position:relative;display:flex;align-items:flex-start;gap:8px;color:var(--ink-3);font-size:11px;line-height:1.6;cursor:pointer}.agreement input{position:absolute;opacity:0}.agreement__box{flex:0 0 16px;display:grid;place-items:center;width:16px;height:16px;margin-top:1px;border:1px solid var(--line-dark);border-radius:4px;color:transparent}.agreement input:checked+.agreement__box{border-color:var(--ink);color:var(--surface);background:var(--ink)}.agreement button{border:0;padding:0;color:var(--ink-2);background:none;cursor:pointer;text-decoration:underline;text-underline-offset:2px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 22px;border:1px solid transparent;border-radius:12px;font-weight:600;cursor:pointer;transition:transform .18s,opacity .18s,background .18s}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled{opacity:.44;cursor:not-allowed}.button--primary{color:#f5ffff;background:var(--ink)}.button--primary:hover:not(:disabled){background:#25302f}.button--secondary{border-color:var(--line);color:var(--ink);background:var(--surface)}.button--ghost{min-height:42px;color:var(--ink-2);background:transparent}.register-link{margin-top:1px;padding:7px;font-size:12px}.divider{display:flex;align-items:center;gap:12px;margin:27px 0 18px;color:var(--ink-3);font-size:10px}.divider:before,.divider:after{content:"";height:1px;flex:1;background:var(--line)}.social-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.social-row button{display:grid;place-items:center;gap:5px;min-width:0;padding:11px 3px 8px;border:1px solid var(--line);border-radius:11px;color:var(--ink-2);background:var(--surface);cursor:pointer;transition:border-color .18s,background .18s}.social-row button:hover{border-color:var(--line-dark);background:var(--surface-muted)}.brand-icon{display:grid;place-items:center;width:24px;height:24px;overflow:hidden;border-radius:7px}.brand-icon img{display:block;width:100%;height:100%;object-fit:contain}.brand-icon--wechat{padding:4px;background:#07c160}.brand-icon--qq img{width:23px;height:23px}.brand-icon--google{background:#f2f2f2}.brand-icon--github{padding:2px;background:#fff}.social-row small{overflow:hidden;max-width:100%;color:var(--ink-3);font-size:9px;text-overflow:ellipsis;white-space:nowrap}.auth-footer{display:flex;justify-content:space-between;width:100%;max-width:440px;margin:35px auto 0;color:var(--ink-3);font:400 8px/1.4 DM Mono,monospace;letter-spacing:.05em}.form-error{margin:0;color:var(--danger);font-size:12px;line-height:1.5}.spinner{width:17px;height:17px;border:2px solid rgba(255,255,255,.3);border-top-color:currentColor;border-radius:50%;animation:spin .8s linear infinite}.spinner--dark{color:var(--ink);border-color:var(--line);border-top-color:currentColor}.status-line{display:flex;align-items:center;gap:8px;color:var(--ink-2);font-size:12px}.resend-note{text-align:center;color:var(--ink-3);font-size:11px}.verification-badge{display:grid;place-items:center;width:42px;height:42px;margin-bottom:20px;border:1px solid var(--line);border-radius:12px;color:var(--cyan-dark);background:var(--surface-muted)}.code-input{position:relative;display:block;margin-bottom:18px;cursor:text}.code-input input{position:absolute;opacity:0;pointer-events:none}.code-input>span{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.code-input i{display:grid;place-items:center;aspect-ratio:.82;border:1px solid var(--line-dark);border-radius:10px;color:var(--ink);background:var(--surface);font:500 22px/1 DM Mono,monospace;font-style:normal}.code-input i.active{border-color:var(--ink);box-shadow:0 0 0 3px #1ee4d41f}.code-input.is-error i{border-color:#c842428c}.password-strength{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;align-items:center}.password-strength>span{height:3px;border-radius:10px;background:var(--line)}.password-strength>span.on{background:var(--cyan-dark)}.password-strength small{grid-column:1 / -1;color:var(--ink-3);font-size:10px}.modal::backdrop{background:#070a0a8a;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fade .2s ease}.modal{position:fixed;inset:0;width:min(410px,calc(100% - 40px));max-height:calc(100% - 40px);margin:auto;padding:34px;border:1px solid var(--line);border-radius:18px;color:var(--ink);background:var(--surface);box-shadow:var(--shadow);animation:rise .3s ease}.modal h2{margin:7px 38px 12px 0;font-size:22px;letter-spacing:-.03em}.modal p{color:var(--ink-2);font-size:13px;line-height:1.8}.modal .button{width:100%;margin-top:14px}.icon-button{display:grid;place-items:center;width:44px;height:44px;border:0;background:none;cursor:pointer}.modal__close{position:absolute;top:12px;right:12px;border-radius:10px;color:var(--ink-2)}.coming-icon{display:grid;place-items:center;width:54px;height:54px;margin-bottom:22px;border-radius:50%;color:#005f59;background:var(--cyan)}.legal-copy{max-height:52vh;overflow:auto}.boot-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;min-height:100vh}.onboarding{position:relative;min-height:100vh;padding:28px clamp(24px,6vw,84px) 70px;overflow:hidden;background:var(--bg)}.onboarding>header{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between}.onboarding>header>span{color:var(--ink-3);font:500 9px/1 DM Mono,monospace;letter-spacing:.15em}.onboarding__content{position:relative;z-index:2;max-width:920px;margin:clamp(60px,10vh,110px) auto 0}.onboarding__content>h1{margin:15px 0 12px;font-size:clamp(35px,5vw,56px);font-weight:600;letter-spacing:-.055em}.onboarding__content>p{color:var(--ink-2)}.onboarding__grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:42px}.onboarding fieldset{display:flex;flex-direction:column;gap:10px;padding:0;border:0}.onboarding legend{width:100%;margin-bottom:13px;color:var(--ink);font-size:13px;font-weight:600}.onboarding legend span{float:right;color:var(--ink-3);font-size:10px;font-weight:400}.onboarding fieldset button{display:flex;align-items:center;gap:13px;padding:15px;border:1px solid var(--line);border-radius:13px;text-align:left;color:var(--ink);background:#ffffffc7;cursor:pointer}.onboarding fieldset button:hover,.onboarding fieldset button.selected{border-color:var(--ink)}.onboarding fieldset button.selected{box-shadow:inset 3px 0 var(--cyan-dark)}.onboarding fieldset button>i{display:grid;place-items:center;flex:0 0 20px;width:20px;height:20px;border:1px solid var(--line-dark);border-radius:50%;font-style:normal}.onboarding fieldset button.selected>i{border-color:var(--ink);color:var(--surface);background:var(--ink)}.onboarding fieldset button>span{display:flex;flex-direction:column;gap:3px}.onboarding fieldset strong{font-size:13px}.onboarding fieldset small{color:var(--ink-3);font-size:10px}.onboarding__actions{display:flex;justify-content:flex-end;gap:8px;margin-top:34px}.onboarding__actions .button--primary{min-width:220px}.onboarding__orb{position:fixed;right:-18vw;bottom:-37vw;width:70vw;height:70vw;border:1px solid rgba(5,170,159,.18);border-radius:50%;box-shadow:0 0 0 9vw #05aa9f06,0 0 0 18vw #05aa9f05}.app-shell{min-height:100vh;background:var(--bg)}.app-header{position:sticky;z-index:20;top:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:76px;padding:0 clamp(22px,5vw,74px);border-bottom:1px solid rgba(220,224,223,.78);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.app-header nav{display:flex;align-self:stretch;gap:35px}.app-header nav button{position:relative;display:flex;align-items:center;gap:7px;border:0;color:var(--ink-3);background:none;cursor:pointer}.app-header nav button.active{color:var(--ink);font-weight:600}.app-header nav button.active:after{content:"";position:absolute;left:calc(50% - 3px);bottom:13px;width:6px;height:2px;border-radius:5px;background:var(--cyan-dark)}.account-entry{position:relative;justify-self:end}.avatar{display:grid;place-items:center;width:36px;height:36px;padding:0;border:0;border-radius:50%;color:#004f49;background:transparent;font-size:12px;font-weight:700;cursor:pointer}.avatar:focus-visible{outline:3px solid color-mix(in srgb,var(--cyan-dark) 38%,transparent);outline-offset:3px}.learner-avatar{position:relative;display:inline-grid;place-items:center;line-height:0}.learner-avatar__art{display:block;overflow:visible}.learner-avatar--vip{padding:3px;border:2px solid #c79b42;border-right-color:#f1d179;border-radius:50%;background:#fffaf0}.learner-avatar__vip-badge{position:absolute;right:-7px;bottom:-3px;padding:3px 4px;border:1px solid #9a7024;border-radius:999px;color:#604414;background:#f4d98b;font:700 7px/1 DM Mono,monospace;letter-spacing:.04em}.account-menu{position:fixed;z-index:100;width:min(360px,calc(100vw - 32px));overflow:hidden;border:1px solid var(--line);color:var(--ink);background:var(--surface);box-shadow:var(--shadow);animation:rise .16s ease-out}.account-menu--popover{top:66px;right:clamp(22px,5vw,74px);border-radius:18px}.account-menu__handle{display:none}.account-menu__scroll{padding-bottom:var(--account-menu-safe-bottom, 0)}.account-menu__profile{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:4px 13px;padding:22px 22px 17px}.account-menu__avatar{grid-row:span 2;display:grid;place-items:center;width:45px;height:45px;border-radius:50%;color:#004f49;background:transparent;font-weight:700}.account-menu__profile>span:nth-child(2){display:flex;flex-direction:column;gap:4px}.account-menu__profile strong{font-size:14px}.account-menu__profile small{color:var(--ink-3);font:400 9px/1 DM Mono,monospace}.account-menu__verified{grid-column:2;display:flex;align-items:center;gap:5px;color:var(--cyan-dark);font-size:9px}.account-menu__summary{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:0 16px 10px;padding:11px 12px;border-radius:10px;color:var(--ink-3);background:var(--surface-muted);font-size:9px}.account-menu__vip-chip{width:fit-content;padding:3px 6px;border:1px solid #dfc06b;border-radius:999px;color:#7b5a1f;background:#fff6d9;font-weight:700}.account-menu__actions{display:flex;flex-direction:column;padding:6px 10px 10px}.account-menu__actions a,.account-menu__actions button{display:grid;grid-template-columns:25px 1fr auto;align-items:center;min-height:43px;padding:0 11px;border:0;border-radius:10px;color:var(--ink-2);text-align:left;text-decoration:none;background:none;cursor:pointer}.account-menu__actions a:hover,.account-menu__actions button:hover,.account-menu__actions a:focus-visible,.account-menu__actions button:focus-visible{outline:none;color:var(--ink);background:var(--surface-muted)}.account-menu__actions a>svg:last-child{color:var(--ink-3)}.account-menu__actions button{margin-top:5px;border-top:1px solid var(--line);border-radius:0 0 10px 10px;color:var(--danger)}.account-menu__backdrop{position:fixed;z-index:90;inset:0;width:100%;height:100%;padding:0;border:0;background:#060c0c85;cursor:default;animation:fade .16s ease-out}.app-main{width:min(1160px,calc(100% - 44px));margin:0 auto;padding:64px 0 100px}.bottom-nav{display:none}.dashboard__intro{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px}.dashboard__intro h1,.me-page h1{margin:13px 0 8px;font-size:clamp(35px,5vw,58px);font-weight:600;letter-spacing:-.058em}.home-vip-greeting{display:inline-block;margin-left:12px;padding:5px 8px;vertical-align:middle;border:1px solid #dbbd68;border-radius:999px;color:#79571c;background:#fff7df;font:700 10px/1 DM Mono,monospace;letter-spacing:.04em}.home-vip-strip{display:flex;align-items:center;gap:12px;margin:-22px 0 18px;padding:11px 14px;border:1px solid #e2c675;border-radius:13px;color:#365a4f;background:#fff9e9;font-size:11px}.home-vip-strip>span{color:#7b5a1f;font-weight:700}.home-vip-strip>strong{font-weight:650}.home-vip-strip>a{margin-left:auto;color:#245a51;font-weight:700;text-underline-offset:3px}.dashboard__intro p{margin:0;color:var(--ink-2)}.course-chip{display:grid;grid-template-columns:auto auto;align-items:end;gap:2px 16px;min-width:190px;padding:14px 18px;border-left:1px solid var(--line-dark)}.course-chip span,.course-chip small{color:var(--ink-3);font:400 9px/1.4 DM Mono,monospace;letter-spacing:.1em}.course-chip strong{grid-row:span 2;font:500 28px/1 DM Mono,monospace}.continue-card{position:relative;display:grid;grid-template-columns:1fr 300px;min-height:300px;padding:clamp(30px,5vw,58px);overflow:hidden;border-radius:22px;color:#f3f8f7;background:#101514}.continue-card:after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 35%,rgba(30,228,212,.05));pointer-events:none}.continue-card>div:first-child{position:relative;z-index:2;max-width:550px}.continue-card h2{margin:22px 0 12px;font-size:clamp(27px,4vw,43px);font-weight:500;letter-spacing:-.05em}.continue-card p{max-width:500px;margin:0 0 28px;color:#98a6a4;font-size:13px;line-height:1.8}.continue-card .button{width:fit-content;min-height:46px;color:#14443f;background:var(--cyan)}.continue-card .card-kicker{color:var(--cyan)}.continue-card__radar{position:relative;align-self:center;justify-self:center;display:grid;place-items:center;width:210px;height:210px;border:1px solid #37423f;border-radius:50%}.continue-card__radar i{position:absolute;width:66%;height:66%;border:1px dashed #3d4b48;border-radius:50%}.continue-card__radar i:nth-child(2){width:34%;height:34%}.continue-card__radar i:nth-child(3){width:1px;height:100%;border:0;border-left:1px solid #33413e;border-radius:0;transform:rotate(38deg)}.continue-card__radar span{position:relative;z-index:2;display:grid;place-items:center;width:74px;height:74px;border-radius:50%;color:var(--cyan);background:#18211f;box-shadow:0 0 45px #1ee4d41a}.dashboard__grid{display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:16px;margin-top:16px}.data-card{min-height:245px;padding:25px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.data-card header{display:flex;justify-content:space-between;color:var(--ink-3)}.empty-metric{display:flex;align-items:flex-end;gap:8px;margin-top:29px}.empty-metric strong{font:500 56px/.9 DM Mono,monospace}.empty-metric span{color:var(--ink-3);font-size:11px}.data-card>p{margin-top:27px;color:var(--ink-3);font-size:11px;line-height:1.7}.empty-state{display:flex;flex-direction:column;justify-content:center;min-height:164px;color:var(--ink-2)}.empty-state:before{content:"";width:32px;height:2px;margin-bottom:20px;background:var(--line-dark)}.empty-state small{margin-top:7px;color:var(--ink-3);font-size:10px}.ai-card{color:#eaf4f2;background:#1a201f}.ai-card .card-kicker,.ai-card header{color:var(--cyan)}.ai-card blockquote{margin:34px 0 20px;font-size:13px;line-height:1.9}.ai-card>small{color:#77817f;font-size:9px}.library-page{display:flex;flex-direction:column;gap:24px}.library-page__header{display:flex;align-items:flex-end;justify-content:space-between;gap:32px}.library-page__header h1{margin:12px 0 9px;font-size:clamp(34px,5vw,55px);font-weight:600;letter-spacing:-.055em}.library-page__header p,.library-level header p{margin:0;color:var(--ink-2);font-size:12px;line-height:1.7}.library-search{display:flex;align-items:center;flex:0 1 340px;min-width:260px;height:48px;padding:0 13px;border:1px solid var(--line);border-radius:14px;color:var(--ink-3);background:var(--surface)}.library-search:focus-within{border-color:var(--line-dark);box-shadow:0 0 0 3px color-mix(in srgb,var(--cyan-dark) 11%,transparent)}.library-search input{min-width:0;flex:1;height:100%;padding:0 9px;border:0;outline:0;color:var(--ink);background:transparent;font:inherit}.library-search button{width:28px;height:28px;padding:0;border:0;border-radius:50%;color:var(--ink-3);background:var(--surface-muted);cursor:pointer}.library-scope{display:flex;align-items:center;gap:9px;min-height:28px;overflow-x:auto;color:var(--ink-3);font-size:10px;white-space:nowrap;scrollbar-width:none}.library-scope::-webkit-scrollbar{display:none}.library-scope button{padding:5px 8px;border:0;border-radius:7px;color:var(--ink-2);background:var(--surface-muted);cursor:pointer}.library-scope>span:last-child{color:var(--ink);font-weight:600}.library-steps{display:grid;grid-template-columns:repeat(3,1fr);margin:0;padding:0;border:1px solid var(--line);border-radius:15px;background:var(--surface);list-style:none}.library-step{position:relative;display:flex;align-items:center;justify-content:center;gap:9px;min-height:58px;color:var(--ink-3);font-size:11px}.library-step+.library-step:before{content:"";position:absolute;left:0;width:1px;height:22px;background:var(--line)}.library-step>span{display:grid;place-items:center;width:24px;height:24px;border:1px solid var(--line-dark);border-radius:50%;font:500 8px/1 DM Mono,monospace}.library-step--active{color:var(--ink)}.library-step--active>span{border-color:var(--cyan-dark);color:#004f49;background:var(--cyan)}.library-step--done>span{border-color:var(--ink);color:var(--surface);background:var(--ink)}.library-level{display:flex;flex-direction:column;gap:18px}.library-level header{display:flex;align-items:flex-end;justify-content:space-between}.library-level h2{margin:0 0 6px;font-size:20px;letter-spacing:-.025em}.library-level h2:focus{outline:0}.library-level h2:focus-visible{text-decoration:underline;text-decoration-color:var(--cyan-dark);text-underline-offset:5px}.library-level-empty{display:grid;place-items:center;min-height:150px;padding:24px;border:1px dashed var(--line-dark);border-radius:16px;color:var(--ink-2);text-align:center;background:var(--surface);font-size:12px}.library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.library-card{position:relative;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto 1fr;gap:8px;min-height:172px;padding:20px;border:1px solid var(--line);border-radius:16px;color:var(--ink);text-align:left;background:var(--surface);cursor:pointer;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.library-card:hover,.library-card:focus-visible{outline:0;border-color:var(--line-dark);box-shadow:0 14px 35px #0a19170f;transform:translateY(-2px)}.library-card:disabled,.library-card.is-disabled{opacity:.58;cursor:wait;transform:none;box-shadow:none}.library-card>svg{grid-column:2;grid-row:1 / span 2;align-self:center;color:var(--ink-3)}.library-card__code{grid-column:1;color:var(--ink-3);font:500 9px/1.2 DM Mono,monospace;letter-spacing:.09em}.library-card>strong{grid-column:1;font-size:15px}.library-progress{grid-column:1 / -1;align-self:end;display:flex;flex-direction:column;gap:8px;width:100%}.library-progress__meta{display:flex;justify-content:space-between;color:var(--ink-3);font-size:9px}.library-progress__meta b{color:var(--ink-2);font:500 10px/1 DM Mono,monospace}.library-progress__track{display:block;height:3px;overflow:hidden;border-radius:3px;background:var(--surface-muted)}.library-progress__track i{display:block;height:100%;border-radius:inherit;background:var(--cyan-dark)}.library-card--knowledge{grid-template-columns:auto 1fr;padding-left:17px}.library-card--knowledge input{position:absolute;width:1px;height:1px;opacity:0}.library-card--knowledge:has(input:focus-visible){outline:3px solid color-mix(in srgb,var(--cyan-dark) 25%,transparent);outline-offset:2px}.library-card__check{grid-column:1;grid-row:1 / span 2;display:grid;place-items:center;align-self:center;width:22px;height:22px;border:1px solid var(--line-dark);border-radius:7px}.library-card--knowledge .library-card__code,.library-card--knowledge>strong{grid-column:2}.library-card--knowledge.selected{border-color:var(--ink);box-shadow:inset 3px 0 var(--cyan-dark)}.library-card--knowledge.selected .library-card__check{border-color:var(--ink);color:var(--surface);background:var(--ink)}.library-card--result{min-height:160px}.library-actions{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:13px;margin-top:5px;padding:17px 19px;border:1px solid var(--line);border-radius:17px;background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:0 16px 44px #0a19170f;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}.library-actions__scope{display:flex;flex-direction:column;gap:5px}.library-actions__scope span{font-size:12px;font-weight:600}.library-actions__scope small{color:var(--ink-3);font-size:9px}.library-actions .button{min-width:165px}.library-reset{padding:11px 6px;border:0;color:var(--ink-2);background:none;cursor:pointer}.library-inline-error{margin:-12px 0 0;padding:10px 13px;border-left:2px solid var(--danger);color:var(--danger);background:color-mix(in srgb,var(--danger) 5%,transparent);font-size:11px}.library-state{display:flex;align-items:center;justify-content:center;gap:11px;min-height:50vh;color:var(--ink-2)}.library-state--empty,.library-state--error{flex-direction:column;max-width:520px;margin:0 auto;text-align:center}.library-state__mark{display:grid;place-items:center;width:56px;height:56px;margin-bottom:10px;border-radius:50%;color:#004f49;background:var(--cyan)}.library-state h1{margin:8px 0 0;font-size:31px;letter-spacing:-.04em}.library-state p{margin:0;line-height:1.7}.practice-page{display:flex;flex-direction:column;gap:22px;max-width:900px;margin:0 auto}.practice-page__header{display:flex;align-items:flex-end;justify-content:space-between;gap:28px}.practice-page__header h1{margin:12px 0 8px;font-size:clamp(34px,5vw,52px);letter-spacing:-.055em}.practice-page__header p{margin:0;color:var(--ink-2);font-size:12px;line-height:1.7}.practice-progress{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:0 0 auto}.practice-progress strong{font:500 25px/1 DM Mono,monospace}.practice-progress span{color:var(--ink-3);font-size:10px}.practice-question{padding:clamp(24px,5vw,46px);border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:0 18px 52px #0a19170d}.practice-question__meta{display:flex;justify-content:space-between;margin-bottom:24px;color:var(--ink-3);font:500 9px/1 DM Mono,monospace;letter-spacing:.12em}.practice-question__stem{color:var(--ink);font-size:17px;line-height:1.85}.practice-question__stem h1,.practice-question__stem h2,.practice-question__stem h3{margin:0 0 14px;font-size:clamp(22px,4vw,31px);line-height:1.4;letter-spacing:-.035em}.markdown-content{min-width:0;overflow-wrap:anywhere}.markdown-content>:first-child{margin-top:0}.markdown-content>:last-child{margin-bottom:0}.markdown-content p,.markdown-content li{line-height:1.75}.markdown-content a{color:var(--cyan-dark);text-underline-offset:3px}.markdown-content pre,.markdown-content table,.markdown-content .katex-display{max-width:100%;overflow-x:auto}.markdown-content table{width:100%;border-collapse:collapse}.markdown-content th,.markdown-content td{padding:7px 9px;border:1px solid var(--line);text-align:left}.markdown-content img{display:block;max-width:100%;height:auto;margin:14px 0;border-radius:12px}.markdown-image-state{display:inline-flex;align-items:center;gap:9px;min-height:42px;padding:8px 12px;border:1px dashed var(--line-dark);border-radius:10px;color:var(--ink-3);font-size:11px}.markdown-image-state--error{color:var(--danger)}.markdown-image-state--error button{min-height:30px;padding:4px 9px;border:1px solid currentColor;border-radius:7px;color:inherit;background:var(--surface);font:inherit;cursor:pointer}.markdown-image-state--error button:hover{background:color-mix(in srgb,var(--danger) 8%,var(--surface))}.practice-options{display:flex;flex-direction:column;gap:10px;margin:30px 0 0;padding:0;border:0}.practice-options legend{margin-bottom:11px;font-size:12px;font-weight:650}.practice-option{display:grid;grid-template-columns:auto auto minmax(0,1fr);align-items:center;gap:13px;min-height:62px;padding:12px 16px;border:1px solid var(--line);border-radius:14px;cursor:pointer;transition:border-color .16s,background .16s}.practice-option:hover{border-color:var(--line-dark)}.practice-option.selected{border-color:var(--ink);background:color-mix(in srgb,var(--cyan) 6%,var(--surface))}.practice-option:has(input:focus-visible){outline:3px solid color-mix(in srgb,var(--cyan-dark) 25%,transparent);outline-offset:2px}.practice-option input{width:18px;height:18px;margin:0;accent-color:var(--cyan-dark)}.practice-option__key{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;color:var(--ink-2);background:var(--surface-muted);font:600 10px/1 DM Mono,monospace}.practice-options:disabled .practice-option{cursor:default}.practice-options:disabled .practice-option:not(.selected){opacity:.62}.practice-submit{min-width:180px;margin-top:22px}.practice-inline-error{margin:16px 0 0;padding:11px 13px;border-left:2px solid var(--danger);color:var(--danger);background:color-mix(in srgb,var(--danger) 5%,transparent);font-size:11px}.practice-feedback{margin-top:24px;padding:20px;border-radius:15px;background:var(--surface-muted)}.practice-feedback--correct{border-left:3px solid var(--cyan-dark)}.practice-feedback--wrong{border-left:3px solid var(--danger)}.practice-feedback h2{margin:0 0 14px;font-size:19px}.practice-feedback h2:focus{outline:0}.practice-feedback h2:focus-visible{text-decoration:underline;text-decoration-color:var(--cyan-dark);text-underline-offset:4px}.practice-feedback p{margin:7px 0;color:var(--ink-2);font-size:12px}.practice-feedback__explanation{margin-top:17px;padding-top:17px;border-top:1px solid var(--line)}.practice-navigation{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px}.practice-navigation button:first-child{justify-self:start}.practice-navigation button:last-child{justify-self:end}.practice-navigation span{color:var(--ink-3);font:500 10px/1 DM Mono,monospace}.practice-finish{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px;border-radius:17px;color:#edf7f5;background:#131918}.practice-finish>div{display:flex;flex-direction:column;gap:5px}.practice-finish strong{font-size:14px}.practice-finish span{color:#8b9896;font-size:10px}.practice-finish .button{flex:0 0 auto;color:#073d39;background:var(--cyan)}.practice-state{display:flex;align-items:center;justify-content:center;gap:11px;min-height:50vh;color:var(--ink-2)}.practice-state--error{flex-direction:column;text-align:center}.practice-state--error h1{margin:0;color:var(--ink)}.practice-summary{max-width:640px;margin:5vh auto 0;padding:clamp(28px,6vw,54px);border:1px solid var(--line);border-radius:22px;text-align:center;background:var(--surface)}.practice-summary h1{margin:13px 0 30px;font-size:clamp(31px,5vw,46px);letter-spacing:-.05em}.practice-summary__score{display:flex;flex-direction:column;gap:7px}.practice-summary__score strong{font:600 clamp(58px,12vw,88px)/1 "DM Mono",monospace}.practice-summary__score span{color:var(--ink-3);font-size:10px}.practice-summary dl{display:grid;grid-template-columns:repeat(3,1fr);margin:34px 0}.practice-summary dl div{padding:12px;border-left:1px solid var(--line)}.practice-summary dl div:first-child{border-left:0}.practice-summary dt{color:var(--ink-3);font-size:10px}.practice-summary dd{margin:7px 0 0;font:600 20px/1 DM Mono,monospace}.practice-summary .button{display:inline-flex;text-decoration:none}.practice-summary--closed p{margin:-10px 0 30px;color:var(--ink-2);line-height:1.75}.coming-page{display:flex;flex-direction:column;align-items:center;max-width:560px;margin:12vh auto 0;text-align:center}.coming-page__icon{display:grid;place-items:center;width:72px;height:72px;margin-bottom:30px;border-radius:50%;color:#004f49;background:var(--cyan);box-shadow:0 15px 45px #05aa9f2e}.coming-page h1{margin:16px 0;font-size:clamp(34px,5vw,52px);letter-spacing:-.05em}.coming-page p{color:var(--ink-2);line-height:1.8}.coming-pill{margin-top:25px;padding:8px 13px;border:1px solid var(--line);border-radius:30px;color:var(--ink-3);font:400 9px/1 DM Mono,monospace;letter-spacing:.1em}.me-page{max-width:720px;margin:0 auto}.profile-card{display:flex;align-items:center;gap:16px;margin:35px 0 16px;padding:25px;border-radius:18px;color:#eaf4f2;background:#151a19}.profile-card__avatar{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;color:#074d48;background:var(--cyan);font-weight:700}.profile-card>div:nth-child(2){display:flex;flex:1;flex-direction:column;gap:5px}.profile-card>div strong{font-size:16px}.profile-card>div span{color:#8e9a98;font:400 10px/1 DM Mono,monospace}.profile-card .verified{display:flex;align-items:center;gap:5px;color:var(--cyan);font-size:10px}.settings-card{overflow:hidden;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.settings-card>div{display:flex;align-items:center;gap:14px;min-height:76px;padding:0 22px;border-bottom:1px solid var(--line)}.settings-card>div:last-child{border-bottom:0}.setting-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;color:var(--ink-2);background:var(--surface-muted)}.settings-card p{display:flex;flex:1;flex-direction:column;gap:4px;margin:0}.settings-card p strong{font-size:13px}.settings-card p small{color:var(--ink-3);font-size:10px}.settings-card>div>svg{color:var(--ink-3)}.settings-card em{color:var(--ink-3);font-size:9px;font-style:normal}.disabled-setting{opacity:.7}.logout-button{width:100%;margin-top:20px;color:var(--danger)}.version{margin-top:28px;text-align:center;color:var(--ink-3);font:400 8px/1 DM Mono,monospace;letter-spacing:.14em}.account-page{display:grid;grid-template-columns:220px minmax(0,1fr);gap:clamp(28px,5vw,68px);max-width:1120px;margin:0 auto}.account-sidebar{position:sticky;top:96px;align-self:start}.account-sidebar h1{margin:10px 0 28px;font-size:25px;letter-spacing:-.04em}.account-sidebar nav{display:flex;flex-direction:column;gap:4px}.account-sidebar a{padding:13px 15px;border-radius:11px;color:var(--ink-2);font-size:12px;text-decoration:none}.account-sidebar a:hover{background:var(--surface-muted)}.account-sidebar a[aria-current=page]{color:var(--ink);font-weight:650;background:var(--surface-muted);box-shadow:inset 2px 0 var(--cyan-dark)}.account-section-select{display:none}.account-content{min-width:0}.account-panel{min-height:460px;padding:clamp(25px,4vw,42px);border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:0 18px 54px #0f1c1a0b}.account-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:25px;margin-bottom:30px}.account-panel__header h1,.account-placeholder h1{margin:12px 0 8px;font-size:clamp(30px,4vw,43px);letter-spacing:-.05em}.account-panel__header p,.account-placeholder p{max-width:590px;margin:0;color:var(--ink-2);font-size:12px;line-height:1.75}.profile-progress{display:flex;flex:0 0 auto;flex-direction:column;align-items:flex-end;gap:5px;padding:13px 15px;border-radius:13px;background:var(--surface-muted)}.profile-progress strong{font:650 21px/1 DM Mono,monospace}.profile-progress span{color:var(--ink-3);font-size:9px}.self-report-note{margin:0 0 24px;padding:12px 14px;border-left:2px solid var(--cyan-dark);color:var(--ink-2);background:var(--surface-muted);font-size:11px;line-height:1.65}.self-report-note strong{margin:0 3px;color:var(--ink)}.account-form__controls{display:flex;flex-direction:column;gap:18px;min-width:0;margin:0;padding:0;border:0}.account-form__controls:disabled{opacity:.72}.account-form__controls>label,.account-form__year label{display:flex;flex-direction:column;gap:7px;color:var(--ink-2);font-size:11px}.account-form label>span{display:flex;justify-content:space-between;align-items:center}.account-form label em{padding:3px 7px;border-radius:20px;color:var(--ink-3);background:var(--surface-muted);font-size:8px;font-style:normal}.account-form input,.account-form select,.account-section-select select{width:100%;min-height:50px;padding:0 14px;border:1px solid var(--line-dark);border-radius:11px;color:var(--ink);background:var(--surface);font:inherit}.account-form input:focus-visible,.account-form select:focus-visible,.account-section-select select:focus-visible{outline:2px solid var(--cyan-dark);outline-offset:2px}.account-form [aria-invalid=true]{border-color:var(--danger)}.account-form__year{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field-error{color:var(--danger);font-size:10px}.form-success{margin:0;color:var(--cyan-dark);font-size:11px}.account-form__controls>.button{align-self:flex-start;min-width:180px;margin-top:3px}.profile-identity-editor{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:16px;margin:0 0 24px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--surface-muted)}.profile-identity-editor>label{display:flex;flex-direction:column;gap:7px;color:var(--ink-2);font-size:11px}.profile-identity-editor input{width:100%;min-height:50px;padding:0 14px;border:1px solid var(--line-dark);border-radius:11px;color:var(--ink);background:var(--surface);font:inherit}.profile-identity-editor input:focus-visible{outline:2px solid var(--cyan-dark);outline-offset:2px}.profile-identity-editor__avatar-control{padding-top:18px}.profile-identity-editor__avatar-control .field-error{display:block;max-width:120px;margin-top:6px}.avatar-picker{margin:-7px 0 24px;padding:19px;border:1px solid var(--line-dark);border-radius:16px;background:var(--surface)}.avatar-picker__header{display:flex;align-items:center;gap:13px;margin-bottom:17px}.avatar-picker h2{margin:0 0 4px;font-size:16px}.avatar-picker p{margin:0;color:var(--ink-3);font-size:10px}.avatar-picker__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.avatar-picker__grid label{display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0;padding:8px 4px;border:1px solid var(--line);border-radius:10px;cursor:pointer}.avatar-picker__grid label.is-selected{border-color:var(--cyan-dark);background:color-mix(in srgb,var(--cyan) 12%,var(--surface))}.avatar-picker__grid input{position:absolute;opacity:0}.avatar-picker__grid label:has(input:focus-visible){outline:2px solid var(--cyan-dark);outline-offset:2px}.avatar-picker__grid span{overflow:hidden;max-width:100%;color:var(--ink-2);font-size:8px;text-overflow:ellipsis;white-space:nowrap}.avatar-picker__actions{display:flex;justify-content:flex-end;gap:9px;margin-top:17px}.avatar-picker__actions .button{min-width:0}.account-announcement{min-height:20px;margin:-12px 0 20px;color:var(--ink-2);font-size:11px}.account-announcement--success{color:var(--cyan-dark)}.account-announcement--error{color:var(--danger)}.binding-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:17px;padding:22px;border:1px solid var(--line);border-radius:17px;background:var(--surface-muted)}.binding-card__mark{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;color:#fff;background:#07c160;font-weight:700}.binding-card>div:nth-child(2){display:flex;flex-direction:column;gap:5px;min-width:0}.binding-card strong{font-size:14px}.binding-card span,.binding-card small{overflow:hidden;color:var(--ink-3);font-size:10px;text-overflow:ellipsis;white-space:nowrap}.share-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.share-card{display:flex;flex-direction:column;align-items:flex-start;min-height:310px;padding:22px;border:1px solid var(--line);border-radius:17px;background:var(--surface-muted)}.share-card__mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;color:#fff;font-weight:700}.share-card__mark--weibo{background:#e85b45}.share-card__mark--xiaohongshu{background:#ff2442}.share-card h2{margin:17px 0 8px;font-size:17px}.share-card>p{margin:0 0 18px;color:var(--ink-2);font-size:10px;line-height:1.7}.share-card .button{width:100%;min-height:45px;margin-top:auto;font-size:11px}.share-card__links{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.share-card__links a{color:var(--ink-2);font-size:9px;text-underline-offset:3px}.share-confirm{width:100%;margin-top:13px;padding:9px;border:0;border-radius:9px;color:#074d48;background:var(--cyan);font-size:10px;font-weight:650;cursor:pointer}.share-card .share-card__status{margin:12px 0 0;color:var(--cyan-dark)}.account-data-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--ink-2);text-align:center}.account-data-state [role=alert]{color:var(--danger)}.points-overview{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(220px,.7fr);gap:14px}.points-balance{display:flex;flex-direction:column;min-height:190px;padding:27px;border-radius:18px;color:#eaf7f5;background:radial-gradient(circle at 88% 18%,rgba(30,228,212,.18),transparent 32%),#131918}.points-balance>span{color:#92a09e;font-size:10px;letter-spacing:.08em}.points-balance>strong{margin:auto 0 8px;font:600 clamp(48px,7vw,70px)/1 "DM Mono",monospace;letter-spacing:-.06em}.points-balance>small{color:#84928f;font-size:9px}.points-overview dl{display:grid;grid-template-rows:repeat(2,1fr);gap:12px;margin:0}.points-overview dl div{display:flex;align-items:center;justify-content:space-between;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--surface-muted)}.points-overview dt{color:var(--ink-3);font-size:10px}.points-overview dd{margin:0;font:600 23px/1 DM Mono,monospace}.learning-progress{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;margin:18px 0 25px;padding:18px 20px;border:1px solid var(--line);border-radius:16px}.learning-progress>div:not(.cycle-dots){display:flex;flex-direction:column;gap:5px}.learning-progress strong{font-size:13px}.learning-progress span{color:var(--ink-3);font-size:9px}.cycle-dots{grid-column:1 / -1;display:grid;grid-template-columns:repeat(7,1fr);gap:7px}.cycle-dots i{height:5px;border-radius:4px;background:var(--surface-muted)}.cycle-dots i.is-complete{background:var(--cyan-dark)}.point-task-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.point-task-card{display:flex;flex-direction:column;min-height:175px;padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.point-task-card:last-child{grid-column:1 / -1}.point-task-card>div{display:flex;align-items:center;justify-content:space-between}.point-task-card>div span{color:var(--ink-3);font:600 8px/1 DM Mono,monospace;letter-spacing:.12em}.point-task-card>div b{color:var(--cyan-dark);font:600 14px/1 DM Mono,monospace}.point-task-card h2{margin:24px 0 7px;font-size:14px}.point-task-card p{margin:0;color:var(--ink-2);font-size:10px;line-height:1.65}.point-task-card>small{margin-top:auto;padding-top:14px;color:var(--ink-3);font-size:9px}.point-task-card.is-claimed{background:color-mix(in srgb,var(--cyan) 5%,var(--surface))}.point-task-card.is-claimed>small{color:var(--cyan-dark)}.point-ledger{margin-top:30px;padding-top:25px;border-top:1px solid var(--line)}.point-ledger>header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:12px}.point-ledger h2{margin:8px 0 0;font-size:21px}.point-ledger>header>small{color:var(--ink-3);font-size:9px}.point-ledger__rows{border-top:1px solid var(--line)}.point-ledger__row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 4px;border-bottom:1px solid var(--line)}.point-ledger__row>span{display:flex;flex-direction:column;gap:5px}.point-ledger__row strong{font-size:11px}.point-ledger__row small{color:var(--ink-3);font-size:9px}.point-ledger__row>b{font:600 14px/1 DM Mono,monospace}.point-ledger__row .is-positive{color:var(--cyan-dark)}.point-ledger__row .is-negative{color:var(--danger)}.point-ledger__empty{padding:28px 15px;border:1px dashed var(--line-dark);border-radius:13px;color:var(--ink-3);text-align:center;font-size:10px}.point-ledger__more{width:100%;margin-top:14px}.membership-status{display:flex;flex-direction:column;gap:7px;padding:24px;border:1px solid var(--line);border-radius:18px;color:var(--ink);background:var(--surface-muted)}.membership-status.is-active{border-color:#d8b85e;background:#fff9e9;box-shadow:inset 4px 0 #d3a442}.membership-status.is-active.membership-status--maritime{color:var(--cyan-dark)}.membership-status>span{color:var(--ink-3);font:600 8px/1 DM Mono,monospace;letter-spacing:.13em}.membership-status.is-active>span{color:#8a651d}.membership-status>strong{margin-top:13px;font-size:clamp(19px,3vw,27px)}.membership-status>small{color:var(--ink-3);font-size:9px}.vip-celebration{position:relative;isolation:isolate;margin-top:16px;overflow:hidden;border:1px solid #d8b85e;border-radius:18px;background:linear-gradient(135deg,#fff9e9,var(--surface))}.vip-celebration__motion{position:absolute;z-index:0;inset:0;overflow:hidden;pointer-events:none}.vip-celebration__glow{position:absolute;top:-68px;left:50%;width:180px;height:180px;border-radius:50%;background:#f3cb61;filter:blur(20px);opacity:.3;transform:translate(-50%) scale(.45);animation:vip-celebration-glow 1.5s ease-out both}.vip-celebration__particle{position:absolute;width:7px;height:7px;border-radius:999px;background:#d3a442;opacity:0;animation:vip-celebration-particle 1.5s ease-out both}.vip-celebration__particle--1{top:26%;left:14%}.vip-celebration__particle--2{top:63%;left:25%;animation-delay:.08s}.vip-celebration__particle--3{top:18%;left:39%;animation-delay:.14s}.vip-celebration__particle--4{top:58%;right:32%;animation-delay:.04s}.vip-celebration__particle--5{top:25%;right:19%;animation-delay:.12s}.vip-celebration__particle--6{top:70%;right:12%;animation-delay:.18s}.vip-celebration__card{position:relative;z-index:1;display:grid;gap:7px;padding:18px 20px;color:var(--cyan-dark)}.vip-celebration__card h2,.vip-celebration__card p{margin:0}.vip-celebration__card h2{font-size:19px}.vip-celebration__card p{color:var(--ink-2);font-size:11px}.vip-celebration__card p strong{color:var(--cyan-dark);font-family:DM Mono,monospace}.vip-celebration__card small{color:var(--ink-3);font-size:10px}@keyframes vip-celebration-glow{0%{opacity:0;transform:translate(-50%) scale(.35)}to{opacity:.3;transform:translate(-50%) scale(1)}}@keyframes vip-celebration-particle{0%{opacity:0;transform:translateY(15px) scale(.5)}24%{opacity:.9}to{opacity:0;transform:translateY(-36px) scale(1)}}.membership-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}.membership-product{display:flex;flex-direction:column;min-height:310px;padding:23px;border:1px solid var(--line);border-radius:17px;background:var(--surface-muted)}.membership-product h2{margin:17px 0 22px;font-size:16px}.membership-product>div{display:flex;align-items:baseline;gap:6px}.membership-product>div strong{font:600 48px/1 DM Mono,monospace;letter-spacing:-.05em}.membership-product>div span{color:var(--ink-3);font-size:10px}.membership-product>p{margin:14px 0 24px;color:var(--ink-2);font-size:10px}.membership-product>p b{color:var(--ink);font:600 14px/1 DM Mono,monospace}.membership-product .button{width:100%;margin-top:auto}.membership-product__reason{display:block;min-height:28px;margin-top:10px;color:var(--ink-3);font-size:9px;line-height:1.5;text-align:center}.redemption-confirm p{color:var(--ink-2);font-size:12px;line-height:1.75}.redemption-confirm p strong{color:var(--ink)}.redemption-confirm__actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:24px}.account-menu__summary--state{display:block;color:var(--ink-3);line-height:1.5}.account-menu__summary--state[role=alert]{color:var(--danger)}.account-placeholder{display:flex;flex-direction:column;justify-content:center}@keyframes pulse{50%{opacity:.45;box-shadow:0 0 30px var(--cyan)}}@keyframes route{to{stroke-dashoffset:-160}}@keyframes radar{0%{transform:scale(.25);opacity:.8}to{transform:scale(1.8);opacity:0}}@keyframes rise{0%{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:930px){.auth-page{grid-template-columns:1fr}.auth-visual{display:none}.auth-panel{justify-content:flex-start;padding:24px 24px 28px;background:radial-gradient(circle at 90% 5%,rgba(30,228,212,.1),transparent 27%),var(--surface)}.mobile-brand{display:block;margin-bottom:8vh}.auth-card{margin:0 auto}.auth-footer{margin-top:auto;padding-top:50px}.onboarding__grid{grid-template-columns:1fr}.dashboard__grid{grid-template-columns:1fr 1fr}.ai-card{grid-column:1 / -1}.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.account-page{grid-template-columns:180px minmax(0,1fr);gap:25px}}@media(max-width:650px){.auth-panel{min-height:100dvh;padding:20px 20px max(22px,env(safe-area-inset-bottom))}.mobile-brand{margin-bottom:clamp(45px,8vh,75px)}.mobile-brand .brand__mark{flex-basis:40px;width:40px;height:40px}.auth-card h1{font-size:30px}.auth-copy{margin-bottom:25px}.auth-footer span{display:none}.modal{padding:28px 24px}.onboarding{padding:20px 18px 45px}.onboarding__content{margin-top:58px}.onboarding__content>h1{font-size:35px}.onboarding__grid{gap:25px;margin-top:34px}.onboarding__actions{flex-direction:column}.onboarding__actions .button{width:100%}.app-header{grid-template-columns:1fr auto;height:62px;padding:0 18px}.app-header nav{display:none}.app-header .brand--compact .brand__type small{display:none}.account-menu--sheet{right:0;bottom:0;left:0;display:flex;flex-direction:column;width:100%;max-height:min(82dvh,650px);border-width:1px 0 0;border-radius:22px 22px 0 0}.account-menu__handle{display:block;width:36px;height:4px;margin:10px auto 1px;border-radius:4px;background:var(--line-dark)}.account-menu--sheet .account-menu__scroll{flex:1 1 auto;min-height:0}.account-menu__profile{padding-top:16px}.app-main{width:calc(100% - 32px);padding:40px 0 112px}.profile-identity-editor{grid-template-columns:auto minmax(0,1fr)}.profile-identity-editor__avatar-control{grid-column:1 / -1;padding-top:0}.avatar-picker__grid{grid-template-columns:repeat(3,minmax(0,1fr))}.bottom-nav{position:fixed;z-index:20;left:12px;right:12px;bottom:max(12px,env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(3,1fr);padding:7px;border:1px solid rgba(220,224,223,.8);border-radius:18px;background:color-mix(in srgb,var(--surface) 90%,transparent);box-shadow:0 12px 38px #0000001c;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.bottom-nav button{display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px;border:0;border-radius:12px;color:var(--ink-3);background:none;font-size:9px}.bottom-nav button.active{color:var(--ink);background:var(--surface-muted)}.bottom-nav button.active svg{color:var(--cyan-dark)}.dashboard__intro{align-items:flex-start}.course-chip{display:none}.dashboard__intro h1{font-size:38px}.home-vip-strip{align-items:flex-start;flex-wrap:wrap;margin-top:-14px}.home-vip-strip>a{width:100%;margin-left:0}.continue-card{display:block;min-height:350px;padding:31px 27px}.continue-card__radar{position:absolute;right:-38px;bottom:-65px;width:185px;height:185px;opacity:.65}.continue-card>div:first-child{max-width:85%}.continue-card h2{font-size:29px}.dashboard__grid{grid-template-columns:1fr}.ai-card{grid-column:auto}.data-card{min-height:210px}.library-page{gap:19px}.library-page__header{align-items:stretch;flex-direction:column;gap:19px}.library-page__header h1{font-size:37px}.library-search{flex-basis:auto;min-width:0;width:100%}.library-steps{border-radius:13px}.library-step{min-height:52px;gap:6px}.library-step>span{width:21px;height:21px}.library-step strong{font-size:10px}.library-grid{grid-template-columns:1fr}.library-card{min-height:150px}.library-actions{position:sticky;z-index:18;bottom:calc(88px + env(safe-area-inset-bottom));grid-template-columns:1fr auto;margin:0 -8px;padding:13px;border-radius:15px}.library-actions .button{min-width:132px}.library-actions .library-reset{grid-column:1 / -1;padding:2px 5px;text-align:center;font-size:10px}.library-actions__scope small{max-width:150px}.practice-page{gap:17px}.practice-page__header{align-items:flex-start}.practice-page__header h1{font-size:37px}.practice-page__header p{max-width:250px}.practice-progress{padding-top:27px}.practice-progress strong{font-size:18px}.practice-question{padding:24px 18px;border-radius:18px}.practice-question__stem{font-size:15px}.practice-question__stem h1,.practice-question__stem h2,.practice-question__stem h3{font-size:24px}.practice-option{grid-template-columns:auto auto minmax(0,1fr);gap:10px;padding:11px 12px}.practice-submit{width:100%}.practice-navigation .button{min-width:0;padding-inline:15px}.practice-finish{position:sticky;z-index:18;bottom:calc(88px + env(safe-area-inset-bottom));margin:0 -8px;padding:14px}.practice-finish span{max-width:160px}.practice-finish .button{min-width:122px;padding-inline:14px}.practice-summary dl{gap:0}.profile-card{padding:20px 17px}.profile-card .verified{display:none}.account-page{display:block}.account-sidebar{display:none}.account-section-select{display:flex;flex-direction:column;gap:7px;margin-bottom:14px;color:var(--ink-3);font-size:9px}.account-section-select>span{padding-left:3px}.account-section-select select{min-height:46px}.account-panel{min-height:420px;padding:25px 18px;border-radius:18px}.account-panel__header{gap:12px;margin-bottom:24px}.account-panel__header h1{font-size:33px}.points-overview{grid-template-columns:1fr}.points-overview dl{grid-template-columns:repeat(2,1fr);grid-template-rows:none}.points-overview dl div{align-items:flex-start;flex-direction:column;gap:8px;padding:16px}.point-task-grid,.membership-products{grid-template-columns:1fr}.point-task-card:last-child{grid-column:auto}.membership-product{min-height:280px}.redemption-confirm__actions{grid-template-columns:1fr}.profile-progress{padding:10px}.profile-progress strong{font-size:17px}.account-form__year,.share-grid{grid-template-columns:1fr}.account-form__controls>.button{width:100%}.binding-card{grid-template-columns:auto minmax(0,1fr);padding:17px}.binding-card .button{grid-column:1 / -1;width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.vip-celebration__particle,.vip-celebration__glow{animation:none!important;display:none}}
