@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.18.1"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#f0eadb;background:#07110f;font-synthesis:none;text-rendering:optimizeLegibility;--bg: #07110f;--bg-deep: #050c0b;--surface: #0a1714;--surface-raised: #0d1d19;--surface-soft: #10221d;--text: #f0eadb;--text-soft: #c1bdae;--text-muted: #8f998b;--line: #284038;--line-strong: #4a5b51;--accent: #e78b62;--accent-soft: #3c241d;--accent-contrast: #170b08;--link: #6cc7bd;--success: #86b991;--warning: #d2ad70;--danger: #e17d72;--focus: #8cd9cf;--serif: Georgia, "Times New Roman", serif;--mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;--header-height: 66px;--status-height: 46px;--atlas-left-rail-width: 270px}:root[data-theme=light]{color:#16201c;background:#fff;--bg: #ffffff;--bg-deep: #f4f6f2;--surface: #ffffff;--surface-raised: #f8faf7;--surface-soft: #eef3ed;--text: #16201c;--text-soft: #45524a;--text-muted: #667269;--line: #d3dcd4;--line-strong: #a9b6ad;--accent: #b94f2f;--accent-soft: #f6e1d8;--accent-contrast: #ffffff;--link: #176c68;--success: #327545;--warning: #866124;--danger: #a63c35;--focus: #176c68}*{box-sizing:border-box}html,body,#root{min-width:320px;min-height:100%;margin:0}html{background:var(--bg)}body{min-height:100dvh;overflow:hidden;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button,summary,select{-webkit-tap-highlight-color:transparent}button{color:inherit}a{color:var(--link)}button,a,input,select,textarea,summary{outline:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--focus)}button:disabled{cursor:not-allowed;opacity:.44}::selection{color:var(--accent-contrast);background:var(--accent)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-deep)}::-webkit-scrollbar-thumb{border:2px solid var(--bg-deep);border-radius:999px;background:var(--line-strong)}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-root{display:grid;height:100dvh;grid-template-rows:var(--header-height) minmax(0,1fr) var(--status-height);min-height:100dvh;overflow:hidden;background:var(--bg)}.view-root{min-height:0;overflow:hidden}.app-header{position:relative;z-index:30;display:grid;grid-template-columns:minmax(280px,1fr) auto minmax(280px,1fr);align-items:stretch;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 95%,transparent)}.brand-button{display:inline-flex;min-width:0;align-items:center;gap:10px;padding:0 22px;border:0;background:transparent;color:var(--text);cursor:pointer;font-family:var(--serif);font-size:20px;text-align:left}.brand-mark{display:block;flex:0 0 auto;border-radius:8px;object-fit:cover}.primary-nav{display:flex;align-items:stretch;gap:6px}.nav-item{position:relative;display:inline-flex;min-width:110px;align-items:center;justify-content:center;gap:7px;padding:0 15px;border:0;background:transparent;color:var(--text-soft);cursor:pointer;font-size:14px}.nav-item svg{display:none;width:17px;height:17px}.nav-item:after{position:absolute;right:14px;bottom:0;left:14px;height:2px;background:transparent;content:""}.nav-item:hover,.nav-item--active{color:var(--text)}.nav-item--active:after{background:var(--accent)}.header-actions{display:flex;min-width:0;align-items:center;justify-content:flex-end;gap:14px;padding:0 22px}.icon-button{display:inline-grid;width:38px;height:38px;flex:0 0 auto;place-items:center;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-soft);cursor:pointer}.icon-button:hover{border-color:var(--line);background:var(--surface-raised);color:var(--text)}.icon-button svg{width:19px;height:19px}.save-indicator{display:inline-flex;min-width:0;align-items:center;gap:8px;color:var(--text-soft);font-size:13px;white-space:nowrap}.save-dot{width:9px;height:9px;flex:0 0 auto;border:1px solid var(--link);border-radius:50%}.status-bar{position:relative;z-index:25;display:grid;grid-template-columns:auto auto auto minmax(220px,1fr) auto auto auto;align-items:center;gap:28px;padding:0 30px;border-top:1px solid var(--line);background:var(--bg-deep);color:var(--text-muted);font-size:12px}.status-bar span,.status-bar button,.status-bar a{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}.status-bar a{color:var(--text-muted);font-size:12px;text-decoration:none}.status-bar a:hover{color:var(--link)}.status-bar button{padding:0;border:0;background:transparent;color:var(--text-muted);cursor:pointer}.status-bar button:hover{color:var(--link)}.status-bar svg{width:16px;height:16px;color:var(--success)}.status-bar__boundary{justify-content:center;padding-left:24px;border-left:1px solid var(--line)}.status-bar__count{color:var(--text-soft)}.button{display:inline-flex;min-height:40px;align-items:center;justify-content:center;gap:8px;padding:9px 14px;border:1px solid var(--line-strong);border-radius:7px;cursor:pointer;font-size:13px;font-weight:650;text-decoration:none}.button svg{width:17px;height:17px}.button--primary{border-color:var(--accent);background:transparent;color:var(--accent)}.button--primary:hover{background:var(--accent);color:var(--accent-contrast)}.button--outline{border-color:var(--accent);background:transparent;color:var(--accent)}.button--outline:hover{background:var(--accent-soft)}.button--ghost{border-color:var(--line);background:transparent;color:var(--text-soft)}.button--ghost:hover{border-color:var(--line-strong);background:var(--surface-raised);color:var(--text)}.search-field{display:flex;min-height:43px;align-items:center;gap:9px;border:1px solid var(--line);border-radius:7px;background:var(--bg-deep);color:var(--text-muted)}.search-field:focus-within{border-color:var(--link)}.search-field svg{width:18px;height:18px;margin-left:12px;flex:0 0 auto}.search-field input{width:100%;min-width:0;padding:10px 12px 10px 0;border:0;background:transparent;color:var(--text);font-size:13px}.search-field input::placeholder{color:var(--text-muted)}.rail-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.rail-heading h2{margin:0;font-family:var(--serif);font-size:19px;font-weight:500}.rail-heading p{margin:5px 0 0;color:var(--text-muted);font-size:12px;letter-spacing:.03em}.explore-layout{display:grid;height:100%;grid-template-columns:minmax(272px,330px) minmax(470px,1fr) minmax(285px,340px);overflow:hidden}.problem-library{display:flex;min-width:0;flex-direction:column;overflow:hidden;border-right:1px solid var(--line);background:var(--bg)}.problem-library>.rail-heading{padding:26px 24px 14px}.problem-library>.search-field{margin:0 24px 12px}.library-filters{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0 24px 18px}.library-filters label{position:relative}.library-filters select{width:100%;min-height:40px;appearance:none;padding:8px 34px 8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--bg-deep);color:var(--text-soft);font-size:12px}.library-filters svg{position:absolute;top:12px;right:10px;width:16px;height:16px;pointer-events:none}.problem-list{position:relative;min-height:0;flex:1;overflow-y:auto;border-top:1px solid var(--line)}.problem-list:before{position:absolute;z-index:0;top:0;bottom:0;left:19px;width:1px;background:var(--accent);content:"";opacity:.7}.problem-row{position:relative;z-index:1;display:grid;width:100%;min-height:82px;grid-template-columns:20px minmax(0,1fr) auto;align-items:center;gap:10px;padding:15px 18px 15px 9px;border:0;border-bottom:1px solid var(--line);background:var(--bg);color:var(--text);cursor:pointer;text-align:left}.problem-row:hover{background:var(--surface)}.problem-row--active{background:var(--surface-raised)}.problem-row__marker{width:10px;height:10px;justify-self:center;border:1px solid var(--line-strong);border-radius:50%;background:var(--bg)}.problem-row--active .problem-row__marker{border-color:var(--accent);background:var(--accent)}.problem-row__body{display:flex;min-width:0;flex-direction:column;gap:6px}.problem-row__body strong{overflow:hidden;font-family:var(--serif);font-size:17px;font-weight:500;text-overflow:ellipsis;white-space:nowrap}.problem-row__body span{overflow:hidden;color:var(--text-muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.problem-row__status{color:var(--accent);font-size:12px}.empty-state{display:grid;min-height:180px;place-items:center;align-content:center;gap:7px;padding:24px;color:var(--text-muted);text-align:center}.empty-state svg{width:24px;height:24px}.empty-state strong{color:var(--text-soft)}.empty-state span{font-size:12px}.library-provenance{padding:14px 24px 18px;border-top:1px solid var(--line);background:var(--bg-deep)}.library-provenance p{margin:0 0 8px;color:var(--text-muted);font-size:12px;line-height:1.5}.library-provenance a{display:inline-flex;align-items:center;gap:6px;font-size:12px;text-decoration:none}.library-provenance>div{display:flex;flex-wrap:wrap;gap:8px 12px}.library-provenance a:hover{text-decoration:underline}.library-provenance svg{width:12px;height:12px}.problem-workspace{min-width:0;overflow-y:auto;padding:28px 34px 34px;background:linear-gradient(color-mix(in srgb,var(--line) 7%,transparent) 1px,transparent 1px) 0 0 / 100% 28px,var(--bg)}.problem-heading{max-width:820px}.problem-heading h1{margin:0 0 11px;font-family:var(--serif);font-size:clamp(34px,3.4vw,50px);font-weight:500;letter-spacing:-.025em;line-height:1.04}.problem-heading p{max-width:760px;margin:0;color:var(--text-soft);font-family:var(--serif);font-size:clamp(17px,1.5vw,22px);line-height:1.45}.problem-metadata{display:grid;max-width:820px;margin:20px 0 16px;grid-template-columns:1fr}.problem-metadata>div{display:grid;min-height:30px;grid-template-columns:150px minmax(0,1fr);align-items:center;border-bottom:1px solid var(--line)}.problem-metadata dt,.problem-metadata dd{margin:0;font-size:13px}.problem-metadata dt{color:var(--text-muted)}.problem-metadata dd{color:var(--text-soft)}.problem-metadata dd.accent-text{color:var(--accent)}.problem-metadata a{display:inline-flex;align-items:center;gap:7px;text-decoration:none}.problem-metadata a:hover{text-decoration:underline}.problem-metadata svg{width:13px;height:13px}.formula-canvas{position:relative;display:grid;min-height:186px;max-width:820px;place-items:center;overflow:auto hidden;padding:32px 30px 26px 55px;border:1px solid var(--line);border-radius:6px;background:linear-gradient(to right,color-mix(in srgb,var(--line) 26%,transparent) 1px,transparent 1px) 0 0 / 18px 18px,linear-gradient(to bottom,color-mix(in srgb,var(--line) 26%,transparent) 1px,transparent 1px) 0 0 / 18px 18px,var(--bg-deep)}.formula-canvas:before{position:absolute;top:0;bottom:0;left:44px;width:1px;background:var(--accent);content:"";opacity:.56}.margin-dots{position:absolute;top:18px;left:13px;display:grid;gap:6px}.margin-dots i{width:7px;height:7px;border-radius:50%;background:var(--accent)}.formula{color:var(--link)}.formula--display{display:block;min-width:max-content}.formula--display .katex-display{margin:0}.formula-canvas .katex{font-size:clamp(1.15rem,2.1vw,2rem)}.formula-error{display:block;color:var(--danger);font-family:var(--mono);white-space:pre-wrap}.literacy-panel{max-width:820px;margin-top:14px;padding:0 20px 20px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.literacy-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}.literacy-tab{position:relative;min-height:54px;border:0;background:transparent;color:var(--text-soft);cursor:pointer;font-size:13px}.literacy-tab:after{position:absolute;right:0;bottom:-1px;left:0;height:2px;background:transparent;content:""}.literacy-tab--active{color:var(--text)}.literacy-tab--active:after{background:var(--accent)}.literacy-copy{padding:18px 0 8px}.literacy-copy h2,.milestones h2{margin:0 0 8px;font-family:var(--serif);font-size:21px;font-weight:500}.literacy-copy p{margin:0;color:var(--text-soft);font-family:var(--serif);font-size:15px;line-height:1.62}.milestones{padding:10px 0 18px}.milestones ol{position:relative;margin:0;padding:0 0 0 8px;list-style:none}.milestones ol:before{position:absolute;top:4px;bottom:4px;left:4px;width:1px;background:var(--accent);content:""}.milestones li{position:relative;display:grid;grid-template-columns:58px minmax(0,1fr);gap:10px;padding:5px 0 5px 20px}.milestones li:before{position:absolute;top:10px;left:0;width:9px;height:9px;border:1px solid var(--accent);border-radius:50%;background:var(--surface);content:""}.milestones li span{color:var(--accent);font-family:var(--mono);font-size:12px}.milestones li p{margin:0;color:var(--text-soft);font-size:12px;line-height:1.5}.reading-panel{min-width:0;overflow-y:auto;padding:27px 28px;border-left:1px solid var(--line);background:var(--bg)}.reading-panel>h2{margin:0 0 28px;font-family:var(--serif);font-size:20px;font-weight:500}.reading-progress-heading{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.reading-progress-heading h3,.sources-section h3,.drafts-section h3{margin:0;font-size:13px;font-weight:600}.reading-progress-heading span{color:var(--text-muted);font-size:12px}.reading-checklist{display:grid;gap:14px;padding:17px 0 24px;border-bottom:1px solid var(--line)}.reading-checklist label{display:grid;grid-template-columns:18px minmax(0,1fr);align-items:center;gap:10px;color:var(--text-soft);cursor:pointer;font-size:12px}.reading-checklist input,.revision-row input{position:absolute;opacity:0;pointer-events:none}.custom-checkbox{display:grid;width:18px;height:18px;place-items:center;border:1px solid var(--line-strong);border-radius:4px}.reading-checklist input:checked+.custom-checkbox{border-color:var(--accent);color:var(--accent)}.custom-checkbox svg{width:13px;height:13px}.sources-section,.drafts-section{display:grid;gap:13px;padding:24px 0;border-bottom:1px solid var(--line)}.sources-section>a{display:grid;grid-template-columns:38px minmax(0,1fr);gap:11px;text-decoration:none}.source-monogram{display:grid;width:38px;height:38px;place-items:center;border:1px solid var(--line-strong);border-radius:5px;color:var(--text-soft);font-family:var(--serif);font-size:12px}.sources-section>a>span:last-child,.drafts-section button>span{display:flex;min-width:0;flex-direction:column;gap:4px}.sources-section strong{display:inline-flex;align-items:center;gap:6px;color:var(--link);font-size:12px;font-weight:500}.sources-section strong svg{width:12px;height:12px}.sources-section small,.drafts-section small{color:var(--text-muted);font-size:12px;line-height:1.4}.drafts-section>button:not(.button){display:grid;grid-template-columns:27px minmax(0,1fr);align-items:center;gap:10px;padding:8px 0;border:0;background:transparent;color:var(--text);cursor:pointer;text-align:left}.drafts-section>button:not(.button)>svg{width:22px;height:22px;padding:3px;border:1px solid var(--line);border-radius:4px;color:var(--text-soft)}.drafts-section strong{overflow:hidden;font-size:12px;font-weight:500;text-overflow:ellipsis;white-space:nowrap}.drafts-section .button{width:fit-content}.muted-copy{margin:0;color:var(--text-muted);font-size:12px}.mobile-problem-picker,.mobile-notes-disclosure,.problem-library--drawer,.mobile-drawer-backdrop{display:none}.notebook-layout{display:grid;height:100%;grid-template-columns:305px minmax(540px,1fr) 282px;overflow:hidden}.notebook-list{display:flex;min-width:0;flex-direction:column;overflow:hidden;padding:24px;border-right:1px solid var(--line);background:var(--bg)}.notebook-list__heading{display:grid;gap:14px}.notebook-list__heading h2{margin:0;font-family:var(--serif);font-size:20px;font-weight:500}.notebook-list__heading p{margin:4px 0 0;color:var(--text-muted);font-size:12px}.notebook-list__heading .button{width:100%}.notebook-list>.search-field{margin:16px 0}.notebook-metrics{display:grid;grid-template-columns:repeat(3,1fr);border-block:1px solid var(--line)}.notebook-metrics span{display:flex;min-width:0;flex-direction:column;gap:3px;padding:11px 5px;color:var(--text-muted);font-size:12px;text-align:center}.notebook-metrics span+span{border-left:1px solid var(--line)}.notebook-metrics strong{color:var(--text);font-family:var(--serif);font-size:18px;font-weight:500}.note-list{min-height:0;margin:16px -8px 0;flex:1;overflow-y:auto}.note-row{display:grid;width:100%;grid-template-columns:21px minmax(0,1fr);align-items:start;gap:9px;padding:14px 12px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--text);cursor:pointer;text-align:left}.note-row:hover{background:var(--surface)}.note-row--active{border-color:var(--accent);background:var(--surface-raised)}.note-row>svg{width:17px;height:17px;color:var(--text-soft)}.note-row>span{display:flex;min-width:0;flex-direction:column;gap:5px}.note-row strong{overflow:hidden;font-size:12px;font-weight:550;text-overflow:ellipsis;white-space:nowrap}.note-row small{color:var(--text-muted);font-size:12px}.editor-workspace{display:grid;min-width:0;grid-template-rows:auto auto minmax(0,1fr);overflow:hidden;background:var(--bg)}.editor-title-row{display:grid;gap:12px;padding:20px 22px 14px;border-bottom:1px solid var(--line)}.editor-title-row>label input{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--text);font-family:var(--serif);font-size:22px}.editor-metadata-controls{display:flex;align-items:end;gap:18px}.editor-metadata-controls label{display:grid;gap:5px;color:var(--text-muted);font-size:12px}.editor-metadata-controls select{min-width:230px;padding:8px 30px 8px 10px;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep);color:var(--text-soft);font-size:12px}.local-draft-status,.local-compute-label{display:inline-flex;align-items:center;gap:7px;min-height:34px;padding:7px 10px;border:1px solid var(--line);border-radius:5px;color:var(--text-soft);font-size:12px}.local-draft-status svg,.local-compute-label svg{width:15px;height:15px}.editor-toolbar{display:flex;min-width:0;flex-wrap:wrap;align-items:center;gap:10px;padding:10px 18px;border-bottom:1px solid var(--line);background:var(--bg-deep)}.mode-switch,.symbol-toolbar,.editor-actions{display:flex;align-items:stretch}.mode-switch,.symbol-toolbar{border:1px solid var(--line);border-radius:5px}.toolbar-button,.symbol-toolbar button{display:inline-flex;min-height:35px;align-items:center;justify-content:center;gap:6px;padding:7px 10px;border:0;border-right:1px solid var(--line);background:transparent;color:var(--text-soft);cursor:pointer;font-size:12px}.toolbar-button:last-child,.symbol-toolbar button:last-child{border-right:0}.toolbar-button svg{width:14px;height:14px}.toolbar-button--active{box-shadow:inset 0 -2px var(--accent);color:var(--accent)}.toolbar-button--recording{color:var(--danger)}.symbol-toolbar button{width:38px;padding:7px;color:var(--link);font-family:var(--serif);font-size:17px}.editor-actions{gap:8px;margin-left:auto}.editor-actions .button{min-height:35px;padding:7px 11px;font-size:12px}.export-menu{position:relative}.export-menu summary{min-height:35px;list-style:none}.export-menu summary::-webkit-details-marker{display:none}.export-menu[open]>summary{border-color:var(--accent)}.export-menu>div{position:absolute;z-index:20;top:calc(100% + 7px);right:0;display:grid;min-width:190px;padding:6px;border:1px solid var(--line);border-radius:6px;background:var(--surface-raised)}.export-menu>div button{display:flex;align-items:center;gap:8px;padding:9px;border:0;border-radius:4px;background:transparent;color:var(--text-soft);cursor:pointer;font-size:12px;text-align:left}.export-menu>div button:hover{background:var(--surface-soft);color:var(--text)}.export-menu>div svg{width:15px;height:15px}.editor-panes{display:grid;min-height:0;overflow:hidden}.editor-panes--split{grid-template-columns:1fr 1fr}.editor-panes--write,.editor-panes--preview{grid-template-columns:1fr}.source-pane,.preview-pane{display:grid;min-width:0;min-height:0;grid-template-rows:42px minmax(0,1fr);overflow:hidden}.source-pane{border-right:1px solid var(--line)}.pane-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 15px;border-bottom:1px solid var(--line);background:var(--surface);color:var(--text-soft);font-size:12px;font-weight:600}.pane-heading>span:last-child{color:var(--text-muted);font-size:12px;font-weight:400}.source-pane textarea{width:100%;height:100%;resize:none;padding:18px;border:0;background:linear-gradient(color-mix(in srgb,var(--line) 10%,transparent) 1px,transparent 1px) 0 0 / 100% 26px,var(--bg-deep);color:#8dd1c8;font-family:var(--mono);font-size:12px;line-height:1.7;tab-size:2}.preview-pane,.preview-pane .pane-heading{background:var(--surface)}.syntax-valid,.syntax-invalid{display:inline-flex;align-items:center;gap:6px}.syntax-valid{color:var(--success)!important}.syntax-invalid{color:var(--danger)!important}.syntax-valid svg,.syntax-invalid svg{width:13px;height:13px}.latex-preview{min-width:0;overflow-y:auto;padding:28px 34px 60px;font-family:var(--serif)}.latex-preview h2{margin:0 0 20px;font-size:28px;font-weight:500;line-height:1.2}.latex-preview h3{margin:24px 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);color:var(--text);font-size:21px;font-weight:500}.latex-preview h4{margin:22px 0 10px;font-size:17px;font-weight:500}.latex-preview p{margin:0 0 14px;color:var(--text-soft);font-size:14px;line-height:1.75}.latex-preview .formula--display{margin:22px 0;overflow-x:auto;padding:18px 8px;border-block:1px solid var(--line);color:var(--text)}.revision-panel{display:flex;min-width:0;flex-direction:column;gap:12px;overflow-y:auto;padding:24px;border-left:1px solid var(--line);background:var(--bg)}.revision-panel__heading>div{display:flex;align-items:center;gap:8px}.revision-panel__heading svg{width:17px;height:17px;color:var(--accent)}.revision-panel__heading h2{margin:0;font-family:var(--serif);font-size:19px;font-weight:500}.revision-panel__heading p{margin:8px 0 0;color:var(--text-muted);font-size:12px}.revision-summary-field{display:grid;gap:6px;padding:10px 0;color:var(--text-muted);font-size:12px}.revision-summary-field input{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep);color:var(--text);font-size:12px}.revision-list{display:grid;gap:8px}.revision-row{display:grid;grid-template-columns:18px minmax(0,1fr);gap:9px;padding:11px;border:1px solid var(--line);border-radius:5px;cursor:pointer}.revision-row--selected{border-color:var(--accent);background:var(--surface)}.revision-row .custom-checkbox{width:16px;height:16px}.revision-row>span:last-child{display:grid;grid-template-columns:auto 1fr;gap:3px 7px}.revision-row strong{color:var(--accent);font-family:var(--mono);font-size:12px}.revision-row span span{color:var(--text-soft);font-size:12px}.revision-row small{grid-column:1 / -1;color:var(--text-muted);font-size:12px}.revision-panel>.button{width:100%}.research-boundary{margin:10px -24px -24px;padding:22px 24px;border-top:1px solid var(--line);background:var(--bg-deep)}.research-boundary h3{margin:0 0 10px;font-family:var(--serif);font-size:16px;font-weight:500}.research-boundary p{margin:0;color:var(--text-muted);font-family:var(--serif);font-size:12px;line-height:1.65}.notebook-empty{display:grid;height:100%;place-items:center;align-content:center;gap:10px;text-align:center}.notebook-empty>svg{width:36px;height:36px;color:var(--accent)}.notebook-empty h1,.notebook-empty p{margin:0}.notebook-empty h1{font-family:var(--serif);font-weight:500}.notebook-empty p{color:var(--text-muted)}.lab-view,.discussions-view{height:100%;overflow-y:auto;background:linear-gradient(color-mix(in srgb,var(--line) 7%,transparent) 1px,transparent 1px) 0 0 / 100% 30px,var(--bg)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 30px;border-bottom:1px solid var(--line);background:var(--bg)}.section-heading>div{display:flex;align-items:center;gap:13px}.section-heading>div>svg{width:28px;height:28px;color:var(--accent)}.section-heading h1{margin:0;font-family:var(--serif);font-size:28px;font-weight:500}.section-heading p{margin:4px 0 0;color:var(--text-muted);font-size:12px}.lab-layout{display:grid;min-height:calc(100% - 89px);grid-template-columns:300px minmax(0,1fr)}.plugin-library{min-width:0;padding:24px;border-right:1px solid var(--line);background:var(--bg)}.plugin-library>.rail-heading{margin-bottom:18px}.plugin-row{display:grid;width:100%;grid-template-columns:24px minmax(0,1fr);gap:10px;margin-bottom:7px;padding:13px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--text);cursor:pointer;text-align:left}.plugin-row:hover{background:var(--surface)}.plugin-row--active{border-color:var(--accent);background:var(--surface-raised)}.plugin-row>svg{width:18px;height:18px;color:var(--link)}.plugin-row>span{display:flex;min-width:0;flex-direction:column;gap:5px}.plugin-row strong{font-size:12px}.plugin-row small{color:var(--text-muted);font-size:12px}.plugin-security-note{display:grid;grid-template-columns:20px minmax(0,1fr);gap:9px;margin-top:22px;padding:14px 0;border-top:1px solid var(--line);color:var(--text-muted)}.plugin-security-note svg{width:18px;height:18px;color:var(--warning)}.plugin-security-note p{margin:0;font-size:12px;line-height:1.55}.lab-stage{min-width:0;padding:28px 34px 50px}.lab-stage__heading{display:flex;max-width:1040px;align-items:flex-start;justify-content:space-between;gap:20px;margin:0 auto 18px}.lab-stage__heading p{margin:0 0 5px;color:var(--accent);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.lab-stage__heading h2{margin:0 0 8px;font-family:var(--serif);font-size:30px;font-weight:500}.lab-stage__heading div>span{color:var(--text-muted);font-size:12px}.lab-plugin{max-width:1040px;margin:0 auto;padding:20px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}.lab-controls{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-bottom:18px;border-bottom:1px solid var(--line)}.lab-controls label{display:flex;min-width:260px;align-items:center;gap:10px;color:var(--text-soft);font-size:12px}.lab-controls input[type=range]{min-width:150px;accent-color:var(--accent)}.lab-controls input[type=number]{width:120px;padding:8px 10px;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep);color:var(--text)}.lab-controls output{min-width:38px;color:var(--accent);font-family:var(--mono)}.lab-controls p{margin:0;color:var(--text-muted);font-size:12px}.critical-strip{padding:24px 0 10px}.critical-strip__axis{display:grid;grid-template-columns:1fr 1fr 1fr;color:var(--text-muted);font-size:12px;text-align:center}.critical-strip__axis strong{color:var(--accent);font-weight:500}.critical-strip__plot{position:relative;height:320px;margin-top:10px;border:1px solid var(--line);background:linear-gradient(to right,color-mix(in srgb,var(--line) 22%,transparent) 1px,transparent 1px) 0 0 / 10% 100%,linear-gradient(to bottom,color-mix(in srgb,var(--line) 22%,transparent) 1px,transparent 1px) 0 0 / 100% 10%,var(--bg-deep)}.critical-line{position:absolute;top:0;bottom:0;left:50%;width:2px;background:var(--accent)}.zero-point{position:absolute;left:50%;display:flex;align-items:center;gap:8px;transform:translate(-5px,50%)}.zero-point i{width:10px;height:10px;border:2px solid var(--link);border-radius:50%;background:var(--bg-deep)}.zero-point small{color:var(--link);font-family:var(--mono);font-size:12px}.lab-plugin>.formula{display:block;margin-top:16px;text-align:center}.trajectory-chart{display:block;width:100%;max-height:340px;margin-top:20px;overflow:visible;border:1px solid var(--line);background:var(--bg-deep)}.trajectory-chart line{stroke:var(--line-strong);stroke-width:1}.trajectory-chart polyline{fill:none;stroke:var(--link);stroke-linecap:round;stroke-linejoin:round;stroke-width:2}.sequence-strip{display:flex;max-height:110px;flex-wrap:wrap;gap:5px;overflow-y:auto;padding-top:16px}.sequence-strip span{padding:4px 7px;border:1px solid var(--line);border-radius:4px;color:var(--text-soft);font-family:var(--mono);font-size:12px}.goldbach-scale{display:grid;gap:6px;max-height:340px;overflow-y:auto;padding:20px 0}.goldbach-scale>div{display:flex;height:24px}.goldbach-scale span{display:grid;min-width:24px;place-items:center;border:1px solid var(--bg);color:var(--accent-contrast);font-family:var(--mono);font-size:12px}.goldbach-scale span:first-child{background:var(--accent)}.goldbach-scale span:last-child{background:var(--link)}.pair-list{display:flex;flex-wrap:wrap;gap:6px;padding-top:14px;border-top:1px solid var(--line)}.pair-list code{padding:5px 8px;border:1px solid var(--line);border-radius:4px;color:var(--text-soft);font-size:12px}.complexity-table-wrap{overflow-x:auto;padding-top:20px}.complexity-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:12px}.complexity-table th,.complexity-table td{padding:12px;border:1px solid var(--line);text-align:right}.complexity-table thead th{background:var(--bg-deep);color:var(--accent)}.complexity-table tbody th{color:var(--link)}.lab-disclosure{display:grid;max-width:1040px;grid-template-columns:20px auto minmax(0,1fr);gap:9px;margin:15px auto 0;padding:12px 14px;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep);color:var(--text-muted)}.lab-disclosure svg{width:17px;height:17px;color:var(--warning)}.lab-disclosure strong{color:var(--text-soft);font-size:12px}.lab-disclosure p{margin:0;font-size:12px;line-height:1.5}.plugin-loading{display:grid;min-height:420px;place-items:center;border:1px solid var(--line);border-radius:7px;color:var(--text-muted)}.trust-banner{display:grid;max-width:1180px;grid-template-columns:25px minmax(0,1fr);gap:12px;margin:20px auto 0;padding:15px 18px;border:1px solid var(--warning);border-radius:6px;background:color-mix(in srgb,var(--warning) 8%,var(--bg))}.trust-banner>svg{width:22px;height:22px;color:var(--warning)}.trust-banner strong{font-size:12px}.trust-banner p{margin:4px 0 0;color:var(--text-soft);font-size:12px;line-height:1.55}.discussions-layout{display:grid;max-width:1180px;grid-template-columns:minmax(0,1fr) 360px;gap:22px;margin:20px auto 50px}.discussion-feed,.workspace-readiness{border:1px solid var(--line);border-radius:7px;background:var(--surface)}.feed-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px;border-bottom:1px solid var(--line)}.feed-toolbar .search-field{width:min(460px,100%)}.feed-toolbar>span{color:var(--text-muted);font-size:12px}.inline-notice{display:flex;align-items:center;gap:8px;margin:12px 15px 0;padding:9px 12px;border:1px solid var(--success);border-radius:5px;color:var(--success);font-size:12px}.inline-notice svg{width:16px;height:16px}.discussion-list{display:grid}.discussion-row{padding:20px;border-bottom:1px solid var(--line)}.discussion-row:last-child{border-bottom:0}.discussion-row__meta,.discussion-row__footer{display:flex;align-items:center;justify-content:space-between;gap:12px}.discussion-row__meta time{color:var(--text-muted);font-size:12px}.demo-label,.local-label{padding:4px 7px;border:1px solid var(--line);border-radius:4px;color:var(--text-muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase}.local-label{border-color:var(--success);color:var(--success)}.discussion-row h2{margin:12px 0 8px;font-family:var(--serif);font-size:20px;font-weight:500}.discussion-row>p{margin:0;color:var(--text-soft);font-size:12px;line-height:1.65}.discussion-row__footer{margin-top:15px;color:var(--text-muted);font-size:12px}.discussion-row__footer a{display:inline-flex;align-items:center;gap:5px;text-decoration:none}.discussion-row__footer svg{width:11px;height:11px}.workspace-readiness{align-self:start;overflow:hidden}.workspace-readiness__heading{display:grid;grid-template-columns:27px minmax(0,1fr);gap:11px;padding:18px;border-bottom:1px solid var(--line)}.workspace-readiness__heading>svg{width:24px;height:24px;color:var(--accent)}.workspace-readiness__heading h2{margin:0;font-family:var(--serif);font-size:18px;font-weight:500}.workspace-readiness__heading p{margin:5px 0 0;color:var(--text-muted);font-size:12px;line-height:1.45}.deployment-modules{display:grid}.deployment-modules article{display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;padding:15px 18px;border-bottom:1px solid var(--line)}.deployment-modules article>svg{width:18px;height:18px;color:var(--link)}.deployment-modules h3{margin:0 0 5px;font-size:12px}.deployment-modules p{margin:0 0 7px;color:var(--text-muted);font-size:12px;line-height:1.5}.deployment-modules small{color:var(--accent);font-size:12px}.workspace-readiness>.button{width:calc(100% - 36px);margin:18px}.dialog-backdrop,.mobile-drawer-backdrop{position:fixed;z-index:100;inset:0;display:grid;place-items:center;padding:20px;background:#000000a8}.vault-dialog,.discussion-composer,.compare-dialog{width:min(100%,520px);max-height:calc(100dvh - 40px);overflow-y:auto;padding:22px;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface-raised);box-shadow:0 24px 70px #00000059}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-heading>div{display:flex;align-items:center;gap:10px}.dialog-heading>div>svg{width:22px;height:22px;color:var(--accent)}.dialog-heading h2{margin:0;font-family:var(--serif);font-size:21px;font-weight:500}.vault-dialog>p,.composer-boundary{margin:14px 0;color:var(--text-muted);font-size:12px;line-height:1.55}.vault-dialog>label,.discussion-composer>label{display:grid;gap:6px;margin-top:13px;color:var(--text-soft);font-size:12px}.vault-dialog input,.discussion-composer input,.discussion-composer select,.discussion-composer textarea{width:100%;padding:10px 11px;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep);color:var(--text)}.discussion-composer textarea{resize:vertical;line-height:1.5}.form-error{margin:10px 0 0!important;color:var(--danger)!important}.dialog-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}.discussion-composer .dialog-heading>span{color:var(--success);font-size:12px}.compare-dialog{width:min(100%,1040px)}.comparison-panes{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.comparison-panes article{min-width:0;border:1px solid var(--line);border-radius:5px;background:var(--bg-deep)}.comparison-panes h3{margin:0;padding:13px 14px 4px;font-size:12px}.comparison-panes small{display:block;padding:0 14px 12px;color:var(--text-muted);font-size:12px}.comparison-panes pre{max-height:55dvh;margin:0;overflow:auto;padding:14px;border-top:1px solid var(--line);color:var(--text-soft);font-family:var(--mono);font-size:12px;line-height:1.55;white-space:pre-wrap}@media(max-width:1180px){.app-header{grid-template-columns:minmax(230px,1fr) auto minmax(210px,1fr)}.brand-button{padding-inline:16px;font-size:17px}.nav-item{min-width:92px;padding-inline:10px}.header-actions{padding-inline:16px}.explore-layout{grid-template-columns:285px minmax(450px,1fr) 295px}.problem-workspace{padding-inline:26px}.reading-panel{padding-inline:20px}.notebook-layout{grid-template-columns:255px minmax(500px,1fr) 250px}.notebook-list,.revision-panel{padding:18px}.research-boundary{margin:10px -18px -18px;padding-inline:18px}.symbol-toolbar{display:none}.discussions-layout,.trust-banner{margin-right:24px;margin-left:24px}}@media(max-width:980px){.app-header{grid-template-columns:auto 1fr auto}.brand-button{width:52px;padding:0 7px}.brand-button span{display:none}.primary-nav{justify-content:center}.save-indicator{display:none}.nav-item svg{display:block}.explore-layout{grid-template-columns:270px minmax(450px,1fr)}.reading-panel{display:none}.mobile-notes-disclosure{display:block;max-width:820px;margin-top:14px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.mobile-notes-disclosure summary{display:flex;min-height:50px;align-items:center;justify-content:space-between;gap:12px;padding:0 15px;cursor:pointer;list-style:none}.mobile-notes-disclosure summary::-webkit-details-marker{display:none}.mobile-notes-disclosure summary span{display:inline-flex;align-items:center;gap:8px;font-size:12px}.mobile-notes-disclosure summary svg{width:17px;height:17px;color:var(--accent)}.mobile-notes-disclosure[open] summary>svg{transform:rotate(180deg)}.mobile-notes-disclosure .reading-panel-content{padding:20px;border-top:1px solid var(--line)}.notebook-layout{grid-template-columns:220px minmax(520px,1fr)}.revision-panel{display:none}.lab-layout{grid-template-columns:240px minmax(0,1fr)}.discussions-layout{grid-template-columns:1fr}.workspace-readiness{order:-1}.status-bar{grid-template-columns:auto auto 1fr}.status-bar__boundary,.status-bar__count{display:none!important}}@media(max-width:760px){:root{--header-height: 116px;--status-height: 44px}body{overflow:hidden}.app-header{grid-template-rows:62px 54px;grid-template-columns:1fr auto}.brand-button{width:auto;padding:0 14px;font-size:18px}.brand-button span{display:inline}.brand-mark{width:36px;height:36px}.header-actions{gap:4px;padding:0 8px}.header-actions .icon-button{width:44px;height:44px}.mobile-menu-button{display:inline-grid}.primary-nav{grid-row:2;grid-column:1 / -1;justify-content:stretch;gap:0;overflow:hidden;border-top:1px solid var(--line)}.nav-item{min-width:0;min-height:53px;flex:1 1 25%;padding-inline:5px;font-size:12px}.nav-item svg{display:none}.status-bar{display:flex;justify-content:center;padding:0 14px}.status-bar>span:nth-child(2),.status-bar>button{display:none}.status-bar>span:first-child:after{color:var(--text-muted);content:" · Saved on this device"}.explore-layout{display:block;overflow:hidden}.problem-library--desktop{display:none}.problem-workspace{height:100%;padding:20px 18px 30px}.mobile-problem-picker{position:relative;display:grid;height:54px;grid-template-columns:22px minmax(0,1fr) 18px;align-items:center;gap:10px;margin-bottom:22px;padding:0 13px;border:1px solid var(--line-strong);border-radius:7px;color:var(--text)}.mobile-problem-picker svg{width:20px;height:20px;color:var(--accent);pointer-events:none}.mobile-problem-picker select{width:100%;height:100%;appearance:none;border:0;background:transparent;color:var(--text);font-size:14px}.mobile-drawer-backdrop{display:block;padding:0}.problem-library--drawer{display:flex;width:min(88vw,360px);height:100%;box-shadow:20px 0 60px #0006}.problem-heading h1{font-size:clamp(36px,12vw,54px)}.problem-heading p{font-size:18px;line-height:1.45}.problem-metadata{grid-template-columns:repeat(3,1fr);margin-block:22px;border-block:1px solid var(--line)}.problem-metadata>div{display:block;min-width:0;padding:12px 8px;border-bottom:0}.problem-metadata>div+div{border-left:1px solid var(--line)}.problem-metadata>div:last-child{display:none}.problem-metadata dt,.problem-metadata dd{overflow-wrap:anywhere;font-size:12px}.problem-metadata dd{margin-top:5px;color:var(--text);font-family:var(--serif);font-size:15px}.formula-canvas{min-height:152px;padding:24px 16px}.formula-canvas:before,.margin-dots{display:none}.formula-canvas .katex{font-size:clamp(.86rem,4vw,1.2rem)}.literacy-panel{padding:0 14px 16px}.literacy-tab{min-height:50px;font-size:12px}.milestones{display:none}.literacy-panel .button{width:100%;min-height:46px}.mobile-notes-disclosure{margin-bottom:8px}.notebook-layout{display:block;height:100%;overflow-y:auto}.notebook-list{height:auto;padding:16px;overflow:visible;border-right:0;border-bottom:1px solid var(--line)}.notebook-list__heading{grid-template-columns:1fr auto;align-items:center}.notebook-list__heading .button{width:auto}.notebook-list>.search-field,.notebook-metrics{display:none}.note-list{display:flex;margin:12px 0 0;overflow-x:auto}.note-row{width:240px;flex:0 0 auto}.editor-workspace{min-height:calc(100% - 136px);overflow:visible}.editor-title-row{padding:16px}.editor-title-row>label input{font-size:20px}.editor-metadata-controls{display:grid;grid-template-columns:1fr;align-items:stretch}.editor-metadata-controls select{width:100%;min-width:0}.editor-toolbar{padding:10px}.mode-switch{flex:1}.toolbar-button{min-height:42px;flex:1}.editor-actions{width:100%;margin-left:0}.editor-actions>*{flex:1}.editor-actions .button,.export-menu summary{width:100%;min-height:42px}.editor-panes{min-height:600px;overflow:visible}.editor-panes--split{grid-template-columns:1fr;grid-template-rows:520px auto}.source-pane{border-right:0;border-bottom:1px solid var(--line)}.editor-panes--preview .preview-pane{min-height:600px}.latex-preview{overflow:visible;padding:24px 20px 50px}.section-heading{align-items:flex-start;padding:20px 18px}.section-heading h1{font-size:25px}.section-heading>div>svg{width:24px;height:24px}.section-heading>.button{min-width:42px;padding:9px;font-size:0}.section-heading>.button svg{margin:0}.lab-layout{display:block}.plugin-library{display:flex;gap:7px;overflow-x:auto;padding:14px 18px;border-right:0;border-bottom:1px solid var(--line)}.plugin-library>.rail-heading,.plugin-security-note{display:none}.plugin-row{width:180px;flex:0 0 auto;margin:0}.lab-stage{padding:22px 18px 40px}.lab-stage__heading{display:block}.local-compute-label{margin-top:13px}.lab-plugin{padding:14px}.lab-controls{display:grid}.lab-controls label{min-width:0;flex-wrap:wrap}.lab-controls input[type=range]{min-width:120px;flex:1}.critical-strip__plot{height:270px}.zero-point small{display:none}.lab-disclosure{grid-template-columns:20px 1fr}.lab-disclosure p{grid-column:2}.discussions-heading{align-items:center}.trust-banner,.discussions-layout{margin-right:14px;margin-left:14px}.feed-toolbar{align-items:stretch;flex-direction:column}.discussion-row__meta,.discussion-row__footer{align-items:flex-start;flex-direction:column}.comparison-panes{grid-template-columns:1fr}}@media(max-width:420px){.brand-button{font-size:16px}.brand-mark{width:32px;height:32px}.header-actions .icon-button{width:40px}.problem-workspace{padding-inline:14px}.problem-heading h1{font-size:39px}.problem-heading p{font-size:16px}.literacy-panel{padding-inline:8px}.literacy-tab{font-size:12px}.mobile-notes-disclosure .reading-panel-content{padding:16px}.dialog-backdrop{padding:10px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.catalog-mode-tabs,.audience-lens-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.catalog-mode-tab,.audience-lens{min-height:37px;border:0;border-right:1px solid var(--line);background:var(--bg-deep);color:var(--text-muted);cursor:pointer;font-family:var(--mono);font-size:12px;letter-spacing:.05em;text-transform:uppercase}.catalog-mode-tab:last-child,.audience-lens:last-child{border-right:0}.catalog-mode-tab--active,.audience-lens--active{background:var(--surface-soft);color:var(--accent)}.problem-library>.catalog-mode-tabs{margin-bottom:12px}.library-filters--stack{grid-template-columns:1fr;padding-bottom:12px}.collection-card{display:grid;gap:9px;margin:0 24px 13px;padding:13px;border:1px solid var(--line);border-left:3px solid var(--accent);background:var(--surface)}.collection-card>span{color:var(--accent);font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.collection-card>strong{font-family:var(--serif);font-size:18px;font-weight:500}.collection-card dl{display:grid;margin:0;grid-template-columns:1fr 1fr;gap:7px}.collection-card dl div{min-width:0}.collection-card dt{color:var(--text-muted);font-size:12px;text-transform:uppercase}.collection-card dd{overflow:hidden;margin:3px 0 0;color:var(--text-soft);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.collection-card a,.notebook-references a{color:var(--link);font-size:12px;text-decoration:none}.collection-card a{display:inline-flex;align-items:center;gap:5px}.collection-card a svg{width:11px}.collection-card>small{color:var(--text-muted);font-size:12px;line-height:1.4}.library-result-meta{display:flex;align-items:center;justify-content:space-between;padding:9px 24px;border-top:1px solid var(--line);color:var(--text-muted);font-family:var(--mono);font-size:12px}.library-result-meta button{display:inline-flex;align-items:center;gap:5px;border:0;background:transparent;color:var(--link);cursor:pointer;font-size:12px}.library-result-meta button svg{width:14px}.notebook-references{border-top:1px solid var(--line);background:var(--surface)}.notebook-references summary{display:flex;align-items:center;justify-content:space-between;padding:11px 24px;color:var(--text-soft);cursor:pointer;font-size:12px}.notebook-references summary svg{width:14px}.notebook-references a{display:grid;gap:3px;padding:8px 24px;border-top:1px solid var(--line)}.notebook-references a span{display:-webkit-box;overflow:hidden;color:var(--text-muted);font-size:12px;line-height:1.4;-webkit-box-orient:vertical;-webkit-line-clamp:2}.source-snapshot-banner{display:grid;max-width:920px;grid-template-columns:18px minmax(0,1fr) auto;align-items:center;gap:10px;margin-bottom:24px;padding:10px 12px;border:1px solid var(--line);background:var(--bg-deep);color:var(--text-muted)}.source-snapshot-banner>svg{width:16px;color:var(--accent)}.source-snapshot-banner p{margin:0;font-size:12px;line-height:1.45}.source-snapshot-banner strong{color:var(--text-soft)}.source-snapshot-banner a{display:inline-flex;align-items:center;gap:4px;color:var(--link);font-size:12px;text-decoration:none}.source-snapshot-banner a svg{width:12px}.problem-heading__eyebrow{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:10px}.problem-heading__eyebrow span{padding:4px 7px;border:1px solid var(--line);color:var(--text-muted);font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:8px 0 24px;border:1px solid var(--line);background:var(--line)}.evidence-grid section{padding:16px;background:var(--bg-deep)}.evidence-grid h2,.related-problems h2{margin:0 0 9px;color:var(--text-soft);font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.07em;text-transform:uppercase}.evidence-grid p,.evidence-grid li{color:var(--text-muted);font-size:12px;line-height:1.55}.evidence-grid p,.evidence-grid ul{margin:0}.evidence-grid ul{padding-left:17px}.related-problems{margin:0 0 24px;padding:14px 16px;border:1px solid var(--line);background:var(--surface)}.related-problems>div{display:flex;flex-wrap:wrap;gap:7px}.related-problems button{padding:7px 9px;border:1px solid var(--line);background:var(--bg-deep);color:var(--link);cursor:pointer;font-size:12px}.reading-panel-content>.audience-lens-tabs{margin:-1px 0 18px}.prerequisite-section,.glossary-section,.teaching-tool,.research-ledger{padding:0 0 20px;border-bottom:1px solid var(--line)}.prerequisite-section h3,.glossary-section h3,.teaching-tool h3,.research-ledger h3{margin:0 0 10px;color:var(--text-soft);font-size:12px;font-weight:500}.prerequisite-section ol{display:grid;gap:6px;margin:0 0 9px;padding-left:18px;color:var(--text-soft);font-size:12px}.prerequisite-section small{color:var(--text-muted);font-size:12px}.glossary-grid{display:grid;gap:6px}.glossary-term{border:1px solid var(--line);background:var(--bg-deep)}.glossary-term summary{padding:8px 10px;color:var(--link);cursor:pointer;font-family:var(--serif);font-size:12px}.glossary-term p{margin:0;padding:0 10px 7px;color:var(--text-soft);font-size:12px;line-height:1.5}.glossary-term a{display:block;padding:0 10px 9px;color:var(--text-muted);font-size:12px;text-decoration:none}.glossary-term svg{width:10px}.teaching-tool>div:first-child{display:flex;align-items:flex-start;gap:9px;margin-bottom:12px}.teaching-tool>div:first-child svg{width:20px;color:var(--accent)}.teaching-tool h3,.teaching-tool p{margin:0}.teaching-tool p{color:var(--text-muted);font-size:12px;line-height:1.45}.teaching-tool>.button{width:100%;justify-content:center}.lesson-export-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:8px}.lesson-export-actions button{display:flex;min-height:34px;align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);background:var(--bg-deep);color:var(--text-soft);cursor:pointer;font-size:12px}.lesson-export-actions button:last-child{grid-column:1 / -1}.lesson-export-actions button:disabled{cursor:not-allowed;opacity:.45}.lesson-export-actions svg{width:13px}.boundary-copy{margin-top:10px!important;padding-left:9px;border-left:2px solid var(--warning)}.research-ledger dl{display:grid;margin:0}.research-ledger dl div{display:grid;grid-template-columns:80px 1fr;padding:7px 0;border-bottom:1px solid var(--line);font-size:12px}.research-ledger dt{color:var(--text-muted)}.research-ledger dd{margin:0;color:var(--text-soft)}.voice-action{display:grid;gap:3px}.voice-action small{max-width:140px;color:var(--text-muted);font-size:12px;line-height:1.3}.lab-method-ledger{display:grid;max-width:1040px;grid-template-columns:repeat(3,1fr);margin:15px auto 0;border:1px solid var(--line);background:var(--bg-deep)}.lab-method-ledger div{padding:11px 13px;border-right:1px solid var(--line)}.lab-method-ledger div:last-child{border-right:0}.lab-method-ledger dt{margin-bottom:4px;color:var(--accent);font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.lab-method-ledger dd{margin:0;color:var(--text-muted);font-size:12px;line-height:1.45}.lab-method-ledger a{color:var(--link)}.twin-prime-strip{position:relative;height:110px;margin:22px 0;border:1px solid var(--line);background:linear-gradient(to right,color-mix(in srgb,var(--line) 25%,transparent) 1px,transparent 1px) 0 0 / 10% 100%,var(--bg-deep)}.twin-prime-strip:after{position:absolute;right:0;bottom:8px;left:0;height:1px;background:var(--line-strong);content:""}.twin-prime-strip span{position:absolute;z-index:1;bottom:5px;width:5px;height:18px;border-radius:3px 3px 0 0;background:var(--accent)}.lab-readout-grid{display:grid;grid-template-columns:1fr 1fr;margin-bottom:16px;border:1px solid var(--line)}.lab-readout-grid div{display:grid;gap:5px;padding:12px;border-right:1px solid var(--line)}.lab-readout-grid div:last-child{border-right:0}.lab-readout-grid span,.equation-check span,.equation-check small{color:var(--text-muted);font-size:12px}.lab-readout-grid strong,.equation-check strong{color:var(--text);font-family:var(--mono);font-size:12px}.cuboid-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding-bottom:18px;border-bottom:1px solid var(--line)}.cuboid-controls label{display:grid;gap:6px;color:var(--text-muted);font-size:12px}.cuboid-controls input,.graph-toolbar select{min-height:38px;padding:7px 9px;border:1px solid var(--line);background:var(--bg-deep);color:var(--text)}.equation-checks{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin:20px 0;border:1px solid var(--line);background:var(--line)}.equation-check{display:grid;gap:6px;padding:14px;background:var(--bg-deep)}.equation-check--pass{box-shadow:inset 3px 0 var(--success)}.equation-check--pass small{color:var(--success)}.plugin-inline-note{margin:14px 0 0;padding:10px 12px;border-left:2px solid var(--warning);background:var(--bg-deep);color:var(--text-muted);font-size:12px;line-height:1.5}.no-three-layout{display:grid;grid-template-columns:minmax(280px,520px) minmax(180px,1fr);gap:20px}.point-grid{display:grid;aspect-ratio:1;border-top:1px solid var(--line);border-left:1px solid var(--line);background:var(--bg-deep)}.point-cell{position:relative;display:grid;aspect-ratio:1;place-items:center;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:transparent;cursor:pointer}.point-cell span{width:14px;height:14px;border:2px solid var(--link);border-radius:50%;background:var(--surface)}.point-cell--invalid{background:color-mix(in srgb,var(--danger) 13%,transparent)}.point-cell--invalid span{border-color:var(--danger);background:var(--danger)}.puzzle-readout{display:grid;align-content:start;grid-template-columns:1fr auto;gap:8px;padding:15px;border:1px solid var(--line);background:var(--bg-deep)}.puzzle-readout span{color:var(--text-muted);font-size:12px}.puzzle-readout strong{color:var(--accent);font-family:var(--mono)}.puzzle-readout button,.graph-toolbar button{min-height:36px;border:1px solid var(--line);background:var(--surface);color:var(--text-soft);cursor:pointer}.puzzle-readout button,.puzzle-readout p{grid-column:1 / -1}.puzzle-readout p{color:var(--text-muted);font-size:12px;line-height:1.5}.graph-toolbar{display:flex;flex-wrap:wrap;align-items:end;gap:8px;padding-bottom:16px;border-bottom:1px solid var(--line)}.graph-toolbar label{display:grid;gap:5px;color:var(--text-muted);font-size:12px}.graph-toolbar select{min-width:90px}.graph-toolbar button{padding:0 12px}.graph-workbench{display:grid;grid-template-columns:minmax(320px,2fr) minmax(190px,1fr);gap:14px;margin-top:16px}.graph-workbench svg{width:100%;min-height:320px;border:1px solid var(--line);background:radial-gradient(circle at center,color-mix(in srgb,var(--line) 36%,transparent) 1px,transparent 1px) 0 0 / 15px 15px,var(--bg-deep)}.graph-workbench line{stroke:var(--line-strong);stroke-width:2}.graph-workbench circle{stroke:var(--text);stroke-width:1.5}.graph-workbench text{fill:#fff;font-family:var(--mono);font-size:12px;text-anchor:middle}.graph-readouts{display:grid;border:1px solid var(--line)}.graph-readouts div{display:grid;gap:5px;padding:12px;border-bottom:1px solid var(--line);background:var(--bg-deep)}.graph-readouts div:last-child{border-bottom:0}.graph-readouts span{color:var(--text-muted);font-size:12px}.graph-readouts strong{color:var(--accent);font-family:var(--mono)}@media(max-width:1100px){.status-bar a{display:none}.evidence-grid,.lab-method-ledger{grid-template-columns:1fr}.lab-method-ledger div{border-right:0;border-bottom:1px solid var(--line)}.lab-method-ledger div:last-child{border-bottom:0}}@media(max-width:760px){.source-snapshot-banner{grid-template-columns:18px 1fr}.source-snapshot-banner a{grid-column:2}.evidence-grid,.no-three-layout,.graph-workbench,.cuboid-controls,.equation-checks{grid-template-columns:1fr}.graph-workbench svg{min-height:auto}}@media print{:root{color:#111;background:#fff}body{overflow:visible;background:#fff;color:#111}.app-root{display:block}.app-header,.status-bar,.notebook-list,.revision-panel,.editor-title-row,.editor-toolbar,.source-pane{display:none!important}.view-root,.notebook-layout,.editor-workspace,.editor-panes,.preview-pane,.latex-preview{display:block;height:auto;overflow:visible;color:#111;background:#fff}.pane-heading{display:none}.latex-preview{padding:0}.latex-preview p,.latex-preview h2,.latex-preview h3,.latex-preview h4,.latex-preview .formula{color:#111}}:root{color:#102b4c;background:#fff;--bg: #ffffff;--bg-deep: #f7f6f1;--surface: #ffffff;--surface-raised: #fbfaf6;--surface-soft: #f3f1ea;--text: #102b4c;--text-soft: #334b66;--text-muted: #687789;--line: #a9b3bd;--line-strong: #15385f;--accent: #b63d35;--accent-soft: #f7e8e5;--accent-contrast: #ffffff;--link: #a53b33;--success: #3d8257;--warning: #d17d18;--danger: #b63d35;--focus: #0e5e96;--serif: Georgia, "Times New Roman", serif;--mono: "Cascadia Mono", "Cascadia Code", "Courier New", monospace;--header-height: 86px;--status-height: 40px}:root[data-theme=dark]{color:#f2ede1;background:#07110f;--bg: #07110f;--bg-deep: #050c0b;--surface: #0a1714;--surface-raised: #0d1d19;--surface-soft: #10221d;--text: #f2ede1;--text-soft: #c6c1b2;--text-muted: #929c90;--line: #31473f;--line-strong: #718078;--accent: #e17b62;--accent-soft: #3c241d;--accent-contrast: #160b08;--link: #74c9c0;--success: #84b792;--warning: #d4ac6a;--danger: #e17d72;--focus: #8cd9cf}body,button,input,select,textarea{font-family:var(--serif)}.app-header{position:relative;display:grid;grid-template-columns:290px minmax(420px,1fr) minmax(460px,580px);align-items:center;border:2px solid var(--line-strong);border-bottom-width:1px;background:var(--surface-raised)}.header-brand{align-self:stretch;border-right:1px solid var(--line)}.brand-button{height:100%;gap:10px;padding:8px 18px 16px}.brand-button .brand-mark{border:1px solid var(--line-strong);border-radius:0}.brand-button>span{display:grid;gap:3px}.brand-button strong{color:var(--text);font-size:17px;font-weight:600;letter-spacing:.055em;line-height:.98;text-transform:uppercase}.brand-button small{color:var(--accent);font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.header-title{min-width:0;padding:8px 28px}.header-title p{margin:0 0 5px;color:var(--text);font-size:clamp(22px,2vw,31px);line-height:1}.header-title small{display:block;max-width:760px;color:var(--text-soft);font-family:var(--mono);font-size:12px;letter-spacing:.025em;line-height:1.35;text-transform:uppercase}.header-controls{display:grid;grid-template-columns:minmax(260px,1fr) 188px 34px;align-items:end;gap:10px;padding:9px 18px 18px}.audience-control{display:grid;gap:5px}.audience-control>span{color:var(--text-soft);font-family:var(--mono);font-size:12px;font-weight:700;text-transform:uppercase}.audience-control>div{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.audience-control button,.random-problem-button,.header-utility-button{min-height:29px;border:1px solid var(--line-strong);border-radius:3px;background:var(--surface);color:var(--text);cursor:pointer;font-size:12px}.audience-control button.is-active{background:var(--text);color:var(--surface)}.random-problem-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:40px;border-color:var(--accent);color:var(--accent);font-size:12px}.random-problem-button svg,.header-utility-button svg{width:18px;height:18px}.header-utility-button{width:34px;min-height:34px;border-color:transparent}.header-mini-nav{position:absolute;bottom:5px;left:79px;display:flex;gap:9px}.header-mini-nav button{padding:0;border:0;background:transparent;color:var(--accent);cursor:pointer;font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.header-mini-nav button+button:before{margin-right:9px;content:"·"}.mobile-menu-button{display:none}.atlas-shell{display:grid;height:100%;min-height:0;grid-template-columns:var(--atlas-left-rail-width) minmax(610px,1fr) 290px;overflow:hidden;border-right:2px solid var(--line-strong);border-left:2px solid var(--line-strong);background:var(--surface)}.atlas-filter-rail,.atlas-reading-rail{min-width:0;overflow-y:auto;background:var(--surface-raised)}.atlas-filter-rail{border-right:1px solid var(--line-strong);padding:15px 20px}.atlas-rail-heading,.reading-rail-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;color:var(--text);font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.atlas-rail-heading svg{width:12px;height:12px}.atlas-rail-heading button{border:0;background:transparent;cursor:pointer}.field-filter-list{display:grid}.field-filter-list button{display:grid;min-height:37px;grid-template-columns:25px 1fr auto;align-items:center;gap:6px;padding:0;border:0;background:transparent;color:var(--text);cursor:pointer;text-align:left}.field-filter-list button.is-selected{color:var(--accent)}.field-filter-list button:hover span:nth-child(2){text-decoration:underline;text-underline-offset:3px}.field-glyph{color:var(--text);font-size:20px;text-align:center}.field-filter-list button>span:nth-child(2){overflow:hidden;font-size:12px;text-overflow:ellipsis;white-space:nowrap}.field-filter-list strong{color:var(--text-soft);font-family:var(--mono);font-size:12px;font-weight:600}.atlas-status-legend,.atlas-about{margin-top:14px;padding-top:16px;border-top:1px solid var(--line)}.atlas-status-legend h3,.atlas-about h3,.rail-section h3{margin:0 0 10px;color:var(--text-soft);font-family:var(--mono);font-size:12px;letter-spacing:.05em;text-transform:uppercase}.atlas-status-legend p{display:grid;grid-template-columns:11px 1fr auto;align-items:center;gap:7px;margin:9px 0;color:var(--text);font-family:var(--mono);font-size:12px}.atlas-status-legend strong{font-weight:600}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%}.status-dot--open{background:var(--accent)}.status-dot--solved{background:var(--success)}.status-dot--dossier{background:#185a8d}.atlas-about p{margin:0 0 10px;color:var(--text-soft);font-size:12px;line-height:1.45}.atlas-about a{display:inline-flex;align-items:center;gap:4px;font-family:var(--mono);font-size:12px}.atlas-about svg,.source-cell svg,.research-rail svg{width:11px;height:11px}.atlas-index{min-width:0;min-height:0;overflow:auto;padding:0 12px;background:linear-gradient(90deg,transparent 0 99.75%,color-mix(in srgb,var(--line) 30%,transparent) 99.75%),var(--surface)}.atlas-tabs{display:grid;height:44px;grid-template-columns:repeat(3,1fr);align-items:end;border-bottom:1px solid var(--line)}.atlas-tabs button{position:relative;height:100%;border:0;background:transparent;color:var(--text);cursor:pointer;font-size:12px}.atlas-tabs button.is-active{color:var(--accent)}.atlas-tabs button.is-active:after{position:absolute;right:4px;bottom:-1px;left:4px;height:2px;background:var(--accent);content:""}.atlas-search-row{display:grid;grid-template-columns:1fr 182px;gap:10px;padding:16px 5px 12px}.atlas-search-row label{display:grid;min-width:0;height:30px;grid-template-columns:30px 1fr;align-items:center;border:1px solid var(--line-strong);border-radius:2px;background:var(--surface)}.atlas-search-row label svg{width:15px;height:15px;justify-self:center}.atlas-search-row input{min-width:0;height:100%;border:0;background:transparent;color:var(--text);font-family:var(--mono);font-size:12px}.atlas-search-row>button{display:flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line-strong);border-radius:2px;background:var(--surface);color:var(--text);cursor:pointer;font-family:var(--mono);font-size:12px}.atlas-search-row>button.is-active{background:var(--text);color:var(--surface)}.atlas-search-row>button svg{width:15px;height:15px}.advanced-filter-row{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;margin:0 5px 12px;padding:10px;border:1px solid var(--line);background:var(--surface-soft)}.advanced-filter-row label{display:grid;gap:4px;color:var(--text-muted);font-family:var(--mono);font-size:12px;text-transform:uppercase}.advanced-filter-row select,.advanced-filter-row button{min-height:30px;border:1px solid var(--line);border-radius:1px;background:var(--surface);color:var(--text);font-size:12px}.advanced-filter-row button{align-self:end;padding:0 13px;cursor:pointer}.atlas-table-heading,.atlas-problem-row{display:grid;grid-template-columns:minmax(290px,1.35fr) minmax(210px,1fr) minmax(220px,1fr)}.atlas-table-heading{min-height:20px;padding:0 7px;color:var(--text-soft);font-family:var(--mono);font-size:12px;font-weight:700;text-transform:uppercase}.atlas-table-heading span:nth-child(2),.atlas-table-heading span:nth-child(3){padding-left:13px}.atlas-problem-table{border-top:1px solid var(--line);border-left:1px solid var(--line)}.atlas-problem-row{width:100%;min-height:84px;padding:0;border:0;border-bottom:1px solid var(--line);background:var(--surface-raised);color:var(--text);cursor:pointer;text-align:left}.atlas-problem-row:hover,.atlas-problem-row.is-selected{background:color-mix(in srgb,var(--accent-soft) 42%,var(--surface))}.atlas-problem-row.is-selected .problem-title{color:var(--accent)}.atlas-problem-row>span{display:grid;align-content:start;min-width:0;gap:3px;padding:7px 12px;border-right:1px solid var(--line)}.problem-title{display:flex;align-items:center;justify-content:space-between;gap:8px;overflow:hidden;color:var(--accent);font-size:14px;line-height:1.05;text-overflow:ellipsis;white-space:nowrap}.problem-title svg{width:14px;height:14px;flex:0 0 auto}.problem-statement{display:-webkit-box;overflow:hidden;color:var(--text);font-family:var(--mono);font-size:12px;line-height:1.3;-webkit-box-orient:vertical;-webkit-line-clamp:2}.problem-status{display:flex;align-items:center;gap:5px;color:var(--text-soft);font-family:var(--mono);font-size:12px}.problem-status .status-dot{width:7px;height:7px}.source-cell strong{display:-webkit-box;overflow:hidden;font-size:12px;font-weight:500;line-height:1.25;-webkit-box-orient:vertical;-webkit-line-clamp:2}.source-cell>span{overflow:hidden;color:var(--text-soft);font-family:var(--mono);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.source-cell a{display:inline-flex;width:max-content;align-items:center;gap:4px;color:var(--accent);font-family:var(--mono);font-size:12px}.depth-cell>span:first-child{color:var(--text-soft);font-family:var(--mono);font-size:12px}.tag-list{display:flex;flex-wrap:wrap;gap:5px;margin-top:5px}.tag-list i{max-width:100%;overflow:hidden;padding:3px 6px;border:1px solid var(--line-strong);border-radius:3px;color:var(--text);font-family:var(--mono);font-size:12px;font-style:normal;line-height:1;text-overflow:ellipsis;white-space:nowrap}.atlas-empty-state{display:grid;min-height:300px;place-items:center;align-content:center;gap:12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--text-soft)}.atlas-empty-state svg{width:30px;height:30px}.atlas-empty-state h2{margin:0;font-size:18px;font-weight:400}.atlas-empty-state button{border:0;background:transparent;color:var(--accent);cursor:pointer;text-decoration:underline}.atlas-pagination{display:flex;min-height:42px;align-items:center;justify-content:space-between;padding:0 7px;color:var(--text);font-family:var(--mono);font-size:12px}.atlas-pagination>div{display:flex;gap:2px}.atlas-pagination button{display:grid;width:27px;height:27px;place-items:center;border:0;background:transparent;color:var(--text);cursor:pointer;font-family:var(--mono);font-size:12px}.atlas-pagination button.is-active{background:var(--text);color:var(--surface)}.atlas-pagination svg{width:14px;height:14px}.atlas-reading-rail{border-left:1px solid var(--line-strong);padding:15px 18px}.reading-rail-title{margin-bottom:14px}.reading-rail-title button{padding:0;border:0;background:transparent;color:var(--text);cursor:pointer;font-size:12px;text-decoration:underline}.current-problem-card{padding-bottom:13px;border-bottom:1px solid var(--line)}.current-problem-card small{color:var(--text-soft);font-family:var(--mono);font-size:12px;font-weight:700;text-transform:uppercase}.current-problem-card h2{margin:6px 0 4px;color:var(--accent);font-size:15px;font-weight:500;line-height:1.1}.current-problem-card p{margin:0;color:var(--text-soft);font-family:var(--mono);font-size:12px}.rail-section{margin-top:14px;padding-bottom:13px;border-bottom:1px solid var(--line)}.rail-checklist{display:grid;gap:8px}.rail-checklist label{display:grid;grid-template-columns:15px 1fr;align-items:start;gap:7px;color:var(--text);cursor:pointer;font-family:var(--mono);font-size:12px;line-height:1.3}.rail-checklist input{position:absolute;opacity:0;pointer-events:none}.rail-checkbox{display:grid;width:14px;height:14px;place-items:center;border:1px solid var(--line-strong);border-radius:50%}.rail-checkbox.is-checked{border-color:var(--success);background:var(--success);color:#fff}.rail-checkbox svg{width:10px;height:10px}.prerequisite-list{display:grid;gap:6px;margin:0;padding:0;list-style:none}.prerequisite-list li{display:flex;align-items:center;gap:7px;color:var(--text);font-family:var(--mono);font-size:12px}.prerequisite-list svg{width:11px;height:11px}.rail-muted{margin:0;color:var(--text-muted);font-family:var(--mono);font-size:12px;line-height:1.4}.key-term-list{display:grid;gap:7px}.key-term-list a{display:flex;align-items:center;gap:8px;color:var(--text);font-family:var(--mono);font-size:12px;text-decoration:none}.key-term-list svg{width:13px;height:13px}.full-dossier-link{display:flex;align-items:center;gap:6px;margin:13px 0;padding:0;border:0;background:transparent;color:var(--text);cursor:pointer;font-family:var(--mono);font-size:12px}.full-dossier-link:hover{color:var(--accent)}.full-dossier-link svg{width:12px;height:12px}.path-boundary{display:grid;grid-template-columns:28px 1fr;gap:9px;padding:10px;border:1px solid var(--line)}.path-boundary svg{width:21px;height:21px}.path-boundary p{margin:0;color:var(--text-soft);font-family:var(--mono);font-size:12px;line-height:1.4}.teaching-rail,.drafts-rail{display:grid;gap:7px}.teaching-rail h3,.drafts-rail h3{margin-bottom:2px}.teaching-rail p{margin:0 0 4px;color:var(--text-soft);font-family:var(--mono);font-size:12px}.teaching-rail button,.drafts-rail>button{display:flex;min-height:32px;align-items:center;gap:7px;padding:5px 9px;border:1px solid var(--line-strong);background:var(--surface);color:var(--text);cursor:pointer;font-size:12px;text-align:left}.teaching-rail button svg,.drafts-rail button svg{width:14px;height:14px}.drafts-rail>button span{display:grid}.drafts-rail button strong{font-size:12px;font-weight:500}.drafts-rail button small{color:var(--text-muted);font-family:var(--mono);font-size:12px}.research-rail dl{display:grid;gap:5px;margin:0 0 10px}.research-rail dl div{display:grid;grid-template-columns:1fr 1.2fr;color:var(--text-soft);font-family:var(--mono);font-size:12px}.research-rail dd{margin:0;color:var(--text);text-align:right}.research-rail>a{display:flex;align-items:center;gap:5px;margin:6px 0;font-family:var(--mono);font-size:12px}.notable-list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:7px 5px 20px}.notable-list-grid>a{display:grid;min-height:170px;align-content:start;padding:16px;border:1px solid var(--line);background:var(--surface-raised);color:var(--text);text-decoration:none}.notable-list-grid>a>span{color:var(--accent);font-family:var(--mono);font-size:12px;text-transform:uppercase}.notable-list-grid h2{margin:9px 0 14px;font-size:20px;font-weight:500}.notable-list-grid dl{display:grid;grid-template-columns:repeat(3,1fr);margin:0 0 13px}.notable-list-grid dl div{border-right:1px solid var(--line);padding-right:8px}.notable-list-grid dt{color:var(--text-muted);font-family:var(--mono);font-size:12px;text-transform:uppercase}.notable-list-grid dd{margin:4px 0 0;font-family:var(--mono);font-size:12px}.notable-list-grid>a>strong{display:inline-flex;align-items:center;gap:5px;color:var(--accent);font-family:var(--mono);font-size:12px;font-weight:500}.notable-list-grid svg{width:11px;height:11px}.dossier-backdrop{position:fixed;z-index:100;display:grid;inset:0;place-items:center;padding:24px;background:color-mix(in srgb,var(--text) 35%,transparent)}.problem-dossier{width:min(900px,100%);max-height:calc(100dvh - 48px);overflow:auto;border:2px solid var(--line-strong);background:var(--surface-raised);box-shadow:14px 14px color-mix(in srgb,var(--text) 14%,transparent)}.problem-dossier>header{display:grid;grid-template-columns:1fr auto;gap:18px;padding:24px;border-bottom:1px solid var(--line)}.problem-dossier>header span{color:var(--accent);font-family:var(--mono);font-size:12px;text-transform:uppercase}.problem-dossier h2{margin:6px 0 8px;color:var(--text);font-size:32px;font-weight:400}.problem-dossier>header p{max-width:720px;margin:0;color:var(--text-soft);font-size:14px;line-height:1.45}.problem-dossier>header button{width:34px;height:34px;border:1px solid var(--line-strong);background:var(--surface);cursor:pointer}.problem-dossier>header svg{width:17px;height:17px}.dossier-metadata,.dossier-evidence{display:grid;grid-template-columns:repeat(4,1fr);margin:0;border-bottom:1px solid var(--line)}.dossier-metadata>div,.dossier-evidence>section{padding:13px 16px;border-right:1px solid var(--line)}.dossier-metadata dt,.dossier-evidence h3{color:var(--text-muted);font-family:var(--mono);font-size:12px;text-transform:uppercase}.dossier-metadata dd{margin:5px 0 0;color:var(--text);font-size:12px}.dossier-formula{padding:22px;overflow-x:auto;border-bottom:1px solid var(--line);background:var(--surface)}.dossier-tabs{display:grid;height:42px;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}.dossier-tabs button{border:0;border-right:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer}.dossier-tabs button.is-active{box-shadow:inset 0 -2px var(--accent);color:var(--accent)}.dossier-copy{padding:20px 24px}.dossier-copy h3{margin:0 0 8px;font-size:19px;font-weight:500}.dossier-copy p,.dossier-evidence p,.dossier-evidence li{color:var(--text-soft);font-size:12px;line-height:1.55}.dossier-evidence{grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}.problem-dossier>footer{display:flex;min-height:52px;align-items:center;justify-content:space-between;gap:14px;padding:10px 20px;color:var(--text-muted);font-family:var(--mono);font-size:12px}.problem-dossier>footer button{display:inline-flex;min-height:32px;align-items:center;gap:7px;padding:0 12px;border:1px solid var(--accent);background:var(--surface);color:var(--accent);cursor:pointer}.problem-dossier>footer svg{width:14px;height:14px}.status-bar{z-index:32;border:2px solid var(--line-strong);border-top-width:1px;background:var(--surface-raised);color:var(--text-soft);font-family:var(--mono);font-size:12px}.status-bar svg{color:var(--success)}@media(max-width:1180px){.app-header{grid-template-columns:250px 1fr 410px}.header-brand{min-width:0}.header-controls{grid-template-columns:1fr 150px 34px}.atlas-shell{grid-template-columns:240px minmax(540px,1fr) 250px}.atlas-table-heading,.atlas-problem-row{grid-template-columns:minmax(250px,1.3fr) minmax(170px,.9fr) minmax(175px,.9fr)}}@media(max-width:900px){:root{--header-height: 72px}.app-header{grid-template-columns:1fr auto}.header-brand{border-right:0}.brand-button{padding:8px 14px 16px}.brand-button strong{font-size:14px}.header-title,.audience-control,.random-problem-button{display:none}.header-controls{display:flex;align-items:center;padding:10px 12px}.header-mini-nav{left:71px}.mobile-menu-button{display:grid;place-items:center}.atlas-shell{grid-template-columns:minmax(0,1fr) 270px}.atlas-filter-rail--desktop{display:none}.atlas-filter-rail--drawer{width:min(320px,88vw);height:100%}.atlas-table-heading,.atlas-problem-row{grid-template-columns:minmax(250px,1.3fr) minmax(170px,.9fr)}.atlas-table-heading span:nth-child(3),.atlas-problem-row .depth-cell{display:none}}@media(max-width:680px){:root{--header-height: 66px;--status-height: 38px}.brand-button .brand-mark{width:40px;height:40px}.header-mini-nav{display:none}.brand-button{padding-bottom:8px}.brand-button small{display:none}.atlas-shell{display:block;overflow:auto}.atlas-index{min-height:100%;overflow:visible;padding:0 8px}.atlas-reading-rail{border-top:2px solid var(--line-strong);border-left:0}.atlas-tabs{height:42px}.atlas-tabs button{font-size:12px}.atlas-search-row{grid-template-columns:1fr 42px;padding-top:12px}.atlas-search-row>button{font-size:0}.advanced-filter-row{grid-template-columns:1fr}.atlas-table-heading{display:none}.atlas-problem-table{border-top:0}.atlas-problem-row{min-height:0;grid-template-columns:1fr;margin-bottom:7px;border-top:1px solid var(--line)}.atlas-problem-row .source-cell{border-top:1px solid var(--line)}.atlas-problem-row .depth-cell{display:grid;border-top:1px solid var(--line)}.problem-title{white-space:normal}.atlas-pagination{align-items:flex-start;flex-direction:column;gap:8px;padding:10px 6px 14px}.atlas-pagination>div button:nth-of-type(n+5):not(:last-child){display:none}.notable-list-grid{grid-template-columns:1fr}.status-bar>:nth-child(2),.status-bar>:nth-child(4),.status-bar>a{display:none}.dossier-backdrop{padding:8px}.problem-dossier{max-height:calc(100dvh - 16px)}.problem-dossier>header{padding:17px}.problem-dossier h2{font-size:25px}.dossier-metadata{grid-template-columns:1fr 1fr}.dossier-evidence{grid-template-columns:1fr}}.lab-view{display:grid;height:100%;min-height:0;grid-template-rows:auto minmax(0,1fr);overflow:hidden;padding:0;background:var(--surface-raised)}.lab-workshop-heading{display:grid;min-height:82px;grid-template-columns:minmax(360px,1fr) minmax(260px,.65fr) auto;align-items:center;gap:24px;padding:10px 22px;border:2px solid var(--line-strong);border-top:0;background:var(--surface-raised)}.lab-title-block>span,.lab-live-heading>span{color:var(--accent);font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.07em;text-transform:uppercase}.lab-title-block h1{margin:3px 0;color:var(--text);font-size:25px;font-weight:400;line-height:1}.lab-title-block p{margin:0;color:var(--text-soft);font-family:var(--mono);font-size:12px}.lab-live-heading{display:grid;gap:5px;padding-left:18px;border-left:1px solid var(--line)}.lab-live-heading strong{color:var(--text);font-size:13px;font-weight:500}.lab-contract-button{display:inline-flex;min-height:38px;align-items:center;gap:8px;padding:0 14px;border:1px solid var(--accent);border-radius:2px;background:var(--surface);color:var(--accent);cursor:pointer;font-size:12px}.lab-contract-button svg{width:15px;height:15px}.lab-layout{display:grid;min-height:0;grid-template-columns:340px minmax(0,1fr);overflow:hidden;border-right:2px solid var(--line-strong);border-left:2px solid var(--line-strong);background:var(--surface)}.plugin-library{display:grid;min-height:0;grid-template-columns:68px minmax(0,1fr);grid-auto-rows:min-content;align-content:start;overflow-y:auto;padding:0;border-right:1px solid var(--line-strong);background:var(--surface-raised)}.lab-vertical-nav{display:flex;min-height:100%;grid-row:1 / span 20;align-items:stretch;flex-direction:column;border-right:1px solid #274c73;background:#0e3155;color:#fff}.lab-vertical-nav span{display:grid;min-height:64px;place-items:center;align-content:center;gap:6px;border-bottom:1px solid #365979;color:#eaf0f5;font-size:12px}.lab-vertical-nav span.is-active{background:#214c74;box-shadow:inset 3px 0 #fff}.lab-vertical-nav svg{width:18px;height:18px}.plugin-library>.rail-heading{grid-column:2;padding:16px 14px 10px;border-bottom:1px solid var(--line)}.plugin-library>.rail-heading h2{color:var(--text);font-size:14px;font-weight:500}.plugin-library>.rail-heading p{color:var(--text-muted);font-family:var(--mono);font-size:12px}.plugin-row{min-height:54px;grid-column:2;gap:9px;padding:8px 13px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text)}.plugin-row:hover,.plugin-row--active{background:var(--accent-soft)}.plugin-row--active{box-shadow:inset 3px 0 var(--accent)}.plugin-row>svg{width:15px;height:15px;color:var(--accent)}.plugin-row strong{font-size:12px;font-weight:500}.plugin-row small{color:var(--text-muted);font-family:var(--mono);font-size:12px}.plugin-security-note{grid-column:2;margin:12px;padding:10px;border:1px solid var(--line);background:var(--surface);color:var(--text-soft)}.plugin-security-note svg{width:15px;height:15px;color:var(--accent)}.plugin-security-note p{font-family:var(--mono);font-size:12px;line-height:1.4}.lab-stage{min-height:0;overflow:auto;padding:0 18px 20px;background:var(--surface-raised)}.lab-stage__heading{display:flex;min-height:72px;align-items:center;justify-content:space-between;gap:18px;padding:10px 2px;border-bottom:1px solid var(--line)}.lab-stage__heading p{margin:0 0 4px;color:var(--accent);font-family:var(--mono);font-size:12px;font-weight:700;text-transform:uppercase}.lab-stage__heading h2{margin:0 0 3px;color:var(--text);font-size:20px;font-weight:400}.lab-stage__heading div>span,.local-compute-label{color:var(--text-muted);font-family:var(--mono);font-size:12px}.local-compute-label{padding:6px 9px;border:1px solid var(--success);color:var(--success);text-transform:uppercase}.lab-plugin{margin:12px 0;padding:13px;border:1px solid var(--line);background:var(--surface)}.graph-toolbar{gap:7px;padding-bottom:11px}.graph-toolbar label{color:var(--text-soft);font-family:var(--mono);font-size:12px;text-transform:uppercase}.graph-toolbar select{min-width:76px;min-height:35px;border:1px solid var(--line-strong);border-radius:1px;background:var(--surface);color:var(--text)}.graph-toolbar button{min-height:35px;padding:0 13px;border-color:var(--line-strong);border-radius:1px;background:var(--surface);color:var(--text);font-size:12px}.graph-toolbar button:last-child{border-color:var(--accent);color:var(--accent)}.graph-workbench{grid-template-columns:minmax(390px,2fr) minmax(190px,.8fr);gap:10px;margin-top:12px}.graph-workbench svg{min-height:350px;border-color:var(--line-strong);background:radial-gradient(circle at center,color-mix(in srgb,var(--line-strong) 25%,transparent) 1px,transparent 1px) 0 0 / 14px 14px,var(--surface-raised)}.graph-workbench line{stroke:var(--line-strong)}.graph-workbench circle{stroke:var(--line-strong);fill:var(--surface)!important}.graph-workbench text{fill:var(--text);font-family:var(--serif)}.graph-readouts{border-color:var(--line-strong)}.graph-readouts div{background:var(--surface-raised)}.graph-readouts span{color:var(--text-soft);font-family:var(--mono);font-size:12px;text-transform:uppercase}.graph-readouts strong{color:var(--text);font-size:18px;font-weight:500}.plugin-inline-note{margin:10px 0 0;padding:9px 10px;border-left:2px solid var(--accent);background:var(--surface-soft);color:var(--text-soft);font-family:var(--mono);font-size:12px}.lab-method-ledger{border-color:var(--line-strong);background:var(--surface)}.lab-method-ledger div{padding:12px}.lab-method-ledger dt{color:var(--text-muted);font-family:var(--mono);font-size:12px}.lab-method-ledger dd{color:var(--text-soft);font-size:12px}.lab-disclosure{border-color:var(--accent);background:var(--accent-soft);color:var(--text)}.lab-disclosure p{color:var(--text-soft);font-size:12px}@media(max-width:900px){.lab-workshop-heading{grid-template-columns:1fr auto}.lab-live-heading{display:none}.lab-layout{grid-template-columns:270px minmax(0,1fr)}.plugin-library{grid-template-columns:58px minmax(0,1fr)}.graph-workbench{grid-template-columns:1fr}}@media(max-width:680px){.lab-view{display:block;overflow:auto}.lab-workshop-heading{min-height:92px;grid-template-columns:1fr;gap:8px;padding:12px 14px}.lab-contract-button{display:none}.lab-layout{display:block;overflow:visible}.plugin-library{display:block;overflow:visible;border-right:0}.lab-vertical-nav,.plugin-security-note{display:none}.plugin-library>.rail-heading{padding:10px 13px}.plugin-row{display:inline-flex;width:auto;max-width:240px;border-right:1px solid var(--line)}.lab-stage{overflow:visible;padding:0 9px 20px}.graph-workbench{grid-template-columns:1fr}.graph-workbench svg{min-height:260px}}:root{--font-body: 16px;--font-control: 14px;--font-sidebar: 13px;--font-meta: 12px;--header-height: 154px;--status-height: 48px}body{font-size:var(--font-body);line-height:1.55}button,input,select,textarea{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:var(--font-control)}button,a,input,select,textarea,summary{outline:2px solid transparent;outline-offset:2px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{box-shadow:none;outline-color:var(--focus)}.skip-link{position:fixed;z-index:1000;top:8px;left:8px;transform:translateY(-160%);padding:10px 14px;border:2px solid var(--focus);background:var(--surface);color:var(--text)}.skip-link:focus{transform:translateY(0)}.app-header{grid-template-columns:var(--atlas-left-rail-width) minmax(320px,1fr) minmax(420px,auto);grid-template-rows:minmax(0,1fr) 52px;border:2px solid var(--line-strong);background:var(--surface-raised)}.header-brand{grid-row:1 / span 2;border-right:1px solid var(--line-strong)}.brand-button{height:100%;color:var(--text);text-decoration:none}.header-title{grid-column:2;grid-row:1;display:flex;min-width:0;align-self:stretch;flex-direction:column;justify-content:center;padding:14px 22px}.header-title p{margin:0;font-family:var(--serif);font-size:clamp(22px,2vw,32px);line-height:1.05}.header-title small{display:block;margin-top:8px;color:var(--text-soft);font-family:var(--mono);font-size:var(--font-meta);line-height:1.45}.header-controls{grid-column:3;grid-row:1;grid-template-columns:minmax(220px,1fr) 170px 44px;min-width:0}.header-mini-nav{position:static;grid-column:2 / -1;grid-row:2;display:grid;grid-template-columns:repeat(4,minmax(80px,1fr));gap:0;align-self:stretch;border-top:1px solid var(--line)}.header-mini-nav a{display:grid;min-height:36px;place-items:center;border-left:1px solid var(--line);color:var(--text-soft);font-family:Inter,ui-sans-serif,sans-serif;font-size:var(--font-control);font-weight:650;text-decoration:none}.header-mini-nav a[aria-current=page]{box-shadow:inset 0 -3px var(--accent);color:var(--accent)}.header-mini-nav button+button:before,.header-mini-nav a+a:before{content:none}.audience-control button,.random-problem-button,.header-utility-button{min-height:44px}.header-utility-button{width:44px}.atlas-page-heading{display:flex;min-height:78px;align-items:center;justify-content:space-between;gap:24px;padding:12px 6px;border-bottom:1px solid var(--line)}.atlas-page-heading h1{margin:2px 0 0;font-family:var(--serif);font-size:clamp(24px,2.2vw,34px);font-weight:500;line-height:1.1}.atlas-page-heading>p{max-width:420px;margin:0;color:var(--text-soft);font-size:14px;text-align:right}.atlas-video-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,280px);align-items:center;gap:24px;margin:12px 6px;padding:16px 18px;border:1px solid var(--line);background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 8%,transparent),transparent 48%),var(--surface-raised)}.atlas-video-feature h2{margin:3px 0 6px;font-family:var(--serif);font-size:clamp(21px,2vw,28px);font-weight:500;line-height:1.1}.atlas-video-feature p{max-width:720px;margin:0;color:var(--text-soft);font-size:14px;line-height:1.55}.atlas-video-action{display:grid;gap:7px}.atlas-video-action button,.atlas-video-close{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:8px;border:1px solid var(--accent);background:var(--surface);color:var(--accent);cursor:pointer;font-family:Inter,ui-sans-serif,sans-serif;font-size:var(--font-control);font-weight:650}.atlas-video-action svg,.atlas-video-close svg{width:18px;height:18px}.atlas-video-action small{color:var(--text-muted);font-family:var(--mono);font-size:var(--font-meta);line-height:1.4}.atlas-video-feature.is-playing{display:block;padding:0}.atlas-video-player{position:relative;width:100%;background:#000}.atlas-video-player iframe{display:block;width:100%;max-height:min(64vh,680px);border:0;aspect-ratio:16 / 9}.atlas-video-close{position:absolute;z-index:1;top:12px;right:12px;min-height:40px;padding:8px 12px;border-color:#ffffffc7;background:#050c0be6;color:#fff}.eyebrow,.canonical-metadata dt,.breadcrumbs,.canonical-card-grid span{color:var(--text-muted);font-family:var(--mono);font-size:var(--font-meta);letter-spacing:.04em;text-transform:uppercase}.atlas-filter-rail,.atlas-reading-rail,.plugin-library,.revision-panel,.notebook-list{font-size:var(--font-sidebar)}.field-filter-list button,.atlas-tabs button,.atlas-search-row label,.atlas-search-row>button,.advanced-filter-row select,.advanced-filter-row button,.teaching-rail button,.drafts-rail>button,.plugin-row{min-height:44px;font-size:var(--font-control)}.atlas-problem-row{min-height:116px}.problem-title,.source-cell strong,.depth-cell,.problem-status{font-size:14px}.problem-statement,.source-cell span{font-size:13px;line-height:1.45}.canonical-page{height:100%;overflow:auto;padding:28px clamp(18px,4vw,64px) 72px;background:var(--surface-raised)}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;text-transform:none}.canonical-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:start;padding:26px 0;border-top:2px solid var(--line-strong);border-bottom:1px solid var(--line-strong)}.canonical-hero h1{max-width:980px;margin:4px 0 12px;font-family:var(--serif);font-size:clamp(36px,5vw,68px);font-weight:400;line-height:1}.canonical-statement{max-width:900px;margin:0;color:var(--text-soft);font-family:var(--serif);font-size:20px;line-height:1.55}.canonical-hero>button,.canonical-sidebar button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:8px;padding:9px 14px;border:1px solid var(--accent);background:var(--surface);color:var(--accent);cursor:pointer}.canonical-hero svg,.canonical-sidebar svg{width:17px;height:17px}.canonical-metadata{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));margin:0;border-bottom:1px solid var(--line)}.canonical-metadata>div{padding:14px;border-right:1px solid var(--line)}.canonical-metadata dd{margin:6px 0 0;font-size:14px}.canonical-formula{padding:22px 0;overflow-x:auto;border-bottom:1px solid var(--line)}.canonical-formula h2{font-size:18px}.canonical-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,340px);gap:42px;padding-top:28px}.canonical-grid article>section,.collection-page>section{max-width:900px;margin-bottom:34px}.canonical-grid h2,.collection-page h2{margin:0 0 10px;font-family:var(--serif);font-size:25px;font-weight:500}.canonical-grid p,.canonical-grid li,.collection-page>section p{font-size:var(--font-body);line-height:1.65}.source-trail{display:grid;gap:14px;padding-left:22px}.source-trail a{display:inline-flex;align-items:center;gap:6px}.source-trail p{margin:3px 0 0;color:var(--text-soft)}.placement-boundary{max-width:900px;margin:16px 0 0;padding-left:14px;border-left:3px solid var(--accent);color:var(--text-soft);font-size:14px}.placement-link-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;padding:0;border-top:1px solid var(--line);list-style:none}.placement-link-list li{display:grid;gap:4px;min-width:0;padding:14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.placement-link-list a{font-family:var(--serif);font-size:18px}.placement-link-list span{color:var(--text-soft);font-size:13px}.canonical-sidebar{display:grid;align-content:start;gap:16px}.canonical-sidebar section{padding:18px;border:1px solid var(--line);background:var(--surface)}.canonical-sidebar h2{font-size:19px}.canonical-sidebar label{display:grid;min-height:44px;grid-template-columns:24px 1fr;align-items:start;gap:8px;margin:4px 0}.reading-path-fieldset{margin:0;padding:0;border:0}.problem-title{min-height:32px;padding:0;border:0;background:transparent;color:var(--accent);cursor:pointer;font-family:var(--serif);text-align:left}.complexity-table caption{padding:8px;color:var(--text-soft);font-size:var(--font-meta);text-align:left}.canonical-sidebar input{width:20px;height:20px}.canonical-sidebar button{width:100%;margin-top:8px}.canonical-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.canonical-card-grid article{padding:18px;border:1px solid var(--line);background:var(--surface)}.canonical-card-grid h3{margin:8px 0;font-family:var(--serif);font-size:22px}.canonical-card-grid p{font-size:14px}.analytics-consent{position:fixed;z-index:200;right:18px;bottom:calc(var(--status-height) + 18px);display:grid;width:min(520px,calc(100vw - 36px));gap:14px;padding:18px;border:2px solid var(--line-strong);background:var(--surface-raised);box-shadow:8px 8px color-mix(in srgb,var(--text) 15%,transparent)}.analytics-consent p{margin:6px 0 0;color:var(--text-soft);font-size:14px}.analytics-consent>div:last-child{display:flex;justify-content:flex-end;gap:10px}.analytics-consent button{min-height:44px;padding:8px 14px;border:1px solid var(--line-strong);background:var(--surface)}.analytics-consent button:last-child{border-color:var(--accent);color:var(--accent)}.prerendered-content{max-width:980px;margin:0 auto;padding:48px 24px;font:16px/1.65 Inter,ui-sans-serif,sans-serif}.prerendered-content h1,.prerendered-content h2{font-family:Georgia,serif}.learning-page{width:100%;height:100%;overflow-x:hidden;overflow-y:auto;padding:28px clamp(18px,4vw,56px) 88px;background:linear-gradient(90deg,transparent 0 49.8%,color-mix(in srgb,var(--line) 30%,transparent) 50%,transparent 50.2%) var(--surface);color:var(--text)}.learning-page .katex .mtight{font-size:12px!important}.learning-page>*{width:min(1180px,100%);margin-inline:auto}.learning-page .breadcrumbs{margin-bottom:22px}.learning-hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);align-items:stretch;gap:32px;padding:12px 0 38px;border-bottom:1px solid var(--line-strong)}.learning-hero__copy{align-self:center}.learning-hero h1{max-width:850px;margin:0;font-family:var(--serif);font-size:clamp(44px,5vw,76px);font-weight:400;letter-spacing:-.035em;line-height:.98}.learning-hero__copy>p{max-width:780px;margin:22px 0 0;color:var(--text-soft);font-size:19px;line-height:1.6}.learning-text-link,.learning-actions a{display:inline-flex;min-height:44px;align-items:center;gap:9px;margin-top:22px;color:var(--link);font-family:Inter,ui-sans-serif,sans-serif;font-size:var(--font-control);font-weight:650}.learning-text-link svg,.learning-actions svg{width:19px;height:19px}.learning-trust-card,.study-boundary{align-self:center;min-height:190px;padding:28px;color:#f8fafc}.learning-trust-card{display:grid;grid-template-columns:36px 1fr;align-items:start;gap:18px}.learning-trust-card svg,.study-boundary svg{width:32px;height:32px;color:#fca5a5}.learning-trust-card strong{display:block;margin-bottom:8px;font-family:Inter,ui-sans-serif,sans-serif;font-size:17px}.learning-trust-card p,.study-boundary p{margin:0;color:#dbe4ef;font-family:Inter,ui-sans-serif,sans-serif;font-size:14px;line-height:1.65}.fx-layer{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--fx-radius);background:var(--fx-base-bg)}.fx-layer:before,.fx-layer:after{position:absolute;pointer-events:none;content:""}.fx-layer:before{z-index:0;inset:var(--fx-inset);padding:var(--fx-width);border-radius:var(--fx-radius);background:repeating-conic-gradient(from 0deg,#10b981 0deg 4deg,#3b82f6 4deg 8deg,#ef4444 8deg 12deg,transparent 12deg 24deg);filter:drop-shadow(0 0 var(--fx-bloom) color-mix(in srgb,var(--fx-color) 80%,transparent)) drop-shadow(0 0 var(--fx-shadow) color-mix(in srgb,var(--fx-color) 55%,transparent));opacity:var(--fx-opacity);mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;animation:fx-orbit var(--fx-speed) var(--fx-easing) infinite}.fx-layer:after{z-index:0;inset:calc(var(--fx-inset) + var(--fx-width));border-radius:calc(var(--fx-radius) - var(--fx-width));background:rgb(30 41 59 / var(--fx-panel-alpha))}.fx-layer>*{position:relative;z-index:1}.fx-echo{--fx-speed: 5.676484697483629s;--fx-width: 9px;--fx-radius: 18px;--fx-inset: 5px;--fx-bloom: 6px;--fx-shadow: 6px;--fx-easing: linear;--fx-opacity: .95;--fx-color: #b13e3e;--fx-base-bg: #0f172a;--fx-panel-bg: #1e293b;--fx-panel-alpha: .96}.fx-corner{--fx-speed: 1.4999000944611094s;--fx-width: 5px;--fx-radius: 14px;--fx-inset: 7px;--fx-bloom: 19px;--fx-shadow: 6px;--fx-easing: linear;--fx-opacity: .95;--fx-color: #af1212;--fx-base-bg: #0f172a;--fx-panel-bg: #1e293b;--fx-panel-alpha: .96}@keyframes fx-orbit{to{transform:rotate(1turn) scale(1.03)}}.learning-search-panel{display:grid;grid-template-columns:minmax(280px,1fr) auto;gap:14px 24px;padding:26px 0;border-bottom:1px solid var(--line)}.learning-search{display:flex;min-height:48px;align-items:center;gap:11px;padding:0 15px;border:1px solid var(--line-strong);background:var(--surface-raised)}.learning-search svg{width:19px;height:19px;color:var(--text-muted)}.learning-search input{width:100%;border:0;outline:0;background:transparent;color:var(--text)}.learning-filter-list{display:flex;flex-wrap:wrap;gap:7px}.learning-filter-list button{min-height:44px;padding:0 13px;border:1px solid var(--line);background:var(--surface);color:var(--text-soft);cursor:pointer}.learning-filter-list button.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.learning-result-count{grid-column:1 / -1;margin:0;color:var(--text-muted);font:12px/1.4 var(--mono);text-transform:uppercase}.glossary-guidance{display:grid;grid-template-columns:32px 1fr;gap:16px;padding:30px 0}.glossary-guidance svg{width:28px;height:28px;color:var(--accent)}.glossary-guidance h2,.glossary-guidance p{margin:0}.glossary-guidance h2{font-size:24px}.glossary-guidance p{margin-top:7px;color:var(--text-soft);font-family:Inter,ui-sans-serif,sans-serif}.glossary-sections{display:grid;gap:44px}.glossary-section>header{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding-bottom:12px;border-bottom:2px solid var(--line-strong)}.glossary-section>header h2{margin:0;font-family:var(--serif);font-size:clamp(28px,3vw,40px);font-weight:400}.glossary-section>header span{color:var(--text-muted);font:12px/1 var(--mono)}.glossary-entry-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.glossary-entry{position:relative;min-height:170px;padding:22px 48px 22px 0;border-bottom:1px solid var(--line)}.glossary-entry:nth-child(odd){padding-right:36px;border-right:1px solid var(--line)}.glossary-entry:nth-child(2n){padding-left:36px}.glossary-entry>div{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.glossary-entry h3{margin:0;font-family:var(--serif);font-size:22px;font-weight:400}.glossary-entry>div span{color:var(--accent);font:12px/1.25 var(--mono);text-align:right;text-transform:uppercase}.glossary-entry p{margin:12px 0 0;color:var(--text-soft);font-family:Inter,ui-sans-serif,sans-serif;line-height:1.65}.glossary-entry>a{position:absolute;top:20px;right:14px;display:grid;width:28px;min-height:28px;place-items:center;color:var(--text-muted);font-family:var(--mono);text-decoration:none}.learning-empty-state{padding:64px 24px;border:1px dashed var(--line-strong);text-align:center}.learning-empty-state h2,.learning-empty-state h3{margin-top:0;font-family:var(--serif);font-size:30px}.learning-empty-state button{min-height:44px;padding:0 18px;border:1px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer}.learning-closing-note{margin-top:56px;padding:34px;border:1px solid var(--line-strong);background:var(--surface-raised)}.learning-closing-note h2{margin-top:0;font-family:var(--serif);font-size:30px}.learning-closing-note>p,.learning-closing-note details{font-family:Inter,ui-sans-serif,sans-serif}.learning-closing-note summary{min-height:44px;cursor:pointer;color:var(--link)}.learning-closing-note a{display:inline-flex;align-items:center;gap:6px;color:var(--link)}.learning-closing-note a svg{width:14px;height:14px}.study-hero{grid-template-columns:minmax(0,1.4fr) minmax(280px,.6fr)}.study-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;color:var(--text-muted);font-family:var(--mono);font-size:12px;text-transform:uppercase}.learning-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:24px}.learning-actions button,.learning-actions a{min-height:46px;margin-top:0;padding:0 17px}.learning-actions button{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-contrast);cursor:pointer}.learning-actions button+button{background:transparent;color:var(--accent)}.study-boundary{display:grid;align-content:center;gap:18px;border:1px solid #475569;border-radius:8px;background:#0f172a}.study-modules,.study-workspace,.study-quiz,.study-export{margin-top:46px}.study-modules>header,.study-toolbar,.study-quiz>header{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.study-modules h2,.study-toolbar h2,.study-quiz h2,.study-export h2{margin:0;font-family:var(--serif);font-size:clamp(28px,3vw,38px);font-weight:400}.study-modules>header button,.study-toolbar>button{display:inline-flex;min-height:44px;align-items:center;gap:8px;padding:0 14px;border:1px solid var(--line);background:var(--surface);color:var(--text-soft);cursor:pointer}.study-modules svg,.study-toolbar svg{width:17px;height:17px}.study-module-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}.study-module-grid button{min-height:190px;padding:20px;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;text-align:left}.study-module-grid button:hover,.study-module-grid button.is-active{background:var(--surface-soft)}.study-module-grid button.is-active{box-shadow:inset 0 4px var(--accent)}.study-module-grid span{display:block;margin-bottom:16px;color:var(--accent);font:12px/1 var(--mono);text-transform:uppercase}.study-module-grid strong{display:block;font-family:var(--serif);font-size:21px;font-weight:400}.study-module-grid small{display:block;margin-top:10px;color:var(--text-muted);font-size:13px;line-height:1.5}.study-workspace{padding:28px;border:1px solid var(--line-strong);background:var(--surface-raised)}.study-toolbar>div span{color:var(--text-muted);font:12px/1.4 var(--mono);text-transform:uppercase}.study-toolbar label{display:flex;width:min(280px,100%);min-height:44px;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--line);background:var(--surface)}.study-toolbar label svg{color:var(--text-muted)}.study-toolbar input{width:100%;border:0;outline:0;background:transparent;color:var(--text)}.study-progress{height:4px;margin-bottom:22px;overflow:hidden;background:var(--line)}.study-progress span{display:block;height:100%;background:var(--accent);transition:width .18s ease}.study-card{display:grid;min-height:380px;align-content:space-between;padding:38px;color:#f8fafc}.study-card>span{color:#fca5a5;font:12px/1 var(--mono);text-transform:uppercase}.study-card__content{display:grid;min-height:190px;place-items:center;padding:28px;text-align:center}.study-card h3{margin:0;font-family:var(--serif);font-size:clamp(42px,6vw,70px);font-weight:400;line-height:1.05}.study-card__content p{max-width:760px;margin:0;color:#f8fafc;font-family:var(--serif);font-size:clamp(22px,3vw,34px);line-height:1.45}.study-reveal{display:inline-flex;min-height:46px;align-items:center;justify-self:center;gap:9px;padding:0 17px;border:1px solid #fca5a5;background:transparent;color:#fecaca;cursor:pointer}.study-reveal svg{width:18px;height:18px}.study-card-controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin-top:18px}.study-card-controls>div{display:flex;gap:8px}.study-card-controls button,.study-complete button,.study-complete a{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:7px;padding:0 14px;border:1px solid var(--line-strong);background:var(--surface);color:var(--text-soft);cursor:pointer}.study-card-controls>button:last-child{justify-self:end}.study-card-controls button:disabled,.study-complete button:disabled{cursor:not-allowed;opacity:.45}.study-card-controls svg{width:16px;height:16px}.study-keyboard-hint{margin:14px 0 0;color:var(--text-muted);font:12px/1.4 var(--mono);text-align:center}.study-complete{display:grid;min-height:380px;place-items:center;align-content:center;padding:40px;border:1px solid var(--success);text-align:center}.study-complete>svg{width:44px;height:44px;color:var(--success)}.study-complete h3{margin:14px 0 0;font-family:var(--serif);font-size:38px}.study-complete p{max-width:620px;color:var(--text-soft)}.study-complete>div{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.study-complete a{text-decoration:none}.study-quiz>header p{margin:0;color:var(--text-muted);font-family:Inter,ui-sans-serif,sans-serif}.study-quiz-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}.study-quiz-grid>article{padding:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.study-quiz-grid h3{min-height:58px;margin:0 0 18px;font-family:var(--serif);font-size:20px;font-weight:400}.study-quiz-grid [role=group]{display:grid;gap:7px}.study-quiz-grid button{display:grid;min-height:44px;grid-template-columns:28px 1fr;align-items:center;padding:8px 12px;border:1px solid var(--line);background:var(--surface);color:var(--text-soft);cursor:pointer;text-align:left}.study-quiz-grid button.is-correct{border-color:var(--success);background:color-mix(in srgb,var(--success) 12%,var(--surface))}.study-quiz-grid button.is-incorrect{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,var(--surface))}.quiz-feedback{margin:12px 0 0;font-family:Inter,ui-sans-serif,sans-serif;font-size:14px}.quiz-feedback.is-correct strong{color:var(--success)}.quiz-feedback.is-incorrect strong{color:var(--danger)}.study-export{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;padding:34px;border:1px solid var(--line-strong);background:var(--surface-raised)}.study-export p{max-width:720px;color:var(--text-soft);font-family:Inter,ui-sans-serif,sans-serif}.study-export .study-trademark{color:var(--text-muted);font-size:13px}.study-export>div:last-child{display:grid;align-content:center;gap:10px}.study-export a{display:inline-flex;min-height:44px;align-items:center;gap:8px;color:var(--link);font-family:Inter,ui-sans-serif,sans-serif;font-size:14px}.study-download{padding:0 16px;border:1px solid var(--accent);color:var(--accent)!important;text-decoration:none}.study-export svg{width:17px;height:17px}.atlas-learning-links{display:grid;gap:8px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.atlas-learning-links h3{margin:0 0 4px;font:12px/1.4 var(--mono);text-transform:uppercase}.atlas-learning-links a,.rail-inline-link{display:inline-flex;min-height:36px;align-items:center;gap:8px;color:var(--link);font-family:Inter,ui-sans-serif,sans-serif;font-size:13px;text-decoration:none}.atlas-learning-links svg{width:17px;height:17px}.status-bar{display:flex;gap:18px}.status-bar__boundary{flex:1 1 auto}@media(max-width:1180px){.learning-hero,.study-hero{grid-template-columns:minmax(0,1fr) 320px}.study-module-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.status-bar{gap:12px;padding-inline:16px}.status-bar__policy{display:none!important}}@media(max-width:820px){.learning-page{padding:22px 16px 80px}.learning-hero,.study-hero,.study-export{grid-template-columns:1fr}.learning-hero h1{font-size:clamp(40px,11vw,58px)}.learning-search-panel,.glossary-entry-list,.study-quiz-grid{grid-template-columns:1fr}.glossary-entry,.glossary-entry:nth-child(odd),.glossary-entry:nth-child(2n){min-height:0;padding:20px 42px 20px 0;border-right:0}.study-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.study-workspace{padding:18px}.study-toolbar{align-items:stretch;flex-direction:column}.study-toolbar label{width:100%}.study-card{min-height:360px;padding:28px}.study-card-controls{display:flex;flex-wrap:wrap;justify-content:space-between}.study-card-controls>div{width:100%;order:-1}.study-card-controls>div button{flex:1}}@media(max-width:520px){.learning-hero{gap:22px}.learning-hero__copy>p{font-size:17px}.learning-filter-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.learning-filter-list button{width:100%}.learning-trust-card,.study-module-grid{grid-template-columns:1fr}.study-module-grid button{min-height:148px}.study-modules>header,.study-quiz>header{align-items:flex-start;flex-direction:column}.study-card{min-height:330px;padding:24px}.study-card__content{min-height:170px;padding:18px 0}.study-card-controls>button{flex:1}.study-export{padding:24px}}@media(max-width:1600px){:root{--header-height: 200px}.app-header{grid-template-rows:minmax(0,1fr) 52px}}@media(max-width:1180px){:root{--header-height: 216px;--atlas-left-rail-width: 230px}.app-header{grid-template-columns:var(--atlas-left-rail-width) minmax(240px,1fr) minmax(400px,auto);grid-template-rows:minmax(0,1fr) 52px}.header-title{padding-inline:14px}.header-title p{font-size:24px}.header-controls{grid-template-columns:minmax(190px,1fr) 140px 44px;gap:8px;padding-inline:10px}.atlas-shell{grid-template-columns:var(--atlas-left-rail-width) minmax(0,1fr)}.atlas-reading-rail{display:none}.canonical-metadata{grid-template-columns:repeat(3,1fr)}}@media(max-width:820px){:root{--header-height: 126px;--status-height: 52px}.app-header{grid-template-columns:minmax(0,1fr) auto;grid-template-rows:minmax(0,1fr) 52px}.header-brand{grid-column:1;grid-row:1}.header-title,.audience-control,.random-problem-button{display:none}.header-controls{grid-column:2;grid-row:1}.header-mini-nav{display:grid;grid-column:1 / -1;grid-row:2}.header-mini-nav a{min-height:50px}.atlas-shell{grid-template-columns:minmax(0,1fr)}.atlas-video-feature{grid-template-columns:1fr;gap:14px}.canonical-grid{grid-template-columns:1fr}.canonical-sidebar,.canonical-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.status-bar{grid-template-columns:repeat(4,auto);gap:14px;overflow-x:auto;padding:0 14px}.status-bar__boundary,.status-bar__count,.status-bar>a{display:none}}@media(max-width:520px){:root{--header-height: 124px;--status-height: 52px}body{overflow:hidden}.brand-button{padding:8px 12px}.brand-button strong{font-size:15px}.header-controls{padding:8px}.header-mini-nav a{font-size:13px}.atlas-index{padding-inline:10px}.atlas-page-heading{align-items:flex-start;flex-direction:column;gap:6px}.atlas-page-heading>p{text-align:left}.atlas-video-feature{margin-inline:0;padding:14px}.atlas-video-feature.is-playing{padding:0}.atlas-video-action button{width:100%}.atlas-video-close{min-height:36px}.atlas-search-row{grid-template-columns:1fr 48px}.atlas-search-row label,.atlas-search-row>button{min-height:44px;height:44px}.atlas-search-row>button span{display:none}.atlas-search-row>button svg{margin:0}.canonical-page{padding:18px 14px 72px}.canonical-hero{grid-template-columns:1fr}.canonical-hero h1{font-size:clamp(34px,12vw,50px)}.canonical-statement{font-size:18px}.canonical-metadata{grid-template-columns:repeat(2,1fr)}.canonical-grid{gap:20px}.canonical-sidebar,.canonical-card-grid,.placement-link-list{grid-template-columns:1fr}.status-bar{display:flex;justify-content:center;overflow:hidden;gap:0}.status-bar>*:not(:first-child){display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media(forced-colors:active){button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid ButtonText}}