@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap";@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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)format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,math,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.19.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.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;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.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{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.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;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.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:.833333em}.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:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.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:1.66667em}.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:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.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:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.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:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.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:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.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:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.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:.416667em}.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:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.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:.833333em}.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:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.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:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.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:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.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:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.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:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.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{width:.12em;display:inline-block}.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{min-width:1px;display:inline-block}.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;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.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{box-sizing:border-box;border:.04em solid}.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{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.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{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.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{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}:root{--bg-body:#0d0e11;--bg-card:#171717;--bg-card-subtle:#1c1c1f;--bg-card-hover:#202024;--bg-input:#1a1a1d;--bg-active-tab:#27282d;--bg-step-row:#171717;--bg-step-hover:#1e1f23;--bg-lec-row:#141416;--bg-table:#171717;--bg-table-row:#171717;--bg-table-hover:#1f2024;--border-subtle:#23252a;--border-card:#27282e;--border-input:#2e3036;--border-active:#444752;--border-orange:#7c3116;--color-orange-primary:#e99347;--color-orange-hover:#f39e55;--color-orange-muted:#2e1e16;--color-orange-glow:#e9934738;--color-easy:#22c55e;--color-easy-bg:#22c55e1f;--color-easy-border:#22c55e47;--color-medium:#f59e0b;--color-medium-bg:#f59e0b1f;--color-medium-border:#f59e0b47;--color-hard:#ef4444;--color-hard-bg:#ef44441f;--color-hard-border:#ef444447;--text-main:#f3f4f6;--text-heading:#fff;--text-muted:#9ca3af;--text-subtle:#6b7280;--text-orange:#e99347;--font-main:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-heading:"Outfit", "Inter", sans-serif;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:14px;--radius-pill:9999px;--transition:all .2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}html{max-width:100%;font-size:108%;overflow-x:clip}body{background-color:var(--bg-body);color:var(--text-main);font-family:var(--font-main);-webkit-font-smoothing:antialiased;max-width:100%;min-height:100vh;line-height:1.5;position:relative;overflow-x:clip}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;outline:none;font-family:inherit}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--bg-body)}::-webkit-scrollbar-thumb{background:#2a2c38;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#393b4c}.app-shell{width:100%;min-height:100vh;display:flex;position:relative}.app-container{box-sizing:border-box;flex:1;width:100%;max-width:1540px;margin:0 auto;padding:24px 28px 24px 72px}.main-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:22px;width:100%;min-width:0;max-width:100%;display:grid}.sheet-main-content{box-sizing:border-box;width:100%;min-width:0;max-width:100%}.sheet-header{margin-bottom:22px}.header-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:8px;display:flex}.title-group{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.sheet-title{font-family:var(--font-heading);color:var(--text-heading);letter-spacing:-.01em;font-size:1.45rem;font-weight:700}.header-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.header-streak-badge{color:#f97316;cursor:pointer;-webkit-user-select:none;user-select:none;background:#1d1e26;border:1px solid #323544;border-radius:9999px;align-items:center;gap:5px;padding:5px 12px;font-size:.84rem;font-weight:700;transition:background .15s,border-color .15s,box-shadow .15s;display:inline-flex}.header-streak-badge:hover{background:#252834;border-color:#f97316;box-shadow:0 0 12px #f973164d}.header-streak-flame{font-size:.95rem;line-height:1}.header-streak-count{font-family:var(--font-heading);letter-spacing:-.01em}.flow-streak-pill{color:#fb923c;letter-spacing:.02em;background:#f973161f;border:1px solid #f9731659;border-radius:6px;align-items:center;gap:4px;padding:3px 8px;font-size:.72rem;font-weight:700;display:inline-flex}.btn-reset{background:var(--color-orange-muted);border:1px solid var(--border-orange);color:var(--color-orange-primary);border-radius:var(--radius-md);transition:var(--transition);align-items:center;gap:6px;padding:6px 14px;font-size:.82rem;font-weight:500;display:inline-flex}.btn-reset:hover{box-shadow:0 0 12px var(--color-orange-glow);background:#3d2319;border-color:#9e3f1e}.btn-import{color:#d1d5db;border-radius:var(--radius-md);transition:var(--transition);background:#202127;border:1px solid #323541;align-items:center;gap:6px;padding:6px 14px;font-size:.82rem;font-weight:500;display:inline-flex}.btn-import:hover{color:#fff;background:#282a32;border-color:#424657}.btn-coming-soon{opacity:.72;cursor:pointer;padding:5px 10px}.btn-coming-soon:hover{opacity:.95;border-color:#475569}.badge-soon{text-transform:uppercase;letter-spacing:.04em;color:#94a3b8;background:#94a3b824;border:1px solid #94a3b847;border-radius:4px;margin-left:4px;padding:1px 4px;font-size:.58rem;font-weight:700;line-height:1.1}.badge-updated{color:var(--text-muted);border-radius:var(--radius-md);letter-spacing:.01em;background:#191a20;border:1px solid #282a35;align-items:center;padding:6px 12px;font-size:.76rem;display:inline-flex}.sheet-subtitle{color:var(--text-muted);font-size:.875rem}.sheet-subtitle a,.sheet-subtitle .know-more-link{color:var(--color-orange-primary);cursor:pointer;transition:var(--transition);margin-left:4px;font-weight:500}.sheet-subtitle a:hover,.sheet-subtitle .know-more-link:hover{color:var(--color-orange-hover);text-decoration:underline}.filter-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px;display:flex}.tabs-group{background:0 0;align-items:center;gap:8px;display:inline-flex}.tab-btn{color:var(--text-muted);border-radius:var(--radius-pill);border:1px solid var(--border-input);background:var(--bg-card);transition:var(--transition);align-items:center;gap:6px;padding:6px 18px;font-size:.84rem;font-weight:500;display:flex}.tab-btn:hover{color:#fff;border-color:#4b4e5a}.tab-btn.active{color:#fff;background:#222329;border-color:#6b7280;font-weight:600}.tab-badge{color:#e5e7eb;border-radius:var(--radius-pill);background:#32343c;padding:1px 7px;font-size:.7rem}.controls-group{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.search-icon{color:var(--text-subtle);pointer-events:none;align-items:center;font-size:.85rem;display:flex;position:absolute;left:12px}.search-input{background:var(--bg-input);border:1px solid var(--border-input);color:var(--text-main);border-radius:var(--radius-md);width:175px;transition:var(--transition);padding:7px 12px 7px 34px;font-size:.82rem}.search-input:focus{border-color:var(--border-active);background:#1f2029;outline:none;width:220px}.search-input::placeholder{color:var(--text-subtle)}.select-wrapper{position:relative}.custom-select{appearance:none;background:var(--bg-input);border:1px solid var(--border-input);color:#d1d5db;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);padding:7px 30px 7px 14px;font-size:.82rem}.custom-select:hover{background:#1e1f27;border-color:#3b3e4f}.custom-select:focus{border-color:var(--border-active);outline:none}.select-arrow{pointer-events:none;color:var(--text-subtle);font-size:.72rem;position:absolute;top:50%;right:11px;transform:translateY(-50%)}.btn-random{background:var(--bg-input);border:1px solid var(--border-input);color:#d1d5db;border-radius:var(--radius-md);transition:var(--transition);align-items:center;gap:6px;padding:7px 14px;font-size:.82rem;display:inline-flex}.btn-random:hover{color:#fff;background:#1e1f27;border-color:#3b3e4f}.overall-progress-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;padding:16px 20px;display:flex}.stat-col{flex-direction:column;flex:1;justify-content:center;gap:5px;display:flex}.total-progress-col{flex-direction:row;flex:1.15;justify-content:space-between;align-items:center;padding-right:12px}.stat-text-group{flex-direction:column;gap:3px;display:flex}.stat-label{color:var(--text-muted);font-size:.8rem;font-weight:500}.stat-value-primary{font-family:var(--font-heading);color:#fff;align-items:baseline;gap:4px;font-size:1.25rem;font-weight:700;display:flex}.stat-slash{color:var(--text-subtle);font-size:.95rem;font-weight:400}.progress-ring-container{justify-content:center;align-items:center;width:52px;height:52px;display:flex;position:relative}.progress-ring{width:52px;height:52px;transform:rotate(-90deg)}.progress-ring-track{stroke:#26201c;stroke-width:4.5px;fill:#0000}.progress-ring-indicator{stroke:var(--color-orange-primary);stroke-width:4.5px;stroke-linecap:round;fill:#0000;transition:stroke-dashoffset .6s cubic-bezier(.4,0,.2,1)}.progress-ring-text{font-family:var(--font-heading);color:#fff;font-size:.82rem;font-weight:700;position:absolute}.stat-divider{background:var(--border-subtle);flex-shrink:0;width:1px;height:48px}.diff-progress-col{flex-direction:column;gap:4px;padding:0 8px;display:flex}.diff-header-row{justify-content:space-between;align-items:center;display:flex}.diff-name{color:#fff;font-size:.84rem;font-weight:600}.diff-count-row{align-items:baseline;gap:4px;font-size:.82rem;display:flex}.diff-completed-count{color:#fff;font-size:.95rem;font-weight:700}.diff-total-slash{color:var(--text-muted);font-size:.78rem}.diff-bar-track{border-radius:var(--radius-pill);background:#2a2b30;width:100%;height:4px;margin-top:3px;overflow:hidden}.diff-bar-fill{border-radius:var(--radius-pill);height:100%;transition:width .4s}.diff-bar-fill.easy-fill{background:var(--color-easy);box-shadow:0 0 6px #22c55e66}.diff-bar-fill.medium-fill{background:var(--color-medium);box-shadow:0 0 6px #f59e0b66}.diff-bar-fill.hard-fill{background:var(--color-hard);box-shadow:0 0 6px #ef444466}.topics-container{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);box-sizing:border-box;flex-direction:column;width:100%;min-width:0;max-width:100%;display:flex;overflow:hidden}.step-card{border-bottom:1px solid var(--border-subtle);background:var(--bg-card);min-width:0;max-width:100%;transition:background .15s}.step-card:last-child{border-bottom:none}.step-header{cursor:pointer;-webkit-user-select:none;user-select:none;transition:var(--transition);background:var(--bg-card);justify-content:space-between;align-items:center;gap:16px;padding:14px 18px;display:flex}.step-header:hover{background:var(--bg-step-hover)}.step-title-group{flex:1;align-items:center;gap:12px;display:flex}.chevron-icon{color:var(--text-subtle);justify-content:center;align-items:center;width:16px;height:16px;font-size:.85rem;transition:transform .25s;display:flex}.step-card.open>.step-header .chevron-icon{color:#d1d5db;transform:rotate(90deg)}.step-title{color:var(--text-heading);font-size:.93rem;font-weight:500}.step-progress-group{align-items:center;gap:16px;display:flex}.progress-bar-track{border-radius:var(--radius-pill);background:#252733;width:130px;height:5px;position:relative;overflow:hidden}.progress-bar-fill{background:var(--color-orange-primary);border-radius:var(--radius-pill);height:100%;transition:width .4s}.step-count{color:var(--text-muted);text-align:right;font-variant-numeric:tabular-nums;min-width:50px;font-size:.82rem}.step-content{background:var(--bg-card);border-top:1px solid var(--border-subtle);box-sizing:border-box;min-width:0;max-width:100%;padding:6px 14px 14px;display:none;overflow:hidden}.step-card.open>.step-content{display:block}.lecture-card{border-radius:var(--radius-md);border:1px solid var(--border-card);background:var(--bg-card);box-sizing:border-box;min-width:0;max-width:100%;margin-top:10px;overflow:hidden}.lecture-header{cursor:pointer;transition:var(--transition);background:#1c1c20;justify-content:space-between;align-items:center;padding:11px 16px;display:flex}.lecture-header:hover{background:#222227}.lecture-title-group{align-items:center;gap:10px;display:flex}.lecture-chevron{color:var(--text-subtle);font-size:.78rem;transition:transform .2s}.lecture-card.open .lecture-chevron{color:#d1d5db;transform:rotate(90deg)}.lecture-title{color:#e5e7eb;font-size:.85rem;font-weight:500}.lecture-progress-group{align-items:center;gap:12px;display:flex}.lecture-progress-track{border-radius:var(--radius-pill);background:#2a2b30;width:90px;height:4px;overflow:hidden}.lecture-progress-fill{background:var(--color-orange-primary);border-radius:var(--radius-pill);height:100%;transition:width .3s}.lecture-count{color:var(--text-muted);font-size:.78rem}.problem-table-container{background:var(--bg-card);display:none;overflow-x:auto}.lecture-card.open .problem-table-container{display:block}.problem-table{border-collapse:collapse;text-align:left;background:var(--bg-card);width:100%}.problem-table th{text-transform:uppercase;letter-spacing:.05em;color:var(--text-subtle);border-bottom:1px solid var(--border-subtle);white-space:nowrap;background:#18191c;padding:10px 14px;font-size:.74rem;font-weight:600}.problem-table td{color:#e5e7eb;vertical-align:middle;background:var(--bg-card);border-bottom:1px solid #202126;padding:11px 14px;font-size:.83rem}.problem-row{background:var(--bg-card);transition:background .15s}.problem-row:hover td{background:#1e1f24}.problem-row.solved{background:#22c55e08}.problem-row.solved .problem-name{color:#9ca3af}.checkbox-cell{text-align:center;width:44px}.custom-checkbox{cursor:pointer;justify-content:center;align-items:center;display:inline-flex;position:relative}.custom-checkbox input{opacity:0;cursor:pointer;width:0;height:0;position:absolute}.checkbox-mark{width:18px;height:18px;transition:var(--transition);background:#18191c;border:1.5px solid #3d3f47;border-radius:4px;justify-content:center;align-items:center;display:flex}.custom-checkbox:hover .checkbox-mark{border-color:var(--color-orange-primary)}.custom-checkbox input:checked~.checkbox-mark{background:var(--color-orange-primary);border-color:var(--color-orange-primary)}.checkbox-mark svg{stroke:#fff;stroke-width:3px;width:12px;height:12px;display:none}.custom-checkbox input:checked~.checkbox-mark svg{display:block}.problem-name-cell{min-width:240px;font-weight:500;line-height:1.45}.problem-name{color:#e5e7eb;word-break:break-word;line-height:1.4;transition:color .15s}.problem-name:hover{color:var(--color-orange-primary)}.icon-plain-btn{border-radius:var(--radius-sm);color:var(--text-muted);transition:var(--transition);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;text-decoration:none;display:inline-flex}.icon-plain-btn.article-icon-btn{color:#9ca3af}.icon-plain-btn.article-icon-btn:hover{color:var(--color-orange-primary);transform:scale(1.18)}.icon-plain-btn.editorial-icon-btn{color:var(--color-orange-primary,#e99347);opacity:.9}.icon-plain-btn.editorial-icon-btn:hover{color:var(--color-orange-hover,#f39e55);opacity:1;transform:scale(1.18)}.icon-plain-btn.youtube-icon-btn{justify-content:center;align-items:center;display:inline-flex}.icon-plain-btn.youtube-icon-btn:hover{filter:drop-shadow(0 0 8px #f009);transform:scale(1.18)}.tuf-icon-link{transition:var(--transition);border-radius:6px;justify-content:center;align-items:center;padding:2px;text-decoration:none;display:inline-flex}.platform-icon-btn{transition:var(--transition);border-radius:6px;justify-content:center;align-items:center;padding:2px;text-decoration:none;display:inline-flex}.resource-icon-btn{border-radius:var(--radius-sm);color:#9ca3af;width:28px;height:28px;transition:var(--transition);background:#1c1d27;border:1px solid #292b3a;justify-content:center;align-items:center;display:inline-flex}.resource-icon-btn:hover{color:#fff;background:#252735;border-color:#3f4258}.platform-badge{border-radius:var(--radius-sm);transition:var(--transition);border:1px solid #0000;align-items:center;padding:3px 9px;font-size:.72rem;font-weight:600;display:inline-flex}.platform-badge.leetcode{color:#f59e0b;background:#f59e0b1f;border-color:#f59e0b4d}.platform-badge.gfg{color:#22c55e;background:#22c55e1f;border-color:#22c55e4d}.platform-badge.codestudio{color:#f87171;background:#ef44441f;border-color:#ef44444d}.platform-badge:hover{filter:brightness(1.15)}.tuf-solve-badge{border-radius:var(--radius-sm);color:#ff7a45;transition:var(--transition);background:#e06b3a24;border:1px solid #e06b3a59;align-items:center;gap:4px;padding:3px 9px;font-size:.72rem;font-weight:600;text-decoration:none;display:inline-flex}.tuf-solve-badge:hover{color:#fff;background:#e06b3a47;border-color:#ff7a45;box-shadow:0 0 10px #e06b3a59}.tuf-icon{font-size:.75rem}.diff-badge{border-radius:var(--radius-pill);align-items:center;gap:5px;padding:3px 9px;font-size:.72rem;font-weight:600;display:inline-flex}.diff-badge.easy{background:var(--color-easy-bg);color:var(--color-easy);border:1px solid var(--color-easy-border)}.diff-badge.medium{background:var(--color-medium-bg);color:var(--color-medium);border:1px solid var(--color-medium-border)}.diff-badge.hard{background:var(--color-hard-bg);color:var(--color-hard);border:1px solid var(--color-hard-border)}.note-btn{color:#6b7280;transition:var(--transition);justify-content:center;align-items:center;font-size:.95rem;display:inline-flex}.note-btn:hover{color:#d1d5db}.note-btn.has-note{color:var(--color-orange-primary)}.sheets-rail{box-sizing:border-box;z-index:1000;-webkit-user-select:none;user-select:none;background:#111215;border:none;border-right:1px solid #23252e;border-radius:0;flex-direction:column;align-items:center;gap:8px;width:44px;height:100vh;padding:14px 0;display:flex;position:fixed;top:0;bottom:0;left:0}.sheets-rail-header{border-bottom:1px solid #ffffff0f;justify-content:center;align-items:center;width:100%;padding-bottom:8px;display:flex}.sheets-rail-brand-icon{color:#838a98;-webkit-user-select:none;user-select:none;border-radius:4px;justify-content:center;align-items:center;width:28px;height:28px;transition:color .15s,background-color .15s,transform .15s;display:flex}.sheets-rail-brand-icon:hover{opacity:.85}.sheets-rail-nav{flex-direction:column;align-items:center;gap:4px;width:100%;display:flex}.sheets-rail-item{color:#7b8290;cursor:pointer;-webkit-user-select:none;user-select:none;background:0 0;border:none;border-radius:0;justify-content:center;align-items:center;width:44px;height:42px;transition:background-color .15s,color .15s;display:flex;position:relative}.sheets-rail-item:hover{color:#f3f4f6;background:#1a1c22}.sheets-rail-item.is-active{color:#e99347;background:#e993471f}.sheets-rail-icon-box{justify-content:center;align-items:center;display:flex;position:relative}.sheets-rail-badge{color:#e99347;background:#252732;border:1px solid #e9934759;border-radius:2px;padding:1px 3px;font-size:7.5px;font-weight:800;line-height:1;position:absolute;top:-5px;right:-8px}.upcoming-sheet-preview{text-align:center;box-sizing:border-box;background:#17181c;border:1px solid #282a32;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:48px 24px;display:flex}.upcoming-sheet-badge-row{justify-content:center;display:flex}.upcoming-sheet-pill{text-transform:uppercase;letter-spacing:.05em;color:#e99347;background:#e993471f;border:1px solid #e993474d;border-radius:9999px;padding:3px 10px;font-size:.72rem;font-weight:700}.upcoming-sheet-title{color:#fff;font-size:1.35rem;font-weight:700;font-family:var(--font-heading);margin:0}.upcoming-sheet-desc{color:#9ca3af;max-width:480px;margin:0;font-size:.88rem;line-height:1.5}.btn-back-to-a2z{color:#e99347;cursor:pointer;background:#e9934726;border:1px solid #e9934759;border-radius:8px;margin-top:8px;padding:8px 18px;font-size:.84rem;font-weight:600;transition:all .18s}.btn-back-to-a2z:hover{background:#e9934740;border-color:#e99347}.sidebar{flex-direction:column;gap:16px;display:flex;position:sticky;top:20px}.flow-card{background:#17181c;border:1px solid #282a32;border-radius:12px;flex-direction:column;gap:10px;padding:16px;transition:border-color .2s,box-shadow .2s;display:flex;position:relative}.flow-card:hover{border-color:#3b3e4a;box-shadow:0 4px 16px #0006}.try-flow-peeking-nudge{z-index:5;cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:center;align-items:flex-end;margin-bottom:-6px;display:flex;position:absolute;bottom:100%;left:50%;transform:translate(-50%)}.try-flow-peeking-badge{transform-origin:bottom;background:#fbf7ee;border:1.5px solid #23252e;border-radius:6px;justify-content:center;align-items:center;padding:3px 13px;transition:transform .2s cubic-bezier(.34,1.56,.64,1),border-color .18s;animation:2.8s ease-in-out infinite tryFlowFloat;display:inline-flex;position:relative;box-shadow:0 3px 8px #0006}.try-flow-board-text{font-family:var(--font-heading);color:#17181f;letter-spacing:-.01em;align-items:center;gap:3px;font-size:.74rem;font-weight:700;line-height:1.25;display:flex}.try-flow-board-smiley{color:#e99347;font-size:.78rem;font-weight:800}.try-flow-mini-hand{pointer-events:none;filter:drop-shadow(0 1px 2px #0000004d);position:absolute;bottom:-6px}.try-flow-mini-hand-left{left:7px}.try-flow-mini-hand-right{right:7px}@keyframes tryFlowFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}.try-flow-peeking-nudge:hover .try-flow-peeking-badge{border-color:#e99347;transform:translateY(-4px)}.flow-card-header{flex-direction:column;display:flex}.flow-hero-art{cursor:pointer;background:#090a0e;border:1px solid #ffffff14;border-radius:9px;width:100%;transition:all .22s;position:relative;overflow:hidden;box-shadow:0 4px 16px #00000073}.flow-hero-art:hover{border-color:#e06b3a73;box-shadow:0 6px 22px #0009,0 0 14px #e06b3a1f}.flow-hero-img{object-fit:cover;object-position:center 48%;width:100%;height:102px;transition:transform .3s;display:block}.flow-hero-art:hover .flow-hero-img{transform:scale(1.025)}.flow-tags-row{justify-content:space-between;align-items:center;width:100%;margin-top:8px;display:flex}.flow-heading{font-family:var(--font-heading);color:#fff;letter-spacing:-.025em;align-items:center;margin:0;font-size:1.22rem;font-weight:800;line-height:1.15;display:inline-flex}.flow-badge-beta{text-transform:uppercase;letter-spacing:.08em;color:#94a3b8;-webkit-user-select:none;user-select:none;background:#ffffff0a;border:1px solid #ffffff14;border-radius:4px;align-items:center;padding:2px 6px;font-size:.58rem;font-weight:600;line-height:1.2;display:inline-flex}.flow-subheading-pale{color:#8e95a5;letter-spacing:.025em;text-transform:lowercase;margin-top:3px;font-size:.74rem;font-weight:500}.flow-desc{color:#94a3b8;margin:0;font-size:.78rem;line-height:1.45}.flow-card-footer{margin-top:4px}.btn-flow-cta{color:#f1f5f9;cursor:pointer;text-align:center;background:#23252d;border:1px solid #363946;border-radius:7px;width:100%;padding:8px 14px;font-size:.82rem;font-weight:600;transition:background .15s,border-color .15s,color .15s}.btn-flow-cta:hover{color:#fff;background:#2c2f3a;border-color:#e06b3a}.sidebar-contests-panel{background:var(--bg-card,#171717);border:1px solid var(--border-card,#27282e);border-radius:4px;flex-direction:column;display:flex;overflow:hidden}.sidebar-contest-row{color:inherit;border-bottom:1px solid #202228;justify-content:space-between;align-items:center;padding:8px 12px;text-decoration:none;transition:background .15s;display:flex}.sidebar-contest-row:last-child{border-bottom:none}.sidebar-contest-row:hover{background:#1e1f24}.sidebar-contest-left{align-items:center;gap:8px;min-width:0;display:flex}.sidebar-contest-name{color:#e5e7eb;white-space:nowrap;font-size:.8rem;font-weight:500}.sidebar-contest-row:hover .sidebar-contest-name{color:#fff}.sidebar-contest-right{flex-shrink:0;align-items:center;gap:6px;display:flex}.sidebar-contest-time{color:#9ca3af;font-variant-numeric:tabular-nums;letter-spacing:.01em;font-size:.74rem}.sidebar-contest-time.is-imminent{color:#e99347;font-weight:500}.sidebar-contest-time.is-live{color:#ef4444;font-weight:600}.sidebar-contest-arrow{color:#4b5563;transition:transform .15s,color .15s}.sidebar-contest-row:hover .sidebar-contest-arrow{color:#d1d5db;transform:translate(1px,-1px)}.random-results-container{flex-direction:column;gap:12px;animation:.2s modalFadeIn;display:flex}.random-results-container .problem-table-container{background:#17181c;border:1px solid #282a32;border-radius:10px;overflow:hidden;display:block!important}.random-results-header{background:#17181c;border:1px solid #282a32;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;display:flex}.random-header-left{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.random-tag-pill{color:#fff;background:var(--color-orange-primary);text-transform:uppercase;letter-spacing:.04em;border-radius:9999px;padding:3px 9px;font-size:.72rem;font-weight:700}.random-topic-hint{color:#94a3b8;font-size:.8rem;font-weight:500}.random-header-actions{align-items:center;gap:8px;display:flex}.btn-random-action{cursor:pointer;border-radius:6px;align-items:center;gap:6px;padding:6px 12px;font-size:.78rem;font-weight:600;transition:all .15s;display:inline-flex}.btn-pick-another{color:#fff;background:#23252e;border:1px solid #383b49}.btn-pick-another:hover{border-color:var(--color-orange-primary);color:#fff;background:#2c2f3c}.btn-exit-random{color:#8892b0;background:0 0;border:1px solid #0000}.btn-exit-random:hover{color:#fff;background:#20222a;border-color:#313442}.btn-random.active{border-color:var(--color-orange-primary);color:#fff;background:#e06b3a33}.search-results-container{flex-direction:column;gap:12px;animation:.18s modalFadeIn;display:flex}.search-results-container .problem-table-container{background:#17181c;border:1px solid #282a32;border-radius:10px;overflow:hidden;display:block!important}.search-results-header{color:#94a3b8;background:#17181c;border:1px solid #282a32;border-radius:8px;justify-content:space-between;align-items:center;padding:8px 14px;font-size:.82rem;display:flex}.search-results-count{color:#fff;font-weight:700}.search-query-highlight{color:#f38b4d;font-weight:600}.search-results-clear-link{color:#64748b;cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:.78rem;transition:color .15s}.search-results-clear-link:hover{color:#fff}.search-topic-cell{max-width:140px}.search-topic-badge{text-overflow:ellipsis;white-space:nowrap;color:#8b95a5;background:#ffffff0d;border:1px solid #ffffff0f;border-radius:5px;max-width:130px;padding:3px 8px;font-size:.68rem;font-weight:600;display:inline-block;overflow:hidden}.search-no-results{text-align:center;background:#17181c;border:1px solid #282a32;border-radius:12px;flex-direction:column;align-items:center;gap:14px;padding:40px 20px;display:flex}.search-no-results-text{color:#8892b0;margin:0;font-size:.92rem}.btn-clear-search{color:#f1f5f9;cursor:pointer;background:#23252d;border:1px solid #363946;border-radius:7px;padding:8px 18px;font-size:.82rem;font-weight:600;transition:background .15s,border-color .15s}.btn-clear-search:hover{background:#2e313d;border-color:#4f5364}.sidebar-utility-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);flex-direction:column;gap:14px;padding:16px;display:flex}.streak-banner{border-radius:var(--radius-md);background:linear-gradient(135deg,#e06b3a1f,#f59e0b0d);border:1px solid #e06b3a40;justify-content:space-between;align-items:center;padding:12px 14px;display:flex}.streak-left{align-items:center;gap:10px;display:flex}.streak-flame{font-size:1.4rem}.streak-label{color:var(--text-muted);font-size:.75rem}.streak-count{font-family:var(--font-heading);color:#fff;font-size:.95rem;font-weight:700}.quick-jump-title{color:var(--text-subtle);text-transform:uppercase;letter-spacing:.05em;font-size:.76rem;font-weight:600}.quick-jump-select{background:var(--bg-input);border:1px solid var(--border-input);color:#e5e7eb;border-radius:var(--radius-md);cursor:pointer;width:100%;padding:8px 12px;font-size:.8rem}.quick-jump-select:focus{border-color:var(--border-active);outline:none}.sidebar-action-pill{border-radius:var(--radius-pill);color:#d1d5db;width:100%;transition:var(--transition);background:#1b1c24;border:1px solid #272836;justify-content:space-between;align-items:center;padding:10px 18px;font-size:.84rem;font-weight:500;display:flex}.sidebar-action-pill:hover{color:#fff;background:#232532;border-color:#3b3e52}.lock-badge{color:var(--color-orange-primary);background:#2e1d17;border:1px solid #73341b;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.72rem;display:inline-flex}.unlocked-badge{color:#22c55e;background:#1d2720;border:1px solid #1f6b3b;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.72rem;display:inline-flex}.modal-overlay,.modal-backdrop{-webkit-backdrop-filter:blur(8px)!important;z-index:99999!important;box-sizing:border-box!important;background:#000000c7!important;justify-content:center!important;align-items:center!important;width:100vw!important;height:100vh!important;margin:0!important;padding:20px!important;display:flex!important;position:fixed!important;inset:0!important;overflow-y:auto!important}.modal-overlay:not(.active){display:none!important}.modal-card{border-radius:var(--radius-lg);background:#17181f;border:1px solid #2c2e3e;width:100%;max-width:540px;animation:.2s cubic-bezier(.16,1,.3,1) modalFadeIn;overflow:hidden;box-shadow:0 20px 40px #0009;margin:auto!important;position:relative!important}@keyframes modalFadeIn{0%{opacity:0;transform:scale(.95)translateY(10px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal-header{border-bottom:1px solid #242634;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-title{color:#fff;font-size:1.05rem;font-weight:600}.modal-close-btn{color:var(--text-subtle);transition:var(--transition);font-size:1.2rem}.modal-close-btn:hover{color:#fff}.modal-body{color:#d1d5db;flex-direction:column;gap:14px;padding:20px;font-size:.88rem;display:flex}.modal-input{background:var(--bg-input);border:1px solid var(--border-input);color:#fff;border-radius:var(--radius-md);width:100%;padding:10px 14px;font-size:.85rem}.modal-input:focus{border-color:var(--color-orange-primary);outline:none}.modal-textarea{background:var(--bg-input);border:1px solid var(--border-input);color:#fff;border-radius:var(--radius-md);resize:vertical;width:100%;min-height:140px;padding:12px 14px;font-family:inherit;font-size:.85rem}.modal-textarea:focus{border-color:var(--color-orange-primary);outline:none}.modal-footer{border-top:1px solid #242634;justify-content:flex-end;align-items:center;gap:10px;padding:14px 20px;display:flex}.btn-secondary{color:#d1d5db;border-radius:var(--radius-md);transition:var(--transition);background:#232532;border:1px solid #333647;padding:8px 16px;font-size:.82rem;font-weight:500}.btn-secondary:hover{color:#fff;background:#2b2d3c}.btn-primary{background:var(--color-orange-primary);border:1px solid var(--color-orange-hover);color:#fff;border-radius:var(--radius-md);transition:var(--transition);padding:8px 18px;font-size:.82rem;font-weight:600}.btn-primary:hover{background:var(--color-orange-hover)}.btn-danger{color:#fff;border-radius:var(--radius-md);transition:var(--transition);background:#991b1b;border:1px solid #b91c1c;padding:8px 18px;font-size:.82rem;font-weight:600}.btn-danger:hover{background:#b91c1c}.toast{color:#fff;border-radius:var(--radius-md);opacity:0;z-index:2000;background:#1e202b;border:1px solid #35384b;align-items:center;gap:10px;padding:12px 20px;font-size:.85rem;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;position:fixed;bottom:24px;right:24px;transform:translateY(100px);box-shadow:0 10px 25px #00000080}.toast.show{opacity:1;transform:translateY(0)}.problem-row.highlighted{animation:2.5s pulseRow}@keyframes pulseRow{0%{background-color:#e06b3a59}50%{background-color:#e06b3a26}to{background-color:#0000}}@media (width<=1080px){.main-layout{grid-template-columns:1fr;gap:16px}.sidebar{grid-column:1/-1;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;width:100%;display:grid;position:static}}@media (width<=768px){.app-shell{flex-direction:column}.sheets-rail{border-bottom:1px solid #23252e;border-right:none;flex-direction:row;justify-content:flex-start;gap:12px;width:100%;height:auto;padding:6px 12px;position:static}.sheets-rail-header{border-bottom:none;border-right:1px solid #ffffff14;width:auto;padding-bottom:0;padding-right:10px}.sheets-rail-nav{flex-direction:row;gap:6px;width:auto}.sheets-rail-active-pill{width:auto;height:2.5px;inset:auto 0 0}.main-layout{grid-template-columns:1fr;gap:14px}.app-container{padding:16px 14px}.sheet-title{font-size:1.25rem}.header-actions{justify-content:flex-start;gap:8px;width:100%}.overall-progress-card{grid-template-columns:1fr 1fr;gap:14px 16px;padding:14px 16px;display:grid}.stat-divider{display:none}.total-progress-col{border-bottom:1px solid #ffffff12;grid-column:1/-1;padding-bottom:12px;padding-right:0}.filter-toolbar{flex-direction:column;align-items:stretch;gap:10px;margin-bottom:16px}.tabs-group{width:100%;display:flex}.tab-btn{flex:1;justify-content:center;padding:7px 12px;font-size:.8rem}.controls-group{grid-template-columns:1fr 1fr;gap:8px;width:100%;display:grid}.search-wrapper{grid-column:1/-1;width:100%}.search-input{width:100%!important}.select-wrapper,.custom-select{width:100%}.btn-random{grid-column:1/-1;justify-content:center;width:100%;padding:8px 14px}.step-progress-group{gap:8px}.progress-bar-track{width:70px}.modal-overlay{padding:12px!important}.flow-modal-card{width:98vw;max-height:94vh}.flow-modal-top,.flow-modal-body{padding:12px 14px}}@media (width<=640px){.app-container{padding:12px 10px}.sheet-title{font-size:1.12rem;line-height:1.35}.header-actions{-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap;padding-bottom:4px;display:flex;overflow-x:auto}.header-actions::-webkit-scrollbar{display:none}.header-actions>*{flex-shrink:0}.sheet-subtitle{font-size:.76rem}.sidebar{flex-direction:column;gap:14px;display:flex}.problem-table-container{-webkit-overflow-scrolling:touch;border-radius:8px;margin:0 -2px}.problem-table{min-width:560px}.problem-table th,.problem-table td{padding:9px 8px;font-size:.78rem}.step-header{padding:11px 12px}.step-title{font-size:.88rem}.step-badge{padding:1px 6px;font-size:.7rem}.step-count{font-size:.72rem}.progress-bar-track{width:50px}.lecture-header{padding:9px 11px}.lecture-title{font-size:.8rem}.lecture-progress-track{width:44px}.flow-status-bar{flex-direction:column;align-items:flex-start;gap:8px}.flow-today-split{grid-template-columns:1fr}.flow-week-strip{grid-template-columns:repeat(7,minmax(38px,1fr));padding:6px;overflow-x:auto}.flow-week-day{padding:6px 2px;font-size:.72rem}.flow-task-panel,.flow-progress-panel{padding:11px}.flow-problem-card{padding:9px 10px}.flow-features-popover{width:calc(100vw - 28px);max-width:320px}.clean-auth-input,.search-input,.custom-select,.flow-text-input{font-size:16px!important}}@media (width<=480px){.overall-progress-card{grid-template-columns:1fr;gap:12px}.total-progress-col{padding-bottom:8px}.controls-group{grid-template-columns:1fr}.flow-modal-card{border-radius:10px}.flow-modal-title-logo{height:28px}.modal-overlay{padding:6px!important}.auth-modal-card,.feedback-modal-card{width:96vw!important;padding:16px 12px!important}}.tuf-icon-link,.platform-icon-btn{border-radius:6px;justify-content:center;align-items:center;padding:2px 4px;text-decoration:none;transition:transform .15s,filter .15s;display:inline-flex}.tuf-icon-link:hover{filter:drop-shadow(0 2px 6px #ea580c66);transform:translateY(-1px)scale(1.1)}.platform-icon-btn:hover{filter:drop-shadow(0 2px 6px #ffa11659);transform:translateY(-1px)scale(1.1)}.tuf-logo-img{border-radius:4px;display:block}.gfg-logo-img{border-radius:3px;display:block}.star-btn{cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:4px;transition:transform .15s,background .15s;display:inline-flex}.star-btn:hover{background:#f59e0b1f;transform:scale(1.2)}.star-btn:hover svg{stroke:#f59e0b}.star-btn.starred svg{filter:drop-shadow(0 0 5px #f59e0b99)}.btn-login-cta{color:#f3f4f6;border-radius:var(--radius-md);transition:var(--transition);cursor:pointer;background:#1c1d22;border:1px solid #333640;align-items:center;gap:7px;padding:6px 14px;font-size:.82rem;font-weight:600;display:inline-flex}.btn-login-cta:hover{border-color:var(--color-orange-primary);color:#fff;background:#252730;box-shadow:0 0 10px #e9934733}.user-logged-group{align-items:center;gap:10px;display:inline-flex}.sync-pill{color:#9ca3af;border-radius:var(--radius-pill);transition:var(--transition);background:#16171b;border:1px solid #26282e;align-items:center;gap:4px;padding:4px 10px;font-size:.74rem;display:inline-flex}.sync-pill.syncing{color:var(--color-orange-primary);border-color:#e9934759;animation:1.2s infinite pulseSync}@keyframes pulseSync{0%{opacity:.7}50%{opacity:1}to{opacity:.7}}.user-profile-pill{border-radius:var(--radius-pill);background:#191a20;border:1px solid #282a35;align-items:center;gap:8px;padding:3px 10px 3px 4px;display:inline-flex}.user-avatar-circle{background:var(--color-orange-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.75rem;font-weight:700;display:flex}.user-display-name{color:#f3f4f6;font-size:.82rem;font-weight:600}.btn-logout{color:#9ca3af;cursor:pointer;transition:var(--transition);background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:.74rem}.btn-logout:hover{color:#ef4444;background:#ef44441a}.auth-modal-card{color:#f1f5f9;box-sizing:border-box;background:#17181c;border:1px solid #282a32;border-radius:12px;width:100%;max-width:420px;padding:24px;box-shadow:0 24px 60px #000000bf,0 0 0 1px #ffffff0d;margin:auto!important;position:relative!important}.auth-modal-card .modal-header{border-bottom:1px solid #242630;justify-content:space-between;align-items:flex-start;margin-bottom:0;padding:0 0 14px;display:flex}.auth-modal-card .modal-title{color:#fff;margin:0;font-size:1.15rem;font-weight:700;line-height:1.2}.auth-subtitle{color:#8b92a4;margin-top:5px;margin-bottom:0;font-size:.8rem;line-height:1.4}.auth-modal-card .modal-close-btn{color:#8b92a4;cursor:pointer;background:0 0;border:none;padding:4px;font-size:1.1rem;line-height:1;transition:color .15s}.auth-modal-card .modal-close-btn:hover{color:#fff}.auth-tabs{background:#101114;border:1px solid #22242c;border-radius:8px;gap:4px;margin:16px 0;padding:3px;display:flex}.auth-tab-btn{color:#8b92a4;cursor:pointer;text-align:center;background:0 0;border:none;border-radius:6px;flex:1;padding:8px 12px;font-size:.82rem;font-weight:500;transition:all .15s}.auth-tab-btn.active{color:#fff;background:#23252e;font-weight:600;box-shadow:0 2px 4px #00000040}.auth-error-banner{color:#fca5a5;background:#ef44441f;border:1px solid #ef44444d;border-radius:8px;align-items:center;gap:8px;margin-bottom:16px;padding:10px 14px;font-size:.82rem;display:flex}.auth-form{flex-direction:column;display:flex}.form-group{flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.form-group label{color:#94a3b8;font-size:.8rem;font-weight:500}.clean-auth-input{color:#fff;box-sizing:border-box;background:#101114;border:1px solid #282a32;border-radius:8px;outline:none;width:100%;padding:10px 14px;font-family:inherit;font-size:.88rem;transition:border-color .15s,box-shadow .15s}.clean-auth-input:focus{border-color:var(--color-orange-primary);background:#131418;box-shadow:0 0 0 2px #e9934733}.clean-auth-input::placeholder{color:#4b5563}.label-with-action{justify-content:space-between;align-items:center;display:flex}.btn-toggle-pw{color:var(--color-orange-primary);cursor:pointer;background:0 0;border:none;padding:0;font-size:.76rem}.btn-toggle-pw:hover{text-decoration:underline}.checkbox-label-sync{color:#9ca3af;cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:8px;margin-top:2px;margin-bottom:14px;font-size:.78rem;display:flex}.checkbox-label-sync input{accent-color:var(--color-orange-primary);cursor:pointer;width:15px;height:15px}.auth-submit-btn{background:var(--color-orange-primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:10px 20px;font-size:.88rem;font-weight:600;transition:background .15s,box-shadow .15s}.auth-submit-btn:hover{background:var(--color-orange-hover);box-shadow:0 0 12px #e9934759}.auth-submit-btn:disabled{opacity:.6;cursor:not-allowed}.search-wrapper{align-items:center;display:flex;position:relative}.search-clear-btn{color:#6b7280;cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 5px;font-size:.78rem;line-height:1;transition:color .15s;position:absolute;top:50%;right:10px;transform:translateY(-50%)}.search-clear-btn:hover{color:#fff}.flow-modal-card{background:#141519;border:1px solid #282a34;border-radius:14px;flex-direction:column;width:94vw;max-width:880px;max-height:90vh;display:flex;overflow:hidden;box-shadow:0 24px 60px #000000bf,0 0 1px 1px #ffffff0d}.flow-modal-top{background:#181920;border-bottom:1px solid #22242e;padding:16px 22px}.flow-modal-title-logo{object-fit:contain;filter:drop-shadow(0 0 12px #e06b3a33);width:auto;height:38px;transition:transform .2s,filter .2s;display:block}.flow-modal-title-logo:hover{filter:drop-shadow(0 0 16px #e06b3a66);transform:scale(1.02)}.flow-title-tag{text-transform:uppercase;letter-spacing:.06em;color:#f39e55;background:#e06b3a24;border:1px solid #e06b3a47;border-radius:999px;padding:2px 8px;font-size:.72rem;font-weight:600}.flow-modal-body{background:#141519;max-height:calc(90vh - 80px);padding:22px;overflow:hidden auto}.flow-mode-screen{flex-direction:column;gap:20px;animation:.2s fadeIn;display:flex}.flow-mode-header{text-align:center;flex-direction:column;align-items:center;gap:6px;padding:6px 16px;display:flex}.flow-pill-banner{color:var(--color-orange-primary);background:#e06b3a1a;border:1px solid #e06b3a40;border-radius:20px;margin-bottom:4px;padding:3px 12px;font-size:.75rem;font-weight:600;display:inline-block}.flow-screen-title{font-family:var(--font-heading);color:#fff;letter-spacing:-.02em;margin:0;font-size:1.45rem;font-weight:700}.flow-mode-subtitle{color:#94a3b8;max-width:520px;margin:0;font-size:.86rem;line-height:1.5}.flow-mode-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.flow-mode-card{text-align:left;cursor:pointer;background:#191b22;border:1px solid #282a36;border-radius:12px;flex-direction:column;align-items:flex-start;padding:18px;transition:all .18s;display:flex}.flow-mode-card:hover{border-color:var(--color-orange-primary);background:#20232c;transform:translateY(-2px);box-shadow:0 8px 24px #e06b3a1f}.flow-mode-card-top{margin-bottom:8px}.flow-mode-tag{text-transform:uppercase;letter-spacing:.05em;color:#a0aec0;background:#262934;border-radius:4px;padding:2px 7px;font-size:.68rem;font-weight:700}.flow-mode-card-title{font-family:var(--font-heading);color:#fff;margin-bottom:6px;font-size:1.08rem;font-weight:700}.flow-mode-card-desc{color:#8c93a4;font-size:.8rem;line-height:1.45}.flow-config-screen{flex-direction:column;gap:18px;animation:.2s fadeIn;display:flex}.flow-config-header{border-bottom:1px solid #232530;align-items:center;gap:16px;padding-bottom:14px;display:flex}.flow-back-btn{color:#cbd5e1;cursor:pointer;background:#1f212a;border:1px solid #2d303d;border-radius:7px;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;font-weight:500;transition:all .15s;display:flex}.flow-back-btn:hover{color:#fff;background:#282a36;border-color:#404455}.flow-config-title-group h3{color:#fff;margin:0;font-size:1.22rem;font-weight:700}.flow-config-subtitle{color:#8b92a4;margin:2px 0 0;font-size:.78rem}.flow-config-body{flex-direction:column;gap:14px;display:flex}.flow-config-card{background:#181a21;border:1px solid #262834;border-radius:10px;flex-direction:column;gap:10px;padding:14px 16px;display:flex}.flow-card-head{justify-content:space-between;align-items:center;display:flex}.flow-label{color:#f1f5f9;font-size:.86rem;font-weight:600}.flow-hint-pill{color:#f39e55;background:#e06b3a1a;border-radius:6px;padding:2px 8px;font-size:.74rem;font-weight:500}.flow-sublabel{color:#7b8292;margin-top:2px;font-size:.74rem;display:block}.flow-date-input-wrap{align-items:center;display:flex}.flow-date-input{color:#f1f5f9;background:#121317;border:1px solid #2d303c;border-radius:7px;outline:none;width:100%;padding:8px 12px;font-family:inherit;font-size:.86rem;transition:border-color .15s}.flow-date-input:focus{border-color:var(--color-orange-primary)}.flow-date-helper{background:#1e293b66;border:1px solid #33415580;border-radius:6px;justify-content:space-between;align-items:center;gap:8px;margin-top:8px;padding:6px 10px;display:flex}.flow-date-helper-text{color:#94a3b8;font-size:.74rem}.flow-date-helper-text strong{color:#38bdf8}.flow-date-autofill-btn{color:#38bdf8;cursor:pointer;white-space:nowrap;background:#38bdf824;border:1px solid #38bdf859;border-radius:4px;padding:2px 8px;font-size:.68rem;font-weight:600;transition:all .15s}.flow-date-autofill-btn:hover{color:#fff;background:#38bdf840}.flow-two-col-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.flow-three-col-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.flow-input-field{flex-direction:column;gap:6px;display:flex}.flow-field-label{color:#94a3b8;font-size:.76rem;font-weight:500}.flow-select{color:#f1f5f9;cursor:pointer;background:#121317;border:1px solid #2d303c;border-radius:7px;outline:none;padding:8px 12px;font-family:inherit;font-size:.84rem;transition:border-color .15s}.flow-select:focus{border-color:var(--color-orange-primary)}.flow-rest-days{flex-wrap:wrap;gap:8px;display:flex}.flow-rest-day-btn{color:#94a3b8;cursor:pointer;text-align:center;background:#141519;border:1px solid #2a2c38;border-radius:7px;flex:1;min-width:48px;padding:8px 4px;font-size:.8rem;font-weight:600;transition:all .15s}.flow-rest-day-btn:hover{color:#fff;background:#1e2028;border-color:#3e4252}.flow-rest-day-btn.active{border-color:var(--color-orange-primary);color:#f39e55;background:#e06b3a26}.flow-time-field{flex-direction:column;gap:6px;display:flex}.flow-diff-pill{text-transform:uppercase;border-radius:4px;width:fit-content;padding:2px 6px;font-size:.72rem;font-weight:700}.flow-num-input-wrap{background:#121317;border:1px solid #2d303c;border-radius:7px;align-items:center;padding-right:8px;display:flex;overflow:hidden}.flow-num-input-wrap:focus-within{border-color:var(--color-orange-primary)}.flow-number-input{color:#f1f5f9;background:0 0;border:none;outline:none;width:100%;padding:8px 10px;font-family:inherit;font-size:.86rem}.flow-unit{color:#6b7280;font-size:.74rem;font-weight:500}.flow-toggle-row{cursor:pointer;align-items:flex-start;gap:12px;display:flex}.flow-checkbox{accent-color:var(--color-orange-primary);cursor:pointer;width:18px;height:18px;margin-top:2px}.flow-toggle-text{flex-direction:column;gap:2px;display:flex}.flow-toggle-title{color:#f1f5f9;font-size:.86rem;font-weight:600}.flow-toggle-desc{color:#8a91a2;font-size:.76rem;line-height:1.4}.flow-step-actions{align-items:center;gap:6px;display:flex}.flow-text-btn{color:var(--color-orange-primary);cursor:pointer;background:0 0;border:none;padding:0;font-size:.75rem;font-weight:600}.flow-text-btn:hover{text-decoration:underline}.flow-sep{color:#4b5563;font-size:.7rem}.flow-step-chips-container{flex-wrap:wrap;gap:8px;max-height:180px;padding-right:4px;display:flex;overflow-y:auto}.flow-step-chip{cursor:pointer;color:#94a3b8;background:#131418;border:1px solid #282a36;border-radius:8px;align-items:center;gap:8px;padding:6px 10px;transition:all .15s;display:flex}.flow-step-chip:hover{color:#fff;border-color:#3e4252}.flow-step-chip.active{color:#fff;background:#e06b3a1f;border-color:#e06b3a66}.flow-chip-status{color:var(--color-orange-primary);font-size:.72rem;font-weight:700}.flow-chip-title{font-size:.78rem;font-weight:500}.flow-chip-count{color:#71717a;background:#1c1d24;border-radius:4px;padding:1px 6px;font-size:.7rem}.flow-scope-summary-banner{background:#121317;border:1px solid #22242e;border-radius:10px;justify-content:space-around;align-items:center;padding:12px 16px;display:flex}.flow-scope-stat{flex-direction:column;align-items:center;gap:2px;display:flex}.flow-scope-val{font-family:var(--font-heading);color:#fff;font-size:1.15rem;font-weight:700}.flow-scope-key{color:#8c93a4;text-transform:uppercase;letter-spacing:.04em;font-size:.72rem}.flow-scope-stat.highlight .flow-scope-val{color:var(--color-orange-primary)}.flow-scope-divider{background:#232530;width:1px;height:28px}.flow-config-footer{margin-top:4px}.flow-cta-generate{color:#fff;cursor:pointer;background:linear-gradient(135deg,#e06b3a 0%,#d45927 100%);border:1px solid #f39e55;border-radius:9px;width:100%;padding:11px 20px;font-size:.92rem;font-weight:600;transition:all .15s;box-shadow:0 4px 16px #e06b3a59}.flow-cta-generate:hover{background:linear-gradient(135deg,#ea7847 0%,#df6230 100%);transform:translateY(-1px);box-shadow:0 6px 20px #e06b3a73}.flow-schedule-view{flex-direction:column;gap:16px;animation:.2s fadeIn;display:flex}.flow-status-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.flow-status-left{align-items:center;gap:12px;display:flex}.flow-status-progress{align-items:baseline;gap:4px;display:flex}.flow-status-count{font-family:var(--font-heading);color:#fff;font-size:1.35rem;font-weight:700}.flow-status-sep{color:#64748b;font-size:.9rem}.flow-status-total{color:#94a3b8;font-size:.98rem;font-weight:600}.flow-status-label{color:#71717a;margin-left:2px;font-size:.78rem}.flow-status-badge{border-radius:999px;padding:3px 9px;font-size:.75rem;font-weight:600}.flow-status-on_track{color:#4ade80;background:#22c55e1f;border:1px solid #22c55e40}.flow-status-ahead{color:#60a5fa;background:#3b82f61f;border:1px solid #3b82f640}.flow-status-behind{color:#f87171;background:#ef44441f;border:1px solid #ef444440}.flow-status-expired{color:#fbbf24;background:#f59e0b1f;border:1px solid #f59e0b40}.flow-days-left{color:#94a3b8;background:#1a1c24;border:1px solid #282a36;border-radius:7px;padding:4px 10px;font-size:.8rem;font-weight:500}.flow-progress-bar-container{background:#20222a;border-radius:999px;width:100%;height:6px;overflow:hidden}.flow-progress-bar-fill{background:linear-gradient(90deg,#e06b3a 0%,#22c55e 100%);border-radius:999px;height:100%;transition:width .3s}.flow-status-message{border-radius:8px;align-items:center;gap:10px;padding:10px 14px;font-size:.82rem;line-height:1.4;display:flex}.flow-msg-on_track{color:#d1fae5;background:#22c55e14;border:1px solid #22c55e33}.flow-msg-ahead{color:#dbeafe;background:#3b82f614;border:1px solid #3b82f633}.flow-msg-behind{color:#fee2e2;background:#ef444414;border:1px solid #ef444433}.flow-msg-expired{color:#fef3c7;background:#f59e0b14;border:1px solid #f59e0b33}.flow-msg-icon{font-size:1rem}.flow-msg-text{flex:1}.flow-quick-readjust-btn{color:#fff;cursor:pointer;white-space:nowrap;background:#ef444433;border:1px solid #ef444466;border-radius:6px;padding:4px 10px;font-size:.76rem;font-weight:600;transition:all .15s}.flow-quick-readjust-btn:hover{background:#ef444459}.flow-active-sprint-banner{background:linear-gradient(135deg,#f59e0b1f 0%,#ea580c14 100%);border:1px solid #f59e0b4d;border-radius:9px;justify-content:space-between;align-items:center;gap:12px;padding:11px 14px;animation:2.5s ease-in-out infinite sprintPulse;display:flex}@keyframes sprintPulse{0%,to{border-color:#f59e0b4d}50%{border-color:#f59e0b8c}}.flow-active-sprint-left{flex-direction:column;flex:1;gap:3px;display:flex}.flow-active-sprint-badge{color:#fbbf24;letter-spacing:.03em;text-transform:uppercase;font-size:.72rem;font-weight:700}.flow-active-sprint-text{color:#fde68a;font-size:.79rem;line-height:1.4}.flow-active-sprint-text strong{color:#f59e0b}.flow-sprint-cancel-btn{color:#fbbf24;cursor:pointer;white-space:nowrap;background:#f59e0b1a;border:1px solid #f59e0b4d;border-radius:6px;flex-shrink:0;padding:5px 11px;font-size:.72rem;font-weight:600;transition:all .15s}.flow-sprint-cancel-btn:hover{background:#f59e0b33;border-color:#f59e0b80}.flow-catchup-modal-backdrop{-webkit-backdrop-filter:blur(8px);z-index:1200;background:#000000c7;justify-content:center;align-items:center;padding:16px;animation:.15s ease-out catchupFadeIn;display:flex;position:fixed;inset:0}@keyframes catchupFadeIn{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.flow-catchup-modal-dialog{background:#121318;border:1px solid #232530;border-radius:14px;flex-direction:column;width:100%;max-width:470px;display:flex;overflow:hidden;box-shadow:0 20px 50px -10px #000c,0 0 0 1px #ffffff0d}.flow-catchup-modal-header{border-bottom:1px solid #1e2029;justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 20px 14px;display:flex}.flow-catchup-modal-header-left{align-items:center;gap:10px;display:flex}.flow-catchup-icon-badge{color:#fbbf24;flex-shrink:0;justify-content:center;align-items:center;display:flex}.flow-catchup-modal-title{font-family:var(--font-heading);color:#f8fafc;margin:0 0 2px;font-size:.95rem;font-weight:700;line-height:1.2}.flow-catchup-modal-subtitle{color:#94a3b8;margin:0;font-size:.77rem;line-height:1.35}.flow-catchup-highlight{color:#f87171;font-weight:600}.flow-catchup-modal-close{color:#64748b;cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:4px;line-height:1;transition:all .12s;display:flex}.flow-catchup-modal-close:hover{color:#f8fafc;background:#ffffff14}.flow-catchup-modal-options{flex-direction:column;gap:10px;padding:16px 20px 20px;display:flex}.flow-catchup-choice-card{cursor:pointer;text-align:left;background:#16171d;border:1px solid #262834;border-radius:9px;align-items:center;gap:12px;width:100%;padding:12px 14px;transition:all .15s;display:flex}.flow-catchup-choice-card:hover{background:#1a1c24;border-color:#3d4154;transform:translateY(-1px)}.flow-catchup-choice-card.sprint:hover{border-color:#f59e0b73}.flow-catchup-choice-card.deadline:hover{border-color:#38bdf873}.flow-catchup-choice-icon{color:#94a3b8;flex-shrink:0;justify-content:center;align-items:center;transition:color .15s;display:flex}.flow-catchup-choice-card.sprint .flow-catchup-choice-icon{color:#fbbf24}.flow-catchup-choice-card.deadline .flow-catchup-choice-icon{color:#38bdf8}.flow-catchup-choice-body{flex-direction:column;flex:1;gap:3px;min-width:0;display:flex}.flow-catchup-choice-header{justify-content:space-between;align-items:center;gap:8px;display:flex}.flow-catchup-choice-title{font-family:var(--font-heading);color:#f1f5f9;font-size:.84rem;font-weight:700}.flow-catchup-tag{white-space:nowrap;border-radius:4px;padding:1px 6px;font-size:.65rem;font-weight:600}.flow-catchup-tag.sprint{color:#fbbf24;background:#f59e0b26}.flow-catchup-tag.deadline{color:#93c5fd;background:#3b82f626}.flow-catchup-choice-sub{color:#94a3b8;margin:0;font-size:.72rem;line-height:1.35}.flow-catchup-choice-arrow{color:#475569;flex-shrink:0;align-items:center;transition:transform .15s,color .15s;display:flex}.flow-catchup-choice-card:hover .flow-catchup-choice-arrow{transform:translate(2px)}.flow-catchup-choice-card.sprint:hover .flow-catchup-choice-arrow{color:#fbbf24}.flow-catchup-choice-card.deadline:hover .flow-catchup-choice-arrow{color:#60a5fa}.flow-status-behind-group{align-items:center;gap:6px;display:flex}.flow-status-readjust-btn{color:#fca5a5;cursor:pointer;background:#ef444426;border:1px solid #ef444459;border-radius:999px;align-items:center;gap:4px;padding:2px 7px;font-size:.7rem;font-weight:600;transition:all .15s;display:inline-flex}.flow-status-readjust-btn:hover{color:#fff;background:#ef444447;border-color:#ef44448c}@media (width<=520px){.flow-catchup-strategy-card{grid-template-columns:auto 1fr}.flow-catchup-strategy-action{grid-column:1/-1;justify-content:flex-end;display:flex}}.flow-week-strip{background:#171820;border:1px solid #262834;border-radius:10px;grid-template-columns:repeat(7,1fr);gap:6px;padding:8px;display:grid}.flow-week-day{cursor:pointer;background:#111216;border:1px solid #232530;border-radius:7px;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;transition:all .15s;display:flex;position:relative}.flow-week-day:hover{background:#1e202a;border-color:#3b3e4f}.flow-week-day.viewing{border-color:var(--color-orange-primary);background:#e06b3a1a}.flow-week-day.today:after{content:"";background:var(--color-orange-primary);border-radius:50%;width:5px;height:5px;position:absolute;top:4px;right:4px}.flow-week-day.rest{opacity:.6}.flow-week-day-name{color:#71717a;font-size:.72rem;font-weight:600}.flow-week-day.viewing .flow-week-day-name{color:var(--color-orange-primary)}.flow-week-day-count{font-family:var(--font-heading);color:#fff;font-size:.88rem;font-weight:700}.flow-week-day-done{color:#22c55e;font-size:.65rem;font-weight:700}.flow-day-header{background:#181920;border:1px solid #242632;border-radius:8px;justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.flow-day-nav-btn{color:#cbd5e1;cursor:pointer;background:#121317;border:1px solid #2b2e3a;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;transition:all .15s;display:flex}.flow-day-nav-btn:hover{color:#fff;background:#252834;border-color:#444758}.flow-day-title-group{align-items:center;gap:10px;display:flex}.flow-day-title{color:#fff;font-size:.95rem;font-weight:600}.flow-badge-today{text-transform:uppercase;color:var(--color-orange-primary);background:#e06b3a26;border:1px solid #e06b3a4d;border-radius:4px;padding:2px 7px;font-size:.68rem;font-weight:700}.flow-badge-past{text-transform:uppercase;color:#94a3b8;background:#262934;border-radius:4px;padding:2px 7px;font-size:.68rem;font-weight:600}.flow-badge-boosted{text-transform:uppercase;color:#fbbf24;letter-spacing:.02em;background:#f59e0b1f;border:1px solid #f59e0b52;border-radius:4px;align-items:center;gap:3px;padding:2px 7px;font-size:.68rem;font-weight:700;display:inline-flex}.flow-week-day.boosted{background:#f59e0b0d;border-color:#f59e0b73}.flow-week-day.boosted:hover{background:#f59e0b17;border-color:#f59e0bb3}.flow-week-day-bolt{color:#fbbf24;margin-left:2px;font-size:.62rem;line-height:1}.flow-goto-today-btn{color:#cbd5e1;cursor:pointer;background:0 0;border:1px solid #333644;border-radius:6px;padding:4px 10px;font-size:.74rem;font-weight:600;transition:all .15s}.flow-goto-today-btn:hover{color:#fff;border-color:var(--color-orange-primary);background:#222530}.flow-day-content{flex-direction:column;gap:18px;min-height:200px;display:flex}.flow-empty-state{text-align:center;background:#16181f;border:1px dashed #2b2e3c;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:40px 20px;display:flex}.flow-empty-icon{font-size:1.8rem}.flow-empty-text{color:#8c93a4;font-size:.86rem}.rest-state{background:#14161d;border-style:solid}.flow-contest-card{background:#a855f71a;border:1px solid #a855f747;border-radius:8px;justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.flow-contest-left{align-items:center;gap:10px;display:flex}.flow-contest-badge{text-transform:uppercase;color:#fff;background:#7e22ce;border-radius:4px;padding:2px 7px;font-size:.68rem;font-weight:700}.flow-contest-name{color:#f3e8ff;font-size:.85rem;font-weight:600}.flow-contest-time{color:#c084fc;font-size:.76rem}.flow-section-header{border-bottom:1px solid #232530;justify-content:space-between;align-items:center;padding-bottom:6px;display:flex}.flow-section-left{align-items:center;gap:8px;display:flex}.flow-section-icon{font-size:.95rem}.flow-section-title{font-family:var(--font-heading);color:#fff;letter-spacing:-.01em;font-size:.92rem;font-weight:700}.flow-section-meta{color:#8c93a4;align-items:center;gap:6px;font-size:.76rem;display:flex}.flow-meta-dot{color:#475569}.flow-meta-solved{color:#22c55e;font-weight:600}.flow-section-sub{color:#94a3b8;font-size:.74rem}.flow-problem-list{flex-direction:column;gap:8px;display:flex}.flow-problem-card{background:#181920;border:1px solid #262834;border-radius:9px;align-items:center;gap:12px;padding:10px 14px;transition:all .15s;display:flex}.flow-problem-card:hover{background:#1e2029;border-color:#3b3e4e}.flow-problem-card.solved{opacity:.65;background:#14151a;border-color:#22232a}.flow-checkbox-wrap{cursor:pointer;align-items:center;display:flex}.flow-check{accent-color:var(--color-orange-primary);cursor:pointer;width:17px;height:17px}.flow-problem-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.flow-problem-title{color:#f1f5f9;text-overflow:ellipsis;white-space:nowrap;align-items:center;gap:6px;font-size:.86rem;font-weight:600;text-decoration:none;transition:color .15s;display:inline-flex;overflow:hidden}.flow-problem-title:hover{color:var(--color-orange-primary)}.flow-problem-card.solved .flow-problem-title{color:#94a3b8;text-decoration:line-through}.flow-problem-meta{color:#71717a;text-overflow:ellipsis;white-space:nowrap;font-size:.72rem;overflow:hidden}.flow-diff-tag{text-transform:uppercase;border-radius:4px;padding:2px 7px;font-size:.7rem;font-weight:700}.flow-time-tag{color:#8c93a4;text-align:right;min-width:44px;font-family:monospace;font-size:.74rem}.flow-ahead-pill{color:#93c5fd;letter-spacing:.04em;text-transform:uppercase;background:#60a5fa24;border:1px solid #60a5fa52;border-radius:4px;flex-shrink:0;padding:2px 7px;font-size:.65rem;font-weight:700}.flow-sidebar-ahead-pill{color:#93c5fd;letter-spacing:.04em;text-transform:uppercase;background:#60a5fa29;border:1px solid #60a5fa52;border-radius:3px;flex-shrink:0;padding:1px 5px;font-size:.58rem;font-weight:700}.revision-card{border-left:3px solid #38bdf8}.flow-title-row{align-items:center;gap:8px;display:flex}.flow-recall-pill{color:#38bdf8;white-space:nowrap;background:#38bdf81f;border:1px solid #38bdf840;border-radius:4px;padding:1px 6px;font-size:.66rem;font-weight:600}.upsolve-card{border-left:3px solid #e06b3a}.flow-add-upsolve-toggle{color:#cbd5e1;cursor:pointer;background:0 0;border:1px solid #363948;border-radius:6px;padding:3px 9px;font-size:.75rem;font-weight:600;transition:all .15s}.flow-add-upsolve-toggle:hover{color:#fff;border-color:var(--color-orange-primary);background:#252834}.flow-upsolve-form{background:#171820;border:1px solid #282a36;border-radius:8px;flex-direction:column;gap:8px;margin-bottom:6px;padding:12px;display:flex}.flow-form-row{gap:8px;display:flex}.flow-text-input{color:#f1f5f9;background:#111216;border:1px solid #2a2c38;border-radius:6px;outline:none;flex:1;padding:7px 10px;font-family:inherit;font-size:.82rem}.flow-text-input:focus{border-color:var(--color-orange-primary)}.flow-select-diff{color:#f1f5f9;cursor:pointer;background:#111216;border:1px solid #2a2c38;border-radius:6px;outline:none;padding:7px 10px;font-size:.82rem}.flow-btn-primary{background:var(--color-orange-primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:7px 16px;font-size:.82rem;font-weight:600;transition:background .15s}.flow-btn-primary:hover{background:var(--color-orange-hover)}.flow-delete-btn{color:#6b7280;cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:1.1rem;line-height:1;transition:color .15s}.flow-delete-btn:hover{color:#ef4444}.flow-upsolve-hint{color:#71717a;margin:0;font-size:.78rem;font-style:italic}.flow-milestone-banner{background:linear-gradient(135deg,#ea580c1f 0%,#f973160d 100%);border:1px solid #f9731647;border-radius:9px;flex-direction:column;gap:6px;padding:14px 16px;display:flex}.flow-milestone-header-top{justify-content:space-between;align-items:center;display:flex}.flow-milestone-badge{text-transform:uppercase;color:#fb923c;letter-spacing:.03em;background:#f9731629;border:1px solid #f9731659;border-radius:4px;padding:2px 8px;font-size:.72rem;font-weight:700}.flow-milestone-tag{color:#94a3b8;font-size:.72rem;font-weight:500}.flow-milestone-title{font-family:var(--font-heading);color:#fff;margin:0;font-size:1.05rem;font-weight:700}.flow-milestone-desc{color:#94a3b8;margin:0;font-size:.78rem;line-height:1.4}.flow-milestone-problem-meta{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.flow-sprint-review-badge{border-radius:4px;padding:1px 6px;font-size:.65rem;font-weight:600}.flow-sprint-review-badge.starred{color:#facc15;background:#eab30826;border:1px solid #eab3084d}.flow-sprint-review-badge.noted{color:#38bdf8;background:#38bdf826;border:1px solid #38bdf84d}.flow-practice-link-btn{color:#94a3b8;background:#1e2029;border:1px solid #2d303c;border-radius:4px;padding:3px 6px;font-size:.85rem;font-weight:700;text-decoration:none;transition:all .15s}.flow-practice-link-btn:hover{color:#fb923c;background:#252834;border-color:#fb923c}.flow-contest-name-col{flex-direction:column;gap:2px;display:flex}.flow-contest-subdesc{color:#94a3b8;font-size:.7rem}.flow-goto-contest-link{color:#a855f7;white-space:nowrap;background:#a855f71f;border:1px solid #a855f747;border-radius:5px;padding:3px 8px;font-size:.72rem;font-weight:600;text-decoration:none;transition:all .15s}.flow-goto-contest-link:hover{color:#fff;background:#a855f740}.flow-upsolve-virtual{color:#fff!important;background:#6366f1!important}.flow-form-optional-row{opacity:.9}.flow-text-input-sub{font-size:.76rem!important}.flow-sidebar-milestone-box{background:linear-gradient(135deg,#f973161f 0%,#12131799 100%);border:1px solid #f9731647;border-radius:8px;flex-direction:column;gap:4px;padding:8px 10px;display:flex}.flow-sidebar-milestone-badge{text-transform:uppercase;color:#fb923c;font-size:.65rem;font-weight:700}.flow-sidebar-milestone-title{color:#fff;font-size:.8rem;font-weight:600}.flow-sidebar-milestone-sub{color:#94a3b8;font-size:.68rem;line-height:1.3}.flow-sidebar-view-review-btn{color:#fb923c;cursor:pointer;text-align:center;background:#f973161f;border:1px solid #f973164d;border-radius:6px;width:100%;padding:5px 10px;font-size:.72rem;font-weight:600;transition:all .15s}.flow-sidebar-view-review-btn:hover{color:#fff;background:#f9731638;border-color:#fb923c}.flow-sidebar-contest-badge.virtual{color:#fff;background:#6366f1}.flow-schedule-actions{border-top:1px solid #232530;flex-wrap:wrap;align-items:center;gap:10px;padding-top:14px;display:flex}.flow-btn-action{color:#e2e8f0;cursor:pointer;background:#1e2029;border:1px solid #2d303e;border-radius:7px;align-items:center;gap:6px;padding:8px 14px;font-size:.8rem;font-weight:600;transition:all .15s;display:flex}.flow-btn-action:hover{color:#fff;background:#272a36;border-color:#45495c}.flow-btn-danger{color:#f87171;background:#ef444414;border-color:#ef444440;margin-left:auto}.flow-btn-danger:hover{color:#fff;background:#ef444433;border-color:#ef4444}.flow-infeasible{text-align:center;flex-direction:column;align-items:center;gap:14px;padding:20px;display:flex}.flow-infeasible-icon{font-size:2.5rem}.flow-infeasible h3{color:#fff;margin:0;font-size:1.35rem;font-weight:700}.flow-infeasible-desc{color:#94a3b8;max-width:520px;margin:0;font-size:.86rem;line-height:1.5}.flow-infeasible-box{text-align:left;background:#171820;border:1px solid #282a36;border-radius:10px;width:100%;max-width:480px;padding:16px 20px}.flow-box-title{color:#f1f5f9;margin-bottom:8px;font-size:.82rem;font-weight:700;display:block}.flow-infeasible-box ul{color:#a0aec0;margin:0;padding-left:20px;font-size:.8rem;line-height:1.6}.flow-infeasible-actions{gap:12px;width:100%;max-width:480px;margin-top:10px;display:flex}.flow-infeasible-actions button{flex:1}.flow-sidebar-badge{letter-spacing:.06em;text-transform:uppercase;color:#cbd5e1;-webkit-user-select:none;user-select:none;background:#ffffff0a;border:1px solid #ffffff14;border-radius:4px;align-items:center;width:fit-content;padding:2px 7px;font-size:.6rem;font-weight:500;line-height:1.2;display:inline-flex}.flow-sidebar-stats{color:#cbd5e1;justify-content:space-between;align-items:center;font-size:.78rem;font-weight:500;display:flex}.flow-sidebar-prog{background:#20222a;border-radius:999px;width:100%;height:5px;margin:2px 0;overflow:hidden}.flow-sidebar-prog-fill{background:var(--color-orange-primary);border-radius:999px;height:100%;transition:width .25s}.flow-sidebar-plan-summary{flex-direction:column;gap:6px;padding-bottom:2px;display:flex}.flow-sidebar-details{color:#8c93a4;justify-content:space-between;align-items:center;font-size:.72rem;display:flex}.flow-sidebar-today-box{background:#111215;border:1px solid #23252d;border-radius:9px;flex-direction:column;gap:8px;padding:10px 11px;display:flex}.flow-sidebar-today-header{justify-content:space-between;align-items:center;display:flex}.flow-sidebar-today-title{text-transform:uppercase;letter-spacing:.06em;color:#94a3b8;font-size:.71rem;font-weight:700}.flow-sidebar-today-counts{color:#cbd5e1;align-items:center;gap:6px;font-size:.72rem;font-weight:600;display:flex}.flow-sidebar-today-badge{color:#94a3b8;background:#1e2028;border:1px solid #2d303d;border-radius:4px;padding:1px 6px;font-size:.68rem}.flow-sidebar-task-list{flex-direction:column;gap:6px;display:flex}.flow-sidebar-task-item{cursor:pointer;-webkit-user-select:none;user-select:none;background:#18191e;border:1px solid #252731;border-radius:6px;align-items:center;gap:8px;padding:7px 9px;transition:background .15s,border-color .15s,transform .1s;display:flex}.flow-sidebar-task-item:hover{background:#20222a;border-color:#3b3f4f;transform:translate(1px)}.flow-sidebar-task-item.is-solved{opacity:.6;background:#131418;border-color:#1f2027}.flow-sidebar-status-icon{color:#0000;border:1.5px solid #3d4150;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:15px;height:15px;font-size:.62rem;transition:all .15s;display:flex}.flow-sidebar-task-item.is-solved .flow-sidebar-status-icon{color:#fff;background:#22c55e;border-color:#22c55e}.flow-sidebar-task-info{flex-direction:column;flex:1;min-width:0;display:flex}.flow-sidebar-task-title{color:#e2e8f0;white-space:nowrap;text-overflow:ellipsis;font-size:.76rem;font-weight:500;text-decoration:none;transition:color .15s;overflow:hidden}.flow-sidebar-task-item:hover .flow-sidebar-task-title{color:var(--color-orange-primary)}.flow-sidebar-task-item.is-solved .flow-sidebar-task-title{color:#8b92a5;text-decoration:line-through}.flow-sidebar-task-meta{align-items:center;gap:5px;margin-top:2px;display:flex}.flow-sidebar-diff-pill{text-transform:capitalize;border-radius:3px;padding:0 4px;font-size:.62rem;font-weight:600}.flow-sidebar-diff-Easy{color:#4ade80;background:#22c55e1f}.flow-sidebar-diff-Medium{color:#fbbf24;background:#f59e0b1f}.flow-sidebar-diff-Hard{color:#f87171;background:#ef44441f}.flow-sidebar-time{color:#717786;font-size:.64rem}.flow-sidebar-contest-item{background:#9333ea14;border:1px solid #9333ea40;border-radius:6px;align-items:center;gap:8px;padding:6px 8px;display:flex}.flow-sidebar-contest-item.is-solved{opacity:.65}.flow-sidebar-contest-badge{text-transform:uppercase;letter-spacing:.03em;border-radius:3px;flex-shrink:0;padding:1px 5px;font-size:.62rem;font-weight:700}.flow-sidebar-contest-badge.biweekly{color:#c084fc;background:#a855f733;border:1px solid #a855f766}.flow-sidebar-contest-badge.weekly{color:#93c5fd;background:#3b82f633;border:1px solid #3b82f666}.flow-sidebar-contest-name{color:#f1f5f9;white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:.74rem;font-weight:600;overflow:hidden}.flow-sidebar-contest-item.is-solved .flow-sidebar-contest-name{color:#94a3b8;text-decoration:line-through}.flow-sidebar-upsolve-box{background:#14151a;border:1px solid #282a35;border-radius:7px;flex-direction:column;gap:6px;margin-top:4px;padding:8px 9px;display:flex}.flow-sidebar-upsolve-header{justify-content:space-between;align-items:center;display:flex}.flow-sidebar-upsolve-title{letter-spacing:.05em;color:#a855f7;text-transform:uppercase;font-size:.68rem;font-weight:700}.flow-sidebar-add-btn{color:#c084fc;cursor:pointer;background:#a855f71f;border:1px solid #a855f747;border-radius:4px;padding:1px 6px;font-size:.65rem;font-weight:600;transition:all .15s}.flow-sidebar-add-btn:hover{background:#a855f738;border-color:#a855f7}.flow-sidebar-upsolve-form{gap:4px;display:flex}.flow-sidebar-upsolve-input{color:#f1f5f9;background:#0f1013;border:1px solid #2d303e;border-radius:4px;outline:none;flex:1;padding:4px 6px;font-size:.68rem}.flow-sidebar-upsolve-input:focus{border-color:#a855f7}.flow-sidebar-upsolve-submit{color:#fff;cursor:pointer;background:#7e22ce;border:none;border-radius:4px;padding:0 8px;font-size:.68rem;font-weight:600}.flow-sidebar-upsolve-submit:hover{background:#9333ea}.flow-sidebar-upsolve-list{flex-direction:column;gap:4px;display:flex}.flow-sidebar-upsolve-hint{color:#64748b;padding:2px 0;font-size:.65rem;font-style:italic}.flow-sidebar-rest-item{color:#94a3b8;background:#141519;border:1px dashed #282a33;border-radius:6px;align-items:center;gap:6px;padding:8px;font-size:.74rem;display:flex}.flow-sidebar-all-done{color:#4ade80;text-align:center;padding:4px 0;font-size:.72rem;font-weight:600}.flow-sidebar-readjust-btn{color:#94a3b8;cursor:pointer;background:#1a1b22;border:1px solid #2d303e;border-radius:6px;justify-content:center;align-items:center;gap:6px;width:100%;margin-top:4px;padding:4px 10px;font-size:.72rem;font-weight:600;transition:all .15s;display:inline-flex}.flow-sidebar-readjust-btn:hover{color:#f8fafc;background:#242632;border-color:#424658}.flow-sidebar-mini-readjust{color:#fca5a5;cursor:pointer;background:#ef444414;border:1px solid #ef444447;border-radius:4px;align-items:center;gap:3px;padding:1px 6px;font-size:.65rem;font-weight:600;line-height:1.2;transition:all .15s;display:inline-flex}.flow-sidebar-mini-readjust:hover{color:#fff;background:#ef44442e;border-color:#ef44448c}.flow-sidebar-boost-tag{color:#fbbf24;letter-spacing:.01em;background:#f59e0b1f;border:1px solid #f59e0b47;border-radius:4px;align-items:center;gap:2px;padding:1px 5px;font-size:.64rem;font-weight:700;display:inline-flex}@keyframes rowHighlightBlink{0%{box-shadow:inset 0 0 0 2px var(--color-orange-primary);background-color:#e06b3a73}30%{background-color:#e06b3a26}60%{box-shadow:inset 0 0 0 2px var(--color-orange-primary);background-color:#e06b3a73}85%{background-color:#e06b3a33}to{box-shadow:none;background-color:#0000}}.problem-row-blink-highlight{animation:2.4s forwards rowHighlightBlink!important}@media (width<=640px){.flow-mode-grid,.flow-two-col-grid,.flow-three-col-grid{grid-template-columns:1fr}.flow-week-strip{grid-template-columns:repeat(7,minmax(36px,1fr));overflow-x:auto}}.flow-today-split{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);align-items:start;gap:16px;display:grid}@media (width<=800px){.flow-today-split{grid-template-columns:1fr}}.flow-task-panel,.flow-progress-panel{background:#181920;border:1px solid #262834;border-radius:10px;flex-direction:column;gap:12px;min-width:0;padding:14px;display:flex;overflow:hidden}.flow-panel-header{border-bottom:1px solid #262834;justify-content:space-between;align-items:center;padding-bottom:8px;display:flex}.flow-panel-label{text-transform:uppercase;letter-spacing:.08em;color:#94a3b8;font-size:.68rem;font-weight:800}.flow-panel-count{color:#71717a;font-size:.72rem;font-weight:500}.flow-contest-task-row{cursor:pointer;background:#7c3aed14;border:1px solid #7c3aed38;border-radius:8px;align-items:center;gap:10px;padding:9px 12px;transition:all .15s;display:flex}.flow-contest-task-row:hover{background:#7c3aed24;border-color:#7c3aed59}.flow-contest-task-row.done{opacity:.55}.flow-contest-task-row.done .flow-contest-task-name{color:#94a3b8;text-decoration:line-through}.flow-contest-task-info{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.flow-contest-type-badge{text-transform:uppercase;letter-spacing:.05em;color:#fff;background:#6d28d9;border-radius:4px;flex-shrink:0;padding:2px 6px;font-size:.62rem;font-weight:800}.flow-contest-task-name{color:#e9d5ff;white-space:nowrap;text-overflow:ellipsis;font-size:.83rem;font-weight:600;overflow:hidden}.flow-task-footer{color:#71717a;border-top:1px solid #262834;padding-top:8px;font-size:.74rem}.flow-progress-rows{flex-direction:column;gap:10px;display:flex}.flow-progress-row{align-items:center;gap:10px;display:flex}.flow-progress-icon{color:#6b7280;flex-shrink:0;align-items:center;display:flex}.flow-progress-key{color:#94a3b8;flex:1;font-size:.8rem}.flow-progress-val{color:#f1f5f9;font-size:.82rem;font-weight:600;font-family:var(--font-heading)}.flow-day-mini-bar{background:#20222a;border-radius:999px;width:calc(100% - 25px);height:5px;margin-top:-4px;margin-left:25px;overflow:hidden}.flow-day-mini-bar-fill{background:linear-gradient(90deg, var(--color-orange-primary) 0%, #22c55e 100%);border-radius:999px;height:100%;transition:width .3s}.flow-upsolve-meta{align-items:center;gap:8px;margin-top:2px;display:flex}.flow-upsolve-badge{text-transform:uppercase;letter-spacing:.03em;border-radius:4px;flex-shrink:0;padding:2px 6px;font-size:.64rem;font-weight:700}.flow-upsolve-weekly{color:#60a5fa;background:#3b82f626;border:1px solid #3b82f64d}.flow-upsolve-biweekly{color:#c084fc;background:#a855f726;border:1px solid #a855f74d}.flow-contest-num-input{max-width:100px;flex:none!important}.flow-upsolve-section,.flow-revision-section{background:#141519;border:1px solid #232530;border-radius:10px;flex-direction:column;gap:12px;padding:14px;display:flex}.flow-infeasible{flex-direction:column;gap:18px;animation:.2s fadeIn;display:flex}.flow-infeasible-header{background:#f59e0b14;border:1px solid #f59e0b40;border-radius:10px;align-items:flex-start;gap:14px;padding:14px 16px;display:flex}.flow-infeasible-icon{background:#f59e0b26;border:1px solid #f59e0b4d;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;margin-top:2px;display:flex}.flow-infeasible-title-wrap{flex-direction:column;gap:4px;display:flex}.flow-infeasible-title{font-family:var(--font-heading);color:#fbbf24;margin:0;font-size:1.12rem;font-weight:700}.flow-infeasible-desc{color:#cbd5e1;margin:0;font-size:.84rem;line-height:1.45}.flow-remedies-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}@media (width<=680px){.flow-remedies-grid{grid-template-columns:1fr}}.flow-remedy-card{background:#181922;border:1px solid #282a3a;border-radius:12px;flex-direction:column;justify-content:space-between;gap:12px;padding:16px;transition:all .15s;display:flex}.flow-remedy-card:hover{background:#1e202c;border-color:#3f445c;transform:translateY(-1px)}.flow-remedy-badge{text-transform:uppercase;letter-spacing:.05em;color:#93c5fd;background:#60a5fa24;border:1px solid #60a5fa4d;border-radius:4px;align-self:flex-start;padding:2px 7px;font-size:.65rem;font-weight:700}.flow-remedy-headline{font-family:var(--font-heading);color:#fff;font-size:1.02rem;font-weight:700}.flow-remedy-text{color:#94a3b8;margin:0;font-size:.8rem;line-height:1.4}.flow-remedy-highlight-box{background:#13141b;border:1px solid #252735;border-radius:8px;justify-content:center;align-items:center;gap:14px;padding:12px 14px;display:flex}.flow-remedy-rate{flex-direction:column;align-items:center;gap:2px;display:flex}.flow-remedy-num{font-family:var(--font-heading);color:#f59e0b;font-size:1.15rem;font-weight:700}.flow-remedy-lbl{text-transform:uppercase;letter-spacing:.05em;color:#71717a;font-size:.68rem;font-weight:600}.flow-remedy-plus{color:#4b5563;font-size:1.1rem;font-weight:600}.flow-remedy-date-wrap{flex-direction:column;align-items:center;gap:2px;display:flex}.flow-remedy-date-val{font-family:var(--font-heading);color:#38bdf8;font-size:1.08rem;font-weight:700}.flow-remedy-date-sub{color:#94a3b8;font-size:.72rem;font-weight:500}.flow-cta-remedy{color:#fff;cursor:pointer;text-align:center;background:linear-gradient(135deg,#e06b3a 0%,#c85020 100%);border:1px solid #f39e55;border-radius:8px;width:100%;padding:10px 14px;font-size:.82rem;font-weight:600;transition:all .15s;box-shadow:0 4px 14px #e06b3a4d}.flow-cta-remedy:hover{background:linear-gradient(135deg,#ea7847 0%,#d85c2c 100%);transform:translateY(-1px);box-shadow:0 6px 18px #e06b3a73}.flow-infeasible-bottom{border-top:1px solid #232532;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:12px;display:flex}.flow-btn-ghost{color:#94a3b8;cursor:pointer;background:0 0;border:1px solid #2e3140;border-radius:6px;align-items:center;gap:6px;padding:8px 12px;font-size:.78rem;font-weight:500;transition:all .15s;display:inline-flex}.flow-btn-ghost:hover{color:#fff;background:#1f212a;border-color:#4b5168}.flow-btn-partial{color:#cbd5e1;cursor:pointer;background:#181920;border:1px solid #2f3242;border-radius:6px;padding:8px 14px;font-size:.78rem;font-weight:500;transition:all .15s}.flow-btn-partial:hover{color:#fff;background:#232530;border-color:#4e536c}.header-timer-pill{color:#e2e8f0;cursor:pointer;-webkit-user-select:none;user-select:none;background:#181920;border:1px solid #282a36;border-radius:9999px;align-items:center;gap:8px;padding:4px 8px 4px 12px;font-size:.82rem;transition:all .15s;display:inline-flex}.header-timer-pill:hover{background:#20222c;border-color:#3b3f52}.header-timer-pill.running{background:#f9731614;border-color:#f9731673;box-shadow:0 0 12px #f9731626}.header-timer-icon-wrap{color:#94a3b8;align-items:center;display:flex;position:relative}.header-timer-pill.running .header-timer-icon-wrap{color:var(--color-orange-primary)}.header-timer-pulse{background:#22c55e;border-radius:50%;width:6px;height:6px;animation:1.8s infinite timerPulse;position:absolute;top:-2px;right:-2px;box-shadow:0 0 6px #22c55e}@keyframes timerPulse{0%{opacity:.8;transform:scale(.95)}50%{opacity:1;transform:scale(1.3)}to{opacity:.8;transform:scale(.95)}}.header-timer-digits{font-family:var(--font-heading);letter-spacing:.02em;color:#f8fafc;font-size:.84rem;font-weight:700}.header-timer-quick-btn{color:#cbd5e1;cursor:pointer;background:#232532;border:1px solid #333646;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;padding:0;transition:all .15s;display:inline-flex}.header-timer-quick-btn:hover{background:var(--color-orange-primary);border-color:var(--color-orange-primary);color:#fff}.header-timer-pill.running .header-timer-quick-btn{border-color:var(--color-orange-primary);color:var(--color-orange-primary);background:#f9731633}.header-timer-pill.running .header-timer-quick-btn:hover{background:var(--color-orange-primary);color:#fff}.sidebar-timer-badge{font-family:var(--font-heading);color:#94a3b8;letter-spacing:.02em;background:#262834;border-radius:4px;padding:2px 7px;font-size:.74rem;font-weight:700;transition:all .15s}.sidebar-timer-badge.active{color:var(--color-orange-primary);background:#f9731633;border:1px solid #f9731659}.sidebar-action-pill.timer-running{background:#f973160d;border-color:#f9731666}.flow-planner-overlay{z-index:99999999!important;box-sizing:border-box!important;pointer-events:auto!important;justify-content:center!important;align-items:center!important;width:100vw!important;height:100vh!important;padding:20px!important;display:flex!important;position:fixed!important;inset:0!important}.flow-planner-backdrop{-webkit-backdrop-filter:blur(14px)!important;z-index:1!important;background:#07080ae0!important;width:100vw!important;height:100vh!important;position:fixed!important;inset:0!important}.flow-planner-card{z-index:2!important;background:#131418!important;border:1px solid #ffffff14!important;border-radius:12px!important;width:100%!important;max-width:440px!important;padding:24px 26px!important;animation:.22s cubic-bezier(.16,1,.3,1) flowPlannerIn!important;position:relative!important;box-shadow:0 20px 50px #000000b3,0 0 1px #ffffff1f!important}@keyframes flowPlannerIn{0%{opacity:0;transform:scale(.96)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.flow-planner-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.flow-planner-pill{background:#ffffff0a;border:1px solid #ffffff14;border-radius:4px;align-items:center;gap:6px;padding:2px 7px;display:inline-flex}.flow-planner-dot{background:#22c55e;border-radius:50%;width:5px;height:5px;box-shadow:0 0 6px #22c55e80}.flow-planner-engine-name{letter-spacing:.08em;color:#94a3b8;text-transform:uppercase;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.58rem;font-weight:600}.flow-planner-pct{color:#cbd5e1;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.74rem;font-weight:600}.flow-planner-title{color:#fff;letter-spacing:-.02em;font-size:1.15rem;font-weight:700;font-family:var(--font-heading);margin:0 0 4px}.flow-planner-subtitle{color:#8892a4;margin:0 0 16px;font-size:.76rem;line-height:1.4}.flow-planner-progress-track{background:#ffffff0f;border-radius:999px;width:100%;height:3px;margin-bottom:18px;overflow:hidden}.flow-planner-progress-bar{background:linear-gradient(90deg,#94a3b8,#e2e8f0);border-radius:999px;height:100%;transition:width .35s cubic-bezier(.4,0,.2,1)}.flow-planner-steps{flex-direction:column;gap:11px;margin-bottom:18px;display:flex}.flow-planner-step{align-items:center;gap:10px;font-size:.8rem;transition:all .2s;display:flex}.flow-planner-step.is-done{color:#94a3b8}.flow-planner-step.is-active{color:#f8fafc;font-weight:500}.flow-planner-step.is-pending{color:#475569}.flow-planner-step-icon{flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;display:flex}.flow-step-svg-check{color:#22c55e;width:14px;height:14px}.flow-step-spinner{border:1.5px solid #ffffff26;border-top-color:#cbd5e1;border-radius:50%;width:12px;height:12px;animation:.65s linear infinite spin}.flow-step-dot{background:#334155;border-radius:50%;width:5px;height:5px}.flow-planner-step-text{line-height:1.3}.flow-planner-footer{border-top:1px solid #ffffff0d;justify-content:space-between;align-items:center;padding-top:12px;display:flex}.flow-planner-status-note{color:#64748b;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.68rem}.btn-feedback{color:#d1d5db;border-radius:var(--radius-md);transition:var(--transition);cursor:pointer;background:#202127;border:1px solid #323541;align-items:center;gap:6px;padding:6px 14px;font-size:.82rem;font-weight:500;display:inline-flex}.btn-feedback:hover{color:#fff;background:#282a32;border-color:#434757}.feedback-modal-card{background:#14151b!important;border:1px solid #2a2c3a!important;max-width:500px!important}.feedback-modal-header{justify-content:space-between;align-items:flex-start;margin-bottom:16px;display:flex}.feedback-modal-title{color:#fff;font-size:1.15rem;font-weight:700;font-family:var(--font-heading);margin-bottom:2px}.feedback-modal-subtitle{color:#8892a4;margin:0;font-size:.78rem;line-height:1.4}.feedback-modal-body{padding-top:0}.feedback-email-card{background:#ffffff08;border:1px solid #ffffff14;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;padding:12px 14px;display:flex}.feedback-email-left{flex-direction:column;gap:2px;min-width:0;display:flex}.feedback-email-label{letter-spacing:.08em;color:#64748b;font-family:ui-monospace,SFMono-Regular,monospace;font-size:.58rem;font-weight:700}.feedback-email-address{color:#f1f5f9;word-break:break-all;font-family:ui-monospace,SFMono-Regular,monospace;font-size:.86rem;font-weight:600;text-decoration:none;transition:color .15s}.feedback-email-address:hover{color:#93c5fd;text-decoration:underline}.feedback-email-actions{flex-shrink:0;align-items:center;gap:6px;display:flex}.feedback-copy-btn,.feedback-mailto-btn{cursor:pointer;white-space:nowrap;border-radius:5px;align-items:center;gap:5px;padding:5px 9px;font-size:.72rem;font-weight:500;transition:all .15s;display:inline-flex}.feedback-copy-btn{color:#e2e8f0;background:#23252d;border:1px solid #363946}.feedback-copy-btn:hover{color:#fff;background:#2e303b;border-color:#4a4d5e}.feedback-mailto-btn{color:#cbd5e1;background:#ffffff0f;border:1px solid #ffffff1a}.feedback-mailto-btn:hover{color:#fff;background:#ffffff1a;border-color:#ffffff2e}.feedback-form{flex-direction:column;gap:14px;display:flex}.feedback-field-group{flex-direction:column;gap:6px;display:flex}.feedback-field-label{color:#cbd5e1;font-size:.75rem;font-weight:600}.feedback-category-pills{flex-wrap:wrap;gap:6px;display:flex}.feedback-category-pill{color:#94a3b8;cursor:pointer;background:#1c1d24;border:1px solid #2e303c;border-radius:4px;padding:4px 11px;font-size:.74rem;font-weight:500;transition:all .15s}.feedback-category-pill:hover{color:#cbd5e1;background:#252732}.feedback-category-pill.active{color:#fff;background:#ffffff14;border-color:#ffffff38;font-weight:600}.feedback-input,.feedback-textarea{box-sizing:border-box;width:100%;font-family:inherit;color:#f1f5f9!important;background:#0f1015!important;border:1px solid #282a36!important;border-radius:6px!important;outline:none!important;padding:8px 12px!important;font-size:.82rem!important;transition:border-color .15s!important}.feedback-input:focus,.feedback-textarea:focus{border-color:#4a4f63!important}.feedback-textarea{resize:vertical;min-height:80px}.feedback-form-footer{justify-content:flex-end;gap:10px;margin-top:4px;display:flex}.feedback-cancel-btn{padding:7px 14px;font-size:.8rem}.feedback-submit-btn{padding:7px 16px;font-size:.8rem}.feedback-success-state{text-align:center;flex-direction:column;align-items:center;padding:24px 12px;display:flex}.feedback-success-icon{color:#22c55e;background:#22c55e1f;border:1px solid #22c55e40;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:12px;display:flex}.feedback-success-heading{color:#fff;margin-bottom:6px;font-size:1.1rem;font-weight:700}.feedback-success-sub{color:#94a3b8;max-width:340px;margin-bottom:18px;font-size:.8rem;line-height:1.45}.sidebar-footer-links{justify-content:center;align-items:center;margin-top:14px;padding:0 4px;display:flex}.sidebar-feedback-link{color:#64748b;cursor:pointer;-webkit-user-select:none;user-select:none;background:0 0;border:1px solid #0000;border-radius:4px;align-items:center;gap:6px;padding:4px 10px;font-size:.72rem;transition:all .15s;display:inline-flex}.sidebar-feedback-link:hover{color:#cbd5e1;background:#ffffff0a;border-color:#ffffff14}.flow-features-container{flex-direction:column;gap:8px;margin-top:6px;margin-bottom:2px;display:flex}.flow-features-list{flex-direction:column;gap:7px;display:flex}.flow-feature-item{background:#ffffff05;border:1px solid #ffffff0d;border-radius:6px;align-items:flex-start;gap:9px;padding:6px 8px;transition:all .15s;display:flex}.flow-feature-item:hover{background:#ffffff09;border-color:#ffffff14}.flow-feature-icon-box{color:#94a3b8;background:#ffffff09;border:1px solid #ffffff12;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;margin-top:1px;display:flex}.flow-feature-body{flex-direction:column;gap:1.5px;min-width:0;display:flex}.flow-feature-title{color:#e2e8f0;letter-spacing:-.01em;font-size:.73rem;font-weight:600;line-height:1.25}.flow-feature-desc{color:#7b8396;font-size:.68rem;line-height:1.35}.flow-modal-header-left{align-items:center;gap:12px;display:flex}.flow-tooltip-container{align-items:center;display:inline-flex;position:relative}.flow-header-features-btn{color:#94a3b8;cursor:pointer;-webkit-user-select:none;user-select:none;background:#ffffff0a;border:1px solid #ffffff14;border-radius:4px;align-items:center;gap:5px;padding:3px 8px;font-size:.68rem;font-weight:500;transition:all .15s;display:inline-flex}.flow-header-features-btn:hover,.flow-header-features-btn.active{color:#fff;background:#ffffff14;border-color:#ffffff2e}.flow-features-popover{z-index:1000;background:#14151b;border:1px solid #ffffff1a;border-radius:8px;width:320px;padding:12px 14px;animation:.15s cubic-bezier(.16,1,.3,1) flowPopoverIn;position:absolute;top:calc(100% + 8px);left:0;box-shadow:0 14px 36px #000000b3,0 0 1px #ffffff26}@keyframes flowPopoverIn{0%{opacity:0;transform:translateY(-4px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.flow-features-popover-header{border-bottom:1px solid #ffffff0f;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:6px;display:flex}.flow-popover-tag{letter-spacing:.08em;color:#64748b;font-family:ui-monospace,SFMono-Regular,monospace;font-size:.58rem;font-weight:700}.flow-popover-close{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:3px;padding:0 4px;font-size:1.1rem;line-height:1}.flow-popover-close:hover{color:#fff;background:#ffffff14}.flow-features-popover-list{flex-direction:column;gap:8px;display:flex}.flow-popover-item{color:#8c93a4;align-items:flex-start;gap:8px;font-size:.72rem;line-height:1.35;display:flex}.flow-popover-item strong{color:#e2e8f0;font-weight:600}.flow-popover-icon{color:#94a3b8;background:#ffffff0a;border:1px solid #ffffff12;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;margin-top:1px;display:flex}.editorial-root{background-color:var(--bg-body,#0d0e11);min-height:100vh;color:var(--text-main,#f3f4f6);font-family:var(--font-main,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);line-height:1.6}.editorial-navbar{z-index:100;-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--border-subtle,#23252a);background:#0d0e11f2;position:sticky;top:0}.editorial-nav-container{justify-content:space-between;align-items:center;gap:16px;max-width:1080px;margin:0 auto;padding:10px 20px;display:flex}.editorial-nav-left{align-items:center;gap:12px;min-width:0;display:flex}.editorial-brand-logo-link{border-radius:var(--radius-sm,6px);align-items:center;padding:1px 2px;text-decoration:none;transition:opacity .2s;display:inline-flex}.editorial-brand-logo-link:hover{opacity:.9}.editorial-flow-logo{object-fit:contain;filter:drop-shadow(0 0 10px #e06b3a4d);width:auto;height:28px;transition:transform .2s,filter .2s;display:block}.editorial-flow-logo:hover{filter:drop-shadow(0 0 16px #e06b3a8c);transform:scale(1.05)}.editorial-back-btn{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);color:var(--text-muted,#9ca3af);border-radius:var(--radius-sm,6px);cursor:pointer;transition:var(--transition,all .15s ease);white-space:nowrap;align-items:center;gap:6px;padding:5px 11px;font-size:.8rem;font-weight:500;display:inline-flex}.editorial-back-btn:hover{background:var(--bg-card-hover,#202024);color:var(--text-main,#f3f4f6);border-color:var(--border-card,#27282e)}.editorial-back-btn.large{padding:8px 16px;font-size:.85rem}.editorial-nav-divider{color:var(--border-subtle,#23252a);font-size:.85rem}.editorial-breadcrumbs{color:var(--text-muted,#9ca3af);text-overflow:ellipsis;white-space:nowrap;align-items:center;gap:6px;font-size:.8rem;display:flex;overflow:hidden}.editorial-bc-step{color:var(--text-subtle,#6b7280)}.editorial-bc-sep{color:var(--text-subtle,#6b7280);flex-shrink:0}.editorial-bc-title{color:var(--text-main,#f3f4f6);text-overflow:ellipsis;white-space:nowrap;font-weight:500;overflow:hidden}.editorial-nav-right{flex-shrink:0;align-items:center;gap:8px;display:flex}.editorial-action-btn{border-radius:var(--radius-sm,6px);cursor:pointer;transition:var(--transition,all .15s ease);background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);color:var(--text-muted,#9ca3af);align-items:center;gap:6px;padding:5px 11px;font-size:.78rem;font-weight:500;text-decoration:none;display:inline-flex}.editorial-action-btn:hover{background:var(--bg-card-hover,#202024);color:var(--text-main,#f3f4f6);border-color:var(--border-card,#27282e)}.editorial-action-btn.solved-toggle.is-solved{background:var(--color-easy-bg,#22c55e1f);border-color:var(--color-easy-border,#22c55e47);color:var(--color-easy,#22c55e)}.editorial-action-btn.external-practice{color:var(--color-orange-primary,#e99347);background:#e993470f;border-color:#e9934740}.editorial-action-btn.external-practice:hover{background:#e993471f;border-color:#e9934766}.feature-announcement-banner{border-bottom:1px solid var(--border-subtle,#23252a);color:var(--text-muted,#9ca3af);z-index:101;background:#141518;justify-content:space-between;align-items:center;gap:16px;padding:8px 20px;font-size:.8rem;display:flex;position:relative}.feature-banner-content{text-align:center;flex-wrap:wrap;flex:1;justify-content:center;align-items:center;gap:10px;display:flex}.feature-banner-text{color:var(--text-main,#d1d5db);font-weight:400}.feature-banner-text strong{color:var(--color-orange-primary,#e99347);font-weight:600}.feature-banner-link{color:var(--color-orange-primary,#e99347);white-space:nowrap;font-weight:500;text-decoration:none;transition:opacity .15s}.feature-banner-link:hover{opacity:.85;text-decoration:underline}.feature-banner-close-btn{color:var(--text-muted,#9ca3af);cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;padding:4px 8px;font-size:.82rem;line-height:1;transition:color .15s,background-color .15s}.feature-banner-close-btn:hover{color:var(--text-main,#fff);background:#ffffff14}.th-solution-header{letter-spacing:.05em;text-transform:uppercase;color:var(--text-subtle,#9ca3af);-webkit-user-select:none;user-select:none;justify-content:center;align-items:baseline;gap:3px;font-size:.74rem;font-weight:600;display:inline-flex}.th-new-text{letter-spacing:normal;color:var(--color-orange-primary,#e99347);opacity:.85;font-size:.6rem;font-weight:500}.editorial-container{max-width:1240px;margin:0 auto;padding:24px 24px 60px}.editorial-layout{justify-content:space-between;align-items:stretch;gap:40px;width:100%;display:flex;position:relative}.editorial-main-content{flex:1;min-width:0;max-width:880px}.editorial-right-idx{z-index:20;flex-shrink:0;align-self:flex-start;width:220px;max-height:calc(100vh - 96px);display:block;position:sticky;top:76px}.right-idx-sticky{scrollbar-width:thin;scrollbar-color:#ffffff1f transparent;max-height:calc(100vh - 96px);padding:4px 0 24px;overflow-y:auto}.right-idx-sticky::-webkit-scrollbar{width:3px}.right-idx-sticky::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:3px}.right-idx-heading{text-transform:uppercase;letter-spacing:.08em;color:var(--text-subtle,#6b7280);margin-bottom:12px;padding-left:12px;font-size:.68rem;font-weight:600}.right-idx-nav{border-left:1px solid var(--border-subtle,#23252a);flex-direction:column;gap:12px;display:flex}.right-idx-group{flex-direction:column;gap:1px;display:flex}.right-idx-subheading{text-transform:uppercase;letter-spacing:.06em;color:var(--text-subtle,#6b7280);opacity:.75;padding:6px 0 2px 12px;font-size:.64rem;font-weight:600;display:block}.right-idx-link{text-align:left;color:var(--text-muted,#8b949e);cursor:pointer;background:0 0;border:none;border-left:2px solid #0000;justify-content:space-between;align-items:center;gap:8px;width:100%;margin-left:-1px;padding:5px 0 5px 12px;font-family:inherit;font-size:.79rem;line-height:1.35;text-decoration:none;transition:color .15s,border-color .15s;display:flex;position:relative}.right-idx-link:hover{color:var(--text-main,#e5e7eb)}.right-idx-link.active{color:var(--text-heading,#fff);border-left-color:var(--color-orange-primary,#e99347);font-weight:500}.right-idx-link.approach-link{padding-left:16px;font-size:.76rem}.right-idx-link-text{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.right-idx-badge-optimal{color:var(--color-orange-primary,#e99347);background:#e9934714;border:1px solid #e9934738;border-radius:3px;flex-shrink:0;padding:1px 4px;font-size:.61rem;font-weight:600;line-height:1.1;display:inline-block}@media (width<=1100px){.editorial-right-idx{display:none}.editorial-layout{gap:0}.editorial-main-content{max-width:100%}}.editorial-header{border-bottom:1px solid var(--border-subtle,#23252a);margin-bottom:24px;padding-bottom:16px}.editorial-header-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.editorial-title-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.editorial-title{font-family:var(--font-heading,inherit);color:var(--text-heading,#fff);letter-spacing:-.015em;margin:0;font-size:1.65rem;font-weight:700}.editorial-controls-row{align-items:center;gap:12px;display:flex}.editorial-meta-text{color:var(--text-muted,#9ca3af);font-size:.8rem}.editorial-toggle-all-btn{border:1px solid var(--border-subtle,#23252a);color:var(--text-muted,#9ca3af);border-radius:var(--radius-sm,6px);cursor:pointer;transition:var(--transition,all .15s ease);background:0 0;align-items:center;gap:5px;padding:4px 9px;font-size:.74rem;display:inline-flex}.editorial-toggle-all-btn:hover{background:var(--bg-card-hover,#202024);color:var(--text-main,#f3f4f6);border-color:var(--border-card,#27282e)}.editorial-collapsible-section{background:var(--bg-card,#171717);border:1px solid var(--border-card,#27282e);border-radius:var(--radius-md,8px);margin-bottom:14px;transition:border-color .15s;overflow:hidden}.editorial-collapsible-section:hover{border-color:#31333b}.editorial-section-header{background:var(--bg-card,#171717);cursor:pointer;text-align:left;-webkit-user-select:none;user-select:none;border:none;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:13px 18px;transition:background .15s;display:flex}.editorial-section-header:hover{background:var(--bg-card-hover,#202024)}.section-header-left{align-items:center;gap:10px;display:flex}.section-chevron{color:var(--text-subtle,#6b7280);justify-content:center;align-items:center;display:flex}.section-title{color:var(--text-heading,#fff);align-items:center;gap:6px;margin:0;font-size:.95rem;font-weight:600;display:flex}.section-sub-title{color:var(--color-orange-primary,#e99347);font-size:.9rem;font-weight:500}.approach-complexity-preview{color:var(--text-muted,#9ca3af);background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:4px;padding:3px 8px;font-size:.76rem}.editorial-section-content{border-top:1px solid var(--border-subtle,#23252a);background:var(--bg-card,#171717);padding:16px 18px 20px}.editorial-lead-text{color:var(--text-main,#f3f4f6);margin-bottom:18px;font-size:.92rem;line-height:1.65}.editorial-concept-content{color:var(--text-main,#f3f4f6);flex-direction:column;gap:12px;font-size:.92rem;line-height:1.68;display:flex}.concept-heading-2{color:#fff;margin-top:14px;margin-bottom:4px;font-size:1.15rem;font-weight:700}.concept-heading-3{color:var(--color-orange-primary,#e99347);margin-top:12px;margin-bottom:2px;font-size:1.02rem;font-weight:600}.concept-heading-4{color:#fb923c;margin-top:10px;margin-bottom:2px;font-size:.92rem;font-weight:600}.concept-paragraph{color:#e5e7eb;margin:0}.concept-bold{color:#fff;font-weight:600}.concept-inline-code{color:#fdba74;background:#ffffff14;border:1px solid #ffffff0f;border-radius:4px;padding:2px 6px;font-family:JetBrains Mono,Fira Code,monospace;font-size:.84em}.concept-math-inline{color:var(--text-main,#f3f4f6);vertical-align:baseline;padding:0 2px;display:inline-block}.concept-math-inline .katex{color:#f3f4f6;font-size:1.05em}.concept-math-block{text-align:center;border:1px solid var(--border-subtle,#23252a);color:#f3f4f6;background:#ffffff05;border-radius:8px;margin:12px 0;padding:14px 20px;overflow-x:auto}.concept-math-block .katex-display{margin:0}.concept-math-block .katex{color:#f3f4f6;font-size:1.15em}.concept-code-wrap{border:1px solid var(--border-subtle,#23252a);background:#0b0c0e;border-radius:6px;margin:6px 0;overflow:hidden}.concept-code-block{color:#abb2bf;white-space:pre;margin:0;padding:14px 18px;font-family:JetBrains Mono,Fira Code,monospace;font-size:.83rem;line-height:1.55;overflow-x:auto}.concept-bullet-list{flex-direction:column;gap:6px;margin:4px 0;padding-left:20px;list-style-type:disc;display:flex}.concept-bullet-list li{color:#e5e7eb}.concept-numbered-list{flex-direction:column;gap:6px;margin:4px 0;padding-left:20px;list-style-type:decimal;display:flex}.concept-numbered-list li{color:#e5e7eb}.concept-divider{border:none;border-top:1px solid var(--border-subtle,#23252a);margin:12px 0}.editorial-examples-group{margin-bottom:18px}.examples-list{flex-direction:column;gap:10px;display:flex}.example-box{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);flex-direction:column;gap:5px;padding:12px 14px;font-size:.83rem;display:flex;overflow-x:auto}.example-row{align-items:flex-start;gap:8px;display:flex}.example-tag{color:var(--text-subtle,#6b7280);flex-shrink:0;min-width:54px;padding-top:1px;font-size:.75rem;font-weight:500;line-height:1.5}.example-code{color:#e5e7eb;white-space:pre-wrap;word-break:break-word;font-family:JetBrains Mono,Fira Code,monospace;font-size:.82rem;line-height:1.5}.example-explanation{color:var(--text-muted,#9ca3af);border-top:1px dashed var(--border-subtle,#23252a);flex-direction:column;gap:4px;margin-top:4px;padding-top:6px;font-size:.8rem;display:flex}.example-explanation-tag{color:var(--text-subtle,#8b92a2);text-transform:uppercase;letter-spacing:.04em;min-width:auto;font-size:.7rem;font-weight:600}.example-explanation-text{color:#cbd5e1;white-space:pre-line;word-break:break-word;font-size:.82rem;line-height:1.55}.constraints-table-wrap{border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);background:var(--bg-body,#0d0e11);overflow-x:auto}.constraints-table{border-collapse:collapse;text-align:left;width:100%;font-size:.81rem}.constraints-table th{color:var(--text-muted,#9ca3af);border-bottom:1px solid var(--border-subtle,#23252a);background:#141416;padding:8px 12px;font-size:.74rem;font-weight:600}.constraints-table td{border-bottom:1px solid #ffffff08;padding:9px 12px}.constraints-table tr:last-child td{border-bottom:none}.constraint-rule{color:var(--color-orange-primary,#e99347);white-space:nowrap}.constraint-impl{color:var(--text-muted,#9ca3af)}.concept-table-wrap{background:#0d0e12;border:1px solid #23252e;border-radius:0;margin:18px 0;overflow-x:auto}.concept-markdown-table{border-collapse:collapse;color:#e5e7eb;width:100%;font-size:.84rem}.concept-markdown-table th{color:#9ca3af;letter-spacing:.03em;background:#14161e;border-bottom:1px solid #23252e;border-right:1px solid #1a1c24;padding:10px 14px;font-size:.76rem;font-weight:600}.concept-markdown-table th:last-child{border-right:none}.concept-markdown-table td{color:#d1d5db;border-bottom:1px solid #1a1c24;border-right:1px solid #1a1c24;padding:10px 14px;line-height:1.5}.concept-markdown-table td:last-child{border-right:none}.concept-markdown-table tr:last-child td{border-bottom:none}.concept-markdown-table tr:hover td{background:#ffffff05}.pattern-block{flex-direction:column;gap:16px;display:flex}.pattern-sub-section{flex-direction:column;gap:6px;display:flex}.pattern-label{text-transform:uppercase;letter-spacing:.04em;color:var(--color-orange-primary,#e99347);margin:0;font-size:.75rem;font-weight:600}.pattern-text{color:var(--text-main,#f3f4f6);font-size:.9rem;line-height:1.6}.skeleton-display-wrap{border-radius:var(--radius-sm,6px);border:1px solid var(--border-subtle,#23252a);background:#0b0c0e;position:relative;overflow:hidden}.pattern-skeleton-code{color:#abb2bf;tab-size:2;background:#0b0c0e;border:none;margin:0;padding:14px 18px;font-family:JetBrains Mono,Fira Code,SF Mono,Consolas,monospace;font-size:.84rem;line-height:1.6;overflow-x:auto}.pattern-skeleton-code code{color:inherit;font-family:inherit}.related-pills-row{flex-wrap:wrap;gap:8px;display:flex}.related-problem-pill{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);color:var(--text-main,#f3f4f6);transition:var(--transition,all .15s ease);align-items:center;gap:6px;padding:4px 9px;font-size:.76rem;text-decoration:none;display:inline-flex}.related-problem-pill:hover{border-color:var(--color-orange-primary,#e99347);color:var(--color-orange-primary,#e99347)}.related-problem-pill .related-tag{color:var(--text-subtle,#6b7280);font-size:.7rem}.diagram-container{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);overflow:hidden}.diagram-top-bar{border-bottom:1px solid var(--border-subtle,#23252a);background:#141416;justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.diagram-title{color:var(--text-muted,#9ca3af);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem;font-weight:600}.diagram-controls{align-items:center;gap:6px;display:flex}.diagram-ctrl-btn{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);width:26px;height:26px;color:var(--text-muted,#9ca3af);cursor:pointer;border-radius:4px;justify-content:center;align-items:center;transition:all .15s;display:inline-flex}.diagram-ctrl-btn:hover:not(:disabled){background:var(--bg-card-hover,#202024);color:var(--text-main,#f3f4f6)}.diagram-ctrl-btn:disabled{opacity:.4;cursor:not-allowed}.diagram-step-indicator{color:var(--text-muted,#9ca3af);font-variant-numeric:tabular-nums;padding:0 4px;font-size:.74rem}.diagram-canvas{flex-direction:column;gap:14px;padding:16px;display:flex}.diagram-sub-label{color:var(--text-subtle,#6b7280);font-size:.75rem;font-weight:500}.diagram-array-row{gap:8px;padding-bottom:12px;display:flex;overflow-x:auto}.diagram-cell-box{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);border-radius:6px;flex-direction:column;justify-content:center;align-items:center;min-width:52px;height:52px;transition:all .2s;display:flex;position:relative}.diagram-cell-box.active{border-color:var(--color-orange-primary,#e99347);background:#e9934714;box-shadow:0 0 10px #e9934726}.diagram-cell-box.matched{border-color:var(--color-easy,#22c55e);background:#22c55e1a}.diagram-cell-box.kadane-window{border-color:var(--color-easy,#22c55e);background:#22c55e14}.diagram-cell-idx{color:var(--text-subtle,#6b7280);font-family:monospace;font-size:.68rem}.diagram-cell-val{color:var(--text-heading,#fff);font-size:.95rem;font-weight:600}.diagram-pointer-arrow{color:var(--color-orange-primary,#e99347);white-space:nowrap;font-size:.68rem;font-weight:600;position:absolute;bottom:-20px}.diagram-inspect-box{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);border-radius:6px;flex-direction:column;gap:5px;padding:10px 14px;font-size:.81rem;display:flex}.inspect-row{align-items:baseline;gap:8px;display:flex}.inspect-label{color:var(--text-subtle,#6b7280);min-width:140px;font-size:.76rem}.inspect-val{color:var(--text-main,#f3f4f6)}.inspect-val.highlight{color:var(--color-easy,#22c55e);font-weight:700}.inspect-status{color:var(--text-muted,#9ca3af)}.inspect-status.success{color:var(--color-easy,#22c55e);font-weight:600}.diagram-map-box{flex-direction:column;gap:6px;display:flex}.diagram-map-items{flex-wrap:wrap;gap:6px;display:flex}.diagram-map-pill{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);border-radius:4px;align-items:center;gap:6px;padding:4px 10px;font-family:monospace;font-size:.76rem;display:inline-flex}.diagram-map-pill.matched{border-color:var(--color-easy,#22c55e);background:#22c55e1a}.map-key{color:var(--color-orange-primary,#e99347)}.map-sep{color:var(--text-subtle,#6b7280)}.map-val{color:var(--text-main,#f3f4f6)}.map-match-tag{background:var(--color-easy,#22c55e);color:#000;border-radius:2px;padding:1px 4px;font-size:.65rem;font-weight:700}.approach-body{flex-direction:column;gap:18px;display:flex}.approach-block{flex-direction:column;gap:6px;display:flex}.approach-sub-heading{text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted,#9ca3af);margin:0;font-size:.75rem;font-weight:600}.approach-text{color:var(--text-main,#f3f4f6);white-space:pre-line;font-size:.9rem;line-height:1.65}.editorial-lead-text{color:var(--text-main,#f3f4f6);white-space:pre-line;margin-bottom:16px;font-size:.92rem;line-height:1.65}.algorithm-steps-list{color:var(--text-main,#f3f4f6);flex-direction:column;gap:6px;padding-left:20px;font-size:.88rem;line-height:1.55;display:flex}.code-viewer-container{border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);background:var(--bg-body,#0d0e11);overflow:hidden}.code-viewer-topbar{border-bottom:1px solid var(--border-subtle,#23252a);background:#141416;justify-content:space-between;align-items:center;padding:6px 12px;display:flex}.lang-tabs-group{gap:2px;display:flex}.lang-tab-btn{color:var(--text-muted,#9ca3af);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 10px;font-size:.76rem;font-weight:500;transition:all .15s}.lang-tab-btn:hover{color:var(--text-main,#f3f4f6);background:#ffffff0a}.lang-tab-btn.active{color:var(--text-heading,#fff);background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);font-weight:600}.copy-code-btn{background:var(--bg-card,#171717);border:1px solid var(--border-subtle,#23252a);color:var(--text-muted,#9ca3af);cursor:pointer;border-radius:4px;align-items:center;gap:5px;padding:3px 9px;font-size:.72rem;transition:all .15s;display:inline-flex}.copy-code-btn:hover{background:var(--bg-card-hover,#202024);color:var(--text-main,#f3f4f6)}.code-display-wrap{background:#0b0c0e;border-radius:0 0 6px 6px;padding:16px 0;display:flex;overflow-x:auto}.code-line-numbers{text-align:right;-webkit-user-select:none;user-select:none;color:#4b5263;border-right:1px solid #ffffff14;flex-direction:column;min-width:48px;padding:0 14px 0 18px;font-family:JetBrains Mono,Fira Code,SF Mono,Consolas,monospace;font-size:.82rem;line-height:1.6;display:flex}.code-line-numbers .line-num{justify-content:flex-end;align-items:center;height:1.6em;display:flex}.code-pre{color:#abb2bf;tab-size:4;flex:1;margin:0;padding:0 20px;font-family:JetBrains Mono,Fira Code,SF Mono,Consolas,monospace;font-size:.83rem;line-height:1.6;overflow-x:auto}.code-pre code{color:inherit;font-family:inherit}.token.comment,.token.block-comment,.token.prolog,.token.doctype,.token.cdata{font-style:italic;color:#636d83!important}.token.punctuation{color:#8fa0b5}.token.tag,.token.attr-name,.token.namespace,.token.deleted{color:#e06c75}.token.function-name,.token.function{color:#61afef;font-weight:500}.token.boolean,.token.number{color:#d19a66}.token.string,.token.char,.token.attr-value,.token.regex{color:#98c379}.token.operator,.token.entity,.token.url{color:#56b6c2}.token.keyword{color:#c678dd;font-weight:600}.token.class-name,.token.builtin,.token.constant{color:#e5c07b}.token.property{color:#e06c75}.token.variable{color:#abb2bf}.complexity-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.complexity-card{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);padding:12px 14px}.complexity-card-header{align-items:center;gap:6px;margin-bottom:6px;display:flex}.complexity-label{color:var(--text-muted,#9ca3af);font-size:.75rem;font-weight:600}.complexity-value{color:var(--color-orange-primary,#e99347);font-size:.8rem;font-weight:700}.complexity-detail{color:var(--text-muted,#9ca3af);margin:0;font-size:.79rem;line-height:1.45}.pitfalls-list,.followups-list{flex-direction:column;gap:10px;display:flex}.pitfall-item{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);padding:12px 14px}.pitfall-title{color:var(--text-heading,#fff);margin-bottom:4px;font-size:.86rem;font-weight:600}.pitfall-text{color:var(--text-muted,#9ca3af);margin:0;font-size:.82rem;line-height:1.5}.followup-item{background:var(--bg-body,#0d0e11);border:1px solid var(--border-subtle,#23252a);border-radius:var(--radius-sm,6px);flex-direction:column;gap:5px;padding:12px 14px;display:flex}.followup-q{color:var(--text-heading,#fff);font-size:.86rem;font-weight:600}.followup-a{color:var(--text-muted,#9ca3af);font-size:.82rem;line-height:1.5}.editorial-bottom-bar{border-top:1px solid var(--border-subtle,#23252a);margin-top:32px;padding-top:16px}@media (width<=768px){.editorial-container{padding:16px 14px 40px}.editorial-title{font-size:1.35rem}.complexity-grid{grid-template-columns:1fr}.editorial-breadcrumbs{display:none}}.concept-minimal-view{flex-direction:column;gap:16px;width:100%;display:flex}.concept-minimal-toolbar{border-bottom:1px solid #23252e;flex-direction:column;gap:14px;padding:4px 0 14px;display:flex}.concept-minimal-toolbar-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.concept-minimal-title-group{align-items:baseline;gap:10px;display:flex}.concept-minimal-title{color:#f3f4f6;letter-spacing:-.01em;margin:0;font-size:1.25rem;font-weight:700}.concept-minimal-count{color:#717786;font-size:.8rem;font-weight:500}.concept-minimal-lang-tabs{border:1px solid #2b2e3a;border-radius:0;display:inline-flex}.concept-lang-tab{color:#8b92a2;cursor:pointer;background:#111216;border:none;border-right:1px solid #2b2e3a;border-radius:0;padding:5px 12px;font-size:.74rem;font-weight:600;transition:background .15s,color .15s}.concept-lang-tab:last-child{border-right:none}.concept-lang-tab:hover{color:#f3f4f6;background:#181a20}.concept-lang-tab.active{color:#e99347;background:#232632}.concept-minimal-filters{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.concept-select-box{flex:1;min-width:220px}.concept-sharp-select{color:#e5e7eb;cursor:pointer;background:#111216;border:1px solid #2b2e3a;border-radius:0;outline:none;width:100%;padding:6px 10px;font-size:.82rem}.concept-sharp-select:focus{border-color:#4a4f62}.concept-diff-tabs{border:1px solid #2b2e3a;border-radius:0;display:inline-flex}.concept-diff-tab{color:#8b92a2;cursor:pointer;background:#111216;border:none;border-right:1px solid #2b2e3a;border-radius:0;padding:6px 12px;font-size:.74rem;font-weight:600;transition:all .15s}.concept-diff-tab:last-child{border-right:none}.concept-diff-tab:hover{color:#f3f4f6;background:#181a20}.concept-diff-tab.active{color:#fff;background:#232632}.concept-diff-tab.diff-easy.active{color:#4ade80}.concept-diff-tab.diff-medium.active{color:#fbbf24}.concept-diff-tab.diff-hard.active{color:#f87171}.concept-sharp-search{align-items:center;min-width:200px;display:flex;position:relative}.concept-sharp-search-input{background:var(--bg-card,#171717);border:1px solid var(--border-card,#27282e);color:#e5e7eb;border-radius:0;outline:none;width:100%;padding:6px 26px 6px 10px;font-size:.82rem}.concept-sharp-search-input:focus{border-color:var(--border-active,#444752)}.concept-sharp-search-clear{color:#717786;cursor:pointer;background:0 0;border:none;font-size:11px;position:absolute;right:8px}.concept-cards-grid{grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px;width:100%;display:grid}@media (width>=1360px){.concept-cards-grid{grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:18px}}@media (width<=640px){.concept-cards-grid{grid-template-columns:1fr;gap:14px}}.concept-card{background:var(--bg-card,#171717);border:1px solid var(--border-card,#27282e);box-sizing:border-box;border-radius:0;flex-direction:column;gap:14px;padding:18px 20px;transition:border-color .16s,background-color .16s;display:flex;position:relative;overflow:hidden}.concept-card:hover{background:#19191a;border-color:#3a3b44}.concept-card-corner{clip-path:polygon(0 0,100% 0,0 100%);pointer-events:auto;z-index:2;cursor:help;width:14px;height:14px;transition:opacity .15s,transform .15s;position:absolute;top:0;left:0}.concept-card-corner.diff-easy{background:#22c55e}.concept-card-corner.diff-medium{background:#f59e0b}.concept-card-corner.diff-hard{background:#ef4444}.concept-card:hover .concept-card-corner{transform-origin:0 0;transform:scale(1.15)}.concept-card-header{border-bottom:1px solid var(--border-subtle,#23252a);justify-content:space-between;align-items:center;gap:12px;padding-bottom:12px;display:flex}.concept-card-title-wrap{align-items:baseline;gap:8px;display:flex}.concept-card-index{color:#646a7a;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.8rem;font-weight:600}.concept-card-title{color:#f3f4f6;margin:0;font-size:1.1rem;font-weight:700;line-height:1.3}.concept-card-header-actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.concept-quick-icon-btn{color:#8b949e;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0;line-height:1;text-decoration:none;transition:transform .15s,opacity .15s,color .15s;display:inline-flex}.concept-quick-icon-btn:hover{color:#f3f4f6;background:0 0;border:none;transform:translateY(-1px)scale(1.1)}.concept-quick-icon-btn.concept-lc-btn:hover,.concept-quick-icon-btn.concept-gfg-btn:hover{transform:translateY(-1px)scale(1.1)}.concept-quick-icon-btn.concept-editorial-icon-btn{color:#e99347}.concept-quick-icon-btn.concept-editorial-icon-btn:hover{color:#f5a864;transform:translateY(-1px)scale(1.1)}.concept-card-body{border-bottom:1px solid var(--border-subtle,#23252a);flex-direction:column;gap:8px;padding-bottom:12px;display:flex}.concept-category-label{text-transform:uppercase;letter-spacing:.06em;color:#e99347;font-size:.72rem;font-weight:700}.concept-intuition-text{color:#e2e8f0;margin:0;font-size:.88rem;line-height:1.58}.concept-trigger-line{color:#cbd5e1;margin:0;font-size:.82rem;line-height:1.48}.concept-trigger-tag{color:#fbbf24;margin-right:6px;font-weight:700}.concept-trigger-val{color:#cbd5e1}.concept-code-panel{border:1px solid var(--border-subtle,#23252a);background:#111113;border-radius:0;overflow:hidden}.concept-code-bar{border-bottom:1px solid var(--border-subtle,#23252a);background:#1a1a1d;justify-content:space-between;align-items:center;padding:5px 10px;display:flex}.concept-code-lang{color:#8b92a2;text-transform:uppercase;letter-spacing:.04em;font-size:.7rem;font-weight:600}.concept-code-copy-btn{color:#a0a6b5;cursor:pointer;background:0 0;border:1px solid #2c2f3b;border-radius:0;padding:2px 8px;font-size:.68rem;font-weight:600;transition:all .15s}.concept-code-copy-btn:hover{color:#f3f4f6;background:#1c1e27;border-color:#4a4f62}.concept-code-pre{color:#e2e8f0;background:0 0;max-height:180px;margin:0;padding:10px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.78rem;line-height:1.5;overflow-y:auto}.concept-code-pre::-webkit-scrollbar{width:4px;height:4px}.concept-code-pre::-webkit-scrollbar-thumb{background:#252834}.syn-comment{color:#64748b;font-style:italic}.syn-string{color:#86efac}.syn-keyword{color:#38bdf8;font-weight:600}.syn-number{color:#f472b6}.concept-card-footer{justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:4px;display:flex}.concept-comp-group{align-items:center;gap:12px;display:flex}.concept-comp-item{color:#7e8596;font-size:.76rem}.concept-comp-item strong{color:#e5e7eb}.concept-editorial-btn{color:#e99347;cursor:pointer;background:0 0;border:none;padding:0;font-size:.76rem;font-weight:600;transition:color .15s}.concept-editorial-btn:hover{color:#f5a864;text-decoration:underline}.concept-sharp-pagination{justify-content:center;align-items:center;gap:8px;padding:28px 0 16px;display:flex}.concept-page-nav-btn{background:var(--bg-card,#171717);border:1px solid var(--border-card,#27282e);color:#d1d5db;cursor:pointer;border-radius:0;padding:6px 14px;font-size:.8rem;font-weight:600;transition:all .15s}.concept-page-nav-btn:hover:not(:disabled){color:#fff;border-color:var(--border-active,#444752);background:#1f2025}.concept-page-nav-btn:disabled{opacity:.35;cursor:not-allowed}.concept-page-indicators{align-items:center;gap:4px;display:flex}.concept-page-num{color:#8b92a2;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:0;justify-content:center;align-items:center;min-width:30px;height:30px;padding:0 6px;font-size:.8rem;font-weight:600;transition:all .15s;display:inline-flex}.concept-page-num:hover{color:#f3f4f6;background:#161820}.concept-page-num.active{color:#e99347;background:#232632;border-color:#3b3f52}.concept-page-ellipsis{color:#555b6a;padding:0 4px;font-size:.8rem}.concept-empty-state{text-align:center;color:#717786;flex-direction:column;align-items:center;gap:12px;padding:40px 0;display:flex}