:root{--font-system:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;--app-font-family:var(--font-system);--app-font-scale:1;font-family:var(--app-font-family);color:#25252d;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#fff9fb}@font-face{font-family:FinalCongee Lakeus Night Writing;src:url(/fonts/851-lakeus-night-writing-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Maple Mono NF CN;src:url(/fonts/maple-mono-nf-cn-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Honglei Banshu;src:url(/fonts/honglei-banshu-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Liyu Xingkai;src:url(/fonts/liyu-xingkai.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Nanxi Ink Song;src:url(/fonts/nanxi-ink-song.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee LXGW WenKai;src:url(/fonts/lxgw-wenkai-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee XuanZongTi;src:url(/fonts/xuanzongti.otf)format("opentype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Slidexiaxing;src:url(/fonts/slidexiaxing-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}@font-face{font-family:FinalCongee Slideyouran;src:url(/fonts/slideyouran-regular.ttf)format("truetype");font-display:swap;font-style:normal;font-weight:100 900}:root[data-app-font=system]{--app-font-family:var(--font-system)}:root[data-app-font=lakeus-night-writing]{--app-font-family:"FinalCongee Lakeus Night Writing", var(--font-system)}:root[data-app-font=maple-mono-nf-cn]{--app-font-family:"FinalCongee Maple Mono NF CN", ui-monospace, var(--font-system)}:root[data-app-font=honglei-banshu]{--app-font-family:"FinalCongee Honglei Banshu", var(--font-system)}:root[data-app-font=liyu-xingkai]{--app-font-family:"FinalCongee Liyu Xingkai", var(--font-system)}:root[data-app-font=nanxi-ink-song]{--app-font-family:"FinalCongee Nanxi Ink Song", var(--font-system)}:root[data-app-font=lxgw-wenkai]{--app-font-family:"FinalCongee LXGW WenKai", var(--font-system)}:root[data-app-font=xuanzongti]{--app-font-family:"FinalCongee XuanZongTi", var(--font-system)}:root[data-app-font=slidexiaxing]{--app-font-family:"FinalCongee Slidexiaxing", var(--font-system)}:root[data-app-font=slideyouran]{--app-font-family:"FinalCongee Slideyouran", var(--font-system)}*{box-sizing:border-box}html,body,#root{min-width:320px;height:100%;min-height:100%;margin:0;overflow:hidden}body{min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}@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,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.1"}.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 .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}.option-wheel{--ow-text-color:var(--text-soft);--ow-active-color:var(--primary);--ow-font-size:1.5rem;--ow-inset:24px;cursor:grab;-webkit-user-select:none;user-select:none;touch-action:none;outline:none;width:100%;height:100%;position:relative;overflow:hidden}.option-wheel:focus-visible{box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--primary) 35%, transparent)}.option-wheel--dragging{cursor:grabbing}.option-wheel__item{top:50%;left:var(--ow-inset);white-space:nowrap;font-size:var(--ow-font-size);transform-origin:0;cursor:pointer;will-change:transform, opacity, filter;letter-spacing:.01em;color:color-mix(in srgb, var(--ow-active-color) calc(var(--ow-p,0) * 100%), var(--ow-text-color));font-weight:600;line-height:1;position:absolute}.option-wheel--right .option-wheel__item{left:auto;right:var(--ow-inset);transform-origin:100%}.option-wheel__item--selected{font-weight:850}.option-wheel__item-tag{letter-spacing:.02em;vertical-align:middle;white-space:nowrap;background:color-mix(in srgb, var(--primary) 14%, transparent);color:var(--primary);border:1px solid #0000;border-color:color-mix(in srgb, var(--primary) 30%, transparent);border-radius:999px;margin-left:9px;padding:1px 7px;font-size:.62em;font-weight:800;display:inline-block}.option-wheel__item-tag[data-tone=history]{background:color-mix(in srgb, var(--text-soft) 12%, transparent);color:var(--text-muted);border-color:color-mix(in srgb, var(--line-strong) 70%, transparent)}@media (prefers-reduced-motion:reduce){.option-wheel{cursor:default}}:root{--bg:#fffafb;--surface:#ffffffd1;--surface-muted:#fff7f9b8;--surface-strong:#fff0f4d6;--text:#2b2730;--text-muted:#8c7c85;--text-soft:#b6a3ad;--line:#ebc9d5c7;--line-strong:#f5b8c9e6;--primary:#ff4d78;--primary-strong:#eb2e61;--primary-soft:#fff0f4e0;--agent-accent:#ff4d78;--agent-soft:#ff4d7821;--peach:#ff8d64;--mint:#36b783;--violet:#9671e5;--icon-fill:linear-gradient(135deg, #ff5b84, #ff9fb7);--icon-fill-soft:linear-gradient(135deg, #fff5f8, #ffd6e2);--icon-fill-secondary:linear-gradient(135deg, #ff8eaa, #ffd1dc);--icon-fill-tertiary:linear-gradient(135deg, #ffc2d2, #fff0f5);--icon-ink:#fff;--icon-ink-soft:#e73766;--icon-accent:#ff6f96;--icon-rank-1:#ff4d78;--icon-rank-2:#ff7fa0;--icon-rank-3:#f3a4b8;--icon-glow:#ff4d7838;--shadow:0 15px 40px #83334d12;--shadow-subtle:0 6px 18px #83334d0d;--panel-filter:saturate(1.12) brightness(1.02);--workspace-background:url(/background-light.png);--workspace-wash:linear-gradient(180deg, #ffffff2e, #ffeff51f), linear-gradient(90deg, #ffe2ea33, #ffffff05 43%, #ffdae638)}:root[data-theme=dark]{--bg:#0e1731;--surface:#0f1e3edb;--surface-muted:#17284ecc;--surface-strong:#1d305be6;--text:#f4f8ff;--text-muted:#aebddd;--text-soft:#7183aa;--line:#3f5991ad;--line-strong:#5777b8c7;--primary:#5e90ff;--primary-strong:#7ca7ff;--primary-soft:#1c3667e0;--agent-accent:#28c8ff;--agent-soft:#28c8ff29;--peach:#ff9f77;--mint:#55c59a;--violet:#8a9dfd;--icon-fill:linear-gradient(135deg, #3f79ff, #22d8ff);--icon-fill-soft:linear-gradient(135deg, #1c3667f5, #1668aab8);--icon-fill-secondary:linear-gradient(135deg, #2f65d8, #17bde8);--icon-fill-tertiary:linear-gradient(135deg, #1a3b78, #2b71c8);--icon-ink:#f4f8ff;--icon-ink-soft:#93c7ff;--icon-accent:#66a4ff;--icon-rank-1:#5e90ff;--icon-rank-2:#28c8ff;--icon-rank-3:#7c8dff;--icon-glow:#3a93ff47;--shadow:0 18px 44px #0003;--shadow-subtle:0 8px 20px #00000029;--panel-filter:blur(16px) saturate(1.08);--workspace-background:url(/background-dark.png);--workspace-wash:linear-gradient(110deg, #081431ad, #0a1a3a61)}::selection{color:inherit;text-shadow:none;background:#ff6e9b73}::selection{color:inherit;text-shadow:none;background:#ff6e9b73}:root[data-theme=dark] ::selection{color:inherit;text-shadow:none;background:#6096ff80}:root[data-theme=dark] ::selection{color:inherit;text-shadow:none;background:#6096ff80}.app-shell{isolation:isolate;--nav-width:92px;--ai-panel-width:340px;grid-template-columns:var(--nav-width) minmax(560px, 1fr) var(--ai-panel-width);height:100dvh;min-height:0;color:var(--text);background-color:var(--bg);background-image:var(--workspace-wash), var(--workspace-background);zoom:var(--app-font-scale);background-position:50%;background-size:cover;background-attachment:fixed;transition:grid-template-columns .22s,background-color .18s,color .18s;display:grid;position:relative;overflow:hidden}.app-shell.is-ai-resizing{cursor:col-resize;transition:background-color .18s,color .18s}.app-shell.is-ai-resizing *{-webkit-user-select:none;user-select:none}.app-shell.is-ai-collapsed{grid-template-columns:var(--nav-width) minmax(560px, 1fr) 72px}.app-shell.is-material-preview-open{grid-template-columns:var(--nav-width) minmax(560px, 1fr) 0}.app-shell.is-material-preview-open .ai-panel{visibility:hidden;pointer-events:none;opacity:0;border-left:0;width:0;min-width:0;padding-inline:0}.boot-shell{grid-template-columns:minmax(0,1fr);display:grid}.app-shell:before,.app-shell:after{z-index:0;content:"";pointer-events:none;filter:blur(2px);border-radius:999px;position:fixed}.app-shell:before{filter:none;background:linear-gradient(90deg,#ffffff08,#0000 46%,#ffffff05);border-radius:0;inset:0}.app-shell:after{filter:blur(12px);background:radial-gradient(#ff869f3d,#0000 70%);width:240px;height:120px;display:none;bottom:46px;right:22%}:root[data-theme=dark] .app-shell:before{background:linear-gradient(90deg,#ffffff14,#0000 46%,#ffffff0f)}:root[data-theme=dark] .app-shell:after{background:radial-gradient(#ffffff4d,#0000 70%);display:block}button,input,select,textarea{color:inherit;border:0}button{background:0 0}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline-offset:2px;outline:3px solid #ff4d783d}.main-navigation,.course-panel,.main-area,.ai-panel{z-index:1;position:relative}.main-navigation{overscroll-behavior:contain;border-right:1px solid var(--line);height:100dvh;min-height:0;-webkit-backdrop-filter:var(--panel-filter);backdrop-filter:var(--panel-filter);background:#ffffff57;flex-direction:column;padding:11px 9px 10px;display:flex;overflow:hidden}:root[data-theme=dark] .main-navigation{background:#081127b8}.brand-button{text-align:left;justify-content:center;align-items:center;gap:9px;margin-bottom:18px;padding:3px;display:flex}.brand-mark{background-image:url(/brand-icon-light.png);background-position:50%;background-size:cover;border-radius:14px;flex:none;width:46px;height:46px;display:block;box-shadow:0 7px 14px #ff4d7833}:root[data-theme=dark] .brand-mark{background-image:url(/brand-icon-dark.png);box-shadow:0 7px 18px #2885ff47}.brand-name{letter-spacing:0;white-space:nowrap;font-size:13px;font-weight:800;line-height:1.1;display:none}.nav-section{flex-direction:column;gap:3px;display:flex}.nav-item{width:100%;min-height:46px;color:var(--text-muted);border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:11px;font-weight:700;transition:color .15s,background-color .15s,transform .15s;display:flex}.nav-item:hover,.nav-item.is-active{color:var(--primary);background:var(--primary-soft)}.nav-bottom{gap:3px;margin-top:5px;display:grid}.course-panel{z-index:16;border-right:1px solid var(--line);width:300px;height:100dvh;min-height:0;-webkit-backdrop-filter:var(--panel-filter);backdrop-filter:var(--panel-filter);box-shadow:var(--shadow);background:#ffffff75;flex-direction:column;padding:26px 17px 18px;transition:transform .22s;display:flex;position:fixed;top:0;left:0;transform:translate(-105%)}.course-panel.is-open{transform:translateX(var(--nav-width))}:root[data-theme=dark] .course-panel{background:#0f1b3acc}.course-panel-header,.ai-panel-header,.panel-heading,.page-heading-row,.topbar,.task-title-line,.task-actions,.task-progress,.choice,.mock-workbench header,.note-editor header,.note-editor footer,.material-row,.error-row,.error-title-line,.proposal-heading,.course-card-footer{align-items:center;display:flex}.course-panel-header{justify-content:space-between;gap:8px;margin-bottom:18px}.eyebrow,.page-kicker,.question-label,.question-source,.mock-chip,.course-panel-header small{color:var(--text-muted);font-size:12px;font-weight:700}.course-panel-header h2,.ai-panel-header h2,.panel-heading h2,.page-heading-row h1,.overview-head h1,.question-panel h2,.mock-start-card h2,.mock-workbench h2{color:var(--text);letter-spacing:0;margin:0}.course-panel-header h2{margin-top:3px;font-size:18px}.course-panel-header h2 small{font-size:13px}.add-course-button,.icon-button{width:35px;height:35px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface);border-radius:9px;flex:none;place-items:center;transition:border-color .15s,color .15s,transform .15s;display:inline-grid}.add-course-button{color:var(--primary);border-color:var(--line-strong)}.icon-button:hover,.add-course-button:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}.close-course-panel{display:inline-grid}.course-list{overscroll-behavior:contain;flex:1;gap:8px;min-height:0;padding-right:2px;display:grid;overflow:hidden auto}.course-card{text-align:left;border:1px solid #0000;border-radius:10px;grid-template-columns:minmax(0,1fr) 32px;align-items:center;gap:7px;width:100%;min-width:0;padding:7px;transition:background-color .16s,border-color .16s,transform .16s;display:grid}.course-card:hover{background:var(--surface-muted);transform:translateY(-1px)}.course-card.is-selected{border-color:var(--primary);background:linear-gradient(110deg, var(--primary-soft), transparent);box-shadow:0 6px 18px var(--icon-glow)}.course-card-select{text-align:left;align-items:center;gap:10px;min-width:0;display:flex}.course-delete-button{width:30px;height:30px;color:var(--text-soft);border:1px solid #0000;border-radius:7px;place-items:center;display:grid}.course-delete-button:hover{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.course-card-icon{width:37px;height:37px;color:var(--icon-ink);background:var(--icon-fill);box-shadow:inset 0 1px #ffffff4d, 0 7px 16px var(--icon-glow);border-radius:9px;flex:none;place-items:center;display:inline-grid}.course-letter{font-size:16px;font-weight:800}.course-card-content{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.course-card-title{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:800;overflow:hidden}.course-card-meta,.course-card-footer{min-width:0;color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.course-card-meta i{background:var(--text-soft);border-radius:999px;width:3px;height:3px;margin:0 5px 2px;display:inline-block}.course-progress{background:var(--line);border-radius:999px;width:100%;height:4px;display:block;overflow:hidden}.course-progress span{border-radius:inherit;background:var(--icon-fill);height:100%;display:block}.course-card-footer{justify-content:space-between}.course-card-footer b{color:var(--text-muted);font-size:11px}.course-wheel-area{flex:auto;width:100%;min-height:240px;padding:14px 0;position:relative}.course-empty{text-align:center;flex-direction:column;flex:auto;justify-content:center;align-items:center;gap:14px;padding:30px 18px;display:flex}.course-empty-text{color:var(--text-muted);font-size:13px;line-height:1.6}.course-focus-card{border:1px solid var(--primary);background:linear-gradient(110deg, var(--primary-soft), transparent);box-shadow:0 8px 22px var(--icon-glow);border-radius:12px;flex-direction:column;flex:none;gap:14px;margin-top:6px;padding:12px;display:flex}.course-focus-head{align-items:center;gap:11px;min-width:0;display:flex}.course-focus-actions{align-items:center;gap:8px;display:flex}.course-focus-actions .primary-button{flex:auto;justify-content:center;padding:9px 12px;font-size:13px}.course-focus-delete{width:36px;height:36px;color:var(--text-soft);border:1px solid var(--line-strong);background:var(--surface);border-radius:9px;flex:none;place-items:center;transition:color .15s,border-color .15s,background .15s;display:grid}.course-focus-delete:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft)}.course-status-pill{letter-spacing:.02em;white-space:nowrap;border:1px solid #0000;border-radius:999px;flex:none;align-items:center;gap:5px;padding:1px 8px;font-size:10px;font-weight:800;line-height:1.5;display:inline-flex}.course-status-pill:before{content:"";background:currentColor;border-radius:999px;width:5px;height:5px}.course-status-pill[data-status=active]{color:var(--primary);background:color-mix(in srgb, var(--primary) 14%, transparent);border-color:color-mix(in srgb, var(--primary) 32%, transparent)}.course-status-pill[data-status=history]{color:var(--text-muted);background:color-mix(in srgb, var(--text-soft) 12%, transparent);border-color:color-mix(in srgb, var(--line-strong) 70%, transparent)}.course-category-summary{letter-spacing:.02em;color:var(--text-muted);align-items:center;gap:9px;padding:2px 4px 6px;font-size:11px;font-weight:800;display:flex}.course-category-summary i{background:var(--line-strong);border-radius:999px;flex:none;width:3px;height:3px}.course-category-summary [data-status=active]{color:var(--primary)}.course-category-summary [data-status=history]{color:var(--text-muted)}.course-category-tabs{gap:4px;padding:2px 4px 8px;display:flex}.course-category-tab{border:1px solid var(--line-strong);background:var(--surface);color:var(--text-muted);letter-spacing:.02em;cursor:pointer;border-radius:999px;flex:1 1 0;justify-content:center;align-items:center;gap:6px;padding:6px 10px;font-size:11px;font-weight:800;line-height:1.4;transition:color .15s,border-color .15s,background .15s;display:inline-flex}.course-category-tab small{opacity:.75;font-size:10px;font-weight:700}.course-category-tab:hover:not(:disabled):not(.is-active){border-color:var(--primary);color:var(--text-strong)}.course-category-tab.is-active{color:var(--primary);border-color:color-mix(in srgb, var(--primary) 45%, transparent);background:color-mix(in srgb, var(--primary) 12%, transparent)}.course-category-tab.is-active small{opacity:.9}.course-category-tab.is-active[data-status=history]{color:var(--text-strong);border-color:var(--line-strong);background:color-mix(in srgb, var(--text-soft) 10%, transparent)}.course-category-tab:disabled{opacity:.4;cursor:not-allowed}.course-switcher-focus-title-row,.course-card-title-row{align-items:center;gap:8px;min-width:0;display:flex}.course-switcher-focus-title-row strong,.course-card-title-row .course-card-title{flex:auto;min-width:0}.main-area{overscroll-behavior:contain;-ms-overflow-style:none;scrollbar-width:none;min-width:0;height:100dvh;min-height:0;overflow:clip auto}.main-area::-webkit-scrollbar{width:0;height:0}.boot-shell .main-area{place-items:center;min-height:100vh;display:grid;overflow:auto}.topbar{z-index:10;border-bottom:1px solid var(--line);background:var(--bg);min-height:78px;-webkit-backdrop-filter:var(--panel-filter);backdrop-filter:var(--panel-filter);justify-content:space-between;gap:20px;padding:0 31px;position:sticky;top:0;box-shadow:0 10px 26px #83334d14}:root[data-theme=dark] .topbar{background:var(--bg);box-shadow:0 10px 26px #0000003d}.topbar-context,.crumbs,.topbar-status,.topbar-actions,.mobile-brand{align-items:center;display:flex}.topbar-context{flex-direction:column;align-items:flex-start;gap:5px;min-width:0}.crumbs{color:var(--text-muted);gap:8px;font-size:12px;font-weight:700}.topbar-status{max-width:min(420px,42vw);color:var(--text-soft);gap:5px;font-size:10px;font-weight:700;line-height:1.25}.topbar-status svg{flex:none}.topbar-status svg:first-child{color:var(--icon-accent)}.topbar-status span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.section-dot{background:var(--icon-accent);width:8px;height:8px;box-shadow:0 0 0 4px var(--icon-glow);border-radius:999px}.crumb-divider{color:var(--text-soft)}.topbar-actions{flex:0 auto;gap:8px;min-width:0}.course-switcher{flex:0 190px;min-width:0;position:relative;transform:translate(-20px)}.course-switcher-trigger{width:100%;min-width:0;height:35px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface);text-align:left;border-radius:8px;align-items:center;gap:8px;padding:0 10px;font-size:12px;font-weight:800;transition:border-color .15s,color .15s,background-color .15s;display:flex}.course-switcher-trigger:hover,.course-switcher.is-open .course-switcher-trigger{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.course-switcher-trigger>svg{flex:none}.course-switcher-trigger strong{min-width:0;color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.course-switcher-label{flex:none}.course-switcher-menu{z-index:30;border:1px solid var(--line);width:320px;box-shadow:var(--shadow);background:#fff9fb;border-radius:9px;padding:8px;position:absolute;top:calc(100% + 9px);right:0}:root[data-theme=dark] .course-switcher-menu{background:#0e1731}.course-switcher-list{gap:6px;max-height:300px;display:grid;overflow:auto}.course-switcher-row{grid-template-columns:minmax(0,1fr) 32px;align-items:center;gap:5px;display:grid}.course-switcher-option{text-align:left;border:1px solid #0000;border-radius:8px;grid-template-columns:9px minmax(0,1fr) 16px;align-items:center;gap:9px;min-width:0;min-height:50px;padding:8px;transition:border-color .15s,background-color .15s;display:grid}.course-switcher-option:hover,.course-switcher-row.is-selected .course-switcher-option{border-color:var(--line-strong);background:var(--primary-soft)}.course-switcher-dot{background:var(--primary);width:9px;height:9px;box-shadow:0 0 0 4px var(--icon-glow);border-radius:999px}:root[data-theme=dark] .course-switcher-dot{background:var(--primary)!important}.course-switcher-copy{gap:3px;min-width:0;display:grid}.course-switcher-copy strong,.course-switcher-copy small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.course-switcher-copy strong{color:var(--text);font-size:13px;font-weight:850}.course-switcher-copy small{color:var(--text-muted);font-size:10px;font-weight:700}.course-switcher-option>svg{color:var(--primary)}.course-switcher-delete{width:30px;height:30px;color:var(--text-soft);border:1px solid #0000;border-radius:7px;place-items:center;display:grid}.course-switcher-delete:hover{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.course-switcher-add{width:100%;min-height:38px;color:var(--primary);border:1px dashed var(--line-strong);background:#fff1f5;border-radius:8px;justify-content:center;align-items:center;gap:6px;margin-top:8px;font-size:12px;font-weight:850;display:flex}.course-switcher-add:hover{background:var(--primary-soft)}:root[data-theme=dark] .course-switcher-add{background:#17284e}.course-switcher-wheel-area{background:linear-gradient(180deg, color-mix(in srgb, var(--primary-soft) 70%, transparent), transparent 18%, transparent 82%, color-mix(in srgb, var(--primary-soft) 70%, transparent));border-radius:8px;height:212px;margin:2px 0 10px;position:relative;overflow:hidden}.course-switcher-wheel .option-wheel__item{transform-origin:50%;left:50%;right:auto;translate:-50%}.course-switcher-focus{border:1px solid var(--primary);background:linear-gradient(110deg, var(--primary-soft), transparent);box-shadow:0 6px 18px var(--icon-glow);border-radius:9px;gap:9px;padding:10px 11px;display:grid}.course-switcher-focus-meta{gap:3px;min-width:0;display:grid}.course-switcher-focus-meta strong{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:850;overflow:hidden}.course-switcher-focus-meta small{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:10px;font-weight:700;overflow:hidden}.course-switcher-focus-actions{align-items:center;gap:8px;display:flex}.course-switcher-confirm{flex:auto;justify-content:center;min-height:36px;padding:0 12px;font-size:12px}.course-switcher-confirm>svg{flex:none}.course-switcher-empty{height:120px;color:var(--text-muted);text-align:center;place-items:center;padding:0 14px;font-size:12px;display:grid}.search-button{min-width:213px;height:35px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface);text-align:left;border-radius:8px;align-items:center;gap:8px;padding:0 8px 0 10px;font-size:12px;display:flex}.search-button kbd{color:var(--text-soft);border:1px solid var(--line);border-radius:4px;margin-left:auto;padding:2px 5px;font-size:10px}.mobile-brand,.mobile-only{display:none}.module-page{width:min(100%,1160px);margin:0 auto;padding:31px 31px 70px}.empty-module{text-align:center;border:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffb8;border-radius:8px;justify-items:center;gap:14px;width:min(520px,100% - 32px);min-height:auto;padding:36px 30px;display:grid;box-shadow:0 24px 70px #4f30431c}:root[data-theme=dark] .empty-module{background:#0c162cc7;box-shadow:0 24px 70px #00000042}.empty-module>svg{width:44px;height:44px;color:var(--icon-ink);background:var(--icon-fill);box-shadow:0 12px 26px var(--icon-glow);border-radius:8px;padding:10px}.empty-module h1{max-width:100%;color:var(--text);margin:2px 0 0;font-size:clamp(24px,3vw,34px);font-weight:850;line-height:1.18}.empty-module p{max-width:360px;color:var(--text-muted);margin:0;font-size:13px;line-height:1.7}.empty-module .primary-button{margin-top:8px}.boot-progress{background:#ff4d7821;border-radius:999px;width:min(240px,70%);height:4px;margin-top:6px;overflow:hidden}.boot-progress span{border-radius:inherit;background:var(--icon-fill);width:42%;height:100%;animation:1.35s ease-in-out infinite boot-progress-slide;display:block}@keyframes boot-progress-slide{0%{transform:translate(-110%)}to{transform:translate(260%)}}.overview-head,.page-heading-row{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:23px;display:flex}.overview-head{align-items:end}.page-kicker{color:var(--primary);align-items:center;gap:6px;margin:0 0 8px;display:flex}.overview-head h1,.page-heading-row h1{max-width:670px;font-size:clamp(25px,2.3vw,33px);font-weight:850;line-height:1.17}.overview-intro,.page-heading-row>div>p{max-width:660px;color:var(--text-muted);margin:10px 0 0;font-size:13px;line-height:1.7}.overview-intro strong{color:var(--text)}.primary-button,.secondary-button,.soft-action{border-radius:8px;justify-content:center;align-items:center;gap:6px;min-height:36px;padding:0 13px;font-size:12px;font-weight:800;transition:transform .15s,box-shadow .15s,background-color .15s;display:inline-flex}.primary-button{isolation:isolate;--sb-line:color-mix(in srgb, var(--primary) 60%, #fff);color:#fff;background:linear-gradient(135deg, var(--primary), var(--primary-strong));box-shadow:0 7px 16px var(--icon-glow);position:relative}.primary-button:before{content:"";border-radius:inherit;background:radial-gradient(130px circle at var(--sb-mx,50%) var(--sb-my,50%), var(--sb-line), transparent 55%);-webkit-mask-composite:xor;opacity:0;pointer-events:none;z-index:-1;padding:1.5px;transition:opacity .24s;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:auto,auto;mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.primary-button:after{content:"";border-radius:inherit;background:linear-gradient(115deg, transparent 30%, var(--sb-line) 50%, transparent 70%);-webkit-mask-composite:xor;opacity:0;pointer-events:none;z-index:-1;background-size:250% 100%;padding:1.5px;animation:3.6s ease-in-out infinite sb-sweep;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:auto,auto;mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.primary-button:hover{box-shadow:0 10px 20px #ff4d7840, 0 0 0 1px var(--sb-line), 0 0 22px -2px var(--icon-glow);transform:translateY(-1px)}.primary-button:hover:before{opacity:1}.primary-button:disabled{cursor:not-allowed;opacity:.45;box-shadow:none;transform:none}.primary-button:disabled:before,.primary-button:disabled:after{display:none}@keyframes sb-sweep{0%{opacity:0;background-position:150% 0}45%{opacity:.4}to{opacity:0;background-position:-150% 0}}@media (prefers-reduced-motion:reduce){.primary-button:after{opacity:0;animation:none}}.secondary-button{color:var(--primary);border:1px solid var(--line-strong);background:var(--surface)}.secondary-button:hover,.soft-action:hover{background:var(--primary-soft)}.metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:11px;margin-bottom:18px;display:grid}.metric-card,.content-panel,.plan-task,.timeline-summary,.question-panel,.mock-start-card,.mock-workbench,.note-editor,.error-summary,.error-row,.material-insight,.material-row,.practice-insight{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:9px}.metric-card{gap:7px;min-height:122px;padding:15px;display:grid}.metric-card>span{color:var(--text-muted);font-size:12px;font-weight:700}.metric-card strong{color:var(--primary);font-size:28px;line-height:1}.metric-card strong small{font-size:12px}.metric-card p{color:var(--text-muted);align-items:center;gap:5px;margin:0;font-size:11px;display:flex}.metric-card p svg{color:var(--icon-accent)}.content-panel,.plan-preview{margin-bottom:18px}.content-panel{padding:18px}.panel-heading{justify-content:space-between;gap:18px;margin-bottom:15px}.panel-heading h2{margin-top:3px;font-size:18px}.panel-heading>button,.material-insight>button,.material-row>button,.mock-result>button,.answer-feedback>button,.practice-insight button{color:var(--primary);flex:none;align-items:center;gap:3px;font-size:12px;font-weight:800;display:inline-flex}.mock-wrong-review-list{gap:8px;margin-top:12px;display:grid}.mock-wrong-review-list article{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:5px;padding:10px;display:grid}.mock-wrong-review-list strong,.mock-wrong-review-list p{margin:0}.mock-wrong-review-list strong{color:var(--text);font-size:12px;line-height:1.55}.mock-wrong-review-list p{color:var(--text-muted);font-size:12px;line-height:1.65}.diagnostic-content{grid-template-columns:1.15fr 1fr;gap:14px;display:grid}.weakness-block,.recommendation-block{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;padding:14px}.weakness-block>span,.recommendation-block>span{color:var(--text-muted);margin-bottom:11px;font-size:12px;font-weight:800;display:block}.knowledge-bars{gap:10px;display:grid}.knowledge-row{color:var(--text);grid-template-columns:21px minmax(84px,1fr) minmax(50px,.8fr) 31px;align-items:center;gap:7px;font-size:12px;display:grid}.rank-badge{width:20px;height:20px;color:var(--icon-ink);border-radius:999px;place-items:center;font-size:11px;font-weight:800;display:grid}.rank-badge.rose{background:var(--icon-rank-1)}.rank-badge.amber{background:var(--icon-rank-2)}.rank-badge.orange{background:var(--icon-rank-3)}.knowledge-name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.knowledge-bar{background:var(--line);border-radius:999px;height:5px;overflow:hidden}.knowledge-bar i,.task-progress-line i{border-radius:inherit;background:var(--icon-fill);height:100%;display:block}.knowledge-row b{color:var(--text-muted);font-size:11px}.recommendation-block ul{gap:12px;margin:0;padding:0;list-style:none;display:grid}.recommendation-block li{color:var(--text);align-items:center;gap:7px;font-size:12px;line-height:1.35;display:flex}.recommendation-block li svg{color:var(--icon-accent);flex:none}.plan-preview .panel-heading{padding:0 2px}.plan-summary{color:var(--text-muted);font-size:12px;font-weight:700}.task-list{gap:9px;display:grid}.plan-task{grid-template-columns:34px minmax(150px,1.3fr) minmax(116px,.7fr) auto;align-items:center;gap:11px;min-height:105px;padding:13px 14px;display:grid}.plan-task.is-completed{opacity:.83;background:var(--surface-muted)}.task-order{width:28px;height:28px;color:var(--icon-ink);background:var(--icon-fill-secondary);border-radius:8px;place-items:center;font-size:13px;font-weight:900;display:grid}.task-order.high{background:var(--icon-fill)}.task-order.medium{background:var(--icon-fill-secondary)}.task-order.low{background:var(--icon-fill-tertiary)}.task-details{min-width:0}.task-title-line{gap:7px}.task-title-line h3{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:14px;overflow:hidden}.task-title-line span,.task-title-line em{color:var(--text-muted);flex:none;font-size:10px;font-style:normal;font-weight:700}.task-title-line em{color:var(--primary);background:var(--primary-soft);border-radius:4px;padding:3px 5px}.task-details p{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin:6px 0 3px;font-size:13.5px;font-weight:500;line-height:1.5;overflow:hidden}.task-details small{color:var(--text-soft);text-overflow:ellipsis;white-space:nowrap;font-size:10px;display:block;overflow:hidden}.task-details .task-content-warning{color:var(--danger);font-weight:800}.task-details .task-scheduling-reason{color:var(--primary);font-weight:700}.adjust-plan-field .adjust-plan-prereq-hint{color:var(--warning,#b8860b);margin-top:2px;font-size:10px;display:block}.mind-map-edge.is-prerequisite path{stroke-dasharray:6 4}.mind-map-relation-list.is-prerequisite>strong{color:var(--peach)}.task-progress{flex-wrap:wrap;gap:4px 7px}.task-progress span{width:100%;color:var(--text-muted);align-items:center;gap:3px;font-size:10px;display:flex}.task-progress-line{background:var(--line);border-radius:999px;flex:1;height:5px;overflow:hidden}.task-progress b{color:var(--text-muted);font-size:10px}.task-actions{justify-content:end;gap:6px}.soft-action{min-height:30px;color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);padding:0 8px;font-size:11px}.page-heading-row{margin-bottom:24px}.page-heading-row .secondary-button,.mock-chip,.practice-score{flex:none;margin-top:10px}.timeline-summary{align-items:center;gap:17px;margin-bottom:17px;padding:14px 16px;display:flex}.timeline-summary div{gap:3px;display:grid}.timeline-summary span{color:var(--text-muted);font-size:11px;font-weight:700}.timeline-summary strong{font-size:17px}.timeline-summary i{background:var(--line);width:1px;height:29px}.timeline-summary button{color:var(--primary);align-items:center;gap:4px;margin-left:auto;font-size:12px;font-weight:800;display:flex}.plan-generation-status{border:1px solid var(--border-color);background:color-mix(in srgb, var(--surface-primary) 88%, var(--primary) 12%);border-radius:8px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;margin-bottom:17px;padding:15px 16px;display:grid}.plan-generation-status-icon{width:38px;height:38px;color:var(--primary);background:var(--surface);border-radius:8px;place-items:center;display:grid}.plan-generation-status strong,.plan-generation-status p{margin:0}.plan-generation-status p{color:var(--text-secondary);margin-top:4px;font-size:13px}.plan-generation-status.is-failed{border-color:var(--danger);background:color-mix(in srgb, var(--surface-primary) 84%, var(--danger) 16%)}.plan-generation-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.plan-empty-generation{border:1px dashed var(--border-color);min-height:92px;color:var(--text-secondary);background:var(--surface-primary);border-radius:8px;align-items:center;gap:10px;padding:18px;display:flex}.practice-score{border:1px solid var(--line);background:var(--surface);border-radius:8px;gap:2px;min-width:96px;padding:9px 12px;display:grid}.practice-score span{color:var(--text-muted);font-size:11px;font-weight:700}.practice-score strong{color:var(--primary);font-size:22px}.practice-score small{color:var(--text-muted);font-size:12px}.question-panel,.mock-workbench{padding:22px}.question-panel>header,.mock-workbench header{justify-content:space-between;gap:20px}.question-panel>header>div{gap:5px;display:grid}.question-label{color:var(--primary)}.question-source{color:var(--text-soft);font-weight:600}.question-counter{color:var(--text-muted);background:var(--surface-muted);border-radius:5px;padding:5px 7px;font-size:11px;font-weight:800}.question-panel h2{max-width:750px;margin:22px 0 20px;font-size:21px;line-height:1.5}.study-points{gap:10px;margin:0;padding:0;list-style:none;display:grid}.study-points li{color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;align-items:flex-start;gap:9px;padding:12px;font-size:13px;line-height:1.6;display:flex}.study-points svg{color:var(--primary);flex:none;margin-top:2px}.study-flow{gap:26px;margin-top:22px;display:grid}.study-layout{grid-template-columns:132px minmax(0,1fr);align-items:stretch;gap:16px;margin-top:22px;display:grid}.study-page-tabs{align-content:start;gap:8px;display:grid}.study-page-tabs button{min-height:48px;color:var(--text-muted);text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:8px;grid-template-columns:32px 1fr;align-items:center;gap:8px;padding:8px 9px;display:grid}.study-page-tabs button:hover,.study-page-tabs button.is-active{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.study-page-tabs span{background:var(--surface-muted);border-radius:8px;place-items:center;width:28px;height:28px;font-size:11px;font-weight:900;display:grid}.study-page-tabs button.is-active span{color:var(--icon-ink);background:var(--icon-fill)}.study-page-tabs strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.study-page-shell{border:1px solid var(--line);background:var(--surface);border-radius:8px;grid-template-rows:auto auto;min-height:0;padding:20px;display:grid}.study-page-content{align-content:start;min-height:0;max-height:none;margin-top:16px;padding-right:0;display:grid;overflow:visible}.study-page-grid{grid-template-columns:minmax(0,1fr) minmax(240px,.9fr);align-items:start;gap:16px;display:grid}.study-page-grid>section{gap:10px;min-width:0;display:grid}.study-subhead{color:var(--primary);font-size:11px;font-weight:850}.study-source-list,.study-checklist{gap:9px;margin:0;padding:0;list-style:none;display:grid}.study-source-list li,.study-checklist li{min-height:42px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;padding:10px 12px;font-size:12px;line-height:1.55}.study-exam-points,.worked-example-list,.study-practice-list,.study-self-check{gap:14px;display:grid}.study-planning-reason{color:var(--text);border-left:3px solid var(--primary);background:var(--surface-muted);margin:0;padding:11px 13px;font-size:13.5px;font-weight:500;line-height:1.7}.study-exam-point{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:10px;padding:13px 14px;display:grid}.study-exam-point header,.worked-example header{align-items:flex-start;gap:10px;display:flex}.study-exam-point header>span{width:28px;height:28px;color:var(--primary);background:var(--surface);border-radius:6px;flex:none;place-items:center;font-size:11px;font-weight:900;display:grid}.study-exam-point header>strong{flex:1;padding-top:4px;font-size:14px;line-height:1.45}.study-exam-point header>em{color:var(--primary);padding-top:5px;font-size:11px;font-style:normal;font-weight:800}.study-exam-point>p{color:var(--text);margin:0;font-size:13.5px;font-weight:500;line-height:1.7}.study-checklist li{align-items:flex-start;gap:8px;display:flex}.study-checklist svg{color:var(--primary);flex:none;margin-top:2px}.study-page-controls{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;margin-top:18px;padding-top:14px;display:flex}.study-page-controls button{min-height:34px;color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);border-radius:8px;padding:0 11px;font-size:12px;font-weight:800}.study-page-controls button:disabled{cursor:not-allowed;opacity:.45}.study-page-controls span{color:var(--text-muted);font-size:12px;font-weight:850}.study-section{gap:18px;padding-top:2px;display:grid}.study-section+.study-section{border-top:1px solid var(--line);padding-top:22px}.study-section-heading{align-items:flex-start;gap:10px;display:flex}.study-step{width:28px;height:28px;color:var(--icon-ink);background:var(--icon-fill);border-radius:8px;flex:none;place-items:center;font-size:13px;font-weight:900;display:grid}.study-section-heading span:not(.study-step){color:var(--primary);font-size:11px;font-weight:850}.study-section-heading h2{margin:2px 0 0;font-size:18px;line-height:1.45}.study-concepts{grid-template-columns:minmax(0,1fr);gap:14px;display:grid}.study-concept{border:1px solid var(--line);border-left:3px solid var(--line-strong);background:var(--surface-muted);border-radius:8px;align-content:start;gap:10px;min-height:0;padding:15px 16px;display:grid}.study-concept strong{color:var(--text);font-size:15px;line-height:1.45;display:block}.study-concept p,.worked-example p,.study-practice-card>p,.study-empty-practice{color:var(--text);margin:6px 0 0;font-size:14px;font-weight:500;line-height:1.75}.study-concept code{max-width:100%;color:var(--primary-strong);border:1px solid var(--line);background:var(--surface);overflow-wrap:anywhere;white-space:normal;border-radius:7px;padding:10px 12px;font-family:FinalCongee Maple Mono NF CN,ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.7;display:block}.study-concept>span{color:var(--text-soft);font-size:11px;font-weight:750}.study-formula{border:1px solid var(--line);border-left:3px solid var(--primary);background:var(--surface);border-radius:8px;gap:8px;margin-top:2px;padding:12px 13px;display:grid}.study-formula code{color:var(--primary-strong);background:0 0;border:0;border-radius:0;padding:0;font-size:13.5px;line-height:1.75}.study-formula p{color:var(--text);margin:0;font-size:14px;font-weight:500;line-height:1.75}.study-formula span{color:var(--text);font-size:13.5px;line-height:1.7}.formula-symbol{white-space:nowrap;align-items:baseline;gap:1px;display:inline-flex}.formula-katex{max-width:100%;color:inherit;vertical-align:-.08em;margin-inline:.08em;line-height:1;display:inline-block}.formula-katex .katex{color:inherit;white-space:normal;font-size:1em;line-height:1.15}.study-formula code .formula-katex{vertical-align:-.1em;margin-inline:0;font-size:1.12em}.study-formula code .formula-katex .katex{line-height:1.35}.formula-fraction{max-width:min(100%,36em);color:inherit;vertical-align:middle;grid-template-rows:auto auto;place-items:center;margin:0 .18em;line-height:1.05;display:inline-grid;transform:translateY(-.06em)}.formula-fraction-numerator,.formula-fraction-denominator{overflow-wrap:anywhere;text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:0 .14em;min-width:1.35em;max-width:100%;padding:0 .24em;display:inline-flex}.formula-fraction-numerator{border-bottom:1.5px solid;padding-bottom:.08em}.formula-fraction-denominator{padding-top:.08em}.formula-fraction.is-compound{margin-inline:.24em;line-height:1}.formula-fraction.is-compound>.formula-fraction-numerator,.formula-fraction.is-compound>.formula-fraction-denominator{min-width:3.2em;padding-inline:.34em}.formula-fraction.is-nested{margin-inline:.08em;font-size:.78em;line-height:.98;transform:translateY(-.02em)}.formula-fraction.is-nested>.formula-fraction-numerator,.formula-fraction.is-nested>.formula-fraction-denominator{min-width:1.1em;padding-inline:.16em}.formula-fraction.is-nested>.formula-fraction-numerator{border-bottom-width:1px}.formula-symbol sub,.formula-symbol sup{font-size:.68em;line-height:0}.formula-symbol sub{transform:translateY(.18em)}.formula-symbol sup{transform:translateY(-.32em)}code .formula-symbol sup{transform:translateY(-.28em)}code .formula-symbol sub,code .formula-symbol sup{font-size:.72em}.study-procedure,.study-pitfalls{color:var(--text);gap:6px;margin:4px 0 0;padding-left:20px;font-size:13.5px;line-height:1.7;display:grid}.study-pitfalls{color:var(--text)}.worked-example{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:14px;padding:16px;display:grid}.worked-example header{justify-content:space-between}.worked-example header div{gap:3px;display:grid}.worked-example header span,.worked-example header em{color:var(--primary);font-size:11px;font-style:normal;font-weight:800}.worked-example header h3{margin:0;font-size:15px;line-height:1.45}.worked-example-analysis{color:var(--text);border-left:3px solid var(--line-strong);background:var(--surface);margin:0;padding:11px 13px;font-size:14px;font-weight:500;line-height:1.75}.worked-example-question,.worked-example-question-text{gap:12px;display:grid}.worked-example-question>p,.worked-example-question-text{color:var(--text);margin:0;font-size:14px;font-weight:750;line-height:1.8}.worked-choice-list{gap:9px;display:grid}.worked-choice-option{border:1px solid var(--line);background:var(--surface);border-radius:8px;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:11px;padding:11px 13px;display:grid}.worked-choice-option>span{width:28px;height:28px;color:var(--primary);border:1px solid var(--line-strong);background:var(--primary-soft);border-radius:8px;place-items:center;font-size:13px;font-weight:900;display:grid}.worked-choice-option p{color:var(--text);margin:1px 0 0;font-size:13px;line-height:1.75}.worked-example ol{color:var(--text);gap:12px;margin:12px 0;padding-left:20px;font-size:14px;line-height:1.9;display:grid}.worked-example-answer{color:var(--text);border:1px solid var(--line);background:var(--surface);border-radius:8px;margin-top:2px;padding:10px 12px;font-size:13px;line-height:1.6;display:block}.study-practice-card{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:13px;padding:14px;display:grid}.study-practice-card>p{color:var(--text);margin-top:0;font-weight:750}.study-practice-confirm{justify-content:flex-end;display:flex}.choice-list{gap:9px;display:grid}.choice{text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:8px;justify-content:flex-start;gap:11px;width:100%;min-height:53px;padding:10px 12px;transition:border-color .15s,background-color .15s}.choice:hover:not(:disabled),.choice.is-selected{border-color:var(--primary);background:var(--primary-soft)}.choice.is-correct{color:#22815e;background:#edfff7;border-color:#76d4ad}.choice.is-wrong{color:#cd3556;background:#fff2f5;border-color:#ff9db3}:root[data-theme=dark] .choice.is-correct{color:#86f1c4;background:#173d39}:root[data-theme=dark] .choice.is-wrong{color:#ff9cad;background:#48233a}.choice b{width:26px;height:26px;color:var(--text-muted);border:1px solid;border-radius:7px;place-items:center;font-size:12px;display:grid}.choice span{flex:1;font-size:13px;line-height:1.5}.answer-feedback{border:1px solid;border-radius:8px;margin-top:14px;padding:14px}.answer-feedback.is-correct{color:#247c5d;background:#effcf5;border-color:#9be0be}.answer-feedback.is-wrong{color:#b63050;background:#fff5f7;border-color:#ffc2d0}:root[data-theme=dark] .answer-feedback.is-correct{color:#86f1c4;background:#173d39}:root[data-theme=dark] .answer-feedback.is-wrong{color:#ff9cad;background:#48233a}.answer-feedback>div{align-items:center;gap:7px;display:flex}.answer-feedback p{color:var(--text-muted);margin:8px 0;font-size:12px;line-height:1.65}.question-panel>footer,.mock-workbench>footer{justify-content:space-between;gap:10px;margin-top:21px;display:flex}.practice-bottom-grid{grid-template-columns:1fr 1.45fr;gap:12px;margin-top:14px;display:grid}.practice-heading-actions{align-items:center;gap:10px;display:flex}.practice-nav-trigger{white-space:nowrap;align-items:center;gap:6px;display:inline-flex}.question-chapter{color:var(--primary);border:1px solid var(--primary-soft);background:var(--primary-soft);border-radius:999px;align-items:center;padding:2px 9px;font-size:11px;font-weight:800;display:inline-flex}.practice-nav-backdrop{z-index:30;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#23151f52;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.practice-nav-modal{border:1px solid var(--line);background:var(--surface);width:min(100%,680px);max-height:min(680px,100vh - 48px);box-shadow:var(--shadow);border-radius:14px;flex-direction:column;display:flex;overflow:hidden}.practice-nav-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 20px 12px;display:flex}.practice-nav-header h2{margin:0;font-size:17px}.practice-nav-header p{color:var(--text-muted);margin:4px 0 0;font-size:12px}.practice-nav-close{width:32px;height:32px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;flex:none;place-items:center;display:grid}.practice-nav-close:hover{color:var(--text)}.practice-nav-legend{border-bottom:1px solid var(--line);background:var(--surface-muted);color:var(--text-muted);flex-wrap:wrap;gap:14px;padding:10px 20px;font-size:12px;font-weight:700;display:flex}.practice-nav-legend span{align-items:center;gap:5px;display:inline-flex}.practice-nav-body{gap:16px;padding:18px 20px 22px;display:grid;overflow-y:auto}.practice-nav-group{gap:9px;display:grid}.practice-nav-group-title{flex-wrap:wrap;align-items:baseline;gap:6px 10px;display:flex}.practice-nav-group-name{color:var(--text);font-size:13px;font-weight:800}.practice-nav-group-meta{color:var(--text-muted);font-size:11px;font-weight:700}.practice-nav-grid{grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:8px;display:grid}.practice-nav-cell{min-height:48px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);cursor:pointer;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:3px;padding:6px 4px;transition:transform .12s,box-shadow .12s;display:flex}.practice-nav-cell:hover{transform:translateY(-1px)}.practice-nav-cell-num{font-size:13px;font-weight:800;line-height:1}.practice-nav-cell svg{opacity:.9}.practice-nav-cell.is-correct{color:#247c5d;background:#effcf5;border-color:#9be0be}.practice-nav-cell.is-wrong{color:#b63050;background:#fff5f7;border-color:#ffc2d0}:root[data-theme=dark] .practice-nav-cell.is-correct{color:#86f1c4;background:#173d39;border-color:#86f1c466}:root[data-theme=dark] .practice-nav-cell.is-wrong{color:#ff9cad;background:#48233a;border-color:#ff9cad66}.practice-nav-cell.is-current{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.practice-insight{align-items:center;gap:12px;padding:14px;display:flex}.practice-insight>svg{color:var(--icon-accent)}.practice-insight>div{flex:1;gap:3px;display:grid}.practice-insight span{color:var(--text-muted);font-size:11px;font-weight:700}.practice-insight strong{font-size:14px}.progress-ring{flex:none;place-items:center;display:grid;position:relative}.progress-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.progress-ring circle{fill:none;stroke-width:4px}.ring-track{stroke:var(--line)}.ring-value{stroke:var(--primary);stroke-linecap:round}.progress-ring b{color:var(--text);font-size:10px;position:absolute}.mock-chip{color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);border-radius:8px;align-items:center;gap:6px;padding:8px 10px;display:flex}.mock-start-card{text-align:center;max-width:780px;margin:34px auto 0;padding:41px}.mock-paper-icon{width:58px;height:58px;color:var(--icon-ink);background:var(--icon-fill);border-radius:16px;place-items:center;margin:0 auto 18px;display:grid}.mock-start-card>span{color:var(--primary);font-size:12px;font-weight:800}.mock-start-card h2{margin-top:9px;font-size:26px}.mock-start-card p{max-width:560px;color:var(--text-muted);margin:12px auto 19px;font-size:13px;line-height:1.7}.mock-meta-row{color:var(--text-muted);justify-content:center;gap:22px;margin-bottom:23px;font-size:12px;display:flex}.mock-meta-row span{align-items:center;gap:5px;display:flex}.mock-workbench header>div{gap:8px;display:grid}.mock-workbench h2{max-width:690px;font-size:19px;line-height:1.55}.exam-timer{color:var(--primary);background:var(--primary-soft);border-radius:7px;grid-auto-flow:column;align-items:center;gap:5px;padding:8px 9px;font-size:13px;font-weight:800;display:flex!important}.mock-workbench textarea,.note-editor textarea{resize:vertical;width:100%;min-height:230px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;margin-top:18px;padding:14px;font-size:14px;line-height:1.65}.mock-result{color:#217b5a;background:#effcf5;border:1px solid #9be0be;border-radius:8px;align-items:center;gap:10px;margin-top:15px;padding:12px;display:flex}:root[data-theme=dark] .mock-result{color:#86f1c4;background:#173d39}.mock-result>div{flex:1}.mock-result strong{font-size:13px}.mock-result p{color:var(--text-muted);margin:4px 0 0;font-size:11px}.note-editor{overflow:hidden}.note-editor header{border-bottom:1px solid var(--line);background:var(--surface-muted);justify-content:space-between;padding:10px 13px}.note-editor header>div{align-items:center;gap:5px;display:flex}.editor-tool{min-width:28px;height:26px;color:var(--text-muted);border-radius:5px;padding:0 5px;font-size:11px;font-weight:800}.editor-tool:hover,.editor-tool.is-active{color:var(--primary);background:var(--surface)}.editor-tool.is-italic{font-style:italic}.note-editor header i{background:var(--line);width:1px;height:18px;margin:0 4px}.note-editor header>span{color:var(--mint);font-size:11px;font-weight:700}.note-view-switch{flex-wrap:wrap}.note-view-switch button{min-height:28px;color:var(--text-muted);border:1px solid #0000;border-radius:7px;align-items:center;gap:5px;padding:0 9px;font-size:11px;font-weight:800;transition:border-color .15s,color .15s,background-color .15s;display:inline-flex}.note-view-switch button:hover,.note-view-switch button.is-active{color:var(--primary);border-color:var(--line-strong);background:var(--surface)}.note-view-switch svg{flex:none}.note-editor textarea{background:var(--surface);border:0;border-radius:0;min-height:390px;margin:0}.note-markdown-preview{min-height:390px;color:var(--text);background:var(--surface);overflow-wrap:anywhere;padding:24px 28px;font-size:14px;line-height:1.78;overflow:auto}.note-markdown-preview>:first-child{margin-top:0}.note-markdown-preview>:last-child{margin-bottom:0}.note-markdown-preview h1,.note-markdown-preview h2,.note-markdown-preview h3,.note-markdown-preview h4{color:var(--text);letter-spacing:0;margin:24px 0 10px;line-height:1.28}.note-markdown-preview h1{font-size:26px}.note-markdown-preview h2{border-bottom:1px solid var(--line);padding-bottom:8px;font-size:21px}.note-markdown-preview h3{font-size:17px}.note-markdown-preview h4{font-size:15px}.note-markdown-preview p,.note-markdown-preview ul,.note-markdown-preview ol,.note-markdown-preview blockquote,.note-markdown-preview pre,.note-markdown-preview table{margin:0 0 14px}.note-markdown-preview ul,.note-markdown-preview ol{padding-left:22px}.note-markdown-preview li+li{margin-top:6px}.note-markdown-preview strong{color:var(--text)}.note-markdown-preview a{color:var(--primary);font-weight:800;text-decoration:none}.note-markdown-preview a:hover{text-decoration:underline}.note-markdown-preview code{border:1px solid var(--line);background:var(--surface-muted);border-radius:5px;padding:2px 5px;font-family:FinalCongee Maple Mono NF CN,ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9em}.note-markdown-preview pre{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;padding:13px;overflow:auto}.note-markdown-preview pre code{background:0 0;border:0;padding:0}.note-markdown-preview blockquote{color:var(--text-muted);border-left:3px solid var(--line-strong);padding:8px 0 8px 14px}.note-markdown-preview table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.note-markdown-preview th,.note-markdown-preview td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 10px}.note-markdown-preview th{background:var(--surface-muted);font-weight:850}.note-markdown-preview hr{background:var(--line);border:0;height:1px;margin:20px 0}.note-markdown-preview input[type=checkbox]{accent-color:var(--primary);margin-right:7px}.note-markdown-preview .contains-task-list{padding-left:0;list-style:none}.note-empty{color:var(--text-muted)}.note-editor footer{color:var(--text-muted);border-top:1px solid var(--line);background:var(--surface-muted);flex-wrap:wrap;gap:12px 18px;padding:11px 13px;font-size:11px}.note-editor footer span{align-items:center;gap:5px;display:flex}.error-summary{grid-template-columns:repeat(3,1fr);margin-bottom:14px;display:grid;overflow:hidden}.error-summary div{gap:4px;padding:15px 18px;display:grid}.error-summary div+div{border-left:1px solid var(--line)}.error-summary span{color:var(--text-muted);font-size:12px;font-weight:700}.error-summary strong{color:var(--primary);font-size:23px}.error-list,.material-list{gap:9px;display:grid}.error-row{grid-template-columns:minmax(0,1fr) 42px;min-height:112px;display:grid;overflow:hidden}.error-row.is-reviewed{opacity:.72}.error-row-main{min-width:0;color:inherit;text-align:left;grid-template-columns:32px minmax(0,1fr) 20px;align-items:center;gap:12px;padding:15px;display:grid}.error-row-main:hover{background:var(--surface-muted)}.error-symbol{width:32px;height:32px;color:var(--primary);background:var(--primary-soft);border-radius:8px;place-items:center;display:grid}.error-row.is-reviewed .error-symbol{color:var(--mint);background:#36b7831f}.error-row-content{gap:8px;min-width:0;display:grid}.error-title-line{flex-wrap:wrap;gap:7px;display:flex}.material-row h3{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:14px;overflow:hidden}.error-row-content>strong{min-width:0;color:var(--text);overflow-wrap:anywhere;font-size:14px;line-height:1.65}.error-title-line span{color:var(--primary);background:var(--primary-soft);border-radius:4px;flex:none;padding:3px 5px;font-size:10px;font-weight:800}.material-row p{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;margin:5px 0 0;font-size:11px;overflow:hidden}.error-meta-row{color:var(--text-muted);flex-wrap:wrap;gap:7px 14px;font-size:11px;display:flex}.error-meta-row>span{align-items:center;gap:4px;min-width:0;display:inline-flex}.error-meta-row>span:first-child{overflow-wrap:anywhere}.error-open-icon{color:var(--text-soft)}.material-row small{color:var(--text-soft);text-overflow:ellipsis;white-space:nowrap;margin-top:4px;font-size:10px;line-height:1.45;display:block;overflow:hidden}.archive-row>button{color:var(--primary);border:1px solid var(--line-strong);white-space:nowrap;border-radius:6px;justify-content:center;align-items:center;gap:4px;padding:6px 8px;font-size:11px;font-weight:800;display:inline-flex}.error-row>.danger-icon-button{width:42px;height:100%;color:var(--text-soft);border-left:1px solid var(--line);border-color:var(--line);border-radius:0;place-items:center;padding:0;display:grid}.error-row>.danger-icon-button:hover{color:var(--primary);background:var(--primary-soft)}.wrong-answer-retry-panel{gap:16px;display:grid}.archive-list{gap:9px;display:grid}.archive-row{border:1px solid var(--line);background:var(--surface);min-height:78px;box-shadow:var(--shadow-subtle);border-radius:9px;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px 15px;display:grid}.archive-symbol{width:32px;height:32px;color:var(--primary);background:var(--primary-soft);border-radius:8px;place-items:center;display:grid}.archive-row>div{min-width:0}.archive-row p{color:var(--text-muted);margin:5px 0 0;font-size:11px}.material-insight{grid-template-columns:48px minmax(0,1fr) max-content;align-items:center;gap:12px 18px;margin-bottom:14px;padding:18px 22px;display:grid}.material-insight-icon{width:48px;height:48px;color:var(--icon-ink);background:var(--icon-fill);border-radius:11px;place-items:center;display:grid}.material-insight>div:nth-child(2){min-width:0}.material-insight strong{color:var(--text);font-size:16px;font-weight:850;line-height:1.35;display:block}.material-insight p{max-inline-size:min(100%,48rem);color:var(--text-muted);margin:7px 0 0;font-size:13px;line-height:1.75}.material-insight small{color:var(--text-soft);margin-top:8px;font-size:11px;font-weight:800;line-height:1.45;display:block}.material-insight-status{flex-wrap:wrap;justify-content:flex-end;gap:7px;max-inline-size:min(100%,26rem);display:flex}.material-insight-status span{min-height:30px;color:var(--text);border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 82%, var(--primary-soft));white-space:nowrap;border-radius:999px;align-items:center;padding:5px 11px;font-size:13px;font-weight:800;line-height:1.35;display:inline-flex}.material-rescan-error{color:var(--primary);border:1px solid var(--line-strong);background:var(--primary-soft);border-radius:8px;margin:0 0 12px;padding:10px 12px;font-size:12px;font-weight:800}.material-action-message{color:var(--mint);background:#36b78317;border:1px solid #36b78357;border-radius:8px;margin:0 0 12px;padding:10px 12px;font-size:12px;font-weight:800}.material-toolbar{flex-wrap:wrap;justify-content:flex-end;gap:9px;display:flex}.material-upload-backdrop{z-index:45;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#23151f47;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.material-upload-loader{width:min(100%,360px);color:var(--text);border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow);text-align:center;border-radius:8px;justify-items:center;padding:28px 30px 26px;display:grid}.material-upload-animation{width:150px;height:92px;margin-bottom:12px;position:relative}.material-upload-file,.material-upload-target{color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow-subtle);place-items:center;display:grid;position:absolute}.material-upload-file{border-radius:6px;width:42px;height:50px;animation:1.8s ease-in-out infinite material-file-flow;top:8px;left:8px}.material-upload-file:after{content:"";background:var(--line-strong);height:2px;box-shadow:0 -6px 0 var(--line);border-radius:999px;position:absolute;bottom:8px;left:7px;right:7px}.material-upload-file.file-two{animation-delay:-1.2s}.material-upload-file.file-three{animation-delay:-.6s}.material-upload-target{width:56px;height:56px;color:var(--icon-ink);background:var(--icon-fill);border-radius:8px;animation:1.8s ease-in-out infinite material-target-pulse;bottom:8px;right:4px}.material-upload-loader>strong{font-size:17px;line-height:1.4}.material-upload-loader>p{color:var(--text-muted);margin:7px 0 17px;font-size:12px;line-height:1.6}.material-upload-progress{background:var(--primary-soft);border-radius:999px;width:min(100%,250px);height:4px;overflow:hidden}.material-upload-progress span{border-radius:inherit;background:var(--icon-fill);width:38%;height:100%;animation:1.3s ease-in-out infinite material-upload-progress;display:block}@keyframes material-file-flow{0%{opacity:0;transform:translateY(18px)scale(.88)}22%{opacity:1}72%{opacity:1;transform:translate(60px)scale(1)}to{opacity:0;transform:translate(80px,22px)scale(.72)}}@keyframes material-target-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@keyframes material-upload-progress{0%{transform:translate(-110%)}to{transform:translate(280%)}}@media (prefers-reduced-motion:reduce){.material-upload-file,.material-upload-target,.material-upload-progress span{animation:none}}.external-source-import{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:8px;grid-template-columns:minmax(190px,.9fr) minmax(240px,1.4fr) 112px 150px 150px auto;align-items:end;gap:9px;margin-bottom:14px;padding:13px;display:grid}.external-source-heading{grid-template-columns:34px minmax(0,1fr);align-items:center;gap:9px;display:grid}.external-source-heading>span{width:34px;height:34px;color:var(--icon-ink);background:var(--icon-fill);border-radius:8px;place-items:center;display:grid}.external-source-heading strong,.external-source-heading small{display:block}.external-source-heading strong{color:var(--text);font-size:13px}.external-source-heading small{color:var(--text-soft);margin-top:3px;font-size:10px;line-height:1.45}.external-source-import>input,.external-source-import>select{width:100%;min-width:0;min-height:38px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;padding:8px 10px;font-size:11px}.external-source-review{border:1px solid var(--line-strong);background:var(--surface);border-radius:8px;gap:10px;margin-bottom:14px;padding:14px;display:grid}.external-source-review header,.external-source-review footer{justify-content:space-between;align-items:center;gap:10px;display:flex}.external-source-review header>div{min-width:0}.external-source-review header strong,.external-source-review header small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.external-source-review header strong{color:var(--text);font-size:13px}.external-source-review header small,.external-source-review>p{color:var(--text-muted);margin:3px 0 0;font-size:11px}.external-source-review pre{max-height:260px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:7px;margin:0;padding:11px;font-family:inherit;font-size:11px;line-height:1.65;overflow:auto}.external-source-review footer{justify-content:flex-end}.external-source-status{color:var(--text-muted);background:var(--surface-muted);border-radius:6px;flex:none;padding:4px 7px;font-size:10px;font-weight:800}.external-source-status.is-pending_review{color:var(--mint);background:#36b7831c}.external-source-status.is-failed{color:var(--primary);background:var(--primary-soft)}.onboarding-steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:14px;display:grid}.onboarding-steps article{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:8px;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:8px 10px;padding:13px;display:grid}.onboarding-steps strong{width:34px;height:34px;color:var(--primary);background:var(--primary-soft);border-radius:8px;grid-row:span 2;place-items:center;display:grid}.onboarding-steps article.is-done strong{color:var(--mint);background:#36b7831f}.onboarding-steps span{color:var(--text);font-size:13px;font-weight:900}.onboarding-steps p{color:var(--text-muted);margin:0;font-size:11px;line-height:1.45}.setup-form,.diagnostic-workbench{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:8px;gap:12px;padding:16px;display:grid}.setup-form{grid-template-columns:repeat(2,minmax(0,1fr))}.setup-form label{gap:6px;min-width:0;display:grid}.setup-form label.is-wide{grid-column:1/-1}.setup-form span{color:var(--text-muted);font-size:12px;font-weight:850}.setup-form input,.setup-form textarea{border:1px solid var(--line);background:var(--surface-muted);width:100%;min-width:0;color:var(--text);font:inherit;border-radius:8px;font-size:13px}.setup-form input{height:40px;padding:0 11px}.setup-form textarea{resize:vertical;min-height:86px;padding:10px 11px;line-height:1.55}.setup-form footer,.diagnostic-workbench footer{flex-wrap:wrap;grid-column:1/-1;justify-content:space-between;align-items:center;gap:10px;padding-top:4px;display:flex}.setup-error{color:var(--primary);border:1px solid var(--line-strong);background:var(--primary-soft);border-radius:8px;grid-column:1/-1;margin:0;padding:10px 12px;font-size:12px;font-weight:850}.diagnostic-workbench header{gap:4px;display:grid}.diagnostic-workbench h2{color:var(--text);margin:0;font-size:22px}.diagnostic-workbench header p{color:var(--text-muted);margin:0;font-size:13px}.diagnostic-question-list{gap:12px;display:grid}.diagnostic-question{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:10px;padding:12px;display:grid}.diagnostic-question>strong{color:var(--text);font-size:14px;line-height:1.55}.diagnostic-workbench footer>span{color:var(--text-muted);font-size:12px;font-weight:850}.diagnostic-generation-backdrop{z-index:80;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#23151f47;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.diagnostic-generation-loader{width:min(100%,380px);color:var(--text);border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow);text-align:center;border-radius:8px;justify-items:center;padding:30px 30px 27px;display:grid}.diagnostic-generation-visual{width:160px;height:94px;margin-bottom:12px;position:relative}.diagnostic-generation-core,.diagnostic-question-sheet,.diagnostic-generation-spark{place-items:center;display:grid;position:absolute}.diagnostic-generation-core{z-index:2;width:58px;height:58px;color:var(--icon-ink);border:1px solid var(--line-strong);background:var(--icon-fill);box-shadow:var(--shadow-subtle);border-radius:8px;animation:1.8s ease-in-out infinite diagnostic-core-pulse;top:17px;left:52px}.diagnostic-question-sheet{width:38px;height:46px;color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow-subtle);opacity:0;border-radius:6px;animation:2.1s ease-in-out infinite diagnostic-sheet-build}.diagnostic-question-sheet:after{content:"";background:var(--line-strong);height:2px;box-shadow:0 -6px 0 var(--line);border-radius:999px;position:absolute;bottom:8px;left:7px;right:7px}.diagnostic-question-sheet.sheet-one{top:4px;left:4px}.diagnostic-question-sheet.sheet-two{animation-delay:-1.4s;top:45px;left:11px}.diagnostic-question-sheet.sheet-three{animation-delay:-.7s;top:24px;right:4px}.diagnostic-generation-spark{color:var(--primary);animation:1.2s ease-in-out infinite diagnostic-spark;top:2px;right:22px}.diagnostic-generation-loader>strong{font-size:17px;line-height:1.4}.diagnostic-generation-loader>p{color:var(--text-muted);margin:7px 0 17px;font-size:12px;line-height:1.6}.diagnostic-generation-progress{background:var(--primary-soft);border-radius:999px;width:min(100%,270px);height:4px;overflow:hidden}.diagnostic-generation-progress span{border-radius:inherit;background:var(--icon-fill);width:38%;height:100%;animation:1.3s ease-in-out infinite diagnostic-generation-progress;display:block}@keyframes diagnostic-core-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@keyframes diagnostic-sheet-build{0%,12%{opacity:0;transform:translateY(10px)scale(.84)}36%,76%{opacity:1;transform:translateY(0)scale(1)}to{opacity:0;transform:translateY(-7px)scale(.94)}}@keyframes diagnostic-spark{0%,to{opacity:.35;transform:scale(.72)rotate(0)}50%{opacity:1;transform:scale(1)rotate(12deg)}}@keyframes diagnostic-generation-progress{0%{transform:translate(-110%)}to{transform:translate(280%)}}@media (prefers-reduced-motion:reduce){.diagnostic-generation-core,.diagnostic-question-sheet,.diagnostic-generation-spark,.diagnostic-generation-progress span{animation:none}.diagnostic-question-sheet{opacity:1}}.initializing-panel{z-index:80;text-align:center;background:color-mix(in srgb, var(--surface) 88%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);place-content:center;gap:14px;padding:24px;display:grid;position:fixed;inset:0}.initializing-orbit{border:1px solid var(--line-strong);width:70px;height:70px;color:var(--primary);background:var(--surface-muted);box-shadow:var(--shadow-subtle);border-radius:50%;justify-self:center;place-items:center;animation:1.4s ease-in-out infinite initializing-pulse;display:grid}.initializing-panel h1{max-width:660px;color:var(--text);margin:0;font-size:clamp(26px,3vw,42px);line-height:1.15}.initializing-panel p{max-width:620px;color:var(--text-muted);margin:0 auto;font-size:14px;line-height:1.7}.initializing-progress{border:1px solid var(--line);background:var(--surface-muted);border-radius:999px;justify-self:center;width:min(620px,82vw);height:10px;overflow:hidden}.initializing-progress span{border-radius:inherit;background:linear-gradient(90deg, var(--primary-strong), var(--primary));height:100%;box-shadow:0 0 10px color-mix(in srgb, var(--primary) 38%, transparent);transition:width .5s;display:block;position:relative;overflow:hidden}.initializing-progress span:after{content:"";background:linear-gradient(100deg,#0000 20%,#ffffffb8 50%,#0000 80%);animation:1.5s ease-in-out infinite initializing-progress-shine;position:absolute;inset:0;transform:translate(-100%)}.initializing-panel>strong{color:var(--text);font-size:18px}@keyframes initializing-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}@keyframes initializing-progress-shine{to{transform:translate(100%)}}@media (prefers-reduced-motion:reduce){.initializing-progress span{transition:none}.initializing-progress span:after{animation:none}}.diagnostic-result-page{gap:18px;display:grid}.diagnostic-result-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.diagnostic-result-metrics article{border:1px solid var(--line);background:var(--surface);min-width:0;box-shadow:var(--shadow-subtle);border-radius:8px;gap:6px;padding:16px;display:grid}.diagnostic-result-metrics span{color:var(--text-muted);font-size:12px;font-weight:850}.diagnostic-result-metrics strong{color:var(--text);font-size:26px;line-height:1}.diagnostic-result-metrics small{color:var(--text-muted);font-size:13px}.diagnostic-review-panel{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:8px;padding:18px}.diagnostic-review-list{gap:12px;display:grid}.diagnostic-review-card{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;gap:12px;padding:16px;display:grid}.diagnostic-review-card h3{color:var(--text);margin:0;font-size:15px;line-height:1.6}.diagnostic-answer-compare{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.diagnostic-answer-compare p,.diagnostic-explanation{color:var(--text);margin:0;font-size:13px;line-height:1.65}.diagnostic-answer-compare p{border:1px solid var(--line);background:var(--surface);border-radius:8px;align-items:flex-start;gap:7px;padding:10px 11px;display:flex}.diagnostic-answer-compare svg:first-child{flex:none;margin-top:3px}.diagnostic-answer-compare p:first-child svg{color:var(--primary)}.diagnostic-answer-compare p:last-child svg{color:var(--mint)}.diagnostic-explanation{border-left:3px solid var(--primary);background:var(--surface);padding:12px}.diagnostic-review-empty{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;align-items:center;gap:12px;padding:16px;display:flex}.diagnostic-review-empty svg{color:var(--mint)}.diagnostic-review-empty strong,.diagnostic-review-empty p{margin:0}.diagnostic-review-empty strong{color:var(--text)}.diagnostic-review-empty p{color:var(--text-muted);margin-top:3px;font-size:13px}.diagnostic-result-actions{justify-content:flex-end;gap:10px;display:flex}.material-row{grid-template-columns:39px minmax(0,1fr) max-content;align-items:center;gap:12px;min-height:75px;padding:12px 15px;display:grid}.file-type{width:39px;height:39px;color:var(--primary);background:var(--primary-soft);border-radius:8px;place-items:center;font-size:10px;font-weight:900;display:grid}.material-row>div:not(.material-actions){min-width:0}.material-actions{flex-wrap:wrap;flex:none;justify-content:flex-end;justify-self:end;align-items:center;gap:9px;min-width:0;max-width:360px;display:flex}.material-status{min-height:25px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;padding:0 8px;font-size:12px;font-weight:800;display:inline-flex}.material-status.ai-ready,.material-status.preview-ready,.material-status.preview-converted{color:var(--mint);background:#36b78317;border-color:#36b7835c}.material-status.ai-partial,.material-status.preview-limited{color:var(--peach);background:#ff8d641c;border-color:#ff8d6461}.material-status.ai-skipped{color:var(--text-muted);border-color:var(--line);background:var(--surface-muted)}.material-status.ai-unreadable,.material-status.preview-unsupported{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.material-actions button,.material-actions a{min-height:32px;color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);white-space:nowrap;border-radius:7px;align-items:center;gap:4px;padding:0 9px;font-size:11px;font-weight:850;text-decoration:none;display:inline-flex}.material-actions button:hover,.material-actions a:hover{background:var(--primary-soft)}.material-actions .material-delete-button{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.material-actions .material-delete-button:hover{background:#ff537f29}.upload-trigger input{display:none}.ai-panel{border-left:1px solid var(--line);min-width:0;height:calc(100dvh - 20px);min-height:0;-webkit-backdrop-filter:var(--panel-filter);backdrop-filter:var(--panel-filter);background:#fffdfe70;flex-direction:column;align-self:start;padding:11px 12px 12px;transition:padding .18s,background-color .18s;display:flex;overflow:hidden}.ai-resize-handle{z-index:3;cursor:col-resize;touch-action:none;justify-content:center;align-items:stretch;width:12px;padding:0;display:flex;position:absolute;top:0;bottom:0;left:-6px}.ai-resize-handle:before{content:"";background:0 0;width:2px;transition:background-color .15s,box-shadow .15s}.ai-resize-handle:hover:before,.ai-resize-handle:focus-visible:before,.app-shell.is-ai-resizing .ai-resize-handle:before{background:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}:root[data-theme=dark] .ai-panel{background:#0b1731c7}.ai-panel.is-collapsed{align-items:center;padding:12px 8px}.ai-panel.is-collapsed .ai-resize-handle,.app-shell.is-material-preview-open .ai-resize-handle{display:none}.ai-collapsed-rail{flex-direction:column;align-items:center;gap:12px;width:100%;min-height:0;display:none}.ai-panel.is-collapsed .ai-collapsed-rail{display:flex}.ai-panel.is-collapsed .ai-panel-header,.ai-panel.is-collapsed .ai-mode-switch,.ai-panel.is-collapsed .ai-scroll,.ai-panel.is-collapsed .chat-turn-rail,.ai-panel.is-collapsed .ai-input{display:none}.ai-expand-button,.ai-collapse-toggle{color:var(--primary)}.ai-collapsed-brand{color:var(--text-muted);text-align:center;justify-items:center;gap:5px;font-size:11px;font-weight:900;line-height:1.15;display:grid}.ai-collapsed-brand .ai-avatar{width:30px;height:30px}.ai-panel-header{border-bottom:1px solid var(--line);justify-content:space-between;padding:0 2px 10px}.ai-panel-header>div{align-items:center;gap:8px;display:flex}.ai-panel-actions{align-items:center;gap:5px;display:flex}.ai-avatar{width:30px;height:30px;color:var(--icon-ink);background:var(--icon-fill-secondary);border-radius:9px;place-items:center;display:grid}.ai-panel-header h2{font-size:15px}.ai-panel-header span:not(.ai-avatar){color:var(--text-muted);margin-top:2px;font-size:10px;font-weight:700;display:block}.ai-close{display:none}.ai-mode-switch{border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px;margin:10px 0 0;padding:3px;display:grid}.ai-mode-switch button{min-width:0;height:30px;color:var(--text-muted);letter-spacing:0;cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:5px;font-size:11px;font-weight:900;display:inline-flex}.ai-mode-switch button.is-active{color:var(--primary-strong);background:var(--surface);box-shadow:0 1px 4px #331f2a17}.ai-scroll{overscroll-behavior:contain;-ms-overflow-style:none;scrollbar-width:none;flex:auto;min-width:0;min-height:0;padding:10px 2px 6px;overflow:hidden auto}.ai-scroll::-webkit-scrollbar{width:0;height:0}.ai-scroll-wrap{flex:auto;min-width:0;min-height:0;display:flex;position:relative}.ai-scroll-wrap .ai-scroll{flex:auto}.chat-turn-rail{z-index:2;pointer-events:none;flex-direction:column;justify-content:flex-start;align-items:center;gap:7px;padding:2px 0;display:flex;position:absolute;top:12px;bottom:12px;right:3px}.chat-turn-dot{pointer-events:auto;background:var(--line-strong);cursor:pointer;border:none;border-radius:50%;width:7px;height:7px;padding:0;transition:transform .14s,background-color .14s;position:relative}.chat-turn-dot:hover{background:var(--primary-strong);transform:scale(1.45)}.chat-turn-dot.is-active{background:var(--primary)}.chat-turn-dot:after{content:attr(data-tooltip);white-space:nowrap;color:#fff;opacity:0;pointer-events:none;background:#000000c7;border-radius:5px;padding:3px 7px;font-size:11px;transition:opacity .12s;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.chat-turn-dot:hover:after{opacity:1}.companion-card{text-align:center;border:1px solid var(--line);background:linear-gradient(135deg, var(--primary-soft), transparent 80%), var(--surface);border-radius:9px;padding:12px 13px}.companion-orb{width:42px;height:42px;color:var(--primary);border:1px solid var(--line-strong);background:var(--surface);border-radius:16px;place-items:center;margin:0 auto 8px;display:grid}.companion-orb svg{width:30px;height:30px}.companion-card strong{font-size:13px}.companion-card p{color:var(--text-muted);margin:6px 0 0;font-size:11px;line-height:1.45}.companion-card.is-agent-mode{background:linear-gradient(135deg, var(--agent-soft), transparent 78%), var(--surface)}.companion-card.is-agent-mode .companion-orb{color:var(--agent-accent)}.agent-workbench{border:1px solid var(--line);background:#ffffffa3;border-radius:9px;gap:9px;margin:10px 0;padding:10px;display:grid}:root[data-theme=dark] .agent-workbench{background:#0f1e3ebd}.agent-workbench-heading{color:var(--agent-accent);align-items:center;gap:8px;display:flex}.agent-workbench-heading>div{gap:2px;display:grid}.agent-workbench-heading span{color:var(--text-muted);font-size:10px;font-weight:850}.agent-workbench-heading strong{color:var(--text);font-size:12px;line-height:1.35}.agent-prompt-grid{gap:6px;display:grid}.agent-prompt-grid button{min-width:0;min-height:34px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);text-align:left;cursor:pointer;border-radius:7px;padding:7px 9px;font-size:11px;font-weight:800;line-height:1.35}.agent-prompt-grid button:hover{color:var(--primary-strong);border-color:var(--line-strong);background:var(--primary-soft)}.chat-history{gap:7px;min-width:0;margin:10px 0;display:grid}.chat-message{box-sizing:border-box;border:1px solid var(--line);background:var(--surface);border-radius:9px 9px 9px 3px;align-self:start;min-width:0;max-width:94%;padding:8px 10px 7px}.chat-message:not(.is-user){width:94%;color:var(--text);font-family:var(--font-system);background:#ffffffc2}:root[data-theme=dark] .chat-message:not(.is-user){background:#0f1e3ed1}.chat-message.is-user{color:var(--primary-strong);border-color:var(--line-strong);background:var(--primary-soft);border-radius:9px 9px 3px;justify-self:end}.chat-message.is-pending{color:var(--text-muted);border-style:dashed}.chat-message.is-streaming{color:var(--text);border-style:solid}.chat-tool-events{flex-direction:column;gap:4px;margin:0 0 8px;padding:0;list-style:none;display:flex}.chat-tool-events li{color:var(--text-muted);align-items:center;gap:6px;font-size:11.5px;line-height:1.3;display:flex}.chat-tool-events li.is-running{color:var(--primary-strong)}.chat-tool-events li.is-done{color:#16a34a}.chat-tool-icon{justify-content:center;align-items:center;display:inline-flex}.chat-tool-spin{animation:1s linear infinite chat-tool-spin}@keyframes chat-tool-spin{to{transform:rotate(360deg)}}.chat-streaming-placeholder{color:var(--text-muted);margin:0;font-size:12px}.chat-cursor{color:var(--primary-strong);margin-left:1px;animation:1s steps(2,start) infinite chat-cursor-blink;display:inline-block}@keyframes chat-cursor-blink{50%{opacity:0}}.chat-message p{margin:0;font-size:12px;line-height:1.42}.chat-markdown{overflow-wrap:anywhere;min-width:0;color:var(--text);font-size:12.5px;line-height:1.72}.chat-markdown>:first-child{margin-top:0}.chat-markdown>:last-child{margin-bottom:0}.chat-markdown h1,.chat-markdown h2,.chat-markdown h3,.chat-markdown h4{color:var(--text);letter-spacing:0;margin:13px 0 6px;font-weight:850;line-height:1.35}.chat-markdown h1,.chat-markdown h2{border-bottom:1px solid var(--line);padding-bottom:5px;font-size:14px}.chat-markdown h3{font-size:13px}.chat-markdown h4{font-size:12.5px}.chat-markdown p,.chat-markdown ul,.chat-markdown ol,.chat-markdown blockquote,.chat-markdown pre,.chat-markdown table,.chat-markdown hr{margin:0 0 9px}.chat-markdown p,.chat-markdown li,.chat-markdown blockquote,.chat-markdown td{line-height:1.72}.chat-markdown ul,.chat-markdown ol{padding-left:18px}.chat-markdown li+li{margin-top:4px}.chat-markdown strong{color:var(--primary-strong);font-weight:850}.chat-markdown code{border:1px solid var(--line);background:var(--surface-muted);border-radius:5px;padding:1px 4px;font-family:FinalCongee Maple Mono NF CN,ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9em}.chat-markdown pre{border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;max-width:100%;padding:9px;overflow:auto}.chat-markdown pre code{background:0 0;border:0;padding:0}.chat-markdown .katex{max-width:100%;color:inherit;vertical-align:-.12em;font-size:1.04em;display:inline-block;overflow:auto hidden}.chat-markdown .katex-display{border:1px solid var(--line);background:var(--surface-muted);border-radius:6px;max-width:100%;margin:9px 0;padding:8px 10px;overflow:auto hidden}.chat-markdown .katex-display>.katex{text-align:left;vertical-align:baseline;max-width:none;display:block;overflow:visible}.chat-markdown .katex-error{color:var(--danger);overflow-wrap:anywhere;font-family:FinalCongee Maple Mono NF CN,ui-monospace,SFMono-Regular,Consolas,monospace}.chat-markdown blockquote{color:var(--text-muted);border-left:3px solid var(--line-strong);padding:6px 0 6px 10px}.chat-markdown table{border-collapse:collapse;table-layout:fixed;width:100%;max-width:100%;display:table}.chat-markdown th,.chat-markdown td{border:1px solid var(--line);overflow-wrap:anywhere;text-align:left;vertical-align:top;word-break:break-word;min-width:0;padding:6px 7px}.chat-markdown th{background:var(--surface-muted);font-weight:850}.chat-markdown hr{background:var(--line);border:0;height:1px}.chat-message time{color:var(--text-soft);text-align:right;margin-top:3px;font-size:10px;display:block}.ai-send-error{color:var(--primary-strong);border:1px solid var(--line-strong);background:var(--primary-soft);border-radius:8px;margin:4px 0 10px;padding:8px 10px;font-size:11px;line-height:1.45}.proposal-card{background:#fff9ed;border:1px solid #ffd6a4;border-radius:9px;padding:10px}:root[data-theme=dark] .proposal-card{background:#332a21;border-color:#765a34}.proposal-heading{color:#d2802d;gap:8px}.proposal-heading>div{gap:2px;display:grid}.proposal-heading span{font-size:11px;font-weight:800}.proposal-heading strong{color:var(--text);font-size:13px}.proposal-card>p{color:var(--text-muted);margin:7px 0 6px;font-size:11px;line-height:1.55}.proposal-impact{color:var(--text);background:#ffffff8f;border-radius:6px;padding:7px;font-size:11px;line-height:1.5}:root[data-theme=dark] .proposal-impact{background:#ffffff0f}.proposal-actions{grid-template-columns:1fr 1fr;gap:6px;margin-top:8px;display:grid}.proposal-actions .primary-button,.proposal-actions .secondary-button{min-height:32px;padding:0 7px;font-size:11px}.applied-proposal{color:var(--mint);background:#36b78314;border:1px solid #36b78357;border-radius:8px;align-items:center;gap:7px;padding:8px;font-size:12px;font-weight:800;display:flex}.ai-input{border-top:1px solid var(--line);gap:8px;margin-bottom:14px;padding:8px 2px 0;display:flex}.ai-input input{min-width:0;height:42px;color:var(--text);border:1px solid var(--line);background:var(--surface);border-radius:8px;flex:1;padding:0 12px;font-size:12px}.ai-input input::placeholder,.mock-workbench textarea::placeholder{color:var(--text-soft)}.ai-input button{width:42px;height:42px;color:var(--icon-ink);background:var(--icon-fill);touch-action:manipulation;border-radius:8px;flex:none;place-items:center;display:grid}.ai-input button:disabled{cursor:not-allowed;opacity:.48}.modal-backdrop{z-index:20;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#23151f52;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.new-course-modal,.search-modal{border:1px solid var(--line);background:var(--surface);width:min(100%,420px);box-shadow:var(--shadow);border-radius:11px;padding:24px}.modal-icon{width:38px;height:38px;color:var(--icon-ink);background:var(--icon-fill);border-radius:9px;place-items:center;margin-bottom:13px;display:grid}.new-course-modal h2{margin:0;font-size:21px}.new-course-modal>p{color:var(--text-muted);margin:8px 0 16px;font-size:12px;line-height:1.6}.new-course-modal label{color:var(--text-muted);gap:6px;margin-top:10px;font-size:11px;font-weight:800;display:grid}.new-course-form{gap:10px;display:grid}.new-course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.new-course-modal input{min-width:0;height:38px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;outline:none;padding:0 10px}.new-course-modal input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.form-error{color:#d92f5d;margin:0;font-size:12px;font-weight:800;line-height:1.5}.modal-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}.search-modal{width:min(100%,680px);max-height:min(680px,100vh - 40px);padding:0;display:grid;overflow:hidden}.search-form{border-bottom:1px solid var(--line);align-items:center;gap:10px;min-height:56px;padding:8px 10px 8px 16px;display:flex}.search-form>svg{color:var(--primary);flex:none}.search-form input{min-width:0;color:var(--text);background:0 0;outline:none;flex:1;font-size:14px}.search-form button{width:34px;height:34px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;flex:none;place-items:center;display:grid}.search-form button:disabled{cursor:not-allowed;opacity:.45}.search-form .search-submit:not(:disabled){color:var(--icon-ink);background:var(--icon-fill);border-color:#0000}.search-results{align-content:start;min-height:116px;max-height:min(560px,100vh - 116px);padding:8px;display:grid;overflow-y:auto}.search-feedback{color:var(--text-muted);text-align:center;align-self:center;margin:0;padding:34px 16px;font-size:12px}.search-feedback.is-error{color:#d92f5d}.search-result{width:100%;color:var(--text);text-align:left;border-radius:7px;grid-template-columns:34px minmax(0,1fr);gap:10px;padding:10px;display:grid}.search-result:hover,.search-result:focus-visible{background:var(--surface-muted);outline:none}.search-result-icon{width:34px;height:34px;color:var(--icon-ink);background:var(--icon-fill);border-radius:7px;place-items:center;display:grid}.search-result-copy{gap:4px;min-width:0;display:grid}.search-result-copy strong,.search-result-copy span,.search-result-copy small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.search-result-copy strong{font-size:13px}.search-result-copy span{color:var(--text-muted);font-size:12px}.search-result-copy small{color:var(--primary);font-size:10px;font-weight:750}@keyframes search-spin{to{transform:rotate(360deg)}}.material-preview-backdrop{z-index:30}.material-preview-modal{border:1px solid var(--line);background:var(--surface);width:min(100%,1040px);height:min(760px,100vh - 40px);box-shadow:var(--shadow);border-radius:11px;grid-template-rows:auto minmax(0,1fr);display:grid;overflow:hidden}.material-preview-header{border-bottom:1px solid var(--line);background:var(--surface-muted);align-items:center;gap:12px;min-width:0;padding:13px 14px;display:flex}.material-preview-header>div{flex:1;min-width:0}.material-preview-header h2{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:16px;line-height:1.3;overflow:hidden}.material-preview-header p{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;margin:3px 0 0;font-size:11px;overflow:hidden}.material-preview-state-row{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.material-preview-state-row .material-status{min-height:23px;font-size:11px}.material-preview-header .secondary-button{flex:none;text-decoration:none}.material-preview-content{min-height:0;padding:15px;overflow:auto}.material-image-preview{place-items:center;min-height:100%;display:grid}.material-image-preview img{object-fit:contain;border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;max-width:100%;max-height:100%}.material-frame-preview{border:1px solid var(--line);background:#fff;border-radius:8px;width:100%;height:100%;min-height:620px}.material-text-preview{min-height:100%;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);overflow-wrap:anywhere;white-space:pre-wrap;border-radius:8px;margin:0;padding:16px;font-family:inherit;font-size:13px;line-height:1.75}.material-markdown-preview{min-height:100%;border:1px solid var(--line);background:var(--surface);border-radius:8px;max-inline-size:980px;margin:0 auto}.material-markdown-preview h1{font-size:24px}.material-markdown-preview h2{margin-top:28px}.material-markdown-preview pre{white-space:pre}.material-sheet-preview{gap:10px;display:grid}.material-sheet-preview header{justify-content:space-between;align-items:center;gap:12px;display:flex}.material-sheet-preview strong{color:var(--text);font-size:14px}.material-sheet-preview span{color:var(--text-muted);font-size:11px;font-weight:800}.material-table-wrap{border:1px solid var(--line);background:var(--surface);border-radius:8px;max-height:calc(100vh - 190px);overflow:auto}.material-table-wrap table{border-collapse:collapse;min-width:100%}.material-table-wrap td{min-width:86px;max-width:260px;color:var(--text);border-right:1px solid var(--line);border-bottom:1px solid var(--line);overflow-wrap:anywhere;vertical-align:top;padding:8px 10px;font-size:12px;line-height:1.45}.material-table-wrap tr:first-child td{background:var(--surface-strong);font-weight:850}.material-preview-empty{min-height:280px;color:var(--text-muted);text-align:center;align-content:center;justify-items:center;gap:10px;padding:24px;display:grid}.material-preview-empty svg{color:var(--primary)}.material-preview-empty strong{color:var(--text);font-size:15px}.material-preview-empty p{max-width:360px;margin:0;font-size:12px;line-height:1.7}.settings-layout{grid-template-columns:minmax(0,1.35fr) minmax(270px,.65fr);align-items:start;gap:16px;display:grid}.settings-side{gap:16px;min-width:0;display:grid}.settings-panel{border:1px solid var(--line);background:var(--surface);min-width:0;box-shadow:var(--shadow-subtle);border-radius:9px;padding:19px}.settings-panel-heading{align-items:center;gap:10px;margin-bottom:17px;display:flex}.settings-panel-heading>div{min-width:0}.settings-heading-icon{width:37px;height:37px;color:var(--icon-ink);background:var(--icon-fill);border-radius:9px;flex:none;place-items:center;display:grid}.settings-heading-icon.secondary{background:var(--icon-fill-secondary)}.settings-heading-icon.tertiary{color:var(--icon-ink-soft);background:var(--icon-fill-tertiary)}.settings-panel-heading h2{overflow-wrap:anywhere;color:var(--text);letter-spacing:0;margin:0;font-size:16px;line-height:1.28}.settings-panel-heading p{color:var(--text-muted);margin:3px 0 0;font-size:11px;line-height:1.5}.connection-status{max-width:265px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface);border-radius:7px;align-items:center;gap:6px;margin-top:10px;padding:8px 10px;font-size:11px;font-weight:800;display:inline-flex}.connection-status.success,.connection-status.saved{color:var(--mint);background:#36b78314;border-color:#36b78366}.connection-status.error{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.connection-status.testing{color:var(--peach);background:#ff8d641a;border-color:#ff8d646b}.provider-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:17px;display:grid}.provider-option{text-align:left;border:1px solid var(--line);background:var(--surface-muted);border-radius:8px;align-content:center;gap:4px;min-height:68px;padding:10px;transition:border-color .15s,background-color .15s,transform .15s;display:grid}.provider-option:hover{border-color:var(--line-strong);transform:translateY(-1px)}.provider-option.is-selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 7px 16px #ff4d7814}.study-page-tabs button:disabled{cursor:not-allowed;opacity:.42}.provider-option span{overflow-wrap:anywhere;min-width:0;color:var(--text);font-size:12px;font-weight:850;line-height:1.3}.provider-option small{overflow-wrap:anywhere;min-width:0;color:var(--text-muted);font-size:10px;line-height:1.35}.model-form-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:13px;display:grid}.settings-field{gap:7px;min-width:0;display:grid}.settings-field-wide{grid-column:1/-1}.settings-field>span{color:var(--text-muted);font-size:11px;font-weight:800}.settings-field>input,.settings-field>select,.field-with-icon{min-width:0;min-height:40px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;font-size:12px;line-height:1.35}.settings-field>input,.settings-field>select{padding:8px 11px}.field-with-icon{align-items:center;gap:8px;padding:8px 10px;display:flex}.field-with-icon>svg{color:var(--text-soft);flex:none}.field-with-icon input{width:100%;min-width:0;color:var(--text);background:0 0;outline:none;line-height:1.35}.field-with-icon button{width:28px;height:28px;color:var(--text-muted);border-radius:6px;flex:none;place-items:center;display:grid}.field-with-icon button:hover{color:var(--primary);background:var(--primary-soft)}.vision-toggle{border:1px solid var(--line);background:var(--surface-muted);cursor:pointer;border-radius:8px;align-items:center;gap:10px;margin-top:17px;padding:12px;display:flex}.vision-toggle input{opacity:0;position:absolute}.toggle-track{background:var(--text-soft);border-radius:999px;flex:none;width:34px;height:19px;transition:background-color .15s;position:relative}.toggle-track i{background:#fff;border-radius:999px;width:13px;height:13px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #23151f38}.vision-toggle input:checked+.toggle-track{background:var(--primary)}.vision-toggle input:checked+.toggle-track i{transform:translate(15px)}.vision-toggle strong,.vision-toggle small{display:block}.vision-toggle strong{color:var(--text);font-size:12px}.vision-toggle small{color:var(--text-muted);margin-top:3px;font-size:10px;line-height:1.45}.settings-actions{justify-content:flex-end;gap:8px;margin-top:17px;display:flex}.knowledge-settings{border-top:1px solid var(--line);margin-top:21px;padding-top:20px}.knowledge-form-grid{margin-top:15px}.knowledge-form-grid .connection-status{align-self:end;max-width:none;min-height:40px;margin-top:0}.knowledge-metrics{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:15px 0 0;display:grid}.knowledge-metrics div{text-align:center;border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;min-width:0;padding:9px}.knowledge-metrics dt,.knowledge-metrics dd{margin:0}.knowledge-metrics dt{color:var(--text-muted);font-size:10px}.knowledge-metrics dd{overflow-wrap:anywhere;color:var(--text);margin-top:4px;font-size:13px;font-weight:850}.profile-summary-list{gap:9px;margin:0;display:grid}.profile-summary-list div{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;min-width:0;padding-bottom:9px;display:flex}.profile-summary-list div:last-child{border-bottom:0;padding-bottom:0}.profile-summary-list dt{color:var(--text-muted);flex:none;font-size:11px;font-weight:700;line-height:1.4}.profile-summary-list dd{min-width:0;max-width:62%;color:var(--text);text-align:right;text-overflow:ellipsis;white-space:nowrap;flex:auto;margin:0;font-size:12px;font-weight:800;overflow:hidden}.theme-selector{grid-template-columns:1fr 1fr;gap:8px;display:grid}.theme-selector button{min-width:0;min-height:39px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface-muted);overflow-wrap:anywhere;text-align:center;white-space:normal;border-radius:7px;justify-content:center;align-items:center;gap:6px;padding:7px 8px;font-size:11px;font-weight:800;line-height:1.25;display:flex}.theme-selector button.is-selected{color:var(--primary);border-color:var(--primary);background:var(--primary-soft)}.appearance-font-field{margin-top:14px}.font-size-control{gap:8px;margin-top:14px;display:grid}.font-size-control>span:first-child,.font-size-ticks{color:var(--text-muted);justify-content:space-between;align-items:center;gap:10px;font-size:11px;font-weight:800;display:flex}.font-size-control b{color:var(--primary);font-size:12px}.font-size-control input{width:100%;accent-color:var(--primary)}.font-size-control input:focus-visible{outline-offset:4px;outline:3px solid #ff4d783d}.font-size-ticks{color:var(--text-soft);font-size:10px;font-weight:700}.font-preview{min-height:42px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);overflow-wrap:anywhere;border-radius:7px;align-items:center;margin:10px 0 0;padding:9px 11px;font-size:16px;line-height:1.35;display:flex}.user-profile-textarea{resize:vertical;width:100%;min-height:150px;color:var(--text);border:1px solid var(--line);background:var(--surface-muted);border-radius:7px;padding:11px 12px;font-size:12px;line-height:1.65}.user-profile-textarea::placeholder{color:var(--text-soft)}.user-profile-textarea:disabled{cursor:wait;opacity:.72}.user-profile-meta{color:var(--text-soft);justify-content:space-between;gap:10px;margin-top:8px;font-size:10px;font-weight:750;line-height:1.45;display:flex}.user-profile-meta span{overflow-wrap:anywhere;min-width:0}.is-spinning{animation:.8s linear infinite settings-spin}@keyframes settings-spin{to{transform:rotate(360deg)}}@media (width<=1450px){.app-shell{--nav-width:78px;--ai-panel-width:304px;grid-template-columns:var(--nav-width) minmax(520px, 1fr) var(--ai-panel-width)}.app-shell.is-ai-collapsed{grid-template-columns:var(--nav-width) minmax(520px, 1fr) 72px}.brand-name{display:none}.brand-button{justify-content:center}.main-navigation{padding-inline:9px}.course-panel{width:270px;padding-inline:14px}.topbar,.module-page{padding-inline:23px}.course-switcher-trigger{width:100%}.module-page{padding-bottom:54px}.plan-task{grid-template-columns:32px minmax(145px,1fr) 130px}.task-actions{grid-column:2/-1;justify-content:start}.provider-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.external-source-import{grid-template-columns:minmax(240px,1fr) 112px minmax(130px,.7fr) minmax(130px,.7fr) auto}.external-source-heading{grid-column:1/-1}}@media (width<=1180px){.app-shell{--nav-width:70px;grid-template-columns:var(--nav-width) minmax(0, 1fr)}.app-shell.is-ai-collapsed{grid-template-columns:var(--nav-width) minmax(0, 1fr)}.app-shell.is-ai-open{grid-template-columns:var(--nav-width) minmax(0, 1fr) minmax(260px, 304px)}.ai-panel{z-index:15;width:min(355px,94vw);height:100dvh;box-shadow:var(--shadow);transition:transform .22s;position:fixed;top:0;right:0;transform:translate(105%)}.ai-resize-handle{display:none}.ai-panel.is-collapsed{align-items:stretch;padding:20px 14px 18px}.ai-panel.is-collapsed .ai-collapsed-rail,.ai-collapse-toggle{display:none}.ai-panel.is-collapsed .ai-panel-header{display:flex}.ai-panel.is-collapsed .ai-mode-switch{display:grid}.ai-panel.is-collapsed .ai-scroll{display:block}.ai-panel.is-collapsed .ai-input{display:flex}.ai-panel.is-open{transform:translate(0)}.app-shell.is-ai-open .ai-panel{z-index:1;width:auto;box-shadow:none;position:relative;transform:none}.ai-close,.mobile-only{display:inline-grid}.course-switcher-trigger{width:100%}.course-switcher-label{display:none}}@media (width<=900px){.external-source-import{grid-template-columns:repeat(2,minmax(0,1fr))}.external-source-import>input,.external-source-heading{grid-column:1/-1}.onboarding-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.app-shell{--nav-width:66px;grid-template-columns:var(--nav-width) minmax(0, 1fr)}.app-shell.is-ai-open{grid-template-columns:66px minmax(0,1fr)}.app-shell.is-ai-open .ai-panel{z-index:15;width:min(355px,94vw);box-shadow:var(--shadow);position:fixed;top:0;right:0;transform:translate(0)}.course-panel{width:min(300px,90vw);transform:translate(-105%)}.course-panel.is-open{transform:translate(0)}.topbar{padding-inline:18px}.course-switcher-trigger{width:100%}.topbar-context{display:none}.mobile-brand{color:var(--text);gap:9px;font-size:13px;font-weight:850;display:flex}.mobile-brand .icon-button{width:32px;height:32px}.search-button{justify-content:center;width:35px;min-width:auto;padding:0}.search-button span,.search-button kbd{display:none}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.diagnostic-result-metrics,.diagnostic-answer-compare,.diagnostic-content,.practice-bottom-grid,.settings-layout,.study-page-grid,.study-concepts{grid-template-columns:1fr}.plan-task{grid-template-columns:32px minmax(0,1fr)}.task-progress,.task-actions{grid-column:2}.task-progress{max-width:220px}.material-insight{grid-template-columns:48px minmax(0,1fr);align-items:flex-start}.material-insight-status{grid-column:2;justify-content:flex-start;max-width:100%}.material-preview-modal{width:min(100%,900px)}}@media (width<=640px){.external-source-import{grid-template-columns:minmax(0,1fr)}.external-source-import>input,.external-source-heading{grid-column:auto}.external-source-review header,.external-source-review footer{flex-direction:column;align-items:stretch}.app-shell{padding-bottom:69px;display:block}.main-navigation{z-index:14;overscroll-behavior:auto;border-top:1px solid var(--line);background:var(--surface);border-right:0;grid-template-columns:repeat(5,1fr);height:auto;min-height:65px;padding:6px 5px;display:grid;position:fixed;bottom:0;left:0;right:0;overflow:visible;box-shadow:0 -5px 18px #83334d14}.brand-button,.nav-bottom,.nav-item:first-of-type,.nav-item:nth-of-type(2){display:none}.nav-section{display:contents}.nav-item{border-radius:7px;gap:2px;min-height:49px;font-size:10px}.nav-item:nth-of-type(n+6){display:none}.topbar{gap:8px;min-height:62px;padding-inline:12px}.topbar-actions{gap:6px}.desktop-only{display:none}.course-switcher,.course-switcher-trigger{width:126px}.course-switcher-trigger{padding-inline:8px}.course-switcher-menu{width:auto;position:fixed;top:68px;left:12px;right:12px}.mobile-brand span{display:none}.module-page{padding:22px 13px 26px}.settings-panel{padding:14px}.provider-grid,.model-form-grid{grid-template-columns:1fr}.knowledge-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.settings-field-wide{grid-column:auto}.settings-actions{flex-direction:column-reverse}.settings-actions button{width:100%}.overview-head,.page-heading-row{gap:13px;display:grid}.overview-head h1,.page-heading-row h1{font-size:25px}.overview-head>.primary-button,.page-heading-row>.secondary-button,.page-heading-row>.primary-button,.page-heading-row>.mock-chip,.page-heading-row>.practice-heading-actions{width:fit-content;margin:0}.practice-nav-backdrop{padding:12px}.practice-nav-modal{max-height:calc(100vh - 24px)}.plan-generation-status{grid-template-columns:auto minmax(0,1fr)}.plan-generation-actions{grid-column:1/-1;justify-content:stretch}.plan-generation-actions button{flex:1}.metric-grid{gap:8px}.metric-card{min-height:111px;padding:12px}.metric-card strong{font-size:23px}.diagnostic-result-metrics{gap:8px}.diagnostic-result-actions{flex-direction:column-reverse}.diagnostic-result-actions button{width:100%}.content-panel,.question-panel,.mock-workbench{padding:14px}.study-layout{grid-template-columns:1fr;gap:12px}.study-page-tabs{grid-template-columns:repeat(4,minmax(68px,1fr));padding-bottom:2px;overflow-x:auto}.study-page-tabs button{text-align:center;grid-template-columns:1fr;justify-items:center;min-width:68px;min-height:58px}.study-page-shell{min-height:0;padding:14px}.study-page-content{min-height:0;max-height:none;padding-right:0;overflow:visible}.study-page-controls{gap:8px}.study-page-controls button{flex:1;padding-inline:8px}.panel-heading{align-items:flex-start}.panel-heading h2{font-size:16px}.knowledge-row{grid-template-columns:20px minmax(76px,1fr) 52px 28px}.knowledge-bar{display:none}.plan-task{gap:9px;min-height:0;padding:12px}.task-title-line{flex-wrap:wrap}.task-details p{white-space:normal}.task-progress{max-width:none}.timeline-summary{grid-template-columns:1fr 1fr;gap:12px;display:grid}.timeline-summary i{display:none}.timeline-summary button{grid-column:1/-1;margin:0}.question-panel h2{margin:18px 0;font-size:18px}.choice{align-items:flex-start}.choice span{font-size:12px}.question-panel>footer,.mock-workbench>footer{flex-direction:column-reverse}.question-panel>footer button,.mock-workbench>footer button{width:100%}.mock-start-card{margin-top:10px;padding:28px 17px}.mock-start-card h2{font-size:22px}.mock-meta-row{flex-direction:column;align-items:center;gap:7px}.mock-workbench header{display:grid}.exam-timer{width:fit-content}.error-summary{grid-template-columns:1fr}.error-summary div+div{border-top:1px solid var(--line);border-left:0}.error-row{grid-template-columns:minmax(0,1fr) 38px}.error-row-main{grid-template-columns:32px minmax(0,1fr);padding:12px}.error-open-icon{display:none}.error-row>.danger-icon-button{width:38px}.archive-row{grid-template-columns:32px minmax(0,1fr)}.archive-row>button{grid-column:2;width:fit-content}.material-insight{align-items:flex-start}.material-insight-status{grid-column:1/-1;justify-content:flex-start}.material-insight>button{display:none}.material-row{grid-template-columns:39px minmax(0,1fr);align-items:start;display:grid}.material-row>.material-actions{grid-column:2;justify-content:flex-start;min-width:0}.material-preview-backdrop{padding:12px}.material-preview-modal{height:calc(100vh - 24px)}.material-preview-header{grid-template-columns:39px minmax(0,1fr) 35px;gap:10px;display:grid}.material-preview-header .secondary-button{grid-column:2;width:fit-content}.material-preview-header .icon-button{grid-area:1/3}.material-preview-content{padding:10px}.material-frame-preview{min-height:520px}.material-sheet-preview header{display:grid}.mind-map-page{gap:10px}.mind-map-control-row,.mind-map-actions,.mind-map-filterbar{flex-direction:column;align-items:stretch}.mind-map-actions>*,.mind-map-filterbar button{width:100%}.mind-map-canvas-wrap{min-height:510px}.mind-map-popover{width:auto;max-width:none;max-height:42vh;inset:auto 10px 10px}.mind-map-floating-toolbar{left:10px;right:10px}.mind-map-floating-toolbar button{flex:1;padding-inline:8px}}.app-shell.is-material-preview-open,.app-shell.is-material-preview-open.is-ai-open,.app-shell.is-material-preview-open.is-ai-collapsed{grid-template-columns:var(--nav-width) minmax(0, 1fr) 0}.app-shell.is-material-preview-open .ai-panel{display:none}.app-shell.boot-shell{grid-template-columns:minmax(0,1fr);min-height:100dvh;padding-bottom:0;display:grid;overflow:hidden}.app-shell.boot-shell .main-area{grid-column:1;place-items:center;min-width:0;min-height:100dvh;padding:24px;display:grid;overflow:auto}.app-shell.boot-shell .empty-module{box-sizing:border-box;writing-mode:horizontal-tb;width:min(520px,100%);max-width:calc(100vw - 48px);margin:0;padding:clamp(26px,7vw,40px) clamp(18px,5vw,30px)}.app-shell.boot-shell .empty-module h1,.app-shell.boot-shell .empty-module p{writing-mode:horizontal-tb;text-align:center;width:100%}.strategy-review-page,.strategy-page{gap:16px;display:grid}.strategy-document-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;min-height:0;display:grid}.strategy-document-panel{border:1px solid var(--line);background:var(--surface);min-width:0;min-height:0;box-shadow:var(--shadow-subtle);border-radius:8px;grid-template-rows:auto minmax(0,1fr);display:grid;overflow:hidden}.strategy-document-panel>header,.strategy-document-panel>footer{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:13px 15px;display:flex}.strategy-document-panel>footer{border-top:1px solid var(--line);border-bottom:0}.strategy-document-panel>header>div:first-child{gap:3px;min-width:0;display:grid}.strategy-document-panel>header span,.strategy-document-panel>footer span{color:var(--text-muted);font-size:12px}.strategy-document-panel>header strong{overflow-wrap:anywhere;font-size:15px}.strategy-tab-bar{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 15px;display:flex}.strategy-tabs{flex-wrap:wrap;gap:6px;min-width:0;display:flex}.strategy-tab{min-width:0;color:var(--text-muted);font:inherit;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;align-items:center;gap:8px;padding:8px 14px;font-size:13px;font-weight:600;transition:background .16s,color .16s,border-color .16s;display:inline-flex}.strategy-tab:hover{color:var(--text);background:var(--surface-muted)}.strategy-tab.is-active{color:var(--primary-strong);background:var(--primary-soft);border-color:var(--line-strong)}.strategy-tab-meta{color:var(--text-soft);font-size:12px;font-weight:500}.strategy-tab-actions{align-items:center;gap:10px;min-width:0;display:flex}.strategy-prompt-message{color:var(--text-muted);overflow-wrap:anywhere;font-size:12px}.strategy-prompt-editor{box-sizing:border-box;width:100%;font:inherit;background:#ffffff61;border:0;outline:none;padding:18px 20px;font-family:Maple Mono NF CN,ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.75;overflow:hidden}:root[data-theme=dark] .strategy-prompt-editor{background:#07122a57}.strategy-mode-switch{border:1px solid var(--line);border-radius:6px;flex:none;grid-template-columns:1fr 1fr;display:inline-grid;overflow:hidden}.strategy-mode-switch button{min-width:52px;color:var(--text-muted);padding:6px 9px;font-size:12px}.strategy-mode-switch button.is-active{color:var(--primary-strong);background:var(--primary-soft)}.strategy-markdown-preview{overflow-wrap:anywhere;min-width:0;min-height:520px;padding:18px 20px;line-height:1.75;overflow:auto}.strategy-markdown-preview>:first-child{margin-top:0}.strategy-markdown-preview h1,.strategy-markdown-preview h2,.strategy-markdown-preview h3{letter-spacing:0;margin:1.2em 0 .55em}.strategy-markdown-preview h1{font-size:22px}.strategy-markdown-preview h2{font-size:17px}.strategy-markdown-preview h3{font-size:15px}.strategy-markdown-preview p,.strategy-markdown-preview ul,.strategy-markdown-preview ol{margin:.65em 0}.strategy-markdown-preview code{overflow-wrap:anywhere}.strategy-markdown-preview table{border-collapse:collapse;border:1px solid var(--line);table-layout:auto;width:100%;max-width:100%;margin:1em 0;font-size:13.5px;line-height:1.6;display:table}.strategy-markdown-preview thead th{background:var(--surface-strong);color:var(--text);letter-spacing:.01em;white-space:nowrap;font-weight:800}.strategy-markdown-preview th,.strategy-markdown-preview td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;overflow-wrap:anywhere;word-break:break-word;min-width:0;padding:9px 12px}.strategy-markdown-preview tbody tr:nth-child(2n){background:var(--surface-muted)}.strategy-markdown-preview tbody tr:last-child td{border-bottom:none}.strategy-markdown-preview td code,.strategy-markdown-preview th code{overflow-wrap:anywhere}.strategy-markdown-preview caption{color:var(--text-muted);margin-bottom:6px;font-size:12.5px}.mind-map-page{gap:16px;width:min(100%,1640px);padding:28px 24px 64px;display:grid}.mind-map-heading{margin-bottom:0;position:relative}.mind-map-control-row{justify-content:space-between;align-items:center;gap:14px;display:flex}.mind-map-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.mind-map-save-state{min-height:35px;color:var(--text-muted);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffffad;border:1px solid #ff4d782e;border-radius:8px;align-items:center;gap:6px;padding:0 12px;font-size:12px;font-weight:800;display:inline-flex;box-shadow:0 8px 20px #83334d0d}.mind-map-save-state.is-saved{color:var(--primary);border-color:color-mix(in srgb, var(--primary) 36%, transparent);background:color-mix(in srgb, var(--primary) 10%, transparent)}.mind-map-save-state.is-error{color:var(--primary);background:#ff4d781a;border-color:#ff4d786b}.mind-map-filterbar{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffff8a;border:1px solid #ff4d781f;border-radius:10px;flex-wrap:wrap;gap:8px;width:fit-content;max-width:100%;padding:5px;display:flex;box-shadow:0 10px 24px #83334d0d}.mind-map-filterbar button{min-height:33px;color:var(--text-muted);background:0 0;border:1px solid #0000;border-radius:7px;padding:0 13px;font-size:12px;font-weight:800}.mind-map-filterbar button.is-active,.mind-map-filterbar button:hover{color:var(--primary);background:linear-gradient(135deg,#fff0f4f5,#ffffffdb);border-color:#ff4d7833;box-shadow:0 8px 18px #83334d14}.mind-map-error{color:var(--primary);background:#ff4d781a;border:1px solid #ff4d785c;border-radius:8px;margin:0;padding:10px 12px;font-size:12px;font-weight:800}.mind-map-shell{grid-template-columns:minmax(0,1fr);gap:12px;min-height:min(690px,100dvh - 300px);display:grid}.mind-map-page.is-fullscreen{z-index:9999;background:var(--surface);border-radius:0;flex-direction:column;gap:12px;width:100%;max-width:none;height:100dvh;padding:16px 22px;display:flex;position:fixed;inset:0;overflow:hidden;box-shadow:0 30px 80px #83334d38}.mind-map-page.is-fullscreen .mind-map-shell{flex:1;min-height:0}.mind-map-page.is-fullscreen .mind-map-heading{display:none}.mind-map-page.is-fullscreen .mind-map-canvas-wrap{height:100%;min-height:0}.mind-map-fullscreen-toggle.is-active,.mind-map-fullscreen-toggle:hover{color:var(--primary);border-color:#ff4d7847}.mind-map-canvas-wrap{isolation:isolate;background:linear-gradient(90deg, #ff4d780f 1px, transparent 1px), linear-gradient(180deg, #ff4d780b 1px, transparent 1px), linear-gradient(135deg, #ffffffdb, #fff7fa94 46%, #effff975), var(--surface);background-size:48px 48px,48px 48px,auto;border:1px solid #ff4d7829;border-radius:8px;min-width:0;min-height:min(690px,100dvh - 300px);position:relative;overflow:hidden;box-shadow:0 22px 58px #83334d1a,inset 0 1px #ffffffb8}.mind-map-canvas-wrap:before{z-index:1;content:"";pointer-events:none;background:linear-gradient(90deg,#ff4d781a,#0000 18% 82%,#36b78314),linear-gradient(#ffffffb3,#0000 18% 78%,#ffffff85);position:absolute;inset:0;box-shadow:inset 0 0 0 1px #ffffff8a}:root[data-theme=dark] .mind-map-canvas-wrap{background:linear-gradient(90deg, #5e90ff1f 1px, transparent 1px), linear-gradient(180deg, #55c59a14 1px, transparent 1px), linear-gradient(135deg, #13244aeb, #09132bb8 48%, #0c2c3785), var(--surface);background-size:48px 48px,48px 48px,auto;border-color:#5e90ff3d;box-shadow:0 22px 58px #00000047,inset 0 1px #ffffff14}:root[data-theme=dark] .mind-map-canvas-wrap:before{background:linear-gradient(90deg,#5e90ff29,#0000 18% 82%,#55c59a1c),linear-gradient(#ffffff0d,#0000 18% 78%,#ffffff0a);box-shadow:inset 0 0 0 1px #ffffff14}.mind-map-flow{z-index:0;width:100%;height:100%;position:relative}.mind-map-node{--node-accent:var(--primary);--node-accent-soft:#ff4d7824;--node-fill-a:#fffffffa;--node-fill-b:#fff7faf0;--node-fill-c:#ffeff5e6;--node-hotspot:#ff81a02e;--node-border:#ff86a457;--node-shadow:#ff4d781f;--node-inner-line:#ffffffdb;--node-bg-image:none;--node-bg-position:center;--node-bg-size:100% 100%;width:198px;min-height:66px;color:var(--text);border:1px solid var(--node-border);background:linear-gradient(90deg, #ffffffdb 0 46%, #ffffff29), linear-gradient(135deg, #ff4d7814, #ffd2e20a), var(--node-bg-image), linear-gradient(135deg, #fff4f8eb, #ffe0ebd6);background-position:center, center, var(--node-bg-position), center;background-size:auto, auto, var(--node-bg-size), auto;background-blend-mode:normal, normal, normal, normal;box-shadow:0 14px 28px var(--node-shadow), 0 0 0 1px #ffffffad, inset 0 1px 0 var(--node-inner-line);border-radius:8px;gap:7px;padding:10px 12px 11px 16px;transition:border-color .16s,box-shadow .16s,filter .16s,transform .16s,background .16s;display:grid;position:relative}.mind-map-node:before{content:"";background:var(--node-accent);width:3px;box-shadow:0 0 14px var(--node-accent-soft);border-radius:999px;position:absolute;top:9px;bottom:9px;left:8px}:root[data-theme=dark] .mind-map-node{--node-accent:#28c8ff;--node-accent-soft:#28c8ff2e;--node-fill-a:#0d203ffa;--node-fill-b:#08142bf0;--node-fill-c:#051b2ee6;--node-hotspot:#28c8ff3d;--node-border:#28c8ff57;--node-shadow:#0000005c;--node-inner-line:#9fe7ff24;border-color:var(--node-border);background:linear-gradient(90deg, #020c20c7 0 46%, #020c202e), linear-gradient(135deg, #0071ffc7, #00e0ff75), var(--node-bg-image), linear-gradient(135deg, #030c21f5, #003c68db);background-position:center, center, var(--node-bg-position), center;background-size:auto, auto, var(--node-bg-size), auto;background-blend-mode:normal, color, luminosity, normal;box-shadow:0 15px 32px var(--node-shadow), 0 0 22px -12px #28c8ffc7, inset 0 1px 0 var(--node-inner-line)}.mind-map-node:hover{border-color:color-mix(in srgb, var(--node-accent) 58%, var(--line-strong));transform:translateY(-2px);box-shadow:0 18px 40px #ff4d782e,0 0 0 3px #ff4d781c,inset 0 1px #ffffffe6}:root[data-theme=dark] .mind-map-node:hover{box-shadow:0 18px 38px #00000061,0 0 0 3px #28c8ff2e,0 0 30px -10px #28c8ffd9,inset 0 1px #9fe7ff29}.mind-map-node.is-course{--node-accent:#ff6f96;--node-accent-soft:#ff6f962e;--node-fill-a:#fffafcc2;--node-fill-b:#ffe8f06b;--node-fill-c:#ffd6e43d;--node-hotspot:#ffe3ec52;--node-shadow:#ff6f9629;--node-bg-image:url(/mind-map-card-course.jpg);--node-bg-position:center;--node-bg-size:100% 100%;color:#6f2d45;background:linear-gradient(90deg, #fff7fae0 0 48%, #fff7fa52), linear-gradient(135deg, var(--node-fill-a), var(--node-fill-b) 54%, var(--node-fill-c)), var(--node-bg-image), linear-gradient(135deg, #fff4f8eb, #ffe0ebd6);background-position:center, center, var(--node-bg-position), center;background-size:auto, auto, var(--node-bg-size), auto;background-blend-mode:normal, normal, normal, normal;width:232px;min-height:70px;box-shadow:0 18px 42px var(--node-shadow), 0 0 0 1px #ffffffb8, inset 0 1px 0 #ffffffbd;border-color:#ff86a475}:root[data-theme=dark] .mind-map-node.is-course{--node-accent:#e7fbff;--node-accent-soft:#e7fbff33;--node-fill-a:#166cff8a;--node-fill-b:#13bfff5c;--node-fill-c:#00e5ff47;--node-hotspot:#ccf9ff66;color:#fff;background:linear-gradient(90deg, #0042b4d6 0 48%, #00d7ff33), linear-gradient(135deg, #0070ffc7, #00e5ff70), var(--node-bg-image), linear-gradient(135deg, #031232f0, #008fd6c7);background-position:center, center, var(--node-bg-position), center;background-size:auto, auto, var(--node-bg-size), auto;background-blend-mode:normal, color, luminosity, normal;border-color:#28c8ff57;box-shadow:0 18px 44px #0000006b,0 0 32px -8px #13d7ffdb,inset 0 1px #e7fbff47}.mind-map-node.is-chapter{--node-accent:#ff6f96;--node-accent-soft:#ff6f962e;--node-fill-a:#fff8fb47;--node-fill-b:#ffe2ed29;--node-fill-c:#ffd2e214;--node-hotspot:#ff6f9657;--node-border:#ff6f9680;--node-shadow:#ff6f962e;--node-bg-image:url(/mind-map-card-chapter.jpg);--node-bg-position:center;--node-bg-size:100% 100%;width:212px;min-height:68px}:root[data-theme=dark] .mind-map-node.is-chapter{--node-accent:#47d8ff;--node-accent-soft:#47d8ff33;--node-fill-a:#08365ed1;--node-fill-b:#07264abd;--node-fill-c:#05324eb3;--node-hotspot:#47d8ff5c;--node-border:#47d8ff85;--node-shadow:#00000061}.mind-map-node.is-knowledge{--node-accent:#f24f7d;--node-accent-soft:#f24f7d24;--node-fill-a:#ffffff3d;--node-fill-b:#fff4f81f;--node-fill-c:#ffe8f00a;--node-hotspot:#f24f7d38;--node-border:#f24f7d66;--node-shadow:#f24f7d1f;--node-bg-image:url(/mind-map-card-knowledge.jpg);--node-bg-position:center;--node-bg-size:100% 100%;width:202px;min-height:78px}.mind-map-node.is-wrongAnswer{--node-accent:#d9285b;--node-accent-soft:#d9285b29;--node-fill-a:#fffafcfa;--node-fill-b:#fff1f6f2;--node-fill-c:#ffe2ece6;--node-hotspot:#d9285b38;--node-border:#d9285b66}.mind-map-node.is-material{--node-accent:#ff9bb5;--node-accent-soft:#ff9bb526;--node-fill-a:#fffffffa;--node-fill-b:#fff6f9f2;--node-fill-c:#ffe8f0e6;--node-hotspot:#ff9bb538;--node-border:#ff9bb55c}.mind-map-node.is-task{--node-accent:#ff5d88;--node-accent-soft:#ff5d8829;--node-fill-a:#fffcfdfa;--node-fill-b:#fff2f7f2;--node-fill-c:#ffe4ede6;--node-hotspot:#ff5d883d;--node-border:#ff5d8861}.mind-map-node.is-question{--node-accent:#ff8aaa;--node-accent-soft:#ff8aaa26;--node-fill-a:#fffffffa;--node-fill-b:#fff7faf2;--node-fill-c:#ffe7efe6;--node-hotspot:#ff8aaa38;--node-border:#ff8aaa5c;width:196px;min-height:58px}.mind-map-node-tag{color:var(--node-accent);background:var(--node-accent-soft);border-radius:999px;justify-self:start;padding:1px 8px;font-size:11px;font-style:normal;font-weight:700}:root[data-theme=dark] .mind-map-node.is-knowledge{--node-accent:#2ea7ff;--node-accent-soft:#2ea7ff33;--node-fill-a:#082044cc;--node-fill-b:#061532b8;--node-fill-c:#061b3aad;--node-hotspot:#2ea7ff45;--node-border:#2ea7ff6b}:root[data-theme=dark] .mind-map-node.is-wrongAnswer{--node-accent:#5e90ff;--node-accent-soft:#5e90ff38;--node-fill-a:#0c254efa;--node-fill-b:#091734f2;--node-fill-c:#081e3aeb;--node-hotspot:#5e90ff47;--node-border:#5e90ff6b}:root[data-theme=dark] .mind-map-node.is-material{--node-accent:#40f0ff;--node-accent-soft:#40f0ff2e;--node-fill-a:#072b44fa;--node-fill-b:#051a30f2;--node-fill-c:#042638eb;--node-hotspot:#40f0ff42;--node-border:#40f0ff61}:root[data-theme=dark] .mind-map-node.is-task{--node-accent:#7ca7ff;--node-accent-soft:#7ca7ff33;--node-fill-a:#0d264ffa;--node-fill-b:#081835f2;--node-fill-c:#071f3deb;--node-hotspot:#7ca7ff45;--node-border:#7ca7ff66}:root[data-theme=dark] .mind-map-node.is-question{--node-accent:#38c6ff;--node-accent-soft:#38c6ff2e;--node-fill-a:#092446fa;--node-fill-b:#061832f2;--node-fill-c:#052238eb;--node-hotspot:#38c6ff42;--node-border:#38c6ff61}.mind-map-node.is-relation-selected{border-color:var(--node-accent);box-shadow:0 0 0 3px color-mix(in srgb, var(--node-accent) 20%, transparent), 0 20px 42px #ff4d7838, inset 0 1px 0 #ffffffe6}:root[data-theme=dark] .mind-map-node.is-relation-selected{box-shadow:0 0 0 3px #28c8ff38,0 16px 34px #00000061,0 0 34px -8px #28c8ffe6}.mind-map-node.is-relation-upstream{filter:saturate(1.06);border-color:#ff6f968f}.mind-map-node.is-relation-downstream{filter:saturate(1.06);border-color:#ff8aaa8a}:root[data-theme=dark] .mind-map-node.is-relation-upstream{border-color:#7ca7ff94}:root[data-theme=dark] .mind-map-node.is-relation-downstream{border-color:#28c8ff94}.mind-map-node.is-collapsed-node:after{content:"";pointer-events:none;border:1px dashed var(--line-strong);border-radius:11px;position:absolute;inset:-5px}.mind-map-node-collapse{width:22px;height:22px;color:var(--text-muted);cursor:pointer;background:#fff7fac7;border:1px solid #ff86a466;border-radius:6px;place-items:center;padding:0;display:grid;box-shadow:0 4px 10px #ff4d7814}.mind-map-node-collapse:hover{color:var(--primary);background:var(--primary-soft);border-color:#ff4d786b}.mind-map-node.is-course .mind-map-node-collapse{color:#e94271;background:#fffafcd1;border-color:#ff86a461}:root[data-theme=dark] .mind-map-node.is-chapter .mind-map-node-collapse{color:#d9f8ff;background:#28c8ff1f;border-color:#28c8ff47}:root[data-theme=dark] .mind-map-node-collapse{color:#aeeeff;background:#081a32d1;border-color:#28c8ff47;box-shadow:0 4px 12px #28c8ff1a}:root[data-theme=dark] .mind-map-node-collapse:hover{color:#e7fbff;background:#28c8ff24;border-color:#28c8ff85}.mind-map-node-topline{justify-content:flex-end;align-items:center;gap:8px;min-width:0;display:flex}.mind-map-node.is-kind-bucket{opacity:.78;border-style:dashed}.mind-map-node.is-kind-bucket:hover{opacity:1}.mind-map-node strong{color:inherit;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:14px;font-weight:850;line-height:1.34;display:-webkit-box;overflow:hidden}.mind-map-node.is-chapter strong{color:#7a243f}.mind-map-node.is-course strong{color:#6f2d45;text-shadow:0 1px #ffffff94}.mind-map-node.is-knowledge strong{color:#4b2b38}:root[data-theme=dark] .mind-map-node.is-chapter strong{color:#dffaff}:root[data-theme=dark] .mind-map-node.is-course strong{color:#fff;text-shadow:0 1px 10px #0017368c}:root[data-theme=dark] .mind-map-node.is-knowledge strong{color:#c9edff}.mind-map-handle{background:var(--node-accent);width:8px;height:8px;box-shadow:0 0 0 4px var(--node-accent-soft);border:0}.mind-map-edge{stroke:var(--line-strong);opacity:.72}.mind-map-edge path{stroke-width:1.4px;filter:drop-shadow(0 1px 2px #83334d14)}.mind-map-edge.is-structure path{stroke:#b6a3adc7}.mind-map-edge.is-knowledge path{stroke:var(--primary)}.mind-map-edge.is-task path{stroke:var(--violet)}.mind-map-edge.is-question path{stroke:var(--peach)}.mind-map-edge.is-material path{stroke:var(--mint)}.mind-map-edge.is-wrong path{stroke:var(--primary-strong)}.mind-map-edge.is-active path{stroke-width:3px;filter:drop-shadow(0 3px 7px var(--icon-glow))}.mind-map-edge-label{color:var(--text-muted);fill:var(--text-muted);font-size:9px;font-weight:850}.mind-map-edge-label.is-structure,.mind-map-edge-label.is-knowledge{color:var(--text-soft);fill:var(--text-soft);padding:2px 5px}.mind-map-floating-toolbar{z-index:5;pointer-events:none;flex-wrap:wrap;gap:8px;display:flex;position:absolute;top:14px;left:14px}.mind-map-floating-toolbar button{pointer-events:auto;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffd1;border-color:#ff4d7829;box-shadow:0 10px 24px #83334d14}:root[data-theme=dark] .mind-map-floating-toolbar button{background:#0e1a36db}.mind-map-level-control{z-index:5;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffd1;border:1px solid #ff4d7829;border-radius:11px;align-items:center;gap:2px;padding:4px;display:flex;position:absolute;top:14px;left:50%;transform:translate(-50%);box-shadow:0 10px 24px #83334d14}.mind-map-level-control-label{color:var(--text-muted);letter-spacing:1px;padding:0 8px 0 6px;font-size:10px;font-weight:900}.mind-map-level-control button{color:var(--text-muted);cursor:pointer;background:0 0;border:0;border-radius:8px;padding:6px 13px;font-size:12px;font-weight:700;transition:background .16s,color .16s,box-shadow .16s}.mind-map-level-control button:hover{color:var(--primary);background:var(--primary-soft)}.mind-map-level-control button.is-active{color:#fff;background:linear-gradient(135deg, var(--primary), var(--primary-strong));box-shadow:0 6px 14px #83334d3d}:root[data-theme=dark] .mind-map-level-control{background:#0e1a36db}:root[data-theme=dark] .mind-map-level-control button.is-active{box-shadow:0 6px 14px #0006}.mind-map-minimap{border:1px solid #ff4d7829;border-radius:8px;overflow:hidden;box-shadow:0 10px 26px #83334d14;background:#ffffffd1!important}.mind-map-flow .react-flow__minimap-mask{fill:#ff4d7814}.mind-map-flow .react-flow__controls{border:1px solid #ff4d7829;border-radius:8px;overflow:hidden;box-shadow:0 10px 24px #83334d14}.mind-map-flow .react-flow__controls-button{color:var(--text-muted);border-bottom-color:var(--line);background:#ffffffdb}.mind-map-flow .react-flow__controls-button:hover{color:var(--primary);background:var(--primary-soft)}.mind-map-popover{z-index:8;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffffdb;border:1px solid #ff4d782e;border-radius:10px;flex-direction:column;gap:13px;width:286px;min-width:0;max-width:calc(100% - 32px);max-height:calc(100% - 32px);padding:16px;display:flex;position:absolute;top:16px;right:16px;overflow:hidden;box-shadow:0 20px 48px #83334d29}:root[data-theme=dark] .mind-map-popover{background:#101930f5}.mind-map-popover-close{width:26px;height:26px;color:var(--text-muted);border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:7px;place-items:center;padding:0;display:grid;position:absolute;top:10px;right:10px}.mind-map-popover-close:hover{color:var(--primary);border-color:var(--line-strong);background:var(--primary-soft)}.mind-map-popover h2{overflow-wrap:anywhere;color:var(--text);margin:0;padding-right:30px;font-size:18px;line-height:1.35}.mind-map-popover p{color:var(--text-muted);margin:0;font-size:12px;line-height:1.7}.mind-map-popover dl{gap:8px;margin:0;display:grid}.mind-map-popover dl div{border-bottom:1px solid var(--line);grid-template-columns:56px minmax(0,1fr);gap:10px;padding-bottom:8px;display:grid}.mind-map-popover dt,.mind-map-popover dd{min-width:0;margin:0;font-size:12px}.mind-map-popover dt{color:var(--text-muted);font-weight:800}.mind-map-popover dd{overflow-wrap:anywhere;color:var(--text);font-weight:850}.mind-map-relation-list{gap:6px;min-width:0;display:grid}.mind-map-relation-list>strong{color:var(--text-muted);align-items:center;gap:5px;font-size:11px;display:inline-flex}.mind-map-relation-list button{text-align:left;cursor:pointer;background:#ffffff8f;border:1px solid #ebc9d5c7;border-radius:7px;gap:3px;min-width:0;padding:9px 10px;display:grid}.mind-map-relation-list button:hover{border-color:var(--line-strong);background:var(--primary-soft)}.mind-map-relation-list span{color:var(--text-soft);font-size:10px;font-weight:850}.mind-map-relation-list b{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.mind-map-popover-body{flex-direction:column;flex:auto;gap:13px;min-height:0;display:flex;overflow-y:auto}.mind-map-popover-relations{border-top:1px solid var(--line);flex-direction:column;flex:none;gap:12px;padding-top:12px;display:flex}.mind-map-popover-footer{flex-direction:column;flex:none;display:flex}.mind-map-popover.is-detail{width:360px}.mind-map-popover-header{flex-direction:column;gap:8px;display:flex}.mind-map-popover-header h2{margin:0;padding-right:30px;font-size:15px}.mind-map-popover-badges{flex-wrap:wrap;gap:6px;display:flex}.mind-map-badge{color:var(--text-muted);background:color-mix(in srgb, var(--primary) 8%, transparent);border:1px solid color-mix(in srgb, var(--primary) 20%, transparent);border-radius:999px;align-items:center;padding:2px 8px;font-size:11px;font-weight:700;display:inline-flex}.mind-map-badge.is-mastery.is-weak{color:var(--primary-strong);background:color-mix(in srgb, var(--primary) 16%, transparent);border-color:color-mix(in srgb, var(--primary) 38%, transparent)}.mind-map-detail{flex-direction:column;gap:10px;min-height:0;display:flex}.mind-map-popover-tabs{z-index:2;border:1px solid var(--line);background:#ffffffdb;border-radius:9px;gap:4px;padding:4px;display:flex;position:sticky;top:0}:root[data-theme=dark] .mind-map-popover-tabs{background:#101930f5}.mind-map-popover-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:7px;flex:1;justify-content:center;align-items:center;gap:5px;padding:6px 4px;font-size:12px;font-weight:700;transition:background .15s,color .15s,border-color .15s;display:inline-flex}.mind-map-popover-tab em{background:color-mix(in srgb, var(--primary) 16%, transparent);color:var(--primary-strong);border-radius:999px;padding:0 5px;font-size:10px;font-style:normal}.mind-map-popover-tab:hover{color:var(--text);background:color-mix(in srgb, var(--primary) 8%, transparent)}.mind-map-popover-tab.is-active{color:var(--primary-strong);background:color-mix(in srgb, var(--primary) 12%, transparent);border-color:color-mix(in srgb, var(--primary) 30%, transparent)}.mind-map-popover-tab-content,.mind-map-detail-section{flex-direction:column;gap:10px;display:flex}.mind-map-detail-lead{color:var(--text);margin:0;font-size:12.5px;line-height:1.6}.mind-map-detail-reason{color:var(--text-muted);background:color-mix(in srgb, var(--primary) 7%, transparent);border:1px solid color-mix(in srgb, var(--primary) 16%, transparent);border-radius:8px;align-items:flex-start;gap:6px;margin:0;padding:8px 10px;font-size:12px;line-height:1.55;display:flex}.mind-map-detail-point,.mind-map-detail-concept,.mind-map-detail-example{border:1px solid var(--line);background:color-mix(in srgb, var(--primary) 4%, transparent);border-radius:9px;flex-direction:column;gap:6px;padding:10px;display:flex}.mind-map-detail-point header,.mind-map-detail-example header{align-items:center;gap:8px;display:flex}.mind-map-detail-point header span,.mind-map-detail-example header span{width:22px;height:22px;color:var(--primary-strong);background:color-mix(in srgb, var(--primary) 14%, transparent);border-radius:6px;flex:none;justify-content:center;align-items:center;font-size:11px;font-weight:800;display:inline-flex}.mind-map-detail-point header strong,.mind-map-detail-example header strong{min-width:0;color:var(--text);overflow-wrap:anywhere;flex:1;font-size:13px}.mind-map-detail-point header em{color:var(--text-muted);background:color-mix(in srgb, var(--primary) 10%, transparent);border-radius:999px;padding:1px 6px;font-size:10px;font-style:normal;font-weight:700}.mind-map-detail-md{color:var(--text);overflow-wrap:anywhere;font-size:12.5px;line-height:1.6}.mind-map-detail-md p{margin:0 0 6px}.mind-map-detail-md p:last-child{margin-bottom:0}.mind-map-detail-md code{background:color-mix(in srgb, var(--primary) 12%, transparent);border-radius:4px;padding:1px 5px;font-size:11.5px}.mind-map-detail-meta{color:var(--text-soft);margin:0;font-size:11.5px}.mind-map-detail-formula{background:color-mix(in srgb, var(--primary) 8%, transparent);border-radius:6px;flex-direction:column;gap:2px;padding:6px 8px;display:flex}.mind-map-detail-formula code{color:var(--primary-strong);overflow-wrap:anywhere;font-size:12px}.mind-map-detail-formula span{color:var(--text-muted);font-size:11px}.mind-map-detail-inline-formula{color:var(--primary-strong);background:color-mix(in srgb, var(--primary) 10%, transparent);border-radius:4px;margin-top:2px;padding:1px 6px;font-size:12px;display:inline-block}.mind-map-detail-steps{color:var(--text);flex-direction:column;gap:3px;margin:0;padding-left:18px;font-size:12px;line-height:1.55;display:flex}.mind-map-detail-pitfalls,.mind-map-detail-checks{flex-direction:column;gap:3px;margin:0;padding-left:0;list-style:none;display:flex}.mind-map-detail-pitfalls li,.mind-map-detail-checks li{color:var(--text-muted);align-items:flex-start;gap:5px;font-size:11.5px;line-height:1.5;display:flex}.mind-map-detail-pitfalls li{color:var(--primary-strong)}.mind-map-detail-example-problem{background:color-mix(in srgb, var(--primary) 6%, transparent);border:1px solid color-mix(in srgb, var(--primary) 14%, transparent);border-radius:7px;padding:8px 10px}.mind-map-detail-example-analysis{color:var(--text-muted);margin:0;font-size:12px;line-height:1.55}.mind-map-detail-example-answer{color:var(--primary-strong);align-items:flex-start;gap:5px;margin:0;font-size:12.5px;font-weight:700;display:flex}.mind-map-detail-wrong{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.mind-map-detail-wrong li{border:1px solid var(--line);background:color-mix(in srgb, var(--primary) 4%, transparent);border-radius:8px;flex-direction:column;gap:3px;padding:8px 10px;display:flex}.mind-map-detail-wrong li.is-reviewed{opacity:.62}.mind-map-detail-wrong-head{align-items:center;gap:6px;display:flex}.mind-map-detail-wrong-head strong{min-width:0;color:var(--text);overflow-wrap:anywhere;flex:1;font-size:12.5px}.mind-map-detail-wrong-head em{color:var(--text-muted);background:color-mix(in srgb, var(--primary) 10%, transparent);border-radius:999px;padding:1px 6px;font-size:10px;font-style:normal;font-weight:700}.mind-map-detail-wrong-meta{flex-wrap:wrap;gap:5px;display:flex}.mind-map-detail-wrong-meta span{color:var(--text-soft);background:color-mix(in srgb, var(--primary) 6%, transparent);border-radius:999px;padding:1px 6px;font-size:10.5px}.mind-map-detail-more{color:var(--text-soft);margin:0;font-size:11px}.mind-map-detail-link{justify-content:center}.mind-map-detail-empty{text-align:center;color:var(--text-muted);flex-direction:column;align-items:center;gap:6px;padding:18px 10px;display:flex}.mind-map-detail-empty p{margin:0;font-size:12px;line-height:1.5}.mind-map-selection-pulse{z-index:2;pointer-events:none;background:linear-gradient(135deg,#ff4d782e,#36b7831a),#ffffff80;border:1px solid #ff4d782e;border-radius:50%;width:42px;height:42px;position:absolute;bottom:18px;right:18px;box-shadow:0 0 0 8px #ff4d780f,0 12px 28px #83334d1f}.mind-map-selection-pulse:before,.mind-map-selection-pulse:after{content:"";background:var(--primary);border-radius:999px;position:absolute}.mind-map-selection-pulse:before{inset:19px 9px}.mind-map-selection-pulse:after{inset:9px 19px}.strategy-review-actions{justify-content:space-between;align-items:center;gap:16px;padding:14px 0 4px;display:flex}.strategy-review-actions>span{color:var(--text-muted);font-size:13px}.strategy-generation-error{border:1px solid var(--border-color);background:var(--surface-primary);border-radius:8px;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:14px;padding:18px;display:grid}.strategy-generation-error>svg{color:var(--accent-warm)}.strategy-generation-error strong,.strategy-generation-error p{margin:0;display:block}.strategy-generation-error p{color:var(--text-secondary);margin-top:4px}@media (width<=900px){.strategy-review-page,.strategy-page{padding-bottom:calc(96px + env(safe-area-inset-bottom))}.strategy-page{grid-template-rows:none;height:auto}.strategy-document-grid{grid-template-columns:minmax(0,1fr);min-height:0}.strategy-document-panel textarea,.strategy-markdown-preview{min-height:420px}.strategy-review-actions{flex-direction:column;align-items:stretch}.strategy-generation-error{grid-template-columns:auto minmax(0,1fr)}.strategy-generation-error .secondary-button,.strategy-generation-error .primary-button{grid-column:1/-1;justify-content:center}}.today-time-panel{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:14px;flex-direction:column;gap:12px;margin-bottom:17px;padding:16px 18px;display:flex}.today-time-panel.is-over-budget{border-color:var(--peach)}.today-time-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.today-time-stat{gap:4px;display:grid}.today-time-stat span{color:var(--text-muted);font-size:12px}.today-time-stat strong{color:var(--text);font-size:18px}.today-time-bar{background:var(--primary-soft);border-radius:999px;height:10px;position:relative}.today-time-bar i{background:linear-gradient(90deg, var(--primary), var(--peach));border-radius:999px;height:100%;transition:width .3s;display:block}.today-time-panel.is-over-budget .today-time-bar i{background:linear-gradient(90deg, var(--peach), #ffb27a)}.today-time-bar em{color:var(--peach);font-size:12px;font-style:normal;position:absolute;top:14px;right:0}.today-time-warning{color:var(--primary-strong);align-items:center;gap:6px;margin:0;font-size:13px;display:flex}.today-time-panel>button{align-self:flex-start}.topbar-course-timer{border:1px solid var(--line-strong);background:var(--primary-soft);color:var(--primary-strong);border-radius:999px;flex:none;align-items:center;gap:4px;padding:4px 10px;font-size:13px;display:flex;transform:translate(-10px)}.topbar-course-timer.is-paused{background:var(--surface-strong);color:var(--text-muted);border-color:var(--line)}.tct-start,.tct-toggle,.tct-icon-btn{color:inherit;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;display:inline-flex}.tct-start{white-space:nowrap;gap:4px;padding:2px;font-weight:600}.tct-toggle,.tct-icon-btn{border-radius:999px;width:24px;height:24px}.tct-toggle:hover,.tct-icon-btn:hover{background:color-mix(in srgb, var(--primary) 16%, transparent);color:var(--primary-strong)}.topbar-course-timer.is-paused .tct-toggle:hover{color:var(--primary)}.tct-time{font-variant-numeric:tabular-nums;color:var(--primary-strong);text-align:center;min-width:38px;font-weight:600}.topbar-course-timer.is-paused .tct-time{color:var(--text)}.tct-course{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;max-width:96px;font-size:11px;overflow:hidden}.app-shell.is-ai-open .topbar{gap:12px}.app-shell.is-ai-open .topbar-actions{gap:6px}.app-shell.is-ai-open .course-switcher{flex:0 140px}.app-shell.is-ai-open .course-switcher-label{display:none}.task-timer{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.timer-toggle{border:1px solid var(--line-strong);background:var(--surface-strong);color:var(--primary-strong);cursor:pointer;border-radius:999px;align-items:center;gap:5px;padding:5px 10px;font-size:12px;display:inline-flex}.timer-toggle.is-running{background:var(--primary);border-color:var(--primary);color:#fff}.timer-spent{color:var(--text-muted);align-items:center;gap:4px;font-size:12px;display:inline-flex}.timer-backfill{border:1px dashed var(--line-strong);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:999px;align-items:center;gap:4px;padding:5px 10px;font-size:12px;display:inline-flex}.timer-backfill-form{align-items:center;gap:6px;display:inline-flex}.timer-backfill-form input{border:1px solid var(--line-strong);background:var(--bg);width:64px;color:var(--text);border-radius:8px;padding:4px 6px;font-size:12px}.timer-backfill-confirm{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:4px 10px;font-size:12px}.rebalance-proposals{gap:12px;margin-bottom:17px;display:grid}.rebalance-proposal{border:1px solid var(--line);border-left:4px solid var(--primary);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:12px;gap:10px;padding:16px 18px;display:grid}.rebalance-badge{color:var(--primary-strong);align-items:center;gap:5px;font-size:12px;display:inline-flex}.rebalance-proposal h4{color:var(--text);margin:4px 0 0;font-size:15px}.rebalance-body p{color:var(--text-muted);margin:0;font-size:13px;line-height:1.6}.rebalance-body strong{color:var(--text)}.rebalance-delta{color:var(--mint)}.rebalance-proposal footer{justify-content:flex-end;gap:10px;display:flex}.adjust-plan-dialog{border:1px solid var(--line);background:var(--bg);width:min(100%,560px);max-height:85vh;box-shadow:var(--shadow);border-radius:14px;flex-direction:column;padding:22px;display:flex}.adjust-plan-head{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px;display:flex}.adjust-plan-head h2{color:var(--text);margin:0;font-size:18px}.adjust-plan-head p{color:var(--text-muted);margin:4px 0 0;font-size:12px}.adjust-plan-dialog .icon-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none}.adjust-plan-body{flex-direction:column;gap:16px;padding-right:4px;display:flex;overflow-y:auto}.adjust-plan-group,.adjust-plan-pull{gap:8px;display:grid}.adjust-plan-group-title{color:var(--text-muted);font-size:12px}.adjust-plan-empty{color:var(--text-soft);margin:0;font-size:13px}.adjust-plan-row{border:1px solid var(--line);background:var(--surface);border-radius:10px;align-items:center;gap:10px;padding:10px 12px;display:flex}.adjust-plan-row.is-removed{opacity:.5;background:0 0}.adjust-plan-remove input{width:16px;height:16px;accent-color:var(--primary)}.adjust-plan-row-title{flex:1;gap:2px;min-width:0;display:grid}.adjust-plan-row-title strong{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.adjust-plan-row-title small{color:var(--text-muted);font-size:11px}.adjust-plan-field{color:var(--text-muted);gap:2px;font-size:11px;display:grid}.adjust-plan-field input{border:1px solid var(--line-strong);background:var(--bg);width:64px;color:var(--text);border-radius:8px;padding:4px 6px;font-size:13px}.adjust-plan-pull-row{align-items:center;gap:8px;display:flex}.adjust-plan-pull-row select{border:1px solid var(--line-strong);background:var(--bg);min-width:0;color:var(--text);border-radius:8px;flex:1;padding:6px 8px;font-size:13px}.adjust-plan-actions{justify-content:space-between;align-items:center;gap:10px;margin-top:16px;display:flex}.adjust-plan-actions-right{gap:8px;margin-left:auto;display:flex}@media (width<=640px){.today-time-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.adjust-plan-row{flex-wrap:wrap}}@media (width<=900px){.mind-map-shell{grid-template-columns:minmax(0,1fr);min-height:0}.mind-map-canvas-wrap{min-height:560px}}.selection-to-note-toolbar{z-index:1200;animation:.14s ease-out selection-to-note-in;position:fixed;transform:translate(-50%)}.selection-to-note-toolbar button{color:#9a4a5d;letter-spacing:.2px;white-space:nowrap;cursor:pointer;background:linear-gradient(135deg,#f8c8d4 0%,#fcd6bd 100%);border:1px solid #ffffffa6;border-radius:999px;align-items:center;gap:6px;padding:8px 15px;font-size:13px;font-weight:700;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex;box-shadow:0 10px 22px #c4829647,inset 0 1px #ffffff8c}.selection-to-note-toolbar button:hover{background:linear-gradient(135deg,#f9d2dc 0%,#fddcc6 100%);transform:translateY(-1px);box-shadow:0 14px 28px #c4829657,inset 0 1px #fff9}.selection-to-note-toolbar button:active{transform:translateY(0)}.selection-to-note-toolbar button.is-done{color:#2f6450;background:linear-gradient(135deg,#c4e8d8 0%,#d6efdd 100%);box-shadow:0 10px 22px #78aa8c42,inset 0 1px #ffffff8c}:root[data-theme=dark] .selection-to-note-toolbar button{color:#383a86;background:linear-gradient(135deg,#cbc4ef 0%,#bfd3f0 100%);border-color:#ffffff59;box-shadow:0 12px 26px #14183c8c,inset 0 1px #ffffff73}:root[data-theme=dark] .selection-to-note-toolbar button.is-done{color:#2c5e4c;background:linear-gradient(135deg,#bfe3d4 0%,#c6e6dc 100%);box-shadow:0 12px 26px #08282080,inset 0 1px #fff6}@keyframes selection-to-note-in{0%{opacity:0;transform:translate(-50%)translateY(4px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.planning-page{gap:16px;display:grid}.planning-toolbar{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.planning-month-label{text-align:center;min-width:124px;color:var(--text);font-size:14px;font-weight:700}.planning-summary{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);color:var(--text-muted);border-radius:12px;flex-wrap:wrap;gap:8px 20px;padding:12px 16px;font-size:13px;display:flex}.planning-summary b{color:var(--text);font-weight:700}.planning-calendar{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:14px;gap:8px;padding:16px;display:grid}.planning-weekdays,.planning-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;display:grid}.planning-weekday{text-align:center;color:var(--text-soft);padding:4px 0;font-size:12px;font-weight:700}.planning-day-cell{border:1px solid var(--line);background:var(--surface-muted);cursor:pointer;border-radius:10px;flex-direction:column;gap:4px;min-height:104px;padding:8px 8px 10px;transition:transform .14s,box-shadow .14s,border-color .14s;display:flex;position:relative}.planning-day-cell:not(.is-muted):hover{box-shadow:var(--shadow-subtle);transform:translateY(-1px)}.planning-day-cell.is-muted{opacity:.38;background:0 0}.planning-day-num{color:var(--text-muted);font-size:13px;font-weight:700}.planning-day-cell:not(.is-muted) .planning-day-num{color:var(--text)}.planning-day-cell.is-today{border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb, var(--primary) 45%, transparent)}.planning-legend{color:var(--text-muted);flex-wrap:wrap;gap:10px 18px;padding:4px 2px;font-size:12px;display:flex}.planning-legend span{align-items:center;gap:6px;display:inline-flex}.planning-legend-dots{background:linear-gradient(90deg, var(--peach) 0 33%, var(--primary) 33% 66%, var(--mint) 66% 100%);border-radius:3px;width:16px;height:10px}.planning-legend-exam{background:#ff3b5c;border-radius:3px;width:14px;height:10px}.planning-legend-today{background:var(--primary);border-radius:999px;width:12px;height:12px}.planning-entry-list{flex-direction:column;gap:3px;min-width:0;display:flex}.planning-course-chip{background:var(--surface);border:1px solid color-mix(in srgb, var(--course-color,var(--primary)) 35%, transparent);min-height:20px;color:var(--text);border-radius:6px;align-items:center;gap:5px;padding:1px 6px 1px 4px;font-size:11px;line-height:1.3;display:flex;overflow:hidden}.planning-course-bar{background:var(--course-color,var(--primary));border-radius:2px;flex:none;align-self:stretch;width:3px}.planning-course-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.planning-course-min{color:var(--text-muted);font-variant-numeric:tabular-nums;flex:none;font-size:10px}.planning-exam-chip{color:#fff;letter-spacing:.3px;background:#ff3b5c;border-radius:6px;align-items:center;min-height:20px;padding:1px 7px;font-size:10px;font-weight:700;display:flex;overflow:hidden}:root[data-theme=dark] .planning-exam-chip{background:#ff5b7a}.planning-day-cell .planning-day-num.is-today{background:var(--primary);color:#fff;border-radius:999px;justify-content:center;align-items:center;width:22px;height:22px;padding:0;font-size:12px;display:inline-flex}.planning-day-cell.is-selected{border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb, var(--primary) 60%, transparent)}.planning-task-overflow{color:var(--text-muted);padding-left:7px;font-size:10px}.planning-summary-loading{color:var(--text-muted);align-items:center;gap:5px;display:inline-flex}.planning-summary-spinner{animation:.9s linear infinite planning-spin}@keyframes planning-spin{to{transform:rotate(360deg)}}.planning-day-invest{background:color-mix(in srgb, var(--primary) 16%, transparent);border-radius:999px;height:4px;margin-top:auto;position:relative;overflow:hidden}.planning-day-invest-fill{background:var(--primary);border-radius:999px;height:100%;transition:width .16s;position:absolute;top:0;bottom:0;left:0}.planning-day-invest[data-over=true]{background:color-mix(in srgb, var(--peach) 22%, transparent)}.planning-day-invest[data-over=true] .planning-day-invest-fill{background:var(--peach)}.planning-summary-warn,.planning-summary-warn b{color:var(--peach)}.planning-day-detail{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:12px;gap:10px;padding:14px 16px;display:grid}.planning-day-detail-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.planning-day-detail-title h3{color:var(--text);margin:0;font-size:15px;font-weight:700}.planning-day-detail-title p{color:var(--text-muted);margin:4px 0 0;font-size:12px}.planning-day-detail-title b{color:var(--text);font-weight:700}.planning-day-detail-list{gap:8px;margin:0;padding:0;list-style:none;display:grid}.planning-day-detail-task{border:1px solid var(--line);background:var(--surface-muted);border-radius:9px;flex-direction:column;align-items:flex-start;gap:4px;padding:10px 12px;display:flex}.planning-day-detail-desc{color:var(--text-muted);margin:0;font-size:12px;line-height:1.5}@media (width<=720px){.planning-day-cell{min-height:84px;padding:6px}.planning-course-chip,.planning-exam-chip{min-height:18px;padding:1px 5px 1px 3px;font-size:10px}.planning-course-min{font-size:9px}.planning-day-detail-task{padding:8px 10px}}:root[data-theme=dark] .planning-day-detail-task{background:color-mix(in srgb, var(--primary) 8%, var(--surface))}.strategy-section{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-subtle);border-radius:14px;gap:12px;margin-top:4px;padding:16px;display:grid}.strategy-section-head{cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:10px;justify-content:space-between;align-items:center;gap:12px;margin:-2px -4px;padding:2px 4px;transition:background-color .12s;display:flex}.strategy-section-head:hover{background:var(--surface-hover,#00000008)}.strategy-section-head:focus-visible{outline:2px solid var(--accent,#4f8cff);outline-offset:2px}.strategy-section-head-text{min-width:0}.strategy-section-toggle{color:var(--text-muted);border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:999px;flex:none;align-items:center;gap:4px;padding:6px 12px;font-size:12px;font-weight:600;transition:color .12s,border-color .12s,background-color .12s;display:inline-flex}.strategy-section-toggle:hover{color:var(--text);border-color:var(--text-soft)}.strategy-section-chevron{transition:transform .16s}.strategy-section.is-expanded .strategy-section-chevron{transform:rotate(180deg)}.strategy-section-head h2{color:var(--text);align-items:center;gap:8px;font-size:16px;font-weight:700;display:flex}.strategy-section-head p{color:var(--text-muted);margin-top:4px;font-size:13px}.strategy-section-empty{text-align:center;border:1px dashed var(--line);color:var(--text-soft);border-radius:10px;padding:18px;font-size:13px}.strategy-document-grid .strategy-document-panel{height:clamp(440px,62vh,680px)}.strategy-document-grid .strategy-markdown-preview{min-height:0;max-height:none;overflow-y:auto}.strategy-document-grid .strategy-prompt-editor{height:100%;min-height:0;max-height:none;overflow-y:auto}