:root{--md-sys-color-primary:#6750a4;--md-sys-color-on-primary:#fff;--md-sys-color-background:#fffbfe;--md-sys-color-surface:#fff;--md-sys-color-surface-container:#f3edf7;--md-sys-color-secondary-container:#e8def8;--md-sys-color-on-secondary-container:#1d192b;--md-sys-color-outline:#79747e;--md-sys-color-error:#b3261e;--md-sys-color-text:#1c1b1f;--md-sys-color-text-variant:#49454f;--radius-pill:9999px;--radius-card:32px;--radius-container:48px;--sans:"Inter", system-ui, -apple-system, sans-serif;--heading:"Inter", system-ui, -apple-system, sans-serif;--mono:ui-monospace, Consolas, monospace;font:16px/1.5 var(--sans);color:var(--md-sys-color-text);background:var(--md-sys-color-background)}*{box-sizing:border-box}body{min-height:100vh;margin:0;transition:background-color .3s}#root{width:100%;min-height:100vh;margin:0 auto}h1,h2,h3,h4{font-family:var(--heading);color:var(--md-sys-color-text);margin:0}button{cursor:pointer;background:0 0;border:none;font-family:inherit;transition:transform .1s,background-color .2s}button:active,a:active,.interactive-card:active{transform:scale(.95)!important}a{color:inherit;text-decoration:none}.leaderboard-card{background-color:var(--md-sys-color-surface);border-radius:var(--radius-card);flex-direction:column;gap:20px;padding:24px;display:flex;box-shadow:0 4px 12px #0000000d}.leaderboard-header{justify-content:space-between;align-items:center;display:flex}.header-text h2{color:var(--md-sys-color-text);font-size:1.5rem;font-weight:600}.subtitle{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.05em;font-size:.875rem}.icon-button{border-radius:var(--radius-pill);width:48px;height:48px;color:var(--md-sys-color-text-variant);background-color:var(--md-sys-color-surface-container);justify-content:center;align-items:center;display:flex}.leaderboard-list{flex-direction:column;gap:8px;display:flex}.leaderboard-item{cursor:pointer;border-radius:20px;align-items:center;padding:12px 16px;transition:background-color .2s;display:flex}.leaderboard-item:hover{background-color:var(--md-sys-color-surface-container)}.leaderboard-item:active{transform:scale(.98)}.rank-container{justify-content:center;width:32px;display:flex}.rank-number{color:var(--md-sys-color-text-variant);font-size:1.1rem;font-weight:700}.rank-number.top-rank{color:var(--md-sys-color-primary)}.avatar-container{margin:0 12px}.avatar{border-radius:var(--radius-pill);background-color:var(--md-sys-color-secondary-container);width:44px;height:44px;color:var(--md-sys-color-on-secondary-container);justify-content:center;align-items:center;font-size:.9rem;font-weight:600;display:flex}.user-info{flex-direction:column;flex:1;display:flex}.user-name{color:var(--md-sys-color-text);font-weight:500}.status-indicator{gap:4px;font-size:.75rem;display:flex}.status-up{color:#2e7d32}.status-down{color:#d32f2f}.status-neutral{color:var(--md-sys-color-text-variant)}.score-info{text-align:right;flex-direction:column;display:flex}.score-value{color:var(--md-sys-color-primary);font-weight:700}.score-label{color:var(--md-sys-color-text-variant);font-size:.65rem;font-weight:700}.leaderboard-footer{justify-content:center;margin-top:8px;display:flex}.text-button{border-radius:var(--radius-pill);color:var(--md-sys-color-primary);background-color:#0000;padding:10px 24px;font-weight:600}.text-button:hover{background-color:var(--md-sys-color-secondary-container)}pre code.hljs{padding:1em;display:block;overflow-x:auto}code.hljs{padding:3px 5px}.hljs{color:#24292e;background:#fff}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#d73a49}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#6f42c1}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-variable,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id{color:#005cc5}.hljs-regexp,.hljs-string,.hljs-meta .hljs-string{color:#032f62}.hljs-built_in,.hljs-symbol{color:#e36209}.hljs-comment,.hljs-code,.hljs-formula{color:#6a737d}.hljs-name,.hljs-quote,.hljs-selector-tag,.hljs-selector-pseudo{color:#22863a}.hljs-subst{color:#24292e}.hljs-section{color:#005cc5;font-weight:700}.hljs-bullet{color:#735c0f}.hljs-emphasis{color:#24292e;font-style:italic}.hljs-strong{color:#24292e;font-weight:700}.hljs-addition{color:#22863a;background-color:#f0fff4}.hljs-deletion{color:#b31d28;background-color:#ffeef0}@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:"0.16.45"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;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 .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.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 .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{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 .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{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 .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.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 .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>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}.md-renderer-root{overflow-wrap:break-word;word-break:normal;width:100%;line-height:1.62}.md-renderer-root>:first-child{margin-top:0}.md-renderer-root>:last-child{margin-bottom:0}.md-renderer-root p{margin:0 0 .65rem}.md-renderer-root ul,.md-renderer-root ol{margin:.35rem 0 .65rem;padding-left:1.2rem}.md-renderer-root li+li{margin-top:.22rem}.md-renderer-root blockquote{color:#1e293be6;border-left:3px solid #94a3b8a6;margin:.4rem 0 .7rem;padding:.25rem .75rem}.md-renderer-root table{border-collapse:collapse;width:max-content;max-width:100%;margin:.35rem 0 .7rem;display:block;overflow-x:auto}.md-renderer-root th,.md-renderer-root td{text-align:left;border:1px solid #94a3b866;padding:.36rem .5rem}.md-renderer-root hr{border:0;border-top:1px solid #94a3b859;margin:.8rem 0}.md-renderer-root pre{max-height:min(38vh,13rem);margin:.35rem 0 .7rem;overflow:auto}.md-renderer-root pre code{white-space:pre;display:block}.md-renderer-root .katex-display{padding:.2rem 0;overflow:auto hidden}.md-renderer-mermaid{background-color:#f8fafce6;border:1px solid #94a3b859;border-radius:.75rem;width:100%;max-width:100%;max-height:min(38vh,13rem);padding:.6rem;overflow:auto}.md-renderer-mermaid svg{max-width:100%;height:auto;margin:0 auto;display:block}.md-renderer-mermaid-loading{color:#475569;text-align:center;border:1px dashed #94a3b899;border-radius:.75rem;padding:.75rem;font-size:.9rem;font-weight:600}.md-renderer-mermaid-fallback{background-color:#0f172a0a;border:1px solid #94a3b859;border-radius:.75rem;margin:0;padding:.75rem}.study-stack-section{background-color:var(--md-sys-color-surface-container);border-radius:2rem;padding:2rem;position:relative}.study-stack-section .section-header{justify-content:space-between;align-items:center;gap:1rem;display:flex}.study-stack-section .text-button{color:var(--md-sys-color-primary);cursor:pointer;background:0 0;border:none;border-radius:9999px;padding:.5rem .9rem;font-size:.95rem;font-weight:700;transition:background-color .2s}.study-stack-section .text-button:hover{background-color:var(--md-sys-color-secondary-container)}.single-card-container{justify-content:center;margin-top:1.5rem;display:flex}.preview-card{background-color:var(--md-sys-color-surface);border:2px solid var(--md-sys-color-outline);border-radius:1.5rem;width:min(100%,42rem);padding:1.5rem;transition:transform .25s,box-shadow .25s,border-color .25s;box-shadow:0 8px 20px #00000014}.preview-card:hover{border-color:var(--md-sys-color-primary);box-shadow:0 14px 28px #0000001f}.preview-card-content{flex-direction:column;gap:.85rem;display:flex}.card-topic-pill{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);letter-spacing:.04em;border-radius:9999px;align-items:center;width:fit-content;padding:.3rem .75rem;font-size:.72rem;font-weight:700;display:inline-flex}.card-preview-text{color:var(--md-sys-color-text);-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:3.8rem;font-size:1.35rem;font-weight:700;line-height:1.35;display:-webkit-box;overflow:hidden}.card-footer{justify-content:space-between;align-items:center;margin-top:.6rem;display:flex}.study-stack-section .card-meta{color:var(--md-sys-color-text-variant);font-size:.82rem;font-weight:500}.card-action-icon{background-color:var(--md-sys-color-primary);width:2.5rem;height:2.5rem;color:var(--md-sys-color-on-primary);border-radius:9999px;justify-content:center;align-items:center;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background-color:#1c1b1fb8;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-content{background-color:#0000;flex-direction:column;align-items:center;gap:1rem;width:100%;max-width:58rem;display:flex}.flashcard-preview-container{perspective:100rem;cursor:pointer;width:min(100%,54rem);height:min(78vh,44rem);min-height:34rem;margin-inline:auto;position:relative}.flashcard-inner{width:100%;height:100%;transform-style:preserve-3d;position:relative}.flashcard-front,.flashcard-back{backface-visibility:hidden;border:2px solid var(--md-sys-color-outline);background-color:var(--md-sys-color-surface);border-radius:1.5rem;flex-direction:column;justify-content:flex-start;align-items:center;width:100%;height:100%;padding:2.1rem 5.2rem 1.6rem;display:flex;position:absolute;overflow:hidden;box-shadow:0 10px 18px #0000001f}.flashcard-text-shell::-webkit-scrollbar{width:8px}.flashcard-text-shell::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--md-sys-color-text-variant) 35%, transparent);border-radius:4px}.flashcard-back{border-color:color-mix(in srgb, var(--md-sys-color-primary) 55%, var(--md-sys-color-outline));transform:rotateY(180deg)}.face-label{text-align:center;text-transform:uppercase;letter-spacing:.08em;width:100%;color:var(--md-sys-color-text-variant);flex-shrink:0;margin-bottom:.9rem;font-size:.95rem;font-weight:700;display:block}.topic-badge{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:9999px;justify-content:center;align-self:center;align-items:center;margin-bottom:1.25rem;padding:.35rem .8rem;font-size:.82rem;font-weight:700;display:inline-flex}.flashcard-text{text-align:center;width:100%;max-width:100%;font-size:var(--adaptive-font-size,clamp(1.35rem, 1.4vw + .85rem, 2.2rem));color:var(--md-sys-color-text);overflow-wrap:break-word;word-break:break-word;-webkit-hyphens:auto;hyphens:auto;margin:0;font-weight:580;line-height:1.52;display:block}.flashcard-content-shell{flex:1;width:100%;max-width:48rem;min-height:0;margin:0 auto;display:flex}.flashcard-content-shell.interactive{flex-direction:column;justify-content:flex-start;align-items:stretch;gap:.9rem}.interactive-question-shell{flex:1;width:100%;min-height:0;display:flex}.flashcard-content-shell.interactive .interactive-question-shell .flashcard-text-shell{justify-content:flex-start;align-items:flex-start}.response-block{border:1px solid color-mix(in srgb, var(--md-sys-color-outline) 82%, transparent);background:color-mix(in srgb, var(--md-sys-color-secondary-container) 20%, var(--md-sys-color-surface));border-radius:1rem;width:100%;max-height:42%;padding:.85rem .95rem;overflow-y:auto}.mcq-response-block{background:0 0;border:0;max-height:none;padding:0;overflow:visible}.mcq-options{border:0;flex-direction:column;gap:.75rem;margin:0;padding:0;display:flex}.mcq-options-grid{grid-template-columns:1fr;gap:.7rem;display:grid}.response-title{letter-spacing:.02em;color:var(--md-sys-color-text-variant);margin:0 0 .35rem;font-size:.86rem;font-weight:700}.mcq-option-button{border:2px solid color-mix(in srgb, var(--md-sys-color-outline) 78%, transparent);background:color-mix(in srgb, var(--md-sys-color-surface-container) 28%, var(--md-sys-color-surface));width:100%;color:var(--md-sys-color-text);text-align:left;cursor:pointer;border-radius:.8rem;justify-content:space-between;align-items:center;gap:.7rem;padding:.75rem .9rem;font-size:1rem;font-weight:600;transition:border-color .18s,background-color .18s,transform .14s;display:flex}.mcq-option-button:hover{border-color:color-mix(in srgb, var(--md-sys-color-primary) 65%, transparent);background:color-mix(in srgb, var(--md-sys-color-primary) 9%, var(--md-sys-color-surface));transform:translateY(-1px)}.mcq-option-button:active{transform:scale(.98)}.mcq-option-button:disabled{cursor:default}.mcq-option-button.selected{border-color:color-mix(in srgb, var(--md-sys-color-primary) 78%, transparent);background:color-mix(in srgb, var(--md-sys-color-primary) 14%, var(--md-sys-color-surface))}.mcq-option-button.correct{color:#16a34a;background:#16a34a1a;border-color:#16a34a}.mcq-option-button.incorrect{border-color:var(--md-sys-color-error,#b3261e);background:color-mix(in srgb, var(--md-sys-color-error,#b3261e) 10%, transparent);color:var(--md-sys-color-error,#b3261e)}.mcq-option-text{color:var(--md-sys-color-text);flex:1;font-size:.98rem;line-height:1.45}.mcq-option-prefix{letter-spacing:.01em;min-width:1.5rem;color:inherit;flex:none;font-size:.92rem;font-weight:800}.response-empty{color:var(--md-sys-color-text-variant);margin:0;font-size:.88rem}.mcq-feedback{border-left:4px solid #0000;border-radius:.6rem;margin:.1rem 0 0;padding:.65rem .8rem;font-size:.92rem;font-weight:700;line-height:1.4}.mcq-feedback.correct{color:#16a34a;background:#16a34a1a;border-left-color:#16a34a}.mcq-feedback.incorrect{color:var(--md-sys-color-error,#b3261e);background:color-mix(in srgb, var(--md-sys-color-error,#b3261e) 10%, transparent);border-left-color:var(--md-sys-color-error,#b3261e)}.text-response-shell{flex-direction:column;gap:.45rem;display:flex}.response-textarea{resize:vertical;border:1px solid var(--md-sys-color-outline);background-color:var(--md-sys-color-surface);width:100%;min-height:6rem;max-height:11.5rem;color:var(--md-sys-color-text);border-radius:.85rem;padding:.8rem .9rem;font-family:inherit;font-size:.97rem;line-height:1.45}.response-textarea:focus-visible{outline:2px solid color-mix(in srgb, var(--md-sys-color-primary) 70%, transparent);outline-offset:1px}.flashcard-text-shell{scrollbar-gutter:stable;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;padding:.15rem .4rem;display:flex;overflow:hidden auto}.flashcard-text-shell.overflowing{justify-content:flex-start;align-items:flex-start;padding-top:.35rem;padding-bottom:.35rem}.flashcard-text-shell.overflowing .flashcard-text{text-align:left;font-size:max(var(--adaptive-font-size,1rem), 1rem);line-height:1.58}.flashcard-text-shell.overflowing .flashcard-markdown h1,.flashcard-text-shell.overflowing .flashcard-markdown h2,.flashcard-text-shell.overflowing .flashcard-markdown h3,.flashcard-text-shell.overflowing .flashcard-markdown h4,.flashcard-text-shell.overflowing .flashcard-markdown h5,.flashcard-text-shell.overflowing .flashcard-markdown h6{text-align:left}.flashcard-text-shell.overflowing .flashcard-markdown ul,.flashcard-text-shell.overflowing .flashcard-markdown ol{max-width:100%;margin-left:0;margin-right:0}.flashcard-markdown>:first-child{margin-top:0}.flashcard-markdown>:last-child{margin-bottom:0}.flashcard-markdown p{margin:.6rem 0}.flashcard-markdown ul,.flashcard-markdown ol{text-align:left;max-width:92%;margin:.7rem auto;padding-left:1.5rem}.flashcard-markdown li{margin:.3rem 0}.flashcard-markdown h1,.flashcard-markdown h2,.flashcard-markdown h3,.flashcard-markdown h4,.flashcard-markdown h5,.flashcard-markdown h6{text-align:center;margin:.6rem 0;line-height:1.35}.flashcard-markdown code{font-family:var(--mono);background:color-mix(in srgb, var(--md-sys-color-secondary-container) 75%, var(--md-sys-color-surface));color:var(--md-sys-color-on-secondary-container);border-radius:.4rem;padding:.15rem .42rem;font-size:.92em}.flashcard-markdown pre{background:color-mix(in srgb, var(--md-sys-color-surface-container) 82%, var(--md-sys-color-surface));border-radius:.75rem;margin:.85rem 0;padding:.8rem;overflow-x:auto}.flashcard-markdown pre code{background:0 0;padding:0}.card-nav-pill{z-index:4;border:1px solid color-mix(in srgb, var(--md-sys-color-outline) 70%, #fff);background:color-mix(in srgb, var(--md-sys-color-surface) 84%, #fff);width:3.15rem;min-height:5.75rem;color:var(--md-sys-color-primary);letter-spacing:.02em;cursor:pointer;border-radius:1rem;justify-content:center;align-items:center;font-size:1rem;font-weight:800;transition:transform .16s,background-color .2s;display:inline-flex;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 8px 20px #0000001f}.card-nav-pill:hover{background:color-mix(in srgb, var(--md-sys-color-secondary-container) 38%, var(--md-sys-color-surface));transform:translateY(-50%)scale(1.04)}.card-nav-pill:active{transform:translateY(-50%)scale(.96)}.card-nav-left{left:.9rem}.card-nav-right{right:.9rem}.flip-hint{text-align:center;color:var(--md-sys-color-text-variant);background:linear-gradient(to bottom, color-mix(in srgb, var(--md-sys-color-surface) 0%, transparent) 0%, var(--md-sys-color-surface) 45%);width:min(100%,48rem);margin-top:auto;padding:.85rem 0 .35rem;font-size:.9rem;font-weight:600;position:sticky;bottom:-1px}.controls-footer{justify-content:space-between;align-items:center;gap:.75rem;width:100%;display:flex}.kb-hint{opacity:.7;background-color:var(--md-sys-color-surface-container);border-radius:.35rem;padding:.15rem .45rem;font-size:.75rem}.pill-button{cursor:pointer;border:none;border-radius:9999px;flex:1;justify-content:center;align-items:center;gap:.35rem;min-height:3.1rem;padding:.75rem 1.3rem;font-size:.95rem;font-weight:700;transition:transform .2s,background-color .2s,border-color .2s;display:inline-flex}.pill-button.primary{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);flex:1.4}.pill-button.secondary{color:var(--md-sys-color-primary);border:1px solid var(--md-sys-color-outline);background-color:#0000}.pill-button:hover{transform:scale(1.03)}.pill-button:active{transform:scale(.95)}@media (width<=768px){.study-stack-section{border-radius:1.5rem;padding:1.25rem}.card-preview-text{font-size:1.15rem}.flashcard-preview-container{height:min(76vh,34rem);min-height:28rem}.flashcard-front,.flashcard-back{padding:1.15rem 3.75rem 1rem}.flashcard-content-shell{max-width:100%}.response-block{max-height:45%;padding:.7rem .75rem}.response-textarea{min-height:5.25rem;max-height:9.25rem}.mcq-options-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.flashcard-text-shell{padding:0 .2rem}.card-nav-pill{width:2.45rem;min-height:4.8rem;font-size:.85rem}.card-nav-left{left:.6rem}.card-nav-right{right:.6rem}.controls-footer{flex-wrap:wrap}.pill-button{flex:calc(50% - .5rem)}.pill-button.primary{flex-basis:100%}}.side-rail{background-color:var(--md-sys-color-surface-container);z-index:100;border-right:1px solid #79747e1a;flex-direction:column;align-items:center;width:96px;height:100vh;padding:32px 0;display:none;position:fixed;top:0;left:0}@media (width>=1024px){.side-rail{display:flex}}.rail-logo{margin-bottom:48px}.logo-pill{background-color:var(--md-sys-color-primary);width:48px;height:48px;color:var(--md-sys-color-on-primary);border-radius:16px;justify-content:center;align-items:center;font-size:1.5rem;font-weight:900;display:flex;box-shadow:0 4px 12px #6750a433}.rail-actions{flex-direction:column;flex:1;align-items:center;gap:8px;width:100%;display:flex}.rail-item{width:72px;height:72px;color:var(--md-sys-color-text-variant);border-radius:20px;flex-direction:column;justify-content:center;align-items:center;gap:6px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.rail-item.active{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container)}.rail-item.active .rail-icon-wrapper{transform:scale(1.1)}.rail-item:hover:not(.active){background-color:#6750a414}.rail-label{letter-spacing:.02em;font-size:.7rem;font-weight:600}.rail-profile{margin-top:auto}.extras-trigger{width:72px;height:72px;color:var(--md-sys-color-text-variant);background:0 0;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;gap:6px;margin-bottom:16px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.extras-trigger:hover{background-color:#6750a414}.profile-pill{border-radius:var(--radius-pill);background-color:var(--md-sys-color-primary);width:48px;height:48px;color:var(--md-sys-color-on-primary);justify-content:center;align-items:center;font-weight:700;display:flex;box-shadow:0 4px 12px #0000001a}.profile-pill-button:active{transform:scale(.92)}.profile-pill-button:disabled,.dock-item.profile-trigger:disabled{opacity:.6;cursor:not-allowed;transform:none}.mobile-dock-container{z-index:1000;justify-content:center;transition:all .3s;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-dock-container.floating{padding:0 16px 16px}.mobile-dock-container.static{padding:0}@media (width>=1024px){.mobile-dock-container{display:none}}.mobile-dock{-webkit-backdrop-filter:blur(20px);background:#f3edf7d9;justify-content:space-around;align-items:center;width:100%;padding:12px 16px;transition:all .3s;display:flex}.mobile-dock-container.floating .mobile-dock{border:1px solid #ffffff80;border-radius:32px;max-width:500px;box-shadow:0 8px 32px #00000014}.mobile-dock-container.static .mobile-dock{border:none;border-top:1px solid #79747e33;border-radius:0;max-width:none;box-shadow:0 -4px 16px #0000000a}.dock-item{color:var(--md-sys-color-text-variant);border-radius:20px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:4px;padding:8px;transition:all .2s;display:flex}.dock-item.active{color:var(--md-sys-color-primary)}.dock-item.active .dock-icon-wrapper{background-color:var(--md-sys-color-secondary-container);border-radius:16px;justify-content:center;align-items:center;padding:6px 16px;display:flex}.dock-label{text-transform:uppercase;letter-spacing:.05em;font-size:.65rem;font-weight:700}.dock-divider{background-color:#79747e33;width:1px;height:24px;margin:0 8px}.dock-avatar{background-color:var(--md-sys-color-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:.75rem;font-weight:800;display:flex}.dashboard-container{background-color:var(--md-sys-color-background);min-height:100vh;color:var(--md-sys-color-text);transition:background-color .3s,color .3s;display:flex}@media (width>=1024px){.dashboard-container{padding-left:96px}.main-content{padding:64px 48px!important}}.main-content{flex:1;width:100%;max-width:1400px;margin:0 auto;padding:24px}.dashboard-alert{border:1px solid color-mix(in srgb, var(--md-sys-color-error) 40%, transparent);background:color-mix(in srgb, var(--md-sys-color-error) 10%, var(--md-sys-color-surface));color:var(--md-sys-color-text);border-radius:18px;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding:14px 18px;font-size:.92rem;display:flex}.alert-retry{border-radius:var(--radius-pill);color:var(--md-sys-color-on-primary);background:var(--md-sys-color-primary);flex:none;padding:8px 16px;font-weight:700}.main-content-bottom-spacer{height:100px}@media (width>=1024px){.main-content-bottom-spacer{display:none}}@media (width<=767px){.dashboard-alert{flex-direction:column;align-items:flex-start}.alert-retry{align-self:flex-start}}.page-header{flex-direction:column;gap:24px;margin-bottom:48px;display:flex}@media (width>=768px){.page-header{flex-direction:row;justify-content:space-between;align-items:center}}.logo-badge{background-color:var(--md-sys-color-primary);color:#fff;border-radius:16px;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:16px;font-size:1.5rem;font-weight:900;display:flex}@media (width>=1024px){.logo-badge{display:none}}.welcome-text h1{letter-spacing:-.02em;margin-bottom:8px;font-size:2.25rem;font-weight:700}.welcome-text p{color:var(--md-sys-color-text-variant);font-size:1.1rem}.search-bar{background-color:var(--md-sys-color-surface-container);border-radius:var(--radius-pill);align-items:center;width:100%;max-width:400px;padding:4px 4px 4px 20px;display:flex}.search-bar input{color:var(--md-sys-color-text);background:0 0;border:none;outline:none;flex:1;padding:8px 0;font-size:1rem}.search-button{border-radius:var(--radius-pill);background-color:var(--md-sys-color-primary);color:#fff;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.stats-section{gap:12px;margin-bottom:32px;display:flex}.stat-card{text-align:center;border-radius:20px;flex-direction:column;flex:1;align-items:center;gap:4px;min-width:0;padding:16px 8px;display:flex}.primary-stat{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary)}.secondary-stat{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container)}.stat-label{text-transform:uppercase;font-size:.65rem;font-weight:700}.stat-value{font-size:1.5rem;font-weight:800}@media (width>=768px){.stats-section{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.stat-card{text-align:left;border-radius:var(--radius-card);align-items:flex-start;padding:24px}.stat-value{font-size:2.5rem}}.content-layout{grid-template-columns:1fr;gap:32px;display:grid}@media (width>=1200px){.content-layout{grid-template-columns:1.8fr 1fr}}.surface-container{background-color:var(--md-sys-color-surface-container);padding:24px}.rounded-large{border-radius:var(--radius-container)}.section-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.section-header h3{font-size:1.25rem;font-weight:600}.mt-32{margin-top:32px}.mt-24{margin-top:24px}.course-list{flex-direction:column;gap:16px;display:flex}.course-item{background-color:var(--md-sys-color-surface);border-radius:24px;align-items:center;gap:16px;padding:16px;display:flex}.course-icon{color:#fff;border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;font-weight:700;display:flex}.bg-purple{background-color:#6750a4}.bg-blue{background-color:#0061a4}.course-details{flex-direction:column;flex:1;display:flex}.course-title{color:var(--md-sys-color-text);font-weight:600}.course-meta{color:var(--md-sys-color-text-variant);font-size:.8rem}.course-progress{flex-direction:column;align-items:flex-end;gap:4px;width:100px;display:flex}.progress-bar{background-color:var(--md-sys-color-secondary-container);border-radius:3px;width:100%;height:6px;overflow:hidden}.progress-fill{background-color:var(--md-sys-color-primary);border-radius:3px;height:100%}.progress-text{color:var(--md-sys-color-primary);font-size:.75rem;font-weight:700}.external-list{flex-direction:column;gap:12px;display:flex}.external-item{background-color:var(--md-sys-color-surface);border-radius:20px;align-items:center;gap:16px;padding:12px;transition:all .2s;display:flex}.external-item:hover{background-color:var(--md-sys-color-secondary-container);transform:translate(4px)}.external-icon{width:40px;height:40px;color:var(--md-sys-color-primary);border-radius:12px;justify-content:center;align-items:center;display:flex}.bg-secondary{background-color:var(--md-sys-color-secondary-container)}.external-info{flex-direction:column;display:flex}.external-title{font-size:.95rem;font-weight:600}.external-desc{color:var(--md-sys-color-text-variant);font-size:.8rem}.external-empty{background:color-mix(in srgb, var(--md-sys-color-secondary-container) 55%, transparent);color:var(--md-sys-color-text-variant);border-radius:16px;margin:0;padding:16px;font-size:.9rem;line-height:1.45}.achievement-card{background-color:var(--md-sys-color-surface);border-radius:24px;align-items:center;gap:16px;padding:20px;display:flex}.achievement-icon{font-size:2.5rem}.achievement-text{flex-direction:column;display:flex}.achievement-title{font-size:1.1rem;font-weight:700}.achievement-desc{color:var(--md-sys-color-text-variant);font-size:.875rem}.login-modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:2000;background-color:#1c1b1f66;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.login-modal-content{background-color:var(--md-sys-color-surface);border-radius:var(--radius-container);width:100%;max-width:400px;padding:32px;position:relative;box-shadow:0 10px 40px #00000026}.modal-close-icon{width:40px;height:40px;color:var(--md-sys-color-text-variant);border-radius:50%;justify-content:center;align-items:center;transition:background-color .2s;display:flex;position:absolute;top:20px;right:20px}.modal-close-icon:hover{background-color:var(--md-sys-color-surface-container)}.modal-header{text-align:center;margin-bottom:24px}.modal-logo{background-color:var(--md-sys-color-primary);width:44px;height:44px;color:var(--md-sys-color-on-primary);border-radius:14px;justify-content:center;align-items:center;margin:0 auto 16px;font-size:1.25rem;font-weight:800;display:flex}.modal-header h2{font-size:1.5rem;font-weight:700}.modal-header p{color:var(--md-sys-color-text-variant);font-size:.9rem}.modal-form{flex-direction:column;gap:16px;display:flex}.modal-error-message{color:#8f1d1d;background-color:#ffe8e8;border:1px solid #f3b9b9;border-radius:14px;margin:0;padding:12px 14px;font-size:.88rem}.modal-form .input-group input{background-color:var(--md-sys-color-surface-container);border-radius:var(--radius-pill);border:1px solid #0000;outline:none;width:100%;height:52px;padding:0 20px;font-size:.95rem;transition:all .2s}.modal-form .input-group input:focus{border-color:var(--md-sys-color-primary);background-color:var(--md-sys-color-surface)}.modal-submit-button{background-color:var(--md-sys-color-primary);color:#fff;border-radius:var(--radius-pill);height:52px;margin-top:8px;font-size:1rem;font-weight:700}.modal-submit-button:disabled,.modal-form .input-group input:disabled{opacity:.65;cursor:not-allowed}.modal-footer{text-align:center;color:var(--md-sys-color-text-variant);margin-top:24px;font-size:.9rem}.modal-link{color:var(--md-sys-color-primary);font-weight:700;text-decoration:none}.modal-link:hover{text-decoration:underline}.chat-page-main{flex-direction:column;height:100vh;display:flex;max-width:none!important;padding:0!important}@media (width>=1024px){.chat-page-main{padding:16px 24px!important}}.chat-layout{flex:1;gap:24px;width:100%;max-width:1600px;height:100%;margin:0 auto;display:flex;position:relative;overflow:hidden}.chat-content-area{flex-direction:column;flex:1;min-width:0;height:100%;display:flex}.chat-sidebar-wrapper{z-index:50;background-color:var(--md-sys-color-background);width:300px;height:100%;transition:transform .3s cubic-bezier(.4,0,.2,1);position:absolute;top:0;left:0;transform:translate(-100%)}.chat-sidebar-wrapper.open{transform:translate(0)}@media (width>=1024px){.chat-sidebar-wrapper{z-index:1;width:320px;transition:width .3s cubic-bezier(.4,0,.2,1),opacity .2s,margin-right .3s;position:relative;transform:none}.chat-sidebar-wrapper:not(.open){opacity:0;pointer-events:none;width:0;margin-right:-24px}}.chat-sidebar-backdrop{z-index:40;background-color:#0006;position:fixed;inset:0}@media (width>=1024px){.chat-sidebar-backdrop{display:none}}.chat-sidebar{border-radius:var(--radius-container);background-color:var(--md-sys-color-surface-container);height:100%;width:inherit;flex-direction:column;min-width:300px;padding:24px;display:flex}@media (width>=1024px){.chat-sidebar{min-width:320px}}.sidebar-header{justify-content:space-between;align-items:center;margin-bottom:32px;display:flex}.sidebar-brand{align-items:center;gap:12px;display:flex}.sidebar-brand .logo-badge{border-radius:12px;width:40px;height:40px;margin-bottom:0;font-size:1.2rem}.brand-text{font-size:1.25rem;font-weight:700}.icon-btn{border-radius:var(--radius-pill);width:40px;height:40px;color:var(--md-sys-color-text-variant);justify-content:center;align-items:center;transition:transform .1s,background-color .2s;display:flex}.icon-btn:hover{background-color:#79747e14}.icon-btn.primary{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary)}.icon-btn.primary:hover{transform:scale(1.05)}.icon-btn.danger{color:var(--md-sys-color-outline)}.icon-btn.danger:hover{color:#ef4444;background-color:#ef44441a}.sidebar-content{flex-direction:column;flex:1;gap:12px;display:flex;overflow-y:auto}.sidebar-label{text-transform:uppercase;letter-spacing:.1em;color:var(--md-sys-color-outline);margin-bottom:8px;font-size:.75rem}.sidebar-empty{color:var(--md-sys-color-text-variant);font-size:.9rem;font-style:italic}.history-list{flex-direction:column;gap:8px;display:flex}.history-item{border-radius:var(--radius-card);background-color:var(--md-sys-color-surface);cursor:pointer;align-items:center;gap:12px;padding:12px;transition:all .2s;display:flex}.history-item:hover{background-color:var(--md-sys-color-secondary-container)}.history-item.active{background-color:var(--md-sys-color-secondary-container);border:1px solid var(--md-sys-color-primary)}.history-icon{align-items:center;display:flex}.history-info{flex-direction:column;flex:1;display:flex;overflow:hidden}.history-title{white-space:nowrap;text-overflow:ellipsis;font-size:.9rem;font-weight:600;overflow:hidden}.history-mode{color:var(--md-sys-color-text-variant);font-size:.75rem}.chat-home{flex-direction:column;flex:1;justify-content:center;align-items:center;padding:24px;display:flex}.text-center{text-align:center}.welcome-text h1{margin-bottom:16px;font-size:2.5rem;font-weight:800}.welcome-text p{color:var(--md-sys-color-text-variant);max-width:500px;margin-bottom:48px;font-size:1.1rem}.modes-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;width:min(760px,100%);display:grid}@media (width<=700px){.modes-grid{grid-template-columns:1fr;width:min(420px,100%)}}.mode-card{text-align:center;border:2px solid #0000;flex-direction:column;align-items:center;padding:24px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.mode-card:hover{box-shadow:0 20px 40px -10px var(--hover-color,#0000001a);border-color:var(--hover-color,transparent);transform:translateY(-8px)scale(1.02)}.mode-card:hover .mode-icon-wrapper{transform:scale(1.1)rotate(6deg)}.mode-icon-wrapper{color:#fff;border-radius:18px;justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:16px;transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex}.mode-title{margin-bottom:6px;font-size:1.1rem;font-weight:700}.mode-desc{color:var(--md-sys-color-text-variant);font-size:.85rem}.chat-container{flex-direction:column;height:100%;padding:24px;display:flex}.chat-header{align-items:center;gap:16px;margin-bottom:24px;display:flex}.active-mode-badge{border-radius:var(--radius-pill);align-items:center;gap:8px;padding:8px 16px;font-size:.85rem;font-weight:700;display:inline-flex}.chat-messages{flex-direction:column;flex:1;gap:24px;padding-right:8px;display:flex;overflow-y:auto}.message-wrapper{gap:16px;max-width:85%;display:flex}.message-turn{flex-direction:column;gap:10px;display:flex}.message-wrapper.user{flex-direction:row-reverse;align-self:flex-end}.message-wrapper.scholar{align-self:flex-start}.message-avatar{background-color:var(--md-sys-color-surface);width:40px;height:40px;color:var(--md-sys-color-primary);border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.user .message-avatar{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary)}.message-bubble{border-radius:24px;padding:16px 20px;position:relative;box-shadow:0 2px 8px #0000000d}.user .message-bubble{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);border-top-right-radius:4px}.scholar .message-bubble{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border-top-left-radius:4px}.message-bubble p{white-space:pre-wrap;margin:0;font-size:1rem;line-height:1.5}.typing-indicator .dot{background-color:var(--md-sys-color-outline);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite typing}.typing-indicator .dot:first-child{animation-delay:0s}.typing-indicator .dot:nth-child(2){animation-delay:.2s}.typing-indicator .dot:nth-child(3){animation-delay:.4s}@keyframes typing{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.chat-input-wrapper{flex-direction:column;gap:8px;margin-top:24px;display:flex}.chat-command-hint{color:var(--md-sys-color-outline);margin:0;font-size:.75rem}.file-attachment-pill{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:var(--radius-pill);align-self:flex-start;align-items:center;gap:8px;padding:8px 16px;font-size:.85rem;font-weight:600;animation:.2s ease-out popIn;display:inline-flex}.file-name{white-space:nowrap;text-overflow:ellipsis;max-width:200px;overflow:hidden}.remove-file-btn{width:20px;height:20px;color:inherit;background-color:#0000001a;border-radius:50%;justify-content:center;align-items:center;transition:background-color .2s;display:flex}.remove-file-btn:hover{background-color:#0003}@keyframes popIn{0%{opacity:0;transform:scale(.95)translateY(4px)}to{opacity:1;transform:scale(1)translateY(0)}}.chat-input-area{background-color:var(--md-sys-color-surface);border-radius:28px;align-items:flex-end;gap:12px;padding:8px 8px 8px 16px;display:flex;box-shadow:0 4px 12px #0000000d}.attach-btn{color:var(--md-sys-color-outline);margin-bottom:4px}.autosize-textarea{color:var(--md-sys-color-text);resize:none;background:0 0;border:none;outline:none;flex:1;max-height:150px;padding:12px 0;font-family:inherit;font-size:1rem;line-height:1.5}.send-button{background-color:var(--md-sys-color-primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;transition:transform .1s,opacity .2s;display:flex}.send-button:disabled{background-color:var(--md-sys-color-outline);opacity:.5;cursor:not-allowed;transform:none}.send-button:not(:disabled):hover{transform:scale(1.05)}.send-button:not(:disabled):active{transform:scale(.95)}.tool-area{flex-direction:column;gap:8px;max-width:min(600px,78% - 56px);margin-left:56px;display:flex}.message-turn.user .tool-area{align-self:flex-end;margin-left:0;margin-right:56px}.tool-event{border:1px solid var(--md-sys-color-outline-variant);background-color:var(--md-sys-color-surface);border-radius:14px;padding:10px 12px}.tool-event-header{align-items:center;gap:10px;display:flex}.tool-event-icon{border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;display:flex}.tool-event-heading{flex-wrap:wrap;align-items:baseline;gap:8px;display:flex}.tool-event-heading strong{font-size:.85rem}.tool-event-status{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.tool-event-message,.tool-event-result,.tool-event-error{margin:6px 0 0;font-size:.8rem;line-height:1.4}.tool-event-title-row{justify-content:space-between;align-items:center;display:flex}.tool-event-title{letter-spacing:.01em;font-size:.84rem;font-weight:700}.tool-event-pending{color:var(--md-sys-color-text);margin:0}.tool-event-error{color:#dc2626}.tool-rich-result{flex-direction:column;gap:8px;margin-top:8px;display:flex}.quiz-result{max-width:500px;margin:0 auto}.cards-result{max-width:430px;margin:0 auto}.quiz-topline{justify-content:space-between;align-items:center;gap:8px;display:flex}.quiz-topline-content{flex-direction:column;min-width:0;display:flex}.quiz-title{font-size:.76rem;line-height:1.2}.quiz-subtitle{color:var(--md-sys-color-text-variant);white-space:nowrap;text-overflow:ellipsis;font-size:.65rem;overflow:hidden}.quiz-progress-track{background:color-mix(in srgb, var(--md-sys-color-outline) 24%, transparent);border-radius:999px;width:100%;height:6px;overflow:hidden}.quiz-progress-track span{border-radius:inherit;background:linear-gradient(90deg,#0284c7 0%,#0ea5a4 100%);height:100%;transition:width .25s;display:block}.quiz-progress-caption{color:var(--md-sys-color-text-variant);margin:0;font-size:.63rem}.quiz-card-stack{margin-top:2px;position:relative}.quiz-card-layer,.quiz-card-layer-back-1,.quiz-card-layer-back-2{display:none}.quiz-card-surface{border:1px solid color-mix(in srgb, var(--md-sys-color-outline) 42%, transparent);color:#0f172a;background:#fff;border-radius:12px;padding:10px;position:relative;box-shadow:0 5px 14px #02061712}.quiz-card-header{justify-content:space-between;align-items:center;gap:5px;margin-bottom:8px;display:flex}.quiz-question-pill,.quiz-type-pill{letter-spacing:.03em;text-transform:uppercase;border-radius:999px;align-items:center;padding:3px 8px;font-size:.6rem;font-weight:700;display:inline-flex}.quiz-question-pill{color:#075985;background:#0284c71f}.quiz-type-pill{color:#115e59;background:#0ea5a424}.quiz-question-prompt{color:#0f172a;margin:0;font-size:.82rem;font-weight:700;line-height:1.4}.quiz-options-grid{gap:7px;margin-top:8px;display:grid}.quiz-option-button{color:#0f172a;text-align:left;background:#fffffff2;border:1px solid #3341553d;border-radius:9px;grid-template-columns:auto 1fr auto;align-items:center;gap:7px;width:100%;padding:8px 9px;transition:transform .12s,border-color .18s,box-shadow .18s;display:grid}.quiz-option-button:not(:disabled):hover{border-color:#0e74908c;transform:translateY(-1px);box-shadow:0 6px 14px #0f172a14}.quiz-option-button:disabled{cursor:default}.quiz-option-button.selected{background:#0e749014;border-color:#0e74909e}.quiz-option-button.correct{background:#16a34a1f;border-color:#16a34a}.quiz-option-button.incorrect{background:#dc26261c;border-color:#dc2626}.quiz-option-key{background:#0f172a14;border-radius:999px;justify-content:center;align-items:center;width:22px;height:22px;font-size:.62rem;font-weight:800;display:inline-flex}.quiz-option-text{font-size:.74rem;font-weight:600;line-height:1.35}.quiz-option-mark{letter-spacing:.02em;text-transform:uppercase;color:#334155;font-size:.58rem;font-weight:700}.quiz-feedback{border:1px solid #0000;border-radius:8px;flex-direction:column;gap:2px;margin-top:8px;padding:7px 8px;display:flex}.quiz-feedback strong{font-size:.7rem}.quiz-feedback span,.quiz-feedback p{margin:0;font-size:.66rem;line-height:1.3}.quiz-feedback.correct{color:#166534;background:#16a34a1c;border-color:#16a34a61}.quiz-feedback.incorrect{color:#991b1b;background:#dc26261a;border-color:#dc26265c}.tool-inline-controls{flex-wrap:wrap;gap:8px;display:flex}.tool-mini-btn{border:1px solid var(--md-sys-color-outline-variant);background:var(--md-sys-color-surface);color:var(--md-sys-color-text);border-radius:999px;padding:6px 11px;font-size:.66rem;font-weight:600}.tool-mini-btn:disabled{opacity:.45;cursor:not-allowed}.quiz-controls{margin-top:2px}@media (width<=640px){.quiz-card-header{flex-direction:column;align-items:flex-start}.quiz-option-button{grid-template-columns:auto 1fr}.quiz-option-mark{grid-column:2}}.deck-meta{color:var(--md-sys-color-text-variant);text-align:center;font-size:.66rem}.deck-card{border:2px solid color-mix(in srgb, var(--md-sys-color-outline) 72%, #334155 28%);color:#0f172a;text-align:center;cursor:pointer;background:#fff;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:10px;width:100%;min-height:240px;padding:14px 12px;display:flex;box-shadow:0 6px 14px #0f172a17}.deck-face-label{text-transform:uppercase;letter-spacing:.08em;color:#1f2937;text-align:center;font-size:.62rem;font-weight:700}.deck-face-text{text-align:center;max-width:95%;margin:0;font-size:.84rem;font-weight:650;line-height:1.45}.cards-result .tool-inline-controls{justify-content:center}.markdown-body{word-break:break-word;font-size:1rem;line-height:1.6}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body p,.markdown-body ul,.markdown-body ol{margin-bottom:.75em}.markdown-body ul,.markdown-body ol{padding-left:1.5em}.markdown-body li{margin-bottom:.25em}.markdown-body strong{font-weight:700}.markdown-body code{font-family:var(--mono);background-color:#0000000f;border-radius:6px;padding:.2em .4em;font-size:.85em}.user .markdown-body code{background-color:#fff3}.markdown-body pre{background-color:#0000000a;border-radius:12px;margin-bottom:.75em;padding:12px;overflow-x:auto}.user .markdown-body pre{background-color:#ffffff26}.markdown-body pre code{background-color:#0000;padding:0;font-size:.85em}@media (width<=1024px){.chat-page-main{height:100vh;padding:16px 16px 96px!important}}.message-turn:has(.tool-event-pending){opacity:.8;margin-top:-12px}.message-turn:has(.tool-event-pending) .message-avatar{transform:scale(.8)}.message-turn:has(.tool-event-pending) .message-bubble{border:1px dashed var(--outline-color);box-shadow:none;font-size:.9rem;background:0 0!important}.chat-container{transition:border-color .2s;position:relative}.chat-container.drag-over{border:2px dashed var(--md-sys-color-primary)}.drag-drop-overlay{z-index:100;background-color:rgba(var(--md-sys-color-primary-rgb), .05);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none;border-radius:inherit;justify-content:center;align-items:center;animation:.2s ease-out fadeIn;display:flex;position:absolute;inset:0}.drag-drop-content{background-color:var(--md-sys-color-surface-container-high);color:var(--md-sys-color-primary);border:2px solid var(--md-sys-color-primary-container);border-radius:24px;flex-direction:column;align-items:center;gap:16px;padding:32px;display:flex;box-shadow:0 12px 32px #0000001f}.drag-drop-content p{margin:0;font-size:1.1rem;font-weight:700}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.history-item{cursor:pointer;border-radius:12px;align-items:center;padding:10px 12px;display:flex;position:relative}.dots-btn{opacity:0;color:var(--md-sys-color-outline);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:4px;transition:opacity .2s,background .2s}.history-item:hover .dots-btn{opacity:1}.dots-btn:hover{background-color:#00000014}.sidebar-dropdown{z-index:1000;background:#fff;border:1px solid #eee;border-radius:12px;min-width:140px;padding:6px;animation:.1s ease-out fadeIn;position:absolute;top:100%;right:0;box-shadow:0 4px 20px #00000026}.dropdown-item{cursor:pointer;text-align:left;background:0 0;border:none;border-radius:8px;align-items:center;gap:10px;width:100%;padding:8px 12px;font-size:.85rem;display:flex}.dropdown-item:hover{background-color:#f5f5f5}.dropdown-item.danger{color:#ef4444}.modal-backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:9999;background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.confirm-modal{background:#fff;border-radius:20px;width:min(400px,90%);padding:24px;animation:.2s cubic-bezier(.175,.885,.32,1.275) modalPop;box-shadow:0 20px 40px #0003}.confirm-modal h3{margin:0 0 12px;font-size:1.25rem}.confirm-modal p{color:#666;margin-bottom:24px;line-height:1.5}.modal-actions{justify-content:flex-end;gap:12px;display:flex}.modal-btn{cursor:pointer;border:none;border-radius:99px;padding:10px 20px;font-weight:600}.modal-btn.secondary{background:#f1f1f1}.modal-btn.danger{color:#fff;background:#ef4444}@keyframes modalPop{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.typing-indicator{align-items:center;gap:5px;padding:4px 2px;display:flex}.typing-indicator span{opacity:.4;background-color:currentColor;border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite typing-bounce}.typing-indicator span:first-child{animation-delay:0s}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing-bounce{0%,60%,to{opacity:.4;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}@media (width>=1024px){.chat-sidebar-wrapper{z-index:1;opacity:1;width:300px;transition:width .3s cubic-bezier(.4,0,.2,1),opacity .2s;display:block;position:relative;transform:none}.chat-sidebar-wrapper:not(.open){opacity:0;pointer-events:none;width:0;margin-right:-24px;overflow:hidden}}.system-modal-overlay{-webkit-backdrop-filter:blur(8px);z-index:9999;background-color:#1c1b1f66;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.system-modal-content{background-color:var(--md-sys-color-surface);text-align:center;border-radius:48px;flex-direction:column;align-items:center;width:100%;max-width:440px;padding:48px 40px;display:flex;position:relative;overflow:hidden;box-shadow:0 24px 48px #00000026}.system-modal-next-btn{background-color:var(--md-sys-color-surface-container);width:40px;height:40px;color:var(--md-sys-color-primary);z-index:10;cursor:pointer;border-radius:50%;justify-content:center;align-items:center;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;position:absolute;top:24px;right:24px}.system-modal-next-btn:hover{background-color:var(--md-sys-color-secondary-container);transform:scale(1.05)}.system-modal-next-btn:active{transform:scale(.95)}.system-modal-illustration{width:160px;height:160px;margin-bottom:32px;animation:6s ease-in-out infinite float}.system-modal-title{color:var(--md-sys-color-text);letter-spacing:-.02em;margin-bottom:12px;font-size:1.75rem;font-weight:800}.system-modal-description{color:var(--md-sys-color-text-variant);max-width:320px;margin-bottom:40px;font-size:1rem;line-height:1.6}.system-modal-actions{flex-direction:column;gap:12px;width:100%;display:flex}.sys-btn{border-radius:var(--radius-pill);width:100%;padding:16px 24px;font-size:1rem;font-weight:700;transition:transform .2s cubic-bezier(.4,0,.2,1),box-shadow .2s}.sys-btn:active{transform:scale(.96)}.sys-btn-primary{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);box-shadow:0 4px 12px #6750a433}.sys-btn-primary:hover{box-shadow:0 8px 16px #6750a44d}.sys-btn-secondary{background-color:var(--md-sys-color-surface-container);color:var(--md-sys-color-text)}.sys-btn-secondary:hover{background-color:var(--md-sys-color-secondary-container)}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-12px)}to{transform:translateY(0)}}.fade-in{animation:.3s cubic-bezier(.4,0,.2,1) forwards fadeIn}.fade-out{animation:.3s cubic-bezier(.4,0,.2,1) forwards fadeOut}.slide-up{animation:.4s cubic-bezier(.34,1.56,.64,1) forwards slideUp}.slide-down{animation:.3s cubic-bezier(.4,0,.2,1) forwards slideDown}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes slideUp{0%{opacity:0;transform:translateY(40px)scale(.95)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes slideDown{0%{opacity:1;transform:translateY(0)scale(1)}to{opacity:0;transform:translateY(40px)scale(.95)}}.settings-container{flex-direction:column;gap:32px;max-width:800px;margin:0 auto;padding:24px;display:flex}.settings-header{margin-bottom:24px}.settings-header h1{color:var(--md-sys-color-text);margin-bottom:8px;font-size:2rem;font-weight:800}.settings-header p{color:var(--md-sys-color-text-variant);font-size:1rem}.settings-section{background-color:var(--md-sys-color-surface-container);border-radius:32px;flex-direction:column;gap:24px;padding:32px;display:flex}.settings-section h2{color:var(--md-sys-color-text);align-items:center;gap:12px;margin:0;font-size:1.25rem;font-weight:700;display:flex}.profile-info{align-items:center;gap:24px;display:flex}.profile-avatar-large{background-color:var(--md-sys-color-primary);width:80px;height:80px;color:var(--md-sys-color-on-primary);border-radius:40px;justify-content:center;align-items:center;font-size:2rem;font-weight:800;display:flex}.profile-details h3{color:var(--md-sys-color-text);margin:0;font-size:1.25rem}.profile-details p{color:var(--md-sys-color-text-variant);margin:4px 0 0;font-size:.875rem}.setting-row{border-bottom:1px solid #79747e1a;justify-content:space-between;align-items:center;padding:16px 0;display:flex}.setting-row:last-child{border-bottom:none;padding-bottom:0}.setting-info{flex-direction:column;gap:4px;display:flex}.setting-label{color:var(--md-sys-color-text);font-weight:600}.setting-desc{color:var(--md-sys-color-text-variant);font-size:.8rem}.switch{width:52px;height:32px;display:inline-block;position:relative}.switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:var(--md-sys-color-outline);transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;width:24px;height:24px;transition:all .4s;position:absolute;bottom:4px;left:4px}input:checked+.slider{background-color:var(--md-sys-color-primary)}input:focus+.slider{box-shadow:0 0 1px var(--md-sys-color-primary)}input:checked+.slider:before{transform:translate(20px)}.slider.round{border-radius:34px}.slider.round:before{border-radius:50%}.sys-btn-danger{color:#ef4444;background-color:#fee2e2}.sys-btn-danger:hover{background-color:#fecaca}.mobile-only-badge{text-transform:uppercase;background:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:8px;margin-left:8px;padding:2px 6px;font-size:.65rem;font-weight:700;display:inline-block}@media (width>=1024px){.mobile-only-setting{opacity:.5;pointer-events:none}}.summarizer-main{width:100%;height:100vh;display:flex;overflow:hidden;max-width:none!important;margin:0!important;padding:0!important}.summarizer-main>*{flex:1;min-height:0}@media (width>=1024px){.summarizer-main{padding:0!important}}.library-main{flex-direction:column;gap:20px;padding-bottom:96px;display:flex}.library-title-row{background:radial-gradient(circle at top right, #6750a42e, transparent 55%), var(--md-sys-color-surface-container);border:1px solid #79747e33;flex-direction:column;gap:18px;padding:clamp(18px,2.4vw,28px);display:flex}.library-overline{color:var(--md-sys-color-primary);text-transform:uppercase;letter-spacing:.08em;margin:0;font-size:.75rem;font-weight:700}.library-title-row h1{color:var(--md-sys-color-text);letter-spacing:-.02em;overflow-wrap:anywhere;margin:0;font-size:clamp(1.8rem,3.4vw,2.5rem);line-height:1.06}.library-subtitle{color:var(--md-sys-color-text-variant);overflow-wrap:anywhere;max-width:66ch;margin:0;line-height:1.45}.library-title-actions{flex-wrap:wrap;gap:10px;margin-top:4px;display:flex}.library-primary-btn,.library-secondary-btn,.library-card-action{border:1px solid #0000;border-radius:9999px;padding:10px 18px;font-size:.9rem;font-weight:700;transition:transform .15s,box-shadow .25s,background-color .2s,color .2s}.library-primary-btn{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);box-shadow:0 10px 24px #6750a440}.library-primary-btn:hover{transform:translateY(-1px)}.library-secondary-btn{color:var(--md-sys-color-text);background-color:var(--md-sys-color-surface);border-color:#79747e4d}.library-secondary-btn:hover{background-color:var(--md-sys-color-secondary-container)}.library-tabs{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px;display:grid}.library-tab{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text-variant);border:1px solid #79747e40;border-radius:14px;justify-content:center;align-items:center;gap:8px;padding:12px 14px;font-weight:600;display:inline-flex}.library-tab.active{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-color:#0000}.tab-icon{font-size:1rem}.library-controls{background-color:var(--md-sys-color-surface-container);border:1px solid #79747e33;flex-direction:column;gap:16px;display:flex}.library-search-wrap{flex-direction:column;gap:6px;display:flex}.library-filter-label{text-transform:uppercase;letter-spacing:.08em;color:var(--md-sys-color-text-variant);font-size:.78rem;font-weight:700}.library-search-input,.library-filter-group select{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border:1px solid #79747e4d;border-radius:14px;padding:11px 14px;font-size:.95rem}.library-search-input:focus,.library-filter-group select:focus{outline-offset:1px;outline:2px solid #6750a44d}.library-filter-grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;display:grid}.library-filter-group{flex-direction:column;gap:6px;display:flex}.library-control-actions{flex-wrap:nowrap;justify-content:center;align-items:center;gap:12px;display:flex}.library-upload-btn{white-space:nowrap;min-width:150px;padding:13px 22px;font-size:1rem;box-shadow:0 12px 26px #6750a457}.library-reload-btn{white-space:nowrap;min-width:130px;min-height:42px}.library-upload-success{color:#0a684f;background-color:#0080631f;border:1px solid #00806347;border-radius:14px;padding:11px 14px;font-size:.92rem}.library-upload-queue{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1100;background-color:#fffffff0;border:1px solid #79747e47;border-radius:16px;flex-direction:column;gap:10px;width:min(360px,100vw - 24px);padding:10px 12px;display:flex;position:fixed;bottom:18px;right:18px;box-shadow:0 18px 36px #16141833}.library-upload-queue-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.library-upload-queue-header h2{color:var(--md-sys-color-text);letter-spacing:.03em;text-transform:uppercase;margin:0;font-size:.86rem}.library-upload-queue-list{flex-direction:column;gap:8px;max-height:260px;padding-right:2px;display:flex;overflow-y:auto}.library-upload-job{background-color:var(--md-sys-color-surface);border:1px solid #79747e38;border-radius:12px;justify-content:space-between;align-items:flex-start;gap:8px;padding:9px 10px;display:flex}.library-upload-job-main{flex-direction:column;gap:4px;min-width:0;display:flex}.library-upload-job-title{color:var(--md-sys-color-text);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.86rem;font-weight:700;overflow:hidden}.library-upload-job-subtitle{color:var(--md-sys-color-text-variant);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.78rem;overflow:hidden}.library-upload-job-message{color:var(--md-sys-color-text-variant);margin:0;font-size:.74rem}.library-upload-job-side{flex-direction:column;align-items:flex-end;gap:8px;display:flex}.library-upload-job-status{border:1px solid #0000;border-radius:9999px;padding:4px 9px;font-size:.7rem;font-weight:700}.library-upload-job-status.is-uploading{color:#2563eb;background-color:#2774ff1f;border-color:#2774ff4d}.library-upload-job-status.is-completed{color:#0a684f;background-color:#0080631f;border-color:#00806342}.library-upload-job-status.is-failed{color:#9f1f1f;background-color:#d32f2f1f;border-color:#d32f2f3d}.library-upload-job-dismiss{color:var(--md-sys-color-text-variant);background-color:#0000;border:1px solid #79747e57;border-radius:9999px;padding:4px 8px;font-size:.68rem;font-weight:700}.library-upload-clear-btn{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text-variant);border:1px solid #79747e52;border-radius:9999px;padding:4px 8px;font-size:.68rem;font-weight:700}.library-upload-more-jobs{color:var(--md-sys-color-text-variant);text-align:center;margin:0;font-size:.74rem}.library-alert{color:#9f1f1f;background-color:#d32f2f14;border:1px solid #d32f2f3d;border-radius:14px;padding:12px 16px;font-size:.95rem}.library-results{color:var(--md-sys-color-text-variant);margin:0;font-size:.92rem}.library-empty{text-align:center;padding:48px 20px}.library-empty h2{margin-bottom:8px;font-size:1.2rem}.library-empty p{color:var(--md-sys-color-text-variant);margin:0}.library-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;display:grid}.library-card{background-color:var(--md-sys-color-surface);min-width:0;min-height:220px;box-shadow:none;border:1px solid #79747e33;border-radius:18px;flex-direction:column;gap:10px;padding:16px;display:flex}.library-card.resource-document{box-shadow:inset 0 0 0 1px #6750a41f}.library-card.resource-video{box-shadow:inset 0 0 0 1px #2672ff24}.library-card.resource-flashcard{box-shadow:inset 0 0 0 1px #00806333}.library-card.resource-summary{box-shadow:inset 0 0 0 1px #c2660038}.library-card-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.resource-pill{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:9999px;padding:5px 10px;font-size:.76rem;font-weight:700}.resource-year{color:var(--md-sys-color-text-variant);font-size:.78rem}.library-card h2{letter-spacing:-.01em;color:var(--md-sys-color-text);overflow-wrap:anywhere;word-break:break-word;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;margin:0;font-size:1.02rem;line-height:1.35;display:-webkit-box;overflow:hidden}.resource-subtitle{color:var(--md-sys-color-text-variant);overflow-wrap:anywhere;word-break:break-word;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;margin:0;font-size:.9rem;line-height:1.38;display:-webkit-box;overflow:hidden}.resource-meta{flex-wrap:wrap;gap:8px;margin-top:auto;display:flex}.resource-meta span{max-width:100%;color:var(--md-sys-color-text);white-space:nowrap;text-overflow:ellipsis;background-color:#6750a414;border-radius:9999px;padding:4px 10px;font-size:.78rem;overflow:hidden}.library-card-action{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);border:1px solid #0000;align-self:flex-start;margin-top:6px}.library-card-action:hover{transform:translateY(-1px);box-shadow:0 8px 18px #6750a440}.library-upload-modal-overlay{z-index:1200;background-color:#16141894;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.library-upload-modal{background-color:var(--md-sys-color-surface-container);border:1px solid #79747e4d;flex-direction:column;gap:14px;width:min(760px,100%);max-height:min(90vh,860px);padding:clamp(18px,2.4vw,26px);display:flex;overflow:auto}.library-upload-modal-header{justify-content:space-between;gap:14px;display:flex}.library-upload-kicker{text-transform:uppercase;letter-spacing:.09em;color:var(--md-sys-color-primary);margin:0 0 6px;font-size:.72rem;font-weight:800}.library-upload-modal-header h2{color:var(--md-sys-color-text);margin:0;font-size:clamp(1.2rem,2.2vw,1.56rem)}.library-upload-modal-header p{color:var(--md-sys-color-text-variant);max-width:55ch;margin:8px 0 0}.library-upload-close-btn{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border:1px solid #79747e66;border-radius:9999px;align-self:flex-start;padding:10px 16px;font-weight:700}.library-upload-dropzone{background:radial-gradient(circle at top, #6750a424, transparent 65%), var(--md-sys-color-surface);text-align:center;border:2px dashed #6750a461;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:10px;min-height:190px;padding:24px;transition:transform .15s,border-color .2s,box-shadow .2s;display:flex}.library-upload-dropzone.is-dragging{border-color:#6750a4cc;transform:translateY(-1px);box-shadow:0 12px 30px #6750a433}.library-upload-drop-title{color:var(--md-sys-color-text);overflow-wrap:anywhere;margin:0;font-size:1rem;font-weight:700}.library-upload-drop-subtitle{color:var(--md-sys-color-text-variant);margin:0;font-size:.92rem}.library-upload-file-summary{color:var(--md-sys-color-text-variant);margin:0;font-size:.9rem}.library-upload-meta-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;display:grid}.library-upload-field{flex-direction:column;gap:6px;display:flex}.library-upload-field label{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.08em;font-size:.73rem;font-weight:700}.library-upload-field input{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border:1px solid #79747e52;border-radius:12px;padding:10px 12px;font-size:.93rem}.library-upload-field input:focus{outline-offset:1px;outline:2px solid #6750a44d}.library-upload-field-wide{grid-column:1/-1}.library-upload-profile-note{color:var(--md-sys-color-text-variant);margin:0;font-size:.88rem}.library-upload-error{color:#9f1f1f;background-color:#d32f2f1a;border:1px solid #d32f2f3d;border-radius:12px;padding:10px 12px;font-size:.9rem}.library-upload-modal-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}@media (width<=740px){.library-upload-queue{width:auto;max-height:46vh;bottom:12px;left:12px;right:12px}.library-title-actions{width:100%}.library-title-actions .library-primary-btn,.library-title-actions .library-secondary-btn{flex:1 1 0;min-width:130px}.library-upload-modal{width:calc(100vw - 24px);max-height:92vh;padding:18px}.library-upload-modal-header{flex-direction:column}.library-upload-modal-header p{max-width:none}.library-upload-close-btn{align-self:flex-end}.library-upload-meta-grid{grid-template-columns:1fr}.library-upload-modal-actions{width:100%}.library-upload-modal-actions .library-primary-btn,.library-upload-modal-actions .library-secondary-btn{flex:1 1 0;min-width:130px}.library-upload-job{flex-direction:column}.library-upload-job-side{flex-direction:row;justify-content:space-between;align-items:center;width:100%}}@media (width>=768px){.library-main{gap:24px}}.library-card-actions{flex-direction:column;gap:.375rem;margin-top:auto;display:flex}.library-card-action{justify-content:center;align-items:center;gap:.375rem;display:flex}.library-card-actions{flex-flow:wrap;gap:.5rem;margin-top:auto;display:flex}.library-card-action{flex:1;min-height:36px;padding:8px 12px;font-size:.82rem}.library-card-fork-btn{background:var(--md-sys-color-surface);color:var(--md-sys-color-text-variant);border:1px solid #79747e57;flex:none;min-height:36px;padding:8px 12px;font-size:.82rem}.library-card-fork-btn:hover{color:var(--md-sys-color-primary);background:#6750a40f;border-color:#6750a480;transform:translateY(-1px)}:root{--react-pdf-text-layer:1;--highlight-bg-color:#b400aa;--highlight-selected-bg-color:#006400}@media screen and (forced-colors:active){:root{--highlight-bg-color:Highlight;--highlight-selected-bg-color:ButtonText}}[data-main-rotation="90"]{transform:rotate(90deg)translateY(-100%)}[data-main-rotation="180"]{transform:rotate(180deg)translate(-100%,-100%)}[data-main-rotation="270"]{transform:rotate(270deg)translate(-100%)}.textLayer{text-align:initial;-webkit-text-size-adjust:none;-moz-text-size-adjust:none;text-size-adjust:none;forced-color-adjust:none;transform-origin:0 0;z-index:2;line-height:1;position:absolute;inset:0;overflow:hidden}.textLayer :is(span,br){color:#0000;white-space:pre;cursor:text;transform-origin:0 0;margin:0;position:absolute}.textLayer span.markedContent{height:0;top:0}.textLayer .highlight{background-color:var(--highlight-bg-color);border-radius:4px;margin:-1px;padding:1px}.textLayer .highlight.appended{position:initial}.textLayer .highlight.begin{border-radius:4px 0 0 4px}.textLayer .highlight.end{border-radius:0 4px 4px 0}.textLayer .highlight.middle{border-radius:0}.textLayer .highlight.selected{background-color:var(--highlight-selected-bg-color)}.textLayer br::selection{background:0 0}.textLayer .endOfContent{z-index:-1;cursor:default;-webkit-user-select:none;user-select:none;display:block;position:absolute;inset:100% 0 0}.textLayer.selecting .endOfContent{top:0}.hiddenCanvasElement{width:0;height:0;display:none;position:absolute;top:0;left:0}:root{--react-pdf-annotation-layer:1;--annotation-unfocused-field-background:url("data:image/svg+xml;charset=UTF-8,<svg width='1px' height='1px' xmlns='http://www.w3.org/2000/svg'><rect width='100%' height='100%' style='fill:rgba(0, 54, 255, 0.13);'/></svg>");--input-focus-border-color:Highlight;--input-focus-outline:1px solid Canvas;--input-unfocused-border-color:transparent;--input-disabled-border-color:transparent;--input-hover-border-color:black;--link-outline:none}@media screen and (forced-colors:active){:root{--input-focus-border-color:CanvasText;--input-unfocused-border-color:ActiveText;--input-disabled-border-color:GrayText;--input-hover-border-color:Highlight;--link-outline:1.5px solid LinkText}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid selecteditem}.annotationLayer .linkAnnotation:hover{-webkit-backdrop-filter:invert();backdrop-filter:invert()}}.annotationLayer{pointer-events:none;transform-origin:0 0;z-index:3;position:absolute;top:0;left:0}.annotationLayer[data-main-rotation="90"] .norotate{transform:rotate(270deg)translate(-100%)}.annotationLayer[data-main-rotation="180"] .norotate{transform:rotate(180deg)translate(-100%,-100%)}.annotationLayer[data-main-rotation="270"] .norotate{transform:rotate(90deg)translateY(-100%)}.annotationLayer canvas{width:100%;height:100%;position:absolute}.annotationLayer section{text-align:initial;pointer-events:auto;box-sizing:border-box;transform-origin:0 0;margin:0;position:absolute}.annotationLayer .linkAnnotation{outline:var(--link-outline)}.textLayer.selecting~.annotationLayer section{pointer-events:none}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a{width:100%;height:100%;font-size:1em;position:absolute;top:0;left:0}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a:hover{opacity:.2;background:#ff0;box-shadow:0 2px 10px #ff0}.annotationLayer .textAnnotation img{cursor:pointer;width:100%;height:100%;position:absolute;top:0;left:0}.annotationLayer .textWidgetAnnotation :is(input,textarea),.annotationLayer .choiceWidgetAnnotation select,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{background-image:var(--annotation-unfocused-field-background);border:2px solid var(--input-unfocused-border-color);box-sizing:border-box;font:calc(9px * var(--total-scale-factor)) sans-serif;vertical-align:top;width:100%;height:100%;margin:0}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid red}.annotationLayer .choiceWidgetAnnotation select option{padding:0}.annotationLayer .buttonWidgetAnnotation.radioButton input{border-radius:50%}.annotationLayer .textWidgetAnnotation textarea{resize:none}.annotationLayer .textWidgetAnnotation :is(input,textarea)[disabled],.annotationLayer .choiceWidgetAnnotation select[disabled],.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input[disabled]{border:2px solid var(--input-disabled-border-color);cursor:not-allowed;background:0 0}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:hover{border:2px solid var(--input-hover-border-color)}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation.checkBox input:hover{border-radius:2px}.annotationLayer .textWidgetAnnotation :is(input,textarea):focus,.annotationLayer .choiceWidgetAnnotation select:focus{border:2px solid var(--input-focus-border-color);outline:var(--input-focus-outline);background:0 0;border-radius:2px}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) :focus{background-color:#0000;background-image:none}.annotationLayer .buttonWidgetAnnotation.checkBox :focus{border:2px solid var(--input-focus-border-color);outline:var(--input-focus-outline);border-radius:2px}.annotationLayer .buttonWidgetAnnotation.radioButton :focus{border:2px solid var(--input-focus-border-color);outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after,.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{content:"";background-color:canvastext;display:block;position:absolute}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{width:1px;height:80%;left:45%}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before{transform:rotate(45deg)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{transform:rotate(-45deg)}.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{border-radius:50%;width:50%;height:50%;top:20%;left:30%}.annotationLayer .textWidgetAnnotation input.comb{padding-left:2px;padding-right:0;font-family:monospace}.annotationLayer .textWidgetAnnotation input.comb:focus{width:103%}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{appearance:none}.annotationLayer .popupTriggerArea{width:100%;height:100%}.annotationLayer .fileAttachmentAnnotation .popupTriggerArea{position:absolute}.annotationLayer .popupWrapper{font-size:calc(9px * var(--total-scale-factor));width:100%;min-width:calc(180px * var(--total-scale-factor));pointer-events:none;position:absolute}.annotationLayer .popup{max-width:calc(180px * var(--total-scale-factor));box-shadow:0 calc(2px * var(--total-scale-factor)) calc(5px * var(--total-scale-factor)) #888;border-radius:calc(2px * var(--total-scale-factor));padding:calc(6px * var(--total-scale-factor));margin-left:calc(5px * var(--total-scale-factor));cursor:pointer;font:message-box;white-space:normal;word-wrap:break-word;pointer-events:auto;background-color:#ff9;position:absolute}.annotationLayer .popup>*{font-size:calc(9px * var(--total-scale-factor))}.annotationLayer .popup h1{display:inline-block}.annotationLayer .popupDate{margin-left:calc(5px * var(--total-scale-factor));display:inline-block}.annotationLayer .popupContent{margin-top:calc(2px * var(--total-scale-factor));padding-top:calc(2px * var(--total-scale-factor));border-top:1px solid #333}.annotationLayer .richText>*{white-space:pre-wrap;font-size:calc(9px * var(--total-scale-factor))}.annotationLayer .highlightAnnotation,.annotationLayer .underlineAnnotation,.annotationLayer .squigglyAnnotation,.annotationLayer .strikeoutAnnotation,.annotationLayer .freeTextAnnotation,.annotationLayer .lineAnnotation svg line,.annotationLayer .squareAnnotation svg rect,.annotationLayer .circleAnnotation svg ellipse,.annotationLayer .polylineAnnotation svg polyline,.annotationLayer .polygonAnnotation svg polygon,.annotationLayer .caretAnnotation,.annotationLayer .inkAnnotation svg polyline,.annotationLayer .stampAnnotation,.annotationLayer .fileAttachmentAnnotation{cursor:pointer}.annotationLayer section svg{width:100%;height:100%;position:absolute;top:0;left:0}.annotationLayer .annotationTextContent{opacity:0;color:#0000;-webkit-user-select:none;user-select:none;pointer-events:none;width:100%;height:100%;position:absolute}.annotationLayer .annotationTextContent span{width:100%;display:inline-block}.pdf-viewer-shell{--pdf-sans:"Sora", "Avenir Next", "Segoe UI", sans-serif;--pdf-mono:"JetBrains Mono", "Cascadia Code", Consolas, monospace;--pdf-ink:#0a0a0a;--pdf-muted:#737373;--pdf-soft:#a3a3a3;--pdf-bg:#fafaf9;--pdf-surface:#fff;--pdf-accent:#6750a4;--pdf-accent-strong:#4b3a80;background:var(--pdf-bg);width:100vw;height:100dvh;color:var(--pdf-ink);font-family:var(--pdf-sans);font-feature-settings:"cv11", "ss01", "ss03";overflow:hidden}.pdf-viewer-layout{box-sizing:border-box;grid-template-columns:minmax(0,1fr) minmax(27.5rem,35rem);gap:1rem;height:100%;padding:1rem;display:grid}.pdf-viewer-layout.is-chat-collapsed{grid-template-columns:minmax(0,1fr) 3.5rem}.pdf-stage{background:radial-gradient(circle at 1px 1px,#0000000b 1px,#0000 0) 0 0/18px 18px,#f5f4f1;border:1px solid #00000014;border-radius:14px;min-height:0;position:relative;overflow:hidden;box-shadow:0 1px 2px #0000000a}.pdf-embed-viewer,.pdf-native-viewer{background:0 0;border:none;width:100%;height:100%;position:absolute;inset:0;overflow:auto}.react-pdf__Page{transition:transform .2s}.pdf-empty-state{height:100%;color:var(--pdf-muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:.75rem;padding:1.5rem;display:flex}.pdf-empty-state p{letter-spacing:-.01em;margin:0;font-size:.875rem}.pdf-float-button{color:#171717;cursor:pointer;height:32px;font-size:.8125rem;font-weight:600;font-family:var(--pdf-sans);background:#fff;border:1px solid #00000014;border-radius:8px;justify-content:center;align-items:center;gap:.35rem;padding:0 .8rem;transition:background-color .12s,border-color .12s;display:inline-flex}.pdf-float-button:hover:not(:disabled){background:#fafaf9;border-color:#0000001f}.pdf-float-button:disabled{opacity:.5;cursor:not-allowed}.pdf-float-button-primary{color:#fafafa;background:#171717;border-color:#171717}.pdf-float-button-primary:hover:not(:disabled){background:#000}.pdf-stage-watermark{pointer-events:none;z-index:7;opacity:.82;position:absolute;bottom:1rem;right:1rem}.pdf-stage-watermark-mark{letter-spacing:-.04em;color:#fff;background:linear-gradient(155deg, var(--pdf-accent) 0%, var(--pdf-accent-strong) 100%);border-radius:8px;place-items:center;width:30px;height:30px;font-size:.75rem;font-weight:700;display:grid;box-shadow:0 1px 2px #6750a440,inset 0 1px #ffffff38}.pdf-context-menu{z-index:70;background:#fff;border:1px solid #0000001f;border-radius:12px;width:min(300px,100vw - 24px);padding:.65rem;position:fixed;box-shadow:0 14px 34px -18px #00000059,0 1px 2px #00000014}.pdf-context-menu-title{letter-spacing:.02em;text-transform:uppercase;color:var(--pdf-accent);margin:0;font-size:.75rem;font-weight:700}.pdf-context-menu-selection{color:#525252;max-height:64px;margin:.45rem 0 .65rem;font-size:.75rem;line-height:1.45;overflow:hidden}.pdf-context-menu-selection.is-muted{color:#8a8a8a}.pdf-context-menu-actions{gap:.34rem;display:grid}.pdf-context-action-btn{text-align:left;color:#111;cursor:pointer;background:#fff;border:1px solid #00000014;border-radius:9px;flex-direction:column;align-items:flex-start;gap:.14rem;width:100%;padding:.52rem .58rem;transition:background-color .14s,border-color .14s,transform .12s;display:flex}.pdf-context-action-btn:hover{background:#fbf9ff;border-color:#6750a459;transform:translateY(-1px)}.pdf-context-action-label{letter-spacing:-.01em;font-size:.79rem;font-weight:600}.pdf-context-action-sub{color:#7a7a7a;letter-spacing:-.005em;font-size:.69rem}.pdf-viewer-warning{z-index:8;color:#835207;background:#fff7e1;border:1px solid #cd8b0e73;border-radius:8px;padding:.45rem .7rem;font-size:.75rem;font-weight:600;position:absolute;bottom:1rem;left:1rem}.pdf-chat-column{background:var(--pdf-surface);border:1px solid #00000014;border-radius:14px;flex-direction:column;min-height:0;display:flex;position:relative;overflow:hidden;box-shadow:0 1px 2px #0000000a}.pdf-chat-column.is-collapsed{min-width:0}.pdf-chat-column.is-collapsed .pdf-chat-header{justify-content:flex-end;min-height:3.5rem;padding:.55rem}.pdf-chat-column.is-collapsed .pdf-chat-header-right{justify-content:flex-end;width:100%}.pdf-chat-header{background:var(--pdf-surface);z-index:5;border-bottom:1px solid #0000000f;flex-shrink:0;justify-content:space-between;align-items:center;gap:1rem;min-height:56px;padding:.75rem 1.125rem;display:flex;position:relative}.pdf-chat-header-left{flex:1;align-items:center;gap:.75rem;min-width:0;display:flex}.pdf-chat-header-right{align-items:center;gap:.375rem;display:flex}.pdf-chat-brand{align-items:center;gap:.5rem;min-width:0;display:flex}.pdf-chat-brand-icon{width:1.55rem;height:1.55rem;color:var(--pdf-accent);background:#6750a41c;border:1px solid #6750a43d;border-radius:.48rem;justify-content:center;align-items:center;display:inline-flex;box-shadow:inset 0 1px #ffffff70}.pdf-chat-brand-text{align-items:baseline;gap:.375rem;min-width:0;display:flex;overflow:hidden}.pdf-chat-brand-name{color:var(--pdf-ink);letter-spacing:-.02em;font-size:.875rem;font-weight:600;line-height:1.2}.pdf-chat-brand-sep{color:#d4d4d4;margin-right:.375rem;font-weight:400}.pdf-chat-brand-crumb{color:var(--pdf-muted);letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;font-size:.8125rem;font-weight:500;overflow:hidden}.pdf-chat-status{letter-spacing:-.01em;white-space:nowrap;font-size:.75rem;font-weight:600}.status-ready{color:#16a34a}.status-connecting{color:var(--pdf-muted);align-items:center;gap:.35rem;display:inline-flex}.status-muted{color:var(--pdf-soft)}.pdf-chat-icon-actions{align-items:center;gap:.25rem;display:flex}.pdf-icon-btn{color:#525252;cursor:pointer;background:0 0;border:none;border-radius:7px;justify-content:center;align-items:center;width:30px;height:30px;transition:background-color .12s,color .12s;display:inline-flex}.pdf-icon-btn:hover:not(:disabled){color:#0a0a0a;background:#f5f5f4}.pdf-icon-btn svg{width:18px;height:18px}.pdf-icon-btn:disabled{opacity:.45;cursor:not-allowed}.pdf-icon-btn-primary{color:#fafafa;background:#171717}.pdf-icon-btn-primary:hover:not(:disabled){background:#000}.pdf-chat-collapse-btn{color:var(--pdf-accent)}.pdf-chat-collapse-btn:hover:not(:disabled){color:var(--pdf-accent-strong);background:#6750a41a}.pdf-chat-messages{scroll-behavior:smooth;flex-direction:column;flex:1;gap:1.75rem;min-height:0;padding:1.5rem 1.5rem 1.75rem;display:flex;overflow-y:auto}.pdf-chat-messages::-webkit-scrollbar{width:8px}.pdf-chat-messages::-webkit-scrollbar-track{background:0 0}.pdf-chat-messages::-webkit-scrollbar-thumb{background:padding-box padding-box;border:2px solid #0000;border-radius:999px}.pdf-chat-messages:hover::-webkit-scrollbar-thumb{background:#0000001f padding-box padding-box}.pdf-chat-placeholder{margin:auto 0}.pdf-chat-empty{padding:2rem .25rem 0;animation:.5s cubic-bezier(.16,1,.3,1) pdfFadeUp;position:relative}@keyframes pdfFadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.pdf-chat-empty-grid{pointer-events:none;z-index:0;background-image:radial-gradient(circle at 1px 1px,#6750a417 1px,#0000 0);background-size:14px 14px;height:180px;position:absolute;inset:-1rem -1rem auto;-webkit-mask-image:radial-gradient(60% 80% at 30% 30%,#000 40%,#0000 85%);mask-image:radial-gradient(60% 80% at 30% 30%,#000 40%,#0000 85%)}.pdf-chat-empty>:not(.pdf-chat-empty-grid){z-index:1;position:relative}.pdf-chat-empty-kicker{text-transform:uppercase;letter-spacing:.1em;color:var(--pdf-accent);font-size:.6875rem;font-weight:600;font-family:var(--pdf-sans);background:#6750a414;border:1px solid #6750a424;border-radius:999px;align-items:center;gap:.5rem;margin-bottom:1rem;padding:.3rem .65rem .3rem .55rem;display:inline-flex}.pdf-chat-empty-kicker-dot{background:var(--pdf-accent);border-radius:50%;width:6px;height:6px;animation:2s ease-in-out infinite pdfPulseKicker;box-shadow:0 0 0 3px #6750a433}@keyframes pdfPulseKicker{0%,to{box-shadow:0 0 0 3px #6750a433}50%{box-shadow:0 0 0 5px #6750a414}}.pdf-chat-empty-greeting{font-family:var(--pdf-sans);letter-spacing:-.04em;color:#0a0a0a;margin:0 0 .75rem;font-size:2.125rem;font-weight:600;line-height:1.05}.pdf-chat-empty-greeting span{background:linear-gradient(90deg,#6750a4 0%,#9a7fd1 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-weight:600}.pdf-chat-empty-sub{font-family:var(--pdf-sans);color:#525252;letter-spacing:-.015em;max-width:380px;margin:0 0 1.75rem;font-size:.9375rem;line-height:1.5}.pdf-chat-suggestions{flex-direction:column;gap:.5rem;max-width:440px;display:flex}.pdf-chat-suggestion{color:#0a0a0a;font-family:var(--pdf-sans);cursor:pointer;text-align:left;background:#fff;border:1px solid #00000012;border-radius:12px;grid-template-columns:auto 1fr;align-items:center;gap:.875rem;padding:.75rem .875rem .75rem .75rem;transition:border-color .15s,background-color .15s,transform .15s;display:grid;box-shadow:0 1px #00000005}.pdf-chat-suggestion:hover{background:#fdfcff;border-color:#6750a459;transform:translate(2px)}.pdf-chat-suggestion-num{color:#737373;font-variant-numeric:tabular-nums;letter-spacing:.02em;background:#f5f5f4;border:1px solid #0000000a;border-radius:8px;place-items:center;width:32px;height:32px;font-size:.6875rem;font-weight:600;transition:background-color .15s,color .15s;display:grid}.pdf-chat-suggestion:hover .pdf-chat-suggestion-num{color:#fff;background:#6750a4;border-color:#6750a4}.pdf-chat-suggestion-body{flex-direction:column;gap:.125rem;min-width:0;display:flex}.pdf-chat-suggestion-title{letter-spacing:-.015em;color:#0a0a0a;align-items:center;gap:.5rem;font-size:.875rem;font-weight:600;display:inline-flex}.pdf-chat-suggestion-sub{color:#737373;letter-spacing:-.005em;font-size:.75rem;line-height:1.4}.pdf-chat-bubble{max-width:100%;animation:.3s cubic-bezier(.16,1,.3,1) pdfBubbleIn;display:flex}@keyframes pdfBubbleIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.pdf-chat-bubble.is-user{justify-content:flex-end}.pdf-chat-bubble.is-assistant{justify-content:flex-start}.pdf-chat-bubble-content{min-width:0}.pdf-chat-bubble.is-user .pdf-chat-bubble-content{color:#fafafa;max-width:85%;font-family:var(--pdf-sans);letter-spacing:-.01em;background:#171717;border-radius:14px 14px 2px;padding:.625rem .875rem;font-size:.875rem;font-weight:500;line-height:1.5}.pdf-chat-bubble.is-assistant .pdf-chat-bubble-content{max-width:100%;font-family:var(--pdf-sans);color:#171717;letter-spacing:-.01em;font-size:.9375rem;line-height:1.65}.pdf-chat-user-text{white-space:pre-wrap;word-break:break-word}.pdf-chat-meta{align-items:center;gap:.4rem;margin-bottom:.5rem;display:inline-flex}.pdf-chat-meta-badge{color:#fff;letter-spacing:-.04em;background:linear-gradient(155deg,#6750a4 0%,#4b3a80 100%);border-radius:5px;justify-content:center;align-items:center;width:18px;height:18px;font-size:.5625rem;font-weight:700;display:inline-flex;box-shadow:inset 0 1px #fff3}.pdf-chat-meta-label{color:#171717;letter-spacing:-.015em;font-size:.75rem;font-weight:600}.pdf-chat-actions{opacity:0;align-items:center;gap:.25rem;margin-top:.75rem;transition:opacity .15s,transform .15s;display:flex;transform:translateY(-2px)}.pdf-chat-bubble.is-assistant:hover .pdf-chat-actions{opacity:1;transform:translateY(0)}.pdf-chat-action-btn{font-family:var(--pdf-sans);color:#737373;cursor:pointer;letter-spacing:-.01em;background:0 0;border:1px solid #0000;border-radius:6px;align-items:center;gap:.3rem;padding:.3rem .5rem;font-size:.75rem;font-weight:500;transition:background-color .12s,color .12s,border-color .12s;display:inline-flex}.pdf-chat-action-btn:hover:not(:disabled){color:#171717;background:#fafaf9;border-color:#0000000f}.pdf-chat-action-btn:disabled{opacity:.45;cursor:not-allowed}.pdf-chat-action-btn svg{width:12px;height:12px}.pdf-chat-markdown{font-family:var(--pdf-sans)}.pdf-chat-markdown>:first-child{margin-top:0}.pdf-chat-markdown>:last-child{margin-bottom:0}.pdf-chat-markdown p{margin:0 0 .85rem}.pdf-chat-markdown h1,.pdf-chat-markdown h2,.pdf-chat-markdown h3,.pdf-chat-markdown h4{font-family:var(--pdf-sans);letter-spacing:-.025em;color:#0a0a0a;margin:1.25rem 0 .625rem;font-weight:600;line-height:1.25}.pdf-chat-markdown h1{font-size:1.125rem}.pdf-chat-markdown h2{font-size:1rem}.pdf-chat-markdown h3,.pdf-chat-markdown h4{font-size:.9375rem}.pdf-chat-markdown strong{color:#0a0a0a;font-weight:600}.pdf-chat-markdown em{font-style:italic}.pdf-chat-markdown a{color:var(--pdf-accent);text-underline-offset:3px;-webkit-text-decoration:underline #6750a459;text-decoration:underline #6750a459;text-decoration-thickness:1px;transition:text-decoration-color .12s}.pdf-chat-markdown a:hover{-webkit-text-decoration-color:var(--pdf-accent);text-decoration-color:var(--pdf-accent)}.pdf-chat-markdown ul,.pdf-chat-markdown ol{margin:.5rem 0 .875rem;padding-left:1.375rem}.pdf-chat-markdown li{margin:.25rem 0;padding-left:.125rem}.pdf-chat-markdown li::marker{color:#a3a3a3}.pdf-chat-markdown blockquote{border-left:2px solid var(--pdf-accent);color:#525252;margin:.875rem 0;padding:.125rem 0 .125rem .875rem;font-style:italic}.pdf-chat-markdown blockquote p{margin:0}.pdf-chat-markdown pre{color:#e5e5e5;font-family:var(--pdf-mono);background:#0a0a0a;border-radius:10px;margin:.875rem 0;padding:.75rem .875rem;font-size:.75rem;line-height:1.6;overflow-x:auto}.pdf-chat-markdown pre code{color:inherit;background:0 0;border:none;padding:0}.pdf-chat-markdown :not(pre)>code{font-family:var(--pdf-mono);color:#171717;background:#f5f5f4;border:1px solid #0000000d;border-radius:5px;padding:.1em .35em;font-size:.8125em}.pdf-chat-markdown .katex-display{background:#fafaf9;border:1px solid #0000000d;border-radius:10px;margin:1rem 0;padding:.875rem;overflow-x:auto}.pdf-chat-markdown table{border-collapse:separate;border-spacing:0;border:1px solid #00000014;border-radius:10px;width:100%;margin:.875rem 0;font-size:.8125rem;overflow:hidden}.pdf-chat-markdown th,.pdf-chat-markdown td{text-align:left;border-bottom:1px solid #0000000f;padding:.5rem .75rem}.pdf-chat-markdown th{letter-spacing:-.005em;background:#fafaf9;font-size:.75rem;font-weight:600}.pdf-chat-markdown tr:last-child td{border-bottom:none}.pdf-chat-markdown hr{background:#00000014;border:none;height:1px;margin:1.25rem 0}.pdf-chat-thinking{font-family:var(--pdf-sans);color:#737373;letter-spacing:-.01em;align-items:center;gap:.5rem;padding:.125rem 0;font-size:.875rem;display:inline-flex}.pdf-chat-thinking-dots{gap:3px;display:inline-flex}.pdf-chat-thinking-dots span{background:var(--pdf-accent);border-radius:50%;width:5px;height:5px;animation:1.2s ease-in-out infinite pdfDotBounce}.pdf-chat-thinking-dots span:nth-child(2){animation-delay:.15s}.pdf-chat-thinking-dots span:nth-child(3){animation-delay:.3s}@keyframes pdfDotBounce{0%,80%,to{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}.pdf-chat-input-wrap{background:#fff;flex-shrink:0;padding:0 1.125rem 1rem;position:relative}.pdf-chat-input-wrap:before{content:"";pointer-events:none;background:linear-gradient(#fff0 0%,#fff 100%);height:32px;position:absolute;top:-32px;left:0;right:0}.pdf-chat-disabled-note{color:#737373;letter-spacing:-.005em;margin-bottom:.5rem;font-size:.75rem}.pdf-chat-input-shell{background:#fff;border:1px solid #0000001a;border-radius:14px;flex-direction:column;padding:.5rem .625rem .5rem .875rem;transition:border-color .15s,box-shadow .15s;display:flex;position:relative;box-shadow:0 1px 2px #0000000a}.pdf-chat-input-shell:focus-within{border-color:#6750a480;box-shadow:0 0 0 4px #6750a414,0 1px 2px #0000000a}.pdf-chat-textarea{resize:none;color:#0a0a0a;width:100%;min-height:28px;max-height:200px;font-family:var(--pdf-sans);letter-spacing:-.01em;background:0 0;border:none;outline:none;padding:.375rem 0 .25rem;font-size:.9375rem;line-height:1.5}.pdf-chat-textarea::placeholder{color:#a3a3a3}.pdf-chat-textarea:disabled{opacity:.6;cursor:not-allowed}.pdf-chat-input-row{justify-content:space-between;align-items:center;gap:.5rem;margin-top:.25rem;display:flex}.pdf-chat-input-tools{align-items:center;gap:.375rem;display:flex}.pdf-chat-tool-pill{height:26px;font-family:var(--pdf-sans);color:#737373;letter-spacing:-.005em;background:0 0;border:1px solid #0000;border-radius:6px;align-items:center;gap:.3rem;padding:0 .5rem;font-size:.6875rem;font-weight:500;display:inline-flex}.pdf-chat-tool-pill:disabled{opacity:1;cursor:default}.pdf-chat-tool-pill-kbd{font-variant-numeric:tabular-nums;letter-spacing:0;font-size:.6875rem;font-weight:600}.pdf-chat-tool-pill-label{color:#a3a3a3;font-weight:400}.pdf-chat-send-row{justify-content:flex-end;display:flex}.pdf-chat-send-btn{height:30px;font-family:var(--pdf-sans);color:#fafafa;cursor:pointer;letter-spacing:-.01em;background:#171717;border:none;border-radius:8px;align-items:center;gap:.375rem;padding:0 .5rem 0 .75rem;font-size:.8125rem;font-weight:500;transition:opacity .12s,background-color .12s,transform 80ms;display:inline-flex;box-shadow:0 1px 2px #0000001a,inset 0 1px #ffffff14}.pdf-chat-send-btn:hover:not(:disabled){background:#000}.pdf-chat-send-btn:active:not(:disabled){transform:scale(.97)}.pdf-chat-send-btn:disabled{color:#a3a3a3;cursor:not-allowed;box-shadow:none;background:#e5e5e5}.pdf-chat-send-btn svg{width:13px;height:13px}.pdf-chat-footer-hint{color:#a3a3a3;text-align:center;letter-spacing:-.005em;font-size:.6875rem;font-family:var(--pdf-sans);margin:.625rem 0 0}.spin{animation:1s linear infinite pdfSpin}@keyframes pdfSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (width<=1200px){.pdf-viewer-layout{grid-template-columns:1fr minmax(23.5rem,31rem)}.pdf-viewer-layout.is-chat-collapsed{grid-template-columns:minmax(0,1fr) 3.5rem}}@media (width<=900px){.pdf-viewer-layout{grid-template-rows:40vh 1fr;grid-template-columns:1fr;gap:.75rem;padding:.75rem}.pdf-viewer-layout.is-chat-collapsed{grid-template-rows:40vh auto;grid-template-columns:1fr}.pdf-chat-header{padding:.75rem .9rem}.pdf-chat-header-right{gap:.2rem}.pdf-chat-status{display:none}}@media (width<=600px){.pdf-viewer-layout{grid-template-rows:35vh 1fr}.pdf-chat-messages{gap:1.5rem;padding:1.25rem 1rem}.pdf-chat-empty-greeting{font-size:1.75rem}.pdf-chat-input-wrap{padding:0 .875rem .875rem}.pdf-chat-brand-crumb,.pdf-chat-tool-pill-label,.pdf-chat-icon-actions .pdf-icon-btn:nth-child(2){display:none}}.pdf-zoom-toolbar{z-index:8;-webkit-backdrop-filter:blur(10px);opacity:.45;background:#ffffffeb;border:1px solid #0000001a;border-radius:10px;align-items:center;gap:0;transition:opacity .2s;display:flex;position:absolute;bottom:1.1rem;left:50%;overflow:hidden;transform:translate(-50%);box-shadow:0 2px 8px #0000001a,0 1px 2px #0000000f}.pdf-stage:hover .pdf-zoom-toolbar{opacity:1}.pdf-zoom-btn{width:32px;height:32px;color:var(--pdf-ink);cursor:pointer;font-size:1.1rem;font-weight:400;line-height:1;font-family:var(--pdf-sans);background:0 0;border:none;place-items:center;transition:background .12s;display:grid}.pdf-zoom-btn:hover:not(:disabled){color:var(--pdf-accent);background:#6750a414}.pdf-zoom-btn:disabled{opacity:.3;cursor:not-allowed}.pdf-zoom-level{min-width:3.2rem;height:32px;color:var(--pdf-ink);font-size:.75rem;font-weight:600;font-family:var(--pdf-mono);cursor:pointer;letter-spacing:.01em;background:0 0;border:none;border-left:1px solid #00000012;border-right:1px solid #00000012;place-items:center;padding:0 .3rem;transition:background .12s;display:grid}.pdf-zoom-level:hover{color:var(--pdf-accent);background:#6750a40f}.react-pdf__Document{box-sizing:border-box;flex-direction:column;align-items:center;width:max-content;min-width:100%;padding:1.25rem 1.5rem 2rem;display:flex}.react-pdf__Page{border-radius:2px;margin:0 auto .75rem;position:relative;overflow:visible;box-shadow:0 2px 10px #00000021;width:auto!important}.react-pdf__Page canvas{display:block}.react-pdf__Page__textContent{cursor:text;-webkit-user-select:text!important;user-select:text!important}.react-pdf__Page__textContent span{color:#0000;white-space:pre;cursor:text;box-sizing:content-box}.react-pdf__Page__textContent span::selection{color:#0000;background:#6750a44d}.pdf-chat-bubble.is-assistant .pdf-chat-bubble-content{max-width:100%;overflow-x:hidden}.pdf-chat-markdown table{table-layout:fixed;word-break:break-word}.pdf-chat-markdown th,.pdf-chat-markdown td{overflow-wrap:break-word}.pdf-highlight-rect{pointer-events:all;mix-blend-mode:multiply;opacity:.55;cursor:pointer;z-index:4;border-radius:2px;transition:opacity .15s;position:absolute}.pdf-highlight-rect:hover{opacity:.85;outline-offset:1px;outline:1.5px solid #00000040}.pdf-selection-toolbar{z-index:120;white-space:nowrap;background:#1c1c1e;border-radius:10px;align-items:center;gap:4px;padding:6px 10px;animation:.12s cubic-bezier(.34,1.56,.64,1) both pdf-toolbar-pop;display:flex;position:fixed;transform:translate(-50%)translateY(-100%);box-shadow:0 4px 20px #00000047,0 1px 4px #0000002e}@keyframes pdf-toolbar-pop{0%{opacity:0;transform:translate(-50%)translateY(calc(6px - 100%))scale(.92)}to{opacity:1;transform:translate(-50%)translateY(-100%)scale(1)}}.pdf-selection-toolbar-label{letter-spacing:.04em;text-transform:uppercase;color:#ffffff73;align-items:center;gap:5px;padding-right:4px;font-size:.7rem;font-weight:600;display:flex}.pdf-selection-toolbar-swatches{align-items:center;gap:5px;display:flex}.pdf-swatch-btn{cursor:pointer;border:2px solid #ffffff2e;border-radius:50%;flex-shrink:0;width:18px;height:18px;padding:0;transition:transform .1s,border-color .1s}.pdf-swatch-btn:hover{border-color:#ffffffb3;transform:scale(1.25)}.pdf-selection-toolbar-divider{background:#ffffff26;flex-shrink:0;width:1px;height:16px;margin:0 2px}.pdf-selection-toolbar-action{color:#ffffffd1;cursor:pointer;letter-spacing:-.01em;background:0 0;border:none;border-radius:6px;padding:3px 8px;font-size:.75rem;font-weight:500;transition:background .1s,color .1s}.pdf-selection-toolbar-action:hover{color:#fff;background:#ffffff24}.pdf-highlights-badge{z-index:30;color:#ffffffd9;pointer-events:auto;background:#1c1c1e;border-radius:20px;align-items:center;gap:5px;padding:5px 9px;font-size:.72rem;font-weight:600;animation:.15s cubic-bezier(.34,1.56,.64,1) both pdf-toolbar-pop;display:flex;position:absolute;bottom:68px;right:14px;box-shadow:0 2px 10px #0003}.pdf-highlights-badge-clear{color:#fff9;cursor:pointer;background:#ffffff1a;border:none;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;margin-left:2px;padding:0;transition:background .15s,color .15s;display:flex}.pdf-highlights-badge-clear:hover{color:#ff6b6b;background:#ff505059}.qem-overlay{-webkit-backdrop-filter:blur(8px);z-index:9999;background-color:#1c1b1f66;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.qem-content{background-color:var(--md-sys-color-surface);flex-direction:column;gap:0;width:100%;display:flex;position:relative;overflow:hidden;box-shadow:0 24px 48px #00000026}.qem-content--desktop{text-align:center;border-radius:48px;align-items:center;max-width:440px;padding:48px 40px 36px}.qem-content--mobile{display:none}.qem-illustration{width:160px;height:160px;margin-bottom:32px;animation:6s ease-in-out infinite qem-float}.qem-title{color:var(--md-sys-color-text);letter-spacing:-.02em;margin-bottom:12px;font-size:1.75rem;font-weight:800}.qem-description{color:var(--md-sys-color-text-variant);max-width:320px;margin-bottom:24px;font-size:1rem;line-height:1.6}.qem-usage-pill{background:var(--md-sys-color-surface-container);color:var(--md-sys-color-text-variant);border-radius:100px;align-items:center;gap:7px;margin-bottom:24px;padding:6px 14px;font-size:.8125rem;font-weight:600;display:inline-flex}.qem-usage-dot{background:var(--md-sys-color-primary);opacity:.7;border-radius:50%;width:7px;height:7px}.qem-upgrades{flex-direction:column;gap:10px;width:100%;margin-bottom:20px;display:flex}.qem-upgrade-card{border:1.5px solid var(--md-sys-color-outline-variant,#cac4d0);background:var(--md-sys-color-surface-container);cursor:pointer;text-align:left;border-radius:20px;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:16px 18px;transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow .18s,border-color .18s;display:flex}.qem-upgrade-card:hover{border-color:var(--md-sys-color-primary);transform:translateY(-2px);box-shadow:0 6px 20px #6750a41f}.qem-upgrade-card:active{transform:scale(.98)}.qem-upgrade-card--highlighted{background:var(--md-sys-color-primary);border-color:var(--md-sys-color-primary)}.qem-upgrade-card--highlighted:hover{border-color:var(--md-sys-color-primary);box-shadow:0 8px 24px #6750a459}.qem-upgrade-card__left{flex-direction:column;align-items:flex-start;gap:4px;min-width:0;display:flex}.qem-upgrade-card__name{color:var(--md-sys-color-text);white-space:nowrap;font-size:.9375rem;font-weight:700}.qem-upgrade-card--highlighted .qem-upgrade-card__name{color:var(--md-sys-color-on-primary,#fff)}.qem-upgrade-card__badge{letter-spacing:.04em;text-transform:uppercase;background:var(--md-sys-color-secondary-container);color:var(--md-sys-color-primary);border-radius:100px;padding:2px 8px;font-size:.6875rem;font-weight:700}.qem-upgrade-card--highlighted .qem-upgrade-card__badge{color:#fff;background:#ffffff38}.qem-upgrade-card__badge--semester{background:var(--md-sys-color-surface-container-high,#ece6f0);color:var(--md-sys-color-text-variant)}.qem-upgrade-card--highlighted .qem-upgrade-card__badge--semester{color:#fffc;background:#ffffff26}.qem-upgrade-card__limit{color:var(--md-sys-color-text-variant);font-size:.8125rem}.qem-upgrade-card--highlighted .qem-upgrade-card__limit{color:#ffffffb8}.qem-upgrade-card__right{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:2px;display:flex}.qem-upgrade-card__price{color:var(--md-sys-color-text);letter-spacing:-.02em;font-size:1.125rem;font-weight:800}.qem-upgrade-card--highlighted .qem-upgrade-card__price{color:#fff}.qem-upgrade-card__price-unit{opacity:.65;font-size:.75rem;font-weight:500}.qem-upgrade-card__upfront{color:var(--md-sys-color-text-variant);font-size:.75rem}.qem-upgrade-card--highlighted .qem-upgrade-card__upfront{color:#fff9}.qem-actions{flex-direction:column;gap:12px;width:100%;display:flex}.qem-btn{cursor:pointer;border-radius:100px;width:100%;padding:16px 24px;font-size:1rem;font-weight:700;transition:transform .2s cubic-bezier(.4,0,.2,1),box-shadow .2s}.qem-btn:active{transform:scale(.96)}.qem-btn--secondary{background-color:var(--md-sys-color-surface-container);color:var(--md-sys-color-text);border:none}.qem-btn--secondary:hover{background-color:var(--md-sys-color-secondary-container)}@media (width<=600px){.qem-overlay{justify-content:stretch;align-items:flex-end;padding:0}.qem-content--desktop{display:none}.qem-content--mobile{text-align:left;border-radius:28px 28px 0 0;align-items:stretch;width:100%;max-width:100%;padding:12px 20px 32px;display:flex}.qem-sheet-handle{background:var(--md-sys-color-outline-variant,#cac4d0);border-radius:2px;flex-shrink:0;width:36px;height:4px;margin:0 auto 20px}.qem-sheet-header{margin-bottom:16px}.qem-sheet-header .qem-title{margin-bottom:4px;font-size:1.25rem}.qem-description--mobile{max-width:none;margin-bottom:0;font-size:.875rem}.qem-usage-inline{color:var(--md-sys-color-primary);font-weight:600}.qem-mobile-table-wrap{border:1.5px solid var(--md-sys-color-outline-variant,#cac4d0);border-radius:16px;width:100%;margin-bottom:20px;overflow-x:auto}.qem-mobile-table{border-collapse:collapse;width:100%;font-size:.875rem}.qem-mobile-table thead tr{background:var(--md-sys-color-surface-container)}.qem-mobile-table th{letter-spacing:.04em;text-transform:uppercase;color:var(--md-sys-color-text-variant);text-align:left;white-space:nowrap;padding:10px 12px;font-size:.75rem;font-weight:700}.qem-mobile-table th:last-child{text-align:right}.qem-mobile-table td{border-top:1px solid var(--md-sys-color-outline-variant,#cac4d0);vertical-align:middle;padding:12px}.qem-mobile-table__row--highlighted{background:color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent)}.qem-mobile-table__name{color:var(--md-sys-color-text);white-space:nowrap;align-items:center;gap:6px;font-weight:700;display:flex}.qem-mobile-table__tag{background:var(--md-sys-color-surface-container-high,#ece6f0);color:var(--md-sys-color-text-variant);letter-spacing:.02em;border-radius:100px;padding:1px 6px;font-size:.6875rem;font-weight:700}.qem-mobile-table__limit{color:var(--md-sys-color-text);text-align:center;font-weight:600}.qem-mobile-table__price{color:var(--md-sys-color-text);white-space:nowrap;letter-spacing:-.01em;font-weight:800}.qem-mobile-table__price-unit{opacity:.6;font-size:.6875rem;font-weight:500}.qem-mobile-table td:last-child{text-align:right}.qem-mobile-table__btn{cursor:pointer;white-space:nowrap;border:1.5px solid var(--md-sys-color-outline-variant,#cac4d0);color:var(--md-sys-color-text);background:0 0;border-radius:100px;padding:7px 14px;font-size:.8125rem;font-weight:700;transition:background .15s,border-color .15s}.qem-mobile-table__btn:active{transform:scale(.95)}.qem-mobile-table__btn--primary{background:var(--md-sys-color-primary);border-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary,#fff)}.qem-btn{padding:14px 24px;font-size:.9375rem}}@keyframes qem-float{0%{transform:translateY(0)}50%{transform:translateY(-12px)}to{transform:translateY(0)}}@keyframes qem-fade-in{0%{opacity:0}to{opacity:1}}@keyframes qem-fade-out{0%{opacity:1}to{opacity:0}}@keyframes qem-slide-up{0%{opacity:0;transform:translateY(40px)scale(.95)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes qem-slide-down{0%{opacity:1;transform:translateY(0)scale(1)}to{opacity:0;transform:translateY(40px)scale(.95)}}@keyframes qem-sheet-up{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}@keyframes qem-sheet-down{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(100%)}}.qem-fade-in{animation:.3s cubic-bezier(.4,0,.2,1) forwards qem-fade-in}.qem-fade-out{animation:.3s cubic-bezier(.4,0,.2,1) forwards qem-fade-out}.qem-slide-up{animation:.4s cubic-bezier(.34,1.56,.64,1) forwards qem-slide-up}.qem-slide-down{animation:.3s cubic-bezier(.4,0,.2,1) forwards qem-slide-down}.qem-sheet-up{animation:.35s cubic-bezier(.34,1.2,.64,1) forwards qem-sheet-up}.qem-sheet-down{animation:.25s cubic-bezier(.4,0,.2,1) forwards qem-sheet-down}.create-flashcards-main{scrollbar-width:none;flex-direction:column;gap:18px;width:100%;max-width:min(100%,1880px);margin-inline:auto;padding-bottom:104px;display:flex;overflow-x:clip}.create-flashcards-main::-webkit-scrollbar{display:none}html.cf-hide-page-scrollbar,body.cf-hide-page-scrollbar{scrollbar-width:none;-ms-overflow-style:none}html.cf-hide-page-scrollbar::-webkit-scrollbar{width:0;height:0;display:none}body.cf-hide-page-scrollbar::-webkit-scrollbar{width:0;height:0;display:none}.create-flashcards-main *{scrollbar-width:none}.create-flashcards-main ::-webkit-scrollbar{width:0;height:0;display:none}.cf-layout-grid{gap:18px;margin-top:-10px;display:grid}.cf-panel{background-color:var(--md-sys-color-surface-container);border:1px solid #79747e33;flex-direction:column;gap:16px;padding:clamp(16px,2.3vw,24px);display:flex}.cf-mode-toggle{background-color:#6750a41f;border-radius:9999px;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:4px;display:grid}.cf-mode-btn,.cf-tab-btn,.cf-type-btn,.cf-option-btn,.cf-pill-btn,.cf-distribution-mode-btn,.cf-difficulty-option,.cf-privacy-option{min-height:48px}.cf-mode-btn{color:var(--md-sys-color-text-variant);border-radius:9999px;font-size:.95rem;font-weight:700}.cf-mode-btn.active{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);box-shadow:0 8px 20px #6750a442}.cf-mode-panel{flex-direction:column;gap:14px;display:flex}.cf-section-header-actions{align-items:center;gap:.625rem;display:flex}.cf-save-deck-btn{align-items:center;gap:.375rem;padding:.375rem .75rem;font-size:.8125rem;display:flex}.cf-mode-panel-animated{will-change:transform, opacity}.cf-block-title-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.cf-block-title-row h2{color:var(--md-sys-color-text);letter-spacing:-.01em;margin:0;font-size:1.25rem}.cf-block-title-row span{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.08em;background-color:#6750a421;border-radius:9999px;padding:4px 10px;font-size:.76rem;font-weight:700}.cf-dropzone{background:radial-gradient(circle at top, #6750a42e, transparent 60%), var(--md-sys-color-surface);text-align:center;border:2px dashed #6750a466;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:clamp(248px,34vh,312px);padding:24px;transition:transform .15s,box-shadow .2s,border-color .2s;display:flex}.cf-dropzone.is-dragging{border-color:#6750a4e6;transform:translateY(-1px);box-shadow:0 14px 28px #6750a433}.cf-drop-icon{color:#6750a4cc}.cf-drop-title{color:var(--md-sys-color-text);overflow-wrap:anywhere;margin:0;font-size:1rem;font-weight:700}.cf-drop-subtitle{color:var(--md-sys-color-text-variant);margin:0;font-size:.9rem}.cf-file-label{text-decoration:none}.cf-composition-card{background:#ffffffb3;border:1px solid #79747e38;border-radius:24px;flex-direction:column;gap:12px;padding:14px;display:flex}.cf-composition-header{justify-content:space-between;align-items:center;gap:10px;display:flex}.cf-composition-header strong{color:var(--md-sys-color-primary);font-size:1.1rem}.cf-field-label{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.1em;margin:0;font-size:.72rem;font-weight:700}.cf-range{--cf-range-progress:0%;appearance:none;background:linear-gradient(90deg, #6750a4f2 0%, #6750a4f2 var(--cf-range-progress), #79747e3d var(--cf-range-progress), #79747e3d 100%);cursor:pointer;border-radius:9999px;width:100%;height:12px;box-shadow:inset 0 1px 2px #0000001f}.cf-range::-webkit-slider-runnable-track{background:0 0;border-radius:9999px;height:12px}.cf-range::-webkit-slider-thumb{appearance:none;border:3px solid var(--md-sys-color-primary);background:var(--md-sys-color-surface);border-radius:50%;width:22px;height:22px;margin-top:-5px;transition:transform .15s,box-shadow .2s;box-shadow:0 5px 14px #6750a457}.cf-range:active::-webkit-slider-thumb{transform:scale(1.06)}.cf-range::-moz-range-track{background:0 0;border:0;border-radius:9999px;height:12px}.cf-range::-moz-range-thumb{border:3px solid var(--md-sys-color-primary);background:var(--md-sys-color-surface);border-radius:50%;width:22px;height:22px;transition:transform .15s,box-shadow .2s;box-shadow:0 5px 14px #6750a457}.cf-range:active::-moz-range-thumb{transform:scale(1.06)}.cf-range-labels{color:var(--md-sys-color-text-variant);letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;margin-top:-2px;font-size:.72rem;font-weight:700;display:flex}.cf-auto-balance-panel{background:linear-gradient(180deg, #6750a414 0%, #6750a408 100%), var(--md-sys-color-surface);border:1px solid #79747e3d;border-radius:16px;flex-direction:column;gap:10px;padding:12px;display:flex}.cf-auto-balance-header{justify-content:space-between;align-items:center;gap:10px;display:flex}.cf-auto-balance-header p{color:var(--md-sys-color-text);letter-spacing:.01em;margin:0;font-size:.88rem;font-weight:800}.cf-auto-ratio-chip{color:var(--md-sys-color-primary);letter-spacing:.1em;background:#6750a41f;border:1px solid #6750a44d;border-radius:9999px;padding:4px 10px;font-size:.73rem;font-weight:800}.cf-auto-count-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid}.cf-auto-count-item{background:var(--md-sys-color-surface);border:1px solid #79747e3d;border-radius:12px;flex-direction:column;gap:2px;padding:8px 9px;display:flex}.cf-auto-count-item span{text-transform:uppercase;letter-spacing:.08em;color:var(--md-sys-color-text-variant);font-size:.7rem;font-weight:700}.cf-auto-count-item strong{font-size:1rem;line-height:1}.cf-auto-count-item.flash strong{color:#1d4ed8}.cf-auto-count-item.mcq strong{color:#b45309}.cf-auto-count-item.fill strong{color:#7c3aed}.cf-auto-count-item.tf strong{color:#047857}.cf-auto-balance-note{color:var(--md-sys-color-text-variant);margin:0;font-size:.78rem;font-weight:700}.cf-distribution-toggle{background-color:#1c1b1f0d;border-radius:12px;gap:6px;padding:4px;display:flex}.cf-distribution-mode-btn{color:var(--md-sys-color-text-variant);background:0 0;border:1px solid #0000;border-radius:10px;flex:1;justify-content:center;align-items:center;gap:6px;font-size:.84rem;font-weight:700;display:inline-flex}.cf-distribution-mode-btn.active{background:var(--md-sys-color-surface);color:var(--md-sys-color-text);border-color:#79747e33;box-shadow:0 2px 8px #00000014}.cf-status-box{border:1px solid #0000;border-radius:14px;align-items:center;gap:8px;padding:10px 12px;font-size:.87rem;font-weight:700;display:flex}.cf-status-box.info{color:#2563eb;background-color:#2563eb1a;border-color:#2563eb3d}.cf-status-box.success{color:#16a34a;background-color:#16a34a1a;border-color:#16a34a3d}.cf-status-box.warning{color:#dc2626;background-color:#dc26261a;border-color:#dc26263d}.cf-mix-list{flex-direction:column;gap:6px;display:flex}.cf-mix-row{background-color:#1c1b1f08;border:1px solid #79747e38;border-radius:14px;justify-content:space-between;align-items:center;gap:6px;padding:8px 10px;display:flex}.cf-mix-row-left{align-items:center;gap:8px;display:flex}.cf-mix-icon{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:inline-flex}.cf-mix-copy p{color:var(--md-sys-color-text);margin:0;font-size:.84rem;font-weight:700;line-height:1.2}.cf-mix-copy span{color:var(--md-sys-color-text-variant);font-size:.73rem}.cf-stepper-pill{background-color:#1c1b1f14;border:1px solid #79747e33;border-radius:9999px;align-items:center;gap:6px;padding:3px;display:inline-flex}.cf-stepper-pill button{background-color:var(--md-sys-color-surface);width:28px;height:28px;min-height:28px;color:var(--md-sys-color-text);border:1px solid #79747e40;border-radius:9999px;justify-content:center;align-items:center;display:inline-flex}.cf-stepper-pill button:disabled{opacity:.35;cursor:not-allowed}.cf-stepper-pill strong{text-align:center;min-width:18px;color:var(--md-sys-color-text);font-size:.88rem}.cf-progress-track{background:#79747e33;border-radius:9999px;height:8px;display:flex;overflow:hidden}.cf-progress-track .seg{height:100%;transition:width .2s}.cf-progress-track .seg-flash{background:#3b82f6}.cf-progress-track .seg-mcq{background:#f59e0b}.cf-progress-track .seg-tf{background:#10b981}.cf-progress-track .seg-fill{background:#8b5cf6}.cf-progress-track .seg-empty{background:#ffffff59}.cf-difficulty-block,.cf-privacy-block,.cf-runmode-block{flex-direction:column;gap:8px;display:flex}.cf-difficulty-block{margin-top:12px}.cf-privacy-block,.cf-runmode-block{margin-top:10px}.cf-subtle{color:var(--md-sys-color-text-variant);margin:0;font-size:.9rem}.cf-difficulty-grid,.cf-privacy-grid{grid-template-columns:1fr;gap:8px;display:grid}.cf-difficulty-option,.cf-privacy-option{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);text-align:left;border:1px solid #79747e4d;border-radius:14px;grid-template-columns:32px minmax(0,1fr) 18px;align-items:center;gap:9px;min-height:44px;padding:9px 10px;transition:border-color .2s,background-color .2s,box-shadow .2s;display:grid}.cf-difficulty-option:hover,.cf-privacy-option:hover{border-color:#6750a473}.cf-difficulty-option.active,.cf-privacy-option.active{border-color:var(--md-sys-color-primary);background-color:#6750a414;box-shadow:0 0 0 2px #6750a41f}.cf-option-icon{width:32px;height:32px;color:var(--md-sys-color-text-variant);background-color:#79747e14;border:1px solid #79747e38;border-radius:10px;justify-content:center;align-items:center;display:inline-flex}.cf-difficulty-option.active .cf-option-icon,.cf-privacy-option.active .cf-option-icon{background-color:#6750a424;border-color:#6750a447}.cf-option-copy{align-items:center;min-width:0;display:flex}.cf-option-copy strong{color:var(--md-sys-color-text);font-size:.9rem;line-height:1.2}.cf-option-copy span{display:none}.cf-option-radio{background-color:var(--md-sys-color-surface);border:2px solid #79747e80;border-radius:50%;justify-self:end;width:16px;height:16px;transition:border-color .2s,background-color .2s;position:relative}.cf-option-radio:after{content:"";background-color:var(--md-sys-color-primary);opacity:0;border-radius:50%;width:7px;height:7px;margin:auto;transition:opacity .2s,transform .2s;position:absolute;inset:0;transform:scale(.85)}.cf-difficulty-option.active .cf-option-radio,.cf-privacy-option.active .cf-option-radio{border-color:var(--md-sys-color-primary);background-color:#6750a41a}.cf-difficulty-option.active .cf-option-radio:after,.cf-privacy-option.active .cf-option-radio:after{opacity:1;transform:scale(1)}.cf-pill-btn{border:1px solid #0000;border-radius:9999px;justify-content:center;align-items:center;gap:8px;padding:0 18px;font-size:.92rem;font-weight:700;transition:transform .15s,box-shadow .2s,background-color .2s,color .2s;display:inline-flex}.cf-primary-btn{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);box-shadow:0 10px 22px #6750a43d}.cf-secondary-btn{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border-color:#79747e47}.cf-builder-message{color:var(--md-sys-color-text);background-color:#6750a41a;border:1px solid #6750a43d;border-radius:16px;margin:0;padding:11px 13px;font-size:.9rem}.cf-generation-status{background:linear-gradient(180deg, #6750a41a 0%, #6750a40a 100%), var(--md-sys-color-surface);border:1px solid #6750a43d;border-radius:14px;flex-direction:column;gap:9px;padding:10px 12px;display:flex}.cf-generation-status-head{color:var(--md-sys-color-primary);align-items:center;gap:8px;display:flex}.cf-generation-status-head p{color:var(--md-sys-color-text);margin:0;font-size:.88rem;font-weight:800}.cf-generation-steps{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.cf-generation-step{color:var(--md-sys-color-text-variant);padding-left:16px;font-size:.79rem;font-weight:600;animation:1.45s ease-in-out infinite cf-stepPulse;position:relative}.cf-generation-step:before{content:"";opacity:.55;background:currentColor;border-radius:50%;width:7px;height:7px;position:absolute;top:.38em;left:0}.cf-card-loading-list{flex-direction:column;gap:8px;display:flex}.cf-card-loading-item{background:linear-gradient(90deg,#79747e14 0%,#79747e29 45%,#79747e14 100%) 0 0/220% 100%;border:1px solid #79747e33;border-radius:18px;height:64px;animation:1.1s linear infinite cf-shimmer}.cf-preview-loading{background:radial-gradient(circle at top, #6750a424, transparent 70%), var(--md-sys-color-surface);text-align:center;border:1px dashed #6750a466;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:8px;min-height:260px;padding:20px;display:flex}.cf-preview-loading p{color:var(--md-sys-color-text);margin:0;font-size:.96rem;font-weight:700}.cf-preview-loading span{color:var(--md-sys-color-text-variant);font-size:.84rem}.cf-spin{animation:.9s linear infinite cf-spin}@keyframes cf-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes cf-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@keyframes cf-stepPulse{0%,to{color:var(--md-sys-color-text-variant)}45%{color:var(--md-sys-color-text)}}@keyframes cf-pressIn{0%{transform:scale(.985)}to{transform:scale(1)}}.cf-field{flex-direction:column;gap:7px;display:flex}.cf-type-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.cf-type-btn{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text);border:1px solid #79747e47;border-radius:9999px;padding:0 14px;font-weight:700}.cf-type-btn.active{background-color:var(--md-sys-color-primary);border-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary)}.cf-input,.cf-textarea{background-color:var(--md-sys-color-surface);width:100%;color:var(--md-sys-color-text);min-height:48px;font:inherit;border:1px solid #79747e4d;border-radius:16px;padding:12px 14px}.cf-textarea{resize:vertical;min-height:118px}.cf-mcq-editor-stack{flex-direction:column;gap:6px;display:flex}.cf-mcq-option-row{background-color:var(--md-sys-color-surface);border:1px solid #79747e38;border-radius:12px;grid-template-columns:16px 26px minmax(0,1fr);align-items:center;gap:7px;padding:6px 8px;transition:border-color .2s,box-shadow .2s;display:grid}.cf-mcq-option-row:focus-within{border-color:#6750a470;box-shadow:0 0 0 2px #6750a41f}.cf-mcq-correct-radio{width:14px;height:14px;accent-color:var(--md-sys-color-primary);cursor:pointer;margin:0}.cf-mcq-option-tag{width:26px;height:26px;color:var(--md-sys-color-text-variant);background-color:#79747e14;border:1px solid #79747e40;border-radius:9px;justify-content:center;align-items:center;font-size:.72rem;font-weight:800;display:inline-flex}.cf-mcq-option-input{border-radius:10px;min-height:36px;padding:8px 10px;font-size:.9rem}.cf-mcq-option-controls{gap:8px;margin-top:2px}.cf-mcq-option-controls .cf-pill-btn{border-radius:10px;min-height:38px;padding:0 12px;font-size:.82rem;font-weight:700}.cf-action-row{flex-wrap:wrap;gap:10px;display:flex}.cf-card-list{flex-direction:column;gap:10px;display:flex}.cf-section-header{justify-content:space-between;align-items:center;gap:14px;display:flex}.cf-section-header h2{letter-spacing:-.01em;margin:0;font-size:1.16rem}.cf-section-header span{color:var(--md-sys-color-text-variant);white-space:nowrap;background-color:#6750a41a;border-radius:9999px;padding:5px 10px;font-size:.8rem}.cf-created-list{flex-direction:column;gap:10px;max-height:320px;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.cf-created-item{background-color:var(--md-sys-color-surface);border:1px solid #79747e38;border-radius:20px;flex-wrap:wrap;justify-content:space-between;gap:10px;padding:12px;display:flex}.cf-created-copy{flex:1;gap:10px;min-width:0;display:flex}.cf-item-number{background-color:var(--md-sys-color-secondary-container);width:32px;height:32px;color:var(--md-sys-color-on-secondary-container);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;font-size:.82rem;font-weight:800;display:inline-flex}.cf-item-title{color:var(--md-sys-color-text);margin:0;font-size:.94rem;font-weight:700}.cf-item-title-markdown{max-height:2.65em;overflow:hidden}.cf-item-title-markdown>*{font-size:inherit;font-weight:inherit;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;margin:0;line-height:1.35;display:-webkit-box;overflow:hidden}.cf-item-title-markdown>:not(:first-child){display:none}.cf-item-title-markdown code{font-size:.85em}.cf-item-subtitle{color:var(--md-sys-color-text-variant);text-transform:uppercase;letter-spacing:.08em;margin:4px 0 0;font-size:.78rem}.cf-item-actions{flex-wrap:nowrap;align-self:center;align-items:center;gap:8px;display:flex}.cf-inline-btn{width:34px;min-width:34px;height:34px;min-height:34px;color:var(--md-sys-color-text);background-color:#0000;border:1px solid #79747e57;border-radius:9999px;flex:0 0 34px;justify-content:center;align-items:center;padding:0;display:inline-flex}.cf-inline-btn svg{display:block}.cf-inline-btn.danger{color:#8f1811;border-color:#b3261e61}.cf-tabs{gap:8px;padding-bottom:2px;display:flex;overflow-x:auto}.cf-tab-btn{background-color:var(--md-sys-color-surface);color:var(--md-sys-color-text-variant);white-space:nowrap;border:1px solid #79747e40;border-radius:9999px;padding:0 14px;font-weight:700}.cf-tab-btn.active{background-color:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);border-color:#0000}.cf-preview-stage{--cf-preview-card-width:min(100%, 72rem);--cf-preview-card-height:clamp(20rem, 56vh, 27rem);min-height:calc(var(--cf-preview-card-height) + .5rem);place-items:center;display:grid}.cf-preview-motion-wrap{place-items:center;width:100%;display:grid}.cf-preview-frame-shell{width:var(--cf-preview-card-width);margin-inline:auto;position:relative}.cf-preview-expand-btn{width:2.1rem;min-height:2.1rem;color:var(--md-sys-color-text);z-index:6;background:#ffffffd9;border:1px solid #79747e5c;border-radius:9999px;justify-content:center;align-items:center;display:inline-flex;position:absolute;top:.9rem;right:.9rem}.cf-preview-card-frame{width:var(--cf-preview-card-width);min-height:var(--cf-preview-card-height);height:var(--cf-preview-card-height);margin-inline:auto}.cf-empty-preview{min-height:var(--cf-preview-card-height);height:var(--cf-preview-card-height);background-color:var(--md-sys-color-surface);text-align:center;border:1px dashed #79747e59;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:20px;display:flex}.cf-empty-preview p{color:var(--md-sys-color-text-variant);margin:0}.cf-study-preview-container{width:var(--cf-preview-card-width);height:var(--cf-preview-card-height);min-height:var(--cf-preview-card-height);perspective:100rem;transform-style:preserve-3d;-webkit-transform-style:preserve-3d;cursor:pointer;touch-action:manipulation;background:0 0;border:0;margin-inline:auto;display:block;position:relative}.cf-study-inner{width:100%;height:100%;transform-style:preserve-3d;-webkit-transform-style:preserve-3d;will-change:transform;position:relative}.cf-study-inner.flipped{transform:rotateY(180deg)}.cf-study-face{backface-visibility:hidden;width:100%;height:100%;transform-style:preserve-3d;-webkit-transform-style:preserve-3d;background-color:var(--md-sys-color-surface);border:2px solid #79747e85;border-radius:1.5rem;flex-direction:column;justify-content:flex-start;align-items:center;padding:1rem 1rem .75rem;display:flex;position:absolute;inset:0;overflow:hidden;box-shadow:0 10px 18px #0000001c}.cf-study-front{transform:rotateY(0)translateZ(.1px)}.cf-study-back{border-color:#6750a48c;transform:rotateY(180deg)translateZ(.1px)}.cf-study-face-label{text-align:center;text-transform:uppercase;letter-spacing:.08em;width:100%;color:var(--md-sys-color-text-variant);flex-shrink:0;margin-bottom:.35rem;font-size:.76rem;font-weight:700;display:block}.cf-study-topic-badge{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:9999px;flex-shrink:0;justify-content:center;align-self:center;align-items:center;margin-bottom:.6rem;padding:.25rem .65rem;font-size:.72rem;font-weight:700;display:inline-flex}.cf-study-content-shell{flex:1 1 0;width:100%;max-width:48rem;min-height:0;margin:0 auto;display:flex;overflow:hidden}.cf-study-text-shell{scrollbar-gutter:stable;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;padding:.25rem .4rem;display:flex;overflow:hidden auto}.cf-study-text-shell::-webkit-scrollbar{width:7px}.cf-study-text-shell::-webkit-scrollbar-thumb{background:#49454f59;border-radius:9999px}.cf-study-text-shell.overflowing{justify-content:center;align-items:center;padding-top:.25rem;padding-bottom:.25rem}.cf-study-text{text-align:center;width:100%;max-width:100%;font-size:var(--adaptive-font-size,clamp(1.32rem, 1.2vw + .88rem, 2.15rem));color:var(--md-sys-color-text);overflow-wrap:break-word;word-break:break-word;-webkit-hyphens:auto;hyphens:auto;margin:0;font-weight:600;line-height:1.52;display:block}.cf-study-text-shell.overflowing .cf-study-text{text-align:center;font-size:max(var(--adaptive-font-size,.9rem), .9rem);line-height:1.58}.cf-study-markdown>:first-child{margin-top:0}.cf-study-markdown>:last-child{margin-bottom:0}.cf-study-markdown p{margin:.6rem 0}.cf-study-markdown ul,.cf-study-markdown ol{text-align:left;max-width:92%;margin:.7rem auto;padding-left:1.5rem}.cf-study-markdown li{margin:.3rem 0}.cf-study-markdown h1,.cf-study-markdown h2,.cf-study-markdown h3,.cf-study-markdown h4,.cf-study-markdown h5,.cf-study-markdown h6{text-align:center;margin:.6rem 0;line-height:1.35}.cf-study-markdown code{color:var(--md-sys-color-on-secondary-container);background:#e8def8d9;border-radius:.4rem;padding:.15rem .4rem;font-size:.92em}.cf-study-markdown pre{background:#f3edf7e6;border-radius:.75rem;max-height:min(38vh,13rem);margin:.85rem 0;padding:.8rem;overflow:auto}.cf-study-markdown pre code{background:0 0;padding:0}.cf-study-hint{text-align:center;color:var(--md-sys-color-text-variant);background:linear-gradient(to bottom, transparent 0%, var(--md-sys-color-surface) 40%);flex-shrink:0;width:min(100%,48rem);margin-top:.4rem;padding:.4rem 0 0;font-size:.8rem;font-weight:600}.cf-study-preview-container,.cf-mcq-preview,.cf-text-preview,.cf-fitb-preview,.cf-preview-loading,.cf-empty-preview{transition:box-shadow .25s,border-color .25s,transform .25s}.cf-study-preview-container:hover,.cf-mcq-preview:hover,.cf-text-preview:hover,.cf-fitb-preview:hover{box-shadow:0 18px 34px #0f172a21}.cf-mcq-preview,.cf-text-preview,.cf-fitb-preview{background-color:var(--md-sys-color-surface);text-align:center;border:1px solid #79747e3d;border-radius:28px;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:18px;display:flex;overflow:hidden}.cf-preview-question{color:var(--md-sys-color-text);margin:0;font-size:1.02rem;font-weight:700;line-height:1.45}.cf-preview-markdown>:first-child{margin-top:0}.cf-preview-markdown>:last-child{margin-bottom:0}.cf-preview-question-shell{flex:1;justify-content:center;align-items:center;width:100%;max-width:100%;min-height:0;display:flex}.cf-preview-question-shell .cf-study-text-shell{padding:.2rem .45rem}.cf-mcq-preview{text-align:center;justify-content:center;align-items:center;gap:.62rem;padding:14px 14px 12px}.cf-text-preview{justify-content:flex-start;gap:.72rem;padding:14px 16px 12px}.cf-text-preview .cf-preview-question-shell{flex:0 auto;width:min(100%,46rem);min-height:0;max-height:none}.cf-text-preview .cf-preview-question-shell .cf-study-text-shell{padding-inline:clamp(.95rem,1.6vw,1.45rem)}.cf-text-preview .cf-preview-question-shell .cf-study-text{max-width:100%;margin-inline:auto}.cf-option-list{flex-direction:column;gap:8px;width:100%;max-width:46rem;min-height:0;display:flex;overflow-y:auto}.cf-mcq-preview .cf-preview-question-shell{text-align:center;flex:0 auto;justify-content:center;align-items:center;min-height:0;max-height:none}.cf-mcq-preview .cf-preview-question-shell .cf-study-text-shell{justify-content:center;align-items:center;padding:.06rem .35rem}.cf-mcq-preview .cf-preview-question-shell .cf-study-text{text-align:center;text-align-last:center;text-justify:inter-word;max-width:96%;margin-inline:auto;font-size:clamp(.8rem,.35vw + .72rem,1rem);line-height:1.46}.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h1,.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h2,.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h3,.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h4,.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h5,.cf-mcq-preview .cf-preview-question-shell .cf-study-markdown h6{margin:.35rem 0;font-size:1em}.cf-mcq-preview .cf-option-list{flex:0 auto;width:min(100%,46rem);max-height:none;margin-top:0;padding-top:.1rem}.cf-option-btn{color:var(--md-sys-color-text);text-align:center;background-color:#6750a40d;border:1px solid #79747e3d;border-radius:18px;grid-template-columns:24px 1fr;align-items:center;gap:8px;padding:8px 10px;font-size:.86rem;font-weight:600;display:grid}.cf-option-btn span:last-child{text-align:center;justify-self:center;width:100%}.cf-option-btn.is-selected{background-color:#6750a429;border-color:#6750a4b3;animation:.18s cf-pressIn}.cf-option-btn.correct{color:#166534;background-color:#16a34a24;border-color:#16a34aad}.cf-option-btn.incorrect{color:#991b1b;background-color:#dc262624;border-color:#dc2626ad}.cf-mcq-feedback{border:1px solid #0000;border-radius:12px;width:min(100%,46rem);margin:0;padding:8px 10px;font-size:.86rem;font-weight:700}.cf-mcq-feedback.neutral{color:var(--md-sys-color-text-variant);background-color:#79747e1a;border-color:#79747e33}.cf-mcq-feedback.correct{color:#166534;background-color:#16a34a1f;border-color:#16a34a47}.cf-mcq-feedback.incorrect{color:#991b1b;background-color:#dc26261f;border-color:#dc262647}.cf-fitb-inline-wrap{color:var(--md-sys-color-text);text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;width:100%;font-size:1.03rem;font-weight:600;line-height:1.5;display:flex}.cf-fitb-inline-segment{display:inline}.cf-fitb-inline-segment>*{margin:0;display:inline}.cf-fitb-inline-input{background:var(--md-sys-color-surface);width:clamp(120px,22vw,180px);min-height:40px;color:var(--md-sys-color-text);vertical-align:baseline;text-align:center;border:1px solid #79747e6b;border-radius:10px;padding:7px 10px;font-size:1rem;font-weight:600;line-height:1.2;display:inline-block}.cf-text-preview .cf-textarea{max-width:48rem;min-height:130px}.cf-preview-nav{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}.cf-mobile-spacer{height:90px}.cf-deck-modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1200;background-color:#1c1b1fb8;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.cf-deck-modal-content{width:min(100%,82rem);box-shadow:none;background:0 0;border:0;border-radius:0;flex-direction:column;gap:.72rem;padding:0;display:flex}.cf-deck-modal-header{justify-content:space-between;align-items:flex-start;gap:.75rem;display:flex}.cf-deck-modal-header h3{color:var(--md-sys-color-text);margin:0;font-size:1.18rem}.cf-deck-modal-header p{color:var(--md-sys-color-text-variant);margin:.2rem 0 0;font-size:.9rem}.cf-deck-modal-close{background:var(--md-sys-color-surface);width:2.1rem;min-height:2.1rem;color:var(--md-sys-color-text);border:1px solid #79747e57;border-radius:9999px;justify-content:center;align-items:center;display:inline-flex}.cf-deck-modal-stage{place-items:center;width:100%;display:grid}.cf-deck-modal-stage .cf-preview-card-frame{width:min(86%,79rem);height:min(81vh,49rem);min-height:33rem}.cf-deck-modal-stage .cf-mcq-preview,.cf-deck-modal-stage .cf-fitb-preview,.cf-deck-modal-stage .cf-text-preview{background:var(--md-sys-color-surface);border:1px solid #79747e3d;border-radius:1.5rem;padding:1rem;box-shadow:0 10px 18px #0000001c}.cf-deck-modal-stage .cf-study-face{padding:1.55rem 1.4rem 1rem}.cf-deck-modal-stage .cf-study-face-label{font-size:.95rem}.cf-deck-modal-stage .cf-study-topic-badge{padding:.4rem .9rem;font-size:.84rem}.cf-deck-modal-stage .cf-study-text{font-size:var(--adaptive-font-size,clamp(1.45rem, 1.3vw + 1rem, 2.55rem));line-height:1.58}.cf-deck-modal-stage .cf-study-markdown pre,.cf-deck-modal-stage .md-renderer-root pre{width:100%;max-height:min(74vh,34rem)}.cf-deck-modal-stage .md-renderer-mermaid{width:100%;max-height:min(74vh,34rem);padding:1rem}.cf-deck-modal-stage .cf-mcq-preview .cf-preview-question-shell .cf-study-text{font-size:clamp(1rem,.7vw + .82rem,1.35rem);line-height:1.52}.cf-deck-modal-stage .cf-text-preview{justify-content:center;gap:.5rem;padding:.9rem 1.35rem .85rem}.cf-deck-modal-stage .cf-text-preview .cf-preview-question-shell{flex:0 auto;width:min(100%,52rem);min-height:0;max-height:none}.cf-deck-modal-stage .cf-text-preview .cf-preview-question-shell .cf-study-text-shell{padding-inline:clamp(1.45rem,2.8vw,2.7rem)}.cf-deck-modal-stage .cf-mcq-preview{gap:.5rem}.cf-deck-modal-stage .cf-option-list{gap:.5rem;width:min(100%,72rem)}.cf-deck-modal-stage .cf-mcq-feedback{margin-top:.08rem}.cf-deck-modal-nav{justify-content:flex-end;gap:.6rem;display:flex}button:active,.cf-pill-btn:active,.cf-inline-btn:active,.cf-option-btn:active,.cf-tab-btn:active,.cf-mode-btn:active,.cf-type-btn:active,.cf-distribution-mode-btn:active,.cf-difficulty-option:active,.cf-privacy-option:active,.cf-stepper-pill button:active{transform:scale(.95)}.cf-mode-btn:focus,.cf-tab-btn:focus,.cf-type-btn:focus,.cf-option-btn:focus,.cf-inline-btn:focus,.cf-pill-btn:focus,.cf-distribution-mode-btn:focus,.cf-difficulty-option:focus,.cf-privacy-option:focus,.cf-stepper-pill button:focus,.cf-input:focus,.cf-textarea:focus,.cf-fitb-inline-input:focus{outline-offset:1px;outline:2px solid #6750a457}@media (width>=768px){.cf-difficulty-grid,.cf-privacy-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cf-type-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (width>=1120px){.cf-layout-grid{grid-template-columns:minmax(0,.98fr) minmax(0,1.02fr);align-items:start;gap:clamp(18px,1.8vw,28px)}.cf-layout-grid>.cf-panel:last-child{margin-left:clamp(8px,.9vw,14px)}}@media (width<=900px){.cf-preview-stage{--cf-preview-card-height:21rem}}@media (width<=640px){.cf-composition-header{flex-direction:column;align-items:flex-start}.cf-distribution-toggle{flex-direction:column}.cf-auto-count-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cf-mix-row{flex-direction:column;align-items:stretch}.cf-mix-row-left{width:100%}.cf-stepper-pill{justify-content:space-between;width:100%}.cf-preview-stage{--cf-preview-card-height:18.25rem}.cf-deck-modal-content{padding:0}.cf-deck-modal-stage .cf-preview-card-frame{height:min(66vh,34rem);min-height:24rem}.cf-deck-modal-nav{justify-content:stretch}.cf-deck-modal-nav .cf-pill-btn{flex:1}.cf-study-face{padding:1rem .8rem .75rem}}@media (width>=1024px){.cf-mobile-spacer{display:none}}.cf-mode-toggle.three-cols{grid-template-columns:repeat(3,minmax(0,1fr))}.cf-deck-title-row{align-items:flex-end;gap:10px;display:flex}.cf-deck-title-field{flex-direction:column;flex:1;gap:6px;min-width:0;display:flex}.cf-deck-title-input{border-radius:14px;min-height:44px;padding:10px 14px;font-size:1rem;font-weight:700}.cf-save-deck-btn{white-space:nowrap;flex-shrink:0;min-height:44px;padding:0 20px;font-size:.88rem}.cf-fork-ai-intro{flex-direction:column;gap:6px;display:flex}.cf-fork-ai-badge{letter-spacing:.1em;text-transform:uppercase;color:var(--md-sys-color-primary);background:#6750a41a;border:1px solid #6750a43d;border-radius:9999px;align-items:center;gap:6px;width:fit-content;margin:0;padding:4px 12px;font-size:.78rem;font-weight:800;display:inline-flex}.cf-dropzone-compact{gap:8px;min-height:clamp(120px,18vh,168px);padding:16px}.cf-dropzone-compact .cf-drop-title{font-size:.9rem}:root{--study-bg:#fffbfe;--study-surface:#fff;--study-surface-container:#f3edf7;--study-primary:#6750a4;--study-on-primary:#fff;--study-secondary-container:#e8def8;--study-on-secondary-container:#1d192b;--study-outline:#79747e;--study-text:#1c1b1f;--study-text-variant:#49454f;--study-error:#b3261e;--study-success:#16a34a;--radius-xl:2rem;--radius-2xl:3rem;--radius-pill:9999px;--shadow-sm:0 1px 3px #0000001f, 0 1px 2px #0000003d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--shadow-xl:0 20px 25px -5px #0000001a, 0 10px 10px -5px #0000000a}.study-page-container{background-color:var(--study-bg);height:100vh;max-height:100vh;color:var(--study-text);width:100%;font-family:Inter,system-ui,-apple-system,sans-serif;display:flex;overflow:hidden}@media (width>=1024px){.study-page-container{padding-left:96px}}.study-page{flex-direction:column;width:100%;height:100%;display:flex;position:relative}.study-progress-root{background:var(--study-surface-container);z-index:1200;width:100%;height:4px;position:absolute;top:0;left:0}.study-progress-fill{background:var(--study-primary);border-radius:0 4px 4px 0;height:100%;transition:width .6s cubic-bezier(.34,1.56,.64,1)}.study-layout-root{flex:1;grid-template-rows:1fr;grid-template-columns:1fr;gap:1rem;width:100%;max-width:1600px;min-height:0;margin:0 auto;padding:1rem;display:grid}@media (width>=1024px){.study-layout-root{grid-template-columns:1fr 320px;gap:2rem;padding:1.5rem 2rem}}.study-main-content{flex-direction:column;gap:1rem;min-width:0;height:100%;display:flex;position:relative}.study-sidebar{flex-direction:column;gap:1.5rem;padding-right:.5rem;display:none;overflow-y:auto}.study-sidebar::-webkit-scrollbar{width:4px}.study-sidebar::-webkit-scrollbar-thumb{background:var(--study-secondary-container);border-radius:4px}@media (width>=1024px){.study-sidebar{display:flex}}.sidebar-section{background:var(--study-surface-container);border-radius:var(--radius-xl);flex-direction:column;gap:1rem;padding:1.25rem;display:flex}.sidebar-section h3{text-transform:uppercase;letter-spacing:.15em;color:var(--study-text-variant);margin:0;font-size:.8rem;font-weight:700}.recommended-list{flex-direction:column;gap:.75rem;display:flex}.recommended-card{background:var(--study-surface);cursor:pointer;color:inherit;box-shadow:var(--shadow-sm);border:1px solid #0000;border-radius:1rem;flex-direction:column;gap:.25rem;padding:1rem;text-decoration:none;transition:all .2s cubic-bezier(.175,.885,.32,1.275);display:flex}.recommended-card:hover{box-shadow:var(--shadow-md);border-color:var(--study-primary);transform:translateY(-2px)}.recommended-card h4{color:var(--study-text);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.95rem;font-weight:600;overflow:hidden}.recommended-meta{color:var(--study-text-variant);gap:.5rem;font-size:.75rem;display:flex}.study-header{background:var(--study-surface-container);border-radius:var(--radius-pill);flex-shrink:0;align-items:center;gap:1rem;padding:.5rem 1rem;display:flex}.header-back-button{background:var(--study-surface);cursor:pointer;width:32px;height:32px;color:var(--study-primary);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;transition:all .2s;display:flex}.header-back-button:hover{background:var(--study-secondary-container);transform:scale(1.05)}.header-title-wrap{flex:1;min-width:0}.header-title-wrap h1{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1rem;font-weight:700;overflow:hidden}.study-card-zone{perspective:1000px;flex:1;min-height:0;display:flex;position:relative}.study-card-shell{width:100%;transform-style:preserve-3d;height:100%;position:relative}.study-card-face{backface-visibility:hidden;background:var(--study-surface);border-radius:var(--radius-xl);width:100%;height:100%;box-shadow:var(--shadow-lg);border:1px solid var(--study-surface-container);flex-direction:column;padding:1.5rem;display:flex;position:absolute}.study-card-face.front.clickable{cursor:pointer}.study-card-face.back{background:var(--study-surface-container);transform:rotateY(180deg)}.card-meta-row{flex-shrink:0;justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.face-label{text-transform:uppercase;letter-spacing:.1em;color:var(--study-text-variant);font-size:.7rem;font-weight:700}.card-progress-copy{color:var(--study-primary);background:var(--study-secondary-container);border-radius:var(--radius-pill);padding:.25rem .6rem;font-size:.75rem;font-weight:600}.topic-badge{display:none;position:absolute;top:1.25rem;right:1.5rem}@media (width>=640px){.topic-badge{background:var(--study-surface-container);color:var(--study-text-variant);border-radius:var(--radius-pill);padding:.35rem .85rem;font-size:.7rem;font-weight:600;display:block;top:1.25rem;right:1.5rem}}.study-card-content{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;padding:.5rem;display:flex;overflow-y:auto}.study-card-content::-webkit-scrollbar{width:4px}.study-card-content::-webkit-scrollbar-thumb{background:var(--study-surface-container);border-radius:4px}.flashcard-text-shell{width:100%;max-width:800px}.flashcard-text{font-size:var(--adaptive-font-size,1.5rem);margin:0;font-weight:700;line-height:1.4;transition:font-size .2s}.flip-hint{color:var(--study-text-variant);background:var(--study-surface-container);border-radius:var(--radius-pill);flex-shrink:0;margin-top:1rem;padding:.4rem .8rem;font-size:.75rem}.study-bottom-bar{background:var(--study-surface-container);border-radius:var(--radius-xl);flex-direction:column;flex-shrink:0;align-items:center;gap:.5rem;padding:.75rem;display:flex}.pill-button{border-radius:var(--radius-pill);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.9rem;font-weight:700;transition:all .2s cubic-bezier(.175,.885,.32,1.275);display:flex}.pill-button.primary{background:var(--study-primary);color:var(--study-on-primary);box-shadow:0 4px 12px #6750a440}.flashcard-rating-group{justify-content:center;gap:.5rem;width:100%;display:flex}.mcq-layout-shell{flex-direction:column;align-items:center;gap:1.25rem;width:100%;display:flex}.mcq-options-grid{grid-template-columns:1fr;gap:.6rem;width:100%;max-width:600px;display:grid}@media (width>=768px) and (height>=700px){.mcq-options-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}}.mcq-option-button{background:var(--study-surface);border:2px solid var(--study-surface-container);text-align:left;cursor:pointer;border-radius:1rem;align-items:center;gap:.75rem;padding:.85rem 1rem;font-family:inherit;font-size:.95rem;line-height:1.4;transition:all .2s;display:flex}.mcq-option-prefix{background:var(--study-surface-container);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:.75rem;font-weight:800;display:flex}.mcq-feedback{border-radius:var(--radius-pill);margin:0;padding:.5rem 1rem;font-size:.85rem;font-weight:600}.mcq-feedback.correct{color:var(--study-success);background:#e6f4ea}.mcq-feedback.incorrect{color:var(--study-error);background:#fce8e6}.fib-input-row{gap:.5rem;width:100%;max-width:500px;display:flex}.fib-input{border-radius:var(--radius-pill);border:2px solid var(--study-surface-container);background:var(--study-surface);flex:1;padding:.75rem 1.25rem;font-family:inherit;font-size:1rem}.fib-input:focus{border-color:var(--study-primary);outline:none}.study-summary-zone{justify-content:center;align-items:center;width:100%;height:100%;padding:1rem;display:flex;overflow-y:auto}.summary-card{background:var(--study-surface);border-radius:var(--radius-2xl);text-align:center;width:100%;max-width:500px;box-shadow:var(--shadow-xl);flex-direction:column;gap:1.5rem;padding:2rem;display:flex}.summary-card h2{color:var(--study-primary);margin:0;font-size:1.75rem;font-weight:800}.summary-chip-grid{grid-template-columns:repeat(2,1fr);gap:.75rem;display:grid}.summary-chip{border-radius:1.25rem;flex-direction:column;gap:.25rem;padding:1rem;font-weight:700;display:flex}.summary-quote{color:var(--study-text-variant);margin:0;font-size:.9rem;font-style:italic;line-height:1.5}@media (width<=640px){.study-layout-root{gap:.75rem;padding:.75rem}.study-card-face{padding:1.25rem}.flashcard-rating-group{grid-template-columns:1fr 1fr;display:grid}.flashcard-rating-group .pill-button:last-child{grid-column:span 2}}.contact-container{max-width:800px;margin:0 auto;padding:40px 20px}.contact-header{text-align:center;margin-bottom:40px}.contact-header h1{font-size:var(--display-medium-size,2.5rem);color:var(--md-sys-color-on-surface);margin-bottom:12px;font-weight:700}.contact-header p{color:var(--md-sys-color-on-surface-variant);font-size:1.1rem}.contact-card{background-color:var(--md-sys-color-surface-container-low);box-shadow:var(--shadow-2);margin-bottom:32px;padding:32px}.contact-form{flex-direction:column;gap:20px;display:flex}.form-group{flex-direction:column;gap:8px;display:flex}.form-group label{color:var(--md-sys-color-on-surface);font-size:.9rem;font-weight:600}.form-group input,.form-group select,.form-group textarea{border:1px solid var(--md-sys-color-outline-variant);background-color:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);border-radius:12px;padding:12px 16px;font-family:inherit;font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--md-sys-color-primary);box-shadow:0 0 0 3px rgba(var(--md-sys-color-primary-rgb), .1);outline:none}.contact-info-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;display:grid}.info-item{text-align:center;background-color:var(--md-sys-color-surface-container-low);padding:24px;transition:transform .2s}.info-item:hover{transform:translateY(-4px)}.info-icon{margin-bottom:16px;font-size:2rem}.info-item h3{color:var(--md-sys-color-on-surface);margin-bottom:8px}.info-item p{color:var(--md-sys-color-on-surface-variant)}@media (width<=600px){.contact-container{padding:20px 16px}.contact-card{padding:20px}}@media (width<=480px){.login-card{border-radius:var(--radius-card);padding:32px 24px}}.login-page{background-color:var(--md-sys-color-background);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.login-card{background-color:var(--md-sys-color-surface);border-radius:var(--radius-container);border:1px solid var(--md-sys-color-surface-container);width:100%;max-width:440px;padding:48px;box-shadow:0 4px 40px #0000000a}@media (width<=480px){.login-card{border-radius:var(--radius-card);padding:32px 24px}}.login-header{text-align:center;margin-bottom:32px}.login-logo{background-color:var(--md-sys-color-primary);width:56px;height:56px;color:var(--md-sys-color-on-primary);border-radius:18px;justify-content:center;align-items:center;margin:0 auto 16px;font-size:1.75rem;font-weight:900;display:flex}.login-header h1{margin-bottom:8px;font-size:1.75rem;font-weight:700}.login-header p{color:var(--md-sys-color-text-variant);font-size:1rem}.login-form{flex-direction:column;gap:20px;display:flex}.auth-error-message{color:#8f1d1d;background-color:#ffe8e8;border:1px solid #f3b9b9;border-radius:14px;margin:0;padding:12px 14px;font-size:.9rem}.input-group{flex-direction:column;gap:8px;display:flex}.label-row{justify-content:space-between;align-items:center;display:flex}.input-group label{color:var(--md-sys-color-text);font-size:.875rem;font-weight:600}.input-group input{background-color:var(--md-sys-color-surface-container);border-radius:var(--radius-pill);border:1px solid #0000;outline:none;height:56px;padding:0 20px;font-size:1rem;transition:all .2s}.input-group input:focus{border-color:var(--md-sys-color-primary);background-color:var(--md-sys-color-surface);box-shadow:0 0 0 4px #6750a41a}.login-submit-button{background-color:var(--md-sys-color-primary);color:#fff;border-radius:var(--radius-pill);height:56px;margin-top:8px;font-size:1rem;font-weight:700;transition:transform .1s,opacity .2s}.login-submit-button:hover{opacity:.9}.login-submit-button:active{transform:scale(.96)}.login-submit-button:disabled,.social-button:disabled{opacity:.65;cursor:not-allowed;transform:none}.login-divider{color:var(--md-sys-color-outline);align-items:center;margin:32px 0;font-size:.875rem;display:flex}.login-divider:before,.login-divider:after{content:"";background-color:var(--md-sys-color-surface-container);flex:1;height:1px}.login-divider span{padding:0 16px}.social-logins{grid-template-columns:1fr 1fr;gap:12px;display:grid}.social-button{background-color:var(--md-sys-color-surface);border:1px solid var(--md-sys-color-outline);border-radius:var(--radius-pill);height:52px;color:var(--md-sys-color-text);justify-content:center;align-items:center;gap:10px;font-size:.95rem;font-weight:600;transition:background-color .2s;display:flex}.social-button:hover{background-color:var(--md-sys-color-surface-container)}.login-footer{text-align:center;color:var(--md-sys-color-text-variant);margin-top:32px;font-size:.95rem}.text-link{color:var(--md-sys-color-primary);font-weight:700;text-decoration:none}.text-link:hover{text-decoration:underline}.signup-page-container{background-color:var(--md-sys-color-background);min-height:100vh;display:flex}.signup-brand-pane{display:none}.signup-form-pane{-webkit-overflow-scrolling:touch;flex:1;justify-content:center;align-items:flex-start;padding:24px;display:flex;overflow-y:auto}.signup-card{width:100%;max-width:480px;box-shadow:none;background-color:#0000;border:none;margin:auto 0;padding:0}@media (width<=1023px){.signup-form-pane{align-items:center;padding:24px}.signup-card{background-color:var(--md-sys-color-surface);border:1px solid var(--md-sys-color-surface-container);border-radius:var(--radius-container);padding:32px 24px;box-shadow:0 4px 40px #0000000a}}@media (width>=1024px){.signup-page-container{height:100vh;overflow:hidden}.signup-brand-pane{background:linear-gradient(135deg, var(--md-sys-color-primary) 0%, #4a3875 100%);max-width:45vw;color:var(--md-sys-color-on-primary);flex-direction:column;flex:1;justify-content:space-between;padding:64px;display:flex;position:relative;overflow:hidden}.signup-form-pane{scrollbar-width:thin;scrollbar-color:var(--md-sys-color-surface-container) transparent;flex:1;padding:64px;overflow-y:auto}.signup-card{margin:auto;padding:48px 0}.signup-form-pane::-webkit-scrollbar{width:6px}.signup-form-pane::-webkit-scrollbar-track{background:0 0}.signup-form-pane::-webkit-scrollbar-thumb{background-color:var(--md-sys-color-surface-container);border-radius:10px}}.brand-logo{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background-color:#fff3;border-radius:20px;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:24px;font-size:2rem;font-weight:900;display:flex}.brand-content h1{letter-spacing:-.02em;margin-bottom:24px;font-size:3.5rem;font-weight:800;line-height:1.1}.brand-content p{opacity:.9;max-width:480px;font-size:1.25rem;line-height:1.6}.brand-testimonial{opacity:.8;max-width:400px;font-size:1.1rem;font-style:italic}.brand-shape{pointer-events:none;background:radial-gradient(circle,#ffffff26 0%,#fff0 70%);border-radius:50%;position:absolute}.shape-1{width:600px;height:600px;top:-200px;right:-200px}.shape-2{width:400px;height:400px;bottom:-100px;left:-100px}.signup-progress-bar{border-radius:32px 32px 0 0;width:100%;height:6px;position:absolute;top:0;left:0;overflow:hidden}.progress-track{background-color:var(--md-sys-color-surface-container);width:100%;height:100%}.progress-fill{background-color:var(--md-sys-color-primary);height:100%;position:absolute;top:0;left:0}.step-badge{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);text-transform:uppercase;letter-spacing:.05em;border-radius:12px;margin-bottom:12px;padding:4px 12px;font-size:.75rem;font-weight:700;display:inline-block}.step-container{margin:12px 0}.step-fields{flex-direction:column;gap:20px;display:flex}.form-actions-row{gap:12px;margin-top:32px;display:flex}.custom-select,.custom-textarea{background-color:var(--md-sys-color-surface-container);width:100%;color:var(--md-sys-color-text);border:1px solid #0000;border-radius:20px;outline:none;padding:16px 20px;font-family:inherit;font-size:1rem;transition:all .2s}.custom-select:focus,.custom-textarea:focus{border-color:var(--md-sys-color-primary);background-color:var(--md-sys-color-surface);box-shadow:0 0 0 4px #6750a41a}.custom-textarea{resize:none;border-radius:24px}.brand-content h1{min-height:2.2em}@media (width<=1023px){.signup-progress-bar{border-radius:var(--radius-container) var(--radius-container) 0 0}}.system-loader-root{justify-content:center;align-items:center;width:100%;display:flex}.system-loader-fullscreen{background:radial-gradient(140% 120% at 100% 0%, #6750a41f 0%, transparent 52%), radial-gradient(120% 120% at 0% 100%, #e8def8a6 0%, transparent 58%), var(--md-sys-color-background);min-height:100vh;padding:24px}.system-loader-shell{background:var(--md-sys-color-surface);text-align:center;border:1px solid #79747e33;border-radius:40px;flex-direction:column;justify-content:center;align-items:center;gap:16px;width:min(100%,460px);padding:28px 30px;display:flex;box-shadow:0 22px 40px #1c1b1f1f}.system-loader-orbit{border-radius:50%;width:108px;height:108px;animation:4.5s ease-in-out infinite systemLoaderFloat;position:relative}.system-loader-ring{border:2px solid #0000;border-radius:50%;position:absolute;inset:0}.system-loader-ring-a{border-top-color:#6750a4eb;border-right-color:#6750a459;animation:1.3s linear infinite systemLoaderSpin}.system-loader-ring-b{border-bottom-color:#6750a4bf;border-left-color:#e8def8f2;animation:1.8s linear infinite systemLoaderSpinReverse;inset:14px}.system-loader-core{background:var(--md-sys-color-primary);border-radius:50%;width:18px;height:18px;animation:1.8s ease-out infinite systemLoaderPulse;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 #6750a473,0 6px 16px #6750a466}.system-loader-copy{gap:6px;display:grid}.system-loader-title{color:var(--md-sys-color-text);letter-spacing:-.01em;margin:0;font-size:1.08rem;font-weight:700}.system-loader-detail{color:var(--md-sys-color-text-variant);margin:0;font-size:.92rem;line-height:1.45}.system-loader-compact .system-loader-shell{text-align:left;border-radius:26px;flex-direction:row;justify-content:flex-start;width:100%;max-width:none;min-height:80px;padding:14px 18px}.system-loader-compact .system-loader-orbit{flex:none;width:56px;height:56px}.system-loader-compact .system-loader-ring-b{inset:8px}.system-loader-compact .system-loader-title{font-size:.95rem}.system-loader-compact .system-loader-detail{font-size:.82rem}@keyframes systemLoaderSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes systemLoaderSpinReverse{0%{transform:rotate(360deg)}to{transform:rotate(0)}}@keyframes systemLoaderFloat{0%{transform:translateY(0)}50%{transform:translateY(-6px)}to{transform:translateY(0)}}@keyframes systemLoaderPulse{0%{box-shadow:0 0 #6750a466,0 6px 16px #6750a459}70%{box-shadow:0 0 0 14px #6750a400,0 6px 16px #6750a440}to{box-shadow:0 0 #6750a400,0 6px 16px #6750a459}}@media (width<=767px){.system-loader-shell{border-radius:30px;padding:20px}.system-loader-orbit{width:92px;height:92px}.system-loader-title{font-size:1rem}}.app-container{width:100%;min-height:100vh}.session-fadeout-shell{background:color-mix(in srgb, var(--md-sys-color-surface) 80%, #000 20%);place-items:center;width:100%;min-height:100vh;padding:24px;animation:.32s forwards sessionFadeOutBackdrop;display:grid}.session-fadeout-card{border:1px solid color-mix(in srgb, var(--md-sys-color-error) 40%, transparent);background:color-mix(in srgb, var(--md-sys-color-error) 12%, #fff 88%);width:min(520px,100%);color:var(--md-sys-color-text);border-radius:20px;padding:20px 22px;animation:.32s forwards sessionFadeOutCard;box-shadow:0 20px 44px #00000026}.session-fadeout-title{margin:0 0 6px;font-size:1.05rem;font-weight:700}.session-fadeout-copy{opacity:.92;margin:0;font-size:.92rem;line-height:1.5}@keyframes sessionFadeOutBackdrop{0%{opacity:1}to{opacity:0}}@keyframes sessionFadeOutCard{0%{opacity:1;transform:translateY(0)scale(1)}to{opacity:0;transform:translateY(8px)scale(.985)}}