@import "https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600;700&family=Newsreader:opsz,wght@6..72,500;6..72,600;6..72,700&display=swap";:root{--font-serif:"Newsreader", Georgia, "Times New Roman", serif;--font-sans:"Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--brand-navy:#0f2743;--brand-navy-700:#1a3656;--brand-blue:#00b5ea;--brand-blue-600:#0389c3;--brand-sky:#8be4fd;--brand-bone:#e4f0f2;--bg-app:#e9f1f3;--bg-panel:#f2f7f8;--bg-card:#fff;--ink:#1c2a3a;--ink-strong:#0f2743;--ink-muted:#5a6b7b;--ink-faint:#9aaab6;--border:#dbe7eb;--border-strong:#c4d6dc;--accent:#0f2743;--accent-hover:#1a3656;--active-bg:#dceaee;--hover-bg:#e4eef1;--ring:#00b5ea47;--success:#4f9a3a;--danger:#b23a3a;--danger-bg:#fbecec;--danger-border:#efc9c9}*{box-sizing:border-box}html,body,#root{height:100%}body{font-family:var(--font-sans);color:var(--ink);background:var(--bg-app);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}.login-screen{background:var(--bg-app);justify-content:center;align-items:center;min-height:100%;padding:40px 20px;display:flex}.login-wrap{width:100%;max-width:620px}.login-brand{justify-content:center;margin-bottom:34px;display:flex}.login-brand h1{font-family:var(--font-serif);letter-spacing:-.5px;color:var(--ink-strong);margin:0;font-size:46px;font-weight:700}.login-brand p{color:var(--ink-muted);margin:10px 0 0;font-size:18px}.login-card{background:var(--bg-card);border-radius:18px;max-width:560px;margin:0 auto;padding:40px 44px 46px;box-shadow:0 18px 50px #141d2714,0 2px 6px #141d270a}.login-card-head{text-align:center;margin-bottom:30px}.login-card-head h2{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--ink-strong);margin:0;font-size:30px;font-weight:600}.login-card-head p{color:var(--ink-muted);margin:9px 0 0;font-size:16px}.field-label{color:var(--ink-strong);margin:18px 0 9px;font-size:15px;font-weight:600;display:block}.field{align-items:center;display:flex;position:relative}.field-icon{color:var(--ink-faint);pointer-events:none;display:flex;position:absolute;left:16px}.field input{border:1px solid var(--border-strong);width:100%;height:52px;color:var(--ink);background:#fff;border-radius:11px;outline:none;padding:0 56px 0 46px;font-size:16px;transition:border-color .15s,box-shadow .15s}.field input::placeholder{color:var(--ink-faint)}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}.field-trailing{color:var(--ink-faint);background:0 0;border:none;padding:4px;display:flex;position:absolute;right:14px}.field-trailing:hover{color:var(--ink-muted)}.login-options{justify-content:space-between;align-items:center;margin:22px 0 26px;display:flex}.remember{color:var(--ink-muted);cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:10px;font-size:15px;display:flex}.remember input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.forgot{color:var(--brand-blue-600);font-size:15px;font-weight:600;text-decoration:none}.forgot:hover{text-decoration:underline}.signin-btn{background:var(--accent);color:#fff;border:none;border-radius:11px;width:100%;height:54px;margin-top:28px;font-size:17px;font-weight:600;transition:background .15s,opacity .15s}.signin-btn:hover{background:var(--accent-hover)}.signin-btn:disabled{opacity:.7;cursor:default}.login-error{background:var(--danger-bg);border:1px solid var(--danger-border);color:var(--danger);border-radius:10px;margin-top:16px;padding:11px 14px;font-size:14px}.fp-sent{flex-direction:column;gap:14px;display:flex}.fp-sent p{color:var(--ink-muted,#64748b);margin:0;font-size:14px;line-height:1.55}.back-link{width:100%;color:var(--ink-muted,#64748b);text-align:center;cursor:pointer;background:0 0;border:none;margin-top:4px;padding:0;font-size:14px;text-decoration:underline;display:block}.back-link:hover{color:var(--ink-strong,#1e293b)}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/chat/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/chat/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/chat/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/chat/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/chat/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/chat/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/chat/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/chat/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/chat/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/chat/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/chat/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/chat/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/chat/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/chat/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/chat/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/chat/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/chat/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/chat/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/chat/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/chat/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(/chat/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/chat/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/chat/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:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);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}.blocked-banner{z-index:9999;background:var(--danger);color:#fff;text-align:center;letter-spacing:.01em;padding:14px 24px;font-size:14px;font-weight:500;position:fixed;top:0;left:0;right:0}.chat-layout{background:var(--bg-app);height:100%;display:flex}.sidebar{background:var(--bg-panel);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:310px;padding:26px 20px 20px;display:flex}.sidebar-head{justify-content:space-between;align-items:flex-start;gap:8px;display:flex}.sidebar-toggle{width:34px;height:34px;color:var(--ink-muted);background:0 0;border:none;border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;transition:background .12s,color .12s;display:flex}.sidebar-toggle:hover{background:var(--hover-bg);color:var(--ink-strong)}.sidebar-brand h1{font-family:var(--font-serif);letter-spacing:-.3px;color:var(--ink-strong);margin:0;font-size:27px;font-weight:700}.sidebar-brand p{color:var(--ink-muted);margin:5px 0 0;font-size:14px}.new-chat{color:var(--ink-strong);background:0 0;border:none;align-items:center;gap:13px;margin:26px 0 28px;padding:0;font-size:16px;font-weight:600;display:flex}.new-chat-icon{background:var(--accent);color:#fff;border-radius:11px;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.recent{flex:1;overflow-y:auto}.recent-label{letter-spacing:.7px;color:var(--ink-faint);margin-bottom:12px;padding:0 12px;font-size:12px;font-weight:600}.recent ul{flex-direction:column;gap:3px;margin:0;padding:0;list-style:none;display:flex}.recent-item{text-align:left;width:100%;color:var(--ink-muted);background:0 0;border:none;border-radius:9px;align-items:center;gap:12px;padding:11px 12px;font-size:15px;transition:background .12s,color .12s;display:flex}.recent-item svg{color:var(--ink-faint);flex-shrink:0}.recent-item span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.recent-item:hover{background:var(--hover-bg)}.recent-item.active{background:var(--active-bg);color:var(--ink-strong);font-weight:500}.recent-item.active svg{color:var(--ink-muted)}.sidebar-footer{border-top:1px solid var(--border);margin-top:12px;padding-top:16px}.profile{text-align:left;background:0 0;border:none;border-radius:10px;align-items:center;gap:12px;width:100%;padding:6px;display:flex}.profile:hover{background:var(--hover-bg)}.profile-avatar{color:var(--ink-muted);justify-content:center;align-items:center;display:flex}.profile-meta{flex-direction:column;line-height:1.3;display:flex}.profile-name{color:var(--ink-strong);font-size:15px;font-weight:600}.profile-role{color:var(--ink-muted);font-size:13px}.main{flex-direction:column;flex:1;min-width:0;display:flex}.main-topbar{z-index:20;justify-content:space-between;align-items:center;gap:8px;padding:20px 28px 0;display:flex;position:relative}.topbar-left{align-items:center;display:flex}.topbar-right{align-items:center;gap:8px;display:flex}.top-action{position:relative}.top-icon{width:40px;height:40px;color:var(--ink-muted);background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;display:flex}.top-icon:hover,.top-icon.active{background:var(--active-bg);color:var(--ink-strong)}.popover{border:1px solid var(--border);background:#fff;border-radius:14px;width:280px;padding:18px;animation:.12s ease-out pop-in;position:absolute;top:50px;right:0;box-shadow:0 16px 40px #141d2724}@keyframes pop-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.help-popover h4{color:var(--ink-strong);margin:0 0 8px;font-size:15px}.help-popover p{color:var(--ink-muted);margin:0 0 10px;font-size:13.5px;line-height:1.5}.help-popover a{color:var(--ink-strong);font-size:13.5px;font-weight:600;text-decoration:none}.help-popover a:hover{text-decoration:underline}.contact-support-btn{background:var(--accent);color:#fff;border:none;border-radius:10px;width:100%;height:38px;margin-top:6px;font-size:14px;font-weight:600;transition:background .15s}.contact-support-btn:hover{background:var(--accent-hover)}.modal-textarea{border:1px solid var(--border-strong);color:var(--ink);resize:vertical;border-radius:9px;outline:none;min-height:96px;padding:10px 12px;font-family:inherit;font-size:14px;line-height:1.5;transition:border-color .15s}.modal-textarea:focus{border-color:var(--accent)}.account-head{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding-bottom:14px;display:flex}.account-avatar{background:var(--bg-panel);width:44px;height:44px;color:var(--ink-muted);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.account-name{color:var(--ink-strong);font-size:15px;font-weight:600}.account-email{color:var(--ink-muted);word-break:break-all;font-size:13px}.account-row{color:var(--ink-muted);justify-content:space-between;align-items:center;padding:14px 2px;font-size:14px;display:flex}.account-row strong{color:var(--ink-strong);font-weight:600}.change-pw-btn{border:1px solid var(--border);width:100%;height:38px;color:var(--ink);background:#fff;border-radius:10px;margin-bottom:8px;font-size:14px;font-weight:500;transition:background .15s}.change-pw-btn:hover{background:var(--hover-bg)}.logout-btn{border:1px solid var(--border-strong);width:100%;height:42px;color:var(--danger);background:#fff;border-radius:10px;font-size:14px;font-weight:600;transition:background .15s,border-color .15s}.logout-btn:hover{background:var(--danger-bg);border-color:var(--danger-border)}.modal-overlay{z-index:1000;background:#0f172a73;justify-content:center;align-items:center;animation:.15s fade-in;display:flex;position:fixed;inset:0}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.modal{background:#fff;border-radius:16px;width:400px;animation:.15s pop-in;box-shadow:0 24px 60px #0f172a33}.modal-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:22px 24px 18px;display:flex}.modal-head h3{color:var(--ink-strong);margin:0;font-size:16px;font-weight:700}.modal-close{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:22px;line-height:1}.modal-close:hover{color:var(--ink)}.modal-form{flex-direction:column;gap:14px;padding:22px 24px 24px;display:flex}.modal-form label{color:var(--ink-muted);flex-direction:column;gap:6px;font-size:13px;font-weight:600;display:flex}.modal-form input{border:1px solid var(--border-strong);height:40px;color:var(--ink);border-radius:9px;outline:none;padding:0 12px;font-size:14px;transition:border-color .15s}.modal-form input:focus{border-color:var(--accent)}.modal-error{color:var(--danger);margin:0;font-size:13px}.modal-actions{justify-content:flex-end;gap:10px;margin-top:4px;display:flex}.modal-cancel{border:1px solid var(--border);height:38px;color:var(--ink-muted);background:#fff;border-radius:9px;padding:0 18px;font-size:14px}.modal-cancel:hover{background:var(--hover-bg)}.modal-submit{background:var(--accent);color:#fff;border:none;border-radius:9px;height:38px;padding:0 18px;font-size:14px;font-weight:600}.modal-submit:hover{background:var(--accent-hover)}.modal-submit:disabled{opacity:.6;cursor:default}.modal-success{text-align:center;padding:28px 24px 24px}.modal-success p{color:var(--ink);margin:0 0 20px;font-size:14px}.modal-done-btn{background:var(--accent);color:#fff;border:none;border-radius:9px;height:40px;padding:0 24px;font-size:14px;font-weight:600}.main-center{flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;max-width:820px;margin:-40px auto 0;padding:0 24px;display:flex}.thread-view{flex-direction:column;flex:1;width:100%;min-height:0;display:flex}.thread{flex-direction:column;flex:1;gap:18px;padding:20px 120px 12px;display:flex;overflow-y:auto}.msg{display:flex}.msg.user{justify-content:flex-end}.msg.assistant{justify-content:flex-start}.msg-body{flex-direction:column;max-width:80%;display:flex}.msg.user .msg-body{align-items:flex-end}.msg.assistant .msg-body{align-items:flex-start}.msg-files{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.msg-file-badge{color:#000000bf;background:#ffffff2e;border:1px solid #00000059;border-radius:6px;align-items:center;gap:5px;padding:3px 8px;font-size:12px;display:inline-flex}.msg-file-badge svg{color:#0009;flex-shrink:0}.bubble{border-radius:16px;padding:13px 17px;font-size:15.5px;line-height:1.5}.bubble>:first-child{margin-top:0}.bubble>:last-child{margin-bottom:0}.bubble p{margin:0 0 6px}.bubble strong{font-weight:700}.bubble em{font-style:italic}.bubble h1,.bubble h2,.bubble h3,.bubble h4{margin:10px 0 5px;font-weight:700;line-height:1.3}.bubble h1{font-size:19px}.bubble h2{font-size:17px}.bubble h3,.bubble h4{font-size:15.5px}.bubble ul,.bubble ol{margin:4px 0 6px 18px;padding:0}.bubble li{margin-bottom:1px}.bubble li>p{margin:0}.bubble li>ul,.bubble li>ol{margin:1px 0 1px 16px}.bubble code{background:#00000012;border-radius:4px;padding:1px 5px;font-family:monospace;font-size:14px}.bubble pre{background:#0000000f;border-radius:8px;margin:8px 0;padding:10px 14px;overflow-x:auto}.bubble pre code{background:0 0;padding:0}.bubble table{border-collapse:collapse;width:100%;margin:8px 0;font-size:14px}.bubble th,.bubble td{text-align:left;border:1px solid #00000026;padding:7px 12px}.bubble th{background:#0000000d;font-weight:600}.bubble tr:nth-child(2n) td{background:#00000005}.bubble a.md-link{color:var(--brand-blue-600);border-bottom:1px solid #0389c359;font-weight:500;text-decoration:none;transition:border-color .15s,color .15s}.bubble a.md-link:hover{color:var(--brand-navy);border-bottom-color:var(--brand-blue-600)}.bubble .md-link-ext{vertical-align:1px;opacity:.65;margin-left:3px;display:inline-block}.bubble a.citation-chip{background:var(--hover-bg);border:1px solid var(--border);max-width:220px;color:var(--ink-muted);vertical-align:text-bottom;border-radius:999px;align-items:center;gap:5px;margin:0 2px;padding:1px 9px;font-size:12.5px;font-weight:500;line-height:1.6;text-decoration:none;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.bubble a.citation-chip:hover{background:var(--active-bg);border-color:var(--border-strong);color:var(--ink-strong)}.bubble .citation-chip svg{opacity:.7;flex-shrink:0}.bubble .citation-chip-num{color:var(--brand-blue-600);flex-shrink:0;font-size:11px;font-weight:700}.bubble .citation-chip-host{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.msg.user .bubble{background:var(--accent);color:#fff;white-space:pre-wrap;border-bottom-right-radius:5px}.msg.assistant .bubble{border:1px solid var(--border);color:var(--ink);background:#fff;border-bottom-left-radius:5px}.bubble.typing{align-items:center;gap:8px;padding:14px 18px;display:inline-flex}.bubble.typing .typing-status{color:var(--ink-muted);font-size:14px;font-weight:500;animation:1.6s ease-in-out infinite status-shimmer}.bubble.typing .typing-dots{gap:5px;display:inline-flex}.bubble.typing .typing-dots span{background:var(--ink-faint);border-radius:50%;width:7px;height:7px;animation:1s ease-in-out infinite typing}.bubble.typing .typing-dots span:nth-child(2){animation-delay:.15s}.bubble.typing .typing-dots span:nth-child(3){animation-delay:.3s}@keyframes typing{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}@keyframes status-shimmer{0%,to{opacity:.55}50%{opacity:1}}.thread-composer{padding:12px 120px 22px}.greeting-block{text-align:center;margin-bottom:34px}.greeting{font-family:var(--font-serif);letter-spacing:-.5px;color:var(--ink-strong);margin:0;font-size:52px;font-weight:700}.greeting-sub{color:var(--ink-muted);margin:18px 0 0;font-size:19px}.composer{border:1px solid var(--border-strong);background:#fff;border-radius:18px;width:100%;padding:20px 20px 14px;box-shadow:0 10px 34px #141d270f}.composer textarea{resize:none;width:100%;color:var(--ink);background:0 0;border:none;outline:none;max-height:200px;font-size:17px;line-height:1.5}.composer textarea::placeholder{color:var(--ink-faint)}.composer-actions{justify-content:space-between;align-items:center;margin-top:12px;display:flex}.composer-right{align-items:center;gap:8px;display:flex}.composer-icon{width:38px;height:38px;color:var(--ink-muted);background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;display:flex}.composer-icon:hover{background:var(--hover-bg);color:var(--ink-strong)}.composer-icon.web-search-toggle{transition:background .15s,color .15s}.composer-icon.web-search-toggle.active{background:var(--accent);color:#fff}.send-btn{background:var(--accent);color:#fff;border:none;border-radius:11px;justify-content:center;align-items:center;width:40px;height:40px;transition:background .15s,opacity .15s;display:flex}.send-btn:hover{background:var(--accent-hover)}.send-btn:disabled{opacity:.5;cursor:default}.suggestions{grid-template-columns:1fr 1fr;gap:20px;width:100%;margin-top:28px;display:grid}.suggestion-card{text-align:left;border:1px solid var(--border);background:#fff;border-radius:13px;padding:20px 22px;transition:border-color .15s,box-shadow .15s,transform 50ms}.suggestion-card:hover{border-color:var(--border-strong);box-shadow:0 6px 20px #141d270f}.suggestion-card:active{transform:translateY(1px)}.suggestion-head{color:var(--ink-muted);align-items:center;gap:10px;margin-bottom:12px;display:flex}.suggestion-head svg{color:var(--brand-blue)}.suggestion-head span{letter-spacing:.8px;font-size:12px;font-weight:700}.suggestion-card p{color:var(--ink);margin:0;font-size:16px;line-height:1.5}.composer-left{align-items:center;gap:6px;display:flex}.file-limit-note{color:var(--ink-faint);letter-spacing:.01em;-webkit-user-select:none;user-select:none;font-size:12px}.file-chips-container{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.file-chip{background:var(--hover-bg);border:1px solid var(--border);color:var(--ink);border-radius:8px;align-items:center;gap:6px;max-width:100%;padding:5px 8px 5px 10px;font-size:13px;display:inline-flex}.file-chip svg{color:var(--ink-muted);flex-shrink:0}.file-chip-name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.file-chip-remove{width:18px;height:18px;color:var(--ink-muted);background:0 0;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;font-size:16px;line-height:1;display:flex}.file-chip-remove:hover{background:var(--border-strong);color:var(--ink-strong)}.file-error{color:var(--danger);margin-bottom:8px;font-size:13px}.composer-icon.uploading{opacity:.5;cursor:default;animation:1s infinite pulse}@keyframes pulse{0%,to{opacity:.5}50%{opacity:.8}}.model-picker{position:relative}.model-picker-trigger{align-items:center;gap:6px;width:auto;padding:0 10px;display:flex}.model-picker-label{white-space:nowrap;font-size:13px;font-weight:600}.model-popover{width:260px;padding:8px;position:absolute;inset:auto auto 46px 0}.model-row{text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;flex-direction:column;align-items:flex-start;width:100%;padding:10px 12px;display:flex}.model-row:hover{background:var(--hover-bg)}.model-row.selected{background:var(--active-bg)}.model-row-name{color:var(--ink-strong);font-size:14px;font-weight:600}.model-row-desc{color:var(--ink-muted);margin-top:2px;font-size:12.5px}.bubble .katex-display{margin:.5em 0;overflow:auto hidden}.bubble .katex{font-size:1em}.bubble .katex-mathml{display:none}.bubble .katex-html{display:inline}.msg-generated-files{border-top:1px solid #0000001a;margin-top:12px;padding-top:12px}.msg-generated-files-label{color:#666;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:12px;font-weight:600}.msg-generated-file{background:#3b82f614;border:1px solid #3b82f64d;border-radius:8px;justify-content:space-between;align-items:center;margin-bottom:6px;padding:8px 12px;font-size:13px;display:flex}.msg-generated-file:last-child{margin-bottom:0}.file-info{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.file-name{color:#1f2937;text-overflow:ellipsis;white-space:nowrap;font-weight:500;overflow:hidden}.file-size{color:#888;flex-shrink:0;font-size:12px}.file-actions{flex-shrink:0;gap:6px;margin-left:8px;display:flex}.file-action-btn{cursor:pointer;color:#333;background:#fff;border:1px solid #00000026;border-radius:5px;justify-content:center;align-items:center;width:28px;min-width:28px;height:28px;font-size:14px;transition:all .2s;display:flex}.file-action-btn:hover{background:#f3f4f6;border-color:#00000040}.file-action-btn.download:active{background:#e5e7eb}.file-action-btn.delete:hover{color:#dc2626;background:#fee2e2;border-color:#fca5a5}.file-action-btn.delete:active{background:#fecaca}.background-streaming-banner{color:#3d4b62;background:linear-gradient(135deg,#f0f4f8 0%,#e8eef7 100%);border-bottom:1px solid #d0dce8;align-items:center;gap:10px;padding:12px 20px;font-size:14px;font-weight:500;display:flex}.pulse-dot{background:#3b82f6;border-radius:50%;flex-shrink:0;width:8px;height:8px;animation:1.5s ease-in-out infinite pulse-animation}@keyframes pulse-animation{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}@media (width<=720px){.sidebar{display:none}.greeting{font-size:38px}.suggestions{grid-template-columns:1fr}}.filegen-progress{border:1px solid var(--border,#dbe7eb);background:var(--bg-panel,#f2f7f8);border-radius:12px;max-width:460px;margin-top:10px;padding:12px 14px}.filegen-file+.filegen-file{border-top:1px solid var(--border,#dbe7eb);margin-top:12px;padding-top:12px}.filegen-file-head{align-items:center;gap:8px;margin-bottom:8px;display:flex}.filegen-fmt{letter-spacing:.04em;color:#fff;background:var(--brand-navy,#0f2743);border-radius:4px;padding:2px 6px;font-size:10px;font-weight:700}.filegen-name{color:var(--ink-strong,#0f2743);text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:600;overflow:hidden}.filegen-count{color:var(--ink-muted,#5a6b7b);margin-left:auto;font-size:11px}.filegen-steps{margin:0;padding:0;list-style:none}.filegen-step{align-items:center;gap:10px;min-height:24px;padding:5px 0 5px 2px;display:flex;position:relative}.filegen-step:not(:last-child):before{content:"";background:var(--border-strong,#c4d6dc);width:2px;position:absolute;top:21px;bottom:-3px;left:6px}.filegen-step.done:not(:last-child):before{background:var(--brand-navy,#0f2743)}.filegen-dot{border:2px solid var(--border-strong,#c4d6dc);box-sizing:border-box;z-index:1;background:#fff;border-radius:50%;flex:0 0 14px;justify-content:center;align-items:center;width:14px;height:14px;display:flex}.filegen-step.done .filegen-dot{background:var(--brand-navy,#0f2743);border-color:var(--brand-navy,#0f2743)}.filegen-step.done .filegen-dot:after{content:"✓";color:#fff;font-size:9px;line-height:1}.filegen-step.active .filegen-dot{border-color:var(--brand-blue,#00b5ea);animation:1.2s ease-in-out infinite filegen-pulse}.filegen-label{color:var(--ink-muted,#5a6b7b);font-size:13px}.filegen-step.active .filegen-label{color:var(--ink-strong,#0f2743);font-weight:600}.filegen-step.done .filegen-label{color:var(--ink,#1c2a3a)}.filegen-failed{color:var(--danger,#b23a3a);font-size:13px}@keyframes filegen-pulse{0%,to{box-shadow:0 0 0 3px #00b5ea1a}50%{box-shadow:0 0 0 5px #00b5ea47}}
