@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.38"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.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;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .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{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.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;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.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:.8333333333em}.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:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.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:1.6666666667em}.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:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.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:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.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:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.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:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.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:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.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:.4166666667em}.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:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.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:.8333333333em}.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:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.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:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.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:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.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:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.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:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.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{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .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{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.auth-page,.onboarding-page{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:24px;min-height:100dvh;background-color:#eef2f8;position:relative;overflow:hidden}.auth-bg-ambient{position:absolute;inset:0;overflow:hidden;z-index:0;pointer-events:none}.auth-blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.6;animation:float-blob 20s infinite alternate ease-in-out}.blob-1{width:400px;height:400px;background:radial-gradient(circle,#6b8cff,#a9c2ff);top:-100px;left:-150px;animation-delay:0s}.blob-2{width:500px;height:500px;background:radial-gradient(circle,#ff9cf1,#ffc9f7);bottom:-150px;right:-200px;animation-delay:-5s}@keyframes float-blob{0%{transform:translate(0) scale(1)}33%{transform:translate(40px,-60px) scale(1.1)}66%{transform:translate(-30px,40px) scale(.9)}to{transform:translate(0) scale(1)}}.auth-content-wrap{position:relative;z-index:10;width:100%;max-width:380px;display:flex;flex-direction:column;align-items:center}.auth-header{text-align:center;margin-bottom:32px;animation:fade-up .6s cubic-bezier(.16,1,.3,1) both;display:flex;flex-direction:column;align-items:center;width:100%}.mascot-avatar-container{position:relative;margin-bottom:24px;display:inline-flex;justify-content:center;align-items:center}.mascot-avatar{position:relative;z-index:2;box-shadow:0 8px 32px #0000001a;border:4px solid #fff}.avatar-glow{position:absolute;inset:-10px;background:conic-gradient(from 0deg,#ff9cf1,#6b8cff,#42dfff,#ff9cf1);border-radius:50%;filter:blur(20px);z-index:1;opacity:.7;animation:spin-glow 6s linear infinite}@keyframes spin-glow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.auth-header h1{font-size:42px;font-weight:800;letter-spacing:-1px;margin:0 0 4px;background:linear-gradient(135deg,#101828,#344054);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.auth-header p{color:#475467;font-size:16px;font-weight:500;margin:0}.auth-form{width:100%;padding:32px 28px;background:#ffffffb3;backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border-radius:28px;border:1px solid rgba(255,255,255,.9);box-shadow:0 24px 60px #10182814,inset 0 0 0 1px #fff6;animation:slide-up .6s cubic-bezier(.16,1,.3,1) .15s both}.auth-form h2{margin:0 0 24px;font-size:22px;font-weight:700;color:#101828;text-align:center}.form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.form-group label{font-size:14px;font-weight:600;color:#344054}.form-group input{width:100%;min-height:52px;padding:0 16px;border-radius:16px;border:1px solid rgba(208,213,221,.6);background:#fffc;font-size:15px;font-weight:500;color:#101828;transition:all .25s cubic-bezier(.16,1,.3,1);outline:none}.form-group input::placeholder{color:#98a2b3;font-weight:400}.form-group input:hover{background:#fff;border-color:#b9c0cb}.form-group input:focus{background:#fff;border-color:#4b86ff;box-shadow:0 0 0 4px #4b86ff26;transform:translateY(-1px)}.auth-submit{width:100%;min-height:54px;margin-top:16px;font-size:16px;font-weight:700;border-radius:16px;box-shadow:0 8px 20px #4b86ff4d;transition:all .25s cubic-bezier(.16,1,.3,1)}.auth-submit:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 12px 24px #4b86ff66}.auth-submit:active:not(:disabled){transform:translateY(1px);box-shadow:0 4px 12px #4b86ff4d}.auth-switch-btn{margin-top:28px;background:transparent;border:none;color:#475467;font-size:14px;font-weight:600;cursor:pointer;animation:fade-up .6s cubic-bezier(.16,1,.3,1) .3s both;padding:8px 16px;border-radius:12px;transition:all .2s ease}.auth-switch-btn:hover{background:#0000000a;color:#101828}.auth-switch-btn:active{background:#00000014}.auth-error{text-align:center;margin-top:-8px;margin-bottom:20px;animation:slide-up .3s cubic-bezier(.16,1,.3,1);padding:12px;background:#fff0f0;color:#d92d20;border-radius:12px;font-size:14px;font-weight:500}.level-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.level-choice{min-height:52px;border:1px solid rgba(208,213,221,.8);background:#ffffffe6;border-radius:16px;font-size:15px;font-weight:600;color:#344054;cursor:pointer;transition:all .2s cubic-bezier(.16,1,.3,1)}.level-choice:hover{background:#fff;border-color:#98a2b3;transform:translateY(-1px)}.level-choice.selected{background:#eaf1ff;border-color:#4b86ff;color:#1d4fa3;box-shadow:0 4px 12px #4b86ff26,inset 0 0 0 1px #4b86ff}.field-hint{font-size:13px;color:#667085;margin:6px 0 0;font-weight:400}.form-row-2col{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-row-2col .form-group{margin-bottom:16px}:root{--bg: #ffffff;--surface: #f7f8fa;--surface-2: #ffffff;--line: #e7e9ee;--text: #101828;--muted: #667085;--primary: #1877f2;--shadow: 0 12px 30px rgba(16, 24, 40, .08);--radius-xl: 26px;--radius-pill: 999px;--tabbar-height: 66px;--tabbar-side-gap: 18px;--tabbar-bottom-gap: 12px;--tabbar-safe-offset: calc(var(--tabbar-height) + var(--tabbar-bottom-gap) + 28px);font-family:SF Pro Text,Avenir Next,Helvetica Neue,sans-serif;color:var(--text)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{margin:0;min-height:100%;height:100%}body{background:linear-gradient(170deg,#fafbfd,#f4f7fb 60%,#eef4fb);overscroll-behavior-y:none}body.app-fixed{overflow:hidden}body.app-fixed .app-bg{height:100dvh}body.app-fixed .phone-shell{height:calc(100dvh - 32px);max-height:calc(100dvh - 32px)}.app-bg{min-height:100svh;min-height:100dvh;display:grid;place-items:center;padding:16px;background:radial-gradient(circle at 0% 0%,rgba(43,89,255,.05) 0%,transparent 50%),radial-gradient(circle at 100% 100%,rgba(43,89,255,.03) 0%,transparent 50%),#fff;position:relative;overflow:hidden}.phone-shell{width:100%;max-width:430px;height:100svh;height:100dvh;background:var(--bg);border:1px solid #edf0f5;box-shadow:var(--shadow);border-radius:34px;overflow:hidden;position:relative;isolation:isolate;user-select:none;-webkit-user-select:none;display:flex;flex-direction:column}input,textarea,[contenteditable]{user-select:auto;-webkit-user-select:auto}.page{flex:1;min-height:0;height:100%;overflow-y:auto;padding:calc(12px + env(safe-area-inset-top)) 18px calc(var(--tabbar-safe-offset) + env(safe-area-inset-bottom));position:relative}.chat-home{height:100%;min-height:0;display:flex;flex-direction:column;overflow:hidden}.top-row{display:flex;justify-content:space-between;align-items:center}.chat-header{display:grid;grid-template-columns:48px 1fr 48px;align-items:center;margin-bottom:10px}.chat-header h1{margin:0;text-align:center;font-size:40px;letter-spacing:.3px}.header-spacer{width:48px}.history-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--surface-2);display:grid;place-items:center;color:#0f172a;transition:transform .18s ease,box-shadow .18s ease}.history-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.history-btn:active{transform:scale(.96)}.stop-btn{color:#c62828;border-color:#f0c7c7;background:#fff7f7}.mascot-avatar{animation:fade-up .36s ease both}.avatar{border-radius:50%;background-image:url(/iris.png);background-size:cover;background-position:center;background-color:#fff;border:1px solid #d4def3;position:relative}.chat-mascot-wrap{display:grid;place-items:center;margin-top:68px;gap:10px;text-align:center}.empty-chat-text{margin:0;color:var(--muted)}.chat-composer-wrap{position:absolute;left:18px;right:18px;bottom:calc(var(--tabbar-height) + var(--tabbar-bottom-gap) + 12px + env(safe-area-inset-bottom));display:grid;gap:8px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:8px;box-shadow:0 8px 20px #0f172a14}.composer-row{display:flex;gap:10px;align-items:center}.composer-attachments{display:flex;gap:6px;flex-wrap:wrap;padding:2px 4px 0}.composer-error{margin:0;padding:0 4px;font-size:12px}.attach-btn{width:38px;height:38px;border-radius:12px;border:1px solid #d2ddf4;background:#f5f8ff;color:#355392;display:grid;place-items:center;padding:0;flex-shrink:0;transition:transform .16s ease,box-shadow .16s ease}.attach-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.attach-btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px #2a549c2e}.file-input-hidden{display:none}.chat-input{flex:1;border:none;outline:none;font-size:16px;padding:10px 12px;background:transparent;color:var(--text)}.chat-input::placeholder{color:#9aa4b2}.send-btn{width:42px;height:42px;border:none;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;transition:transform .18s ease,filter .18s ease}.send-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}.send-btn:hover{filter:brightness(1.05)}.send-btn:active{transform:scale(.95)}.send-btn:disabled{opacity:.65;cursor:not-allowed}.chat-messages{display:grid;align-content:start;gap:10px;margin-top:16px;margin-bottom:0;flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding-right:2px;padding-bottom:calc(var(--tabbar-safe-offset) + 90px);overscroll-behavior:contain}.section-title{margin:10px 0 18px;font-size:22px}.add-folder-btn{border:1px solid var(--line);border-radius:var(--radius-pill);background:var(--surface-2);min-height:44px;padding:0 16px;font-size:15px;font-weight:600;color:var(--text);transition:background .18s ease,transform .18s ease}.add-folder-btn:active{transform:scale(.98)}.folder-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.folder-widget{position:relative;background:#ffffffb3;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.8);border-radius:22px;min-height:120px;padding:16px;display:grid;align-content:space-between;box-shadow:0 4px 24px #2b59ff14,inset 0 1px #fff;animation:fade-up .42s cubic-bezier(.16,1,.3,1) both;transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s ease}.folder-widget:active{transform:scale(.96);box-shadow:0 2px 10px #2b59ff0d}.folder-open-btn{border:none;background:transparent;width:100%;text-align:left;display:grid;gap:12px;align-content:space-between;min-height:78px;cursor:pointer}.folder-widget-icon{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,#e0ebff,#c4daff);display:grid;place-items:center;font-size:24px;box-shadow:0 4px 12px #6294ff33,inset 0 2px #fff9;border:1px solid rgba(255,255,255,.5)}.folder-widget b{font-size:16px;font-weight:700;color:#1a2744;line-height:1.35;letter-spacing:-.01em}.folder-delete-btn{position:absolute;top:10px;right:10px;border:none;background:#0000000a;border-radius:10px;min-width:30px;min-height:30px;font-size:14px;line-height:1;cursor:pointer;transition:background .15s;opacity:.5}.folder-delete-btn:active{background:#ef44441a;opacity:1}.modal-overlay{position:absolute;inset:0;z-index:120;background:#0f172a66;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px;animation:fade-in .22s ease}.folder-modal{width:100%;max-width:340px;background:#fffffff2;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:24px;border:1px solid rgba(255,255,255,.8);box-shadow:0 24px 60px #1018282e;padding:24px;animation:slide-up-anim .3s cubic-bezier(.16,1,.3,1)}.bottom-sheet{position:absolute;bottom:0;left:0;right:0;background:#fff;border-radius:28px 28px 0 0;padding:24px 20px 40px;box-shadow:0 -10px 40px #0000001a;animation:slide-up-anim .35s cubic-bezier(.16,1,.3,1) forwards;margin:0;max-width:unset}.sheet-handle{width:40px;height:5px;background:#e2e8f0;border-radius:10px;margin:0 auto 20px}.folder-modal h3{margin:0 0 12px;font-size:20px}.folder-modal label,.icon-helper{margin:0 0 8px;display:block;font-size:14px;color:var(--muted)}.folder-modal input{width:100%;min-height:44px;border-radius:12px;border:1px solid var(--line);padding:0 12px;font-size:15px;margin-bottom:12px}.pdf-preview{border:1px solid var(--line);border-radius:14px;background:#f5f7fb;height:52vh;min-height:280px;overflow:hidden;margin-bottom:14px}.pdf-preview iframe{width:100%;height:100%;border:none}.pdf-placeholder{height:100%;display:grid;place-items:center;color:var(--muted);font-size:14px}.pdf-export-root{position:fixed;left:-9999px;top:0;width:210mm;background:#fff}.pdf-sheet{padding:16mm 14mm 18mm;font-family:SF Pro Text,Avenir Next,Helvetica Neue,sans-serif;color:#0f172a;background:#fff}.pdf-header{border-bottom:1px solid #e2e8f0;padding-bottom:10mm;margin-bottom:10mm}.pdf-header h1{margin:0 0 6px;font-size:22pt;color:#12345a}.pdf-header p{margin:0;font-size:10.5pt;color:#52627a}.pdf-content{font-size:11.5pt;line-height:1.6}.pdf-content h1{font-size:18pt;margin:12px 0 8px;color:#12345a}.pdf-content h2{font-size:14.5pt;margin:10px 0 6px;color:#183b63}.pdf-content h3{font-size:12.5pt;margin:8px 0 6px;color:#1c3c60}.pdf-content ul,.pdf-content ol{padding-left:18px}.pdf-content li{margin-bottom:6px}.pdf-content blockquote{border-left:3px solid #c7d6ea;background:#f4f7fb;padding:8px 12px;border-radius:10px;color:#2a3b57}.pdf-content code{background:#eef3fb;border:1px solid #dbe5f2;padding:2px 6px;border-radius:6px;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.95em}.pdf-content pre{background:#0f172a;color:#f8fafc;padding:12px;border-radius:12px;overflow:auto;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.9em;line-height:1.5}.icon-picker{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:12px}.icon-choice{min-height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:20px}.icon-choice.selected{border-color:var(--primary);background:#edf4ff}.form-error{margin:0 0 10px;color:#d92d20;font-size:13px}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.btn-secondary,.btn-primary{min-height:40px;border-radius:10px;padding:0 14px;font-weight:600;border:1px solid transparent}.btn-secondary{background:#f4f6fb;border-color:var(--line)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:disabled{opacity:.55}.bottom-nav{position:absolute;left:var(--tabbar-side-gap);right:var(--tabbar-side-gap);bottom:calc(var(--tabbar-bottom-gap) + env(safe-area-inset-bottom));height:var(--tabbar-height);background:#fffffff0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid #e8ebf0;border-radius:24px;box-shadow:0 14px 30px #1018281f;display:flex;justify-content:space-around;align-items:center;padding:4px;animation:float-up .3s ease;z-index:70}.nav-item{text-decoration:none;color:#5f6c7b;font-size:12px;line-height:1.1;display:grid;justify-items:center;gap:4px;padding:8px 12px;border-radius:16px;transition:color .18s ease,background .18s ease}.nav-item .icon{width:20px;height:20px;display:inline-grid;place-items:center}.nav-item .icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav-item.active{color:#0f172a;background:#eff4ff}.surface-card{border-radius:16px;border:1px solid var(--line);background:var(--surface-2);box-shadow:0 10px 20px #1018280f;margin-bottom:12px;padding:16px}.fab-btn{position:absolute;right:20px;bottom:calc(var(--tabbar-safe-offset) + 20px);width:56px;height:56px;border-radius:28px;background:var(--primary);color:#fff;border:none;display:grid;place-items:center;font-size:28px;box-shadow:0 12px 28px #1877f259;z-index:60;transition:transform .2s cubic-bezier(.2,.8,.2,1);cursor:pointer}.fab-btn:active{transform:scale(.9)}.native-list{background:#fff;border-radius:20px;padding:8px;box-shadow:0 8px 20px #0f172a0a;margin-bottom:24px}.native-list-item{display:flex;align-items:center;padding:14px 12px;gap:14px;border-radius:14px;transition:background .15s;text-align:left;border:none;background:transparent;width:100%;min-width:0;cursor:pointer;position:relative;overflow:hidden}.native-list-item:active{background:var(--surface)}.native-list-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#eef4ff,#dae7fa);display:grid;place-items:center;font-size:20px;flex-shrink:0}.native-list-icon.note{background:#f8fafc;border:1px solid var(--line);color:#64748b}.native-list-content{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px;overflow:hidden}.native-list-title{font-weight:600;font-size:16px;color:#0f172a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}.native-list-desc{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}.native-list-chevron{color:#cbd5e1;display:grid;place-items:center}.native-list-chevron svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.native-list-actions{display:flex;gap:8px;align-items:center}.native-list-btn{width:32px;height:32px;border-radius:10px;border:none;background:#f1f5f9;color:#64748b;display:grid;place-items:center;transition:background .15s,color .15s}.native-list-btn.danger{background:#fff1f2;color:#e11d48}.native-list-btn:active{transform:scale(.92)}.calendar-page{display:grid;grid-template-rows:auto auto minmax(0,1fr);gap:10px;height:100%;min-height:0;overflow:hidden}.calendar-top-row .section-title{margin:4px 0}.calendar-mini-wrap{margin:0}.calendar-mini-card{padding:10px 8px;margin-bottom:0}.calendar-month-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.calendar-month-label{font-weight:700;font-size:13px}.calendar-day-panel{min-height:0;margin-bottom:0;display:flex;flex-direction:column;flex:1;overflow:hidden}.calendar-day-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}.calendar-day-title{margin:0;font-weight:700;font-size:15px;text-transform:capitalize}.calendar-day-counter{font-size:12px;color:var(--muted);white-space:nowrap}.calendar-events-list{display:grid;gap:8px;overflow:auto;padding-right:2px;min-height:0;flex:1;overscroll-behavior:contain}.calendar-empty-state{text-align:center;padding:20px 0;color:var(--muted);font-size:14px}.calendar-empty-emoji{font-size:28px;margin-bottom:6px}.calendar-event-row{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 12px;transition:opacity .2s}.calendar-event-row.done{opacity:.55}.calendar-event-toggle{width:22px;height:22px;border:none;background:transparent;color:var(--primary);cursor:pointer;padding:0;display:grid;place-items:center;flex-shrink:0}.calendar-event-color{width:3px;height:34px;border-radius:4px;flex-shrink:0}.calendar-event-content{flex:1;min-width:0}.calendar-event-title{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calendar-event-row.done .calendar-event-title{text-decoration:line-through;color:var(--muted)}.calendar-event-time{font-size:12px;color:var(--muted)}.calendar-event-delete{border:none;background:transparent;color:#a7b0bf;font-size:12px;cursor:pointer;padding:4px;border-radius:6px;flex-shrink:0}.surface-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.notes-list{display:grid;gap:10px}.note-card{min-height:130px;padding:16px;border-radius:18px;background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(212,226,250,.8);box-shadow:0 8px 24px #234b9b0f,inset 0 1px #fff;transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s ease}.note-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px #234b9b1a,inset 0 1px #fff}.fade-up{animation:fade-up .35s ease both}.profile-layout{display:grid;justify-items:center;gap:10px;margin-top:20px}.profile-layout h2{margin:2px 0 0;font-size:34px}.profile-layout p{margin:0 0 8px;color:var(--muted)}.list-pill{width:100%;min-height:52px;border-radius:14px;border:1px solid var(--line);background:#fff;font-size:16px;font-weight:600}.logout-btn{width:100%;min-height:52px;border-radius:14px;border:none;background:var(--primary);color:#fff;font-weight:700;margin-top:6px}.message-stack{margin-top:24px;display:grid;gap:10px;padding-bottom:calc(var(--tabbar-safe-offset) + 90px);flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain}.message-bubble{position:relative;max-width:88%;border-radius:16px;background:#f2f4f7;border:1px solid var(--line);padding:12px 14px}.message-content{margin:0;padding-right:20px;overflow-wrap:anywhere}.message-content.plain-text{white-space:pre-wrap}.message-content h1,.message-content h2,.message-content h3,.message-content p,.message-content ul,.message-content ol,.message-content blockquote,.message-content pre{margin:0 0 10px}.message-content h1{font-size:19px}.message-content h2{font-size:17px}.message-content h3{font-size:15px}.message-content ul,.message-content ol{padding-left:18px}.message-content li+li{margin-top:4px}.message-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:12px;background:#eef2f7;padding:1px 4px;border-radius:5px}.message-content pre{background:#111827;color:#f3f4f6;border-radius:10px;padding:10px;overflow:auto}.message-content pre code{background:transparent;padding:0;color:inherit}.message-content blockquote{border-left:3px solid #c6d8fb;padding-left:9px;color:#4e5f7a}.message-content a{color:#1e4ea8;text-decoration:underline}.message-content hr{border:none;border-top:1px solid #d7deea;margin:10px 0}.message-content>:last-child{margin-bottom:0}.message-content table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:10px 0;font-size:13px;-webkit-overflow-scrolling:touch}.message-content th,.message-content td{padding:8px 12px;border:1px solid #d7deea;text-align:left;white-space:nowrap}.message-content th{background:#eaf0f8;font-weight:700;color:#1a2233;position:sticky;top:0}.message-content tr:nth-child(2n){background:#f8fafc}.message-content tr:hover{background:#edf2ff}.message-bubble.streaming .message-content:after{content:"";display:inline-block;width:7px;height:1em;margin-left:3px;vertical-align:-.12em;border-radius:2px;background:#7a879a;animation:typing-caret .9s steps(1) infinite}.thinking-bubble{display:inline-flex;align-items:flex-start;min-height:40px;background:transparent!important;border:none!important;box-shadow:none!important;padding:4px 0 10px!important;margin:0!important}.thinking-loader{position:relative;display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:18px;background:#f1f4f9;box-shadow:0 2px 8px #18408c0a;transform-origin:left bottom;animation:bubble-pop .3s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes bubble-pop{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.thinking-loader:before{display:none}.thinking-loader.inline{padding:0;background:transparent;box-shadow:none;animation:none}.thinking-text{display:none}.thinking-dots{display:flex;align-items:center;gap:5px}.thinking-dots i{width:7px;height:7px;border-radius:50%;background-color:#9bacce;animation:typing-dot 1.4s infinite ease-in-out both}.thinking-dots i:nth-child(1){animation-delay:-.32s}.thinking-dots i:nth-child(2){animation-delay:-.16s}.thinking-dots i:nth-child(3){animation-delay:0s}@keyframes typing-dot{0%,80%,to{transform:scale(.7);background-color:#9bacce;opacity:.6}40%{transform:scale(1.1) translateY(-2px);background-color:#4b86ff;opacity:1}}.quiz-progress-widget{width:260px;padding:20px;background:linear-gradient(135deg,#fff,#f8faff);border-radius:20px;border:1px solid #e2e8f4;box-shadow:0 8px 32px #4b86ff1a;animation:bubble-pop .4s cubic-bezier(.175,.885,.32,1.275) forwards}.quiz-progress-header{display:flex;align-items:center;gap:10px;margin-bottom:16px}.quiz-progress-icon{font-size:22px;animation:quiz-icon-pulse 1.5s ease infinite}@keyframes quiz-icon-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}.quiz-progress-title{font-size:15px;font-weight:700;color:#1a2233}.quiz-progress-bar-track{width:100%;height:8px;background:#e8edf5;border-radius:99px;overflow:hidden;margin-bottom:16px}.quiz-progress-bar-fill{height:100%;background:linear-gradient(90deg,#4b86ff,#7c3aed,#ec4899);border-radius:99px;transition:width .5s cubic-bezier(.16,1,.3,1);position:relative}.quiz-progress-bar-fill:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 1.5s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.quiz-progress-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:14px}.quiz-step{display:flex;flex-direction:column;align-items:center;gap:4px}.quiz-step-dot{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;background:#e8edf5;color:#8b9bb4;transition:all .3s ease}.quiz-step.active .quiz-step-dot{background:linear-gradient(135deg,#4b86ff,#7c3aed);color:#fff;box-shadow:0 2px 8px #4b86ff66;animation:quiz-icon-pulse 1s ease infinite}.quiz-step.done .quiz-step-dot{background:#22c55e;color:#fff}.quiz-step-label{font-size:10px;font-weight:600;color:#8b9bb4;text-align:center;transition:color .3s}.quiz-step.active .quiz-step-label,.quiz-step.done .quiz-step-label{color:#1a2233}.quiz-progress-status{margin:0;text-align:center;font-size:13px;font-weight:600;color:#4b86ff;animation:fade-up .3s ease both}.message-copy-btn{position:absolute;top:7px;right:7px;width:24px;height:24px;border-radius:7px;border:1px solid #d6deea;background:#fff;color:#64748b;display:grid;place-items:center;padding:0}.message-copy-btn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.file-chip{margin-top:8px;border:1px solid #cfe0ff;background:#f2f7ff;color:#1a4fa3;border-radius:10px;padding:6px 10px;font-size:12px;font-weight:600}.attachment-list{margin-top:6px;display:flex;gap:6px;flex-wrap:wrap}.attachment-chip{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:600;border:1px solid #cfe0ff;background:#f4f8ff;color:#1e4ea8;position:relative}.attachment-chip.image{border-color:#b9e4ff;background:#eff9ff;color:#19608a}.attachment-chip.pdf{border-color:#ffd6d6;background:#fff5f5;color:#a12626}.attachment-chip.processing{opacity:.7}.attachment-chip.error{border-color:#f1c0c0;background:#fff0f0;color:#8a1d1d}.chip-remove{border:none;background:transparent;color:inherit;font-size:14px;line-height:1;padding:0 2px;cursor:pointer}.chip-spinner{width:10px;height:10px;border-radius:50%;border:2px solid rgba(30,78,168,.3);border-top-color:#1e4ea8e6;animation:chip-spin .8s linear infinite}.chip-error{font-size:12px;font-weight:700}.message-bubble.mine{margin-left:auto;background:#eaf2ff;border-color:#d7e5ff}.history-overlay{position:absolute;inset:0;background:#00000059;backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);z-index:130;animation:fade-in .2s ease-out}.history-panel{position:absolute;top:0;left:0;bottom:0;width:min(80%,320px);background:#fff;color:#1a2233;box-shadow:6px 0 24px #0000001a;padding:max(16px,env(safe-area-inset-top)) 14px max(16px,env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:16px;animation:slide-in-left .25s cubic-bezier(.22,1,.36,1);z-index:131;overflow:hidden}.history-handle{display:none}.history-head{display:flex;justify-content:space-between;align-items:center;gap:6px;flex-shrink:0}.history-head h3{margin:0;font-size:18px;font-weight:800;color:#1a2233;letter-spacing:-.02em}.history-new-btn{min-height:38px;height:38px;min-width:38px;width:38px;padding:0;border-radius:10px;display:grid;place-items:center;background:#f0f2f5;color:#1a2233;border:1px solid #e5eaf0;cursor:pointer;transition:background .15s}.history-new-btn:active{background:#e2e6eb}.history-handle{width:36px;height:4px;border-radius:3px;background:#d1d5db;margin:0 auto 8px}.history-list{overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:4px;flex:1;min-height:0;padding-right:4px}.history-empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 0;gap:8px}.history-empty-icon{font-size:36px;opacity:.4}.history-empty{font-size:13px;color:#94a3b8;margin:0}.history-item-row{display:flex;align-items:center;position:relative;width:100%}.history-item{flex:1;min-width:0;width:100%;text-align:left;border:none;border-radius:10px;background:transparent;color:#374151;padding:10px 44px 10px 10px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background .1s;font-size:14px}.history-item:hover,.history-item:active{background:#f3f5f8}.history-item.active{background:#eef3ff;color:#1e5dd9}.history-item-icon{flex-shrink:0;width:28px;height:28px;border-radius:8px;background:#f0f2f5;display:grid;place-items:center;color:#64748b}.history-item.active .history-item-icon{background:#1e5dd91a;color:#1e5dd9}.history-item-label{flex:1;min-width:0;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.history-delete-btn{position:absolute;right:4px;width:34px;height:34px;border-radius:8px;border:none;background:transparent;color:#94a3b8;display:grid;place-items:center;padding:0;cursor:pointer;transition:color .15s,background .15s;opacity:0}.history-item-row:hover .history-delete-btn{opacity:1}.history-delete-btn:hover,.history-delete-btn:active{background:#fef2f2;color:#ef4444}.history-delete-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.history-item-title{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item-meta{display:block;font-size:11px;color:#94a3b8}.history-item.active{border-color:#bfd4ff;background:linear-gradient(180deg,#f5f9ff,#ebf3ff);box-shadow:0 12px 22px #18418429}.history-empty{margin:2px 8px;color:#69758a}.folder-title{margin:0}.card-content{margin:8px 0 0;font-size:14px;color:var(--muted);white-space:pre-wrap;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:5;line-clamp:5;-webkit-box-orient:vertical}.card-meta{margin-top:6px;font-size:11px;color:#8a97aa}.card-textarea{width:100%;min-height:110px;border-radius:12px;border:1px solid var(--line);padding:10px 12px;font-size:14px;resize:vertical;margin-bottom:10px}.card-clickable{cursor:pointer}.card-read-content{margin:8px 0 0;color:var(--text);white-space:pre-wrap;max-height:50vh;overflow:auto}.file-download-link{text-decoration:none;display:inline-flex;align-items:center}.quiz-widget{margin-top:10px;border:1px solid #dce7fb;border-radius:14px;background:#f8fbff;padding:12px}.quiz-modal{width:min(96vw,640px);max-height:88vh;overflow:auto}.quiz-widget h4{margin:0 0 4px;font-size:15px}.quiz-topic{margin:0 0 10px;font-size:12px;color:var(--muted)}.quiz-progress{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding:8px 10px;border-radius:10px;background:#f1f6ff;color:#3a4d6f;font-size:12px}.quiz-questions{display:grid;gap:10px}.quiz-question{border-radius:18px;background:linear-gradient(180deg,#fff,#f2f7ff);border:1px solid rgba(92,147,255,.35);padding:14px}.quizlet-card{min-height:220px;display:grid;align-content:start;gap:10px;box-shadow:0 12px 28px #14315d1f}.quiz-question b{font-size:13px}.quiz-options{margin-top:8px;display:grid;gap:6px}.quiz-option{text-align:left;border-radius:12px;border:1px solid rgba(90,141,255,.35);background:#ffffffeb;padding:10px 11px;font-size:13px;font-weight:600;box-shadow:0 6px 14px #1f4a8f14,0 0 12px #4e8eff33;transition:transform .12s ease,background .12s ease,border-color .12s ease,box-shadow .12s ease}.quizlet-option:hover{transform:translateY(-1px) scale(1.01);background:#f1f6ff;box-shadow:0 12px 20px #1f4a8f24,0 0 16px #4e8eff47}.quizlet-option:active{transform:translateY(0) scale(.99)}.quiz-option.selected{border-color:#7aa9ff;background:#e3edff;box-shadow:0 0 0 1px #5a8dff73,0 0 18px #5a8dff73}.quiz-option.correct{border-color:#57a36a;background:#e2f8ea;color:#15592a;box-shadow:0 0 16px #4cc27c66}.quiz-option.wrong{border-color:#d77474;background:#ffecec;color:#7b2222;box-shadow:0 0 14px #d7747459}.quiz-explanation{margin:8px 0 0;font-size:12px;color:#4f617e}.quiz-actions{margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.quiz-score{margin:0;font-weight:700;color:#1d4fa3}.quiz-summary{margin-top:6px;padding:10px 12px;border-radius:10px;background:#eef5ff;border:1px solid #d5e4ff;font-size:13px;color:#345079}.quiz-launch{margin-top:8px;background:#eaf2ff}.quiz-game-page{background:radial-gradient(120% 120% at 0% 0%,#72a8ff59,#72a8ff00 55%),radial-gradient(120% 120% at 100% 0%,#93e3ff59,#93e3ff00 60%),linear-gradient(180deg,#f7f9ff,#eef4ff)}.quiz-game-header h2{margin:0;font-size:18px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#1a3b78}.quiz-step-badge{min-width:52px;text-align:center;padding:6px 10px;border-radius:999px;background:#2e77ff26;color:#1f4d97;box-shadow:0 0 14px #2e77ff59;font-size:12px;font-weight:700}.quiz-game-topic{margin:4px 0 8px;color:#395173;font-size:13px;font-weight:600}.quiz-game-progress{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;margin-bottom:10px;border:1px solid #dce8fc;border-radius:14px;background:#f6f9ff;color:#334d73;padding:10px 12px;font-size:12px}.quiz-progress-meta{display:grid;gap:2px;font-weight:600}.quiz-progress-meta span{color:#5d6f8a;font-weight:500}.quiz-progress-bar{position:relative;height:8px;border-radius:999px;background:#e4efff;overflow:hidden}.quiz-progress-bar span{position:absolute;inset:0 auto 0 0;width:0;border-radius:999px;background:linear-gradient(90deg,#2b74ff,#7dd7ff);transition:width .26s ease}.quiz-progress-value{font-weight:700;color:#2153a6}.quiz-game-card{min-height:260px;animation:quiz-card-in .22s ease;border:1px solid rgba(78,142,255,.35);box-shadow:0 0 0 1px #4e8eff26,0 18px 40px #2350a033,0 0 22px #4e8eff40}.quiz-game-actions{margin-top:8px;margin-bottom:calc(var(--tabbar-safe-offset) + env(safe-area-inset-bottom))}.quiz-result-card{border-radius:18px;border:1px solid rgba(98,150,255,.35);background:linear-gradient(180deg,#fff,#f2f7ff);padding:14px;margin-bottom:10px;box-shadow:0 12px 26px #1f4a8f1f}.quiz-result-card h3{margin:0;font-size:20px}.quiz-final-score{margin:8px 0 6px;font-size:20px;font-weight:800;color:#1d4fa3;text-shadow:0 0 12px rgba(46,119,255,.4)}.quiz-review-list{margin-top:10px;display:grid;gap:8px}.quiz-review-item{border-radius:12px;padding:10px;border:1px solid rgba(90,141,255,.25);background:#f8fbffe6}.quiz-review-item.ok{border-color:#a9d8b6;background:#effaf2}.quiz-review-item.ko{border-color:#f1c5c5;background:#fff4f4}.quiz-review-item b{display:block;margin-bottom:4px;font-size:13px}.quiz-review-item p{margin:0;font-size:12px;color:#30465f}.quiz-review-item p+p{margin-top:3px}.quiz-empty-card{margin-top:18px;border-radius:16px;border:1px solid #dce7fb;background:linear-gradient(180deg,#fff,#f8fbff);padding:14px}.quiz-empty-card h3{margin:0 0 6px}.quiz-empty-card p{margin:0 0 12px;color:#51647f}.rich-editor-wrap{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:10px}.editor-toolbar{display:flex;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:6px;padding:8px;border-bottom:1px solid var(--line);background:#f9fbff}.editor-toolbar button{min-height:30px;padding:0 8px;border:1px solid #d8deea;border-radius:8px;background:#fff;font-size:12px;flex-shrink:0}.rich-editor{min-height:calc(100vh - 200px);padding:10px 0;outline:none;font-size:16px;line-height:1.5}.rich-editor:empty:before{content:attr(data-placeholder);color:#98a2b3}.editor-modal{width:min(96vw,760px);max-height:90vh;overflow:auto}.editor-screen{position:absolute;inset:0;z-index:140;background:#fff;display:grid;grid-template-rows:auto 1fr}.editor-screen-header{position:sticky;top:0;z-index:2;min-height:56px;padding:10px 14px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;border-bottom:1px solid #e6ebf5;background:#ffffffeb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.editor-screen-header strong{text-align:center;font-size:14px;color:#3a4860}.editor-screen-header .btn-primary{justify-self:end}.editor-screen-body{overflow:auto;padding:20px 16px 80px;background:#fff;display:flex;flex-direction:column}.editor-title-input{width:100%;border:none;outline:none;background:transparent;font-size:26px;font-weight:700;color:#1a1a1a;margin-bottom:6px;padding:0;letter-spacing:-.3px}.editor-title-input::placeholder{color:#c7c7cc}.editor-screen .rich-editor-wrap{border:none;border-radius:0;background:transparent;box-shadow:none}.editor-screen .editor-toolbar{position:fixed;bottom:0;left:0;right:0;z-index:200;margin:0 14px calc(14px + env(safe-area-inset-bottom));padding:8px 12px;display:flex;align-items:center;gap:8px;background:#ffffffbf;backdrop-filter:blur(24px) saturate(200%);-webkit-backdrop-filter:blur(24px) saturate(200%);border:1px solid rgba(255,255,255,.4);border-radius:16px;overflow-x:auto;scrollbar-width:none;flex-wrap:nowrap;box-shadow:0 8px 32px #0000001f}.editor-screen .rich-editor-wrap:not(.focused) .editor-toolbar{display:none}.editor-screen .editor-toolbar::-webkit-scrollbar{display:none}.toolbar-group{display:flex;align-items:center;gap:4px;background:#0000000a;padding:4px;border-radius:10px;flex-shrink:0}.toolbar-sep{width:1px;height:20px;background:var(--line);margin:0 4px;flex-shrink:0}.tb-btn{min-height:32px;min-width:32px;padding:0 8px;border:none;border-radius:8px;background:transparent;color:#1a1a1a;font-size:14px;font-weight:500;display:grid;place-items:center;transition:all .2s cubic-bezier(.4,0,.2,1);cursor:pointer}.tb-btn:hover{background:#0000000d;transform:translateY(-1px)}.tb-btn:active{background:#0000001a;transform:translateY(0)}.tb-color,.tb-highlight,.tb-clear{font-size:16px}.tb-clear{color:#ef4444}.editor-color-popover{position:fixed;bottom:calc(60px + env(safe-area-inset-bottom));left:14px;right:14px;z-index:190;background:#fffffff2;backdrop-filter:blur(25px);-webkit-backdrop-filter:blur(25px);border-radius:16px;padding:12px;margin-bottom:10px;border:1px solid rgba(0,0,0,.08);box-shadow:0 -4px 30px #0000001a;animation:slide-up-anim .3s cubic-bezier(.16,1,.3,1)}.color-popover-label{font-size:12px;font-weight:600;color:#64748b;margin:0 0 8px;text-transform:uppercase;letter-spacing:.5px}.color-dots{display:flex;flex-wrap:wrap;gap:10px}.color-dot{width:28px;height:28px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #0000001a;cursor:pointer;transition:transform .2s}.color-dot:hover{transform:scale(1.15)}.editor-screen .rich-editor{min-height:calc(100dvh - 150px);padding:10px 16px 120px;font-size:17px;line-height:1.65;color:#1a1a1a;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Helvetica Neue,sans-serif;outline:none}.editor-screen .rich-editor h1,.editor-screen .rich-editor h2,.editor-screen .rich-editor h3{font-weight:700;color:#000;margin:20px 0 8px}.editor-screen .rich-editor h2{font-size:22px}.editor-screen .rich-editor ul,.editor-screen .rich-editor ol{padding-left:22px}.editor-screen .rich-editor blockquote{border-left:3px solid #007aff;padding-left:12px;color:#555;margin:12px 0}.note-screen{position:absolute;inset:0;z-index:145;background:#fff;display:grid;grid-template-rows:auto 1fr}.note-screen-header{padding-top:calc(10px + env(safe-area-inset-top));box-shadow:0 4px 14px #1018280f}.note-screen-title{letter-spacing:.3px}.note-screen-body{overflow:auto;padding:18px 20px calc(88px + env(safe-area-inset-bottom));background:linear-gradient(180deg,#fff,#fbfdff)}.note-screen-body h1{margin:0 0 14px;font-size:30px;line-height:1.2}.note-meta-header{display:inline-block;font-size:11px;color:#8b98aa;margin-bottom:10px}.note-full-content{max-height:none;overflow:visible;font-size:16px;line-height:1.7;color:#212c3b}.note-markdown{margin-top:14px;padding:0;border:none;border-radius:0;background:transparent;box-shadow:none}.note-actions{justify-self:end;display:flex;gap:6px;align-items:center}.icon-circle-btn{width:38px;height:38px;border-radius:11px;border:1px solid #dbe3f2;background:#fff;display:grid;place-items:center;color:#30425f}.icon-circle-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.btn-danger{width:38px;height:38px;border-radius:11px;border:1px solid #f2c0c0;background:#fff1f1;color:#a62828;display:grid;place-items:center}.btn-danger svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.rich-read-content h1,.rich-read-content h2,.rich-read-content h3,.rich-read-content p,.rich-read-content ul,.rich-read-content ol,.rich-read-content blockquote{margin:0 0 10px}.rich-read-content ul,.rich-read-content ol{padding-left:18px}.rich-read-content li{margin-bottom:6px}.rich-read-content blockquote{border-left:3px solid #c7d6ea;background:#f4f7fb;padding:8px 12px;border-radius:10px;color:#2a3b57}.rich-read-content hr{border:none;height:1px;background:#dbe5f2;margin:14px 0}.rich-read-content code{background:#eef3fb;border:1px solid #dbe5f2;padding:2px 6px;border-radius:6px;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.92em}.rich-read-content pre{background:#0f172a;color:#f8fafc;padding:12px;border-radius:12px;overflow:auto;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.9em;line-height:1.5}.rich-read-content pre code{background:transparent;border:none;padding:0;color:inherit}.md-table{width:100%;border-collapse:separate;border-spacing:0;margin:16px 0;font-size:14.5px;border-radius:10px;overflow:hidden;box-shadow:0 0 0 1px #dbe5f2,0 4px 12px #1f36550a}.md-table th,.md-table td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid #edf2f9}.md-table tr:last-child td{border-bottom:none}.md-table th{background:linear-gradient(180deg,#f6f9fc,#edf3fb);color:#12284b;font-weight:700}.katex{font-size:1.02em}.katex-display{margin:12px 0;overflow-x:auto;padding-bottom:2px}.note-markdown h1,.note-markdown h2,.note-markdown h3{color:#122744;letter-spacing:.01em}.revision-intro{margin:0 0 10px;color:#334a68;font-size:15px;line-height:1.55}.revision-sections{display:grid;gap:16px}.revision-section-card{background:#fff;border:1px solid rgba(215,226,243,.8);border-radius:20px;padding:20px 22px;box-shadow:0 10px 30px #1c40850a,0 2px 8px #1c408505;position:relative;overflow:hidden}.revision-section-card:after{content:"";position:absolute;top:0;left:0;width:5px;height:100%;background:linear-gradient(180deg,#5a8dec,#98c0ff);border-radius:6px 0 0 6px}.revision-section-card h2{margin:0 0 12px;font-size:20px;font-weight:800;line-height:1.25;color:#12284b;letter-spacing:-.01em}.revision-section-content{font-size:15.5px;line-height:1.7;color:#2b3d57}.revision-section-content p{margin:0 0 10px}.revision-section-content p:last-child{margin-bottom:0}.note-markdown h1{font-size:32px;line-height:1.25;margin-bottom:18px;font-weight:800;background:linear-gradient(90deg,#12284b,#3f6db2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.02em}.note-markdown h2{font-size:24px;line-height:1.25;margin-top:16px}.note-markdown h3{font-size:20px;line-height:1.3;margin-top:12px}.note-markdown ul,.note-markdown ol{padding-left:18px}.note-markdown li{margin-bottom:6px}.note-markdown strong{font-weight:700;color:#12284b;background:linear-gradient(104deg,#ffe48acc,#ffd54fcc);background-repeat:no-repeat;background-size:100% .35em;background-position:0 90%;padding:0 2px;border-radius:2px}.note-markdown p{color:#253a57}.note-markdown code{background:#eef3fb;border:1px solid #dbe5f2;padding:2px 6px;border-radius:6px;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.92em}.note-markdown pre{background:#0d1322;color:#e2e8f0;padding:14px;border-radius:14px;overflow:auto;font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:.9em;line-height:1.55;box-shadow:inset 0 2px 10px #0003;border:1px solid #1e293b}.note-markdown pre code{background:transparent;border:none;padding:0;color:inherit}.note-markdown .revision-section-card h2{margin:0 0 8px;font-size:18px;line-height:1.15;color:#1b3558}.note-markdown p{color:#24364f}.note-markdown ul,.note-markdown ol{padding-left:22px}.note-markdown li{margin:5px 0}.note-markdown li::marker{color:#3f6db2}.rich-read-content blockquote{border-left:4px solid #5a8dec;background:linear-gradient(90deg,#f4f8ffcc,#fafcffcc);padding:12px 16px;border-radius:0 12px 12px 0;color:#2b3d57;font-style:italic;margin:16px 0;box-shadow:0 2px 12px #5a8dec0f}.rich-read-content blockquote strong{background:none;color:#1a4f9c}.rich-read-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:12px;background:#eef2f7;padding:1px 4px;border-radius:5px}.rich-read-content pre{margin:0 0 10px;background:#111827;color:#f3f4f6;border-radius:10px;padding:10px;overflow:auto}.note-markdown pre{border:1px solid #27364e;box-shadow:inset 0 0 0 1px #ffffff0f}.rich-read-content pre code{background:transparent;padding:0;color:inherit}.rich-read-content a{color:#1e4ea8;text-decoration:underline}.rich-read-content hr{border:none;border-top:1px solid #d7deea;margin:10px 0}.note-markdown hr{border-top-color:#ccd8ea;margin:14px 0}.rich-read-content,.note-full-content{overflow-wrap:anywhere}.rich-read-content img,.rich-read-content video,.rich-read-content iframe,.rich-read-content table{max-width:100%}@keyframes fade-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes float-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slide-in-left{0%{transform:translate(-20px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes typing-caret{0%,50%{opacity:1}50.01%,to{opacity:0}}@keyframes thinking-bounce{0%,80%,to{transform:translateY(0);opacity:.6}40%{transform:translateY(-6px);opacity:1}}@keyframes thinking-shimmer{0%{transform:translate(-120%)}60%{transform:translate(120%)}to{transform:translate(120%)}}@keyframes quiz-card-in{0%{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes chip-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:720px){.app-bg{padding:0}.phone-shell{max-width:none;border-radius:0;border:none;box-shadow:none}.quiz-game-page{padding-bottom:calc(92px + env(safe-area-inset-bottom))}.quiz-game-header{grid-template-columns:auto minmax(0,1fr) auto;gap:8px}.quiz-game-header h2{font-size:16px}.quiz-step-badge{min-width:46px;padding:5px 8px;font-size:11px}.quiz-game-topic{margin:2px 0 8px;font-size:12px}.quiz-game-progress{grid-template-columns:1fr;gap:6px;padding:8px 10px;font-size:11px}.quiz-game-card{min-height:220px}.quiz-option{min-height:44px;padding:10px 11px;font-size:14px}.quiz-explanation{font-size:13px}.quiz-game-actions{display:grid;grid-template-columns:1fr;gap:8px;margin-bottom:calc(84px + env(safe-area-inset-bottom))}.quiz-game-actions .btn-primary,.quiz-game-actions .btn-secondary{width:100%;min-height:44px}.quiz-result-card{padding:12px}.quiz-final-score{font-size:18px}.quiz-review-item b,.quiz-review-item p{font-size:12px}.calendar-page{gap:8px}.calendar-mini-card{padding:9px 7px}.calendar-event-row{padding:9px 10px;border-radius:12px}}@media(display-mode:standalone){body{background:#fff}.app-bg{padding:0}.phone-shell{max-width:none;border-radius:0;border:none;box-shadow:none;min-height:100svh;min-height:100dvh}}@media(max-width:390px){.chat-header h1{font-size:34px}.folder-grid,.surface-grid{grid-template-columns:1fr}.note-screen-body{padding:14px 14px calc(88px + env(safe-area-inset-bottom))}.note-screen-body h1{font-size:24px}.editor-screen-header{grid-template-columns:auto 1fr auto;padding:8px 10px;gap:8px}.editor-screen-header strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quiz-game-header h2{font-size:15px}.quiz-game-progress{flex-direction:column;align-items:flex-start;gap:4px}.quiz-question b{font-size:12px}.quiz-option{font-size:13px;padding:9px 10px}.calendar-day-title{font-size:14px}.calendar-day-counter{font-size:11px}.calendar-event-title{font-size:13px}}.k-quiz-page{padding:0;display:flex;flex-direction:column;height:100vh;min-height:100dvh;max-height:100dvh;background-color:var(--surface);overflow:hidden;position:relative;overscroll-behavior:none}.k-start-screen,.k-play-screen,.k-result-screen{flex:1;display:flex;flex-direction:column;padding:24px;position:relative;overflow-y:hidden;height:100%}.k-back-btn{position:absolute;top:max(24px,env(safe-area-inset-top));left:24px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;box-shadow:0 4px 12px #0000000d;cursor:pointer;z-index:10}.k-back-btn svg{width:20px;height:20px;stroke:var(--text);stroke-width:2;fill:none}.k-start-content{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;animation:slide-up-anim .4s ease-out}.k-start-icon{font-size:80px;margin-bottom:24px;animation:pulse-soft 2s infinite ease-in-out}.k-start-title{font-size:32px;font-weight:800;color:#101828;margin:0 0 12px;line-height:1.2}.k-start-topic{font-size:18px;color:var(--muted);margin:0 0 24px}.k-start-meta{background:#fff;padding:8px 16px;border-radius:20px;font-weight:600;color:var(--primary);margin-bottom:40px;box-shadow:0 4px 12px #0000000d}.k-btn-play{background:var(--primary);color:#fff;border:none;border-bottom:4px solid #0d5bbd;padding:18px 48px;border-radius:16px;font-size:22px;font-weight:800;cursor:pointer;transition:transform .1s,border-bottom-width .1s;box-shadow:0 8px 24px #1877f24d}.k-btn-play:active{transform:translateY(4px);border-bottom-width:0px;margin-bottom:4px}.k-play-header{display:flex;align-items:center;gap:16px;margin-bottom:24px;padding-top:max(12px,env(safe-area-inset-top))}.k-progress-bar{flex:1;height:12px;background:#e2e8f0;border-radius:8px;overflow:hidden}.k-progress-fill{height:100%;background:var(--primary);transition:width .3s ease-out}.k-step-indicator{font-weight:700;color:var(--muted);font-size:14px}.k-question-card{background:#fff;border-radius:24px;padding:32px 24px;text-align:center;box-shadow:0 12px 32px #0000000f;margin-bottom:32px;flex-shrink:0}.k-question-text{font-size:22px;font-weight:700;margin:0;line-height:1.35;color:#101828}.k-options-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:12px;flex:1;min-height:0}.k-option-btn{border:none;border-radius:12px;padding:12px 10px;border-bottom:4px solid rgba(0,0,0,.2);color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;cursor:pointer;text-align:center;transition:transform .15s cubic-bezier(.4,0,.2,1),background-color .3s,opacity .3s;box-shadow:0 4px 12px #00000014;height:100%;min-height:80px}.k-option-btn:active:not(:disabled){transform:scale(.96) translateY(4px);border-bottom-width:0px}.k-option-text{pointer-events:none;line-height:1.25;display:-webkit-box;-webkit-line-clamp:4;line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.k-option-btn.k-dimmed{opacity:.55;transform:scale(.98);background-color:#94a3b8!important;border-bottom-color:#64748b!important}.k-option-btn.k-wrong{background-color:#f43f5e!important;border-bottom-color:#be123c!important;animation:shake .4s cubic-bezier(.36,.07,.19,.97) both;z-index:2}.k-option-btn.k-correct{background-color:#22c55e!important;border-bottom-color:#15803d!important;animation:bounce-gentle .5s ease;z-index:3;box-shadow:0 0 20px #22c55e66}.k-feedback-panel{position:absolute;bottom:0;left:0;right:0;padding:24px 24px calc(24px + env(safe-area-inset-bottom));border-radius:32px 32px 0 0;box-shadow:0 -12px 40px #0000001f;z-index:20}.k-feedback-panel.positive{background:#dcfce7}.k-feedback-panel.positive h3{color:#166534}.k-feedback-panel.negative{background:#ffe4e6}.k-feedback-panel.negative h3{color:#9f1239}.k-feedback-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.k-feedback-header h3{font-size:24px;font-weight:800;margin:0}.k-next-btn{background:#0f172a;color:#fff;border:none;padding:12px 24px;border-radius:12px;font-weight:700;font-size:16px;cursor:pointer;white-space:nowrap}.k-explanation{font-size:15px;line-height:1.5;color:#334155;margin:0;background:#fff9;padding:12px;border-radius:12px}.k-result-screen{text-align:center;padding-top:max(40px,env(safe-area-inset-top));overflow-y:auto;padding-bottom:calc(120px + env(safe-area-inset-bottom))}.k-result-header{margin-bottom:32px}.k-result-emoji{font-size:70px;display:block;margin-bottom:16px;animation:bounce-gentle 1s}.k-result-title{font-size:32px;font-weight:800;margin:0 0 24px}.k-score-circle{width:140px;height:140px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#818cf8);color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 24px;box-shadow:0 16px 32px #6366f14d;gap:4px}.k-score-value{font-size:56px;font-weight:800}.k-score-total{font-size:24px;opacity:.8;margin-top:18px}.k-result-msg{font-size:18px;color:var(--muted);font-weight:600}.k-review-list{text-align:left;background:#fff;border-radius:24px;padding:24px;box-shadow:0 12px 32px #0000000f;margin-bottom:32px}.k-review-list h3{margin:0 0 20px;font-size:20px}.k-review-item{margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--line)}.k-review-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.k-review-q{font-weight:700;margin-bottom:8px;line-height:1.4}.k-review-num{color:var(--primary)}.k-review-ans{font-size:14px;margin-bottom:4px;display:flex;align-items:flex-start;gap:8px;padding:8px 12px;border-radius:8px}.k-review-ans.wrong{background:#ffe4e6;color:#9f1239}.k-review-ans.right{background:#dcfce7;color:#166534}.k-result-actions{display:flex;gap:12px;flex-direction:column}.k-btn-outline{background:#fff;border:2px solid var(--primary);color:var(--primary);padding:16px;border-radius:16px;font-size:18px;font-weight:700;cursor:pointer}.slide-up-anim{animation:slide-up-anim .4s cubic-bezier(.16,1,.3,1) forwards}@keyframes slide-up-anim{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-soft{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes bounce-gentle{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes shake{10%,90%{transform:translate3d(-3px,0,0)}20%,80%{transform:translate3d(5px,0,0)}30%,50%,70%{transform:translate3d(-7px,0,0)}40%,60%{transform:translate3d(7px,0,0)}}@keyframes logo-pulse{0%{transform:scale(.95);opacity:0}15%{transform:scale(1);opacity:1}85%{transform:scale(1);opacity:1}to{transform:scale(1.05);opacity:0}}@keyframes title-fade{0%{opacity:0;transform:translateY(10px)}20%{opacity:1;transform:translateY(0)}80%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-5px)}}@keyframes splash-fade{0%{opacity:1;pointer-events:auto}80%{opacity:1;pointer-events:auto}to{opacity:0;pointer-events:none}}.splash-screen{position:absolute;inset:0;background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999;animation:splash-fade 2s ease-in-out forwards}.splash-logo-container{width:140px;height:140px;background:#fff;border-radius:50%;box-shadow:0 16px 40px #00000014;display:flex;justify-content:center;align-items:center;overflow:hidden;animation:logo-pulse 2s cubic-bezier(.16,1,.3,1) forwards}.splash-logo-img{width:100%;height:100%;object-fit:cover}.splash-title{margin-top:24px;color:#0f172a;font-size:28px;font-weight:800;letter-spacing:2px;opacity:0;animation:title-fade 2s cubic-bezier(.16,1,.3,1) forwards}@media(min-width:768px){.phone-shell{max-width:800px;border-radius:40px;box-shadow:0 32px 64px #1018281f;margin:24px auto;min-height:calc(100svh - 48px);height:calc(100svh - 48px)}.folder-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.notes-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-content:start;align-items:start}.notes-list .folder-grid{grid-column:1 / -1}.surface-card.note-card{margin-bottom:0;height:100%}.chat-composer-wrap{max-width:760px;margin:0 auto;left:20px;right:20px}.bottom-nav{max-width:600px;margin:0 auto 15px;left:0;right:0;width:100%}.auth-content-wrap{padding:60px 40px}.editor-screen{border-radius:24px;margin:24px;height:calc(100% - 48px);border:1px solid var(--line);box-shadow:0 24px 60px #0000001a}.calendar-page{grid-template-rows:auto minmax(0,1fr);grid-template-columns:320px minmax(0,1fr);gap:20px}.calendar-top-row{grid-column:1 / -1;margin-bottom:4px}.calendar-mini-wrap{margin:0}.calendar-mini-card{height:100%;margin:0}.calendar-day-panel{height:100%;border-radius:16px;border:1px solid var(--line);background:var(--surface-2);padding:16px;box-shadow:0 10px 20px #1018280f}.calendar-empty-state{padding:80px 0}}@media(min-width:1024px){.phone-shell{max-width:1000px}.folder-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.notes-list{grid-template-columns:repeat(3,minmax(0,1fr))}.chat-composer-wrap{max-width:960px}}.web-results-container{display:flex;flex-direction:column;gap:4px;margin-top:8px;animation:fade-up .3s ease both}.web-results-header{display:flex;align-items:center;gap:6px;padding:2px 0 6px;font-size:11px;font-weight:600;color:#64748b;text-transform:uppercase;letter-spacing:.4px}.web-result-card{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;background:#ffffffbf;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(226,232,240,.8);text-decoration:none;color:inherit;transition:transform .18s ease,background .18s ease;min-height:0}.web-result-card:active{transform:scale(.98);background:#f1f5f9e6}.web-result-card.pdf{border-left:2px solid #ef4444}.web-result-card.video{border-left:2px solid #f97316}.web-result-icon{width:26px;height:26px;border-radius:6px;background:linear-gradient(135deg,#e0ebff,#c4daff);display:grid;place-items:center;font-size:13px;flex-shrink:0}.web-result-card.pdf .web-result-icon{background:linear-gradient(135deg,#fee2e2,#fecaca)}.web-result-card.video .web-result-icon{background:linear-gradient(135deg,#ffedd5,#fed7aa)}.web-result-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.web-result-title{font-size:12px;font-weight:600;color:#1e293b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.3}.web-result-desc{display:none}.web-result-url{font-size:10px;color:#94a3b8;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.web-result-arrow{color:#cbd5e1;flex-shrink:0}.web-search-widget{border-left:none!important;background:linear-gradient(135deg,#3b82f60f,#6366f10a)!important;border:1px solid rgba(59,130,246,.15)!important}.web-search-icon{display:inline-block;animation:none!important;position:relative}.web-search-icon:after{content:"";position:absolute;inset:-3px;border-radius:50%;border:2px solid rgba(59,130,246,.35);animation:searchPulse 1.4s ease-in-out infinite}@keyframes searchPulse{0%,to{transform:scale(1);opacity:.8}50%{transform:scale(1.3);opacity:0}}.web-search-widget .quiz-progress-bar-fill{background:linear-gradient(90deg,#3b82f6,#6366f1,#3b82f6 80%,#6366f1);background-size:200% 100%;animation:webSearchShimmer 1.4s linear infinite!important;width:100%!important}@keyframes webSearchShimmer{0%{background-position:200% center}to{background-position:-200% center}}.slideshow-launch{background:linear-gradient(135deg,#f97316,#fb923c)!important;color:#fff!important;border:none!important}.slideshow-launch:active{filter:brightness(.95)}.slideshow-widget{border-left:3px solid #f97316}.slideshow-progress-icon{animation:bounce 1s ease infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.slideshow-editor{position:fixed;inset:0;display:flex;flex-direction:column;background:#0f172a;color:#f1f5f9;overflow:hidden;z-index:50;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.slide-in-fwd{animation:slide-in-right .3s cubic-bezier(.25,1,.5,1)}@keyframes slide-in-right{0%{transform:translate(100%)}to{transform:translate(0)}}.se-app-header{display:flex;align-items:center;justify-content:space-between;padding:max(16px,env(safe-area-inset-top)) 16px 12px;background:#0f172ad9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.1);z-index:10;gap:12px}.se-icon-nav,.se-icon-btn{border:none;background:transparent;color:#fff;display:grid;place-items:center;cursor:pointer;transition:opacity .15s,transform .15s}.se-icon-nav:active,.se-icon-btn:active{opacity:.6;transform:scale(.92)}.se-app-title-input{flex:1;background:transparent;border:none;color:#fff;font-size:16px;font-weight:700;text-align:center;outline:none;min-width:0;text-overflow:ellipsis}.se-app-actions-right{display:flex;gap:16px;align-items:center}.se-icon-btn{font-size:20px}.se-main-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;position:relative;overflow:hidden}.se-swipe-hint{position:absolute;top:16px;font-size:11px;opacity:.5;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.se-slide-frame{width:100%;max-width:800px;aspect-ratio:16/10;border-radius:20px;box-shadow:0 24px 64px #0006;display:flex;align-items:center;justify-content:center;padding:24px;position:relative;overflow:hidden;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s}.se-slide-frame:active{transform:scale(.98)}.glass-panel{background:#ffffff08;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.slide-image-wrapper{width:100%;max-height:40%;display:flex;justify-content:center;margin-bottom:12px;border-radius:12px;overflow:hidden;box-shadow:0 8px 24px #0003}.slide-image{width:100%;height:auto;object-fit:cover;border-radius:12px}.se-bottom-carousel{height:90px;min-height:90px;background:#0000004d;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;padding-bottom:max(0px,env(safe-area-inset-bottom))}.se-carousel-strip{display:flex;gap:12px;padding:0 16px;overflow-x:auto;height:100%;align-items:center;width:100%;scrollbar-width:none}.se-carousel-strip::-webkit-scrollbar{display:none}.se-carousel-thumb{flex-shrink:0;width:110px;height:64px;border-radius:12px;border:2px solid transparent;display:flex;flex-direction:column;justify-content:space-between;padding:8px 10px;font-size:11px;text-align:left;position:relative;overflow:hidden;transition:transform .15s,box-shadow .15s}.se-carousel-thumb.active{box-shadow:0 0 0 2px #fffc,0 8px 16px #0006;transform:translateY(-2px)}.se-carousel-thumb:active{transform:scale(.95)}.se-thumb-num{font-weight:800;opacity:.7}.se-thumb-title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.se-carousel-add{flex-shrink:0;width:64px;height:64px;border-radius:12px;border:1px dashed rgba(255,255,255,.3);background:#ffffff0d;display:grid;place-items:center;font-size:24px;transition:background .15s}.se-carousel-add:active{background:#ffffff1a}.se-bottom-sheet{position:absolute;inset:0;pointer-events:none;z-index:100;display:flex;flex-direction:column;justify-content:flex-end}.se-bottom-sheet.open{pointer-events:auto}.se-sheet-backdrop{position:absolute;inset:0;background:#0006;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);opacity:0;transition:opacity .3s}.se-bottom-sheet.open .se-sheet-backdrop{opacity:1}.se-editor-panel-glass{position:relative;background:#141923d9;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid rgba(255,255,255,.15);border-radius:28px 28px 0 0;padding:12px 20px max(24px,env(safe-area-inset-bottom));transform:translateY(100%);transition:transform .35s cubic-bezier(.16,1,.3,1);display:flex;flex-direction:column;gap:16px;max-height:85vh;box-shadow:0 -12px 48px #00000080}.se-bottom-sheet.open .se-editor-panel-glass{transform:translateY(0)}.se-sheet-handle{width:40px;height:5px;border-radius:3px;background:#fff3;margin:0 auto 8px}.se-editor-header-compact{display:flex;justify-content:space-between;align-items:center}.se-slide-number{font-size:15px;font-weight:700;color:#fff}.se-slide-actions-mini{display:flex;background:#ffffff14;border-radius:12px;overflow:hidden}.se-slide-actions-mini button{padding:8px 12px;background:transparent;border:none;border-right:1px solid rgba(255,255,255,.06);color:#fff;font-size:14px}.se-slide-actions-mini button:last-child{border:none}.se-slide-actions-mini button.danger{color:#ef4444}.se-slide-actions-mini button:disabled{opacity:.3}.se-add-mini{background:#3b82f6;color:#fff;border:none;border-radius:12px;padding:8px 14px;font-size:13px;font-weight:600}.se-layout-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.se-layout-row::-webkit-scrollbar{display:none}.se-layout-btn{flex-shrink:0;padding:8px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff0d;color:#a1a1aa;font-size:12px;font-weight:600;display:flex;align-items:center;gap:6px;transition:background .15s,color .15s,border-color .15s}.se-layout-btn.active{background:var(--se-accent);border-color:var(--se-accent);color:#fff}.se-field{display:flex;flex-direction:column;gap:6px}.se-label{font-size:12px;font-weight:600;color:#94a3b8;text-transform:uppercase;letter-spacing:.5px}.se-input,.se-textarea{width:100%;padding:12px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#0003;color:#f8fafc;font-size:15px;outline:none;transition:border-color .2s,background .2s}.se-input:focus,.se-textarea:focus{border-color:var(--se-accent);background:#0006}.se-textarea{min-height:80px;resize:vertical}.se-bullets-list{display:flex;flex-direction:column;gap:8px}.se-bullet-row{display:flex;align-items:center;gap:8px}.se-bullet-dot{color:var(--se-accent);font-size:18px}.se-remove-bullet{width:36px;height:36px;border-radius:10px;border:none;background:#ef44441a;color:#ef4444;font-size:18px}.se-add-bullet-btn{padding:12px;border-radius:12px;border:1px dashed rgba(255,255,255,.2);background:transparent;color:#cbd5e1;font-weight:600;margin-top:4px}.se-theme-overlay{position:absolute;inset:0;background:#00000080;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:110;display:flex;flex-direction:column;justify-content:flex-end;animation:fade-in .2s ease}.se-theme-picker-menu{background:#1e293b;border-radius:28px 28px 0 0;padding:16px 20px max(24px,env(safe-area-inset-bottom));animation:slide-up .3s cubic-bezier(.16,1,.3,1)}.se-theme-picker-handle{width:40px;height:5px;border-radius:3px;background:#ffffff1a;margin:0 auto 16px}.se-bottom-title{margin:0 0 16px;font-size:18px;color:#fff;text-align:center}.se-theme-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.se-theme-card{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px;border-radius:20px;border:2px solid transparent;background:#0f172a;font-weight:600;font-size:13px}.se-theme-card.active{border-color:currentColor}.se-theme-preview-box{width:100%;aspect-ratio:16/10;border-radius:12px;display:grid;place-items:center}.theme-glassmorphism .se-slide-frame{background:linear-gradient(135deg,#ffffff1a,#fff0);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.18);box-shadow:0 8px 32px #1f26875e}.theme-neon-cyber .se-slide-frame{border:1px solid #333;box-shadow:0 0 20px #fb00ff33,inset 0 0 20px #00f7ff1a}.theme-oceanic .se-slide-frame{background:linear-gradient(135deg,#fff,#f0f9ff);border:1px solid #bae6fd}.preview-slide-content,.pres-slide-content{width:100%;height:100%;display:flex;flex-direction:column;justify-content:center}.layout-title{text-align:center;align-items:center}.layout-title h1{font-size:clamp(24px,6vw,42px);font-weight:800;margin:0 0 12px;line-height:1.15;letter-spacing:-.02em}.layout-title .slide-subtitle{font-size:clamp(14px,3vw,20px);font-weight:500;opacity:.8}.layout-content h2,.layout-two-column h2,.layout-quote h2{font-size:clamp(18px,4vw,32px);font-weight:700;margin:0 0 12px;letter-spacing:-.01em}.slide-subtitle{margin:0 0 12px;opacity:.8;font-weight:500;font-size:clamp(13px,2.5vw,18px)}.slide-bullets{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.slide-bullets li,.slide-col li{display:flex;align-items:flex-start;gap:10px;font-size:clamp(13px,2.5vw,20px);line-height:1.4;font-weight:500}.slide-bullet-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;margin-top:6px}.slide-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}.slide-col{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.layout-quote{text-align:center;align-items:center}.slide-quote-mark{font-size:clamp(40px,8vw,72px);line-height:1;margin-bottom:8px;opacity:.8}.slide-quote-text{border-left:4px solid;padding:8px 16px 8px 24px;margin:12px 0 0;text-align:left;font-style:italic}.slide-quote-text p{margin:8px 0;font-size:clamp(14px,3vw,22px);line-height:1.5;font-weight:500}@keyframes slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.slideshow-presentation{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;cursor:pointer}.presentation-slide{width:90vw;max-width:1000px;aspect-ratio:16/9;border-radius:20px;box-shadow:0 32px 80px #00000080;display:flex;align-items:center;justify-content:center;padding:48px;animation:slideIn .4s cubic-bezier(.16,1,.3,1)}.pres-slide-content h1{font-size:clamp(24px,5vw,56px)}.pres-slide-content h2{font-size:clamp(20px,4vw,40px)}.pres-slide-content .slide-subtitle{font-size:clamp(14px,2.5vw,24px)}.pres-slide-content .slide-bullets li,.pres-slide-content .slide-col li{font-size:clamp(14px,2.5vw,22px);padding:6px 0}.pres-slide-content .slide-bullet-dot{width:10px;height:10px;margin-top:7px}.pres-slide-content .slide-quote-mark{font-size:clamp(36px,8vw,72px)}.pres-slide-content .slide-quote-text p{font-size:clamp(16px,3vw,24px)}@keyframes slideIn{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.presentation-controls{position:fixed;top:16px;right:16px;display:flex;align-items:center;gap:12px;z-index:10}.presentation-counter{font-size:14px;opacity:.6;background:#0006;padding:6px 14px;border-radius:10px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.presentation-exit{width:36px;height:36px;border-radius:50%;border:none;background:#ffffff26;color:#fff;font-size:16px;display:grid;place-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .15s}.presentation-exit:active{background:#ffffff4d}.presentation-nav{position:fixed;bottom:24px;left:50%;transform:translate(-50%);display:flex;gap:12px;z-index:10}.pres-nav-btn{width:44px;height:44px;border-radius:50%;border:none;background:#ffffff26;color:#fff;font-size:18px;display:grid;place-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .15s,transform .15s}.pres-nav-btn:active{transform:scale(.9);background:#ffffff4d}.pres-nav-btn:disabled{opacity:.3}@media(max-width:768px){.web-results-container{width:100%;max-width:100vw;box-sizing:border-box;padding-right:8px}.web-result-card{padding:8px 10px;height:auto;min-height:44px}.web-result-icon{width:28px;height:28px;font-size:14px}.web-result-title{font-size:13px;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.web-result-url{font-size:11px}.se-sidebar{width:100%;height:80px;min-height:80px;border-right:none;border-bottom:1px solid rgba(255,255,255,.08);flex-direction:row;background:#0003;z-index:5}.se-slides-list{flex-direction:row;overflow-x:auto;overflow-y:hidden;padding:8px 12px;gap:8px;align-items:center;scrollbar-width:none}.se-slides-list::-webkit-scrollbar{display:none}.se-thumbnail{min-width:90px;height:60px;padding:6px 8px;justify-content:space-between}.se-add-slide-btn{min-width:90px;height:60px;margin:0;white-space:wrap;padding:6px;display:grid;place-items:center;text-align:center}.se-main{flex:1;display:flex;flex-direction:column;height:calc(100% - 80px)}.se-preview-canvas{flex:1;padding:12px;min-height:200px;display:flex;align-items:center;justify-content:center}.se-slide-frame{width:100%;max-width:100%;max-height:100%;aspect-ratio:16/10;padding:16px;border-radius:12px}.se-editor-panel{flex-shrink:0;max-height:45vh;min-height:30vh;padding:16px;border-top:1px solid rgba(255,255,255,.1);background:#0f172af2;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:20px 20px 0 0;box-shadow:0 -4px 24px #0000004d;padding-bottom:env(safe-area-inset-bottom,20px)}.se-layout-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.se-layout-row::-webkit-scrollbar{display:none}.se-layout-btn{flex-shrink:0;padding:6px 12px}.presentation-slide{width:100vw;height:100dvh;max-width:100%;aspect-ratio:auto;border-radius:0;padding:24px;box-sizing:border-box;display:flex;flex-direction:column;justify-content:center}.pres-slide-content h1{font-size:clamp(24px,8vw,40px);margin-bottom:16px}.pres-slide-content h2{font-size:clamp(20px,6vw,32px);margin-bottom:16px}.pres-slide-content .slide-subtitle{font-size:clamp(16px,4vw,24px);margin-bottom:16px}.pres-slide-content .slide-bullets li,.pres-slide-content .slide-col li{font-size:clamp(15px,4.5vw,24px);padding:8px 0;line-height:1.5}.slide-columns{grid-template-columns:1fr;gap:12px}.presentation-controls{top:max(16px,env(safe-area-inset-top));right:16px}.presentation-nav{bottom:max(24px,env(safe-area-inset-bottom));width:100%;justify-content:space-between;padding:0 24px;box-sizing:border-box}.pres-nav-btn{width:48px;height:48px;font-size:20px;background:#0006}}
