@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;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);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}.cr{--cr-bg: #0e1522;--cr-panel: #161e2e;--cr-line: #263043;--cr-txt: #e6edf7;--cr-accent: #4f9dff;--cr-run: #2ea043;margin:14px 0;border-radius:14px;overflow:hidden;background:var(--cr-bg);border:1px solid var(--cr-line);box-shadow:0 10px 30px #00000047;font-family:inherit}.cr-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 10px;background:linear-gradient(180deg,#1b2536,#141b29);border-bottom:1px solid var(--cr-line);flex-wrap:wrap}.cr-toolbar-left{display:flex;align-items:center;gap:8px;min-width:0}.cr-toolbar-right{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.cr-lang{color:var(--cr-txt);font-weight:700;font-size:13px;white-space:nowrap}.cr-select{background:#0c1220;color:var(--cr-txt);border:1px solid var(--cr-line);border-radius:7px;padding:3px 6px;font-size:12.5px}.cr-btn{border:1px solid var(--cr-line);background:#1e2838;color:var(--cr-txt);border-radius:8px;padding:5px 11px;font-size:12.5px;cursor:pointer;font-family:inherit;white-space:nowrap;transition:filter .12s,background .12s}.cr-btn:hover{filter:brightness(1.15)}.cr-btn.ghost{background:transparent;color:#a9b6c9}.cr-btn.ghost.on{background:#223049;color:var(--cr-txt)}.cr-btn.run{background:var(--cr-run);border-color:transparent;color:#fff;font-weight:700}.cr-btn.run:disabled{opacity:.6;cursor:default}.cr-btn.submit{background:var(--cr-accent);border-color:transparent;color:#fff;font-weight:700;padding:8px 22px}.cr-editor{background:#0d1117}.cr-editor .cm-host{direction:ltr}.cr-editor .cm-editor{background:#0d1117}.cr-editor .cm-editor.cm-focused{outline:none}.cr-stdin{padding:8px 10px;background:var(--cr-panel);border-top:1px solid var(--cr-line)}.cr-stdin label{display:block;color:#9fb0c6;font-size:12px;margin-bottom:4px}.cr-stdin textarea{width:100%;background:#0c1220;color:var(--cr-txt);border:1px solid var(--cr-line);border-radius:8px;padding:6px 8px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;resize:vertical}.cr-monitor{padding:12px;background:linear-gradient(180deg,#10182600,#0a0f1a)}.cr-bezel{background:#05070c;border:1px solid #223049;border-radius:12px;overflow:hidden;box-shadow:inset 0 0 0 3px #0b1220,0 6px 18px #00000059}.cr-titlebar{display:flex;align-items:center;gap:6px;padding:7px 12px;background:#0c1626;border-bottom:1px solid #1a2740}.cr-titlebar .dot{width:11px;height:11px;border-radius:50%;display:inline-block}.cr-titlebar .dot.r{background:#ff5f56}.cr-titlebar .dot.y{background:#ffbd2e}.cr-titlebar .dot.g{background:#27c93f}.cr-titlebar-txt{margin-inline-start:8px;color:#6f8199;font-size:11.5px;letter-spacing:.3px;direction:ltr}.cr-screen{background:#fff;min-height:120px;position:relative}.cr-frame{display:block;width:100%;height:320px;border:0;background:#fff}.cr-frame.hidden-frame{height:0}.compact .cr-frame{height:240px}.cr-console{background:#0a0f1a;color:#d6e2f2;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;max-height:180px;overflow:auto;padding:6px 10px;direction:ltr;text-align:left}.cr-con-empty{color:#5a6a80;font-style:italic}.cr-con-line{padding:1px 0;white-space:pre-wrap;word-break:break-word;border-bottom:1px solid #121b2b}.cr-con-line.warn{color:#ffcf6b}.cr-con-line.error{color:#ff8a8a}.cr-con-line.debug{color:#9aa7bd}.cr-term{margin:0;background:#05070c;color:#d6f2dd;padding:12px 14px;min-height:120px;max-height:340px;overflow:auto;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.5;white-space:pre-wrap;word-break:break-word;direction:ltr;text-align:left}.cr-term-idle{color:#5a6a80}.cr-term-err{color:#ff9d9d}.cr-term-note{color:#ffcf6b}.cr-explain{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;background:#12203a;border-top:1px solid var(--cr-line);color:#dbe6f5}.cr-explain-ico{font-size:18px}.cr-explain-txt{font-size:13.5px;line-height:1.85}.cr-explain-txt p{margin:0 0 4px}.cr-submit{padding:12px;display:flex;justify-content:flex-end;background:#0c1220;border-top:1px solid var(--cr-line)}@media (max-width: 640px){.cr-frame{height:240px}.cr-lang{font-size:12px}.cr-btn{padding:5px 8px;font-size:12px}}.fl-codex{margin:14px 0;border:1px solid var(--border, #2b3550);border-radius:14px;overflow:hidden;background:var(--codex-bg, #0f1728)}.fl-codex-task{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;background:linear-gradient(180deg,#1a2440,#141d33);color:#e6edf7}.fl-codex-ico{font-size:20px}.fl-codex-task b{display:block;font-size:14px;margin-bottom:3px}.fl-codex-task p{margin:0;font-size:13.5px;line-height:1.8;color:#c7d3e6}.fl-codex .cr{margin:0;border-radius:0;border-left:0;border-right:0}.fl-codex-fb{display:flex;gap:9px;align-items:flex-start;padding:11px 14px;font-size:13.5px;line-height:1.8}.fl-codex-fb.ok{background:#10331f;color:#b9f6ca}.fl-codex-fb.no{background:#3a1520;color:#ffc9d1}.fl-codex-fb-ico{font-size:16px}.fl-codex-actions{padding:12px 14px;display:flex;justify-content:flex-end;background:#0c1220}.fl-codex-actions .ghost-continue{background:transparent}@font-face{font-family:IRANSans;src:url(/assets/IRANSansWeb-BIlCKSwe.woff2) format("woff2");font-weight:400;font-display:swap}:root{--accent: #f59e0b;--accent-2: #ef4444;--radius: 14px;--font: "IRANSans", "Segoe UI", Tahoma, sans-serif}[data-theme=dark]{--bg: #0f1117;--bg-2: #161a23;--bg-3: #1e2430;--text: #e8eaf0;--text-muted: #8b93a5;--border: #2a3140;--shadow: 0 8px 30px rgba(0, 0, 0, .45);--accent-soft: rgba(245, 158, 11, .14)}[data-theme=light]{--bg: #f4f6fb;--bg-2: #ffffff;--bg-3: #eef1f7;--text: #1c2333;--text-muted: #69718a;--border: #dfe4ee;--shadow: 0 8px 30px rgba(28, 35, 51, .1);--accent-soft: rgba(245, 158, 11, .16)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text);transition:background .25s,color .25s;-webkit-font-smoothing:antialiased}button,input,select{font-family:var(--font)}.splash{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px}.splash-logo,.brand-logo,.login-logo{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 6px 18px #ef444459}.spinner{width:26px;height:26px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-page{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(700px 400px at 85% -10%,var(--accent-soft),transparent),radial-gradient(600px 380px at -10% 110%,rgba(239,68,68,.1),transparent),var(--bg)}.login-theme-toggle{position:fixed;top:18px;left:18px}.login-card{width:100%;max-width:400px;background:var(--bg-2);border:1px solid var(--border);border-radius:22px;padding:36px 30px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;animation:rise .4s ease}@keyframes rise{0%{opacity:0;transform:translateY(14px)}}.login-logo{width:68px;height:68px;font-size:24px;margin-bottom:18px}.login-title{font-size:21px;margin-bottom:6px}.login-sub{color:var(--text-muted);font-size:13px;margin-bottom:26px}.login-form{width:100%;display:flex;flex-direction:column;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field label{font-size:13px;color:var(--text-muted)}.field input,.field select{background:var(--bg-3);border:1px solid var(--border);border-radius:11px;padding:11px 14px;font-size:14px;color:var(--text);outline:none;transition:border .2s,box-shadow .2s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.alert{background:#ef44441f;border:1px solid rgba(239,68,68,.35);color:#ef6b6b;border-radius:10px;padding:10px 14px;font-size:13px;margin-top:10px}.alert.warn{background:#f59e0b1f;border-color:#f59e0b66;color:#d89211;line-height:1.9}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--border);background:var(--bg-3);color:var(--text);border-radius:11px;padding:10px 18px;font-size:14px;cursor:pointer;transition:transform .15s,box-shadow .2s,opacity .2s}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.6;cursor:default}.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff;box-shadow:0 5px 16px #ef44444d}.btn.block{width:100%;padding:12px;margin-top:6px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;border:1px solid var(--border);background:var(--bg-2);color:var(--text-muted);cursor:pointer;transition:color .2s,border .2s,background .2s}.icon-btn:hover{color:var(--accent);border-color:var(--accent)}.icon-btn.danger:hover{color:#ef4444;border-color:#ef4444}.layout{display:flex;height:100%}.sidebar{width:260px;flex-shrink:0;background:var(--bg-2);border-inline-end:1px solid var(--border);display:flex;flex-direction:column;padding:18px 14px;transition:transform .25s ease}.sidebar-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;padding:0 6px}.brand{display:flex;align-items:center;gap:12px}.brand-logo{width:44px;height:44px;font-size:16px;border-radius:13px}.brand-title{font-size:15px;font-weight:700}.brand-sub{font-size:11px;color:var(--text-muted)}.nav{display:flex;flex-direction:column;gap:4px;flex:1}.nav-item{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;color:var(--text-muted);text-decoration:none;font-size:14px;transition:background .2s,color .2s}.nav-item:hover{background:var(--bg-3);color:var(--text)}.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.sidebar-foot{display:flex;align-items:center;gap:8px;padding-top:14px;border-top:1px solid var(--border)}.user-chip{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.user-chip-info{min-width:0}.user-chip-name{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip-role{font-size:11px;color:var(--text-muted)}.avatar{width:38px;height:38px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2))}.avatar.xl{width:76px;height:76px;font-size:28px}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:14px;padding:14px 22px;border-bottom:1px solid var(--border);background:var(--bg-2);position:sticky;top:0;z-index:5}.page-title{font-size:17px;flex:1}.content{flex:1;overflow-y:auto;padding:22px}.card{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.card-head h2{font-size:16px}.empty-section{max-width:430px;margin:9vh auto 0;text-align:center;background:var(--bg-2);border:1px dashed var(--border);border-radius:20px;padding:44px 30px;animation:rise .35s ease}.empty-icon{width:76px;height:76px;margin:0 auto 18px;border-radius:22px;display:flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent)}.empty-section h2{margin-bottom:8px}.empty-section p{color:var(--text-muted);font-size:13.5px;line-height:2;margin-bottom:16px}.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12px;background:var(--accent-soft);color:var(--accent)}.badge.role-admin{background:#ef444424;color:#ef4444}.badge.role-support{background:#3b82f624;color:#3b82f6}.badge.role-student{background:#22c55e24;color:#22c55e}.profile-page{max-width:560px;margin:0 auto}.profile-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:34px 26px}.profile-rows{width:100%;margin-top:18px;display:flex;flex-direction:column}.profile-row{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:13px 4px;border-top:1px solid var(--border);font-size:14px}.muted{color:var(--text-muted)}.perm-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}.tag{display:inline-flex;align-items:center;gap:5px;background:var(--bg-3);border:1px solid var(--border);border-radius:8px;padding:3px 9px;font-size:11.5px;color:var(--text-muted)}.tag.small{margin-inline-start:7px;color:var(--accent);border-color:var(--accent)}.table-wrap{overflow-x:auto}.table{width:100%;border-collapse:collapse;font-size:13.5px}.table th{text-align:right;color:var(--text-muted);font-size:12px;font-weight:400;padding:9px 12px;border-bottom:1px solid var(--border);white-space:nowrap}.table td{padding:11px 12px;border-bottom:1px solid var(--border);vertical-align:middle}.table tr:last-child td{border-bottom:none}.table .perm-tags{justify-content:flex-start}.row-actions{display:flex;gap:6px;justify-content:flex-end}.row-actions .icon-btn{width:32px;height:32px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#080a1099;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:18px;z-index:50}.modal{width:100%;max-width:520px;max-height:92vh;overflow-y:auto;background:var(--bg-2);border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow);animation:rise .25s ease}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.modal-head h3{font-size:16px}.modal form{display:flex;flex-direction:column;gap:16px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.segmented{display:flex;background:var(--bg-3);border:1px solid var(--border);border-radius:11px;padding:4px;gap:4px}.segmented button{flex:1;border:none;background:transparent;color:var(--text-muted);padding:8px;border-radius:8px;font-size:13px;cursor:pointer;transition:background .2s,color .2s}.segmented button.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}.segmented.type-seg{flex-wrap:wrap}.segmented.type-seg button{flex:1 0 auto;min-width:74px}.perm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.check{display:flex;align-items:center;gap:8px;background:var(--bg-3);border:1px solid var(--border);border-radius:10px;padding:9px 11px;font-size:13px;cursor:pointer;-webkit-user-select:none;user-select:none}.check input{accent-color:var(--accent);width:16px;height:16px}.modal-actions{display:flex;justify-content:flex-end;gap:9px}.center{display:flex;align-items:center;justify-content:center}.pad{padding:30px}.backdrop{display:none}.mobile-only{display:none!important}.vocab-page.narrow{max-width:640px;margin:0 auto}.vocab-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:20px}.vocab-head h2{font-size:18px}.vocab-head-title{display:flex;align-items:center;gap:12px}.small{font-size:12px}.gender-der{color:#3b82f6}.gender-die{color:#ec4899}.gender-das{color:#22c55e}.series-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.series-card{background:var(--bg-2);border:1px solid var(--border);border-radius:18px;padding:18px;cursor:pointer;transition:transform .18s,border .2s,box-shadow .25s;animation:rise .4s ease backwards}.series-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 10px 26px var(--accent-soft)}.series-card-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.series-icon,.action-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent);flex-shrink:0}.series-card h3{font-size:15px;margin-bottom:10px}.series-meta{display:flex;gap:6px;flex-wrap:wrap}.tag.starred{color:#eab308;border-color:#eab30866}.icon-btn.starred{color:#eab308;border-color:#eab30880}.icon-btn.ghost{border-color:transparent;background:transparent}.icon-btn.mini{width:24px;height:24px;border:none;background:transparent;vertical-align:middle;margin-inline-start:4px}.action-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}.action-card{background:var(--bg-2);border:1px solid var(--border);border-radius:18px;padding:22px 18px;cursor:pointer;transition:transform .18s,border .2s,box-shadow .25s;animation:rise .4s ease backwards}.action-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 10px 26px var(--accent-soft)}.action-card h3{font-size:15px;margin:14px 0 6px}.action-card p{font-size:12.5px;color:var(--text-muted);line-height:1.9}.word-form{display:flex;flex-direction:column;gap:16px}.input-with-btn{display:flex;gap:8px;align-items:center}.input-with-btn input{flex:1;min-width:0}.ai-btn{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.segmented .seg-der.active{background:#3b82f6}.segmented .seg-die.active{background:#ec4899}.segmented .seg-das.active{background:#22c55e}.toast{position:fixed;bottom:26px;inset-inline-start:50%;transform:translate(50%);background:var(--bg-2);border:1px solid var(--accent);color:var(--text);border-radius:12px;padding:11px 20px;font-size:13.5px;box-shadow:var(--shadow);z-index:80;animation:rise .25s ease}.setup-options{display:flex;flex-direction:column;gap:12px}.setup-option{display:flex;align-items:center;gap:16px;text-align:start;background:var(--bg-2);border:1px solid var(--border);border-radius:16px;padding:16px 18px;color:var(--text);cursor:pointer;transition:transform .18s,border .2s;animation:rise .35s ease backwards}.setup-option>div:nth-child(2){flex:1}.setup-option:hover:not(:disabled){transform:translateY(-2px);border-color:var(--accent)}.setup-option:disabled{opacity:.45;cursor:default}.setup-option h3{font-size:15px;margin-bottom:4px}.review-page{max-width:560px;margin:0 auto;display:flex;flex-direction:column;min-height:100%}.review-top{display:flex;align-items:center;gap:14px;margin-bottom:26px}.review-progress{flex:1}.review-counter{display:block;font-size:13px;font-weight:700;text-align:center;margin-bottom:7px}.progress-bar{height:6px;background:var(--bg-3);border-radius:99px;overflow:hidden}.progress-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .35s ease}.seek-hit{padding:11px 0;margin:-8px 0;cursor:pointer;touch-action:none}.progress-bar.seekable{position:relative;overflow:visible}.progress-thumb{position:absolute;top:50%;width:18px;height:18px;border-radius:50%;background:var(--accent-2, var(--accent, #6c8cff));border:2px solid var(--bg-1, #0f1117);box-shadow:0 1px 5px #00000073;transform:translateY(-50%);transition:right .35s ease;pointer-events:none}.seek-hit.seeking .progress-fill,.seek-hit.seeking .progress-thumb{transition:none}.seek-hit.seeking .progress-thumb{transform:translateY(-50%) scale(1.25)}.review-controls.hard-row{margin-top:12px}.hard-btn{border:1px solid var(--border, #2a2f3a)}.hard-btn.on{background:#e0673a29;border-color:#e0673a;color:#ff8a5c}.hard-count{align-self:center}.hard-flag{color:#ff8a5c;font-weight:700}.flash-stage{perspective:1200px;transition:transform .18s ease,opacity .18s ease}.flash-stage.slide-next{transform:translate(-34px);opacity:0}.flash-stage.slide-prev{transform:translate(34px);opacity:0}.flash-card{position:relative;height:320px;cursor:pointer;-webkit-tap-highlight-color:transparent}.flash-inner{position:absolute;top:0;right:0;bottom:0;left:0;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.4,.1,.2,1)}.flash-card.flipped .flash-inner{transform:rotateY(180deg)}.flash-card.flip-instant .flash-inner{transition:none}.flash-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:var(--bg-2);border:1px solid var(--border);border-radius:24px;padding:28px;box-shadow:var(--shadow);background-image:radial-gradient(420px 220px at 80% -20%,var(--accent-soft),transparent)}.flash-face.back{transform:rotateY(180deg)}.flash-word{font-size:32px;font-weight:700;text-align:center;line-height:1.6;word-break:break-word}.flash-speak{width:44px;height:44px;border-radius:50%}.flash-star{position:absolute;top:14px;inset-inline-end:14px;z-index:3}.flash-details{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;background:var(--bg-2);border:1px solid var(--accent);border-radius:24px;padding:20px 22px;overflow-y:auto;animation:rise .22s ease}.detail-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--border);font-size:14px}.detail-example{padding-top:12px;font-size:13.5px;line-height:2}.detail-example p[dir=ltr]{text-align:left}.review-hint{text-align:center;margin:16px 0 20px}.review-controls{display:flex;align-items:center;justify-content:center;gap:16px}.review-controls.center{flex-wrap:wrap;margin-top:14px}.vocab-head-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.auto-setup .field{margin-top:14px}.auto-speed{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.auto-speed input[type=number]{width:90px;text-align:center;font-size:16px}.auto-speed-quick{display:flex;gap:8px}.auto-speed-quick .level-btn{min-width:46px}.auto-review .flash-card{cursor:default}.auto-done{text-align:center;margin-top:16px}.icon-btn.big{width:50px;height:50px;border-radius:14px}.icon-btn:disabled{opacity:.35;cursor:default}.review-learned{display:flex;justify-content:center;margin-top:16px}.learned-toggle{display:inline-flex;align-items:center;gap:8px;min-width:200px;justify-content:center;border:1px solid #16a34a;color:#16a34a;background:#16a34a1a}.learned-toggle.on{border-color:#dc2626;color:#dc2626;background:#dc26261a}.narrow-card{max-width:640px;margin:0 auto}.bulk-textarea{width:100%;background:var(--bg-3);border:1px solid var(--border);border-radius:11px;padding:12px 14px;font-size:14px;font-family:var(--font);color:var(--text);outline:none;resize:vertical;line-height:1.9}.bulk-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.bulk-progress{display:flex;flex-direction:column;gap:6px;margin-top:12px}.bulk-progress .muted{text-align:center}.bulk-list{display:flex;flex-direction:column;gap:12px}.bulk-item{padding:16px 18px}.bulk-item-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}.type-select,.article-select{background:var(--bg-3);border:1px solid var(--border);border-radius:9px;padding:7px 10px;font-size:13px;color:var(--text);outline:none}.bulk-item-head .icon-btn{margin-inline-start:auto;width:32px;height:32px}.bulk-extra{margin-top:8px;text-align:left}.td-german{text-align:left;font-weight:700}.td-clip{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.row-star{color:#eab308;margin-inline-start:6px;vertical-align:middle}.sheet-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#080a108c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:flex-end;justify-content:center}.action-sheet{width:100%;max-width:460px;background:var(--bg-2);border:1px solid var(--border);border-bottom:none;border-radius:22px 22px 0 0;padding:10px 16px calc(16px + env(safe-area-inset-bottom));box-shadow:var(--shadow);animation:sheet-up .25s ease}@keyframes sheet-up{0%{transform:translateY(60px);opacity:0}}.sheet-handle{width:42px;height:4px;border-radius:99px;background:var(--border);margin:4px auto 12px}.sheet-word{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:2px 6px 12px;border-bottom:1px solid var(--border);margin-bottom:8px}.sheet-german{font-size:17px;font-weight:700}.sheet-word .small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sheet-actions{display:flex;flex-direction:column}.sheet-actions button{display:flex;align-items:center;gap:13px;width:100%;border:none;background:transparent;color:var(--text);font-size:14.5px;padding:12px 8px;border-radius:12px;cursor:pointer;text-align:start;font-family:var(--font)}.sheet-actions button:hover{background:var(--bg-3)}.sheet-actions .sheet-danger{color:#ef4444}.sheet-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--bg-3);color:var(--text-muted);flex-shrink:0}.sheet-icon.starred{color:#eab308}.sheet-icon.danger{color:#ef4444}.sheet-cancel{margin-top:8px}.conj-block{border:1px solid var(--border);border-radius:12px;margin-top:10px;overflow:hidden}.conj-head{display:flex;align-items:center;gap:10px;width:100%;border:none;background:var(--bg-3);color:var(--text);padding:10px 13px;font-size:13.5px;cursor:pointer;font-family:var(--font)}.conj-label{font-weight:700;color:var(--accent)}.conj-summary{flex:1;text-align:left;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conj-chevron{display:flex;transition:transform .2s;color:var(--text-muted)}.conj-chevron.open{transform:rotate(180deg)}.conj-table{padding:6px 13px 10px;animation:rise .18s ease}.conj-row{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px dashed var(--border);font-size:13.5px}.conj-row:last-child{border-bottom:none}.conj-pronoun{color:var(--text-muted)}.conj-form{font-weight:700}.conj-inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.conj-input span{display:block;font-size:11px;color:var(--text-muted);margin-bottom:4px;text-align:left}.conj-input input{width:100%;background:var(--bg-3);border:1px solid var(--border);border-radius:9px;padding:8px 10px;font-size:13px;color:var(--text);outline:none}.conj-input input:focus{border-color:var(--accent)}@media (max-width: 860px){.mobile-only{display:inline-flex!important}.sidebar{position:fixed;inset-block:0;inset-inline-start:0;z-index:60;transform:translate(100%);box-shadow:var(--shadow)}[dir=ltr] .sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#080a1080;z-index:55}.content{padding:16px}.form-grid{grid-template-columns:1fr}.perm-grid{grid-template-columns:repeat(2,1fr)}.flash-card{height:280px}.flash-word{font-size:26px}}.field textarea{background:var(--bg-3);border:1px solid var(--border);border-radius:11px;padding:11px 14px;font-size:14px;color:var(--text);outline:none;resize:vertical;line-height:1.9;transition:border .2s,box-shadow .2s}.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.lesson-content-input{min-height:300px;font-size:13.5px}.content-hint{line-height:2;background:var(--bg-3);border-radius:10px;padding:10px 12px}.content-hint b{color:var(--accent)}.lesson-level{display:inline-flex;align-items:center;justify-content:center;min-width:52px;padding:8px 10px;border-radius:12px;font-weight:700;font-size:14px;color:#fff;flex-shrink:0}.lesson-level.inline{min-width:0;padding:3px 9px;font-size:12px;border-radius:8px;vertical-align:middle}.lesson-level.big{font-size:18px;padding:12px 16px}.lvl-a{background:linear-gradient(135deg,#22c55e,#16a34a)}.lvl-b{background:linear-gradient(135deg,#f59e0b,#ea8a0b)}.lvl-c{background:linear-gradient(135deg,#ef4444,#b91c1c)}.level-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.chip{border:1px solid var(--border);background:var(--bg-2);color:var(--text-muted);border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer;transition:all .2s}.chip.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.lesson-list{display:flex;flex-direction:column;gap:12px}.lesson-card{display:flex;align-items:center;gap:14px;cursor:pointer;animation:rise .4s ease both;transition:transform .15s,box-shadow .2s}.lesson-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.lesson-info{flex:1;min-width:0}.lesson-info h3{font-size:15px;margin-bottom:4px}.lesson-goal{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:6px}.lesson-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.lesson-meta .tag{display:inline-flex;align-items:center;gap:4px}.done-tag{color:#22c55e;border-color:#22c55e66;background:#22c55e1f}.active-tag{color:var(--accent);border-color:#f59e0b66;background:var(--accent-soft)}.share-tag{color:#3b82f6;border-color:#3b82f666;background:#3b82f61f}.level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:8px}.level-btn{border:1px solid var(--border);background:var(--bg-3);color:var(--text-muted);border-radius:11px;padding:10px 4px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s}.level-btn.active.lvl-a{border-color:#22c55e;color:#22c55e;background:#22c55e21}.level-btn.active.lvl-b{border-color:#f59e0b;color:#f59e0b;background:#f59e0b21}.level-btn.active.lvl-c{border-color:#ef4444;color:#ef4444;background:#ef444421}.share-modes{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.share-mode{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:11px;padding:11px 14px;font-size:14px;cursor:pointer;transition:all .2s}.share-mode.active{border-color:var(--accent);background:var(--accent-soft)}.share-mode input{accent-color:var(--accent)}.share-users{max-height:220px;overflow-y:auto;display:flex;flex-direction:column;gap:4px;border:1px solid var(--border);border-radius:11px;padding:8px}.share-user{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;font-size:14px;cursor:pointer}.share-user:hover{background:var(--bg-3)}.share-user input{accent-color:var(--accent)}.lesson-play{display:flex;flex-direction:column;height:100%;min-height:0;max-width:760px;margin:0 auto}.lesson-play-head h2{font-size:16px}.lesson-progress{height:5px;border-radius:999px;background:var(--bg-3);overflow:hidden;margin-bottom:12px;flex-shrink:0}.lesson-progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .5s ease}.lesson-intro{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:36px 24px}.lesson-intro h3{font-size:18px}.lesson-intro-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:6px}.lesson-feed{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:6px 2px 16px}.lesson-feed>*{flex-shrink:0}.fl-line,.fl-head,.fl-table,.fl-q,.fl-u,.fl-hr,.fl-quote,.fl-code{animation:fl-in .45s ease both}@keyframes fl-in{0%{opacity:0;transform:translateY(10px)}}.fl-line.old,.fl-head.old,.fl-table.old,.fl-q.old,.fl-u.old,.fl-hr.old,.fl-quote.old,.fl-code.old{animation:none;opacity:.75}.fl-line{background:var(--bg-2);border:1px solid var(--border);border-radius:16px;border-start-start-radius:4px;padding:12px 16px;font-size:14.5px;line-height:2;max-width:92%;align-self:flex-start}.fl-head{font-size:16px;color:var(--accent);margin-top:10px}.fl-table{overflow-x:auto;border:1px solid var(--border);border-radius:14px;background:var(--bg-2)}.fl-table table{width:100%;border-collapse:collapse;font-size:13.5px}.fl-table td,.fl-table th{padding:9px 13px;border-bottom:1px solid var(--border);line-height:1.8;text-align:start}.fl-table th,.fl-table table:not(.has-head) tr:first-child td{color:var(--accent);font-weight:700;background:var(--bg-3)}.fl-table tbody tr:last-child td{border-bottom:none}.fl-q{display:flex;gap:10px;align-items:flex-start;background:var(--accent-soft);border:1px solid rgba(245,158,11,.45);border-radius:16px;padding:13px 16px;font-size:14.5px;line-height:2;max-width:94%}.fl-q-icon{color:var(--accent);flex-shrink:0;margin-top:3px}.fl-u{display:inline-flex;align-items:center;gap:8px;align-self:center;background:var(--bg-3);border:1px dashed var(--border);color:var(--text-muted);border-radius:999px;padding:8px 16px;font-size:13px}.fl-student{align-self:flex-end;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-radius:16px;border-start-end-radius:4px;padding:11px 15px;font-size:14px;line-height:1.9;max-width:85%;animation:fl-in .3s ease both}.fl-ai{align-self:flex-start;background:var(--bg-2);border:1px solid var(--border);border-inline-start:3px solid var(--accent);border-radius:16px;border-start-start-radius:4px;padding:12px 15px;font-size:14px;line-height:2;max-width:92%;animation:fl-in .3s ease both;white-space:pre-wrap}.fl-ai.correct{border-inline-start-color:#22c55e;background:#22c55e17}.fl-ai.wrong{border-inline-start-color:#ef4444}.fl-ai .strong-tag{display:inline-flex;margin-top:8px;color:#a78bfa;border-color:#a78bfa73;background:#a78bfa1f}.fl-ai.typing{display:inline-flex;gap:5px;padding:14px 18px}.fl-ai.typing .dot{width:7px;height:7px;border-radius:50%;background:var(--text-muted);animation:typing-dot 1.1s infinite}.fl-ai.typing .dot:nth-child(2){animation-delay:.18s}.fl-ai.typing .dot:nth-child(3){animation-delay:.36s}@keyframes typing-dot{0%,60%,to{transform:translateY(0);opacity:.5}30%{transform:translateY(-5px);opacity:1}}.skip-hint{text-align:center;opacity:.7}.fl-done{display:flex;flex-direction:column;align-items:center;gap:12px;padding:26px 16px;text-align:center;animation:fl-in .5s ease both}.fl-done-icon{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#22c55e,#16a34a);box-shadow:0 8px 24px #22c55e59}.lesson-bar{flex-shrink:0;display:flex;flex-direction:column;gap:10px;padding-top:10px;border-top:1px solid var(--border)}.lesson-choices{display:flex;flex-wrap:wrap;gap:9px;justify-content:center}.btn.choice{border-radius:999px;padding:9px 18px;font-size:13.5px}.btn.choice.ok{border-color:#22c55e80;color:#22c55e;background:#22c55e1a}.lesson-input{display:flex;align-items:center;gap:8px;background:var(--bg-2);border:1px solid var(--border);border-radius:999px;padding:6px 8px 6px 14px;transition:border .2s,box-shadow .2s,opacity .2s}.lesson-input:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.lesson-input.disabled{opacity:.55}.lesson-input input{flex:1;border:none;background:none;outline:none;color:var(--text);font-size:14px;padding:8px 6px;min-width:0}.send-btn{border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff}.send-btn:disabled{opacity:.45}@media (max-width: 640px){.fl-line,.fl-ai,.fl-q{max-width:100%}}.fl-block{background:var(--bg-2);border:1px solid var(--border);border-radius:16px;padding:14px 18px;font-size:14.5px;line-height:2.1}.fl-block p{margin:0}.fl-block p+p{margin-top:8px}.lesson-feed .w{opacity:0;animation:w-in .35s ease forwards}.lesson-feed.anim-paused .w{animation-play-state:paused}@keyframes w-in{0%{opacity:0}to{opacity:1}}.de-bit{unicode-bidi:isolate;font-family:Segoe UI,Tahoma,Arial,sans-serif}.speak-bit{display:inline-flex;align-items:center;justify-content:center;background:none;border:none;color:var(--accent);cursor:pointer;padding:0 3px;vertical-align:-2px;opacity:.8;transition:opacity .2s,transform .15s}.speak-bit:hover{opacity:1;transform:scale(1.15)}.hand-btn{position:absolute;bottom:110px;inset-inline-end:14px;width:52px;height:52px;border-radius:50%;border:1px solid var(--border);background:var(--bg-2);color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow);transition:all .2s;z-index:5}.hand-btn:hover{color:var(--accent);border-color:var(--accent)}.hand-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff;animation:hand-pulse 1.2s infinite}@keyframes hand-pulse{0%,to{box-shadow:0 0 #f59e0b73}50%{box-shadow:0 0 0 12px #f59e0b00}}.mic-btn{border-radius:50%;flex-shrink:0;width:36px;height:36px}.mic-btn.listening{background:linear-gradient(135deg,#ef4444,#b91c1c);border:none;color:#fff;animation:hand-pulse 1.1s infinite}.stt-lang{flex-shrink:0;border:1px solid var(--border);background:var(--bg-3);color:var(--text-muted);border-radius:9px;padding:6px 9px;font-size:11px;font-weight:700;cursor:pointer}.stt-lang:disabled{opacity:.5;cursor:default}.model-tag{display:inline-flex;align-items:center;gap:4px;margin-top:8px;color:#a78bfa;border-color:#a78bfa73;background:#a78bfa1f}.route-tag{margin-top:0;margin-inline-start:6px}.log-totals{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}.log-total-card{display:flex;flex-direction:column;gap:9px;padding:14px 16px}.log-total-card.grand{border-color:var(--accent);background:var(--accent-soft)}.log-total-rows{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--text-muted)}.log-total-rows b{color:var(--text);font-size:15px}.log-table td{white-space:nowrap}.lesson-play{position:relative}.spinner.mini{width:14px;height:14px;border-width:2px}.md-code{background:var(--bg-3);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;direction:ltr;unicode-bidi:isolate}.md-b{color:var(--text)}.fl-head.lv1{font-size:20px}.fl-head.lv3{font-size:14.5px;opacity:.95}.fl-hr{border:0;border-top:1px solid var(--border);margin:6px 2px}.fl-quote{border-inline-start:3px solid var(--accent);background:var(--bg-2);border-radius:10px;padding:10px 14px;margin:0;color:var(--text-muted);font-size:14px;line-height:2;max-width:92%}.fl-quote p{margin:0}.fl-quote p+p{margin-top:6px}.fl-code{background:var(--bg-3);border:1px solid var(--border);border-radius:12px;padding:12px 14px;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.8;text-align:left;margin:0}.content-label-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}.content-label-row label{margin-bottom:0}.seg-tabs{display:flex;gap:4px;background:var(--bg-3);border:1px solid var(--border);border-radius:10px;padding:3px}.seg-tabs button{border:0;background:transparent;color:var(--text-muted);padding:5px 14px;border-radius:8px;font:inherit;font-size:13px;cursor:pointer}.seg-tabs button.active{background:var(--accent);color:#fff}.lesson-preview-box{border:1px solid var(--border);border-radius:14px;background:var(--bg-1, transparent);padding:14px;min-height:240px;max-height:62vh;overflow-y:auto}.lesson-preview{display:flex;flex-direction:column;gap:12px}.lesson-preview .fl-block,.lesson-preview .fl-q,.lesson-preview .fl-quote{max-width:100%}.fl-ai-text .fl-block{background:transparent;border:0;border-radius:0;padding:0;font-size:inherit;line-height:2}.fl-ai-text .fl-table{margin:8px 0}.fl-ai-text .fl-head{font-size:15px;margin-top:6px}.fl-q p{margin:0}.fl-q p+p{margin-top:6px}.mute-btn.muted{color:#ef4444;border-color:#ef444480}.lesson-head-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.pause-btn.paused{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 55%,transparent);background:color-mix(in srgb,var(--accent) 14%,transparent)}.audio-opts{border-top:1px solid var(--border);padding-top:14px;display:flex;flex-direction:column;gap:10px}.build-tag{margin-top:14px;opacity:.45;font-size:11px}.manual-audio-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px}.manual-audio-msg{padding:8px 12px;border-radius:10px;font-size:13px;margin-bottom:10px}.manual-audio-msg.ok{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}.manual-audio-msg.err{background:color-mix(in srgb,#ef4444 16%,transparent);color:#ef4444}.manual-audio-list{display:flex;flex-direction:column;gap:16px}.manual-audio-item{display:flex;flex-direction:column;gap:4px}.manual-audio-bar-top{display:flex;align-items:center;gap:8px;padding:0 2px}.manual-audio-num{flex-shrink:0;min-width:24px;height:24px;padding:0 7px;border-radius:12px;background:var(--bg-3);color:var(--muted);font-size:12px;display:flex;align-items:center;justify-content:center}.manual-audio-state{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;color:var(--accent)}.manual-audio-kind{flex-shrink:0;font-size:11px;padding:1px 8px;border-radius:10px;background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}.manual-audio-item.k-q .manual-audio-feed,.manual-audio-item.k-u .manual-audio-feed{border-inline-start:2px solid color-mix(in srgb,var(--accent) 45%,transparent);padding-inline-start:10px}.manual-audio-actions{margin-inline-start:auto;flex-shrink:0;display:flex;gap:4px;align-items:center}.manual-audio-feed{flex:none;overflow-y:visible;padding:0;gap:8px}.manual-audio-feed .fl-block,.manual-audio-feed .fl-table,.manual-audio-feed .fl-head,.manual-audio-feed .fl-q,.manual-audio-feed .fl-u,.manual-audio-feed .fl-quote,.manual-audio-feed .fl-code{animation:none}.icon-btn.ok{color:var(--accent)}.icon-btn.danger{color:#ef4444}.manual-audio-bar{position:relative;width:64px;height:26px;border-radius:8px;background:var(--bg-3);overflow:hidden;display:flex;align-items:center;justify-content:center}.manual-audio-bar-fill{position:absolute;inset-inline-start:0;top:0;bottom:0;background:color-mix(in srgb,var(--accent) 45%,transparent);transition:width .15s}.manual-audio-bar span{position:relative;font-size:11px;color:var(--text)}.manual-audio-hr{height:1px;background:var(--border);margin:4px 24px}.audio-preview{margin-top:12px;padding:12px;border:1px solid var(--border);border-radius:14px;background:var(--bg-2);display:flex;flex-direction:column;gap:8px}.ap-field-label{margin-top:4px}.ap-select,.ap-snippet,.ap-custom{width:100%;border:1px solid var(--border);background:var(--bg-1);color:var(--text);border-radius:10px;padding:8px 10px;font-size:13.5px;font-family:inherit}.ap-snippet,.ap-custom{resize:vertical;line-height:1.9}.ap-tones{display:flex;flex-wrap:wrap;gap:6px}.ap-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.ap-actions .btn{flex-shrink:0}.btn.small{padding:5px 10px;font-size:12.5px;gap:5px}.quiz-card{border:1px solid var(--border);border-radius:16px;background:var(--bg-2);padding:14px;margin:4px 0 2px;display:flex;flex-direction:column;gap:10px;box-shadow:0 6px 20px #0000000f;animation:quiz-in .25s ease both}@keyframes quiz-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.quiz-card.done.correct{border-color:#22c55e80}.quiz-card.done.wrong{border-color:#ef444480}.quiz-head{display:flex;align-items:center}.quiz-type{font-size:11.5px;font-weight:700;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:3px 10px}.quiz-prompt{font-size:15px;font-weight:600;line-height:1.9}.quiz-opts{display:flex;flex-direction:column;gap:8px}.quiz-opts.tf{flex-direction:row;gap:10px}.quiz-opts.tf .quiz-opt{flex:1;justify-content:center}.quiz-opt{display:flex;align-items:center;gap:10px;text-align:start;width:100%;padding:11px 13px;border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);border-radius:12px;background:var(--bg-3);color:var(--text);font-size:14.5px;font-family:inherit;cursor:pointer;transition:border-color .15s,background .15s,transform .1s}.quiz-opt:not([aria-disabled=true]):hover{border-color:var(--accent);transform:translateY(-1px)}.quiz-opt[aria-disabled=true]{cursor:default}.quiz-opt-mark{flex-shrink:0;width:22px;height:22px;display:grid;place-items:center;border-radius:50%}.quiz-bullet{width:12px;height:12px;border:2px solid var(--text-muted);border-radius:50%;display:block}.quiz-opt-text{flex:1}.quiz-opt.ok{border-color:#22c55e;background:#22c55e21;color:#16a34a}.quiz-opt.ok .quiz-opt-mark{color:#22c55e}.quiz-opt.bad{border-color:#ef4444;background:#ef44441f;color:#ef4444}.quiz-opt.bad .quiz-opt-mark{color:#ef4444}.quiz-opt.dim{opacity:.55}.quiz-match{display:flex;flex-direction:column;gap:8px}.quiz-match-row{display:flex;align-items:center;gap:8px;padding:7px 10px;border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);border-radius:12px;background:var(--bg-3);flex-wrap:wrap}.quiz-match-row.ok{border-color:#22c55e80;background:#22c55e14}.quiz-match-row.bad{border-color:#ef444480;background:#ef444412}.quiz-match-left{font-weight:600;min-width:90px;flex:1}.quiz-match-sel{flex:1;min-width:130px;border:1px solid var(--border);background:var(--bg-2);color:var(--text);border-radius:9px;padding:7px 9px;font-size:13.5px;font-family:inherit}.quiz-match-fix{font-size:12.5px;color:#16a34a;font-weight:600}.quiz-result{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--border);padding-top:10px}.quiz-verdict{display:flex;align-items:center;gap:7px;font-weight:700;font-size:14px}.quiz-verdict.ok{color:#16a34a}.quiz-verdict.bad{color:#ef4444}.quiz-explain{margin:0;font-size:13.5px;line-height:1.9;color:var(--text-muted)}.quiz-continue{align-self:flex-end}.quiz-actions{display:flex;justify-content:flex-end}.quiz-gaps{display:flex;flex-direction:column;gap:14px}.quiz-gap{display:flex;flex-direction:column;gap:9px}.quiz-blank-sentence{font-size:14.5px;line-height:2.2;font-weight:500}.quiz-blank-slot{display:inline-flex;align-items:center;justify-content:center;min-width:52px;padding:1px 10px;margin:0 3px;border-bottom:2px dashed var(--text-muted);border-radius:6px 6px 0 0;font-weight:700;color:var(--text-muted);background:color-mix(in srgb,var(--text) 6%,transparent)}.quiz-blank-slot.filled{color:var(--accent);border-bottom-color:var(--accent);border-bottom-style:solid}.quiz-blank-slot.ok{color:#16a34a;border-bottom:2px solid #22c55e;background:#22c55e1f}.quiz-blank-slot.bad{color:#ef4444;border-bottom:2px solid #ef4444;background:#ef44441f}.quiz-blank-opts{display:flex;flex-wrap:wrap;gap:7px}.quiz-chip{padding:7px 13px;border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);border-radius:999px;background:var(--bg-3);color:var(--text);font-size:14px;font-family:inherit;cursor:pointer;transition:border-color .15s,background .15s,transform .1s}.quiz-chip:not([aria-disabled=true]):hover{border-color:var(--accent);transform:translateY(-1px)}.quiz-chip[aria-disabled=true]{cursor:default}.quiz-chip.sel{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}.quiz-chip.ok{border-color:#22c55e;background:#22c55e24;color:#16a34a;font-weight:700}.quiz-chip.bad{border-color:#ef4444;background:#ef44441f;color:#ef4444}.quiz-chip.dim{opacity:.5}.quiz-hint{margin:-2px 0 2px}.quiz-match-tap{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:start}.quiz-match-col{display:flex;flex-direction:column;gap:8px}.quiz-tap-item{position:relative;display:flex;align-items:center;gap:8px;text-align:start;width:100%;padding:11px 12px;border:1.5px solid color-mix(in srgb,var(--text) 16%,transparent);border-radius:12px;background:var(--bg-3);color:var(--text);font-size:14px;font-family:inherit;cursor:pointer;transition:border-color .15s,background .15s,transform .1s,box-shadow .15s}.quiz-tap-item:hover{transform:translateY(-1px)}.quiz-tap-item.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.quiz-tap-item.linked{border-color:var(--c, var(--accent))}.quiz-tap-item.ok{border-color:#22c55e!important;background:#22c55e1a}.quiz-tap-item.bad{border-color:#ef4444!important;background:#ef444417}.quiz-tap-item.ok>svg{color:#22c55e}.quiz-tap-item.bad>svg{color:#ef4444}.quiz-tap-badge{flex-shrink:0;width:20px;height:20px;display:grid;place-items:center;border-radius:50%;color:#fff;font-size:12px;font-weight:800}.quiz-tap-text{flex:1;min-width:0;word-break:break-word}.quiz-match-answers{display:flex;flex-direction:column;gap:5px;border-top:1px dashed var(--border);padding-top:8px}.quiz-match-answer{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}.quiz-match-answer b{color:var(--text)}.quiz-building-panel{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:6px}.quiz-building-title{font-weight:700;margin:4px 0 0}.quiz-building-panel .lesson-progress{width:100%;max-width:320px}.games-grid{display:flex;flex-direction:column;gap:12px}.game-card{display:flex;align-items:center;gap:14px;width:100%;padding:16px;border:1px solid var(--border);border-radius:18px;background:var(--bg-2);color:var(--text);text-align:start;cursor:pointer;font-family:inherit;transition:transform .15s,border-color .15s,box-shadow .15s}.game-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 10px 26px #0000001a}.game-card-emoji{flex-shrink:0;width:58px;height:58px;display:grid;place-items:center;font-size:32px;border-radius:16px;background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,#3b82f6 18%,transparent))}.game-card-body{flex:1;min-width:0}.game-card-title{font-size:18px;margin:0 0 3px;letter-spacing:1px}.game-card-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:7px}.game-tag{font-size:11px;padding:2px 9px;border-radius:999px;background:var(--bg-3);color:var(--text-muted)}.game-card-play{flex-shrink:0;width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--accent);color:#fff}.ddd-setup-card{display:flex;flex-direction:column;gap:18px}.ddd-series{display:flex;flex-wrap:wrap;gap:8px}.ddd-series-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1.5px solid var(--border);border-radius:999px;background:var(--bg-3);color:var(--text);font-family:inherit;font-size:13.5px;cursor:pointer;transition:border-color .15s,background .15s,transform .1s}.ddd-series-chip:hover{transform:translateY(-1px)}.ddd-series-chip.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}.ddd-series-chip.all{font-weight:700}.ddd-chip-count{font-size:11px;background:color-mix(in srgb,var(--text) 12%,transparent);border-radius:999px;padding:1px 7px}.ddd-diffs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.ddd-diff{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;border:1.5px solid var(--border);border-radius:14px;background:var(--bg-3);color:var(--text);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:border-color .15s,transform .1s,background .15s}.ddd-diff:hover{transform:translateY(-1px)}.ddd-diff.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.ddd-diff-emoji{font-size:22px}.ddd-start{margin-top:4px}.ddd-howto{margin:0;line-height:1.9}.ddd-game{display:flex;flex-direction:column;gap:8px;height:calc(100dvh - 120px);max-width:560px;margin:0 auto;user-select:none;-webkit-user-select:none}.ddd-game.shake .ddd-area{animation:ddd-shake .36s ease}@keyframes ddd-shake{0%,to{transform:translate(0)}20%{transform:translate(-9px)}40%{transform:translate(8px)}60%{transform:translate(-6px)}80%{transform:translate(4px)}}.ddd-hud{display:flex;align-items:center;gap:8px;flex-shrink:0}.ddd-hud-btn{flex-shrink:0}.ddd-hud-btn.muted{color:var(--accent-2)}.ddd-score{flex:1;display:flex;align-items:center;justify-content:center;gap:8px}.ddd-score-num{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums}.ddd-mult{font-size:12px;font-weight:800;color:#f59e0b;background:color-mix(in srgb,#f59e0b 16%,transparent);padding:2px 9px;border-radius:999px;animation:ddd-pop .3s ease}.ddd-lives{display:flex;gap:3px;flex-shrink:0}.ddd-heart{font-size:18px;transition:transform .2s,opacity .2s}.ddd-heart.on{color:#ef4444}.ddd-heart.off{color:var(--border);opacity:.7}.ddd-combo-row{display:flex;align-items:center;justify-content:space-between;height:18px;flex-shrink:0;padding:0 2px}.ddd-combo{font-size:12.5px;font-weight:700;color:var(--accent);animation:ddd-pop .3s ease}.ddd-wrong{display:inline-flex;align-items:center;gap:3px;font-size:12.5px;font-weight:700;color:#ef4444;margin-inline-start:auto}.ddd-area{position:relative;flex:1;min-height:340px;border-radius:20px;overflow:hidden;border:1px solid var(--border);background:radial-gradient(120% 60% at 50% -10%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 60%),linear-gradient(180deg,var(--bg-2),var(--bg-3));touch-action:none}.ddd-lanes{position:absolute;top:0;right:0;bottom:104px;left:0;display:grid;grid-template-columns:1fr 1fr 1fr;pointer-events:none}.ddd-lanes span{border-inline-end:1px dashed color-mix(in srgb,var(--text) 10%,transparent)}.ddd-lanes span:last-child{border:none}.ddd-word{position:absolute;top:0;left:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:92px;max-width:230px;height:64px;padding:6px 16px;border-radius:16px;background:linear-gradient(135deg,var(--accent),#f97316);color:#fff;box-shadow:0 8px 22px #00000038;pointer-events:none;will-change:transform;text-align:center}.ddd-word-de{font-size:18px;font-weight:800;line-height:1.15;white-space:nowrap}.ddd-word-fa{font-size:11.5px;opacity:.92;line-height:1.1}.ddd-slots{position:absolute;inset:auto 0 0 0;height:104px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:8px;z-index:2}.ddd-slot{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-radius:12px 12px 16px 16px;border:2px solid;border-top-width:4px;position:relative;transition:transform .12s,box-shadow .15s,background .15s}.ddd-slot-art{font-size:21px;font-weight:800;letter-spacing:.5px}.ddd-slot-fa{font-size:10.5px;opacity:.75}.ddd-slot-der{border-color:#3b82f6;background:color-mix(in srgb,#3b82f6 14%,transparent);color:#3b82f6}.ddd-slot-die{border-color:#ec4899;background:color-mix(in srgb,#ec4899 14%,transparent);color:#ec4899}.ddd-slot-das{border-color:#22c55e;background:color-mix(in srgb,#22c55e 14%,transparent);color:#16a34a}.ddd-slot.aim{transform:translateY(-6px);box-shadow:0 0 0 3px currentColor,0 8px 18px #0000002e;filter:brightness(1.08)}.ddd-slot.good{animation:ddd-slot-good .5s ease;box-shadow:0 0 0 3px #22c55e}.ddd-slot.bad{animation:ddd-slot-bad .4s ease;box-shadow:0 0 0 3px #ef4444}@keyframes ddd-slot-good{0%{transform:scale(1)}40%{transform:scale(1.12) translateY(-4px)}to{transform:scale(1)}}@keyframes ddd-slot-bad{0%,to{transform:translate(0)}30%{transform:translate(-6px)}70%{transform:translate(5px)}}.ddd-burst{position:absolute;bottom:150px;width:0;height:0;z-index:4;pointer-events:none}.ddd-burst.lane-0{left:16.66%}.ddd-burst.lane-1{left:50%}.ddd-burst.lane-2{left:83.33%}.ddd-particle{position:absolute;top:0;left:0;width:9px;height:9px;border-radius:50%;animation:ddd-particle var(--d, .5s) ease-out forwards}.ddd-burst.good .ddd-particle{background:#22c55e}.ddd-burst.bad .ddd-particle{background:#ef4444}@keyframes ddd-particle{0%{transform:translate(-50%,-50%) scale(1);opacity:1}to{transform:translate(calc(-50% + var(--dx)),calc(-50% + var(--dy))) scale(.2);opacity:0}}.ddd-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:6;display:grid;place-items:center;background:#00000080;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.ddd-count-num{font-size:64px;font-weight:900;color:#fff;text-shadow:0 6px 24px rgba(0,0,0,.4);animation:ddd-pop .4s ease}.ddd-panel{width:min(330px,86%);background:var(--bg-2);border:1px solid var(--border);border-radius:20px;padding:22px;display:flex;flex-direction:column;gap:10px;text-align:center;box-shadow:0 18px 50px #0000004d}.ddd-panel h3{margin:0}.ddd-over-emoji{font-size:46px}.ddd-over-score{font-size:44px;font-weight:900;color:var(--accent);line-height:1}.ddd-over-stats{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;font-size:13px;font-weight:700;margin-bottom:4px}.ddd-over-stats .ok{display:inline-flex;align-items:center;gap:3px;color:#16a34a}.ddd-over-stats .bad{display:inline-flex;align-items:center;gap:3px;color:#ef4444}@keyframes ddd-pop{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.15)}to{transform:scale(1);opacity:1}}.col-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.col-toggles{display:flex;gap:14px;flex-wrap:wrap}.col-toggle{display:inline-flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;-webkit-user-select:none;user-select:none}.col-toggle input{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}.col-hint{margin:6px 0 4px;line-height:1.8}.word-row{cursor:pointer;transition:background .12s}.word-row:hover{background:color-mix(in srgb,var(--text) 4%,transparent)}.cell-inner{display:inline-flex;align-items:center;gap:6px}.speak-inline{flex-shrink:0}.reveal-cell{border:none;background:color-mix(in srgb,var(--text) 7%,transparent);color:var(--text-muted);border-radius:8px;padding:4px 16px;letter-spacing:2px;cursor:pointer;font-size:15px;font-family:inherit;transition:background .12s,color .12s}.reveal-cell:hover{background:color-mix(in srgb,var(--accent) 18%,transparent);color:var(--accent)}.detail-sheet .detail-list{display:flex;flex-direction:column;gap:8px;margin:4px 0 10px;text-align:start}.detail-example-item+.detail-example-item{margin-top:8px}.flash-extra{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:-6px}.flash-extra .rx{font-size:13px;color:var(--text-muted)}.flash-extra .rx i{color:var(--accent);font-style:normal;font-weight:700;margin-inline-end:4px}.series-level{margin-inline-start:auto;color:#fff;font-size:11px;font-weight:800;padding:2px 9px;border-radius:999px;letter-spacing:.5px}.input-with-btn.top{align-items:flex-start}.input-with-btn textarea{flex:1}.input-with-btn.top .icon-btn{margin-top:3px}.lesson-parts-bar{display:flex;gap:8px;overflow-x:auto;padding:8px 2px 4px;margin:6px 0 2px;scrollbar-width:thin}.lesson-parts-bar::-webkit-scrollbar{height:5px}.lesson-parts-bar::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.part-chip{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;flex:0 0 auto;padding:6px 12px;border-radius:999px;border:1px solid var(--border);background:var(--bg-2);color:var(--text-muted);font-family:var(--font);font-size:12.5px;cursor:pointer;transition:all .18s}.part-chip:hover{border-color:var(--accent);color:var(--text)}.part-chip.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);font-weight:700}.part-chip.done{color:var(--text)}.part-chip.done .part-chip-num{color:#22c55e}.part-chip-num{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:11px;font-weight:800}.part-chip.active .part-chip-num{background:var(--accent);color:#fff}.lesson-parts-list{margin-top:18px;text-align:start;border-top:1px solid var(--border);padding-top:14px}.parts-list-title{margin:0 0 10px;font-size:14px;color:var(--text-muted);font-weight:700}.part-row{display:flex;align-items:center;gap:10px;width:100%;padding:11px 13px;margin-bottom:8px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-2);color:var(--text);font-family:var(--font);font-size:14px;cursor:pointer;transition:all .18s;text-align:start}.part-row:hover{border-color:var(--accent);transform:translateY(-1px)}.part-row.done{opacity:.85}.part-row-num{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:13px;flex:0 0 auto}.part-row.done .part-row-num{background:#22c55e29;color:#22c55e}.part-row.inprog .part-row-num{box-shadow:0 0 0 3px var(--accent-soft)}.part-row-title{flex:1;font-weight:600}.part-row-action{flex:0 0 auto;font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}.part-row.done .part-row-action{color:#22c55e;background:#22c55e24}.fl-part-done{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:20px 18px;margin:10px 0;border-radius:var(--radius);border:1px dashed var(--accent);background:var(--accent-soft)}.fl-part-done p{margin:0;font-weight:700;font-size:15px}.fl-part-done-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}.fl-part-done .btn.primary{width:100%;max-width:360px}.lesson-playbar{display:flex;justify-content:center;gap:20px;padding:4px 0 2px}.round-btn{width:52px;height:52px;border-radius:50%;border:1px solid var(--border);background:var(--bg-2);color:var(--text);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .18s;box-shadow:var(--shadow)}.round-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}.round-btn.paused{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent}.round-btn.hand.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}@keyframes barFadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.lesson-input.fade-in{animation:barFadeIn .25s ease}.lesson-parts{margin:6px 0 2px}.lesson-parts-toggle{display:flex;align-items:center;gap:8px;width:100%;padding:9px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-2);color:var(--text);font-family:var(--font);font-size:13px;cursor:pointer;transition:border-color .18s}.lesson-parts-toggle:hover{border-color:var(--accent)}.lpt-cur{flex:1;text-align:start;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lpt-caret{display:inline-flex;transition:transform .2s;color:var(--text-muted)}.lesson-parts.open .lpt-caret{transform:rotate(180deg)}.lesson-parts .lesson-parts-bar{margin:8px 0 0;animation:barFadeIn .2s ease}.fl-part-done-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;width:100%;max-width:440px}.fl-part-done-actions .btn{flex:1;min-width:150px;margin:0}.quiz-skip-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px;padding:8px 10px;border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg-2)}.quiz-skip-label{font-size:12.5px;color:var(--text-muted);margin-inline-end:auto}.quiz-skip-bar .btn.small.ok{color:#22c55e;border-color:#22c55e73}.quiz-reveal{margin:6px 0 10px;padding:10px 12px;border-radius:var(--radius);background:var(--accent-soft)}.quiz-reveal-label{font-size:12px;font-weight:700;color:var(--text-muted);margin-bottom:4px}.quiz-reveal-ans{font-weight:700;font-size:15px}.fl-exstart{display:flex;align-items:center;gap:6px;width:fit-content;margin:16px 0 8px;padding:5px 12px;border-radius:999px;border:1px dashed var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:12.5px}.ap-progress{margin-top:10px;display:flex;flex-direction:column;gap:5px}.ap-progress .lesson-progress{height:8px}.build-line{width:100%;max-width:380px;margin:6px auto 0;text-align:start}.build-line-head{display:flex;justify-content:space-between;font-size:12.5px;font-weight:700;margin-bottom:4px}.build-line-head span:last-child{color:var(--accent)}.build-line .lesson-progress{height:8px}.part-item{margin-bottom:8px}.part-row-line{display:flex;align-items:stretch;gap:8px}.part-row-line .part-row{flex:1;width:auto;margin-bottom:0}.part-row:disabled{opacity:.7;cursor:default}.part-audio-toggle{flex:0 0 auto;width:46px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-2);color:var(--text-muted);cursor:pointer;transition:all .18s}.part-audio-toggle:hover{border-color:var(--accent);color:var(--accent)}.part-audio-toggle.ready{color:#22c55e;border-color:#22c55e66}.part-audio-toggle.building{color:var(--accent);border-color:var(--accent)}.part-audio-toggle.open{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.part-audio-panel{margin:8px 0 4px;padding:12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-2);animation:barFadeIn .2s ease}.part-audio-build-btn{width:100%;margin-top:10px}.part-audio-building{margin-top:10px;display:flex;flex-direction:column;gap:5px}.part-audio-building .lesson-progress{height:8px}.ap-speed{display:flex;align-items:center;gap:10px;margin-top:4px}.ap-speed input[type=range]{flex:1;accent-color:var(--primary, #5b8def);height:4px}.ap-speed-val{min-width:48px;text-align:center;font-weight:700;font-size:13px;padding:2px 8px;border-radius:8px;background:var(--chip-bg, rgba(120, 140, 180, .14))}.ap-speed-hint{margin:4px 0 0}.anim-opts .anim-toggle{display:flex;gap:10px;align-items:flex-start;cursor:pointer}.anim-opts .anim-toggle input[type=checkbox]{width:20px;height:20px;margin-top:2px;flex-shrink:0;accent-color:var(--primary, #5b8def)}.anim-toggle-text{display:flex;flex-direction:column;gap:3px}.btn.danger{background:#fdecec;color:#c0392b;border-color:#f3c0bd}.btn.danger:hover{background:#f9d9d7}.part-audio-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.part-audio-actions .part-audio-build-btn{flex:1;min-width:0}.lesson-static-controls{display:flex;justify-content:center;margin-bottom:8px}.lesson-static-controls .btn{min-width:170px}.anim-speed-field{margin:12px 0 0 30px}.anim-speed-label{display:block;margin-bottom:4px;font-weight:600}.anim-speed-row{display:flex;align-items:center;gap:8px;padding:2px 6px 6px;max-width:420px;width:100%}.anim-speed-row input[type=range]{flex:1;accent-color:var(--primary, #5b8def);height:4px}.anim-speed-ico{font-size:16px;line-height:1}.anim-speed-num{min-width:22px;text-align:center;font-weight:700;font-size:13px;color:var(--primary, #5b8def)}.fl-listen{margin:12px 0;padding:12px 14px;border:1px dashed #6366f1;border-radius:12px;background:#6366f112}.fl-listen-label{display:flex;align-items:center;gap:8px;font-weight:600;margin-bottom:8px}.fl-listen-label>span{flex:1;min-width:0}.listen-upload{margin-top:8px;padding:10px 12px;border-radius:10px;background:var(--bg-2, #fff);border:1px solid var(--border, #e2e8f0)}.listen-upload.ok{border-color:#16a34a}.listen-upload.no-lesson{background:#f59e0b14;border-color:#f59e0b}.listen-up-head{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.listen-up-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:8px}.listen-up-audio{height:34px;max-width:240px}.listen-up-done{margin-top:8px;display:flex;flex-direction:column;gap:4px}.listen-up-done .ok-line{color:#16a34a;font-weight:600;font-size:13px}.listen-up-tx{margin-top:4px;padding:8px 10px;border-radius:8px;background:var(--bg-3, #f1f5f9);font-size:13px;line-height:1.7;max-height:160px;overflow:auto;white-space:pre-wrap}.btn.small.danger{color:#dc2626;border-color:#dc2626}.btn-link{background:none;border:none;color:var(--accent, #f59e0b);cursor:pointer;padding:0;text-align:start}.fl-listen-bubble{margin:10px 0;padding:12px 14px;border-radius:14px;border:1px solid #6366f1;background:#6366f114;display:flex;flex-direction:column;gap:10px}.fl-listen-row{display:flex;align-items:center;gap:8px}.fl-listen-ico{font-size:18px;line-height:1}.fl-listen-txt{flex:1;min-width:0;font-weight:600}.listen-replay-btn{align-self:flex-start}.fl-listen-player{margin:10px 0;padding:14px;border-radius:14px;border:1px solid #6366f1;background:#6366f114;display:flex;flex-direction:column;gap:12px}.flp-head{display:flex;align-items:center;gap:8px}.flp-instr{flex:1;min-width:0;font-weight:600}.flp-bar{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:12px;background:var(--bg-2, #fff);border:1px solid var(--border, #e2e8f0)}.flp-play{flex:0 0 auto;width:42px;height:42px;background:#6366f1;color:#fff}.flp-nudge{flex:0 0 auto;display:flex;align-items:center;gap:1px;font-size:13px;white-space:nowrap}.flp-nudge-n{font-size:11px;font-weight:700}.flp-seek{flex:1;min-width:60px;accent-color:#6366f1;cursor:pointer}.flp-time{flex:0 0 auto;font-size:12px;font-variant-numeric:tabular-nums;color:var(--text-2, #64748b)}.flp-script{display:flex;flex-direction:column;gap:10px;padding:12px;border-radius:12px;background:var(--bg-2, #fff);border:1px solid var(--border, #e2e8f0);max-height:320px;overflow:auto}.flp-line{display:flex;flex-direction:column;gap:2px;padding-bottom:8px;border-bottom:1px dashed var(--border, #e2e8f0)}.flp-line:last-child{border-bottom:none;padding-bottom:0}.flp-de{font-size:16px;line-height:1.9;font-weight:600}.flp-fa{font-size:13px;color:var(--text-2, #64748b);line-height:1.7}.flp-w{transition:color .12s,background .12s;border-radius:4px}.flp-w.past{color:#6366f1}.flp-w.cur{color:#fff;background:#6366f1;padding:0 2px}.flp-toggle{align-self:flex-start}.flp-actions{display:flex;gap:10px;flex-wrap:wrap}.btn.choice.skip{border-color:#94a3b8;color:var(--text-2, #64748b)}.listen-up-script{margin-top:6px;max-height:220px}.lesson-sections-nav{display:flex;flex-direction:column;gap:8px;margin:14px 0 6px}.section-btn{display:flex;align-items:center;gap:12px;width:100%;padding:12px 14px;border:1px solid var(--border, #e2e8f0);border-radius:14px;background:var(--card-2, #f8fafc);cursor:pointer;transition:background .15s,border-color .15s,transform .1s}.section-btn:hover{border-color:#6366f1;background:#eef2ff}.section-btn:active{transform:scale(.99)}.section-emoji{font-size:22px;line-height:1}.section-txt{display:flex;flex-direction:column;align-items:flex-start;gap:2px;flex:1}.section-txt b{font-size:15px}.v2-section{display:flex;flex-direction:column;gap:12px}.v2-sec-head{display:flex;align-items:center;gap:10px}.v2-sec-head h3{flex:1;margin:0;font-size:17px}.sb-hint{margin:0;line-height:1.7}.sb-sentence{display:flex;flex-wrap:wrap;gap:10px 8px;padding:18px 12px;border-radius:14px;background:var(--card-2, #f8fafc);border:1px solid var(--border, #e2e8f0);justify-content:center}.sb-word{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 8px 4px;border:1px solid transparent;border-radius:10px;background:transparent;cursor:pointer;min-width:40px;transition:background .12s,border-color .12s}.sb-word:hover{background:#eef2ff}.sb-word.on{background:#eef2ff;border-color:#c7d2fe}.sb-num{font-size:10px;color:#94a3b8;font-weight:700;line-height:1}.sb-fa{font-size:18px;font-weight:600;color:var(--text, #0f172a)}.sb-de{font-size:13px;font-weight:600;color:#6366f1;min-height:17px;letter-spacing:.2px}.sb-full{padding:12px 14px;border-radius:12px;background:#eef2ff;color:#3730a3;font-size:16px;font-weight:600;text-align:center}.sb-controls{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.sb-nav{display:flex;align-items:center;justify-content:space-between;gap:10px}.sb-nav .btn{flex:1;justify-content:center}.sb-nav .btn:nth-child(2){flex:0 0 auto}.sb-gen{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-top:6px;border-top:1px dashed var(--border, #e2e8f0)}.sb-gen input{width:70px}.capture-btn{flex-shrink:0}.hw-tools .icon-btn.active{color:var(--accent);border-color:var(--accent)}.hw-tools .icon-btn.palm.active{color:#fff;background:var(--accent);border-color:var(--accent)}.hw-title{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}.hw-mode{font-size:12px;font-weight:700;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:1px 8px;white-space:nowrap}.lesson-input-wrap{display:flex;flex-direction:column;gap:8px}.attach-preview{position:relative;align-self:flex-start;border:1px solid var(--border);border-radius:12px;overflow:hidden;max-width:160px}.attach-preview img{display:block;max-width:100%;max-height:120px;object-fit:cover}.attach-remove{position:absolute;top:4px;inset-inline-end:4px;background:#0000008c;color:#fff;border:none;width:24px;height:24px}.fl-student-img{display:block;max-width:200px;max-height:160px;border-radius:10px;margin-bottom:6px}.hw-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;z-index:300;display:flex;align-items:center;justify-content:center;padding:10px}.hw-modal{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);width:min(720px,100%);height:min(560px,92dvh);display:flex;flex-direction:column;overflow:hidden}.hw-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 14px;border-bottom:1px solid var(--border);flex-wrap:wrap}.hw-tools{display:flex;align-items:center;gap:6px}.hw-tools input[type=range]{width:70px}.hw-canvas-wrap{flex:1;min-height:0;background:#fff}.hw-canvas{display:block;touch-action:none;cursor:crosshair}.hw-actions{display:flex;justify-content:flex-end;gap:8px;padding:10px 14px;border-top:1px solid var(--border)}.course-emoji{font-size:28px;flex-shrink:0}.session-num{width:38px;height:38px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700;background:var(--bg-3);border:1px solid var(--border);color:var(--text)}.session-num.done{background:#22c55e26;border-color:#22c55e80;color:#22c55e}.tag.warn-tag{background:#f59e0b26;color:#f59e0b}.tag.fail-tag{background:#ef444426;color:#ef4444}.build-panel{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}.build-stage{margin:0}.course-wizard .wizard-progress{margin-bottom:14px}.wizard-card{display:flex;flex-direction:column;gap:12px}.wizard-card textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:12px;color:var(--text);padding:12px;font-family:var(--font);font-size:14.5px;line-height:1.9;resize:vertical}.wizard-card textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.wizard-options{display:flex;flex-direction:column;gap:10px}.wizard-option{display:flex;align-items:center;gap:12px;text-align:start;background:var(--bg);border:1px solid var(--border);border-radius:14px;padding:14px;color:var(--text);cursor:pointer;transition:border .15s,transform .15s}.wizard-option:hover{border-color:var(--accent);transform:translateY(-1px)}.wizard-option.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.wizard-option-emoji{font-size:26px}.wizard-option-txt{display:flex;flex-direction:column;gap:3px}.wizard-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.wizard-planning{display:flex;flex-direction:column;gap:10px;align-items:center}.big-confirm{padding:12px 22px;font-size:15px}.center-text{text-align:center}.plan-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px}.plan-table{width:100%;border-collapse:collapse;font-size:13.5px}.plan-table th,.plan-table td{padding:9px 12px;border-bottom:1px solid var(--border);text-align:start;vertical-align:top}.plan-table thead th{background:var(--bg-3);font-weight:700;white-space:nowrap}.plan-table tr:last-child td{border-bottom:none}.plan-n{font-weight:700;color:var(--accent);white-space:nowrap}.plan-note{background:var(--bg-3);border-radius:12px;padding:10px 14px;font-size:13.5px;line-height:2;margin:0}.plan-feedback{display:flex;flex-direction:column;gap:8px}.exam-card{display:flex;flex-direction:column;gap:12px;margin-top:12px}.exam-q-head{display:flex;align-items:center;justify-content:space-between}.exam-q-prompt{font-size:15px;line-height:2.1;margin:0}.exam-options{display:flex;flex-direction:column;gap:8px}.exam-option{display:flex;align-items:center;gap:10px;text-align:start;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:11px 13px;color:var(--text);font-size:14px;cursor:pointer;transition:border .15s}.exam-option:hover{border-color:var(--accent)}.exam-option.active{border-color:var(--accent);background:var(--accent-soft)}.exam-option-key{width:26px;height:26px;border-radius:50%;background:var(--bg-3);display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}.exam-essay textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:12px;color:var(--text);padding:12px;font-family:var(--font);font-size:14.5px;line-height:1.9;resize:vertical}.exam-essay textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.exam-essay-tools{display:flex;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap}.exam-nav{display:flex;justify-content:space-between;gap:10px;margin-top:12px}.exam-result-card{display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center;margin-top:12px}.exam-score{display:flex;flex-direction:column;align-items:center;gap:4px}.exam-score-num{font-size:42px;font-weight:800}.exam-score.good .exam-score-num{color:#22c55e}.exam-score.mid .exam-score-num{color:#f59e0b}.exam-score.bad .exam-score-num{color:#ef4444}.exam-summary{margin:0;line-height:2.1;font-size:14px}.exam-q-result{display:flex;flex-direction:column;gap:8px;margin-top:10px;border-inline-start:3px solid var(--border)}.exam-q-result.ok{border-inline-start-color:#22c55e}.exam-q-result.wrong{border-inline-start-color:#ef4444}.exam-feedback{background:var(--bg-3);border-radius:10px;padding:9px 12px;margin:0;font-size:13.5px;line-height:2}.math-bit{display:inline-block;direction:ltr;unicode-bidi:isolate;vertical-align:middle;padding:0 2px;max-width:100%;overflow-x:auto;overflow-y:hidden}.math-bit .katex{font-size:1.08em}.math-bit.math-block{display:block;text-align:center;margin:10px auto;padding:6px 4px}.math-bit.math-block .katex{font-size:1.2em}.fl-table .math-bit .katex,.exam-option .math-bit .katex,.quiz-option .math-bit .katex{font-size:1em}.source-list{display:flex;flex-direction:column;gap:8px}.source-row{display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:9px 12px}.source-emoji{font-size:20px}.source-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13.5px}.source-mode{display:flex;flex-direction:column;gap:8px}.intake-q{display:flex;flex-direction:column;gap:8px;padding:10px 0;border-bottom:1px dashed var(--border)}.intake-q:last-of-type{border-bottom:none}.intake-q-text{margin:0;font-weight:700;line-height:2}.intake-options{display:flex;flex-direction:column;gap:6px}.plan-check{width:34px}.plan-check input{width:17px;height:17px;accent-color:var(--accent);cursor:pointer}.plan-table tbody tr{cursor:pointer}.plan-row-off td{opacity:.45}.plan-select-all{display:flex;align-items:center;gap:8px}.course-progress-card{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}.session-num.off{opacity:.55;border-style:dashed}.session-unbuilt{opacity:.85}.session-unbuilt .btn{flex-shrink:0}.playback-settings{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}.session-num{font-family:Segoe UI,Tahoma,Arial,sans-serif}.anim-speed-row.head-speed{flex-shrink:0}.anim-speed-row.head-speed input[type=range]{width:88px}.fl-practice-offer{display:flex;gap:10px;align-items:flex-start;background:#5b8def1a;border:1px solid rgba(91,141,239,.4);border-radius:16px;padding:13px 16px;font-size:14.5px;line-height:2;max-width:94%}.fl-practice-ico{font-size:20px;flex-shrink:0;margin-top:2px}.fl-practice-txt{display:flex;flex-direction:column;gap:2px}.fl-q.practice{border-color:#5b8def73;background:#5b8def1a}.fl-q.practice .fl-q-icon{font-size:16px}.fl-q.practice .diff-tag{margin-bottom:4px}.diff-tag{display:inline-flex;align-items:center;gap:4px;white-space:nowrap}.diff-tag.diff-easy{background:#22c55e24;border:1px solid rgba(34,197,94,.4)}.diff-tag.diff-medium{background:#f59e0b24;border:1px solid rgba(245,158,11,.4)}.diff-tag.diff-hard{background:#ef444424;border:1px solid rgba(239,68,68,.4)}.diff-tag.diff-vhard{background:#a855f724;border:1px solid rgba(168,85,247,.4)}.field-pick{margin-top:14px;border-top:1px dashed var(--border);padding-top:12px}.field-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.field-chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg-3);border:1px solid var(--border);color:var(--text);border-radius:999px;padding:7px 13px;font-size:13px;font-family:inherit;cursor:pointer;transition:border-color .15s,background .15s}.field-chip.active{border-color:var(--accent);background:var(--accent-soft);font-weight:700}.field-tiles{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.field-tiles::-webkit-scrollbar{display:none}.field-tile{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:86px;flex-shrink:0;background:var(--bg-2);border:1px solid var(--border);color:var(--text);border-radius:14px;padding:10px 12px;font-family:inherit;cursor:pointer;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}.field-tile:active{transform:scale(.97)}.field-tile.active{border-color:var(--accent);background:var(--accent-soft)}.field-tile-emoji{font-size:22px;line-height:1}.field-tile-label{font-size:12px;font-weight:700;white-space:nowrap}.field-tile-count{font-size:11px;color:var(--text-muted)}.field-section{margin-bottom:18px}.field-section-head{display:flex;align-items:center;gap:8px;font-size:15px;margin:6px 2px 10px}.review-note{align-self:center;background:var(--accent-soft);border:1px solid rgba(245,158,11,.4);color:var(--text);border-radius:999px;padding:7px 16px;font-size:12.5px;margin-bottom:6px}.notebook-page{max-width:1100px;margin:0 auto;height:100%;display:flex;flex-direction:column;min-height:0}.notebook-page>.note-editor,.notebook-page>.notebook-panel{flex:1;min-height:0}.notebook-panel{display:flex;flex-direction:column;gap:14px}.notebook-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;flex-wrap:wrap}.notebook-head-title h2{margin:0}.notebook-head-actions{display:flex;align-items:center;gap:8px}.notebook-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.note-card{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:var(--bg-2);cursor:pointer;transition:transform .12s,box-shadow .12s}.note-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00000029}.note-card-thumb{height:120px;position:relative;border-bottom:1px solid var(--border);background-image:repeating-linear-gradient(rgba(0,0,0,.05) 0 1px,transparent 1px 22px)}.note-card-tmpl{position:absolute;top:8px;inset-inline-start:8px;font-size:11px;background:#00000073;color:#fff;padding:2px 8px;border-radius:999px}.note-card-strokes{position:absolute;bottom:8px;inset-inline-end:8px;font-size:11px;background:#00000059;color:#fff;padding:2px 8px;border-radius:999px}.note-card-foot{padding:8px 10px}.note-card-title{font-weight:700;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.note-card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:4px}.note-editor{display:flex;flex-direction:column;height:100%;min-height:0}.note-toolbar{display:flex;flex-direction:column;gap:8px;padding-bottom:8px;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5;background:var(--bg)}.nt-row{display:flex;align-items:center;gap:8px}.nt-row.wrap{flex-wrap:wrap}.note-title-input{flex:1;min-width:0;background:transparent;border:none;color:var(--text);font-size:16px;font-weight:700;padding:6px 4px;border-bottom:1px solid transparent}.note-title-input:focus{outline:none;border-bottom-color:var(--accent)}.note-save{font-size:11.5px;white-space:nowrap}.note-save.saved{color:#22c55e}.note-save.saving{color:var(--text-muted)}.note-save.dirty{color:var(--accent)}.nt-sep{width:1px;height:22px;background:var(--border)}.nt-swatches{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.swatch{width:22px;height:22px;border-radius:50%;border:2px solid var(--border);padding:0;cursor:pointer;position:relative}.swatch.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.swatch.custom{overflow:hidden;display:inline-flex;align-items:center;justify-content:center;background:conic-gradient(red,orange,#ff0,green,#0ff,#00f,#f0f,red)}.swatch.custom input[type=color]{opacity:0;width:40px;height:40px;border:none;cursor:pointer}.swatch.small{width:18px;height:18px}.nt-width{width:90px}.pen-tray{display:flex;align-items:flex-end;gap:1px;padding:3px 7px 0;background:var(--bg-2);border:1px solid var(--border);border-radius:12px}.pen-btn{background:transparent;border:none;padding:2px 2px 0;margin:0;cursor:pointer;display:flex;align-items:flex-end;line-height:0;border-radius:8px;position:relative;transition:transform .13s ease}.pen-btn:hover{transform:translateY(-3px)}.pen-btn.active{transform:translateY(-7px)}.pen-btn.active:after{content:"";position:absolute;left:3px;right:3px;bottom:-4px;height:3px;border-radius:3px;background:var(--accent)}.nt-select{background:var(--bg-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:5px 8px;font-size:13px}.note-canvas-wrap{flex:1;min-height:0;overflow:hidden;position:relative;margin-top:10px;border:1px solid var(--border);border-radius:12px;background:#f7f7f7}.note-canvas{display:block;touch-action:none;cursor:crosshair;will-change:transform}body.note-editing .topbar{display:none}.nt-pagepanel-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:18}.nt-pagepanel{position:absolute;top:100%;left:8px;right:8px;margin-top:6px;z-index:19;display:flex;flex-direction:column;gap:12px;padding:14px 16px;background:var(--bg-2);border:1px solid var(--border);border-radius:14px;box-shadow:0 12px 40px #00000047}.nt-pp-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.nt-pp-label{font-size:12.5px;color:var(--text-muted);min-width:84px}.nt-pp-tmpl{display:flex;gap:6px;flex-wrap:wrap}.nt-row.single{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;gap:5px;padding:0 2px 3px;-webkit-overflow-scrolling:touch}.nt-row.single>*{flex:0 0 auto}.nt-row.single .nt-swatches{flex-wrap:nowrap;gap:4px}.nt-row.single .nt-swatches .swatch{width:19px;height:19px}.nt-row.single .nt-width{width:78px}.nt-row.single .nt-sep{margin:0 1px}.nt-row.single::-webkit-scrollbar{height:5px}.nt-row.single::-webkit-scrollbar-thumb{background:var(--border);border-radius:5px}.sel-toolbar{position:absolute;display:flex;align-items:center;gap:6px;z-index:8;background:var(--bg-2);border:1px solid var(--border);border-radius:10px;padding:4px 6px;box-shadow:0 6px 20px #0003}.sel-count{font-size:11.5px;color:var(--text-muted);white-space:nowrap}.icon-btn.small{width:30px;height:30px}.note-open-btn{flex-shrink:0}.note-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:320;background:var(--bg);padding:12px;display:flex;flex-direction:column}.note-overlay .notebook-panel{height:100%}.note-overlay .note-editor{flex:1}.exam-answer-imgs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:8px}.exam-answer-img{position:relative;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#fff}.exam-answer-img img{display:block;max-width:140px;max-height:110px;object-fit:contain}.exam-answer-img .attach-remove{position:absolute;top:3px;inset-inline-end:3px}.note-editor{position:relative}.note-editor,.note-editor *{-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-touch-callout:none}.btn.small{padding:5px 10px;font-size:12.5px;border-radius:8px}.btn.ghost{background:var(--bg-2);border:1px solid var(--border);color:var(--text)}.note-addpage{display:inline-flex;align-items:center;gap:4px;white-space:nowrap}.note-page-badge{position:absolute;bottom:12px;inset-inline-end:14px;z-index:9;background:#0000009e;color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;pointer-events:none}.lesson-shell{height:100%;min-height:0}.lesson-shell.split{display:flex;direction:ltr;gap:0}.lesson-shell.split-h{flex-direction:row}.lesson-shell.split-v{flex-direction:column}.lesson-shell.split .lesson-play,.lesson-shell.split .note-pane{direction:rtl;min-width:0;min-height:0}.lesson-shell.split .lesson-play{max-width:none;margin:0}.note-pane{flex:1 1 0;min-width:0;min-height:0;overflow:hidden;display:flex;flex-direction:column;background:var(--bg);border-inline-start:1px solid var(--border)}.lesson-shell.split-v .note-pane{border-inline-start:none;border-top:1px solid var(--border)}.note-pane>.notebook-panel,.note-pane>.note-editor{flex:1;min-height:0}.note-pane .notebook-panel{padding:8px;overflow:auto}.split-divider{flex:0 0 auto;display:flex;align-items:center;justify-content:center;background:var(--bg-2);touch-action:none;z-index:6}.lesson-shell.split-h .split-divider{width:16px;cursor:col-resize;border-inline:1px solid var(--border)}.lesson-shell.split-v .split-divider{height:16px;cursor:row-resize;border-block:1px solid var(--border)}.split-grip{background:var(--text-muted);border-radius:999px;opacity:.6}.lesson-shell.split-h .split-grip{width:4px;height:42px}.lesson-shell.split-v .split-grip{width:42px;height:4px}.split-divider:hover .split-grip{background:var(--accent);opacity:1}.split-restore{position:absolute;z-index:340;display:inline-flex;align-items:center;gap:4px;background:var(--accent);color:#fff;border:none;border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:700;box-shadow:0 6px 18px #00000040;cursor:pointer}.lesson-shell.split-v .split-restore{top:6px;inset-inline-start:50%;transform:translate(50%)}.infographic-page{max-width:900px;margin:0 auto}.infographic-empty{flex-direction:column;gap:14px;text-align:center}.infographic-empty p{max-width:480px}.infographic-ready{display:flex;flex-direction:column;gap:14px;align-items:center}.infographic-img{width:100%;max-width:100%;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}.infographic-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.lesson-shell.split-h .split-restore{top:50%;inset-inline-start:6px;transform:translateY(-50%)}
