@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,d09GMgABAAAAAA4oAA4AAAAAHbQAAA3TAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAABmAAgRQIDgmcDBEICo1oijYBNgIkA14LMgAEIAWJAAeBHAyBHBvbGiMRdnO0IkRRkiYDgr9KsJ1NUAf2kILNxgUmgqIgq1P89vcbIcmsQbRps3vCcXdYOKSWEPEKgZgQkprQQsxIXUgq0DqpGKmIvrgkeVGtEQD9DzAO29fM9jYhxZEsL2FeURH2JN4MIcTdO049NCVdxQ/w9NrSYFEBKTDKpLKfNkCGDc1RwjZLQcm3vqJ2UW9Xfa3tgAHz6ivp6vgC2yD4/6352ndnN0X0TL7seypkjZlMsjmZnf0Mm5Q+JykRWQBKCVCVPbARPXWyQtb5VgLB6Biq7/Uixcj2WGqdI8tGSgkuRG+t910GKP2D7AQH0DB9FMDW/obJZ8giFI3Wg8Cvevz0M+5m0rTh7XDBlvo9Y4vm13EXmfttwI4mBo1EG15fxJhUiCLbiiyCf/ZA6MFAhg3pGIZGdGIVjtPn6UcMk9A/UUr9PhoNsCENw1APAq0gpH73e+M+0ueyHbabc3vkbcdtzcf/fiy+NxQEjf9ud/ELBHAXJ0nk4z+MXH2Ev/kWyV4k7SkvpPc9Qr38F6RPWnM9cN6DJ0AdD1BhtgABtmoRoFCvPsBAumNm6soZG2Gk5GyVTo2sJncSyp0jQTYoR6WDvTwaaEcHsxHfvuWhHA3a6bN7twRKtcGok6NsCi7jYRrM2jExsUFMxMQYuJbMhuWNOumEJy9hi29Dmg5zMp/A5+hhPG19j1vBrq8JTLr8ki5VLPmG/PynJHVul440bxg5xuymHUFPBshC+nA9I1FmwbRBTNHAcik3Oae0cxKoI3MOriM42UrPe51nsaGxJ+WfXubAsP84aabUlQSJ1IiE0iPETLUU4CATgfXSCSpuRFRmCGbO+wSpAnzaeaCYW1VNEysRtuXCEL1kUFUbbtMv3Tilt/1c11jt3Q5bbMa84cpWipp8Elw3MZhOHsOlwwVUQM3lAR35JiFQbaYCRnMF2lxAWoOg2gyoIV4PouX8HytNIfLhqpJtXB4vjiViUI8IJ7bkC4ikkQvKksnOTKICwnqWSZ9YS5f0WCxmpgjbIq7EJcM4aI2nmhLNY2JIUgOjXZFWBHb+x5oh6cwb0Tv1ackHdKi0I9OO2wE9aogIOn540CCCziyhN+IaejtgAONKznHlHyutPrHGwCx9S6B8kfS4Mfi4Eyv7OU730bT1SCBjt834cXsf43zVjPUqqJjgrjeGnBxSG4aYAKFuVbeCfkDIjAqMb6yLNIbCuvXhMH2/+k2vkNpkORhR59N1CkzoOENvneIosjYmuTxlhUzaGEJQ/iWqx4dmwpmKjrwTiTGTCVozNAYqk/zXOndWxuWSmJkQpJw3pK5KX6QrLt5LATMqpmPAQhkhK6PUjzHUn7E0gHE0kPE0iKkolgkUx9SZmVAdDgpffdyJKg3k7VmzYGCwVXGz/tXmkOIp+vcWs+EMuhhvN0h9uhfzWJziBQmCREGSIFmQIkgVpAnSBRmC//6hkLZwaVhwxlrJSOdqlFtOYxlau9F2QN5Y98xmIAsiM1HVp2VFX+DHHGg6Ecjh3vmqtidX3qHI2qycTk/iwxSt5UzTmEP92ZBnEWTk4Mx8Mpl78ZDokxg/KWb+Q0QkvdKVmq3TMW+RXEgrsziSAfNXFMhDc60N5N9jQzjfO0kBKpUZl0ZmwJ41j/B9Hz6wmRaJB84niNmQrzp9eSlQCDDzazGDdVi3P36VZQ+Jy4f9UBNp+3zTjqI4abaFAm+GShVaXlsGdF3FYzZcDI6cori4kMxUECl9IjJZpzkvitAoxKue+90pDMvcKRxLl53TmOKCmV/xRolNKSqqUxc6LStOETmFOiLZZptlZepcKiAzteG8PEdpnQpbOMNcMsR4RR2Bs0cKFEvSmIjAFcnarqwUL4lDhHmnVkwu1IwshbiCcgvOheZuYyOteufZZwlcTlLgnZ3o/WcYdzZHW/WGaqaVfmTZ1aWCceJjkbZqsfbkOtcFlUZM/jy+hXHDbaUobWqqXaeWobbLO99yG5N3U4wxco0rQGGcOLASFMXeJoham8M+/x6O2WywK2l4HGbq1CoUyC/IZikQhdq3SiuNrvAEj0AVu9x2x3lp/xWzahaxidezFVtdcb5uEnzyl0ZmYiuKI0exvCd4Xc9CV1KB0db00z92wDPde0kukbvZIWN6jUWFTmPIC/Y4UPCm8UfDTFZpZNon1qLFTkBhxzB+FjQRA2Q/YRJT8pQigslMaUpFyAG8TMlXigiqmAZX4xgijKjRlGpLE0GdplRfCaJo0JQaSxNBk6ZmMzcya0FmrcisDdn0Q3HI2sWSppYigmlM1XT/kLQZSNpMJG0WkjYbSZuDpM1F0uYhFc1HxU4m1QJjDK6iL0S5uSj5rgXc3RejEigtcRBtqYPQsiTskmO5vosV+q4VGIKbOkDg0jtRrq+Em1YloaTFar3EGr1EUC8R0kus1Uus00usL97ABr2BjXoDm/QGNhuWtMVBKOwg/i78lT7hBsAvDmwHc/ao3vmUbBmhjeYySZNWvGkfZAgISDSaDo1SVpzGDsAEkF8B+gEapViUoZgUWXcRIGFZNm6gWbAKk0bp0k1MHG9fLYtV4iS2SmLEQFARzRcnf9PUS0LVn05/J9MiRRBU3v2IrvW974v4N00L7ZMk0wXP1409CHo/an8zTRHD3eSJ6m8D4YMkZNl3M79sqeuAsr/m3f+8/yl7A50aiAEJgeBeMWzu7ui9UfUBCe2TIqZIoOd/3/udRBOQidQZUERzb2/VwZN1H/Sju82ew2H2Wfr6qvfVf3hqwDvAIpkQVFy4B9Pe9e4/XvPeceu7h3dvO56iJPf0+A6cqA2ip18ER+iFgggiuOkvj24bby0N9j2UHIkgqIt+sVgfodC4YghLSMjSZbH0VR/6dMDrYJeKHilKTemt6v6kvzvn3/RrdWtr0GoN/xL+Sex/cPYLUpepx9cz/D46UPU5KXgAQa+NDps1v6J3xP1i2HtaDB0M9aX2deA7SYff//+gUCovMmIK/qfsFcOk+4Y5ZN97XlG6zebqtMbKgeRFi51vnxTQYBUik2rS/Cn6PC8ADR8FGxsRPB82dzfND90gIcshOcYUkfjherBz53odpm6TP8txlwOZ71xmfHHOvq053qFF/MRlS3jP0ELudrf2OeN8DHvp6ZceLe8qKYvWz/7yp0u4dKPfli3CYq0O13Ih71mylJ80tOi10On8wi+F4+LWgDPeJ30msSQt9/vkmHq9/Lvo2b461mP801v3W4xTcs6CbvF9UDdrSt+A8OUbpSh55qAUFXWznBBfdeJ8a4d7ugT5tvxUza3h9m4H7ptTqiG4z0g5dc0X29OcGlhpGFMpQo9ytTS+NViZpNdvU4kWx+LKxNY10kQ1yqGXrhe4/1nvP7E+nd5A92TtaRplbHSqoIdOqtRWti+fkB5/n1+/VvCmz12pG1kpQWsfi1ftlBobm0bpngs16CHkbIwdLnParxtTV3QYRlfJ0KFskH7pdN/YDn+yRuSd7sNH3aO0DYPggk6uWuXrfOc+fa3VTxFVvKaNxHsiHmsXyCLIE5yuOeN3/Jdf8HBL/5M6shjyhxHx9BjB1O0+4NLOnjLLSxwO7ukN4jMbOIcD879KLSi6Pk61Oqm2377n8079PXEEQ7cy7OKEC9nbpet118fxweTafpt69x/Bt8UqGzNQt7aelpc44dn5cqhwf71+qKp/Zf/+a0zcizOUWpl/iBcSXip0pplkatCchoH5c5aUM8I7/dWxAej8WicPL1URFZ9BDJelUwEwTkGqUhgSlydVes95YdXvhh9Gfz/aeFWvgVb4tuLbcv4+wLdutVZv/cUonwBD/6eDlE0aSiKK/uoH3+J1wDE/jMVqY2ysGufN84oIXB0sPzy8ollX/LegY74DgJXJR57sn+VGza0x3DnuIgABFM15LmajjjsNlYj+JEZGbuRYcAMOWxFkPN2w6Wd46xo4gVWQR/X4lyI/R6K/YK0110GzudPRW7Y+UOBGTfNNzHeYT0fiH0taunBpq9HEW8OKSaBGj21L0MqenEmNRWBAWDWAk4CpNoEZJ2tTaPFgbQYj8HxtFilErs3BTRwT8uO1NXQaWfIotchmPkAF5mMBAliEmZiOGVgCG9LgRzpscMAOOwowlT3JhusdazXGSC/hxR3UlmWVwWHpOIKheqONvjyhSiTHIkVUco5bnji8m//zL7PKaT1Vl5I6UE609f+gkr6MZKVyKc7zJRmCahLsdlyA5fdQkRSan9LgnnLEyGSkaKJCJog0wAgvepWBt80+1yKln1bMVtCljfNWDueKLsWwaEbBSfSPTEmVRsUcYYMnEjcjeyCZzBXK9E9BYBXLKjOSpUDR+nEV3TFSUdQaz+ot98QxgXwx0GQ+EEUAKB2qZPkQQ0GqFD8UPFMqyaCHM24BZmSGic9EYMagKizOw9Hz50DMrDLrqqLkTAhplMictiCAx5S3BIUQdeJeLnBy2CNtMfz6cV4u8XKoFZQesbf9YZiIERiHjaNodDW6LgcirX/mPnJIkBGDUpTBhSa0EIr38D5hCIszhCM8URGBqImoWjpvpt1ebu/v3Gl3qJfMnNM+9V+kiRFyROTPHQWOcs1dNW94/ukKMPZBvDi55i5CttdeJz84DLngLqjcdwEZ87bFFR8CIG35OAkDVN6VRDZ7aq67NteYqZ2lpT8oYB2CytoBd6VuAx4WgiAsnuj3WohG+LugzXiQRDeM3XYXlULv4dp5VFYC) 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:"0.16.47"}.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}.app{display:flex;min-height:100vh;background:radial-gradient(circle at 18% 12%,rgba(255,196,87,.18),transparent 30%),radial-gradient(circle at 88% 8%,rgba(76,224,202,.16),transparent 28%),linear-gradient(145deg,#0a0d13,#101521 48%,#0d1119)}.sidebar{width:252px;flex-shrink:0;background:#0a0d13d1;border-right:1px solid var(--border);padding:24px 16px;position:sticky;top:0;height:100vh;overflow-y:auto;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);transition:width .22s ease,padding .22s ease}.sidebar-title{display:flex;align-items:center;gap:12px;margin-bottom:26px}.sidebar-brand-copy{min-width:0;transition:opacity .16s ease,transform .16s ease}.sidebar-title>span{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#ff7a59);color:#15100a;font-family:var(--font-display);font-size:1.25rem;font-weight:800;box-shadow:0 12px 26px #ffb0203d}.sidebar-title strong{display:block;font-family:var(--font-display);font-size:1rem;color:var(--text)}.sidebar-title small{display:block;color:var(--text-muted);font-size:.72rem;margin-top:2px}.sidebar-toggle{width:34px;height:34px;display:grid;place-items:center;margin:0 0 18px auto;border-radius:8px;border:1px solid var(--border-strong);background:#ffffff0f;color:var(--text);font-size:1.35rem;line-height:1;transition:background .18s,transform .18s}.sidebar-toggle:hover{background:#ffffff1c;transform:translateY(-1px)}.sidebar ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.nav-item{width:100%;min-height:44px;display:flex;align-items:center;gap:10px;text-align:left;background:transparent;border:1px solid transparent;color:var(--text-dim);padding:9px 10px;border-radius:8px;font-size:.9rem;transition:background .18s,border-color .18s,color .18s,transform .18s}.nav-item span{flex-shrink:0}.nav-tag{width:28px;height:26px;border-radius:7px;display:grid;place-items:center;background:#ffffff0e;color:var(--text-muted);font-size:.7rem;font-weight:800}.nav-label{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;transition:opacity .16s ease,transform .16s ease}.nav-item:hover{background:#ffffff0e;color:var(--text);transform:translate(2px)}.nav-item.active{background:linear-gradient(135deg,#ffb0202e,#35d0ba14);border-color:#ffb02057;color:var(--text);font-weight:700}.nav-item.active .nav-tag{background:var(--accent);color:#171107}.sidebar.collapsed{width:86px;padding:24px 12px;overflow-x:visible}.sidebar.collapsed .sidebar-title{justify-content:center;margin-bottom:18px}.sidebar.collapsed .sidebar-brand-copy,.sidebar.collapsed .nav-label{opacity:0;pointer-events:none;position:absolute;transform:translate(-6px)}.sidebar.collapsed .sidebar-toggle{margin:0 auto 18px}.sidebar.collapsed .nav-item{justify-content:center;padding:9px;gap:0}.sidebar.collapsed .nav-item:hover{transform:translate(0)}.sidebar.collapsed .nav-tag{width:34px;height:32px}.content{flex:1;width:min(100%,1180px);--page-pad: clamp(22px, 5vw, 70px);padding:42px var(--page-pad) 120px}.hero{position:relative;display:grid;grid-template-columns:minmax(300px,.76fr) minmax(420px,1.24fr);gap:clamp(22px,4vw,48px);align-items:center;margin:0 0 68px;padding:26px;border-radius:8px;background:linear-gradient(135deg,#ffffff14,#ffffff06),#06101bb8;border:1px solid rgba(255,255,255,.12);box-shadow:0 34px 90px #00000052}.hero-copy{position:relative;z-index:1;width:100%}.hero-eyebrow,.section-kicker{color:var(--accent-2);font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;font-weight:800;margin-bottom:10px}.hero h1{font-size:clamp(2.65rem,5vw,5rem);line-height:1;margin-bottom:16px;letter-spacing:0}.hero h1 span{display:block;color:var(--accent);font-size:.42em;line-height:1.15;margin-bottom:4px}.hero p{font-size:clamp(.98rem,1.55vw,1.14rem);max-width:520px;color:var(--text-soft)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.btn-primary,.btn-ghost{min-height:44px;border-radius:8px;font-weight:800;font-size:.9rem;padding:11px 18px;transition:transform .18s,box-shadow .18s,border-color .18s}.btn-primary{background:linear-gradient(135deg,var(--accent),#ff7a59);color:#15100a;border:none;box-shadow:0 15px 30px #ff7a592e}.btn-ghost{background:#ffffff0e;color:var(--text);border:1px solid var(--border-strong)}.btn-primary:hover,.btn-ghost:hover{transform:translateY(-2px)}.hero-media{position:relative;width:100%;aspect-ratio:16 / 9;min-height:320px;overflow:hidden;border-radius:8px;background:#06101b;border:1px solid rgba(255,255,255,.12);box-shadow:0 24px 70px #00000057}.hero-media img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.hero-media:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,transparent 68%,rgba(6,16,27,.72)),linear-gradient(90deg,rgba(6,16,27,.1),transparent 34%);pointer-events:none}.hero-lesson-card{position:absolute;left:18px;bottom:16px;z-index:3;max-width:340px;text-shadow:0 3px 22px rgba(0,0,0,.88)}.hero-lesson-card span{display:block;color:var(--accent);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;font-weight:900;margin-bottom:6px}.hero-lesson-card strong{display:block;color:var(--text);line-height:1.35}.hero-lab{position:relative;min-height:410px;border:1px solid rgba(255,255,255,.1);border-radius:8px;overflow:hidden;background:linear-gradient(180deg,#121927f0,#0a0d13f5),#101521;box-shadow:0 30px 90px #0000005c}.lab-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:34px 34px;-webkit-mask-image:linear-gradient(180deg,#000,transparent 92%);mask-image:linear-gradient(180deg,#000,transparent 92%)}.board-label{position:absolute;left:24px;top:22px;color:var(--text-soft);font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.hero-road{position:absolute;left:42px;right:42px;bottom:62px;height:74px;border-bottom:3px solid rgba(255,255,255,.18)}.road-car{position:absolute;left:16px;bottom:12px;width:74px;height:30px;border-radius:8px 18px 6px 6px;background:linear-gradient(135deg,var(--accent),#ff7a59);box-shadow:0 12px 24px #ffb0202e}.road-car:before,.road-car:after{content:"";position:absolute;bottom:-8px;width:16px;height:16px;border-radius:50%;background:#0a0d13;border:3px solid var(--text-soft)}.road-car:before{left:10px}.road-car:after{right:10px}.road-arrow{position:absolute;left:120px;right:28px;bottom:31px;height:3px;background:var(--accent-2)}.road-arrow:after{content:"";position:absolute;right:-1px;top:-7px;border-left:14px solid var(--accent-2);border-top:8px solid transparent;border-bottom:8px solid transparent}.hero-road strong{position:absolute;right:0;bottom:42px;color:var(--accent-2);font-family:var(--font-display);font-size:1.4rem}.hero-projectile{position:absolute;left:48px;right:48px;top:82px;height:150px}.projectile-arc{position:absolute;left:0;right:10px;bottom:0;height:126px;border-top:4px solid var(--accent);border-radius:50% 50% 0 0}.projectile-ball{position:absolute;left:53%;top:-1px;width:18px;height:18px;border-radius:50%;background:var(--accent);box-shadow:0 0 18px #ffb020b8}.hero-graph{position:absolute;right:34px;top:48px;width:118px;height:82px;border-left:2px solid rgba(255,255,255,.28);border-bottom:2px solid rgba(255,255,255,.28)}.hero-graph span{position:absolute;left:10px;right:8px;bottom:10px;height:42px;border-top:3px solid var(--accent-2);transform:rotate(-12deg)}.hero-graph i{position:absolute;right:18px;top:18px;width:8px;height:8px;border-radius:50%;background:var(--accent-2)}.formula-chip{position:absolute;padding:10px 12px;border-radius:8px;background:#ffffff17;border:1px solid rgba(255,255,255,.14);color:var(--text);font-family:var(--font-display);font-size:.86rem;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.chip-one{top:226px;left:38px}.chip-two{right:34px;top:164px}.chip-three{left:132px;bottom:18px}.concept-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:70px}.concept-strip>div{min-height:142px;padding:18px;border-radius:8px;background:#ffffff10;border:1px solid rgba(255,255,255,.1)}.concept-strip span{display:block;color:var(--accent);font-size:.75rem;font-weight:900;margin-bottom:18px}.concept-strip strong{display:block;font-family:var(--font-display);font-size:1.05rem;margin-bottom:6px}.concept-strip p{margin:0;font-size:.88rem}.section{position:relative;margin-bottom:82px;scroll-margin-top:26px;padding:30px;border-left:1px solid rgba(255,255,255,.1)}.section:before{content:"";position:absolute;left:-4px;top:36px;width:7px;height:54px;border-radius:999px;background:linear-gradient(var(--accent),var(--accent-2))}.section h2{font-size:clamp(1.8rem,3vw,2.75rem);margin-bottom:14px}.section h3,.subhead{font-family:var(--font-display);color:var(--text);font-size:clamp(1.25rem,2vw,1.65rem);margin:28px 0 14px}.section>p{max-width:760px;margin-bottom:22px;color:var(--text-soft)}.overview-section{padding-top:34px}.definition-stage{display:grid;grid-template-columns:minmax(320px,1fr) minmax(260px,.55fr);gap:16px;align-items:stretch;margin:22px 0}.motion-story{position:relative;min-height:250px;border-radius:8px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(135deg,#ffb0201a,#35d0ba12);background-size:32px 32px,32px 32px,auto;overflow:hidden}.motion-story:before{content:"Motion = position changing with time";position:absolute;left:18px;top:16px;color:var(--text-soft);font-size:.82rem;font-weight:900}.story-path{position:absolute;left:58px;right:58px;bottom:66px;height:124px;border-top:5px solid var(--accent);border-radius:50% 50% 0 0;filter:drop-shadow(0 0 16px rgba(255,176,32,.38))}.story-dot{position:absolute;z-index:2;width:22px;height:22px;border-radius:50%;background:var(--accent);box-shadow:0 0 18px #ffb02099}.story-dot:after{position:absolute;top:28px;left:50%;transform:translate(-50%);color:var(--text-soft);font-size:.72rem;font-weight:900}.story-one{left:12%;bottom:58px}.story-one:after{content:"t1"}.story-two{left:48%;top:60px}.story-two:after{content:"t2"}.story-three{right:12%;bottom:58px}.story-three:after{content:"t3"}.motion-questions{display:grid;gap:10px}.motion-questions div,.application-grid div{min-height:76px;padding:14px;border-radius:8px;background:#ffffff0f;border:1px solid rgba(255,255,255,.11)}.motion-questions strong,.application-grid strong{display:block;color:var(--text);line-height:1.35}.motion-questions span,.application-grid span{display:block;color:var(--accent-2);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;font-weight:900;margin-bottom:6px}.application-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:12px 0 20px}.applications-section{padding-bottom:38px}.applications-section .summary-notes{grid-template-columns:repeat(3,minmax(0,1fr));max-width:none}.facts-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:14px 0 22px}.fact-card{min-height:330px;display:flex;flex-direction:column;gap:10px;padding:16px;border-radius:8px;background:linear-gradient(180deg,#35d0ba14,#ffb0200b),#ffffff0b;border:1px solid rgba(255,255,255,.12);transition:transform .18s,border-color .18s}.fact-card:hover{transform:translateY(-3px);border-color:#ffb0206b}.fact-art{min-height:154px;display:grid;place-items:center;border-radius:8px;background:radial-gradient(circle at 50% 42%,rgba(255,176,32,.1),transparent 44%),linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),#040a118a;background-size:auto,22px 22px,22px 22px,auto;border:1px solid rgba(255,255,255,.08)}.fact-art svg{width:100%;max-width:220px;height:auto}.fact-card>span{color:var(--accent);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;font-weight:900}.fact-card h3{margin:0;color:var(--text);font-family:var(--font-display);font-size:1.18rem}.fact-card p{margin:0;color:var(--text-soft);font-size:.9rem}.fact-solid{fill:var(--accent);filter:drop-shadow(0 0 10px rgba(255,176,32,.38))}.fact-flame{fill:#ff5d6c;opacity:.9}.fact-trail,.fact-path{fill:none;stroke:var(--accent);stroke-width:5;stroke-linecap:round}.fact-trail{stroke:#35d0ba61;stroke-dasharray:7 7}.fact-arrow{stroke:var(--accent-2);stroke-width:5;stroke-linecap:round;marker-end:url(#fact-arrow)}.fact-ground,.fact-stop{stroke:#e7ebf361;stroke-width:4;stroke-linecap:round}.fact-dot{fill:var(--accent);filter:drop-shadow(0 0 9px rgba(255,176,32,.5))}.fact-dot.muted{fill:#ffb0206b;filter:none}.fact-wheel{fill:#07101a;stroke:var(--text-soft);stroke-width:4}.fact-screen{fill:#35d0ba14;stroke:#e7ebf359;stroke-width:4}.fact-arm,.fact-claw{stroke:var(--accent-2);stroke-width:7;stroke-linecap:round}.fact-claw{stroke-width:5}.fact-joint{fill:#08111c;stroke:var(--accent);stroke-width:5}.fact-art text{fill:var(--text-soft);font-size:10px;font-weight:900}.storyboard{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0}.story-card{min-height:292px;display:flex;flex-direction:column;gap:14px;padding:16px;border-radius:8px;background:linear-gradient(180deg,#ffffff13,#ffffff09),#0a0d1375;border:1px solid rgba(255,255,255,.12)}.story-art{min-height:154px;display:grid;place-items:center;border-radius:8px;background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),#040a118a;background-size:22px 22px,22px 22px,auto;border:1px solid rgba(255,255,255,.08)}.story-art svg{width:100%;max-width:240px;height:auto}.story-art .axis{stroke:#e7ebf361;stroke-width:3;stroke-linecap:round}.story-art .dot{fill:var(--accent);filter:drop-shadow(0 0 9px rgba(255,176,32,.55))}.story-art .dot.muted{fill:#ffb02061;filter:none}.story-art .path-soft{fill:none;stroke:#35d0ba80;stroke-width:3;stroke-dasharray:7 7;stroke-linecap:round}.story-art .path-bright{fill:none;stroke:var(--accent);stroke-width:5;stroke-linecap:round}.story-art .area-fill{fill:#35d0ba38}.story-art .arrow{stroke-width:5;stroke-linecap:round}.story-art .arrow.teal{stroke:var(--accent-2);marker-end:url(#arrow-teal)}.story-art .arrow.orange{stroke:var(--accent);marker-end:url(#arrow-orange)}.story-art .arrow.red{stroke:var(--danger);marker-end:url(#arrow-red)}.story-art text{fill:var(--text-soft);font-size:11px;font-weight:800}.story-card span{display:block;color:var(--accent-2);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:900;margin-bottom:6px}.story-card h3{margin:0 0 6px;color:var(--text);font-family:var(--font-display);font-size:1.18rem}.story-card p{margin:0;color:var(--text-soft);font-size:.9rem;line-height:1.55}.lesson-visual{margin:18px 0 20px;border-radius:8px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),#ffffff0b;background-size:28px 28px,28px 28px,auto}.distance-visual{display:grid;grid-template-columns:minmax(280px,1fr) minmax(220px,.48fr);gap:18px;align-items:center;padding:18px}.path-map{position:relative;min-height:210px}.marker{position:absolute;z-index:2;min-width:54px;padding:7px 9px;border-radius:8px;background:#0a0d13db;border:1px solid rgba(255,255,255,.16);color:var(--text);font-size:.76rem;font-weight:900;text-align:center}.marker:before{content:"";position:absolute;left:50%;bottom:-14px;width:12px;height:12px;border-radius:50%;background:var(--accent);transform:translate(-50%)}.marker.start{left:8%;bottom:24px}.marker.turn{left:42%;top:22px}.marker.end{right:10%;bottom:24px}.walk,.straight-vector{position:absolute;height:4px;transform-origin:left center;border-radius:999px}.walk{background:repeating-linear-gradient(90deg,var(--accent) 0 12px,transparent 12px 20px)}.walk-one{left:18%;bottom:64px;width:210px;transform:rotate(-38deg)}.walk-two{left:46%;top:81px;width:218px;transform:rotate(35deg)}.straight-vector{left:18%;bottom:42px;width:65%;background:var(--accent-2)}.straight-vector:after,.split-arc:after,.vx-arrow:after,.vy-arrow:after{content:"";position:absolute;right:-1px;top:-6px;border-left:12px solid currentColor;border-top:7px solid transparent;border-bottom:7px solid transparent}.straight-vector:after{color:var(--accent-2)}.visual-note{padding:16px;border-radius:8px;background:#0a0d138f;border:1px solid rgba(255,255,255,.1)}.visual-note strong,.visual-note span{display:block}.visual-note strong{color:var(--text);margin-bottom:8px}.visual-note span{color:var(--text-soft);font-size:.9rem;line-height:1.55}.suvat-visual{display:grid;grid-template-columns:repeat(5,minmax(96px,1fr));gap:10px;padding:14px}.variable-tile{min-height:108px;display:flex;flex-direction:column;justify-content:center;gap:6px;padding:14px;border-radius:8px;background:#0a0d138f;border:1px solid rgba(255,255,255,.11);text-align:center}.variable-tile strong{color:var(--accent);font-family:var(--font-display);font-size:2rem}.variable-tile span{color:var(--text-soft);font-size:.78rem;line-height:1.3}.graph-meaning{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:14px;padding:14px}.graph-meaning>div{display:grid;grid-template-columns:112px 1fr;gap:14px;align-items:center;min-height:126px;padding:14px;border-radius:8px;background:#0a0d138f;border:1px solid rgba(255,255,255,.11)}.graph-meaning strong{display:block;color:var(--text);margin-bottom:5px}.graph-meaning p{margin:0;font-size:.86rem}.mini-graph{position:relative;display:block;width:112px;height:82px;border-left:2px solid rgba(255,255,255,.32);border-bottom:2px solid rgba(255,255,255,.32)}.mini-graph:before{content:"";position:absolute;left:12px;right:12px;bottom:14px;height:40px;border-top:3px solid var(--accent);transform:rotate(-14deg)}.slope-graph i{position:absolute;left:58px;top:16px;width:48px;height:3px;background:var(--accent-2);transform:rotate(45deg)}.area-graph i{position:absolute;left:16px;right:14px;bottom:3px;height:38px;background:linear-gradient(180deg,#35d0ba6b,#35d0ba0f);clip-path:polygon(0 100%,100% 30%,100% 100%)}.projectile-split{padding:16px}.split-scene{position:relative;min-height:220px;overflow:hidden}.split-scene:before{content:"";position:absolute;left:28px;right:28px;bottom:34px;height:2px;background:#ffffff2e}.split-ball{position:absolute;left:42%;top:34px;width:20px;height:20px;border-radius:50%;background:var(--accent);box-shadow:0 0 18px #ffb020a6}.split-arc{position:absolute;left:48px;right:48px;bottom:34px;height:150px;border-top:4px solid var(--accent);border-radius:50% 50% 0 0}.vx-arrow,.vy-arrow{position:absolute;color:var(--accent-2);font-size:.82rem;font-weight:900}.vx-arrow{left:42%;top:70px;width:230px;border-top:3px solid var(--accent-2);padding-top:10px}.vy-arrow{left:calc(42% + 9px);top:62px;height:108px;width:170px;border-left:3px solid var(--danger);color:var(--danger);padding-left:12px;padding-top:74px}.vy-arrow:after{right:auto;left:-8px;top:auto;bottom:-1px;transform:rotate(90deg);color:var(--danger)}.callout{position:relative;border-radius:8px;border:1px solid var(--border);background:linear-gradient(135deg,#fff1,#ffffff09);padding:18px 20px;margin:16px 0;overflow:hidden}.callout:before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--border)}.callout-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:900;margin-bottom:8px}.callout-definition:before{background:var(--accent-2)}.callout-definition .callout-label{color:var(--accent-2)}.callout-formula:before{background:var(--accent)}.callout-formula .callout-label{color:var(--accent)}.callout-tip:before{background:var(--success)}.callout-tip .callout-label{color:var(--success)}.callout-misconception:before{background:var(--danger)}.callout-misconception .callout-label{color:var(--danger)}.callout-body{color:var(--text);font-size:.95rem;line-height:1.7}.katex-display{margin:.65em 0}.worked-example{margin-top:22px;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#ffffff09}.we-step{border-bottom:1px solid var(--border)}.we-step:last-child{border-bottom:none}.we-header{width:100%;min-height:56px;display:flex;align-items:center;gap:12px;background:#ffffff0b;border:none;color:var(--text);padding:15px 18px;font-size:.94rem;font-weight:800}.we-header:hover{background:#ffffff13}.we-num{width:28px;height:28px;border-radius:8px;background:var(--accent-dim);color:var(--accent);display:grid;place-items:center;font-size:.76rem;font-weight:900;flex-shrink:0}.we-body{padding:16px 18px 22px 58px;color:var(--text-dim);font-size:.92rem;animation:fadeIn .28s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.sim-card,.graphs-card{background:linear-gradient(180deg,#ffffff13,#ffffff0a);border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:clamp(14px,2vw,20px);margin-top:18px;box-shadow:0 24px 60px #00000038}.sim-canvas-wrap{position:relative;background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(180deg,#101827,#0c1018);background-size:30px 30px,30px 30px,auto;border-radius:8px;overflow:hidden;border:1px solid rgba(255,255,255,.09)}.sim-canvas-wrap canvas{display:block;width:100%;height:auto;cursor:crosshair}.sim-hint{position:absolute;bottom:12px;left:50%;transform:translate(-50%);width:max-content;max-width:calc(100% - 24px);font-size:.78rem;color:var(--text);background:#00000094;border:1px solid rgba(255,255,255,.1);padding:7px 12px;border-radius:8px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.sim-controls,.graphs-controls{display:grid;grid-template-columns:repeat(2,minmax(180px,1fr)) auto;gap:18px;align-items:end;margin-top:18px}.graphs-controls{grid-template-columns:repeat(2,minmax(180px,1fr));margin-top:0;margin-bottom:18px}.sim-controls label,.graphs-controls label{display:flex;flex-direction:column;gap:9px;font-size:.84rem;color:var(--text-dim);font-weight:700}.sim-controls input[type=range],.graphs-controls input[type=range]{width:100%;accent-color:var(--accent)}.graphs-controls input[type=range]{accent-color:var(--accent-2)}.sim-launch{min-width:116px;box-shadow:0 0 0 1px #ffb0202e,0 16px 34px #ffb02033}.sim-presets{display:grid;grid-template-columns:minmax(190px,.42fr) minmax(0,1fr);gap:14px;align-items:stretch;margin-top:18px;padding:14px;border-radius:8px;background:linear-gradient(135deg,#ffb0202e,#35d0ba14),#0a0d1380;border:1px solid rgba(255,176,32,.26);box-shadow:inset 0 0 0 1px #ffffff0a}.preset-intro{display:flex;flex-direction:column;justify-content:center;gap:6px;padding:12px;border-radius:8px;background:#0a0d137a}.preset-intro span{color:var(--accent);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;font-weight:900}.preset-intro strong{color:var(--text);font-family:var(--font-display);line-height:1.3}.preset-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.preset-card{min-height:98px;display:flex;flex-direction:column;justify-content:center;gap:5px;text-align:left;padding:12px;border-radius:8px;border:1px solid rgba(255,255,255,.12);background:#06101b94;color:var(--text);transition:transform .16s,border-color .16s,background .16s}.preset-card:hover{transform:translateY(-2px);border-color:#ffb02080}.preset-card.active{background:#ffb02024;border-color:var(--accent);box-shadow:0 0 0 1px #ffb02029}.preset-card span{font-weight:900}.preset-card strong{color:var(--accent-2);font-size:.86rem}.preset-card em{color:var(--text-muted);font-style:normal;font-size:.76rem}.sim-readout{display:grid;grid-template-columns:repeat(4,minmax(130px,1fr));gap:12px;margin-top:18px}.sim-readout div{min-height:78px;display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px;border-radius:8px;background:#ffffff0f;border:1px solid rgba(255,255,255,.1)}.sim-readout span{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-weight:800}.sim-readout strong{font-size:1.2rem;color:var(--accent)}.graphs-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.graph-panel{background:#0a0d1399;border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:12px;min-width:0}.graph-title{font-size:.78rem;color:var(--text);margin-bottom:8px;font-weight:900;letter-spacing:.02em}.graphs-note{font-size:.84rem;color:var(--text-dim);margin:14px 0 0}.terminal-visual{position:relative;min-height:260px;margin:18px 0;border-radius:8px;border:1px solid rgba(255,255,255,.11);background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),radial-gradient(circle at 24% 26%,rgba(255,176,32,.14),transparent 24%),linear-gradient(90deg,rgba(53,208,186,.12),transparent 58%),linear-gradient(180deg,#ffffff0f,#ffffff06);background-size:28px 28px,28px 28px,auto,auto,auto;overflow:hidden}.fall-track{position:absolute;left:clamp(46px,12vw,120px);top:24px;bottom:52px;width:190px}.fall-track:before{content:"";position:absolute;left:74px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,#ffffff42,#ffffff0a)}.ghost-ball,.falling-body{position:absolute;left:58px;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#ff7a59)}.falling-body{top:10px;box-shadow:0 0 30px #ffb02061;animation:fallPreview 2.7s cubic-bezier(.3,.05,.2,1) infinite}.falling-body:before,.falling-body:after{content:"";position:absolute;left:50%;transform:translate(-50%);border-left:13px solid transparent;border-right:13px solid transparent}.falling-body:before{top:-28px;border-bottom:24px solid rgba(255,93,108,.72)}.falling-body:after{bottom:-32px;width:3px;height:28px;border:none;border-radius:999px;background:linear-gradient(var(--accent),transparent)}.ghost-ball{opacity:.22;box-shadow:0 0 16px #ffb0203d}.ghost-one{top:8px;transform:scale(.78)}.ghost-two{top:48px;transform:scale(.86);opacity:.3}.ghost-three{top:118px;transform:scale(.94);opacity:.38}.ghost-four{bottom:8px;transform:scale(1);opacity:.5}.fall-streak{position:absolute;left:102px;width:80px;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--accent-2),transparent);opacity:.72;animation:airPulse 1.25s ease-in-out infinite}.streak-one{top:58px;width:70px;animation-delay:0s}.streak-two{top:112px;width:116px;animation-delay:.18s}.streak-three{top:174px;width:150px;animation-delay:.36s}@keyframes fallPreview{0%{transform:translateY(0) scale(.88);opacity:0}12%{opacity:1}48%{transform:translateY(98px) scale(.98)}76%{transform:translateY(164px) scale(1)}to{transform:translateY(168px) scale(1);opacity:1}}@keyframes airPulse{0%,to{transform:translate(0);opacity:.35}50%{transform:translate(12px);opacity:.9}}.drag-lines{position:absolute;left:clamp(250px,38vw,430px);top:54px;display:grid;gap:28px}.drag-lines i{position:relative;display:block;width:180px;height:3px;background:linear-gradient(90deg,transparent,var(--accent-2));animation:dragGrow 2.7s ease-in-out infinite}.drag-lines i:before{content:"";position:absolute;left:-2px;top:-7px;border-right:13px solid var(--accent-2);border-top:8px solid transparent;border-bottom:8px solid transparent}.drag-lines i:nth-child(1){width:120px;opacity:.52}.drag-lines i:nth-child(2){width:190px;opacity:.72;animation-delay:.1s}.drag-lines i:nth-child(3){width:260px;opacity:.92;animation-delay:.2s}@keyframes dragGrow{0%,18%{transform:scaleX(.62)}64%,to{transform:scaleX(1)}}.terminal-axis{position:absolute;left:clamp(46px,12vw,120px);right:32px;bottom:28px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;border-top:2px solid rgba(255,255,255,.18)}.terminal-axis span,.terminal-axis strong{color:var(--text-dim);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}.terminal-axis strong{color:var(--accent-2)}.quiz{display:grid;gap:18px}.quiz-q{padding:18px;border-radius:8px;background:#ffffff0e;border:1px solid rgba(255,255,255,.1)}.quiz-prompt{font-size:.96rem;margin-bottom:12px;color:var(--text);font-weight:800}.quiz-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quiz-option{min-height:44px;text-align:left;background:#0a0d1380;border:1px solid var(--border);color:var(--text);padding:11px 13px;border-radius:8px;font-size:.88rem;transition:transform .12s,border-color .12s,background .12s}.quiz-option:hover{border-color:var(--accent);transform:translateY(-1px)}.quiz-option.correct{border-color:var(--success);background:#4ade8021;animation:pulse .3s}.quiz-option.incorrect{border-color:var(--danger);background:#ff5d6c21;animation:shake .3s}.quiz-explain{margin-top:12px;font-size:.86rem;color:var(--text-soft);background:#0a0d138f;padding:12px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.08)}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.015)}to{transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}@media (max-width: 980px){.app{flex-direction:column}.sidebar{width:100%;height:auto;position:sticky;z-index:5;border-right:none;border-bottom:1px solid var(--border);padding:12px 14px}.sidebar.collapsed{width:100%;padding:12px 14px}.sidebar-title{margin-bottom:12px}.sidebar.collapsed .sidebar-title{justify-content:flex-start;margin-bottom:12px}.sidebar.collapsed .sidebar-brand-copy,.sidebar.collapsed .nav-label{opacity:1;pointer-events:auto;position:static;transform:none}.sidebar-toggle{display:none}.sidebar ul{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}.nav-item{width:max-content;min-width:116px}.sidebar.collapsed .nav-item{justify-content:flex-start;gap:10px;padding:9px 10px}.hero{grid-template-columns:1fr;padding:20px;gap:20px}.hero h1{font-size:clamp(2.8rem,9vw,4.6rem)}.hero-copy{left:auto;top:auto;width:100%}.hero-media{min-height:0;max-height:520px}.concept-strip{grid-template-columns:1fr}.section{padding:24px 0 24px 22px}.graphs-grid,.sim-controls,.sim-presets{grid-template-columns:1fr}.sim-readout{grid-template-columns:repeat(2,minmax(130px,1fr))}.distance-visual,.graph-meaning,.definition-stage{grid-template-columns:1fr}.storyboard,.facts-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.suvat-visual{grid-template-columns:repeat(2,minmax(110px,1fr))}.application-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.applications-section .summary-notes{grid-template-columns:1fr}}@media (max-width: 620px){.content{--page-pad: 18px;padding:24px 18px 80px}.hero{padding:14px;margin-bottom:46px;gap:16px}.hero-copy{left:auto;right:auto;top:auto;width:auto}.hero h1{font-size:clamp(2.55rem,15vw,4rem)}.hero p{font-size:.98rem}.hero-media{aspect-ratio:16 / 10}.hero-media img{object-fit:cover;object-position:34% center}.hero-actions,.hero-actions button{width:100%}.hero-lesson-card{left:12px;right:12px;bottom:12px;max-width:none;padding-top:32px}.hero-lesson-card strong{font-size:.9rem}.hero-road{left:24px;right:24px;bottom:44px}.hero-projectile{left:28px;right:28px;top:74px;height:120px}.projectile-arc{height:100px}.hero-graph{display:none}.formula-chip{font-size:.74rem}.chip-one{left:18px;top:202px}.chip-two{right:16px;top:36px}.chip-three{left:auto;right:16px;bottom:8px}.concept-strip>div{min-height:118px}.motion-story{min-height:220px}.story-path{left:32px;right:32px;height:100px}.application-grid,.storyboard{grid-template-columns:1fr}.story-card{min-height:0}.facts-grid{grid-template-columns:1fr}.fact-card{min-height:0}.fact-art,.story-art{min-height:132px}.path-map{min-height:190px}.walk-one{width:145px}.walk-two{width:150px}.suvat-visual{grid-template-columns:1fr}.graph-meaning>div{grid-template-columns:1fr}.split-scene{min-height:250px}.vx-arrow{left:22%;top:82px;width:190px}.vy-arrow{left:calc(22% + 8px);top:76px}.quiz-options,.sim-readout,.preset-buttons{grid-template-columns:1fr}.terminal-axis{left:24px;right:20px;align-items:flex-start;flex-direction:column}.terminal-visual{min-height:320px}.fall-track{left:24px;top:24px;bottom:88px;width:150px}.drag-lines{left:168px;top:58px;gap:34px}.drag-lines i:nth-child(1){width:70px}.drag-lines i:nth-child(2){width:98px}.drag-lines i:nth-child(3){width:126px}}@media (prefers-reduced-motion: reduce){.falling-body,.fall-streak,.drag-lines i{animation:none}}:root{--bg: #090d13;--bg-elevated: #111824;--bg-card: #161f2d;--border: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .18);--text: #e7ebf3;--text-dim: #8b93a7;--text-muted: #677084;--text-soft: #b7bfd0;--accent: #ffb020;--accent-dim: #ffb02033;--accent-2: #35d0ba;--danger: #ff5d6c;--success: #4ade80;--radius: 14px;--font-display: "Space Grotesk", sans-serif;--font-body: "Inter", sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased}h1,h2,h3,h4{font-family:var(--font-display);margin:0}p{line-height:1.65;color:var(--text-dim)}button{font-family:inherit;cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}