.ss{--ss-ink: #1a1a1a;--ss-soft: #5f6368;--ss-hair: #c9ccd1;--ss-gap: 1.05em;box-sizing:border-box;width:794px;min-height:1123px;padding:0 60px;background:#fff;color:var(--ss-ink);font-family:KaTeX_Main,Latin Modern Roman,"CMU Serif",Times New Roman,serif;line-height:1.5;text-rendering:optimizeLegibility;font-variant-numeric:lining-nums;box-shadow:0 1px #12213b0f,0 18px 40px -18px #12213b59;position:relative;overflow:hidden}.ss.ss-airy{--ss-gap: 1.6em}.ss.ss-tight{--ss-gap: .65em;line-height:1.4}.ss-frame{width:100%;border-collapse:collapse}.ss-frame>*>tr>td{padding:0}.ss-page-top{height:54px}.ss-page-foot{height:46px;display:flex;align-items:center;justify-content:center;font-size:.66em;letter-spacing:.22em;text-transform:uppercase;color:#b3b7bd}.ss-mast{text-align:center;margin-bottom:1.6em}.ss-mast-line{display:flex;justify-content:space-between;align-items:baseline;font-size:.72em;letter-spacing:.14em;text-transform:uppercase;color:var(--ss-soft);padding-bottom:.55em;border-bottom:.6px solid var(--ss-ink)}.ss-brand{color:var(--ss-ink);font-weight:700;letter-spacing:.3em}.ss-title{font-family:inherit;font-weight:400;font-size:1.9em;line-height:1.15;margin:.55em 0 .2em;letter-spacing:.01em;color:var(--ss-ink)}.ss-facts{font-style:italic;font-size:.88em;color:var(--ss-soft);padding-bottom:.9em;border-bottom:3px double var(--ss-ink);white-space:pre-wrap}.ss-fields{display:flex;gap:1.6em;margin-top:1.1em;font-size:.84em;color:var(--ss-soft);text-align:left}.ss-fields span{border-bottom:.6px solid var(--ss-soft);padding-bottom:.15em}.ss-two_col .ss-body,.ss-compact .ss-body{column-count:2;column-gap:2.2em;column-rule:.6px solid var(--ss-hair)}.ss-q{display:grid;grid-template-columns:2.1em minmax(0,1fr);margin-bottom:var(--ss-gap);break-inside:avoid;page-break-inside:avoid}.ss-qn{font-weight:700}.ss-qbody{min-width:0;display:flow-root}.ss-stem{white-space:pre-wrap}.ss .katex-display{overflow:hidden}.ss-qbody{overflow-wrap:anywhere}.ss-qbody table{overflow-wrap:normal;word-break:normal}.ss-two_col .q-table,.ss-compact .q-table{font-size:.85em}.ss-two_col .q-table :is(td,th),.ss-compact .q-table :is(td,th){padding:.25em .35em}.ss-stem p{margin:0 0 .4em}.ss-meta{font-size:.74em;font-style:italic;color:var(--ss-soft);letter-spacing:.02em;margin-bottom:.15em}.ss-passage{display:block;margin-bottom:.6em;padding:.5em .8em;border-left:1.5px solid var(--ss-hair);font-size:.95em;white-space:pre-wrap}.ss-para{margin:.4em 0 .2em;break-inside:avoid}.ss-para-label{font-size:.78em;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ss-ink);margin-bottom:.3em}.ss-group{display:flex;align-items:center;gap:.8em;margin:calc(var(--ss-gap) * 1.2) 0 calc(var(--ss-gap) * .9);font-size:.78em;letter-spacing:.18em;text-transform:uppercase;color:var(--ss-ink);break-after:avoid;column-span:none}.ss-group:before,.ss-group:after{content:"";flex:1 0 1.5em;border-top:.6px solid var(--ss-hair)}.ss-group>span{max-width:78%;text-align:center;line-height:1.5}.ss-q.ss-q-long{break-inside:auto;page-break-inside:auto}.ss-q-long .ss-stem{orphans:3;widows:3}.ss-opt,.ss-figs,.ss-gallery,.ss .q-table-wrap,.ss-q .ss-opts{break-inside:avoid}.ss-opts{display:grid;column-gap:1.4em;row-gap:.2em;margin-top:.35em}.ss-opt{display:grid;grid-template-columns:2em minmax(0,1fr);align-items:baseline;min-width:0}.ss-opt>b{font-weight:400}.ss-opts-pic{row-gap:.6em}.ss .q-figure{display:block;width:auto;max-width:100%;height:auto;max-height:9em;margin:0;border:0;padding:0;object-fit:contain;cursor:default}.ss .ss-figs{display:flex;flex-direction:column;align-items:center;gap:.5em;margin:.4em 0 .5em}.ss .ss-figs-side{float:right;max-width:38%;margin:.15em 0 .5em 1.4em}.ss-qbody:has(>.ss-figs-wide){display:flex;flex-direction:column}.ss-qbody:has(>.ss-figs-wide)>*{order:2}.ss-qbody:has(>.ss-figs-wide)>.ss-meta,.ss-qbody:has(>.ss-figs-wide)>.ss-passage,.ss-qbody:has(>.ss-figs-wide)>.ss-stem{order:0}.ss .ss-figs.ss-figs-wide{order:1;float:none;max-width:82%;align-self:center;margin:.5em 0}.ss .ss-stem-figs .q-figure{display:inline-block;vertical-align:middle;height:5em;max-height:none;margin:.2em .8em .2em 0}.ss-gallery{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:.8em 1.8em;margin:.5em 0 .4em}.ss-gallery figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:.2em}.ss .ss-gallery .q-figure{max-height:6.5em;max-width:12em}.ss-gallery figcaption{font-size:.9em}.ss .sopt-pic{display:grid;grid-template-columns:2em minmax(0,1fr);align-items:start;break-inside:avoid}.ss .sopt-pic .q-figure{max-height:6em}.ss .q-table-wrap{overflow:visible;margin:.5em 0}.ss .q-table{width:100%;min-width:0;font-size:.92em;border-collapse:collapse}.ss .q-table th,.ss .q-table td{border:.6px solid var(--ss-hair);padding:.3em .5em;background:none}.ss .q-table th{font-weight:700}.ss-lines div{border-bottom:.6px solid var(--ss-hair);height:1.7em}.ss-box{border:.6px solid var(--ss-hair);height:4.5em;margin-top:.4em}.ss-omr{display:flex;gap:.35em;margin-top:.4em}.ss-omr span{width:1.35em;height:1.35em;border-radius:50%;border:.6px solid var(--ss-soft);display:flex;align-items:center;justify-content:center;font-size:.66em;color:var(--ss-soft)}.ss-section{margin-top:2em}.ss-section-title{break-after:avoid}.ss-key{break-inside:avoid}.ss-section-title{display:flex;align-items:center;gap:.9em;font-family:inherit;font-weight:400;font-size:.86em;letter-spacing:.24em;text-transform:uppercase;margin:0 0 1em}.ss-section-title:before,.ss-section-title:after{content:"";flex:1;border-top:.6px solid var(--ss-ink)}.ss-key{display:grid;grid-template-columns:repeat(auto-fill,minmax(7.4em,1fr));border-top:.6px solid var(--ss-hair);border-left:.6px solid var(--ss-hair);font-size:.9em}.ss-key>div{display:flex;gap:.6em;align-items:baseline;padding:.3em .6em;border-right:.6px solid var(--ss-hair);border-bottom:.6px solid var(--ss-hair);break-inside:avoid}.ss-key-n{font-weight:700;min-width:1.4em}.ss-tear{border-top:1px dashed var(--ss-soft);padding-top:.3em;margin-bottom:1.4em;font-size:.7em;letter-spacing:.14em;text-transform:uppercase;color:var(--ss-soft)}.ss-sols{list-style:none;margin:0;padding:0}.ss-sols>li{display:grid;grid-template-columns:2.1em minmax(0,1fr);margin-bottom:var(--ss-gap);break-inside:avoid}.ss-sols .ss-qbody{white-space:pre-wrap}.ss-sol-ans{margin-top:.25em;font-style:italic}.ss-sol-inline{clear:both;margin-top:.55em;padding-top:.4em;border-top:.6px dotted var(--ss-hair);font-size:.92em;color:#333;white-space:pre-wrap}.ss-sol-tag{font-style:italic;font-weight:700}.ss-muted{color:var(--ss-soft);font-style:italic}.ss-center{text-align:center}.ss.ss-mini{box-shadow:none}@media print{html,body{background:#fff!important}.ss{width:100%!important;min-height:0!important;padding:0 17mm!important;box-shadow:none!important;overflow:visible!important}.ss-page-top{height:15mm}.ss-page-foot{height:13mm}.ss-new-page,.ss-detach{break-before:page}.ss-detach .ss-tear{display:none}.ss .q-figure{max-height:9em}.ss .sopt-pic .q-figure{max-height:6em}}.ss .ss-src{font-family:Helvetica Neue,Arial,sans-serif;font-size:.68em;color:#8a8a8a;line-height:1.3;margin:.15em 0 .2em;letter-spacing:.01em}@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:"0.16.45"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{--paper: #fbfaf6;--paper-deeper: #f4f1ea;--ink: #1a1a1a;--ink-soft: #4a4a4a;--ink-mute: #888;--rule: #d4cfc1;--rule-soft: #e8e4d8;--primary: #1e40af;--primary-soft: #e0e7ff;--green: #15803d;--green-soft: #dcfce7;--amber: #a16207;--amber-soft: #fef9c3;--red: #b91c1c;--red-soft: #fee2e2}*{box-sizing:border-box}html,body,#root{margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:Cambria,Charter,Georgia,Times New Roman,serif;background:var(--paper);color:var(--ink);line-height:1.55;font-size:15px;min-height:100vh}button{font:inherit}.katex{font-size:1.12em}.katex-display{margin:.5em 0!important}.app-shell{padding-bottom:100px;min-height:100vh}.app-header{background:var(--paper);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:50;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top))}.app-header-row{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:8px}.app-header-left,.app-header-right{display:flex;align-items:center;gap:8px}.brand-btn{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;align-items:flex-start;padding:0;font-family:inherit}.brand{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.2px}.brand-sub{font-size:11px;color:var(--ink-soft);font-style:italic}.iconbtn{background:#fff;border:1px solid var(--rule);border-radius:50%;width:34px;height:34px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;color:var(--ink-soft);text-decoration:none;transition:border-color .12s,color .12s}.iconbtn:hover{border-color:var(--ink);color:var(--ink)}.back-btn{font-size:18px}.app-main{max-width:1100px;margin:0 auto;padding:14px}.btn{background:var(--ink);color:var(--paper);border:none;padding:9px 16px;border-radius:3px;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;letter-spacing:.3px;transition:background .15s,opacity .15s}.btn:hover:not(:disabled){background:var(--primary)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--rule)}.btn.secondary:hover:not(:disabled){border-color:var(--primary);color:var(--primary);background:#fff}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover:not(:disabled){background:#1e3a8a}.btn.danger{background:#fff;color:var(--red);border:1px solid var(--red-soft)}.btn.danger:hover:not(:disabled){background:var(--red-soft)}.btn.small{padding:6px 11px;font-size:12px}.page-intro{margin-bottom:14px}.page-intro h2{font-size:1.4rem;margin:0 0 4px;font-weight:700}.page-intro p{font-size:13px;color:var(--ink-soft);margin:0}.breadcrumb{display:flex;gap:6px;flex-wrap:wrap;font-size:12px;color:var(--ink-soft);margin-bottom:12px;font-family:ui-sans-serif,system-ui,sans-serif}.breadcrumb button{background:none;border:none;cursor:pointer;color:var(--primary);font-size:inherit;padding:0;font-family:inherit}.breadcrumb button:hover{text-decoration:underline}.chapter-grid{display:grid;gap:10px;grid-template-columns:1fr}@media (min-width: 600px){.chapter-grid{grid-template-columns:1fr 1fr}}@media (min-width: 1000px){.chapter-grid{grid-template-columns:1fr 1fr 1fr}}.chapter-card{background:#fff;border:1px solid var(--rule);padding:12px 14px;border-radius:3px;cursor:pointer;text-align:left;font-family:inherit;transition:border-color .12s,transform .12s,box-shadow .12s}.chapter-card:hover{border-color:var(--ink);transform:translateY(-1px);box-shadow:0 2px 6px #0000000f}.chapter-name{font-weight:700;font-size:15px;margin-bottom:2px}.chapter-meta{font-size:11px;color:var(--ink-soft);margin-bottom:6px;font-family:ui-sans-serif,system-ui,sans-serif}.chapter-bar{display:flex;height:5px;border-radius:3px;overflow:hidden;background:var(--paper-deeper);margin-bottom:4px}.chapter-bar>span{display:block;height:100%}.chapter-counts{display:flex;gap:8px;flex-wrap:wrap;font-size:11px;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif}.topic-list{display:flex;flex-direction:column;gap:6px}.topic-card{background:#fff;border:1px solid var(--rule);padding:10px 14px;border-radius:3px;cursor:pointer;text-align:left;font-family:inherit;display:flex;justify-content:space-between;align-items:center;transition:border-color .12s}.topic-card:hover{border-color:var(--ink)}.topic-card.all-questions{background:var(--primary-soft);border-color:var(--primary);margin-bottom:8px}.topic-card.all-questions .topic-name{color:var(--primary)}.topic-name{font-weight:600;font-size:14px}.topic-count{font-size:12px;color:var(--ink-soft);background:var(--paper-deeper);padding:2px 9px;border-radius:999px;font-family:ui-sans-serif,system-ui,sans-serif}.search-row{display:flex;gap:8px;margin-bottom:10px}.search-input{flex:1;min-width:0;padding:9px 12px;border:1px solid var(--rule);border-radius:3px;font-size:14px;font-family:inherit;background:#fff;-webkit-appearance:none}.search-input:focus{outline:2px solid var(--primary-soft);border-color:var(--primary)}.filter-row{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px;align-items:center}.filter-row-label{font-size:11px;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif;font-weight:700;letter-spacing:.4px;text-transform:uppercase;margin-right:4px}.chip{background:#fff;border:1px solid var(--rule);padding:5px 11px;border-radius:999px;cursor:pointer;font-size:11px;font-weight:600;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif;letter-spacing:.3px;transition:all .12s}.chip:hover{border-color:var(--ink);color:var(--ink)}.chip.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}.result-meta{display:flex;justify-content:space-between;align-items:center;margin:6px 0 12px;font-size:12px;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif}.cap-warn{color:var(--amber);font-weight:600;background:var(--amber-soft);padding:2px 8px;border-radius:4px}.pagination{display:flex;gap:4px;align-items:center;justify-content:center;margin:14px 0;flex-wrap:wrap}.page-btn{padding:6px 11px;border:1px solid var(--rule);background:#fff;border-radius:2px;cursor:pointer;font-size:12px;color:var(--ink-soft);font-family:inherit;min-width:34px}.page-btn:hover:not(:disabled){border-color:var(--ink);color:var(--ink)}.page-btn.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}.page-btn:disabled{opacity:.35;cursor:not-allowed}.page-ellipsis{color:var(--ink-soft);padding:0 4px}.question-card{background:#fff;border:1px solid var(--rule);padding:14px 16px 16px;margin-bottom:12px;border-radius:2px;position:relative}.question-card.is-selected{border-left:4px solid var(--green);box-shadow:0 0 0 1px var(--green-soft);background:linear-gradient(to right,#f0fdf4,#fff 60px)}.q-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--rule-soft);gap:10px;flex-wrap:wrap}.q-tags{display:flex;gap:5px;flex-wrap:wrap;align-items:center;font-family:ui-sans-serif,system-ui,sans-serif;flex:1;min-width:0}.q-actions-right{display:flex;gap:6px;align-items:center;flex-shrink:0}.tag{font-size:10px;padding:2px 7px;border-radius:2px;background:var(--paper-deeper);color:var(--ink-soft);font-weight:600;line-height:1.4;letter-spacing:.3px;text-transform:uppercase;border:none;font-family:inherit}.tag.clickable{cursor:pointer;transition:background .12s,color .12s}.tag.clickable:hover,.tag.type{background:var(--ink);color:var(--paper)}.tag.type.clickable:hover{background:var(--primary);color:#fff}.q-table-wrap{overflow-x:auto;margin:.75em 0}.q-table{border-collapse:collapse;width:auto;min-width:60%;font-size:.95em}.q-table th,.q-table td{border:1px solid var(--rule);padding:.4em .7em;text-align:left;vertical-align:middle}.q-table th{background:var(--paper-deeper);font-weight:600}.q-table tr:nth-child(2n) td{background:#00000004}.q-table td:empty,.q-table th:empty{padding:.4em .2em}.tag.concept{background:var(--paper);color:var(--muted, #8a8172);border:1px solid var(--rule)}.tag.concept.clickable:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}.tag.source{background:transparent;color:var(--ink-soft);border:1px solid var(--rule);font-weight:500;letter-spacing:0;text-transform:none}.tag.source.source-pyq{color:var(--ink);border-color:var(--ink-soft)}.tag.source.clickable:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}.tag.diff-L1,.tag.diff-L2{background:var(--green-soft);color:var(--green)}.tag.diff-L3{background:var(--amber-soft);color:var(--amber)}.tag.diff-L4{background:#fed7aa;color:#9a3412}.tag.diff-L5{background:var(--red-soft);color:var(--red)}.flag-btn{background:#fff;border:1px solid var(--rule);width:32px;height:32px;border-radius:3px;cursor:pointer;font-size:14px;color:var(--ink-soft);display:flex;align-items:center;justify-content:center;transition:all .12s}.flag-btn:hover{border-color:var(--red);color:var(--red);background:var(--red-soft)}.select-btn{background:#fff;border:1px solid var(--rule);color:var(--ink-soft);padding:6px 12px;border-radius:2px;cursor:pointer;font-size:11px;font-weight:700;letter-spacing:.4px;font-family:ui-sans-serif,system-ui,sans-serif;text-transform:uppercase;transition:all .12s}.select-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.select-btn.selected{background:var(--green);color:#fff;border-color:var(--green)}.select-btn.selected:hover{background:#166534;border-color:#166534}.select-btn:disabled{opacity:.35;cursor:not-allowed}.q-body{display:flex;gap:8px;align-items:flex-start}.q-num{font-weight:700;font-size:16px;color:var(--ink);min-width:36px;flex-shrink:0;font-family:Cambria,serif}.q-body-content{flex:1;min-width:0}.q-text{font-size:15px;line-height:1.7;color:var(--ink);margin-bottom:10px;white-space:pre-wrap;display:block}.q-blank{display:inline-block;width:4.5em;height:1em;border-bottom:1.5px solid currentColor;vertical-align:baseline;margin:0 .15em}.options-list{margin:10px 0 4px}.option{padding:4px 0 4px 6px;display:flex;gap:8px;align-items:flex-start;border-left:3px solid transparent;margin-bottom:2px;line-height:1.5}.option-letter{font-weight:700;color:var(--ink-soft);min-width:26px;flex-shrink:0;font-family:Cambria,serif}.option-text{flex:1;min-width:0;text-align:left}.reveal-row-inline{display:flex;gap:8px;margin:10px 0 0;font-family:ui-sans-serif,system-ui,sans-serif;flex-wrap:wrap}.reveal-btn{background:transparent;border:1px solid var(--rule);color:var(--ink-soft);padding:5px 11px;border-radius:2px;cursor:pointer;font-size:12px;font-weight:600;letter-spacing:.3px;font-family:inherit;transition:border-color .12s,color .12s}.reveal-btn:hover{border-color:var(--ink);color:var(--ink)}.reveal-btn.expanded{background:var(--paper-deeper)}.reveal-btn.ans-btn.expanded{border-color:var(--primary);color:var(--primary)}.reveal-btn.sol-btn.expanded{border-color:var(--amber);color:var(--amber)}.answer-box,.solution-box{margin:12px 0 4px;padding:9px 12px;font-size:14px;line-height:1.6;border-radius:2px}.answer-box{background:#eef2ff;border-left:3px solid var(--primary)}.solution-box{background:#fffbeb;border-left:3px solid var(--amber);white-space:pre-wrap}.filter-select{font:inherit;font-size:12px;padding:3px 6px;border:1px solid var(--rule);border-radius:3px;background:var(--paper);color:var(--ink);max-width:46%}.page-btn.page-btn-wide{width:auto;padding:0 12px}.page-current{align-self:center;padding:0 10px;font-size:13px;color:var(--ink-soft)}.reveal-note{font-size:12.5px;color:var(--ink-soft);margin:4px 0 6px}.box-label{font-family:ui-sans-serif,system-ui,sans-serif;font-size:9.5px;text-transform:uppercase;letter-spacing:1px;font-weight:700;margin-bottom:4px;display:block}.answer-box .box-label{color:var(--primary)}.solution-box .box-label{color:var(--amber)}.numeric-input{display:inline-block;padding:4px 14px;border:1px solid var(--rule);border-radius:2px;background:#fff;font-family:ui-monospace,monospace;min-width:110px;color:#aaa;font-size:13px;margin-top:4px}.matrix-table{margin:10px 0;border:1px solid var(--rule);border-collapse:collapse;width:100%;background:#fff;font-size:14px}.matrix-table th{background:var(--paper-deeper);font-family:ui-sans-serif,system-ui,sans-serif;font-size:11px;text-transform:uppercase;letter-spacing:.6px;font-weight:700;color:var(--ink-soft);padding:6px 9px;border:1px solid var(--rule);text-align:left}.matrix-table td{padding:7px 9px;border:1px solid var(--rule);vertical-align:top}.matrix-table .lbl-cell{font-weight:700;font-family:Cambria,serif;color:var(--ink-soft);width:1%;white-space:nowrap}.passage{background:var(--paper-deeper);border-left:4px solid var(--ink-soft);padding:10px 13px;margin:8px 0 14px;font-style:italic}.passage-label{font-family:ui-sans-serif,system-ui,sans-serif;font-size:9.5px;text-transform:uppercase;letter-spacing:1px;font-weight:700;color:var(--ink-soft);margin-bottom:5px;font-style:normal}.sub-q{border-left:2px solid var(--rule);padding:4px 0 4px 12px;margin:12px 0}.sub-q-header{font-weight:700;color:var(--ink);font-size:14px;margin-bottom:5px;font-family:Cambria,serif}.sub-q-header .roman{font-style:italic;margin-right:6px}.sub-q-loading,.sub-q-empty{color:var(--ink-soft);padding:10px 0;font-size:13px;font-style:italic}.ar-block{display:grid;gap:6px;margin:8px 0}.ar-row{padding:7px 12px;background:var(--amber-soft);border-left:3px solid var(--amber);font-size:14px}.ar-row.reason{background:#ecfeff;border-left-color:#0e7490}.ar-row .lbl{font-family:ui-sans-serif,system-ui,sans-serif;font-weight:700;font-size:10px;text-transform:uppercase;color:var(--amber);letter-spacing:.6px;margin-bottom:3px}.ar-row.reason .lbl{color:#0e7490}.q-sheet-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:1px dashed var(--rule);font-family:ui-sans-serif,system-ui,sans-serif}.q-action-btn{background:#fff;border:1px solid var(--rule);padding:5px 10px;border-radius:2px;cursor:pointer;font-size:11px;font-weight:600;color:var(--ink-soft);font-family:inherit;transition:all .12s}.q-action-btn:hover:not(:disabled){border-color:var(--ink);color:var(--ink)}.q-action-btn:disabled{opacity:.35;cursor:not-allowed}.q-action-btn.danger{color:var(--red)}.q-action-btn.danger:hover{border-color:var(--red);background:var(--red-soft)}.sheet-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:12px}.sheet-header h2{font-size:1.2rem;margin:0;font-weight:700}.sheet-actions{display:flex;gap:6px;flex-wrap:wrap}.sheet-tools{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.selection-bar{position:fixed;bottom:max(16px,env(safe-area-inset-bottom));left:50%;transform:translate(-50%);background:var(--ink);color:var(--paper);display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:999px;box-shadow:0 6px 20px #0000002e;font-family:ui-sans-serif,system-ui,sans-serif;z-index:100;font-size:13px;max-width:calc(100vw - 24px)}.sel-count{font-weight:700;font-size:15px}.sel-label{color:#ffffffb3;font-size:12px}.selection-bar button{background:#fff;color:var(--ink);border:none;padding:6px 14px;border-radius:999px;cursor:pointer;font-size:12px;font-weight:700;font-family:inherit;letter-spacing:.3px;transition:opacity .12s}.selection-bar button.danger{background:transparent;color:#ffffffb3}.selection-bar button.danger:hover{color:#fff}.selection-bar button.primary{background:var(--primary);color:#fff}.selection-bar button:hover{opacity:.88}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:16px;z-index:200}.modal{background:#fff;border-radius:6px;padding:18px;width:100%;max-width:440px;box-shadow:0 10px 30px #00000040}.modal h3{margin:0 0 8px;font-size:1.1rem;font-weight:700}.modal-sub{margin:0 0 14px;font-size:13px;color:var(--ink-soft)}.modal-sub.small{font-size:11.5px;margin-top:8px}.modal-label{display:block;font-size:11px;color:var(--ink-soft);font-weight:700;text-transform:uppercase;letter-spacing:.5px;font-family:ui-sans-serif,system-ui,sans-serif;margin:8px 0 4px}.modal-input{width:100%;padding:9px 12px;border:1px solid var(--rule);border-radius:3px;font-size:14px;font-family:inherit;margin-bottom:12px;-webkit-appearance:none}.modal-note{width:100%;padding:9px 12px;border:1px solid var(--rule);border-radius:3px;font-size:13px;font-family:inherit;margin:4px 0 14px;resize:vertical}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}.modal-actions .btn{flex:1;max-width:140px}.modal-checks{display:flex;flex-direction:column;gap:8px;margin-bottom:12px;font-size:14px}.modal-checks label{display:flex;gap:8px;align-items:center;cursor:pointer}.modal-checks input{width:17px;height:17px;cursor:pointer}.reason-list{display:flex;flex-direction:column;gap:4px;margin-bottom:4px}.reason-btn{background:#fff;border:1px solid var(--rule);padding:9px 12px;border-radius:4px;cursor:pointer;text-align:left;font-family:inherit;font-size:14px;display:flex;align-items:center;gap:10px;transition:border-color .12s,background .12s}.reason-btn:hover{border-color:var(--ink)}.reason-btn.active{background:var(--primary-soft);border-color:var(--primary)}.reason-radio{color:var(--primary);font-size:16px}.slide-panel-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:150}.slide-panel{position:fixed;right:0;top:0;height:100%;width:100%;max-width:420px;background:var(--paper);padding:14px;z-index:151;overflow-y:auto;box-shadow:-4px 0 20px #00000026;padding-top:max(14px,env(safe-area-inset-top));padding-bottom:max(14px,env(safe-area-inset-bottom))}.slide-panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.slide-panel-header h4{margin:0;font-size:1rem;font-weight:700}.sim-card{background:#fff;border:1px solid var(--rule);padding:10px 12px;border-radius:3px;margin-bottom:8px}.sim-meta{display:flex;gap:5px;align-items:center;flex-wrap:wrap;font-family:ui-sans-serif,system-ui,sans-serif;margin-bottom:6px}.sim-topic{font-size:11px;color:var(--ink-soft);font-style:italic}.sim-preview{font-size:13px;line-height:1.5;color:var(--ink)}.toast{position:fixed;bottom:max(80px,calc(80px + env(safe-area-inset-bottom)));left:50%;transform:translate(-50%);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:6px;font-size:13px;font-family:ui-sans-serif,system-ui,sans-serif;z-index:250;box-shadow:0 4px 14px #0003;animation:toast-in .25s ease-out}.toast.success{background:var(--green)}.toast.error{background:var(--red)}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,12px)}to{opacity:1;transform:translate(-50%)}}.empty{text-align:center;padding:40px 20px;color:var(--ink-soft);background:#fff;border:1px dashed var(--rule);border-radius:3px;font-style:italic;margin:12px 0}.empty p{margin:0 0 12px}.empty.load-error{display:block;width:100%;font:inherit;font-style:normal;color:var(--ink);cursor:pointer}.empty.load-error:hover{border-color:var(--ink-soft)}.empty .btn{font-style:normal}@media (max-width: 600px){.app-main{padding:12px}.app-header{padding:8px 12px}.brand{font-size:17px}.brand-sub{font-size:10px}.iconbtn{width:32px;height:32px;font-size:14px}.question-card{padding:12px 12px 14px}.q-header{gap:8px}.q-num{min-width:30px;font-size:15px}.q-text{font-size:14.5px}.selection-bar{padding:8px 12px;gap:8px;font-size:12px}.sel-count{font-size:14px}.selection-bar button{padding:5px 11px;font-size:11px}.filter-row-label{display:none}.modal{padding:14px}.modal h3{font-size:1rem}}.auth-divider{display:flex;align-items:center;gap:10px;margin:14px 0;font-size:11px;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif;text-transform:uppercase;letter-spacing:.6px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--rule)}.auth-alt{width:100%}.google-btn{width:100%;background:#fff;color:#1f1f1f;border:1px solid var(--rule);padding:11px 16px;font-family:Roboto,Segoe UI,system-ui,sans-serif;font-weight:600;font-size:14px;display:flex;align-items:center;justify-content:center;border-radius:4px;cursor:pointer;transition:box-shadow .15s,border-color .15s}.google-btn:hover:not(:disabled){box-shadow:0 1px 3px #0000001a;border-color:#888;background:#fff}.google-btn:disabled{opacity:.5}.sheets-accordion{display:flex;flex-direction:column;gap:6px;margin-top:4px}.accordion-section{background:#fff;border:1px solid var(--rule);border-radius:3px;overflow:hidden}.accordion-header{width:100%;background:var(--paper-deeper);border:none;padding:11px 14px;cursor:pointer;font-family:inherit;display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:var(--ink);transition:background .12s;text-align:left}.accordion-header:hover{background:var(--rule-soft)}.accordion-header.open{background:var(--ink);color:var(--paper)}.acc-arrow{font-size:12px;color:inherit;min-width:14px}.acc-title{flex:1;min-width:0}.acc-count{font-family:ui-sans-serif,system-ui,sans-serif;font-size:12px;font-weight:600;background:#00000014;padding:2px 9px;border-radius:999px}.accordion-header.open .acc-count{background:#ffffff2e;color:var(--paper)}.accordion-body{padding:6px 0}.topic-section+.topic-section{border-top:1px dashed var(--rule);margin-top:6px;padding-top:6px}.topic-section-label{font-family:ui-sans-serif,system-ui,sans-serif;font-size:10px;text-transform:uppercase;letter-spacing:.6px;font-weight:700;color:var(--ink-soft);padding:6px 14px 3px}.sheet-row{width:100%;display:flex;align-items:center;background:#fff;border:none;padding:8px 14px;cursor:pointer;font-family:inherit;text-align:left;border-bottom:1px solid transparent;transition:background .12s}.sheet-row:hover{background:var(--paper-deeper)}.sheet-row-main{flex:1;min-width:0}.sheet-name{font-weight:600;font-size:14px;color:var(--ink);margin-bottom:2px}.sheet-meta{font-size:11.5px;color:var(--ink-soft);font-family:ui-sans-serif,system-ui,sans-serif}.sheet-delete{background:transparent;border:none;color:var(--ink-soft);cursor:pointer;width:28px;height:28px;border-radius:50%;font-size:14px;display:flex;align-items:center;justify-content:center;transition:all .12s}.sheet-delete:hover{background:var(--red-soft);color:var(--red)}.user-menu-wrap{position:relative;display:inline-block}.user-menu{position:absolute;top:calc(100% + 6px);right:0;background:#fff;border:1px solid var(--rule);border-radius:4px;box-shadow:0 4px 14px #0000001f;min-width:220px;z-index:60;padding:4px 0}.user-menu-email{padding:9px 14px;border-bottom:1px solid var(--rule-soft)}.user-menu-label{font-size:10px;text-transform:uppercase;color:var(--ink-soft);font-weight:700;letter-spacing:.5px;font-family:ui-sans-serif,system-ui,sans-serif}.user-menu-value{font-size:13px;color:var(--ink);margin-top:2px;font-family:ui-sans-serif,system-ui,sans-serif;word-break:break-all}.user-menu-item{display:block;width:100%;background:transparent;border:none;padding:9px 14px;text-align:left;font-family:inherit;font-size:14px;color:var(--ink);cursor:pointer}.user-menu-item:hover{background:var(--paper-deeper)}.pagination-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;margin:14px 0}.page-jump{display:flex;align-items:center;gap:6px;font-family:ui-sans-serif,system-ui,sans-serif}.page-jump-label{font-size:12px;color:var(--ink-soft)}.page-jump-input{width:70px;padding:5px 8px;border:1px solid var(--rule);border-radius:2px;font-family:inherit;font-size:12px;text-align:center;background:#fff;-moz-appearance:textfield}.page-jump-input::-webkit-outer-spin-button,.page-jump-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.page-jump-input:focus{outline:2px solid var(--primary-soft);border-color:var(--primary)}.subject-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;align-items:start}.subject-column{min-width:0}.subject-header{display:flex;align-items:baseline;justify-content:space-between;padding:0 0 .5rem;margin-bottom:.75rem;border-bottom:1px solid var(--rule, #e5e0d5)}.subject-header h3{margin:0;font-size:1.05rem;letter-spacing:.02em}.subject-total{font-size:.8rem;color:var(--muted, #8a8172);font-variant-numeric:tabular-nums}.chapter-list{display:flex;flex-direction:column;gap:.4rem}.chapter-card{display:flex;align-items:center;justify-content:space-between;gap:.75rem;width:100%;padding:.6rem .75rem;text-align:left;background:var(--card, #fffdf8);border:1px solid var(--rule, #e5e0d5);border-radius:6px;cursor:pointer;transition:border-color .12s ease,transform .12s ease}.chapter-card:hover{border-color:var(--accent, #8a6d3b);transform:translateY(-1px)}.chapter-name{font-size:.92rem;line-height:1.3;min-width:0}.chapter-count{flex:none;font-size:.78rem;color:var(--muted, #8a8172);font-variant-numeric:tabular-nums}@media (max-width: 720px){.subject-columns{grid-template-columns:1fr;gap:2rem}}.passage{margin:0 0 .75rem;border-left:3px solid var(--accent, #8a6d3b);background:var(--card, #fffdf8);border-radius:0 4px 4px 0}.passage-toggle{display:block;width:100%;padding:.45rem .7rem;text-align:left;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent, #8a6d3b);background:none;border:none;cursor:pointer}.passage-toggle:hover{text-decoration:underline}.passage-text{display:block;padding:0 .7rem .7rem;font-size:.95rem;line-height:1.55}.q-text table,.matrix-table{width:100%;margin:.85rem 0;border-collapse:collapse;font-size:.92rem;line-height:1.45;background:var(--card, #fffdf8)}.q-text table td,.q-text table th,.matrix-table td,.matrix-table th{padding:.5rem .65rem;border:1px solid var(--rule, #e5e0d5);vertical-align:top;text-align:left}.q-text table thead th,.q-text table:not(:has(thead)) tr:first-child td,.q-text table:not(:has(thead)) tr:first-child th{background:var(--wash, #f4f0e6);font-weight:600;letter-spacing:.02em}.q-text table td:first-child{width:2.5rem;white-space:nowrap;color:var(--muted, #8a8172);font-weight:600}.q-text table td[colspan]{width:auto;color:inherit}@media (max-width: 640px){.q-text table,.matrix-table{font-size:.85rem}.q-text table td,.matrix-table td{padding:.4rem .45rem}}.passage-group{margin:0 0 1.25rem;border:1px solid var(--rule, #e5e0d5);border-left:3px solid var(--accent, #8a6d3b);border-radius:0 6px 6px 0;background:var(--wash, #f7f4ec);overflow:hidden}.passage-group-head{padding:.5rem .75rem;border-bottom:1px solid var(--rule, #e5e0d5)}.passage-group-toggle{display:flex;align-items:baseline;gap:.5rem;width:100%;background:none;border:none;padding:0;cursor:pointer;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent, #8a6d3b);font-weight:600}.passage-group-count{font-weight:400;text-transform:none;letter-spacing:0;color:var(--muted, #8a8172)}.passage-group-text{padding:.85rem 1rem;border-bottom:1px solid var(--rule, #e5e0d5);background:var(--card, #fffdf8)}.passage-prose{font-size:.95rem;line-height:1.6}.passage-group .question-card{border:none;border-bottom:1px solid var(--rule, #e5e0d5);border-radius:0;margin:0;background:var(--card, #fffdf8)}.passage-group .question-card:last-child{border-bottom:none}.topic-list{display:flex;flex-direction:column;gap:.4rem;margin-top:.75rem}.topic-block{border:1px solid var(--rule, #e5e0d5);border-radius:6px;background:var(--card, #fffdf8);overflow:hidden}.topic-block.open{border-color:var(--accent, #8a6d3b)}.topic-card{display:flex;align-items:stretch;width:100%;background:none;border:none;padding:0}.topic-main{display:flex;align-items:center;justify-content:space-between;flex:1;gap:.75rem;padding:.7rem .85rem;background:none;border:none;text-align:left;cursor:pointer;min-width:0}.topic-main:hover{background:var(--wash, #f4f0e6)}.topic-name{font-size:.95rem;line-height:1.3}.topic-count{flex:none;font-size:.78rem;color:var(--muted, #8a8172);font-variant-numeric:tabular-nums}.topic-drawer-btn{flex:none;width:2.4rem;background:none;border:none;border-left:1px solid var(--rule, #e5e0d5);color:var(--accent, #8a6d3b);cursor:pointer;font-size:.8rem}.topic-drawer-btn:hover{background:var(--wash, #f4f0e6)}.concept-drawer{display:flex;flex-wrap:wrap;gap:.35rem;padding:.65rem .85rem .75rem;border-top:1px solid var(--rule, #e5e0d5);background:var(--wash, #f7f4ec)}.concept-chip{display:inline-flex;align-items:baseline;gap:.4rem;padding:.32rem .6rem;font-size:.84rem;background:var(--card, #fffdf8);border:1px solid var(--rule, #e5e0d5);border-radius:999px;cursor:pointer;transition:border-color .12s ease}.concept-chip:hover{border-color:var(--accent, #8a6d3b)}.concept-count{font-size:.72rem;color:var(--muted, #8a8172);font-variant-numeric:tabular-nums}.concept-loading,.concept-empty{font-size:.85rem;color:var(--muted, #8a8172);font-style:italic;padding:.2rem 0}@media print{body *{visibility:hidden!important}.studio-page,.studio-page *{visibility:visible!important}.studio-page{position:absolute!important;left:0!important;top:0!important;margin:0!important;width:100%!important;min-height:auto!important;box-shadow:none!important;transform:none!important}@page{size:A4;margin:0}.katex-mathml{display:none!important}html:not(.export-granted) .studio-page{display:none!important}html:not(.export-granted) body:after{content:"To print this sheet, use Download PDF in Sheet Studio on saarthiprep.app.";visibility:visible;display:block;padding:40mm 20mm;text-align:center;font:14pt Georgia,serif;color:#000}}.build-btn{background:var(--primary, #4a3d8f);color:#fff;border:none;padding:7px 14px;border-radius:6px;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:filter .12s ease}.build-btn:hover{filter:brightness(1.08)}.selection-bar .secondary{background:#fff;color:var(--ink, #12213B);border:1px solid var(--rule, #D3DAE5);padding:6px 13px;border-radius:6px;cursor:pointer;font-size:13px}.selection-bar .secondary:hover{border-color:var(--primary, #4a3d8f)}@media (max-width: 560px){.build-btn{padding:6px 10px;font-size:12px}.build-btn{font-size:0}.build-btn:before{content:"✦ Build";font-size:12px}}.q-figure{display:block;max-width:100%;height:auto;margin:.85rem 0;border:1px solid var(--rule, #D3DAE5);border-radius:4px;background:#fff;max-height:420px;object-fit:contain}.option .q-figure,.option-text .q-figure{max-height:200px;margin:.4rem 0}.q-stem-split{display:flex;gap:28px;align-items:flex-start;margin-bottom:6px}.q-stem-main{flex:1 1 0;min-width:0}.q-stem-main>.q-text:last-child{margin-bottom:0}.q-stem-figs{flex:0 0 clamp(220px,34%,320px);display:flex;flex-direction:column;gap:12px}.q-stem-figs .q-figure{width:100%;height:auto;max-height:220px;object-fit:contain;object-position:center top;margin:0;border:0}.q-text-figs .q-figure{display:inline-block;vertical-align:middle;max-height:130px;max-width:min(100%,260px);margin:4px 16px 4px 4px;border:0}.q-fig-gallery{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:flex-end;margin:4px 0 12px}.q-fig-cell{margin:0;display:flex;flex-direction:column;align-items:center;gap:4px}.q-fig-cell .q-figure{margin:0;border:0;max-height:130px;max-width:220px}.q-fig-cell figcaption{font-size:14px;color:var(--ink)}@media (max-width: 719px){.q-stem-split{flex-direction:column;gap:12px}.q-stem-figs{flex-basis:auto;width:100%;max-width:360px;align-self:center}}.q-figure{cursor:zoom-in}.fig-lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9000;background:#14120ee0;display:flex;align-items:center;justify-content:center;overflow:hidden}.fig-lightbox-img{max-width:94vw;max-height:88vh;object-fit:contain;background:#fff;border-radius:4px;transform-origin:center center;transition:transform .12s ease-out;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.fig-lightbox-bar{position:absolute;top:.75rem;right:.75rem;display:flex;align-items:center;gap:.35rem;background:var(--paper, #fbfaf6);border:1px solid var(--rule, #d4cfc1);border-radius:6px;padding:.25rem .4rem}.fig-lightbox-bar button{min-width:2rem;height:2rem;font-size:1rem;line-height:1;border:0;border-radius:4px;background:transparent;cursor:pointer;color:var(--ink, #23201a)}.fig-lightbox-bar button:hover:not(:disabled){background:var(--paper-deeper, #f4f1ea)}.fig-lightbox-bar button:disabled{opacity:.35;cursor:default}.fig-lightbox-bar .fig-close{margin-left:.25rem}.fig-zoom-level{font-size:.8rem;min-width:3.2rem;text-align:center;color:var(--muted, #8a8172)}.fig-lightbox-hint{position:absolute;bottom:1rem;left:50%;transform:translate(-50%);font-size:.78rem;color:#ffffffb8;pointer-events:none}@media (max-width: 600px){.fig-lightbox-hint{display:none}}@media print{.q-figure{max-height:300px;break-inside:avoid;page-break-inside:avoid}}.fig-uniform .q-figure.q-fig-norm{height:auto!important;max-height:24em!important;max-width:100%!important;object-fit:contain;object-position:left top}.fig-uniform .ss .q-figure.q-fig-norm{max-height:16em!important;object-position:center top}.fig-uniform :is(.q-fig-gallery,.q-text-figs,.options-pics) .q-figure.q-fig-norm{max-height:9em!important}.fig-uniform .ss :is(.ss-gallery,.ss-stem-figs,.sopt-pic) .q-figure.q-fig-norm{max-height:7em!important}.q-figure.q-figure-vector{padding:6px}@media (min-width: 600px){.options-list.options-pics{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px}.options-list.options-pics .option{align-items:flex-start}.options-list.options-pics .q-figure{max-height:180px;margin:.2rem 0}}@media (min-width: 340px) and (max-width: 599px){.options-list.options-pics.pics-compact{display:grid;grid-template-columns:1fr 1fr;gap:6px 10px}.options-list.options-pics.pics-compact .option{align-items:flex-start}.options-list.options-pics.pics-compact .q-figure{max-height:150px;margin:.2rem 0}}.q-text .katex-display,.option-text .katex-display,.options-list .katex-display{overflow-x:auto;overflow-y:hidden;max-width:100%;padding:2px 0 4px;-webkit-overflow-scrolling:touch}.q-text .katex-display>.katex{white-space:nowrap}.q-text .katex{max-width:100%}.q-text .katex .katex-html{overflow-wrap:normal}.q-body-content .q-text,.q-body-content .options-list,.q-body-content .passage-text{max-width:72ch}.q-figure{display:block;width:auto;max-width:min(100%,440px);max-height:300px;margin:14px auto;padding:8px;border:0;border-radius:8px;box-shadow:0 0 0 1px var(--rule-soft, #e8e4d8);background:#fff}.option .q-figure,.option-text .q-figure{max-width:100%;max-height:150px;margin:4px 0;padding:4px}@media (max-width: 600px){.q-figure{max-width:100%;max-height:260px;padding:6px}}
