@font-face{font-display:"swap";font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.0p1vbqd84i2~o.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.01-pzluls4zgb.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.0rysu1t-ncjq8.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.0w23i72~hprpq.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.0rekyoa-52fj_.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.0d54rk08rx11s.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.16pfc63_du6mx.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.06o5nq0_91v60.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.0kaf-ag2_wkm-.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.0ja97dn.cpc87.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.0zrha2c4sl2je.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.05a9.pc1j_zx9.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.0a0234dc3s62j.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.0v6gcj32-czft.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.0c4.h-mer83d_.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.013x6a4ierotp.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.0d5inmyp-tyv3.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.0iukctyhw5j56.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.0w3.rb_c4stzk.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.0c4zdxz~8frhm.woff2)format("woff2")}:root{--ML__static-fonts:true}
@font-face{font-display:"swap";font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.0p1vbqd84i2~o.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.01-pzluls4zgb.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.0rysu1t-ncjq8.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.0w23i72~hprpq.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.0rekyoa-52fj_.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.0d54rk08rx11s.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.16pfc63_du6mx.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.06o5nq0_91v60.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.0kaf-ag2_wkm-.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.0ja97dn.cpc87.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.0zrha2c4sl2je.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.05a9.pc1j_zx9.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.0a0234dc3s62j.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.0v6gcj32-czft.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.0c4.h-mer83d_.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.013x6a4ierotp.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.0d5inmyp-tyv3.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.0iukctyhw5j56.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.0w3.rb_c4stzk.woff2)format("woff2")}@font-face{font-display:"swap";font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.0c4zdxz~8frhm.woff2)format("woff2")}:root{--ML__static-fonts:true}.ML__container{--_hue:var(--hue,212);--_placeholder-color:var(--placeholder-color,hsl(var(--_hue),40%,49%));--_placeholder-opacity:var(--placeholder-opacity,.4);--_text-font-family:var(--text-font-family,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto","Oxygen","Ubuntu","Cantarell","Fira Sans","Droid Sans","Helvetica Neue",sans-serif);min-height:auto!important}.ML__sr-only{clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.ML__base,.ML__is-inline{display:inline-block}.ML__base{box-sizing:content-box;cursor:text;font-family:inherit;font-style:inherit;font-weight:inherit;vertical-align:baseline;visibility:inherit;border:0;outline:0;width:min-content;margin:0;padding:0;text-decoration:none;position:relative}.ML__strut,.ML__strut--bottom{min-height:.5em;display:inline-block}.ML__small-delim{font-family:KaTeX_Main}.ML__text{font-family:var(--_text-font-family);white-space:pre}.ML__cmr{font-family:KaTeX_Main;font-style:normal}.ML__mathit{font-family:KaTeX_Math;font-style:italic}.ML__mathbf{font-family:KaTeX_Main;font-weight:700}.ML__mathbfit,.lcGreek.ML__mathbf{font-family:KaTeX_Math}.ML__mathbfit{font-style:italic;font-weight:700}.ML__ams,.ML__bb{font-family:KaTeX_AMS}.ML__cal{font-family:KaTeX_Caligraphic}.ML__frak{font-family:KaTeX_Fraktur}.ML__tt{font-family:KaTeX_Typewriter}.ML__script{font-family:KaTeX_Script}.ML__sans{font-family:KaTeX_SansSerif}.ML__series_el,.ML__series_ul{font-weight:100}.ML__series_l{font-weight:200}.ML__series_sl{font-weight:300}.ML__series_sb{font-weight:500}.ML__bold{font-weight:700}.ML__series_eb{font-weight:800}.ML__series_ub{font-weight:900}.ML__series_uc{font-stretch:50%}.ML__series_ec{font-stretch:62.5%}.ML__series_c{font-stretch:75%}.ML__series_sc{font-stretch:87.5%}.ML__series_sx{font-stretch:112.5%}.ML__series_x{font-stretch:125%}.ML__series_ex{font-stretch:150%}.ML__series_ux{font-stretch:200%}.ML__it{font-style:italic}.ML__shape_ol{-webkit-text-stroke:1px #000;text-stroke:1px #000;color:#0000}.ML__shape_sc{font-variant:small-caps}.ML__shape_sl{font-style:oblique}.ML__emph{color:#bc2612}.ML__emph .ML__emph{color:#0c7f99}.ML__highlight{color:#007cb2;background:#edd1b0}.ML__center{text-align:center}.ML__left{text-align:left}.ML__right{text-align:right}.ML__label_padding{padding:0 .5em}.ML__frac-line{width:100%;min-height:1px}.ML__frac-line:after{box-sizing:content-box;content:"";forced-color-adjust:preserve-parent-color;-webkit-print-color-adjust:exact;print-color-adjust:exact;background:currentColor;min-height:max(1px,.04em);margin-top:max(-1px,-.04em);display:block;transform:translate(0)}@media (forced-colors:active){.ML__frac-line{min-height:0}}.ML__sqrt,.ML__sqrt-sign{display:inline-block}.ML__sqrt-sign{position:relative}.ML__sqrt-line{width:100%;height:max(1px,.04em);display:inline-block}.ML__sqrt-line:before{content:"";forced-color-adjust:preserve-parent-color;-webkit-print-color-adjust:exact;print-color-adjust:exact;background:currentColor;min-height:max(1px,.04em);margin-top:min(-1px,-.04em);display:block;transform:translate(0)}@media (forced-colors:active){.ML__sqrt-line:after{background:#fff!important}}.ML__sqrt-line:after{content:" ";border-bottom-width:1px;margin-top:-.1em;display:block}.ML__sqrt-index{margin-left:.277778em;margin-right:-.555556em}.ML__delim-size1{font-family:KaTeX_Size1}.ML__delim-size2{font-family:KaTeX_Size2}.ML__delim-size3{font-family:KaTeX_Size3}.ML__delim-size4{font-family:KaTeX_Size4}.ML__delim-mult .delim-size1>span{font-family:KaTeX_Size1}.ML__delim-mult .delim-size4>span{font-family:KaTeX_Size4}.ML__accent-body{font-family:KaTeX_Main}.ML__accent-combining-char{position:relative;left:.24em}.ML__latex{font-size-adjust:none;letter-spacing:normal;text-align:left;text-indent:0;text-rendering:auto;word-wrap:normal;forced-color-adjust:preserve-parent-color;text-shadow:none;-webkit-user-select:none;user-select:none;white-space:nowrap;word-spacing:normal;direction:ltr;width:min-content;font-family:inherit;font-style:normal;font-variant-caps:normal;font-stretch:100%;line-height:1.2;display:inline-block}.ML__latex .style-wrap{position:relative}.ML__latex .ML__left-right,.ML__latex .ML__mfrac{display:inline-block}.ML__latex .ML__vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.ML__latex .ML__vlist-r{display:table-row}.ML__latex .ML__vlist{vertical-align:bottom;display:table-cell;position:relative}.ML__latex .ML__vlist>span{height:0;display:block;position:relative}.ML__latex .ML__vlist>span>span{display:inline-block}.ML__latex .ML__vlist>span>.ML__pstrut{width:0;overflow:hidden}.ML__latex .ML__vlist-t2{margin-right:-2px}.ML__latex .ML__vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.ML__latex .ML__msubsup{text-align:left}.ML__latex .ML__negativethinspace{height:.71em;margin-left:-.16667em;display:inline-block}.ML__latex .ML__thinspace{width:.16667em;height:.71em;display:inline-block}.ML__latex .ML__mediumspace{width:.22222em;height:.71em;display:inline-block}.ML__latex .ML__thickspace{width:.27778em;height:.71em;display:inline-block}.ML__latex .ML__enspace{width:.5em;height:.71em;display:inline-block}.ML__latex .ML__quad{width:1em;height:.71em;display:inline-block}.ML__latex .ML__qquad{width:2em;height:.71em;display:inline-block}.ML__latex .ML__llap,.ML__latex .ML__rlap{width:0;display:inline-block;position:relative}.ML__latex .ML__llap>.ML__inner,.ML__latex .ML__rlap>.ML__inner{position:absolute}.ML__latex .ML__llap>.ML__fix,.ML__latex .ML__rlap>.ML__fix{display:inline-block}.ML__latex .ML__llap>.ML__inner{right:0}.ML__latex .ML__rlap>.ML__inner{left:0}.ML__latex .ML__rule{box-sizing:border-box;border:0 solid;display:inline-block;position:relative}.ML__latex .overline .overline-line,.ML__latex .underline .underline-line{width:100%}.ML__latex .overline .overline-line:before,.ML__latex .underline .underline-line:before{content:"";-webkit-print-color-adjust:exact;print-color-adjust:exact;border-bottom-style:solid;border-bottom-width:max(1px,.04em);display:block}.ML__latex .overline .overline-line:after,.ML__latex .underline .underline-line:after{content:"";-webkit-print-color-adjust:exact;print-color-adjust:exact;border-bottom-style:solid;border-bottom-width:max(1px,.04em);margin-top:-1px;display:block}.ML__latex .ML__stretchy{width:100%;display:block;position:absolute;left:0;overflow:hidden}.ML__latex .ML__stretchy:after,.ML__latex .ML__stretchy:before{content:""}.ML__latex .ML__stretchy svg{fill:currentColor;fill-opacity:1;fill-rule:nonzero;height:inherit;stroke:currentColor;stroke-dasharray:none;stroke-dashoffset:0;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-width:1px;width:100%;display:block;position:absolute}.ML__latex .slice-1-of-2{left:0}.ML__latex .slice-1-of-2,.ML__latex .slice-2-of-2{width:50.2%;display:inline-flex;position:absolute;overflow:hidden}.ML__latex .slice-2-of-2{right:0}.ML__latex .slice-1-of-3{width:25.1%;left:0}.ML__latex .slice-1-of-3,.ML__latex .slice-2-of-3{display:inline-flex;position:absolute;overflow:hidden}.ML__latex .slice-2-of-3{width:50%;left:25%}.ML__latex .slice-3-of-3{width:25.1%;right:0}.ML__latex .slice-1-of-1,.ML__latex .slice-3-of-3{display:inline-flex;position:absolute;overflow:hidden}.ML__latex .slice-1-of-1{width:100%;left:0}.ML__latex .ML__nulldelimiter,.ML__latex .ML__op-group{display:inline-block}.ML__latex .ML__op-symbol{position:relative}.ML__latex .ML__op-symbol.ML__small-op{font-family:KaTeX_Size1}.ML__latex .ML__op-symbol.ML__large-op{font-family:KaTeX_Size2}:is(.ML__latex:has(.ML__align_environment),.ML__latex:has(.ML__center_environment),.ML__latex:has(.ML__eqnarray_environment),.ML__latex:has(.ML__gather_environment),.ML__latex:has(.ML__multiline_environment)){width:100%}.ML__latex .ML__multiline_environment{width:100%;display:inline-flex}.ML__latex .ML__center_environment{justify-content:center;width:100%;display:inline-flex}.ML__latex .ML__align_environment,.ML__latex .ML__eqnarray_environment,.ML__latex .ML__gather_environment{display:inline-block}.ML__latex .ML__mtable .ML__vertical-separator{box-sizing:border-box;min-width:1px;display:inline-block}.ML__latex .ML__mtable .ML__arraycolsep{display:inline-block}.ML__latex .ML__mtable .col-align-m>.ML__vlist-t,.ML__latex .ML__mtable .col-align-c>.ML__vlist-t{text-align:center}.ML__latex .ML__mtable .col-align-l>.ML__vlist-t{text-align:left}.ML__latex .ML__mtable .col-align-r>.ML__vlist-t{text-align:right}[data-href]{cursor:pointer}.ML__error{background-color:#cc00411a;background-image:radial-gradient(#cc0041,#0000 70%);background-position:0 100%;background-repeat:repeat-x;background-size:3px 3px;padding-bottom:3px;display:inline-block}.ML__error>.ML__error{background:0 0;padding:0}.ML__placeholder{color:var(--_placeholder-color);opacity:var(--_placeholder-opacity);padding-left:.4ex;padding-right:.4ex;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}.ML__notation{box-sizing:border-box;line-height:0;position:absolute}.ML__tooltip-container{position:relative;transform:scale(0)}.ML__tooltip-container .ML__tooltip-content{background:var(--_tooltip-background-color);border:var(--_tooltip-border);border-radius:var(--_tooltip-border-radius);visibility:hidden;z-index:2;--_selection-color:var(--_tooltip-color);width:max-content;max-width:400px;box-shadow:var(--_tooltip-box-shadow);color:var(--_tooltip-color);opacity:0;padding:12px;transition:opacity .15s cubic-bezier(.4,0,1,1);display:inline-table;position:fixed}.ML__tooltip-container .ML__tooltip-content .ML__text{white-space:normal}.ML__tooltip-container .ML__tooltip-content .ML__base{display:contents}.ML__tooltip-container:hover .ML__tooltip-content{opacity:1;visibility:visible;font-size:.75em;transform:scale(1)translateY(3em)}.ML__bg{background-color:#0000!important}.ML__bg:before{background-color:var(--bg-color);box-sizing:border-box;content:"";z-index:-1;position:absolute;inset:0}
:root{--bg:#f6f8fb;--surface:#fff;--surface-strong:#f9fbfd;--text:#18202f;--muted:#647084;--line:#dbe2ec;--line-strong:#c5cedb;--accent:#0d9488;--accent-strong:#0f766e;--blue:#2563eb;--amber:#b7791f;--amber-bg:#fff8e6;--green:#15803d;--green-bg:#ecfdf3;--red:#b42318;--red-bg:#fff1f0;--shadow:0 16px 40px #19233717;--radius:8px}*{box-sizing:border-box}html{background:var(--bg)}body{min-height:100vh;color:var(--text);background:linear-gradient(180deg, #0d948814, transparent 320px), var(--bg);letter-spacing:0;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}img,video{max-width:100%;display:block}progress{background:#e6ebf2;border:0;border-radius:999px;width:100%;height:8px;overflow:hidden}progress::-webkit-progress-bar{background:#e6ebf2;border-radius:999px}progress::-webkit-progress-value{background:linear-gradient(90deg, var(--accent), var(--blue));border-radius:999px}progress::-moz-progress-bar{background:linear-gradient(90deg, var(--accent), var(--blue));border-radius:999px}.auth-shell,.exam-list-shell,.results-shell,.admin-shell{width:min(1280px,100% - 32px);margin:0 auto}.auth-shell{grid-template-columns:minmax(320px,480px) 1fr;align-items:center;gap:40px;min-height:100vh;padding:40px 0;display:grid}.auth-shell--centered{grid-template-columns:minmax(320px,480px);justify-content:center}.auth-demo-hint{background:var(--surface-strong,#f6f8fb);border:1px solid var(--line);color:var(--muted);border-radius:8px;margin:18px 0 0;padding:10px 12px;font-size:.82rem;line-height:1.55}.auth-demo-hint code{color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em}.auth-panel,.auth-context,.exam-list-panel,.token-entry-panel,.admin-panel,.metric-card,.score-panel,.breakdown-panel,.review-section,.question-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.auth-panel{padding:34px}.brand-lockup{align-items:center;gap:14px;display:flex}.brand-lockup.compact{gap:12px}.brand-mark{color:#fff;background:linear-gradient(135deg, var(--accent), var(--blue));border-radius:var(--radius);flex:0 0 44px;place-items:center;width:44px;height:44px;display:grid}.brand-lockup.compact .brand-mark{flex-basis:38px;width:38px;height:38px}.brand-lockup h1{margin:0;font-size:1.45rem;line-height:1.15}.brand-lockup.compact h1{font-size:1.05rem}.brand-lockup p,.section-title-row p,.exam-tile p,.score-panel p,.breakdown-row p,.review-section p,.center-state p,.muted{color:var(--muted);margin:0;line-height:1.55}.login-form{gap:18px;margin-top:30px;display:grid}.login-form label{color:#344054;gap:7px;font-size:.91rem;font-weight:700;display:grid}.login-form input,.number-answer,.text-answer{width:100%;color:var(--text);border:1px solid var(--line-strong);border-radius:var(--radius);background:#fff;outline:none;transition:border-color .16s,box-shadow .16s}.login-form input{min-height:46px;padding:0 12px}.login-form input:focus,.number-answer:focus,.text-answer:focus{border-color:var(--accent);box-shadow:0 0 0 4px #0d94881f}.form-error{color:var(--red);background:var(--red-bg);border-radius:var(--radius);border:1px solid #ffc9c4;margin:0;padding:10px 12px;font-size:.92rem}.form-success{color:var(--green);background:var(--green-bg);border-radius:var(--radius);border:1px solid #b9e8ca;margin:14px 0 0;padding:10px 12px;font-size:.92rem}.primary-button,.secondary-button,.ghost-button,.submit-button{border-radius:var(--radius);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:42px;font-size:.92rem;font-weight:800;transition:transform .14s,border-color .14s,background .14s,color .14s;display:inline-flex}.primary-button,.submit-button{color:#fff;background:var(--accent-strong)}.primary-button{width:100%;padding:0 16px}.submit-button{white-space:nowrap;padding:0 15px}.secondary-button,.ghost-button{color:var(--text);border-color:var(--line);background:#fff;padding:0 14px}.ghost-button{min-width:104px}.primary-button:hover,.secondary-button:hover,.ghost-button:hover,.submit-button:hover{transform:translateY(-1px)}button:disabled{cursor:not-allowed;opacity:.55;transform:none}.auth-context{gap:14px;padding:22px;display:grid}.auth-context>div{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:72px 1fr;align-items:center;gap:18px;padding:18px;display:grid}.context-number{min-height:48px;color:var(--accent-strong);border-radius:var(--radius);background:#dff8f4;place-items:center;font-weight:900;display:grid}.exam-list-shell,.results-shell,.admin-shell{padding:28px 0 48px}.list-header,.results-header,.admin-header,.exam-topbar{justify-content:space-between;align-items:center;gap:18px;display:flex}.exam-list-panel{margin-top:26px;padding:26px}.section-title-row{justify-content:space-between;align-items:center;gap:18px;margin-bottom:20px;display:flex}.section-title-row h2{margin:0 0 4px;font-size:1.2rem}.exam-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;display:grid}.exam-tile{border:1px solid var(--line);border-radius:var(--radius);background:#fff;grid-template-columns:1fr auto;gap:14px;min-height:156px;padding:18px;display:grid}.exam-tile h3{margin:0 0 4px;font-size:1rem}.tile-meta{flex-wrap:wrap;grid-column:1/-1;align-self:end;gap:8px;display:flex}.tile-meta span{color:#334155;background:#eef6ff;border:1px solid #d8e9ff;border-radius:999px;align-items:center;gap:6px;padding:6px 9px;font-size:.82rem;font-weight:800;display:inline-flex}.student-token-shell{align-content:start;min-height:100vh;display:grid}.token-entry-panel{grid-template-columns:minmax(260px,1fr) minmax(280px,420px);gap:24px;margin-top:26px;padding:28px;display:grid}.token-entry-copy h2{margin:0 0 10px;font-size:clamp(1.7rem,4vw,3rem);line-height:1.05}.token-entry-copy p{max-width:560px;color:var(--muted);margin:0;line-height:1.6}.token-form,.admin-form{gap:14px;display:grid}.token-form label,.admin-form label{color:#344054;gap:7px;font-size:.88rem;font-weight:800;display:grid}.token-form input,.admin-form input{width:100%;min-height:44px;color:var(--text);border:1px solid var(--line-strong);border-radius:var(--radius);background:#fff;outline:none;padding:0 12px}.center-state{text-align:center;align-content:center;justify-items:center;gap:10px;min-height:100vh;padding:24px;display:grid}.center-state h1{margin:0;font-size:1.5rem}.exam-shell{grid-template-rows:auto 1fr;grid-template-columns:minmax(0,1fr) 280px;gap:18px;width:min(1180px,100% - 24px);min-height:100vh;margin:0 auto;padding:18px 0;display:grid}.exam-topbar{border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffe6;grid-column:1/-1;padding:13px 14px}.status-strip{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.status-item{color:#344054;border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-items:center;gap:7px;min-height:38px;padding:0 10px;font-size:.86rem;font-weight:800;display:inline-flex}.status-item.warning{color:var(--amber);background:var(--amber-bg);border-color:#f6da92}.status-item.danger{color:var(--red);background:var(--red-bg);border-color:#ffc9c4}.question-nav{border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-self:start;padding:14px;position:sticky;top:18px}.nav-heading{color:var(--muted);justify-content:space-between;gap:8px;font-size:.84rem;font-weight:800;display:flex}.nav-grid{grid-template-columns:repeat(5,1fr);gap:8px;margin-top:14px;display:grid}.nav-dot{aspect-ratio:1;color:#475467;border:1px solid var(--line);cursor:pointer;background:#f4f7fb;border-radius:7px;font-size:.82rem;font-weight:900}.nav-dot.answered{color:var(--accent-strong);background:#e8fbf8;border-color:#a5e7dd}.nav-dot.active{color:#fff;background:var(--blue);border-color:var(--blue)}.question-stage{min-width:0}.instruction-band{color:#3f4c5f;border-radius:var(--radius);background:#fefdf8;border:1px solid #ece2bd;align-items:flex-start;gap:10px;margin-bottom:14px;padding:12px 14px;display:flex}.instruction-band p{margin:0;line-height:1.48}.question-panel{padding:26px}.question-meta{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.question-meta span{color:#334155;background:#eef6ff;border:1px solid #d8e9ff;border-radius:999px;padding:6px 9px;font-size:.78rem;font-weight:900}.question-panel h2{margin:0;font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.32}.media-stack{gap:12px;margin-top:18px;display:grid}.media-stack figure{margin:0}.media-stack img,.media-stack video{object-fit:cover;border:1px solid var(--line);border-radius:var(--radius);width:100%;max-height:300px}.media-stack figcaption{color:var(--muted);margin-top:7px;font-size:.85rem}.option-list{gap:10px;margin-top:24px;display:grid}.option-row{text-align:left;min-height:56px;color:var(--text);border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;background:#fff;grid-template-columns:34px 1fr;align-items:center;gap:12px;padding:10px 13px;font-weight:700;display:grid}.option-row.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:#f0fdfa}.option-key{width:34px;height:34px;color:var(--blue);background:#eaf1ff;border-radius:7px;place-items:center;font-weight:900;display:grid}.text-answer{resize:vertical;min-height:170px;margin-top:22px;padding:13px}.number-answer{min-height:48px;margin-top:22px;padding:0 13px}.question-actions{justify-content:space-between;gap:12px;margin-top:14px;display:flex}.progress-panel{padding:18px}.progress-panel h2{margin:0 0 15px;font-size:1rem}.progress-ring{aspect-ratio:1;background:radial-gradient(circle at center, #fff 58%, transparent 60%), conic-gradient(var(--accent) var(--value), #e7edf5 0deg);border-radius:50%;place-items:center;width:148px;margin:0 auto 20px;display:grid}.progress-ring span{font-size:1.55rem;font-weight:900}.topic-stack{gap:14px;display:grid}.topic-row>div,.breakdown-row>div{justify-content:space-between;gap:12px;margin-bottom:7px;font-size:.88rem;display:flex}.topic-row span,.breakdown-row span{color:#344054;font-weight:800}.topic-row strong,.breakdown-row strong{color:var(--text)}.integrity-note{color:var(--green);background:var(--green-bg);border-radius:var(--radius);border:1px solid #b9e8ca;gap:10px;margin-top:22px;padding:12px;display:flex}.integrity-note p{color:#25623a;margin:0;font-size:.87rem;line-height:1.42}.result-dashboard{grid-template-columns:minmax(260px,360px) 1fr;gap:18px;margin-top:24px;display:grid}.score-panel{align-content:center;min-height:300px;padding:28px;display:grid}.score-panel span{width:max-content;color:var(--green);background:var(--green-bg);border:1px solid #b9e8ca;border-radius:999px;padding:6px 10px;font-size:.82rem;font-weight:900}.score-panel.failed span{color:var(--red);background:var(--red-bg);border-color:#ffc9c4}.score-panel strong{margin:20px 0 8px;font-size:clamp(3.2rem,9vw,5.8rem);line-height:.95}.breakdown-panel{padding:24px}.breakdown-list{gap:16px;margin-bottom:22px;display:grid}.breakdown-row p{margin-top:6px;font-size:.84rem}.review-section{margin-top:22px;padding:24px}.review-list{gap:14px;display:grid}.review-item{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:18px}.review-status{color:var(--muted);align-items:center;gap:8px;font-size:.86rem;font-weight:900;display:flex}.review-status svg{color:var(--accent-strong)}.review-item h3{margin:12px 0 14px;font-size:1rem;line-height:1.4}.answer-compare{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.answer-compare>div{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:6px;min-width:0;padding:12px;display:grid}.answer-compare span{color:var(--muted);font-size:.8rem;font-weight:900}.answer-compare strong{overflow-wrap:anywhere}.explanation{color:#3f4c5f;margin:14px 0 0;line-height:1.55}.admin-header{margin-bottom:22px}.admin-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:22px 0;display:grid}.admin-metrics--3col{grid-template-columns:repeat(3,minmax(0,1fr));margin:0}.metric-group{margin:18px 0 8px}.metric-group-label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);opacity:.8;margin:0 0 8px;font-size:.74rem;font-weight:700}.metric-card-sub{color:var(--muted);margin-top:2px;font-size:.78rem;line-height:1.3}.dashboard-table{border-collapse:collapse;width:100%;margin-top:12px;font-size:.92rem}.admin-panel:has(>.dashboard-table){overflow-x:auto}.dashboard-table th{text-align:left;border-bottom:1px solid var(--line);color:var(--muted);text-transform:uppercase;letter-spacing:.04em;padding:10px 12px;font-size:.78rem;font-weight:700}.dashboard-table td{border-bottom:1px solid var(--line);vertical-align:top;padding:12px}.dashboard-table tr:last-child td{border-bottom:none}.dashboard-table tr:hover td{background:var(--surface-strong)}.token-pill{background:var(--amber-bg);color:var(--amber);border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;font-weight:700;display:inline-flex}.token-form{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:2fr 1fr 1fr auto;align-items:end;gap:14px;margin:16px 0 8px;padding:16px;display:grid}.token-form label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;gap:6px;font-size:.82rem;font-weight:700;display:grid}.token-form input,.token-form select{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);color:var(--text);padding:10px 12px;font-size:.95rem;font-weight:500}.token-form button{height:44px}.form-success{background:var(--green-bg);color:var(--green);border-radius:var(--radius);margin:8px 0;padding:10px 14px;font-size:.9rem;font-weight:600}.exam-detail-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px;display:grid}.exam-detail-grid>div{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:4px;padding:12px 14px;display:grid}.exam-detail-grid span{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem;font-weight:700}.exam-detail-grid strong{font-size:.95rem}.teacher-shell{background:var(--bg);grid-template-columns:240px 1fr;min-height:100vh;display:grid}.teacher-sidebar{background:var(--surface);border-right:1px solid var(--line);flex-direction:column;gap:22px;height:100vh;padding:22px 16px;display:flex;position:sticky;top:0}.teacher-sidebar-brand{align-items:center;gap:10px;display:flex}.teacher-sidebar-brand strong{font-size:.98rem;display:block}.teacher-sidebar-brand p{color:var(--muted);margin:0;font-size:.78rem}.teacher-nav{flex-direction:column;flex:1;gap:12px;display:flex}.nav-group{flex-direction:column;gap:1px;display:flex}.nav-group-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);opacity:.7;padding:0 14px 4px;font-size:.7rem;font-weight:700;display:block}.teacher-nav a{color:var(--muted);border-radius:8px;align-items:center;gap:12px;padding:7px 14px;font-size:.9rem;font-weight:600;transition:background .15s,color .15s;display:flex}.teacher-nav a:hover{background:var(--bg);color:var(--text)}.teacher-nav a.active{background:var(--accent);color:#fff}.teacher-sidebar-footer{border-top:1px solid var(--line);gap:12px;padding-top:16px;display:grid}.teacher-user-card strong{font-size:.92rem;display:block}.teacher-user-card span{color:var(--muted);font-size:.78rem;display:block}.teacher-sidebar-footer .ghost-button{justify-content:center}.impersonation-banner{z-index:50;color:#92400e;background:#fef3c7;border-bottom:1px solid #fcd34d;grid-column:1/-1;justify-content:space-between;align-items:center;gap:12px;padding:10px 18px;font-size:.85rem;display:flex;position:sticky;top:0}.impersonation-banner strong{color:#92400e}.impersonation-banner code{background:#92400e14;border-radius:4px;padding:1px 6px;font-size:.78rem}.impersonation-banner .ghost-button{background:#fff}.teacher-subject-pill{background:var(--green-bg);color:var(--green);text-transform:uppercase;letter-spacing:.04em;border-radius:999px;align-items:center;gap:4px;width:fit-content;margin-top:6px;padding:2px 8px;font-weight:700;display:inline-flex;font-size:.7rem!important}.teacher-subject-pill.admin{color:#4338ca;background:#6366f124}.grading-list{gap:16px;margin:16px 0 0;padding:0;list-style:none;display:grid}.grading-item{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:12px;padding:16px 18px;display:grid}.grading-item-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.grading-item-prompt{margin:0;line-height:1.5}.grading-item-media{flex-wrap:wrap;gap:12px;display:flex}.grading-item-media img,.grading-item-media video{border:1px solid var(--line);border-radius:8px;max-width:240px;max-height:180px}.grading-item-answer-block{grid-template-columns:1fr 1fr;gap:12px;display:grid}@media (max-width:720px){.grading-item-answer-block{grid-template-columns:1fr}}.grading-label{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;font-size:.72rem;display:block}.grading-answer{background:var(--surface-strong);border:1px solid var(--line);white-space:pre-wrap;word-break:break-word;border-radius:8px;padding:10px 12px;font-size:.95rem}.grading-answer.correct{background:var(--green-bg);border-color:#10b98152}.grading-essay-row{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.grading-essay-row label{color:var(--muted);gap:4px;font-size:.85rem;display:grid}.grading-essay-row input{width:120px}.teacher-main{max-width:100%;padding:28px 36px 48px;overflow-x:auto}.teacher-page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 16px;margin-bottom:18px;display:flex}.teacher-page-header>div:first-child{flex:220px;min-width:0}.teacher-page-header>div:last-child{flex-wrap:wrap;flex-shrink:0;gap:8px;display:flex}.teacher-page-header h1{margin:0 0 4px;font-size:1.4rem}.teacher-page-header p{color:var(--muted);margin:0;font-size:.92rem}.teacher-page-header>div:last-child .ghost-button,.teacher-page-header>div:last-child .primary-button{white-space:nowrap}.inline-reset-form{align-items:center;gap:6px;display:flex}.inline-reset-form input{border:1px solid var(--line-strong);border-radius:var(--radius);padding:6px 10px;font-size:.88rem}.import-preview-list{gap:8px;margin:12px 0 0;padding:0;list-style:none;display:grid}.import-preview-list li{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);justify-content:space-between;align-items:center;padding:10px 14px;font-size:.92rem;display:flex}.import-preview-list strong{font-weight:700}.import-preview-list span{color:var(--muted);font-size:.85rem}.class-panel{margin-bottom:16px}.class-panel-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.class-panel-header h2{margin:0 0 4px;font-size:1.12rem}.class-panel-header p{color:var(--muted);margin:0;font-size:.85rem}.student-list{gap:6px;margin:0;padding:0;list-style:none;display:grid}.student-row{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 12px;padding:8px 12px;display:flex}.student-row-main{flex:220px;align-items:center;gap:10px;min-width:0;display:flex}.student-row-main strong{font-size:.92rem;line-height:1.25;display:block}.student-row-main span{color:var(--muted);font-size:.78rem;display:block}.student-row-actions{flex-shrink:0;align-items:center;gap:4px;display:flex}.student-row-actions .ghost-button{gap:4px;padding:4px 8px;font-size:.82rem}.student-row-actions .ghost-button svg{width:13px;height:13px}.package-format-help{background:var(--surface-strong)}.package-format-help code{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:2px 6px;font-size:.85rem}.exam-form{gap:16px;max-width:720px;display:grid}.exam-form label,.question-form label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;gap:6px;font-size:.82rem;font-weight:700;display:grid}.exam-form input,.exam-form textarea,.exam-form select,.question-form input,.question-form textarea,.question-form select{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);color:var(--text);text-transform:none;letter-spacing:0;padding:10px 12px;font-family:inherit;font-size:.95rem;font-weight:500}.exam-form textarea,.question-form textarea{resize:vertical}.exam-form small{color:var(--muted);text-transform:none;letter-spacing:0;font-size:.78rem;font-weight:500}.exam-form-row,.question-form-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.exam-form button[type=submit],.question-form button[type=submit]{justify-self:start}.exam-form-checkbox{align-items:center;gap:10px;font-size:.92rem;text-transform:none!important;letter-spacing:0!important;color:var(--text)!important;flex-direction:row!important;font-weight:500!important;display:flex!important}.exam-form-checkbox input{width:16px;height:16px;margin:0}.bank-picker-list{gap:8px;max-height:360px;margin:12px 0;padding:0;list-style:none;display:grid;overflow-y:auto}.bank-picker-list li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px}.bank-picker-list li.in-exam{background:var(--surface-strong);border-color:var(--line-strong)}.bank-picker-list li.in-exam label{cursor:not-allowed}.bank-picker-list li.in-exam p,.bank-picker-list li.in-exam .bank-picker-meta>:not(.in-exam-badge){opacity:.6}.in-exam-badge{background:var(--green-bg);color:var(--green);text-transform:uppercase;letter-spacing:.04em;border-radius:999px;align-items:center;gap:4px;padding:2px 8px;font-size:.7rem;font-weight:700;display:inline-flex}.bank-picker-list label{cursor:pointer;grid-template-columns:20px 1fr;align-items:start;gap:12px;display:grid}.bank-picker-list input{margin:4px 0 0}.bank-picker-meta{flex-wrap:wrap;align-items:center;gap:10px;font-size:.82rem;display:flex}.bank-filter-row{flex-wrap:wrap;gap:8px;margin:12px 0 16px;display:flex}.bank-filter-row select{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);color:var(--text);min-width:140px;padding:8px 12px;font-size:.88rem}.difficulty-pill{text-transform:uppercase;letter-spacing:.04em;border-radius:999px;padding:2px 10px;font-size:.78rem;font-weight:700}.difficulty-pill.easy{background:var(--green-bg);color:var(--green)}.difficulty-pill.medium{background:var(--amber-bg);color:var(--amber)}.difficulty-pill.hard{background:var(--red-bg);color:var(--red)}.difficulty-pill.hots{color:#6d28d9;background:#f3e8ff}.difficulty-pill.olympiad{color:#3730a3;background:#e0e7ff}.exam-form-row.five{grid-template-columns:repeat(5,minmax(0,1fr))}.language-pill{text-transform:uppercase;letter-spacing:.04em;color:#0e7490;background:#ecfeff;border-radius:999px;padding:2px 10px;font-size:.78rem;font-weight:700}.bank-media-thumb{border-radius:var(--radius);border:1px solid var(--line);object-fit:cover;max-width:220px;max-height:140px;margin-top:8px}.bank-media-audio,.bank-media-video{max-width:320px;margin-top:8px}.bank-media-video{border-radius:var(--radius);border:1px solid var(--line);width:100%}.exam-form-section{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-strong);gap:14px;margin-top:6px;padding:16px;display:grid}.exam-form-section legend{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;padding:0 8px;font-size:.78rem;font-weight:800}.exam-form-section-title{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:4px 0 0;font-size:.78rem;font-weight:800}.composition-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:12px;display:grid}.composition-block{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:6px;padding:12px 14px;display:grid}.composition-block>span{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;opacity:.85;font-size:.72rem;font-weight:700}.composition-block>strong{font-size:.95rem}.composition-block ul{gap:2px;margin:0;padding:0;font-size:.86rem;list-style:none;display:grid}.composition-block li{justify-content:space-between;align-items:center;gap:8px;padding:2px 0;display:flex}.composition-block li label{justify-content:space-between;align-items:center;gap:8px;width:100%;margin:0;display:flex!important}.composition-block li label>span{flex:1;align-items:baseline;gap:6px;min-width:0;display:flex}.composition-block li input[type=number]{padding:4px 6px;font-size:.85rem;width:64px!important}.composition-block li input[type=number]:disabled{background:var(--surface,#f3f5f8);color:var(--muted);cursor:not-allowed}.question-form{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:14px;margin-top:12px;padding:18px;display:grid}.question-form-actions{gap:10px;display:flex}.options-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);gap:8px;padding:12px;display:grid}.options-block-header{justify-content:space-between;align-items:center;font-size:.85rem;display:flex}.option-row-edit{grid-template-columns:32px 1fr auto auto;align-items:center;gap:10px;display:grid}.option-id-chip{background:var(--bg);border:1px solid var(--line);border-radius:999px;place-items:center;width:28px;height:28px;font-size:.82rem;font-weight:700;display:inline-grid}.option-correct-toggle{text-transform:none;letter-spacing:0;color:var(--text);align-items:center;gap:6px;font-size:.82rem;display:inline-flex}.option-correct-toggle input{margin:0}.question-list{gap:14px;margin:16px 0 0;padding:0;list-style:none;display:grid}.question-list-item{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:8px;padding:14px 16px;display:grid}.question-list-meta{align-items:center;gap:14px;font-size:.82rem;display:flex}.question-type-pill{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:.78rem;font-weight:700}.question-list-prompt{-webkit-line-clamp:4;-webkit-box-orient:vertical;margin:0;font-size:.98rem;line-height:1.5;display:-webkit-box;overflow:hidden}.question-list-options{gap:6px;margin:0;padding:0;list-style:none;display:grid}.question-list-options li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);align-items:center;gap:10px;padding:6px 10px;font-size:.92rem;display:flex}.question-list-options li.is-correct{border-color:var(--green);background:var(--green-bg)}.correct-flag{text-transform:uppercase;letter-spacing:.06em;color:var(--green);margin-left:auto;font-size:.72rem;font-weight:800}.question-list-answer{margin:0;font-size:.92rem}.question-list-explanation{color:var(--muted);margin:0;font-size:.88rem;font-style:italic}.metric-card{gap:8px;padding:18px;display:grid}.metric-card svg{color:var(--accent-strong)}.metric-card span{color:var(--muted);font-size:.82rem;font-weight:900}.metric-card strong{font-size:1.8rem;line-height:1}.admin-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.admin-panel{padding:22px}.admin-panel.wide{grid-column:1/-1}.upload-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.upload-card{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);align-content:start;gap:12px;min-height:260px;padding:16px;display:grid}.upload-icon{width:40px;height:40px;color:var(--accent-strong);border-radius:var(--radius);background:#e8fbf8;place-items:center;display:grid}.upload-card h3{margin:0;font-size:1rem}.upload-card p{color:var(--muted);margin:0;line-height:1.45}.file-picker{margin-top:auto;display:grid}.file-picker input{opacity:0;pointer-events:none;position:absolute}.file-picker span{color:#344054;border:1px dashed var(--line-strong);border-radius:var(--radius);text-overflow:ellipsis;white-space:nowrap;background:#fff;min-height:42px;padding:11px 12px;font-size:.86rem;font-weight:800;display:block;overflow:hidden}.form-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.admin-list,.upload-history{gap:10px;display:grid}.token-row,.class-row,.upload-row{background:var(--surface-strong);border:1px solid var(--line);border-radius:var(--radius);gap:4px;padding:12px;display:grid}.token-row span,.class-row span,.upload-row span,.upload-row em{color:var(--muted);font-size:.82rem;font-style:normal;font-weight:800}.upload-row{grid-template-columns:150px 1fr 90px;align-items:center}.admin-workbench{grid-template-columns:286px minmax(0,1fr);align-items:start;gap:18px;margin-top:22px;display:grid}.classification-sidebar{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);gap:8px;padding:14px;display:grid;position:sticky;top:18px}.sidebar-title{color:var(--muted);text-transform:uppercase;padding:4px 6px 8px;font-size:.78rem;font-weight:900}.classification-item{width:100%;color:var(--text);text-align:left;border-radius:var(--radius);cursor:pointer;background:0 0;border:1px solid #0000;grid-template-columns:28px 34px 1fr;align-items:center;gap:10px;padding:12px;display:grid}.classification-item.active{background:#eef6ff;border-color:#c9defe}.classification-number,.classification-icon{border-radius:7px;place-items:center;display:grid}.classification-number{width:28px;height:28px;color:var(--accent-strong);background:#e8fbf8;font-size:.8rem;font-weight:900}.classification-icon{width:34px;height:34px;color:var(--blue);background:#eaf1ff}.classification-item strong,.classification-item em{display:block}.classification-item strong{font-size:.9rem}.classification-item em{color:var(--muted);margin-top:2px;font-size:.76rem;font-style:normal;line-height:1.35}.classification-content,.classification-stack{min-width:0}.classification-stack{gap:16px;display:grid}.content-heading{justify-content:space-between;align-items:end;gap:16px;padding:6px 2px 0;display:flex}.content-heading h2{margin:0 0 4px;font-size:1.55rem;line-height:1.15}.content-heading p{color:var(--muted);margin:0}.content-grid{gap:14px;display:grid}.content-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.content-grid.class-layout{grid-template-columns:minmax(230px,320px) minmax(0,1fr)}.admin-panel.flat{box-shadow:none}.token-generator-form{grid-template-columns:repeat(4,minmax(0,1fr)) auto;align-items:end}.prompt-workspace{grid-template-columns:minmax(190px,270px) minmax(0,1fr);gap:12px;min-width:0;display:grid}.class-selector-list,.student-table,.monitor-list,.progress-list,.analysis-class-stack,.analysis-students,.achievement-chart,.prompt-list{gap:10px;display:grid}.class-selector,.prompt-selector,.student-row,.monitor-row,.progress-row,.analysis-class,.analysis-student,.student-exam-analysis{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-strong)}.class-selector{width:100%;color:var(--text);text-align:left;cursor:pointer;gap:4px;padding:12px;display:grid}.class-selector.active{border-color:var(--accent);background:#f0fdfa}.prompt-selector{width:100%;color:var(--text);text-align:left;cursor:pointer;gap:4px;padding:12px;display:grid}.prompt-selector.active{border-color:var(--blue);background:#eef6ff}.class-selector span,.prompt-selector span,.student-row span,.student-row em,.monitor-row span,.monitor-row em,.progress-row span,.analysis-class summary span,.analysis-student summary span,.student-exam-analysis span{color:var(--muted);font-size:.82rem;font-style:normal;font-weight:800}.prompt-preview{gap:10px;min-width:0;display:grid}.prompt-preview>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.prompt-preview textarea{color:#1f2937;border:1px solid var(--line-strong);border-radius:var(--radius);resize:vertical;background:#fbfcfe;outline:none;width:100%;min-height:430px;padding:12px;font-family:Cascadia Mono,SFMono-Regular,Consolas,monospace;font-size:.82rem;line-height:1.55}.prompt-preview textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px #0d94881f}.student-row,.monitor-row{grid-template-columns:1.2fr .7fr 1fr;align-items:center;gap:10px;padding:12px;display:grid}.progress-row{gap:8px;padding:12px;display:grid}.progress-row>div,.student-exam-analysis>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.analysis-class,.analysis-student{padding:0;overflow:hidden}.analysis-class summary,.analysis-student summary{cursor:pointer;justify-content:space-between;gap:12px;padding:13px 14px;display:flex}.analysis-students{padding:0 14px 14px}.analysis-student{background:#fff}.analysis-student .muted{padding:0 14px 14px}.student-exam-analysis{background:var(--surface-strong);gap:10px;margin:0 14px 14px;padding:12px;display:grid}.admin-metrics.compact{margin:0}@media (max-width:1120px){.exam-shell{grid-template-columns:minmax(0,1fr) 240px}}@media (max-width:820px){.auth-shell,.result-dashboard,.token-entry-panel,.admin-grid,.upload-grid,.admin-workbench,.content-grid.two,.content-grid.class-layout,.token-generator-form,.prompt-workspace{grid-template-columns:1fr}.auth-context{order:-1}.exam-shell{grid-template-columns:1fr}.question-nav{position:static}.nav-grid{grid-template-columns:repeat(8,minmax(34px,1fr))}.exam-topbar,.list-header,.results-header,.admin-header,.status-strip{flex-direction:column;align-items:stretch}.submit-button,.ghost-button{width:100%}.admin-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.classification-sidebar{position:static}.upload-row,.student-row,.monitor-row{grid-template-columns:1fr}}@media (max-width:560px){.auth-shell,.exam-list-shell,.results-shell,.admin-shell{width:min(100% - 20px,1180px)}.auth-panel,.auth-context,.exam-list-panel,.token-entry-panel,.admin-panel,.question-panel,.breakdown-panel,.review-section,.score-panel{padding:18px}.auth-context>div,.answer-compare,.form-pair,.admin-metrics{grid-template-columns:1fr}.nav-grid{grid-template-columns:repeat(5,minmax(34px,1fr))}.question-actions{flex-direction:column}.secondary-button{width:100%}}.essay-answer{gap:8px;display:grid}math-field.math-field-editor{border:1px solid var(--line);background:var(--surface);border-radius:10px;width:100%;min-height:140px;padding:12px 14px;font-size:1.05rem;line-height:1.6;display:block}math-field.math-field-editor:focus,math-field.math-field-editor:focus-within{outline:2px solid var(--accent,#0ea5e9);outline-offset:2px}.essay-hint{color:var(--muted);margin:0;font-size:.78rem}.essay-hint kbd{border:1px solid var(--line);background:var(--surface-strong);border-radius:4px;padding:0 5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem;display:inline-block}.math-latex-view{font-size:1.05rem;display:inline-block}.report-export-grid{grid-template-columns:1fr 1fr;gap:18px;margin-top:12px;display:grid}@media (max-width:720px){.report-export-grid{grid-template-columns:1fr}}.report-toggle-list{flex-wrap:wrap;gap:8px 16px;margin-top:6px;display:flex}.report-toggle{align-items:center;gap:6px;font-size:.88rem;display:inline-flex}.credentials-panel{border-left:3px solid var(--green,#047857)}.credentials-panel code{background:var(--surface-strong);border-radius:4px;padding:1px 6px;font-size:.85rem}.ai-prompt-output{border:1px solid var(--line);background:var(--surface-strong);resize:vertical;border-radius:10px;width:100%;min-height:320px;margin-top:12px;padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;line-height:1.5}.ai-steps{gap:10px;margin:8px 0 0;padding-left:0;list-style:none;display:grid}.ai-steps li{border-left:3px solid var(--accent,#0ea5e9);background:var(--surface);border-radius:0 8px 8px 0;padding:10px 14px;line-height:1.55}.ai-steps code{background:var(--surface-strong);border-radius:4px;padding:1px 6px;font-size:.85rem}.analyze-bar-track{background:var(--surface-strong);border-radius:999px;height:10px;position:relative;overflow:hidden}.analyze-bar-fill{background:linear-gradient(90deg,#0ea5e9,#06b6d4);border-radius:999px;height:100%;transition:width .3s}.analyze-bar-fill.strong{background:linear-gradient(90deg,#10b981,#22c55e)}.analyze-bar-fill.weak{background:linear-gradient(90deg,#f97316,#ef4444)}.analyze-histogram{gap:8px;display:grid}.analyze-day-bars{border:1px solid var(--line);background:var(--surface);border-radius:10px;grid-template-columns:repeat(30,1fr);align-items:end;gap:3px;height:140px;padding:8px 6px 4px;display:grid}.analyze-day-bars.analyze-score-buckets{grid-template-columns:repeat(10,1fr)}.analyze-day-col{flex-direction:column;justify-content:flex-end;align-items:center;gap:4px;height:100%;display:flex}.analyze-day-bar{background:linear-gradient(#0ea5e9,#0284c7);border-radius:4px 4px 0 0;width:100%;min-height:2px}.analyze-day-bar.score{background:linear-gradient(#6366f1,#4338ca)}.analyze-day-col span{color:var(--muted);white-space:nowrap;transform-origin:100% 0;height:14px;margin-top:4px;font-size:.62rem;transform:rotate(-45deg)}.analyze-bank-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:12px;display:grid}.analyze-bank-card{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:12px 14px}.analyze-bank-list{gap:6px;margin:8px 0 0;padding:0;list-style:none;display:grid}.analyze-bank-list li{grid-template-columns:1fr 1fr auto;align-items:center;gap:8px;font-size:.85rem;display:grid}.analyze-bank-list li strong{text-align:right}.capabilities-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px 14px;margin-top:8px;display:grid}.capabilities-row{border:1px solid var(--border,#e6e8ee);background:var(--surface-2,#fafbfc);cursor:pointer;border-radius:8px;align-items:flex-start;gap:10px;padding:10px 12px;transition:background-color 80ms,border-color 80ms;display:flex}.capabilities-row:hover{background:var(--surface-3,#f3f5f8);border-color:var(--border-strong,#c9ced6)}.capabilities-row input[type=checkbox]{flex-shrink:0;margin-top:3px}.capabilities-row-text{flex-direction:column;gap:2px;min-width:0;display:flex}.capabilities-row-text strong{font-weight:600}.capabilities-row-text code{color:var(--muted,#6b7280);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem}.capabilities-row-text small{color:var(--muted,#6b7280);font-size:.78rem;line-height:1.35}.capabilities-grid--compact{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:6px 10px}.capabilities-row--compact{align-items:center;gap:8px;padding:6px 10px}.capabilities-row--compact .capabilities-row-text{gap:0}.capabilities-row--compact .capabilities-row-text strong{font-weight:500}.capabilities-row--compact input[type=number]{flex-shrink:0;padding:4px 6px;font-size:.85rem}