:root{--ink:#282c35;--blue:#2d3c56;--night:#35446c;--sky:#5c849f;--stone:#a4b8c5;--orange:#cf8844;--paper:#eaeaea;--line:#c5ccd2;--white:#fff;--muted:#4b5665;--radius:18px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 Arial,Helvetica,sans-serif}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:var(--blue);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:4px}input,select,textarea{max-width:100%;border:1px solid #788797;background:#fff;border-radius:9px;padding:12px;color:var(--ink)}input:not([type=radio]):not([type=checkbox]),textarea{width:100%}textarea{min-height:95px;resize:vertical}input[type=checkbox],input[type=radio]{width:22px;height:22px;accent-color:var(--blue);vertical-align:middle}label{display:block;font-weight:600;margin:14px 0 5px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(28px,4vw,42px);line-height:1.15;letter-spacing:-.025em;margin-bottom:18px}h2{font-size:24px;line-height:1.3}h3{font-size:18px}small,.small{font-size:14px}.muted{color:var(--muted)}.eyebrow{text-transform:uppercase;font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--night);margin:0 0 15px}.brand{background:#fff;padding:21px max(22px,calc((100vw - 1320px)/2));display:flex;gap:26px;align-items:center;border-bottom:1px solid var(--line);flex-wrap:wrap;min-height:96px}.brand img{width:174px;height:auto;max-height:48px;object-fit:contain}.brand>span{font-size:11px;letter-spacing:.14em;border-left:1px solid var(--line);padding-left:25px;color:var(--muted)}.brand nav{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.brand nav button,.brand nav a{font-size:14px}.skip{position:absolute;left:12px;top:-120px;z-index:100;background:#fff;padding:12px}.skip:focus{top:12px}main{max-width:760px;margin:38px auto;padding:0 20px;min-height:calc(100vh - 250px)}.admin main{max-width:1240px}.presenter main{max-width:1500px}.site-footer{max-width:1320px;margin:40px auto 0;padding:20px 24px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:20px}.card{background:#fff;border:1px solid #d4d9de;border-radius:var(--radius);padding:28px;margin-bottom:22px}.hero{border-top:5px solid var(--orange);padding:36px}.stack>*+*{margin-top:16px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.btn{border:1px solid var(--blue);color:#fff;background:var(--blue);padding:11px 18px;min-height:46px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:600}.btn:hover{background:var(--night)}.btn.secondary{background:white;color:var(--blue)}.btn.secondary:hover,.btn.ghost:hover{background:var(--paper)}.btn.ghost{border-color:transparent;background:transparent;color:var(--blue)}.btn.danger{background:var(--ink);color:#fff;border:2px solid var(--orange)}.btn.small{font-size:13px;padding:7px 12px;min-height:40px}.full{width:100%}.notice{border:2px solid var(--orange);background:#fff;padding:16px 22px;max-width:1180px;margin:20px auto}.notice[hidden],*[hidden]{display:none!important}.notice:empty{display:none}.banner{background:#f7f2eb;border-left:4px solid var(--orange);padding:15px 18px;margin:18px 0;color:var(--ink);font-size:14px}.loading{padding:30px;text-align:center;color:var(--muted)}.progress-line{display:flex;justify-content:space-between;font-size:14px;margin-bottom:10px;gap:14px}.progress{height:5px;background:#d5dce2;border-radius:10px;overflow:hidden;margin:0 0 30px}.progress>i{display:block;height:100%;background:var(--blue)}.question-title{font-size:clamp(23px,3.2vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.018em;margin-bottom:22px}.source-short{font-size:12px;color:var(--muted);margin:15px 0}.answers{display:grid;gap:12px;margin:22px 0}.answer{display:flex;text-align:left;gap:14px;align-items:center;border:1px solid #8291a0;background:white;color:var(--ink);padding:17px;border-radius:12px;width:100%;line-height:1.4;min-height:65px}.answer:hover:not(:disabled){background:#eef1f5;border-color:var(--blue)}.answer .letter{display:inline-flex;flex:0 0 31px;width:31px;height:31px;border:1px solid #a4b8c5;align-items:center;justify-content:center;border-radius:8px;font-weight:700;color:var(--blue);font-size:13px}.answer.selected{border:2px solid var(--blue);background:#eef1f5}.answer.correct{border:2px solid var(--blue);background:#eef1f5}.answer.static{cursor:default}.badge{display:inline-flex;border:1px solid #b9c4cf;color:var(--blue);border-radius:30px;padding:3px 10px;font-size:12px;white-space:nowrap;font-weight:600}.badge.closed{background:var(--paper)}.badge.running{border-color:var(--blue);background:var(--blue);color:#fff}.badge.lobby{border-color:var(--orange)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:22px 0}.stat{background:#fff;border:1px solid #c9d1d8;border-radius:14px;padding:18px}.stat .value{display:block;font-weight:700;font-size:34px;letter-spacing:-.035em;line-height:1.2;color:var(--blue);margin:5px 0}.stat .label{font-size:13px;color:var(--muted)}.stat .unit{font-size:14px;font-weight:400;letter-spacing:0}.big-score{font-size:clamp(55px,12vw,82px);font-weight:700;color:var(--blue);line-height:1.1}.big-score span{font-size:25px;color:var(--muted)}.split{display:grid;grid-template-columns:1fr;gap:22px}.bar-row{margin:15px 0}.bar-label{display:flex;justify-content:space-between;gap:16px;line-height:1.4;font-size:14px;margin-bottom:6px}.bar-track{height:13px;background:var(--paper);border-radius:4px;overflow:hidden}.bar-fill{height:100%;background:var(--blue);min-width:0}.bar-fill.second{background:var(--sky)}.bar-fill.accent{background:var(--orange)}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{border-bottom:1px solid #d1d7dd;padding:13px 10px;text-align:left;vertical-align:middle}th{font-size:12px;text-transform:uppercase;letter-spacing:.035em;color:var(--muted);background:#f5f6f7}th.number,td.number{text-align:right;font-variant-numeric:tabular-nums}td.wrap{min-width:220px}details{margin:14px 0}summary{cursor:pointer;font-weight:600;padding:10px 0}.review-item{border-top:1px solid var(--line);padding-top:22px;margin-top:22px}.review-item .question-title{font-size:21px}.result-label{font-size:13px;font-weight:bold;color:var(--blue);margin-left:auto;flex-shrink:0}.explanation{border-left:3px solid var(--orange);padding:4px 0 4px 16px;margin-top:18px}.source-full{font-size:13px;color:var(--muted);overflow-wrap:anywhere;white-space:pre-line}.media-box{margin:18px 0}.image-button{display:block;border:1px solid #a4b8c5;padding:0;border-radius:12px;overflow:hidden;background:var(--paper);width:100%}.question-image{display:block;width:100%;max-height:350px;object-fit:contain;background:#f6f6f6}.media-note{font-size:12px;color:var(--muted);margin:5px 0}.text-equivalent{font-size:14px;color:var(--muted)}.video-frame{border:0;width:100%;aspect-ratio:16/9;border-radius:10px;display:block}.video-card{padding:18px;border:1px solid var(--line);border-radius:12px;background:#f7f8f9}.form-grid{display:grid;grid-template-columns:1fr;gap:20px}.form-section{margin:20px 0}.editor-option{border:1px solid var(--line);padding:14px;margin:12px 0;border-radius:12px}.editor-option label.inline{display:inline-flex;align-items:center;gap:8px;font-weight:400;font-size:13px;margin:8px 10px 0 0}.toolbar{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.toolbar>div{flex:1;min-width:160px}.toolbar label{font-size:13px}.empty{padding:36px 12px;text-align:center}.wait-icon{width:68px;height:68px;border:3px solid var(--stone);border-top-color:var(--blue);border-radius:50%;display:grid;place-items:center;margin:5px 0 28px;font-size:29px;color:var(--blue)}.center{text-align:center}.center .wait-icon{margin-left:auto;margin-right:auto}.login{max-width:480px;margin:30px auto}.long-link{word-break:break-all;font-size:13px}.presenter .question-title{font-size:clamp(28px,2.7vw,43px)}.presenter .present-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,1fr);gap:32px}.presenter .card{padding:32px}.presenter .answer{font-size:19px;min-height:72px}.presenter .question-image{max-height:430px}.presenter .source-short{font-size:14px}.presenter .present-controls{position:sticky;bottom:12px;background:white;border:1px solid var(--line);border-radius:12px;padding:10px 18px;z-index:5;box-shadow:0 4px 20px #282c3514}.qr{width:260px;height:260px;max-width:100%;display:block;background:white}.join-grid{display:grid;grid-template-columns:1fr;gap:30px;align-items:center}.qr-panel{background:#fff;padding:20px;border-radius:18px;display:inline-flex;flex-direction:column;align-items:center;border:1px solid var(--line)}.join-code{font-size:25px;letter-spacing:.15em;font-weight:700;margin:12px 0 0}.pulse{display:inline-block;width:8px;height:8px;background:var(--sky);border-radius:50%;margin-right:6px}.chart-caption{font-size:12px;color:var(--muted)}.hist{display:flex;align-items:flex-end;gap:3px;height:140px;margin:25px 0 8px}.hist-cell{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:stretch;min-width:0}.hist-bar{background:var(--blue);min-height:0}.hist-num{text-align:center;font-size:10px;line-height:1.6}.hist-count{text-align:center;font-size:10px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:18px;padding:24px;max-width:min(1100px,94vw);max-height:92vh}dialog::backdrop{background:#282c35bb}dialog img{display:block;max-width:100%;max-height:75vh;object-fit:contain}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.result-detail{margin:20px 0;border:1px solid var(--line);border-radius:10px;padding:16px}.compare-key{display:flex;gap:20px;font-size:13px;margin-bottom:15px}.compare-key i{display:inline-block;width:14px;height:14px;background:var(--blue);margin-right:7px}.compare-key .b{background:var(--sky)}
@media(min-width:800px){.split{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr 1fr}.join-grid{grid-template-columns:1fr auto}.hero{padding:42px}.admin .overview{grid-template-columns:2fr 1fr}}
@media(max-width:760px){.brand{padding:18px 20px;gap:15px;min-height:78px}.brand img{width:145px}.brand>span{font-size:9px;padding-left:14px}.brand nav{width:100%;margin-left:0}.card{padding:22px 19px}.hero{padding:27px 22px}main{margin-top:24px}.answers{gap:10px}.answer{padding:14px 12px;min-height:64px}.site-footer{font-size:11px}.presenter .present-grid{grid-template-columns:1fr}.presenter .card{padding:22px}.presenter .answer{font-size:16px}.result-label{font-size:11px;max-width:80px;white-space:normal}.btn{min-height:46px}.stat .value{font-size:29px}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.toolbar>div{min-width:130px}.question-image{max-height:270px}}
@media(prefers-reduced-motion:no-preference){.answer,.btn{transition:background .12s,border-color .12s}.bar-fill{transition:width .3s ease}}
@media print{.brand nav,.actions,.present-controls,.site-footer{display:none}body{background:#fff}.card{break-inside:avoid}.admin main{max-width:none}details:not([open])>*:not(summary){display:block}}

/* The supplied logo is the light variant: preserve its original colors. */
.brand{background:var(--ink);border-bottom-color:var(--blue)}
.brand>span{color:var(--paper);border-left-color:var(--sky)}
.brand .btn.ghost{color:var(--paper)}.brand .btn.ghost:hover{background:var(--blue)}
#main h1[tabindex="-1"]:focus,#main h2[tabindex="-1"]:focus{outline:none}
.present-question-body{display:grid;gap:24px;align-items:start}.present-question-body>*{min-width:0}
.present-question-body .answers{margin-top:4px}
@media(min-width:1000px){
.presenter main{margin:24px auto 12px;max-width:1700px}
.presenter .brand{min-height:76px;padding-top:14px;padding-bottom:14px}
.presenter .question-title{font-size:clamp(25px,2.15vw,36px);line-height:1.22;margin-bottom:20px}
.presenter .present-grid{grid-template-columns:minmax(0,3fr) minmax(240px,1fr);gap:20px;align-items:start}
.presenter .present-grid>.card{padding:26px;margin-bottom:16px}
.presenter .present-question-body.has-media{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}
.presenter .media-box{margin-top:4px;margin-bottom:8px}.presenter .question-image{max-height:36vh}
.presenter .answer{font-size:clamp(16px,1.25vw,20px);min-height:60px;padding:12px;gap:12px}
.presenter .source-short{font-size:12px;margin:8px 0 0}.presenter .answers{gap:10px;margin-bottom:6px}
.presenter .text-equivalent{font-size:13px}.presenter .present-controls{position:sticky;bottom:8px}
.presenter .explanation{font-size:17px}.presenter .site-footer{margin-top:18px}
}