*{box-sizing:border-box}body{margin:0;background:var(--ground);color:var(--ink);font:15px/1.55 var(--sans)}a{color:inherit}button,input,select,textarea{font:inherit}button,a,input,select{touch-action:manipulation}button,select{cursor:pointer}button{background:transparent;border:1px solid var(--line);padding:9px 14px;color:inherit}button:hover{border-color:var(--trace);color:var(--trace)}button:disabled{opacity:.45;cursor:default}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--trace);outline-offset:4px}input,select{color:var(--ink);background:var(--ground);border:1px solid var(--line);padding:10px 12px;border-radius:0}input[type=search]{width:100%;min-width:150px}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--mono);font-weight:400}h1{font-size:clamp(42px,5.4vw,72px);line-height:1.06;margin-bottom:22px}h2{font-size:29px;line-height:1.15}h3{font-size:23px;line-height:1.3}p{margin-bottom:16px}main{max-width:1440px;margin:auto;padding:0 5% 70px;min-height:75vh}.task-hero{padding:68px 0 40px;display:flex;justify-content:space-between;gap:40px;align-items:flex-end}.eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--trace);margin-bottom:18px}.lede{font:20px/1.5 var(--mono);color:var(--muted);max-width:650px;margin-bottom:0}.collection-number{font:60px/1 var(--mono);text-align:right}.collection-number span{display:block;font:11px/1.5 var(--sans);text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-top:12px}.family-nav{display:flex;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 0 30px;flex-wrap:wrap}.family-nav button{border:0;border-bottom:2px solid transparent;font-size:12px;padding:18px 13px;flex:1;white-space:nowrap}.family-nav button:first-child{flex:.8}.family-nav button[aria-pressed=true]{border-bottom-color:var(--trace);color:var(--trace)}.count{color:var(--muted);font-size:10px;margin-left:8px}.toolbar{display:grid;grid-template-columns:1fr 240px;gap:12px;margin-bottom:22px}.toolbar label,.small-label{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);display:block}.toolbar input,.toolbar select{display:block;margin-top:7px;width:100%;text-transform:none;letter-spacing:0;font-size:13px}.result-count{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:22px 0}.task-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.task-card{border:1px solid var(--line);padding:26px 28px 22px;text-decoration:none;display:flex;flex-direction:column;min-height:280px;transition:background .15s,border-color .15s}.task-card:hover{background:var(--raised);border-color:var(--trace)}.card-meta{display:flex;justify-content:space-between;gap:12px;margin-bottom:22px;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.card-title{font-size:27px;margin-bottom:18px;max-width:510px}.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 20px}.tag{font:10px/1.5 var(--sans);border:1px solid var(--line);padding:3px 7px;color:var(--muted)}.card-bottom{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;gap:10px;align-items:flex-end;justify-content:space-between}.card-scores{display:flex;gap:20px;flex-wrap:wrap}.score-pair{font-size:10px;color:var(--muted)}.score-pair b{font:20px/1.4 var(--mono);display:block;color:var(--ink)}.card-arrow{font-size:23px;color:var(--trace)}.empty,.loading{padding:50px 0;color:var(--muted)}.notice{background:var(--sunken);border-left:2px solid var(--trace);padding:16px 20px;font-size:12px;line-height:1.6;margin:20px 0}.error{color:var(--trace);white-space:pre-wrap}.back{display:inline-block;margin:30px 0 26px;font-size:12px;color:var(--muted);text-decoration:none}.detail-heading{display:flex;justify-content:space-between;gap:24px;margin-bottom:26px}.detail-heading h1{font-size:clamp(32px,3.2vw,46px);max-width:850px;margin-bottom:16px}.detail-heading .eyebrow{margin-bottom:12px}.task-id{font:10px/1.8 var(--mono);color:var(--muted);overflow-wrap:anywhere}.task-actions{display:flex;gap:8px;flex-wrap:wrap;align-content:start;justify-content:flex-end;min-width:180px}.task-actions a{font-size:11px;padding:9px 12px;border:1px solid var(--line);text-decoration:none}.run-bar{display:flex;align-items:flex-end;gap:26px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:22px}.run-select{min-width:220px}.run-select select{display:block;width:100%;margin-top:6px;font-size:12px}.run-metrics{display:flex;gap:28px;flex-wrap:wrap;flex:1}.run-metric span{font-size:10px;text-transform:uppercase;letter-spacing:.05em;display:block;color:var(--muted)}.run-metric b{font:26px/1.5 var(--mono);font-weight:400}.run-metric em{font:11px var(--sans);color:var(--muted);display:block}.brief{border:1px solid var(--line);margin:20px 0 26px;position:sticky;top:0;background:var(--ground);z-index:2}.brief summary{padding:13px 18px;font:14px var(--mono);cursor:pointer}.brief pre{padding:0 18px 16px;margin:0;white-space:pre-wrap;font:12px/1.7 var(--sans);max-height:250px;overflow:auto}.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:25px;align-items:start}.panel-heading,.review-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:15px;min-height:38px}.panel-heading h2,.review-heading h2{margin:0;font-size:27px}.panel-heading span{font-size:10px;color:var(--muted)}.review-heading select{font-size:11px;max-width:160px;padding:7px}.tabs{display:flex;border:1px solid var(--line);border-bottom:0;overflow-x:auto}.tabs button{border:0;border-bottom:2px solid transparent;font-size:10px;padding:12px 10px;flex:1}.tabs button[aria-selected=true]{border-bottom-color:var(--trace);color:var(--trace);background:var(--sunken)}.file-choice{padding:12px;border:1px solid var(--line);border-bottom:0}.file-choice select{width:100%;font:11px var(--sans)}.file-info{padding:10px 12px;display:flex;gap:12px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-bottom:0;font:10px/1.6 var(--mono);color:var(--muted);overflow-wrap:anywhere}.viewer{height:650px;overflow:auto;border:1px solid var(--line);background:var(--raised);position:relative}.viewer iframe{width:100%;height:100%;border:0}.viewer img{max-width:100%;height:auto}.viewer pre{font:11px/1.65 var(--mono);margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.source-line{display:block;min-height:1.65em;padding:0 12px 0 46px;position:relative}.source-line:before{content:attr(data-line);position:absolute;left:6px;width:30px;text-align:right;color:var(--line-strong);user-select:none}.source-line.hit{background:#e0edfa}.file-footer{border:1px solid var(--line);border-top:0;display:flex;justify-content:space-between;padding:10px 12px;font-size:10px;gap:14px}.file-footer a{color:var(--trace)}.file-footer a[aria-disabled=true]{pointer-events:none;opacity:.4}.viewer-toggle{display:flex;gap:4px}.viewer-toggle button{font:10px var(--sans);padding:3px 7px}.criteria-summary{font-size:11px;color:var(--muted);padding:8px 0 15px}.criterion{border:1px solid var(--line);margin-bottom:10px}.criterion summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:12px;padding:15px 17px}.criterion summary::-webkit-details-marker{display:none}.criterion summary:after{content:'+';color:var(--muted)}.criterion[open] summary:after{content:'−'}.criterion-title{font:17px/1.4 var(--mono);margin-top:7px}.criterion-id{font:9px var(--mono);color:var(--muted)}.criterion-meta{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.pill{font:9px/1.7 var(--sans);text-transform:uppercase;letter-spacing:.03em;padding:1px 6px;background:var(--sunken);white-space:nowrap}.pill.pass,.pill.correct{color:var(--pass);background:#e3eadf}.pill.fail,.pill.incorrect{color:var(--trace);background:#efdfd6}.pill.partial{color:#805b20;background:#eee4c9}.criterion-body{border-top:1px solid var(--line);padding:16px 17px;font-size:12px;line-height:1.65}.criterion-body h3{font:10px var(--sans);text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:16px 0 8px}.criterion-body h3:first-child{margin-top:0}.criterion-body p{white-space:pre-wrap}.evidence-link{border:0;border-bottom:1px solid var(--line);padding:0;font-size:11px;text-align:left;overflow-wrap:anywhere;color:var(--trace)}.evidence{padding:9px 0}.evidence small{display:block;color:var(--muted)}.judgment{background:var(--sunken);padding:12px;margin-top:16px}.judgment pre{font:10px/1.5 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere}.quality-detail{border-top:1px solid var(--line);margin-top:30px;padding-top:20px;font-size:12px}.quality-detail summary{cursor:pointer;font-family:var(--mono);font-size:18px}.quality-detail p{padding-top:12px;color:var(--muted)}.stream-event{padding:16px;border-bottom:1px solid var(--line)}.stream-event header{display:flex;justify-content:space-between;font-size:10px;color:var(--trace);margin-bottom:10px}.stream-event pre{font:11px/1.6 var(--mono)}.stream-nav{padding:12px;display:flex;justify-content:space-between;align-items:center;font-size:10px}#toast{position:fixed;bottom:20px;right:25px;max-width:500px;padding:12px 18px;background:var(--ink);color:var(--ground);font-size:12px;display:none;z-index:10}#toast.show{display:block}
@media(min-width:1500px){.viewer{height:740px}}@media(max-width:1000px){.family-nav button{flex:auto;font-size:11px}.toolbar{grid-template-columns:1fr 220px}.workspace{gap:18px}.run-bar{gap:18px}.run-metrics{gap:16px}.run-metric b{font-size:22px}.card-title{font-size:23px}.task-card{padding:22px}}@media(max-width:760px){.task-hero{padding-top:42px}.collection-number{font-size:44px}.lede{font-size:18px}.toolbar{grid-template-columns:1fr}.task-grid,.workspace{grid-template-columns:1fr}.task-card{min-height:250px}.detail-heading{display:block}.task-actions{justify-content:flex-start;margin-top:20px}.run-bar{display:block}.run-metrics{margin-top:15px}.viewer{height:520px}.criteria-panel{margin-top:25px}.brief{position:static}.family-nav button{padding:13px 8px}.collection-number{display:none}.run-select{max-width:none}.file-info{font-size:9px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}.task-hero{padding-top:52px}.task-hero h1{font-weight:300;letter-spacing:-.055em;font-size:clamp(40px,4.8vw,62px)}.lede{font:17px/1.6 var(--sans)}.eyebrow,.small-label,.toolbar label,.family-nav button,.result-count,.tag,.card-meta{font-family:var(--mono)}.family-nav button{font-size:10px;padding-left:10px;padding-right:10px}.task-grid{gap:16px}.task-card{position:relative;background:var(--raised);clip-path:polygon(14px 0,100% 0,100% 100%,0 100%,0 14px);box-shadow:0 1px 0 #10151c0d,0 8px 18px -10px #10151c22}.task-card:before{content:'';position:absolute;left:-1px;top:-1px;width:14px;height:14px;background:linear-gradient(to bottom right,transparent calc(50% - .75px),var(--line) calc(50% - .75px),var(--line) calc(50% + .75px),transparent calc(50% + .75px))}.task-card:hover{background:#f7fafc}.card-title{font-family:var(--sans);font-weight:600;font-size:23px;letter-spacing:-.015em}.card-meta{font-size:9px}.card-scores{gap:22px}.score-pair b{font-family:var(--mono);font-weight:300;font-size:22px;color:var(--trace)}.score-pair{font-size:10px}.collection-number{font-weight:300;color:var(--trace)}.tag{font-size:9px}.notice{background:var(--lum5);border-left-color:var(--trace)}.run-bar{background:var(--n-ground);color:var(--n-ink);padding:20px;clip-path:polygon(15px 0,100% 0,100% 100%,0 100%,0 15px)}.run-bar .small-label,.run-metric span,.run-metric em{color:var(--n-muted)}.run-metric b{font-weight:300;color:var(--n-trace)}.run-select select{background:var(--n-raised);color:var(--n-ink);border-color:var(--n-line)}.detail-heading h1{font-weight:300;letter-spacing:-.04em}.panel-heading h2,.review-heading h2{font-size:22px;font-weight:400;letter-spacing:-.03em}.criterion-title{font-family:var(--sans);font-weight:600;font-size:15px}.criterion summary{background:var(--raised)}.criterion-body{background:var(--raised)}.criterion-id,.pill,.criteria-summary{font-family:var(--mono)}.pill.pass,.pill.correct{color:var(--pass);background:#e0f0ef}.pill.fail,.pill.incorrect{color:var(--fail);background:#f9e5e8}.pill.partial{color:#70521a;background:#f2e8d2}.judgment{border:1px solid var(--line);background:var(--ground)}.file-footer{background:var(--raised)}.stream-event header{font-family:var(--mono)}.stream-event:nth-child(even){background:var(--ground)}@media(max-width:760px){.task-hero{padding-top:35px}.family-nav button{font-size:9px}.run-bar{padding:18px}.run-metric b{font-size:22px}.card-title{font-size:21px}.detail-heading h1{font-size:30px}}

.tag.biology{color:var(--trace);background:var(--lum5);border-color:var(--line)}

.grading-overview{border-top:1px solid var(--line);padding:22px 0;margin-bottom:12px}.grading-overview h2{font-size:22px}.grading-overview p{font-size:13px}

.task-actions button{font-size:11px;padding:9px 12px}

/* Animation is separate from the document and grading workspace. */
.animation-section{border:1px solid var(--line);margin:20px 0 26px;background:var(--raised)}
.animation-section summary{padding:13px 18px;font:14px var(--mono);cursor:pointer}
.animation-section[open] summary{border-bottom:1px solid var(--line)}
#animation-player iframe{display:block;width:100%;height:560px;border:0}
@media(max-width:760px){#animation-player iframe{height:480px}}

.brief{position:static}

/* Share the main website's shell and tokens; keep viewer-specific layout here. */
body { font: 16px/25px var(--text); }
#app { width: min(var(--page), calc(100% - 32px)); max-width: var(--page); padding: 0 0 54px; }
.task-hero { min-height: 0; padding: 54px 0 40px; }
.task-hero h1 { font: 300 44px/48px var(--mono); letter-spacing: -.04em; }
.task-hero .lede { max-width: 700px; font: 18px/28px var(--text); }
.collection-number { font-size: 44px; }
.task-card { box-shadow: none; }
.task-card .card-title { font: 600 24px/30px var(--text); }
.workspace > * { min-width: 0; }
.detail-heading h1 { text-wrap: pretty; }
@media (max-width: 760px) {
  .task-hero { padding: 36px 0 28px; }
  .task-hero h1 { font-size: 36px; line-height: 42px; }
  .task-card .card-title { font-size: 21px; line-height: 28px; }
}