:root{--ink:#17243a;--muted:#748096;--blue:#315de7;--line:#e7eaf0;--soft:#f6f8fb}*{box-sizing:border-box}body{margin:0;background:#f8f9fc;color:var(--ink);font:14px/1.65 system-ui,-apple-system,'PingFang SC',sans-serif}.lab{max-width:1176px;margin:auto;padding:32px 28px 60px}.lab a{color:var(--blue);text-decoration:none}.lab a:hover{text-decoration:underline}.lab h1{font-size:26px;font-weight:650;letter-spacing:-.5px;margin:7px 0 0;line-height:1.4}.lab h2{font-size:17px;font-weight:650;margin:0}.lab h3{font-size:14px;font-weight:650;margin:0 0 10px}.lab p{margin:7px 0 12px}.lab-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:26px}.eyebrow{display:flex;gap:8px;font-size:12px;color:var(--muted)}.heading-status{text-align:right;font-size:12px}.online{font-size:12px;color:#41765a}.online:before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;margin-right:7px}.lab-tabs{display:flex;gap:28px;border-bottom:1px solid var(--line);margin-bottom:25px}.lab .lab-tabs button{border-radius:0;background:none;color:var(--muted);padding:0 1px 13px;border-bottom:2px solid transparent;font-size:14px;font-weight:500;white-space:nowrap}.lab .lab-tabs [aria-selected=true]{color:var(--blue);border-bottom-color:var(--blue)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:22px}.surface{background:white;border:1px solid var(--line);border-radius:9px;padding:24px;min-width:0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.section-heading p{margin:5px 0 0}.lab .muted,.lab small{font-size:12px;color:var(--muted)}.lab button,.lab .button{font:inherit;border:1px solid transparent;border-radius:6px;background:var(--blue);color:white;padding:9px 15px;cursor:pointer;font-weight:550;line-height:1.4}.lab button:hover{filter:brightness(.97)}.lab button:disabled{opacity:.45;cursor:not-allowed}.lab button.secondary{background:white;border-color:#dce2eb;color:var(--ink)}.lab button.text-button,.lab .code-box button{padding:2px 0;background:none;color:var(--blue);border:0;font-size:12px;font-weight:500}.lab input,.lab select,.lab textarea{font:inherit;color:var(--ink);background:white;border:1px solid #dce2eb;border-radius:6px;padding:9px 10px;width:100%;min-width:0}.lab label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}.lab textarea{resize:vertical;line-height:1.8;min-height:390px}.lab :focus-visible{outline:3px solid #a9bfff;outline-offset:3px}.drop-zone{height:112px;border:1px dashed #cdd5e3;border-radius:7px;background:#fcfdff;display:flex!important;align-items:center;justify-content:center;flex-direction:column;gap:4px;position:relative;overflow:hidden;color:var(--ink)!important;cursor:pointer}.drop-zone strong{font-size:14px;font-weight:550;max-width:90%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.drop-zone input{position:absolute;inset:0;opacity:0;cursor:pointer}.drop-zone:focus-within,.drop-zone.dragover{border-color:var(--blue);background:#f0f5ff}.file-symbol{font-size:21px;line-height:1.2;color:#7c91b7;margin-bottom:4px}.upload-actions{display:flex;gap:14px;align-items:center;margin:14px 0 24px}.upload-actions progress{height:5px;width:65px;accent-color:var(--blue)}.run-row{display:flex;align-items:end;gap:12px;padding:17px 0 19px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.run-row>div{flex:1;min-width:0}.run-row button{white-space:nowrap;margin-bottom:1px}.model-list-heading{margin:19px 0 5px}.empty{color:var(--muted);font-size:13px;padding:18px 0;line-height:1.9}.badge{display:inline-block;border:1px solid #e2e7f0;background:#f6f8fb;border-radius:4px;color:#63718a;font-size:11px;padding:2px 6px;white-space:nowrap}.badge.active{background:#edf4ff;color:#315de7}.badge.failed{background:#fff1ed;color:#a14d3c}.lab details{margin-top:14px}.lab summary{cursor:pointer;font-size:12px;color:var(--muted);font-weight:500}.technical{border-top:1px solid var(--line);padding-top:14px}.lab pre,.hash{font:12px/1.8 ui-monospace,SFMono-Regular,monospace;overflow-wrap:anywhere;white-space:pre-wrap;color:#62718a}.hash{font-size:11px;line-height:1.6}.lab table{border-collapse:collapse;width:100%;font-size:12px}.lab td,.lab th{padding:11px 9px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}.lab th{color:var(--muted);font-weight:500;background:#fafbfd;white-space:nowrap}.lab .model-table td{padding:10px 5px}.lab .model-table td:first-child{max-width:190px;overflow-wrap:anywhere}.lab td button{padding:4px 8px!important;font-size:12px!important}.table-scroll{overflow-x:auto}.record-table{min-width:690px}.record-table input[type=checkbox]{width:16px;height:16px;accent-color:var(--blue)}.model-controls{display:flex;gap:8px;align-items:center;white-space:nowrap}.score-total{font-size:38px;letter-spacing:-1px;font-weight:600;line-height:1.2;margin:10px 0 18px}.score-total span{font-size:16px;font-weight:400;letter-spacing:0;color:var(--muted);margin-left:4px}.score-lines{display:grid;gap:9px;font-size:12px}.score-line{display:flex;justify-content:space-between;gap:10px}.score-line strong{font-weight:550}.recent-thumb{width:100%;height:auto;border-radius:5px;margin:18px 0 5px}.recent-bottom{border-top:1px solid var(--line);margin-top:15px;padding-top:13px;font-size:12px}.lab-footer{display:flex;justify-content:space-between;gap:15px;font-size:11px;color:#8590a3;margin:20px 1px}.page-section{margin:4px 0 20px}.spaced{margin-top:22px}.spaced-title{margin-top:24px!important}.resources{padding:0 24px}.resource-row{padding:16px 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 20px;border-bottom:1px solid var(--line)}.resource-row:last-child{border:0}.resource-row strong{font-weight:550;font-size:13px}.resource-row details{grid-column:1/-1;margin:0}.resource-row a{align-self:center;grid-column:2;grid-row:1/3;font-size:12px}.dataset-examples{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.dataset-examples figure{margin:0}.dataset-examples img{width:100%;height:auto;border:1px solid var(--line);border-radius:6px}.dataset-examples figcaption strong{display:block;font-size:13px;margin-top:8px}.dataset-examples figcaption span{font-size:12px;color:var(--muted)}.content-columns{display:grid;grid-template-columns:1fr 1fr;gap:22px}.steps{padding-left:19px;margin:0}.steps>li{padding-left:5px;margin-bottom:23px}.steps p{font-size:12px;color:var(--muted)}.code-box{background:#f7f9fc;border-radius:6px;padding:12px;margin:10px 0;position:relative}.code-box pre{margin:0;padding-top:15px}.lab .code-box button{position:absolute;right:10px;top:6px}.tree{background:#f8f9fb;padding:13px;border-radius:5px}.rubric{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.rubric strong{font-size:24px;margin-right:8px;font-weight:600}.rubric span{font-size:12px}.rubric p{font-size:12px;color:var(--muted)}.filters{display:flex;align-items:end;gap:16px;margin-bottom:20px}.filters label{flex:1}.filters label:nth-child(2){max-width:160px}.filters input,.filters select{margin-top:5px}.filter-action{margin-bottom:5px}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}.help-grid p{color:var(--muted);font-size:12px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin:18px 0}.metric{padding:0 16px;border-right:1px solid var(--line);font-size:12px;color:var(--muted)}.metric:first-child{padding-left:0}.metric:last-child{border:0}.metric strong{font-size:25px;font-weight:550;display:block;color:var(--ink);margin-top:3px}.diagnostic-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:18px}.diagnostic-grid figure{margin:0}.diagnostic-grid img{width:100%;height:auto;border-radius:5px}.diagnostic-grid figcaption{font-size:11px;color:var(--muted)}.sample-filters{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 10px}.sample-filters label{min-width:130px;flex:1}.sample-filters select{margin-top:5px}.sample-table{min-width:800px}.pagination{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:15px 0}.report-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px}.report-tools{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0 20px}.report-tools button{font-size:12px;padding:6px 9px}.character-count{color:var(--muted);font-size:11px;text-align:right;margin-top:5px}.report-checklist{padding-left:17px;font-size:12px;color:var(--muted)}.report-checklist li{margin-bottom:10px}.save-row{display:flex;gap:14px;align-items:center;margin-top:14px}.report-row{padding:12px 0;border-bottom:1px solid var(--line)}.report-row:last-child{border:0}.report-row button{padding:0!important;background:none!important;color:var(--ink)!important;font-size:13px;text-align:left}.report-row small{display:block;margin-top:4px}#message:empty{display:none}#message{margin:0 0 18px;padding:10px 13px;border:1px solid #dce6f7;border-radius:6px;background:#f1f6ff;font-size:12px}.error-note{padding:13px;background:#fff7f2;border-radius:6px;color:#8d5543}.job-progress{margin-top:10px;width:100%;height:5px;accent-color:var(--blue)}.comparison-note{color:var(--muted);font-size:12px}.sample-block{margin-top:24px}[hidden]{display:none!important}@media(max-width:900px){.workspace{grid-template-columns:minmax(0,1fr) 270px;gap:16px}.surface{padding:19px}.lab{padding:25px 20px 50px}.lab h1{font-size:23px}.report-layout{grid-template-columns:1fr}.report-layout>aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.report-layout>aside>.spaced{margin:0}.content-columns{gap:16px}}@media(max-width:700px){.lab{padding:22px 16px 45px}.workspace,.content-columns,.dataset-examples,.diagnostic-grid,.help-grid,.report-layout>aside{grid-template-columns:1fr}.lab-heading{align-items:start;gap:12px;margin-bottom:23px}.heading-status{max-width:125px;font-size:10px}.lab h1{font-size:21px;max-width:235px}.eyebrow{font-size:11px}.lab-tabs{gap:23px;overflow:auto;scrollbar-width:none}.lab .lab-tabs button{font-size:13px}.lab-footer{flex-direction:column;gap:5px}.upload-actions{gap:10px}.upload-actions progress{width:35px}.upload-actions .muted{font-size:10px}.section-heading{align-items:start}.section-heading .text-button{white-space:nowrap;font-size:11px}.recent{margin-top:2px}.recent-thumb{max-height:150px;object-fit:contain;background:#f7f9fc}.filters{flex-wrap:wrap;gap:10px}.filters label:first-child{min-width:180px}.filter-action{width:100%;margin-top:5px}.metrics{grid-template-columns:1fr 1fr;gap:16px}.metric:nth-child(3){padding-left:0}.metric:nth-child(2){border:0}.rubric{grid-template-columns:1fr;gap:8px}.report-layout>aside>.spaced{margin-top:0}.dataset-examples img{max-height:160px;object-fit:cover}.lab .model-table td:first-child{max-width:150px}.model-controls{white-space:normal;flex-wrap:wrap}.run-row{gap:10px}.run-row button{padding:10px}.report-tools button{font-size:11px}}

@media(max-width:700px){.lab-heading{flex-direction:column;gap:10px}.lab h1{max-width:none}.heading-status{max-width:none;text-align:left;display:flex;flex-wrap:wrap;gap:6px 12px}.heading-status #login-state{font-size:10px}}

/* Results stay compact until students choose a section. */
.result-disclosure{margin:0}.result-disclosure>summary,.result-section>summary{display:flex;align-items:center;gap:10px;list-style:none;cursor:pointer;min-height:44px}.result-disclosure>summary::-webkit-details-marker,.result-section>summary::-webkit-details-marker{display:none}.result-disclosure>summary:before,.result-section>summary:before{content:'›';color:var(--muted);font-size:20px;line-height:1;transform:rotate(0);transition:transform .15s}.result-disclosure[open]>summary:before,.result-section[open]>summary:before{transform:rotate(90deg)}.result-disclosure>summary strong{font-size:15px;font-weight:600}.fold-hint{margin-left:auto;font-size:12px;color:var(--blue);white-space:nowrap}.result-content{padding-top:10px}.result-section{border-top:1px solid var(--line);padding:8px 0;margin:0}.result-section>summary strong{font-size:13px;font-weight:550}.result-section>pre{max-height:400px;overflow:auto}.result-actions{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.result-actions button{font-size:12px}.result-section .sample-block{margin-top:5px}.result-section .sample-block>h3{display:none}.result-section .table-scroll{margin:12px 0}.result-disclosure>summary:focus-visible,.result-section>summary:focus-visible{border-radius:4px}@media(max-width:700px){.result-disclosure>summary strong{font-size:13px}.result-actions button{font-size:11px}}@media(prefers-reduced-motion:reduce){.result-disclosure>summary:before,.result-section>summary:before{transition:none}}

.board-baseline{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;border-left:3px solid var(--blue);padding:10px 14px;background:#f5f8ff;margin:14px 0 20px}.board-baseline strong{font-size:15px}.leaderboard-table{min-width:950px}.leaderboard-table .board-points{font-size:21px;font-weight:650;color:var(--ink)}.leaderboard-table td{vertical-align:top}.teacher-row{background:#f7f9ff}.leaderboard-table td:nth-child(2){min-width:230px}.leaderboard-table td:nth-child(2)>strong{display:block}.leaderboard-table details{font-size:11px}.leaderboard-table details p{max-width:320px;white-space:normal}.leaderboard-table td:last-child{white-space:nowrap}#board-example .result-actions{align-items:center;gap:16px}#board-status{overflow-wrap:anywhere}

/* Visible progress per evaluation, including completed and failed tasks. */
.record-table .pg01-progress-cell{min-width:156px;vertical-align:middle}.record-table .pg01-progress-cell progress{display:block;width:140px;max-width:100%;height:10px;accent-color:#315de7;margin:0 0 5px}.record-table .pg01-progress-cell small{display:block;white-space:nowrap;color:#607692}
