/* Laboratory: a gallery of experiments, then one experiment beside the chamber. */
.portal[data-mode=lab]{--lab-surface:#f5f5f7;--lab-hover:#eeeef2;--line:#e1e1e6;--panel-muted:#6e6e73}
.portal[data-mode=lab] :is(button,a,input,select,summary):focus-visible{outline:2px solid #242522;outline-offset:3px}
.portal[data-mode=lab] .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}

/* Heading: title and category switch on one line, as in results. */
.portal[data-mode=lab][data-overview=false] .portal-heading{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px 28px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.portal[data-mode=lab][data-overview=false] .portal-intro{padding:0;border:0;min-width:0}
.portal[data-mode=lab][data-overview=false] .portal-intro h2{font-size:clamp(32px,3.4vw,44px)}
.portal[data-mode=lab][data-overview=false] .portal-intro p:last-child{margin-top:6px;max-width:none;font-size:13px;line-height:1.5}
.portal[data-mode=lab][data-overview=false] .portal-tabs{position:static;min-height:44px;margin:0;padding:0;border:0;gap:16px;background:none;min-width:0}
.portal[data-mode=lab][data-overview=false] .portal-tabs .portal-field{width:180px;flex:0 0 180px;margin:0}
.portal[data-mode=lab][data-overview=false] .portal-tabs .portal-field>span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.portal[data-mode=lab][data-overview=false] .portal-tabs .portal-field select{min-height:44px}
.portal[data-mode=lab] .back-categories{display:none}
.portal[data-mode=lab] :is(.portal-field select,.portal-field input){background:var(--lab-surface);border:1px solid var(--line);border-radius:12px}
.portal[data-mode=lab][data-overview=false] .portal-layout{grid-template-areas:"controls controls" "visual panel";padding-top:20px}
.portal[data-mode=lab][data-overview=false][data-wide=true] .portal-layout{max-width:none;padding-top:24px}
.portal[data-mode=lab] .portal-controls{margin-bottom:22px}

/* Shared chamber and data surfaces. */
.portal[data-mode=lab] .portal-visual{background:var(--lab-surface);border:1px solid var(--line);border-radius:28px;overflow:hidden}
.portal[data-mode=lab] .model-metric{left:28px;top:24px}
.portal[data-mode=lab] .model-controls{left:auto;right:18px;bottom:18px;transform:none;padding:2px;border-radius:12px;background:#ffffffdf;border-color:var(--line)}
.portal[data-mode=lab] .model-controls button{display:none}
.portal[data-mode=lab] .model-controls .results-view-toggle{display:grid!important;width:44px;min-height:36px;border-radius:10px;font:inherit;font-size:12px}
.portal[data-mode=lab] .model-caption{padding-inline:64px}
.portal[data-mode=lab] .result-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:12px;margin:0 0 14px}
.portal[data-mode=lab] .result-metrics>div{background:var(--lab-surface);border-radius:18px;padding:18px;min-width:0}
.portal[data-mode=lab] .result-metrics strong{font-size:clamp(18px,2.4vw,24px);overflow-wrap:anywhere}
.portal[data-mode=lab] .table-scroll{background:var(--lab-surface);border-radius:20px;padding:8px 16px;margin-bottom:20px}
.portal[data-mode=lab] .results-table{margin-bottom:0}
.portal[data-mode=lab] .results-table tbody tr:last-child :is(td,th){border-bottom:0}
.portal[data-mode=lab] .insight-subtitle{margin:4px 0 10px;font-size:15px}

/* Gallery of experiments. */
.lab-grid{list-style:none;margin:0 0 24px;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.portal .lab-card{position:relative;display:flex;flex-direction:column;gap:14px;width:100%;height:100%;min-height:300px;padding:22px 22px 20px;background:var(--lab-surface);border:1px solid transparent;border-radius:24px;font:inherit;color:inherit;text-align:left;cursor:pointer;transition:background-color 180ms,border-color 180ms,transform 220ms var(--ease)}
.lab-card-kicker{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--panel-muted)}
.lab-card-number{display:grid;place-items:center;min-width:30px;height:24px;padding:0 6px;border-radius:8px;background:#fff;color:var(--ink);font-size:11px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.04em}
.lab-card-question{font-size:clamp(21px,1.9vw,25px);font-weight:400;line-height:1.18;letter-spacing:-.035em;text-wrap:balance}
.lab-card-strips{display:grid;gap:6px;margin-top:auto}
.lab-strip-row{display:grid;grid-template-columns:34px 1fr;align-items:center;gap:8px}
.lab-strip-row small{font-size:10px;color:var(--panel-muted);font-variant-numeric:tabular-nums}
.lab-strip{position:relative;display:flex;height:10px;border-radius:5px;overflow:hidden;background:#e3e3e8}
.lab-strip i{display:block;min-width:0;height:100%}
.lab-strip::after{content:"";position:absolute;left:calc(176 / 350 * 100%);top:0;bottom:0;width:2px;background:#fff;opacity:.85}
.lab-card-result{font-size:12px;line-height:1.5;color:var(--ink);font-variant-numeric:tabular-nums}
.lab-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--panel-muted)}
.lab-card-arrow{font-size:18px;line-height:1;color:var(--ink);transition:transform 220ms var(--ease)}
.lab-index>.portal-note{max-width:78ch;color:var(--panel-muted)}

/* One experiment: question, rule and controls above the chamber. */
.lab-head{display:grid;gap:8px}
.lab-trail{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.portal .lab-back{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px 0 10px;background:var(--lab-surface);border:0;border-radius:12px;font:inherit;font-size:13px;color:var(--ink);cursor:pointer}
.lab-pager{display:inline-flex;align-items:center;gap:4px;padding:3px;background:var(--lab-surface);border-radius:13px;font-size:12px;color:var(--panel-muted);font-variant-numeric:tabular-nums}
.lab-pager>span{padding:0 6px;white-space:nowrap}
.lab-pager button{width:40px;min-height:38px;border:0;border-radius:10px;background:none;font:inherit;font-size:20px;line-height:1;color:var(--ink);cursor:pointer}
.lab-kicker{margin:0;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--panel-muted)}
.lab-question{margin:0;font-size:clamp(28px,3.2vw,40px);font-weight:400;line-height:1.1;letter-spacing:-.045em;text-wrap:balance;max-width:24ch}
.lab-question:focus{outline:none}
.lab-rule{margin:4px 0 6px;max-width:72ch;font-size:15px;line-height:1.6;color:#4a4b47}
.lab-control{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;margin-top:6px}
.lab-control-label{font-size:12px;color:var(--panel-muted)}
.portal[data-mode=lab] .lab-options{margin:0;padding:3px;gap:3px;background:#eeeef0;border-radius:14px;flex-wrap:wrap}
.portal[data-mode=lab] .lab-options button{flex:0 0 auto;min-height:40px;padding:8px 14px;border-radius:10px;font-size:13px;color:var(--panel-muted)}
.portal[data-mode=lab] .lab-options button[aria-pressed=true]{background:#fff;box-shadow:0 1px 5px #0000000b;color:var(--ink)}
.lab-join .portal-field{flex:1 1 200px;max-width:260px;margin:0}
.lab-join .portal-field>span{font-size:12px}
.lab-presets{display:flex;flex-wrap:wrap;gap:6px}
.lab-presets button{min-height:36px;padding:6px 12px;border:1px solid var(--line);border-radius:18px;background:#fff;font:inherit;font-size:12px;color:var(--ink);cursor:pointer}
.lab-presets button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}

/* Results of the experiment. */
.lab-finding{margin:0 0 18px;font-size:15px;line-height:1.6}
.lab-extra{margin:0 0 18px}
.lab-chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.lab-chips li{padding:7px 11px;background:var(--lab-surface);border-radius:10px;font-size:13px}
.lab-chips strong{font-weight:600;font-variant-numeric:tabular-nums;margin-left:4px}
.portal .lab-party{display:inline-flex;align-items:center;gap:2px;min-height:32px;padding:0;border:0;background:none;font:inherit;font-weight:600;color:inherit;text-align:left;white-space:nowrap;cursor:pointer}
.lab-party[aria-pressed=true]{text-decoration:underline;text-underline-offset:4px}
.lab-sim>span{display:flex;align-items:center;justify-content:flex-end;gap:10px}
.lab-sim strong{min-width:3ch;text-align:right}
.portal[data-mode=lab] .lab-table :is(td,th){padding-block:10px}
.lab-real{color:var(--panel-muted)}
.lab-bar{position:relative;flex:1 1 auto;max-width:150px;height:8px}
.lab-bar i{position:absolute;left:0;top:0;height:100%;border-radius:4px}
.lab-bar .lab-bar-real{top:-2px;height:12px;border:1px solid #9a9aa2;border-radius:5px;background:none;box-sizing:border-box}
.lab-delta{font-weight:600}
.lab-delta[data-sign="1"]{color:#2f7a4f}
.lab-delta[data-sign="-1"]{color:#b2443f}
.lab-delta[data-sign="0"]{color:var(--panel-muted);font-weight:400}
.lab-table tr.is-highlighted{background:#ececf1}
.lab-how{margin:0 0 20px;padding:16px 18px;background:var(--lab-surface);border-radius:18px;font-size:14px;line-height:1.7}
.lab-how summary{cursor:pointer;font-weight:600;min-height:28px}
.lab-how p{margin:10px 0;color:#4a4b47}
.portal .lab-next{display:grid;grid-template-columns:1fr auto;gap:6px 16px;align-items:center;width:100%;padding:20px 22px;background:#242522;border:0;border-radius:22px;color:#fff;font:inherit;text-align:left;cursor:pointer}
.lab-next-label{grid-column:1;font-size:12px;opacity:.72}
.lab-next strong{grid-column:1;font-size:clamp(18px,1.8vw,22px);font-weight:400;letter-spacing:-.03em;line-height:1.25}
.lab-next .lab-card-arrow{grid-column:2;grid-row:1/3;color:#fff;font-size:22px}

@media(hover:hover){
 .lab-card:hover{background:var(--lab-hover);border-color:#d5d5db}
 .lab-card:hover .lab-card-arrow,.lab-next:hover .lab-card-arrow{transform:translateX(4px)}
 .lab-back:hover,.lab-pager button:hover{background:var(--lab-hover)}
 .portal[data-mode=lab] .lab-options button[aria-pressed=false]:hover{background:#e3e3e8;color:var(--ink)}
 .lab-presets button[aria-pressed=false]:hover{border-color:#9a9aa2}
 .portal[data-mode=lab] .lab-table tbody tr:hover{background:var(--lab-hover)}
 .lab-next:hover{background:#3a3b37}
}
.lab-card:active,.lab-next:active{transform:scale(.99)}
@media(prefers-reduced-motion:reduce){.portal .lab-card,.lab-card-arrow{transition:none}}
@media(prefers-contrast:more){.portal[data-mode=lab]{--line:#777}.portal .lab-card{border-color:var(--line)}}

@media(max-width:1000px){.lab-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){
 .portal[data-mode=lab][data-overview=false]{padding-top:12px}
 .portal[data-mode=lab][data-overview=false] .portal-heading{gap:8px;padding-bottom:14px}
 .portal[data-mode=lab][data-overview=false] .portal-intro{display:contents}
 .portal[data-mode=lab][data-overview=false] .portal-intro h2{grid-row:1;grid-column:1;min-width:0;font-size:clamp(27px,7.2vw,32px);white-space:nowrap}
 .portal[data-mode=lab][data-overview=false] .portal-intro p:last-child{grid-row:2;grid-column:1/-1;margin:0}
 .portal[data-mode=lab][data-overview=false] .portal-tabs{grid-row:1;grid-column:2;justify-content:flex-end;gap:4px}
 .portal[data-mode=lab][data-overview=false] .portal-tabs .portal-field{width:clamp(104px,calc(100vw - 216px),120px);flex:0 0 auto}
 .portal[data-mode=lab][data-overview=false] .portal-tabs .portal-field select{padding-left:8px;padding-right:22px}
 .portal[data-mode=lab][data-overview=false] .portal-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"controls" "visual" "panel";padding-top:16px}
 .portal[data-mode=lab] .portal-visual{border-radius:22px;height:340px;min-height:340px;width:100%;margin-inline:0}
 .portal[data-mode=lab] .model-metric{left:22px;top:20px}
 .portal[data-mode=lab] .portal-panel{padding-top:18px}
 .portal[data-mode=lab] .result-metrics{gap:10px}
 .portal[data-mode=lab] .result-metrics>div{padding:14px 12px;border-radius:16px}
 .portal[data-mode=lab] .table-scroll{padding:6px 10px;border-radius:16px}
 .lab-grid{grid-template-columns:1fr;gap:10px}
 .portal .lab-card{min-height:0;padding:18px;border-radius:20px}
 .lab-card-question{font-size:22px}
 .lab-question{font-size:clamp(26px,7.4vw,32px)}
 .lab-rule{font-size:14px}
 .lab-control{align-items:flex-start;flex-direction:column}
 .lab-join{flex-direction:row}
 .portal[data-mode=lab] .lab-options{width:100%;flex-wrap:nowrap}
 .portal[data-mode=lab] .lab-options button{flex:1 1 0;min-width:0;padding-inline:6px;white-space:normal;font-size:12px}
 .lab-bar{display:none}
 .portal .lab-next{padding:18px;border-radius:18px}
}