.lab{--lab-bg:#f2f6fa;--lab-panel:#fff;--lab-text:#173447;--lab-muted:#516b7d;--lab-line:#d9e4eb;--lab-accent:#086e79;--lab-soft:#e8f5f4;--lab-ink:#153c50;color:var(--lab-text)}
.lab-heading{display:flex;justify-content:space-between;gap:22px;align-items:flex-end;flex-wrap:wrap;margin:14px 0 24px}.lab-eyebrow{display:block;font:11px ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.09em;text-transform:uppercase;color:var(--lab-muted);margin:0 0 10px}.lab-heading h2{font-size:clamp(26px,3vw,38px);line-height:1.15;letter-spacing:-1px;margin:0;font-weight:600}.lab-subtitle{margin:10px 0 0;color:var(--lab-muted);font-size:14px}.lab-heading label{display:grid;gap:7px;color:var(--lab-muted);font-size:12px}.lab-heading select{max-width:100%;padding:12px;border:1px solid #a6bbc9;border-radius:8px;background:white;color:var(--lab-text);font:16px inherit;min-width:280px}
.lab-tabs{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:20px}.lab-tabs button{padding:11px 15px;border:1px solid #bbccd7;background:white;border-radius:8px;color:var(--lab-text);cursor:pointer;font:inherit;font-size:13px}.lab-tabs button[aria-current]{background:var(--lab-ink);color:white;border-color:var(--lab-ink)}
.lab-workspace{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(360px,1fr);align-items:start;gap:20px}.lab-network-panel,.lab-brief{min-width:0;border:1px solid var(--lab-line);background:var(--lab-panel);border-radius:12px;overflow:hidden}.lab-subtopics{padding:18px;border-bottom:1px solid var(--lab-line)}.lab-chips{display:flex;gap:7px;flex-wrap:wrap}.lab-chips button{font:inherit;font-size:13px;padding:9px 11px;border:1px solid var(--lab-line);background:var(--lab-bg);border-radius:7px;cursor:pointer;min-height:40px}.lab-chips button[aria-pressed=true]{background:var(--lab-ink);color:white;border-color:var(--lab-ink)}
.lab-network{position:relative;height:430px;background-image:linear-gradient(#e4ebf1 .5px,transparent .5px),linear-gradient(90deg,#e4ebf1 .5px,transparent .5px);background-size:30px 30px}.lab-coordinate{position:absolute;top:12px;left:14px;font:10px ui-monospace,monospace;color:var(--lab-muted);letter-spacing:.06em}.lab-network svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.lab-edge{stroke:#b8ccd7;stroke-width:1.5;fill:none;vector-effect:non-scaling-stroke;transition:stroke .2s}.lab-edge.selected{stroke:var(--lab-accent)}
.lab-country{position:absolute;transform:translate(-50%,-50%);display:flex;align-items:center;justify-content:center;flex-direction:column;width:88px;height:88px;border:1px solid #a4becb;border-radius:50%;background:white;color:var(--lab-text);box-shadow:0 0 0 6px white;cursor:pointer}.lab-country strong{font:500 24px ui-monospace,monospace;letter-spacing:1px}.lab-country small{font-size:11px;margin-top:5px}.lab-canada{left:50%;top:16%;background:var(--lab-ink);color:white;border-color:var(--lab-ink)}.lab-us{left:18%;top:80%}.lab-china{left:82%;top:80%}.lab-country[aria-pressed=true]{outline:2px solid var(--lab-accent);outline-offset:6px}
.lab-focus{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);display:grid;gap:5px;text-align:center;width:116px;padding:13px 6px;border:1px solid var(--lab-line);border-radius:8px;background:white;font-size:12px}.lab-focus span{font:10px ui-monospace,monospace;color:var(--lab-muted)}.lab-link{position:absolute;transform:translate(-50%,-50%);width:145px;padding:10px 9px;border:1px solid #b8cbd6;border-radius:22px;background:white;color:var(--lab-text);cursor:pointer;min-height:60px}.lab-link strong{font-size:12px;font-weight:600;display:block}.lab-link small{font-size:11px;color:var(--lab-muted);display:block;margin-top:4px;line-height:1.35}.lab-link[aria-pressed=true]{border-color:var(--lab-accent);background:var(--lab-soft);box-shadow:0 0 0 4px var(--lab-soft)}.lab-link-0{left:24%;top:46%}.lab-link-1{left:76%;top:46%}.lab-link-2{left:50%;top:80%;width:152px}
.lab-legend{border-top:1px solid var(--lab-line);padding:12px 16px;color:var(--lab-muted);font-size:11px;line-height:1.5}.lab-selected-mark{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--lab-accent);margin-right:4px}.lab-country-context{padding:12px 16px;background:var(--lab-soft);font-size:13px;line-height:1.5}.lab-provenance{padding:18px;border-top:1px solid var(--lab-line)}.lab-trace{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:7px}.lab-trace button{display:flex;align-items:center;flex-direction:column;gap:4px;padding:10px 3px;border:1px solid var(--lab-line);border-radius:7px;background:white;color:var(--lab-text);font:inherit;font-size:13px;cursor:pointer}.lab-trace button span{font-size:23px;color:var(--lab-accent);line-height:1}.lab-trace button[aria-pressed=true]{border-color:var(--lab-accent);background:var(--lab-soft)}#lab-trace-detail p{font-size:13px;color:var(--lab-muted);line-height:1.6;margin:12px 0}.lab-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.lab-actions a{font-size:12px}.lab-text-button{font:inherit;font-size:12px;text-decoration:underline;text-underline-offset:3px;border:0;background:transparent;color:#005b86;padding:7px 0;cursor:pointer}
.lab-brief{padding:24px;border-top:3px solid var(--lab-accent)}.lab-brief h3{font-size:23px;letter-spacing:-.4px;margin:0 0 8px;font-weight:600}.lab-topic-caption{display:inline-block;margin:0 0 10px;padding:5px 8px;background:var(--lab-soft);color:var(--lab-accent);font-size:12px;border-radius:5px}.lab-small{font-size:12px;color:var(--lab-muted);line-height:1.6}.lab-question{padding:18px 0;border-top:1px solid var(--lab-line);scroll-margin-top:20px}.lab-question:last-child{padding-bottom:0}.lab-question h4{display:flex;align-items:baseline;gap:10px;margin:0;font-size:15px;line-height:1.5}.lab-question h4 span{font:12px ui-monospace,monospace;color:var(--lab-accent)}.lab-hint{font-size:11px!important;color:var(--lab-muted);margin:4px 0 10px!important}.lab-question p{font-size:14px;line-height:1.65;margin:10px 0 0}.lab-caution{border-left:3px solid #ad7624;padding-left:10px;color:#75510c}.lab-analysis{padding:10px 12px;background:#f2f7fa;border-radius:4px}.lab-finding{margin-top:12px;border:1px solid var(--lab-line);border-radius:7px}.lab-finding summary{cursor:pointer;padding:12px;font-size:13px;line-height:1.5}.lab-finding>div{padding:0 12px 12px}.lab-finding p{font-size:13px}.lab-footer{margin-top:20px;padding:14px 0;font-size:12px;color:var(--lab-muted);line-height:1.65}.lab dialog{width:min(760px,calc(100% - 24px));max-height:85vh;overflow:auto;border:1px solid var(--lab-line);border-radius:12px;padding:24px;color:var(--lab-text);background:white}.lab dialog::backdrop{background:#102d4577}.lab dialog dl{display:grid;grid-template-columns:160px minmax(0,1fr);gap:14px;font-size:14px;line-height:1.6}.lab dialog dt{font-weight:600}.lab dialog dd{margin:0;overflow-wrap:anywhere}.lab-close{border:1px solid #9eb5c4;background:white;color:var(--lab-text);padding:10px 13px;border-radius:7px;cursor:pointer;font:inherit;float:right}.lab dialog form{display:flow-root;margin-bottom:14px}.lab-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.lab button:focus-visible,.lab a:focus-visible,.lab select:focus-visible,.lab summary:focus-visible{outline:3px solid #006eab;outline-offset:4px}.lab [hidden]{display:none!important}
@media(max-width:1120px){.lab-workspace{grid-template-columns:1fr}.lab-network-panel{max-width:none}.lab-network{max-width:760px;margin:auto}.lab-brief{padding:22px}}
@media(max-width:600px){.lab.wrap{padding:16px}.lab-heading{gap:18px}.lab-heading label{width:100%}.lab-heading select{min-width:0;width:100%}.lab-heading h2{font-size:29px}.lab-tabs button{flex:1 1 140px}.lab-network{height:410px}.lab-coordinate{font-size:9px;letter-spacing:0}.lab-country{width:76px;height:76px}.lab-canada{top:13%}.lab-us{left:22%;top:86%}.lab-china{left:78%;top:86%}.lab-focus{display:none}.lab-link{width:112px;padding:9px 5px;min-height:66px}.lab-link-0{left:24%;top:42%}.lab-link-1{left:76%;top:42%}.lab-link-2{left:50%;top:65%;width:150px}.lab-brief{padding:18px}.lab-subtopics{padding:14px}.lab dialog{padding:18px}.lab dialog dl{grid-template-columns:1fr;gap:5px}.lab dialog dd{margin-bottom:10px}.lab-chips button{min-height:44px}.lab-trace{gap:5px}}
@media(prefers-reduced-motion:reduce){.lab-edge{transition:none}}
@media print{body>header,.lab-heading select,.lab-heading label,.lab-tabs,.lab-network-panel,dialog{display:none!important}.lab-workspace{display:block}.lab.wrap{max-width:none;padding:0}.lab-brief{border:0;padding:0}.lab-question,.lab-finding{break-inside:avoid}.lab-finding>div{display:block!important}.lab-finding{border-color:#bbb}.lab-actions button{display:none}.lab a{color:black;overflow-wrap:anywhere}.lab a[href]:after{content:" (" attr(href) ")";font-size:10px}.lab-footer{border-top:1px solid #aaa}}