.heat-page{--heat-blue:#315f73;--heat-teal:#287f83;--heat-copper:#a66c39;--heat-line:#cfdee5}
.heat-context{border-top:1px solid var(--heat-line);padding:34px 0 38px;max-width:900px}.heat-context h2{font:30px/1.3 var(--serif);margin:14px 0 22px}.heat-context p:not(.kicker){max-width:850px}.heat-sentence{display:block;font:25px/1.5 var(--serif);color:var(--heat-blue);border-left:2px solid var(--heat-teal);padding:13px 20px;margin:16px 0}.heat-sentence strong{color:var(--heat-teal)}.heat-meaning{font:15px/1.8 var(--sans);max-width:870px;border-left:2px solid var(--heat-teal);padding-left:18px;margin:4px 0 24px;color:var(--heat-blue)}
.heat-hero{padding:48px 0 42px;max-width:900px}.heat-hero h1{font:clamp(39px,5vw,61px)/1.1 var(--serif);letter-spacing:-1.5px;margin:20px 0 25px;max-width:900px}.heat-hero h1 em{color:var(--heat-blue);font-weight:400}.heat-hero .lede{font-size:21px;max-width:780px}.heat-hero>p:not(.kicker):not(.heat-meta){max-width:800px}.heat-meta{font:12px/1.7 var(--sans);color:var(--muted);margin-top:24px}.heat-meta strong{color:var(--heat-teal);margin-right:16px}.heat-hero .links{margin-top:22px}
.heat-page button{font:13px/1.4 var(--sans);border:1px solid #aec6cf;background:white;color:var(--heat-blue);padding:10px 13px;cursor:pointer}.heat-page button:hover,.heat-page button[aria-pressed=true]{background:#eaf3f3;border-color:var(--heat-teal)}.heat-page button:focus-visible{outline:2px solid var(--heat-teal);outline-offset:3px}
.heat-lab{border:1px solid var(--heat-line);background:#fbfdfe}.heat-lab-head{padding:25px 28px 22px;border-bottom:1px solid var(--heat-line)}.heat-lab-head h2{font:32px/1.25 var(--serif);margin:10px 0 16px}.heat-lab-head>p:last-child{max-width:850px;font:16px/1.7 var(--sans)}
.heat-controls{padding:22px 28px;display:grid;grid-template-columns:auto 1fr;gap:16px 35px;border-bottom:1px solid var(--heat-line)}.heat-play{display:flex;align-items:center;gap:8px}#heat-play{background:var(--heat-blue);color:white;min-width:130px}.heat-controls label{font:13px/1.5 var(--sans);color:var(--heat-blue)}#heat-time{font:18px var(--mono);float:right}#heat-scrub{display:block;width:100%;accent-color:var(--heat-teal);margin:10px 0 0;cursor:pointer}.heat-time-presets{display:flex;gap:8px;flex-wrap:wrap;grid-column:1/-1}.heat-time-presets button{font-size:12px;padding:7px 11px}.heat-controls>p{font:12px/1.6 var(--sans);color:var(--muted);grid-column:1/-1;margin:0}
.heat-networks{display:grid;grid-template-columns:1fr 1fr}.heat-networks>article+article{border-left:1px solid var(--heat-line)}.heat-networks article header{padding:24px 24px 12px;display:grid;grid-template-columns:30px 1fr;column-gap:10px;align-items:center}.heat-networks h3{font:24px var(--serif);margin:0}.heat-networks header>span:last-child{font:11px/1.6 var(--mono);grid-column:2;color:var(--muted);margin-top:6px}.heat-badge{font:13px var(--mono);color:var(--heat-blue);border:1px solid var(--heat-line);width:28px;height:28px;text-align:center;padding-top:5px}.heat-map{background-image:linear-gradient(#eaf1f4 1px,transparent 1px),linear-gradient(90deg,#eaf1f4 1px,transparent 1px);background-size:24px 24px;padding:4px}.heat-map svg{display:block;width:100%;height:auto;font-family:var(--sans)}.heat-map .cluster-label{font:10px var(--mono);letter-spacing:2px;fill:#66808c}.heat-map [data-source]{cursor:pointer}.heat-map [data-source]:focus{outline:none}.heat-map [data-source]:focus .heat-node{stroke:#1a424d;stroke-width:4}
.heat-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:22px 24px;margin:0;border-top:1px solid var(--heat-line)}.heat-stats>div:last-child{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--heat-line);padding-top:13px}.heat-stats dt{font:11px/1.5 var(--sans);color:var(--muted)}.heat-stats dd{font:30px/1.3 var(--serif);color:var(--heat-blue);margin:5px 0 0}.heat-stats>div:last-child dd{font:15px var(--mono);margin:0}
.heat-bottom{border-top:1px solid var(--heat-line);padding:24px 28px}.heat-bottom>p:first-child{font:19px/1.5 var(--serif);color:var(--heat-blue);min-height:58px}.heat-legend{font:11px var(--sans);display:grid;grid-template-columns:repeat(4,50px);gap:5px;margin:12px 0 22px}.heat-legend>span:first-child{grid-column:1/-1}.heat-legend i{grid-column:1/-1;height:10px;background:linear-gradient(90deg,#edf4f6,#589ea2 33%,#d0984c 66%,#c44c2b)}.heat-legend span:nth-last-child(1){text-align:right}.heat-secondary{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:20px 0;border-top:1px solid var(--heat-line)}.heat-secondary>div{display:flex;gap:8px;flex-wrap:wrap}.heat-secondary span{display:block;width:100%;font:12px var(--sans);margin-bottom:6px}.heat-secondary button{font-size:12px;padding:8px 10px}.heat-caption{font:12px/1.7 var(--sans)!important;color:var(--muted);margin-top:14px!important}
.heat-page .section{padding:42px 0}.heat-page .section>h2{font:33px/1.25 var(--serif);margin:10px 0 22px}.heat-page .section>h3{margin:28px 0 15px}.heat-page .section>p{max-width:850px}.heat-views{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin:25px 0}.heat-views h3{font:23px var(--serif);margin-bottom:14px}.heat-views p{font:15px/1.7 var(--sans)}.heat-views svg{width:100%;font:12px var(--sans);fill:#466876;display:block}.heat-mini-label{font:11px var(--mono)!important;color:var(--heat-copper);margin:18px 0 5px}.heat-trace-key{display:flex;gap:18px;font:11px var(--sans);margin:20px 0}.heat-trace-key span:first-child{color:var(--heat-copper)}.heat-trace-key span:last-child{color:var(--heat-teal)}
.heat-method{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:28px 0}.heat-method article{border-top:1px solid var(--heat-line);padding-top:20px}.heat-method article>span{font:12px var(--mono);color:var(--heat-copper)}.heat-method h3{font:22px var(--serif);margin:12px 0}.heat-method p{font:15px/1.75 var(--sans)}.heat-equation{font:clamp(17px,2.4vw,26px)/1.8 var(--serif);color:var(--heat-blue);border-left:3px solid var(--heat-teal);background:#f4f8f9;padding:22px 26px;margin:28px 0;overflow-wrap:anywhere}.heat-page details{margin:25px 0;padding:18px 22px;border:1px solid var(--heat-line);font:14px/1.8 var(--sans)}.heat-page summary{cursor:pointer;color:var(--heat-blue)}.heat-page details>p{margin-top:18px}.heat-use{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin:30px 0}.heat-use h3{font:25px var(--serif);margin:12px 0 18px}.heat-use aside{background:#f5f8f9;padding:25px;border-top:2px solid var(--heat-teal)}.heat-use aside p:not(.kicker){font:13px/1.7 var(--sans)}.heat-use aside a{font:13px var(--sans)}.heat-use table{margin-bottom:18px;font-size:14px}.heat-source-figure{margin:25px 0 38px;border:1px solid var(--heat-line);padding:22px;background:#fcfdfe}.heat-source-figure svg{width:100%;height:auto;display:block}.heat-source-figure figcaption{font:12px/1.7 var(--sans);color:var(--muted);margin-top:15px}.heat-reading>.links{margin-top:25px}.heat-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
@media(max-width:720px){.heat-hero{padding-top:30px}.heat-hero h1{font-size:42px}.heat-hero .lede{font-size:19px}.heat-lab-head,.heat-bottom{padding:20px}.heat-controls{display:block;padding:20px}.heat-controls label{display:block;margin-top:22px}.heat-time-presets{margin:18px 0}.heat-networks,.heat-views,.heat-method,.heat-use,.heat-secondary{grid-template-columns:1fr}.heat-networks>article+article{border-left:0;border-top:1px solid var(--heat-line)}.heat-networks article header{padding:20px 18px 12px}.heat-stats{padding:18px}.heat-views{gap:35px}.heat-source-figure{padding:9px;overflow:auto}.heat-source-figure svg{min-width:620px}.heat-source-figure figcaption{min-width:0}.heat-use{gap:24px}.heat-page .section>h2{font-size:29px}.heat-equation{padding:18px}.heat-page details{padding:15px}.heat-bottom>p:first-child{min-height:0}}
@media(prefers-reduced-motion:reduce){.heat-page *{scroll-behavior:auto}}
@media print{.heat-controls,.heat-secondary{display:none}.heat-map{break-inside:avoid}.heat-networks{grid-template-columns:1fr 1fr}.heat-source-figure svg{min-width:0}}