/* "Heat on a plate" tab. Uses the site's variables (light/dark); numbers keep a monospaced font. */
.heat{--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--ok:#2a8a55}
:root[data-theme="dark"] .heat{--ok:#5fd08e}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .heat{--ok:#5fd08e}}
.heat h2.h-title{font-size:clamp(1.8rem,4vw,2.6rem);border-top:0;padding-top:0;margin:.3rem 0 .6rem}
.heat .h-intro{margin:2rem 0 1.6rem}.h-lead{max-width:68ch;font-size:1rem}
.heat section,.heat aside{margin:0}
.heat h3{margin:0;font-size:1.2rem}
.heat p{margin:.8rem 0}
.h-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.h-head{display:flex;justify-content:space-between;align-items:center;gap:.6rem;padding:1.2rem 1.4rem 0}
.h-head .eyebrow{margin-bottom:.2rem;font-size:.7rem}
.h-work{display:grid;grid-template-columns:minmax(0,1fr) 20rem;gap:1.3rem;align-items:start}
.h-status{font-size:.75rem;background:var(--chip);color:var(--muted);padding:.2rem .7rem;border-radius:999px;white-space:nowrap}
.h-status.running{background:var(--accent2);color:#fff}.h-status.done{background:var(--ok);color:#fff}
.h-platewrap{position:relative;margin:2.7rem 4rem 2.2rem}
.h-platewrap canvas{width:100%;aspect-ratio:1.5;display:block;cursor:crosshair;background:#152e4c;border-radius:3px;box-shadow:0 2px 8px #0003}
.h-platewrap canvas:focus-visible,.heat button:focus-visible,.heat summary:focus-visible,.heat input:focus-visible,.heat select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.h-side{position:absolute;font:.72rem var(--mono);white-space:nowrap;color:var(--muted)}
.h-side.top{bottom:calc(100% + .6rem);left:50%;transform:translateX(-50%)}
.h-side.bottom{top:calc(100% + .6rem);left:50%;transform:translateX(-50%)}
.h-side.left{right:calc(100% + .7rem);top:50%;transform:translateY(-50%) rotate(-90deg);transform-origin:center;width:2.2rem;text-align:center}
.h-side.right{left:calc(100% + .7rem);top:50%;transform:translateY(-50%) rotate(90deg);width:2.2rem;text-align:center}
.h-mapfoot{display:flex;align-items:center;justify-content:space-between;gap:.8rem;margin:0 1.4rem;color:var(--muted);font-size:.8rem}
.h-check{display:flex;align-items:center;gap:.4rem;white-space:nowrap}
.h-legend{display:flex;gap:.8rem;align-items:center;margin:1rem 1.4rem 1.2rem;font:.74rem var(--mono);color:var(--muted)}
.h-gradient{height:8px;border-radius:3px;flex:1;background:linear-gradient(90deg,#162b53,#24699b,#34aeb2,#dfd78d,#f19148,#c2383c)}
.heat button,.heat select,.heat input{font:inherit}
.heat button{cursor:pointer;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);padding:.55rem 1rem;font-size:.9rem;font-weight:600}
.heat button:hover:not(:disabled){border-color:var(--accent)}
.heat button:disabled{opacity:.45;cursor:default}
.h-controls{display:flex;gap:.55rem;padding:0 1.4rem}
.h-controls button{flex:1}.h-controls .h-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.h-controls .h-icon{flex:0 0 auto;font-size:1.3rem;padding:.2rem .9rem}
.h-primary span{margin-right:.4rem;font-size:.75rem}
.h-opts{display:flex;gap:1.4rem;align-items:center;margin:1rem 1.4rem 1.2rem;font-size:.8rem;color:var(--muted)}
.h-opts label{display:flex;gap:.6rem;align-items:center}
.h-opts select{width:auto;padding:.25rem .5rem;font-size:.8rem}
.h-speed{flex:1}.h-speed input{width:100%;min-width:3rem;padding:0;accent-color:var(--accent)}
.h-speed output{font:.78rem var(--mono);min-width:3.4rem;color:var(--fg)}
.heat input,.heat select{width:100%;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--fg);padding:.45rem .6rem;min-width:0}
.heat input[type=checkbox]{width:1rem;accent-color:var(--accent)}
.h-metrics{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg);padding:1.1rem 0}
.h-metrics>div{padding:0 1.2rem;border-right:1px solid var(--line);min-width:0}.h-metrics>div:last-child{border:0}
.h-metrics span{display:block;font-size:.62rem;letter-spacing:.07em;color:var(--muted);font-weight:650}
.h-metrics span.h-mm{font-size:.8rem;letter-spacing:0;color:var(--fg);font-weight:400;min-height:1.4rem;margin-top:.2rem}
.h-metrics strong{display:block;font:1.5rem var(--mono);letter-spacing:-.03em;margin-top:.3rem;overflow-wrap:anywhere}
.h-caption{display:flex;justify-content:space-between;gap:.8rem;flex-wrap:wrap;font-size:.74rem;color:var(--muted);padding:.8rem 1.4rem}
.h-settings form{padding:1.1rem 1.3rem 1.3rem}
.h-field{display:block;font-size:.78rem;color:var(--muted);font-weight:550;margin-bottom:.8rem}
.h-field input,.h-field select{display:block;margin-top:.3rem;font-weight:400;font-size:.88rem}
.h-field select{font-size:.8rem}
.h-section{display:flex;justify-content:space-between;font-size:.66rem;letter-spacing:.1em;font-weight:700;margin:1.3rem 0 .8rem;color:var(--muted)}
.h-two{display:grid;grid-template-columns:1fr 1fr;gap:0 .8rem}
.h-help{font-size:.74rem;line-height:1.55;color:var(--muted);margin:.5rem 0 0!important}
.h-apply{width:100%;display:flex;justify-content:space-between;margin-top:.7rem;background:var(--chip)!important;color:var(--accent)!important}
#h-boundary-formula{min-height:2.7rem;overflow-x:auto}
.h-under{display:grid;grid-template-columns:1.2fr 1fr;gap:1.3rem;margin-top:1.3rem}
.h-under .h-card>p{margin:1rem 1.4rem;color:var(--muted);font-size:.85rem}
.h-tag{font:.72rem var(--mono);background:var(--chip);padding:.25rem .5rem;border-radius:5px;white-space:nowrap}
.h-eq{background:var(--bg);margin:1rem 1.4rem;border:1px solid var(--line);border-radius:8px;padding:.6rem .6rem;overflow-x:auto;min-height:6rem;font-size:clamp(.72rem,1.4vw,1rem)}
.h-eq mjx-container[display=true]{margin:.6em 0!important}
.h-stencil{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,auto);gap:.45rem;margin:1.1rem auto 0;max-width:28rem;padding:0 1.2rem}
.h-nb{text-align:center;border:1px solid var(--line);padding:.5rem .1rem;border-radius:7px;background:var(--bg);min-width:0}
.h-nb span{display:block;font-size:.5rem;letter-spacing:.05em;color:var(--muted)}
.h-nb strong{font:1rem var(--mono);display:block;margin-top:.2rem}
.h-nb.north{grid-area:1/2;color:var(--accent2)}.h-nb.west{grid-area:2/1;color:var(--accent2)}.h-nb.east{grid-area:2/3}.h-nb.south{grid-area:3/2}
.h-nb.center{grid-area:2/2;background:var(--accent);border-color:var(--accent);color:#fff}.h-nb.center span{color:#ffe3ee}
.h-under .h-card>.h-numeq{font:.74rem/1.7 var(--mono);text-align:center;color:var(--fg);padding:.7rem .4rem;background:var(--bg);border-radius:7px;overflow-wrap:anywhere}
.h-small{font-size:.72rem!important;line-height:1.6}
.h-chartkey{display:flex;gap:1.1rem;margin:.8rem 1.4rem 0;font-size:.74rem;color:var(--muted)}
.h-chartkey span:before{content:'';display:inline-block;width:1rem;height:2px;margin:0 .4rem .25rem 0;background:var(--accent)}
.h-chartkey .r:before{background:var(--accent2)}
.h-chartwrap{position:relative;margin:.6rem 1.4rem 0}.h-chartwrap canvas{width:100%;height:235px;display:block}
#h-chart-ticks{position:absolute;left:0;top:0;width:2.6rem;height:100%;pointer-events:none}
#h-chart-ticks>span{position:absolute;right:0;transform:translateY(-50%);font-size:.7rem;color:var(--muted);line-height:1}
#h-chart-ticks mjx-container{margin:0!important}
.h-chartcap{display:flex;justify-content:space-between;margin:0 1.4rem;font-size:.7rem;color:var(--muted)}
.h-crit{display:flex;gap:.7rem;border-top:1px solid var(--line);margin:1.3rem 1.4rem 0;padding-top:1rem}
.dot{width:7px;height:7px;flex-shrink:0;background:var(--accent);border-radius:50%;margin-top:.5rem}
.h-crit strong{font-size:.85rem}.h-crit p{font-size:.78rem!important;line-height:1.65;color:var(--muted);margin:.3rem 0 0!important}
.h-explain{margin:2.2rem 0 0;border-top:1px solid var(--line);padding-top:1.6rem;display:grid;grid-template-columns:1fr 1.5fr;gap:2.4rem}
.heat h3.h-big{font-size:1.6rem;font-weight:500;line-height:1.3;margin-top:.3rem}
.h-explain details{border-bottom:1px solid var(--line);padding:0 0 .7rem;margin-bottom:.8rem}
.h-explain summary{font-size:.95rem;font-weight:600;cursor:pointer}
.h-explain details p{font-size:.88rem;color:var(--muted);line-height:1.75}
.h-source{font-size:.88rem}
.h-copy{margin:2rem 0 0!important;padding-top:1rem;border-top:1px solid var(--line);font-size:.82rem}
.heat mjx-container{max-width:100%}
@media (max-width:900px){.h-work{grid-template-columns:1fr}.h-settings form{display:grid;grid-template-columns:1fr 1fr;gap:0 1.2rem}.h-settings form>.h-field:first-child,.h-settings form>.h-section,.h-settings form>.h-help,.h-settings form>.h-apply,.h-settings form>#h-settings-note,.h-settings form>.h-two{grid-column:1/-1}.h-under{grid-template-columns:1fr}.h-explain{grid-template-columns:1fr;gap:1rem}}
@media (max-width:600px){.h-platewrap{margin:2.4rem 2.6rem 2rem}.h-side{font-size:.6rem}.h-metrics>div{padding:0 .6rem}.h-metrics strong{font-size:1.15rem}.h-metrics span{font-size:.52rem}.h-opts{flex-wrap:wrap;gap:.7rem}.h-controls button{font-size:.78rem;padding:.5rem .4rem}.h-head{padding:1rem 1rem 0}.h-mapfoot,.h-legend,.h-controls,.h-opts,.h-caption{margin-left:1rem;margin-right:1rem}.h-controls{padding:0}.h-caption{padding-left:0;padding-right:0}.h-settings form{display:block}}

.h-theory{margin:1.1rem 1.4rem 1.3rem;padding:.9rem 1rem .6rem;border:1px dashed var(--line);border-radius:10px;background:var(--bg)}
.h-theory dl{margin:.5rem 0 0;display:grid;gap:.15rem}
.h-theory dl>div{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;border-bottom:1px solid var(--line);padding:.35rem 0}
.h-theory dt{font-size:.82rem;color:var(--muted)}
.h-theory dd{margin:0;font-family:var(--mono);font-size:.9rem;text-align:right;white-space:nowrap}
.h-exintro{color:var(--muted);font-size:.88rem;margin:.6rem 0 0}
.h-grp{margin:1.6rem 0 .6rem;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:700}
.h-grp:first-child{margin-top:0}
.h-ans{font-size:.88rem;color:var(--muted);line-height:1.75;padding-top:.3rem}
.h-ans p,.h-ans ol,.h-ans ul{margin:.6rem 0}
.h-ans ol,.h-ans ul{padding-left:1.3rem}
.h-ans li{margin:.45rem 0}
.h-ans strong{color:var(--fg)}
.h-ans .h-eq{overflow-x:auto;margin:.8rem 0;font-size:.92rem;min-height:0}
.h-ans mjx-container{color:var(--fg)}