/* System AI-X: shared public-site shell and responsive layout, September 2026. */
.sax-v2{--sax-max:1180px;--sax-space:clamp(20px,4vw,48px);--fg-faint:rgba(245,245,247,.68);--fg-dim:rgba(245,245,247,.75);line-height:1.65;overflow-x:clip}
html[data-theme="light"] .sax-v2{--fg-faint:rgba(29,29,31,.70);--fg-dim:rgba(29,29,31,.78)}
.sax-v2 :where(button,input,select,textarea,summary){font:inherit}
.sax-v2 :where(button,a,summary,input,select,textarea):focus-visible{outline:3px solid var(--accent-2);outline-offset:5px}
.sax-v2 [hidden]{display:none!important}
.sax-v2 :where(h1,h2,h3,p,li,dd){overflow-wrap:break-word}
.sax-v2 :where(main,section,article,div,figure){min-width:0}
.sax-v2 :where(img,svg,canvas){max-width:100%}
.sax-v2 :where(section,h2,h3,[id]){scroll-margin-top:100px}
.sax-v2 .bg-grid,.sax-v2 .bg-veil,.sax-v2 .dyn-island,.sax-v2 .ticker,.sax-v2 .brand-popover,.sax-v2 .progress{display:none!important}
.sax-v2 .reveal{opacity:1!important;transform:none!important;filter:none!important}
.sax-v2 .sax-skip{position:fixed;left:16px;top:-100px;z-index:1100;padding:12px 20px;background:var(--fg);color:var(--bg);border-radius:8px}
.sax-v2 .sax-skip:focus{top:12px}
.sax-header{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:32px;justify-content:space-between;min-height:80px;padding:12px max(24px,calc((100vw - 1180px)/2));background:var(--bg);border-bottom:1px solid var(--hairline);isolation:isolate}
.sax-brand{display:inline-flex;align-items:center;gap:12px;white-space:nowrap;font-size:16px;font-weight:670;letter-spacing:-.035em}
.sax-mark{display:grid;place-items:center;flex:none;width:32px;height:32px;border-radius:10px;background:var(--accent);color:white;font-size:17px;line-height:1;font-weight:700}
.sax-primary{display:flex;align-items:center;gap:28px;margin-left:auto;font-size:14px;line-height:1.4}
.sax-primary a{padding:12px 0;color:var(--fg-dim);border-bottom:2px solid transparent}
.sax-primary a:hover,.sax-primary a[aria-current]{color:var(--fg);border-color:var(--accent)}
.sax-actions{display:flex;align-items:center;gap:12px;flex:none}
.sax-theme,.sax-menu summary{min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--hairline-strong);border-radius:10px;background:var(--bg-elev);color:var(--fg);cursor:pointer;font-size:13px;line-height:1.2}
.sax-theme svg,.sax-menu summary svg{width:20px;height:20px;flex:none}
.sax-menu{position:relative}
.sax-menu summary{list-style:none;padding:0 13px}
.sax-menu summary::-webkit-details-marker{display:none}
.sax-menu summary:hover,.sax-theme:hover{background:var(--bg-soft);border-color:var(--accent)}
.sax-menu-panel{position:absolute;right:0;top:calc(100% + 16px);display:grid;grid-template-columns:1fr 1fr;gap:4px;width:min(420px,calc(100vw - 40px));max-height:calc(100dvh - 108px);overflow:auto;padding:16px;background:var(--bg-elev);border:1px solid var(--hairline-strong);border-radius:16px;box-shadow:0 20px 60px #0005}
.sax-menu-panel a{font-size:14px;border-radius:8px;padding:10px 12px;min-height:44px}
.sax-menu-panel a:hover,.sax-menu-panel a[aria-current]{background:var(--accent-soft);color:var(--fg)}
.sax-v2 main{outline:0}
.sax-home-hero,.sax-section,.sax-snapshot,.sax-page-intro,.sax-boundary,.sax-instrument-disclaimer{width:min(var(--sax-max),calc(100% - 2 * var(--sax-space)));margin-inline:auto}
.sax-home-hero{display:grid;grid-template-columns:1.12fr 1fr;gap:54px;align-items:center;padding-block:80px 76px}
.sax-hero-copy h1,.sax-page-intro h1{font-size:clamp(40px,5.2vw,72px);line-height:1.07;font-weight:650;letter-spacing:-.058em;max-width:820px;text-wrap:balance}
.sax-hero-copy h1 span,.sax-page-intro h1 span{color:var(--fg-dim)}
.sax-hero-copy>p:not(.sax-hero-footnote){margin-top:26px;font-size:18px;line-height:1.65;color:var(--fg-dim);max-width:520px}
.sax-hero-actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:32px}
.sax-button{display:inline-flex;align-items:center;justify-content:center;gap:20px;border:1px solid transparent;background:var(--accent);color:#fff;border-radius:10px;min-height:48px;padding:12px 20px;font-size:14px;font-weight:580;cursor:pointer;line-height:1.5;transition:background .18s,border-color .18s}
.sax-button:hover{background:color-mix(in srgb,var(--accent) 85%,white)}
.sax-button.secondary{background:transparent;border-color:var(--hairline-strong);color:var(--fg);font-weight:500}
.sax-button.secondary:hover{background:var(--bg-soft);border-color:var(--accent)}
.sax-button:disabled{opacity:.6;cursor:wait}
.sax-text-link{display:inline-flex;align-items:center;gap:12px;font-size:14px;min-height:44px;font-weight:550;text-decoration:underline;text-decoration-color:var(--hairline-strong);text-underline-offset:5px}
.sax-text-link:hover{text-decoration-color:var(--accent)}
.sax-hero-footnote{color:var(--fg-faint);font-size:12px;margin-top:30px}
.sax-hero-image{margin:0;align-self:center}
.sax-hero-image img{display:block;width:100%;height:auto;aspect-ratio:1.2;object-fit:cover;border-radius:20px;background:#070a12}
.sax-hero-image figcaption{font-size:11px;color:var(--fg-faint);margin-top:12px;line-height:1.5}
.sax-snapshot{border-block:1px solid var(--hairline-strong);padding-block:32px;margin-bottom:0}
.sax-section-heading{display:flex;gap:24px;align-items:center;justify-content:space-between;margin-bottom:24px}
.sax-v2 .sax-section-heading h2,.sax-about h2,.sax-boundary h2{font-size:clamp(24px,2.65vw,34px);letter-spacing:-.035em;line-height:1.2;font-weight:620;margin:0}
.sax-section-heading p{font-size:14px;line-height:1.6;margin-top:10px;color:var(--fg-dim)}
.sax-snapshot .sax-section-heading h2{font-size:22px}
.sax-snapshot-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:12px;color:var(--fg-dim);min-height:28px}
.sax-state{display:inline-flex;align-items:center;gap:7px;color:var(--fg);font-weight:600}
.sax-state:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--fg-dim)}
[data-snapshot-state="fresh"] .sax-state:before{background:#4ccc9b}
[data-snapshot-state="stale"] .sax-state:before,[data-snapshot-state="degraded"] .sax-state:before{background:#eba54f}
[data-snapshot-state="unavailable"] .sax-state:before{background:#ed7585}
.sax-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin:24px 0 12px}
.sax-metrics>div+div{border-left:1px solid var(--hairline);padding-left:24px}
.sax-metrics dt{font-size:12px;color:var(--fg-dim);margin:0 0 8px}
.sax-metrics dd{font-size:34px;font-weight:580;line-height:1.15;letter-spacing:-.04em;font-variant-numeric:tabular-nums;margin:0}
.sax-metrics dd.sax-metric-word{font-size:25px;line-height:1.5}
.sax-caption{font-size:12px;line-height:1.6;color:var(--fg-faint);margin-top:20px;max-width:900px}
.sax-section{padding-block:68px}
.sax-feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.sax-feature{display:flex;flex-direction:column;gap:0;border:1px solid var(--hairline);border-radius:14px;overflow:hidden;background:var(--bg-elev);transition:border-color .18s}
.sax-feature:hover{border-color:var(--accent)}
.sax-feature>img{width:100%;aspect-ratio:1.8;height:auto;object-fit:cover;display:block}
.sax-feature>div{padding:24px;display:flex;flex-direction:column;flex:1}
.sax-feature h3{font-size:23px;line-height:1.2;letter-spacing:-.035em;margin:0 0 12px}
.sax-feature p{font-size:14px;line-height:1.7;color:var(--fg-dim);margin:0 0 24px}
.sax-feature>div>span{font-size:13px;font-weight:550;margin-top:auto}
.sax-about{display:grid;grid-template-columns:.95fr 1.2fr;gap:80px;border-top:1px solid var(--hairline);padding-top:60px}
.sax-about>div>p{margin:20px 0;font-size:16px;color:var(--fg-dim)}
.sax-directory-row{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:24px 0;border-bottom:1px solid var(--hairline);transition:border-color .18s}
.sax-directory-row:first-child{border-top:1px solid var(--hairline)}
.sax-directory-row:hover{border-bottom-color:var(--accent)}
.sax-directory-row h3{font-size:18px;font-weight:600;line-height:1.3;letter-spacing:-.02em;margin:0 0 5px}
.sax-directory-row p{font-size:14px;color:var(--fg-dim);line-height:1.6;margin:0}
.sax-link-kind{font-size:12px;display:flex;align-items:center;gap:16px;white-space:nowrap;color:var(--fg-faint)}
.sax-link-kind svg{width:20px;height:20px}
.sax-page-intro{padding-block:70px 44px}
.sax-page-intro>p{font-size:18px;max-width:690px;margin-top:24px;color:var(--fg-dim)}
.sax-directory-section{padding-top:18px;padding-bottom:40px}
.sax-boundary{padding:30px;border:1px solid var(--hairline-strong);border-radius:14px;background:var(--bg-elev);margin-block:24px 70px}
.sax-boundary h2{font-size:22px}
.sax-boundary p{color:var(--fg-dim);font-size:15px;line-height:1.8;margin-top:14px}
.sax-boundary a,.sax-caption a,.sax-v2 noscript a{text-decoration:underline;text-underline-offset:4px}
.sax-footer{width:min(var(--sax-max),calc(100% - 2 * var(--sax-space)));margin:auto;display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:44px 0 28px;border-top:1px solid var(--hairline-strong);background:none;color:var(--fg)}
.sax-footer-brand{font-size:17px;font-weight:650;letter-spacing:-.03em}
.sax-footer p{font-size:13px;line-height:1.75;margin-top:14px;color:var(--fg-dim)}
.sax-footer nav{justify-self:end;display:grid;grid-template-columns:1fr 1fr;column-gap:36px;align-content:start}
.sax-footer nav a{display:flex;align-items:center;min-height:44px;font-size:13px}
.sax-footer nav a:hover{text-decoration:underline;text-underline-offset:4px}
.sax-footer .sax-copyright{grid-column:1/-1;font-size:11px;color:var(--fg-faint);margin:0}
.sax-v2 main>.hero{padding:56px var(--sax-space) 32px}
.sax-v2 .title{font-size:clamp(38px,5vw,66px);line-height:1.08;letter-spacing:-.05em;text-wrap:balance}
.sax-v2 .deck{font-size:18px;line-height:1.7;margin-top:24px;max-width:720px}
.sax-v2 .hero-wrap{max-width:860px}
.sax-v2 .eyebrow{font-size:11px;line-height:1.5;color:var(--fg-faint);margin-bottom:18px}
.sax-v2 .meta-row{flex-wrap:wrap;gap:10px;font-size:12px;line-height:1.6;margin-top:22px;color:var(--fg-faint)}
.sax-v2 .hero-art,.sax-v2 .topic-hero-art{max-width:860px;aspect-ratio:2.1;margin:32px auto 0;border-radius:16px}
.sax-v2 .topic-hero-art .topic-hero-img{height:100%;aspect-ratio:auto;object-fit:cover}
.sax-v2 .topic-hero-caption{padding:14px;border-radius:10px;left:16px;right:16px;bottom:16px}
.sax-v2 .topic-hero-caption strong{font-size:17px;line-height:1.3}
.sax-v2 .essay-visual{display:none} /* Avoid repeating the identical hero artwork above each essay. */
.sax-v2 article.essay{max-width:760px;width:calc(100% - 2 * var(--sax-space));margin:0 auto 60px;padding:0;font-size:17px;line-height:1.85}
.sax-v2 article.essay h2{font-size:28px;line-height:1.25;letter-spacing:-.035em;margin:44px 0 18px}
.sax-v2 article.essay h3{font-size:21px;line-height:1.4;margin:28px 0 14px}
.sax-v2 article.essay p{margin:16px 0}
.sax-v2 article.essay pre{max-width:100%;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.7;padding:20px}
.sax-v2 article.essay code{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.sax-v2 article.essay table{display:block;max-width:100%;overflow:auto;font-size:14px}
.sax-v2 article.essay li{margin-block:8px}
.sax-v2 .toc{margin:24px 0 32px;padding:20px}
.sax-v2 .toc a{text-decoration:underline;text-underline-offset:4px;line-height:1.8}
.sax-v2 .visual-crosslinks{margin-top:36px;gap:16px}
.sax-v2 .sax-error-code{font-family:var(--mono);font-size:14px;color:var(--fg-faint);margin-bottom:20px}
.sax-not-found{padding-bottom:110px;min-height:65vh}
.sax-jumps{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.sax-jumps a{min-height:44px;display:flex;align-items:center;padding:8px 16px;border:1px solid var(--hairline-strong);border-radius:8px;font-size:13px}
.sax-instrument-disclaimer{padding-block:24px;color:var(--fg-dim);font-size:13px;line-height:1.75}
.sax-instruments :is(.fp,.tm,.ss){width:min(var(--sax-max),calc(100% - 2 * var(--sax-space)));margin:0 auto 50px;padding:32px 0;max-width:var(--sax-max);border-top:1px solid var(--hairline)}
.sax-instruments .fp__wrap,.sax-instruments .tm__wrap,.sax-instruments .ss__wrap{padding-inline:0}
.sax-instruments .tm__veil{max-width:100%;left:0;right:0}
.sax-instruments :is(.fp,.tm,.ss) h2{font-size:clamp(26px,3vw,40px);line-height:1.15;letter-spacing:-.04em}
.sax-instruments canvas{display:block}
.sax-instruments :is(.tm__sheet,.atm-backdrop){z-index:300}
.sax-instruments [data-tm-trend]{font-variant-numeric:tabular-nums}
.sax-brain .sax-snapshot{margin-top:32px}
.sax-brain .region,.sax-brain .pulse-card{min-width:0}
.sax-brain .region-pill{white-space:nowrap;font-size:11px}
.sax-weather main{padding-bottom:40px}
.sax-weather .page-intro{padding-block:42px 24px}
.sax-weather .page-intro h1{font-size:clamp(34px,4vw,54px)}
.sax-weather :where(input){font-size:16px;min-height:48px}
.sax-weather :where(.radar-btn,.expand-btn,#ai-send,.fs-close){min-height:44px;min-width:44px;font-size:12px}
.sax-weather :where(.card,.fc-day){min-width:0}
.sax-weather .radar-controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.sax-weather .radar-time{min-width:150px;flex:1;font-size:12px}
.sax-weather #radar-map{z-index:1;isolation:isolate;min-height:280px}
.sax-weather .fs-overlay{z-index:300!important;background:var(--bg);overscroll-behavior:contain}
.sax-weather .fs-content{overflow:auto;max-height:calc(100dvh - 90px)}
.sax-weather .sax-weather-error{padding:28px;border:1px solid var(--hairline-strong);border-radius:12px;font-size:16px;color:var(--fg)}
.sax-weather .sax-weather-error p{margin-bottom:16px}
.sax-weather .chart-label{font-size:11px}
.sax-weather .leaflet-container{font-family:var(--sans);background:var(--bg-soft)}
.sax-weather .sax-weather-notice{font-size:12px;line-height:1.7;padding:12px 0;color:var(--fg-dim)}
@media(min-width:1100px){.sax-v2 article.essay{font-size:17px}.sax-v2 .hero-wrap .title{max-width:820px}}
@media(max-width:1000px){.sax-primary{gap:20px}.sax-header{gap:24px}.sax-home-hero{gap:28px;padding-block:54px}.sax-hero-copy h1{font-size:52px}.sax-about{gap:36px}}
@media(max-width:800px){.sax-primary{display:none}.sax-header{min-height:72px;padding:10px 24px}.sax-home-hero{grid-template-columns:1fr 1fr;gap:24px}.sax-hero-copy h1{font-size:43px}.sax-hero-copy>p:not(.sax-hero-footnote){font-size:16px}.sax-hero-actions{gap:14px}.sax-hero-image img{aspect-ratio:.88}.sax-feature-grid{gap:16px}.sax-feature>div{padding:20px}.sax-feature h3{font-size:21px}.sax-feature p{font-size:13px}.sax-about{grid-template-columns:1fr;gap:24px}.sax-metrics dd{font-size:30px}.sax-metrics{gap:16px}.sax-metrics>div+div{padding-left:16px}}
@media(max-width:600px){
.sax-v2{--sax-space:20px}.sax-header{padding-inline:20px;gap:12px;min-height:68px}.sax-brand{font-size:15px;gap:9px}.sax-actions{gap:8px}.sax-menu summary{padding-inline:10px}.sax-menu summary span{display:none}.sax-menu-panel{right:0;top:calc(100% + 12px);gap:4px}
.sax-home-hero{grid-template-columns:1fr;padding-block:40px 32px;gap:28px}.sax-hero-copy h1{font-size:clamp(37px,10.2vw,54px)}.sax-hero-copy>p:not(.sax-hero-footnote){font-size:16px;margin-top:22px}.sax-hero-footnote{margin-top:20px}.sax-hero-actions{gap:20px;margin-top:24px}.sax-hero-image img{aspect-ratio:1.7;max-height:260px}.sax-hero-image figcaption{font-size:10px}
.sax-snapshot{padding-block:24px}.sax-section-heading{align-items:flex-start;flex-wrap:wrap;gap:16px}.sax-snapshot .sax-section-heading{gap:16px}.sax-section-heading p{font-size:13px}.sax-snapshot-meta{align-items:flex-start;flex-direction:column;gap:4px}.sax-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 16px}.sax-metrics>div+div{border-left:0;padding-left:0}.sax-metrics>div:nth-child(even){border-left:1px solid var(--hairline);padding-left:18px}.sax-metrics dd{font-size:32px}.sax-metrics dd.sax-metric-word{font-size:24px}.sax-caption{font-size:11px}
.sax-section{padding-block:42px}.sax-feature-grid{grid-template-columns:1fr;gap:20px}.sax-feature{display:grid;grid-template-columns:110px 1fr;align-items:stretch;min-height:185px}.sax-feature>img{height:100%;aspect-ratio:auto;object-fit:cover}.sax-feature>div{padding:20px 18px}.sax-feature h3{font-size:22px}.sax-feature p{font-size:13px;margin-bottom:16px}.sax-feature>div>span{font-size:12px}
.sax-directory-row{gap:16px;padding-block:20px}.sax-directory-row h3{font-size:18px}.sax-directory-row p{font-size:13px}.sax-link-kind{font-size:11px;gap:8px;white-space:normal;min-width:28px}.sax-directory-section .sax-link-kind{min-width:70px}.sax-about .sax-link-kind{font-size:0}.sax-about h2{font-size:32px}.sax-about>div>p{font-size:15px}
.sax-page-intro{padding-block:44px 28px}.sax-page-intro h1{font-size:42px}.sax-page-intro>p{font-size:16px}.sax-directory-section{padding-top:14px;padding-bottom:24px}.sax-boundary{padding:24px 20px;margin-block:20px 44px}.sax-boundary h2{font-size:21px}.sax-boundary p{font-size:14px}.sax-footer{grid-template-columns:1fr;gap:24px;padding-block:32px}.sax-footer nav{justify-self:start;gap:0 32px}.sax-footer p{margin-top:10px}.sax-footer .sax-copyright{grid-column:auto}
.sax-v2 main>.hero{padding-top:36px}.sax-v2 .title{font-size:40px}.sax-v2 .deck{font-size:16px}.sax-v2 .hero-art,.sax-v2 .topic-hero-art{aspect-ratio:1.6;margin-top:26px}.sax-v2 .topic-hero-caption{position:static;border:0;background:var(--bg-elev);color:var(--fg);backdrop-filter:none}.sax-v2 .topic-hero-art{aspect-ratio:auto}.sax-v2 .topic-hero-art .topic-hero-img{aspect-ratio:1.7;height:auto}.sax-v2 .topic-hero-caption strong{font-size:15px}.sax-v2 .topic-hero-caption span{color:var(--fg-dim);font-size:10px}.sax-v2 article.essay{font-size:16px;line-height:1.8}.sax-v2 article.essay h2{font-size:25px;margin-top:34px}.sax-v2 article.essay .anchor{position:static;display:inline-flex;vertical-align:middle;margin-right:8px;opacity:1}.sax-v2 article.essay .anchor svg{width:16px;height:16px}.sax-v2 article.essay pre{padding:16px;font-size:12px}.sax-v2 .visual-crosslinks{grid-template-columns:1fr}.sax-v2 .visual-card img{aspect-ratio:2.5}
.sax-instruments :is(.fp,.tm,.ss){padding-block:28px;margin-bottom:20px}.sax-instruments .tm__sheet-panel{max-width:100vw}.sax-instruments .ss__stat,.sax-instruments .fp-vital{min-width:0}.sax-instruments .tm__controls{flex-wrap:wrap}.sax-weather .section-title{flex-wrap:wrap;row-gap:8px}.sax-weather .chart-label{font-size:12px}.sax-weather .hero{padding:24px 0}.sax-weather .g4{grid-template-columns:repeat(2,minmax(0,1fr))}.sax-weather .hero-temp{font-size:64px}.sax-weather .radar-time{flex-basis:100%;order:5}.sax-weather .forecast-strip{padding-bottom:14px}.sax-weather .fc-day{flex-basis:100px;min-width:100px}
}
@media(prefers-reduced-motion:reduce){.sax-v2,.sax-v2 *,.sax-v2 *::before,.sax-v2 *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}html{scroll-behavior:auto!important}}

/* A dated historical graph must not show a contradictory nominal/live badge. */
.sax-instruments[data-snapshot-state="stale"] :is([data-pulse-statustext],[data-storm-statustext]),
.sax-instruments[data-snapshot-state="unavailable"] :is([data-pulse-statustext],[data-storm-statustext]){display:none!important}
.sax-instruments .sax-sample-warning{border-left:3px solid var(--accent);padding:10px 16px;margin:0 0 20px;background:var(--bg-elev);font-size:13px;color:var(--fg)}
.sax-weather .sr-item{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid var(--hairline);font-size:14px;background:var(--bg-elev);color:var(--fg);min-height:48px;cursor:pointer}
.sax-weather .sr-item:hover{background:var(--bg-soft)}
.sax-weather .weather-hero{padding-block:44px 26px}
.sax-weather .weather-hero h1{font-size:clamp(34px,4vw,54px)}
.sax-weather .fs-overlay{padding:70px 20px 20px}
.sax-weather .fs-close{z-index:310!important}