/* Emthera website. Plain CSS, no external fonts or scripts. Colours follow the Hub's pages ("strak en compact"). */
/* Outfit (SIL Open Font License 1.1), only for the name next to the logo; chosen 13 November 2026. */
@font-face{font-family:"Outfit";src:url(fonts/outfit-600.woff2) format("woff2");font-weight:600;font-display:swap}
:root{color-scheme:light dark;--bg:#f4f5f6;--panel:#fff;--line:#e9eaee;--ink:#1c1e21;--ink2:#6b7079;--ink3:#a1a5ad;--blue:#006fff;--green:#39a85a;--amber:#f0a020;--warm:#f5622e}
@media (prefers-color-scheme:dark){:root{--bg:#0f1114;--panel:#17191d;--line:#272b31;--ink:#e4e6ea;--ink2:#9aa0aa;--ink3:#6a707a;--blue:#4c93ff;--green:#4cc070;--amber:#f2ae3d}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;font-variant-numeric:tabular-nums}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}

/* header */
.top{background:var(--panel);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;height:56px}
.brand{display:flex;align-items:center;gap:8px;color:var(--ink);font:600 18px/1 "Outfit","Segoe UI",system-ui,sans-serif}
.brand:hover{text-decoration:none}
.brand svg{width:26px;height:26px}
.nav{display:flex;gap:18px;font-size:14px;overflow-x:auto;scrollbar-width:none}
.nav a{color:var(--ink2);white-space:nowrap;padding:17px 0}
.nav a[aria-current]{color:var(--ink);box-shadow:inset 0 -2px var(--ink)}
.nav a:hover{color:var(--ink);text-decoration:none}
.lang{margin-left:auto;font-size:13px;color:var(--ink2);border:1px solid var(--line);border-radius:6px;padding:3px 9px;white-space:nowrap}

/* sections */
main.wrap{padding-top:36px;padding-bottom:8px}
section{margin:0 0 36px}
h1{font-size:26px;line-height:1.25;font-weight:600;margin:0 0 12px;max-width:30ch}
h2{font-size:15px;font-weight:600;margin:0 0 10px}
p{margin:0 0 10px;max-width:68ch}
.lead{color:var(--ink2);font-size:16px}
.mut{color:var(--ink2)}
.small{font-size:13px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px}

/* home: hero, key figures, buttons */
.hero{padding:20px 0 4px}
.hero h1{font-size:36px;line-height:1.15;letter-spacing:-.01em;max-width:18ch;margin-bottom:14px}
.hero .lead{font-size:18px;max-width:56ch}
.acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{display:inline-block;padding:8px 16px;border-radius:6px;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-size:14px}
.btn:hover{text-decoration:none;border-color:var(--ink3)}
.btn.pri{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.keys{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.keys>div{padding:12px 16px;border-right:1px solid var(--line)}.keys>div:last-child{border-right:0}
.keys .lb{color:var(--ink2);font-size:12px}.keys .nr{font-size:18px;font-weight:600;margin-top:2px}
.why{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:start}
.sub-h{font-size:22px;font-weight:600;margin:0 0 6px}
.intro{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:end}
.facts{margin:0;font-size:13px}
.facts div{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px solid var(--line)}
.facts div:last-child{border-bottom:0}
.facts dt{color:var(--ink2)}.facts dd{margin:0;text-align:right}

figure{margin:0}
figure.shot{overflow:hidden}
figure.shot img{border-bottom:1px solid var(--line)}
figcaption{padding:8px 14px;font-size:13px;color:var(--ink2)}

.cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px}
ul.plain{list-style:none;margin:0;padding:0}
ul.plain li{padding:7px 0;border-bottom:1px solid var(--line)}

table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;font-weight:400;color:var(--ink2);font-size:13px;padding:9px 14px;border-bottom:1px solid var(--line)}
td{padding:9px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
td:first-child{width:50%}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);margin:0 7px 1px 0;vertical-align:middle}
.dot.dev{background:var(--amber)}

ol.steps{margin:0;padding:0;list-style:none;counter-reset:s}
ol.steps li{counter-increment:s;display:grid;grid-template-columns:28px minmax(0,1fr);padding:10px 0;border-bottom:1px solid var(--line)}
ol.steps li:last-child{border-bottom:0}
ol.steps li::before{content:counter(s);color:var(--ink3)}
ol.steps b{font-weight:600}

.note{border-left:2px solid var(--line);padding:2px 0 2px 12px;color:var(--ink2);font-size:14px}

footer{border-top:1px solid var(--line);margin-top:12px;padding:18px 0 28px;font-size:13px;color:var(--ink2)}
footer .wrap{display:flex;flex-wrap:wrap;gap:6px 24px}
footer p{margin:0}

/* what you can do with it */
.can{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px 28px;border-top:1px solid var(--line);padding-top:18px}
.can h2{margin-bottom:6px}
.can dl{margin:0}
.can dt{font-weight:600;font-size:14px;margin-top:12px}
.can dd{margin:2px 0 0;color:var(--ink2);font-size:14px}

/* firmware page */
.fwp{margin:0 0 16px}
#fw{margin:0 0 36px}
.fwp .ph{padding:10px 16px;border-bottom:1px solid var(--line)}
.fwp .ph h2{margin:0}
.fwb{padding:12px 16px 14px}
.rel{padding:4px 0 12px}
.rel .facts{max-width:420px;margin-bottom:8px}
.older .rel,.beta .rel{border-top:1px solid var(--line);padding-top:10px;margin-top:6px}
.sha{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;max-width:none}
.sha .small{width:100%}
.sha code{font:12px/1.4 ui-monospace,"Cascadia Mono",Consolas,monospace;word-break:break-all;background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:3px 6px}
.btn.copy{padding:3px 10px;font-size:13px;cursor:pointer;font-family:inherit}
.rel .acts{margin-top:8px}
details.older,details.notes{margin-top:8px}
details summary{cursor:pointer;color:var(--ink2);font-size:14px}
details .md{padding:6px 0 0;font-size:14px}
details .md ul{padding-left:20px;margin:0 0 8px}
.beta{border-top:1px solid var(--line);margin-top:12px;padding-top:10px}

/* manual overview */
ul.docs{list-style:none;margin:0;padding:0}
ul.docs li{padding:11px 16px;border-bottom:1px solid var(--line)}
ul.docs li:last-child{border-bottom:0}
ul.docs .desc{display:block;color:var(--ink2);font-size:14px}

/* search */
.search{position:relative;margin:0 0 16px}
.search input{width:100%;font:inherit;font-size:14px;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:7px 10px}
.search input:focus{outline:2px solid var(--blue);outline-offset:-1px}
.results{list-style:none;margin:6px 0 0;padding:0;background:var(--panel);border:1px solid var(--line);border-radius:6px;max-height:70vh;overflow:auto;position:absolute;left:0;z-index:10;width:min(560px,calc(100vw - 32px));box-shadow:0 6px 24px rgba(0,0,0,.12)}
.results li{border-bottom:1px solid var(--line)}.results li:last-child{border-bottom:0}
.results a{display:block;padding:8px 12px;color:var(--ink)}.results a:hover{background:var(--bg);text-decoration:none}
.results b{font-weight:600;font-size:14px}.results .where{color:var(--ink2);font-size:12px;margin-left:8px}
.results .snip{display:block;color:var(--ink2);font-size:13px}.results mark{background:none;color:var(--ink);font-weight:600}
.results .more{padding:8px 12px;color:var(--ink2);font-size:13px}

/* manual pages */
.doc{display:grid;grid-template-columns:230px minmax(0,1fr);gap:36px;align-items:start}
.side{position:sticky;top:12px;max-height:calc(100vh - 24px);overflow:auto;font-size:14px;padding-bottom:12px}
.side-h{margin:14px 0 4px;color:var(--ink2);font-size:12px}
.side-h a{color:var(--ink2)}
.side ul{list-style:none;margin:0;padding:0}
.side li a{display:block;padding:3px 0 3px 10px;color:var(--ink2);border-left:1px solid var(--line)}
.side li a:hover{color:var(--ink);text-decoration:none}
.side li a[aria-current]{color:var(--ink);border-left-color:var(--ink)}
.side .side-toc a{font-size:13px}
.prose{min-width:0;max-width:780px}
.crumb{font-size:13px;color:var(--ink2);margin-bottom:10px}
.prose .note{margin:0 0 22px}
.prose h1{font-size:24px;margin:6px 0 14px}
.prose h2{font-size:19px;margin:34px 0 10px;padding-top:14px;border-top:1px solid var(--line)}
.prose h3{font-size:16px;font-weight:600;margin:24px 0 8px}
.prose h4{font-size:15px;font-weight:600;margin:18px 0 6px}
.prose h1,.prose h2,.prose h3,.prose h4{scroll-margin-top:12px}
.header-anchor{color:var(--ink3);margin-left:6px;font-weight:400;opacity:0}
h1:hover .header-anchor,h2:hover .header-anchor,h3:hover .header-anchor,h4:hover .header-anchor{opacity:1}
.prose p,.prose li{max-width:72ch}
.prose ul,.prose ol{padding-left:22px;margin:0 0 12px}
.prose li{margin:3px 0}
.prose li>p{margin:0 0 6px}
.prose blockquote{margin:0 0 14px;padding:2px 0 2px 14px;border-left:2px solid var(--line);color:var(--ink2)}
.prose blockquote p{margin:0 0 6px}
.prose code{font:13px/1.4 ui-monospace,"Cascadia Mono",Consolas,monospace;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:0 4px}
.prose pre{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:10px 12px;overflow:auto;margin:0 0 14px}
.prose pre code{border:0;padding:0;background:none}
.prose img{border:1px solid var(--line);border-radius:6px;margin:8px 0 14px}
.prose details{border:1px solid var(--line);border-radius:6px;padding:8px 12px;margin:0 0 14px;background:var(--panel)}
.prose summary{cursor:pointer;color:var(--ink)}
.tw{overflow-x:auto;margin:0 0 14px;border:1px solid var(--line);border-radius:6px;background:var(--panel)}
.tw table{font-size:13px}
.tw th{white-space:nowrap}
.tw td:first-child{width:auto}
.prose .task-list-item{list-style:none;margin-left:-22px}
.prose .task-list-item-checkbox{margin:0 8px 0 0;vertical-align:-1px;accent-color:var(--blue)}
.prose hr{border:0;border-top:1px solid var(--line);margin:24px 0}

.can.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:1000px){.can,.can.three{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){
  .keys{grid-template-columns:repeat(2,minmax(0,1fr))}
  .keys>div:nth-child(2){border-right:0}.keys>div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .why{grid-template-columns:minmax(0,1fr);gap:8px}
  .hero h1{font-size:28px}
  .hero .lead{font-size:16px}
}
@media (max-width:860px){
  .intro{grid-template-columns:minmax(0,1fr);gap:16px}
  .doc{grid-template-columns:minmax(0,1fr);gap:8px}
  .side{position:static;max-height:none;border-bottom:1px solid var(--line)}
  .side .onpage,.side .side-toc{display:none}
  .side-docs{display:flex;flex-wrap:wrap;gap:2px 14px}
  .side li a{border-left:0;padding:2px 0}
}
@media (max-width:640px){.can,.can.three{grid-template-columns:minmax(0,1fr)}}
@media (max-width:640px){
  body{font-size:15px}
  .top .wrap{height:auto;flex-wrap:wrap;gap:0 16px;padding-top:10px}
  .nav{order:3;width:100%;margin:0 -16px;padding:0 16px}
  .nav a{padding:10px 0 11px}
  main.wrap{padding-top:24px}
  h1{font-size:22px}
  .cols{grid-template-columns:minmax(0,1fr)}
  th,td{padding:9px 10px}
  td:first-child{width:auto}
}