:root{
  --bg:#0a0d12; --panel:#12161d; --panel-2:#171c24; --line:#232a35;
  --text:#e8edf3; --text-2:#9aa6b6; --text-3:#6b7788;
  --cyan:#35d0c8; --green:#4ade80; --amber:#f5a623; --red:#ff5d5d; --grey:#3a4350;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Charter,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.6 var(--sans);}
a{color:var(--cyan)}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header.top{padding:22px 0}
header.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px}
.mark{font-family:var(--serif);font-size:19px;color:var(--text);text-decoration:none;letter-spacing:.01em}
.mark b{font-weight:700}
nav a{color:var(--text-2);text-decoration:none;margin-left:20px;font-size:15px}
nav a:hover{color:var(--text)}

/* hero */
.hero{padding:36px 0 64px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
h1{font-family:var(--serif);font-weight:600;font-size:clamp(34px,5.2vw,56px);line-height:1.08;letter-spacing:-.015em;margin:0 0 22px}
.lede{color:var(--text-2);font-size:19px;max-width:30em;margin:0 0 30px}
.cta{display:inline-flex;align-items:center;gap:10px;background:var(--text);color:#0a0d12;text-decoration:none;font-weight:600;padding:14px 22px;border-radius:12px;font-size:16px}
.cta:hover{background:#fff}
.cta svg{width:20px;height:20px;fill:#0a0d12}
.soon{margin:16px 0 0;color:var(--text-3);font-size:14px}

/* headroom demo */
.demo{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px}
.demo-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:6px}
.demo-head h2{font-family:var(--serif);font-size:20px;margin:0;font-weight:600}
.demo-head span{font-size:13px;color:var(--text-3)}
.trade{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:10px 0 14px;font-size:14px;color:var(--text-2)}
.trade button{font:inherit;font-family:var(--mono);font-size:13px;color:var(--text-2);background:var(--panel-2);border:1px solid var(--line);padding:6px 11px;border-radius:999px;cursor:pointer}
.trade button[aria-pressed="true"]{color:#0a0d12;background:var(--cyan);border-color:var(--cyan);font-weight:600}
.dow,.grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:5px}
.dow span{text-align:center;font-size:11px;color:var(--text-3);padding-bottom:4px}
.day{font-family:var(--mono);font-variant-numeric:tabular-nums;background:var(--panel-2);border:1px solid transparent;border-radius:8px;color:var(--text);padding:5px 2px 6px;cursor:pointer;text-align:center;min-width:0}
.day small{display:block;font-size:10px;color:var(--text-2)}
.day strong{display:block;font-size:12.5px;font-weight:600;letter-spacing:-.03em}
.day.g{background:#14301f;border-color:#1e4a2f}
.day.a{background:#3a2c10;border-color:#5a4318}
.day.r{background:#3a1717;border-color:#5a2222}
.day.n{background:#232831;border-color:#2e3541;color:var(--text-2)}
.day.nofit{opacity:.38;background-image:repeating-linear-gradient(135deg,transparent 0 5px,rgba(255,93,93,.35) 5px 6px)}
.day[aria-pressed="true"]{outline:2px solid var(--cyan);outline-offset:1px}
.readout{margin:14px 0 0;min-height:3.4em;font-size:15px;color:var(--text);}
.readout .m{font-family:var(--mono)}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin:12px 0 0;font-size:12px;color:var(--text-3)}
.legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:baseline}

/* content */
section.block{padding:56px 0;border-top:1px solid var(--line)}
section.block h2{font-family:var(--serif);font-weight:600;font-size:clamp(26px,3.6vw,34px);line-height:1.15;margin:0 0 28px;letter-spacing:-.01em}
.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px}
.cols h3{font-family:var(--serif);font-size:20px;margin:0 0 8px;font-weight:600}
.cols p{margin:0;color:var(--text-2)}
.narrow{max-width:40em}
dl.faq{margin:0;max-width:44em}
dl.faq dt{font-weight:600;margin-top:26px}
dl.faq dt:first-child{margin-top:0}
dl.faq dd{margin:6px 0 0;color:var(--text-2)}
footer{border-top:1px solid var(--line);padding:36px 0 56px;color:var(--text-3);font-size:14px}
footer p{margin:0 0 10px;max-width:46em}
footer a{color:var(--text-2)}

/* privacy / text pages */
.doc{padding:24px 0 72px;max-width:42em}
.doc h1{font-size:clamp(30px,4.5vw,42px)}
.doc h2{font-family:var(--serif);font-size:23px;margin:38px 0 8px;font-weight:600}
.doc p,.doc li{color:var(--text-2)}
.doc ul{padding-left:1.2em}
.doc .date{color:var(--text-3);font-size:14px}

@media (max-width:860px){
  .hero .wrap{grid-template-columns:minmax(0,1fr);gap:36px}
  .cols{grid-template-columns:minmax(0,1fr);gap:28px}
  nav a{margin-left:14px}
}
@media (max-width:420px){
  .wrap{padding:0 16px}
  .demo{padding:14px}
  .grid,.dow{gap:3px}
  .day{padding:4px 1px 5px}
  .day strong{font-size:11px}
}

/* header fit on narrow phones */
.mark,nav a{white-space:nowrap}
@media (max-width:480px){
  nav a:first-child{display:none}
  nav a{margin-left:16px}
}
@media (max-width:360px){
  nav a{margin-left:12px;font-size:14px}
  .mark{font-size:17px}
}