:root{
  --ink:#111614; --muted:#5a6461; --line:#dfe4e2; --bg:#fbfcfb;
  --accent:#0f4d3a; --card:#ffffff; --max:940px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.6 ui-sans-serif,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
.wrap{max-width:var(--max); margin:0 auto; padding:0 22px}
header{border-bottom:1px solid var(--line); background:var(--card)}
.bar{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:15px 0}
.mark{font-weight:700; letter-spacing:.14em; font-size:13px; text-transform:uppercase; color:var(--accent); text-decoration:none}
.mark small{display:block; letter-spacing:.02em; font-weight:400; text-transform:none; color:var(--muted); font-size:11px}
.tag{font-size:12px; color:var(--muted); border:1px solid var(--line); border-radius:999px; padding:4px 10px; white-space:nowrap}
h1{font-size:clamp(28px,5.2vw,44px); line-height:1.12; letter-spacing:-.02em; margin:44px 0 14px}
.lede{font-size:clamp(16px,2.1vw,19px); color:var(--muted); max-width:34em; margin:0 0 26px}
.cta{
  display:inline-block; background:var(--accent); color:#fff; text-decoration:none;
  font-weight:600; padding:13px 22px; border-radius:8px;
}
.cta.secondary{background:transparent; color:var(--accent); border:1px solid var(--accent); margin-left:8px}
section{padding:40px 0; border-top:1px solid var(--line)}
h2{font-size:20px; letter-spacing:-.01em; margin:0 0 14px}
.grid{display:grid; gap:14px; grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.card{background:var(--card); border:1px solid var(--line); border-radius:10px; padding:16px}
.card h3{margin:0 0 6px; font-size:14px}
.card p{margin:0; font-size:14px; color:var(--muted)}
ol.steps{counter-reset:s; list-style:none; padding:0; margin:0; display:grid; gap:12px}
ol.steps li{counter-increment:s; padding-left:38px; position:relative; color:var(--muted); font-size:15px}
ol.steps li::before{
  content:counter(s); position:absolute; left:0; top:0; width:26px; height:26px; border-radius:50%;
  background:var(--accent); color:#fff; font-size:13px; font-weight:600; display:grid; place-items:center;
}
ol.steps strong{color:var(--ink); display:block}
.note{border-left:3px solid var(--accent); padding:2px 0 2px 14px; color:var(--muted); font-size:14px; margin:18px 0 0}
form{display:grid; gap:12px; max-width:560px}
.row{display:grid; gap:12px; grid-template-columns:1fr 1fr}
label{font-size:13px; font-weight:600; display:block; margin-bottom:5px}
input,select,textarea{
  width:100%; font:inherit; font-size:15px; padding:10px 12px; border:1px solid var(--line);
  border-radius:7px; background:#fff; color:var(--ink)
}
textarea{min-height:76px; resize:vertical}
.check{display:flex; gap:10px; align-items:flex-start; font-size:14px; color:var(--muted)}
.check input{width:auto; margin-top:3px}
button{
  font:inherit; font-weight:600; background:var(--accent); color:#fff; border:0;
  padding:13px 22px; border-radius:8px; cursor:pointer; justify-self:start
}
.hp{position:absolute; left:-9999px}
footer{border-top:1px solid var(--line); background:var(--card); padding:26px 0; font-size:13px; color:var(--muted)}
footer .ruo{color:var(--ink); font-weight:600; margin-bottom:8px}
a{color:var(--accent)}

/* document pages: terms, privacy, research use */
.doc{padding-bottom:60px}
.doc h2{font-size:18px; margin:34px 0 10px}
.doc h3{font-size:15px; margin:22px 0 6px}
.doc p,.doc li{font-size:15px; color:#39413f}
.doc ul{padding-left:20px}
.doc dl{margin:12px 0}
.doc dt{font-weight:600; font-size:14px; margin-top:12px}
.doc dd{margin:4px 0 0; font-size:14px; color:#39413f}
.meta{font-size:13px; color:var(--muted); border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:10px 0; margin:0 0 26px}
.back{font-size:13px; display:inline-block; margin:24px 0 0}

@media (max-width:560px){
  .row{grid-template-columns:1fr}
  .cta.secondary{margin:10px 0 0}
}

.skip{
  position:absolute; left:-9999px; top:0; background:var(--accent); color:#fff;
  padding:10px 16px; border-radius:0 0 8px 0; font-size:14px; z-index:10
}
.skip:focus{left:0}