:root{
  --green:#11aa66; --green-d:#0c7d4d; --ink:#182821; --muted:#5b6b63;
  --bg:#f5f9f7; --line:#e3ede8;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:#fff;line-height:1.65;font-size:17px}
img{max-width:100%}
a{color:var(--green-d)}
h1,h2,h3{line-height:1.2}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}

header.nav{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);z-index:20}
header.nav .wrap{display:flex;align-items:center;gap:16px;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none}
.brand img{width:30px;height:30px;display:block}
header.nav nav{margin-left:auto;display:flex;gap:20px}
header.nav nav a{color:var(--ink);text-decoration:none;font-weight:500}
header.nav nav a:hover{color:var(--green-d)}

.btn{display:inline-block;background:var(--green);color:#fff;padding:13px 24px;border-radius:10px;
  text-decoration:none;font-weight:600;border:0;cursor:pointer}
.btn:hover{background:var(--green-d);color:#fff}

.hero{background:var(--bg);border-bottom:1px solid var(--line);padding:66px 0}
.hero h1{font-size:42px;margin:0 0 16px;letter-spacing:-.5px}
.hero .lead{font-size:20px;color:var(--muted);max-width:660px;margin:0 0 28px}
.hero .sub{margin-top:14px;font-size:14px;color:var(--muted)}

section{padding:52px 0}
section h2{font-size:27px;margin:0 0 20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.card{border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff}
.card h3{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.steps{counter-reset:s;display:grid;gap:16px}
.steps li{list-style:none;position:relative;padding-left:52px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:-2px;width:34px;height:34px;
  background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}
.alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.muted{color:var(--muted)}
.prose p{margin:0 0 14px}
.prose h2{margin-top:38px}
.prose h3{margin-top:24px;font-size:19px}
.prose ul{padding-left:22px}
.prose li{margin:6px 0}

footer{background:#0f1f19;color:#cfe3d9;padding:44px 0;margin-top:8px;font-size:15px}
footer a{color:#9fe3c2}
footer .cols{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between}
footer h4{margin:0 0 10px;color:#fff;font-size:15px}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin:6px 0}
footer .fine{margin-top:26px;padding-top:18px;border-top:1px solid #24463a;color:#8fb3a4;font-size:13px}

@media(max-width:600px){
  .hero h1{font-size:31px}.hero{padding:46px 0}.hero .lead{font-size:18px}
  header.nav nav{gap:14px}
}