:root{
  --green:#22a447; --green-d:#1f7a3a; --green-l:#3fbf4f;
  --ink:#12211a; --muted:#5b6b62; --bg:#ffffff; --card:#f6faf7; --line:#e2ece6;
  --radius:14px; --shadow:0 6px 24px rgba(20,80,40,.08);
}
@media (prefers-color-scheme:dark){
  :root{--ink:#e8f3ec;--muted:#9db4a7;--bg:#0e1512;--card:#141d18;--line:#22302a;--shadow:0 6px 24px rgba(0,0,0,.4);}
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 22px}
header.nav{position:sticky;top:0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.1rem;color:var(--ink)}
.brand img{width:38px;height:38px}
.brand small{display:block;font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
nav.links a{margin-left:22px;color:var(--ink);font-weight:500}
.btn{display:inline-block;background:var(--green);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;border:0;cursor:pointer;transition:.15s}
.btn:hover{background:var(--green-d);text-decoration:none}
.btn.ghost{background:transparent;color:var(--green);border:1.5px solid var(--green)}
.hero{padding:76px 0 54px;text-align:center;background:radial-gradient(1000px 400px at 50% -80px,color-mix(in srgb,var(--green) 14%,transparent),transparent)}
.hero h1{font-size:2.7rem;line-height:1.15;margin:.2em 0}
.hero p.lead{font-size:1.18rem;color:var(--muted);max-width:680px;margin:0 auto 26px}
.badge{display:inline-block;background:var(--card);border:1px solid var(--line);color:var(--green-d);padding:6px 14px;border-radius:999px;font-size:.82rem;font-weight:600;margin-bottom:18px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:820px){.g3,.g2{grid-template-columns:1fr}.hero h1{font-size:2rem}.nav .links{display:none}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin:.2em 0 .4em;font-size:1.12rem}
.card .ico{width:42px;height:42px;border-radius:10px;background:color-mix(in srgb,var(--green) 16%,transparent);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:12px}
section{padding:56px 0}
section h2{font-size:1.8rem;text-align:center;margin:0 0 8px}
section .sub{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 34px}
.dl{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.dl .card{width:300px;text-align:center}
.tag{font-size:.72rem;background:color-mix(in srgb,var(--green) 18%,transparent);color:var(--green-d);padding:3px 9px;border-radius:6px;font-weight:600}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:.9rem}
footer .foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
code{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:2px 7px;font-size:.9em}
pre{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;overflow:auto}
.toc{position:sticky;top:82px}
.doc{display:grid;grid-template-columns:220px 1fr;gap:40px}
@media(max-width:820px){.doc{grid-template-columns:1fr}.toc{position:static}}
.toc a{display:block;padding:6px 0;color:var(--muted)}
.step{border-left:3px solid var(--green);padding:6px 0 6px 18px;margin:14px 0}