:root{--ink:#1f2328;--muted:#6b7280;--line:#e5e7eb;--accent:#0f766e;--bg:#fbfbfa}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;font-family:"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);background:#fff}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;letter-spacing:.02em;color:var(--ink)}
nav a{margin-left:22px;color:var(--ink);font-size:15px}
nav a.active{color:var(--accent)}
.hero{padding:72px 0 48px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 16px;font-weight:700}
.hero p{font-size:18px;color:var(--muted);max-width:560px;margin:0 0 28px}
.btn{display:inline-block;padding:11px 20px;border-radius:8px;background:var(--accent);color:#fff;font-weight:600}
.btn:hover{text-decoration:none;opacity:.92}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin:24px 0 56px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .tag{display:inline-block;font-size:12px;color:var(--accent);background:#ecfdf5;border-radius:999px;padding:2px 10px;margin-bottom:12px}
section{padding:32px 0}
section h2{font-size:26px;margin:0 0 12px}
section p{color:var(--muted);max-width:640px}
dl{display:grid;grid-template-columns:140px 1fr;gap:8px 16px;max-width:520px}
dt{color:var(--muted)}
footer{border-top:1px solid var(--line);margin-top:40px;padding:28px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
@media (max-width:600px){.hero h1{font-size:30px}nav a{margin-left:14px}}