:root{--ink:#1d2329;--muted:#5d6873;--line:#e3e7ea;--bg:#fbfbf9;--acc:#2f6f5e}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
header,footer,main{max-width:980px;margin:0 auto;padding:0 20px}
header{display:flex;justify-content:space-between;align-items:center;padding-top:26px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.logo{font-weight:700;letter-spacing:.02em;color:var(--ink)}.logo span{color:var(--acc)}
nav a{margin-left:22px;color:var(--muted)}
.hero{padding:72px 0 48px}.hero h1{font-size:42px;line-height:1.15;margin:0 0 18px;max-width:700px}
.hero p{font-size:19px;color:var(--muted);max-width:620px}
.btn{display:inline-block;margin-top:18px;padding:12px 22px;background:var(--acc);color:#fff;border-radius:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px;padding:24px 0 64px}
.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px}.card h3{margin-top:0}
.card p{color:var(--muted);margin-bottom:0}
section h2{font-size:28px;margin:48px 0 8px}
footer{border-top:1px solid var(--line);padding-top:26px;padding-bottom:40px;color:var(--muted);font-size:14px}
@media(max-width:600px){.hero h1{font-size:30px}nav a{margin-left:12px}}