*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#14171c;background:#fff}
a{color:#0b5fff}.w{max-width:860px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid #e6e8ec}header .w{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{font-weight:800;font-size:20px;color:#14171c;text-decoration:none}.logo span{color:#0b5fff}
.hero{padding:72px 0 48px}.hero h1{font-size:40px;line-height:1.15;margin:0 0 16px}.hero p{font-size:19px;color:#4a5160;margin:0 0 28px}
.btn{display:inline-block;background:#0b5fff;color:#fff;padding:14px 24px;border-radius:10px;font-weight:700;text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;padding:8px 0 56px}
.card{border:1px solid #e6e8ec;border-radius:14px;padding:20px}.card h3{margin:0 0 6px;font-size:18px}.card p{margin:0;color:#4a5160}
h2{font-size:26px;margin:40px 0 12px}ol{padding-left:20px}li{margin:6px 0}
footer{border-top:1px solid #e6e8ec;padding:24px 0;color:#6b7280;font-size:14px;margin-top:40px}
.doc h1{font-size:32px;margin:40px 0 4px}.doc h2{font-size:20px;margin:28px 0 8px}.muted{color:#6b7280}
@media(max-width:600px){.hero h1{font-size:30px}}