*{box-sizing:border-box}body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:#1b1f24;background:#fbfbfc;line-height:1.65}
header{border-bottom:1px solid #e6e8eb;background:#fff}nav{max-width:920px;margin:0 auto;padding:18px 24px;display:flex;gap:26px;align-items:baseline}
nav b{font-size:17px;letter-spacing:.2px}nav a{color:#42505f;text-decoration:none;font-size:14px}nav a:hover{color:#0b62d6}
main{max-width:920px;margin:0 auto;padding:56px 24px 40px}h1{font-size:30px;margin:0 0 10px;letter-spacing:-.2px}
p.lead{font-size:17px;color:#4a5563;margin:0 0 28px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin:34px 0}
.card{border:1px solid #e6e8eb;border-radius:10px;padding:18px 20px;background:#fff}.card h3{margin:0 0 6px;font-size:15px}.card p{margin:0;font-size:14px;color:#5b6672}
footer{border-top:1px solid #e6e8eb;margin-top:40px;padding:22px 24px;color:#7a8590;font-size:13px;text-align:center}
code{background:#f2f4f7;padding:2px 6px;border-radius:5px;font-size:13px}