*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,sans-serif;color:#1f2937}
.w{max-width:960px;margin:0 auto;padding:0 20px}header{border-bottom:1px solid #e5e7eb}
header .w{display:flex;justify-content:space-between;align-items:center;height:60px}nav a{margin-left:20px;color:#374151;text-decoration:none}
.hero{background:#eef2f7;padding:70px 0}h1{font-size:34px;margin:0 0 12px}section{padding:40px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
footer{border-top:1px solid #e5e7eb;padding:24px 0;color:#6b7280;font-size:14px}