*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;color:#173f2b;line-height:1.6}header{padding:25px 7%;background:#fff;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}header h1{margin:0;font-size:1.8rem}nav{display:flex;gap:20px;flex-wrap:wrap}nav a{color:#173f2b;text-decoration:none;font-weight:bold}.hero{background:linear-gradient(135deg,#123c28,#2d7951);color:white;padding:100px 10%;min-height:420px}.hero h2{font-size:3rem;max-width:700px;line-height:1.15}section{padding:60px 8%;text-align:center}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.grid div{background:#f1f6f2;padding:25px;border-radius:12px;text-align:left}footer{background:#123c28;color:white;text-align:center;padding:25px}@media(max-width:600px){.hero h2{font-size:2.2rem}}