*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;color:#36454F;background:#fff;line-height:1.6}
nav{background:#2D3436;padding:18px 40px;position:sticky;top:0}
nav a{color:#fff;text-decoration:none;margin-right:24px;font-weight:bold}
.hero{background:#36454F;color:#fff;padding:110px 20px;text-align:center}
.hero h1{font-size:52px;margin:0}
.container{max-width:1200px;margin:auto;padding:50px 20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{border:1px solid #ddd;border-radius:8px;padding:24px}
.btn{display:inline-block;background:#2E5E4E;color:#fff;padding:14px 22px;text-decoration:none;border-radius:5px}
footer{background:#2D3436;color:#fff;padding:30px;text-align:center}
.banner{background:#B8B5B0;padding:15px;text-align:center}
h1,h2,h3{color:#36454F}
form input,form textarea{width:100%;padding:12px;margin:8px 0}