body{font-family:Arial,Helvetica,sans-serif;margin:0;color:#232;background:#f6f8f3}header{background:#2f5d2a;color:#fff;padding:18px 28px}header h1{margin:0;font-size:24px}nav a{color:#dff0d8;margin-right:16px;text-decoration:none}main{max-width:860px;margin:0 auto;padding:28px 20px}section{background:#fff;border:1px solid #dde6d5;border-radius:10px;padding:20px;margin-bottom:18px}h2{color:#2f5d2a;margin-top:0}footer{padding:20px;text-align:center;color:#667}