body{margin:0;background:#004b45;color:#173d32;font-family:Arial,sans-serif;line-height:1.65}main{max-width:850px;margin:24px auto;background:#f4fcf7;border:2px solid #52c4a7;border-radius:10px;padding:28px}header{text-align:center}header img{width:130px}h1,h2{color:#006c60}nav{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;border-bottom:3px solid #ffcc00;padding-bottom:16px}a{color:#006c60}li{margin:8px 0}.note{padding:12px;background:#fff2b8;border:1px solid #c4a83e}footer{border-top:1px solid #a5c7b4;margin-top:24px;padding-top:12px;font-size:13px}@media(max-width:600px){main{margin:10px;padding:18px}}