:root{font-family:Arial,sans-serif;color:#17243b;background:#f4f8fa}body{margin:0}main{max-width:780px;margin:3rem auto;background:#fff;border-radius:18px;padding:clamp(1.4rem,4vw,3rem);box-shadow:0 12px 40px #163b4a18}h1{color:#075965;font-size:clamp(2rem,6vw,3rem)}h2{margin-top:2rem}p{line-height:1.7}a{color:#075965;font-weight:700}footer{margin-top:2.5rem;padding-top:1.2rem;border-top:1px solid #d6e2e7;color:#59697a;line-height:1.6}