:root{font-family:Inter,Arial,sans-serif;color:#17243b;background:#f5f7fb}*{box-sizing:border-box}body{margin:0;line-height:1.65}header,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;gap:16px}nav{display:flex;gap:16px;flex-wrap:wrap}a{color:#1556b8}header a{text-decoration:none}header strong{font-size:1.15rem;color:#152b52}main{background:white;border:1px solid #e3e9f2;border-radius:20px;margin-top:20px;margin-bottom:20px;padding:32px}h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;margin:0 0 16px}h2{font-size:1.35rem;margin-top:32px}p,li{max-width:72ch}.lead{font-size:1.18rem;color:#42526b}.button{display:inline-block;background:#185abc;color:white;padding:10px 18px;border-radius:9px;text-decoration:none;font-weight:700}.muted,footer{color:#596981}footer{font-size:.9rem}@media(max-width:600px){header{display:block}nav{margin-top:12px}main{padding:22px}}