:root{color-scheme:light;font-family:system-ui,sans-serif;color:#163347;background:#f4f8fb}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:850px;margin:auto;padding:28px}header{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid #d0dfe9}a{color:#076c91;text-underline-offset:4px}header a{font-weight:650}main{padding-top:48px;padding-bottom:48px}h1{font-size:clamp(2rem,6vw,3rem);line-height:1.15;margin:0 0 24px}h2{font-size:1.35rem;margin-top:32px}p,li{font-size:1.05rem;line-height:1.75}small{font-size:.9rem}footer{border-top:1px solid #d0dfe9;line-height:1.8}nav{display:flex;flex-wrap:wrap;gap:16px}@media(max-width:550px){header{flex-direction:column}header,main,footer{padding:24px}}