body{font-family:system-ui,sans-serif;line-height:1.65;color:#172033;background:#f6f8fc;margin:0;padding:32px 18px}main{max-width:760px;margin:auto;background:white;padding:32px;border-radius:18px}h1{line-height:1.2}a{color:#315cd5}nav{display:flex;gap:16px;flex-wrap:wrap}@media(max-width:500px){main{padding:20px}}