:root{font-family:system-ui,sans-serif;color:#edf3ff;background:#101b36}body{margin:0;padding:24px}main{max-width:720px;margin:40px auto}h1{font-size:40px;color:#9bd6ff}section{padding:16px 24px;background:#1b2b4d;border-radius:12px;margin:16px 0}h2{font-size:20px}p{line-height:1.6}