body{font-family:system-ui, -apple-system, "Segoe UI", sans-serif;color:#222;background:#f7f7f9;margin:0;padding:1em;line-height:1.4}h1{font-size:2rem;margin-bottom:0.5em;color:#cc0000}h2{font-size:1.5rem;margin-bottom:0.4em;color:#185e99}h3{font-size:1.2rem;margin-bottom:0.3em;font-weight:normal}section{background:#fff;padding:1em 1.5em;margin:1.5em 0;border-radius:6px;border:1px solid #ccc;max-width:700px;box-sizing:border-box}footer{text-align:center;font-size:0.9rem;color:#888;margin-top:3em}