*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#222;background:#fafafa}
header,main,footer{max-width:760px;margin:0 auto;padding:1.2rem}header{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid #e5e5e5}
header a.brand{font-weight:700;font-size:1.2rem;color:#111;text-decoration:none}nav a{margin-left:1rem;color:#444;text-decoration:none}nav a:hover{text-decoration:underline}
h1{font-size:2rem;line-height:1.2}.card{background:#fff;border:1px solid #e8e8e8;border-radius:8px;padding:1rem 1.2rem;margin:1rem 0}
.card h3{margin:.2rem 0}footer{color:#777;font-size:.85rem;border-top:1px solid #e5e5e5;margin-top:2rem}a{color:#0b5cad}