*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#17202a;background:#fff;line-height:1.6}
header{background:#111827;color:#fff;padding:18px 6%}nav{display:flex;gap:18px;flex-wrap:wrap;align-items:center}nav a{color:#fff;text-decoration:none}.brand{font-size:1.3rem;font-weight:700;margin-right:auto}
main{max-width:1000px;margin:auto;padding:48px 6%}h1{font-size:2.4rem;line-height:1.15}h2{margin-top:38px}.lead{font-size:1.15rem;color:#374151}
.cta{display:inline-block;background:#111827;color:white;text-decoration:none;padding:13px 20px;border-radius:8px;font-weight:700;margin:12px 0}
.card{border:1px solid #e5e7eb;border-radius:12px;padding:22px;margin:18px 0;background:#fafafa}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
footer{border-top:1px solid #e5e7eb;padding:30px 6%;font-size:.9rem;color:#4b5563;max-width:1000px;margin:auto}
small{color:#6b7280}.note{background:#f3f4f6;padding:14px;border-radius:8px}