:root{--primary:#2563eb;--secondary:#22c55e;--dark:#1f2937;--light:#f9fafb}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system;background:var(--light);color:var(--dark)}a{color:var(--primary);text-decoration:none}.container{width:92%;max-width:1200px;margin:auto}header{background:linear-gradient(90deg,#2563eb,#22c55e);padding:18px 0}.nav{display:flex;justify-content:space-between;align-items:center}.nav h2{color:#fff;margin:0}.menu{list-style:none;display:flex;gap:22px}.menu li{position:relative}.menu li a{color:#fff}.menu li .sub-menu{display:none;position:absolute;background:#fff;top:100%;left:0;min-width:200px}.menu li:hover>.sub-menu{display:block}.menu li .sub-menu a{color:#111;padding:10px;display:block}.hero{background:linear-gradient(90deg,#2563eb,#22c55e);color:#fff;padding:80px 0;text-align:center}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}.card{background:#fff;padding:22px;border-radius:16px}footer{background:#111827;color:#fff;padding:40px 0;margin-top:80px}