body {
  margin:0;
  font-family: Arial, sans-serif;
  background:#f4f6f9;
}

.container {
  display:flex;
  justify-content:space-between;
  align-items:center;
}

header {
  background:#111;
  color:#fff;
  padding:20px 40px;
}

nav a {
  color:#fff;
  margin-left:20px;
  text-decoration:none;
}

.hero {
  background:linear-gradient(120deg,#007bff,#00c6ff);
  color:#fff;
  text-align:center;
  padding:100px 20px;
}

.btn {
  display:inline-block;
  margin-top:20px;
  padding:12px 25px;
  background:#fff;
  color:#007bff;
  text-decoration:none;
  border-radius:5px;
}

.content {
  padding:60px 20px;
  max-width:1000px;
  margin:auto;
}

.gray {
  background:#eef1f5;
}

.grid {
  display:flex;
  gap:20px;
}

.card {
  background:#fff;
  padding:20px;
  flex:1;
  border-radius:8px;
  box-shadow:0 2px 10px rgba(0,0,0,0.1);
}

footer {
  text-align:center;
  padding:30px;
  background:#111;
  color:#fff;
}