body {
  margin: 0;
  font-family: Arial;
  background: #0f172a;
  color: white;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 15px;
  background: black;
}

nav a {
  margin-left: 15px;
  color: white;
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 80px;
  background: linear-gradient(45deg, #0ea5e9, #6366f1);
}

button {
  padding: 15px 25px;
  border: none;
  cursor: pointer;
  background: black;
  color: white;
}

section {
  padding: 40px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

td, th {
  padding: 10px;
  border-bottom: 1px solid #333;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 20px;
}

.card {
  background: #1e293b;
  padding: 20px;
  border-radius: 10px;
}

footer {
  text-align: center;
  padding: 20px;
  background: black;
}