* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #0f172a;
  color: #e5e7eb;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: #020617;
  position: sticky;
  top: 0;
}

.logo {
  font-size: 1.3rem;
  font-weight: bold;
}

nav a {
  color: #e5e7eb;
  margin-left: 1rem;
  text-decoration: none;
}

nav a:hover {
  color: #38bdf8;
}

.hero {
  height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
}

.hero p {
  margin: 1rem 0;
}

button {
  padding: 0.7rem 1.5rem;
  border: none;
  background: #38bdf8;
  color: #020617;
  font-size: 1rem;
  cursor: pointer;
  border-radius: 5px;
}

section {
  padding: 4rem 2rem;
  text-align: center;
}

.cards {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.card {
  background: #020617;
  padding: 2rem;
  border-radius: 10px;
  width: 200px;
}

footer {
  background: #020617;
  padding: 1rem;
  text-align: center;
  font-size: 0.9rem;
}