body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0b0b0d;
  color: white;
}

.nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid #222;
}

.nav a {
  color: #aaa;
  margin-left: 20px;
  text-decoration: none;
  font-size: 14px;
}

.logo {
  font-weight: bold;
  letter-spacing: 1px;
}

.hero {
  padding: 120px 40px;
  text-align: center;
}

.hero h1 {
  font-size: 56px;
}

.hero p {
  color: #aaa;
  max-width: 600px;
  margin: 20px auto;
}

.cta {
  margin-top: 30px;
}

.btn {
  padding: 12px 20px;
  border: 1px solid white;
  color: white;
  text-decoration: none;
  margin: 5px;
  display: inline-block;
}

.primary {
  background: white;
  color: black;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 60px 40px;
}

.card {
  border: 1px solid #222;
  padding: 20px;
}

.page {
  padding: 80px 40px;
}

.muted {
  color: #aaa;
}

.diagram {
  border: 1px solid #222;
  padding: 20px;
  margin-top: 20px;
}

.list {
  color: #aaa;
  line-height: 2;
}