* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #0e0e0e;
  color: #e6e6e6;
  line-height: 1.6;
}

a {
  color: #e6e6e6;
  text-decoration: none;
  border-bottom: 1px solid #444;
}

a:hover {
  border-bottom-color: #aaa;
}

header, footer {
  padding: 2rem;
  text-align: center;
}

nav a {
  margin: 0 1rem;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

main {
  max-width: 900px;
  margin: 4rem auto;
  padding: 0 2rem;
}

h1, h2 {
  font-weight: 300;
  letter-spacing: 0.05em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  padding: 2rem;
  border: 1px solid #222;
  text-al