body {
  margin: 0;
  font-family: system-ui, Arial;
  background: #0b1220;
  color: #eaeaea;
}

header {
  position: sticky;
  top: 0;
  background: rgba(11,18,32,0.9);
  padding: 15px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

nav a {
  color: #aaa;
  margin: 0 10px;
  text-decoration: none;
}

nav a:hover { color: white; }

.hero {
  text-align: center;
  padding: 70px 20px;
  background: radial-gradient(circle at top, #1b2a4a, #0b1220);
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: #121c33;
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

.card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.card-content {
  padding: 15px;
}

.section-title {
  margin: 30px 0 15px;
}

footer {
  text-align: center;
  padding: 25px;
  color: #777;
}