body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: #0b0f19;
  color: #fff;
}

a { text-decoration: none; }

.navbar {
  display: flex;
  justify-content: space-between;
  padding: 20px 5%;
  background: rgba(0,0,0,0.6);
  position: sticky;
  top: 0;
}

.logo {
  font-size: 20px;
  font-weight: 700;
}

.nav-links a {
  margin-left: 20px;
  color: #aaa;
}

.nav-links a:hover {
  color: #4facfe;
}

.btn {
  background: linear-gradient(90deg,#4facfe,#00f2fe);
  padding: 10px 20px;
  border-radius: 6px;
  color: #000;
  font-weight: 600;
}

.section {
  padding: 80px 5%;
  text-align: center;
}

.hero {
  padding: 120px 20px;
  text-align: center;
  background: radial-gradient(circle at top,#1a2238,#0b0f19);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  gap: 20px;
  margin-top: 40px;
}

.card {
  padding: 20px;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

footer {
  padding: 40px;
  text-align: center;
  color: #aaa;
}