body{
  margin:0;
  font-family: Inter, Arial, sans-serif;
  background:#0b1220;
  color:#e5e7eb;
}

header{
  padding:40px;
  background:linear-gradient(135deg,#111827,#0f172a);
  text-align:center;
}

h1{
  margin:0;
  font-size:42px;
}

p{
  color:#cbd5e1;
}

.container{
  max-width:1100px;
  margin:auto;
  padding:40px 20px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
}

.card{
  background:#111827;
  border:1px solid #1f2937;
  border-radius:16px;
  padding:20px;
  transition:0.2s;
}

.card:hover{
  transform:translateY(-5px);
  border-color:#3b82f6;
}

a{
  color:#60a5fa;
  text-decoration:none;
}

nav a{
  margin:0 10px;
  color:#93c5fd;
}