body{
  margin:0;
  font-family:Arial,system-ui,sans-serif;
  background:radial-gradient(circle at top,#1f2937 0,#020617 55%);
  color:#f9fafb;
  padding:20px;
}
.nav{
  display:flex;
  gap:14px;
  margin-bottom:18px;
}
.nav a{
  color:#22d3ee;
  text-decoration:none;
  font-size:14px;
}
.nav a:hover{text-decoration:underline;}
.card{
  padding:20px;
  background:rgba(15,23,42,.9);
  border-radius:14px;
  margin:10px 0;
  border:1px solid rgba(148,163,184,.5);
}
h1{margin-top:0;}
img{max-width:100%;border-radius:12px;display:block;margin-top:10px;}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:12px;
}
.tile{
  padding:14px;
  background:rgba(15,23,42,.9);
  border-radius:12px;
  border:1px solid rgba(148,163,184,.4);
}
.small{font-size:13px;color:#9ca3af;}