*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background: #0e0e0e;
  color: #ccc;
  font-family: monospace;
  padding: 2rem;
}
header {
  max-width: 700px;
  margin: 0 auto 2.5rem;
}
header h1 {
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}
header p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: #888;
}
.grid {
  columns: 4 240px;
  gap: 6px;
}
.grid a {
  display: block;
  margin-bottom: 6px;
  break-inside: avoid;
}
.grid img {
  width: 100%;
  display: block;
  border-radius: 4px;
  transition: opacity 0.2s ease;
}
.grid a:hover img {
  opacity: 0.75;
}
footer {
  margin-top: 3rem;
  font-size: 0.75rem;
  color: #555;
  text-align: center;
  line-height: 1.8;
}