:root { --blue:#89cff0; }
* { box-sizing: border-box; }

body {
  font-family: Arial, Helvetica, sans-serif;
  background:#fefefe;
  margin:0;
  text-align:center;
}
header { background:var(--blue); padding:20px; }
header h1 { margin:0; color:#333; }

.controls { padding:16px 20px 0; }
button {
  background: var(--blue);
  border: none;
  padding: 10px 16px;
  font-size: 16px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 6px 14px rgba(0,0,0,.08);
}
button:hover { filter: brightness(0.95); }

.gallery {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 18px;
  padding: 20px;
  max-width: 1000px;
  margin: 0 auto 40px;
}
.fact-card {
  background:#fff;
  padding:20px;
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(0,0,0,.12);
  text-align:left;
  font-size:16px;
  transition: transform .18s ease;
}
.fact-card:hover{ transform: scale(1.03); }