* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Comic Sans MS", "Trebuchet MS", Arial, sans-serif;
  background: #eef1f5;
  color: #111;
}
button {
  font: inherit;
  font-size: 16px;
  padding: 10px 22px;
  border: 0;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
}
button.secondary { background: #059669; }
button:hover { filter: brightness(1.1); }

.nav {
  display: flex;
  gap: 4px;
  justify-content: center;
  padding: 10px 16px 0;
  background: #1e293b;
}
.nav a {
  padding: 10px 22px;
  color: #cbd5e1;
  text-decoration: none;
  border-radius: 8px 8px 0 0;
  font-size: 16px;
}
.nav a:hover { color: #fff; }
.nav a[aria-current="page"] { background: #eef1f5; color: #111; }

@media print {
  body { background: #fff; }
  .nav { display: none; }
}