*, *::before, *::after { box-sizing: border-box; }

.page-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  gap: 16px;
  text-align: center;
}

.page-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
}

.page-content p {
  font-size: 1rem;
  color: #555;
  max-width: 480px;
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  background: #222;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
}
.btn:hover { background: #444; }