body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f3f4f6;
  color: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.container {
  padding: 24px;
  max-width: 640px;
  width: calc(100% - 32px);
  background: #ffffff;
  border: 1px solid #d1d5db;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

h1 {
  margin: 0 0 12px;
  font-size: 2rem;
}

p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
}