body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f8fafc;
  color: #222;
  margin: 0;
  padding: 0;
}
main {
  max-width: 800px;
  margin: 40px auto;
  background: #fff;
  padding: 32px 24px;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}
h1 {
  font-size: 2.2rem;
  margin-bottom: 1.2rem;
  color: #1a365d;
}
h2 {
  font-size: 1.4rem;
  margin-top: 2.2rem;
  margin-bottom: 0.8rem;
  color: #2563eb;
}
h3 {
  font-size: 1.1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #0e7490;
}
p {
  line-height: 1.7;
  margin-bottom: 1.1rem;
}
.button-row {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
}
.button-row button {
  padding: 0.7em 2em;
  font-size: 1rem;
  border: none;
  border-radius: 6px;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}
.button-row button:hover {
  background: #1a365d;
}
@media (max-width: 600px) {
  main {
    padding: 12px 4vw;
  }
  h1 {
    font-size: 1.3rem;
  }
  h2 {
    font-size: 1.1rem;
  }
  h3 {
    font-size: 1rem;
  }
}