body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  color: #222;
  background: #f7f9fc;
}

header {
  background: #0b3a6f;
  color: #fff;
  padding: 48px 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 40px;
}

header p {
  margin: 8px 0 0;
  font-size: 16px;
  opacity: 0.9;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

section {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

h2 {
  margin-top: 0;
  font-size: 28px;
  color: #0b3a6f;
}