body {
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: #fafafa;
  color: #333;
}

header {
  background: #003366;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}

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

main {
  max-width: 800px;
  margin: auto;
  padding: 1rem;
}

section {
  margin-bottom: 2rem;
  padding: 1rem;
  background: white;
  border-radius: 6px;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

h2 {
  border-left: 4px solid #003366;
  padding-left: 0.5rem;
  margin-bottom: 0.5rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #eee;
  font-size: 0.9rem;
}