/* common.css */
body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  color: #444;
  overflow-x: hidden;
}

header {
  padding: 2rem;
  text-align: center;
  background: linear-gradient(90deg, #ffe0f0, #e0f7fa);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin: 0;
  color: #ff69b4;
}

nav {
  margin-top: 1rem;
}

nav a {
  margin: 0 1rem;
  text-decoration: none;
  color: #666;
  font-weight: bold;
  transition: color 0.3s, transform 0.2s;
}

nav a:hover {
  color: #ff69b4;
  transform: scale(1.1);
}

main {
  padding: 2rem;
  max-width: 960px;
  margin: auto;
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #999;
}

h2 {
  text-align: center;
  color: #ff69b4;
  font-size: 2rem;
  margin-bottom: 1rem;
}

p {
  line-height: 1.8;
  font-size: 1.1rem;
  text-align: center;
}