:root {
  --bg-color: #ffffff;
  --text-main: #333333;
  --text-muted: #666666;
  --accent-blue: #4285f4;
  --accent-yellow: #fbbc05;
  --border-color: #e0e0e0;
  --container-max: 800px;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  line-height: 1.8;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 1.5rem;
  margin: 0;
  text-align: center;
}

h2 {
  font-size: 1.25rem;
  border-left: 4px solid var(--accent-blue);
  padding-left: 1rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

p, ul {
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.5rem;
}

.price-card {
  background: #f8f9fa;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price-value {
  font-weight: bold;
  font-size: 1.2rem;
  color: var(--accent-blue);
}

.note {
  font-size: 0.9rem;
  background: #fff9e6;
  padding: 1rem;
  border-left: 4px solid var(--accent-yellow);
  margin: 1.5rem 0;
}

footer {
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-main);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  header {
    padding: 1rem 1rem;
  }
  header h1 {
    font-size: 1.2rem;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
  }
  header h1 img {
    height: 28px !important;
  }
  h2 {
    font-size: 1.1rem;
  }
}