/* サイト共通スタイル (Common Styles) */

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  color: #333;
  background-color: #fff;
}

/* ヘッダー・ロゴ */
.logo-container {
  text-align: center;
  margin-bottom: 24px;
}

.logo {
  width: 120px;
  height: auto;
  display: inline-block;
}

/* 見出し */
h1 {
  font-size: 1.75rem;
  border-bottom: 2px solid #ddd;
  padding-bottom: 8px;
  margin-bottom: 24px;
}

h2 {
  font-size: 1.35rem;
  border-bottom: 2px solid #ddd;
  padding-bottom: 8px;
  margin-top: 36px;
  margin-bottom: 16px;
}

h3 {
  font-size: 1.1rem;
  margin-top: 20px;
  margin-bottom: 8px;
}

/* セクション・本文 */
section {
  margin-bottom: 40px;
}

p {
  margin: 0 0 16px;
}

ul, ol {
  padding-left: 24px;
  margin: 0 0 16px;
}

li {
  margin-bottom: 6px;
}

/* リンク */
a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page-nav {
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.back-link {
  display: inline-block;
  margin: 24px 0 12px;
}

/* フッター */
footer {
  border-top: 1px solid #eee;
  padding-top: 24px;
  margin-top: 60px;
  text-align: center;
  font-size: 0.875rem;
  color: #666;
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-nav li {
  margin: 0;
}