/* 共通ベース設定 */
body { margin: 0; padding: 0; font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Meiryo", sans-serif; color: #333; line-height: 1.8; background-color: #f8f9fa; }
.body-cont { max-width: 1200px; margin: auto; }
#container { max-width: 1000px; margin: auto; padding: 40px; background-color: #ffffff; box-shadow: 0 0 20px rgba(0,0,0,0.05); }
a { text-decoration: none; transition: 0.3s; color: #333; }
a:hover { text-decoration: underline; }

/* 共通ヘッダー */
#header-top { display: flex; justify-content: space-between; align-items: flex-end; border-bottom: 3px solid #0000cc; margin-bottom: 30px; padding-bottom: 10px; }
.header-logo img { width: 200px; height: auto; display: block; }
.nav-area { display: flex; justify-content: flex-end; gap: 20px; font-weight: bold; }

/* 共通タイトル・テーブル */
.section-title { font-size: 26px; color: #0000cc; margin: 30px 0; text-align: center; font-weight: bold; }
.gaiyou-table { width: 100%; border-collapse: collapse; margin-top: 20px; border-top: 2px solid #0000cc; }
.gaiyou-table th, .gaiyou-table td { padding: 15px; border-bottom: 1px solid #eee; text-align: left; }
.gaiyou-table th { width: 25%; background-color: #f9fbff; color: #0000cc; white-space: nowrap; }

/* 共通フッター */
footer { margin-top: 60px; padding-top: 30px; border-top: 1px solid #eee; text-align: center; color: #777; }
.footer-nav { margin-bottom: 20px; font-size: 14px; }
.size-S { font-size: 13px; }

/* モバイル対応 */
@media screen and (max-width: 768px) {
    #container { padding: 20px; }
    .header-logo img { width: 120px; }
    .gaiyou-table th { width: 30%; font-size: 14px; }
    .gaiyou-table td { font-size: 14px; }
}