* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    color: #333; line-height: 1.6; background-color: #f9f9f9;
}
a { color: #e60012; text-decoration: none; transition: opacity 0.3s; }
a:hover { opacity: 0.7; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.inner { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header { background-color: #fff; box-shadow: 0 2px 5px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; justify-content: space-between; align-items: center; max-width: 1100px; margin: 0 auto; padding: 15px 20px; }
.logo a { font-size: 20px; font-weight: bold; color: #333; }
.gnav-list { display: flex; gap: 20px; }
.gnav-list a { color: #333; font-weight: bold; font-size: 14px; }
.gnav-list a:hover { color: #e60012; }

/* スマホメニュー */
.menu-toggle { display: none; background: none; border: none; cursor: pointer; width: 30px; height: 24px; position: relative; z-index: 101; }
.menu-toggle span { display: block; width: 100%; height: 3px; background-color: #333; position: absolute; left: 0; transition: all 0.3s; }
.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 10px; }
.menu-toggle span:nth-child(3) { bottom: 0; }

/* Footer */
.footer { background-color: #333; color: #fff; padding: 40px 0 20px; margin-top: 60px; }
.footer .inner { display: flex; justify-content: space-between; flex-wrap: wrap; margin-bottom: 20px; }
.footer-info p { margin-top: 10px; font-size: 14px; line-height: 1.8; }
.footer-nav li { margin-bottom: 10px; }
.footer-nav a { color: #fff; font-size: 14px; }
.copyright { text-align: center; font-size: 12px; border-top: 1px solid #555; padding-top: 20px; }

/* 下層ページ共通 */
.page-header { background-color: #e60012; color: #fff; padding: 60px 20px; text-align: center; margin-bottom: 40px; }
.page-title { font-size: 28px; }

/* レスポンシブ (スマホ対応) */
@media screen and (max-width: 768px) {
    .menu-toggle { display: block; }
    .gnav-list { display: none; position: absolute; top: 60px; left: 0; width: 100%; background-color: #fff; flex-direction: column; padding: 20px; box-shadow: 0 5px 5px rgba(0,0,0,0.1); gap: 15px; }
    .gnav-list.is-active { display: flex; }
    .footer .inner { flex-direction: column; gap: 30px; }
}