/* 僅 extra 六六歌2 四入口單頁載入（見 site-guide 傳奇的轉折）；不寫入 assets/css/style.css */
body.totoga2-page nav.totoga2-split-crossnav.ebook-back-link {
    margin: 0.75rem auto 1.25rem;
    padding: 0.35rem 14px;
    width: 100%;
    max-width: 1200px;
    box-sizing: border-box;
    background: transparent;
    background-color: transparent;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}