/* Rivage固有の配色と画像。構造は共通wiki.css。 */
:root{--hero-img:url("img/cover.webp")}
.main-welcome{background-image:linear-gradient(125deg,rgba(15,26,47,.50),rgba(17,24,42,.84)),var(--hero-img);background-position:center;background-size:cover}
.main-welcome h2{color:#bfe7ff}.content-body h2{border-left-color:#80c4ed}
.wiki-figure{margin:20px 0;text-align:center}.wiki-figure img{max-width:100%;height:auto;border-radius:10px}.wiki-figure figcaption{font-size:.85rem;color:#bacbdc;margin-top:6px}
.content-body pre{overflow-x:auto;background:#111e30;padding:16px;border-radius:10px;color:#e6f5ff}.content-body details{margin:14px 0;padding:12px 14px;background:rgba(119,185,237,.08);border-radius:10px}.content-body summary{cursor:pointer;color:#c4e7ff;font-weight:bold}