.l-content {
  margin: 0;
  padding: 0;
}

/* /about/ 専用: テーマCSS干渉を最小化 */
.rt-about-page #content {
  margin-bottom: 0 !important;
}

#content.l-content.l-container,
.l-mainContent,
.l-mainContent__inner {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

#top_title_area,
#breadcrumb,
#sidebar {
  display: none;
}

#footer {
  display: block;
}

.rt-about-philosophy-page {
  margin: 0;
  padding: 0;
}

.rt-about-embed {
  margin: 0;
  padding: 0;
}

.rt-about-embed__title {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  border: 0;
  clip: rect(0 0 0 0);
}

.rt-about-embed__root {
  width: 100%;
  min-height: calc(100vh - 72px);
  overflow-x: clip;
  background: #fff;
  isolation: isolate;
  position: relative;
}

.rt-about-embed__frame {
  display: block;
  width: 100%;
  height: calc(100vh - 72px);
  min-height: calc(100vh - 72px);
  border: 0;
  background: #fff;
}

/* SWELLの見出し・本文系スタイルが埋め込みアプリへ入るのを防ぐ */
.rt-about-page .rt-about-embed__root h1,
.rt-about-page .rt-about-embed__root h2,
.rt-about-page .rt-about-embed__root h3,
.rt-about-page .rt-about-embed__root h4,
.rt-about-page .rt-about-embed__root h5,
.rt-about-page .rt-about-embed__root h6,
.rt-about-page .rt-about-embed__root p {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.rt-about-page .rt-about-embed__root a {
  color: inherit;
  text-decoration: inherit;
}

@media (max-width: 959px) {
  .rt-about-embed__root {
    min-height: calc(100vh - 64px);
  }
  .rt-about-embed__frame {
    height: calc(100vh - 64px);
    min-height: calc(100vh - 64px);
  }
}

.c-plainBtn {
  margin-left: 0;
  margin-right: auto;
}