/* スライドショーの外枠（幅100%） */
.viewer-container {
  position: relative;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
}

/* コメント（中央に固定表示） */
#htxtm {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 200;
  text-align: center;
}

#htxtm img {
  max-width: 100%;
  height: auto;
}

/* スライドショー本体 */
.viewer {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  background: #fff;
}

.viewer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  height: 100%;
}

.viewer ul li {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  z-index: 99;
}

.viewer ul li img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}



/* モバイル対応 */
@media screen and (max-width: 768px) {
  .nav-menu {
    display: none;
    flex-direction: column;
    background-color: #005bac;
    width: 100%;
    padding: 10px 0;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu ul {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }

  .viewer {
    height: 300px;
  }

#htxtm {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 200;
  text-align: center;
}

}