.atwiki-contents h4, .atwiki-sp-contents h4 {
  font-size: 20px;
}

.top__message {
  background: #000;
  color: #fff;
  padding: 50px 0;
  text-align: center;
}

.top__message {
  color: #fff;
}

.plugin-openclose-contents {
  background: #fafafa;
  margin-top: 10px !important;
  padding: 10px !important;
  border: 0px !important;
}

/* 大型アップデートのカウントダウン */
.update-countdown {
  box-sizing: border-box;
  margin: 18px auto;
  padding: 16px 12px;
  border-top: 3px solid #a68b58;
  border-bottom: 3px solid #a68b58;
  background: #f7f1e5;
  color: #782f32;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "MS PMincho", serif;
  font-size: clamp(17px, 2.3vw, 24px);
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: .04em;
  text-align: center;
}