h1 {
  color: #ed9933;
  font-family: "Noto Serif JP", "ヒラギノ明朝 ProN", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ Ｐ明朝", "ＭＳ 明朝", "游明朝", YuMincho, serif;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 40px;
  text-align: center;
}

@media (max-width: 576px) {
  h1 {
    font-size: 26px;
  }
}

.column h1 {
  color: #000;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 40px;
  text-align: left;

}



.column h2 {
  border-bottom: solid 3px #cce4ff;
  font-size: 24px;
  padding: 10px 0px;
  font-weight: bold;
  position: relative;
  margin-bottom: 15px;
  text-align: left;
  color: #000;
}

.column h2 {

  border-image: linear-gradient(to right,
      #ed9933, #e6dbc9) 1 / 0 0 4px;
  border-style: solid;
  color: #212121;
  font-size: 24px;
  line-height: 34px;
  padding: 10px 3px;

}

.column h3 {
  font-size: 18px;
  margin-bottom: 15px;
  padding: 1rem 1.8rem;
  background: #f4f4f4;
  font-weight: bold;
  text-align: left;
  color: #000;
  border: none;
  position: inherit;
}

.column h4 {
  font-size: 22px;
  font-weight: bold;
  text-align: left;
  color: #000;
}

.column p {
  font-size: 16px;
  text-align: left;
  color: #000;
  margin-bottom: 15px;
}


.column ul {
  background: #efe9e0;
  border: 2px solid #e6dbc9;
  border-radius: 10px;
  list-style-type: disc;
  margin: 20px 0;
  padding: 15px 20px 20px 35px;
}

.column ul li {
  margin-top: 10px;
}




/* 目次 */


.column .toc {
  width: 100%;
  display: table;
  margin: 0 0 10px;
  padding: 10px 15px;
  color: #333;
  word-break: break-all;
  word-wrap: break-word;
  border: #ccc solid 1px;
  border-radius: 3px;
  background-color: #fafafa;
}

.column .toc .toc-title {
  margin: 0;
  padding: 0;
  text-align: center;
  font-weight: bold;
}

.column .toc .toc-toggle {
  font-weight: normal;
  font-size: 80%;
}

.column .toc ul {
  list-style: none;
  border: none;
  background: #fafafa;
  box-shadow: none;
  margin: 0px;
  padding: 0px;
}

.column .toc .toc-list {
  margin: 0;
  padding: 0;
}

.column .toc .toc-list .other-page a {
  color: gray;
}


.author-box {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  height: auto;
  background-color: #efefef;
  padding: 30px;
  margin-bottom: 30px;
}


.proficon {
  width: 20%;
  padding: 30px 15px;
}

.profinfo {
  width: 80%;
  padding: 15px;
}

.profinfo .proftitle {
  background-color: #333;
  display: inline-block;
  padding: 2px 15px;
  font-size: 12px;
  color: #fff;
}

.profinfo .profname {
  font-size: 17px;
  font-weight: bold;
  margin-bottom: 5px;
}

.profinfo .profname span {
  font-size: 14px;
  font-weight: normal;
}

.profinfo .profdesc {
  font-size: 13px;
  line-height: 170%;
}

.prof {
  border-radius: 100%;
  overflow: hidden;
}

.profimage {
  width: 100%;
  height: auto;
}

.profcontact {
  color: #347bcb;
}

.ctaimg {
  margin-top: 15px;
  margin-bottom: 30px;
}

@media only screen and (max-width: 768px) {




  .author-box {
    padding: 10px;
  }




}


/* ------youtubeを16:9でレスポンシブに対応する------ */
.youtube {
  padding-bottom:30px;
  width: 100%;
  aspect-ratio: 16 / 9;
}
.youtube iframe {
  width: 100%;
  height: 100%;
}