#mokuji,
#mokuji-cat {
  width: 100%;
  margin: 30px auto 60px;
  counter-reset: counter;
}

div.mokuji-ttl {
  display: block;
  position: relative;
  cursor: pointer;
  margin: 0;
  font-size: 16px;
  color: #333;
  font-weight: bold;
  text-align: center;
  border: 1px solid #cccccc;
  padding: 10px 10px 10px 42px;
  background: #fafafa;
}

#mokuji-btn {
  position: absolute;
  top: 50%;
  left: 10px;
  transform: translateY(-50%);
  width: 24px;
  aspect-ratio: 1 / 1;
  background: url(toggle-plus.png) center center / contain no-repeat;
}

#mokuji-btn.action {
  background: url(toggle-minus.png) center center / contain no-repeat;
}

#mokuji ul {
  display: none;
  padding: 12px;
  border: 1px solid #cccccc;
  border-top: none;
}

#mokuji ul li {
  list-style: none;
  position: relative;
  font-size: 13px;
  line-height: 1.4;
  margin-bottom: 3px;
  color: #333;
}

#mokuji li a,
#mokuji-cat li a {
  width: 100%;
  padding: 2px 0;
  display: block;
  width: fit-content;
  color: #DA460E;
  text-decoration: none;
  box-sizing: border-box;
  transition: all 0.3s ease 0s;
}

#mokuji .mokuji-h2,
#mokuji .mokuji-h3 {
  user-select: none;
}

#mokuji .mokuji-h2 {
  counter-reset: sub-counter;
  margin: 0;
  text-indent: 0;
  position: relative;
  padding-left: 16px;
  margin-bottom: 3px;
}


#mokuji .mokuji-h2:before {
  content: counter(counter) ". ";
  counter-increment: counter;
  position: absolute;
  top: 2px;
  left: 0;
}

#mokuji .mokuji-h3 {
  margin-left: 20px;
  margin-bottom: 3px;
  padding-left: 16px;
  text-indent: 0;
  position: relative;
}


#mokuji .mokuji-h3:before {
  position: absolute;
  top: 0;
  left: 0;
  counter-increment: sub-counter;
  /* content: counter(counter) "." counter(sub-counter); */
  content: counter(sub-counter, lower-alpha) ".";
  margin-right: 10px;
}