/* media query */
.introMain-block {
  color: #7B9C97;
}

.introConcept {
  background: #7B9C97;
}

.introDetail {
  background: #7B9C97;
}

.introSection.--second .introMain-block {
  color: #7B9C97;
}
.introSection.--second .introConcept {
  background: #729A97;
}
.introSection.--second .introDetail {
  background: #729A97;
}