@media screen and (min-width: 768px) {
  .sp {
    display: none;
  }
}

@media screen and (max-width: 767px) {
  .pc {
    display: none;
  }
}

body {
  background-color: #212020;
}
@media screen and (min-width: 768px) {
  main {
    margin: 0;
  }
}
@media screen and (max-width: 767px) {
  main {
    margin: 0;
  }
}
@media screen and (min-width: 768px) {
  main .c_read div.main div.image picture img {
    min-width: 545px;
  }
}
main .c_read div.main div.text p {
  line-height: 1.8;
  color: #fff;
}
@media screen and (min-width: 768px) {
  main .c_read div.main div.text p {
    font-size: 18px;
  }
}
@media screen and (min-width: 768px) {
  section.case {
    padding-top: 50px;
  }
}
@media screen and (max-width: 767px) {
  section.case {
    padding-top: 13.3333333333vw;
  }
}
section.case div.title.c_tit1:before {
  content: "CASE";
  color: rgba(33, 32, 32, 0.15);
}
@media screen and (min-width: 768px) {
  section.user {
    margin-top: 150px;
  }
}
@media screen and (max-width: 767px) {
  section.user {
    margin-top: 20vw;
    padding-bottom: 20vw;
  }
}
section.user div.title.c_tit1:before {
  content: "USER";
  color: rgba(33, 32, 32, 0.15);
}
@media screen and (min-width: 768px) {
  section.construction {
    margin-top: 150px;
  }
}
@media screen and (max-width: 767px) {
  section.construction {
    margin-top: 13.3333333333vw;
  }
}

@media screen and (max-width: 767px) {
  section.equipment {
    margin-top: -6.6666666667vw;
  }
}
@media screen and (max-width: 767px) {
  section.equipment ul {
    margin-top: 5.3333333333vw;
  }
}