/*---------------------------------------------
    common
---------------------------------------------*/
#header {
  margin-bottom: 0;
}

#mv {
  align-items: center;
  display: flex;
  height: 400px;
  justify-content: center;
  width: 100%;
}
@media screen and (max-width: 820px) {
  #mv {
    height: 240px;
    margin: 0 auto;
    width: 80%;
  }
}
#mv .main-ttl {
  display: inline-block;
  font-size: 3.6rem;
  line-height: 1.4;
  padding: 0.25em 2em 0.2em;
  position: relative;
  top: 0;
}
@media screen and (max-width: 820px) {
  #mv .main-ttl {
    font-size: 2.6rem;
    padding: 0.25em 1em 0.2em;
    text-align: center;
  }
}
#mv .main-ttl::before, #mv .main-ttl::after {
  content: "";
  display: inline-block;
  height: 100%;
  position: absolute;
  top: 0;
  width: 8px;
}
#mv .main-ttl::before {
  border-bottom: solid 3px #ea7f00;
  border-left: solid 3px #ea7f00;
  border-top: solid 3px #ea7f00;
  left: 0;
}
#mv .main-ttl::after {
  border-bottom: solid 3px #ea7f00;
  border-right: solid 3px #ea7f00;
  border-top: solid 3px #ea7f00;
  right: 0;
}

.section-ttl {
  padding-bottom: 10px;
  position: relative;
}
.section-ttl::after {
  background: #ea7f00;
  border-radius: 2px;
  bottom: 0;
  content: "";
  display: block;
  height: 3px;
  left: 0;
  line-height: 1.6;
  margin: 0 auto;
  position: absolute;
  right: 0;
  width: 40px;
}

#main {
  background: #fff;
  border-radius: 20px;
  margin: 0 auto;
  max-width: 1480px;
  padding: 80px 40px;
  width: 90%;
}
@media screen and (max-width: 820px) {
  #main {
    padding: 40px 20px;
  }
}

/*---------------------------------------------
    about
---------------------------------------------*/
.about {
  margin: 0 auto 80px;
  max-width: 1480px;
  width: 100%;
}
.about .inner .txt {
  margin-bottom: 1em;
  text-align: center;
}
@media screen and (max-width: 820px) {
  .about .inner .txt {
    text-align: left;
  }
}

/*---------------------------------------------
    desk
---------------------------------------------*/
.desk .txt {
  border: #ea7f00 solid 1px;
  margin: 0 auto;
  max-width: 650px;
  padding: 56px 40px;
  width: 90%;
}
@media screen and (max-width: 820px) {
  .desk .txt {
    padding: 24px 20px;
    width: 100%;
  }
}