/* --------------------------------------------- */
/* ▼モバイルファースト (全環境に共通のデザイン) */
/* --------------------------------------------- */
img {
  width: 100%;
  height: auto;
}
main {
  overflow: hidden;
}
#history {
  margin-top: -55px;
  padding-top: 55px;
  z-index: -1;
}
.about_bg {
  padding: 2em 0;
  position: relative;
  background: #F2F5F7;
}
.about_wrap {
  width: 90%;
  margin: auto;
  text-align: left;
}
.about_img {}
.about_img h2 {
  font-weight: 700;
  font-size: 1.6rem;
  margin: 0 auto 0.8em;
}
.about_img h2 span {
  display: block;
  font-size: 2rem;
  color: #0071BB;
}
.about_txt {
  margin: 1em auto 0;
}
.about_txt h2 {
  display: none;
}
.about_bikeimg {
  width: 95%;
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 1em auto 0em;
  justify-content: center;
}
.about_bikeimg li {
  margin: 0.5em 8px 0em;
  width: calc(100% / 2 - 16px);
}
.history_bg {
  width: 90%;
  margin: auto;
  position: relative;
}
.history_bg::before, .history_bg::after {
  position: absolute;
  z-index: 3;
  top: -15px;
  content: '';
  background: #F2F5F7;
  width: 30px;
  height: 30px;
}
.history_bg::before {
  transform: rotate(45deg);
  left: -15px;
  border-right: 0.5px solid #000;
}
.history_bg::after {
  transform: rotate(-45deg);
  right: -15px;
  border-left: 0.5px solid #000;
}
.history_wrap {
  background: #fff;
  margin: 4em auto 0;
  box-sizing: border-box;
  padding: 30px 20px 30px;
  position: relative;
}
.history_wrap::before, .history_wrap::after {
  position: absolute;
  z-index: 3;
  bottom: -15px;
  content: '';
  background: #F2F5F7;
  width: 30px;
  height: 30px;
}
.history_wrap::before {
  transform: rotate(45deg);
  left: -15px;
  border-top: 0.5px solid #000;
}
.history_wrap::after {
  transform: rotate(-45deg);
  right: -15px;
  border-top: 0.5px solid #000;
}
.history_en {
  position: absolute;
  z-index: 2;
  top: -0.8em;
  left: 50%;
  transform: translate(-50%, 0%);
  color: #0071BB;
  font-weight: bold;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 2px;
  font-size: 1.6rem;
}
.history_wrap h2 {
  font-weight: bold;
  font-size: 1.6rem;
}
.history_wrap h2 span {
  color: #0071BB;
}
.history_wrap h2 span:last-child {
  color: #01AD6E;
}
.history {
  margin: 1em auto 0;
  text-align: left;
}
.history img {}
.history p {
  margin: 1em auto 0;
}
.history p span {
  display: block;
  font-weight: bold;
  margin: 0 auto 0.5em;
  position: relative;
  padding: 0 0 0 10px;
  font-size: 1.5rem;
}
.history p span::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  content: '';
  background: #0071BB;
}
.history_list {}
.history_list > li {
  margin: 2.5em auto 0;
}
.history_list > li h3 {
  font-weight: bold;
  font-size: 1.5rem;
  border-bottom: 1px solid #000;
  padding: 0 0 0.5em;
}
.history_list > li ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0em auto 0em;
  justify-content: space-between;
}
.history_list > li ul li {
  position: relative;
  margin: 1em 5px 0em;
  width: calc(100% / 2 - 10px);
}
.history_list > li ul li p {
  margin: 0.5em auto 0;
  text-align: left;
  font-size: 1.2rem;
  padding: 0 20px 0 0;
}
.history_list > li ul li::before {
  position: absolute;
  content: '';
  bottom: 3px;
  right: 0;
  display: block;
  width: 15px;
  height: 15px;
  background-image: url("/img/about/arrow.webp");
  background-size: contain;
  background-repeat: no-repeat;
  transition: ease .2s;
}
.history_list > li ul li:hover::before {
  right: -5px;
}
/* ------------------------------------ */
/* ▼PC用デザインとして付け足すデザイン */
/* ------------------------------------ */
@media all and (min-width: 768px) {
  #history {
    margin-top: -75px;
    padding-top: 75px;
    z-index: -1;
  }
  .about_bg {
    padding: 4em 0;
  }
  .about_wrap {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0em auto 0em;
    justify-content: space-between;
    align-items: center;
  }
  .about_img {
    width: 50%;
  }
  .about_img h2 {
    display: none;
  }
  .about_txt {
    width: 50%;
    box-sizing: border-box;
    margin: 0;
    padding: 0 10% 0 5%;
  }
  .about_txt h2 {
    display: block;
    font-weight: 700;
    font-size: 2.3rem;
    margin: 0 auto 0.8em;
  }
  .about_txt h2 span {
    display: block;
    font-size: 3rem;
    color: #0071BB;
  }
  .about_bikeimg {
    width: 90%;
    max-width: 1100px;
    margin: 4em auto 0em;
  }
  .about_bikeimg li {
    margin: 0em 12px 0em;
    width: calc(100% / 3 - 24px);
  }
  .history_bg {
    width: 90%;
    max-width: 1200px;
  }
  .history_wrap {
    margin: 6em auto 0;
    padding: 50px 50px 50px;
  }
  .history_en {
    top: -0.8em;
    font-size: 2rem;
  }
  .history_wrap h2 {
    position: relative;
    display: inline-block;
    font-size: 2.8rem;
  }
  .history_wrap h2::before, .history_wrap h2::after {
    position: absolute;
    content: '';
    top: 17px;
    display: block;
    width: 269px;
    height: 18px;
    background-image: url("/img/about/line.webp");
    background-size: contain;
    background-repeat: no-repeat;
  }
  .history_wrap h2::before {
    left: calc(50% - 510px);
  }
  .history_wrap h2::after {
    right: calc(50% - 510px);
    transform: scale(-1, -1);
  }
  .history {
    margin: 2em auto 0;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: space-between;
  }
  .history img {
    width: 45%;
  }
  .history p {
    margin: 0;
    width: 50%;
    line-height: 2;
  }
  .history p span {
    line-height: 1.5;
    margin: 0 auto 1em;
    padding: 0 0 0 20px;
    font-size: 2.5rem;
  }
  .history p span::before {
    width: 5px;
  }
  .history_list {}
  .history_list > li {
    margin: 4em auto 0;
  }
  .history_list > li h3 {
    font-size: 2.5rem;
    padding: 0 0 0.3em;
  }
  .history_list > li ul li {
    margin: 1.5em 15px 0em;
    width: calc(100% / 3 - 30px);
  }
  .history_list > li ul li p {
    margin: 0.5em auto 0;
    text-align: center;
    font-size: 1.6rem;
    padding: 0;
  }
  .history_list > li ul li::before {
    bottom: 5px;
    width: 20px;
    height: 20px;
  }
}