main#business {
  background: url(../img/business/bg-mv.png) no-repeat center top 0/100% auto;
}

@media screen and (max-width: 600px) {
  main#business {
    background: url(../img/business/sp/bg-mv.png) no-repeat center top 0/100% auto;
  }
}
/* ------------------------------------- */
/* mv
/* ------------------------------------- */
.mv {
  padding-top: 105px;
}

/* ------------------------------------- */
/* business
/* ------------------------------------- */
.business {
  padding-top: 100px;
  padding-bottom: 120px;
}
.business-title .main {
  background-image: none;
  color: #fff;
  -webkit-background-clip: initial;
  -webkit-text-fill-color: initial;
}
.business-title .sub {
  color: #fff;
}
.business .inner {
  max-width: 1170px;
}
.business-tab {
  margin-top: 80px;
  display: flex;
  align-items: center;
}
.business-tab-item {
  width: 33.33%;
  background-color: #bfd4f3;
  color: #fff;
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 15px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.business-tab-item:nth-child(2) {
  border-right: solid 1px #fff;
  border-left: solid 1px #fff;
}
.business-tab-item:before {
  content: "";
  display: block;
  width: 50px;
  height: 50px;
  background-position: center;
  background-size: 50%;
  background-repeat: no-repeat;
  background-color: #ccc;
  border-radius: 50%;
  margin-right: 20px;
}
.business-tab-item[data-id=energy]:before {
  background-image: url(../img/business/fire_wt.svg);
}
.business-tab-item[data-id=water]:before {
  background-image: url(../img/business/drop_wt.svg);
}
.business-tab-item[data-id=plant]:before {
  background-image: url(../img/business/power-plant_wt.svg);
}
.business-tab-item.is-active {
  background-color: #0053d1;
}
.business-tab-item.is-active:before {
  background: #fff;
  background-position: center;
  background-size: 50%;
  background-repeat: no-repeat;
}
.business-tab-item.is-active[data-id=energy]:before {
  background-image: url(../img/business/fire.svg);
}
.business-tab-item.is-active[data-id=water]:before {
  background-image: url(../img/business/drop.svg);
}
.business-tab-item.is-active[data-id=plant]:before {
  background-image: url(../img/business/power-plant.svg);
}
.business-wrapper {
  display: none;
}
.business-wrapper.is-active {
  display: block;
}
.business-list {
  display: flex;
  margin-top: 47px;
  flex-wrap: wrap;
  -moz-column-gap: 30px;
       column-gap: 30px;
  row-gap: 80px;
}
.business-item {
  width: calc(33.33% - 20px);
  min-height: 520px;
  box-shadow: 0px 20px 24px 0 rgba(63, 63, 63, 0.11);
}
.business-item a {
  display: flex;
  flex-direction: column;
  height: 100%;
}
@media (hover: hover) and (pointer: fine) {
  .business-item a:hover .business-info .business-info-link::after {
    right: 0;
    opacity: 0;
    transition: all 0.3s;
  }
}
.business-item figure {
  position: relative;
}
.business-item figure img {
  aspect-ratio: 370 / 245;
  object-fit: cover;
}
.business-item figure .icon {
  position: absolute;
  width: auto;
  height: 80px;
  bottom: -40px;
  right: 20px;
}
.business-info {
  display: flex;
  flex-direction: column;
  flex-grow: 2;
  padding: 33px 24px 42px;
}
.business-info-label {
  font-family: oswald, sans-serif;
  letter-spacing: 0.7px;
  color: #0053d1;
}
.business-info-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.9px;
  margin-top: 13px;
}
.business-info-title .small {
  font-size: 1rem;
  font-weight: 700;
}
.business-info-text {
  letter-spacing: 0.7px;
  line-height: 1.8;
  margin-top: 10px;
  flex-grow: 2;
  text-align: justify;
}
.business-info-link {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1.6px;
  color: #0053d1;
  text-align: right;
  padding-right: 85px;
  margin-top: 32px;
  position: relative;
}
.business-info-link::before, .business-info-link::after {
  position: absolute;
  content: "";
  width: 40px;
  top: 50%;
  transform: translateY(-50%);
}
.business-info-link::before {
  height: 40px;
  right: 10px;
  background-color: #bfd4f3;
  border-radius: 50px;
}
.business-info-link::after {
  height: 1px;
  right: 28px;
  background-color: #0053d1;
  transition: all 0.3s;
}

@media screen and (max-width: 600px) {
  .business {
    margin-top: 105px;
    padding-bottom: 86px;
  }
  .business .inner {
    max-width: 100%;
  }
  .business-tab {
    margin-top: 34px;
    border-bottom: solid 2px #bfd4f3;
  }
  .business-tab-item {
    background-color: #fff;
    position: relative;
    padding: 10px 0;
  }
  .business-tab-item:nth-child(2) {
    border-right: solid 1px #bfd4f3;
    border-left: solid 1px #bfd4f3;
  }
  .business-tab-item:before {
    margin-right: 0;
    width: 35px;
    height: 35px;
  }
  .business-tab-item.is-active {
    background-color: #bfd4f3;
  }
  .business-wrapper {
    padding: 50px 20px 0;
    background-color: #fff;
  }
  .business-heading {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.9px;
    padding-bottom: 7px;
    border-bottom: solid 2px #bfd4f3;
    color: #0053d1;
    background-color: #fff;
  }
  .business-list {
    margin-top: 0;
    background-color: #fff;
    flex-direction: column;
    padding: 36px 0 0;
    row-gap: 50px;
  }
  .business-item {
    width: 100%;
    min-height: initial;
  }
  .business-info-label {
    font-size: 1.2rem;
  }
  .business-info-title {
    font-size: 1.6rem;
  }
  .business-info-text {
    font-size: 1.2rem;
  }
  .business-info-link {
    font-size: 1.4rem;
    letter-spacing: 1.4px;
  }
}
/* ------------------------------------- */
/* technology
/* ------------------------------------- */
.technology {
  padding-top: 120px;
  background-color: #fff;
}
.technology-wrapper {
  display: flex;
  justify-content: space-between;
  margin-top: 75px;
}
.technology .article {
  width: 70%;
  padding: 0 70px 90px 135px;
}
.technology .article-wrapper {
  display: none;
}
.technology .article-wrapper.is-active {
  display: block;
}
.technology .article-list {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.technology .article-item {
  width: calc(33.33% - 18.6666666667px);
  max-width: 250px;
}
.technology .article-item figcaption {
  font-weight: 700;
  letter-spacing: 1.4px;
  line-height: 1.8;
  margin-top: 10px;
}
.technology .aside {
  width: 435px;
  border-left: solid 1px #bfd4f3;
  padding: 0 30px 90px;
}
.technology .aside-title {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  margin-bottom: 54px;
}
.technology .aside-list {
  margin: 54px 0;
  display: flex;
  flex-direction: column;
  row-gap: 45px;
}
.technology .aside .category-heading {
  font-weight: 700;
  letter-spacing: 0.7px;
}
.technology .aside .category-list {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  row-gap: 10px;
  -moz-column-gap: 14px;
       column-gap: 14px;
}
.technology .aside .category-item {
  width: calc(50% - 7px);
}
.technology .aside .category-item a {
  display: inline-block;
  text-align: center;
  width: 100%;
  border: solid 2px #bfd4f3;
  padding: 13px 0;
  border-radius: 22px;
  color: #0053d1;
  font-weight: 700;
  letter-spacing: 0.7px;
  transition: all 0.3s;
}
.technology .aside .category-item a:hover {
  background-color: #bfd4f3;
  transition: all 0.3s;
}
.technology .aside .category-item.is-active a {
  background-color: #0053d1;
  border: solid 2px #0053d1;
  color: #fff;
}
.technology .link-button a {
  padding: 20px 0;
  letter-spacing: 0.8px;
}

@media screen and (max-width: 600px) {
  .technology {
    padding: 65px 0 80px;
  }
  .technology-wrapper {
    flex-direction: column-reverse;
    margin-top: 30px;
  }
  .technology .article {
    width: 100%;
    margin-top: 33px;
    padding: 0 20px;
  }
  .technology .article-heading {
    font-weight: 700;
    color: #0053d1;
    letter-spacing: 0.7px;
    padding-bottom: 5px;
    border-bottom: solid 2px #bfd4f3;
  }
  .technology .article-list {
    -moz-column-gap: 15px;
         column-gap: 15px;
    row-gap: 25px;
    margin: 24px 0 37px;
  }
  .technology .article-list figcaption {
    font-size: 1.2rem;
    letter-spacing: 1.2px;
    line-height: 1.18;
  }
  .technology .article-item {
    width: calc(50% - 7.5px);
  }
  .technology .aside {
    width: 100%;
    border-left: none;
    padding: 0 20px;
  }
  .technology .aside-title {
    font-size: 2.2rem;
    letter-spacing: 1.1px;
    margin-bottom: 30px;
    text-align: center;
  }
  .technology .aside-heading {
    background-color: #0053d1;
    text-align: center;
    color: #fff;
    padding: 22px 0;
    font-size: 1.6rem;
    font-weight: 700;
    position: relative;
  }
  .technology .aside-heading::before, .technology .aside-heading::after {
    position: absolute;
    content: "";
    width: 17px;
    height: 5px;
    top: 50%;
    right: 20px;
    background-color: #fff;
  }
  .technology .aside-heading::before {
    transform: translateY(-50%);
  }
  .technology .aside-heading::after {
    transform: translateY(-50%) rotate(90deg);
    transition: all 0.3s;
  }
  .technology .aside-heading.is-open::after {
    transform: translateY(-50%) rotate(180deg);
    transition: all 0.3s;
  }
  .technology .aside-list {
    margin: 0;
    padding: 30px 20px;
    background-color: rgba(0, 83, 209, 0.08);
    display: none;
  }
  .technology .aside-item:not(:first-child) {
    margin-top: 30px;
  }
  .technology .aside .category-list {
    margin-top: 14px;
    row-gap: 7px;
    -moz-column-gap: 4px;
         column-gap: 4px;
  }
  .technology .aside .category-item {
    width: calc(33.33% - 2.6666666667px);
  }
  .technology .aside .category-item a {
    font-size: 1.2rem;
    background-color: #fff;
  }
  .technology .aside .category-item.plant {
    width: -webkit-max-content;
    width: -moz-max-content;
    width: max-content;
  }
  .technology .aside .category-item.plant a {
    padding: 13px 25px;
  }
}