.about__bg__ph {
  position: absolute;
  top: 120vw;
  left: 0;
  background: #000;
  height: 74.6vw;
  overflow: hidden;
  -webkit-transform: skewY(-30deg);
          transform: skewY(-30deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  width: 100%;
}

.about__bg__ph__inner {
  position: absolute;
  top: 0;
  left: 0;
  -webkit-transform: skewY(30deg);
          transform: skewY(30deg);
  width: 100vw;
  height: 100vh;
}

.about__bg__ph__inner img {
  position: absolute;
  top: 0;
  left: 50%;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  height: 100%;
  width: auto;
  max-width: initial;
}

.about__bg__ph__inner img.-fit_h {
  height: 150%;
  width: auto;
}

.about__bg__geometry {
  position: absolute;
  left: 0;
  bottom: 16vw;
  background: url(../img/common/bg_geometory_01.png) no-repeat center/cover;
  height: 152vw;
  overflow: hidden;
  -webkit-transform: skewY(30deg);
          transform: skewY(30deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  width: 100%;
}

.about__read {
  color: #fff;
}

.c-subttlhead.-about {
  padding-top: 40px;
}

.about__tab {
  margin-top: 40px;
  position: relative;
  z-index: 1;
}

.about__tab__list {
  display: none;
}

.about__tab__list__item:after {
  position: absolute;
  left: 50%;
  bottom: 16px;
  border-right: 1px solid;
  border-bottom: 1px solid;
  content: '';
  height: 10px;
  -webkit-transform: rotate(45deg) translateX(-50%);
          transform: rotate(45deg) translateX(-50%);
  width: 10px;
}

.about__tab__list__item.-active {
  background: #474353;
}

.about__tab__list__item__inner h4 {
  font-weight: bold;
  text-align: center;
}

.about__tab__panel {
  color: #fff;
}

.about__tab__panel__item .js-acc_trigger {
  color: #fff;
}

.about__tab__panel__item + .about__tab__panel__item {
  margin-top: 10px;
}

.about__tab__panel__item__head {
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  background: #302b3d;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 114px;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: relative;
}

.about__tab__panel__item__head__inner {
  text-align: center;
}

.about__tab__panel__item__head__inner h4 {
  font-size: 24px;
  font-size: 1.5rem;
  font-weight: bold;
}

.about__tab__panel__item__head__inner img {
  margin-top: 14px;
  width: 35px;
}

.about__tab__panel__item__head:after {
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  position: absolute;
  top: 50%;
  right: 20px;
  border-right: 1px solid;
  border-bottom: 1px solid;
  content: '';
  height: 10px;
  -webkit-transform: translateY(-50%) rotate(45deg);
          transform: translateY(-50%) rotate(45deg);
  width: 10px;
}

.about__tab__panel__item__head.-active {
  background: #474353;
}

.about__tab__panel__item__head.-active:after {
  -webkit-transform: translateY(-50%) rotate(-135deg);
          transform: translateY(-50%) rotate(-135deg);
}

.about__tab__panel__item__table {
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  height: 0;
  opacity: 0;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
  overflow: scroll;
}

.about__tab__panel__item__head.-active + .about__tab__panel__item__table {
  background: #474353;
  opacity: 1;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
}

.about__tab__panel__item.-active .about__tab__panel__item__table {
  -webkit-animation: showPanel 0.5s ease 0.2s forwards;
          animation: showPanel 0.5s ease 0.2s forwards;
}

@-webkit-keyframes showPanel {
  from {
    opacity: 0;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  to {
    opacity: 1;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

@keyframes showPanel {
  from {
    opacity: 0;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  to {
    opacity: 1;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

.topic_column {
  font-size: 28.8px;
  font-size: 1.8rem;
  position: relative;
  font-weight: 700;
  margin-top: 40px;
  padding: 25px 44px;
  z-index: 0;
}

.topic_column:before {
  position: absolute;
  top: 6px;
  left: 6px;
  bottom: 6px;
  right: 6px;
  background: #003c8c;
  content: '';
  z-index: -1;
}

.topic_column:after {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: -webkit-repeating-linear-gradient(135deg, #003c8c, #003c8c 3px, #003c8c 0, #003c8c 6px);
  background: repeating-linear-gradient(-45deg, #003c8c, #003c8c 3px, #003c8c 0, #003c8c 6px);
  content: '';
  z-index: -2;
}

.topic_column a {
  color: #fff;
}

.about__tab__panel__item__table__inner {
  margin: 0 auto;
  padding: 28px 0 20px;
}

.about__tab__panel__item__table__inner__head {
  display: -webkit-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  margin: 0 20px;
  padding-left: 100px;
}

.about__tab__panel__item__table__inner__head li {
  border: 1px solid rgba(204, 204, 204, 0.3);
  border-radius: 9999px;
  text-align: center;
}

.about__tab__panel__item__table__inner__head li.-col01 {
  width: 76px;
}

.about__tab__panel__item__table__inner__head li.-col02 {
  width: 162px;
}

.about__tab__panel__item__table__inner__head li.-col03 {
  width: 248px;
}

.about__tab__panel__item__table__inner__head li.-col04 {
  width: 334px;
}

.about__tab__panel__item__table__inner__head li + li {
  margin-left: 20px;
}

.about__tab__panel__item__table__inner__list {
  display: -webkit-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  margin: 0 20px;
  padding: 4px 0;
}

.about__tab__panel__item__table__inner__list:first-of-type {
  margin-top: 16px;
  padding-top: 0;
}

.about__tab__panel__item__table__inner__list dt {
  font-size: 22.4px;
  font-size: 1.4rem;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100px;
}

.about__tab__panel__item__table__inner__list dd {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.about__tab__panel__item__table__inner__list dd .group {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.about__tab__panel__item__table__inner__list dd .group .item {
  font-size: 19.2px;
  font-size: 1.2rem;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 76px;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  text-align: center;
  width: 76px;
}

.about__tab__panel__item__table__inner__list dd .group .item.-phase02,
.about__tab__panel__item__table__inner__list dd .group .item.-phase01,
.about__tab__panel__item__table__inner__list dd .group .item.-phase01 p {
  background: #000;
  color: #bbb;
}

.about__tab__panel__item__table__inner__list dd .group .item.-phase02 a {
  color: #ccc;
}

 {
  opacity: 0.6;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=60)";
}

.about__tab__panel__item__table__inner__list dd .group .item.-phase00 {
  background: #5e5a68;
}

.about__tab__panel__item__table__inner__list dd .group .item.-phase00 p {
  opacity: 0.4;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=40)";
}

.about__tab__panel__item__table__inner__list dd .group .item + .item {
  margin-left: 10px;
}

.about__tab__panel__item__table__inner__list dd .group .item span {
  display: block;
  font-size: 16px;
  font-size: 1rem;
}

.about__tab__panel__item__table__inner__list dd .group .item a {
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  color: #fff;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 100%;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: relative;
  text-decoration: underline;
}

.about__tab__panel__item__table__inner__list dd .group .item a:hover {
  opacity: 1;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
}

.about__tab__panel__item__table__inner__list dd .group + .group {
  margin-left: 20px;
}

.about__tab__panel__item__table__inner__list + .about__tab__panel__item__table__inner__list {
  border-top: 1px solid rgba(204, 204, 204, 0.3);
}

.about__tab__panel__item__table__inner__guidelist {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-top: 16px;
}

.about__tab__panel__item__table__inner__guidelist__item {
  line-height: 16px;
  margin-left: 20px;
  font-size: 19.2px;
  font-size: 1.2rem;
}

.about__tab__panel__item__table__inner__guidelist__item:before {
  content: '';
  display: inline-block;
  height: 16px;
  margin-right: 0.5em;
  vertical-align: top;
  width: 26px;
}

.about__tab__panel__item__table__inner__guidelist__item {
  color: rgba(255, 255, 255, 0.6);
}

.about__tab__panel__item__table__inner__guidelist__item:before {
  background: #5e5a68;
}

#about {
  padding-top: 60px;
  margin-top: -60px;
}

.about {
  position: relative;
}

.feature__bg__ph {
  position: absolute;
  top: -25.4vw;
  left: 0;
  background: #000;
  height: 74.6vw;
  -webkit-transform: skewY(30deg);
          transform: skewY(30deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  overflow: hidden;
  width: 100%;
}

.feature__bg__ph__inner {
  position: absolute;
  top: 0;
  left: 0;
  -webkit-transform: skewY(-30deg);
          transform: skewY(-30deg);
  width: 100vw;
  height: 100vh;
}

.feature__bg__ph__inner img {
  position: absolute;
  top: 0;
  left: 50%;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  height: 100%;
  width: auto;
  max-width: initial;
}

.feature__bg__ph__inner img.-fit_h {
  height: 150%;
  width: auto;
}

.feature__bg__ph__02 {
  position: absolute;
  top: auto;
  left: 0;
  bottom: -48vw;
  background: #000;
  height: 66.6vw;
  -webkit-transform: skewY(-30deg);
          transform: skewY(-30deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  overflow: hidden;
  width: 100%;
}

.feature__bg__ph__02__inner {
  position: absolute;
  top: 0;
  left: 0;
  -webkit-transform: skewY(30deg);
          transform: skewY(30deg);
  width: 100vw;
  height: 100vh;
}

.feature__bg__ph__02__inner img {
  position: absolute;
  top: 0;
  left: 50%;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  height: 100%;
  width: auto;
  max-width: initial;
}

.feature__bg__ph__02__inner img.-fit_h {
  height: 150%;
  width: auto;
}

.feature__bg__geometry {
  position: absolute;
  left: 0;
  bottom: 18.6vw;
  background: url(../img/common/bg_geometory_02.png) no-repeat center/cover;
  height: 152vw;
  overflow: hidden;
  -webkit-transform: skewY(-30deg);
          transform: skewY(-30deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  width: 100%;
}

.feature__bg__geometry canvas {
  -webkit-transform: translateY(-50%) skewY(30deg);
          transform: translateY(-50%) skewY(30deg);
  position: absolute;
  top: 50%;
  left: 0;
}

#feature {
  padding-top: 60px;
  margin-top: -60px;
}

.feature {
  position: relative;
}

.feature p:not(:first-child) {
  margin: 0;
}

.feature__ttlhead_ja {
  margin-bottom: -40px;
}

.feature__block {
  margin: 40px auto -40px;
  padding-top: 40px;
  position: relative;
}

.feature__block__head {
  background: #003c8c;
  padding-top: 20px;
  position: relative;
}

.feature__block__head__ph {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.feature__block__head__ph p {
  margin-top: 0;
  width: 50%;
}

.feature__block__head__ph p img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  object-position: top center;
}

.feature__block__head__info {
  color: #fff;
  padding: 20px 0 20px 20px;
}

.feature__block__head__info__ttl {
  font-size: 32px;
  font-size: 2rem;
  font-weight: bold;
}

.feature__block__head__info__txt {
  font-size: 25.6px;
  font-size: 1.6rem;
}

.feature__block__head__info__tags {
  border-top: 1px solid #052350;
  padding-top: 8px;
  margin-top: 8px;
}

.feature__block__head__info__tags__ttl {
  font-size: 22.4px;
  font-size: 1.4rem;
}

.feature__block__head__info__tags__list {
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
  display: -webkit-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  margin: 8px 0 -8px;
}

.feature__block__head__info__tags__list__item {
  font-size: 22.4px;
  font-size: 1.4rem;
  background: #000;
  color: #1296d2;
  line-height: 25px;
  margin: 0 8px 8px 0;
  padding: 0 0.5em;
}

.feature__block__head__info__tags__list__item:last-of-type {
  margin: 0;
}

.feature__block__head__info__tags__list__item.-exthin {
  padding: 0 0.2em;
}

.feature__block__head__info__tags__list__item.-exthin span {
  display: block;
  -webkit-transform: scale(0.9, 1);
          transform: scale(0.9, 1);
}

.feature__block__head__info__tags__list__item.-thin {
  padding: 0 0.25em;
}

.feature__block__head__info__tags__list__item.-thin span {
  display: block;
  -webkit-transform: scale(0.95, 1);
          transform: scale(0.95, 1);
}

.feature__block__head__info__link {
  position: relative;
  display: block;
  font-weight: 500;
  text-align: center;
  background: #ffff00;
  line-height: 1;
  z-index: 1;
  color: #fff;
}

.feature__block__head__info__link:after {
  position: absolute;
  top: 50%;
  right: 14px;
  content: '';
  width: 8px;
  height: 8px;
  border-top: 1px solid;
  border-right: 1px solid;
  -webkit-transform: translate(0, -50%) rotate(45deg);
          transform: translate(0, -50%) rotate(45deg);
}

.feature__block__head__info__link:before {
  content: '';
  width: 100%;
  height: 100%;
  background: #000;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  -webkit-transform: scaleX(0);
          transform: scaleX(0);
  -webkit-transform-origin: 0 0;
          transform-origin: 0 0;
  -webkit-transition: -webkit-transform 0.2s 0s cubic-bezier(0, 0.55, 0.45, 1);
  transition: -webkit-transform 0.2s 0s cubic-bezier(0, 0.55, 0.45, 1);
  transition: transform 0.2s 0s cubic-bezier(0, 0.55, 0.45, 1);
  transition: transform 0.2s 0s cubic-bezier(0, 0.55, 0.45, 1), -webkit-transform 0.2s 0s cubic-bezier(0, 0.55, 0.45, 1);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}

.feature__block__head__info__link:hover {
  opacity: 1;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
  color: #fff;
  text-decoration: none;
}

.feature__block__head__info__link:hover:before {
  -webkit-transform: scaleX(1);
          transform: scaleX(1);
}

.feature__block__head__info__link:hover:after {
  border-top: 1px solid #fff;
  border-right: 1px solid #fff;
}

.feature__block__head__info__link span {
  display: block;
  font-size: 2.6vw;
  margin-top: 8px;
  text-align: center;
}

.feature__block__list__item {
  color: #191428;
  position: relative;
}

.feature__block__list__item:first-child {
  z-index: 1;
}

.feature__block__list__item:nth-of-type(1):before {
  position: absolute;
  top: 6px;
  left: 6px;
  background: url(../img/feature/ico_tech_01.svg) no-repeat 0 0/100%;
  content: '';
  display: block;
  height: 33px;
  width: 27px;
}

.feature__block__list__item:nth-of-type(2):before {
  position: absolute;
  top: 6px;
  left: 6px;
  background: url(../img/feature/ico_tech_02.svg) no-repeat 0 0/100%;
  content: '';
  display: block;
  height: 33px;
  width: 27px;
}

.feature__block__list__item:nth-of-type(3):before {
  position: absolute;
  top: 6px;
  left: 6px;
  background: url(../img/feature/ico_tech_03.svg) no-repeat 0 0/100%;
  content: '';
  display: block;
  height: 33px;
  width: 27px;
}

.feature__block__list__item:nth-of-type(4):before {
  position: absolute;
  top: 6px;
  left: 6px;
  background: url(../img/feature/ico_tech_04.svg) no-repeat 0 0/100%;
  content: '';
  display: block;
  height: 33px;
  width: 27px;
}

.feature__block__list__item__bg {
  position: absolute;
  top: 73px;
  left: 0;
  background: #fff;
  height: calc(100% - 73px);
  width: 100%;
}

.feature__block__list__item__bg:before {
  position: absolute;
  top: -73px;
  left: 0;
  border-bottom: solid 73px #fff;
  border-left: solid 73px transparent;
  content: '';
  display: block;
  height: 0;
  width: 100%;
}

.feature__block__list__item__cont {
  position: relative;
  z-index: 1;
}

.feature__block__list__item__cont__ttl {
  font-size: 25.6px;
  font-size: 1.6rem;
  font-weight: bold;
  padding: 16px 20px 0 65px;
}

.feature__block__list__item__cont__ttl span {
  font-size: 19.2px;
  font-size: 1.2rem;
}

.feature__block__list__item__cont__txt {
  font-size: 22.4px;
  font-size: 1.4rem;
  padding: 4px 20px 0 65px;
  margin-top: 0 !important;
}

.feature__block__list__item__cont__ph {
  margin-top: 12px;
  position: relative;
}

.feature__block__list__item__cont__ph__item:nth-of-type(2) {
  position: absolute;
  top: 0;
  left: 0;
}

.feature__block__list__item + .feature__block__list__item {
  margin-top: 1px;
}

.feature__block__top {
  cursor: pointer;
  text-align: right;
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.feature__block__top a {
  font-size: 19.2px;
  font-size: 1.2rem;
  color: #fff;
  display: inline-block;
  line-height: 20px;
  margin: 0 0 0 auto;
  padding-left: 20px;
  position: relative;
  text-decoration: underline;
}

.feature__block__top a:before {
  position: absolute;
  top: 5px;
  left: 0;
  background: url(../img/feature/ico_arw.svg) no-repeat center/100%;
  content: '';
  display: block;
  height: 14px;
  width: 14px;
}

.js-ground_canvas__wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.js-ground_canvas {
  -webkit-transform: skewY(8deg);
          transform: skewY(8deg);
  position: absolute;
  top: -25%;
  left: 0;
  width: 100%;
  height: 150%;
  overflow: hidden;
}

.infratectorcore__mainvisual__bg {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

.infratectorcore__mainvisual__bg span {
  position: absolute;
  top: 0;
  left: 0;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-size: cover;
  display: block;
  height: 100%;
  width: 100%;
}

.infratectorcore__mainvisual__bg span:nth-of-type(1) {
  -webkit-animation: symbol_anim 1s 0.1s ease forwards;
          animation: symbol_anim 1s 0.1s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_01_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(2) {
  -webkit-animation: symbol_anim 1s 0.2s ease forwards;
          animation: symbol_anim 1s 0.2s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_02_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(3) {
  -webkit-animation: symbol_anim 1s 0.3s ease forwards;
          animation: symbol_anim 1s 0.3s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_03_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(4) {
  -webkit-animation: symbol_anim 1s 0.4s ease forwards;
          animation: symbol_anim 1s 0.4s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_04_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(5) {
  -webkit-animation: symbol_anim 1s 0.5s ease forwards;
          animation: symbol_anim 1s 0.5s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_05_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(6) {
  -webkit-animation: symbol_anim 1s 0.6s ease forwards;
          animation: symbol_anim 1s 0.6s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_06_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(7) {
  -webkit-animation: symbol_anim 1s 0.7s ease forwards;
          animation: symbol_anim 1s 0.7s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_07_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(8) {
  -webkit-animation: symbol_anim 1s 0.8s ease forwards;
          animation: symbol_anim 1s 0.8s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_08_nrw.png);
}

.infratectorcore__mainvisual__bg span:nth-of-type(9) {
  -webkit-animation: symbol_anim 1s 0.9s ease forwards;
          animation: symbol_anim 1s 0.9s ease forwards;
  background-image: url(../img/mainvisual/bg_triangle_09_nrw.png);
}

#qa {
  padding-top: 60px;
  margin-top: -60px;
  padding-bottom: 40vw;
}

#topics {
  margin-top: 60px;
  margin-top: -60px;
}

@media (min-width: 781px) {

  .about__bg__ph {
    position: absolute;
    top: 1070px;
    left: 0;
    height: 500px;
  }

  .about__bg__ph__inner img {
    height: auto;
    width: 150%;
  }

  .about__bg__geometry {
    position: absolute;
    top: 1070px;
    left: 0;
    bottom: auto;
    height: 1260px;
  }

  .c-subttlhead.-about {
    padding-top: 60px;
  }

  .about__tab {
    margin: 60px auto 0;
    max-width: 1040px;
  }

  .about__tab__list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    height: 270px;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
  }

  .about__tab__list__item {
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    background: #302b3d;
    color: #fff;
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    height: 250px;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    position: relative;
    width: calc((100% - 60px) / 4);
  }

  .about__tab__list__item.-active {
    height: 270px;
  }

  .about__tab__list__item__inner h4 {
    font-size: 1.6rem;
  }

  .about__tab__list__item__inner img {
    display: block;
    margin: 24px auto 0;
    width: 35px;
  }

  .about__tab__panel {
    background: #474353;
    height: auto;
  }

  .about__tab__panel__item {
    display: none;
    position: relative;
  }

  .about__tab__panel__item.-active {
    display: block;
  }

  .about__tab__panel__item + .about__tab__panel__item {
    margin: 0;
  }

  .about__tab__panel__item__head {
    display: none;
  }

  .about__tab__panel__item__table {
    height: auto !important;
    overflow: hidden;
    padding: 44px 0 74px;
  }

  .topic_column {
    font-size: 1.8rem;
    margin-top: 40px;
    padding: 22px;
  }

  .topic_column:after {
    background: -webkit-repeating-linear-gradient(135deg, #003c8c, #003c8c 3.5px, #003c8c 0, #003c8c 7px);
    background: repeating-linear-gradient(-45deg, #003c8c, #003c8c 3.5px, #003c8c 0, #003c8c 7px);
  }

  .about__tab__panel__item__table__inner {
    padding: 0;
  }

  .-tab01 .about__tab__panel__item__table__inner {
    width: 626px;
  }

  .-tab02 .about__tab__panel__item__table__inner {
    width: 712px;
  }

  .-tab03 .about__tab__panel__item__table__inner {
    width: 434px;
  }

  .-tab04 .about__tab__panel__item__table__inner {
    width: 334px;
  }

  .about__tab__panel__item__table__inner__head {
    margin: 0;
  }

  .about__tab__panel__item__table__inner__head li {
    font-size: 1.3rem;
    line-height: 20px;
  }

  .about__tab__panel__item__table__inner__list {
    margin: 0;
  }

  .about__tab__panel__item__table__inner__list dd .group .item a:hover {
    text-decoration: none;
  }

  .about__tab__panel__item__table__inner__guidelist {
    position: absolute;
    left: 11px;
    bottom: 31px;
  }

  #about {
    padding-top: 118px;
    margin-top: -118px;
  }

  .feature__bg__ph {
    position: absolute;
    top: -230px;
    left: 0;
    height: 500px;
  }

  .feature__bg__ph__inner img {
    height: auto;
    width: 150%;
  }

  .feature__bg__ph__02 {
    position: absolute;
    top: 3430px;
    left: 0;
    bottom: auto;
    height: 500px;
  }

  .feature__bg__ph__02__inner img {
    height: auto;
    width: 150%;
  }

  .feature__bg__geometry {
    position: absolute;
    top: 2170px;
    left: 0;
    bottom: auto;
    height: 1260px;
  }

  #feature {
    padding-top: 118px;
    margin-top: -118px;
  }

  .feature__ttlhead_ja {
    margin-bottom: -118px;
  }

  .feature__block {
    margin: 54px auto -118px;
    padding-top: 118px;
  }

  .feature__block__head {
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    padding: 40px 0 40px 40px;
  }

  .feature__block:nth-of-type(1) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(2) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(3) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(4) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(5) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(6) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block:nth-of-type(7) .feature__block__head:before {
    position: absolute;
    top: -30px;
    left: 40px;
    height: 86px;
    width: 60px;
  }

  .feature__block__head__ph {
    width: 460px;
  }

  .feature__block__head__ph p {
    height: 140px;
    width: 224px;
  }

  .feature__block__head__info {
    position: relative;
    padding: 0 0 0 40px;
    width: calc(100% - 460px);
  }

  .feature__block__head__info__ttl {
    font-size: 2.6rem;
    line-height: 1;
  }

  .feature__block__head__info__txt {
    font-size: 1.4rem;
    line-height: calc(22 / 14);
    margin-top: 8px !important;
  }

  .feature__block__head__info__tags {
    padding-top: 14px;
    margin-top: 14px;
  }

  .feature__block__head__info__tags__list {
    margin: 10px 0 -10px;
  }

  .feature__block__head__info__tags__list__item {
    font-size: 1.2rem;
    line-height: 20px;
    margin: 0 10px 10px 0;
  }

  .feature__block__head__info__link {
    position: absolute;
    bottom: 0;
    right: 60px;
    font-size: 1.8rem;
    margin: 8px auto 0;
    padding: 14px 0 17px;
    width: 190px;
  }

  .feature__block__head__info__link.-line2 {
    padding: 8px 0 10px;
  }

  .feature__block__head__info__link span {
    font-size: 1.2rem;
  }

  .feature__block__list__item {
    height: 280px;
  }

  .feature__block__list__item.-wide {
    height: 300px;
  }

  .feature__block__list__item.-narrow {
    height: 263px;
  }

  .feature__block__list__item:nth-of-type(1):before {
    position: absolute;
    top: 8px;
    left: 8px;
    height: 44px;
    width: 36px;
  }

  .feature__block__list__item:nth-of-type(2):before {
    position: absolute;
    top: 8px;
    left: 8px;
    height: 44px;
    width: 36px;
  }

  .feature__block__list__item:nth-of-type(3):before {
    position: absolute;
    top: 8px;
    left: 8px;
    height: 44px;
    width: 36px;
  }

  .feature__block__list__item:nth-of-type(4):before {
    position: absolute;
    top: 8px;
    left: 8px;
    height: 44px;
    width: 36px;
  }

  .feature__block__list__item__bg {
    position: absolute;
    top: 100px;
    left: 0;
    height: calc(100% - 100px);
  }

  .feature__block__list__item__bg:before {
    position: absolute;
    top: -100px;
    left: 0;
    border-bottom: solid 100px #fff;
    border-left: solid 100px transparent;
  }

  .feature__block__list__item__cont__ttl {
    font-size: 2rem;
    padding: 24px 0 0 80px;
  }

  .feature__block__list__item__cont__ttl span {
    font-size: 1.4rem;
  }

  .feature__block__list__item__cont__txt {
    font-size: 1.4rem;
    padding: 4px 0 0 80px;
  }

  .feature__block__list__item__cont__ph {
    position: absolute;
    top: 0;
    left: 0;
    margin: 0;
  }

  .feature__block:nth-of-type(1) .feature__block__list__item:nth-of-type(3) {
    height: 264px;
  }

  .feature__block:nth-of-type(2) .feature__block__list__item:nth-of-type(3) {
    height: 236px;
  }

  .feature__block:nth-of-type(3) .feature__block__list__item:nth-of-type(3) {
    height: 264px;
  }

  .feature__block:nth-of-type(4) .feature__block__list__item:nth-of-type(3) {
    height: 264px;
  }

  .feature__block__top {
    margin-top: 14px;
  }

  .feature__block__top a {
    font-size: 1.4rem;
    padding-left: 24px;
  }

  .feature__block__top a:before {
    position: absolute;
    top: 3px;
    left: 0;
    height: 18px;
    width: 18px;
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(1) {
    background-image: url(../img/mainvisual/bg_triangle_01.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(2) {
    background-image: url(../img/mainvisual/bg_triangle_02.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(3) {
    background-image: url(../img/mainvisual/bg_triangle_03.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(4) {
    background-image: url(../img/mainvisual/bg_triangle_04.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(5) {
    background-image: url(../img/mainvisual/bg_triangle_05.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(6) {
    background-image: url(../img/mainvisual/bg_triangle_06.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(7) {
    background-image: url(../img/mainvisual/bg_triangle_07.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(8) {
    background-image: url(../img/mainvisual/bg_triangle_08.png);
  }

  .infratectorcore__mainvisual__bg span:nth-of-type(9) {
    background-image: url(../img/mainvisual/bg_triangle_09.png);
  }

  #qa {
    padding-top: 118px;
    margin-top: -118px;
    padding-bottom: 140px;
  }

  #topics {
    padding-top: 118px;
    margin-top: -118px;
  }
}

@media (max-width: 780px) {

  .about__fig__inner__pin.-pin01 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -55.2vw;
  }

  .about__fig__inner__pin.-pin01 .balloon:after {
    left: 67.5%;
  }

  .about__fig__inner__pin.-pin02 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -72.3vw;
  }

  .about__fig__inner__pin.-pin02 .balloon:after {
    left: 86.5%;
  }

  .about__fig__inner__pin.-pin03 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -39.2vw;
  }

  .about__fig__inner__pin.-pin04 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -46.2vw;
  }

  .about__fig__inner__pin.-pin04 .balloon:after {
    left: 57%;
  }

  .about__fig__inner__pin.-pin05 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -70.2vw;
  }

  .about__fig__inner__pin.-pin05 .balloon:after {
    left: 83.5%;
  }

  .about__fig__inner__pin.-pin06 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -33vw;
  }

  .about__fig__inner__pin.-pin06 .balloon:after {
    left: 42%;
  }

  .about__fig__inner__pin.-pin07 .balloon {
    position: absolute;
    top: -42.7vw;
    left: -21.5vw;
  }

  .about__fig__inner__pin.-pin07 .balloon:after {
    left: 29.5%;
  }

  .feature__block__head__ph p {
    background: #000;
    height: 28vw;
    text-align: center;
    overflow: hidden;
  }

  .feature__block__head__info__txt {
    margin-top: 0 !important;
  }

  .feature__block__head__info__link {
    font-size: 1.5rem;
    margin: 14px auto 0;
    padding: 15px 0;
    width: 62.9vw;
  }
}