@media screen and (min-width: 768px) {
  #header .group {
    top: 33px;
  }
  #header .group .group-nav .nav {
    margin-right: 26px;
  }
  #header .group .group-nav + .group-nav {
    margin: 7px 30px 0 0;
  }
}
main {
  overflow: hidden;
}

#header {
  height: auto;
  background: url("../img/shared/bg.jpg");
}
#header #key {
  position: relative;
  z-index: 1;
  height: 100vh;
}
#header #key .key-ttl {
  position: absolute;
  top: 45vh;
  left: 50%;
  width: 107%;
  transform: translateX(-50%);
}
#header #key h1 {
  z-index: 5;
  bottom: 10vw;
}
#header #key .img2 {
  position: absolute;
  top: 20vh;
  left: 50%;
  bottom: 20vh;
  width: 70vw;
  transform: translateX(-50%);
  -webkit-mask-image: url("../img/concept/key_mask2.png");
          mask-image: url("../img/concept/key_mask2.png");
  -webkit-mask-size: auto 100vh;
          mask-size: auto 100vh;
  -webkit-mask-position: 50% 0;
          mask-position: 50% 0;
  overflow: hidden;
  border-top-left-radius: 40vw;
  border-top-right-radius: 40vw;
  background-image: url("../img/concept/key_mask2.png");
  background-position: 50% 0%;
  background-size: 100vw 100vh;
}
#header #key .key-ttl2 {
  position: absolute;
  z-index: 2;
  top: 30vh;
  left: 25vw;
}
#header #key .key-ttl3 {
  position: absolute;
  z-index: 2;
  top: 63vh;
  right: 25vw;
}
#header #key-bottom {
  position: relative;
  margin: 10vw 0 0;
  padding: 0 0 30vw;
}
#header #key-bottom::before {
  content: "";
  position: absolute;
  top: -20vw;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("../img/concept/key_bg.png") no-repeat left center/cover;
}
#header #key-bottom .wrap {
  z-index: 2;
}
#header #key-bottom h2 {
  margin: 0 auto 7vw;
  height: 50vw;
  overflow: hidden;
}
#header #key-bottom h2 span {
  display: inline-block;
  position: relative;
  padding: 0 0 2vw;
}
#header #key-bottom h2 span::before {
  content: "";
  position: absolute;
  top: 100%;
  left: 48%;
  height: 1000px;
  width: 1px;
  background: #888a99;
}
#header #key-bottom .txt {
  text-align: justify;
  letter-spacing: 0.1em;
}
#header #key-bottom .txt + .txt {
  margin-top: 20px;
}
@media screen and (min-width: 768px) {
  #header #key {
    height: 963px;
  }
  #header #key .key-ttl {
    top: 423px;
    width: 1640px;
  }
  #header #key h1 {
    bottom: 173px;
  }
  #header #key .img2 {
    top: 184px;
    left: 50%;
    bottom: 25px;
    width: 540px;
    -webkit-mask-size: 100vw 963px;
            mask-size: 100vw 963px;
    -webkit-mask-position: 50% 0;
            mask-position: 50% 0;
    overflow: hidden;
    border-top-left-radius: 270px;
    border-top-right-radius: 270px;
    background-size: 100vw 963px;
  }
  #header #key .key-ttl2 {
    top: 310px;
    right: calc(50% + 336px);
    left: auto;
  }
  #header #key .key-ttl3 {
    top: 640px;
    left: calc(50% + 349px);
    right: auto;
  }
  #header #key-bottom {
    position: relative;
    margin: -54px 0 0;
    padding: 0 0 282px;
  }
  #header #key-bottom::before {
    top: -197px;
    background: url("../img/concept/key_bg.png") no-repeat left center;
  }
  #header #key-bottom h2 {
    margin: 0 auto 70px;
    height: 331px;
  }
  #header #key-bottom h2 span {
    padding: 0 0 10px;
  }
  #header #key-bottom .txt {
    text-align: center;
  }
  #header #key-bottom .txt + .txt {
    margin-top: 26px;
  }
}

@media screen and (min-width: 768px) {
  .hamburger, .group-fixed {
    opacity: 0;
    visibility: hidden;
  }
  .has-nav .hamburger, .has-nav .group-fixed {
    opacity: 0;
    visibility: hidden;
  }
  .has-nav2 .hamburger, .has-nav2 .group-fixed {
    opacity: 1;
    visibility: visible;
  }
}
#sec1 {
  position: relative;
  padding: 0 0 30vw;
}
#sec1::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 46.6vw;
  left: calc(50% - 23.3vw);
  background: url("../img/shared/bg2.jpg");
}
#sec1 .para {
  height: 93.3vw;
  position: relative;
  z-index: 2;
}
#sec1 .group-img {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 2;
  margin: -21.6vw 0 0;
}
#sec1 .group-img h2 {
  margin: 0 -4.53vw 0 0;
  width: 20.8vw;
  position: relative;
  z-index: 1;
}
#sec1 .group-img .img {
  margin: 21.6vw 0 0;
  height: 70vh;
  width: 67vw;
  position: relative;
  z-index: 2;
}
#sec1 .group-content {
  padding: 10vw 0 0;
}
#sec1 .group-content h3 {
  text-align: center;
  position: relative;
  padding: 6vw 0;
  margin: 0 0 6vw;
}
#sec1 .group-content h3::before {
  content: "";
  position: absolute;
  width: 6vw;
  height: 9vw;
  box-sizing: border-box;
  top: 0;
  left: 0;
  border-top: 1px solid #b2b2b2;
  border-left: 1px solid #b2b2b2;
}
#sec1 .group-content h3::after {
  content: "";
  position: absolute;
  width: 6vw;
  height: 9vw;
  box-sizing: border-box;
  bottom: 0;
  right: 0;
  border-bottom: 1px solid #b2b2b2;
  border-right: 1px solid #b2b2b2;
}
#sec1 .group-content h3 .txt-latin {
  letter-spacing: inherit;
}
#sec1 .group-content .group-txt .txt {
  letter-spacing: 0.1em;
  text-align: justify;
}
@media screen and (max-width: 767px) {
  #sec1 .group-content .group-txt .txt + .txt {
    margin-top: 20px;
  }
}
#sec1 .group-content .group-txt .txt-latin {
  letter-spacing: inherit;
}
@media screen and (min-width: 768px) {
  #sec1 {
    padding: 0 0 287px;
  }
  #sec1::before {
    width: 350px;
    left: calc(50% - 270px);
  }
  #sec1 .para {
    height: 700px;
  }
  #sec1 .group-img {
    position: absolute;
    margin: 0;
    top: -162px;
    left: 319px;
    z-index: 2;
  }
  #sec1 .group-img h2 {
    margin: 0 -34px 0 0;
    width: auto;
  }
  #sec1 .group-img .img {
    margin: 162px 0 0;
    height: 1100px;
    width: 503px;
  }
  #sec1 .group-content {
    padding: 86px 0 0;
  }
  #sec1 .group-content h3 {
    height: 583px;
    margin: 0 0 107px 59px;
    padding: 0 73px;
  }
  #sec1 .group-content h3::before {
    width: 47px;
    height: 83px;
    right: 0;
    left: auto;
    border-top: 1px solid #b2b2b2;
    border-left: 0;
    border-right: 1px solid #b2b2b2;
  }
  #sec1 .group-content h3::after {
    width: 47px;
    height: 83px;
    bottom: 0;
    left: 0;
    right: auto;
    border-right: 0;
    border-left: 1px solid #b2b2b2;
  }
}
@media screen and (min-width: 768px) and (max-width: 1300px) {
  #sec1 .group-content h3 {
    letter-spacing: 0.05em;
  }
}
@media screen and (min-width: 768px) {
  #sec1 .group-content .group-txt {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-end;
    gap: 27px;
    height: 388px;
    margin: 0 0 0 8px;
  }
}

#sec2 .set1 h2 {
  position: absolute;
  width: 7.785vw;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  top: -18vw;
}
#sec2 .set1 h2 .txt-latin {
  letter-spacing: inherit;
}
#sec2 .set1 .para {
  height: 65vw;
}
#sec2 .set1 .para .img-parallax img {
  max-width: 86.66vw;
  left: 50%;
  transform: translateX(-50%);
}
#sec2 .set1 .group-txt {
  margin: 7vw 0 0;
}
#sec2 .set1 .group-txt .txt {
  letter-spacing: 0.1em;
}
#sec2 .set1 .group-txt .txt .txt-latin {
  letter-spacing: inherit;
}
@media screen and (max-width: 767px) {
  #sec2 .set1 .group-txt .txt + .txt {
    margin-top: 20px;
  }
}
#sec2 .set2 {
  padding: 15vw 0 20vw;
}
#sec2 .set2 .group-title {
  margin: 0 0 10vw var(--wrapPadding);
}
#sec2 .set2 .group-title h2 {
  width: 62vw;
  margin: 0 0 3vw;
}
#sec2 .set2 .group-title h3 span {
  display: inline-block;
  padding-right: 2vw;
  position: relative;
}
#sec2 .set2 .group-title h3 span::before {
  content: "";
  position: absolute;
  left: 100%;
  height: 1px;
  background: #888a99;
  width: 100vw;
  top: 50%;
}
#sec2 .set2 .item .img {
  margin: 0 0 5vw;
}
#sec2 .set2 .item .group-content .title {
  margin: 0 0 4vw;
  text-decoration: underline;
  text-underline-offset: 8px;
}
#sec2 .set2 .item .group-content dl {
  display: flex;
  gap: 7px;
  letter-spacing: 0.05em;
}
#sec2 .set2 .item .group-content dl dt {
  letter-spacing: 0.1em;
  min-width: -moz-max-content;
  min-width: max-content;
}
#sec2 .set2 .item + .item {
  margin-top: 10vw;
}
@media screen and (min-width: 768px) {
  #sec2 .set1 .wrap {
    width: 1130px;
  }
  #sec2 .set1 h2 {
    width: 45px;
    top: -135px;
  }
  #sec2 .set1 .para {
    height: 490px;
  }
  #sec2 .set1 .para .img-parallax img {
    max-width: 1130px;
  }
  #sec2 .set1 .group-txt {
    display: flex;
    flex-direction: row-reverse;
    gap: 35px;
    height: 392px;
    margin: 78px 0 0;
    justify-content: center;
    line-height: 35px;
  }
  #sec2 .set2 {
    padding: 0 0 184px;
  }
  #sec2 .set2 .group-title {
    display: flex;
    align-items: flex-end;
    gap: 40px;
    margin: 0 0 79px -40px;
  }
  #sec2 .set2 .group-title h2 {
    width: auto;
    margin: 0;
  }
  #sec2 .set2 .group-title h3 span {
    padding-right: 12px;
  }
  #sec2 .set2 .wrap {
    width: 1136px;
  }
  #sec2 .set2 .item {
    display: flex;
    gap: 52px;
    align-items: flex-start;
  }
  #sec2 .set2 .item .img {
    width: 400px;
    height: 130px;
    max-width: calc(100% - 668px);
    margin: 10px 0 0;
  }
  #sec2 .set2 .item .group-content .title {
    margin: 0 0 26px;
  }
  #sec2 .set2 .item .group-content dl {
    margin: 0 -20px 0 0;
  }
  #sec2 .set2 .item + .item {
    margin-top: 60px;
  }
}

#sec3 {
  position: relative;
  z-index: 2;
}
#sec3 .set1 {
  height: 100vh;
  position: relative;
}
#sec3 .set1 .circle {
  width: 38vw;
  position: absolute;
  z-index: 10;
  top: calc(50vh - 44.6vw);
  left: 50%;
  transition: all 0.5s;
}
#sec3 .set1 .circle img {
  animation: rotation 20s linear infinite;
}
#sec3 .set1 .circle.hide {
  opacity: 0;
  visibility: hidden;
}
#sec3 .set1 .group-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: all 0.5s;
}
#sec3 .set1 .group-img .img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 51.2vw;
  height: 51.2vw;
}
#sec3 .set1 .group-img:not(.step1) {
  opacity: 0;
  visibility: hidden;
}
#sec3 .set1 .group-img.active {
  opacity: 1 !important;
  visibility: visible !important;
}
#sec3 .set1 .group-img .title-common {
  position: absolute;
  z-index: 2;
  top: 55%;
  transform: translate(-50%, -50%);
  left: 50%;
}
#sec3 .set1 .group-img .title-common .txt-latin {
  letter-spacing: inherit;
  display: inline-block;
  padding-top: 56vw;
}
#sec3 .set2 {
  padding: 20vw 0;
}
#sec3 .set2 .bnr {
  width: 80%;
  position: relative;
  margin: 0 auto;
}
#sec3 .set2 .bnr::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: url("../img/shared/bg2.jpg");
}
#sec3 .set2 .bnr a {
  display: block;
  position: relative;
  text-decoration: none;
  border: 3px solid #b6b6b6;
  text-align: center;
  padding: 9vw 0;
}
#sec3 .set2 .bnr a::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border: 1px solid #b6b6b6;
}
#sec3 .set2 .bnr a .text {
  padding: 0 0 5vw;
  background: url("../img/shared/arrow2_sp.png") no-repeat bottom center/37.5px auto;
}
#sec3 .set2 .bnr a .text span {
  display: block;
  color: #f1f1f1;
  font-size: 4.5vw;
  line-height: 1.5;
}
#sec3 .set2 .bnr a .circle {
  position: absolute;
  width: 20vw;
  top: -9vw;
  left: -9vw;
  animation: rotation 20s linear infinite;
}
#sec3 .set2 .bnr + .bnr {
  margin-top: 15vw;
}
#sec3 .set2 .bnr + .bnr a .circle {
  left: auto;
  right: -8.267vw;
}
@media screen and (min-width: 768px) {
  #sec3 .set1 .circle {
    width: 287px;
    top: calc(50vh - 335.5px);
    left: calc(50% + 124px);
  }
  #sec3 .set1 .group-img .img {
    width: 384px;
    height: 384px;
  }
  #sec3 .set1 .group-img .title-common .txt-latin {
    padding-top: 325px;
  }
  #sec3 .set2 {
    padding: 168px 0 182px;
  }
  #sec3 .set2 .group-bnr {
    display: flex;
    justify-content: center;
    gap: 139px;
  }
  #sec3 .set2 .bnr {
    width: 349px;
    position: relative;
    margin: 0;
  }
  #sec3 .set2 .bnr::before {
    opacity: 0;
  }
  #sec3 .set2 .bnr a {
    padding: 38px 0 40px;
  }
  #sec3 .set2 .bnr a .text {
    padding: 0 0 30px;
    background: url("../img/shared/arrow2.png") no-repeat bottom center;
  }
  #sec3 .set2 .bnr a .text span {
    font-size: 26px;
    margin: 0 0 1px;
  }
  #sec3 .set2 .bnr a .circle {
    width: 135px;
    top: -58px;
    left: -62px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s;
  }
}
@media screen and (min-width: 768px) and (hover: hover) {
  #sec3 .set2 .bnr:hover::before {
    opacity: 1;
  }
  #sec3 .set2 .bnr:hover a .circle {
    opacity: 1;
    visibility: visible;
  }
}
@media screen and (min-width: 768px) {
  #sec3 .set2 .bnr + .bnr {
    margin-top: 0;
  }
  #sec3 .set2 .bnr + .bnr a .circle {
    right: -62px;
  }
}

#sec4 {
  position: relative;
  padding: 0 0 20vw;
}
#sec4::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: calc(50% + 10vw);
  top: -100vw;
  background: url("../img/concept/s3_bg.jpg") no-repeat center/cover;
}
#sec4 .inner {
  position: relative;
  z-index: 2;
  padding: 10vw 0 15vw;
}
#sec4 .inner::before {
  content: "";
  position: absolute;
  opacity: 0.4;
  top: 0;
  right: 0;
  bottom: 0;
  background: #b6b6b6;
  left: var(--wrapPadding);
}
#sec4 .inner:after {
  content: "";
  position: absolute;
  top: 5vw;
  right: 3vw;
  bottom: -7vw;
  left: 3vw;
  border: 1px solid #fff;
}
#sec4 .wrap {
  padding: 0 var(--wrapPadding) 0 10vw;
  z-index: 2;
}
#sec4 h2 {
  position: absolute;
  right: -3vw;
  bottom: -7vw;
  width: 90vw;
}
#sec4 .title-common {
  margin: 0 0 7vw;
  color: #fff;
}
#sec4 ul li {
  position: relative;
  font-size: 15px;
  padding: 0 0 0 25px;
}
#sec4 ul li::before {
  content: "";
  position: absolute;
  left: 0;
  background: url("../img/concept/s4_icon.png") no-repeat center/100% auto;
  width: 13px;
  height: 10px;
  top: 4px;
}
#sec4 ul li + li {
  margin-top: 20px;
}
@media screen and (min-width: 768px) {
  #sec4 {
    padding: 0 0 190px;
  }
  #sec4::before {
    left: calc(50% + 180px);
    top: -530px;
  }
  #sec4 .inner {
    padding: 75px 0 136px;
  }
  #sec4 .inner::before {
    left: calc(50% - 600px);
  }
}
@media screen and (min-width: 768px) and (max-width: 1260px) {
  #sec4 .inner::before {
    left: 30px;
  }
}
@media screen and (min-width: 768px) {
  #sec4 .inner:after {
    top: 26px;
    right: 25px;
    bottom: -46px;
    left: calc(50% - 665px);
  }
}
@media screen and (min-width: 768px) and (max-width: 1360px) {
  #sec4 .inner:after {
    left: 15px;
  }
}
@media screen and (min-width: 768px) {
  #sec4 .wrap {
    padding: 0;
    max-width: calc(100% - 120px);
  }
  #sec4 h2 {
    right: -24px;
    bottom: -47px;
    width: auto;
  }
  #sec4 .title-common {
    margin: 0 0 57px;
  }
  #sec4 ul {
    margin: 0 0 0 118px;
  }
  #sec4 ul li {
    font-size: 18px;
    padding: 0 0 0 30px;
  }
  #sec4 ul li::before {
    width: 16px;
    height: 13px;
    top: 6px;
  }
  #sec4 ul li + li {
    margin-top: 26px;
  }
}

#sec5 {
  position: relative;
  padding: 40vw 0 0;
}
#sec5 .bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
}
#sec5 .bg.fixed {
  position: fixed;
}
#sec5 h2 {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 70vw;
  margin: 0 auto;
}
#sec5 h3 {
  margin: 8vw auto 0;
  height: 50vw;
  position: relative;
  z-index: 2;
}
#sec5 .img {
  position: relative;
  z-index: 2;
  text-align: center;
  margin: 0 auto 20vw;
  width: 50vw;
}
#sec5 .group {
  padding: 31vw 0 25vw;
  z-index: 4;
  position: relative;
}
#sec5 .group::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  z-index: 2;
  bottom: 0;
  height: 60vw;
  background: url("../img/shared/bg.jpg");
}
#sec5 .group h4 {
  position: absolute;
  top: 5vw;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
}
#sec5 .group .gr-img {
  height: calc(100vh - 70vw);
  position: relative;
  z-index: 2;
}
#sec5 .group .gr-img .img2 {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 45.2vw;
  height: 73.33vw;
  max-width: 100%;
  overflow: hidden;
  backface-visibility: hidden;
}
#sec5 .group .gr-img .img2 img {
  width: 100vw !important;
  min-width: 100vw;
  min-height: calc(100vh - 70vw);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
#sec5 .group .btn-circle {
  width: 170px;
  margin: -56px auto 0;
  position: relative;
  z-index: 5;
}
#sec5 .group .btn-circle a::before {
  content: "Scene";
  font-size: 22px;
  line-height: 1.5;
  padding: 0 0 20px;
  background-position: bottom center;
  width: 100%;
  text-align: center;
  background-size: auto;
  height: auto;
  background-image: url("../img/concept/arrow.png");
}
@media screen and (min-width: 768px) {
  #sec5 {
    padding: 338px 0 0;
  }
  #sec5 h2 {
    width: auto;
    margin: 0;
  }
  #sec5 h3 {
    margin: 61px auto 0;
    height: 332px;
  }
  #sec5 .img {
    margin: 0 0 246px;
    width: auto;
  }
  #sec5 .group {
    padding: 172px 0 169px;
  }
  #sec5 .group:before {
    height: 526px;
  }
  #sec5 .group h4 {
    top: 20px;
  }
  #sec5 .group .gr-img {
    height: calc(100vh - 172px);
  }
  #sec5 .group .gr-img .img2 {
    width: 339px;
    height: 550px;
  }
  #sec5 .group .gr-img .img2 img {
    min-height: calc(100vh - 172px);
  }
  #sec5 .group .btn-circle a {
    font-size: 26px;
  }
  #sec5 .group .btn-circle a::before {
    padding: 0 0 37px;
    background-size: auto;
    background-image: url("../img/concept/arrow.png");
  }
}

#footer {
  position: relative;
  z-index: 5;
}