section.nav-main {
  background: unset;
}

#lead {
  padding: calc(100vh + 20vw) 0 20vw;
  position: relative;
  z-index: 1;
}
#lead .shadow {
  background: #000;
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  z-index: 1;
}
#lead .group {
  position: relative;
  opacity: 0;
  visibility: hidden;
  z-index: 2;
  transition: all 0.3s ease;
}
#lead h2 {
  color: #fff;
}
#lead .desc .txt {
  color: #fff;
  margin-bottom: 20px;
}
#lead .desc .txt:last-child {
  margin-bottom: 0;
}
@media only screen and (min-width: 768px) {
  #lead {
    padding: calc(100vh + 166px) 0 166px;
  }
  #lead .shadow {
    background: url(../img/concept/lead_shadow.png) repeat-x;
    background-size: cover;
  }
  #lead .group {
    display: flex;
    justify-content: space-between;
    flex-direction: row-reverse;
    margin: 0 -30px 0 0;
  }
  #lead h2 {
    font-size: 40px;
    line-height: 80px;
    white-space: nowrap;
    margin-bottom: 0;
    letter-spacing: 0.1em;
  }
  #lead .desc {
    display: flex;
    flex-direction: row-reverse;
    gap: 40px;
    margin-top: 64px;
    width: 800px;
    height: 410px;
  }
  #lead .desc .txt {
    font-size: 18px;
    line-height: 40px;
    margin-bottom: 0;
  }
}

#point {
  background: url(../img/shared/main_bg.jpg) repeat;
  padding: 20vw 0 10vw;
  position: relative;
  z-index: 1;
}
#point::before {
  content: "";
  position: absolute;
  background: url(../img/concept/point_bg.png) no-repeat;
  background-size: contain;
  background-position: center;
  aspect-ratio: 1427/507;
  width: 310vw;
  height: auto;
  top: 0;
  left: -110vw;
  right: 0;
  margin: 0 auto;
}
#point h2 {
  text-align: center;
  width: 66vw;
  margin: 0 auto 8vw;
}
#point h3 {
  text-align: center;
}
#point .txt-first {
  margin-bottom: 8vw;
}
#point .row1 {
  margin-bottom: 14vw;
  position: relative;
  z-index: 1;
}
#point .row1::before {
  content: "";
  position: absolute;
  background: url(../img/shared/main_bg2.jpg) repeat;
  right: calc(50% - 50vw);
  left: 50%;
  top: 10vw;
  bottom: 10vw;
  z-index: -1;
}
#point .row1 .img {
  margin-bottom: 10vw;
}
#point .row1 .img .photo1 {
  margin-bottom: 6vw;
}
#point .row1 .img .photo2 {
  margin: 0 auto;
  width: 80vw;
}
#point .row1 .desc h4 {
  text-align: center;
}
#point .row1 .desc .txt {
  margin-bottom: 6vw;
}
#point .row2 {
  margin-bottom: 12vw;
  position: relative;
  z-index: 1;
}
#point .row2::before {
  content: "";
  position: absolute;
  background: url(../img/shared/main_bg2.jpg) repeat;
  left: calc(50% - 50vw);
  right: 20vw;
  top: 10vw;
  bottom: 10vw;
  z-index: -1;
}
#point .row2 .flex-pc {
  margin-bottom: 10vw;
}
#point .row2 .flex-pc .img {
  margin-bottom: 8vw;
}
#point .row2 .flex-pc .desc h4 {
  text-align: center;
}
#point .row2 .list {
  display: flex;
  justify-content: center;
  gap: 2vw;
}
#point .row3 .desc {
  box-sizing: border-box;
  padding: 0 4%;
  margin-top: 10vw;
  position: relative;
  z-index: 1;
}

@media only screen and (min-width: 768px) {
  #point {
    padding: 196px 0 0;
  }
  #point::before {
    width: 1427px;
    top: -6px;
    left: -150px;
    right: 0;
  }
  #point h2 {
    width: 311px;
    margin: 0 auto 51px;
  }
  #point h3 {
    margin-bottom: 26px;
  }
  #point .txt-first {
    text-align: center;
    margin-bottom: 137px;
  }
  #point .row1 {
    display: flex;
    margin-left: -230px;
    margin-right: -118px;
    margin-bottom: 142px;
  }
  #point .row1::before {
    right: calc(50% - 50vw - 48px);
    left: calc(50% - 57px);
    top: 163px;
    bottom: 136px;
  }
  #point .row1 .img {
    margin-bottom: 0;
  }
  #point .row1 .img .photo1 {
    margin-bottom: 69px;
  }
  #point .row1 .img .photo2 {
    width: 654px;
  }
  #point .row1 .desc {
    width: 490px;
    margin-left: auto;
    margin-top: 73px;
  }
  #point .row1 .desc h4 {
    text-align: left;
    margin-left: auto;
    margin-right: 20px;
    margin-bottom: 112px;
    white-space: nowrap;
  }
  #point .row1 .desc .txt {
    width: 400px;
    margin-left: auto;
    margin-right: 18px;
    letter-spacing: 0.05em;
    margin-bottom: 84px;
  }
  #point .row2 {
    margin-bottom: 140px;
    margin-left: -100px;
    margin-right: -218px;
  }
  #point .row2::before {
    left: calc(50% - 50vw - 52px);
    right: calc(50% - 338px);
    top: 84px;
    bottom: 140px;
  }
  #point .row2 .flex-pc {
    display: flex;
    justify-content: space-between;
    flex-direction: row-reverse;
    margin-bottom: 92px;
  }
  #point .row2 .flex-pc .img {
    margin-bottom: 0;
  }
  #point .row2 .flex-pc .desc {
    margin-top: 47px;
    width: 400px;
    flex-shrink: 0;
    margin-right: 40px;
  }
  #point .row2 .flex-pc .desc h4 {
    margin: 0 auto 56px;
    text-align: left;
    white-space: nowrap;
  }
  #point .row2 .flex-pc .desc .txt {
    letter-spacing: 0.05em;
  }
  #point .row2 .list {
    justify-content: flex-start;
    gap: 40px;
  }
  #point .row3 .desc {
    width: 370px;
    padding: 0;
    margin-top: 0;
    position: absolute;
    top: calc(50% + 50px);
    right: 144px;
    transform: translateY(-50%);
  }
  #point .row3 .desc h4 {
    text-shadow: unset;
    margin-bottom: 36px;
    color:#fff;
  }
  #point .row3 .desc .txt {
    color: #fff;
    letter-spacing: 0.05em;
  }
}

#message {
  padding: 10vw 0 20vw;
  background: url(../img/shared/main_bg.jpg) repeat;
}
#message .row1 {
  margin-bottom: 12vw;
  position: relative;
  z-index: 1;
}
#message .row1 .deco1 {
  width: 57.9vw;
  position: absolute;
  top: -18vw;
  right: 0;
  z-index: -1;
}
#message .row1 .img {
  margin-bottom: 6vw;
}
#message .row1 .desc h2 {
  line-height: 1.6em;
}
#message .row2 {
  background: radial-gradient(at left top, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.3));
  padding: 10vw 6vw 15vw;
  box-sizing: border-box;
  position: relative;
  z-index: 1;
}
#message .row2::before, #message .row2::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 30vw;
  border: 1px solid #8b7e68;
}
#message .row2::before {
  top: 0;
  right: 0;
  border-left: none;
  border-bottom: none;
}
#message .row2::after {
  border-right: none;
  border-top: none;
  left: 0;
  bottom: 0;
}
#message .row2 .deco2 {
  width: 10.3vw;
  position: absolute;
  bottom: 1vw;
  left: 3vw;
  z-index: -1;
}
#message .row2 .img {
  margin-bottom: 8vw;
}
#message .row2 .desc h3 {
  font-size: 5.5vw;
  font-weight: 400;
  font-family: var(--ship);
  letter-spacing: 0.15em;
  line-height: 1.8em;
  color: #000;
  margin-bottom: 5vw;
}
@media only screen and (min-width: 768px) {
  #message {
    padding: 136px 0 163px;
  }
  #message .wrap {
    width: 100%;
    max-width: 1330px;
    padding: 0 30px;
    margin: 0 auto;
  }
  #message .row1 {
    display: flex;
    justify-content: space-between;
    margin-left: 4px;
    margin-right: 40px;
    margin-bottom: 120px;
  }
  #message .row1 .deco1 {
    width: 343px;
    top: -131px;
    right: -135px;
  }
  #message .row1 .img {
    margin-bottom: 0;
  }
  #message .row1 .desc {
    margin-top: 136px;
    width: 445px;
    flex-shrink: 0;
    margin-left: 40px;
  }
  #message .row1 .desc h2 {
    line-height: 56px;
    margin-bottom: 37px;
  }
  #message .row1 .desc .txt {
    letter-spacing: 0.05em;
  }
  #message .row2 {
    background: radial-gradient(at right bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.3));
    padding: 70px 80px;
    display: flex;
    flex-direction: row-reverse;
    gap: 77px;
  }
  #message .row2::before, #message .row2::after {
    width: 23.046566693%;
    height: 100%;
  }
  #message .row2::before {
    border-left: none;
    border-top: none;
    border-bottom: 1px solid #8b7e68;
  }
  #message .row2::after {
    border-right: none;
    border-top: 1px solid #8b7e68;
    border-bottom: none;
  }
  #message .row2 .deco2 {
    width: 61px;
    bottom: 41px;
    left: 62px;
  }
  #message .row2 .img {
    margin-bottom: 0;
  }
  #message .row2 .desc {
    display: flex;
    flex-direction: row-reverse;
    margin-top: 41px;
    gap: 47px;
  }
  #message .row2 .desc h3 {
    font-size: 26px;
    line-height: 50px;
    margin-bottom: 0;
    white-space: nowrap;
  }
  #message .row2 .desc .txt {
    line-height: 40px;
    letter-spacing: 0.15em;
    width: 440px;
    height: 370px;
  }
}

@media screen and (min-width: 768px) and (max-width: 1260px) {
  #point .row1 {
    margin-right: -40px;
  }
  #point .row1::before {
    right: calc(50% - 50vw - 87px);
  }
  #point .row2 {
    margin-left: 0px;
  }
  #point .row2::before {
    left: calc(50% - 50vw - 102px);
  }
  #point .row2 .list {
    margin-right: 218px;
  }
  #message .row2 {
    gap: 30px;
  }
}