#sec1 {
  padding: 10vw 0 30vw;
  background: url(../img/course/sec1_deco1.png) no-repeat right top 10vw/60%,
    url(../img/index/sec1_deco2.png) no-repeat left 15px bottom/40px;
  position: relative;
}
#sec1::after {
  content: "";
  background: #3f536a;
  height: calc(100% - 90px);
  top: 0;
  left: 9px;
  width: 1px;
  position: absolute;
  z-index: -5;
}
#sec1::before {
  content: "";
  top: -10vw;
  right: -5vw;
  bottom: 0;
  left: -5vw;
  position: absolute;
  border: 1px solid #3f536a;
  border-radius: 100vw;
  z-index: -5;
}
#sec1 .ttl {
  margin-top: 15vw;
  padding-left: 5vw;
}
#sec1 .ttl .desc {
  color: #927719;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
#sec1 .ttl h2 {
  margin-bottom: 30px;
}
#sec1 .txt {
  padding-left: 5vw;
  margin-bottom: 50px;
  padding-right: 5%;
}
#sec1 .txt span {
  display: block;
  margin-bottom: 20px;
}
#sec1 .deco-line {
  border-top: 1px solid #3f536a;
}

@media screen and (min-width: 768px) {
  #sec1 {
    padding: 190px 0 345px;
    background: url(../img/course/sec1_deco1.png) no-repeat right top 100px /
        auto,
      url(../img/index/sec1_deco2.png) no-repeat right calc(50% + 435px) bottom -55px /
        auto;
    position: relative;
  }
  #sec1::after {
    height: 100%;
    left: calc(50% - 487px);
  }
  #sec1::before {
    top: -170px;
    right: auto;
    bottom: auto;
    left: calc(50% + 100px);
    transform: translateX(-50%);
    width: 1500px;
    height: 1500px;
  }
  #sec1 .ttl {
    display: flex;
    flex-direction: row-reverse;
    width: -moz-max-content;
    width: max-content;
    margin-left: 150px;
    gap: 0 20px;
    margin-top: auto;
    padding-left: 0;
  }
  #sec1 .ttl .desc {
    letter-spacing: 3px;
    writing-mode: vertical-rl;
  }
  #sec1 .ttl h2 {
    writing-mode: vertical-rl;
    height: -moz-max-content;
    height: max-content;
    letter-spacing: 9px;
  }
  #sec1 .txt {
    margin-bottom: 130px;
    width: 580px;
    margin-left: auto;
    margin-top: -150px;
    letter-spacing: 4.7px;
    padding-left: 0;
    padding-right: 0;
  }
  #sec1 .txt span {
    margin-bottom: 40px;
  }
  #sec1 .deco-line {
    border-top: 1px solid #3f536a;
  }
}
#sec2 .bg-parallax::after {
  content: "";
  background: url(../img/scene/sec4_para_deco.png) no-repeat 0 0/100%;
  width: 35%;
  height: 30vw;
  right: -1px;
  top: -1px;
  position: absolute;
}
#sec2 .bg-parallax .desc-para {
  position: absolute;
  left: 10px;
  bottom: 10px;
  text-shadow: 1px 1px 5px #000;
}
#sec2 .sec2-content {
  padding: 10vw 0 15vw;
  background: url(../img/index/sec1_deco1.png) no-repeat right 5px top/40px,
    url(../img/index/sec1_deco2.png) no-repeat left 15px bottom 185vw/40px,
    url(../img/course/sec2_deco1.png) no-repeat left top 18%/60%,
    url(../img/course/sec2_deco_goll1.png) no-repeat right top 15%/100%,
    url(../img/course/sec2_deco2.png) no-repeat right top 37%/50%,
    url(../img/course/sec2_deco_gold2.png) no-repeat left bottom 30%/50%,
    url(../img/course/sec2_deco_gold3.png) no-repeat right bottom/70%;
  border-bottom: 1px solid #2a425b;
  position: relative;
}
#sec2 .sec2-content::after {
  content: "";
  background: #2a425b;
  width: 1px;
  height: 100%;
  right: 10px;
  top: 0;
  position: absolute;
  z-index: -1;
}
#sec2 .sec2-content::before {
  content: "";
  background: #2a425b;
  width: 1px;
  height: 70%;
  left: 10px;
  top: 0;
  position: absolute;
  z-index: -1;
}
#sec2 .sec2-content .deco-circle-1::before {
  content: "";
  width: 110vw;
  height: 150vw;
  border: 1px solid #223d5a;
  border-radius: 100vw;
  left: 50%;
  top: -5vw;
  transform: translateX(-50%);
  position: absolute;
  z-index: -1;
}
#sec2 .sec2-content .deco-circle-2::before {
  content: "";
  width: 110vw;
  height: 110vw;
  border: 1px solid #223d5a;
  border-radius: 100vw;
  left: 70%;
  top: 130vw;
  transform: translateX(-50%);
  position: absolute;
  z-index: -1;
}
#sec2 .sec2-content .ttl {
  text-align: center;
}
#sec2 .sec2-content .ttl .desc-1 {
  letter-spacing: 3px;
  color: #927719;
  margin-bottom: 3vw;
}
#sec2 .sec2-content .ttl .price {
  margin-bottom: 5vw;
  letter-spacing: 2px;
}
#sec2 .sec2-content .ttl .desc-2 {
  margin-bottom: 10vw;
}
#sec2 .sec2-content .list {
  display: flex;
  justify-content: center;
  padding: 10vw 0;
  border: 1px solid #acb1b7;
  margin-bottom: 20vw;
  position: relative;
}
#sec2 .sec2-content .list::after {
  content: "";
  background: #d0d0d0;
  height: 50px;
  width: 3px;
  top: 50%;
  transform: translateY(-50%);
  right: -2px;
  position: absolute;
}
#sec2 .sec2-content .list li {
  writing-mode: vertical-rl;
  letter-spacing: 2px;
}
#sec2 .sec2-content .group-photo-1 {
  width: 80%;
  margin-left: auto;
  margin-bottom: 30px;
}
#sec2 .sec2-content .group-photo-1 .photo-1 {
  margin-bottom: 15px;
  margin-right: -5.5vw;
}
#sec2 .sec2-content .group-photo-1 .photo-2 {
  width: 70%;
}
#sec2 .sec2-content .group-photo-2 {
  margin-bottom: 30px;
}
#sec2 .sec2-content .group-photo-2 .photo-3 {
  width: 40%;
  margin-bottom: 15px;
}
#sec2 .sec2-content .group-photo-2 .photo-4 {
  margin-bottom: 15px;
}
#sec2 .sec2-content .group-photo-2 ul {
  width: 80%;
  margin-left: auto;
}
#sec2 .sec2-content .group-photo-2 ul .photo-5 {
  margin-bottom: 15px;
}
#sec2 .sec2-content .group-photo-2 ul .photo-6 {
  width: 55%;
}
#sec2 .sec2-content .group-photo-3 .photo-8 {
  width: 80%;
  margin-bottom: 15px;
}

@media screen and (min-width: 768px) {
  #sec2 .bg-parallax {
    height: 800px;
  }
  #sec2 .bg-parallax::after {
    width: 297px;
    height: 275px;
  }
  #sec2 .bg-parallax .desc-para {
    left: 30px;
    bottom: 10px;
  }
  #sec2 .sec2-content {
    padding: 165px 0 135px;
    background: url(../img/index/sec1_deco1.png) no-repeat right
        calc(50% - 607px) top/auto,
      url(../img/index/sec1_deco2.png) no-repeat left calc(50% - 562px) bottom
        1185px / auto,
      url(../img/course/sec2_deco1.png) no-repeat left top 950px / auto,
      url(../img/course/sec2_deco_goll1.png) no-repeat right calc(50% - 280px)
        top 1250px / auto,
      url(../img/course/sec2_deco2.png) no-repeat right top 1870px / auto,
      url(../img/course/sec2_deco_gold2.png) no-repeat left calc(50% - 500px)
        bottom 735px / auto,
      url(../img/course/sec2_deco_gold3.png) no-repeat right calc(50% - 435px)
        bottom/auto,
      url(../img/course/sec2_deco3.png) no-repeat left calc(50% + 215px) bottom
        755px / auto;
    border-bottom: none;
  }
  #sec2 .sec2-content::after {
    height: calc(100% - 535px);
    right: calc(50% - 635px);
  }
  #sec2 .sec2-content::before {
    height: 2285px;
    left: calc(50% - 615px);
  }
  #sec2 .sec2-content .deco-circle-1::before {
    width: 1520px;
    height: 1520px;
    top: 20px;
  }
  #sec2 .sec2-content .deco-circle-2::before {
    width: 1380px;
    height: 1380px;
    left: calc(50% + 450px);
    top: 1405px;
  }
  #sec2 .sec2-content .deco-line-1 {
    border-top: 1px solid #223d5a;
    position: absolute;
    width: 100%;
    top: 870px;
    left: 0;
    z-index: -1;
  }
  #sec2 .sec2-content .deco-line-2 {
    border-top: 1px solid #223d5a;
    position: absolute;
    width: 100%;
    top: 1670px;
    left: 0;
    z-index: -1;
  }
  #sec2 .sec2-content .deco-line-3 {
    border-top: 1px solid #223d5a;
    position: absolute;
    width: 100%;
    bottom: 535px;
    left: 0;
    z-index: -1;
  }
  #sec2 .sec2-content .ttl .desc-1 {
    letter-spacing: 4px;
    margin-bottom: 30px;
  }
  #sec2 .sec2-content .ttl .price {
    margin-bottom: 30px;
    letter-spacing: 5px;
    font-size: 20px;
  }
  #sec2 .sec2-content .ttl .price small {
    font-size: 18px;
  }
  #sec2 .sec2-content .ttl .desc-2 {
    margin-bottom: 110px;
    letter-spacing: 5px;
  }
  #sec2 .sec2-content .list {
    width: 750px;
    padding: 75px 0 80px;
    margin: 0 auto 170px;
  }
  #sec2 .sec2-content .list::after {
    height: 100px;
    width: 3px;
    right: -2px;
  }
  #sec2 .sec2-content .list li {
    letter-spacing: 6px;
    margin: 0 5px;
    height: -moz-max-content;
    height: max-content;
  }
  #sec2 .sec2-content .group-photo-1 {
    width: 100%;
    margin-left: 0;
    margin-bottom: 95px;
  }
  #sec2 .sec2-content .group-photo-1 .photo-1 {
    margin-bottom: 15px;
    margin-right: -140px;
    order: 2;
  }
  #sec2 .sec2-content .group-photo-1 .photo-2 {
    width: -moz-max-content;
    width: max-content;
    order: 1;
    margin-left: -50px;
    margin-top: 155px;
  }
  #sec2 .sec2-content .group-photo-2 {
    margin-bottom: 185px;
    gap: 0 10px;
  }
  #sec2 .sec2-content .group-photo-2 .photo-3 {
    width: -moz-max-content;
    width: max-content;
    margin-left: -100px;
    margin-bottom: 15px;
  }
  #sec2 .sec2-content .group-photo-2 .photo-4 {
    margin-bottom: 0;
    margin-top: 60px;
  }
  #sec2 .sec2-content .group-photo-2 ul {
    width: -moz-max-content;
    width: max-content;
    margin-left: auto;
    margin-right: -105px;
    margin-bottom: -95px;
    align-self: flex-end;
  }
  #sec2 .sec2-content .group-photo-2 ul .photo-5 {
    margin-bottom: 15px;
  }
  #sec2 .sec2-content .group-photo-2 ul .photo-6 {
    width: 55%;
  }
  #sec2 .sec2-content .group-photo-3 .photo-8 {
    order: 2;
    width: -moz-max-content;
    width: max-content;
    margin-bottom: 15px;
    margin-right: -75px;
    margin-top: 185px;
  }
  #sec2 .sec2-content .group-photo-3 .photo-7 {
    order: 1;
    margin-left: -70px;
  }
}
#sec3 {
  padding: 10vw 0;
}
#sec3 .box-1 {
  background: #4f667f;
  padding: 40px 20px;
  border: 15px solid #7a8b9c;
  margin-bottom: 40px;
}
#sec3 .box-1 .row .col-right {
  margin-bottom: 20px;
}
#sec3 .box-1 .row .col-right h2 {
  margin-bottom: 8vw;
  font-size: 4.5vw;
  position: relative;
  width: -moz-max-content;
  width: max-content;
}
#sec3 .box-1 .row .col-right h2::after {
  content: "";
  background: #fff;
  height: 1px;
  width: 100%;
  bottom: 0;
  right: 0;
  position: absolute;
}
#sec3 .box-1 .row .col-right h3 {
  font-size: 5vw;
  margin-bottom: 2vw;
}
#sec3 .box-1 .row .col-right .price {
  margin-bottom: 30px;
  letter-spacing: 2px;
}
#sec3 .box-2 {
  border: 1px solid #d0d0d0;
  text-align: center;
  padding: 35px 15px;
  position: relative;
}
#sec3 .box-2::after {
  content: "";
  background: #fff;
  height: 3px;
  width: 90px;
  top: -2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
#sec3 .box-2 .desc-1 {
  letter-spacing: 2px;
  width: -moz-max-content;
  width: max-content;
  border: 1px solid #fff;
  padding: 0 20px;
  margin: 0 auto 20px;
}
#sec3 .box-2 h3 {
  margin-bottom: 7vw;
}
#sec3 .box-2 .desc-2 {
  margin-bottom: 20px;
}
#sec3 .box-2 .box-desc-1 {
  margin-bottom: 30px;
  font-size: 13px;
  line-height: 30px;
}
#sec3 .box-2 .box-desc-2 {
  text-decoration: underline;
  margin-bottom: 30px;
}
#sec3 .box-2 .phone-t2 {
  border-top: 1px solid #62615d;
  border-bottom: 1px solid #62615d;
  padding: 10px 0;
  margin-bottom: 30px;
}
#sec3 .box-2 .phone-t2 .phone-desc {
  font-size: 13px;
}

@media screen and (min-width: 768px) {
  #sec3 {
    padding: 0 0 240px;
  }
  #sec3 .wrap {
    max-width: 1200px;
  }
  #sec3 .box-1 {
    padding: 80px 20px;
    border: 40px solid #7a8b9c;
    box-sizing: border-box;
    margin-bottom: 175px;
  }
  #sec3 .box-1 .row {
    max-width: 1000px;
    margin: 0 auto;
  }
  #sec3 .box-1 .row .col-right {
    order: 2;
    margin: 55px 40px 0 0;
  }
  #sec3 .box-1 .row .col-right h2 {
    margin-bottom: 75px;
    font-size: 25px;
  }
  #sec3 .box-1 .row .col-right h2::after {
    width: 110%;
    bottom: 12px;
  }
  #sec3 .box-1 .row .col-right h3 {
    font-size: 25px;
    margin-bottom: 5px;
    letter-spacing: 8px;
  }
  #sec3 .box-1 .row .col-right .price {
    margin-bottom: 35px;
    letter-spacing: 6px;
    font-size: 20px;
  }
  #sec3 .box-1 .row .col-right .price small {
    font-size: 18px;
  }
  #sec3 .box-1 .row .col-right .txt {
    letter-spacing: 4.6px;
  }
  #sec3 .box-1 .row .col-left {
    order: 1;
  }
  #sec3 .box-2 {
    padding: 80px 25px 55px;
    max-width: 1000px;
    margin: 0 auto;
    box-sizing: border-box;
  }
  #sec3 .box-2::after {
    content: "";
    background: #fff;
    height: 3px;
    width: 90px;
    top: -2px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  #sec3 .box-2 .desc-1 {
    letter-spacing: 5px;
    margin-bottom: 15px;
  }
  #sec3 .box-2 h3 {
    margin-bottom: 65px;
    letter-spacing: 7px;
  }
  #sec3 .box-2 .desc-2 {
    letter-spacing: 5px;
    margin-bottom: 65px;
  }
  #sec3 .box-2 .box-desc-1 {
    margin-bottom: 70px;
    letter-spacing: 4.7px;
    font-size: 16px;
    line-height: 40px;
  }
  #sec3 .box-2 .box-desc-2 {
    line-height: 30px;
    letter-spacing: 4px;
    margin-bottom: 65px;
  }
  #sec3 .box-2 .phone-t2 {
    padding: 15px 0 20px;
    width: 550px;
    margin: 0 auto 40px;
  }
  #sec3 .box-2 .phone-t2 .phone-desc-1 {
    font-size: 16px;
    letter-spacing: 2.4px;
    margin-bottom: 8px;
  }
  #sec3 .box-2 .phone-t2 .phone-desc-2 {
    line-height: 30px;
    margin-bottom: 15px;
  }
  #sec3 .box-2 .phone-t2 .phone-desc-2 span {
    font-size: 20px;
  }
}
#sec4 {
  padding: 15vw 0;
  background: url(../img/course/sec4_deco_gold1.png) no-repeat center top/100%,
    url(../img/course/sec4_deco1.png) no-repeat right 16px bottom 12%/50px,
    url(../img/shared/pt2.jpg);
  color: #333333;
  position: relative;
}
#sec4::before {
  content: "";
  background: #c3b6ae;
  height: 86.5%;
  left: 10px;
  width: 1px;
  top: 0;
  position: absolute;
}
#sec4::after {
  content: "";
  background: #c3b6ae;
  height: 100%;
  right: 10px;
  width: 1px;
  top: 0;
  position: absolute;
}
#sec4 .deco-circle::before {
  content: "";
  width: 98vw;
  height: 98vw;
  border: 1px solid #c3b6ae;
  border-radius: 100vw;
  left: 50%;
  top: 5vw;
  transform: translateX(-50%);
  position: absolute;
}
#sec4 .deco-line-1 {
  border-top: 1px solid #c3b6ae;
  position: absolute;
  width: 100%;
  top: 10vw;
  left: 0;
}
#sec4 h2 {
  position: relative;
  width: -moz-max-content;
  width: max-content;
  margin: 15vw auto 10vw;
}
#sec4 h2 span {
  display: block;
  writing-mode: vertical-rl;
  margin: 0 auto;
}
#sec4 h2 small {
  font-size: 3vw;
  position: absolute;
  left: 10vw;
  top: 3vw;
  color: #927719;
}
#sec4 .sec4-slide {
  width: 90%;
  margin: 0 auto 30px;
}
#sec4 .sec4-slide .slider-nav-2 {
  margin-bottom: 2vw;
}
#sec4 .sec4-slide .slider-nav-2 .slick-list {
  padding: 0 !important;
}
#sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track {
  width: 100% !important;
  display: flex;
  justify-content: space-between;
  transform: translate3d(0, 0, 0) !important;
}
#sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track .slick-slide {
  width: 32% !important;
  height: 25vw;
  filter: grayscale(1);
  border: 1px solid #997d21;
}
#sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track .slick-slide img {
  height: 25vw;
  -o-object-fit: cover;
  object-fit: cover;
}
#sec4
  .sec4-slide
  .slider-nav-2
  .slick-list
  .slick-track
  .slick-slide.slick-current {
  filter: grayscale(0);
}
#sec4 .sec4-slide .slider-for-2 {
  padding: 0 1vw;
}
#sec4 .box-content {
  background: url(../img/course/sec4_bg_border.jpg);
  padding: 40px 50px;
  position: relative;
  width: 90%;
  margin: 0 auto 55px;
  box-sizing: border-box;
}
#sec4 .box-content::before {
  content: "";
  top: 20px;
  right: 20px;
  bottom: 20px;
  left: 20px;
  background: url(../img/course/sec4_pt1.png);
  position: absolute;
}
#sec4 .box-content h3 span {
  display: block;
}
#sec4 .box-content h3 span:first-child {
  margin-bottom: 3vw;
  letter-spacing: 2px;
}
#sec4 .box-content h3 span:last-child {
  font-size: 18px;
  letter-spacing: 3px;
  margin-bottom: 20px;
}
#sec4 .box-content .txt span {
  display: block;
}
#sec4 .box-content .txt span:first-child {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid #d5d2d0;
}
#sec4 .box-content .sub-desc {
  position: absolute;
  bottom: -40px;
  left: 10px;
}
#sec4 .deco-line-2 {
  border-top: 1px solid #c3b6ae;
  margin-bottom: 30px;
}
#sec4 .box-price {
  border: 1px solid #806b5f;
  padding: 20px;
  text-align: center;
  width: 85%;
  margin: 0 auto;
  position: relative;
  box-sizing: border-box;
}
#sec4 .box-price::after {
  content: "";
  width: 100px;
  height: 3px;
  background: #806b5f;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  left: 50%;
  top: -2px;
}

@media screen and (min-width: 768px) {
  #sec4 {
    padding: 220px 0 0;
    background: url(../img/course/sec4_deco_gold1.png) no-repeat center top
        180px / auto,
      url(../img/course/sec4_deco1.png) no-repeat right calc(50% - 602px) bottom
        500px / auto,
      url(../img/shared/pt2.jpg);
    z-index: 0;
  }
  #sec4::before {
    height: calc(100% - 355px);
    left: calc(50% - 545px);
  }
  #sec4::after {
    height: calc(100% + 150px);
    right: calc(50% - 550px);
    z-index: -1;
  }
  #sec4 .deco-circle::before {
    width: 1380px;
    height: 1320px;
    top: 50px;
  }
  #sec4 .deco-line-1 {
    top: 85px;
  }
  #sec4 h2 {
    margin: 0 auto 105px;
  }
  #sec4 h2 span {
    margin: 0 auto;
  }
  #sec4 h2 small {
    font-size: 16px;
    left: 75px;
    top: 10px;
    letter-spacing: 4px;
  }
  #sec4 .sec4-slide {
    width: calc(100% - 50px);
    max-width: 1450px;
    margin: 0 auto 30px;
    position: relative;
  }
  #sec4 .sec4-slide .slider-nav-2 {
    margin-bottom: 0;
    position: absolute;
    right: 0;
    bottom: -150px;
    z-index: 9;
  }
  #sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track {
    width: 72% !important;
    margin:0 0 0 auto;
  }
  #sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track .slick-slide {
    width: 100% !important;
    height: 100px;
    margin-left: 8px;
  }
  #sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track .slick-slide img {
    height: 100px;
  }
  #sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track .slick-slide:hover {
    cursor: pointer;
    opacity: 0.7;
  }
  #sec4
    .sec4-slide
    .slider-nav-2
    .slick-list
    .slick-track
    .slick-slide.slick-current {
    filter: grayscale(0);
  }
  #sec4 .sec4-slide .slider-for-2 {
    padding: 0;
    height: 880px;
  }
  #sec4 .sec4-slide .slider-for-2 img {
    height: 880px;
    -o-object-fit: cover;
    object-fit: cover;
  }
  #sec4 .container {
    width: calc(100% - 50px);
    max-width: 1450px;
    margin: 0 auto 30px;
  }
  #sec4 .box-content {
    padding: 85px 70px 40px;
    width: 825px;
    margin: -220px 0 70px 30px;
    display: flex;
    flex-direction: row-reverse;
  }
  #sec4 .box-content::before {
    top: 30px;
    right: 30px;
    bottom: 30px;
    left: 30px;
  }
  #sec4 .box-content h3 {
    margin-right: 5px;
    margin-left: 15px;
  }
  #sec4 .box-content h3 span:first-child {
    letter-spacing: 8px;
    height: -moz-max-content;
    height: max-content;
    writing-mode: vertical-lr;
    margin: 0 auto 20px;
  }
  #sec4 .box-content h3 span:last-child {
    font-size: 20px;
    letter-spacing: 5px;
  }
  #sec4 .box-content h3 span:last-child small {
    font-size: 18px;
  }
  #sec4 .box-content .txt {
    display: flex;
    flex-direction: row-reverse;
  }
  #sec4 .box-content .txt span {
    writing-mode: vertical-rl;
    text-align: left;
    letter-spacing: 5px;
    height: -moz-max-content;
    height: max-content;
  }
  #sec4 .box-content .txt span:first-child {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: none;
    margin-left: 40px;
    padding-left: 40px;
    position: relative;
  }
  #sec4 .box-content .txt span:first-child::after {
    content: "";
    width: 1px;
    height: 310px;
    background: #d0cecb;
    left: -10px;
    top: -10px;
    position: absolute;
  }
  #sec4 .box-content .sub-desc {
    bottom: 210px;
    left: auto;
    right: -270px;
    letter-spacing: 4px;
  }
  #sec4 .deco-line-2 {
    margin-bottom: 110px;
  }
  #sec4 .box-price {
    width: 855px;
    padding: 70px 20px 50px;
  }
  #sec4 .box-price::after {
    content: "";
    width: 100px;
    height: 3px;
    background: #806b5f;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    left: 50%;
    top: -2px;
  }
  #sec4 .box-price p {
    font-size: 25px;
    line-height: 60px;
    letter-spacing: 6px;
  }
  #sec4 .box-price p small {
    font-size: 20px;
  }
}
#sec5 {
  padding: 0 0 30vw;
  position: relative;
  background: url(../img/index/sec1_deco2.png) no-repeat left 10px bottom/40px;
}
#sec5::after {
  content: "";
  background: #3f556d;
  width: 100%;
  height: 1px;
  left: 0;
  bottom: 20vw;
  position: absolute;
}
#sec5::before {
  content: "";
  background: url(../img/course/sec5_deco_top.png) no-repeat center top/100%;
  width: 100%;
  height: 50vw;
  left: 0;
  top: 0;
  position: absolute;
  z-index: 9;
}
#sec5 .deco-circle::before {
  content: "";
  width: 100vw;
  height: 100vw;
  left: -10vw;
  bottom: 15vw;
  position: absolute;
  border: 1px solid #3f556d;
  border-radius: 100vw;
}
#sec5 .bg-parallax {
  width: 90%;
  margin: 0 auto 30px;
}
#sec5 .row .col-right {
  margin-bottom: 30px;
}
#sec5 .row .col-right .ttl {
  margin: 0 auto 10vw;
  width: -moz-max-content;
  width: max-content;
}
#sec5 .row .col-right .ttl .desc {
  color: #927719;
  letter-spacing: 2px;
  margin-bottom: 20px;
}
#sec5 .row .col-right .ttl h2 {
  writing-mode: vertical-rl;
}
#sec5 .row .col-right .txt {
  padding-top: 30px;
  border-top: 1px solid #3a4858;
  padding: 11vw 5%;
}
#sec5 .row .col-left {
  pointer-events: none;
}

@media screen and (min-width: 768px) {
  #sec5 {
    padding: 0 0 320px;
    background: url(../img/index/sec1_deco2.png) no-repeat left
      calc(50% - 595px) bottom 55px / auto;
  }
  #sec5::after {
    bottom: 250px;
  }
  #sec5::before {
    content: "";
    background: url(../img/course/sec5_deco_top.png) no-repeat center top/100%;
    width: 100%;
    height: 50vw;
    left: 0;
    top: 0;
    position: absolute;
    z-index: 9;
  }
  #sec5 .deco-circle::before {
    width: 1420px;
    height: 1420px;
    left: calc(50% - 85px);
    bottom: 80px;
    transform: translateX(-50%);
    z-index: -1;
  }
  #sec5 .bg-parallax {
    width: calc(100% - 100px);
    height: 850px;
    margin: 0 auto;
  }
  #sec5 .row .col-right {
    margin-bottom: 30px;
    order: 2;
    margin-top: 120px;
    width: 280px;
  }
  #sec5 .row .col-right .ttl {
    margin: 0 auto 100px;
  }
  #sec5 .row .col-right .ttl .desc {
    letter-spacing: 2px;
    margin-bottom: 40px;
  }
  #sec5 .row .col-right .ttl h2 {
    writing-mode: vertical-rl;
    height: -moz-max-content;
    height: max-content;
  }
  #sec5 .row .col-right .txt {
    padding-top: 30px;
    border-top: 1px solid #3a4858;
    writing-mode: vertical-rl;
    letter-spacing: 5.5px;
    padding: 75px 25px 0;
    height: -moz-max-content;
    height: max-content;
  }
  #sec5 .row .col-left {
    order: 1;
    margin: -40px 0 0 -50px;
  }
  #sec5 .row .col-left .photo-1 {
    margin-bottom: 20px;
  }
  #sec5 .row .col-left .photo-2 {
    margin-left: -100px;
  }
}
#sec6 {
  padding: 15vw 0;
}
#sec6 .box {
  border: 1px solid #d0d0d0;
  text-align: center;
  padding: 35px 20px;
  position: relative;
}
#sec6 .box::after {
  content: "";
  background: #fff;
  height: 3px;
  width: 90px;
  top: -2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
#sec6 .box .desc-1 {
  color: #927719;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
#sec6 .box h3 {
  margin-bottom: 7vw;
}
#sec6 .box .desc-2 {
  margin-bottom: 20px;
}
#sec6 .box .desc-3 {
  margin-bottom: 5px;
}
#sec6 .box .box-desc {
  margin-bottom: 30px;
  font-size: 13px;
  line-height: 30px;
}
#sec6 .box .phone-t2 {
  border-top: 1px solid #62615d;
  border-bottom: 1px solid #62615d;
  padding: 10px 0;
  margin-bottom: 30px;
}
#sec6 .box .phone-t2 .phone-desc {
  font-size: 13px;
}
#sec6 .box .btn-web a {
  margin: 0 auto;
}

@media screen and (min-width: 768px) {
  #sec6 {
    padding: 100px 0 195px;
  }
  #sec6 .box {
    padding: 70px 25px 100px;
  }
  #sec6 .box::after {
    content: "";
    background: #fff;
    height: 3px;
    width: 90px;
    top: -2px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  #sec6 .box .desc-1 {
    letter-spacing: 5px;
    margin-bottom: 15px;
  }
  #sec6 .box h3 {
    margin-bottom: 30px;
    letter-spacing: 7px;
  }
  #sec6 .box .desc-2 {
    letter-spacing: 5px;
    margin-bottom: 65px;
  }
  #sec6 .box .box-desc {
    margin-bottom: 90px;
    letter-spacing: 4.7px;
    font-size: 16px;
  }
  #sec6 .box .desc-3 {
    letter-spacing: 5px;
  }
  #sec6 .box .phone-t2 {
    padding: 15px 0 20px;
    width: 550px;
    margin: 0 auto 40px;
  }
  #sec6 .box .phone-t2 .phone-desc-1 {
    font-size: 16px;
    letter-spacing: 2.4px;
    margin-bottom: 8px;
  }
  #sec6 .box .phone-t2 .phone-desc-2 {
    line-height: 30px;
    margin-bottom: 15px;
  }
  #sec6 .box .phone-t2 .phone-desc-2 span {
    font-size: 20px;
  }
  #sec6 .box .btn-web a {
    width: 285px;
    padding: 8px;
  }
}
@media (min-width: 768px) and (max-width: 1300px) {
  #sec3 .box-1 .row .col-left {
    width: 470px;
  }
  #sec5 .row .col-left {
    margin: -40px 0 0 30px;
  }
  #sec4 .box-content {
    margin: -220px 0 70px 10px;
    width: 675px;
    padding: 85px 15px 40px;
  }
  #sec4 .box-content .sub-desc {
    letter-spacing: 1px;
    right: -210px;
  }
  #sec4 .sec4-slide .slider-nav-2 .slick-list .slick-track {
    width: 350px!important;
  }
      #sec4 .box-content .txt span {
        line-height: 35px;
      }
          #sec4 .box-content h3 {
            margin-right: 15px;
          }


} /*# sourceMappingURL=course.css.map */