/*==================================
  Top
==================================*/
body {
  position: relative;
}
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88.4%;
  height: 128vw;
  background: url("../images/top/sp/key_deco_sp.png") no-repeat top right/100% auto;
}

main {
  overflow: hidden;
  position: relative;
  z-index: 2;
  padding-top: 0;
  padding-bottom: 0;
}

#key {
  padding: 84px 0 0;
}
#key .key-ttl {
  width: 313.5px;
  max-width: 100%;
  margin: 0 auto 16px;
}
#key .group-img {
  position: relative;
}
#key .group-img .images {
  display: flex;
}
#key .group-img .images .img {
  overflow: hidden;
  border-radius: 24px;
  transition: 0.5s all cubic-bezier(0, 0, 0.2, 1);
  opacity: 0;
  transform: scale(0.5);
}
#key .group-img .images.is-active .img {
  opacity: 1;
  transform: scale(1);
}
#key .group-img .images01 {
  gap: 4vw;
  margin: 0 -2.13vw 0 -4.8vw;
}
#key .group-img .images01 .images-left, #key .group-img .images01 .images-right {
  display: flex;
  flex-direction: column;
  gap: 3.2vw;
  justify-content: space-between;
}
#key .group-img .images02 {
  position: absolute;
  left: -4.267vw;
  right: -4.8vw;
  top: 0;
  gap: 2.4vw;
}
#key .group-img .images02 .images-left, #key .group-img .images02 .images-right {
  display: flex;
  flex-direction: column;
  gap: 2.2vw;
  justify-content: space-between;
}

#about .set1 {
  position: relative;
  z-index: 2;
  padding: 78px 0 0;
}
#about .set1 .deco {
  position: absolute;
  width: 216px;
  top: 38px;
  left: calc(50% + 17px);
}
#about .set1 .group-img {
  position: relative;
}
#about .set1 .group-img .img {
  border-radius: 30px;
  overflow: hidden;
}
#about .set1 .group-img .deco2 {
  position: absolute;
  width: 70px;
  left: -10px;
  bottom: -25.5px;
}
#about .set1 .group-content {
  margin: 0 24px 30px;
}
#about .set1 .group-content .ttl-en {
  font-size: 20px;
}
#about .set1 .group-content .ttl-common {
  font-size: 22px;
  margin: 10px -10px 25px 0;
}
#about .set1 .group-content .txt {
  text-align: justify;
  letter-spacing: 0.08em;
}
#about .set2 {
  margin: 65px 0 0;
  padding: 0 0 152px;
  background: url("../images/top/sp/lesson_bg_top_sp.png") no-repeat bottom center/100% auto;
}
#about .set2 .list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
#about .set2 .list .item {
  width: 100%;
  background: #fff;
  position: relative;
  padding: 30px 0 33px;
  text-align: center;
  border-radius: 34px;
}
#about .set2 .list .item .icon1 {
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: 65px;
  top: -12px;
}
#about .set2 .list .item .icon2 {
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: 32px;
  top: -14px;
}
#about .set2 .list .item .icon3 {
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: 48px;
  top: -15px;
}
#about .set2 .list .item .ttl-en {
  font-size: 12px;
}
#about .set2 .list .item .txt {
  margin: 20px 10px 22px;
}
#about .set2 .list .item .btn-link {
  margin: 0 auto;
  max-width: calc(100% - 30px);
}

#lesson {
  position: relative;
  z-index: 4;
  margin: -10px 0 -15px;
  padding: 33px 0 30px;
  background: #00bcef;
}
#lesson .deco {
  position: absolute;
  top: -30px;
  left: 31px;
  width: 75.5px;
}
#lesson .group-ttl {
  margin: 0 0 35px;
  text-align: center;
}
#lesson .group-ttl .ttl-en, #lesson .group-ttl .ttl-common {
  color: #fff;
}
#lesson .group-ttl .ttl-en {
  font-size: 12px;
}
#lesson .group-ttl .ttl-common {
  margin: 7px 0 0;
}
#lesson .lesson-js {
  position: relative;
}
#lesson .lesson-js .lesson-item {
  width: 253px;
  margin: 0 17px 0 0;
}
#lesson .lesson-js .lesson-item a {
  background: #fef9e2;
  border-radius: 14px;
  display: block;
  text-decoration: none;
  padding: 26.5px 26.5px 22px;
  color: #021211;
}
#lesson .lesson-js .lesson-item a .img {
  overflow: hidden;
  border-radius: 14px;
}
#lesson .lesson-js .lesson-item a .time {
  font-weight: 700;
  font-size: 11.5px;
  line-height: 1.5;
  margin: 15px 0;
  letter-spacing: 0.08em;
  word-break: break-all;
  overflow-wrap: break-word;
}
#lesson .lesson-js .lesson-item a .title {
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 13px;
  word-break: break-all;
  overflow-wrap: break-word;
}
#lesson .lesson-js .lesson-item a .tag {
  margin: 15px 0 0;
}
#lesson .lesson-js .lesson-item a .tag span {
  display: inline-block;
  font-size: 10px;
  line-height: 1.5;
  padding: 6.5px 17px;
  letter-spacing: 0.08em;
  border-radius: 8.5px;
}
#lesson .lesson-js .lesson-item a .tag.cl1 span {
  background-color: #faadad;
}
#lesson .lesson-js .lesson-item a .tag.cl2 span {
  background-color: #fe9c33;
}
#lesson .lesson-js .lesson-item a .tag.cl3 span {
  background-color: #77e459;
}
#lesson .lesson-js .lesson-item a .tag.cl4 span {
  background-color: #ffd428;
}
#lesson .lesson-js .swiper-button-next, #lesson .lesson-js .swiper-button-prev {
  width: 47px;
  cursor: pointer;
  position: absolute;
  bottom: -72px;
  transform: none;
  top: auto;
  margin: 0;
  height: 47px;
  line-height: 0;
}
#lesson .lesson-js .swiper-button-next[aria-disabled=true], #lesson .lesson-js .swiper-button-prev[aria-disabled=true] {
  opacity: 0.5;
  cursor: context-menu;
}
#lesson .lesson-js .swiper-button-next span, #lesson .lesson-js .swiper-button-prev span {
  width: 100%;
  height: 47px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
}
#lesson .lesson-js .swiper-button-next span img, #lesson .lesson-js .swiper-button-prev span img {
  width: 15px;
}
#lesson .lesson-js .swiper-button-next:after, #lesson .lesson-js .swiper-button-prev:after {
  display: none;
}
#lesson .lesson-js .swiper-button-next {
  left: 57px;
}
#lesson .lesson-js .swiper-button-prev {
  left: 0;
}
#lesson .lesson-js .swiper-pagination {
  position: absolute;
  bottom: -53px;
  top: auto;
  left: 148px;
  display: flex;
  gap: 9px;
}
#lesson .lesson-js .swiper-pagination .swiper-pagination-bullet {
  margin: 0;
  width: 10px;
  height: 10px;
  box-sizing: border-box;
  border: 1px solid #fff;
  background: transparent;
  opacity: 1;
}
#lesson .lesson-js .swiper-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active {
  background: #fff;
}
#lesson .btn-link {
  margin: 119px auto 0;
}

#news {
  padding: 122px 0 60px;
  position: relative;
  background: url("../images/top/sp/lesson_bg_bottom_sp.png") no-repeat top center/100% auto;
}
#news .deco {
  position: absolute;
  z-index: 2;
  top: 55px;
  right: 27px;
  width: 70.5px;
}
#news .deco2 {
  position: absolute;
  z-index: 2;
  top: 115px;
  left: 53px;
  width: 50px;
}
#news .group-ttl {
  text-align: center;
  margin: 0 0 28px;
}
#news .list-news .item {
  border-bottom: 2px dotted #94b5db;
}
#news .list-news .item a {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 29px 20px 29px 0;
}
#news .list-news .item a .date {
  font-weight: 700;
  font-size: 13px;
  color: #718298;
  line-height: 25px;
  width: 108.5px;
  letter-spacing: 0;
}
#news .list-news .item a .cate {
  width: 120px;
  color: #fff;
  text-align: center;
  font-weight: 700;
  font-size: 12px;
  line-height: 25px;
  background: #00bcef;
  border-radius: 2px;
  letter-spacing: 0;
}
#news .list-news .item a .title {
  width: 100%;
  margin: 15px 0 0;
  letter-spacing: 0.08em;
}
#news .list-news .item:first-child {
  border-top: 2px dotted #94b5db;
}
#news .btn-link {
  margin: 60px auto 0;
}