header .burger-btn:not(.active) {
  pointer-events: all;
}

.burger-btn {
  display: none;
}
@media screen and (max-width: 768px) {
  .burger-btn {
    display: block;
  }
}

@media screen and (max-width: 768px) {
  main section.kv .inner .kv_txt {
    width: 49rem;
    top: 46%;
  }
  main section.kv .inner .kv_video {
    top: 74rem;
    right: 10vw;
  }
  .header_menu {
    padding-bottom: 0;
    height: 9.6rem;
  }
  header .burger-btn {
    width: 12rem;
    position: absolute;
    opacity: 1;
    z-index: 999;
  }
  .header_nav {
    background: linear-gradient(#006cff, #2da0ff);
  }
  .header_nav .header_nav_inner {
    padding: 15rem 4rem 20rem;
    position: relative;
  }
  .header_nav .header_nav_inner::after {
    content: "";
    display: inline-block;
    background-image: url(/kids/assets/img/swim/header_img01.png);
    background-size: contain;
    background-repeat: no-repeat;
    width: 13.7rem;
    height: 9rem;
    position: absolute;
    bottom: 13rem;
    right: 5rem;
  }
  .header_nav .hum_ttl {
    width: 53.5rem;
    display: block;
    margin: 0 auto 5rem;
  }
  .header_nav .header_nav_list > li {
    background: none;
    font-size: 4rem;
    text-align: center;
    padding: 5rem 0;
    font-weight: bold;
  }
  .header_nav .header_nav_list > li + li {
    border-top: 4px dotted #fff;
  }
  .fv_buttons {
    flex-wrap: wrap;
  }
  .fv_buttons > li {
    width: calc((100% - 2px) / 3);
    margin-left: 0 !important;
  }
  .fv_buttons > li:nth-child(n+4) {
    margin-top: 1px;
  }
}
main .kv {
  position: relative;
  background-color: #006cff;
}
main .kv .inner {
  max-width: 1920px;
  margin: 0 auto;
  position: relative;
}
main .kv .inner .kv_bg {
  opacity: 0;
  transition: 2s;
}
main .kv .inner .kv_bg.on {
  opacity: 1;
}
@media screen and (max-width: 768px) {
  main .kv .inner .kv_bg {
    opacity: 1;
  }
}
main .kv .inner .kv_video {
  display: none;
  position: absolute;
  bottom: 5vw;
  right: 2vw;
}
main .kv .inner .kv_video .video_close {
  width: 3rem;
  height: 3rem;
  position: absolute;
  top: 10%;
  right: 5%;
  z-index: 1;
  max-width: 288px;
  max-height: 288px;
}
@media screen and (max-width: 768px) {
  main .kv .inner .kv_video {
    top: 82.667vw;
    right: 2.667vw;
  }
  main .kv .inner .kv_video .video_close {
    width: 5rem;
    height: 5rem;
    right: -2%;
    top: 5%;
  }
}
main .kv .inner .video-modal {
  position: relative;
  width: 15vw;
  height: 15vw;
  min-height: 180px;
  min-width: 180px;
  max-width: 288px;
  max-height: 288px;
  border-radius: 50%;
  overflow: hidden;
  transition: border-radius 0.25s, width 0.5s, height 0.5s, top 0.5s, right 0.5s;
  transition-delay: 0.25s, 0s, 0s, 0s, 0s;
  z-index: 1;
}
@media screen and (max-width: 768px) {
  main .kv .inner .video-modal {
    width: 29.334vw;
    height: 29.334vw;
    min-height: auto;
    min-width: auto;
  }
}
main .kv .inner .video-modal.is-active {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100vh;
  max-width: 100%;
  max-height: 100%;
  min-height: auto;
  min-width: auto;
  background-color: rgba(0, 0, 0, 0.75);
  border-radius: 0;
  z-index: 10;
}
main .kv .inner .video-modal.is-active .close-btn {
  position: absolute;
  top: -70px;
  right: 0;
  width: 54px;
  height: 54px;
  z-index: 50;
  cursor: pointer;
}
main .kv .inner .video-modal.is-active .close-btn::before, main .kv .inner .video-modal.is-active .close-btn::after {
  content: "";
  display: block;
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%) rotate(45deg);
  background-color: #fff;
}
main .kv .inner .video-modal.is-active .close-btn::after {
  transform: rotate(135deg);
}
main .kv .inner .video-modal.is-active .thumbnail {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  cursor: default;
}
main .kv .inner .video-modal.is-active .thumbnail::before {
  display: none;
}
main .kv .inner .video-modal.is-active .thumbnail::after {
  display: none;
}
main .kv .inner .video-modal.is-active .thumbnail .video-wrap {
  position: relative;
  width: 80%;
}
@media screen and (min-width: 769px) {
  main .kv .inner .video-modal.is-active .thumbnail .video-wrap {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  main .kv .inner .video-modal.is-active .thumbnail .video-wrap .close-btn {
    position: relative;
    top: 0;
    margin: 0 0 16px auto;
  }
}
@media screen and (max-width: 768px) {
  main .kv .inner .video-modal.is-active .thumbnail .video-wrap {
    height: auto;
  }
}
main .kv .inner .video-modal.is-active .thumbnail .video-container {
  position: relative;
  z-index: 20;
}
@media screen and (min-width: 769px) {
  main .kv .inner .video-modal.is-active .thumbnail .video-container {
    height: 45vw;
    max-height: calc(100vh - 70px);
  }
}
@media screen and (max-width: 768px) {
  main .kv .inner .video-modal.is-active .thumbnail .video-container {
    padding-top: 56.25%;
    width: 100%;
    height: 0;
  }
}
main .kv .inner .video-modal.is-active .thumbnail .thumbnail-yt {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: scale(1);
}
main .kv .inner .video-modal .thumbnail {
  display: inline-block;
  position: relative;
  width: 100%;
  height: 100%;
  cursor: pointer;
  transition: opacity 0.5s;
  z-index: 10;
}
main .kv .inner .video-modal .video-wrap {
  width: 100%;
  height: 100%;
}
main .kv .inner .video-modal .video-container {
  position: relative;
  width: 100%;
  height: 100%;
}
main .kv .inner .video-modal .thumbnail-yt {
  position: relative;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 178%;
  height: 100%;
  transform: translate(-50%, -50%);
  z-index: -1;
}
main .kv .inner .kv_txt {
  display: none;
  position: absolute;
  left: 0;
  width: 26vw;
  top: 42%;
}
main .kv .unc_nav {
  position: absolute;
  bottom: -7%;
  left: 50%;
  transform: translateX(-50%);
}
main .kv .unc_nav ul {
  background-color: #fff;
  border-radius: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 2;
  max-width: 1140px;
  width: 114rem;
  margin: auto;
}
main .kv .unc_nav ul li {
  font-size: 1.6rem;
  margin: 1rem 0;
  list-style: none;
  color: #013b6b;
}
main .kv .unc_nav ul li + li {
  border-left: 2px dotted #dcdcdc;
  padding-left: 2rem;
  margin-left: 2rem;
}
main .kv .unc_nav ul li + li a {
  padding: 2rem 0;
  display: block;
}
main .kv.lower {
  background-color: #fff;
  position: relative;
}
main .kv.lower .unc_nav {
  position: relative;
  bottom: auto;
  box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.3019607843);
}
main .kv.lower::before, main .kv.lower::after {
  content: "";
  display: inline-block;
  position: absolute;
  background-repeat: no-repeat;
  background-size: contain;
  width: 30.2rem;
  height: 8.8rem;
  background-image: url(/kids/assets/img/swim/flag_sp.png);
  top: 7.5rem;
}
main .kv.lower::before {
  left: 0;
}
main .kv.lower::after {
  right: 0;
  transform: scale(-1, 1);
}
@media screen and (max-width: 768px) {
  main .kv.lower {
    display: none;
  }
}
main .main_section .main_lead {
  border-radius: 0 0 10rem 10rem;
  text-align: center;
  font-size: 1.8rem;
  line-height: 4.8rem;
  font-weight: bold;
  background: linear-gradient(#006cff, #2da0ff);
  color: #fff;
  padding: 10rem 0 7rem;
}
@media screen and (max-width: 768px) {
  main .main_section .main_lead {
    font-size: 3rem;
    line-height: 7.2rem;
    padding: 10rem 0;
  }
}
main .main_section .content_wrap {
  padding-top: 12rem;
}
main .main_section .content_wrap .ttl {
  text-align: center;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .ttl {
    padding-bottom: 8rem;
  }
}
main .main_section .content_wrap .ttl img {
  margin: auto;
}
main .main_section .content_wrap .ttl p {
  font-size: 1.6rem;
  line-height: 2.8rem;
  margin-top: 5rem;
  font-weight: bold;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .ttl p {
    font-size: 3.2rem;
    line-height: 6rem;
    width: 59rem;
    margin: 5rem auto 0;
    text-align: left;
  }
}
main .main_section .content_wrap .btn_detail {
  background-color: #ff9b0b;
  width: 20rem;
  color: #fff;
  font-size: 1.6rem;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 5rem;
  border-radius: 5rem;
  margin: 4rem auto 0;
  text-align: center;
}
main .main_section .content_wrap .btn_detail.col01 {
  background-color: #86e200;
}
main .main_section .content_wrap .btn_detail + .btn_detail {
  margin-top: 2rem;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .btn_detail {
    width: 40rem;
    height: 10rem;
    font-size: 3rem;
  }
}
main .main_section .content_wrap .content_box {
  padding: 10rem 0 8rem;
  background-color: #c5e5ff;
  position: relative;
  margin: 16rem 0;
}
main .main_section .content_wrap .content_box::before, main .main_section .content_wrap .content_box::after {
  content: "";
  display: inline-block;
  position: absolute;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100%;
  height: 10.2vw;
}
main .main_section .content_wrap .content_box::before {
  background-image: url(/kids/assets/img/swim/bg_top.png);
  top: -10vw;
  left: 0;
}
main .main_section .content_wrap .content_box::after {
  background-image: url(/kids/assets/img/swim/bg_bottom.png);
  bottom: -10vw;
  left: 0;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .content_box::before, main .main_section .content_wrap .content_box::after {
    height: 11.7rem;
  }
  main .main_section .content_wrap .content_box::before {
    background-image: url(/kids/assets/img/swim/bg_top_sp.png);
    top: -11.6rem;
  }
  main .main_section .content_wrap .content_box::after {
    background-image: url(/kids/assets/img/swim/bg_bottom_sp.png);
    bottom: -11.6rem;
  }
}
main .main_section .content_wrap .content_box .flex_box {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}
main .main_section .content_wrap .content_box .flex_box > div {
  position: relative;
  width: 30rem;
  background-color: #fff;
  border-radius: 3rem;
  text-align: center;
  padding: 6rem 3rem;
}
main .main_section .content_wrap .content_box .flex_box > div + div {
  margin-left: 3rem;
}
main .main_section .content_wrap .content_box .flex_box > div .num {
  height: 7.5rem;
  width: auto;
  position: absolute;
  top: -4rem;
  left: 50%;
  transform: translateX(-50%);
}
main .main_section .content_wrap .content_box .flex_box > div .content_box_ttl {
  font-size: 3rem;
  line-height: 4.5rem;
  font-weight: bold;
  color: #006cff;
}
main .main_section .content_wrap .content_box .flex_box > div .content_box_txt {
  font-size: 1.6rem;
  line-height: 3.2rem;
  font-weight: bold;
  text-align: left;
  margin-top: 3rem;
}
main .main_section .content_wrap .content_box .flex_box > div .content_box_txt .video .recommend_video_item {
  margin-top: 2rem;
}
main .main_section .content_wrap .content_box .flex_box > div .content_box_txt .video .btn-video01::after {
  content: none;
}
main .main_section .content_wrap .content_box .flex_box .open_btn {
  position: relative;
  width: 8rem;
  margin: 5rem auto;
}
main .main_section .content_wrap .content_box .flex_box .open_btn img {
  position: absolute;
  top: 0;
  left: 0;
}
main .main_section .content_wrap .content_box .flex_box .open_btn .open {
  width: 8.2rem;
}
main .main_section .content_wrap .content_box .flex_box .open_btn .close {
  width: 9.8rem;
}
main .main_section .content_wrap .content_box .flex_box .hide {
  display: none;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .content_box .flex_box {
    display: block;
  }
  main .main_section .content_wrap .content_box .flex_box > div {
    width: 59rem;
    margin: auto;
    padding: 12rem 6rem;
  }
  main .main_section .content_wrap .content_box .flex_box > div + div {
    margin: 12rem auto 0;
  }
  main .main_section .content_wrap .content_box .flex_box > div .num {
    height: 14.7rem;
    top: -8rem;
  }
  main .main_section .content_wrap .content_box .flex_box > div .content_box_ttl {
    font-size: 6rem;
    line-height: 9rem;
    margin-top: 5rem;
  }
  main .main_section .content_wrap .content_box .flex_box > div .content_box_txt {
    font-size: 2.6rem;
    line-height: 5.6rem;
  }
  main .main_section .content_wrap .content_box .flex_box .open_btn {
    width: 15rem;
  }
  main .main_section .content_wrap .content_box .flex_box .open_btn .open {
    width: 14rem;
  }
  main .main_section .content_wrap .content_box .flex_box .open_btn .close {
    width: 16.9rem;
  }
}
main .main_section .content_wrap .content_box01 {
  position: relative;
}
main .main_section .content_wrap .content_box01::before, main .main_section .content_wrap .content_box01::after {
  content: "";
  display: inline-block;
  position: absolute;
  background-repeat: no-repeat;
  background-size: cover;
  width: 63rem;
  height: 5.3rem;
}
main .main_section .content_wrap .content_box01::before {
  background-image: url(/kids/assets/img/swim/flag01.png);
  top: -12rem;
  left: -6rem;
}
main .main_section .content_wrap .content_box01::after {
  background-image: url(/kids/assets/img/swim/flag01.png);
  top: -12rem;
  right: -6rem;
  transform: scale(-1, 1);
}
main .main_section .content_wrap .content_box01 .flex_box {
  justify-content: center;
  display: flex;
  align-items: flex-start;
  max-width: 1000px;
  width: 100rem;
  margin: 15rem auto 0;
}
main .main_section .content_wrap .content_box01 .flex_box .content_box_ttl {
  font-size: 3.6rem;
  line-height: 6rem;
  color: #006cff;
}
main .main_section .content_wrap .content_box01 .flex_box .content_box_ttl span {
  background: linear-gradient(transparent 70%, #c5e5ff 70%);
}
main .main_section .content_wrap .content_box01 .flex_box .content_box_txt {
  font-size: 1.6rem;
  line-height: 3.2rem;
  margin-top: 3rem;
  width: 38rem;
}
main .main_section .content_wrap .content_box01 .flex_box img {
  width: 51.6rem;
  margin-left: 5rem;
}
@media screen and (max-width: 768px) {
  main .main_section .content_wrap .content_box01::before, main .main_section .content_wrap .content_box01::after {
    background-image: url(/kids/assets/img/swim/flag_sp.png);
    width: 30.2rem;
    height: 8.8rem;
    top: -10rem;
  }
  main .main_section .content_wrap .content_box01::before {
    left: -12rem;
  }
  main .main_section .content_wrap .content_box01::after {
    right: -12rem;
  }
  main .main_section .content_wrap .content_box01 .flex_box {
    display: block;
    width: 59rem;
  }
  main .main_section .content_wrap .content_box01 .flex_box .content_box_ttl {
    text-align: center;
    font-size: 5rem;
    line-height: 8rem;
  }
  main .main_section .content_wrap .content_box01 .flex_box .content_box_txt {
    font-size: 3.2rem;
    line-height: 6rem;
    width: 100%;
    margin-top: 6rem;
  }
  main .main_section .content_wrap .content_box01 .flex_box img {
    width: 50.6rem;
    margin: 5rem auto 0;
    display: block;
  }
  main .main_section .content_wrap .content_box01 .btn_detail {
    margin-top: 6rem;
  }
}
main .main_section #reason .ttl img {
  width: 33.5rem;
}
@media screen and (max-width: 768px) {
  main .main_section #reason .ttl img {
    width: 46rem;
  }
}
main .main_section #system .ttl img {
  width: 43.1rem;
}
@media screen and (max-width: 768px) {
  main .main_section #system .ttl img {
    width: 50.9rem;
  }
}
main .main_section #system .flex_box > div {
  height: 18.5rem;
}
main .main_section #system .flex_box > div .content_box_ttl {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
}
main .main_section #system .flex_box > div .btn_detail {
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
}
@media screen and (max-width: 768px) {
  main .main_section #system .flex_box > div {
    height: auto;
    width: 62rem;
    padding: 5rem 0;
  }
  main .main_section #system .flex_box > div .content_box_ttl, main .main_section #system .flex_box > div .btn_detail {
    position: relative;
    top: auto;
    left: auto;
    transform: translate(0);
  }
}
main .main_section #course_list .ttl img {
  width: 52.7rem;
}
main .main_section #course_list .content_box .flex_box > div {
  background: none;
  padding: 0;
  width: 36rem;
}
main .main_section #course_list .content_box .flex_box > div .js_acc {
  background-color: #fff;
  border-radius: 0 0 3rem 3rem;
  padding: 4rem 3rem 6rem;
}
main .main_section #course_list .content_box .flex_box > div .js_acc .content_box_ttl span {
  font-size: 2.2rem;
}
@media screen and (max-width: 768px) {
  main .main_section #course_list .ttl img {
    width: 45.3rem;
  }
  main .main_section #course_list .content_box .flex_box > div {
    width: 59rem;
  }
  main .main_section #course_list .content_box .flex_box > div .js_acc {
    padding: 2rem 3rem 8rem;
  }
  main .main_section #course_list .content_box .flex_box > div .js_acc .content_box_ttl span {
    font-size: 4rem;
  }
  main .main_section #course_list .content_box.sp_unique .flex_box > div {
    position: relative;
  }
  main .main_section #course_list .content_box.sp_unique .flex_box > div::after, main .main_section #course_list .content_box.sp_unique .flex_box > div::before {
    content: "";
    display: inline-block;
    position: absolute;
    background-repeat: no-repeat;
    background-size: cover;
    width: 32rem;
    height: 11rem;
    top: -2rem;
  }
  main .main_section #course_list .content_box.sp_unique .flex_box > div::before {
    background-image: url(/kids/assets/img/swim/flag_sp01.png);
    left: -20rem;
  }
  main .main_section #course_list .content_box.sp_unique .flex_box > div::after {
    background-image: url(/kids/assets/img/swim/flag_sp02.png);
    right: -20rem;
  }
}
main .main_section #effect .ttl img {
  width: 28.5rem;
}
@media screen and (max-width: 768px) {
  main .main_section #effect .ttl img {
    width: 43.2rem;
  }
}
main .main_section #faculties .ttl img {
  width: 43rem;
}
@media screen and (max-width: 768px) {
  main .main_section #faculties .ttl img {
    width: 59.2rem;
  }
}
main .main_section #faculties .siz01 {
  width: 126.7rem;
  margin: auto;
  display: block;
}
@media screen and (max-width: 768px) {
  main .main_section #faculties .content_box01 .flex_box img {
    width: 100%;
  }
  main .main_section #faculties .siz01 {
    margin-top: 20rem;
  }
}
main .main_section #target {
  background-position: center top;
  background-repeat: repeat-y;
}
@media screen and (min-width: 769px) {
  main .main_section #target {
    background-image: url(../img/swim/bg02.png);
    background-size: 100% auto;
    padding-bottom: 14rem;
  }
}
@media screen and (min-width: 769px) and (min-width:1500px) {
  main .main_section #target {
    background-size: 1500px auto;
  }
}
@media screen and (max-width: 768px) {
  main .main_section #target {
    background-image: url(../img/swim/bg02_sp.png);
    background-size: 100% auto;
    padding-top: 6rem;
    padding-bottom: 10rem;
  }
}
main .main_section #target h3 {
  letter-spacing: 0.05em;
  line-height: 1.1;
  font-weight: bold;
  text-align: center;
  color: #006cff;
}
@media screen and (min-width: 769px) {
  main .main_section #target h3 {
    font-size: 4rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section #target h3 {
    font-size: 7.2rem;
  }
}
main .main_section #target h3 span {
  font-size: 0.65em;
}
main .main_section #target figure {
  margin: 0 auto;
  line-height: 0;
}
@media screen and (min-width: 769px) {
  main .main_section #target figure {
    width: 65.4rem;
    padding-top: 8rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section #target figure {
    width: 67.8rem;
    padding-top: 2rem;
  }
}
main .main_section #target h4 {
  letter-spacing: 0.05em;
  line-height: 1.5;
  font-weight: bold;
  text-align: center;
  color: #006cff;
}
@media screen and (min-width: 769px) {
  main .main_section #target h4 {
    padding-top: 7rem;
    font-size: 2.2rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section #target h4 {
    padding-top: 6rem;
    font-size: 4.8rem;
  }
}
main .main_section #target p {
  margin: 0 auto;
  letter-spacing: 0.05em;
  font-weight: bold;
}
@media screen and (min-width: 769px) {
  main .main_section #target p {
    padding-top: 1rem;
    line-height: 2;
    font-size: 1.6rem;
    text-align: center;
  }
}
@media screen and (max-width: 768px) {
  main .main_section #target p {
    width: 59rem;
    padding-top: 4rem;
    line-height: 1.875;
    font-size: 3.2rem;
    text-align: justify;
  }
}
main .main_section #qa {
  margin-bottom: 30rem;
  padding-top: 14rem;
}
@media screen and (max-width: 768px) {
  main .main_section #qa {
    padding-top: 20rem;
  }
}
main .main_section #qa .ttl img {
  width: 21.1rem;
}
@media screen and (max-width: 768px) {
  main .main_section #qa .ttl img {
    width: 35.6rem;
  }
}
main .main_section #qa .content_box .js_acc {
  font-weight: bold;
  width: 63.8rem;
  margin: auto;
  border: 2px dotted #2da0ff;
  background-color: #fff;
  border-radius: 1.5rem;
  position: relative;
}
main .main_section #qa .content_box .js_acc::after {
  content: "";
  display: inline-block;
  border-top: 0.2rem solid #c5e5ff;
  border-right: 0.2rem solid #c5e5ff;
  width: 1rem;
  height: 1rem;
  right: 3rem;
  position: absolute;
  bottom: 3rem;
  transform: rotate(135deg);
}
main .main_section #qa .content_box .js_acc.on::after {
  transform: rotate(-45deg);
}
main .main_section #qa .content_box .js_acc + .js_acc {
  margin-top: 2rem;
}
main .main_section #qa .content_box .js_acc .qa_ttl {
  font-size: 1.8rem;
  line-height: 3rem;
  padding: 2rem 7rem 2rem 8rem;
  position: relative;
}
main .main_section #qa .content_box .js_acc .qa_ttl::before {
  content: "";
  display: inline-block;
  width: 4.2rem;
  height: 3.2rem;
  background-image: url(/kids/assets/img/swim/question.png);
  background-repeat: no-repeat;
  background-size: contain;
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
}
main .main_section #qa .content_box .js_acc .qa_txt {
  font-size: 1.4rem;
  line-height: 2.6rem;
  padding-top: 3rem;
  padding-left: 5rem;
  margin: 0 4rem 4rem 8rem;
  border-top: 1px solid #dcdcdc;
  display: none;
}
@media screen and (max-width: 768px) {
  main .main_section #qa .content_box .js_acc::after {
    border-top: 0.5rem solid #c5e5ff;
    border-right: 0.5rem solid #c5e5ff;
    width: 1.5rem;
    height: 1.5rem;
    bottom: 3.5rem;
  }
  main .main_section #qa .content_box .js_acc .qa_ttl {
    font-size: 2.6rem;
    line-height: 5rem;
    padding: 2rem 7rem 2rem 10rem;
  }
  main .main_section #qa .content_box .js_acc .qa_ttl::before {
    width: 5.6rem;
    height: 4.3rem;
  }
  main .main_section #qa .content_box .js_acc .qa_txt {
    font-size: 2.2rem;
    line-height: 4.4rem;
  }
}
main .main_section.emotional .ttl img {
  width: 52.4rem;
}
main .main_section.emotional .prev_arrow_btn {
  margin-bottom: 12rem;
}
main .main_section.emotional .content_box {
  margin: 12vw 0 17vw;
}
@media screen and (max-width: 768px) {
  main .main_section.emotional .ttl img {
    width: 67rem;
  }
  main .main_section.emotional .ttl p {
    margin-top: 10rem;
  }
  main .main_section.emotional .content_box {
    margin: 12vw 0 30vw;
  }
}
main .main_section.challenge .ttl img {
  width: 50.4rem;
}
main .main_section.challenge .prev_arrow_btn {
  margin-bottom: 12rem;
}
main .main_section.challenge .content_box {
  margin: 12vw 0 17vw;
  text-align: center;
}
main .main_section.challenge .content_box .lead02 {
  font-size: 3rem;
  line-height: 4.5rem;
  font-weight: bold;
  color: #006cff;
  display: inline-block;
  margin-top: 6rem;
  background: linear-gradient(transparent 70%, #fff 70%);
}
main .main_section.challenge .content_box .lead03 {
  margin-top: 4rem;
  font-size: 1.6rem;
  line-height: 3.2rem;
  font-weight: bold;
}
main .main_section.challenge .content_box .content_box_item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #fff;
  width: 114rem;
  margin: 10rem auto 0;
  border-radius: 3rem;
}
main .main_section.challenge .content_box .content_box_item .content_box_ttl {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ff940b;
  color: #fff;
  line-height: 1.429em;
  font-size: 3.2rem;
  font-weight: bold;
  padding: 1.3rem 5rem;
  border-radius: 0 0 3rem 3rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box {
  position: relative;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item01::after {
  content: "";
  display: inline-block;
  width: 40.9rem;
  height: 21.8rem;
  background-image: url(/kids/assets/img/swim/challenge/img08.png);
  background-repeat: no-repeat;
  background-size: contain;
  position: absolute;
  right: -3rem;
  bottom: -5rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item01 > div:first-of-type {
  border-right: 2px dotted #006cff;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div {
  text-align: left;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div .lead04 {
  color: #006cff;
  font-size: 2.6rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div .lead05 {
  color: #006cff;
  font-size: 2.2rem;
  margin-top: 3rem;
  background: linear-gradient(transparent 70%, #c5e5ff 70%);
  display: inline-block;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div .txt_small {
  font-size: 1.4rem;
  line-height: 2.6rem;
  margin-top: 3rem;
  width: 75%;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div .course {
  font-size: 2.2rem;
  font-weight: bold;
  display: block;
  margin-top: 3rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div .course span {
  font-size: 2rem;
  color: #fff;
  background-color: #006cff;
  padding: 0.2rem 2rem;
  border-radius: 1rem;
  margin-right: 2rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item03 {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  width: 100%;
}
@media screen and (min-width: 769px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 {
    padding: 3.2rem 0 4.5rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 {
    padding: 2.4rem 0 5rem;
  }
}
main .main_section.challenge .content_box .content_box_item .flex_box.item03 .img02 {
  position: absolute;
  width: 20rem;
  left: 6.3rem;
  top: -3.7rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item03 .img01 {
  width: 49.3rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead04 {
  line-height: 1;
  color: #006cff;
  font-weight: bold;
}
@media screen and (min-width: 769px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead04 {
    padding-top: 3rem;
    font-size: 2.6rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead04 {
    padding-top: 2rem;
    font-size: 3.5rem;
  }
}
main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead01 {
  font-weight: bold;
}
@media screen and (min-width: 769px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead01 {
    padding-top: 1.5rem;
    line-height: 2.046em;
    font-size: 2.2rem;
    text-align: center;
  }
}
@media screen and (max-width: 768px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .lead01 {
    width: 51rem;
    padding-top: 2rem;
    line-height: 1.8em;
    font-size: 2rem;
    text-align: justify;
  }
}
@media screen and (min-width: 769px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .btns {
    padding: 4rem 0 1rem;
  }
}
@media screen and (max-width: 768px) {
  main .main_section.challenge .content_box .content_box_item .flex_box.item03 .btns {
    padding: 4rem 0 0.5rem;
  }
}
main .main_section.challenge .content_box .content_box_item .flex_box > div {
  width: auto;
  border-radius: 0;
  margin: 6rem 0;
  padding: 0;
  width: 47%;
}
main .main_section.challenge .content_box .content_box_item .flex_box > div img {
  width: 40.9rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box > div img + img {
  margin-top: 5rem;
}
main .main_section.challenge .content_box .content_box_item .flex_box > div + div {
  width: 53%;
}
main .main_section.challenge .content_box .content_box_item .flex_box > div + div img {
  width: 47rem;
}
@media screen and (max-width: 768px) {
  main .main_section.challenge .ttl img {
    width: 67rem;
  }
  main .main_section.challenge .content_box {
    margin: 12vw 0 30vw;
  }
  main .main_section.challenge .content_box .lead01, main .main_section.challenge .content_box .lead02 {
    font-size: 4rem;
    line-height: 6rem;
    background: none;
  }
  main .main_section.challenge .content_box .lead01::before, main .main_section.challenge .content_box .lead02::before {
    left: -5rem;
  }
  main .main_section.challenge .content_box .lead01::after, main .main_section.challenge .content_box .lead02::after {
    right: -5rem;
  }
  main .main_section.challenge .content_box .lead01 .under_bar, main .main_section.challenge .content_box .lead02 .under_bar {
    display: inline-block;
    background: linear-gradient(transparent 70%, rgba(255, 255, 255, 0.7) 70%);
  }
  main .main_section.challenge .content_box .lead03 {
    font-size: 3.2rem;
    line-height: 6rem;
    width: 59rem;
    text-align: left;
    margin: 6rem auto 0;
  }
  main .main_section.challenge .content_box .content_box_item {
    width: 62rem;
    border-radius: 5rem;
  }
  main .main_section.challenge .content_box .content_box_item .content_box_ttl {
    min-height: 7rem;
    padding: 0.8rem 5rem;
    font-size: 3.5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box {
    padding-bottom: 2rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box > div {
    width: 52.6rem;
    margin: 6rem auto;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box > div + div {
    width: 52.6rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box > div + div img {
    width: 100%;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item01::after {
    content: none;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item01 > div img {
    width: 100%;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item01 > div img + img {
    border-top: 2px dotted #006cff;
    padding-top: 5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item01 > div img.sp1 {
    border-top: none;
    padding-top: 0;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item01 > div:first-of-type {
    border-right: none;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div {
    text-align: center;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .lead04 {
    font-size: 3.5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .lead05 {
    font-size: 2.8rem;
    line-height: 5rem;
    background: none;
    margin-top: 5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .lead05 .under_bar {
    display: inline-block;
    background: linear-gradient(transparent 70%, #c5e5ff 70%);
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .txt_small {
    font-size: 2rem;
    line-height: 3.6rem;
    width: 100%;
    text-align: left;
    margin-top: 5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .course {
    font-size: 2.6rem;
    margin-top: 5rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .course + .course {
    margin-top: 3rem;
  }
  main .main_section.challenge .content_box .content_box_item .flex_box.item02 > div + div .course span {
    font-size: 2.6rem;
  }
}
main .main_section.operation .ttl img {
  width: 52.4rem;
}
main .main_section.operation .content_box {
  text-align: center;
}
main .main_section.operation .content_box .flex_box {
  margin-top: 5rem;
}
main .main_section.operation .content_box .flex_box .content_bg {
  background-image: url(/kids/assets/img/swim/operation/bg01.png);
  background-size: contain;
  background-repeat: no-repeat;
  background-color: unset;
  width: 36rem;
  height: 66.1rem;
  padding: 0;
  border-radius: 0;
}
main .main_section.operation .content_box .flex_box .content_bg .inner {
  padding: 5rem 2.5rem;
}
main .main_section.operation .content_box .flex_box .content_bg .img01 {
  width: 17.6rem;
}
main .main_section.operation .content_box .flex_box .content_bg .img02 {
  width: 13.8rem;
}
main .main_section.operation .content_box .flex_box .content_bg .img03 {
  width: 26rem;
}
main .main_section.operation .content_box .flex_box .content_bg p {
  text-align: left;
}
main .main_section.operation .content_box .flex_box .content_bg .lead02 {
  font-size: 1.6rem;
  line-height: 3.2rem;
  font-weight: bold;
  margin-top: 3rem;
}
main .main_section.operation .content_box .flex_box .content_bg .txt_small {
  font-size: 1.4rem;
  line-height: 2.6rem;
  margin-top: 3rem;
}
main .main_section.operation .lead01 {
  font-size: 3.4rem;
  color: #2da7ff;
  text-align: center;
  border-bottom: 3px solid #2da7ff;
  display: inline-block;
  padding-bottom: 1rem;
}
main .main_section.operation .content_wrap .content_box {
  margin-bottom: 35vw;
}
main .main_section.operation .content_wrap .content_box::after {
  background-image: url(/kids/assets/img/swim/operation/img04.png);
  bottom: -29.5vw;
  height: 30vw;
}
main .main_section.operation .prev_arrow_btn {
  margin-bottom: 12rem;
}
@media screen and (max-width: 768px) {
  main .main_section.operation .ttl img {
    width: 67rem;
  }
  main .main_section.operation .lead01 {
    font-size: 4.6rem;
    line-height: 7rem;
  }
  main .main_section.operation .content_wrap .content_box {
    margin-bottom: 68vw;
  }
  main .main_section.operation .content_wrap .content_box::after {
    background-image: url(/kids/assets/img/swim/operation/img04_sp.png);
    bottom: -58vw;
    height: 58.7vw;
  }
  main .main_section.operation .content_box .flex_box {
    margin-top: 8rem;
  }
  main .main_section.operation .content_box .flex_box > div + div {
    margin: 8rem auto 0;
  }
  main .main_section.operation .content_box .flex_box .content_bg {
    background-image: url(/kids/assets/img/swim/operation/bg01_sp.png);
    width: 62rem;
    height: 95.4rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg:nth-of-type(2) {
    background-image: url(/kids/assets/img/swim/operation/bg02_sp.png);
    height: 82.3rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg:nth-of-type(3) {
    background-image: url(/kids/assets/img/swim/operation/bg03_sp.png);
    height: 77rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg .inner {
    padding: 10rem 7rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg img {
    margin: auto;
  }
  main .main_section.operation .content_box .flex_box .content_bg .img01 {
    width: 35.2rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg .img02 {
    width: 30.8rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg .img03 {
    width: 49.5rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg .lead02 {
    font-size: 2.6rem;
    line-height: 5.6rem;
    margin-top: 6rem;
  }
  main .main_section.operation .content_box .flex_box .content_bg .txt_small {
    font-size: 2rem;
    line-height: 3.6rem;
    margin-top: 4rem;
  }
}
main .main_section.coordination .ttl img {
  width: 52.4rem;
}
main .main_section.coordination .content_wrap .content_box {
  text-align: center;
  margin: 20rem 0;
  padding: 10rem 0 0rem;
}
main .main_section.coordination .content_wrap .content_box h3.lead01 {
  width: 53.4rem;
  margin: auto;
}
main .main_section.coordination .content_wrap .content_box .txt01 {
  font-size: 1.6rem;
  line-height: 3.2rem;
  font-weight: bold;
  margin: 5rem 0;
}
main .main_section.coordination .content_wrap .content_box .img01 {
  width: 104.3rem;
  margin-top: 8rem;
}
main .main_section.coordination .content_wrap .content_box01 {
  margin-top: 30rem;
  margin-bottom: 10rem;
}
main .main_section.coordination .content_wrap .content_box01::before, main .main_section.coordination .content_wrap .content_box01::after {
  content: none;
}
main .main_section.coordination .content_wrap .content_box01 .flex_box .content_box_ttl {
  font-size: 3rem;
  line-height: 4.5rem;
}
main .main_section.coordination .content_wrap .prev_arrow_btn {
  margin-bottom: 12rem;
}
@media screen and (max-width: 768px) {
  main .main_section.coordination .ttl {
    padding-bottom: 0;
  }
  main .main_section.coordination .ttl img {
    width: 67rem;
  }
  main .main_section.coordination .content_wrap .content_box h3.lead01 {
    width: 50.2rem;
  }
  main .main_section.coordination .content_wrap .content_box h3.lead01::before {
    left: -5rem;
  }
  main .main_section.coordination .content_wrap .content_box h3.lead01::after {
    right: -5rem;
  }
  main .main_section.coordination .content_wrap .content_box .txt01 {
    font-size: 3.2rem;
    line-height: 6rem;
    width: 59.4rem;
    margin: 6rem auto 8rem;
    text-align: left;
  }
  main .main_section.coordination .content_wrap .content_box .img01 {
    width: 71.8rem;
    margin: 18rem auto 0;
    display: block;
  }
  main .main_section.coordination .content_wrap .content_box01 {
    margin-top: 20rem;
  }
  main .main_section.coordination .content_wrap .content_box01 .flex_box img {
    width: 62.3rem;
    margin: 8rem auto 0;
  }
  main .main_section.coordination .content_wrap .content_box01 .flex_box .content_box_ttl {
    font-size: 4rem;
    line-height: 6rem;
  }
}
main .main_section.effect .ttl img {
  width: 52.4rem;
}
main .main_section.effect .content_box .flex_box {
  align-items: stretch;
}
main .main_section.effect .content_box .flex_box > div {
  padding: 5rem 3rem 4rem;
}
main .main_section.effect .content_box .flex_box > div .num {
  height: 4.8rem;
  top: -2rem;
  opacity: 0.7;
}
main .main_section.effect .content_box .flex_box > div .content_box_ttl span {
  background: linear-gradient(transparent 70%, #c5e5ff 70%);
}
main .main_section.effect .content_box .flex_box > div .content_box_txt {
  margin-top: 2.5rem;
}
@media screen and (min-width: 769px) {
  main .main_section.effect .content_box .flex_box > div.num06 .content_box_ttl {
    padding-top: 2rem;
  }
  main .main_section.effect .content_box .flex_box > div.num06 .content_box_txt {
    margin-top: 5rem;
  }
}
main .main_section.effect .content_box .flex_box + .flex_box {
  margin-top: 8rem;
}
main .main_section.effect .content_box01 {
  margin-top: 30rem;
}
main .main_section.effect .content_box01::before, main .main_section.effect .content_box01::after {
  content: none;
}
main .main_section.effect .content_box01 .flex_box .content_box_ttl {
  font-size: 3rem;
  line-height: 4rem;
}
main .main_section.effect .content_box01 .flex_box .content_box_txt {
  width: 100%;
}
main .main_section.effect .content_box01 .flex_box img {
  width: 49.6rem;
}
main .main_section.effect .content_box01 .flex_box.img_left img {
  margin: 0 5rem 0 0;
  width: 30rem;
}
main .main_section.effect .content_box01 .profile_box {
  background-color: #ebebeb;
  width: 65.8rem;
  margin: 8rem auto 0;
}
main .main_section.effect .content_box01 .profile_box .name {
  margin-bottom: 2rem;
}
main .main_section.effect .content_box01 .profile_box .name .lead01 {
  margin-bottom: 0.5rem;
}
main .main_section.effect .content_box01 .profile_box .lead01 {
  font-size: 1.4rem;
  line-height: 2.6rem;
}
main .main_section.effect .content_box01 .profile_box .lead02 {
  font-size: 2rem;
  line-height: 2.1rem;
}
main .main_section.effect .content_box01 .profile_box .flex_box {
  width: auto;
  padding: 3rem;
}
main .main_section.effect .content_box01 .profile_box .flex_box.img_left img {
  margin: 0;
  width: 43rem;
}
main .main_section.effect .content_box01 .profile_box .flex_box.img_left div + div {
  margin: 0 0 0 5rem;
}
main .main_section.effect .prev_arrow_btn {
  margin: 10rem auto 12rem;
}
@media screen and (max-width: 768px) {
  main .main_section.effect .ttl {
    padding-bottom: 0;
  }
  main .main_section.effect .ttl img {
    width: 67rem;
  }
  main .main_section.effect .ttl p.txt01 {
    text-align: center;
  }
  main .main_section.effect .content_box .flex_box + .flex_box {
    margin-top: 12rem;
  }
  main .main_section.effect .content_box .flex_box > div {
    padding: 8rem 10rem 6rem;
    width: 42rem;
  }
  main .main_section.effect .content_box .flex_box > div .content_box_ttl {
    font-size: 4rem;
    line-height: 6rem;
    margin-top: 0;
  }
  main .main_section.effect .content_box .flex_box > div .num {
    height: 10rem;
    top: -5rem;
  }
  main .main_section.effect .content_box01 {
    margin-top: 20rem;
  }
  main .main_section.effect .content_box01 .flex_box .content_box_ttl {
    font-size: 4rem;
    line-height: 6rem;
  }
  main .main_section.effect .content_box01 .profile_box .flex_box {
    padding: 3rem 6rem;
    display: flex;
    margin-top: 8rem;
  }
  main .main_section.effect .content_box01 .profile_box .flex_box.img_left img {
    width: 83.2rem;
  }
  main .main_section.effect .content_box01 .profile_box .flex_box .name .lead01 {
    font-size: 2.2rem;
  }
  main .main_section.effect .content_box01 .profile_box .flex_box .name .lead02 {
    font-size: 3rem;
  }
  main .main_section.effect .content_box01 .profile_box .flex_box .lead01 {
    font-size: 2rem;
    line-height: 3.6rem;
  }
}
main .main_section.course .ttl {
  color: #006cff;
}
main .main_section.course .ttl p {
  font-size: 4.6rem;
  line-height: 6rem;
  margin-top: 2rem;
}
main .main_section.course .ttl .sub_txt {
  font-size: 2.8rem;
  line-height: 4.5rem;
}
main .main_section.course .txt01 {
  font-size: 1.6rem;
  line-height: 3.2rem;
  font-weight: bold;
  text-align: center;
  margin-top: 8rem;
}
main .main_section.course .img01 {
  width: 100%;
  display: block;
  margin: auto;
  position: relative;
}
main .main_section.course .img01 p {
  position: absolute;
  left: 13%;
  top: 0;
  width: 3.3vw;
}
main .main_section.course .txt_lead {
  text-align: center;
  margin-top: 8rem;
}
main .main_section.course .txt_lead .lead01 {
  font-size: 2.8rem;
  line-height: 6rem;
  font-weight: bold;
  margin-top: 2rem;
  color: #fff;
  background-color: #006cff;
  display: inline-block;
  padding: 0 3rem;
}
main .main_section.course .txt_lead .txt_small {
  font-size: 1.4rem;
  line-height: 2.6rem;
  margin-top: 5rem;
}
main .main_section.course .prev_arrow_btn {
  margin: 12rem auto;
}
main .main_section.course .content_box {
  background: url(/kids/assets/img/swim/course/bg01.png);
  background-repeat: repeat-x;
  background-size: contain;
  padding: 22rem 0;
  margin: 0;
}
main .main_section.course .content_box::before, main .main_section.course .content_box::after {
  content: none;
}
main .main_section.course .content_box .lead01 {
  width: 33rem;
  margin: auto;
}
main .main_section.course .content_box .img02 {
  width: 114rem;
  margin: 5rem auto 0;
  display: block;
}
main .main_section.course .content_box .img03 {
  width: 107.6rem;
  margin: 10rem auto 0;
  display: block;
}
main .main_section.course .content_box .slide_swim {
  margin-top: 8rem;
}
main .main_section.course .tab_box {
  margin-top: 8rem;
}
main .main_section.course .tab_box .btn_area {
  margin: 0 10px;
  display: flex;
  justify-content: center;
}
main .main_section.course .tab_box .tab_btn {
  width: 17.8rem;
  padding: 8px 0;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease 0s;
}
main .main_section.course .tab_box .tab_btn + .tab_btn {
  margin-left: 14rem;
}
main .main_section.course .tab_box .tab_btn:hover {
  opacity: 0.7;
}
main .main_section.course .tab_box .tab_btn .on {
  display: none;
}
main .main_section.course .tab_box .tab_btn.active .on {
  display: block;
}
main .main_section.course .tab_box .tab_btn.active .off {
  display: none;
}
main .main_section.course .tab_box .tab_panel {
  display: none;
}
main .main_section.course .tab_box .tab_panel.active {
  display: block;
}
@media screen and (max-width: 768px) {
  main .main_section.course .ttl {
    padding-bottom: 0;
  }
  main .main_section.course .ttl .sub_txt {
    font-size: 3.6rem;
    line-height: 5.8rem;
  }
  main .main_section.course .ttl p {
    text-align: center;
    line-height: 9rem;
    font-size: 6rem;
  }
  main .main_section.course .txt01 {
    font-size: 3.2rem;
    line-height: 6rem;
    margin-top: 5rem;
  }
  main .main_section.course .img01 {
    margin: 5rem auto 0;
  }
  main .main_section.course .img01 p {
    left: 8%;
    top: -11rem;
    width: 6.3rem;
  }
  main .main_section.course .txt_lead {
    text-align: left;
    width: 62rem;
    margin: 8rem auto 0;
  }
  main .main_section.course .txt_lead .lead01 {
    font-size: 4rem;
    line-height: 6rem;
    margin-top: 3rem;
  }
  main .main_section.course .txt_lead .txt01 {
    text-align: left;
  }
  main .main_section.course .txt_lead .txt_small {
    font-size: 2.4rem;
  }
  main .main_section.course .content_wrap {
    padding-top: 8rem;
  }
  main .main_section.course .tab_box .tab_btn {
    width: 26rem;
  }
  main .main_section.course .tab_box .tab_btn + .tab_btn {
    margin-left: 6rem;
  }
  main .main_section.course .content_box {
    background: #006cff;
    margin-top: 14rem;
    padding-top: 6rem;
    padding-bottom: 0;
    margin-bottom: 30rem;
  }
  main .main_section.course .content_box::before {
    content: "";
    background-image: url(/kids/assets/img/swim/course/bg01_sp.png);
    height: 14.4rem;
    top: -14rem;
  }
  main .main_section.course .content_box::after {
    content: "";
    background-image: url(/kids/assets/img/swim/course/bg02_sp.png);
    height: 18.7rem;
    bottom: -18rem;
  }
  main .main_section.course .content_box .lead01 {
    width: 49.2rem;
  }
  main .main_section.course .content_box .img03 {
    width: 64rem;
    margin: 25rem auto 0;
  }
  main .main_section.course .content_box .acc_wrap {
    margin-top: 5rem;
  }
  main .main_section.course .content_box .js_acc + .js_acc {
    position: relative;
  }
  main .main_section.course .content_box .js_acc:first-of-type .content_box_ttl {
    border-top: none;
  }
  main .main_section.course .content_box .js_acc:nth-of-type(2) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num02.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(3) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num03.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(4) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num04.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(5) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num05.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(6) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num06.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(7) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num07.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(8) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num08.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(9) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num09.png);
  }
  main .main_section.course .content_box .js_acc:nth-of-type(10) .content_box_ttl::before {
    background-image: url(/kids/assets/img/swim/course/acc_num10.png);
  }
  main .main_section.course .content_box .js_acc .content_box_ttl {
    border-top: 1px solid #fff;
    position: relative;
    font-size: 3.6rem;
    line-height: 5rem;
    color: #fff;
    width: 50rem;
    margin: auto;
    padding: 3rem 0 3rem 2.7em;
    text-indent: -2.7em;
  }
  main .main_section.course .content_box .js_acc .content_box_ttl::after {
    content: "";
    display: inline-block;
    border-top: 0.4rem solid #c5e5ff;
    border-right: 0.4rem solid #c5e5ff;
    width: 1.3rem;
    height: 1.3rem;
    right: 2rem;
    position: absolute;
    top: 38%;
    transform: rotate(135deg) translateY(-50%);
  }
  main .main_section.course .content_box .js_acc .content_box_ttl::before {
    content: "";
    display: inline-block;
    background-image: url(/kids/assets/img/swim/course/acc_num01.png);
    background-size: contain;
    background-repeat: no-repeat;
    width: 7.3rem;
    height: 4rem;
    position: relative;
    top: 0.2em;
    left: 0;
    padding-right: 2rem;
  }
  main .main_section.course .content_box .js_acc .content_box_txt {
    background-color: #fff;
    padding: 8rem 0;
  }
  main .main_section.course .content_box .js_acc .hide {
    display: none;
  }
  main .main_section.course .content_box .js_acc.on .content_box_ttl::after {
    content: none;
  }
}
main .main_section.training .training_course {
  background-color: #c6e6ff;
  margin-top: 8rem;
}
main .main_section.training .training_course .flex_box {
  padding: 6rem 0;
}
main .main_section.training .training_course .flex_box > div {
  background-color: #fff;
  width: 36rem;
  border: 2px solid #2da3ff;
  border-radius: 1rem;
  text-align: center;
}
main .main_section.training .training_course .flex_box > div .inner {
  padding: 4rem 2rem;
}
main .main_section.training .training_course .flex_box > div + div {
  margin-left: 3rem;
}
main .main_section.training .training_course .course_name {
  font-size: 3rem;
  line-height: 4.5rem;
  color: #006cff;
  font-weight: bold;
  border-bottom: 2px dotted #006cff;
  padding-bottom: 1rem;
}
main .main_section.training .training_course .lead01 {
  font-size: 2.6rem;
  line-height: 4.5rem;
  font-weight: bold;
  padding-top: 1rem;
}
main .main_section.training .training_course .txt01 {
  text-align: left;
  margin-top: 2rem;
}
main .main_section.training .flex_box {
  display: flex;
  justify-content: center;
  align-items: stretch;
}
main .main_section.training .training_club .flex_box {
  max-width: 1000px;
  width: 100rem;
  margin: 8rem auto 0;
}
main .main_section.training .training_club .flex_box img {
  width: 57.3rem;
  margin-left: 8rem;
}
main .main_section.training .training_club .flex_box .txt01 {
  text-align: left;
}
main .main_section.training .training_club .flex_box .btn_detail {
  width: 32.6rem;
}
main .main_section.training .btn_detail {
  background-color: #006cff;
}
main .main_section.training .training_intro {
  margin-top: 8rem;
  background-color: #e4f5fd;
  padding: 8rem 0;
}
main .main_section.training .training_intro img {
  width: 65rem;
  margin: auto;
  display: block;
}
main .main_section.training .training_intro .btn_detail {
  width: 25.2rem;
}
main .main_section.training .oyako_course .lead01 {
  font-size: 2.4rem;
  line-height: 5rem;
}
main .main_section.training .oyako_course dl {
  width: 75.4rem;
  margin: 3rem auto 0;
  text-align: left;
}
main .main_section.training .oyako_course dl dt {
  font-size: 2.6rem;
  line-height: 4.5rem;
  font-weight: bold;
  border-bottom: 3px dotted #006cff;
  padding-bottom: 1rem;
}
main .main_section.training .oyako_course dl dd {
  padding-top: 1.5rem;
}
main .main_section.training .oyako_course dl dd ul li {
  list-style: none;
}
main .main_section.training .oyako_course dl dd ul li span {
  color: #006cff;
  padding-right: 0.5em;
}
main .main_section.training .oyako_course dl + dl {
  margin-top: 5rem;
}
main .main_section.training .oyako_course .btn_detail {
  width: 40rem;
  margin-top: 8rem;
}
@media screen and (max-width: 768px) {
  main .main_section.training .training_course .flex_box {
    display: block;
    padding: 10rem 0;
  }
  main .main_section.training .training_course .flex_box > div {
    width: 62rem;
    margin: 0 auto;
  }
  main .main_section.training .training_course .flex_box > div + div {
    margin: 6rem auto 0;
  }
  main .main_section.training .training_course .flex_box > div .inner {
    padding: 6.5rem;
  }
  main .main_section.training .training_course .flex_box > div .course_name {
    font-size: 5rem;
    line-height: 6rem;
    padding-bottom: 3rem;
  }
  main .main_section.training .training_course .flex_box > div .lead01 {
    font-size: 4rem;
    line-height: 7rem;
  }
  main .main_section.training .training_course .flex_box > div .txt01 {
    font-size: 2.6rem;
    line-height: 5.6rem;
  }
  main .main_section.training .training_course .flex_box.fs01 > div .course_name {
    font-size: 4rem;
  }
  main .main_section.training .training_club {
    width: 59.4rem;
    margin: 0 auto;
  }
  main .main_section.training .training_club .flex_box {
    width: 100%;
    flex-direction: column;
  }
  main .main_section.training .training_club .flex_box img {
    order: -1;
    width: 50.6rem;
    margin: auto;
  }
  main .main_section.training .training_club .flex_box .txt01 {
    margin-top: 8rem;
  }
  main .main_section.training .training_club .flex_box .btn_detail {
    width: 53.4rem;
    margin-top: 6rem;
  }
  main .main_section.training .training_intro {
    padding: 10rem 0;
  }
  main .main_section.training .training_intro img {
    width: 55rem;
  }
  main .main_section.training .training_intro .btn_detail {
    width: 40rem;
    margin-top: 6rem;
  }
  main .main_section.training .oyako_course .txt_lead {
    margin: 8rem auto 0;
    text-align: center;
  }
  main .main_section.training .oyako_course .txt_lead .lead01 {
    font-size: 5rem;
    line-height: 6rem;
    padding: 1rem 4rem;
  }
  main .main_section.training .oyako_course dl {
    width: 59.4rem;
    margin: 6rem auto 0;
  }
  main .main_section.training .oyako_course dl dt {
    font-size: 4rem;
    line-height: 7rem;
    border-bottom: 2px dotted #006cff;
  }
  main .main_section.training .oyako_course dl dd ul li {
    font-size: 2.6rem;
    line-height: 5.6rem;
  }
  main .main_section.training .oyako_course dl + dl {
    margin-top: 5rem;
  }
  main .main_section.training .oyako_course .btn_detail {
    width: 66rem;
    font-size: 2.6rem;
  }
}

.slide_swim .slick-slide {
  margin: 0 1rem;
}
@media screen and (max-width: 768px) {
  .slide_swim .slick-slide img {
    width: 62rem;
    margin: auto;
  }
}
.slide_swim .slide-arrow {
  background: #ff940b;
  width: 5rem;
  height: 5rem;
  position: absolute;
  z-index: 2;
  transform: translate(-50%, -50%);
  border: 0.3rem solid #fff;
  border-radius: 50px;
}
.slide_swim .slide-arrow.prev-arrow {
  left: 30%;
  top: 50%;
}
.slide_swim .slide-arrow.prev-arrow::before {
  content: "";
  position: absolute;
  border-bottom: solid 0.4rem #fff;
  border-left: solid 0.4rem #fff;
  width: 0.8rem;
  height: 0.8rem;
  top: 50%;
  left: 50%;
  transform: rotate(45deg) translate(-63%, -12%);
  box-sizing: content-box;
}
.slide_swim .slide-arrow.next-arrow {
  right: 26.5%;
  top: 50%;
}
.slide_swim .slide-arrow.next-arrow::before {
  content: "";
  border-top: solid 0.4rem #fff;
  border-right: solid 0.4rem #fff;
  position: absolute;
  width: 0.8rem;
  height: 0.8rem;
  top: 50%;
  left: 50%;
  transform: rotate(45deg) translate(-80%, 0);
  box-sizing: content-box;
}
@media screen and (max-width: 768px) {
  .slide_swim .slide-arrow.prev-arrow, .slide_swim .slide-arrow.next-arrow {
    bottom: -10rem;
    top: auto;
  }
  .slide_swim .slide-arrow.prev-arrow {
    left: 27%;
  }
  .slide_swim .slide-arrow.next-arrow {
    right: 20%;
  }
}
.slide_swim .slick-dots li button:before {
  padding-top: 2rem;
  opacity: 1;
  font-size: 3rem;
  color: #fff;
}
@media screen and (max-width: 768px) {
  .slide_swim .slick-dots li {
    width: auto;
    height: auto;
    margin: 0 1rem;
  }
  .slide_swim .slick-dots li button:before {
    width: auto;
    height: auto;
    font-size: 5rem;
    padding-top: 2rem;
    line-height: 0;
  }
  .slide_swim .slick-dots li button {
    width: auto;
    height: auto;
  }
}
.slide_swim .slick-dots li.slick-active button:before {
  opacity: 1;
  color: #006cff;
}
.slide_swim .kids_swim_slick02 .slick-dots li.slick-active button:before {
  color: #ff930b;
}

.prev_arrow_btn {
  color: #ff940b;
  font-size: 1.8rem;
  text-align: center;
  display: block;
}
.prev_arrow_btn a {
  display: inline-block;
  padding: 1.5rem 2rem;
  border-top: 3px dotted #ff940b;
  border-bottom: 3px dotted #ff940b;
}
@media screen and (max-width: 768px) {
  .prev_arrow_btn {
    font-size: 2.6rem;
  }
  .prev_arrow_btn a {
    padding: 3rem 5rem;
  }
}

.topswimmer_box {
  display: flex;
  flex-direction: column;
  align-items: center;
}
@media screen and (min-width: 769px) {
  .topswimmer_box {
    margin-top: 9.3rem;
  }
}
@media screen and (max-width: 768px) {
  .topswimmer_box {
    margin-top: 9.8rem;
  }
}
.topswimmer_box h3 {
  position: relative;
}
@media screen and (min-width: 769px) {
  .topswimmer_box h3 {
    width: 79.75rem;
  }
  .topswimmer_box h3::before {
    content: "";
    position: absolute;
    background-image: url(/kids/assets/img/swim/topofswimmer_head_bg.png);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    width: 130.095%;
    height: 100%;
    left: 50%;
    top: 0;
    bottom: 0;
    translate: -50% 0;
    pointer-events: none;
  }
}
@media screen and (max-width: 768px) {
  .topswimmer_box h3 {
    width: 70.6rem;
  }
}
.topswimmer_box p {
  position: relative;
  font-weight: bold;
}
@media screen and (min-width: 769px) {
  .topswimmer_box p {
    margin-top: 6.4rem;
    line-height: 1.72;
    font-size: 1.5625em;
    text-align: center;
  }
  .topswimmer_box p::before, .topswimmer_box p::after {
    content: "";
    position: absolute;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    pointer-events: none;
  }
  .topswimmer_box p::before {
    background-image: url(/kids/assets/img/swim/topofswimmer_p_bg1_pc.png);
    width: 20rem;
    height: 27.125rem;
    left: -22.625rem;
    top: -63.084%;
  }
  .topswimmer_box p::after {
    background-image: url(/kids/assets/img/swim/topofswimmer_p_bg2_pc.png);
    width: 21.125rem;
    height: 27.375rem;
    right: -19.75rem;
    top: -65.42%;
  }
}
@media screen and (max-width: 768px) {
  .topswimmer_box p {
    width: 63rem;
    margin-top: 4.2rem;
    line-height: 1.625;
    font-size: 3.2em;
  }
  .topswimmer_box p::before {
    content: "";
    display: block;
    background-image: url(/kids/assets/img/swim/topofswimmer_p_bg_sp.png);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    width: 63.2rem;
    height: 45.5rem;
    margin: 0 auto 6.3rem;
    pointer-events: none;
  }
}
@media screen and (min-width: 769px) {
  .topswimmer_box figure {
    width: 88rem;
    margin-top: 8.6rem;
  }
}
@media screen and (max-width: 768px) {
  .topswimmer_box figure {
    width: 70.5rem;
    margin-top: 11.2rem;
  }
}

h3.lead01 {
  font-size: 3.4rem;
  line-height: 5.4rem;
  font-weight: bold;
  text-align: center;
  color: #006cff;
  position: relative;
  display: inline-block;
}
h3.lead01::before, h3.lead01::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 9rem;
  background-color: #000;
  position: absolute;
  bottom: 0;
}
h3.lead01::before {
  left: -10rem;
  transform: rotate(-25deg);
}
h3.lead01::after {
  right: -10rem;
  transform: rotate(25deg);
}

html[lang=en] main .main_section.operation .content_box .flex_box {
  align-items: stretch;
}
html[lang=en] main .main_section.operation .content_box .flex_box .content_bg {
  background-size: 100% 100%;
  height: auto;
}