/*
 * Mixin for placeholder
 * @include placeholderColor(#00ff00);
 */
.u-research {
  padding: 0 15px;
  margin-top: 40px;
}

@media screen and (min-width: 768px) {
  .u-research {
    max-width: 1500px;
    padding: 0 50px;
    margin: 75px auto 0;
    box-sizing: content-box;
  }
}

.u-research .research-about {
  padding: 45px 15px 60px;
  background: url(../../images/bg_research.jpg) center no-repeat;
  background-size: cover;
}

@media screen and (min-width: 768px) {
  .u-research .research-about {
    padding: 120px 50px;
  }
}

.u-research .research-about .about-ttl {
  display: block;
  margin-top: 5px;
  text-align: center;
  color: #060a60;
  font-family: newpeace,'A1 Mincho',serif;
  line-height: 1.5;
}

.u-research .research-about .about-ttl .ttl-en {
  font-weight: normal;
  font-size: 12px;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
}

@media screen and (min-width: 768px) {
  .u-research .research-about .about-ttl .ttl-en {
    font-size: 1.6rem;
  }
}

.u-research .research-about .about-ttl .ttl-jp {
  display: block;
  margin-top: 5px;
  text-align: center;
  font-size: 25px;
  font-size: 2.5rem;
  font-weight: bold;
  letter-spacing: 0.12em;
}

@media screen and (min-width: 768px) {
  .u-research .research-about .about-ttl .ttl-jp {
    font-size: 5.4rem;
  }
}

.u-research .research-about .about-desc {
  text-align: center;
  font-weight: bold;
  letter-spacing: 0.1em;
  color: #1f286f;
  margin-top: 20px;
  font-family: newpeace,'A1 Mincho',serif;
}

@media screen and (min-width: 768px) {
  .u-research .research-about .about-desc {
    margin-top: 40px;
  }
}

@media screen and (min-width: 768px) {
  .u-research .research-academic {
    max-width: 1294px;
    margin: 0 auto 120px;
  }
}

.u-research .research-academic .academic-ttl {
  margin-top: 40px;
  margin-bottom: 25px;
  text-align: center;
  letter-spacing: 0.1em;
  font-size: 19px;
  font-size: 1.9rem;
  line-height: 1.5;
  font-weight: bold;
  color: #1e2678;
  font-family: newpeace,'A1 Mincho',serif;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-ttl {
    font-size: 3.3rem;
    margin-top: 70px;
    margin-bottom: 40px;
  }
}

.u-research .research-academic .academic-list {
  max-width: 1120px;
  margin-inline: auto;
}

.u-research .research-academic .academic-list .list-item:nth-child(n+2) {
  margin-top: 15px;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item:nth-child(n+2) {
    margin-top: 30px;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner {
  padding: 35px 15px;
  background: #F8F7F9;
  display: block;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner {
    padding: 65px 50px;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner .item-txt {
  color: #393c50;
  letter-spacing: 0.1em;
  line-height: 2.0;
  text-align: center;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner .item-txt {
    max-width: 600px;
    margin: 0 auto;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner .item-btn {
  margin-top: 15px;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner .item-btn {
    margin-top: 30px;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner .item-btn .m-btn-icon {
  color: #1e2678;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner .item-btn .m-btn-icon {
    font-size: 1.6rem;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner .item-btn .m-btn-icon .icon-inner {
  padding-right: 45px;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner .item-btn .m-btn-icon .icon-inner {
    padding-right: 65px;
  }
}

.u-research .research-academic .academic-list .list-item .item-inner .item-btn .m-btn-icon .icon-inner .add-icon svg {
  fill: #262a75;
}

[data-whatinput="keyboard"] .u-research .research-academic .academic-list .list-item .item-inner:focus .item-btn .m-btn-icon .icon-inner .add-icon {
  margin-right: -20px;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-list .list-item .item-inner:hover .item-btn .m-btn-icon .icon-inner .add-icon {
    margin-right: -20px;
  }
}

.u-research .research-academic .academic-content {
  height: 340px;
  overflow-y: scroll;
  width: 100%;
}

@media screen and (min-width: 768px) {
  .u-research .research-academic .academic-content {
    height: 640px;
  }
}

.u-research .research-academic .academic-content::-webkit-scrollbar {
  width: 4px;
}

.u-research .research-academic .academic-content::-webkit-scrollbar-track {
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
}

.u-research .research-academic .academic-content::-webkit-scrollbar-thumb {
  background-color: #9284AB;
  border-radius: 2px;
}

@-moz-document url-prefix() {
  .academic-content {
    scrollbar-color: #9284AB rgba(0, 0, 0, 0.1);
    scrollbar-width: thin;
  }
}

.academic-ttl__large {
  text-align: center;
  color: #1e2678;
  font-size: 22px;
  font-size: 2.2rem;
  font-family: newpeace, 'A1 Mincho', serif;
  font-weight: bold;
  padding-top: 80px;
  position: relative;
}

.academic-ttl__large:before {
  position: absolute;
  top: 20px;
  right: 0;
  left: 0;
  display: block;
  width: 1px;
  height: 50px;
  margin: auto;
  content: '';
  background-color: #1e2678;
}

@media screen and (min-width: 768px) {
  .academic-ttl__large {
    font-size: 4rem;
    padding-top: 160px;
  }
  .academic-ttl__large:before {
    top: 30px;
    height: 100px;
  }
}

.academic-ttl__small {
  text-align: center;
  color: #1e2678;
  font-size: 19px;
  font-size: 1.9rem;
  font-family: newpeace, 'A1 Mincho', serif;
  font-weight: bold;
  margin-top: 40px;
}

@media screen and (min-width: 768px) {
  .academic-ttl__small {
    font-size: 3.3rem;
    margin-top: 80px;
  }
}

.academic-text {
  font-family: newpeace, 'A1 Mincho', serif;
  text-align: center;
  font-weight: bold;
  margin-top: 4px;
}

.academic-image {
  max-width: 1120px;
  margin-inline: auto;
  display: block;
  width: 100%;
  margin-top: 10px;
}

.academic-button {
  text-align: center;
  margin-top: 20px;
}

@media screen and (min-width: 768px) {
  .academic-button {
    margin-top: 40px;
  }
}

.academic-button__link {
  display: inline-block;
  border: #1e2678 1px solid;
  border-radius: 40px;
  color: #1e2678;
  font-weight: bold;
  transition: .5s;
  letter-spacing: .13em;
  width: 325px;
  padding-block: 16px;
  border-radius: 30px;
  font-size: 13px;
  font-size: 1.3rem;
}

@media screen and (min-width: 768px) {
  .academic-button__link {
    width: 360px;
    padding-block: 18px;
    border-radius: 35px;
    font-size: 1.6rem;
  }
}

[data-whatinput="keyboard"] .academic-button__link:focus {
  background-color: #1e2678;
  color: #fff;
}

@media screen and (min-width: 768px) {
  .academic-button__link:hover {
    background-color: #1e2678;
    color: #fff;
  }
}

.u-research__main {
  background: url("/assets/images/p_sleeptech_back_sp.jpg") center no-repeat;
  background-size: cover;
  position: relative;
  display: -ms-grid;
  display: grid;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  padding-block: 20px;
}

.u-research__main:before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: block;
  width: 50px;
  height: 50px;
  margin: auto;
  content: '';
  background: url("/assets/images/p_sleeptech_back_cross.svg") center no-repeat;
  background-size: 100% auto;
}

@media screen and (min-width: 768px) {
  .u-research__main {
    background: url("/assets/images/p_sleeptech_back.jpg") center no-repeat;
    padding-block: 0;
  }
  .u-research__main:before {
    width: 100px;
    height: 100px;
  }
}

.u-research__main-inner {
  display: -ms-grid;
  display: grid;
  -ms-grid-rows: (1fr)[2];
      grid-template-rows: repeat(2, 1fr);
  gap: 80px;
}

@media screen and (min-width: 768px) {
  .u-research__main-inner {
    -ms-grid-rows: auto;
        grid-template-rows: auto;
    -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
  }
}

.u-research__main-box {
  text-align: center;
}

@media screen and (min-width: 768px) {
  .u-research__main-box {
    padding-block: 40px;
  }
}

.u-research__main-box-title {
  color: #fff;
  text-shadow: 0px 0px 20px #fff;
  font-family: newpeace, 'A1 Mincho', serif;
  font-weight: bold;
  letter-spacing: 0.1em;
  font-size: 40px;
  font-size: 4rem;
}

@media screen and (min-width: 768px) {
  .u-research__main-box-title {
    font-size: 5rem;
  }
}

.u-research__main-box-text {
  color: #fff;
  letter-spacing: 0.05em;
}

@media screen and (min-width: 768px) {
  .u-research__main-box-text {
    font-size: 1.8rem;
  }
}

.u-research__main-box-button {
  padding-block: 10px 20px;
}

@media screen and (min-width: 768px) {
  .u-research__main-box-button {
    padding-block: 20px;
  }
}

.u-research__main-box-button-link {
  color: #fff;
  border-radius: 40px;
  padding: 8px 40px;
  background-color: #1e2678;
  box-shadow: 0px 0px 16px rgba(255, 255, 255, 0.2);
}

.academic-box {
  max-width: 1120px;
  margin-inline: auto;
}

.academic-bordertop {
  border-top: 1px solid #c8c8c8;
  margin-top: 30px;
}

@media screen and (min-width: 768px) {
  .academic-bordertop {
    margin-top: 60px;
  }
}

.academic-wrap {
  padding-bottom: 40px;
  border-bottom: 1px solid #c8c8c8;
}

@media screen and (min-width: 768px) {
  .academic-wrap {
    padding-bottom: 80px;
  }
}

.u-matm {
  margin-top: 30px;
}

@media screen and (min-width: 768px) {
  .u-matm {
    margin-top: 60px;
  }
}