body {
  padding-top: 0;
}

.l-header {
  display: none;
}

.ttl-01 {
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  width: 100%;
  -webkit-box-pack: center;
          justify-content: center;
}

.ttl-01 .large {
  position: relative;
  padding-right: 60px;
  font-family: "Roboto", sans-serif;
  font-size: 2.8rem;
  font-weight: 300;
  letter-spacing: .022em;
}

.ttl-01 .large::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 30px;
  width: 1px;
  height: 22px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  background-color: #697374;
}

.ttl-01 .small {
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: .016em;
}

.ttl-01.is-white {
  color: #fff;
}

.ttl-01.is-white .large::before {
  background-color: #fff;
}

.mv {
  position: relative;
}

.mv__bnr {
  z-index: +1;
  position: absolute;
  top: 0;
  right: 70px;
  width: 154px;
}

.concept {
  padding: 50px 0 0;
}

.concept__ttl {
  margin-bottom: 12px;
  font-size: 2.8rem;
  font-weight: 500;
  letter-spacing: .078em;
}

.concept__txt {
  line-height: 2.5;
  letter-spacing: .046em;
}

.concept__btn {
  margin-top: 50px;
}

.technology {
  z-index: +1;
  position: relative;
}

.technology::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100vw;
  height: 100%;
  background-color: #697374;
}

.technology__unit {
  padding: 40px 0 50px;
}

.technology__ttl {
  color: #dfe5e7;
  font-weight: 500;
  line-height: 2;
  letter-spacing: .063em;
}

.technology__btn-list {
  margin-top: 50px;
}

.lineup__unit {
  padding: 50px 0 40px;
}

.lineup__ttl {
  font-weight: 500;
  line-height: 2;
  letter-spacing: .063em;
}

.lineup__txt {
  font-family: "Roboto", sans-serif;
  font-weight: 400;
  letter-spacing: .08em;
}

.lineup__btn {
  margin-top: 50px;
}

.lineup__img {
  position: relative;
}

.lineup__img-item {
  position: absolute;
  top: 0;
  left: 0;
  -webkit-transform: translateX(-16px);
          transform: translateX(-16px);
  opacity: 0;
  -webkit-transition: opacity 1.5s, -webkit-transform 1.5s;
  transition: opacity 1.5s, -webkit-transform 1.5s;
  transition: opacity 1.5s, transform 1.5s;
  transition: opacity 1.5s, transform 1.5s, -webkit-transform 1.5s;
}

.is-visible .lineup__img-item {
  -webkit-transform: translateX(0);
          transform: translateX(0);
  opacity: 1;
}

.lineup__img-item.is-02 {
  -webkit-transition-delay: .6s;
          transition-delay: .6s;
}

.lineup__img-item.is-03 {
  -webkit-transition-delay: 1.2s;
          transition-delay: 1.2s;
}

.lineup__img-item.is-04 {
  -webkit-transition-delay: 1.8s;
          transition-delay: 1.8s;
}

.gallery {
  position: relative;
  margin-bottom: 60px;
}

.gallery__ttl {
  z-index: +1;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  pointer-events: none;
}

.gallery__img {
  position: relative;
}

.gallery__img-item {
  overflow: hidden;
  display: block;
}

.gallery__img-item img {
  -webkit-transition: -webkit-transform .4s;
  transition: -webkit-transform .4s;
  transition: transform .4s;
  transition: transform .4s, -webkit-transform .4s;
}

.gallery__img-item:hover {
  opacity: 1;
}

.gallery__img-item:hover img {
  -webkit-transform: scale(1.1);
          transform: scale(1.1);
}

.clients {
  margin-bottom: 80px;
}

.reference__ttl {
  z-index: +1;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  pointer-events: none;
}

.reference__img {
  position: relative;
}

@media screen and (min-width: 768px) {
  .ttl-01 .large {
    padding-right: 80px;
    font-size: 4.4rem;
  }
  .ttl-01 .large::before {
    right: 40px;
    height: 32px;
  }
  .ttl-01 .small {
    font-size: 1.6rem;
  }
  .mv {
    overflow: hidden;
    height: 100vh;
    min-height: 500px;
    background: url(/product_floor/toughtectile/img/mv_pc.jpg) no-repeat 50%/cover;
  }
  .mv video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    -webkit-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
  }
  .mv__bnr {
    top: 32px;
    right: 120px;
    width: 154px;
  }
  .concept {
    padding: 115px 0 120px;
  }
  .concept__ttl {
    margin-bottom: 26px;
    font-size: 5.2rem;
  }
  .concept__txt {
    font-size: 1.8rem;
  }
  .concept__btn {
    margin-top: 100px;
  }
  .concept__img {
    position: absolute;
    bottom: 0;
    right: -120px;
  }
  .technology::before {
    right: -170px;
    min-width: 1400px;
  }
  .technology__img {
    position: absolute;
    top: 0;
    left: 0;
    display: -webkit-box;
    display: flex;
    -webkit-box-pack: end;
            justify-content: flex-end;
    width: 40%;
  }
  .technology__img img {
    max-width: none;
  }
  .technology__unit {
    width: 54%;
    min-height: 720px;
    margin-left: auto;
    padding: 110px 0 120px;
  }
  .technology__ttl {
    font-size: 4.2rem;
  }
  .technology__btn-list {
    display: -webkit-box;
    display: flex;
    margin-top: 180px;
  }
  .technology__btn-list li {
    margin-right: 40px;
  }
  .technology__btn-list li:last-of-type {
    margin-right: 0;
  }
  .lineup {
    display: -webkit-box;
    display: flex;
  }
  .lineup__unit {
    width: 50%;
    padding: 110px 0 180px;
  }
  .lineup__ttl {
    margin-bottom: 40px;
    font-size: 4.2rem;
  }
  .lineup__txt {
    font-size: 2rem;
  }
  .lineup__btn {
    margin-top: 110px;
  }
  .lineup__img {
    width: 50%;
  }
  .lineup__img-item {
    top: 120px;
    max-width: none;
  }
  .gallery {
    margin-bottom: 100px;
    display: -webkit-box;
    display: flex;
    -webkit-box-pack: center;
            justify-content: center;
    padding: 0 2%;
  }
  .gallery__img {
    grid-template-rows: 50% 50%;
    grid-template-columns: 670px 750px;
    margin-right: 20px;
  }
  .gallery__img-item img {
    /*max-width: none;*/
  }
  .gallery__img-item.is-03 {
    grid-row: 1 / 3;
    grid-column: 2;
  }
  .clients {
    margin-bottom: 170px;
  }
  .reference__img {
    margin-left: 20px;
  }
  .top_cmn-resize .ttl-01 .large {
    font-size: clamp(3.6rem, 3.2vw, 4.4rem);
  }
}

@media screen and (max-width: 767px) {
  .mv {
    height: 75vw;
    background: url(/product_floor/toughtectile/img/mv_sp.jpg) no-repeat 50%/cover;
  }
  .mv video {
    display: none;
  }
  .concept__img {
    width: 90%;
    margin: 30px auto 0;
  }
  .technology__img {
    position: relative;
    margin-left: -5vw;
    padding-right: 10%;
  }
  .technology__btn-list li {
    margin-bottom: 20px;
  }
  .technology__btn-list li:last-of-type {
    margin-bottom: 0;
  }
  .lineup {
    padding-bottom: 50px;
  }
  .lineup__img {
    margin-right: -10vw;
  }
  .lineup__img-item.is-01 {
    position: relative;
  }
  .gallery__img {
    margin: 0 -5vw;
  }
  .reference__img {
    margin: 0 -5vw;
  }
}