.m-heading-01 {
  background: url(/product_floor/toughtectile/gallery/img/bg_ttl.jpg) no-repeat 50%/cover;
}

.gallery-wrap {
  position: relative;
}

.gallery-nav {
  display: none;
  z-index: 10;
  position: fixed;
  top: 50%;
  bottom: auto;
  right: 30px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}

.gallery-nav.is-absolute {
  position: absolute;
  top: auto;
}

.gallery-nav::before {
  content: "";
  position: absolute;
  top: 5px;
  right: 9px;
  width: 1px;
  height: calc(100% - 12px);
  background-color: #9ca8ae;
}

.gallery-nav li {
  margin-bottom: 42px;
  font-size: 1.4rem;
  line-height: 1;
  letter-spacing: .028em;
  text-align: right;
}

.gallery-nav li:last-of-type {
  margin-bottom: 0;
}

.gallery-nav li a {
  position: relative;
  display: inline-block;
  height: 1em;
  padding-right: 30px;
  color: #d2d6d7;
}

.gallery-nav li a::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 5px;
  width: 9px;
  height: 9px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  background-color: #9ca8ae;
  border-radius: 50%;
}

.gallery-nav li a.is-current {
  color: #697374;
}

.gallery-nav li a.is-current::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1px;
  width: 17px;
  height: 17px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  border: 2px solid #ea5037;
  border-radius: 50%;
}

.gallery {
  margin-bottom: 70px;
}

.gallery__ttl {
  margin-bottom: 20px;
  font-size: 2.4rem;
  font-weight: 400;
  letter-spacing: .072em;
  text-align: center;
}

.gallery__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 30px;
}

.gallery__list li {
  cursor: pointer;
}

.gallery-modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  -webkit-transition: opacity .3s;
  transition: opacity .3s;
}

.gallery-modal__close::before, .gallery-modal__close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 1px;
  background-color: #697374;
}

.gallery-modal__close::before {
  -webkit-transform: translateX(-50%) rotate(45deg);
          transform: translateX(-50%) rotate(45deg);
}

.gallery-modal__close::after {
  -webkit-transform: translateX(-50%) rotate(-45deg);
          transform: translateX(-50%) rotate(-45deg);
}

.gallery-modal__close:hover {
  cursor: pointer;
  opacity: .7;
}

.gallery-modal__navi {
  position: absolute;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border-right: 1px solid #686c6e;
  border-bottom: 1px solid #686c6e;
  -webkit-transition: opacity .3s;
  transition: opacity .3s;
  cursor: pointer;
}

.gallery-modal__navi::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200%;
  height: 200%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.gallery-modal__navi.is-prev {
  left: -20px;
  -webkit-transform: translateY(-50%) rotate(135deg);
          transform: translateY(-50%) rotate(135deg);
}

.gallery-modal__navi.is-next {
  right: -20px;
  -webkit-transform: translateY(-50%) rotate(-45deg);
          transform: translateY(-50%) rotate(-45deg);
}

.gallery-modal__contents {
  padding: 50px 40px 20px;
}

.gallery-modal__img {
  position: relative;
}

.gallery-modal__txt {
  margin-top: 10px;
  font-size: 1.3rem;
  letter-spacing: .056em;
}

.gallery-modal__txt dt {
  margin-bottom: .3em;
  font-weight: 500;
}

.gallery-modal__txt dd {
  font-weight: 400;
}

@media screen and (max-width: 767px) {
  .gallery-nav {
    display: none !important;
  }
  .gallery-modal {
    max-width: 96% !important;
  }
}

@media screen and (min-width: 768px) {
  .gallery {
    margin-bottom: 150px;
  }
  .gallery__ttl {
    margin-bottom: 45px;
    font-size: 3.6rem;
  }
  .gallery__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px 44px;
    margin-bottom: 60px;
  }
  .gallery__list li {
    position: relative;
  }
  .gallery__list li::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #dcdcdc;
    mix-blend-mode: multiply;
    opacity: 0;
    -webkit-transition: opacity .3s;
    transition: opacity .3s;
  }
  .gallery__list li:hover::before {
    opacity: 1;
  }
  .gallery-modal__close {
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
  }
  .gallery-modal__navi:hover {
    opacity: .7;
  }
  .gallery-modal__navi.is-prev {
    left: -30px;
  }
  .gallery-modal__navi.is-next {
    right: -30px;
  }
  .gallery-modal__contents {
    padding: 80px 100px 50px;
  }
  .gallery-modal__txt {
    margin-top: 20px;
    font-size: 1.4rem;
  }
}