.top {
  position: relative;
}
.top-image {
  position: relative;
  height: 100vh;
  background-size: cover;
  background-position: center;
}

.work {
  padding-top: 0;
  padding-bottom: 20vh;
}
.work-classification {
  display: -ms-flexbox;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
  padding: 0 5vw;
}
.work-classification-item {
  min-width: 200px;
  position: relative;
  text-align: center;
}
.work-classification-item a {
  position: relative;
  text-align: center;
  display: inline-block;
  width: auto;
  overflow: hidden;
  color: #999;
}
.work-classification-item a.active .en, .work-classification-item a.active .tw {
  color: #000;
}
.work-classification-item a .en, .work-classification-item a .tw {
  position: relative;
  display: block;
  font-size: 0.875rem;
  letter-spacing: 0;
}
.work-classification-item a .en {
  text-transform: uppercase;
  opacity: 1;
}
.work-classification-item a .tw {
  transform: translateY(-1.325rem);
  opacity: 0;
  -moz-transition: letter-spacing 0.6s, opacity 0.6s;
  -o-transition: letter-spacing 0.6s, opacity 0.6s;
  -webkit-transition: letter-spacing 0.6s, opacity 0.6s;
  transition: letter-spacing 0.6s, opacity 0.6s;
}
.work-classification-item a .tw:after {
  content: "";
  display: block;
  height: 1px;
  margin-left: -2px;
  margin-right: 8px;
  background: #999;
}
.work-classification-item a:hover .en {
  opacity: 0;
}
.work-classification-item a:hover .tw {
  opacity: 1;
  letter-spacing: 10px;
}
.work-classification-item a:hover .tw:after {
  -moz-transform: scaleX(1);
  -ms-transform: scaleX(1);
  -webkit-transform: scaleX(1);
  transform: scaleX(1);
}
.work-list {
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.work-item {
  position: relative;
  width: 19%;
  margin: 3%;
  opacity: 0;
  -moz-transition: opacity 0.6s, -moz-transform 0.6s;
  -o-transition: opacity 0.6s, -o-transform 0.6s;
  -webkit-transition: opacity 0.6s, -webkit-transform 0.6s;
  transition: opacity 0.6s, transform 0.6s;
}
.work-item:nth-child(3n+1) {
  -moz-transform: translate(-40px, 0px);
  -ms-transform: translate(-40px, 0px);
  -webkit-transform: translate(-40px, 0px);
  transform: translate(-40px, 0px);
}
.work-item:nth-child(3n+2) {
  -moz-transform: translate(0px, 40px);
  -ms-transform: translate(0px, 40px);
  -webkit-transform: translate(0px, 40px);
  transform: translate(0px, 40px);
}
.work-item:nth-child(3n) {
  -moz-transform: translate(40px, 0px);
  -ms-transform: translate(40px, 0px);
  -webkit-transform: translate(40px, 0px);
  transform: translate(40px, 0px);
}
.work-item.show {
  opacity: 1;
  -moz-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  -webkit-transform: translate(0px, 0px);
  transform: translate(0px, 0px);
}
.work-img {
  position: relative;
  overflow: hidden;
}
.work-img:after {
  content: "";
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  background: #FFF;
  opacity: 0.3;
  -moz-transform: scaleX(0);
  -ms-transform: scaleX(0);
  -webkit-transform: scaleX(0);
  transform: scaleX(0);
}
.work-item:not(.coming):hover .work-img:after {
  -moz-animation: imgmask 1s forwards;
  -webkit-animation: imgmask 1s forwards;
  animation: imgmask 1s forwards;
}
.work-img img {
  width: 100%;
  -webkit-filter: grayscale(0.8);
  filter: grayscale(0.8);
  -moz-transition: -moz-transform 0.6s;
  -o-transition: -o-transform 0.6s;
  -webkit-transition: -webkit-transform 0.6s;
  transition: transform 0.6s;
}
.work-item:not(.coming):hover .work-img img {
  -moz-transform: scale(1.2);
  -ms-transform: scale(1.2);
  -webkit-transform: scale(1.2);
  transform: scale(1.2);
  -webkit-filter: grayscale(0);
  filter: grayscale(0);
}
.work-info {
  margin-top: 10px;
  margin-right: 40px;
}
.work-info:after {
  content: "";
  display: block;
  height: 1px;
  background: #000;
}
.work-name {
  display: -ms-flexbox;
  display: flex;
  font-size: 0.875em;
  color: #000;
}
.work-logo {
  width: 22px;
  margin-left: 5px;
}
.work-logo img {
  width: 100%;
}
.work-sort {
  color: #999;
  font-size: 0.75em;
}
.work-arrow {
  position: absolute;
  bottom: 0;
  right: 0;
  overflow: hidden;
  width: 40px;
  height: 20px;
}
.work-arrow-inner {
  position: absolute;
  width: 40px;
  height: 20px;
  -moz-transition: -moz-transform 0.6s;
  -o-transition: -o-transform 0.6s;
  -webkit-transition: -webkit-transform 0.6s;
  transition: transform 0.6s;
}
.work-arrow-inner:nth-child(1) {
  left: -40px;
}
.work-arrow-inner:before {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  width: 16px;
  height: 1px;
  background: #999;
}
.work-arrow-inner:after {
  content: "";
  position: absolute;
  top: 7px;
  right: 12px;
  border-left: #999 solid 5px;
  border-top: transparent solid 3px;
  border-bottom: transparent solid 4px;
}
.work-item:hover .work-arrow-inner {
  -moz-transform: translateX(40px);
  -ms-transform: translateX(40px);
  -webkit-transform: translateX(40px);
  transform: translateX(40px);
}

@-moz-keyframes imgmask {
  0% {
    -moz-transform: scaleX(0);
    transform: scaleX(0);
    -moz-transform-origin: left center;
    transform-origin: left center;
  }
  50% {
    -moz-transform: scaleX(1);
    transform: scaleX(1);
    -moz-transform-origin: left center;
    transform-origin: left center;
  }
  50.1% {
    -moz-transform: scaleX(1);
    transform: scaleX(1);
    -moz-transform-origin: right center;
    transform-origin: right center;
  }
  100% {
    -moz-transform: scaleX(0);
    transform: scaleX(0);
    -moz-transform-origin: right center;
    transform-origin: right center;
  }
}
@-webkit-keyframes imgmask {
  0% {
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transform-origin: left center;
    transform-origin: left center;
  }
  50% {
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
    -webkit-transform-origin: left center;
    transform-origin: left center;
  }
  50.1% {
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
    -webkit-transform-origin: right center;
    transform-origin: right center;
  }
  100% {
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transform-origin: right center;
    transform-origin: right center;
  }
}
@keyframes imgmask {
  0% {
    -moz-transform: scaleX(0);
    -ms-transform: scaleX(0);
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -moz-transform-origin: left center;
    -ms-transform-origin: left center;
    -webkit-transform-origin: left center;
    transform-origin: left center;
  }
  50% {
    -moz-transform: scaleX(1);
    -ms-transform: scaleX(1);
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
    -moz-transform-origin: left center;
    -ms-transform-origin: left center;
    -webkit-transform-origin: left center;
    transform-origin: left center;
  }
  50.1% {
    -moz-transform: scaleX(1);
    -ms-transform: scaleX(1);
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
    -moz-transform-origin: right center;
    -ms-transform-origin: right center;
    -webkit-transform-origin: right center;
    transform-origin: right center;
  }
  100% {
    -moz-transform: scaleX(0);
    -ms-transform: scaleX(0);
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -moz-transform-origin: right center;
    -ms-transform-origin: right center;
    -webkit-transform-origin: right center;
    transform-origin: right center;
  }
}
@media screen and (max-width: 1100px) {
  .work-classification {
    max-width: 400px;
    margin: auto;
  }
  .work-inner {
    max-width: 800px;
    margin: auto;
  }
  .work-list {
    margin: -3%;
  }
  .work-item {
    width: 44%;
  }
  .work-item:nth-child(4n+1) {
    -moz-transform: translate(-40px, 0px);
    -ms-transform: translate(-40px, 0px);
    -webkit-transform: translate(-40px, 0px);
    transform: translate(-40px, 0px);
  }
  .work-item:nth-child(4n+2) {
    -moz-transform: translate(0px, 40px);
    -ms-transform: translate(0px, 40px);
    -webkit-transform: translate(0px, 40px);
    transform: translate(0px, 40px);
  }
  .work-item:nth-child(4n+3) {
    -moz-transform: translate(0px, -40px);
    -ms-transform: translate(0px, -40px);
    -webkit-transform: translate(0px, -40px);
    transform: translate(0px, -40px);
  }
  .work-item:nth-child(4n) {
    -moz-transform: translate(40px, 0px);
    -ms-transform: translate(40px, 0px);
    -webkit-transform: translate(40px, 0px);
    transform: translate(40px, 0px);
  }
  .work-item.show {
    -moz-transform: translate(0px, 0px);
    -ms-transform: translate(0px, 0px);
    -webkit-transform: translate(0px, 0px);
    transform: translate(0px, 0px);
  }
}
@media screen and (max-width: 640px) {
  .work-inner {
    max-width: 400px;
  }
  .work-list {
    margin: 0;
  }
  .work-item {
    width: auto;
    margin: 0 0 40px;
  }
  .work-item:last-child {
    margin-bottom: 0;
  }
}