.header {
  background: #222;
}

.work {
  min-height: calc(100vh - 275px);
}
.work-sort {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  line-height: 25px;
  padding: 5px 8%;
  text-align: center;
  box-sizing: border-box;
  background: #2f2f2f;
  z-index: -1;
  opacity: 0;
  -moz-transition: opacity 0.6s;
  -o-transition: opacity 0.6s;
  -webkit-transition: opacity 0.6s;
  transition: opacity 0.6s;
}
.work-sort.show {
  opacity: 1;
}
.work-sort a {
  display: inline-block;
  position: relative;
  font-size: 0.75em;
  margin: 0 10px;
  color: #bbb;
}
.work-sort a .tw {
  position: absolute;
  left: 50%;
  white-space: nowrap;
  -moz-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  opacity: 0;
}
.work-sort a .tw, .work-sort a .en {
  -moz-transition: opacity 0.3s;
  -o-transition: opacity 0.3s;
  -webkit-transition: opacity 0.3s;
  transition: opacity 0.3s;
}
.work-sort a:hover, .work-sort a.active {
  color: #FFF;
}
.work-sort a:hover .tw {
  opacity: 1;
}
.work-sort a:hover .en {
  opacity: 0;
}
.work-list {
  margin-top: 175px;
  padding: 40px 8%;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.work-item {
  position: relative;
  margin: 5px;
  -moz-transition: opacity 0.6s;
  -o-transition: opacity 0.6s;
  -webkit-transition: opacity 0.6s;
  transition: opacity 0.6s;
}
.work-item:hover {
  z-index: 2;
}
.work-item.onhover {
  opacity: 0.2;
}
.work-img {
  position: relative;
  overflow: hidden;
  -webkit-filter: saturate(0.6);
  filter: saturate(0.6);
  opacity: 0.8;
  -moz-transition: opacity 0.6s, -moz-transform 0.4s linear, filter 0.6s;
  -o-transition: opacity 0.6s, -o-transform 0.4s linear, filter 0.6s;
  -webkit-transition: opacity 0.6s, -webkit-transform 0.4s linear, filter 0.6s;
  transition: opacity 0.6s, transform 0.4s linear, filter 0.6s;
}
.work-img img {
  width: 120%;
  margin: 0 -10%;
  -moz-transition: width 0.4s linear, margin 0.4s linear;
  -o-transition: width 0.4s linear, margin 0.4s linear;
  -webkit-transition: width 0.4s linear, margin 0.4s linear;
  transition: width 0.4s linear, margin 0.4s linear;
}
.work-img:hover {
  -webkit-filter: saturate(1);
  filter: saturate(1);
  opacity: 1;
  -moz-transform: scale(1.5) translateY(5%);
  -ms-transform: scale(1.5) translateY(5%);
  -webkit-transform: scale(1.5) translateY(5%);
  transform: scale(1.5) translateY(5%);
}
.work-img:hover img {
  width: 100%;
  margin: 0;
}
.work-img:after {
  content: "";
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  background: #222;
  -moz-transition: width 0.6s;
  -o-transition: width 0.6s;
  -webkit-transition: width 0.6s;
  transition: width 0.6s;
}
.show .work-img:after {
  width: 0;
}
.work-info {
  position: absolute;
  bottom: 10%;
}
.work-info:after {
  position: absolute;
  bottom: 0;
  left: 0;
  content: "";
  width: 0%;
  height: 1px;
  background: #FFF;
  display: block;
  -moz-transition: width 0.6s 0.8s;
  -o-transition: width 0.6s 0.8s;
  -webkit-transition: width 0.6s;
  -webkit-transition-delay: 0.8s;
  transition: width 0.6s 0.8s;
}
.work-info.onhover:after {
  width: 100%;
}
.work-name {
  color: #FFF;
  font-size: 0.875em;
  white-space: nowrap;
  margin: 5px 0;
  opacity: 0;
  -moz-transition: opacity 0.6s 0.6s;
  -o-transition: opacity 0.6s 0.6s;
  -webkit-transition: opacity 0.6s;
  -webkit-transition-delay: 0.6s;
  transition: opacity 0.6s 0.6s;
}
.work-info.onhover .work-name {
  opacity: 1;
}
.work-subsort {
  white-space: nowrap;
  font-size: 0.75em;
  color: #999;
  opacity: 0;
  -moz-transition: opacity 0.6s 0.4s;
  -o-transition: opacity 0.6s 0.4s;
  -webkit-transition: opacity 0.6s;
  -webkit-transition-delay: 0.4s;
  transition: opacity 0.6s 0.4s;
}
.work-info.onhover .work-subsort {
  opacity: 1;
}

@media screen and (min-width: 1101px) {
  .work-item {
    width: calc(14.28% - 10px);
  }
  .work-item:nth-child(13n+1) {
    margin-left: calc(7.14% + 5px);
  }
  .work-item:nth-child(13n+4) .work-info, .work-item:nth-child(13n+5) .work-info, .work-item:nth-child(13n+6) .work-info, .work-item:nth-child(13n+11) .work-info, .work-item:nth-child(13n+12) .work-info, .work-item:nth-child(13n+13) .work-info {
    right: 125%;
    margin-right: -40px;
    padding-right: 60px;
  }
  .work-item:nth-child(13n+1) .work-info, .work-item:nth-child(13n+2) .work-info, .work-item:nth-child(13n+3) .work-info, .work-item:nth-child(13n+7) .work-info, .work-item:nth-child(13n+8) .work-info, .work-item:nth-child(13n+9) .work-info, .work-item:nth-child(13n+10) .work-info {
    left: 125%;
    margin-left: -40px;
    padding-left: 60px;
  }
}
@media screen and (max-width: 1100px) and (min-width: 861px) {
  .work-list {
    max-width: 900px;
  }

  .work-item {
    width: calc(25% - 10px);
  }
  .work-item:nth-child(7n+1) {
    margin-left: calc(12.5% + 5px);
  }
}
@media screen and (max-width: 860px) and (min-width: 641px) {
  .work-list {
    max-width: 720px;
  }

  .work-item {
    width: calc(33.3333% - 10px);
  }
  .work-item:nth-child(5n+1) {
    margin-left: calc(16.6666% + 5px);
  }
}
@media screen and (max-width: 1100px) {
  .work-list {
    padding: 20px 15px;
    margin: 115px auto 0;
  }
  .work-item {
    margin: 20px 5px;
  }
  .work-item.onhover {
    opacity: 1;
  }
  .work-img img {
    width: 100%;
    margin: 0;
    -moz-transition: -moz-transform 1s;
    -o-transition: -o-transform 1s;
    -webkit-transition: -webkit-transform 1s;
    transition: transform 1s;
  }
  .work-item:hover .work-img img {
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
  .work-img:hover {
    -moz-transform: none;
    -ms-transform: none;
    -webkit-transform: none;
    transform: none;
  }
  .work-item:hover .work-img {
    opacity: 1;
    -webkit-filter: saturate(1);
    filter: saturate(1);
  }
  .work-info {
    position: relative;
    bottom: auto;
    margin-top: -20px;
    padding: 30px 0 0 15px;
    opacity: 0;
    -moz-transition: opacity 0.6s 0.3s;
    -o-transition: opacity 0.6s 0.3s;
    -webkit-transition: opacity 0.6s;
    -webkit-transition-delay: 0.3s;
    transition: opacity 0.6s 0.3s;
  }
  .show .work-info {
    opacity: 1;
  }
  .work-info:after {
    width: 1px;
    height: 100%;
    top: 0;
    left: 5px;
    background: #666;
  }
  .work-subsort {
    opacity: 1;
    white-space: normal;
  }
  .work-name {
    opacity: 1;
    white-space: normal;
    margin: 0;
  }
}
@media screen and (max-width: 640px) {
  .work-item {
    width: calc(50% - 10px);
  }
}
@media screen and (max-width: 400px) {
  .work-item {
    width: 100%;
    margin: 20px 5px;
  }
}