/*intro */
.intro {
  position: fixed;
  top: 0;
  width: 100%;
  height: 100%;
  background: #c5d2ec;
  z-index: 15;
}
.intro-mountain {
  position: absolute;
  bottom: 0;
  width: 100%;
  opacity: 0;
}
.intro-building {
  position: absolute;
  bottom: 0;
  -moz-transform-origin: left bottom;
  -ms-transform-origin: left bottom;
  -webkit-transform-origin: left bottom;
  transform-origin: left bottom;
}
.intro-building-name {
  position: absolute;
  top: 0px;
  left: 50%;
  white-space: nowrap;
  color: #FFF;
  opacity: 0;
  -moz-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}
.intro-building li {
  position: relative;
  float: left;
}
.intro-building img {
  opacity: 0;
  -moz-transition: opacity 1s;
  -o-transition: opacity 1s;
  -webkit-transition: opacity 1s;
  transition: opacity 1s;
}
.intro-building a {
  cursor: default;
}
.intro-logo {
  position: absolute;
  top: 25%;
  left: 50%;
  width: 180px;
  height: 106px;
  margin-left: -90px;
  opacity: 0;
}
.intro-line {
  position: absolute;
  width: 0;
  height: 100%;
  overflow: hidden;
}
.intro-line img {
  position: absolute;
  bottom: 0;
  width: 100vw;
}
.intro-enter {
  position: absolute;
  top: 30%;
  width: 140px;
  left: 50%;
  margin-top: 120px;
  margin-left: -70px;
  text-align: center;
  cursor: pointer;
  opacity: 0;
}
.intro-enter a {
  color: #181d4b;
}
.intro-enter a:hover {
  color: #666;
}
.intro #logo-img path, .intro #logo-img polygon {
  fill: #181d4b;
}

.show-building a {
  cursor: pointer;
}
.show-building:hover .intro-building-name {
  opacity: 1;
}
.show-building img {
  opacity: 1;
}

@media screen and (max-width: 1100px) {
  .intro-building-name {
    display: none;
  }
}
@media screen and (max-width: 600px) {
  .intro-logo {
    width: 150px;
    height: 88px;
    margin-left: -75px;
  }
}
@media screen and (max-width: 600px) and (orientation: portrait) {
  .intro {
    width: 200%;
    margin-left: -50%;
  }
  .intro-line img {
    width: 200vw;
  }
}