*{
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

.Introduction{
  width: 100%;
  margin: 0 auto;
  max-width: 80rem;
  font-size: 16px;
  font-family: 微軟正黑體, 蘋果儷中黑, "Lucida Grande", Arial, "Arial Narrow";
}

.cols{
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.col{
  width: calc(100%/4 - 3rem);
  margin: 0.5rem;
  cursor: pointer;
}

.container{
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-perspective: 1000px;
  perspective: 1000px;
}

.front,
.back{
  background-size: cover;
  background-position: center;
  -webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
  transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
  -o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
  transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
  transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  text-align: center;
  min-height: 270px;
  height: auto;
  border-radius: 10px;
  color: #fff;
  font-size: 1.5rem;
  border-radius: 8%;
}

.back{
  background: #ffffff;
}

.front:after{
	position: absolute;
	top: 0;
	left: 0;
	z-index: 1;
	width: 100%;
	height: 100%;
	content: '';
	display: block;
	opacity: .6;
	/* background-color: #000; */
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	border-radius: 10px;
}
.container:hover .front,
.container:hover .back{
    -webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    -o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
}

.back{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}
.back
.inner{
    -webkit-transform: translateY(-50%) translateZ(60px) scale(0.94);
    transform: translateY(-50%) translateZ(60px) scale(0.94);
    top: 55%;
    position: absolute;
    left: 0;
    width: 100%;
    padding: 2rem;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 1px solid transparent;
    -webkit-perspective: inherit;
    perspective: inherit;
    z-index: 2;
    text-align: center;
}
.inner{
    -webkit-transform: translateY(-50%) translateZ(60px) scale(0.94);
    transform: translateY(-50%) translateZ(60px) scale(0.94);
    top: 65%;
    position: absolute;
    left: 0;
    width: 100%;
    padding: 1rem;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 1px solid transparent;
    -webkit-perspective: inherit;
    perspective: inherit;
    z-index: 2;
    text-align: center;
}
.inner p{
    font-size: 1.1rem;
    line-height: 170%;
	text-align:center;
}

.container .back{
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.container .back .backbg{
	position: absolute;
	width: 100%;
	height: 100%;
}
.container .back .backbg img{width: 100%;height: 100%;object-fit: cover;border-radius: 10px;}
.col:nth-child(1) .container .front{
	border: 2px rgb(255, 156, 194) solid;
}
.col:nth-child(2) .container .front{
	border: 2px #aedeff solid;
}
.col:nth-child(3) .container .front{
	border: 2px #fce6a1 solid;
}
.col:nth-child(4) .container .front{
	border: 2px #c7e48f solid;
}
.container .front{
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    border: 2px rgb(255, 156, 194) solid;
}

.container:hover .back{
  -webkit-transform: rotateY(0deg);
          transform: rotateY(0deg);
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}

.container:hover .front{
  -webkit-transform: rotateY(-180deg);
          transform: rotateY(-180deg);
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}
.back .inner h3,.front .inner h2{
  font-size: 18px;
  position: relative;
  text-align: center;
  line-height: 160%;
  font-weight: 500;
  letter-spacing: .1em;
  color: #383838;
  margin-bottom: 10px;
}

.front .inner h2:after{
  content: '';
  width: 4rem;
  height: 82px;
  position: absolute;
  background-image: url(/images/18/ico01.png);
  display: block;
  left: 0;
  right: 0;
  margin: 0 auto;
  bottom: 2.25rem;
}
.col:nth-child(2) .container .front .inner h2:after{
  background-image: url(/images/18/ico02.png);
}
.col:nth-child(3) .container .front .inner h2:after{
  background-image: url(/images/18/ico03.png);
}
.col:nth-child(4) .container .front .inner h2:after{
  background-image: url(/images/18/ico04.png);
}
.col:nth-child(1) .container .back {background-image: url(/images/18/img-01.jpg);background-repeat: no-repeat;background-position: 50% 50%;background-size: cover;}
.col:nth-child(2) .container .back {background-image: url(/images/18/img-02.jpg);background-repeat: no-repeat;background-position: 50% 50%;background-size: cover;}
.col:nth-child(3) .container .back {background-image: url(/images/18/img-03.jpg);background-repeat: no-repeat;background-position: 50% 50%;background-size: cover;}
.col:nth-child(4) .container .back {background-image: url(/images/18/img-04.jpg);background-repeat: no-repeat;background-position: 50% 50%;background-size: cover;}
.front .inner p{
  color: rgba(68, 68, 68, 0.94);
  font-weight: 300;
  font-size: 14px;
  line-height: 170%;
}

@media screen and (max-width: 64rem){
  .col{
    width: calc(50% - 2rem);
  }
}

@media screen and (max-width: 48rem){
  .col{
    width: calc(50% - 2rem);
  }
}

@media screen and (max-width: 32rem){
  .col{
    width: 100%;
    margin: 0  0.9rem 8px;
  }
}
@media screen and (max-width: 1024px) {
	.front, .back {
		min-height: 280px;
	}
	.front .inner span {
		font-size: 16px;
	}
	.front .inner p {
	}
}
@media screen and (max-width: 768px){
	.front .inner h2,
.back .inner h3{
  font-size: 1rem;
}
.front .inner h2:after {
    content: '';
    width: 3.5rem;
    height: 78px;
    position: absolute;
    background-image: url(/images/18/ico01.png);
    background-repeat: no-repeat;
    background-size: 70px;
    display: block;
    left: 0;
    right: 0;
    margin: 0 auto;
    bottom: 2.25rem;
}
}
@media screen and (max-width: 450px){
	.front .inner span {
		font-size: 12px;
	}
	.front .inner p {
		font-size: 15px;
	}
	.front, .back {
		min-height: 300px;
	}
}
@media screen and (max-width: 375px){
	.front, .back {
		min-height: 225px;
	}
	.inner p {
		font-size: 16px;
		line-height: 170%;
	}
}