.main {
  padding-top: 50px;
  padding-bottom: 60px;
}

.prolist-box {
  padding: 70px 0;
}

.prolist-box h2 {
  font-size: 48px;
  color: #000;
  line-height: 1;
  font-weight: 700;
  text-align: center;
}

.prolist-nav {
  margin-top: 45px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}

.prolist-nav li {
  font-size: 24px;
  color: #7c7c7c;
  font-weight: 300;
}

.prolist-nav li+li {
  margin-left: 90px;
}

.prolist-nav li a {
  color: #7c7c7c;
}

.prolist-nav li.active a {
  color: var(--color-primary);
}

.videolist {
  margin-top: 20px;
}
.videolist .cl {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.videolist .clear {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.videolist ul li {
  width: 31%;
  margin-bottom: 24px;
  margin-right: 2%;
}

.videolist ul li .v {
  position: relative;
  width: 100%;
  display: block;
  overflow: hidden;
}

.videolist ul li .v img {
  width: 100%;
  display: block;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.videolist ul li .v .play {
  position: absolute;
  left: calc(50% - 25px);
  top: calc(50% - 25px);
  width: 50px;
  height: 50px;
  display: block;
}

.videolist ul li .t {
  padding: 15px 10px;
  background: #f3f4f7;
  box-sizing: border-box;
  position: relative;
  min-height: 82px;
}

.videolist ul li .t h5 {
  font-size: 17px;
  color: #333;
  text-align: center;
  display: -webkit-box;
  overflow: hidden;
  white-space: normal !important;
  text-overflow: ellipsis;
  word-wrap: break-word;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.videolist ul li:hover .v::after {
  background-color: rgba(0, 0, 0, 0.5);
}

.videolist ul li:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
}

@media screen and (max-width: 1441px) {
  .prolist-box h2 {
    font-size: 44px;
  }

  .prolist-nav li {
    font-size: 22px;
  }

  .prolist-nav li+li {
    margin-left: 70px;
  }
}

@media screen and (max-width: 1367px) {
  .prolist-box h2 {
    font-size: 40px;
  }
}

@media screen and (max-width: 1281px) {
  .prolist-box h2 {
    font-size: 36px;
  }
}

@media screen and (max-width: 992px) {
  .prolist-box h2 {
    font-size: 32px;
  }
}

@media screen and (max-width: 768px) {
  .main {
    padding-top: 25px;
    padding-bottom: 30px;
  }

  .prolist-box h2 {
    font-size: 28px;
  }

  .prolist-box {
    padding: 30px 0;
  }

  .prolist-nav {
    margin-top: 25px;
  }

  .prolist-nav li {
    font-size: 18px;
  }

  .prolist-nav li+li {
    margin-left: 20px;
  }

  .main {
    padding-top: 25px;
    padding-bottom: 30px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }
}

@media screen and (max-width: 576px) {
  .prolist-box h2 {
    font-size: 24px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}

@media screen and (max-width: 480px) {
  .prolist-box h2 {
    font-size: 22px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}

@media screen and (max-width: 400px) {
  .videolist ul {
    margin: 0;
  }

  .videolist ul li {
    float: none;
    width: 100%;
    margin: 0 0 15px;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}