body.pro {
  background: #f1f3f7;
}

.main {
  padding-top: 50px;
  padding-bottom: 80px;
  overflow: hidden;
}
.main-right {
  margin: 0 0 0 370px;
}

.pro-nav {
  margin-bottom: 48px;
  padding: 20px 20px;
  background: #fff;
}
.pro-nav ul {
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.pro-nav ul li {
  width: 20%;
  margin: 7px 0;
}
.pro-nav ul li a {
  font-size: 17px;
  color: #333;
  display: block;
  background: #fff;
  line-height: 22px;
  background: url(../images/i4.png) no-repeat left 3px;
  padding: 0 0 0 20px;
}
.pro-nav ul li.active a,
.pro-nav ul li:hover a {
  background-image: url(../images/i4-1.png);
}

.pro-list ul {
  margin: -20px -30px 0;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.pro-list ul li {
  width: 33.33333333%;
  text-align: center;
  padding: 20px 30px;
}
.pro-list ul li .box {
}
.pro-list ul li .pic {
  background: #fff;
  display: block;
  position: relative;
  overflow: hidden;
  height: 227px;
}
.pro-list ul li .pic > img {
  width: 100%;
  display: block;
  transition: transform 0.5s;
  -webkit-transition: transform 0.5s;
}
.pro-list ul li .txt {
  padding: 15px 20px;
  text-align: center;
}
.pro-list ul li .txt h6 {
  font-size: 18px;
  color: #000;
}
.pro-list ul li .txt h6 a {
  display: block;
  line-height: 60px;
  height: 60px;
  overflow: hidden;
}
.pro-list ul li .txt h6 a:hover {
  color: var(--color-primary);
}

.pro-list ul li:hover .box {
}
.pro-list ul li:hover .pic > img {
  transform: scale(1.03);
  -webkit-transform: scale(1.03);
}
.pro-list ul li:hover .txt h6 a {
  color: var(--color-primary);
}
.pro-list ul li:hover .pic .big {
  opacity: 1;
}

.rtit {
  text-align: center;
  margin-bottom: 40px;
}
.rtit h1 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
}
.rtit h1::after {
  content: "";
  width: 40px;
  height: 4px;
  background: var(--color-primary);
  margin: 15px auto 0;
  display: block;
}

@media screen and (max-width: 1441px) {
  .main-right {
    margin: 0 0 0 300px;
  }
  .rtit h1 {
    font-size: 48px;
  }
}

@media screen and (max-width: 1367px) {
  .rtit h1 {
    font-size: 44px;
  }

  .pro-nav ul li a {
    font-size: 16px;
  }

  .pro-list ul {
    margin: -20px -20px 0;
  }
  .pro-list ul li {
    padding: 20px 20px;
  }
}

@media screen and (max-width: 1281px) {
  .rtit h1 {
    font-size: 40px;
  }
  .main-right {
    margin: 0 0 0 270px;
  }
}

@media screen and (max-width: 1171px) {
  .rtit h1 {
    font-size: 36px;
  }
}

@media screen and (max-width: 992px) {
  .main-right {
    margin: 0;
  }

  .rtit h1 {
    font-size: 32px;
  }

  .pro-list ul {
    margin: -15px -15px 0;
  }
  .pro-list ul li {
    padding: 15px;
  }
}

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

  .rtit {
    margin-bottom: 25px;
  }
  .rtit h1 {
    font-size: 28px;
  }

  .pro-nav {
    margin-bottom: 25px;
    padding: 15px;
  }
  .pro-nav ul li {
    width: 33.33333%;
    margin: 6px 0;
  }
  .pro-nav ul li a {
    font-size: 16px;
    background-size: 12px;
    background-position: left 5px;
    padding: 0 0 0 17px;
  }

  .pro-list ul {
    margin: -10px -10px 0;
  }
  .pro-list ul li {
    width: 50%;
    padding: 10px 10px;
  }
  .pro-list ul li .txt {
    padding: 15px 0 0;
  }
  .pro-list ul li .txt h6 {
    font-size: 17px;
  }
  .pro-list ul li .txt h6 a {
    line-height: 30px;
    height: 30px;
  }
}

@media screen and (max-width: 600px) {
  .rtit h1 {
    font-size: 26px;
  }

  .pro-nav ul li {
    width: 50%;
  }
}

@media screen and (max-width: 480px) {
  .rtit h1 {
    font-size: 24px;
  }
}