body {
  background-color: #f0f8fe;
}

.nav-bg {
  width: 100%;
  background: #fff;
}

.support-nav {
  width: 500px;
  margin: 0 auto;
  font-size: 18px;
}

.support-nav li {
  display: block;
  color: #333;
  height: 54px;
  line-height: 54px;
  cursor: pointer;
  padding: 0 20px;
}

.support-nav-active {
  border-bottom: 3px solid #387df4;
}

/* 售后服务  ---start */
.support .after-sale {
  margin: 60px 0 50px;
  color: #fff;
  display: block;
}

.support .after-sale ul li {
  width: 390px;
  height: 500px;
  background: url('../img/support_list_bg_1.jpg') no-repeat center;
  background-size: 100% 100%;
  text-align: center;
  position: relative;
  box-sizing: border-box;
  padding: 0 60px;
  transition: 0.3s;
}

.support .after-sale ul li .bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.2);
  z-index: 1;
  display: none;
  transition: 0.3s;
}

.support .after-sale ul li:hover .bg {
  display: block;
}

.support .after-sale ul li:nth-child(2) {
  width: 390px;
  height: 500px;
  background: url('../img/support_list_bg_2.jpg') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li:nth-child(3) {
  width: 390px;
  height: 500px;
  background: url('../img/support_list_bg_3.jpg') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li .img {
  transition: 0.3s;
  width: 70px;
  height: 60px;
  background: url('../img/supervise1.png') no-repeat center;
  background-size: 100% 100%;
  margin: 107px auto 0;
}

.support .after-sale ul li .img2 {
  width: 51px;
  height: 63px;
  background: url('../img/supervise2.png') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li .img3 {
  width: 50px;
  height: 60px;
  background: url('../img/supervise3.png') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li:hover .img {
  margin-top: 70px;
  background: url('../img/supervise1_on.png') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li:hover .img2 {
  background: url('../img/supervise2_on.png') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li:hover .img3 {
  background: url('../img/supervise3_on.png') no-repeat center;
  background-size: 100% 100%;
}

.support .after-sale ul li .show-detial {
  display: none;
  line-height: 32px;
  margin-top: 50px;
  transition: 0.3s;
}

.support .after-sale ul li:hover .show-detial {
  display: block;
}

.support .after-sale ul li .line {
  width: 20px;
  height: 2px;
  background-color: #fff;
  margin: 28px auto 25px;
}

.support .after-sale ul li:nth-child(2) .img2 {
  width: 70px;
  height: 60px;
}

.support .after-sale ul li .img3 {
  width: 70px;
  height: 60px;
}

.support .after-sale ul li .tit {
  font-size: 22px;
  font-weight: bold;
}

.support .after-sale ul li .detail {
  margin-top: 70px;
}

.support .after-sale ul li:hover .detail {
  display: none;
}

/* 售后服务  ---end */

/* 技术服务  ---start */
.technology {
  display: block;
}

.patrol {
  padding: 60px 0 40px;
  box-sizing: border-box;
}

.patrol-left .title {
  font-size: 32px;
  color: #333;
  text-align: center;
  margin-bottom: 30px;
}

.patrol-left .detail {
  width: 780px;
  font-size: 16px;
  color: #666;
  line-height: 36px;
}

.characteristic {
  width: 100%;
  height: 482px;
  background-color: #fff;
}

.characteristic ul {
  margin-top: 50px;
}

.characteristic ul li {
  width: 276px;
  height: 280px;
  background: rgba(245, 249, 255, 1);
  box-shadow: 0px 3px 10px 0px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: 0.3s;
}

.characteristic ul li:hover {
  margin-top: -20px;
}

.characteristic ul li img {
  margin-top: 66px;
}

.characteristic ul li .tit {
  margin-top: 60px;
}

.fwgn-wrap ul {
  margin: 50px auto 60px;
  text-align: center;
}

.fwgn-wrap ul li {
  width: 378px;
  height: 390px;
  background-color: #fff;
  padding: 60px 45px 50px;
  box-sizing: border-box;
  transition: 0.3s;
}

.fwgn-wrap ul li:hover {
  margin-top: -20px;
}

.fwgn-wrap ul li .tit {
  font-size: 24px;
  text-align: center;
  margin: 40px auto 20px;
}

.fwgn-wrap ul li p {
  line-height: 32px;
}

/* 技术服务  ---end */

/* 安全咨询  ---start */
.security {
  display: block;
  padding: 60px 50px;
  height: 750px;
}

.security ul li {
  width: 276px;
  height: 366px;
  background: url('../img/security_bg_1.jpg') no-repeat center;
  background-size: 100% 100%;
  color: #fff;
  text-align: center;
}

.security ul li:nth-child(2) {
  width: 276px;
  height: 366px;
  background: url('../img/security_bg_2.jpg') no-repeat center;
  background-size: 100% 100%;
}

.security ul li:nth-child(3) {
  width: 276px;
  height: 366px;
  background: url('../img/security_bg_3.jpg') no-repeat center;
  background-size: 100% 100%;
}

.security ul li:nth-child(4) {
  width: 276px;
  height: 366px;
  background: url('../img/security_bg_4.jpg') no-repeat center;
  background-size: 100% 100%;
}

.security ul li .img {
  margin: 60px auto 65px;
  width: 130px;
  height: 128px;
  background: url('../img/security1.png') no-repeat center;
  background-size: 100% 100%;
  transition: 0.3s;
}

.security ul li:hover .img {
  background: url('../img/security1_on.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li .img2 {
  background: url('../img/security2.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li:hover .img2 {
  background: url('../img/security2_on.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li .img3 {
  background: url('../img/security3.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li:hover .img3 {
  background: url('../img/security3_on.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li .img4 {
  background: url('../img/security4.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li:hover .img4 {
  background: url('../img/security4_on.png') no-repeat center;
  background-size: 100% 100%;
}

.security ul li .tit {
  font-size: 24px;
}

.security-detail {
  height: 248px;
  background: url('../img/consult_bg_img_1.png') no-repeat center;
  background-size: 100% 100%;
  padding: 45px 55px 55px;
  box-sizing: border-box;
  margin-top: 22px;
  display: block;
}

.security-detail .tit {
  font-size: 24px;
  margin-bottom: 15px;
}

.security-detail .detail {
  color: #666;
}

.security-detail span {
  display: block;
  background: url('../img/coop_circle.png') no-repeat left center;
  font-size: 14px;
  margin-top: 6px;
  padding: 0 0 0 20px;
}

.security-detail2 {
  background: url('../img/consult_2.png') no-repeat center;
  background-size: 100% 100%;
}

.security-detail3 {
  background: url('../img/consult_3.png') no-repeat center;
  background-size: 100% 100%;
}

.security-detail4 {
  background: url('../img/consult_4.png') no-repeat center;
  background-size: 100% 100%;
}

.security-detail2,
.security-detail3,
.security-detail4 {
  display: none;
}

/* 安全咨询  ---end */
@media only screen and (max-width: 1440px) {

  .support .after-sale ul li,
  .support .after-sale ul li:nth-child(2),
  .support .after-sale ul li:nth-child(3) {
    width: 292px;
    height: 375px;
    padding: 0 60px;
  }

  .support .after-sale ul li .img {
    margin: 60px auto 0;
  }

  .support .after-sale ul li .line {
    margin: 20px auto 15px;
  }

  .support .after-sale ul li .detail {
    margin-top: 30px;
  }

  .support .after-sale ul li .show-detial {
    margin-top: 20px;
    line-height: 20px;
  }

  .patrol-left .detail {
    width: 585px;
  }

  .patrol-right {
    margin-top: 30px;
  }

  .characteristic {
    height: 361px;
  }

  .characteristic ul {
    margin-top: 30px;
  }

  .characteristic ul li {
    width: 207px;
    height: 210px;
  }

  .characteristic ul li img,
  .characteristic ul li .tit {
    margin-top: 40px;
  }

  .fwgn-wrap ul {
    margin: 30px auto 40px;
  }

  .fwgn-wrap ul li {
    width: 284px;
    height: 292px;
    padding: 20px 25px 30px;
  }

  .fwgn-wrap ul li img {
    transform: scale(0.9);
  }

  .fwgn-wrap ul li .tit {
    font-size: 20px;
    margin: 10px auto;
  }

  .fwgn-wrap ul li p {
    line-height: 24px;
  }

  .security {
    height: 562px;
    padding: 30px 20px;
  }

  .security ul li,
  .security ul li:nth-child(2),
  .security ul li:nth-child(3),
  .security ul li:nth-child(4) {
    width: 207px;
    height: 274px;
  }

  .security ul li .img {
    transform: scale(0.8);
    margin: 40px auto 30px;
  }

  .security-detail {
    height: 186px;
    padding: 20px 30px 35px;
  }

  .security-detail .tit {
    font-size: 20px;
    margin-bottom: 10px;
  }

  .security-detail .detail {
    font-size: 14px;
  }

  .security-detail span {
    font-size: 12px;
  }
}

@media only screen and (max-width: 1280px) {
  .support .after-sale ul li {
    width: 262px;
    height: 335px;
    padding: 0 20px;
  }

  .support .after-sale ul li:nth-child(2) .support .after-sale ul li .img {
    width: 47px;
    height: 40px;
    margin: 40px auto 0;
  }

  .support .after-sale ul li .line {
    margin: 18px auto 15px;
  }

  .support .after-sale ul li .tit {
    font-size: 18px;
  }

  .support .after-sale ul li .detail {
    margin-top: 40px;
  }

  .support .after-sale ul li .show-detial {
    line-height: 20px;
    margin-top: 20px;
  }

  .support .after-sale ul li:hover .show-detial {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }

  .support .after-sale ul li:nth-child(2),
  .support .after-sale ul li:nth-child(3) {
    width: 262px;
    height: 335px;
  }

  .patrol {
    padding: 30px 0;
  }

  .patrol-left .detail {
    width: 500px;
    font-size: 16px;
    line-height: 25px;
  }

  .patrol-right img {
    width: 175px;
    height: 184px;
    margin-top: 20px;
  }

  .patrol-left .title {
    font-size: 20px;
    margin-bottom: 15px;
  }

  .characteristic {
    height: 340px;
  }

  .characteristic ul {
    margin-top: 30px;
  }

  .characteristic ul li {
    width: 185px;
    height: 188px;
  }

  .characteristic ul li img {
    margin-top: 30px;
  }

  .characteristic ul li .tit {
    margin-top: 20px;
  }

  .fwgn-wrap ul li {
    width: 250px;
    height: 260px;
    padding: 30px 20px 25px;
  }

  .fwgn-wrap ul li img {
    width: 100px;
    height: 78px;
  }

  .fwgn-wrap ul li .tit {
    font-size: 20px;
    margin: 10px auto 10px;
  }

  .fwgn-wrap ul li p {
    line-height: 20px;
  }

  .security {
    height: 600px;
    padding: 40px 20px;
  }

  .security ul li,
  .security ul li:nth-child(2),
  .security ul li:nth-child(3),
  .security ul li:nth-child(4) {
    width: 185px;
    height: 245px;
  }

  .security ul li .img {
    width: 88px;
    height: 86px;
    margin: 30px auto;
  }

  .security ul li .tit {
    font-size: 20px;
  }

  .security-detail {
    padding: 30px 25px;
    height: 220px;
  }

  .security-detail .tit {
    font-size: 20px;
    margin-bottom: 10px;
  }
}

@media only screen and (max-width: 1024px) {
  .support .after-sale ul li {
    width: 206px;
    height: 265px;
    padding: 0 15px;
  }

  .support .after-sale ul li .img {
    width: 35px;
    height: 30px;
    margin: 30px auto 0;
  }

  .support .after-sale ul li:nth-child(2) .img2 {
    width: 35px;
    height: 30px;
  }

  .support .after-sale ul li .line {
    margin: 15px auto 10px;
  }

  .support .after-sale ul li .tit {
    font-size: 16px;
  }

  .support .after-sale ul li .detail {
    margin-top: 20px;
    font-size: 12px;
  }

  .support .after-sale ul li .show-detial {
    line-height: 18px;
    margin-top: 10px;
    font-size: 12px;
  }

  .support .after-sale ul li:hover .show-detial {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }

  .support .after-sale ul li:nth-child(2),
  .support .after-sale ul li:nth-child(3) {
    width: 206px;
    height: 265px;
  }

  .patrol {
    padding: 30px 0;
  }

  .patrol-left .detail {
    width: 450px;
    font-size: 16px;
    line-height: 25px;
  }

  .patrol-right img {
    width: 150px;
    height: 160px;
    margin-top: 30px;
  }

  .characteristic {
    height: 300px;
  }

  .characteristic ul {
    margin-top: 30px;
  }

  .characteristic ul li {
    width: 146px;
    height: 148px;
  }

  .characteristic ul li img {
    margin-top: 30px;
    width: 35px;
    height: 35px;
  }

  .characteristic ul li .tit {
    margin-top: 10px;
    font-size: 12px;
  }

  .fwgn-wrap ul {
    margin: 30px auto 40px;
  }

  .fwgn-wrap ul li {
    width: 200px;
    height: 240px;
    padding: 10px;
  }

  .fwgn-wrap ul li img {
    width: 70px;
    height: 60px;
  }

  .fwgn-wrap ul li .tit {
    font-size: 16px;
    margin: 10px auto;
  }

  .fwgn-wrap ul li p {
    line-height: 20px;
    font-size: 14px;
  }

  .security {
    height: 560px;
    padding: 40px 20px;
  }

  .security ul li,
  .security ul li:nth-child(2),
  .security ul li:nth-child(3),
  .security ul li:nth-child(4) {
    width: 144px;
    height: 194px;
  }

  .security ul li .img {
    width: 79px;
    height: 76px;
    margin: 20px auto;
  }

  .security ul li .tit {
    font-size: 16px;
  }

  .security-detail {
    padding: 30px 20px 0;
    font-size: 14px;
    height: 240px;
  }

  .security-detail .tit {
    font-size: 16px;
    margin-bottom: 10px;
  }
}