@charset "UTF-8";
.top {
  width: 1048px;
  margin: 0 auto;
}

.i-cont {
  background: #ebebeb;
}

#header {
  background: url(../images/top.png) repeat-x top center;
}

#header .wel {
  line-height: 27px;
  color: #171717;
  font-size: 13px;
}

#header .wel a {
  color: #171717;
}

#header .logo {
  float: left;
}

#header .topLink {
  float: right;
  text-align: left;
  margin-top: 50px;
}

#header .topLink .k2 {
  background: url(../images/k2.png) no-repeat left center;
  color: #000000;
  font-size: 14px;
  padding-left: 60px;
}

#header .topLink .k2 span {
  color: #8b0000;
  font-weight: bold;
}

#header #menu .nav {
  text-align: center;
}

#header #menu .nav li {
  padding-top: 1px;
  line-height: 38px;
  display: inline-block;
  font-size: 0;
  width: 100px;
  margin: 0 8px;
}

#header #menu .nav li a {
  display: block;
  line-height: 38px;
  color: #ffffff;
  font-size: 14px;
}

#header #menu .nav li .sec {
  display: none;
}

#header #menu .nav li:hover {
  background: url(../images/nva.png) no-repeat top center;
}

/*首页banner*/
.topbanner {
  height: 567px;
  position: relative;
}

.topbanner .banner {
  width: 1440px;
  position: absolute;
  left: 50%;
  margin-left: -720px;
  height: 567px;
}

.topbanner .banner ul.bb {
  position: relative;
  padding: 0px;
  margin: 0px;
  z-index: 5;
}

.topbanner .banner ul.bb li {
  position: absolute;
  display: none;
}

.topbanner .banner .num {
  position: absolute;
  width: 100%;
  text-align: center;
  bottom: 28px;
  z-index: 100;
}

.topbanner .banner .num li {
  width: 16px;
  height: 16px;
  display: inline-block;
  margin-right: 6px;
  background: #343434;
  line-height: 18px;
  text-indent: -100px;
  overflow: hidden;
  border-radius: 50%;
}

.topbanner .banner .num li.num_hover {
  background-color: #7e0404;
}

.topbanner .banner .num li.num_hover a {
  color: #fff;
}

/*首页产品*/
.i-product {
  margin-top: 70px;
}

.i-product h2 {
  text-align: center;
  color: #000000;
  font-size: 33px;
}

.i-product h2 p {
  color: #8b0000;
  font-size: 17px;
  text-transform: uppercase;
}

.i-product h2 a {
  display: block;
  width: 108px;
  height: 29px;
  line-height: 29px;
  text-align: center;
  background: #fff;
  color: #2c2b2b;
  font-size: 14px;
  margin: 8px auto;
}

.i-product .content {
  background: url(../images/product.jpg) no-repeat top center;
  height: 229px;
  margin-top: 32px;
  box-sizing: border-box;
  padding: 10px 71px 0 66px;
}

.i-product .content h3 {
  color: #8b0000;
  font-size: 17.3px;
  line-height: 56px;
  border-bottom: 1px solid #a0a0a0;
}

.i-product .content .i-sort {
  padding: 20px 20px;
}

.i-product .content .i-sort li {
  background: url(../images/n.jpg) no-repeat left center;
  padding-left: 16px;
  line-height: 35px;
  float: left;
  width: 18%;
}

.i-product .content .i-sort li a {
  color: #010101;
  font-size: 15px;
}

.i-product .content .i-sort li:hover a {
  color: #8b0000;
}

.i-product .i-product-list {
  width: 105%;
  margin-top: 15px;
}

.i-product .i-product-list li {
  float: left;
  margin-right: 24px;
  border: 1px solid #c7c7c7;
  margin-bottom: 13px;
}

.i-product .i-product-list li img {
  width: 240px;
  height: 185px;
}

.i-product .i-product-list li h3 {
  line-height: 45px;
  text-align: center;
  font-weight: normal;
}

.i-product .i-product-list li h3 a {
  color: #393939;
  font-size: 15px;
}

/*首页工程案例*/
.i-case {
  height: 710px;
  background: url(../images/case.jpg) no-repeat top center;
  margin-top: 20px;
}

.i-case h2 {
  padding-top: 78px;
  text-align: center;
  color: #fff;
  font-size: 33px;
}

.i-case h2 p {
  color: #c8c8c8;
  font-size: 17px;
  text-transform: uppercase;
}

.i-case h2 a {
  display: block;
  width: 108px;
  height: 29px;
  line-height: 29px;
  text-align: center;
  background: #cac8c5;
  margin: 9px auto;
  color: #0b0b0b;
  font-size: 14px;
}

.i-case .content {
  position: relative;
  margin-top: 48px;
}

.i-case .content .l_btn, .i-case .content .r_btn {
  position: absolute;
  display: block;
  width: 35px;
  height: 35px;
  top: 50%;
  margin-top: -18px;
  left: -52px;
}

.i-case .content .r_btn {
  left: auto;
  right: -52px;
}

.i-case .content ul li {
  float: left;
  background: #fff;
  padding: 4px 4px 0 4px;
  margin-right: 19px;
}

.i-case .content ul li img {
  width: 326px;
  height: 363px;
}

.i-case .content ul li h3 {
  font-weight: normal;
  text-align: center;
  line-height: 32px;
}

.i-case .content ul li h3 a {
  font-size: 15px;
  color: #000000;
}

/*20年行业经验*/
.i-yan {
  margin-top: 70px;
}

.i-yan h2 {
  text-align: center;
  color: #8b0000;
  font-size: 35px;
}

.i-yan h2 p {
  color: #000000;
  font-size: 22px;
}

.i-yan .content {
  height: 866px;
  background: url(../images/you.jpg) no-repeat top center;
  margin-top: 60px;
  position: relative;
}

.i-yan .content .i-you {
  color: #0c0c0c;
  font-size: 16px;
}

.you1-video{
    position: absolute;
    right: 0;
    top: 0;
    width: 441px;
    height: 298px;
    overflow: hidden;
}


.i-yan .content .i-you p {
  background: url(../images/1.png) no-repeat left center;
  padding-left: 23px;
  line-height: 50px;
}

.i-yan .content .you1 {
  position: absolute;
  left: 22px;
}

.i-yan .content .you2 {
  position: absolute;
  left: 605px;
  top: 468px;
}

.i-yan .content .you2 a {
  width: 167px;
  height: 45px;
  line-height: 45px;
  text-align: center;
  color: #fff;
  background: #8b0000;
  margin: 40px auto 0;
  display: block;
}

/*海赫声学材料*/
.i-he {
  height: 1810px;
  background: url(../images/mid.jpg) no-repeat top center;
}

.i-he h2 {
  text-align: center;
  padding-top: 417px;
  color: #272727;
  font-size: 25px;
}

.i-he h2 p {
  color: #ffffff;
  font-size: 34px;
  line-height: 55px;
  margin-top: 1px;
}

.i-he h2 span {
  display: block;
  line-height: 35px;
  margin-top: 18px;
  font-size: 20px;
}

.i-he .content {
  margin-top: 28px;
}

.i-he .content .i-he-box {
  width: 484px;
  box-sizing: border-box;
  padding-left: 92px;
}

.i-he .content .i-he-box h3 {
  color: #8b0000;
  font-size: 16px;
  font-weight: normal;
}

.i-he .content .i-he-box p {
  color: #252525;
  font-size: 15px;
}

.i-he .content .i-he1 {
  height: 70px;
  margin-top: 22px;
}

.i-he .content .i-he2 {
  padding-left: 130px;
  height: 70px;
  margin-top: 22px;
}

.i-he .content1 {
  margin-top: 207px;
  position: relative;
}

.i-he .content1 .img-bao {
  position: absolute;
}

.i-he .content1 .img-bao1 {
  left: 48px;
  top: -22px;
}

.i-he .content1 .img-bao2 {
  right: 48px;
  top: 184px;
}

.i-he .content1 .img-bao3 {
  left: 48px;
  top: 524px;
}

.i-he .content1 .i-bao {
  width: 445px;
}

.i-he .content1 .i-bao h3 {
  color: #a16747;
  font-size: 20px;
}

.i-he .content1 .i-bao p {
  color: #2b2b2b;
  margin-top: 20px;
  font-size: 16px;
}

.i-he .content1 .i-bao1, .i-he .content1 .i-bao4 {
  margin-left: 550px;
}

.i-he .content1 .i-bao2, .i-he .content1 .i-bao3 {
  margin-left: 50px;
  margin-top: 37px;
  width: 498px;
}

.i-he .content1 .i-bao2 {
  margin-top: 77px;
}

.i-he .content1 .i-bao4 {
  margin-top: 65px;
}

/*首页一站式声学工程*/
.i-sheng {
  margin-top: 70px;
}

.i-sheng h2 {
  text-align: center;
  color: #8b0000;
  font-size: 36px;
}

.i-sheng h2 p {
  width: 357px;
  height: 43px;
  line-height: 43px;
  background: #474747;
  text-align: center;
  color: #fefefe;
  font-size: 26px;
  margin: 6px auto 0;
}

.i-sheng ul {
  width: 105%;
  margin-top: 70px;
}

.i-sheng ul li {
  float: left;
  margin-right: 22px;
  width: 245px;
}

.i-sheng ul li img {
  width: 245px;
  height: 294px;
}

.i-sheng ul li h3 {
  color: #8b0000;
  font-size: 16px;
  font-weight: normal;
  line-height: 40px;
  padding-left: 10px;
}

.i-sheng ul li p {
  color: #2b2b2b;
  font-size: 16px;
  padding-left: 10px;
}

.i-heng {
  margin-top: 56px;
}

.i-heng a {
  width: 103px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  color: #fff;
  font-size: 16px;
  margin: 19px auto 0;
  font-size: 16px;
  background: #8b0000;
  display: block;
}

/*首页关于我们*/
.i-about {
  margin-top: 77px;
  background: url(../images/about.jpg) no-repeat top center;
  height: 515px;
}

.i-about .i-hornr {
  width: 274px;
  margin-left: 59px;
  padding-top: 73px;
}

.i-about .i-hornr h3 {
  text-align: center;
  line-height: 46px;
  color: #ffffff;
  font-size: 18px;
}

.i-about .i-hornr .slideBox {
  width: 274px;
  overflow: hidden;
  position: relative;
}

.i-about .i-hornr .slideBox .bd {
  position: relative;
  height: 100%;
  z-index: 0;
}

.i-about .i-hornr .slideBox .bd li {
  zoom: 1;
  vertical-align: middle;
}

.i-about .i-hornr .slideBox .bd img {
  width: 211px;
  height: 298px;
  display: block;
  padding: 7px;
  border: 1px solid #fff;
  margin: 0 auto;
}

.i-about .i-hornr .slideBox .prev,
.i-about .i-hornr .slideBox .next {
  position: absolute;
  left: 0%;
  top: 50%;
  margin-top: -25px;
  display: block;
  width: 7px;
  height: 26px;
  background: url(../images/left1.png) no-repeat;
  filter: alpha(opacity=50);
  opacity: 0.5;
}

.i-about .i-hornr .slideBox .next {
  left: auto;
  right: 0%;
  background: url(../images/right1.png) no-repeat;
}

.i-about .i-hornr .slideBox .prev:hover,
.i-about .i-hornr .slideBox .next:hover {
  filter: alpha(opacity=100);
  opacity: 1;
}

.i-about .about-right {
  width: 492px;
  margin-right: 75px;
  padding-top: 106px;
}

.i-about .about-right h3 {
  line-height: 50px;
  color: #fffefe;
  font-size: 19px;
}

.i-about .about-right .content {
  color: #ffffff;
  font-size: 14px;
  padding-top: 18px;
  line-height: 26px;
}

.i-about .about-right .content a {
  display: block;
  width: 108px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border: 1px solid #ffffff;
  color: #ffffff;
  font-size: 14px;
  margin: 50px auto 0;
}

/*首页实力展示*/
.i-shi {
  margin-top: 60px;
}

.i-shi h2 {
  text-align: center;
  color: #030303;
  font-size: 33px;
}

.i-shi h2 p {
  color: #8b0000;
  font-size: 17px;
  text-transform: uppercase;
}

.i-shi h2 a {
  display: block;
  width: 108px;
  height: 29px;
  line-height: 29px;
  text-align: center;
  color: #fff;
  background: #838383;
  margin: 8px auto 0;
  font-size: 14px;
}

.i-shi .content {
  background: #f0f0f0;
  padding: 28px 0 18px 0;
  position: relative;
  margin-top: 31px;
}

.i-shi .content .l_btn1,
.i-shi .content .r_btn1 {
  position: absolute;
  left: 0;
  top: 50%;
  width: 26px;
  height: 26px;
  margin-top: -13px;
  z-index: 9999;
}

.i-shi .content .r_btn1 {
  left: auto;
  right: 0;
}

.i-shi .content ul li {
  float: left;
  margin-right: 13px;
}

.i-shi .content ul li img {
  width: 233px;
  height: 171px;
}

.i-shi .content ul li h3 {
  line-height: 30px;
  text-align: center;
  font-weight: normal;
}

.i-shi .content ul li h3 a {
  font-size: 15px;
  color: #565656;
}

/*首页新闻*/
.i-news {
  height: 484px;
  margin-top: 80px;
  position: relative;
}

.i-news .i-new-left {
  width: 50%;
  float: left;
  background: #b3b3b3;
  height: 100%;
  position: absolute;
  left: 0;
}

.i-news .i-new-right {
  width: 50%;
  float: left;
  background: #dedede;
  height: 100%;
  position: absolute;
  right: 0;
}

.i-news .i-news1 {
  width: 444px;
  margin-left: 40px;
  position: relative;
  z-index: 9999;
}

.i-news .i-news1 h3 {
  line-height: 86px;
  background: url(../images/n.png) no-repeat bottom center;
  color: #8b0000;
  font-size: 24px;
  text-align: center;
}

.i-news .i-news1 .i-news_list {
  margin-top: 24px;
}

.i-news .i-news1 .i-news_list li {
  height: 91px;
  width: 100%;
  box-sizing: border-box;
  padding: 8px 12px 0 24px;
  background: #fff;
  margin-bottom: 28px;
}

.i-news .i-news1 .i-news_list li:hover {
  background: #3c3c3c;
}

.i-news .i-news1 .i-news_list li a {
  line-height: 30px;
  color: #333333;
  font-size: 14px;
}

.i-news .i-news1 .i-news_list li p {
  color: #666666;
  font-size: 12px;
}

.i-news .i-news1 .i-news_list li:hover a,
.i-news .i-news1 .i-news_list li:hover p {
  color: #fff;
}

.i-news .i-news1 .i-news_list1 {
  margin-top: 30px;
}

.i-news .i-news1 .i-news_list1 li {
  padding: 14px 0;
  border-bottom: 1px dashed #585858;
}

.i-news .i-news1 .i-news_list1 li a {
  color: #000000;
  font-size: 14px;
}

.i-news .i-news1 .i-news_list1 li p {
  color: #222222;
  font-size: 12px;
}

.i-news .i-news1 .i-news_list1 li:hover a {
  color: #8b0000;
}

/*首页底部*/
.foot {
  background: #222222;
  padding-top: 40px;
}

.foot .f-contact {
  width: 276px;
  margin-left: 20px;
  color: #e4e4e4;
  line-height: 28px;
}

.foot .f-contact h3 {
  font-size: 18px;
  color: #fffefe;
  padding-bottom: 20px;
}

.foot .f-nav_foot {
  width: 180px;
  margin-left: 60px;
}

.foot .f-nav_foot h3 {
  font-size: 14px;
  color: #fffefe;
  padding-bottom: 6px;
}

.foot .f-nav_foot a {
  color: #e4e4e4;
  padding: 8px 0;
  display: inline-block;
}

.foot .f-copyright {
  color: #ffffff;
  font-size: 12px;
  width: 340px;
  padding-top: 34px;
  line-height: 26px;
}

.foot .f-copyright a {
  color: #fff;
}

.foot .f-er {
  background: url(../images/er.png) no-repeat center;
  width: 100px;
  height: 100px;
  text-align: center;
  vertical-align: middle;
  display: table;
  margin-top: 16px;
}

.foot .f-er img {
  vertical-align: middle;
  padding-top: 7px;
}

.foot .f-f_link {
  margin-top: 26px;
  border-top: 1px solid #454545;
  line-height: 66px;
  color: #e4e4e4;
}

.foot .f-f_link a {
  color: #e4e4e4;
}