.item-nav {
    color: #000;
    background: #FFF;
  
    background-size: 100% calc(100% - 100px);
    font-size: 14px;
    background-repeat: no-repeat;
    background-size: auto;
    background-position: top center;
}

.item-nav *,
.item-nav *::after,
.item-nav *::before {
    box-sizing: unset !important;
}


.item-nav body,
.item-nav div,
.item-nav dl,
.item-nav dt,
.item-nav dd,
.item-nav ul,
.item-nav ol,
.item-nav li,
.item-nav h1,
.item-nav h2,
.item-nav h3,
.item-nav h4,
.item-nav h5,
.item-nav h6,
.item-nav pre,
.item-nav code,
.item-nav form,
.item-nav fieldset,
.item-nav legend,
.item-nav input,
.item-nav textarea,
.item-nav p,
.item-nav blockquote,
.item-nav th,
.item-nav td {
    margin: 0;
    padding: 0;
}

.item-nav table {
    border-collapse: collapse;
    border-spacing: 0;
}

.item-nav fieldset,
.item-nav img {
    border: 0;
}

.item-nav em,
.item-nav strong {
    font-style: normal;
    font-weight: normal;
}

.item-nav li {
    list-style: none;
}

.item-nav h1,
.item-nav h2,
.item-nav h3,
.item-nav h4,
.item-nav h5,
.item-nav h6 {
    font-size: 100%;
    font-weight: normal;
}

.item-nav input,
.item-nav button,
.item-nav textarea {
    font-size: 12px;
}

.item-nav a {
    text-decoration: none;
    outline: none;
}

.item-nav a:hover {
    cursor: pointer;
}

.item-nav input {
    outline: none;
    border: none;
}

.item-nav th,
.item-nav td {
    vertical-align: top;
}

/*轮播箭头*/
.item-nav .banner-btn {
    position: relative;
    width: 1120px;
    height: 1px;
    margin: -120px auto 0;
   z-index:40;
}

.item-nav .banner-btn a {
    display: block;
    width: 33px;
    height: 51px;
}

.item-nav .banner-btn .btn-l {
    background: url(../image/swiper/arrow04.png) no-repeat center center;
    float: left;
}

.item-nav .banner-btn .btn-r {
    background: url(../image/swiper/arrow05.png) no-repeat center center;
    float: right;
}

/*保卫部方案*/
.item-nav {
    width: 100%;
    height: 650px;
    padding-top: 30px;
    position: relative;
    margin-bottom:100px;

}
.item-nav2 {
    width: 100%;
    height: 500px;
    padding-top: 30px;
    position: relative;
}
.item-nav .function-nav-wrap {
    width: 1000px;
    height: 290px;
    position: absolute;
    left: 50%;
    top: 420px;
    z-index: 20;
    margin-left: -500px;
    overflow: hidden;
}

.item-nav .function-nav {
    width: 9999px;
    position: relative;
}

.item-nav .item-wrap {
    width: 226px;
    height: 264px;
    background-color: #e5e6e6;
    border-radius: 5px;
    position: relative;
    margin: 0 12px;
    float: left;
}

.item-nav .item {
    width: 196px;
    height: 215px;
    background-color: #f8f8f8;
    border-radius: 5px;
    padding: 45px 15px 0;
    text-align: center;
}

.item-nav .thumb img {
    display: block;
    margin: 0 auto 8px;
}

.item-nav .thumb p {
    color: #7f8c8c;
}

.item-nav .thumb .cn {
    height: 20px;
    line-height: 20px;
    font-size:19px;
}

.item-nav .thumb .eng {
    font-size: 7px;
    line-height: 7px;
}

.item-nav .a-txt {
    margin-top: 25px;
    color: #777777;
    line-height: 18px;
}

.item-nav .btn {
    border-radius: 5px;
    text-align: center;
}

.item-nav .btn-submit {
    width: 168px;
    height: 46px;
    background-color: #152584;
    position: absolute;
    left: 28px;
    bottom: -20px;
}

.item-nav .btn-submit a {
    width: 168px;
    height: 43px;
    display: block;
    font-size: 16px;
    line-height: 43px;
    color: #fff;
    background-color:#152584;
    border-radius: 5px;
}

.act .item {
    background-color: #fff;
}

.act .btn-submit {
      background-color: #d41414;
}

.act .btn-submit a {
     background-color: #d41414;
}