html {
    max-width: 1920px;
    margin: 0 auto;
}

body {
    background-color: #F8FBFD;
}


/* 顶部 */

.top {
    width: 100%;
    background: url(./tou.png) no-repeat no-repeat;
    background-size: 100% 100%;
}

.top .w {
    width: 62.5vw;
    padding-top: 3.0729vw;
    padding-bottom: 4.6875vw;
}

.top .logo_01 {
    width: 33.9583vw;
    height: 5.2604vw;
    float: left;
}

.top .form {
    float: right;
    margin-top: 1.6146vw;
}

.top .sou1 {
    width: 18.2292vw;
    height: 2.6042vw;
    padding-top: 0.8854vw;
    padding-bottom: 0.8854vw;
    font-size: 0.8333vw;
    padding-left: 1.0417vw;
    color: #999;
    vertical-align: middle;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 1.3021vw 0 0 1.3021vw;
    border: 1px solid #ccc;
}

.top .sou1::-webkit-input-placeholder {
    color: #999;
}

.top .sou2 {
    width: 5.2083vw;
    height: 2.6042vw;
    border-style: none;
    font-size: 0.9375vw;
    outline: none;
    color: #fff;
    background-color: #1764ce;
    border-radius: 0 1.3021vw 1.3021vw 0;
    background-repeat: no-repeat;
    background-position: center center;
    vertical-align: middle;
}