body {
    background: #a6deff;
}

.box-a {
    margin-top: -2.5rem;
    position: relative;
    z-index: 1;
}

.img-box {
    position: relative;
}

.box-a .posi,
.box-f .posi {
    position: absolute;
    width: 3.75rem;
    height: 4.69rem;
    bottom: 0.7rem;
    cursor: pointer;
}

.box-f .posi {
    width: 5.91rem;
    height: 5.67rem;
    border-radius: 50%;
}

.box-a .posi1 {
    left: 0.2rem;
}

.box-a .posi2 {
    left: 4.1rem;
}

.box-a .posi3 {
    left: 8rem;
}

.box-a .posi4 {
    left: 12rem;
}

.box-f .posi5 {
    bottom: 6.8rem;
    left: 1rem;
}

.box-f .posi6 {
    bottom: 5rem;
    left: 8rem;
}

.box-f .posi7 {
    bottom: 0.6rem;
    left: 3.6rem;
}

.t-box {
    margin-bottom: 0.5rem;
}

.t-box .t-tit {
    margin-bottom: 0.3rem;
    padding: 0 2.5rem;
}

.box-b .t-txt {
    min-height: 9.5rem;
    background: #0b72d2;
    padding: 0.5rem;
    position: relative;
    overflow: hidden;
}

.box-c {
    width: 100%;
    height: 10.944rem;
    background: url(../images/box-bg1.png) no-repeat center / 100% 100%;
    padding-top: 1rem;
    box-sizing: border-box;
}

.box-c .t-tit {
    padding: 0 4.5rem;
    margin-bottom: 0;
}

.box-c .t-txt {
    width: 13.888rem;
    height: 6.44rem;
    background: #389da0;
    border-radius: 0.64rem;
    margin: 0 auto;
    padding-top: 0.1rem;
}

.box-c video {
    display: block;
    width: 13.65rem;
    height: 6.25rem;
    margin: 0 auto;
    border-radius: 0.64rem;
    overflow: hidden;
}

.box-d {
    width: 15.63rem;
    height: 22.4rem;
    background: url(../images/box-bg2.png) no-repeat center / 100% 100%;
    margin: 0 auto 0.5rem;
}

.box-d .t-tit {
    height: 3.5rem;
    position: relative;
}

.box-d .t-tit a {
    position: absolute;
    width: 4.416rem;
    height: 1.17rem;
    text-align: center;
    line-height: 1.17rem;
    background: #fe843f;
    border-radius: 0.585rem;
    color: #fff;
    top: 1.5rem;
    right: 0.5rem;
}

.box-d .t-txt {
    padding: 0.3rem 3rem;
}

.box-f {
    margin-bottom: 4rem;
}


/* 导航 */

.nav-box {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 0.2rem;
    background-color: rgba(40, 61, 80, 0.9);
    overflow: hidden;
}

.nav-box .nav-ul a {
    display: block;
    float: left;
    width: 33%;
    line-height: 1.5rem;
    text-align: center;
    box-sizing: border-box;
    font-size: 0.55rem;
    color: #fff;
}

.nav-box .nav-ul a.on {
    background-color: #f0f196;
    color: #1a243d;
    border-radius: 0.7rem;
}

.nav-box .nav-ul a:last-child {
    margin-right: 0;
}

.scroll {
    position: fixed;
    bottom: 3.5rem;
    right: 0.43rem;
    z-index: 1000;
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    line-height: 1.5rem;
    text-align: center;
    border-radius: 100%;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
}

.nav-box,
.scroll {
    z-index: 10;
}

.mask,
.dialog {
    position: fixed;
    z-index: 100;
}

.mask {
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(0, 0, 0, .8);
}

.dialog {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    width: 13.48rem;
}

.dialog .close-box {
    text-align: right;
    cursor: pointer;
    margin-bottom: 0.5rem;
}

.dialog .close-box img {
    display: inline-block;
}

.dialog .dialog-txt {
    padding: 0.53rem;
    border-radius: 0.5rem;
    background: #fb6e1f;
}

.dialog-txt .t-txt-inner {
    max-height: 14.18rem;
    overflow-y: auto;
    color: #fff;
    line-height: 0.768rem;
    font-size: 0.59rem;
}

.dialog-txt .dialog-img-box img {
    width: 6.06rem;
}

.dialog-txt .t-txt-inner h3 {
    text-align: center;
    margin-bottom: 0.5rem;
}

.dialog-txt .t-txt-inner .dialog-img-box {
    margin: 0.3rem 0;
    display: flex;
    justify-content: space-between;
}

.dialog .dialog-txt2 {
    background: #fff;
    text-align: center;
}