body {
    background-color: #F7F7F7;
    font-family: PingFangSC, PingFang SC;
    color: #000;
    font-size: 14px;
}
#app {
    width: 100%;
    position: relative;
}
.top_bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 80rem;
    background: linear-gradient( 180deg, #9ACAFD 0%, #F7F7F7 100%);
    z-index: -1;
}
.main_panel {
    width: 144rem;
    margin: 0 auto;
}
.top {
    width: 100%;
    height: 10rem;
    display: flex;
    align-items: center;
}
.logo {
    height: 6rem;
    width: auto;
}
.banner {
    position: relative;
}
.banner_item {
    width: 100%;
    height: auto;
    vertical-align: bottom;
}
.banner_qr_code {
    position: absolute;
    left: 12rem;
    bottom: 14.5rem;
    width: 20rem;
    height: 20rem;
}
.about {
    padding-top: 4.5rem;
    text-align: center;
}
.about_title {
    font-size: 2.6rem;
    font-weight: 500;
}
.about_desc {
    padding: 0 33rem;
    margin-top: 1rem;
    margin-bottom: 2.5rem;
}
.about_content {
    position: relative;
}
.about_real_content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-between;
}
.about_item {
    flex: 1;
    position: relative;
    color: #303133;
    font-size: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.about_item_title {
    font-weight: 700; 
}
.about_item_title .big {
    font-size: 4rem;
    position: relative;
}
.about_item_title .has_add::after {
    content: '+';
    font-size: 2rem;
    position: absolute;
    right: -1rem;
    top: 0;
}
.about_item_desc {
    font-size: 2.6rem;
    color: #606266;
}
.about_item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 2.8rem;
    bottom: 2.8rem;
    width: 1px;
    background-color: #AEAEB2;
}
.about_item:last-child::after {
    display: none;
}

.service_title {
    height: 14.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.6rem;
    font-weight: 500;
}
.service_list {
    display: flex;
    flex-wrap: wrap;
}
.service_item {
    width: 34.05rem;
    height: 20rem;
    margin-top: 2.6rem;
    margin-right: 2.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    border-radius: 0.8rem;
    transition: all .15s;
    /* cursor: pointer; */
}
.service_item:hover {
    /* opacity: 0.7; */
}
.service_item_img {
    width: 8rem;
    height: 8rem;
}
.service_item_title {
    margin-top: 1rem;
    font-weight: 500;
    font-size: 2.2rem;
    color: #303133;
}
.service_item:nth-child(1), .service_item:nth-child(2), .service_item:nth-child(3),.service_item:nth-child(4)  {
    margin-top: 0; 
}
.service_item:nth-child(4n) {
    margin-right: 0;
}

.advantage_list {
    display: flex;
    flex-wrap: wrap;
}
.advantage_item {
   width: 70.7rem; 
   height: 20rem;
   margin-top: 2.6rem;
   margin-right: 2.6rem;
   background-color: #fff;
   border-radius: 0.8rem;
   padding: 5.5rem 0 5.5rem 4.4rem;
   display: flex;
   transition: all.15s;
   /* cursor: pointer; */
}
.advantage_item:hover {
    /* opacity: 0.7; */
}
.advantage_item:nth-child(2n) {
    margin-right: 0; 
}
.advantage_item:nth-child(1),.advantage_item:nth-child(2) {
    margin-top: 0; 
}
.advantage_item_img {
    width: 9rem;
    height: 9rem;
    margin-right: 2.8rem;
}
.advantage_info {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-top: 0.5rem;
}
.advantage_title {
    font-size: 2.2rem;
    font-weight: 500;
    color: #303133;
}
.advantage_desc {
    font-size: 1.8rem;
    color: #606266;
    margin-top: 0.5rem; 
}

.footer {
    margin-top: 6rem;
    background-color: #fff;
    width: 100%;
    height: 30rem;
}
.footer_content {
    padding-top: 4rem;
    color: #303133;
    font-size: 1.8rem;
    display: flex;
    justify-content: space-between;
    font-weight: 500;
}
.footer_item {
    margin-bottom: 2rem;
}
.footer_tip {
    margin-top: 7rem;
    color: #919399;
}
.qr_code_box {
    display: flex;
}
.qr_code_item {
    margin-left: 3rem;
    text-align: center;
}
.qr_code_item img {
    width: 18rem;
    height: 18rem;
    vertical-align: bottom;
}
.qr_code_desc {
    color: #303133;
    font-size: 1.8rem;
    font-weight: 500;
}


/* 媒体查询 适配不同尺寸 */
/* @media (max-width: 1480px) {
    html {
        font-size: 8.3px;
    }
} */

@media (max-width: 1240px) {
    html {
        font-size: 6.8px;
    }
    .about_desc {
        padding: 0 24rem;
    }
}
@media (max-width: 1030px) {
    html {
        font-size: 5.3px;
    }
    .about_desc {
        padding: 0 10rem;
    }
}
@media (max-width: 768px) {
    html {
        font-size: 4px;
    }
}
@media (max-width: 580px) {
    html {
        font-size: 2.7px;
    }
    .main_panel {
        width: 100%;
        padding: 0 16px;
    }
    .top {
        height: 58px;
    }
    .logo {
        height: 38px;
        width: auto;
    }
    .about {
        padding-top: 10px;
    }
    .about_title {
        font-size: 14px;
    }
    .about_desc {
        margin-top: 5px;
        margin-bottom: 10px;
        padding: 0 20px;
        font-size: 12px;
        color: #606266;
        word-break: break-all;
        text-align: left;
    }
    .about_item {
        font-size: 14px;
    }
    .about_item_title .big {
        font-size: 18px;
    }
    .about_item_desc {
        font-size: 12px;
    }
    .about_item::after {
        top: 12px;
        bottom: 12px
    }
    .about_item_title .has_add::after {
        font-size: 12px;
        right: -4px;
        top: -6px;
    }
    .service_title {
        height: 40px;
        font-size: 14px;
    }
    .service_item {
        width: calc(50% - 5px);
        height: 100px;
        margin-right: 10px!important;
        margin-top: 10px!important;
    }
    .service_item:hover {
        opacity: 1;
    }
    .service_item_img {
        width: 50px;
        height: 50px;
    }
    .service_item_title {
        margin-top: 5px;
        font-size: 12px;
    }
    .service_item:nth-child(1), .service_item:nth-child(2) {
        margin-top: 0!important; 
    }
    .service_item:nth-child(2n) {
        margin-right: 0!important;
    }
    .advantage_item {
        width: 100%;
        height: 80px;
        margin-right: 0!important;
        margin-top: 10px!important;
        padding: 10px 0 10px 14px;
    }
    .advantage_item:hover {
        opacity: 1;
    }
    .advantage_item:first-of-type {
        margin-top: 0!important; 
    }
    .advantage_item_img {
        width: 60px;
        height: 60px;
        margin-right: 10px;
    }
    .advantage_info {
        padding-top: 5px;
    }
    .advantage_title {
        font-size: 14px;
    }
    .advantage_desc {
        font-size: 12px;
        margin-top: 10px;
    }
    .footer {
        margin-top: 10px;
        height: auto;
    }
    .footer_content {
        padding-top: 10px;
        padding-bottom: 10px;
        font-size: 12px;
    }
    .footer_item {
        margin-bottom: 5px;
    }
    .footer_tip {
        margin-top: 20px;
    }
    .footer_info {
        flex: 1;
        overflow: hidden;
    }
    .qr_code_item {
        margin-left: 10px;
    }
    .qr_code_item img {
        width: 100px;
        height: 100px;
    }
    .qr_code_desc {
        font-size: 12px;
    }
}