*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    "Noto Sans",
    sans-serif,
    "Apple Color Emoji",
    "Segoe UI Emoji",
    "Segoe UI Symbol",
    "Noto Color Emoji";
    font-size: 14px;
}
img{
    width: 100%;
}


/* footer:联系我们(底部) */
footer{
    background-color: #080b28;
    display: grid;
    justify-items: center;
    padding-top: 72px;
    padding-bottom: 24px;
}
.footer-menus{
    width: 100%;
    max-width: 1180px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 0 80px;
    position: relative;
}
.footer-menus .menu-title {
    font-size: 18px;
    color: white;
    font-weight: 500;
    padding-bottom: 20px;
    margin-bottom: 20px;
    position: relative;
}
.footer-menus .menu-title::after {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #ffffff;
    content: '';
}
.footer-menus .contact-us {
    justify-self: start; /* 水平上在最开始的部分 */
    color: white;
}
.footer-menus .contact-address {
    font-size: 20px;
    margin-bottom: 16px;
}
.footer-menus .contact-us i {
    font-size: 18px;
    line-height: 24px;
    padding-right: 10px;
}

.footer-menus .contact-us i {
    font-size: 18px;
    padding-right: 10px;
}
.footer-menus .contact-us .contact-us-item {
    display: flex;
    line-height: 24px;
    align-items: flex-start;
}
.footer-menus .contact-us p:not(:first-child) {
    padding-bottom: 24px;
}
.footer-menus .menu-items li {
    list-style: none;
    padding-bottom: 10px;
}
.footer-menus .menu-items .social i {
    font-size: 24px;
}
.footer-menus .menu-items .social a {
    margin-right: 10px;
}
.footer-menus .menu-items .email .fa-envelope {
    margin-right: 10px;
    font-size: 24px;
}
.footer-menus .menu-items li a {
    text-decoration: none;
    font-weight: 300;
    color: white;
    cursor: pointer;
}
.footer-menus .menu-items li a:hover {
    color: #036FD4;
}
.icp-info{
    font-size: 18px;
    margin-top: 24px;
    margin-bottom: 16px;
}
.icp-info,
.rights {
    grid-column: 1 / -1;/* 从编号为1到最后一个，-2就是倒数第二个 */
    justify-self: center;
    color: white;
}
.scrollToTop{
    display: none;
    position: fixed;
    right: 40px;
    bottom: 100px;
    z-index: 300;
}
.scrollToTop a{
    width: 32px;
    height: 32px;
    color: white;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    text-decoration: none;
    position: fixed;
    bottom: 60px;
    right: 30px;
}
/* 实现响应式 */
@media(min-width:1101px){
    header nav {
        display: flex;
    }
}
@media(max-width:1100px){
    header nav {
        display: none !important;
    }

    header .burger{
        display: block;
        width: 20px;
        height: 6px;
        position: relative;
        justify-self: end;
        cursor: pointer;
    }
    .burger-line1,
    .burger-line2,
    .burger-line3{
        width: 20px;
        height: 2px;
        background-color: var(--text-color-lightest);
    }
    .burger-line1{
        position: absolute;
        top: -6px;
    }
    .burger-line3{
        position: absolute;
        top: 6px;
    }

    header.open nav{
        display: grid  !important;;
        position: absolute;
        left: 0;
        top: 0;
        width: 100vw;
        height: 100vh;
        background-color: white;
        grid-auto-rows: max-content;
        justify-items: end;

        padding: 0 40px;
        opacity: 0;
        animation: slideDown 0.6s ease-out forwards;
    }
    header.open nav > *{
        color: var(--text-color-darker);
        animation: showMenu 0.5s linear forwards 0.4s;
        font-size: 18px;
        margin: 4px 0;
        opacity: 0;
    }
    header.open nav > i.fas{
        margin-top: 10px;
    }

    header.open .burger-line1,
    header.open .burger-line2,
    header.open .burger-line3,
    header.sticky .burger-line1,
    header.sticky .burger-line2,
    header.sticky .burger-line3{
        background-color: var(--text-color-darker);
        transition: 0.4s ease;
    }

    header.open .burger-line1{
        transform: rotate(45deg) translate(3px,5px);/* rotate(45deg)是旋转45度*/
    }
    header.open .burger-line2{
        transform:translateX(5px);
        opacity: 0;/*透明的，不可见*/
    }
    header.open .burger-line3{
        transform: rotate(-45deg) translate(3px,-5px);
    }

    header.open .logo{
        z-index: 40;
        color: var(--text-color-darker);
    }

    @keyframes slideDown{
        from{
            height: 0;
            opacity: 0;
        }
        to{
            height: 100vh;
            padding-top: 80px;
            opacity: 1;
        }
    }
    @keyframes showMenu{
        from{
            opacity: 0;
            transform: translateY(-1vh);
        }
        to{
            opacity: 1;
            transform: translateY(0);
        }
    }
    .service-item .service-title{
        font-size: 20px;
    }
    .service-item .service-content{
        font-size: 14px;
        line-height: 24px;
    }
    .team-members{
        grid-template-columns: repeat(2,1fr);
        row-gap: 36px;
        column-gap: 6vw;/* vw是浮动的 */
    }
    .activities{
        grid-template-columns: repeat(2,1fr);
        row-gap: 36px;
    }
    .managemant-content {
        padding: 0 40px !important;
    }
    .main2_info {
        grid-template-columns: repeat(1, 1fr);
        column-gap: 0px;
    }
    .development-content-main {
        padding: 0 32px 32px;
        border: 0;
        margin: 0;
    }
    .development-content-main2 {
        padding: 0 32px 32px;
        border: 0;
        margin: 32px 0 0;
    }
    .development-content-image2 {
        margin-bottom: 32px;
    }
    .development-content-main:hover {
        border: 0
    }
    .development-content-image2, .development-content-image {
        width: 100%;
        position: sticky;
        left: 0px;
        top: 0px;
        padding: 0 24px;
    }
    .investment-business {
        padding: 72px 40px;
    }
}

@media(max-width:992px){
    .slide-caption h1{
        font-size: 48px;
    }
    .slide-caption h3{
        font-size: 18px;
    }

    .features,
    .services,
    .cultures,
    .structures {
        grid-template-columns: repeat(2, 1fr) !important;
        grid-template-rows: unset;
    }

    .partners {
        padding: 0 40px;
        grid-template-columns: repeat(3, 1fr) !important;
        grid-template-rows: unset;
    }

    .chain_box {
        grid-template-columns: 1fr !important;
        justify-content: center;
    }

    .chain_second_content {
        display: block;
    }

    .chain_second .item1,
    .item2,
    .item3,
    .item4 {
        position: sticky !important;
        right: 0 !important;
        top: 0 !important;
        margin-top: 20px;
    }
    .history_box {
        padding-left: 40px;
        flex-wrap: wrap;
    }
    .culture {
        margin-bottom: 20px;
    }
    .managemant-content {
        grid-template-columns: 1fr !important;
    }
    .managemant-content-right {
        display: none;
    }
    .managemant-content-left {
        margin-bottom: 32px;
    }
    .investment-content-main {
        grid-template-columns: repeat(1, 1fr);
    }
    .investment-content-main-item {
        margin-bottom: 32px;
    }
    .sales-content-example {
        grid-template-columns: repeat(1, 1fr) !important;
        padding: 0 40px;
    }
    .sales-content-example-item img {
        width: 120px;
    }
    .sales-content-example-item-info h4{
        font-size: 16px;
    }
    .sales-content-example-item-info p {
        font-size: 13px;
    }
    .menu-items,
    .menu-title {
        text-align: left;
    }
}
@media(max-width:768px){
    section,.footer-menus{
        padding: 0 40px;
    }
    .footer-menus{
        grid-template-columns: 2fr repeat(2,1fr);
    }
    .contact-us{
        grid-row: 1/3;
    }
    .footer-menu{
        text-align: right;
    }
    .activities{
        grid-template-columns: 1fr;
        row-gap: 36px;
    }
    .members-main,
    .members-other {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .data-section{
        grid-template-columns: 1fr;
        background-size: 300%;
    }
    .team-members{
        grid-template-columns: minmax(200px,400px);
    }
    .features,
    .services,
    .cultures,
    .structures,
    .structures-second,
    .consulting-content-main,
    .members-main,
    .members-other,
    .managemant-content-item,
    .contact-content
    {
        grid-template-columns: 1fr !important;
    }
    .managemant-content-item-left p {
        margin-bottom: 16px;
    }
    .footer-menus {
        grid-template-columns: 1fr;
        row-gap: 20px;
    }
    .partners {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .service-site .site {
        display: block !important;
    }
    .site .site-map {
        height: 250px;
    }
    .history_box {
        padding-left: 80px;
        border: 0;
    }
    .core-members {
        padding: 70px 40px;
    }
    .culture {
        margin-bottom: 20px;
    }
    .member {
        margin-bottom: 20px;
    }
    .members-main .member_avater {
        width: 100px;
        height: 100px;
    }
    .member_weng {
        margin-bottom: 42px;
    }
    .sales-mini-content {
        display: grid;
    }
    .sales-content {
        display: none;
    }
    .consulting-content-main-item {
        margin-bottom: 32px;
    }
}

@media(max-width:576px){
    .slide-caption h1{
        font-size: 36px;
    }
    .slide-caption h3{
        font-size: 20px;
    }
    .explore-btn{
        font-size: 18px;
        padding: 10px 24px;
    }
    .footer-menus{
        grid-template-columns: 1fr;
        row-gap: 20px;
    }
    .footer-menu{
        justify-self: start;
        text-align: left;
    }
    .icp-info {
        font-size: 16px;
    }
    .title1 {
        font-size: 28px;
    }
    .title1_en {
        font-size: 18px;
    }
}