*{
    margin: 0;
    padding:0;
    box-sizing: border-box;
}

:root{
    --primary: #3171fb;
}

a{
    color: inherit;
    text-decoration: none;
}

ul{
    list-style: none;
}

icon-font {
    display: inline-flex;
}

icon-font svg {
    width: 1em;
    height: 1em;
    vertical-align: -0.15em;
    fill: currentColor;
    overflow: hidden;
}

.inner{
    width:100%;
    max-width: 1500px;
    padding-left: 30px;
    padding-right: 30px;
    margin-left: auto;
    margin-right: auto;
}

header{
    position: sticky;
    top:0;
    left: 0;
    color: #333;
    box-shadow: 0 0 5px rgba(0,0,0,0.12);
    z-index: 4;
    background-color: #fff;
}

header .inner{
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.header-logo__link{
    display: flex;
    width: 120px;
    height: 65px;
}

.header-logo__image{
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.header-nav{
    display: flex;
    margin-left: 3vw;
}

.header-nav__item{
    position: relative;
}

.header-nav > .header-nav__item + .header-nav__item{
    margin-left: 2vw;
}

.header-nav__link{
    display: block;
    padding:5px 15px;
    line-height: 35px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-nav__link icon-font{
    margin-left: 3px;
    vertical-align: middle;
    transition: transform 0.3s ease;
}

.header-nav__item.active > .header-nav__link,
.header-nav__item:hover > .header-nav__link{
    background-color: #dee8fd;
}

.header-nav__item:hover > .header-nav__link icon-font{
    transform: rotate(180deg);
}

.header-nav__drop{
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top:45px;
    left: 0;
    box-shadow: 0 0 5px rgba(0,0,0,0.12);
    transition: all 0.3s ease;
    max-width: 240px;
    background-color: #fff;
}

.header-nav__item:hover > .header-nav__drop{
    visibility: visible;
    opacity: 1;
}


.header-locale{
    display: flex;
    align-items: center;
    position: relative;
    margin-left: auto;
}

.header-locale__name{
    display: flex;
    align-items: center;
    margin-right: 3px;
    line-height: 45px;
}

.header-locale__name icon-font{
    margin-right: 3px;
}

.header-locale__drop{
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top:45px;
    left: 0;
    box-shadow: 0 0 5px rgba(0,0,0,0.12);
    transition: all 0.3s ease;
    max-width: 240px;
    min-width: 100%;
    background-color: #fff;
}

.header-locale:hover .header-locale__drop{
    visibility: visible;
    opacity: 1;
}

.header-locale__link{
    display: block;
    padding: 5px 15px;
    line-height: 35px;
    text-align: center;
}

.header-locale__link:hover{
    background-color: #dee8fd;
}

.header-locale:hover > icon-font{
    transform: rotate(180deg);
}

.header-locale > icon-font{
    transition: transform 0.3s ease;
}

header .header-menu {
    margin-left: 15px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: none;
    justify-content: center;
    align-items: center;
}

header .header-menu span,
header .header-menu span::before,
header .header-menu span::after {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #444444;
    border-radius: 2px;
    transition: all 0.3s ease;
}

header .header-menu span {
    position: relative;
}

header .header-menu span::before {
    content: "";
    position: absolute;
    bottom: 7px;
    left: 0;
}

header .header-menu span::after {
    content: "";
    position: absolute;
    top: 7px;
    left: 0;
}

header .header-menu.active span {
    background-color: transparent;
}

header .header-menu.active span:before {
    transform: translateY(7px) rotate(45deg);
}

header .header-menu.active span::after {
    transform: translateY(-7px) rotate(-45deg);
}

aside {
    width: 100vw;
    height: calc(100vh - 70px);
    position: fixed;
    top: 65px;
    z-index: 3;
    background-color: #f8f8f8;
    padding: 20px;
    transform: translateX(100vw);
    transition: transform 0.3s ease;
    overflow-y: auto;
}

aside > ul > li {
    border-bottom: 1px solid #d2d2d2;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 5px 0;
}
aside > ul > li  > ul >li{
    padding-left: 12px;
}

aside > ul > li a {
    line-height: 40px;
    display: flex;
    flex: 1 0 0;
    font-size: 15px;
    margin-right: 10px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

aside > ul li icon-font {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
}

aside > ul li.active icon-font {
    transform: rotate(180deg);
}

aside > ul > li ul {
    width: 100%;
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease;
}

aside.active {
    transform: translateX(0);
}


main{
    min-height: calc(100vh - 360px);
}

.banner .swiper-slide{
    position: relative;
    padding-bottom: 40%;
}

.banner-adaptor{
    position: absolute;
    left: 0;
    top:0;
    right: 0;
    bottom:0;
}

.banner-adaptor img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}


footer{
    background-color: #272b37;
}


.footer-main{
    background-color: #1b1e2d;
    padding:30px 0;
}

.footer-main .inner{
    display: flex;
    justify-content: space-between;
}

.footer-nav{
    display: flex;
    flex:1 0 0;
}

.footer-nav__group{
    max-width: 16%;
}

.footer-nav__group + .footer-nav__group{
    margin-left: 5%;
}

.footer-nav__title{
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #fff;
}

.footer-nav__item{
    color: #b7b7b7;
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.footer-nav__item + .footer-nav__item{
    margin-top: 8px;
}

.footer-nav__image{
    width: 100%;
    max-width: 120px;
    display: block;
}

.footer-copyright{
    padding: 10px 0;
    border-top: 1px solid #5f636c;
    font-size: 12px;
    text-align: center;
    color: #ccc;
    line-height: 15px;
}


/* 首页 */
.home-introduction{
    padding:50px 0;
}

.home-introduction__wrapper{
    display: flex;
    background-color: #eee;
}

.home-introduction__image{
    position: relative;
    width: 50%;
}

.home-introduction__image img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.home-introduction__content{
    flex:1 0 0;
    padding: 3vw;
}

.home-introduction__title{
    font-size: 20px;
    line-height: 1.5;
}

.home-introduction__text{
    color: #444;
    margin-top: 30px;
    text-indent: 2em;
    line-height: 1.6;
}

.home-dev{
    padding:50px 0;
}

.home-dev__top{
    text-align: center;
    color: #444;
}

.home-dev__top-title{
    font-size: 30px;
    line-height: 1.5;
}

.home-dev__top-subtitle{
    margin-top: 10px;
    font-size: 13px;
    color: #999;
}

.home-dev__main{
    margin-top: 30px;
    background: url("../images/development.jpg") no-repeat center center / cover;
}

.home-dev__main .inner{
    padding-top: 5vw;
    padding-bottom: 5vw;
}

.home-dev__control{
    position: relative;
    padding-left: 100px;
    padding-right: 100px;
}

.home-dev__control::before{
    content: "";
    position: absolute;
    left: 60px;
    right: 60px;
    top:50%;
    background-color: rgba(0,0,0,0.12);
    height: 2px;
    transform: translateY(50%);
}

.home-dev__control .swiper-slide{
    display: flex;
    justify-content: center;
    color: #999;
}

.home-dev__control #dev-main__prev,
.home-dev__control #dev-main__next{
    position: absolute;
    width: 60px;
    height: 60px;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0,0,0,0.12);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    color: #fff;
}

.swiper-button-disabled{
    opacity: 0.6;
    cursor: not-allowed;
}


.home-dev__control #dev-main__prev{
    left: 0;
}

.home-dev__control #dev-main__next{
    right: 0;
}

.dev-main__adaptor{
    position: relative;
    width: 100%;
    padding-bottom: 100%;
}

.dev-main__adaptor .dev-main__year{
    position: absolute;
    top:0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 28px;
    font-weight: bold;
}

.home-dev__control .swiper-slide-thumb-active .dev-main__year{
    background-color: var(--primary);
    color: #fff;
}

.home-dev__content{
    margin-top: 30px;
}

.home-dev__text{
    font-size: 18px;
    color: #333;
    line-height: 1.6;
}

.home-dev__bottom{
    margin-top: 30px;
}

.home-dev__bottom ul{
    display: flex;
    flex-wrap: wrap;
    margin-left: -20px;
    margin-top: -20px;
}

.home-dev__bottom ul li{
    width: 25%;
    padding-left: 20px;
    padding-top: 20px;
}

.home-dev__bottom-wrapper{
    display: flex;
    align-items: center;
    background-color: #f7f9ff;
    border-radius: 5px;
    padding: 15px;
}

.home-dev__bottom-icon{
    width: 80px;
    height: 80px;
    border-radius: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border:1px solid currentColor;
    color: #666;
    font-size: 45px;
    margin-right: 10px;
    position: relative;
}
.home-dev__bottom-icon img{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 50px;
    height: 50px;
}
.home-dev__bottom-title{
    font-size: 1.7vw;
    color: #666;
}

.home-dev__bottom-subtitle{
    font-size: 14px;
    color: #999;
    margin-top: 10px;
}

.home-partner{
    padding: 70px 0;
}

.home-partner__top{
    text-align: center;
}

.home-partner__title{
    font-size: 30px;
    line-height: 1.5;
}

.home-partner__subtitle{
    margin-top: 10px;
    font-size: 13px;
    color: #999;
}

.home-partner__bottom{
    margin-top: 30px;
}

.home-partner__items{
    flex-wrap: wrap;
    margin-left: -20px;
    margin-top: -20px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-gap: 2vw;
}

.home-partner__item{
    /*width: 20%;*/
    /*padding-left: 20px;*/
    /*padding-top: 20px;*/
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #e1f1f0;
    transition: transform .3s ease;
}

.home-partner__item:hover {
    transform: translateY(-5px);
}
.home-partner__adaptor{
    position: relative;
    padding-bottom: 37.5%;
}

.home-partner__image{
    position: absolute;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

/* 服务 */
.service-main{
    padding: 70px 0;
}

.service-main__title{
    text-align: center;
    font-size: 30px;
    line-height: 1.5;
    color: #444;
}

/*.service-main__content{
    margin-top: 45px;
}

.service-main__item{
    display: flex;
    align-items: center;
    padding:30px 0;
}

.service-main__item:nth-child(even){
    flex-direction: row-reverse;
}

.service-main__item:nth-child(even) .service-main__image{
    margin-right: 3vw;
}

.service-main__text{
    line-height: 1.6;
    color: #444;
    flex: 1;
    max-width: 60%;
}
.service-main__text pre{
    font-family: "Microsoft YaHei UI";
    white-space: pre-wrap;
    word-wrap: break-word;
}


.service-main__image{
    flex:1;
    max-width: 40%;
}

.service-main__image img{
    display: block;
    max-width: 100%;
    width: 100%;
}*/

.service-main__items{
    margin-top: 45px;
    color: #444;
}

.service-main__item{
    display: flex;
    justify-content: space-between;
    padding:35px 0;
}
.service-main__wrapper{
    flex: 1;
    display: flex;
    align-items: flex-start;
}

.service-main__item:nth-child(even) .example-main__wrapper{
    margin-right: 5vw;
}

.service-main__item:nth-child(odd){
    flex-direction: row-reverse;
}

.service-main__item:nth-child(odd) .example-main__wrapper{
    margin-left: 5vw;
}

.service-main__icon{
    margin-right: 15px;
}

.service-main__icon img{
    width: 100px;
    height: 100px;
    display: block;
}

.service-main__content{
    display: flex;
    flex-direction: column;
}

.service-main__item-title{
    font-size: 19px;
    line-height: 1.6;
}

.service-main__item-text{
    margin-top: 15px;
    line-height: 1.6;
}

.service-main__item-link{
    display: inline-flex;
    padding-left: 15px;
    padding-right: 15px;
    line-height: 40px;
    color: #fff;
    background-color: var(--primary);
    border-radius: 23px;
    margin-top: 30px;
    margin-left: auto;
    margin-right: 0;
}

.service-main__image{
    flex: 1;
    max-width: 510px;
}

.service-main__image img{
    display: block;
    max-width: 100%;
    margin: auto;
}

/* 联系我们 */

.contact-info{
    padding:70px 0;
}

.contact-info__title{
    text-align: center;
    font-size: 30px;
    line-height: 1.5;
    color: #444;
}

.contact-info__subtitle{
    margin-top: 25px;
    color: #666;
}

.contact-info__map{
    margin-top: 45px;
    position: relative;
    padding-bottom: 30%;
    min-height: 300px;
}

.contact-info__adaptor{
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
}

.contact-info__map #map{
    width: 100%;
    height: 100%;
}

.contact-info__map #map > img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-info__message{
    margin-top: 30px;
    line-height: 1.6;
    color: #444;
}

.contact-info__message pre{
    line-height: 1.6;
    font-family: inherit;
    word-break: break-word;
    white-space: pre-wrap;
}

.contact-form {
    padding: 70px 0;
    background-color: #f8f8f8;
}

.contact-form__title {
    font-size: 28px;
    line-height: 1.6;
    text-align: center;
}

.contact-form__content {
    margin-top: 45px;
}
.contact-form__content  form{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.contact-form__row + .contact-form__row {
    margin-top: 20px;
}

.contact-form__label {
    font-size: 18px;
    display: inline-flex;
    align-items: center;
}

.contact-form__label + .contact-form__label {
    margin-left: 35px;
}

.contact-form__label input[type=radio] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
}

.contact-form__field {
    width: 450px;
    height: 46px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 18px;
    outline-color: var(--primary);
    padding: 0 15px;
    -webkit-appearance: none;
    appearance: none;
}

.contact-form__field + .contact-form__field {
    margin-left: 35px;
}
.contact-form__row .captcha-img{
    margin-left: -107px;
    position: absolute;
    margin-top: 2px;
    height: 42px;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}
.contact-form__button {
    background-color: var(--primary);
    color: #fff;
    line-height: 50px;
    border-radius: 25px;
    padding: 0 30px;
    outline: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    width: 460px;
}

/*  */

.example-main{
    padding: 70px 0;
}

.example-main__title{
    font-size: 28px;
    line-height: 1.6;
    text-align: center;
}

.example-main__items{
    margin-top: 45px;
    color: #444;
}

.example-main__item{
    display: flex;
    justify-content: space-between;
    padding:35px 0;
}

.example-main__wrapper{
    flex: 1;
    display: flex;
    align-items: flex-start;
}

.example-main__item:nth-child(even) .example-main__wrapper{
    margin-right: 5vw;
}

.example-main__item:nth-child(odd){
    flex-direction: row-reverse;
}

.example-main__item:nth-child(odd) .example-main__wrapper{
    margin-left: 5vw;
}

.example-main__icon{
    margin-right: 15px;
}

.example-main__icon img{
    width: 100px;
    height: 100px;
    display: block;
}

.example-main__content{
    display: flex;
    flex-direction: column;
}

.example-main__item-title{
    font-size: 19px;
    line-height: 1.6;
}

.example-main__item-text{
    margin-top: 15px;
    line-height: 1.6;
}

.example-main__item-link{
    display: inline-flex;
    padding-left: 15px;
    padding-right: 15px;
    line-height: 40px;
    color: #fff;
    background-color: var(--primary);
    border-radius: 23px;
    margin-top: 30px;
    margin-left: auto;
    margin-right: 0;
}

.example-main__image{
    flex: 1;
    max-width: 510px;
}

.example-main__image img{
    display: block;
    max-width: 100%;
    margin: auto;
}


/* dialog */

.dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    width: 95%;
    max-width: 300px;
    border-radius: 4px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    animation: showDialog 0.5s ease;
}

.dialog .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    background: var(--primary);
    padding: 12px 15px;
}

.dialog .title p {
    max-width: calc(100% - 60px);
    color: #fff;
    /* .text-ellipsis(); */
}

.dialog .title svg {
    color: #fff;
    cursor: pointer;
}

.dialog .content {
    padding: 20px 15px;
    color: #666;
    background: #fff;

}
.dialog .icon{
    width: 1em;
    height: 1em;
    fill: currentColor;
    overflow: hidden;
    vertical-align: -0.15em;
}

.dialog + .mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    background: rgba(0, 0, 0, 0.6);
    animation: showMask 0.5s ease;
}

@keyframes showDialog {
    from {
        transform: translate(-50%, -50%) scale(0)
    }
    to {
        transform: translate(-50%, -50%) scale(1)
    }
}

@keyframes showMask {
    from {
        opacity: 0
    }
    to {
        opacity: 1
    }
}

/* loading */

.loading {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.loading img {
    width: 40px;
    animation-name: example;
    animation-iteration-count: infinite;
    animation-duration: 3s;
}

@keyframes example {
    from {transform: rotate(0deg);}
    to {transform: rotate(360deg);}
}

@keyframes zoomIn {
    from{
        opacity: 0;
        transform:scale(0.6);
    }
    to{
        opacity: 1;
        transform:scale(1);
    }
}

@keyframes fadeIn {
    from{
        opacity: 0;
    }
    to{
        opacity: 1;
    }
}


.anchor{
    display: block;
    height: 50px; /*和顶部fix的高度一致*/
    margin-top: -50px; /*和顶部fix的高度一致*/
    visibility: hidden;
}