* {
    margin: 0;
    padding: 0;
    /* font-size: 14px; */
    box-sizing: border-box;
    font-family: Helvetica,"PingFang SC","Microsoft Yahei",sans-serif;
}

img {
    width: 100%;
}

:root{
    --primary-color:#ff434f;
    --secondary-color:#e3e3e3;
    --text-color-lightest:#e7e9ec;
    --text-color-darker:#2e2e2e;
    --text-color-dark:#494949;
    --text-color-gray:#8b8b8b;
    --text-color-dark-gray:#727272;
    --text-color-light-gray:#c6c6c6;
    --backdrop-color:rgba(42,42,42,0.69);
}
/* 头部导航菜单样式 */
header{
    width: 100vw;
    height: 80px;
    display: grid;
    padding: 0 40px;

    grid-template-columns: 1fr  2fr;
    align-items: center;
    position: relative;
    z-index: 200;
}
/* logo样式 */
.logo {
    font-size: 40px;
    font-weight: 600;
    color: var(--text-color-lightest);
}
/* 头部导航样式 */
header nav{
    justify-self: end;
}

header nav i{
    color: var(--text-color-lightest);
}

header nav a{
    color: var(--text-color-lightest);
    text-decoration: none;
    margin: 0 24px;
}

header.burger{
    display: none;
}
/* 固定导航 */
header.sticky{
    position: fixed;
    background-color: white;
    box-shadow: 0 0 18px rgba(0,0,0,0.2);
    animation: dropDown 0.5s ease-in-out forwards;
}

header.sticky .logo,
header.sticky nav a,
header.sticky nav i{
    color:var(--text-color-darker);
}

@keyframes dropDown {
    from{
        transform: translateY(-100px);
    }
    to{
        transform: translateY(0);
    }
}
/* 整体轮播图组件样式 */
.glide{
    position: relative;
    top:-80px;
    z-index: 50;
}
/* 轮播图片视屏样式 */
.glide__slide img,
.glide__slide video{
    width: 100vw;
    height: 100vh;
    object-fit: cover;
}
/* 轮播标题样式 */
.slide-caption{
    position:absolute;
    z-index: 70;
    color: var(--text-color-lightest);
    text-align: center;
    max-width: 60vw;
}
/* 调整整个轮播图标题和图片结构 */
.glide__slide{
    display: flex;
    align-items: center;
    justify-content: center;
}
/* 设置主标题样式 */
.slide-caption h1{
    font-size: 80px;
    font-weight: 600;
}
/* 设置副标题样式 */
.slide-caption h3{
    font-size:38px;
    margin:48px 0;
}

.slide-caption.left{
    max-width: 80vw;
    text-align: left;
}

.slide-caption > *{
    opacity: 0;
}
/* 设置背景 */
.backdrop{
    background:var(--backdrop-color);
    z-index: 60;
    position:absolute;
    width: 100%;
    height: 100%;
    left:0;
    top:0;
    opacity: 0.5;
}
/* 探索按钮样式 */
.explore-btn{
    padding: 14px 32px;
    background-color: var(--primary-color);
    border: 0;
    border-radius: 4px;
    color:var(--text-color-lightest);
    font-size:18px;
    cursor: pointer;
    outline: none;
}
/* 内容区域*/
/*通用样式 */
.content-wrapper{
    display:flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

section{
    display: grid;
    justify-items: center;
    max-width: 1180px;
    padding: 0 80px;
}

.section-bg{
    position: relative;
}

.section-bg::before{
    content:"";
    display: block;
    position: absolute;
    background-color: #f9fbfb;
    width: 100vw;
    height: 100%;
    z-index: -1;
}
/* 标题样式 */
.title1{
    font-size: 34px;
    color:var(--text-color-darker)
}

.title1::after{
    content:"";
    display: block;
    width: 80%;
    height: 4px;
    background-color: var(--primary-color);
    margin-top: 14px;
    transform:translateX(10%) ;
}
/* 副标题样式 */
.intro{
    margin:28px 0 60px 0;
    font-size:18px;
    color:var(--text-color-dark-gray);
}
/* 关于我们的样式 */
.about-us{
    padding-bottom: 32px;
}

.features{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: 126px 126px ;
    column-gap: 5vw;
}

.feature{
    display: grid;
    grid-template-areas: "icon title" "icon content";
    grid-template-columns: 60px 1fr;
    grid-template-rows: 1fr 3fr;
}
/* 图标样式 */
.feature i.fas{
    grid-area: icon;
    font-size: 34px;
    color: var(--primary-color);
}

.feature-title{
    grid-area: title;
    font-size: 18px;
    color:var(--text-color-darker)
}

.feature-content{
    grid-area: content;
    color:var(--text-color-gray);
    margin-top:8px
}
/* 成功案例的样式 */
.showcases{
    max-width: unset;
    padding: 0;
    padding-top: 72px;
}
/* 筛选按钮样式 */
.filter-btns{
    margin-top: 54px;
    margin-bottom: 38px;
}

.filter-btn{
    margin:0 7px;
    background-color: var(--secondary-color);
    border: 0;
    color: var(--text-color-dark-gray);
    padding: 8px 18px;
    border-radius: 4px;
    cursor: pointer;
    transition: 0.4s;
}

.filter-btn:focus,.filter-btn:active{
    outline:none;
}

.filter-btn.active,.filter-btn:hover{
    background-color: var(--primary-color);
    color: white;
}
/* 图片排版样式 */
.showcases .cases{
    width: 100vw;
}

.showcases .case-item{
    width: 25vw;
    height: 20vw;
    overflow: hidden;
}

.case-item img{
    height: 100%;
    object-fit: cover;
}
/* 服务流程的样式 */
.service{
    padding-top: 131px;
}

.services{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    grid-template-rows: 1fr 1fr;
    column-gap: 38px;
    row-gap: 34px;
}

.service-item{
    display: grid;
    grid-template-areas:
    "icon title"
    "icon content";
    grid-template-columns: 70px 1fr;
    grid-template-rows: 1fr 3fr;
    padding: 24px;
    box-shadow: 0px 0px 18px rgba(0,0,0,0.06);
}

.service-item i.fas{
    grid-area: icon;
    font-size: 42px;
    color: var(--primary-color);
    padding-top: 6px;
}

.service-item .service-title{
    grid-area: title;
    color: var(--text-color-darker);
    font-size: 24px;
}

.service-item .service-content{
    grid-area: content;
    color:var(--text-color-gray);
    line-height: 30px;
    font-size:16px;
    margin-top:8px
}
/* 团队介绍的样式 */
.team-intro{
    margin-top: 48px;
    padding-top: 62px;
    padding-bottom: 52px;
}

.team-members{
    display: grid;
    grid-template-columns: repeat(4,1fr);
    column-gap: 40px;
    margin-top: 86px;
}

.team-member{
    background-color: white;
    box-shadow:  0px 0px 24px rgba(0,0,0,0.2);
    text-align: center;
    padding-bottom: 28px;
    transition: 0.4s;
    display: grid;
    justify-items: center;
}

.profile-image{
    overflow: hidden;
}

.profile-image img{
    width:100%;
    height: 355px;
    object-fit: cover;
    object-position: top center;
}

.team-member .name{
    margin-top: 18px;
    font-size: 18px;
    font-weight: 700;
    color:var(--text-color-dark)
}

.team-member .position{
    color: var(--text-color-dark-gray);
    margin-top: 12px;
    margin-bottom: 18px;
}

.social-links{
    width: 100%;
    max-width: 200px;
    display: flex;
    justify-content: space-between;
    padding: 0 42px;
}

.social-links li{
    list-style: none;
}

.social-links li a{
    color:var(--text-color-dark);
    text-decoration: none;
}
/* 设置鼠标响应样式 */
.team-member:hover{
    transform: translateY(-20px) scale(1.05);
    box-shadow: 0px 0px 36px rgba(0,0,0,0.1);
}
/* 数据部分的样式*/
.data-section{
    margin-top: 100px;
    max-width: unset;
    width: 100vw;
    height: 255px;
    background-image: url(images/adult-business-computer-contemporary-380769.jpg);
    background-size: cover;
    background-position: center;

    display: grid;
    grid-template-columns: repeat(4,minmax(auto,220px));
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 20;
}

.data-section::before{
    content:"";
    display: block;
    position: absolute;
    background-color: var(--backdrop-color);
    width: 100%;
    height: 100%;
    z-index: 1;
}

.data-piece{
    width: 250px;
    display: grid;
    grid-template-rows: repeat(3,1fr);
    justify-items: center;
    color: white;
    position: relative;
    z-index: 40;
}

.data-piece i.fas{
    font-size: 44px;
}

.data-piece .num{
    margin-top: 7px;
    font-size: 41px;
    font-weight: 600;
}

.data-piece .data-desc{
    font-size: 18px;
    font-weight: 500;
}
/* 公司动态 */
.company-activities{
    margin-top: 88px;
}

.activities{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    column-gap: 40px;
}

.activity{
    box-shadow: 0px 0px 24px rgba(0,0,0,0.1);
    padding: 24px;
    transition: 0.4s;
}

.act-image-wrapper{
    height: 255px;
    overflow: hidden;
    margin:-24px;
    margin-bottom: 0
}

.act-image-wrapper img{
    min-height: 300px;
    object-fit: cover;
}

.activity .meta{
    margin-top: 20px;
    margin-bottom: 12px;
    color: var(--text-color-light-gray);
    font-size: 12px;
    display: flex;
}

.activity .meta >p:last-child{
    margin-left:36px
}

.act-title {
    color: var(--text-color-dark);
    font-size: 18px;
    margin-bottom: 16px;
}

.activity article{
    color: var(--text-color-gray);
    letter-spacing: 0.54px;
    line-height: 24px;
}

.readmore-btn{
    border: 0;
    color: white;
    background-color: var(--primary-color);
    border-radius: 4px;
    padding: 6px 14px;
    margin-top:24px
}

.activity:hover{
    transform: translateY(-20px) scale(1.05);
    box-shadow: 0px 0px 36px rgba(0,0,0,0.1);
}
/* 底部信息样式 */
footer{
    margin-top:124px;
    background-color: #181818;
    display: grid;
    justify-items: center;
    padding-top: 72px;
    padding-bottom: 24px;
}

.footer-menus{
    /* height: 300px; */
    width: 100%;
    max-width: 1180px;
    display: grid;
    grid-template-columns: 2fr repeat(4,1fr);
    padding: 0  80px;
    position: relative;
}

.menu-title{
    font-size:26px;
    color:white;
    font-weight: 500;
    margin-bottom: 20px;
}

.contact-us{
    justify-self: start;
    color:var(--text-color-lightest);
    margin-right: 30px;
}

.contact-us p:not(:first-child){
    padding-bottom: 16px;
}

.menu-items li{
    list-style: none;
    padding-bottom: 8px;
}

.menu-items li a{
    text-decoration: none;
    font-weight: 300;
    color: var(--text-color-lightest);
}

.icp-info{
    margin-top:24px ;
    margin-bottom: 16px;
}

.icp-info,
.rights{
    grid-column: 1 /-1;
    justify-self: center;
    color:white;
}

.scrollToTop {
    display: none;
    position: relative;
    z-index: 300;
}

.scrollToTop a{
    width: 32px;
    height: 32px;
    border-radius: 4px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    position: fixed;
    bottom: 60px;
    right: 30px;
}

/* 实现响应式布局 */
@media(max-width:1200px) {
    header nav{
        display: none;
    }

    header{
        grid-template-columns: repeat(2, 1fr);
    }

    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{
        position:absolute;
        display: grid;
        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);
    }

    header.open .burger-line2{
        transform: translateX(5px);
        opacity: 0;
    }

    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;
    }

    .activities{
        grid-template-columns: repeat(2,1fr);
        row-gap: 36px;
    }
}


@media(max-width:1100px){
    .slide-caption h1{
        font-size: 48px;
    }

    .slide-caption h3{
        font-size:18px;
    }

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

    .data-section{
        grid-template-columns: repeat(2,minmax(200px,auto));
        padding: 24px 0;
        height: auto;
        row-gap: 24px;
        background-size: 200%;
    }
    .showcases .case-item{
        width: calc(100vw/3);
    }

}


@media (max-width:768px) {
    section, .footer-menus{
        padding: 0 40px;
    }

    .footer-menus{
        grid-template-columns: 2fr repeat(2,1fr);
        row-gap: 24px;
    }
    .contact-us{
        grid-row: 1 / 3;
    }

    .footer-menu{
        text-align: right;
    }

    .activities{
        grid-template-columns: 1fr;
        row-gap: 36px;
    }

    .data-section{
        grid-template-columns: 1fr;
        width: 300%;
    }

    .team-members{
        grid-template-columns: minmax(200px, 400px);
    }

    .features,
    .services{
        grid-template-columns: 1fr;
    }

    .showcases .case-item{
        width: calc(100vw /2);
        height: 30vw;
    }
}

@media (max-width:576px) {
    .slide-caption h1{
        font-size: 28px;
    }

    .slide-caption h3{
        font-size: 14px;
    }

    .explore-btn {
        font-size:14px;
        padding: 8px 18px;
    }

    .showcases .case-item{
        width: 100vw;
        height: 60vw;
    }

    .footer-menus{
        grid-template-columns: 1fr;
    }

    .footer-menu {
        justify-self: start;
        text-align: left;
    }
}