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

img{
    width: 100%;
}

/* 设置主要色调和次要色调 */
:root{
    --primary-color:rgb(71, 102, 255);
    --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)
}

/* head.sticky,
.glide,
section,
footer{
    max-width: 100vm;
} */

/* 头部导航 */
header{
    width:100vm;
    height: 110px;
    /* 栅格布局 */
    display:grid;
    padding:0 20px;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    position: relative;
    z-index:200;
}

.logo{

    font-size: 24px;
    font-weight: 600;
    color: var(--text-color-lightest);
    /* width:80%; */

}

.vader{
    height: 30%;
    width:30%;
    top:10px;
    left:0;
    /* vertical-align: middle; */
    /* left:20px; */
}

/* .vader1{
    display: inline;
    position: relative;
    width:100px;
    top:0px;
    left: 0px */


header nav{
    justify-self: end;
    text-align: right;
    display:flex;
    justify-content: space-between;

}

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;
}

header.sticky{
    top:0px;
    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 .log,
header.sticky nav a,
header.sticky nav i {
    color: var(--text-color-darker);

}

@keyframes dropDown{
    from{
        transform:translateY(-100px);
    }
    to{
        transform:translateY(0);
    }
}
.glide{
    position: relative;
    top:-120px;
    z-index: 50;
}

.glide__slide img,
.glide__slide video{
    width:100vw;
    height: 100vh;
    object-fit:cover;
}

.slide-caption{
    position: absolute;
    z-index: 70;
    color: var(--text-color-lightest);
    text-align: center;
    max-width: 60vw;
}

.glide__slide{
    display:flex;
    align-items: center;
    justify-content:center;
}

.slide-caption h1{
    font-size: 54px;
    font-weight: 600;
}

.slide-caption h3{
    font-size: 24px;
    margin: 48px 0;
}

.slide-caption > *{
    opacity: 0;
}

.backdrop{
    background: var(--backdrop-color);
    z-index: 60;
    position: absolute;
    width: 100%;
    height: 100%;
    left:0;
    top:0;
    opacity: 0.5;
}

.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;

}

.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%);
}

.intro{
    margin:20px 0 60px 0;
    font-size: 20px;
    color: var(--text-color-dark-gray);
    text-align: center;
}

.intro i{
    color: var(--primary-color);
    vertical-align: -2px;
    font-weight:600;
    font-style: normal;
}

/* 关于我们 */
.about-us{
    padding-bottom: 32px;
}

.features{
    display:grid;
    grid-template-columns: repeat(3,1fr);
    grid-template-rows: repeat(2,180px);
    column-gap: 5vw;
}

.feature{
    display:grid;
    grid-template-areas: 
        "icon title"
        "icon content";
    grid-template-columns:60px 1fr;
    grid-template-rows: 1fr 3fr;

}

.feature i.fas,.feature i.fab{
    grid-area: icon;
    font-size: 34px;
    color: var(--primary-color);
    margin-top: 19px;
}

.feature-title{
    grid-area: title;
    font-size: 18px;
    color: var(--text-color-darker);
    margin-bottom: 8px;
}

.feature-content{
    grid-area: content;
    color: var(--text-color-gray);
    margin-top: 8px;
}

/* 成功案例 */
.showcases{
    max-width: unset;
    padding:0;
    padding-top: 72px;
}

.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-btns:active{
    outline:none;
}

.filter-btn.active, .filter-btn:hover{
    background-color: var(--primary-color);
    color:white;
}

.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 */
.service{
    padding-top: 161px;

}

.services{
    display:grid;
    grid-template-columns: repeat(3,1fr);
    grid-template-rows: repeat(2,240px);
    column-gap: 28px;
    row-gap: 24px;
}

.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: 0 0 18px rgba(0,0,0,0.06);
}

.service-item i.fas{
    grid-area:icon;
    font-size: 34px;
    color: var(--primary-color);
    padding-top: 20px;
}

.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;
}

.map{
    padding-top: 120px;

}

.cmap{
    margin: 80px;
}

/* 团队介绍 */

.team-intro{
    margin: 48px 0;
    padding-top: 62px;
    padding-bottom: 52px;
}

.team-members{
    display:grid;
    grid-template-columns: repeat(4,1fr);
    column-gap: 24px;
    margin-top: 86px;
}

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

.photo{
    overflow: hidden;
}

.photo img{
    width:100%;
    height: 264px;
    object-fit: cover;
    object-position: top center;
}

.team-member .name{
    margin-top: 18px;
    font-size: 18px;
    font-weight: 500;
    color: var(--text-color-darker);
}

.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-darker);
    font-size: 24px;
    text-decoration: none;
}

.team-member:hover {
    transform:translateY(-20px) scale(1.05);
    box-shadow: 0 0 36px rgba(0,0,0,0.1);
}

/* 数据部分 */

.data-section{
    max-width: 100%;
    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: 35px;
    font-weight: 500;
}

.data-piece .data-desc{
    font-size: 20px;
    font-weight: 400;
}

footer {
    margin-top: 124px;
    background-color: #181818;
    display: grid;
    justify-items: center;
    padding-top: 72px;
    padding-bottom: 24px;
  }
  
  /* 底部菜单 */
  .footer-menus {
    width: 100%;
    max-width: 1180px;
    display: grid;
    /* 5列布局 */
    grid-template-columns: 2fr repeat(4, 1fr);
    padding: 0 80px;
    position: relative;
  }
  
  /* 导航菜单，靠右对齐 */
  .footer-menu {
    justify-self: end;
  }
  
  /* 一级菜单 */
  .menu-title {
    font-size: 20px;
    color: white;
    font-weight: 600;
    margin-bottom: 20px;
  }
  
  /* 联系我们，靠左对齐 */
  .contact-us {
    justify-self: start;
    color: var(--text-color-lightest);
  }
  
  /* 联系我们，文字 */
  .contact-us p:not(:first-child) {
    padding-bottom: 16px;
  }
  
  /* 菜单项 */
  .menu-items li {
    list-style: none;
    padding-bottom: 8px;
  }
  /* 菜单链接 */
  .menu-items li a {
    text-decoration: none;
    font-weight: 300;
    color: var(--text-color-lightest);
  }
  
  /* 备案信息 */
  .icp-info {
    margin-top: 24px;
    margin-bottom: 16px;
  }
  
  /* 备案信息，版权信息 */
  .icp-info,
  .rights {
    /* 占满整行，-1代表最后一个编号 */
    grid-column: 1 / -1;
    /* 居中对齐 */
    justify-self: center;
    color: white;
    font-size: 14px;
  }

.scrollToTop{
    display: none;
}
.scrollToTop a {
    width:32px;
    height:32px;
    border-radius: 4px;
    display:flex;
    align-items:center;
    justify-content: center;
    background-color: var(--primary-color);
    color:white;
    text-decoration: none;
    position: fixed;
    bottom:60px;
    right:30px;
    z-index: 300;
}

/* 自适应，小于1100象素时 */
@media (max-width: 1100px) {
    /* 导航设置为不可见，点击折叠按钮显示全屏导航 */
    header nav {
      display: none;
    }
  
    /* 头部平分两列布局 */
    header {
      grid-template-columns: repeat(2, 1fr);
    }
  
    /* 折叠菜单样式，显示出来 */
    header .burger {
      display: block;
      justify-self: center;
      cursor: pointer;
      position: relative;
      width: 20px;
      height: 6px;
    }
  
    /* 折叠按钮线条样式 */
    .burger-line1,
    .burger-line2,
    .burger-line3 {
      width: 20px;
      height: 2px;
      background-color: var(--text-color-lightest);
      /* position: relative; */
    }
  
    /* 上移第一条线 */
    .burger-line1 {
      position: absolute;
      top: -6px;
    }
    /* 下移第三条线 */
    .burger-line3 {
      position: absolute;
      top: 6px;
    }
  
    /* 全屏导航展开时，折叠按钮设置为深色 */
    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;
    }
  
    /* 全屏导航显示时，折叠按钮第一条线样式 */
    header.open .burger-line1 {
      transform: rotate(45deg) translate(3px, 5px);
    }
  
    /* 全屏导航显示时，折叠按钮第二条线样式 */
    header.open .burger-line2 {
      transform: translateX(5px);
      opacity: 0;
    }
  
    /* 全屏导航显示时，折叠按钮第三条线样式 */
    header.open .burger-line3 {
      transform: rotate(-45deg) translate(3px, -5px);
    }
    /* 全屏导航显示时，logo样式 */
    header.open .logo {
      color: var(--text-color-darker);
      z-index: 40;
    }
  
    /* 全屏导航显示时，导航菜单样式 */
    header.open nav {
      display: grid;
      /* 每行高度为内容的高度，不设置会平分全屏高度 */
      grid-auto-rows: max-content;
      /* 菜单项靠右对齐 */
      justify-self: end;
      justify-items: end;
      position: absolute;
      top: 0;
      left: 0;
      background: white;
      width: 100vw;
      height: 100vh;
      padding: 0 40px;
      opacity: 0;
      /* 下滑效果 */
      animation: slideDown 0.6s ease-out forwards;
    }
    /* 全屏导航显示时，导航菜单项样式和动画 */
    header.open nav > * {
      margin: 4px 0;
      font-size: 18px;
      color: var(--text-color-darker);
      opacity: 0;
      animation: showMenu 0.5s linear forwards 0.4s;
    }
  
    /* 搜索按钮 */
    header.open nav > i.fas {
      margin-top: 10px;
      color: var(--text-color-darker)
    }
  
    /* 导航下滑动画 */
    @keyframes slideDown {
      from {
        height: 0;
        opacity: 0;
      }
      to {
        height: 100vh;
        padding-top: 80px;
        opacity: 1;
      }
    }
  
    /* 菜单项动画 */
    @keyframes showMenu {
      from {
        opacity: 0;
        transform: translateY(-1vh);
      }
      to {
        opacity: 1;
      }
    }
    /* 缩小业务流程标题字体 */
    .service-item .service-title {
      font-size: 20px;
    }
    /* 缩小业务流程内容字体和行距 */
    .service-item .service-content {
      font-size: 14px;
      line-height: 24px;
    }
  
    /* 团队成员改为两列 */
    .team-members {
      grid-template-columns: repeat(2, 1fr);
      column-gap: 6vw;
      row-gap: 36px;
    }
    /* 公司动态改为两列 */
    .activities {
      grid-template-columns: repeat(2, 1fr);
      row-gap: 36px;
    }
  }
  
  /* 小于992象素时 */
  @media (max-width: 992px) {
    /* 轮播标题字号缩小  */
    .slide-caption h1 {
      font-size: 48px;
    }
  
    .slide-caption h3 {
      font-size: 18px;
    }
  
    /* 关于我们和业务流程设置为两列布局 */
    .features,
    .services {
      grid-template-columns: repeat(2, 1fr);
      /* 取消两行布局 */
      grid-template-rows: unset;
    }
    /* 数据部分设置为两列布局 */
    .data-section {
      /* 每列最小宽度为200象素，最大为自动 */
      grid-template-columns: repeat(2, minmax(200px, auto));
      row-gap: 24px;
      height: auto;
      padding: 24px 0;
      background-size: 200%;
    }
    /* 成功案例图片设置为3列 */
    .showcases .case-item {
      width: calc(100vw / 3);
    }
  }
  
  /* 小于768象素时 */
  @media (max-width: 768px) {
    /* 区域的左右内边距设置为40象素 */
    section,
    .footer-menus {
      padding: 0 40px;
    }
  
    /* 关于我们和业务流程设置为1列 */
    .features,
    .services {
      grid-template-columns: 1fr;
    }
  
    /* 团队成员设置为1列 */
    .team-members {
      grid-template-columns: minmax(200px, 400px);
      /* column-gap: 6vw;
      row-gap: 36px; */
    }
  
    /* 数据部分设置为1列 */
    .data-section {
      grid-template-columns: 1fr;
      /* 增加背景尺寸 */
      background-size: 320%;
    }
    /* 公司动态设置为1列 */
    .activities {
      grid-template-columns: 1fr;
      row-gap: 36px;
    }
  
    /* 成功案例图片显示为两列 */
    .showcases .case-item {
      width: calc(100vw / 2);
      height: 30vw;
    }
  
    /* 底部菜单设置为3列 */
    .footer-menus {
      grid-template-columns: 2fr repeat(2, 1fr);
      row-gap: 24px;
    }
  
    /* 联系我们占前两列 */
    .contact-us {
      grid-row: 1 / 3;
    }
  
    /* 菜单文字靠右对齐 */
    .footer-menu {
      text-align: right;
    }
  }
  
  /* 小于576象素 */
  @media (max-width: 576px) {
    /* 缩小轮播标题文字，探索更多按钮文字 */
    .slide-caption h1 {
      font-size: 28px;
    }
  
    .slide-caption h3 {
      font-size: 14px;
    }
  
    .explore-btn {
      padding: 8px 18px;
      font-size: 14px;
    }
  
    /* 成功案例显示为1列 */
    .showcases .case-item {
      width: 100vw;
      height: 60vw;
    }
  
    /* 底部菜单显示为1列 */
    .footer-menus {
      grid-template-columns: 1fr;
      /* row-gap: 24px; */
    }
  
    /* 底部菜单左对齐 */
    .footer-menu {
      justify-self: start;
      text-align: left;
    }
  }
  