/* 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: 100%;
    height: 90px;
    /* 栅格布局 */
    display: grid;
    padding: 0 20px;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 200;
    background-color: #14154b;
}

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

.vader {
    height: 15%;
    width: 15%;
    top: 10px;
    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: 10px;
    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;*/
    /*margin: -120px 0 0 0;*/
    z-index: 50;
}

.glide__slide img,
.glide__slide video {
    width:100vw;
    height: auto;
    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: 50px;
}

.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;
}

.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(2, 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 */

/* 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;
    }
}