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

img {
  width: 100%;
}

:root {
  /* --primary-color: #ff434f; */
  --primary-color: #ffdb45;

  --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, 0.7);
}

header {
  width: 100vw;
  height: 80px;
  display: grid;
  padding: 0 40px;

  grid-template-columns: 1fr 2fr;
  align-content: center;
  position: relative;
  z-index: 200;
}

.logo {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-color-lightest);
}

header nav {
  justify-self: end;
  margin: auto 0;
}

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

header nav a {
  /* color: var(--text-color-lightest); */
  color: var(--text-color-gray);
  text-decoration: none;
  /* 去掉下划线 */
  margin: 0 24px;
}

header.burger {
  display: none;
}

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);
  }
}

/* 轮播图 */
.glide {
  position: relative;
  top: -80px;
  z-index: 50;
}

.glide__slide img,
.glide__slide video {
  width: 100vw;
  /* height: 100vh; */
  height: 70vh;
  /* 自动等比例缩放 */
  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;
  /* 字体像素 */
  font-weight: 600;
  /* 字体加粗 */
}

.slide-caption h3 {
  font-size: 24px;
  margin: 48px 0;
  /* 前面的是上下间距后面的是左右间距 */
}

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

.slide-caption > * {
  opacity: 1;
}

.backdrop {
  background: var(--backdrop-color);
  z-index: 60;
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  /* 左对齐与上对齐 */
  opacity: 0.5;
}

.explore-btn {
  padding: 14px 32px;
  background-color: var(--primary-color);
  border: 0;
  /* 去边框 */
  border-radius: 4px;
  /* 圆角 */
  color: var(--text-color-lightest);
  font-size: 18px;
  cursor: pointer;
  /* 点击箭头 */
  outline: none;
}

.content-wrapper {
  display: flex;
  align-items: center;
  justify-self: center;
  /* text-align: center; */
  flex-direction: column;
}

/* 关于我们 */

section {
  display: grid;
  justify-self: 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: 100%;
  height: 4px;
  background-color: var(--primary-color);
  margin-top: 14px;
  /* transform: translateX(10%); */
}

.title2 {
  font-size: 34px;
  color: var(--text-color-darker);
}

.title2::after {
  content: "";
  display: block;
  width: 100%;
  height: 4px;
  background-color: var(--primary-color);
  margin-top: 14px;
  /* transform: translateX(10%); */
}

.intro {
  margin: 28px 0 30px 0;
  /* text-indent: 2em; */
  font-size: 18px;
  color: var(--text-color-dark-gray);
}

.features {
  display: grid;
  /* 重复几次，重复的值  1fr：容器宽度的1/3*/
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 126px 126px;
  column-gap: 5vw;
}

.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;
}

.feature i.fas {
  grid-area: icon;
  /* 这里的icon是用于为网格项分配名称。 */
  font-size: 34px;
  color: var(--primary-color);
}

.feature {
  display: grid;
  grid-template-areas:
    "icon title"
    "icon content";
  /* 可以使用 grid-area 属性命名网格项目，然后在 grid-template-areas 属性中引用该名称。
    每个区域由撇号定义。请使用句号来引用没有名称的网格项目。名称数量与占用面积的有关*/
  grid-template-columns: 60px 1fr;
  grid-template-rows: 1fr 3fr;
}

/* 成功案例 */
.showcases {
  max-width: unset;
  padding: 0px;
  padding-top: 72px;
  display: grid;
  place-items: center;
  justify-self: center;
}

.filter-btns {
  margin-top: 54px;
  margin-bottom: 38px;
}

.filter-btn {
  margin: 3px 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.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 {
  max-height: 320px;
  height: 100%;
  object-fit: cover;
}

/* 服务流程 */
.service {
  padding-top: 131px;
  display: grid;
  place-items: center;
}

.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 */
.team-intro {
  margin-top: 48px;
  padding-top: 62px;
  padding-bottom: 52px;
  display: grid;
  place-items: center;
  justify-self: center;
}

.team-members {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 24px;
  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: 264px;
  object-fit: cover;
  object-position: top center;
}

.team-member .name {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-color-dark);
}

.team-member .position {
  color: var(--text-color-dark-gray);
  margin-top: 20px;
  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;
}

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

/* 数据部分 */
.data-section {
  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: 80px;
  display: grid;
  place-items: center;
  justify-self: center;
}

.activities {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 50px;
}

.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;
  /* 字间距 */
  line-height: 24px;
  /* 行间距 */
}

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

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

/* 底部信息 */
footer {
  margin-top: 124px;
  background-color: #181818;
  display: grid;
  justify-items: center;
  padding-top: 72px;
  padding-bottom: 24px;
}

.footer-menus {
  width: 100%;
  max-width: 1280px;
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  padding: 0 80px;
  position: relative;
}

.menu-title {
  font-size: 16px;
  color: white;
  font-weight: 500;
  margin-bottom: 20px;
}

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

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

.contact-us p a {
  text-decoration: none;
  font-weight: 300;
  color: var(--text-color-lightest);
}

.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;
}

.scroll-to-top {
  display: none;
  position: relative;
  z-index: 300;
}

.scroll-to-top 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;
}