html {
  scroll-behavior: smooth;
}
body {
  font-size: 0;
}
img {
  width: 100%;
  height: 100%;
}

/* 顶部导航栏 */
header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 999;

  width: 100%;
}
/* 左侧 */
.header-left {
  float: left;

  padding-top: 0.20833rem; /* 40px */
  padding-left: 1.66666rem; /* 320px */
}
/* logo */
.logo-wrapper {
  width: 0.35416rem; /* 68px */
  height: 0.35416rem; /* 68px */
}
/* 右侧 */
.header-right {
  float: right;
  padding-top: 0.34375rem; /* 66px */
  padding-right: 1.5625rem; /*300px*/
}
/* 链接 */
.link-list {
  overflow: hidden;
}
.link-item {
  float: left;
}
.link-item:not(:last-child) {
  margin-right: 0.22916rem; /* 44px */
}
.link-item > a {
  color: #000;
  font-size: 0.10416rem; /* 20px */
  text-decoration: none;
}

/* 主体内容 */
section {
  overflow: hidden;
}
/* 第一部分 公司名称 */
.part-1 {
  height: 5.625rem; /* 1080px */
  background: url('../images/part_01.png') center center no-repeat;
  background-size: 100% 100%;

  overflow: hidden;
}
/* 联系我们 按钮 */
.contact-us-btn-wrapper {
  margin-top: 2.37041rem;
  margin-left: 0.1rem;
}
.contact-us-btn {
  width: 1.23375rem; /* 210px */
  height: 0.28645rem; /* 55px */
  background-color: rgba(255, 255, 255, 0.5);

  border: 0.01041rem solid #fff; /* 2px */
  border-radius: 0.14322rem; /* 27.5px */

  margin: auto;

  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-us-btn > a {
  color: #fff;
  font-size: 0.10416rem; /* 20px */
  text-decoration: none;
}
/* 鼠标 */
.mouse-wrapper {
  margin-top: 2.1875rem; /* 420px */

  display: flex;
  justify-content: center;
}
.mouse {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.mouse > img {
  width: 0.1302rem; /* 25px */
  height: 0.22395rem; /* 43px */
}
.mouse > span {
  margin-top: 0.07291rem; /* 14px */

  color: #fff;
  font-size: 0.08333rem; /* 16px */
}
/* 第二部分 关于我们 */
.part-2 {
  height: 5.625rem; /* 1080px */
  background: url('../images/part_02.png') center center no-repeat;
  background-size: 100% 100%;
}
/* 第三部分 提供服务 */
.part-3 {
  width: 100%;
  height: 5.625rem; /* 1080px */
  background: url('../images/part_03.png') center center no-repeat;
  background-size: 100% 100%;
  display: flex;
  align-items: flex-end;
  flex-shrink: unset;
}
/* 第四部分 案例介绍 */
.part-4 {
  width: 100%;
}
.swiper-container {
  height: 2.5rem; /* 480px */
}
.arrow {
  width: 0.30208rem; /* 58px */
  height: 0.30208rem; /* 58px */
}
.left-arrow {
  position: absolute;
  top: 50%;
  left: 0;
  z-index: 99;

  background-color: #fff;
}
.right-arrow {
  position: absolute;
  top: 50%;
  right: 0;
  z-index: 99;

  background-color: #fff;
}
.swiper-slide {
  width: 3.33333rem; /* 640px */
}
.swiper-slide > img {
  width: 100%;
  height: 100%;
}
/* 第五部分 客户介绍 */
.part-5 {
  height: 5.625rem; /* 1080px */
  background: url('../images/part_05.png') center center no-repeat;
  background-size: 100% 100%;
  position: relative;
}
.ICP-num{
  width: 300px;
  height: 40px;
  position: absolute;
  bottom: 0;
  left: 50%;
  margin-left: -150px;
  text-decoration:none;
  text-align: center;
  font-size: 20px;
  color: #f2f3f4;
}
/* 底部 */
footer {
}
.contact-us {
  height: 2.39062rem; /* 459px */
  background: url('../images/contact_us.png') center center no-repeat;
  background-size: 100% 100%;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
  background-color: #f5f5f5;
}
/*定义滑块
 内阴影+圆角*/
::-webkit-scrollbar-thumb {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  background-color: #ccc;
}