body{
  background: #1D1D1F;
  
}
.index-top{
  width: 100%;
  position: sticky;
  top: 0;
  height: 116px;
  z-index: 99;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}
.menu-box{
  width: 100%;
  background: #1D1D1F;
}
.menu-content{
  width: 1140px;
  height: 66px;
  margin: 0 auto;
}
.menu-content .logo-box{
  width: 93px;
  height: 25px;
  margin-right: 229px;
  cursor: pointer;
}
.menu-list{
  width: calc(100% - 320px);
}
.menu-content .menu-item{
  cursor: pointer;
  margin-right: 24px;
}
.menu-content .menu-item:nth-last-child(1){
  margin-right: 0;
}
.menu-content .menu-item:hover span{
  color:#B6B7B8;
}
.menu-content .menu-item span{
  color: #e7e7e7;
  transition: all .2s;

}
.buy-box{
  width: 100%;
  height: 50px;
  background: #23252B;

}
.buy-box .buy-btn{
  width: 60px;
  height: 30px;
  background: linear-gradient( 93deg, #FADCCC 0%, #E8C9B8 43%, #A3806C 100%);
  border-radius: 36px;
  margin-left: 78px;
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  border: none;
}
.section1{
  width: 100%;
  min-height: 100vh;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images//section1-bg.png) no-repeat;
  background-size: cover;
}
.section1 video{
  width: 100%;
  height: auto;
  /* object-fit: contain; */
}
.section .content-box{
  width: 100%;
  max-width: 1530px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto;
  overflow: hidden;
}
.section2, .section5{
  width: 100%;
  background: #fff;
  position: relative;
}
.section2 .section2-content{
  height: 1120px;
  position: relative;
  z-index: 1;
}
.section2-content img{
  width: 90%;
  max-width: 1530px;
  height: auto;
  margin-top: 52px;
}
.title-box{
  text-align: center;
  font-weight: 400;
  font-size: 30px;
  color: #666666;
  padding: 0 24px;

}
.title-box .title{
  font-weight: bold;
  font-size: 60px;
  color: #111111;
  line-height: 60px;
  margin: 86px 0 68px;
}
.title-box .title span{
  color: #717171;
}

.section2 .top-bg{
  width: 100%;
  height: 678px;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/section2-top-bg.png);
  background-size: cover;
  position: absolute;
  top: 440px;
  left: 0;
  z-index: 0;
}
.rotate-video-box{
  width: 100%;
  background: #1A1A1C;
}
.rotate-video-box .video-box{
  width: 90%;
  max-width: 1530px;
  position: relative;
  margin-top: 115px;
}
 .video-box video{
  width: 100%;
  height: auto;
}
.video-box .handle-icon{
  width: 32px;
  height: 32px;
  position: absolute;
  bottom: 22px;
  left: 20px;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/pause-icon.png);
  background-size: cover;
  z-index: 99;
  cursor: pointer;
}
.handle-icon.pause{
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/play-icon.png);
  background-size: cover;
}

.section3{
  width: 100%;
  height: 1534px;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/theme-bg.png);
  background-size: 100% 100%;
}
.section3 .title-box{
  color: #999;
}
.section3 .title-box .title{
  color: #fff;
}
.section3 .title-box .title span, .section4 .title-box .title{
  background: linear-gradient(to bottom, #FCF4F0 0%, #F2D3C4 100% );
  -webkit-background-clip: text;
  color: transparent;
}
.theme-img{
  width: 1298px;
  height: 620px;
  margin-top: 138px;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/themes-img.png);
  background-size: cover;
}
.section4{
  margin-top: -286px;
  z-index: 10;
  position: relative;
}
.section4 .project-list{
  width: 100%;
}
.section4 .project-list .project-item{
  width: 100%;
  max-width: 1530px;
  height: auto;
  margin-top: -200px;
  display: flex;
  align-items: center;
  justify-items: center;
  flex-wrap: nowrap;
}
.section4 .project-list .project-item img{
  width: 50%;
  max-width: 870px;
  height: auto;
}
 .project-desc{
  flex: 1 1 576px;
  font-size: 24px;
  color: #999999;
  font-weight: 400;
  margin-left: 82px;
}
.project-desc .project-name{
  font-weight: 500;
  font-size: 40px;
  color: #FFFFFF;
  margin-bottom: 30px;
}
.section4 .project-list .project-item:nth-child(even){
  flex-direction: row-reverse;
}
.project-item:nth-child(1){
  margin-top: 0px !important;
}
.bottom-box{
  width: 90%;
  max-width: 1530px;
  height: auto;
  padding: 56px 112px 34px 60px;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/last-project-item-bg.png);
  background-size: 100% 100%;
  margin: -90px 0 140px;
}
.bottom-box img{
  width: 466px;
  height: 466px;
}
.bottom-box .project-desc{
  width: 60%;
  max-width: 702px;
  margin-left: 0;
}

.section5 img{
  width: 90%;
  height: auto;
  margin: 68px auto 86px;
}
.section6 .content-box{
  width: 90%;
  max-width: 1530px;
  margin: 86px auto;
  background: url(https://shuming-global-offical.oss-us-east-1.aliyuncs.com/static/official_web/images/company-profile-bg.png);
  background-size: 100% 100%;
  align-items: self-start;
  padding: 120px 0px 120px 72px;
}
.section6 .desc-box{
  width: 50%;
  max-width: 725px;
  font-weight: 500;
  font-size: 24px;
  color: #111111;
}
.section6 .desc-box .text-name{
  font-weight: bold;
  font-size: 60px;
  color: #1A1A1C;
  line-height: 60px;
  margin-bottom: 44px;
}
 /* -------------------------- 动画核心样式 -------------------------- */
/* 动画模块：初始状态（透明 + 下移） */
.animate-section {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  /* 父模块过渡（快速入场） */
}

/* 动画模块：激活后状态（可见 + 原位） */
.animate-section.active {
  opacity: 1;
  transform: translateY(0);
}

/* 子元素：初始状态（继承父模块的不可见，单独设置过渡） */
.animate-item, .project-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* 父模块激活后，子元素依次激活（通过延迟实现分步） */
.animate-section.active .animate-item {
  opacity: 1;
  transform: translateY(0);
}
.project-item{
  transition-delay: 0.2s;
}
.project-item.active {
  opacity: 1;
  transform: translateY(0);
}

/* 子元素延迟配置（按顺序：标题 → 文本 → 图片） */
.animate-item.title, .project-item .project-desc .project-name {
  transition-delay: 0.2s;
}

.animate-item.desc, .project-item .project-desc .project-text {
  transition-delay: 0.4s;
}

.animate-item.img, .project-item .img {
  transition-delay: 0.8s;
}

.footer{
  width: 100%;
  height: 66px;
  color: #e7e7e7;
  font-size:  12px;
  background: #1D1D1F;
}
.footer img{
  width: 93px;
  height: 25px;
  margin: 0.24rem 0;
}