* {
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
a {
  color: #000;
  text-decoration: none;
}
.fixed {
  z-index: 999;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background-color: #fff;
}
#app {
  min-width: 917px;
  overflow-x: hidden;
}
.header {
  display: flex;
  width: 100%;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-image: url('../static/数智云服-20250804.jpg');
}
.header>img {
  width: 100%;
}
.header_sub {
  width: 80%;
  max-width: 1400px;
  margin: 0 auto;
}
.header_sub>img {
  width: 100%;
}
.content_btnsBox {
  transition: top .5s;
  max-width: 1456px;
  width: 85%;
  margin: 0 auto;
}
.btns {
  font-size: 10px;
  font-weight: bold;
  text-align: center;
}
.btns img {
  width: 50px;
  height: 50px;
}
.content_subBox {
  width: 80%;
  max-width: 1327px;
  margin: 0 auto;
}
.subBox img {
  width: 100%;
}
.subBox_header {
  position: relative;
  margin-bottom: 20px;
  background-size: 100% 100%;
  height: 5.5vw;
}
.subBox_header span {
  position: absolute;
  top: calc(50% + 4px);
  left: 11.5%;
  transform: translateY(-50%);
  line-height: 24px;
  color: #fff;
  font-weight: bold;
}
.subBox_title {
  margin: 8px 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.subBox_title i {
  display: inline-block;
  width: 48px;
  height: 22px;
  background-image: url('../static/小标题.png');
  background-size: 100% 100%;
}
.subBox_title span {
  margin-left: 12px;
  font-size: 18px;
  color: #D23F2F;
  font-weight: bolder;
}
.content_subBoxFixed {
  width: 100%;
}
.btnLine {
  height: 2px;
  background-color: #CE2F1E;
}
.btnLine img {
  width: 50px;
  height: 35px;
  margin-left: 45px;
}
#content_btnsBox {
  width: 100vw;
  max-width: 100vw;
}
.aTxt {
  display: block;
  margin-top: 20px;
  margin-bottom: 40px;
  margin-left: 60px;
  color: #2C83EB;
  font-size: 18px;
  font-weight: bold;
}
/* ✅ 移动端样式（手机 + 平板） */
@media screen and (max-width: 1024px) {
  #app {
    min-width: 100vw;
  }
  .header {
    padding: 25px 0;
  }
  .header_sub {
    min-width: 100vw;
  }
  .content_btnsBox {
    padding: 15px 0;
    min-width: 100vw;
  }
  #content_btnsBox {
    display: flex;
    overflow: auto;
  }
  #content_btnsBox .btns {
    width: 70px;
  }
  .content_subBox {
    min-width: 100vw;
  }
  .subBox_header {
    min-height: 35px;
  }
  .subBox_header span {
    font-size: 12px;
  }
  #content_btnsBoxRe .content_btns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
  #content_btnsBox .content_btns {
    display: flex;
  }
  .btnLine {
    display: none;
  }
  .block {
    top: 0!important;
  }
  .none {
    top: -100%!important;
  }
}

/* 兼容 iPad 横屏：专门针对设备宽度 */
@media screen and (min-device-width: 768px) and (max-device-width: 1024px) {
  #app {
    min-width: 100vw;
  }
  .header {
    padding: 25px 0;
  }
  .header_sub {
    min-width: 100vw;
  }
  .content_btnsBox {
    padding: 15px 0;
    min-width: 100vw;
  }
  .content_subBox {
    min-width: 100vw;
  }
  .subBox_header {
    min-height: 35px;
  }
  #content_btnsBox {
    display: flex;
    overflow: auto;
  }
  #content_btnsBox .btns {
    width: 70px;
  }
  .subBox_header span {
    font-size: 12px;
  }
  #content_btnsBoxRe .content_btns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
  #content_btnsBox .content_btns {
    display: flex;
  }
  .btnLine {
    display: none;
  }
  .block {
    top: 0!important;
  }
  .none {
    top: -100%!important;
  }
}
/* ✅ 桌面端样式（大于平板） */
@media screen and (min-width: 1025px) {
  #app {
    min-width: 917px;
  }
  .header {
    padding: 50px 0;
  }
  .header_sub {
    min-width: 880px;
  }
  .content_btnsBox {
    min-width: 917px;
  }
  .content_subBox {
    min-width: 834px;
  }
  .btns {
    white-space: nowrap;
  }
  .subBox_header {
    min-height: 75px;
  }
  .subBox_header span {
    font-size: 24px;
  }
  .content_btns {
    display: grid;
    padding: 15px 0;
    grid-template-columns: repeat(8, 1fr);
  }
}