.banner {
  background: #000;
  color: #fff;
  min-height: 500px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-bottom: 0;
}
.banner h2 {
  font-size: 50px;
}
.banner .cir {
  width: fit-content;
  margin: 30px auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}
.banner .cir span {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  display: block;
  background: #fff;
}
.banner .cir span.green {
  background: #48ce55;
}
.tab {
  border-bottom: 1px solid #eee;
  padding: 20px 0;
}
.tab .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.cir {
  width: fit-content;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin: 10px 0;
}
.cir span {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  display: block;
  background: #000;
}
.cir span.green {
  background: #48ce55;
}
.s1 {
  margin: 50px 0;
  padding: 50px 0;
}
.s1 img {
  width: 100%;
}
.s1 .t-tit {
  padding: 10px 0;
  border-bottom: 1px dashed #eee;
  margin-bottom: 20px;
}
.s1 .t-tit h2 {
  margin-top: 20px;
}
.s1 p {
  text-align: justify;
  line-height: 2;
}
.s2 {
  margin: 50px 0;
  background: #fafafa;
  padding: 50px 0;
}
.s2 img {
  width: 100%;
}
.s2 .t-tit {
  padding: 10px 0;
  border-bottom: 1px dashed #eee;
  margin-bottom: 20px;
}
.s2 .t-tit h2 {
  margin-top: 20px;
}
.s2 p {
  text-align: justify;
  line-height: 2;
}
.s3 {
  margin: 50px 0;
  padding: 50px 0;
}
.s3 img {
  width: 100%;
}
.s3 h5 {
  font-size: 14px;
}
.s3 .t-tit {
  padding: 10px 0;
  border-bottom: 1px dashed #eee;
  margin-bottom: 20px;
}
.s3 .t-tit h2 {
  margin-top: 20px;
}
.s3 p {
  text-align: justify;
  line-height: 2;
}
.s4 {
  margin: 50px 0;
  background: #fafafa;
  padding: 50px 0;
}
.s4 .row {
  margin-bottom: 50px;
}
.s4 img {
  width: 100%;
}
.s4 .tit2 {
  text-align: center;
}
.s4 .tit2 .cir {
  margin: 10px auto;
}
.s4 .t-tit {
  padding: 10px 0;
  border-bottom: 1px dashed #eee;
  margin-bottom: 20px;
}
.s4 .t-tit h2 {
  margin-top: 20px;
}
.s4 p {
  text-align: justify;
  line-height: 2;
}
.s5 {
  padding: 50px 0;
  /* 容器 */
  /* 中间竖线 */
  /* 每一项 */
  /* 左右布局 */
  /* 圆点 */
  /* 左侧点 */
  /* 右侧点 */
  /* 颜色 */
  /* 内容 */
}
.s5 .t-tit {
  text-align: center;
  border-bottom: 1px solid #eee;
  margin-bottom: 50px;
}
.s5 .t-tit h5 {
  font-size: 14px;
}
.s5 .timeline {
  position: relative;
  width: 100%;
  margin: 80px 0;
}
.s5 .timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: #ddd;
  transform: translateX(-50%);
}
.s5 .t-item {
  position: relative;
  width: 50%;
  padding: 0 60px;
  box-sizing: border-box;
}
.s5 .t-item.left {
  left: 0;
  text-align: right;
}
.s5 .t-item.right {
  left: 50%;
  text-align: left;
}
.s5 .t-dot {
  position: absolute;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  z-index: 2;
}
.s5 .t-item.left .t-dot {
  right: -6px;
}
.s5 .t-item.right .t-dot {
  left: -6px;
}
.s5 .t-dot.green {
  background: #48ce55;
}
.s5 .t-dot.black {
  background: #000;
}
.s5 .t-content h3 {
  font-size: 22px;
  margin: 0 0 8px;
  color: #333;
}
.s5 .t-content h4 {
  font-size: 16px;
  margin: 0 0 10px;
  font-weight: 500;
  color: #444;
  margin-bottom: 20px;
}
.s5 .t-content p {
  font-size: 14px;
  color: #999;
  line-height: 2;
  margin: 0;
  margin-bottom: 20px;
}
@media (max-width: 768px) {
  .banner {
    margin-bottom: 0;
    min-height: 300px;
  }
  .banner h2 {
    font-size: 30px;
  }
  .tab .container .tab-info {
    width: 50%;
  }
  .s1,
  .s2,
  .s3,
  .s4,
  .s5 {
    padding: 20px 0;
  }
  .s1 .t-tit,
  .s2 .t-tit,
  .s3 .t-tit,
  .s4 .t-tit,
  .s5 .t-tit {
    text-align: center;
  }
  .s1 .t-tit .cir,
  .s2 .t-tit .cir,
  .s3 .t-tit .cir,
  .s4 .t-tit .cir,
  .s5 .t-tit .cir {
    margin: 10px auto;
  }
  .s3 {
    margin: 30px 0;
  }
  h2 {
    margin: 0 !important;
  }
  .s4 .row {
    margin-bottom: 0;
  }
  .s5 {
    padding: 0;
  }
  .s5 .t-tit {
    margin-bottom: 0;
  }
  .s5 .timeline {
    margin: 20px 0;
  }
  .s5 .timeline::before {
    left: 10px;
  }
  .s5 .t-item {
    width: 100%;
    padding-left: 40px;
    padding-right: 20px;
    text-align: left !important;
  }
  .s5 .t-item.left,
  .s5 .t-item.right {
    left: 0;
  }
  .s5 .t-dot {
    left: 4px !important;
    right: auto !important;
  }
}