/* 主体布局 */
.ztmains {
  background: #f7fbff;
  padding: 32px 0 40px 0;
  min-height: 600px;
  font-family: "Microsoft YaHei", Arial, sans-serif;
}
.ztmains .inner {
  display: flex;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  gap: 32px;
}

/* 左侧发展历程卡片 */
.ztmains_l.develop_box {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(19,113,239,0.08);
  padding: 36px 32px 36px 32px;
  flex: 1 1 800px;
  min-width: 600px;
  box-sizing: border-box;
}

.tit {
  font-size: 28px;
  color: #1371ef;
  font-weight: bold;
  text-align: center;
  margin-bottom: 32px;
  letter-spacing: 2px;
}
.tit span {
  color: #bcdcff;
  font-size: 22px;
  font-weight: normal;
}

.develist ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.develist li {
  background: #f4f8ff;
  border-radius: 12px;
  margin-bottom: 22px;
  padding: 22px 24px 18px 24px;
  box-shadow: 0 2px 8px rgba(19,113,239,0.04);
  transition: box-shadow 0.2s;
  position: relative;
}
.develist li:hover {
  box-shadow: 0 6px 24px rgba(19,113,239,0.10);
}
.sjjd {
  font-size: 22px;
  color: #1371ef;
  font-weight: bold;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.pbox p {
  color: #333;
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 6px 0;
}
.pbox p:last-child {
  margin-bottom: 0;
}

/* 右侧导航 */
.ztmains_r {
  width: 260px;
  min-width: 220px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(19,113,239,0.08);
  /* padding: 24px 0 24px 0; */
  text-align: center;
  box-sizing: border-box;
}
.aboutbg {
 width: 260px;
  margin-bottom: 18px;
  /* border-radius: 8px; */
}
.navbox{
    margin-top: -20px;
}
.navbox ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.navbox li {
  margin: 0 0 12px 0;
}
.navbox a {
  display: block;
  color: #1371ef;
  font-size: 17px;
  padding: 12px 0;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.navbox a.zton,
.navbox a:hover {
  background: #e3f3ff;
  color: #1371ef;
}
.navbox i.iconfont {
  margin-right: 6px;
  font-size: 18px;
  vertical-align: middle;
}

/* 面包屑优化 */
.bread_nav {
  background: #f4f8ff;
  padding: 12px 0;
  font-size: 15px;
  color: #666;
}
.bread_nav .inner {
  max-width: 1200px;
  margin: 0 auto;
}
.bread_nav a {
  color: #1371ef;
  text-decoration: none;
  margin: 0 4px;
}
.bread_nav .iconfont {
  color: #1371ef;
  margin: 0 2px;
}

/* 响应式适配 */
@media (max-width: 1000px) {
  .ztmains .inner {
    flex-direction: column;
    gap: 0;
  }
  .ztmains_l.develop_box,
  .ztmains_r {
    min-width: 0;
    width: 100%;
    margin-bottom: 24px;
    padding: 18px 8px;
  }
}
@media (max-width: 600px) {
  .ztmains {
    padding: 8px 0 16px 0;
  }
  .ztmains .inner {
    padding: 0 4px;
  }
  .tit {
    font-size: 18px;
  }
  .sjjd {
    font-size: 16px;
  }
  .pbox p {
    font-size: 13px;
  }
  .aboutbg {
    width: 48px;
  }
  .navbox a {
    font-size: 15px;
    padding: 8px 0;
  }
}