body {
  max-width: 1920px;
  margin: 0 auto;
  background-color: #EFF8FD;
}

/* 设置全局字体为 PingFang SC-Regular */
body,
.menu a,
.section {
  font-family: 'PingFang SC', sans-serif;
}

.mainhx {
  max-width: 1920px;
  margin: 0 auto;
  background-color: #fff;
}

.w1200 {
  width: 1200px;
  margin: 0 auto;
}

.iim {
  width: 100%;
}


/* 菜单样式 */
.menu {
  /* margin: 20px 0; */
  width: 100%;
  display: flex;
  justify-content: center;
  background-color: #1966A7;
  border-top: 6px solid #278FCB;
}

.menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: space-around;
  background-color: #1966A7;
  overflow: hidden;
}

.menu li {
  flex: 1;
  text-align: center;
}

.menu a {
  display: block;
  padding: 15px 0;
  text-decoration: none;
  color: #fff;
  font-size: 18px;
}

.menu a:hover,
.menu a.active {
  background-color: #278FCB;
}

/* 内容区块样式 */
.section {
  display: none;
  margin-top: 20px;
  padding: 30px;
  border-top: none;
}

.section.active {
  display: block;
}

/* box_hm 样式 */
.box_hm {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 40px;
}

.box_hm ul {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  /* 两个列表之间留点间距 */
}

.box_hm li {
  position: relative;
  padding-left: 20px;
  /* 为方块留出空间 */
  margin-bottom: 15px;
  font-size: 15px;
  color: #333;
}

.box_hm li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  /* 方块宽度 */
  height: 6px;
  /* 方块高度 */
  background-color: #DEDEDE;
  /* 方块颜色 */
}

#section8 .ccn {
  display: grid;
  grid-template-columns: 860px 1fr;
}

#section8 .box_hm {
  display: block;
  width: 96%;
}

.right {
  padding: 15px;
  background-color: #F6F9FB;
}

.info_top {
  display: flex;
  align-items: center;
}

.video_box {
  width: 100%;

}

.video_box img {
  width: 100%;
}

.nr a {
  display: block;
  margin-bottom: 55px;
}

.video_box p {
  font-weight: 400;
  font-size: 16px;
  color: #333333;
  margin-top: 30px;
  text-align: center;
}