.m-sub-nav {
  padding: 17px;
}
.m-sub-nav .msn-title strong {
  display: block;
  font-size: 18px;
  color: #d7000f;
}
.m-sub-nav .msn-title span {
  font-size: 12px;
  color: #595757;
}
.m-sub-nav .msn-tab {
  padding-bottom: 10px;
  margin-top: 20px;
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  width: 100%;
}
.m-sub-nav .msn-tab a {
  margin-bottom: 6px;
  display: block;
  width: 24%;
  height: 31px;
  line-height: 31px;
  font-size: 14px;
  color: #fff;
  text-align: center;
  background-color: #a0a0a0;
}
.m-sub-nav .msn-tab a.on {
  background-color: #d7000f;
}
.about-index {
  padding: 0 5% 120px 5%;
}
.about-index img {
  display: block;
  margin: 30px auto 0 auto;
}
.about-index .sub-title {
  margin-top: 40px;
  text-align: center;
}
.about-index .sub-title span {
  position: relative;
  font-size: 40px;
}
.about-index .sub-title span:after {
  content: " ";
  position: absolute;
  bottom: -15px;
  left: 50%;
  margin-left: -16px;
  width: 32px;
  height: 4px;
  background-color: #d7000f;
}
.about-index h2 {
  margin: 70px auto 0 auto;
  font-size: 30px;
}
.about-index h3 {
  margin-top: 50px;
  font-size: 24px;
  color: #898989;
  text-align: center;
}
.about-index h4 {
  margin-top: 30px;
  font-size: 24px;
  font-weight: normal;
  line-height: 36px;
}
.about-index p {
  margin: 22px auto 0 auto;
  max-width: 1050px;
  font-size: 18px;
  line-height: 32px;
  text-indent: 2em;
}
.about-index em {
  display: block;
  margin-top: 5px;
  font-size: 18px;
  color: #595757;
}
.sub-title-2 {
  margin-top: 30px;
  text-align: center;
}
.sub-title-2 span {
  display: inline-block;
  margin-left: 4px;
  width: 30px;
  height: 30px;
  line-height: 30px;
  color: #fff;
  font-size: 18px;
  background-color: #d7000f;
  border-radius: 50%;
}
.sub-title-2 span:first-child {
  margin-left: 0;
}