.flex {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.content {
  position: relative;
}
.content>section { 
  padding-bottom: 60px;
}
.content section header {
  font-size: 36px;
  color: #333;
  padding: 60px 0;
  text-align: center;
}
.content section article {
  padding: 0 18.75%;
}
.item-title {
  font-size: 18px;
  font-weight: bold;
  text-align: center;
}
.item-des {
  font-size: 16px;
  line-height: 24px;
}

/* banner */
.banner img {
  width: 100%;
}
.banner .title {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  text-align: center;
  box-sizing: border-box;
  padding: 0 10px;
}
.banner .title .h2 {
  font-size: 42px;
  font-weight: bold;
  color: #C0182F;
  line-height: 55px;
  margin-bottom: 20px;
}
.banner .title p { 
  color: #B0B0B0;
  font-size: 24px;
  line-height: 44px;
}

.content-bjtz, .content-fanr {
  background: #FFF;
}

.b-item {
  text-align: center;
  width: 25%;
  padding: 0 20px;
  box-sizing: border-box;
}
.b-item .item-icon img {
  width: 42px;
}
.b-item .item-title {
  margin: 20px 0;
}
/* 方案内容 */
.f-item {
  width: 32.2%;
  margin-bottom: 20px;
}
.f-item:nth-of-type(2) {
  margin: 0 1%;
}
.f-item .item-main {
  width: 100%;
  background-color: #F7F7F7;
  height: 380px;
  padding: 20px;
  box-sizing: border-box;
  border-radius: 5px;
}
.f-item .item-title,.j-item .item-title {
  margin-bottom: 12px;
}
.item-main ul {
  color: #666666;
  line-height: 30px;
}

.item-main .key {
  font-weight: bold;
}
.f-item .item-yl{
  height: 170px;
  margin-bottom: 10px;
}
.f-item .item-gl{
  height: 200px;
}

/* 具体 */
.j-item {
  width: 32.66%;
  padding: 20px;
  box-sizing: border-box;
  background: #FFF;
  border-radius: 5px;
}
.j-item:nth-of-type(2) {
  margin: 0 1%;
}
.j-item p { 
  line-height: 28px;
}

@media screen and (max-width: 1800px) {
  .item-main ul {
    line-height: 24px;
  }
}
@media screen and (max-width: 1600px) {  
  .banner .title .h2 {
    font-size: 30px;
  }
  .banner .title p {
    font-size: 20px;
    line-height: 40px;
  }
}
@media screen and (max-width: 1175px) {
  .content section article {
    padding: 0 10%;
  }
  .banner .title p {
    font-size: 20px;
    line-height: 36px;
  }
  .f-item{
    width: 100%;
    margin: 0;
    margin-bottom: 20px;    
  }
  .f-item:nth-of-type(2) {
    margin: 0 0 20px 0;
  }
  .f-item .item-main {
    height: auto;
    padding-bottom: 32px;
    line-height: 30px;
  }
  .f-item:nth-of-type(3) {
    display: flex;
    justify-content: flex-start;
  }
  .f-item .item-yl{
    width: 49%;
    margin-bottom: 0;
    margin-right: 15px;
  }
  .f-item .item-gl{
    width: 49%;
  }
}

@media screen and (max-width: 860px) {
  .banner .title .h2 {
    font-size: 26px;
    margin-bottom: 8px;
  }
  .banner .title p {
    font-size: 1rem;
    line-height: 1.1rem;
  }
}
@media screen and (max-width: 720px) {
  .content section article {
    padding: 0 20px;
  }
  .banner .title .h2 {
    font-size: 22px;
    line-height: 1.5;
    margin-bottom: 10px;
  }
  .banner .title p {
    font-size: 15px;
    line-height: 1.5;
  }
  .b-item {
    width: 50%;
    margin-bottom: 20px;
  }
  .j-item {
    width: 100%;
    margin-bottom: 20px;
  }
  .j-item:nth-of-type(2) {
    margin: 0 0 20px 0;
  }
}
@media screen and (max-width: 460px) {
  .content section article {
    padding: 0 5px;
  }
  .content section header {
    font-size: 15px;
    font-weight: 600;
    padding: 20px 0;
  }
  .item-title {
    font-size: 12px;
  }
  .item-des {
    font-size: 10px;
  }
  .banner .title .h2 {
    font-size: 16px;
    line-height: 17px;
    margin-bottom: 5px;
    font-weight: 600;
  }
  .banner .title p {
    font-size: 0.62rem;
    line-height: 1.2rem;
  }
}