.m-box-left {
  float: left;
  width: 156px;
  min-height: 588px;
  margin-right: 4px;
  padding-top: 18px;
  padding-left: 20px;
  box-sizing: border-box;
  background: #fff;
}

.m-box-left span {
  font-size: 12px;
  font-weight: 400;
  color: #b8b8b8;
}

.m-box-left li {
  display: block;
  position: relative;
  padding-top: 15px;
  padding-bottom: 15px;
}

.m-box-left li a {
  display: block;
  position: relative;
  font-size: 16px;
  font-weight: 500;
  color: #808080;
}

.m-box-left li a:hover {
  color: #54C7B3;
}

.m-box-left li a i {
  display: block;
  position: absolute;
  top: 4px;
  right: 42px;
  width: 16px;
  height: 16px;
  background: url(../images/icon-next.png) no-repeat center;
}

.m-box-left li.on a i {
  background-image: url(../images/icon-xia.png);
}

.m-box-left li .second-item {
  display: none;
  padding-left: 15px;
  font-weight: 400;
}

.m-box-left li .second-item a {
  display: block;
  padding-top: 15px;
  font-size: 14px;
}

.m-box-left li.on>a {
  color: #54C7B3;
}

.m-box-left li.on .second-item {
  display: block;
}

.m-box-left li.on .second-item a.cur {
  color: #54C7B3;
}

.m-box-middle {
  float: left;
  width: 1040px;
  margin-bottom: 30px;
  box-sizing: border-box;
}

.m-box-middle .hd-title {
  height: 88px;
  margin-bottom: 4px;
  padding: 15px 30px;
  box-sizing: border-box;
  background: #fff;
}

.m-box-middle .hd-title .change-box {
  float: right;
}

.m-box-middle .hd-title .change-box span {
  display: inline-block;
  width: 18px;
  height: 18px;
  margin-left: 13px;
  vertical-align: middle;
  cursor: pointer;
  background-size: 100%;
}

.m-box-middle .hd-title .change-box span.lump {
  background: url(../images/icon-lb1.png) no-repeat center;
}

.m-box-middle .hd-title .change-box span.lump.on {
  background: url(../images/icon-lb1_h.png) no-repeat center;
}

.m-box-middle .hd-title .change-box span.line {
  background: url(../images/icon-lb2.png) no-repeat center;
}

.m-box-middle .hd-title .change-box span.line.on {
  background: url(../images/icon-lb2_h.png) no-repeat center;
}

.m-box-middle .content {
  min-height: 1231px;
  background: #fff;
}

.m-box-middle ul.m-list-box {
  padding-left: 42px;
}

.m-box-middle .m-list-box li:nth-child(4n) {
  margin-right: 0;
}


.m-box-middle .m-list-box li:nth-child(5n) {
  margin-right: 25px;
}

.m-box-middle.width720 {
  width: 720px;
}


.m-box-middle.width720 ul.m-list-box_line {
  margin-top: 0px;
  padding-right: 42px;
  padding-left: 42px;
}

.m-box-right {
  float: right;
  position: relative;
}
.m-list-box_line li .detail {
  top: 40px;
}