.history {
  margin-bottom: 50px;
}

.history p {
  font-size: 1.8rem;
  line-height: 2;
}

@media (max-width: 768px) {
  .history p {
    font-size: 1.6rem;
    line-height: 1.75;
  }
}

.time-line-box {
  position: relative;
  margin-bottom: 50px;
}

.time-line-box .time-line {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  overflow-x: scroll;
  padding-bottom: 20px;
}

.time-line-box .time-line::-webkit-scrollbar {
  width: 8px;
  height: 6px;
}

.time-line-box .time-line::-webkit-scrollbar-track {
  border-radius: 10px;
  background-color: rgba(0,0,0,.2);
  /* box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3); */
}

.time-line-box .time-line::-webkit-scrollbar-thumb {
  background-color: rgba(0,0,0,.3);
  border-radius: 10px;
}

@media (max-width: 768px) {
  .time-line-box .time-line {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    overflow-x: unset;
    padding-bottom: 0;
  }
}

.time-line-box .time-item {
  width: 25%;
  min-width: 260px;
  -ms-flex-negative: 0;
      flex-shrink: 0;
  right: 0;
}

@media (max-width: 768px) {
  .time-line-box .time-item {
    width: 100%;
    min-width: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    position: relative;
  }
}

/* .time-line-box .time-item:last-child .time-item-line::after */
.time-line-box .time-item:nth-child(4) .time-item-line::after {
  position: absolute;
  content: "";
  display: block;
  width: 0;
  height: 0;
  right: -2px;
  border-style: solid;
  border-width: 10px 0 10px 20px;
  border-color: transparent transparent transparent #bfc3c7;
  margin-top: -9px;
}

@media (max-width: 768px) {
  .time-line-box .time-item:nth-child(4) .time-item-line::after{
    display: none;
  }
  .time-line-box .time-item:last-child .time-item-line::after {
    position: absolute;
    content: "";
    display: block;
    width: 0;
    height: 0;
    right: -2px;
    border-style: solid;
    border-color: transparent transparent transparent #bfc3c7;
    margin-top: -9px;
    border-width: 8px 0 8px 16px;
    -webkit-transform: rotate(90deg) translateX(0px) translateY(-5px);
            transform: rotate(90deg) translateX(0px) translateY(-5px);
  }
}

.time-line-box .time-item:last-child .con-list {
  border-bottom: none;
}

.time-line-box .time-item-tit {
  text-align: center;
  margin-bottom: 18px;
}

@media (max-width: 768px) {
  .time-line-box .time-item-tit {
    margin-bottom: 4px;
    text-align: left;
    padding-left: 40px;
  }
}

.time-line-box .time-item-tit p {
  display: inline-block;
  margin: auto;
  font-size: 1.8rem;
  padding: 2px 12px;
  background-color: #cfcfcf;
  border-radius: 4px;
  color: #000;
}

.time-line-box .time-item-line {
  border-bottom: 2px solid #bfc3c7;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .time-line-box .time-item-line {
    -webkit-box-ordinal-group: 2;
        -ms-flex-order: 1;
            order: 1;
    border-bottom: none;
    position: absolute;
    top: 0;
    bottom: 0;
    margin: 0;
  }
}

.time-line-box .time-item-line .dot {
  display: block;
  width: 14px;
  height: 14px;
  background-color: var(--three_bg_color);
  border-radius: 50%;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .time-line-box .time-item-line .dot {
    position: absolute;
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
    left: 0;
    top: 18px;
  }
}

@media (max-width: 768px) {
  .time-line-box .time-item-line .dot::after {
    content: "";
    width: 12px;
    height: 2px;
    background-color: #bfc3c7;
    position: absolute;
    left: 100%;
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
    top: 50%;
  }
}

.time-line-box .time-item-line .line {
  display: block;
  width: 2px;
  height: 7px;
  background-color: #bfc3c7;
  border-radius: 50%;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .time-line-box .time-item-line .line {
    display: inline-block;
    height: 100%;
    margin-left: 6px;
  }
}

.time-line-box .con-list {
  padding-left: 0;
  list-style: none;
  padding-right: 60px;
}

@media (max-width: 768px) {
  .time-line-box .con-list {
    padding-left: 40px;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px dashed #ccc;
  }
}

.time-line-box .con-item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-top: 16px;
  margin-bottom: 16px;
  line-height: 1.65;
}

@media (max-width: 768px) {
  .time-line-box .con-item {
    margin-top: 14px;
    margin-bottom: 14px;
  }
}

.time-line-box .item-icon {
  width: 24px;
  height: 24px;
  line-height: 24px;
  text-align: center;
  border-radius: 50%;
  padding: 0;
  -ms-flex-negative: 0;
      flex-shrink: 0;
  margin-right: 8px;
}