html {
  font-size: calc(100vw / 1920);
  font-family: PingFangSC-Medium, PingFang SC
}

/* 宽度小于960判断为手机 */
@media screen and (max-width:960px) {
  html {
    font-size: calc(100vw / 750)
  }
}

body {
  padding: 0;
  margin: 0;
}

.agreement {
  text-align: justify;
  line-height: 42rem;
  font-size: 28rem;
  padding: 24rem 40rem;
  box-sizing: border-box;
}

.link_text {
  color: #31A4E2;
  text-decoration: underline;
  cursor: pointer;
}

.fir_title {
  font-size: 36rem;
  text-align: center;
  font-weight: bold;
  padding-top: 20px;
  margin-bottom: 24rem;
}

.sec_title {
  color: #333;
  font-size: 30rem;
  font-weight: bold;
  margin-top: 24rem;
}

.thr_title {
  color: #333;
  font-size: 28rem;
  font-weight: bold;
  margin-top: 24rem;
}

.date {
  text-align: right;
  font-size: 24rem;
  line-height: 30rem;
  color: #aaa;
}

.section {
  color: #333;
  margin-top: 24rem;
  font-size: 28rem;
  word-break: break-all;
}

.key_point {
  font-weight: bold;
  text-decoration: underline;
}