.rp-extlink {
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:#2F6FB3;
  color:#fff!important;
  font-weight:700;
  font-size:15px;
  text-decoration:none;
  border-radius:12px;
  padding:13px 22px;
  margin-top:8px;
  transition:background .18s
}
.rp-extlink:hover {
  background:#1E3A6D
}
.rp-extlink svg {
  width:17px;
  height:17px
}
.rp-extlink-note {
  font-size:13px;
  color:#5E6F84;
  margin:14px 0 4px
}
.rp-formula {
  margin-top:8px;
  border:1px solid #E7EDF4;
  border-radius:14px;
  background:#fff;
  padding:16px;
  text-align:center
}
.rp-formula img {
  max-width:100%;
  height:auto;
  display:block;
  margin:0 auto
}
.filebtn {
  display:flex;
  align-items:center;
  gap:9px;
  padding:12px 14px;
  border:1.5px dashed #C9D6E5;
  border-radius:10px;
  background:#F7FAFC;
  color:#5E6F84;
  font-size:14px;
  cursor:pointer;
  transition:border-color .15s,background .15s,color .15s;
  box-sizing:border-box
}
.filebtn:hover {
  border-color:#2F6FB3;
  color:#2F6FB3;
  background:#fff
}
.filebtn input {
  display:none
}
.filebtn .fbi {
  flex:0 0 auto
}
.filebtn .fbt {
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap
}
.filebtn.has {
  border-style:solid;
  border-color:#2F6FB3;
  color:#2F6FB3;
  background:#fff;
  font-weight:600
}