body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.cnt-bnr {
  background: linear-gradient(to right, #1a36b3, #1070e9);
  color: #fff;
  padding: 90px 0;
  text-align: center;
}
.cnt-bnr h1 {
  font-size: 4.6rem;
}

/* 表单 */
.cnt-form {
  padding: 80px 0;
  flex: 1;
}

.cnt-form .row:not(:last-child) {
  margin-bottom: 30px;
}
.cnt-form .row .row-mn {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.cnt-form label {
  font-size: 24px;
  color: #2f2f2f;
  width: 32.9%;
  padding-right: 25px;
  text-align: right;
}
.cnt-form input[type="text"] {
  display: block;
  width: 53.7%;
  border: 1px solid rgba(24, 62, 186, 1);
  border-radius: 6px;
  outline: none;
  padding: 0 0 0 8px;
  height: 48px;
}
.cnt-form .btn.btn-submit {
  width: 309px;
  height: 60px;
  line-height: 60px;
  border-radius: 6px;
  background-color: #183eba;
}
.cnt-form .btn.btn-submit:hover {
  background-color: #042fbb;
}
.cnt-form input.verif {
  width: 25.75%;
  max-width: 309px;
  margin-right: 28px;
}
.verif-img {
  width: 125px;
  height: 48px;
  border: 1px solid #ccc;
}
.cnt-form input::placeholder {
  color: #abb1b7;
  font-size: 16px;
}
.cnt-form input::placeholder,
.cnt-form input::-webkit-input-placeholder,
.cnt-form input:-moz-placeholder,
.cnt-form input:-ms-input-placeholder {
  color: #abb1b7;
  font-size: 18px;
  font-weight: normal;
}
.cnt-form .row .incorrect {
  color: #fc2e2a;
  margin-left: 32.9%;
  display: none;
}

.getOfflineSerialNumberBox .incorrect {
  text-indent: 0;
  background-color: #fc2e2a;
  color: #fff;
  padding: 10px;
  font-size: 18px;
  max-width: 930px;
  margin: 30px auto 0 auto;
  display: none;
}
.getOfflineSerialNumberBox .incorrect span {
  word-break: break-all;
}
@media all and (max-width: 767px) {
  .cnt-form .row .row-mn {
    flex-wrap: wrap;
    justify-content: center;
  }
  .cnt-form label {
    width: 100%;
    text-align: left;
  }
  .cnt-form input[type="text"] {
    width: 100%;
  }
  .cnt-form input.verif {
    width: calc(100% - 153px);
  }
  .cnt-form .row .incorrect {
    margin: 0;
    text-align: left;
  }
}
.g-cnt {
  max-width: 1200px;
  margin: 0 auto;
}
.row {
  display: block;
}
.btn {
  background: none;
  font-size: 2rem;
  color: rgb(255, 255, 255);
  text-align: center;
  padding: 0px 15px;
  border-radius: 4px;
  border-width: 1px;
  border-style: solid;
  border-color: transparent;
}
@media all and (max-width: 1200px) {
  .g-cnt {
    margin: 0 15px;
  }
}