.auth {
  position: relative;
  width:510px;
  margin: 100px auto 0;
}
.auth .login-frm-box + .login-frm-box {
    position:relative;
  margin-top: 10px;
}
.auth .login-frm-box .frm-input {
  width: 100%;
  height: 50px;
  font-size: 16px;
  color:var(--text-basic-color);
}
.auth__title {
  text-align: center;
}
.auth__title span {
  display: block;
  font-size: 30px;
  margin-top: 10px;
}
.auth .auth-frm {
  display: block;
  position: relative;
  margin-top: 30px;
}
.auth .login-info {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin: 20px 0;
}
.auth .login-info a {
  font-size: 16px;
  color:var(--text-bascie-color);
}

.auth .btn-box .b-btn {
    width: 100%;
    height: 50px;
    line-height: 50px;
}
.auth .btn-box--mt10 {
  margin-top: 10px;
}
.auth .btn-box--mt30 {
  margin-top: 30px;
}
.auth .fregister-chall {
  position: relative;
  padding: 30px;
  background-color: var(--color-surface-secondary-subtler);
  border: 1px solid var(--border-light-color);
  margin-bottom: 30px;
  color:var(--text-bascie-color);
}
.auth .fregister_term {
  position: relative;
  margin-bottom: 30px;
}
.auth .fregister-scrollbox {
  width: 100%;
  height: 150px;
  overflow: hidden;
  overflow-y: auto;
  background-color:var(--color-textbox);
  border: 1px solid var(--border-light-color);
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 10px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-sub-color);
}
.auth .form-noti {
    padding: 20px;
    border-radius: 10px;
    background-color: var(--color-surface-secondary-subtler);
    border: 1px solid var(--border-light-color);
    font-size: 18px;
    margin-bottom: 30px;
}
.auth .form-noti.mt-20 {
    margin-top:20px;
}
.auth .form-items {
  position: relative;
}
.auth .form-item {
  display: flex;
  flex-direction: row;
  flex-wrap:wrap;
  width: 100%;
  min-height: 50px;
  background-color:var(--text-bascie-color);
  border: 1px solid var(--border-light-color);
  padding: 6px 15px 6px;
  align-items:flex-start;
}
.auth .form-item .form-hint {
    position: relative;
    width:100%;
    margin-left: 99px;
}
.auth .form-item + .form-item {
  margin-top: -1px;
}
.auth .form-item__head {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: baseline;
  width: 100px;
  min-height: 50px;
  font-weight: 700;
  font-size: 15px;
  color:var(--text-bascie-color);
}
.auth .form-item__body {
    position:relative;
    width: calc(100% - 100px);
    font-size: 15px;
    color:var(--text-bascie-color);
}
.auth .form-item__body__text {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: baseline;
  width: 100%;
  min-height: 50px;
}
.auth .form-item__body__text--row {
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
}
.auth .form-item--no-flex {
  display: block;
}
.auth .form-item--no-flex .form-item__head {
  width: 100%;
  min-height: auto;
  margin-top:16px;
}
.auth .form-item--no-flex .form-item__body {
  width: 100%;
  margin-top:16px;
  margin-bottom:16px;
}
.auth .form-item:first-of-type {
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
}
.auth .form-item:last-of-type {
  border-bottom-right-radius: 5px;
  border-bottom-left-radius: 5px;
}
.auth .form-item .frm-input {
  height:50px;
  line-height:50px;
}
.auth .form-item .frm-input--full {
  width: 100%;
}
.auth .form-item #msg_mb_nick,
.auth .form-item #msg_mb_id {
  width: 100%;
  font-size: 14px;
}
.auth .form-item #msg_mb_nick span,
.auth .form-item #msg_mb_id span {
  display: block;
  width: 100%;
}
.auth .form-item .b-btn--ml10 {
  margin-left: 1rem;
}
.auth .form-item .b-btn--telmod {
  margin-left: 1rem;
}

.join-authentication {
  position: relative;
  margin-top: 30px;
  padding: 42px 30px;
  text-align: center;
  background-color:var(--color-textbox);
  border:1px solid var(--border-light-color);
}
.join-authentication dl {
  margin-top: 20px;
}
.join-authentication dl dt {
  font-size: 30px;
  color:var(--text-bascie-color);
  font-weight: 300;
  line-height: 1;
}
.join-authentication dl dd {
  margin-top: 15px;
  color: #a5a5a5;
}
.join-authentication .btn-box {
  margin-top: 30px;
  text-align: center;
}
.join-authentication .btn-box .b-btn {
  width: 100%;
  max-width: 500px;
  height: 50px;
  line-height: 50px;
  font-size: 18px;
}
.join-authentication__image {
  text-align: center;
}
.join-authentication__image span {
  font-size: 100px;
  font-weight: 300;
}

.auth__logo {
  display: block;
  margin: 0 auto;
}
.auth__logo__dark {
  display: none;
}
[data-theme="dark"]  {
  .auth__logo {
    display: none;
  }
  .auth__logo__dark {
    display: block;
    margin: 0 auto;
  }
}

.auth__btn-box {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
    margin-top:30px;
}
.auth__btn-box .b-btn {
  height: 50px;
  font-size: 16px;
  line-height: 50px;
}

.msg_mb_phone {
    position:relative;
    margin-top:5px;
}
#msg_mb_phone {
    position:relative;
    margin-top:5px;
}
#msg_mb_phone span {
    display:block;
    position:absolute;
    top:25px;
    right:10px;
    transform:translateY(-50%);
    font-size:15px;
    color:var(--color-2-border-danger);
}
#msg_mb_phone .b-btn {
    display:block;
    width:100%;
    margin-top:5px;
}
.reg_mb_phone_box {
    position:relative;
}
.reg_mb_phone_box #btn_mb_phone_cert {
    position:absolute;
    top:50%;
    right:10px;
    transform:translateY(-50%);
}