body {
  position: relative;

  /* 背景画像上下引き伸ばし */
  background-image: url('../images/signup_bg.png');
  background-position: center top;
  background-repeat: no-repeat;
  -moz-background-size: cover;
  background-size: cover;
  min-height: 100vh;

  /* footerの高さ考慮 */
  padding-bottom: 40px;
}

main {
  padding-top: 100px;
}
@media screen and (max-width: 499px) {
  main {
    padding-top: 15vw;
  }
}

.main_inner {
  text-align: center;
}

/**
 * 見出し
 **/
.main_inner h1 {
  font-size: 7.583rem;
  color: #7cc4fa;
  margin-bottom: 20px;
}
@media screen and (max-width: 767px) {
  .main_inner h1 {
    font-size: 10.92vw;
    margin-bottom: 1rem;
  }
}

.main_inner h2 {
  font-size: 5rem;
}
.main_inner h3{
  font-size: 3rem;
}
.main_inner h4{
  font-size: 2rem;
}

.main_inner .caution_text {
  font-size: 1.4rem;
  letter-spacing: 0.1rem;
}

.main_inner .company_text {
  font-size: 1.4rem;
  letter-spacing: 0.1rem;
}

.main_inner .caution_legal {
  text-align: left;
  width: 50%;
  font-size: 1.4rem;
  letter-spacing: 0.1rem;
}
@media screen and (max-width: 767px) {
  .main_inner .caution_legal {
    width: 90%;
  }
}

@media screen and (max-width: 499px) {
  .main_inner .caution_text {
    font-size: 2.86vw;
  }
}

.main_inner .form_wrap {
  max-width: 100%;
  width: 570px;
  padding: 50px 0 50px;
  margin: 0 auto;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap {
    width: 85vw;
    padding: 10px 0 10px;
  }
}

.main_inner .form_wrap .form_item {
  padding: 6px 0;
  font-size: 1.4rem;
  letter-spacing: 0.1rem;
  text-align: left;
  flex-wrap: wrap;
}

@media screen and (min-width: 768px) {
  .main_inner .form_wrap .form_item {
    display: flex;
    justify-content: space-between;
  }
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item {
    padding: 3px 0;
  }
}

@media screen and (max-width: 499px) {
  .main_inner .form_wrap .form_item {
    font-size: 3.12vw;
  }
}

.main_inner .form_wrap .form_item .input_wrap {
  width: 70%;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item .input_wrap {
    width: auto;
  }
}

.main_inner .form_wrap .form_item .password_wrap {
  width: 60%;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item .password_wrap {
    width: auto;
  }
}

.main_inner .form_wrap .form_item .email_wrap {
  width: 60%;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item .email_wrap {
    width: auto;
  }
}

.main_inner .form_wrap .form_item .readonly {
  width: 100%;
  /* background-color: rgba(255, 255, 255, 0.1); */
  appearance: none;
  vertical-align: middle;
  height: 45px;
  border-radius: 7px;
  padding: 10px 15px;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item .readonly {
    width: 100%;
    height: 40px;
  }
}

.main_inner .form_wrap .form_item .input {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.1);
  appearance: none;
  height: 45px;
  border-radius: 7px;
  padding: 10px 15px;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item .input {
    width: 100%;
    height: 40px;
  }
}

@media screen and (min-width: 768px) {
  .main_inner .form_wrap .form_item label {
    flex: 1;
    line-height: 50px;
  }
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_item label {
    display: block;
    margin-bottom: 0.8rem;
  }
}

.main_inner .form_wrap .form_item .error {
  color: red;
  width: 100%;
  margin-top: 5px;
}

.main_inner .form_wrap hr {
  margin: 5px 0;
  color: #333333;
}

.main_inner .form_wrap .form_privacy {
  font-size: 1.4rem;
  margin-top: 40px;
  letter-spacing: 0.1rem;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_privacy {
    margin-top: 1rem;
  }
}

@media screen and (max-width: 499px) {
  .main_inner .form_wrap .form_privacy {
    margin-bottom: 0.5rem;
    font-size: 3.276vw;
  }
}

.main_inner .form_wrap .form_privacy p {
  margin-bottom: 20px;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_privacy p {
    margin-bottom: 1rem;
  }
}

.main_inner .form_wrap .form_privacy a {
  display: inline-block;
  color: #7cc4fa;
  transition: all 0.3s;
}

.main_inner .form_wrap .form_privacy a:hover {
  text-shadow: 0 0 4px #7cc4fa;
}

.main_inner .form_wrap .form_privacy label[for=privacy] {
  display: block;
  width: 18px;
  height: 18px;
  display: inline-block;
  border: solid 2px #7cc4fa;
  position: relative;
  transition: all 0.3s;
  margin-bottom: 60px;
}

.main_inner .form_wrap .form_privacy label[for=privacy]:hover {
  box-shadow: 0 0 4px #7cc4fa;
}

@media screen and (max-width: 767px) {
  .main_inner .form_wrap .form_privacy label[for=privacy] {
    margin-bottom: 2.5rem;
  }
}

.main_inner .form_wrap .form_privacy input#privacy {
  display: none;
}

.main_inner .form_wrap .form_privacy input#privacy:checked + label {
  box-shadow: 0 0 4px #7cc4fa;
}

.main_inner .form_wrap .form_privacy input#privacy:checked + label:before {
  content: "";
  position: absolute;
  top: 40%;
  left: 50%;
  height: 10px;
  width: 6px;
  transform: translate(-50%, -50%) rotate(45deg);
  border-right: solid 2px #7cc4fa;
  border-bottom: solid 2px #7cc4fa;
  filter: drop-shadow(0px 0px 4px #7cc4fa);
}

.invalid-feedback {
  width: 100%;
  margin-top: 0.25rem;
  font-size: 0.875em;
  color: #e3342f;
}

.main_inner .form_wrap .red {
  font-size: 0.875em;
  color: #e3342f;
}