/* =======================================================
* sub_main
* ======================================================= */
#sub_main {
  background: url(../images/bg-contact.jpg) no-repeat center/cover;
}

/*================================================
 * contact
 ================================================*/
#contact {
  background: linear-gradient(0deg, rgba(255, 255, 255, 1) 30%, rgb(227 227 227 / 30%) 100%);
  overflow-x: hidden;
}

#contact::before {
  position: absolute;
  content: "";
  width: 500px;
  height: 500px;
  border: 1px solid #ddd;
  border-radius: 50%;
  top: -140px;
  right: -140px;
}

form {
  max-width: 700px;
  margin: 50px auto 0;
}

label {
  display: block;
  margin: 35px auto 10px;
}

label small {
  font-size: 11px;
}

input,
select {
  vertical-align: text-top;
  font-size: 30px;
  margin: 3px;
}

input[type="email"],
input[type="number"],
input[type="text"],
input[type="tel"],
input[type="zipcode"],
input[type="date"],
input[type="city"],
input[type="address"],
select,
textarea {
  width: 100%;
  display: block;
  border: 1px solid #c7c4b5;
  outline: none;
  height: 5.5rem;
  line-height: 1.8;
  background: #fff;
  font-size: 1.5rem;
  padding-left: 10px;
  border-radius: 5px;
  box-sizing: border-box;
  font-family: "Noto Serif JP", 游明朝, "Yu Mincho", YuMincho, "Hiragino Mincho ProN", HGS明朝E, メイリオ, Meiryo, serif;
}

textarea {
  height: 300px;
  padding: 10px;
}

/* radioBtn */
.radioBtn {
  position: relative;
  cursor: pointer;
  padding-left: 25px;
  display: block;
  font-weight: normal;
  margin: 10px 0;
}

.radioBtn::before,
.radioBtn::after {
  content: "";
  display: block;
  border-radius: 50%;
  position: absolute;
  transform: translateY(-50%);
  top: 50%;
}

.radioBtn::before {
  background-color: #fff;
  border: 1px solid #555;
  border-radius: 50%;
  width: 15px;
  height: 15px;
  left: 5px;
}

.radioBtn::after {
  background-color: var(--color-black);
  border-radius: 50%;
  opacity: 0;
  width: 11px;
  height: 11px;
  left: 7px;
}

input:checked+.radioBtn::after {
  opacity: 1;
}

.checkbox {
  position: absolute;
  white-space: nowrap;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  height: 1px;
  width: 1px;
  margin: -1px;
  padding: 0;
}

form sup {
  background-color: #e65a5a;
  color: #fff;
  font-size: 1rem;
  margin-left: 4px;
  padding: 1px 5px;
  border-radius: 5px;
  vertical-align: super;
}

form sup.any {
  background-color: #959796;
}

/* button */
form button {
  width: 260px;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  min-height: 55px;
  margin: 0 auto;
  border-radius: 30px;
  border: 1px solid var(--color-gray);
  background: var(--color-gray);
  color: var(--color-white);
  position: relative;
  transition: 0.3s;
  font-family: "Noto Serif JP", 游明朝, "Yu Mincho", YuMincho, "Hiragino Mincho ProN", HGS明朝E, メイリオ, Meiryo, serif;
}

form button:hover {
  background: var(--color-white);
  color: var(--color-gray);
}


@media screen and (max-width:900px) {
  #contact::before {
    width: 300px;
    height: 300px;
    top: -80px;
    right: -110px;
  }

  form {
    margin: 50px auto 50px;
  }

  .radioBtn {
    display: block;
    margin-right: 0;
    margin: 10px;
  }
}