.sbcc-form{
  max-width:760px;
  margin:24px auto;
  padding:28px;
  background:#fff;
  border:1px solid #ddd;
  border-radius:12px;
  box-sizing:border-box;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
}
.sbcc-head{text-align:center;margin-bottom:24px}
.sbcc-head h2{font-size:28px;margin:0 0 8px}
.sbcc-head p{margin:0;color:#555}
.sbcc-field{margin-bottom:20px}
.sbcc-field label{display:block;font-weight:700;font-size:18px;margin-bottom:8px}
.sbcc-field label span,
.sbcc-group-title span,
.sbcc-birth-fieldset legend span{
  display:inline-block;
  font-size:12px;
  background:#222;
  color:#fff;
  padding:2px 7px;
  border-radius:3px;
  margin-left:6px;
  vertical-align:middle;
}
.sbcc-field input,
.sbcc-field textarea,
.sbcc-date-selects select{
  width:100%;
  font-size:20px;
  min-height:54px;
  padding:10px 12px;
  border:1px solid #aaa;
  border-radius:8px;
  box-sizing:border-box;
  background:#fff;
}
.sbcc-field textarea{resize:vertical}
.sbcc-field input:focus,
.sbcc-field textarea:focus,
.sbcc-date-selects select:focus{
  outline:2px solid rgba(0,0,0,.15);
  outline-offset:1px;
  border-color:#555;
}
.sbcc-field small{display:block;color:#666;margin-top:6px;font-size:13px}
.sbcc-submit{
  width:100%;
  min-height:60px;
  border:0;
  border-radius:8px;
  background:#111;
  color:#fff;
  font-size:22px;
  font-weight:700;
  cursor:pointer;
}
.sbcc-submit:hover{opacity:.92}
.sbcc-success,.sbcc-error{
  max-width:760px;
  margin:24px auto;
  padding:20px;
  border-radius:8px;
  text-align:center;
  font-size:18px;
}
.sbcc-success{background:#eef8f0;border:1px solid #78ae83}
.sbcc-error{background:#fff1f1;border:1px solid #cf7777}
.sbcc-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.sbcc-group{margin-bottom:6px}
.sbcc-group-title{font-weight:700;font-size:18px;margin-bottom:8px}
.sbcc-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}

.sbcc-loading{
  background-image:linear-gradient(90deg,transparent,rgba(0,0,0,.04),transparent);
  background-size:200% 100%;
  animation:sbccLoad 1s linear infinite;
}
@keyframes sbccLoad{from{background-position:200% 0}to{background-position:-200% 0}}

.sbcc-birth-fieldset{
  margin:0 0 20px;
  padding:0;
  border:0;
}
.sbcc-birth-fieldset legend{
  display:block;
  width:100%;
  font-weight:700;
  font-size:18px;
  margin:0 0 6px;
}
.sbcc-birth-note{
  margin:0 0 12px;
  color:#666;
  font-size:13px;
}
.sbcc-birth-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.sbcc-birth-card{
  border:1px solid #cfcfcf;
  border-radius:10px;
  padding:14px;
  background:#fafafa;
  transition:border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.sbcc-birth-card.is-active{
  border-color:#777;
  background:#fff;
  box-shadow:0 0 0 2px rgba(0,0,0,.04);
}
.sbcc-mode-label{
  display:grid;
  grid-template-columns:auto 1fr;
  column-gap:8px;
  row-gap:2px;
  align-items:center;
  cursor:pointer;
  margin-bottom:12px;
}
.sbcc-mode-label input{
  width:18px;
  height:18px;
  margin:0;
}
.sbcc-mode-label span{
  font-weight:700;
  font-size:15px;
}
.sbcc-mode-label small{
  grid-column:2;
  color:#666;
  font-size:12px;
}
.sbcc-date-selects{
  display:grid;
  gap:8px;
  margin-bottom:10px;
}
.sbcc-date-selects-wareki{
  grid-template-columns:1.25fr .95fr .8fr .8fr;
}
.sbcc-date-selects-seireki{
  grid-template-columns:1.3fr .9fr .9fr;
}
.sbcc-date-selects select{
  min-height:48px;
  font-size:16px;
  padding:8px;
}
.sbcc-date-selects select:disabled{
  background:#f1f1f1;
  color:#888;
}
.sbcc-convert-preview{
  min-height:20px;
  font-size:13px;
  line-height:1.5;
  color:#333;
  font-weight:600;
}
.sbcc-birth-card.is-active .sbcc-convert-preview{
  color:#111;
}
.sbcc-inline-error{
  display:none;
  margin-top:9px;
  padding:9px 12px;
  border-radius:6px;
  background:#fff1f1;
  color:#b00020;
  font-size:13px;
}
.sbcc-inline-error.is-visible{display:block}

@media(max-width:700px){
  .sbcc-form{margin:12px;padding:20px}
  .sbcc-head h2{font-size:26px}
  .sbcc-field input,
  .sbcc-field textarea{font-size:18px}
  .sbcc-grid-2{grid-template-columns:1fr 1fr;gap:10px}
  .sbcc-birth-grid{grid-template-columns:1fr}
}

@media(max-width:520px){
  .sbcc-grid-2{grid-template-columns:1fr}
  .sbcc-date-selects-wareki{grid-template-columns:1fr 1fr}
  .sbcc-date-selects-seireki{grid-template-columns:1fr 1fr 1fr}
}