:root {
  --c-bg:           #ffffff;
  --c-bg-sub:       #f8f7f5;
  --c-border:       #dddad5;
  --c-border-focus: #1a1a18;
  --c-text:         #1a1a18;
  --c-text-sub:     #6b6860;
  --c-text-hint:    #b8b5b0;
  --c-error:        #8b3a2a;
  --c-btn-off:      #c8c5c0;
  --c-btn-on:       #1a1a18;
  --font-display:   'Cormorant Garamond', serif;
  --font-body:      'Noto Sans JP', sans-serif;
  --transition:     0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
}

.page-wrapper {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 32px 100px;
}

.page-header { padding: 142px 0 52px; }

.header-title {
  color: #212121;
  font-family: 'proxima_nova',YuGothic, '游ゴシック',"ヒラギノ角ゴ Pro W3","Hiragino Kaku Gothic Pro","メイリオ", "Meiryo",sans-serif;
  text-transform: uppercase;
  font-size: clamp(40px, 7vw, 50px);
  font-weight: 450;
  letter-spacing: 2.5px;
  line-height: 1;
  display: block;
  margin-bottom: 30px;
  text-align: center;
}

.header-rule {
  width: 333px;
  height: 1px;
  background: var(--c-text);
  margin-bottom: 33px;
}

.header-desc {
  font-weight: 500;
  color: var(--c-text-sub);
  letter-spacing: 0.04em;
  line-height: 1.7;
}

.header-desc a {
  color: var(--c-text-sub);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-note {
  font-size: 12px;
  color: var(--c-text-sub);
  letter-spacing: 0.05em;
  margin-bottom: 40px;
}

.required-mark { color: var(--c-error); margin-right: 2px; }
.form-group { margin-bottom: 28px; }

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--c-text);
  margin-bottom: 8px;
}

.required-badge {
  font-size: 10px;
  color: var(--c-error);
  border: 1px solid var(--c-error);
  padding: 1px 5px;
  letter-spacing: 0.05em;
  line-height: 1.5;
}

.form-input,
.form-textarea {
  width: 100%;
  background: var(--c-bg-sub);
  border: 1px solid var(--c-border);
  border-radius: 0;
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  color: var(--c-text);
  letter-spacing: 0.04em;
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--c-text-hint); }

.form-input:focus,
.form-textarea:focus {
  border-color: var(--c-border-focus);
  background: #fff;
}

.form-input.is-error,
.form-textarea.is-error {
  border-color: var(--c-error);
  background: #fdf8f7;
}

.form-textarea { min-height: 130px; resize: vertical; line-height: 1.8; }

.char-count {
  display: block;
  text-align: right;
  font-size: 11px;
  color: var(--c-text-hint);
  letter-spacing: 0.05em;
  margin-top: 5px;
}

.form-error {
  display: block;
  font-size: 11px;
  color: var(--c-error);
  letter-spacing: 0.04em;
  margin-top: 6px;
  min-height: 16px;
}

.radio-group { display: flex; flex-direction: column; gap: 2px; }

.radio-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  background: var(--c-bg-sub);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  user-select: none;
}

.radio-item:hover { background: #f0ede8; }

.radio-item.is-selected {
  background: #fff;
  border-color: var(--c-border-focus);
}

.radio-input { display: none; }

.radio-custom {
  width: 15px;
  height: 15px;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--transition);
  background: #fff;
}

.radio-item.is-selected .radio-custom { border-color: var(--c-text); }

.radio-input:checked + .radio-custom::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--c-text);
  border-radius: 50%;
}

.radio-label-text {
  font-weight: 500;
  color: var(--c-text-sub);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.radio-item.is-selected .radio-label-text {
  color: var(--c-text);
  font-weight: 400;
}

.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] { display: none; }

.checkbox-custom {
  width: 16px;
  height: 16px;
  border: 1px solid var(--c-border);
  background: var(--c-bg-sub);
  flex-shrink: 0;
  position: relative;
  margin-top: 3px;
  transition: border-color var(--transition), background var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--c-text);
  border-color: var(--c-text);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 1.5px solid #fff;
  border-bottom: 1.5px solid #fff;
  transform: rotate(40deg);
}

.checkbox-text {
  color: var(--c-text-sub);
  letter-spacing: 0.04em;
  line-height: 1.9;
}

.text-link {
  color: var(--c-text-sub);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-submit { margin-top: 40px; }

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--c-btn-off);
  color: #fff;
  border: none;
  padding: 15px 36px;
  font-weight: 300;
  letter-spacing: 0.15em;
  cursor: not-allowed;
  transition: background var(--transition), opacity var(--transition);
  min-width: 180px;
  width: 100%;	
}

.btn-submit.is-active {
  background: var(--c-btn-on);
  cursor: pointer;
}

.btn-submit.is-active:hover { opacity: 0.75; }

.btn-arrow {
  font-size: 14px;
  letter-spacing: 0;
  transition: transform var(--transition);
}

.btn-submit.is-active:hover .btn-arrow { transform: translateX(4px); }

.success-overlay {
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.success-box { text-align: center; padding: 48px 32px; max-width: 400px; }

.success-title {
  font-size: 36px;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.success-text {
  color: var(--c-text-sub);
  line-height: 2.2;
  letter-spacing: 0.05em;
  margin-bottom: 36px;
}

.btn-back {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--c-text-sub);
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 4px;
  text-decoration: none;
  transition: color var(--transition);
}

.btn-back:hover { color: var(--c-text); }

@media (max-width: 480px) {
  .page-wrapper { padding: 0 20px 80px; }
  .page-header { padding: 82px 0 40px; }
  .btn-submit { width: 100%; }
  .form-submit { justify-content: stretch; }
}