:root{
  --form-orange: #f5a623;
  --form-orange-mid: #e0951a;
  --form-orange-deep: #d97d00;
  --form-ink: #1b1b1b;
  --form-muted: #6b7280;
  --form-placeholder: #9ca3af;
  --form-input-bg: #f0f2f5;
}

*,
*::before,
*::after{
  box-sizing: border-box;
}

body{
  margin: 0;
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: #fff;
  color: var(--form-ink);
  min-height: 100vh;
  padding: 48px 20px 72px;
  line-height: 1.5;
}

.formPage{
  max-width: 640px;
  margin: 0 auto;
}

.formTitle{
  margin: 0 0 20px;
  text-align: center;
  font-size: clamp(28px, 5.2vw, 38px);
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--form-orange);
}

.formLead{
  margin: 0 0 44px;
  text-align: center;
  font-size: 15px;
  line-height: 1.85;
  font-weight: 500;
  color: var(--form-ink);
}

.formFields{
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.formField{
  margin: 0;
}

.formLabelRow{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 10px;
}

.formLabelRow label{
  font-size: 15px;
  font-weight: 700;
  color: var(--form-ink);
}

.formRequired{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 11px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .06em;
  color: #fff;
  background: var(--form-orange);
  border-radius: 6px;
  line-height: 1;
}

.formInput,
.formTextarea{
  display: block;
  width: 100%;
  margin: 0;
  padding: 15px 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--form-ink);
  background: var(--form-input-bg);
  border: none;
  border-radius: 10px;
  outline: none;
  transition: box-shadow .2s ease;
}

.formInput::placeholder,
.formTextarea::placeholder{
  color: var(--form-placeholder);
}

.formInput:focus,
.formTextarea:focus{
  box-shadow: 0 0 0 2px rgba(245, 166, 35, .35);
}

.formTextarea{
  min-height: 200px;
  resize: vertical;
  line-height: 1.6;
}

.formCheckboxRow{
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 4px 0 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--form-ink);
  line-height: 1.5;
}

.formCheckboxRow input[type="checkbox"]{
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  flex-shrink: 0;
  accent-color: var(--form-orange);
  cursor: pointer;
}

.formCheckboxRow label{
  cursor: pointer;
}

.formSubmit{
  display: block;
  width: 100%;
  margin-top: 28px;
  padding: 18px 24px;
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .04em;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(90deg, var(--form-orange-deep) 0%, var(--form-orange) 45%, #ffb84d 100%);
  transition: filter .2s ease, transform .15s ease;
}

.formSubmit:hover{
  filter: brightness(1.04);
}

.formSubmit:active{
  transform: scale(0.99);
}

.formNote{
  margin: 24px 0 0;
  text-align: center;
  font-size: 13px;
  line-height: 1.65;
  color: var(--form-muted);
}

.formBack{
  display: block;
  margin-top: 32px;
  text-align: center;
  font-size: 14px;
  color: var(--form-muted);
  text-decoration: none;
}

.formBack:hover{
  text-decoration: underline;
  color: var(--form-ink);
}

/* 送信完了ページ */
.formThanks{
  text-align: center;
}

.formThanks__title{
  margin-bottom: 24px;
  color: var(--form-ink);
}

.formThanks__lead{
  margin-bottom: 0;
  font-weight: 600;
}

a.formThanksBack{
  display: block;
  width: 100%;
  max-width: 100%;
  margin-top: 40px;
  padding: 18px 24px;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .04em;
  color: #fff !important;
  text-align: center;
  text-decoration: none;
  background: linear-gradient(90deg, var(--form-orange-deep) 0%, var(--form-orange) 45%, #ffb84d 100%);
  transition: filter .2s ease, transform .15s ease;
}

a.formThanksBack:hover{
  filter: brightness(1.04);
}

a.formThanksBack:active{
  transform: scale(0.99);
}

@media (max-width: 480px){
  body{
    padding: 32px 16px 56px;
  }

  .formLead{
    margin-bottom: 36px;
    font-size: 14px;
  }

  .formFields{
    gap: 24px;
  }
}