* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: #f7f5f0;
  color: #333;
  line-height: 1.7;
}

.page {
  width: 100%;
  min-height: 100vh;
  padding: 48px 20px;
}

.container {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
}

.page-header {
  text-align: center;
  margin-bottom: 32px;
}

.page-header h1 {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-header p {
  margin: 0;
  font-size: 15px;
  color: #666;
}

.form-card,
.complete-card {
  background: #fff;
  padding: 36px;
  border-radius: 14px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

.form-card h2 {
  margin: 0 0 24px;
  font-size: 22px;
  line-height: 1.5;
}

.product-box {
  background: #f4f4f4;
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 28px;
}

.product-box dl,
.confirm-list dl {
  margin: 0;
}

.product-box div,
.confirm-list div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid #e5e5e5;
}

.product-box div:last-child,
.confirm-list div:last-child {
  border-bottom: none;
}

.product-box dt,
.confirm-list dt {
  font-weight: 700;
  color: #555;
}

.product-box dd,
.confirm-list dd {
  margin: 0;
  word-break: break-word;
}

.form-group {
  margin-bottom: 22px;
}

label,
.label-text {
  display: block;
  margin: 0 0 8px;
  font-weight: 700;
  color: #333;
}

input[type="text"],
input[type="tel"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #ccc;
  border-radius: 8px;
  background: #fff;
  font-size: 16px;
  font-family: inherit;
  line-height: 1.6;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #222;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.08);
}

.radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.radio-card {
  position: relative;
  display: block;
  margin: 0;
  cursor: pointer;
}

.radio-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-card span {
  display: block;
  width: 100%;
  padding: 14px 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  text-align: center;
  font-weight: 700;
  background: #fff;
  transition: 0.2s;
}

.radio-card input:checked + span {
  background: #222;
  color: #fff;
  border-color: #222;
}

.btn-primary,
.btn-secondary {
  width: 100%;
  padding: 15px 24px;
  border-radius: 8px;
  border: none;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: 0.2s;
}

.btn-primary {
  background: #222;
  color: #fff;
}

.btn-secondary {
  background: #e5e5e5;
  color: #333;
}

.btn-primary:hover,
.btn-secondary:hover {
  opacity: 0.85;
}

.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 30px;
}

.error {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #fff0f0;
  color: #c00;
  font-weight: 700;
}

.confirm-list {
  margin-bottom: 28px;
}

.complete-card {
  text-align: center;
}

.complete-card h1 {
  margin: 0 0 20px;
  font-size: 28px;
}

.complete-card p {
  margin: 0 0 12px;
  color: #555;
}

/* タブレット */
@media (max-width: 900px) {
  .page {
    padding: 40px 18px;
  }

  .form-card,
  .complete-card {
    padding: 32px;
  }
}

/* スマホ */
@media (max-width: 768px) {
  .page {
    padding: 28px 14px;
  }

  .page-header {
    margin-bottom: 24px;
  }

  .page-header h1 {
    font-size: 23px;
  }

  .page-header p {
    font-size: 14px;
    text-align: left;
  }

  .form-card,
  .complete-card {
    padding: 22px 18px;
    border-radius: 12px;
  }

  .form-card h2 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .product-box {
    padding: 14px;
    margin-bottom: 24px;
  }

  .product-box div,
  .confirm-list div {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 0;
  }

  .product-box dt,
  .confirm-list dt {
    font-size: 14px;
  }

  .product-box dd,
  .confirm-list dd {
    font-size: 15px;
  }

  .radio-group {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  input[type="text"],
  input[type="tel"],
  input[type="email"],
  select,
  textarea {
    font-size: 16px;
    padding: 13px;
  }

  .btn-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .complete-card h1 {
    font-size: 23px;
  }
}

/* 小さいスマホ */
@media (max-width: 380px) {
  .page {
    padding: 20px 10px;
  }

  .form-card,
  .complete-card {
    padding: 20px 14px;
  }

  .page-header h1 {
    font-size: 21px;
  }
}