:root {
  --brown: #ae6226;
  --brown-dark: #8a4c1c;
  --navy: #04384c;
  --text: #222;
  --muted: #555;
  --line: #cfc6bb;
  --bg: #fdfdfd;
  --soft: #f7f1ea;
  --error: #c0262d;
  --error-bg: #fdf0f0;
  --mincho: "Zen Old Mincho", serif;
  --sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.8;
}
button, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ヘッダー・フッター */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.site-header__logo {
  font-family: var(--mincho);
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: .08em;
}
.site-header__back { color: var(--brown); font-size: 16px; }
.site-footer {
  margin-top: 64px;
  padding: 32px 24px;
  background: var(--navy);
  color: #fff;
  text-align: center;
  font-size: 15px;
}
.site-footer p { margin: 0; }
.site-footer__name { font-family: var(--mincho); font-size: 20px; margin-bottom: 8px !important; }

/* 本体 */
.order { max-width: 760px; margin: 0 auto; padding: 40px 16px 0; }
.order__title {
  margin: 0 0 24px;
  font-family: var(--mincho);
  font-size: 30px;
  line-height: 1.5;
  text-align: center;
  color: var(--navy);
}
.order__lead { margin: 0 0 24px; }
.order__notice { padding: 16px; border: 2px solid var(--error); background: var(--error-bg); }

.steps { display: flex; gap: 8px; margin: 0 0 32px; padding: 0; list-style: none; }
.steps__item {
  flex: 1;
  padding: 10px 4px;
  border-radius: 6px;
  background: #ece7e1;
  color: var(--muted);
  text-align: center;
  font-weight: 700;
}
.steps__item.is-current { background: var(--brown); color: #fff; }

.req, .opt {
  display: inline-block;
  margin-left: 10px;
  padding: 0 8px;
  border-radius: 4px;
  font-size: 14px;
  line-height: 1.7;
  vertical-align: 2px;
}
.req { background: var(--error); color: #fff; }
.opt { background: #e6e1da; color: var(--muted); }
.order__lead .req { margin-left: 0; }

/* ブロック */
.block { margin-bottom: 40px; }
.block__title {
  margin: 0 0 20px;
  padding: 10px 16px;
  border-left: 6px solid var(--brown);
  background: var(--soft);
  font-family: var(--mincho);
  font-size: 24px;
  line-height: 1.5;
}
.block__lead { margin: 0 0 16px; }

/* 入力欄 */
.field { margin-bottom: 24px; }
.field__label { display: block; margin-bottom: 6px; font-weight: 700; }
.field__input {
  display: block;
  width: 100%;
  min-height: 56px;
  padding: 10px 14px;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-size: 20px;
}
.field__input:focus { outline: 3px solid rgba(174, 98, 38, .35); outline-offset: 1px; border-color: var(--brown); }
.field__input[aria-invalid="true"] { border-color: var(--error); background: var(--error-bg); }
.field__textarea { min-height: 140px; resize: vertical; }
.field__suffix, .field__zip { display: flex; align-items: center; gap: 10px; }
.field__suffix span, .field__zip span { flex-shrink: 0; font-size: 20px; }
.field__zip .field__input { max-width: 220px; }
.field__suffix--qty .field__input { max-width: 140px; }
.field__note { margin: 6px 0 0; color: var(--muted); font-size: 16px; }
.field__error { margin: 6px 0 0; color: var(--error); font-weight: 700; }
.field__error:empty { display: none; }
.field__fixed { margin: 0; padding: 10px 14px; border-radius: 6px; background: var(--soft); font-size: 20px; }

.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; margin-bottom: 24px; }
.field-pair .field { margin-bottom: 0; }
.field-pair .field__note, .field-pair .field__error { grid-column: 1 / -1; }

/* お届け先 */
.recipient {
  margin: 0 0 24px;
  padding: 20px 20px 4px;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.recipient__title {
  padding: 0 10px;
  font-family: var(--mincho);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
}
.recipient__same {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--soft);
  cursor: pointer;
}
.recipient__same input { width: 24px; height: 24px; accent-color: var(--brown); }

/* ボタン */
.btn-main, .btn-sub, .btn-add, .btn-remove {
  display: block;
  width: 100%;
  border-radius: 999px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.btn-main {
  max-width: 420px;
  margin: 0 auto;
  padding: 18px 24px;
  border: 0;
  background: var(--brown);
  color: #fff;
  font-size: 22px;
  box-shadow: 0 4px 0 var(--brown-dark);
}
.btn-main:hover { background: var(--brown-dark); }
.btn-main:disabled { opacity: .6; cursor: wait; }
.btn-sub {
  max-width: 420px;
  margin: 16px auto 0;
  padding: 14px 24px;
  border: 2px solid var(--brown);
  background: #fff;
  color: var(--brown);
  font-size: 18px;
}
.btn-add {
  padding: 14px 24px;
  border: 2px dashed var(--brown);
  background: #fff;
  color: var(--brown);
  font-size: 20px;
}
.btn-remove {
  width: auto;
  margin: 0 0 16px auto;
  padding: 6px 16px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 15px;
}

.order-form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.order-form__status { min-height: 1.8em; margin: 24px 0 16px; color: var(--error); font-weight: 700; text-align: center; }

/* 確認・完了 */
.confirm:focus, .thanks:focus { outline: none; }
.confirm__heading {
  margin: 28px 0 8px;
  font-family: var(--mincho);
  font-size: 21px;
  color: var(--navy);
}
.confirm__list {
  display: grid;
  grid-template-columns: 9em 1fr;
  margin: 0;
  border-top: 1px solid var(--line);
}
.confirm__list dt, .confirm__list dd { margin: 0; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.confirm__list dt { background: var(--soft); font-weight: 700; }
.confirm__list dd { white-space: pre-wrap; word-break: break-word; }
.confirm__total { margin: 24px 0 0; font-size: 20px; font-weight: 700; text-align: right; }
.confirm__btns { margin-top: 8px; }

.thanks { padding: 32px 20px; border-radius: 10px; background: var(--soft); text-align: center; }
.thanks__title { margin: 0 0 16px; font-family: var(--mincho); font-size: 26px; color: var(--navy); }

@media (max-width: 600px) {
  body { font-size: 17px; }
  .site-header { padding: 12px 16px; }
  .order { padding-top: 28px; }
  .order__title { font-size: 25px; }
  .block__title { font-size: 21px; }
  .field-pair { grid-template-columns: 1fr; }
  .field-pair .field { margin-bottom: 24px; }
  .field-pair .field:nth-child(2) { margin-bottom: 0; }
  .recipient { padding: 16px 14px 4px; }
  .confirm__list { grid-template-columns: 1fr; }
  .confirm__list dt { border-bottom: 0; padding-bottom: 4px; }
}