.hb-app {
  --hb-ink: #1c1c1c;
  --hb-sub: #6b6b6b;
  --hb-line: #d9d9d4;
  --hb-bg: #ffffff;
  --hb-soft: #f6f5f1;
  --hb-accent: #1c1c1c;
  --hb-ok: #2f6b4f;
  --hb-ng: #a63a2f;
  max-width: 760px;
  margin: 0 auto;
  color: var(--hb-ink);
  font-size: 16px;
  line-height: 1.8;
}
.hb-app * { box-sizing: border-box; }
.hb-app h3 { font-size: 1.15rem; font-weight: 600; margin: 0 0 14px; letter-spacing: .04em; }
.hb-app h4 { font-size: 1rem; font-weight: 600; margin: 24px 0 4px; }
.hb-sec { margin: 0 0 44px; }
.hb-muted { color: var(--hb-sub); }
.hb-hint { color: var(--hb-sub); font-size: .88rem; margin: 6px 0 12px; }
.hb-error { color: var(--hb-ng); font-size: .92rem; margin: 8px 0; }

.hb-notice { border: 1px solid var(--hb-ink); padding: 16px 18px; margin: 0 0 36px; background: var(--hb-soft); }
.hb-notice-sm { margin: 20px 0; padding: 12px 14px; font-size: .92rem; }

/* メニュー */
.hb-menus { display: grid; gap: 10px; }
.hb-menu { display: grid; gap: 2px; text-align: left; width: 100%; padding: 14px 16px; background: var(--hb-bg); border: 1px solid var(--hb-line); cursor: pointer; font: inherit; color: inherit; }
.hb-menu:hover { border-color: var(--hb-ink); }
.hb-menu.is-on { border-color: var(--hb-ink); box-shadow: inset 0 0 0 1px var(--hb-ink); }
.hb-menu-name { font-weight: 600; }
.hb-menu-meta, .hb-menu-price { color: var(--hb-sub); font-size: .9rem; }

/* 希望の枠 */
.hb-choices { display: grid; gap: 8px; margin: 0 0 6px; }
.hb-choice { display: grid; gap: 2px; padding: 12px 14px; border: 1px dashed var(--hb-line); cursor: pointer; position: relative; background: var(--hb-bg); }
.hb-choice.is-active { border: 1px solid var(--hb-ink); }
.hb-choice.is-filled { border-style: solid; background: var(--hb-soft); }
.hb-choice-label { font-size: .82rem; color: var(--hb-sub); }
.hb-choice-value { font-weight: 600; }
.hb-choice-price { font-size: .86rem; color: var(--hb-sub); }
.hb-clear { position: absolute; right: 10px; top: 10px; background: none; border: 0; color: var(--hb-sub); font-size: .8rem; text-decoration: underline; cursor: pointer; }

/* カレンダー */
.hb-cal-head { display: flex; align-items: center; justify-content: space-between; margin: 18px 0 8px; }
.hb-nav { width: 40px; height: 40px; border: 1px solid var(--hb-line); background: var(--hb-bg); font-size: 1.2rem; cursor: pointer; color: inherit; }
.hb-nav:disabled { opacity: .35; cursor: default; }
.hb-cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.hb-dow { text-align: center; font-size: .8rem; color: var(--hb-sub); padding: 4px 0; }
.hb-dow.is-sun { color: var(--hb-ng); }
.hb-dow.is-sat { color: #3b5b8c; }
.hb-day { aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; border: 1px solid transparent; background: none; font: inherit; color: var(--hb-line); }
.hb-day.is-open { border-color: var(--hb-line); color: var(--hb-ink); background: var(--hb-bg); cursor: pointer; font-weight: 600; }
.hb-day.is-open.is-many { background: #e3f0e8; border-color: #8fbca4; color: #1f4d38; }
.hb-day.is-open:hover { border-color: var(--hb-ink); }
.hb-day.is-open.is-many.is-sel,
.hb-day.is-sel { background: var(--hb-accent); color: #fff; border-color: var(--hb-accent); }
.hb-day.is-off { color: #bdbdb7; }

/* 時間 */
.hb-times { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; margin-top: 8px; }
.hb-time { padding: 10px 8px; border: 1px solid var(--hb-line); background: var(--hb-bg); cursor: pointer; font: inherit; color: inherit; }
.hb-time:hover { border-color: var(--hb-ink); }
.hb-time.is-chosen { background: var(--hb-accent); color: #fff; border-color: var(--hb-accent); }

/* 入力欄 */
.hb-field { margin: 0 0 18px; }
.hb-field label { display: block; font-size: .92rem; margin: 0 0 6px; }
.hb-req { margin-left: 8px; font-size: .72rem; border: 1px solid var(--hb-ink); padding: 0 6px; }
.hb-field input, .hb-field textarea { width: 100%; padding: 12px; border: 1px solid var(--hb-line); background: var(--hb-bg); font: inherit; color: inherit; border-radius: 0; }
.hb-field input:focus, .hb-field textarea:focus { outline: 2px solid var(--hb-ink); outline-offset: 0; }
.hb-hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.hb-consent { display: block; font-size: .9rem; margin: 6px 0; }
.hb-submit { width: 100%; padding: 16px; border: 0; background: var(--hb-accent); color: #fff; font: inherit; font-weight: 600; letter-spacing: .06em; cursor: pointer; }
.hb-submit:disabled { opacity: .55; cursor: default; }

.hb-policy h3 { color: var(--hb-ink); }
.hb-policy { font-size: .92rem; color: var(--hb-sub); border-top: 1px solid var(--hb-line); padding-top: 28px; }
.hb-policy-title { margin: 14px 0 2px; color: var(--hb-ink); font-weight: 600; }
.hb-policy ul { margin: 0 0 0 1.2em; padding: 0; }

.hb-result { margin: 24px 0; }
.hb-result p { margin: 0; padding: 16px 18px; border: 1px solid; }
.hb-result.is-ok p { border-color: var(--hb-ok); color: var(--hb-ok); background: #f1f7f3; }
.hb-result.is-ng p { border-color: var(--hb-ng); color: var(--hb-ng); background: #fbf2f0; }

@media (max-width: 520px) {
  .hb-app { font-size: 15px; }
  .hb-day { font-size: .9rem; }
}

.hb-legend { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 10px 0 0; padding: 0; font-size: .82rem; color: var(--hb-sub); }
.hb-legend li { display: flex; align-items: center; gap: 6px; margin: 0; padding: 0; }
.hb-sw { display: inline-block; width: 16px; height: 16px; border: 1px solid var(--hb-line); background: var(--hb-bg); }
.hb-sw.is-many { background: #e3f0e8; border-color: #8fbca4; }
.hb-sw.is-off { background: none; border-color: transparent; position: relative; }
.hb-sw.is-off::after { content: '9'; position: absolute; inset: 0; text-align: center; line-height: 16px; font-size: .8rem; color: #bdbdb7; }