:root {
      /* DESIGN.md のブランド定数 */
      --navy: #0A1E3D;
      --blue: #164999;
      --blue-dark: #0E3270;
      --blue-weak: #E9EFF9;
      --ink: #0A1E3D;
      --sub: #556478;
      --line: #E6E9EF;
      --bg: #F6F7F9;
      --ok: #178a4c;
      --danger: #C8102E;
    }
    * { box-sizing: border-box; }
    html, body { margin: 0; }
    body {
      font-family: "Inter", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, -apple-system, sans-serif;
      font-feature-settings: "palt" 1;
      background: var(--bg); color: var(--ink); line-height: 1.7;
    }
    /* ── ヘッダー ── */
    .topbar {
      background: var(--navy); color: #fff;
      padding: 14px 24px; display: flex; align-items: center; gap: 10px;
    }
    .brand { font-weight: 800; font-size: 1.15rem; letter-spacing: .06em; }
    .brand small { font-weight: 400; font-size: .7rem; opacity: .75; margin-left: 8px; letter-spacing: .1em; }
    .wrap { max-width: 960px; margin: 0 auto; padding: 28px 20px 90px; }

    .meta-chip {
      display: inline-block; background: var(--blue-weak); color: var(--blue);
      font-weight: 700; font-size: .8rem; padding: 3px 12px; border-radius: 999px; margin-bottom: 8px; margin-right: 6px;
    }
    .meta-chip.meet { background: #e7f6ed; color: var(--ok); }
    .resched-banner { display: none; background: var(--blue-weak); border: 1px solid #C9D6EE;
      border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; color: var(--navy); font-size: .9rem; }
    h1.title { font-size: 1.45rem; margin: 0 0 6px; color: var(--navy); }
    .desc { color: var(--sub); margin: 0 0 4px; font-size: .95rem; }
    /* 説明が長いときは畳んで、先に日程が見えるようにする（「続きを読む」で全文が出る） */
    .desc.folded { max-height: 6.8em; overflow: hidden; }
    .desc-more {
      display: none; margin: 0 0 10px; border: 0; background: none; padding: 6px 0;
      color: var(--blue); font-weight: 700; font-size: .88rem; cursor: pointer; font-family: inherit;
    }
    .desc-more.on { display: inline-block; }
    .host { color: var(--sub); font-size: .85rem; margin-bottom: 22px; }

    /* ── ステップバー ── */
    .steps { display: flex; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; margin-bottom: 24px; }
    .step { flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 6px; font-size: .9rem; color: var(--sub); background: #fff; border-left: 1px solid var(--line); }
    .step:first-child { border-left: 0; }
    .step .num {
      width: 22px; height: 22px; border-radius: 50%; background: #cbd5e1; color: #fff;
      display: inline-flex; align-items: center; justify-content: center; font-size: .75rem; font-weight: 700; flex: none;
    }
    .step.active { background: var(--blue-weak); color: var(--blue); font-weight: 700; }
    .step.active .num { background: var(--blue); }
    .step.clickable { cursor: pointer; }
    .step.clickable:hover { background: var(--bg); }
    .step.done .num { background: var(--ok); }

    .card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; }

    /* ── カレンダーグリッド ── */
    .cal-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
    .cal-month { font-weight: 800; font-size: 1.1rem; color: var(--navy); }
    .cal-tz { color: var(--sub); font-size: .8rem; }
    /* 「最短で取れる日」「いつまで受付か」の1行案内 */
    .cal-first { color: var(--blue); font-size: .84rem; margin-top: 4px; }
    .cal-first b { font-weight: 800; }
    /* 表に出している時間帯のご案内（空きが夜だけの週で、どこを見ればよいか分かるように） */
    .cal-span { color: var(--sub); font-size: .8rem; margin-top: 3px; }
    .cal-span b { color: var(--blue); font-weight: 800; }
    .cal-nav { display: flex; gap: 8px; }
    /* 空き枠が無いときのご案内（表の上＝最初に見える位置に出す） */
    .cal-note {
      background: #F1F3F7; color: var(--sub);
      border-radius: 10px; padding: 10px 14px; margin: 0 0 14px;
      font-size: .84rem; line-height: 1.65;
    }
    .cal-note b { color: var(--ink); }
    .cal-note .empty-next { margin-left: 8px; }
    .nav-btn {
      border: 1.5px solid #C9D6EE; background: #fff; border-radius: 10px;
      padding: 10px 18px; font-size: .92rem; cursor: pointer; font-weight: 700;
      color: var(--blue); font-family: inherit; white-space: nowrap;
    }
    .nav-btn:disabled { opacity: .4; cursor: default; color: var(--sub); border-color: var(--line); }
    .nav-btn:not(:disabled):hover { background: var(--blue-weak); border-color: var(--blue); }

    .grid-scroll { overflow-x: auto; }
    .grid { display: flex; min-width: 640px; }
    .time-axis { width: 52px; flex: none; position: relative; }
    .time-axis .tick { position: absolute; right: 8px; transform: translateY(-50%); font-size: .72rem; color: var(--sub); }
    .day-col { flex: 1; min-width: 84px; border-left: 1px solid var(--line); }
    .day-head {
      text-align: center; padding: 8px 2px; font-size: .85rem; font-weight: 700;
      border-bottom: 2px solid var(--line); color: var(--ink);
    }
    .day-head .dow { font-size: .72rem; font-weight: 600; color: var(--sub); }
    .day-head.sat .dow { color: var(--blue); }
    .day-head.sun .dow, .day-head.hol .dow { color: var(--danger); }
    .day-head.sun, .day-head.hol { color: var(--danger); }
    .hol-badge { display: inline-block; background: var(--danger); color: #fff; border-radius: 4px;
      font-size: .58rem; font-weight: 700; padding: 0 4px; margin-left: 3px; vertical-align: 2px; }
    .day-head.today { color: var(--blue); }
    .day-head.today .today-mark {
      display: inline-block; background: var(--blue); color: #fff; border-radius: 999px;
      font-size: .62rem; font-weight: 700; padding: 0 7px; margin-left: 3px; vertical-align: 2px;
    }
    .day-body { position: relative; background-image: repeating-linear-gradient(to bottom, transparent, transparent 59px, var(--line) 59px, var(--line) 60px); }
    .day-body.today { background-color: #F2F6FC; }
    /* 一般的な勤務時間帯の目安（薄い帯） */
    .work-band { position: absolute; left: 0; right: 0; background: rgba(22,73,153,.055); pointer-events: none; }
    .scroll-hint .legend { display: inline-flex; gap: 14px; }
    .legend-item { display: inline-flex; align-items: center; gap: 5px; }
    .legend-swatch { width: 12px; height: 12px; border-radius: 3px; background: rgba(22,73,153,.14); display: inline-block; }

    /* ── スマホ専用：日付を選ぶ→その日の枠を縦に並べる（TimeRex風・自由に押せる） ── */
    .mobile-cal { display: none; }
    .m-days { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 10px; margin-bottom: 6px; -webkit-overflow-scrolling: touch; }
    .m-day { flex: 0 0 auto; min-width: 54px; text-align: center; border: 1px solid var(--line); border-radius: 12px; padding: 8px 4px; cursor: pointer; background: #fff; user-select: none; }
    .m-day .m-dow { font-size: .68rem; color: var(--sub); }
    .m-day .m-date { font-size: 1.15rem; font-weight: 800; color: var(--ink); line-height: 1.3; }
    .m-day.sat .m-dow { color: var(--blue); }
    .m-day.sun .m-date, .m-day.sun .m-dow, .m-day.hol .m-date, .m-day.hol .m-dow { color: var(--danger); }
    .m-day.on { background: var(--blue); border-color: var(--blue); }
    .m-day.on .m-dow, .m-day.on .m-date { color: #fff; }
    .m-day.disabled { opacity: .35; pointer-events: none; }
    .m-day .m-hol { font-size: .58rem; background: var(--danger); color: #fff; border-radius: 4px; padding: 0 4px; display: inline-block; }
    .m-slots { display: flex; flex-direction: column; gap: 8px; }
    .m-slot { width: 100%; padding: 15px 34px; border: 1.5px solid var(--blue); background: var(--blue-weak); color: var(--blue);
      border-radius: 12px; font-weight: 700; font-size: 1.02rem; cursor: pointer; font-family: inherit; transition: .12s;
      position: relative; text-align: center; }
    .m-slot::after { content: "›"; position: absolute; right: 15px; top: 50%; transform: translateY(-52%); font-size: 1.5rem; line-height: 1; opacity: .65; }
    .m-slot:active, .m-slot:hover { background: var(--blue); color: #fff; }
    .m-none { color: var(--sub); text-align: center; padding: 24px 0; }
    /* 表示切替：カレンダー（グリッド）↔ 時間から選ぶ（リスト） */
    .view-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
    .vt { border: 0; background: #fff; padding: 8px 12px; font-size: .82rem; font-weight: 700; color: var(--sub); cursor: pointer; font-family: inherit; white-space: nowrap; }
    .vt.on { background: var(--blue); color: #fff; }
    .cal-legend { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 12px; font-size: .72rem; color: var(--sub); }
    .cal-card.view-list .grid-scroll, .cal-card.view-list .scroll-hint, .cal-card.view-list .cal-legend { display: none; }
    .cal-card.view-list .mobile-cal { display: block; }
    @media (max-width: 560px) {
      .vt { padding: 8px 10px; font-size: .76rem; }
    }
    .axis-body { position: relative; }
    .slot-block {
      position: absolute; left: 3px; right: 3px;
      background: var(--blue); color: #fff; border: 0; border-radius: 6px;
      font-size: .72rem; font-weight: 700; cursor: pointer; padding: 2px 4px;
      display: flex; align-items: flex-start; justify-content: center;
      transition: background .12s; line-height: 1.4; font-family: inherit;
    }
    .slot-block:hover { background: var(--blue-dark); }
    .empty-note { text-align: center; color: var(--sub); padding: 26px 0 8px; }
    .empty-next {
      display: inline-block; margin-left: 10px; border: 1px solid var(--blue); background: #fff;
      color: var(--blue); border-radius: 10px; padding: 8px 18px; font-size: .9rem;
      font-weight: 700; cursor: pointer; font-family: inherit;
    }
    .empty-next:hover { background: var(--blue-weak); }
    /* 7日ぜんぶが収まるので横スクロールの案内は出さない（幅が中途半端な端末のときだけ出す） */
    .scroll-hint { display: none; text-align: center; color: var(--sub); font-size: .75rem; margin-top: 8px; }
    @media (min-width: 561px) and (max-width: 680px) { .scroll-hint { display: block; } }

    /* ── フォーム ── */
    .sel-box {
      background: var(--blue-weak); border: 1px solid #C9D6EE; border-radius: 10px;
      padding: 12px 16px; font-weight: 700; color: var(--navy); margin-bottom: 6px;
    }
    .backlink { font-size: .85rem; color: var(--sub); text-decoration: underline; cursor: pointer; }
    label { display: block; font-weight: 700; margin: 16px 0 4px; font-size: .9rem; }
    .req { color: var(--danger); font-size: .75rem; font-weight: 600; margin-left: 4px; }
    .field-err, .field-err:focus { border-color: var(--danger) !important; outline: 2px solid rgba(200,16,46,.35) !important; border-radius: 10px; }
    input, textarea {
      width: 100%; border: 1px solid var(--line); border-radius: 10px;
      padding: 11px 12px; font-size: 1rem; font-family: inherit;
    }
    input:focus, textarea:focus, select:focus { outline: 2px solid var(--blue); border-color: transparent; }
    textarea { min-height: 90px; resize: vertical; }
    select {
      width: 100%; border: 1px solid var(--line); border-radius: 10px;
      padding: 11px 12px; font-size: 1rem; font-family: inherit; background: #fff;
    }
    .choice-group { display: flex; flex-direction: column; gap: 6px; }
    .choice { display: flex; align-items: center; gap: 8px; font-weight: 400; margin: 0; cursor: pointer; }
    .choice input { width: auto; }
    /* 「その他」を選んだときだけ開く記入欄（チェックの位置に合わせて少し右へ寄せる） */
    .other-input { margin: 4px 0 2px 26px; width: calc(100% - 26px); font-size: .95rem; }
    .primary {
      width: 100%; margin-top: 22px; background: var(--blue); color: #fff;
      border: 0; border-radius: 10px; padding: 15px; font-size: 1.05rem;
      font-weight: 700; cursor: pointer; font-family: inherit; transition: background .12s;
    }
    .primary:hover { background: var(--blue-dark); }
    .primary:disabled { opacity: .5; cursor: not-allowed; }
    .error { color: var(--danger); margin-top: 12px; font-size: .9rem; }

    /* ── 完了 ── */
    .done-mark { width: 64px; height: 64px; border-radius: 50%; background: #e7f6ed; color: var(--ok); font-size: 2rem; display: flex; align-items: center; justify-content: center; margin: 4px auto 14px; }
    .done-title { text-align: center; color: var(--navy); font-size: 1.3rem; font-weight: 800; margin: 0 0 16px; }
    .meet-btn {
      display: block; text-align: center; margin-top: 14px; background: var(--ok); color: #fff;
      text-decoration: none; padding: 13px 16px; border-radius: 10px; font-weight: 700;
    }
    .cal-add { margin-top: 16px; }
    .cal-add-label { text-align: center; color: var(--sub); font-size: .82rem; margin-bottom: 8px; }
    .cal-btns { display: flex; gap: 10px; flex-wrap: wrap; }
    .cal-btn { flex: 1; min-width: 150px; text-align: center; border: 1px solid var(--line); background: #fff;
      color: var(--ink); text-decoration: none; padding: 12px 10px; border-radius: 10px; font-weight: 700; font-size: .9rem; transition: .12s; }
    .cal-btn:hover { border-color: var(--blue); color: var(--blue); }
    .footer { text-align: center; color: var(--sub); font-size: .78rem; margin-top: 44px; }
    .spinner { text-align: center; color: var(--sub); padding: 48px 0; }
    .spinner::before {
      content: ""; display: block; width: 28px; height: 28px; margin: 0 auto 12px;
      border: 3px solid var(--line); border-top-color: var(--blue); border-radius: 50%;
      animation: spin .8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }
    @media (max-width: 640px) {
      .wrap { padding: 20px 12px 70px; }
      .step span.lbl { font-size: .78rem; }
    }
    /* ── スマホ対応（追加） ── */
    @media (max-width: 560px) {
      .topbar { padding: 12px 16px; }
      #admin-link { padding: 6px 10px !important; font-size: .78rem !important; }
      .brand { font-size: 1.05rem; }
      h1.title { font-size: 1.2rem; }
      .meta-chip { font-size: .74rem; padding: 3px 10px; }
      .steps { margin-bottom: 18px; }
      /* 手順（1・2・3）は3つとも1行に収める */
      .step { padding: 9px 2px; font-size: .74rem; gap: 4px; }
      .step .num { width: 18px; height: 18px; font-size: .66rem; flex: none; }
      .step span.lbl { white-space: nowrap; }
      /* 左右の余白を詰めて、日付と時間を大きく見せる */
      .wrap { padding: 18px 10px 70px; }
      .card { padding: 14px 12px; }
      /* 週の見出しと週送りを縦に積み、週送りは横幅いっぱいの大きなボタンにする */
      .cal-head { flex-direction: column; align-items: stretch; gap: 10px; }
      .cal-month { font-size: 1.12rem; }
      .cal-tz { font-size: .78rem; }
      .cal-nav { width: 100%; gap: 6px; }
      .cal-nav .nav-btn { flex: 1; padding: 13px 2px; font-size: .88rem; }
      /* 7日ぜんぶが画面に収まるように、列を細くして横スクロールを無くす */
      .grid { min-width: 0; }
      .time-axis { width: 34px; }
      .time-axis .tick { right: 3px; font-size: .7rem; white-space: nowrap; }
      .day-col { min-width: 0; }
      .day-head { font-size: .92rem; padding: 6px 1px; }
      .day-head .dow { font-size: .7rem; }
      .day-head.today .today-mark, .hol-badge { display: block; margin: 2px auto 0; font-size: .56rem; padding: 0 3px; }
      .slot-block { font-size: .7rem; left: 1px; right: 1px; border-radius: 5px; padding: 2px 0; }
      /* 日付チップ：7個ぶん収めつつ、指で押しやすい大きさにする */
      .m-days { gap: 4px; padding: 2px 0 12px; }
      .m-day { flex: 1 1 0; min-width: 0; padding: 9px 1px; border-radius: 11px; }
      .m-day .m-dow { font-size: .68rem; }
      .m-day .m-date { font-size: 1.22rem; }
      .m-day .m-hol { font-size: .52rem; padding: 0 2px; }
      /* 時間ボタン：この画面の主役。大きく読みやすく */
      .m-slot { padding: 17px 30px; font-size: 1.1rem; letter-spacing: .02em; }
      .m-slots { gap: 10px; }
      .cal-btns { flex-direction: column; }
      .cal-btn { min-width: 0; }
      .primary { padding: 14px; font-size: 1rem; }
    }

    /* ── 埋め込みモード（?embed=1 / iframe内）──
       LPに埋め込む用。サイトヘッダーとフッターを隠し、背景をLPに馴染ませる */
    body.embed { background: transparent; }
    body.embed .topbar, body.embed .footer { display: none; }
    body.embed .wrap { padding: 4px 4px 24px; max-width: none; }