: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; }
    .topbar { background: var(--navy); color: #fff; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; }
    .brand { font-weight: 800; font-size: 1.15rem; letter-spacing: .06em; cursor: pointer; }
    .brand small { font-weight: 400; font-size: .7rem; opacity: .75; margin-left: 8px; letter-spacing: .1em; }
    .topbar .user { font-size: .85rem; opacity: .9; }
    /* 管理⇄利用者の行き来リンク（管理側だけに出す） */
    .topbar .user a.topnav { color: #fff; margin-left: 18px; text-decoration: none; font-weight: 700; }
    .topbar .user a.topnav:hover { text-decoration: underline; }
    .topbar .user a.topnav.view { background: rgba(255,255,255,.14); border-radius: 8px; padding: 7px 14px; }
    .lead { color: var(--sub); font-size: .9rem; margin: -10px 0 20px; }
    /* 管理画面トップの操作ボタン（2026-09-02）。
       予約ページが増えても下に流れないよう、常に一番上に置く。 */
    .home-tools { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 18px; }
    .tool-btn {
      border: 1px solid var(--line); background: #fff; border-radius: 10px;
      padding: 10px 18px; font-family: inherit; font-size: .92rem; font-weight: 700;
      color: var(--navy); cursor: pointer; transition: all .12s;
    }
    .tool-btn:hover { border-color: var(--blue); color: var(--blue); }
    .tool-btn.on { background: var(--blue); border-color: var(--blue); color: #fff; }
    .tool-panel { margin: 0 0 24px; }
    @media (max-width: 560px) {
      .home-tools { gap: 6px; }
      .tool-btn { flex: 1 1 auto; padding: 10px 12px; font-size: .86rem; }
    }
    details.sec { margin-top: 16px; }
    details.sec > summary {
      cursor: pointer; font-weight: 700; color: var(--navy); font-size: .98rem;
      padding: 14px 18px; user-select: none; list-style: none;
      background: #fff; border: 1px solid var(--line); border-radius: 12px;
      display: flex; align-items: center; gap: 10px; transition: .12s;
    }
    details.sec > summary::-webkit-details-marker { display: none; }
    details.sec > summary::before { content: "▸"; color: var(--sub); transition: transform .15s; }
    details.sec[open] > summary::before { transform: rotate(90deg); }
    details.sec > summary:hover { border-color: var(--blue); color: var(--blue); }
    details.sec[open] > summary { border-radius: 12px 12px 0 0; border-bottom-color: transparent; }
    details.sec .card { margin-top: 0; border-radius: 0 0 12px 12px; border-top: 0; }

    /* ── 共有ダイアログ（Googleカレンダー風） ── */
    .modal-bg { position: fixed; inset: 0; background: rgba(10,30,61,.5); display: none; align-items: center; justify-content: center; z-index: 60; padding: 20px; }
    .modal-bg.on { display: flex; }
    .modal { background: #fff; border-radius: 18px; max-width: 560px; width: 100%; padding: 26px; box-shadow: 0 24px 70px rgba(10,30,61,.35); }
    .modal h3 { margin: 0 0 4px; font-size: 1.2rem; color: var(--navy); }
    .modal .m-sub { color: var(--sub); font-size: .86rem; margin: 0 0 20px; line-height: 1.6; }
    .tabs { display: flex; gap: 8px; margin-bottom: 18px; }
    .tab { flex: 1; padding: 12px 8px; font-weight: 700; font-size: .9rem; color: var(--sub); cursor: pointer; border: 1px solid var(--line); border-radius: 12px; background: #fff; font-family: inherit; display: flex; flex-direction: column; align-items: center; gap: 4px; transition: .12s; }
    .tab.on { color: var(--blue); border-color: var(--blue); background: var(--blue-weak); }
    .tab:hover { border-color: var(--blue); }
    .m-label { font-weight: 700; font-size: .82rem; color: var(--ink); margin: 4px 0 6px; }
    .m-field { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; font-size: .84rem; color: var(--ink); word-break: break-all; font-family: "SFMono-Regular",Consolas,monospace; }
    textarea.m-field { width: 100%; min-height: 130px; resize: vertical; line-height: 1.5; }
    .m-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 18px; }
    .m-note { color: var(--sub); font-size: .78rem; }
    /* ヘルプ（使い方）モーダル */
    .help-sec { margin-bottom: 18px; }
    .help-sec h4 { margin: 0 0 6px; color: var(--blue); font-size: .98rem; }
    .help-sec ul { margin: 4px 0; padding-left: 20px; }
    .help-sec li { margin-bottom: 5px; font-size: .9rem; }
    .help-sec p { font-size: .9rem; margin: 4px 0; }
    .help-sec b { color: var(--navy); }
    .help-sec table { width: 100%; border-collapse: collapse; font-size: .82rem; margin-top: 6px; }
    .help-sec th, .help-sec td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
    .help-sec th { background: var(--bg); white-space: nowrap; }
    .wrap { max-width: 860px; margin: 0 auto; padding: 28px 20px 120px; }
    h1 { font-size: 1.35rem; color: var(--navy); margin: 0 0 18px; }
    h2 { font-size: 1.05rem; color: var(--navy); margin: 30px 0 10px; }
    .card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; }

    /* ── ページカード（一覧） ── */
    .page-card { margin-bottom: 14px; }
    .page-card .head { display: flex; align-items: center; gap: 8px; color: var(--sub); font-size: .82rem; font-weight: 700; flex-wrap: wrap; }
    .page-card .meet-ic { background: var(--blue-weak); color: var(--blue); border-radius: 6px; padding: 2px 8px; }
    .page-card .name { font-size: 1.15rem; font-weight: 800; color: var(--navy); margin: 8px 0 2px; }
    .page-card .who { color: var(--sub); font-size: .85rem; }
    .badge { border-radius: 6px; padding: 2px 10px; font-size: .78rem; font-weight: 700; margin-left: auto; }
    .badge.ok { background: #e7f6ed; color: var(--ok); }
    .badge.ng { background: #FBE9EC; color: var(--danger); }
    .badge.ng a { color: inherit; }
    .url-row { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
    .url-box { flex: 1; min-width: 220px; border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 10px 12px; font-size: .85rem; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .actions { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; align-items: center; }
    .act {
      border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 10px;
      padding: 10px 16px; font-size: .9rem; font-weight: 700; cursor: pointer; font-family: inherit;
      text-decoration: none; display: inline-flex; align-items: center; gap: 6px; transition: .12s;
    }
    .act:hover { border-color: var(--blue); color: var(--blue); }
    .act.blue { background: var(--blue); border-color: var(--blue); color: #fff; }
    .act.blue:hover { background: var(--blue-dark); }
    .act.danger { color: var(--danger); border-color: #F0C3CB; }
    .act.danger:hover { background: #FBE9EC; }
    .back { display: inline-block; margin-bottom: 14px; color: var(--blue); font-weight: 700; text-decoration: none; font-size: .9rem; }

    .conn { padding: 12px 16px; border-radius: 10px; margin-bottom: 18px; font-weight: 700; font-size: .92rem; }
    .conn.no { background: #FBE9EC; color: var(--danger); border: 1px solid #F0C3CB; }
    .conn a { color: inherit; }

    /* ── 確定した予定 ── */
    .tbl-scroll { overflow-x: auto; }
    table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 560px; }
    th { text-align: left; color: var(--sub); font-size: .78rem; font-weight: 700; padding: 8px 10px; background: var(--bg); }
    td { padding: 11px 10px; border-bottom: 1px solid var(--line); }
    td a { color: var(--blue); font-weight: 600; text-decoration: none; }
    td a:hover { text-decoration: underline; }
    .none-row { color: var(--sub); text-align: center; padding: 22px 0; }

    /* ── 直近の予約（10件ずつ・詳細を開ける） ── */
    .dash-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
    .dash-count { font-size: .85rem; font-weight: 700; color: var(--navy); }
    .nav-btn { padding: 8px 14px; font-size: .82rem; }
    .nav-btn:disabled { opacity: .35; cursor: default; border-color: var(--line); color: var(--ink); }
    table.dash-tbl { min-width: 780px; }
    .dash-tbl td { vertical-align: top; }
    .dash-tbl tr.dash-row { cursor: pointer; }
    .dash-tbl tr.dash-row:hover td { background: #F2F5FB; }
    .dash-tbl tr.on td { background: var(--blue-weak); }
    .dash-tbl .sub, .dash-count .sub { display: block; color: var(--sub); font-size: .76rem; font-weight: 400; line-height: 1.5; }
    .dash-count .sub { display: inline; margin-left: 6px; }
    /* 長い題名・会社名は1行に省略（全文は行を開けば読める） */
    .dash-tbl .one { display: block; max-width: 168px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .dash-open { border: 1px solid var(--line); background: #fff; color: var(--blue); border-radius: 8px;
      padding: 6px 12px; font-size: .78rem; font-weight: 700; font-family: inherit; cursor: pointer; white-space: nowrap; }
    .dash-open:hover { border-color: var(--blue); background: var(--blue-weak); }
    .dash-detail > td { background: var(--bg); padding: 16px 18px; }
    .dash-detail dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; font-size: .87rem; }
    .dash-detail dt { color: var(--sub); font-size: .8rem; font-weight: 700; white-space: nowrap; }
    .dash-detail dd { margin: 0; white-space: pre-wrap; word-break: break-word; }
    .dash-links { margin-top: 12px; font-size: .85rem; }
    .dash-links a { color: var(--blue); font-weight: 700; text-decoration: none; }
    .dash-links a:hover { text-decoration: underline; }
    .dash-links .sep { color: var(--line); margin: 0 8px; }

    /* ── 設定フォーム ── */
    label { display: block; font-weight: 700; margin: 18px 0 6px; font-size: .9rem; }
    .hint { color: var(--sub); font-weight: 400; font-size: .78rem; margin-left: 6px; }
    input, textarea { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 1rem; font-family: inherit; background: #fff; }
    input:focus, textarea:focus { outline: 2px solid var(--blue); border-color: transparent; }
    textarea { min-height: 70px; resize: vertical; }
    .btn-group { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; width: fit-content; }
    .bg-btn { border: 0; border-left: 1px solid var(--line); background: #fff; padding: 10px 20px; font-size: .95rem; font-weight: 700; cursor: pointer; font-family: inherit; color: var(--ink); }
    .bg-btn:first-child { border-left: 0; }
    .bg-btn.on { background: var(--blue); color: #fff; }
    .custom-in { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; }
    .custom-in input { width: 70px; padding: 6px 8px; text-align: center; }
    .weekdays { display: flex; gap: 6px; flex-wrap: wrap; }
    .wd { width: 44px; text-align: center; border: 1px solid var(--blue); color: var(--blue); background: #fff; border-radius: 8px; padding: 9px 0; cursor: pointer; font-weight: 700; user-select: none; }
    .wd.on { background: var(--blue); color: #fff; }
    .row2 { display: flex; gap: 12px; align-items: center; }
    .row2 input[type=time] { width: 130px; }
    .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
    @media (max-width: 620px) { .grid2 { grid-template-columns: 1fr; } }

    /* ── 質問項目エディタ ── */
    .q-item { border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 12px; background: var(--bg); }
    .q-top { display: flex; gap: 10px; align-items: center; }
    .q-top .q-label { flex: 1; }
    .q-item select { border: 1px solid var(--line); border-radius: 8px; padding: 10px; font-family: inherit; font-size: .9rem; background: #fff; }
    .q-sys-badge { font-size: .7rem; background: var(--blue-weak); color: var(--blue); padding: 4px 10px; border-radius: 6px; font-weight: 700; white-space: nowrap; }
    .q-item input { margin: 0; }
    .q-item > input { margin-top: 8px; }
    .q-row { display: flex; gap: 12px; align-items: center; margin-top: 10px; flex-wrap: wrap; }
    .q-row label { margin: 0; font-weight: 400; font-size: .88rem; display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
    .q-row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--blue); }
    .q-move { border: 1px solid var(--line); background: #fff; border-radius: 6px; cursor: pointer; padding: 3px 10px; font-weight: 700; color: var(--ink); }
    .q-move:disabled { opacity: .3; cursor: default; }
    .q-del { margin-left: auto; border: 0; background: none; color: var(--danger); cursor: pointer; font-size: .85rem; font-weight: 700; }
    .add-q { margin-top: 4px; }

    /* ── トグルスイッチ ── */
    .toggle-row { display: flex; align-items: center; gap: 12px; }
    .switch { position: relative; display: inline-block; width: 46px; height: 26px; flex: none; }
    .switch input { display: none; }
    .slider { position: absolute; inset: 0; background: #cbd5e1; border-radius: 26px; transition: .2s; cursor: pointer; }
    .slider::before { content: ""; position: absolute; height: 20px; width: 20px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .2s; }
    .switch input:checked + .slider { background: var(--blue); }
    .switch input:checked + .slider::before { transform: translateX(20px); }

    /* ── 管理者の一覧 ── */
    .admin-tbl { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 4px 0 0; }
    .admin-tbl th { text-align: left; font-size: .78rem; font-weight: 700; color: var(--muted); border-bottom: 1px solid var(--line); padding: 7px 10px; }
    .admin-tbl td { border-bottom: 1px solid var(--line); padding: 9px 10px; vertical-align: top; }
    .admin-tbl .sub { color: var(--muted); font-size: .8rem; }
    .tag-me { display: inline-block; margin-left: 7px; background: var(--blue-weak); color: var(--navy); border-radius: 999px; padding: 1px 9px; font-size: .72rem; font-weight: 700; }
    .rm-admin { border: 1px solid var(--line); background: #fff; color: var(--navy); border-radius: 8px; padding: 5px 12px; font-size: .8rem; font-weight: 600; cursor: pointer; font-family: inherit; }
    .rm-admin:hover { border-color: var(--danger); color: var(--danger); }

    /* ── 管理者チップ ── */
    .chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 12px; }
    .chip { display: inline-flex; align-items: center; gap: 8px; background: var(--blue-weak); color: var(--navy); border-radius: 999px; padding: 6px 8px 6px 14px; font-size: .88rem; font-weight: 600; }
    .chip button { border: 0; background: rgba(10,35,77,.12); color: var(--navy); border-radius: 50%; width: 20px; height: 20px; line-height: 1; cursor: pointer; font-size: .8rem; }
    .add-row { display: flex; gap: 8px; }
    .add-row input { flex: 1; }

    .savebar {
      position: fixed; left: 0; right: 0; bottom: 0; background: #fff;
      border-top: 1px solid var(--line); padding: 12px 20px; display: flex; justify-content: center; gap: 14px; align-items: center;
      box-shadow: 0 -4px 16px rgba(10,35,77,.06);
    }
    .save-btn { background: var(--blue); color: #fff; border: 0; border-radius: 10px; padding: 13px 60px; font-size: 1.02rem; font-weight: 800; cursor: pointer; font-family: inherit; }
    .save-btn:hover { background: var(--blue-dark); }
    .status { font-weight: 700; font-size: .9rem; }
    .status.ok { color: var(--ok); } .status.err { color: var(--danger); }
    .status.warn { color: #A05E03; }
    .toast-copy { color: var(--ok); font-weight: 700; font-size: .85rem; align-self: center; }
    .loading { text-align: center; color: var(--sub); padding: 40px 0; }
    .form-err { color: var(--danger); font-weight: 700; font-size: .88rem; margin-top: 10px; min-height: 1.2em; }

    /* ── スマホ対応 ── */
    @media (max-width: 560px) {
      .topbar { padding: 12px 16px; flex-wrap: wrap; gap: 4px; }
      .brand { font-size: 1.05rem; }
      .topbar .user a.topnav { margin-left: 10px; font-size: .8rem; }
      .topbar .user a.topnav.view { padding: 6px 10px; }
      .wrap { padding: 20px 14px 130px; }
      h1 { font-size: 1.2rem; }
      .card { padding: 16px; }
      .page-card .name { font-size: 1.05rem; }
      .url-box { min-width: 0; font-size: .76rem; }
      .actions { gap: 8px; }
      .actions .act { flex: 1 1 auto; justify-content: center; }
      .grid2 { grid-template-columns: 1fr; }
      .savebar { flex-direction: column-reverse; gap: 8px; padding: 10px 14px; }
      .save-btn { width: 100%; padding: 14px; }
      .modal { padding: 20px 16px; border-radius: 14px; }
      .tabs { flex-direction: column; }
      .chip { flex-wrap: wrap; }
    }