:root {
  /* 極小ビューポートでレイアウトが潰れすぎないよう、ページ全体の最小幅（横スクロールになる） */
  --ck-site-min-width: 320px;

  /* 画面下端の予約（AdSense 等） */
  --ck-bottom-reserved: 30vh;
  /* ホバーナビ：下端からのオフセット（20% = 画面高の20%） */
  --ck-screen-nav-from-bottom: 20%;

  /* ブランドカラー（長時間利用向け・少し落ち着かせた紫） */
  --ck-primary: #8f1aa3;
  --ck-primary-light: #b14ac7;
  --ck-primary-soft: #f7e8fb;

  /* 主ボタンも同系統で統一 */
  --ck-accent: #8f1aa3;
  --ck-accent-hover: #731584;

  /* ベース */
  --ck-bg: #fbfafe;
  --ck-surface: #ffffff;
  --ck-surface-soft: #f8f4fb;
  --ck-surface-hover: #f4eef8;

  /* 文字 */
  --ck-text: #1f1f1f;
  --ck-text-sub: #2f2f2f;
  --ck-text-muted: #5a5a5a;

  /* 境界（少しだけ締める） */
  --ck-border: #d7cae3;
  --ck-border-light: #e7def0;
  --ck-border-strong: #bea8d4;

  /* 状態色（最小限） */
  --ck-danger: #b42318;
  --ck-danger-soft: #fff5f4;
  --ck-danger-border: #f0c4c1;

  --ck-warning: #8a5a12;
  --ck-warning-soft: #fbf4e7;

  /* success もブランド寄せ */
  --ck-success: var(--ck-primary);
  --ck-success-soft: #f4e5fa;
  --ck-success-border: #dcc0e8;

  /* RGB系 */
  --ck-white-rgb: 255, 255, 255;
  --ck-primary-rgb: 143, 26, 163;
  --ck-primary-light-rgb: 177, 74, 199;
  --ck-text-deep-rgb: 31, 31, 31;
  --ck-shadow-rgb: 17, 12, 24;

  /* 影 */
  --ck-shadow-card: 0 0.5rem 1.5rem rgba(var(--ck-shadow-rgb), 0.05);
  --ck-shadow-card-hover: 0 0.8rem 1.9rem rgba(var(--ck-shadow-rgb), 0.09);
  --ck-shadow-float: 0 0.35rem 0.9rem rgba(var(--ck-shadow-rgb), 0.08);
  --ck-shadow-float-hover: 0 0.5rem 1.05rem rgba(var(--ck-primary-rgb), 0.16);
  --ck-shadow-active: 0 0.4rem 1rem rgba(var(--ck-primary-rgb), 0.2);
  --ck-shadow-popover: 0 0.3rem 0.8rem rgba(var(--ck-shadow-rgb), 0.14);
  --ck-shadow-toast: 0 8px 30px rgba(var(--ck-text-deep-rgb), 0.14);

  /* 半透明背景 */
  --ck-header-bg: rgba(var(--ck-white-rgb), 0.94);
  --ck-header-border: rgba(215, 202, 227, 0.96);

  --ck-toast-bg: rgba(var(--ck-white-rgb), 0.82);
  --ck-toast-border: rgba(223, 215, 234, 0.95);
  --ck-toast-success-bg: rgba(244, 229, 250, 0.9);
  --ck-toast-success-border: rgba(220, 192, 232, 0.95);
  --ck-toast-error-bg: rgba(255, 245, 244, 0.9);
  --ck-toast-error-border: rgba(240, 196, 193, 0.95);

  /* hover / focus */
  --ck-focus-ring: 0 0 0 0.24rem rgba(var(--ck-primary-light-rgb), 0.22);
  --ck-hover-soft-bg: #efe3f6;
  --ck-split-band-border: #d8bfe5;
  --ck-selected-row-bg: #f1def7;

  /* 共通角丸 */
  --ck-radius-card: 1rem;
  --ck-radius-soft: 0.9rem;
  --ck-radius-pill: 9999px;

  /* Bootstrap 未上書き時の枠線・ホバー行（アプリ色に合わせる） */
  --ck-bs-border-fallback: var(--ck-border);
  --ck-bs-secondary-bg-fallback: var(--ck-surface-soft);

  /* 按分「上書き」強調（明細のマーク用） */
  --ck-split-override-mark: #b45309;

  --ck-on-primary: #ffffff;
}

html,
body {
  min-height: 100%;
}

body.app-body {
  min-width: var(--ck-site-min-width);
  background: var(--ck-bg);
  color: var(--ck-text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
}

a {
  color: var(--ck-primary);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--ck-primary-light);
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

hr {
  border: 0;
  border-top: 1px solid var(--ck-border);
  opacity: 1;
}

/* 見出し */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--ck-text);
  line-height: 1.4;
}

.ck-section-title,
.ck-page-title,
.ck-subtitle {
  /* 見出しは紫を抑えて目に優しいグレーへ */
  color: var(--ck-text-sub);
}

/* 共通カード */
.ck-card,
.ck-header-groupbox,
.ck-form-wrap,
.ck-note-box,
.ck-maintenance-card {
  background: var(--ck-surface);
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-card);
  box-shadow: var(--ck-shadow-card);
}

.ck-soft-card {
  background: var(--ck-surface-soft);
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-card);
}

/* グループトップ：年月切り替え付き利用状況チャート（YYYY-MM） */
.ck-group-year-bar-card.ck-group-spend-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.ck-group-spend-card .ck-group-spend-ym-input {
  min-width: 11rem;
  max-width: 12rem;
}

/*
 * 棒／円の切替でレイアウトがガタつかないよう、先にスロットを取り、その内側に描画する。
 * 年間棒・ドーナツともスロットの高さを JS で「幅の半分」にし、canvas は Chart 非 responsive でピクセル指定。
 */
.ck-group-chart-plot-slot {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  flex-shrink: 0;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  box-sizing: border-box;
}

.ck-group-chart-plot-slot--year-bar {
  height: auto;
}

/* 年間棒: スロットの高さは JS（幅の半分）。内側は absolute で敷き詰める */
.ck-group-year-bar-plot-inner {
  position: absolute;
  inset: 0;
  min-width: 0;
  min-height: 0;
}

.ck-group-year-bar-chart-host {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

#ck-group-year-bar-canvas {
  display: block;
  cursor: pointer;
}

.ck-group-chart-plot-slot--doughnut .ck-group-chart-plot-slot-inner {
  position: absolute;
  inset: 0;
  width: auto;
  height: auto;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  box-sizing: border-box;
  padding: 0.25rem;
}

/* ドーナツ: 枠より小さい正方形 canvas を中央に（横長枠のとき左寄せにならないように） */
.ck-group-chart-plot-slot--doughnut .ck-group-spend-chart-wrap {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  /* .ck-group-spend-chart-wrap 共通の aspect-ratio / max-width:320px と競合させない */
  aspect-ratio: unset;
}

/* スロット外では従来どおり（他ページで使う場合のフォールバック） */
.ck-group-spend-chart-wrap {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  height: auto;
  min-width: 0;
  position: relative;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  box-sizing: border-box;
}

/* flex 内のチャートHost：子のcanvasが親を膨らませないようにする */
.ck-group-spend-chart-host {
  min-width: 0;
  overflow: hidden;
}

.ck-group-chart-plot-slot--doughnut .ck-group-spend-chart-host {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
}

/* ドーナツ中央の合計（Canvas 上に重ね、ポインタは下の canvas のみ命中） */
.ck-group-spend-center-block {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  transform: translate(-50%, -50%);
  pointer-events: none;
  text-align: center;
  line-height: 1.25;
  padding: 0.3rem 0.65rem;
  border-radius: var(--ck-radius-pill);
  background: rgba(var(--ck-white-rgb), 0.94);
  border: 1px solid var(--ck-border-light);
  box-shadow: 0 0.08rem 0.35rem rgba(var(--ck-shadow-rgb), 0.06);
}

.ck-group-spend-center-amount {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

#ck-group-spend-chart-canvas {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
}

.ck-group-chart-plot-slot--doughnut #ck-group-spend-chart-canvas {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  flex-shrink: 0;
}

/* 年間棒：◁2026年▷ ステッパー */
.ck-group-year-bar-card .ck-year-bar-year-stepper {
  flex-wrap: nowrap;
  column-gap: 0.15rem;
}

.ck-group-year-bar-card .ck-year-bar-year-label {
  min-width: 4.75rem;
  padding: 0 0.1rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
}

.ck-group-year-bar-card .ck-year-bar-year-nav {
  min-width: 2.35rem;
  padding: 0.2rem 0.4rem;
  line-height: 1.25;
}

/* 年間棒：ホバー中の月・合計（フェードはドーナツの内訳表示と同様） */
.ck-group-year-bar-card .ck-year-bar-hover-total {
  max-width: 22rem;
  line-height: 1.45;
  min-height: 2.6rem;
  opacity: 1;
  transition: opacity 0.22s ease-in-out;
}

.ck-group-year-bar-card .ck-year-bar-hover-total.ck-year-bar-hover-total--out {
  opacity: 0;
}

/* flex 行内でチャート列が min-content で横に膨らみ続けないようにする */
.ck-group-charts-row {
  min-width: 0;
}

/* 対象月フォームの下：ホバーでカテゴリ内訳（フェード切り替え） */
.ck-group-spend-card .ck-group-spend-detail {
  max-width: 22rem;
  line-height: 1.45;
  min-height: 2.6rem;
  opacity: 1;
  transition: opacity 0.22s ease-in-out;
}

.ck-group-spend-card .ck-group-spend-detail.ck-spend-detail--out {
  opacity: 0;
}

.ck-chip,
.ck-step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ck-primary-soft);
  color: var(--ck-primary);
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-pill);
  font-weight: 700;
}

.ck-chip {
  padding: 0.5rem 0.85rem;
  margin: 0.25rem;
}

.ck-step-badge {
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  line-height: 1.2;
}

/* テキスト補助 */
.ck-note {
  color: var(--ck-text-muted);
  font-size: 0.95rem;
}

.ck-text-muted {
  color: var(--ck-text-muted);
}

.ck-text-sub {
  color: var(--ck-text-sub);
}

.ck-bg-surface {
  background-color: var(--ck-surface) !important;
}

/* リード文・注釈の最大幅（中央寄せ） */
.ck-prose-wide {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.ck-prose-narrow {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.ck-lp-section-narrow {
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}

.ck-lp-text-block {
  line-height: 1.9;
}

.ck-lp-list li + li {
  margin-top: 0.5rem;
}

/* ボタン */
.btn-ck-primary {
  background: var(--ck-accent);
  border-color: var(--ck-accent);
  color: var(--ck-on-primary);
  font-weight: 700;
}

.btn-ck-primary:hover,
.btn-ck-primary:focus,
.btn-ck-primary:active {
  background: var(--ck-accent-hover);
  border-color: var(--ck-accent-hover);
  color: var(--ck-on-primary);
}

.btn-ck-secondary {
  background: var(--ck-surface);
  border: 1px solid var(--ck-border-strong);
  color: var(--ck-primary);
  font-weight: 700;
}

.btn-ck-secondary:hover,
.btn-ck-secondary:focus,
.btn-ck-secondary:active {
  background: var(--ck-hover-soft-bg);
  border-color: var(--ck-primary-light);
  color: var(--ck-primary);
}

/* Bootstrap：アウトラインプライマリをサイトの紫に合わせる */
.app-body .btn-outline-primary {
  --bs-btn-color: var(--ck-primary);
  --bs-btn-border-color: var(--ck-primary-light);
  --bs-btn-hover-color: var(--ck-on-primary);
  --bs-btn-hover-bg: var(--ck-primary);
  --bs-btn-hover-border-color: var(--ck-primary);
  --bs-btn-active-color: var(--ck-on-primary);
  --bs-btn-active-bg: var(--ck-accent-hover);
  --bs-btn-active-border-color: var(--ck-accent-hover);
  --bs-btn-disabled-color: var(--ck-text-muted);
  --bs-btn-disabled-border-color: var(--ck-border-strong);
}

/* フォーム */
.ck-form-label {
  font-weight: 700;
  color: var(--ck-text);
}

.form-control,
.form-select {
  border-color: var(--ck-border);
  color: var(--ck-text);
  background-color: var(--ck-surface);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--ck-primary-light);
  box-shadow: var(--ck-focus-ring);
}

/* ラベルと入力を横並び（幅比 約 2:10）。狭い画面では縦積み */
/* タブレット未満の横並び（sm〜md未満）: ラベル:入力 = 2:10 */
.ck-label-input-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 10fr);
  gap: 0.35rem 0.75rem;
  align-items: center;
}

/* タブレット幅以上（md〜）: ラベル:入力 = 1:11 */
@media (min-width: 768px) {
  .ck-label-input-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 11fr);
  }
}

.ck-label-input-row > .form-label,
.ck-label-input-row > label.form-label {
  margin-bottom: 0;
}

.ck-label-input-row > :nth-child(2) {
  min-width: 0;
}

/*
 * ラベル＋入力の標準（Bootstrap グリッドのみ・カスタム幅なし）
 * 全幅行: ラベル col-2 col-md-2 col-lg-1 col-form-label ck-form-label / 入力側 col-10 col-md-10 col-lg-11
 * col-6 内（同一行に開始・終了など）: ラベル col-4 col-md-4 col-lg-2 / 入力 col-8 col-md-8 col-lg-10
 * .ck-label-input-row は全幅で横並び: md 未満 2:10、md〜 1:11
 */

/* メッセージ */
.app-message {
  border-radius: var(--ck-radius-card);
  padding: 1rem;
  margin-bottom: 1rem;
}

.app-message--error {
  border: 1px solid var(--ck-danger-border);
  background: var(--ck-danger-soft);
  color: var(--ck-danger);
}

.app-message--success {
  border: 1px solid var(--ck-success-border);
  background: var(--ck-success-soft);
  color: var(--ck-success);
}

.app-message--info {
  border: 1px solid var(--ck-border);
  background: var(--ck-primary-soft);
  color: var(--ck-text);
}

/* Bootstrap：成功アラートをブランド系に寄せる */
.app-body .alert-success {
  background-color: var(--ck-primary-soft);
  border-color: var(--ck-border);
  color: var(--ck-text);
}

/* ステータス */
.ck-status-badge {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border-radius: var(--ck-radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
}

.ck-status-badge--unsettled {
  background: var(--ck-warning-soft);
  color: var(--ck-warning);
}

.ck-status-badge--settled {
  background: var(--ck-primary-soft);
  color: var(--ck-primary);
}

/* 精算ステータス：バッジ＋ホバーで精算名・リンク（明細一覧・支払履歴で共用） */
.ck-tx-status-wrap {
  position: relative;
  z-index: 1;
}

.ck-tx-status-wrap:hover,
.ck-tx-status-wrap:focus-within {
  z-index: 10;
}

.ck-tx-status-hover {
  display: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 100%;
  margin-top: 0.2rem;
  padding: 0.4rem 0.65rem;
  background: var(--ck-surface);
  border: 1px solid var(--bs-border-color, var(--ck-bs-border-fallback));
  border-radius: 0.35rem;
  box-shadow: var(--ck-shadow-popover);
  white-space: nowrap;
  font-size: 0.8125rem;
  line-height: 1.35;
  min-width: max-content;
  max-width: min(90vw, 20rem);
  text-align: center;
}

.ck-tx-status-wrap:hover .ck-tx-status-hover,
.ck-tx-status-wrap:focus-within .ck-tx-status-hover {
  display: block;
}

.ck-tx-status-hover a {
  color: var(--ck-primary);
  font-weight: 700;
  word-break: break-all;
  white-space: normal;
  display: inline-block;
  max-width: 100%;
}

/* テーブル */
.ck-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 0.5rem;
  border: var(--bs-border-width, 1px) solid var(--bs-border-color, var(--ck-bs-border-fallback));
  background-color: var(--ck-surface);
}

.ck-table th,
.ck-table td {
  vertical-align: middle;
}

.ck-transaction-note {
  margin-top: 0.2rem;
  color: var(--ck-text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* レスポンシブ一覧 */
.ck-tx-list,
.ck-data-list {
  border: var(--bs-border-width, 1px) solid var(--bs-border-color, var(--ck-bs-border-fallback)) !important;
}

@media (min-width: 768px) {
  .ck-tx-list .row > [class*="col-md"]:not(:first-child),
  .ck-data-list .row > [class*="col-md"]:not(:first-child) {
    border-left: var(--bs-border-width, 1px) solid var(--bs-border-color, var(--ck-bs-border-fallback));
  }

  .ck-tx-list .row > [class*="col-md"],
  .ck-data-list .row > [class*="col-md"] {
    padding-left: 0.35rem;
    padding-right: 0.35rem;
  }
}

.ck-tx-list .transaction-view-row:last-child,
.ck-data-list .ck-data-list-row:last-child {
  border-bottom: 0 !important;
}

.ck-data-list .ck-data-list-row:hover,
.ck-tx-list .transaction-view-row.ck-tx-row-open-detail:hover {
  background-color: var(--bs-secondary-bg, var(--ck-bs-secondary-bg-fallback));
}

/* 編集パネル */
.ck-edit-panel,
.ck-selection-bar,
.ck-split-member-card,
.ck-next-step-item,
.ck-mini-card,
.ck-member-row,
.ck-category-weight-row {
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-soft);
  background: var(--ck-surface);
}

.ck-edit-panel {
  background: var(--ck-surface-hover);
  border-color: var(--ck-border-light);
  padding: 1rem;
}

.ck-selection-bar,
.ck-split-member-card,
.ck-next-step-item,
.ck-mini-card,
.ck-member-row,
.ck-category-weight-row {
  padding: 0.9rem 1rem;
}

.ck-split-member-card {
  height: 100%;
}

.ck-split-member-name {
  font-weight: 700;
  color: var(--ck-text);
  margin-bottom: 0.75rem;
}

/* 按分パネル */
.ck-split-band {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  background: var(--ck-primary-soft);
  border: 1px solid var(--ck-split-band-border);
  border-radius: var(--ck-radius-soft);
  color: var(--ck-primary);
  font-weight: 700;
}

.ck-split-band:hover,
.ck-split-band:focus {
  background: var(--ck-hover-soft-bg);
  color: var(--ck-primary);
}

.split-override-body {
  display: none;
  margin-top: 1rem;
}

.split-override-icon-open {
  display: none;
}

.split-value-input[disabled] {
  display: none;
}

/* ページ補助 */
.app-page {
  padding-top: 1rem;
  padding-bottom: 2rem;
}

/* サイトレイアウト（layouts/default） */
.ck-site-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.ck-main {
  flex: 1 0 auto;
}

.ck-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--ck-header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ck-header-border);
}

/* 全ページ共通：ヘッダー直下のトースト */
.ck-app-toast-host {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--ck-app-toast-top, 5.5rem);
  z-index: 1040;
  display: flex;
  justify-content: center;
  padding: 0 1rem max(0.35rem, env(safe-area-inset-bottom, 0px));
  pointer-events: none;
}

.ck-app-toast-host:not([hidden]) {
  pointer-events: auto;
}

.ck-app-toast {
  max-width: 36rem;
  width: 100%;
  margin: 0 auto;
  padding: 0.55rem 1.15rem;
  border-radius: var(--ck-radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
  letter-spacing: 0.01em;
  box-shadow: var(--ck-shadow-toast);
  border: 1px solid var(--ck-toast-border);
  background: var(--ck-toast-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--ck-text);
}

.ck-app-toast--success {
  border-color: var(--ck-toast-success-border);
  background: var(--ck-toast-success-bg);
  color: var(--ck-success);
}

.ck-app-toast--error {
  border-color: var(--ck-toast-error-border);
  background: var(--ck-toast-error-bg);
  color: var(--ck-danger);
}

.ck-header-inner {
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

/* タイトルとメニューを1行：左は固定幅相当、右は残り幅で横スクロール */
.ck-header-bar {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.ck-header-bar-brand {
  flex: 0 0 auto;
}

.ck-header-bar-menu {
  flex: 1 1 0;
  min-width: 0;
}

.ck-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ck-text);
}

.ck-brand-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  font-size: 1.5rem;
  line-height: 1.15;
  text-align: center;
}

.ck-brand:hover,
.ck-brand:focus {
  color: var(--ck-text);
}

.group-protected-icon {
  /* 紫の反対色っぽい、淡い暗めの黄色 */
  color: #a67a1e;
}

.group-unlocked-icon {
  color: #c2c2c8;
}

.ck-brand-title {
  font-size: 1em;
  font-weight: 900;
  color: var(--ck-primary);
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.ck-brand-subtitle {
  margin: 0;
  font-size: 0.32em;
  font-weight: 700;
  color: var(--ck-text-muted);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.ck-header-groupbox {
  min-width: 0;
  padding: 0.9rem 1rem;
}

.ck-group-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.55rem;
  justify-content: flex-start;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ck-nav-link--settings {
  margin-left: auto;
}

.ck-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-height: 42px;
  padding: 0.6rem 1rem;
  border-radius: var(--ck-radius-pill);
  border: 1px solid var(--ck-border-strong);
  background: var(--ck-surface);
  color: var(--ck-primary);
  font-weight: 800;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.ck-nav-link:hover,
.ck-nav-link:focus {
  background: var(--ck-hover-soft-bg);
  color: var(--ck-primary);
  border-color: var(--ck-primary-light);
}

.ck-header .ck-nav-link {
  /* ヘッダー内メニューの枠線を紫寄りからニュートラルへ（目の疲れ軽減） */
  border-color: rgba(var(--ck-text-deep-rgb), 0.12);
}

.ck-header .ck-nav-link:hover,
.ck-header .ck-nav-link:focus {
  border-color: rgba(var(--ck-text-deep-rgb), 0.18);
}

.ck-nav-link.is-active {
  background: var(--ck-primary);
  color: var(--ck-on-primary);
  border-color: var(--ck-primary);
  box-shadow: var(--ck-shadow-active);
}

.ck-nav-link.is-active:hover,
.ck-nav-link.is-active:focus {
  background: var(--ck-primary);
  color: var(--ck-on-primary);
  border-color: var(--ck-primary);
}

/* グループ画面：下端から20%付近・左右端の順番移動（ホバーで強調） */
.ck-screen-edge-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: var(--ck-screen-nav-from-bottom);
  top: auto;
  z-index: 1040;
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  max-width: none;
  box-sizing: border-box;
  padding-left: max(0.5rem, env(safe-area-inset-left));
  padding-right: max(0.5rem, env(safe-area-inset-right));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  transform: none;
  pointer-events: none;
}

.ck-screen-edge-nav.is-hidden,
.ck-screen-edge-nav[hidden] {
  display: none !important;
}

.ck-screen-edge-nav__btn {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  min-height: 2.75rem;
  padding: 0.4rem 0.65rem;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--ck-primary);
  background: rgba(var(--ck-white-rgb), 0.96);
  border: 1px solid var(--ck-border-strong);
  box-shadow: var(--ck-shadow-float);
  text-decoration: none;
  transition:
    opacity 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.ck-screen-edge-nav__btn--prev {
  border-radius: 0 0.75rem 0.75rem 0;
}

.ck-screen-edge-nav__btn--next {
  border-radius: 0.75rem 0 0 0.75rem;
}

.ck-screen-edge-nav__chev {
  font-size: 1.35rem;
  line-height: 1;
  font-weight: 800;
  opacity: 0.95;
}

.ck-screen-edge-nav__text {
  max-width: 5.5rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (hover: hover) {
  .ck-screen-edge-nav__btn {
    opacity: 0.46;
  }

  .ck-screen-edge-nav__btn:hover,
  .ck-screen-edge-nav__btn:focus-visible {
    opacity: 1;
    background: var(--ck-surface);
    border-color: var(--ck-primary-light);
    box-shadow: var(--ck-shadow-float-hover);
    color: var(--ck-primary);
    outline: none;
  }
}

@media (hover: none) {
  .ck-screen-edge-nav__btn {
    opacity: 0.92;
  }
}

.ck-footer {
  flex-shrink: 0;
  margin-top: 2rem;
  border-top: 1px solid var(--ck-border);
  background: var(--ck-surface);
}

.ck-footer-inner {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.ck-footer-nav {
  max-width: 56rem;
  margin-left: auto;
  margin-right: auto;
}

.ck-footer-main-row {
  --bs-gutter-x: 0.5rem;
}

.ck-footer-main-row > [class*="col-"] {
  min-width: 0;
}

.ck-footer-links-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ck-footer-links-list a {
  display: block;
  padding: 0.28rem 0.45rem;
  margin-left: -0.45rem;
  margin-right: -0.45rem;
  border-radius: 0.4rem;
  color: var(--ck-text-sub);
  font-size: clamp(0.72rem, 0.28rem + 1.5vw, 0.82rem);
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.12s ease, color 0.12s ease;
  overflow-wrap: break-word;
}

.ck-footer-links-list a:hover,
.ck-footer-links-list a:focus-visible {
  background: var(--ck-surface-hover);
  color: var(--ck-primary);
  outline: none;
}

.ck-footer-links-list a:focus-visible {
  box-shadow: var(--ck-focus-ring);
}

.ck-footer-divider {
  max-width: 56rem;
  margin: 0.85rem auto 0.65rem;
  height: 1px;
  background: var(--ck-border-light);
  border: 0;
}

@media (max-width: 991.98px) {
  .ck-header-inner {
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
  }

  .ck-header-groupbox {
    padding: 0.85rem 0.9rem;
  }

  .ck-group-nav {
    gap: 0.45rem;
  }

  .ck-nav-link {
    min-height: 36px;
    padding: 0.42rem 0.75rem;
    font-size: 0.86rem;
  }

  .ck-settlement-summary-sticky {
    position: static;
  }

  .ck-split-desktop-head {
    display: none;
  }

  .ck-page-hero {
    padding: 1.5rem 0 1rem;
  }

  .ck-hero {
    padding: 3rem 0 2rem;
  }
}

@media (max-width: 575.98px) {
  .ck-header-inner {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }

  .ck-header-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
  }

  .ck-header-bar-brand {
    display: flex;
    justify-content: center;
  }

  .ck-header-bar-menu {
    width: 100%;
  }

  .ck-header-groupbox {
    padding: 0.65rem 0.7rem;
    border-radius: 0.8rem;
  }

  .ck-brand-stack {
    font-size: 1.28rem;
  }

  .ck-nav-link {
    min-height: 34px;
    padding: 0.4rem 0.7rem;
    font-size: 0.84rem;
  }

  .ck-group-nav {
    gap: 0.35rem;
  }

  .ck-group-nav .ck-nav-link--settings {
    margin-left: auto;
  }

  .app-page {
    padding-top: 0.75rem;
    padding-bottom: 1.5rem;
  }

  .ck-error-card {
    padding: 1.5rem 1rem;
  }

  .ck-error-title {
    font-size: 1.25rem;
  }

  .ck-error-actions {
    flex-direction: column;
  }

  .ck-error-actions .btn {
    width: 100%;
  }
}

@media (min-width: 992px) {
  .ck-split-mobile-toggle {
    display: none !important;
  }

  .ck-split-desktop-head {
    display: block;
  }

  /* 新規フォーム：帯ボタンを隠す代わりに按分エリアを常時表示 */
  .split-override-section .split-override-body {
    display: block;
  }
}

/* トップ（index） */
.ck-hero {
  padding: 4rem 0 3rem;
}

.ck-hero-title {
  color: var(--ck-primary);
  line-height: 1.2;
}

.ck-brand-line,
.ck-page-lead {
  color: var(--ck-text-muted);
}

.ck-soft-section {
  background: var(--ck-surface-soft);
  border-radius: 1.25rem;
}

.ck-icon,
.ck-action-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ck-primary-soft);
  color: var(--ck-primary);
  font-weight: 700;
}

.ck-icon {
  width: 72px;
  height: 72px;
  border-radius: 1.25rem;
  font-size: 1.5rem;
}

.ck-action-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--ck-radius-card);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.ck-cta-box {
  background: linear-gradient(180deg, var(--ck-surface) 0%, var(--ck-surface-soft) 100%);
  border: 1px solid var(--ck-border);
  border-radius: 1.25rem;
}

.ck-anchor {
  scroll-margin-top: 2rem;
}

.ck-compare th,
.ck-compare td,
.ck-compact-table th,
.ck-compact-table td {
  vertical-align: middle;
}

.ck-compact-table th,
.ck-compact-table td {
  font-size: 0.95rem;
}

/* グループトップ */
.ck-action-card {
  height: 100%;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.ck-action-card:hover,
.ck-action-card:focus {
  color: inherit;
  transform: translateY(-2px);
  box-shadow: var(--ck-shadow-card-hover);
}

.ck-action-card-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.ck-action-card-head .ck-action-icon {
  margin-bottom: 0;
  flex-shrink: 0;
}

.ck-summary-value,
.ck-summary-stat-value {
  font-weight: 800;
  line-height: 1.3;
}

.ck-summary-value {
  font-size: 1.15rem;
}

.ck-summary-stat {
  text-align: center;
}

.ck-summary-stat-value {
  font-size: 1.4rem;
}

.ck-settlement-name-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.ck-icon-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  border-radius: 0;
  color: var(--ck-text-muted, #6c757d);
  line-height: 0;
  cursor: pointer;
}

.ck-icon-btn-ghost:hover,
.ck-icon-btn-ghost:focus-visible {
  background: transparent;
  color: var(--ck-text, #212529);
  outline: none;
  box-shadow: none;
}

.ck-bs-icon-img {
  display: block;
  vertical-align: middle;
}

.ck-settlement-rename-input {
  font-weight: 800;
  font-size: 1.15rem;
}

.ck-settlement-rename-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.ck-next-step-list,
.ck-mini-list {
  display: grid;
  gap: 0.75rem;
}

.ck-share-link {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  word-break: break-all;
}

.ck-copy-status {
  min-height: 1.5rem;
}

/* 設定・精算結果（開閉パネル共通） */
.ck-accordion-card,
.ck-detail-toggle {
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-card);
  background: var(--ck-surface);
  overflow: hidden;
}

.ck-accordion-card + .ck-accordion-card,
.ck-detail-toggle + .ck-detail-toggle {
  margin-top: 1rem;
}

.ck-accordion-card summary,
.ck-detail-toggle summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.1rem;
  background: var(--ck-surface-soft);
  color: var(--ck-primary);
  font-weight: 800;
  border-bottom: 1px solid transparent;
}

.ck-accordion-card summary::-webkit-details-marker,
.ck-detail-toggle summary::-webkit-details-marker {
  display: none;
}

.ck-accordion-card[open] summary,
.ck-detail-toggle[open] summary {
  border-bottom-color: var(--ck-border);
}

.ck-accordion-body,
.ck-detail-toggle-body {
  padding: 1rem;
}

/* 精算 */
.settlement-row,
.transaction-view-row.ck-tx-row-open-detail {
  cursor: pointer;
}

.ck-settlement-summary-card .fs-4 {
  line-height: 1.2;
}

.ck-settlement-summary-sticky {
  position: sticky;
  top: 5.5rem;
  z-index: 10;
}

/* 未精算明細一覧 */
.ck-settlement-amount-col,
.ck-amount-cell,
.ck-date-cell,
.ck-status-cell,
.ck-action-cell,
.ck-result-table td,
.ck-result-table th {
  white-space: nowrap;
}

.ck-settlement-amount-col {
  min-width: 12ch;
  flex-shrink: 0;
}

.settlement-row--selected td {
  background: var(--ck-selected-row-bg);
}

/* 明細ページ */
.ck-page-hero {
  padding: 2rem 0 1.5rem;
}

.ck-entry-main-card,
.ck-list-card {
  height: 100%;
}

.ck-entry-main-card .form-control,
.ck-entry-main-card .form-select {
  min-height: 44px;
}

.ck-title-cell {
  min-width: 0;
}

.ck-inline-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.transaction-view-row.ck-tx-row-open-detail:focus-visible {
  outline: 2px solid var(--ck-primary);
  outline-offset: -2px;
}

#ckTxDetailModal .modal-body {
  min-width: 0;
}

#ckTxDetailModal .ck-split-detail-list li + li {
  margin-top: 0.35rem;
}

.ck-tx-detail-note {
  white-space: pre-wrap;
  line-height: 1.5;
}

.ck-tx-split-mark {
  font-weight: 700;
  font-size: 0.75rem;
  line-height: 1.2;
  color: var(--ck-primary);
}

.ck-tx-split-mark--override {
  color: var(--ck-split-override-mark);
  font-weight: 800;
}

.ck-tx-split-mark--std {
  color: var(--ck-text-muted);
  font-weight: 600;
}

.ck-table-title,
.ck-mini-card-title {
  font-weight: 800;
}

.ck-table-title {
  font-size: 0.95rem;
  color: var(--ck-primary);
  margin-bottom: 0.65rem;
}

.ck-mini-card-title {
  margin-bottom: 0.35rem;
  color: var(--ck-text);
}

/* 404 */
.ck-error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.ck-error-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.ck-error-code {
  margin: 0;
  font-size: clamp(3.8rem, 16vw, 6.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ck-primary);
}

.ck-error-title {
  margin: 1rem 0 0.75rem;
  color: var(--ck-text);
  font-size: 1.5rem;
  font-weight: 800;
}

.ck-error-text {
  max-width: 32rem;
  margin: 0 auto;
  color: var(--ck-text-muted);
  line-height: 1.8;
}

.ck-error-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.ck-error-help {
  margin-top: 1.5rem;
  text-align: left;
}

/* 記事一覧 */
.ck-article-index-page .breadcrumb-item a {
  text-decoration: none;
}

.ck-article-index-page .breadcrumb-item.active {
  color: var(--ck-text-muted);
}

.ck-article-index-nav .btn-outline-secondary {
  --bs-btn-color: var(--ck-primary);
  --bs-btn-border-color: var(--ck-border);
  --bs-btn-hover-color: var(--ck-primary);
  --bs-btn-hover-bg: var(--ck-surface-soft);
  --bs-btn-hover-border-color: var(--ck-primary);
}

.ck-article-featured-card {
  background: var(--ck-surface);
  border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-card);
  box-shadow: var(--ck-shadow-card);
  padding: 1rem 1.1rem;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.ck-article-featured-card:hover {
  border-color: color-mix(in srgb, var(--ck-primary) 35%, var(--ck-border));
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.ck-article-featured-card:focus-visible {
  outline: 2px solid var(--ck-primary);
  outline-offset: 2px;
}

.ck-article-featured-badge {
  display: inline-block;
  color: var(--ck-primary);
  font-weight: 600;
}

.ck-article-featured-title {
  color: var(--ck-primary);
  line-height: 1.45;
}

.ck-article-featured-more {
  color: var(--ck-primary);
  font-weight: 600;
}

.ck-article-card {
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ck-article-card:hover {
  border-color: color-mix(in srgb, var(--ck-primary) 30%, var(--ck-border));
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.ck-article-card:focus-visible {
  outline: 2px solid var(--ck-primary);
  outline-offset: 2px;
}

.ck-article-card-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--ck-surface-soft);
  border: 1px solid var(--ck-border);
  color: var(--ck-text-muted);
  font-weight: 600;
}

.ck-article-card-title {
  color: var(--ck-text);
  line-height: 1.45;
}

.ck-article-card:hover .ck-article-card-title {
  color: var(--ck-primary);
}

.ck-article-card-more {
  color: var(--ck-primary);
  font-weight: 600;
}

/* 記事一覧（旧クラス互換） */
.ck-article-list-title {
  color: var(--ck-primary);
}

.ck-article-list-title:hover {
  color: var(--ck-accent-hover);
}

/* 記事本文（FAQ / about の ck-card 内トーンに合わせる） */
.ck-article-page .breadcrumb-item a {
  text-decoration: none;
}

.ck-article-page .breadcrumb-item.active {
  color: var(--ck-text-muted);
}

.ck-article-body {
  line-height: 1.75;
}

/* FAQ の ck-card 内と同じ基準：本文は ck-note と同じ 0.95rem（子要素も明示） */
.ck-article {
  color: var(--ck-text-muted);
  font-size: 0.95rem;
}

.ck-article p,
.ck-article li,
.ck-article td,
.ck-article th {
  font-size: 0.95rem;
}

/* 本文 h1：文字は通常色＋左にテーマ色の見出しマーク */
.ck-article h1 {
  position: relative;
  margin-top: 0;
  margin-bottom: 0.75rem;
  padding-left: 0.85rem;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ck-text);
  letter-spacing: -0.01em;
}

.ck-article h1::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.1em;
  bottom: 0.1em;
  width: 0.3rem;
  border-radius: 0.15rem;
  background: linear-gradient(
    180deg,
    var(--ck-primary-light) 0%,
    var(--ck-primary) 100%
  );
}

/* 本文 h2：文字はサブトーン＋下線をテーマカラー（帯状） */
.ck-article h2 {
  margin-top: 0;
  margin-bottom: 0.65rem;
  padding-bottom: 0.45rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ck-text-sub);
  letter-spacing: -0.01em;
  border-bottom: 2px solid var(--ck-primary);
}

.ck-article h2:not(:first-child) {
  margin-top: 1.75rem;
}

/* h3 / h4：色は本文寄り、左に細いアクセントのみ */
.ck-article h3 {
  position: relative;
  margin-top: 0;
  margin-bottom: 0.45rem;
  padding-left: 0.65rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ck-text-sub);
  letter-spacing: -0.01em;
}

.ck-article h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 0.15rem;
  border-radius: 0.08rem;
  background: var(--ck-primary-light);
  opacity: 0.85;
}

.ck-article h4 {
  position: relative;
  margin-top: 0;
  margin-bottom: 0.35rem;
  padding-left: 0.55rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ck-text-muted);
}

.ck-article h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 0.12rem;
  border-radius: 0.06rem;
  background: var(--ck-border);
}

.ck-article h3:not(:first-child) {
  margin-top: 1.35rem;
}

.ck-article h4:not(:first-child) {
  margin-top: 1.05rem;
}

.ck-article p {
  margin-bottom: 0.9rem;
}

.ck-article ul,
.ck-article ol {
  margin-bottom: 0.9rem;
  padding-left: 1.25rem;
}

.ck-article li {
  margin-bottom: 0.35rem;
}

.ck-article li::marker {
  color: var(--ck-text-muted);
}

.ck-article strong {
  color: var(--ck-text);
  font-weight: 700;
}

/* グローバル a と同じ（FAQ 本文リンク） */
.ck-article a {
  text-decoration: none;
}

.ck-article hr {
  border: 0;
  border-top: 1px solid var(--ck-border);
  margin: 1.5rem 0;
  opacity: 1;
}

.ck-article blockquote {
  margin: 1rem 0;
  padding: 0.85rem 1rem 0.85rem 1rem;
  border-left: 3px solid var(--ck-border);
  border-radius: 0 0.35rem 0.35rem 0;
  background: var(--ck-surface-soft);
  color: var(--ck-text-muted);
  font-size: 0.92rem;
}

.ck-article img {
  max-width: 100%;
  height: auto;
  border-radius: var(--ck-radius-card);
  border: 1px solid var(--ck-border-light);
  margin: 0.5rem 0 1rem;
}

.ck-article table {
  width: 100%;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  border-collapse: collapse;
  border: 1px solid var(--ck-border);
  border-radius: 0.5rem;
  overflow: hidden;
}

.ck-article th,
.ck-article td {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--ck-border-light);
  vertical-align: top;
}

.ck-article th {
  background: var(--ck-surface-soft);
  color: var(--ck-text);
  font-weight: 700;
  text-align: left;
}

.ck-article tr:last-child td {
  border-bottom: none;
}

.ck-article code {
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
  background: var(--ck-surface-soft);
  border: 1px solid var(--ck-border-light);
  color: var(--ck-text-sub);
}

.ck-article pre {
  padding: 0.85rem 1rem;
  border-radius: 0.5rem;
  background: var(--ck-surface-soft);
  border: 1px solid var(--ck-border-light);
  overflow-x: auto;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  line-height: 1.55;
}

.ck-article pre code {
  border: none;
  padding: 0;
  background: transparent;
  font-size: inherit;
}


/* コピーライト */
.ck-footer-copy {
  font-size: 0.8rem;
  color: #9ca3af;
  margin: 0;
}