body {
  --help-layer-marker-bg: #0f6bff;
  --help-layer-marker-color: #fff;
  --help-layer-accent: #0f6bff;
  /* 解説モード中は背面を薄く暗転＋カーソルを not-allowed にして「操作不能」を可視化 */
  --help-layer-overlay-bg: rgba(15, 23, 42, 0.12);
  --help-layer-overlay-cursor: not-allowed;

  margin: 0;
  font-family: sans-serif;
  background: #f5f6f8;
  color: #1f2933;
}

.demo-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  padding: 8px 16px;
  background: #1f2933;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  /* 解説モードのトグルはアプリのモーダル(z-index:1000)より上に置く */
  z-index: 2000;
}

.demo-app {
  max-width: 720px;
  margin: 72px auto 0;
  padding: 0 24px 40px;
  box-sizing: border-box;
}

.demo-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.demo-nav a {
  color: #1f2933;
  text-decoration: none;
  background: #e4e7eb;
  border-radius: 4px;
  padding: 7px 12px;
  font-size: 13px;
}

.demo-nav a[aria-current="page"] {
  background: #1f2933;
  color: #fff;
}

/* Language switcher (demo-only; pushed to the right end of the nav) */
.demo-lang {
  display: inline-flex;
  gap: 4px;
  margin-left: auto;
}

.demo-lang__btn {
  appearance: none;
  border: 1px solid #cbd2d9;
  background: #fff;
  color: #1f2933;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}

.demo-lang__btn[aria-pressed="true"] {
  background: #1f2933;
  color: #fff;
  border-color: #1f2933;
}

.demo-app h1 {
  font-size: 20px;
  margin-bottom: 4px;
}

/* Hero pitch under the page title (demo "value layer"). */
.demo-hero {
  margin: 0 0 24px;
  font-size: 14px;
  line-height: 1.5;
}

.demo-hero__tagline {
  display: block;
  font-weight: 600;
  color: #1f2933;
}

.demo-hero__hint {
  display: block;
  margin-top: 2px;
  color: #52606d;
}

.demo-card {
  background: #fff;
  padding: 16px 24px 24px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 24px;
}

.demo-card h2 {
  font-size: 15px;
  color: #52606d;
}

.demo-field {
  margin-bottom: 16px;
}

.demo-field label {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  color: #52606d;
}

.demo-field input {
  width: 100%;
  padding: 8px;
  border: 1px solid #cbd2d9;
  border-radius: 4px;
  font-size: 14px;
  box-sizing: border-box;
}

.demo-btn {
  padding: 8px 16px;
  background: #e4e7eb;
  color: #1f2933;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  margin-right: 8px;
}

.demo-btn--primary {
  background: #2563eb;
  color: #fff;
}

.demo-grid {
  display: grid;
  gap: 12px;
}

.demo-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.demo-toolbar .demo-btn {
  margin-right: 0;
}

.demo-meter {
  display: inline-block;
  margin-left: 8px;
  font-size: 13px;
  color: #52606d;
}

.demo-mini-label {
  display: inline-block;
  margin-right: 8px;
  font-size: 13px;
  color: #52606d;
}

.demo-mini-input {
  width: 180px;
  padding: 7px 8px;
  border: 1px solid #cbd2d9;
  border-radius: 4px;
  font-size: 14px;
  box-sizing: border-box;
}

.demo-log {
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid #cbd2d9;
  border-radius: 6px;
  background: #f8fafc;
}

.demo-log__title {
  font-size: 12px;
  color: #52606d;
  margin-bottom: 6px;
}

.demo-log ol {
  min-height: 22px;
  max-height: 110px;
  overflow: auto;
  margin: 0;
  padding-left: 20px;
  font-size: 12px;
  color: #1f2933;
}

.demo-log li {
  margin-bottom: 3px;
}

/* Diagnostics card: diagnose() summary table + CLI note */
.demo-diagnose {
  margin-top: 14px;
}

.demo-diagnose:empty {
  margin-top: 0;
}

.demo-diagnose__caption {
  margin: 0 0 8px;
  font-size: 12px;
  color: #52606d;
}

.demo-diagnose__table {
  border-collapse: collapse;
  font-size: 13px;
}

.demo-diagnose__table th,
.demo-diagnose__table td {
  border: 1px solid #cbd2d9;
  padding: 5px 12px;
  text-align: left;
}

.demo-diagnose__table th {
  background: #f1f5f9;
  color: #52606d;
  font-weight: 600;
}

.demo-diagnose__table td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.demo-cli-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: #52606d;
}

/* Placement playground (Customize card): live markerPlacement / popupPlacement */
.demo-placement {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.demo-placement__row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-placement__hint {
  margin: 2px 0 0;
  font-size: 13px;
  color: #52606d;
}

.demo-select {
  padding: 6px 8px;
  border: 1px solid #cbd2d9;
  border-radius: 4px;
  font-size: 13px;
  background: #fff;
  color: #1f2933;
}

/* 内側スクロールコンテナ（外側windowとは別にスクロールする） */
.demo-scroll {
  height: 160px;
  overflow: auto;
  border: 1px solid #cbd2d9;
  border-radius: 6px;
  padding: 12px;
}

.demo-spacer {
  height: 120px;
}

.demo-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}

.demo-list li {
  margin-bottom: 8px;
}

/* 画面下部の固定バー（position: fixed） */
.demo-fixedbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 24px;
  background: #1f2933;
  z-index: 5;
}

.demo-fixedbar .demo-btn {
  margin: 0;
}

/* モーダル（高いスタッキングコンテキスト） */
.demo-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.demo-modal[hidden] {
  display: none;
}

.demo-modal__panel {
  background: #fff;
  padding: 24px 32px;
  border-radius: 8px;
  width: 320px;
}