:root {
  color-scheme: light;

  /* マニュアル用カラー統一: 紺・青系に統一 */
  /* success(緑) → secondary(シアン青) */
  --gradient-success: linear-gradient(135deg, #0099cc 0%, #00b4e6 100%);
  --color-bg-success: #e6f7fc;

  /* warning(黄/オレンジ) → primary(紺) のライト版 */
  --gradient-warning: linear-gradient(135deg, #004077 0%, #0066bb 100%);
  --color-bg-warning: #e6edf6;

  /* danger(赤) → primary(紺) */
  --gradient-danger: linear-gradient(135deg, #004077 0%, #0077b6 100%);
  --color-bg-danger: #dde8f0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family:
    "Noto Sans JP",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  padding-top: 80px;
}

@media (max-width: 1024px) {
  body {
    padding-top: 60px;
  }

  .manual-sidenav {
    top: 0;
    height: 100vh;
  }
}

/* マニュアル サイドナビ（ドロワー形式） */

.manual-sidenav {
  position: fixed;
  /* top: 80px; */
  left: -220px; /* 初期状態は隠す */
  width: 220px;
  height: calc(100vh - 80px);
  background-color: var(--color-white);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  z-index: 200;
  padding: 16px 0 40px;
  transition: left 0.25s ease;
}

.manual-sidenav.is-open {
  left: 0;
}

/* トグルボタン */

.manual-sidenav-toggle {
  position: fixed;
  bottom: 24px;
  left: 0;
  z-index: 201;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  width: 28px;
  height: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 0 8px 8px 0;
  transition:
    left 0.25s ease,
    background-color 0.15s;
  padding: 0;
}

.manual-sidenav-toggle:hover {
  background-color: var(--color-secondary);
}

.manual-sidenav-toggle i {
  font-size: 0.6rem;
  transition: transform 0.25s ease;
}

.manual-sidenav-toggle__label {
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  line-height: 1;
}

.manual-sidenav-toggle.is-open {
  left: 220px;
}

.manual-sidenav-toggle.is-open i {
  transform: rotate(180deg);
}

/* オーバーレイ */

.manual-sidenav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
  background: transparent;
}

.manual-sidenav-overlay.is-open {
  display: block;
}

.manual-sidenav__header {
  padding: 8px 16px 12px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 8px;
}

.manual-sidenav__header a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.manual-sidenav__header a:hover {
  color: var(--color-secondary);
}

.manual-sidenav__group {
  margin-bottom: 4px;
}

.manual-sidenav__group-label {
  padding: 6px 16px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.manual-sidenav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  font-size: 0.8rem;
  color: var(--color-text);
  text-decoration: none;
  transition:
    background-color 0.15s,
    color 0.15s;
  line-height: 1.4;
}

.manual-sidenav__link i {
  width: 14px;
  font-size: 0.75rem;
  color: var(--color-text-light);
  flex-shrink: 0;
}

.manual-sidenav__link:hover {
  background-color: var(--color-bg);
  color: var(--color-secondary);
}

.manual-sidenav__link:hover i {
  color: var(--color-secondary);
}

.manual-sidenav__link--active {
  background-color: var(--color-bg);
  color: var(--color-secondary);
  font-weight: 600;
  border-left: 3px solid var(--color-secondary);
  padding-left: 13px;
}

.manual-sidenav__link--active i {
  color: var(--color-secondary);
}

/* マニュアル共通ナビゲーション */

.manual-nav {
  display: flex;
  justify-content: center;
  padding: 16px;
  background: transparent;
}

.manual-nav__container {
  width: 100%;
  max-width: 1280px;
  display: flex;
  justify-content: flex-start;
}

.manual-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-primary);
  background: var(--color-white);
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  padding: 8px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.12);
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.manual-nav__link i {
  font-size: 0.95rem;
}

.manual-nav__link:hover {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: rgba(29, 78, 216, 0.35);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.18);
}

.manual-nav__link:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.35);
  outline-offset: 2px;
}

/* 全体レイアウト */

.document {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 24px 16px 40px;
}

/* マニュアルカード（TOPページ用） */

.manual-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-white);
  border-radius: 16px;
  /* border: 1px solid rgba(15, 23, 42, 0.1); */
  box-shadow:
    0 4px 12px rgba(15, 23, 42, 0.08),
    0 2px 4px rgba(15, 23, 42, 0.04);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.manual-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.manual-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 12px 28px rgba(59, 130, 246, 0.15),
    0 4px 8px rgba(59, 130, 246, 0.08);
  /* border-color: rgba(59, 130, 246, 0.3); */
}

.manual-card:hover::before {
  opacity: 1;
}

.manual-card__icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 1.5rem;
  /* transition: transform 0.3s ease; */
}

.manual-card:hover .manual-card__icon {
  /* transform: scale(1.1) rotate(5deg); */
}

.manual-card__body {
  flex: 1;
  min-width: 0;
}

.manual-card__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.manual-card__description {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.manual-card__cta {
  flex-shrink: 0;
  font-size: 1.5rem;
  color: var(--color-border);
  transition: all 0.3s ease;
}

.manual-card:hover .manual-card__cta {
  color: var(--color-secondary);
  transform: translateX(4px);
}

/* ステップ番号バッジ */

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  margin-right: 8px;
}

.step-badge--success {
  background: var(--gradient-success);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.step-badge--warning {
  background: var(--gradient-warning);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.step-badge--danger {
  background: var(--gradient-danger);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* ビジュアル強化：情報ボックス */

.info-box {
  position: relative;
  padding: 16px 20px 16px 56px;
  margin: 16px 0;
  background: var(--color-info);
  /* border-left: 4px solid var(--color-secondary); */
}

.info-box::before {
  content: "\f05a";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--color-secondary);
}

.info-box--info {
  /* border-left-color: var(--color-accent); */
}

.info-box--info::before {
  color: var(--color-accent);
}

.info-box--success {
  border-left-color: var(--color-secondary);
  background: var(--color-bg-success);
}

.info-box--success::before {
  content: "\f058";
  color: var(--color-secondary);
}

.info-box--warning {
  border-left-color: var(--color-accent);
  background: var(--color-info);
}

.info-box--warning::before {
  content: "\f071";
  color: var(--color-accent);
}

.info-box--danger {
  border-left-color: var(--color-primary);
  background: var(--color-info);
}

.info-box--danger::before {
  content: "\f06a";
  color: var(--color-primary);
}

.slide-container {
  position: relative;
  width: 100%;
  max-width: 1280px;
  min-height: 720px;
  background-color: var(--color-bg);
  color: var(--color-primary);
  margin: 0 auto;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.2);
  border-radius: 4px;
}

.slide-container:not(.slide-toc) {
  padding: 120px 80px 60px 120px;
}

.slide-overview-padding {
  padding: 60px !important;
}

.header-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 16px;
  width: 100%;
  background-color: var(--color-primary);
}

.side-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 16px;
  height: 100%;
  background-color: var(--color-primary);
}

.version-tag {
  position: absolute;
  top: 32px;
  right: 40px;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}

.slide-container .footer {
  position: absolute;
  bottom: 16px;
  left: 40px;
  right: auto;
  color: var(--color-text-light);
  font-size: 12px;
}

.page-number {
  position: absolute;
  bottom: 16px;
  right: 40px;
  font-size: 14px;
  color: var(--color-text-light);
}

/* タイトル・表紙系 */

.title-section {
  margin-top: 50px;
  padding: 0 100px 0 50px;
}

.title {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--color-primary);
}

.title-cover {
  font-size: 52px;
}

.subtitle {
  font-size: 24px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 40px;
}

.title-underline {
  width: 120px;
  height: 4px;
  background-color: var(--color-primary);
  margin-top: 8px;
}

/* 表紙の情報欄 */

.info-section {
  padding: 0 120px 0 50px;
  margin-top: auto;
  margin-bottom: 60px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 12px;
}

.info-label {
  width: 120px;
  font-weight: 600;
  color: var(--color-primary);
  padding-top: 2px;
  font-size: 14px;
}

.info-content {
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
}

/* 表紙の箇条書きのズレ対策 */
.info-content ul {
  margin: 0;
  padding-left: 1.3rem;
}

.info-content li {
  margin-bottom: 4px;
}

/* 目次 */

.slide-toc {
  display: flex;
  flex-direction: row;
}

.left-section {
  width: 320px;
  padding: 140px 40px 60px 60px;
  position: relative;
  z-index: 1;
}

.right-section {
  flex: 1;
  padding: 120px 80px 60px 0;
  position: relative;
}

.title-toc {
  font-size: 40px;
}

.toc-hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--color-text-light);
}

.vertical-divider {
  position: absolute;
  top: 120px;
  bottom: 60px;
  left: 320px;
  width: 2px;
  background-color: var(--color-border);
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-item + .toc-item {
  margin-top: 12px;
}

/* 2カラムグリッド目次（margin-top をリセットして gap で統一） */
.toc-list--2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(8, auto);
  grid-auto-flow: column;
  gap: 8px 12px;
  align-items: stretch;
}
.toc-list--2col .toc-item,
.toc-list--2col .toc-item + .toc-item {
  margin-top: 0 !important;
}
.toc-list--2col .toc-link {
  height: 100%;
  box-sizing: border-box;
  /* Tailwind競合対策：ホバー時も背景・文字色を固定 */
  background: var(--color-white) !important;
  color: var(--color-primary) !important;
}
.toc-list--2col .toc-link:hover {
  background: var(--color-bg) !important;
  border-color: var(--color-secondary) !important;
  color: var(--color-primary) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 153, 204, 0.15) !important;
}
.toc-list--2col .toc-link:hover .toc-number {
  background-color: var(--color-secondary) !important;
  color: var(--color-white) !important;
  transform: scale(1.1);
}
.toc-list--2col .toc-link:hover .toc-arrow {
  color: var(--color-secondary) !important;
  transform: translateX(4px);
}

.toc-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

.toc-link:hover {
  background: var(--color-bg);
  border-color: var(--color-secondary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.15);
}

.toc-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toc-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.toc-number p {
  margin: 0;
  line-height: 1;
}

.toc-link:hover .toc-number {
  transform: scale(1.1);
}

.toc-text p {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
}

.toc-arrow {
  font-size: 16px;
  color: var(--color-text-light);
  transition: all 0.25s ease;
}

.toc-link:hover .toc-arrow {
  color: var(--color-secondary);
  transform: translateX(4px);
}

/* 共通コンテンツ */

.title-container {
  padding: 0;
}

.content-container {
  position: relative;
  padding: 50px 0;
}

.slide-content-extra-padding {
  padding-left: 0px !important;
  padding-top: 0px !important;
}

/* カラーレスカード（Tailwindカラークラスの代替） */

/* スクリーンショット表示 */

.screenshot-wrap {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  padding-top: var(--spacing-xs);
  padding-bottom: var(--spacing-xs);
}

/* 1カラム（単独）の場合はセンタリング */
.screenshot-wrap:only-child {
  /* margin-left: auto;
  margin-right: auto;
  text-align: center; */
}

.screenshot-wrap img {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 320px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
  display: block;
  margin: 0;
}

/* 複数画像グリッド */
.img-single {
  max-width: 100%;
  width: 640px;
}
.img-single-b {
  max-width: 100%;
  width: 480px;
}
.img-grid-single {
  display: block;
}
.img-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.img-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.img-grid-4 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

/* 複数カラム横並び */
.img-grid-2,
.img-grid-3,
.img-grid-4 {
  align-items: start;
}

.img-grid-2 .screenshot-wrap img,
.img-grid-3 .screenshot-wrap img,
.img-grid-4 .screenshot-wrap img,
.step-flow .screenshot-wrap img {
  width: 100%;
  height: auto;
}

/* ステップフロー */
.step-flow {
  display: flex;
  gap: 6px;
  align-items: stretch;
  flex-wrap: wrap;
}
.step-flow .screenshot-wrap {
  flex: 1;
  min-width: 120px;
}


/* アイコンテーブル */
.icon-table td:first-child {
  width: 40px;
  text-align: center;
  padding: 4px 6px;
}
.icon-table td:first-child img {
  height: 28px;
  width: auto;
  max-width: none;
  object-fit: contain;
  box-shadow: none;
  border: none;
  margin: 0;
}

@media (max-width: 820px) {
  .img-grid-2,
  .img-grid-3,
  .img-grid-4 {
    grid-template-columns: 1fr;
  }
}

.screenshot-caption {
  margin-top: 6px;
  font-size: 16px;
  color: var(--color-text-light);
  text-align: center;
}

.step-flow-result {
  width: 480px;
  max-width: 100%;
  margin: 0 auto;
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* テキスト＋スクリーンショット 2カラムレイアウト */

/* テキスト上・画像下の縦並びレイアウト（PC・スマホ共通） */
.split-layout,
.split-layout--wide-text,
.split-layout--wide-image {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 画像エリアは1〜4カラムの自動グリッド */
.split-layout > *:last-child,
.split-layout--wide-text > *:last-child,
.split-layout--wide-image > *:last-child {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  align-items: start;
}

/* screenshot-wrap が1枚だけのときは左寄せ */
.split-layout > *:last-child > .screenshot-wrap:only-child,
.split-layout--wide-text > *:last-child > .screenshot-wrap:only-child,
.split-layout--wide-image > *:last-child > .screenshot-wrap:only-child {
  /* max-width: 480px; */
  max-width: 100%;
  height: auto;
  justify-self: start;
}

.card-neutral {
  padding: 12px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.card-neutral h4 {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 6px;
}

.card-neutral i,
.icon-secondary,
.text-secondary {
  color: var(--color-secondary);
}

.text-light {
  color: var(--color-text-light);
}

/* .section は base.css の padding: var(--spacing-xxl) 0 を上書き */
.slide-container .section {
  padding: 0;
  margin-bottom: 2rem;
}

.section-title {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  padding: 5px 16px;
  background: var(--color-bg);
  border-left: 5px solid var(--color-primary);
  margin-bottom: 20px;
}

.section-content {
  margin-top: 8px;
  margin-left: 0;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
}

/* section-title がある場合のみ、その直後のコンテンツをインデント */
.section-title + .section-content,
.section-title ~ .section-content {
  margin-left: 32px;
}

.section-content.no-indent {
  margin-left: 0 !important;
}

.term-highlight {
  font-weight: 700;
  color: var(--color-primary);
}

.bullet-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 6px;
  margin-bottom: 6px;
}

.bullet {
  min-width: 18px;
  text-align: center;
  color: var(--color-primary);
}

.bullet-text p {
  margin: 0;
}

/* 目次へボタン */

.back-to-toc {
  position: absolute;
  top: 24px;
  right: 24px;
}

.back-to-toc a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 999px;
  background-color: rgba(15, 23, 42, 0.04);
  color: #111827;
  text-decoration: none;
}

.back-to-toc a:hover {
  background-color: rgba(15, 23, 42, 0.12);
}

/* ハイライトボックス */

.highlight-box {
  position: relative;
  margin-top: 12px;
  padding: 14px 16px 14px 52px;
  border-radius: 12px;
  background-color: var(--color-bg);
  /* border-left: 4px solid var(--color-secondary); */
  font-size: 14px;
  color: var(--color-text);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.08);
  line-height: 1.7;
}

.highlight-box::before {
  content: "\f0eb";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: var(--color-secondary);
}

.highlight-box--success {
  background-color: var(--color-bg-success);
  border-left-color: var(--color-secondary);
}

.highlight-box--success::before {
  content: "\f058";
  color: var(--color-secondary);
}

.highlight-box--warning {
  background-color: var(--color-bg-warning);
  border-left-color: var(--color-accent);
}

.highlight-box--warning::before {
  content: "\f071";
  color: var(--color-accent);
}

.highlight-box--danger {
  background-color: var(--color-bg-danger);
  border-left-color: var(--color-primary);
}

.highlight-box--danger::before {
  content: "\f06a";
  color: var(--color-primary);
}

/* フロー図（テキスト版） */

.flow-text-diagram {
  margin-top: 4px;
}

.flow-text-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 8px;
}

.flow-text-box {
  flex: 1 1 0;
  min-width: 180px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px 12px;
}

.flow-text-step {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.flow-text-main {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}

.flow-text-sub {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-light);
}

.flow-text-arrow {
  align-self: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-light);
}

.flow-text-caption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--color-text-light);
}

/* カードグリッド（機能概要・役割説明など） */

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
  margin-top: 0.6rem;
}

.icon-card {
  background-color: var(--color-white);
  border-radius: 0.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.icon-card-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.98rem;
  white-space: nowrap;
}

.icon-card-title i {
  font-size: 1rem;
  color: var(--color-secondary);
}

.icon-card-body {
  font-size: 0.95rem;
  margin: 0;
  color: var(--color-text);
  line-height: 1.65;
}

.icon-card-body ul {
  margin: 0.2rem 0 0;
  padding-left: 1.1rem;
}

.icon-card-body li {
  margin-bottom: 0.15rem;
}

/* カードレイアウト（目的・初期化など） */

.card-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.card-box {
  flex: 1 1 260px;
  background-color: var(--color-white);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 16px 20px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}

.card-title {
  margin: 0 0 6px;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
}

.card-title i {
  font-size: 0.95rem;
}

.card-body {
  margin: 0;
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.7;
}

ul.card-body {
  padding-left: 1.1rem;
  list-style: disc;
}

ul.card-body li {
  margin-bottom: 0.2rem;
}

.card-negative {
  /* border-left: 4px solid var(--color-accent); */
}

.card-positive {
  /* border-left: 4px solid var(--color-secondary); */
}

/* ブラケット図（リスト変更パターン） */

.bracket-container {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bracket-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (min-width: 960px) {
  .bracket-container {
    flex-direction: row;
    align-items: stretch;
  }

  .bracket-column-start {
    flex: 0.9 1 0;
  }

  .bracket-column-middle {
    flex: 0.9 1 0;
  }

  .bracket-column-end {
    flex: 1.3 1 0;
  }

  .bracket-column {
    height: 100%;
  }

  .bracket-card {
    flex: 1;
  }
}

.bracket-card {
  background-color: var(--color-white);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
  font-size: 13px;
  color: var(--color-text);
}

.bracket-card-main {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.bracket-icon {
  font-size: 20px;
  color: var(--color-primary);
  margin-top: 2px;
}

.bracket-main-text {
  flex: 1;
}

.bracket-main-title {
  margin: 0 0 4px;
  font-weight: 700;
}

.bracket-main-sub {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-light);
}

.bracket-card-branch {
  position: relative;
}

.bracket-branch-label {
  margin: 0 0 2px;
  font-weight: 600;
  font-size: 13px;
}

.bracket-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 700;
  margin-right: 4px;
}

.bracket-branch-sub {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--color-text-light);
}

.bracket-branch-icon {
  font-size: 14px;
  color: var(--color-text-light);
}

.bracket-card-leaf {
  font-size: 13px;
}

.bracket-leaf-title {
  margin: 0 0 4px;
  font-weight: 600;
}

.bracket-leaf-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 12px;
  color: var(--color-text);
}

.bracket-leaf-list li {
  margin-bottom: 2px;
}

.bracket-tag.tag-a {
  background-color: var(--color-secondary);
}

.bracket-tag.tag-b {
  background-color: var(--color-secondary);
  padding: 0 6px;
}

/* 入力モード用カード（スライド8） */

.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 4px;
}

.mode-card {
  background-color: var(--color-white);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mode-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mode-card-header i {
  font-size: 1.1rem;
}

.mode-card-title {
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.mode-card-title i {
  color: var(--color-primary);
}

.mode-card-tag {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background-color: var(--color-bg-success);
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
  margin-left: auto;
}

.mode-card-body {
  font-size: 0.9rem;
}

.mode-card-body ul {
  margin: 0.1rem 0 0;
  padding-left: 1.1rem;
}

.mode-card-body li {
  margin-bottom: 0.15rem;
}

.mode-step-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mode-step-flow__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background-color: var(--color-bg);
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

.mode-step-flow__arrow {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
}

.mode-step-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: #e0f2fe;
  color: #0369a1;
  font-weight: 600;
  font-size: 0.85rem;
}

.mode-step-text {
  font-size: 0.9rem;
}

.mode-card-note {
  margin-top: 12px;
  padding: 8px 12px;
  background-color: var(--color-bg-warning);
  border-left: 3px solid var(--color-primary);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--color-primary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.mode-card-note::before {
  content: "\f0eb";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--color-primary);
  font-size: 1rem;
}

/* スライド内の視覚的強化 */

.content-highlight {
  position: relative;
  padding: 16px 20px;
  margin: 12px 0;
  background: var(--color-bg);
  border-radius: 12px;
  border: 2px solid var(--color-border);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

.content-highlight::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 12px 0 0 12px;
}

.content-highlight--success {
  background: var(--color-bg-success);
  border-color: var(--color-secondary);
}

.content-highlight--success::before {
  background: var(--gradient-success);
}

.content-highlight--warning {
  background: var(--color-bg-warning);
  border-color: var(--color-accent);
}

.content-highlight--warning::before {
  background: var(--gradient-warning);
}

/* テーブル視覚強化 */

.visual-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 12px 0;
  /* border-radius: 12px; */
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.visual-table thead {
  background: var(--gradient-primary);
}

.visual-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-white);
  border-bottom: 2px solid var(--color-secondary);
}

.visual-table tbody tr {
  background-color: var(--color-white);
  transition: background-color 0.2s ease;
}

.visual-table tbody tr:nth-child(even) {
  background-color: var(--color-bg);
}

.visual-table tbody tr:hover {
  background-color: var(--color-bg);
}

.visual-table tbody td {
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.visual-table tbody tr:last-child td {
  border-bottom: none;
}

.items-start {
  padding: 10px 10ßpx;
}

/* レスポンシブ対応 */

/* iPad対応 (max-width: 1024px): 目次を1カラムに */
@media (max-width: 1024px) {
  .toc-list--2col {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-auto-flow: row;
  }
}

@media (max-width: 820px) {
  /* ---- マニュアルカード（TOPページ） ---- */
  .manual-card {
    flex-direction: column;
    text-align: center;
  }

  .manual-card__icon {
    margin: 0 auto;
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .manual-card__cta {
    display: none;
  }

  /* ---- スライドコンテナ共通 ---- */
  .slide-container {
    min-height: 0;
    border-radius: 0;
    box-shadow: none;
  }

  /* スライドの内側パディングをスマホ向けに縮小 */
  .slide-container:not(.slide-toc) {
    padding: 56px 16px 40px 36px; /* 上: header-bar分, 左: side-bar分 */
  }

  /* デコレーション装飾を細く */
  .header-bar {
    height: 10px;
  }

  .side-bar {
    width: 10px;
  }

  .version-tag {
    top: 16px;
    right: 16px;
    font-size: 11px;
    padding: 2px 10px;
  }

  .slide-container .footer {
    font-size: 10px;
    left: 20px;
  }

  .page-number {
    font-size: 11px;
    right: 16px;
  }

  /* ---- 表紙 ---- */
  .title-section {
    margin-top: 32px;
    padding: 0 8px 0 4px;
  }

  .title-cover {
    font-size: 28px;
  }

  .title {
    font-size: 20px;
  }

  .subtitle {
    font-size: 15px;
    margin-bottom: 24px;
  }

  .title-underline {
    width: 60px;
    height: 3px;
  }

  /* 表紙情報欄 */
  .info-section {
    padding: 0 8px 0 4px;
    margin-bottom: 48px;
  }

  .info-item {
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
  }

  .info-label {
    width: auto;
    font-size: 12px;
  }

  .info-content {
    font-size: 13px;
  }

  /* ---- 目次スライド ---- */
  .slide-toc {
    flex-direction: column;
  }

  .left-section {
    width: 100%;
    padding: 40px 16px 20px 36px;
  }

  .right-section {
    padding: 0 16px 40px 16px;
  }

  .vertical-divider {
    display: none;
  }

  .title-toc {
    font-size: 24px;
  }

  .toc-number {
    min-width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .toc-text p {
    font-size: 13px;
  }

  /* ---- 目次へボタン（絶対配置を相対に） ---- */
  .back-to-toc {
    position: static;
    margin-bottom: 12px;
    text-align: right;
  }

  /* ---- コンテンツエリア ---- */
  .content-container {
    padding: 16px 8px 40px 4px;
  }

  .slide-content-extra-padding {
    padding-left: 0 !important;
    padding-top: 0 !important;
  }

  .slide-overview-padding {
    padding: 16px !important;
  }

  /* ---- セクションタイトル・本文 ---- */
  .section-title {
    font-size: 14px;
    gap: 8px;
  }

  .section-title i {
    font-size: 1rem;
  }

  .section-content {
    margin-left: 0;
    font-size: 13px;
  }

  /* ---- テーブル: 横スクロール ---- */
  .visual-table,
  .feature-table,
  .function-table {
    font-size: 11px;
  }

  /* テーブルを包む要素がなければスクロール可能ラッパーが必要だが
     CSSのみで対処: slide-container の overflow: hidden を外してスクロール許可 */
  .slide-container {
    overflow-x: auto;
  }

  .visual-table thead th,
  .feature-table th,
  .function-table th {
    padding: 8px 10px;
  }

  .visual-table tbody td,
  .feature-table td,
  .function-table td {
    padding: 7px 10px;
    font-size: 11px;
  }

  /* 固定幅カラムをスマホで解除 */
  .table-column-icon,
  .table-column-mini,
  .table-column-version,
  .table-column-date,
  .table-column-medium,
  .table-column-small,
  .table-column-balanced {
    width: auto;
  }

  /* ---- スクリーンショット ---- */
  .screenshot-wrap img {
    border-radius: 6px;
  }

  /* ---- フロー図 ---- */
  .flow-text-row {
    flex-direction: column;
    gap: 6px;
  }

  .flow-text-box {
    min-width: 0;
    width: 100%;
  }

  .flow-text-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  /* ---- アイコングリッド・カード ---- */
  .icon-grid {
    grid-template-columns: 1fr;
  }

  .icon-card-title {
    white-space: normal;
    font-size: 0.92rem;
  }

  .icon-card-title i {
    font-size: 0.9rem;
    flex-shrink: 0;
  }

  .icon-card-body {
    font-size: 0.88rem;
  }

  .card-row {
    flex-direction: column;
  }

  .card-box {
    flex: none;
    width: 100%;
  }

  /* ---- モードグリッド ---- */
  .mode-grid {
    grid-template-columns: 1fr;
  }

  .mode-card-tag {
    font-size: 0.7rem;
  }

  /* ---- ハイライト・情報ボックス ---- */
  .highlight-box {
    padding: 12px 12px 12px 44px;
    font-size: 13px;
  }

  .highlight-box::before {
    font-size: 1.1rem;
    left: 12px;
  }

  .info-box {
    padding: 12px 12px 12px 44px;
    font-size: 13px;
  }

  .info-box::before {
    font-size: 1.1rem;
    left: 12px;
  }

  /* ---- ブラケット図 ---- */
  .bracket-container {
    flex-direction: column;
  }

  .bracket-card {
    font-size: 12px;
  }

  /* ---- ステップバッジ ---- */
  .step-badge {
    font-size: 0.8rem;
    min-width: 28px;
    height: 28px;
  }

  /* ---- 戻るナビ ---- */
  .manual-nav__link {
    font-size: 0.85rem;
    padding: 7px 14px;
  }
}

/* ============================================
   Tailwind互換グリッド／フレックスユーティリティ
   （CDN未ロード時のフォールバック、および明示的上書き）
   ============================================ */

.grid {
  display: grid;
}
.flex {
  display: flex;
}
.items-center {
  align-items: center;
}
.items-start {
  align-items: flex-start;
}
.flex-wrap {
  flex-wrap: wrap;
}
.text-center {
  text-align: center;
}

/* gap */
.gap-4 {
  gap: 1rem;
}
.gap-6 {
  gap: 1.5rem;
}
.gap-8 {
  gap: 2rem;
}

/* margin-bottom */
.mb-4 {
  margin-bottom: 1rem;
}
.mb-6 {
  margin-bottom: 1.5rem;
}
.mb-8 {
  margin-bottom: 2rem;
}

/* ベース（モバイルファースト） */
.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

/* md: (821px以上: iPad Air超え) */
@media (min-width: 821px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .md\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* lg: (1024px以上) */
@media (min-width: 1024px) {
  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .lg\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ノート／注意書き */

.callout,
.note-box {
  margin-top: 1.5rem;
  padding: 0.75rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text);
  border: 1px solid var(--color-secondary);
  background-color: var(--color-info);
}

.important-note {
  margin-top: 1.5rem;
  padding: 0.75rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text);
  border: 1px solid var(--color-accent);
  background-color: var(--color-info);
}

.callout.callout-warning,
.important-note {
  background-color: var(--color-info);
}

.callout.callout-danger {
  background-color: var(--color-info);
}

.note-box {
  background-color: var(--color-info);
}

.callout-title {
  font-weight: 600;
  margin: 0 0 0.3rem;
}

.callout-body {
  margin: 0;
}

.callout-body ul {
  margin: 0.25rem 0 0;
  padding-left: 1.1rem;
}

.callout-body li {
  margin-bottom: 0.2rem;
}

.spacing-top-md {
  margin-top: 0.8rem;
}

.spacing-top-lg {
  margin-top: 1rem;
}

.list-tight {
  margin: 0;
  padding-left: 1.1rem;
  list-style: disc;
}

.list-tight li {
  margin-bottom: 0.2rem;
}

.text-md {
  font-size: 0.98rem;
}

.text-sm {
  font-size: 0.9rem;
}

.table-column-icon {
  width: 2.5rem;
}

.table-column-mini {
  width: 2.2rem;
}

.table-column-version {
  width: 7rem;
}

.table-column-date {
  width: 9rem;
}

.table-column-medium {
  width: 8rem;
}

.table-column-small {
  width: 6rem;
}

.table-column-balanced {
  width: 7.5rem;
}

/* 丸数字リスト（list-decimal → ①②③ スタイル） */

.document ol.list-decimal {
  list-style: none !important;
  counter-reset: circle-ol;
  padding-left: 0 !important;
}

.document ol.list-decimal > li {
  counter-increment: circle-ol;
  position: relative;
  padding-left: 2em;
}

.document ol.list-decimal > li::before {
  content: counter(circle-ol);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78em;
  font-weight: 700;
  line-height: 1;
}

/* テーブル（機能一覧・モード比較） */

.feature-table,
.function-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin-top: 8px;
  background-color: #ffffff;
  overflow: hidden;
}

.feature-table th,
.feature-table td,
.function-table th,
.function-table td {
  border: 1px solid #e5e7eb;
  padding: 6px 8px;
  vertical-align: top;
}

.feature-table th,
.function-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  text-align: left;
}

.feature-table td p,
.function-table td p {
  margin: 0;
}

.function-table td.availability-cell {
  text-align: center;
  font-weight: 600;
  color: #1e3a8a;
  width: 64px;
}

.feature-table .feature-icon,
.function-table .feature-icon {
  display: table-cell;
  text-align: center;
  vertical-align: top;
  width: 2.5rem;
  height: auto;
  font-size: inherit;
  margin-bottom: 0;
  background-color: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.feature-table .feature-icon i,
.function-table .feature-icon i {
  font-size: 15px;
  color: var(--color-primary);
}

.feature-table .feature-num,
.function-table .feature-num {
  text-align: center;
  white-space: nowrap;
  width: 2.5em;
  vertical-align: middle;
}

.num-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 1.6em;
  height: 1.6em;
  margin-top: 0.1em;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
}

.feature-table .feature-name,
.function-table .feature-name {
  font-weight: 600;
}

.feature-table .feature-desc,
.function-table .feature-desc {
  font-size: 12px;
  color: #334155;
  line-height: 1.6;
}

.mode-compare-table th,
.mode-compare-table td {
  font-size: 0.9rem;
}

/* ステップ形式のフローカード（編集・CSV・お気に入りなど共通） */

.step-flow {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.step-flow.step-flow-horizontal {
  flex-direction: column;
}

@media (min-width: 960px) {
  .step-flow.step-flow-horizontal {
    flex-direction: row;
  }
}

.step-card {
  flex: 1 1 0;
  background-color: #ffffff;
  border-radius: 0.75rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  padding: 0.85rem 1rem;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.step-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: #0f766e;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.step-title {
  font-weight: 600;
  font-size: 0.98rem;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.step-title i {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.step-body {
  font-size: 0.9rem;
  margin: 0;
}

.step-body ul {
  margin: 0.2rem 0 0;
  padding-left: 1.1rem;
}

.step-body li {
  margin-bottom: 0.15rem;
}

/* ダークモード（マニュアルスライドは常にライトモード固定のため無効化） */

/* 印刷用設定：1スライド＝1ページ */

@media print {
  @page {
    size: A4 portrait;
    margin: 10mm;
  }

  html,
  body {
    background-color: #ffffff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    margin: 0;
  }

  .document {
    padding: 0;
    gap: 0;
  }

  .slide-container {
    box-shadow: none !important;
    border-radius: 0;
    margin: 0;
    width: 100%;
    max-width: none;
    min-height: 0;
    page-break-after: always;
    break-after: page;
  }

  .slide-container:last-child {
    page-break-after: auto;
    break-after: auto;
  }

  .manual-nav {
    display: none !important;
  }

  .back-to-toc {
    display: none !important;
  }

  /* テーブルがページ途中で分断されるのを抑制 */
  .feature-table,
  .feature-table tr,
  .feature-table td,
  .feature-table th,
  .function-table,
  .function-table tr,
  .function-table td,
  .function-table th {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  /* カード・図解系もできるだけ同一ページ内に収める */
  .card-row,
  .card-box,
  .mode-grid,
  .mode-card,
  .flow-text-diagram,
  .bracket-container,
  .bracket-card,
  .step-card {
    page-break-inside: avoid;
    break-inside: avoid;
  }
}

/* 目次スライドのタイトル周りだけパディング調整 */
.slide-toc .title-container {
  padding: 0;
}

/* マニュアル一覧用カード */
.manual-card {
  display: flex;
  align-items: stretch;
  gap: 16px;
  padding: 20px 24px;
  background-color: #ffffff;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.manual-card:hover,
.manual-card:focus {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.18);
}

.manual-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  font-size: 28px;
}

.manual-card__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.manual-card__title {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
  color: #1e3a8a;
}

.manual-card__description {
  font-size: 14px;
  line-height: 1.6;
  color: #475569;
  margin: 0;
}

.manual-card__cta {
  align-self: center;
  font-size: 24px;
  color: #2563eb;
  transition: transform 0.2s ease;
}

.manual-card:hover .manual-card__cta,
.manual-card:focus .manual-card__cta {
  transform: translateX(4px);
}

@media (max-width: 640px) {
  .manual-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .manual-card__icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
  }
}

/* 画面用：読みやすさ＋表紙のズレ修正 */
@media screen {
  /* 表紙1枚目：左ラベルと右本文のズレ修正 */
  .info-item {
    align-items: flex-start;
  }

  .info-label {
    width: 140px;
    font-size: 0.95rem;
    padding-top: 0;
  }

  .info-label p,
  .info-content p {
    margin: 0;
  }

  .info-content ul {
    margin: 0;
    padding-left: 1.3rem;
  }

  .info-content li {
    margin-bottom: 4px;
  }

  .section-content,
  .info-content,
  .highlight-box,
  .toc-text p,
  .flow-text-main {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .flow-text-sub,
  .flow-text-caption,
  .callout,
  .note-box,
  .important-note,
  .bracket-main-sub,
  .bracket-branch-sub,
  .bracket-branch-icon,
  .toc-arrow {
    font-size: 0.9rem;
  }

  .card-body,
  .bracket-card,
  .bracket-card-leaf,
  .mode-card-body,
  .step-body {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .feature-table,
  .function-table {
    font-size: 0.9rem;
  }

  .feature-table .feature-desc,
  .function-table .feature-desc {
    font-size: 0.9rem;
    line-height: 1.65;
  }

  .toc-number {
    font-size: 1.05rem;
  }

  .flow-text-box {
    min-width: 200px;
  }
}

/* ============================================
   スマートフォン対応 (max-width: 480px)
   ============================================ */

@media (max-width: 480px) {
  /* スライドコンテナ */
  .slide-container {
    border-radius: 0;
    box-shadow: none;
    min-height: 0;
  }

  .slide-container:not(.slide-toc) {
    padding: 56px 16px 48px 28px;
  }

  /* 左・上のデコレーションバー */
  .header-bar {
    height: 8px;
  }

  .side-bar {
    width: 8px;
  }

  /* 表紙 */
  .title-section {
    margin-top: 40px;
    padding: 0 8px 0 12px;
  }

  .title-cover {
    font-size: 28px;
  }

  .title {
    font-size: 20px;
  }

  .subtitle {
    font-size: 14px;
    margin-bottom: 24px;
  }

  .version-tag {
    top: 16px;
    right: 16px;
    font-size: 11px;
    padding: 2px 10px;
  }

  .info-section {
    padding: 0 8px 0 12px;
    margin-bottom: 40px;
  }

  .info-item {
    flex-direction: column;
    gap: 2px;
  }

  .info-label {
    width: auto;
    font-size: 12px;
  }

  .info-content {
    font-size: 13px;
  }

  /* 目次スライド */
  .slide-toc {
    flex-direction: column;
  }

  .left-section {
    width: 100%;
    padding: 44px 16px 16px 28px;
  }

  .right-section {
    padding: 0 16px 48px 16px;
  }

  .vertical-divider {
    display: none;
  }

  .title-toc {
    font-size: 24px;
  }

  .toc-item + .toc-item {
    margin-top: 8px;
  }

  .toc-list--2col .toc-item,
  .toc-list--2col .toc-item + .toc-item {
    margin-top: 0 !important;
  }

  .toc-link {
    padding: 10px 12px;
    border-radius: 8px;
  }

  .toc-number {
    min-width: 26px;
    height: 26px;
    font-size: 12px;
  }

  .toc-text p {
    font-size: 13px;
  }

  /* コンテンツコンテナ */
  .content-container {
    padding: 12px 0 40px;
  }

  .slide-content-extra-padding {
    padding-top: 12px !important;
  }

  /* セクション */
  .section {
    /* margin-bottom: 10px; */
  }

  .section-title {
    font-size: 14px;
    padding: 8px 10px;
  }

  .section-title i {
    font-size: 0.9rem;
  }

  .section-content {
    margin-left: 0;
    font-size: 13px;
  }

  /* テーブル：横スクロール対応 */
  .feature-table,
  .function-table {
    display: block;
    overflow-x: auto;
    font-size: 12px;
    white-space: nowrap;
  }

  .feature-table .feature-desc,
  .function-table .feature-desc {
    white-space: normal;
    min-width: 180px;
  }

  /* info-box */
  .info-box {
    padding: 12px 12px 12px 44px;
    font-size: 13px;
  }

  .info-box::before {
    left: 12px;
    font-size: 1.1rem;
  }

  .info-box__title {
    font-size: 13px;
    font-weight: bold;
  }

  /* カード */
  .card-neutral {
    padding: 10px 12px;
    font-size: 13px;
  }

  /* グリッド系を1カラムに */
  .grid.md\:grid-cols-2,
  .grid.md\:grid-cols-3,
  .grid.md\:grid-cols-4,
  .grid.lg\:grid-cols-4 {
    grid-template-columns: 1fr !important;
  }

  /* back-to-toc */
  .back-to-toc {
    top: 14px;
    right: 14px;
    font-size: 11px;
  }

  /* ページ番号・フッター */
  .page-number {
    font-size: 11px;
    right: 16px;
    bottom: 10px;
  }

  .slide-container .footer {
    font-size: 10px;
    left: 16px;
    bottom: 10px;
  }

  /* step-flow：スマホで縦並び */
  .step-flow {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .step-flow .screenshot-wrap {
    width: 100%;
    max-width: 100%;
  }

  /* title-underline */
  .title-underline {
    width: 60px;
    height: 3px;
  }
}

/* ── 機能詳細カード（更新履歴ページ） ─────────────────────────── */
.feature-card {
  background: var(--color-bg);
  border-radius: 16px;
  padding: 24px;
  border: none;
}

.feature-card__header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 16px;
}

.feature-card__icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-card__icon--shadow {
  box-shadow: 0 6px 16px rgba(5, 150, 105, 0.28);
}

.feature-card__icon i {
  font-size: 40px;
  color: var(--color-white);
}

.feature-card__meta {
  flex: 1;
}

.feature-card__badge {
  display: inline-block;
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 8px;
}

.feature-card__title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  margin: 0;
}

.feature-card__title--primary {
  color: var(--color-primary);
}

.feature-card__body {
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  display: grid;
  gap: 12px;
}

.feature-card__list {
  margin: 0;
  padding-left: 18px;
  color: var(--color-text);
  font-size: 15px;
  list-style: disc;
}

.feature-card__tip {
  background: var(--color-bg);
  border-radius: 10px;
  padding: 12px;
}

.feature-card__tip--lg {
  border-radius: 8px;
  padding: 14px;
}

.feature-card__tip--dashed {
  border: 1px dashed var(--color-secondary);
  padding: 14px;
}

.feature-card__tip-text--flush {
  margin-top: 0;
}

.feature-card__tip-title {
  margin: 0;
  font-size: 14px;
  color: var(--color-text);
  font-weight: 700;
}

.feature-card__tip-title--accent {
  font-size: 15px;
  color: var(--color-secondary);
  margin-bottom: 6px;
}

.feature-card__tip-title i,
.feature-card__tip-title--accent i,
.feature-card__tip-title--primary i {
  margin-right: 6px;
}

.feature-card__tip-title--primary {
  font-size: 15px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.feature-card__tip-text {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--color-text);
}

.feature-card__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}

.feature-card__check--last {
  margin-bottom: 16px;
}

.feature-card__check-text {
  margin: 0;
  font-size: 15px;
  color: var(--color-text);
}

.feature-card__check > i {
  font-size: 20px;
  margin-top: 2px;
  flex-shrink: 0;
}

/* ── ページヘッダー／フッター ────────────────────────────────── */
.page-header,
.page-footer {
  background: var(--color-primary);
}

.page-header__eyebrow {
  color: var(--color-bg);
}

.page-header__title {
  color: var(--color-white);
}

.page-header__badge {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.page-footer__text {
  color: var(--color-text-light);
}

/* ── 概要まとめカード ─────────────────────────────────────────── */
.summary-card {
  padding: 28px;
  border-radius: 16px;
  background: var(--color-white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  display: grid;
  gap: 12px;
}

.summary-item__title {
  font-size: 18px;
}

.summary-item__desc {
  font-size: 15px;
  color: var(--color-text-light);
}

/* ── 画像モーダル ── */
.img-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 9000;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.img-modal-overlay.is-open {
  display: flex;
}

.img-modal-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
  cursor: default;
}

.img-modal-close {
  position: fixed;
  top: 16px;
  right: 20px;
  font-size: 32px;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  z-index: 9001;
}

.slide-container img {
  cursor: zoom-in;
}