/* ===== CSS Variables ===== */
:root {
  /* 食関連ライブラリ：食育・現場向けの温かみある配色（果物版を踏襲） */
  --color-primary: #2d6a4f;
  --color-primary-light: #40916c;
  --color-primary-dark: #1b4332;
  --color-accent: #e07a2f;
  --color-accent-light: #f4a261;
  --color-bg: #faf8f5;
  --color-bg-warm: #fff9f0;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-muted: #666;
  --color-border: #e8e0d8;
  --color-required: #c0392b;
  --color-important: #d35400;
  --color-exam: #8e44ad;
  --color-tip: #2980b9;
  --color-warning: #e74c3c;
  --sidebar-width: 300px;
  --top-bar-height: 56px;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  min-height: 100vh;
}

#app {
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(0);
  transition: transform 0.3s ease;
  overflow: hidden;
}

.sidebar.collapsed {
  transform: translateX(-100%);
}

.sidebar-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: white;
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.sidebar-close { display: none; color: white; }

.toc-nav {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
}

.toc-chapter {
  margin-bottom: 0.5rem;
}

.toc-chapter-btn {
  width: 100%;
  text-align: left;
  padding: 0.6rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s;
}

.toc-chapter-btn:hover,
.toc-chapter-btn.active {
  background: var(--color-bg-warm);
  color: var(--color-primary);
}

.toc-sections {
  list-style: none;
  padding-left: 0.5rem;
}

.toc-section-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1.25rem 0.45rem 2rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}

.toc-section-link:hover,
.toc-section-link.active {
  color: var(--color-primary);
  background: var(--color-bg-warm);
  border-left-color: var(--color-accent);
}

.toc-section-link .review-star {
  margin-left: auto;
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity 0.15s;
}

.toc-section-link.bookmarked .review-star {
  opacity: 1;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 150;
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: margin-left 0.3s ease;
  min-height: 100vh;
}

.main-content.expanded {
  margin-left: 0;
}

.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--top-bar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1rem;
  box-shadow: var(--shadow);
}

.menu-toggle { display: none; }

.top-bar-title {
  flex: 1;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.review-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  background: var(--color-bg-warm);
  border: 1px solid var(--color-accent-light);
  border-radius: 20px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: all 0.15s;
}

.review-btn:hover {
  background: var(--color-accent);
  color: white;
}

.badge {
  background: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: 10px;
  min-width: 1.2rem;
  text-align: center;
}

.review-btn:hover .badge {
  background: white;
  color: var(--color-accent);
}

.page-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ===== Furigana (ruby) ===== */
ruby {
  ruby-align: center;
  ruby-position: over;
}

rt {
  font-size: 0.52em;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0;
  user-select: none;
}

.section-title ruby rt,
.chapter-header h1 ruby rt,
.block-title ruby rt {
  font-size: 0.48em;
}

.data-table ruby rt {
  font-size: 0.5em;
  line-height: 1.2;
}

.toc-section-link ruby rt {
  font-size: 0.45em;
}

@media (max-width: 480px) {
  rt {
    font-size: 0.48em;
  }
}

/* ===== Icon Button ===== */
.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.35rem;
  border-radius: 6px;
  transition: background 0.15s;
}

.icon-btn:hover { background: rgba(0,0,0,0.06); }

/* ===== Home Page ===== */
.home-hero {
  text-align: center;
  padding: 3rem 1rem 2.5rem;
  background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  border-radius: var(--radius);
  color: white;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.home-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.home-hero p {
  font-size: 1rem;
  opacity: 0.9;
  max-width: 520px;
  margin: 0 auto;
}

.home-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}

.home-stat {
  text-align: center;
}

.home-stat-num {
  font-size: 2rem;
  font-weight: 900;
  display: block;
}

.home-stat-label {
  font-size: 0.8rem;
  opacity: 0.85;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.chapter-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

.chapter-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.chapter-card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.chapter-card-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chapter-badge,
.chapter-badge-inline {
  display: inline-block;
  background: linear-gradient(135deg, #8e44ad, #6c3483);
  color: white;
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.03em;
  vertical-align: middle;
}

.chapter-badge-inline {
  font-size: 0.7rem;
  margin-left: 0.35rem;
}

.chapter-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0.35rem 0 0.5rem;
  color: var(--color-text);
  line-height: 1.4;
}

.chapter-card-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ===== Chapter Page ===== */
.chapter-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 3px solid var(--color-primary-light);
}

.chapter-header-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
}

.chapter-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.5vw, 1.9rem);
  color: var(--color-primary-dark);
  line-height: 1.4;
}

.chapter-toc {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.chapter-toc h3 {
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.chapter-toc-list {
  list-style: none;
}

.chapter-toc-list li {
  margin-bottom: 0.35rem;
}

.chapter-toc-list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  transition: color 0.15s;
}

.chapter-toc-list a:hover { color: var(--color-primary); }

/* ===== Section ===== */
.section-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  scroll-margin-top: calc(var(--top-bar-height) + 1rem);
}

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.section-title-wrap { flex: 1; min-width: 200px; }

.section-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.4;
}

.section-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.tag-required { background: #fdecea; color: var(--color-required); border: 1px solid #f5c6cb; }
.tag-important { background: #fef5ec; color: var(--color-important); border: 1px solid #fad7a0; }
.tag-exam { background: #f4ecf7; color: var(--color-exam); border: 1px solid #d7bde2; }

.bookmark-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-bg);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  transition: all 0.15s;
}

.bookmark-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.bookmark-btn.active { background: #fff8e7; border-color: var(--color-accent); color: var(--color-accent); }

.section-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.15s;
}

.nav-btn:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ===== Content Blocks ===== */
.block-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  border-left: 4px solid var(--color-primary-light);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  background: var(--color-bg-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.block-paragraph {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.block-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 1.5rem 0 0.75rem;
}

/* Callout boxes */
.callout {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin: 1.25rem 0;
  border-left: 4px solid;
}

.callout-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

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

.callout-important { background: #fef5ec; border-color: var(--color-important); }
.callout-important .callout-title { color: var(--color-important); }

.callout-tip { background: #ebf5fb; border-color: var(--color-tip); }
.callout-tip .callout-title { color: var(--color-tip); }

.callout-warning { background: #fdecea; border-color: var(--color-warning); }
.callout-warning .callout-title { color: var(--color-warning); }

/* Compare cards */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0;
}

.compare-card {
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 2px solid;
}

.compare-card.green { background: #f0faf4; border-color: #40916c; }
.compare-card.orange { background: #fff8f0; border-color: #e07a2f; }
.compare-card.red { background: #fef5f5; border-color: #e74c3c; }
.compare-card.blue { background: #f0f7ff; border-color: #3498db; }

.compare-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.compare-sublabel {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.compare-card ul {
  list-style: none;
  font-size: 0.88rem;
}

.compare-card li {
  padding: 0.25rem 0;
  padding-left: 1rem;
  position: relative;
}

.compare-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* Tables */
.data-table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th {
  background: var(--color-primary);
  color: white;
  padding: 0.65rem 1rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.data-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:nth-child(even) { background: var(--color-bg-warm); }
.data-table.highlight tbody tr:hover { background: #e8f5e9; }

/* Bar chart */
.bar-chart { margin: 1.25rem 0; }

.bar-item {
  display: grid;
  grid-template-columns: 100px 1fr 60px;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.bar-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-align: right;
}

.bar-track {
  background: var(--color-border);
  border-radius: 6px;
  height: 24px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent));
  border-radius: 6px;
  transition: width 0.6s ease;
  min-width: 4px;
}

.bar-value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.bar-note {
  grid-column: 2 / -1;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: -0.3rem;
  padding-left: 0;
}

/* Info cards */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.info-card {
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
}

.info-card.yellow { background: #fffde7; border-top: 3px solid #f9a825; }
.info-card.orange { background: #fff3e0; border-top: 3px solid #ef6c00; }
.info-card.green { background: #e8f5e9; border-top: 3px solid #2e7d32; }
.info-card.blue { background: #e3f2fd; border-top: 3px solid #1565c0; }
.info-card.purple { background: #f3e5f5; border-top: 3px solid #7b1fa2; }
.info-card.pink { background: #fce4ec; border-top: 3px solid #c2185b; }

.info-card-icon { font-size: 1.75rem; margin-bottom: 0.5rem; }

.info-card-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.6rem;
  color: var(--color-primary-dark);
}

.info-card-effects {
  list-style: none;
  font-size: 0.82rem;
  margin-bottom: 0.6rem;
}

.info-card-effects li {
  padding: 0.15rem 0;
  padding-left: 0.9rem;
  position: relative;
}

.info-card-effects li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.75rem;
}

.info-card-sources {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  border-top: 1px dashed var(--color-border);
  padding-top: 0.5rem;
}

/* Timeline */
.timeline { margin: 1rem 0; }

.timeline-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  position: relative;
}

.timeline-item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: -8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}

.timeline-dot.blue { background: #3498db; }
.timeline-dot.green { background: #27ae60; }
.timeline-dot.yellow { background: #f39c12; }
.timeline-dot.orange { background: #e67e22; }
.timeline-dot.red { background: #e74c3c; }
.timeline-dot.brown { background: #8d6e63; }

.timeline-content {
  flex: 1;
  background: var(--color-bg-warm);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
}

.timeline-era {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.3rem;
}

.timeline-text { font-size: 0.88rem; }

/* Calendar */
.season-calendar { margin: 1rem 0; }

.season-badge {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  color: white;
}

.season-badge.春 { background: #e91e63; }
.season-badge.夏 { background: #ff9800; }
.season-badge.秋 { background: #795548; }
.season-badge.冬 { background: #2196f3; }

.month-block {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.85rem;
  align-items: flex-start;
}

.month-label {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.month-fruits {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-top: 0.5rem;
}

.fruit-tag {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-size: 0.82rem;
}

/* Ranking cards */
.ranking-grid {
  display: grid;
  gap: 0.85rem;
  margin: 1rem 0;
}

.ranking-card {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--color-primary);
}

.ranking-fruit {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

.ranking-ranks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.rank-badge {
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: white;
  border: 1px solid var(--color-border);
}

.rank-badge.gold { border-color: #ffd700; background: #fffde7; font-weight: 600; }

.ranking-varieties {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Content figures */
.content-figure {
  margin: 1.25rem 0 1.5rem;
}

.content-figure-inner {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border, #e0e0e0);
  background: #fafafa;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.content-figure img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.content-figure-caption {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  padding: 0 0.15rem;
}

/* Fruit diagram */
.fruit-diagram {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0;
}

.fruit-type {
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  border: 2px solid;
}

.fruit-type.true-fruit { background: #fff8e1; border-color: #ffa000; }
.fruit-type.false-fruit { background: #fce4ec; border-color: #e91e63; }

.fruit-type-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }

.fruit-type h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: var(--color-primary-dark);
}

.fruit-type p { font-size: 0.85rem; margin-bottom: 0.6rem; }

.fruit-type ul {
  list-style: none;
  font-size: 0.82rem;
  text-align: left;
}

.fruit-type li {
  padding: 0.2rem 0;
  padding-left: 1rem;
  position: relative;
}

.fruit-type li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Jam triangle */
.jam-triangle {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
  margin: 1.5rem 0 1rem;
  position: relative;
}

.jam-element {
  text-align: center;
  padding: 1rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.9rem;
}

.jam-element small { font-weight: 400; font-size: 0.75rem; display: block; margin-top: 0.2rem; }
.jam-element.pectin { background: #e8f5e9; border: 2px solid #66bb6a; }
.jam-element.acid { background: #fff3e0; border: 2px solid #ffa726; }
.jam-element.sugar { background: #fce4ec; border: 2px solid #ef5350; }

.jam-center {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--color-primary);
  color: white;
  padding: 0.75rem;
  border-radius: var(--radius);
  font-weight: 700;
}

/* Ordered list block */
.block-list { margin: 0.75rem 0 1rem 1.5rem; font-size: 0.92rem; }
.block-list li { margin-bottom: 0.4rem; }

/* Review page */
.review-page h1 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

.review-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
}

.review-empty-icon { font-size: 3rem; margin-bottom: 1rem; }

.review-list { list-style: none; }

.review-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
}

.review-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.review-item-info { flex: 1; }
.review-item-chapter { font-size: 0.78rem; color: var(--color-primary); font-weight: 600; }
.review-item-title { font-weight: 600; font-size: 0.95rem; }

.review-remove {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0.5;
  transition: opacity 0.15s;
}

.review-remove:hover { opacity: 1; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close { display: block; }

  .sidebar-overlay.open { display: block; }

  .main-content {
    margin-left: 0;
  }

  .menu-toggle { display: block; }

  .compare-grid,
  .fruit-diagram {
    grid-template-columns: 1fr;
  }

  .bar-item {
    grid-template-columns: 80px 1fr 50px;
  }

  .jam-triangle {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .page-container { padding: 1.25rem 1rem 3rem; }
  .section-block { padding: 1.25rem; }
  .home-stats { gap: 1rem; }
}

/* ===== 食関連ライブラリ（ジャンル一覧） ===== */
.library-category {
  margin-bottom: 2.5rem;
}

.library-category-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.35rem;
}

.library-category-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.genre-card .chapter-card-num {
  color: var(--color-accent);
}

.textbook-subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-top: 0.75rem;
  max-width: 42rem;
  line-height: 1.7;
}

.toc-library-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding: 0 0.75rem 0.5rem;
}

.toc-genre-btn {
  margin-bottom: 0.35rem;
}