/* article-common.css v5 — 全記事共通CSS */

:root {
  --color-primary: #0f4c75;
  --color-primary-dark: #0a3350;
  --color-accent: #3282b8;
  --color-accent-light: #bbe1fa;
  --color-bg-body: #f8f9fa;
  --color-bg-card: #ffffff;
  --color-text-main: #1a202c;
  --color-text-muted: #4a5568;
  --color-text-light: #718096;
  --color-border: #e2e8f0;
  --color-tag-blue-bg: #ebf8ff;
  --color-tag-blue-text: #2b6cb0;
  --color-tag-green-bg: #f0fff4;
  --color-tag-green-text: #2f855a;
  --color-tag-red-bg: #fff5f5;
  --color-tag-red-text: #c53030;
  --color-tag-gold-bg: #fffff0;
  --color-tag-gold-text: #975a16;
  --color-negative: #c53030;
  --color-positive: #2f855a;
  --color-gold: #975a16;
  --font-family-base: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 64px;
  --shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Site Header */
.site-header {
  background-color: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}
.logo a { color: inherit; }
.logo-icon { height: 1.5em; width: auto; vertical-align: middle; }
.main-nav ul { display: flex; gap: var(--spacing-lg); }
.main-nav a {
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
}
.main-nav a:hover, .main-nav a.active { color: var(--color-primary); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
}

/* Article Header — FIX: transparent bg to eliminate visual gap on mobile */
.article-header {
  padding: var(--spacing-md) 0 var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}
.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}
.article-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-top: var(--spacing-sm);
  color: var(--color-text-main);
}

/* Lead paragraph */
.lead {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

/* Tags */
.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.75rem;
}
.tag-blue { background-color: var(--color-tag-blue-bg); color: var(--color-tag-blue-text); }
.tag-green { background-color: var(--color-tag-green-bg); color: var(--color-tag-green-text); }
.tag-red { background-color: var(--color-tag-red-bg); color: var(--color-tag-red-text); }
.tag-gold { background-color: var(--color-tag-gold-bg); color: var(--color-tag-gold-text); }

/* Article Content */
.article-container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-main);
}
.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: 56px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-primary);
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--color-text-main);
}
.article-content p {
  margin-bottom: 20px;
}
.article-content ul,
.article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
}

/* Key Takeaways Box */
.key-takeaways {
  background-color: var(--color-tag-blue-bg);
  border: 1px solid var(--color-accent-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: 32px;
}
.key-takeaways .box-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-main);
}
.key-takeaways ul {
  margin-bottom: 0;
  padding-left: 20px;
  list-style: disc;
}
.key-takeaways li {
  margin-bottom: 8px;
  color: var(--color-text-main);
}

/* TOC Box */
.toc-box {
  background-color: #f7fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
}
.toc-box .widget-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.toc-list { padding-left: 0; list-style: none; margin-bottom: 0; }
.toc-list li { margin-bottom: 12px; }
.toc-list li:last-child { margin-bottom: 0; }
.toc-list a {
  color: var(--color-text-muted);
  font-size: 1rem;
  display: block;
  padding: 4px 0;
}
.toc-list a:hover { color: var(--color-primary); text-decoration: underline; }

/* Verdict Box */
.verdict {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) 28px;
  margin: 24px 0;
  position: relative;
  overflow: hidden;
}
.verdict::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.verdict .verdict-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 2px;
  color: #ffd700;
}
.verdict h2,
.verdict h3 {
  color: #fff;
  border-bottom-color: rgba(255,255,255,0.2);
}
.verdict p {
  color: rgba(255,255,255,0.92);
  line-height: 1.9;
  font-size: 0.95rem;
}
.verdict strong { color: #ffd700; }
.verdict ul { color: rgba(255,255,255,0.92); }

/* Data Card */
.data-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg) 28px;
  box-shadow: var(--shadow-sm);
  margin: 20px 0;
  border-left: 4px solid var(--color-accent);
}
.data-card.red { border-left-color: var(--color-negative); }
.data-card.green { border-left-color: var(--color-positive); }
.data-card.gold { border-left-color: var(--color-gold); }
.data-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

/* Summary Grid */
.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}
.summary-item {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.summary-item .metric {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 6px 0;
}
.summary-item .metric-label {
  font-size: 0.7rem;
  color: var(--color-text-light);
  letter-spacing: 1px;
  font-weight: 500;
}

/* Data Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 1rem;
}
.data-table th, .data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
.data-table th {
  background-color: #f7fafc;
  font-weight: 600;
  color: var(--color-text-muted);
}
.data-table tr:hover { background-color: #f8f9fa; }

/* Rich Table (with dark header) */
.table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-card);
  font-size: 0.9rem;
}
thead th {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 14px;
  text-align: center;
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 1px;
  white-space: nowrap;
}
tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: right;
  white-space: nowrap;
}
tbody td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--color-text-main);
}
tbody tr:hover { background: rgba(15,76,117,0.03); }

.negative { color: var(--color-negative); font-weight: 700; }
.positive { color: var(--color-positive); font-weight: 700; }

/* Timeline */
.timeline {
  position: relative;
  padding-left: 28px;
  margin: 24px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  margin-bottom: 20px;
  padding: 14px 20px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -25px;
  top: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg-body);
}
.timeline-item.alert::before { background: var(--color-negative); }
.timeline-item.ok::before { background: var(--color-positive); }
.timeline-date {
  font-size: 0.7rem;
  color: var(--color-text-light);
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.timeline-content {
  font-size: 0.9rem;
  line-height: 1.75;
}

/* Bar Chart */
.bar-chart { margin: 20px 0; }
.bar-row { display: flex; align-items: center; margin-bottom: 10px; }
.bar-label { width: 140px; font-size: 0.85rem; font-weight: 500; flex-shrink: 0; }
.bar-track {
  flex: 1;
  height: 22px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.bar-fill { height: 100%; border-radius: var(--radius-sm); transition: width 1s ease; }
.bar-value {
  width: 80px;
  text-align: right;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-left: 10px;
}

/* Risk Alert */
.risk-alert {
  background-color: #fffaf0;
  border-left: 4px solid #ed8936;
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: var(--radius-md);
  color: #744210;
}
.risk-alert p { margin-bottom: 0; }

/* SNS Share Buttons */
.sns-share {
  margin-top: 48px;
  padding: 28px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.sns-share-label {
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--color-text-light);
  font-weight: 500;
  margin-bottom: 16px;
}
.sns-share-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.sns-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
  color: #fff;
}
.sns-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.sns-btn svg { width: 16px; height: 16px; fill: currentColor; flex-shrink: 0; }
.sns-btn-x { background: #000; }
.sns-btn-facebook { background: #1877f2; }
.sns-btn-line { background: #06c755; }
.sns-btn-hatena { background: #00a4de; }

/* Floating SNS Share (Desktop) */
.sns-floating {
  position: fixed;
  left: calc((100vw - 1000px) / 2 - 64px);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.sns-floating.is-visible { opacity: 1; visibility: visible; }
.sns-floating .sns-float-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
}
.sns-floating .sns-float-btn:hover {
  transform: scale(1.12);
  box-shadow: var(--shadow-lg);
}
.sns-floating .sns-float-btn svg { width: 18px; height: 18px; fill: currentColor; }

/* Floating SNS Share (Mobile) */
.sns-floating-mobile { display: none; }

/* Footer */
.site-footer {
  background-color: #1a202c;
  color: white;
  padding: var(--spacing-xl) 0;
  margin-top: auto;
}
.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  text-align: center;
}
.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 0.9rem;
}
.footer-links a { color: #a0aec0; }
.footer-links a:hover { color: white; }
.copyright { color: #718096; font-size: 0.9rem; }
.disclaimer { color: #4a5568; font-size: 0.8rem; max-width: 800px; }

/* Ad Units */
.ad-unit { margin: 2rem auto; text-align: center; max-width: 728px; }
.ad-unit.ad-hidden { display: none !important; margin: 0; padding: 0; }

/* Access Ranking */
.ranking-section {
  margin-top: 48px;
  padding: 28px 0;
  border-top: 1px solid var(--color-border);
  display: none;
}
.ranking-section.is-loaded { display: block; }
.ranking-label {
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--color-text-light);
  font-weight: 500;
  margin-bottom: 16px;
  text-align: center;
}
.ranking-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ranking-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
  border-left: 3px solid transparent;
}
.ranking-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.ranking-item.is-current {
  border-left-color: var(--color-primary);
  background: var(--color-tag-blue-bg);
}
.ranking-num {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 28px;
  text-align: center;
  flex-shrink: 0;
}
.ranking-item:nth-child(1) .ranking-num { color: #b7950b; }
.ranking-item:nth-child(2) .ranking-num { color: #718096; }
.ranking-item:nth-child(3) .ranking-num { color: #a0522d; }
.ranking-info { flex: 1; min-width: 0; }
.ranking-title {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ranking-views {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* Breadcrumb */
.breadcrumb {
  background-color: var(--color-bg-body);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  margin-right: var(--spacing-xs);
  color: var(--color-text-light);
}
.breadcrumb-item a {
  color: var(--color-accent);
}
.breadcrumb-item a:hover {
  text-decoration: underline;
}
.breadcrumb-current {
  color: var(--color-text-muted);
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header { padding: var(--spacing-xs) 0; }
  .header-container { flex-direction: column; gap: var(--spacing-xs); }
  .logo { font-size: 1.1rem; }
  .logo-icon { height: 1.2em; }
  .main-nav ul { gap: var(--spacing-sm); flex-wrap: wrap; justify-content: center; }
  .main-nav a { font-size: 0.75rem; }
  .article-header { padding: var(--spacing-xs) 0; margin-bottom: var(--spacing-xs); }
  .article-title { font-size: 1.6rem; margin-top: var(--spacing-xs); }
  .summary-grid { grid-template-columns: 1fr; }
  .bar-label { width: 100px; font-size: 0.75rem; }
  .sns-btn { padding: 8px 14px; font-size: 0.7rem; }
  .sns-floating { display: none; }
  .sns-floating-mobile {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    justify-content: center;
    gap: 1px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }
  .sns-floating-mobile.is-visible { opacity: 1; visibility: visible; }
  .sns-floating-mobile .sns-float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex: 1;
    padding: 10px 0;
    color: #fff;
    text-decoration: none;
    font-size: 0.65rem;
    font-weight: 500;
  }
  .sns-floating-mobile .sns-float-btn svg { width: 16px; height: 16px; fill: currentColor; }
  .container { padding-bottom: 30px; }
  .ranking-item { padding: 10px 12px; gap: 10px; }
  .ranking-num { font-size: 1.1rem; min-width: 24px; }
  .ranking-title { font-size: 0.8rem; }
}
/* Chart image container */
.chart-image {
  margin: 16px 0 24px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.chart-image img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 769px) and (max-width: 1160px) {
  .sns-floating { left: 8px; }
}