/* ぽかぽか米国グラフ 共通スタイル */
:root {
  --ink: #1f2933;
  --muted: #5b6770;
  --line: #e2e8ee;
  --bg: #f5f7f9;
  --card: #ffffff;
  --primary: #2b6a99;
  --primary-weak: #eaf2f8;
  --accent: #c9467a;
  --accent-weak: #fbeef4;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic Medium", "Yu Gothic", Meiryo, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-underline-offset: 2px; }
a:hover { color: #1d4f75; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: #fff; padding: 6px 10px; z-index: 10; }

/* ---------- ヘッダー ---------- */
.site-header {
  background: var(--card);
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, #7cc8e0, #e7a3c4) 1;
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.brand img { border-radius: 8px; }
.global-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; flex-wrap: wrap; }
.global-nav a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: 0.92rem; }
.global-nav a:hover { background: var(--primary-weak); }
.global-nav a[aria-current="page"] { background: var(--primary-weak); color: var(--primary); font-weight: 700; }

/* ---------- 本文まわり ---------- */
.main { padding-top: 20px; padding-bottom: 48px; }
.breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 12px; }
.breadcrumb a { color: var(--muted); }
.article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 32px 32px;
}
h1 { font-size: clamp(1.45rem, 4.2vw, 1.9rem); line-height: 1.45; margin: 0 0 10px; }
.meta { font-size: 0.85rem; color: var(--muted); margin: 0 0 18px; }
.meta .sep { margin: 0 0.6em; color: #c3ccd3; }
.lead { font-size: 1.05rem; background: var(--primary-weak); border-radius: 10px; padding: 14px 18px; margin: 0 0 22px; }

.prose h2 {
  font-size: 1.3rem; line-height: 1.5; margin: 40px 0 14px; padding: 4px 0 4px 12px;
  border-left: 5px solid var(--primary);
}
.prose h3 { font-size: 1.08rem; margin: 28px 0 10px; }
.prose p, .prose li { font-size: 1rem; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 4px 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.92rem; margin: 14px 0; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg); white-space: nowrap; }
.prose blockquote { margin: 16px 0; padding: 10px 16px; border-left: 4px solid var(--line); color: var(--muted); background: var(--bg); }
.prose .owner {
  background: var(--accent-weak); border: 1px solid #f1cfdd; border-radius: var(--radius);
  padding: 4px 20px 10px; margin: 36px 0 10px;
}
.prose .owner h2 { border-left-color: var(--accent); margin-top: 18px; }
.prose .point {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 18px; margin: 18px 0;
}

/* ---------- グラフ ---------- */
.chart { margin: 0 0 24px; }
.chart img { display: block; width: 100%; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.chart figcaption { font-size: 0.8rem; color: var(--muted); margin-top: 6px; }
.chart-date { margin-left: 0.5em; }
.chart-toggle { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; margin-bottom: 10px; }
.chart-toggle button {
  border: 0; background: transparent; padding: 6px 14px; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 0.88rem; color: var(--muted);
}
.chart-toggle button[aria-pressed="true"] { background: #fff; color: var(--primary); font-weight: 700; box-shadow: 0 1px 4px rgba(0,0,0,.12); }

/* ---------- 数字で見る現在地 ---------- */
.data-box { border: 1px solid #cfe0ec; background: #f7fbfe; border-radius: var(--radius); padding: 16px 18px 12px; margin: 0 0 8px; }
.data-box h2 { font-size: 1.15rem; margin: 0 0 4px; }
.data-box-lead { font-size: 0.84rem; color: var(--muted); margin: 0 0 12px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.stat-label { font-size: 0.8rem; color: var(--muted); line-height: 1.5; }
.stat-value { font-size: 1.25rem; font-weight: 700; color: var(--ink); line-height: 1.5; margin-top: 2px; }
.stat-note { font-size: 0.75rem; color: var(--muted); line-height: 1.5; margin-top: 2px; }
.data-table { margin-top: 12px; }
.data-table summary { cursor: pointer; color: var(--primary); font-size: 0.9rem; }
.table-wrap { overflow-x: auto; margin-top: 8px; }
.data-table table { border-collapse: collapse; width: 100%; font-size: 0.86rem; background: #fff; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 6px 10px; text-align: right; white-space: nowrap; }
.data-table th { background: var(--bg); }
.data-table td:first-child, .data-table th:first-child { text-align: left; }
.data-notes { font-size: 0.8rem; color: var(--muted); margin: 10px 0 0; padding-left: 1.2em; }

/* ---------- 出典・関連・前後 ---------- */
.sources, .related { margin-top: 36px; }
.sources h2, .related h2 { font-size: 1.1rem; margin: 0 0 8px; }
.sources ul, .related ul { padding-left: 1.2em; margin: 0 0 8px; }
.sources p { font-size: 0.88rem; color: var(--muted); }
.related li span { display: block; font-size: 0.85rem; color: var(--muted); }
.prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 32px; }
.prev-next a { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; text-decoration: none; font-size: 0.92rem; }
.prev-next a span { display: block; font-size: 0.78rem; color: var(--muted); }
.prev-next .next { text-align: right; }

/* ---------- トップ・一覧 ---------- */
.hero { padding: 8px 0 4px; }
.hero h1 { margin-bottom: 6px; }
.hero-lead { color: var(--muted); margin: 0 0 18px; }
.snapshot { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 20px; }
.snapshot h2 { font-size: 1.1rem; margin: 0 0 10px; }
.snap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
@media (max-width: 640px) { .snap-grid { grid-template-columns: repeat(2, 1fr); } }
.snap-item { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; text-decoration: none; color: var(--ink); }
.snap-item:hover { border-color: var(--primary); }
.snap-label { display: block; font-size: 0.78rem; color: var(--muted); }
.snap-value { display: block; font-size: 1.2rem; font-weight: 700; }
.snap-when { display: block; font-size: 0.75rem; color: var(--muted); }
.small { font-size: 0.8rem; color: var(--muted); margin: 8px 0 0; }
.home-intro { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 24px 12px; margin-bottom: 8px; }
.cat { margin-top: 30px; }
.cat h2 { font-size: 1.3rem; margin: 0 0 2px; }
.cat-desc { color: var(--muted); margin: 0 0 12px; font-size: 0.92rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); }
.card:hover { border-color: var(--primary); }
.card img { display: block; width: 100%; border-bottom: 1px solid var(--line); }
.card-body { display: block; padding: 10px 14px 12px; }
.card-title { display: block; font-weight: 700; line-height: 1.5; }
.card-desc { font-size: 0.86rem; color: var(--muted); margin: 4px 0; line-height: 1.6; }
.card-date { display: block; font-size: 0.75rem; color: var(--muted); }
.toc { display: flex; flex-wrap: wrap; gap: 6px 14px; padding: 0; list-style: none; margin: 0 0 8px; }
.graph-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 14px; }
.graph-item h3 { margin: 0 0 4px; font-size: 1.08rem; }
.graph-item p { margin: 0 0 8px; color: var(--muted); font-size: 0.9rem; }
.graph-item img { display: block; border: 1px solid var(--line); border-radius: 8px; }
.graph-meta { margin-top: 8px !important; }
.notice { background: var(--accent-weak); padding: 10px 14px; border-radius: 8px; }

/* ---------- フッター ---------- */
.site-footer { background: #26323b; color: #d5dde3; margin-top: 24px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 24px; padding-top: 28px; padding-bottom: 12px; }
.site-footer a { color: #d5dde3; }
.site-footer ul { list-style: none; padding: 0; margin: 0; font-size: 0.9rem; }
.site-footer li { margin: 4px 0; }
.footer-brand { font-weight: 700; margin: 0 0 6px; color: #fff; }
.footer-text { font-size: 0.85rem; margin: 0; line-height: 1.7; }
.footer-head { font-weight: 700; margin: 0 0 6px; color: #fff; font-size: 0.9rem; }
.copyright { text-align: center; font-size: 0.8rem; color: #9fb0bc; margin: 0; padding: 12px 16px 20px; }

/* ---------- スマホ ---------- */
@media (max-width: 640px) {
  .article { padding: 20px 16px 24px; border-radius: 10px; }
  .home-intro { padding: 2px 16px 8px; }
  .global-nav ul { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .global-nav { width: 100%; }
  .global-nav a { white-space: nowrap; font-size: 0.85rem; padding: 6px 7px; }
  .prose h2 { font-size: 1.18rem; }
  .prose th, .prose td { min-width: 7.5em; font-size: 0.86rem; }
  .prose td:first-child, .prose th:first-child { min-width: 6em; }
  .footer-inner { grid-template-columns: 1fr; gap: 16px; }
  .prev-next { grid-template-columns: 1fr; }
  .prev-next .next { text-align: left; }
  .stat-value { font-size: 1.1rem; }
}