:root {
  color-scheme: dark;
  font: 15px/1.75 system-ui, -apple-system, 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic UI', sans-serif;
  color: #dde3ec;
  background: #101318;
  --bg: #101318;
  --panel: #171b22;
  --raised: #1d232c;
  --border: #2b323d;
  --text: #dde3ec;
  --strong: #ffffff;
  --muted: #93a1b3;
  --accent: #f0a13c;
  --accent-soft: rgba(240, 161, 60, 0.1);
  --good: #78c69a;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: #ffc36f; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: fixed;
  z-index: 10;
  top: 8px;
  left: 8px;
  padding: 8px 12px;
  transform: translateY(-160%);
  border-radius: 4px;
  background: var(--accent);
  color: #151515;
}
.skip-link:focus { transform: none; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 58px;
  padding: 10px max(20px, calc((100% - 1080px) / 2));
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.brand {
  color: var(--strong);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.site-header nav,
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.site-header nav a { color: var(--muted); font-size: 13px; }

/* 言語切替（日本語 ⇄ English）。タグと同じピル形で、ヘッダーの右端に置く。 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  margin-left: auto;
  padding: 2px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--raised);
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}
.lang-switch:hover { border-color: #805728; color: #ffc36f; }

main {
  width: min(1080px, calc(100% - 32px));
  margin: 34px auto 56px;
}

.breadcrumbs { margin-bottom: 18px; color: var(--muted); font-size: 13px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 5px 9px; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { margin-left: 9px; color: #596474; content: '/'; }
.breadcrumbs a { color: var(--muted); }

.hero,
.card,
.article-body,
.index-section {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
}

.hero { padding: 28px 32px; }
.hero-row { display: flex; align-items: flex-start; gap: 20px; }
.item-icon,
.item-icon-missing {
  flex: 0 0 auto;
  width: 72px;
  height: 72px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--raised);
  object-fit: contain;
}
.item-icon-missing {
  display: grid;
  place-items: center;
  padding: 6px;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

.eyebrow { margin: 0 0 4px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: 0.05em; }
h1, h2, h3 { color: var(--strong); line-height: 1.4; }
h1 { margin: 0; font-size: clamp(25px, 5vw, 36px); }
h2 { margin: 34px 0 14px; font-size: 22px; }
h3 { margin: 0 0 12px; font-size: 17px; }
h4 { margin: 20px 0 8px; color: var(--strong); font-size: 14px; }
p { margin: 0 0 14px; }

.lead { max-width: 760px; margin: 12px 0 0; color: #c3ccd8; font-size: 16px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 0; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--raised);
  color: #c8d0dc;
  font-size: 12px;
  overflow-wrap: anywhere;
}
.tag.accent { border-color: #805728; background: var(--accent-soft); color: #ffc36f; }

.cta {
  display: inline-block;
  margin-top: 20px;
  padding: 11px 17px;
  border: 1px solid #d8892e;
  border-radius: 5px;
  background: var(--accent);
  color: #18130d;
  font-weight: 700;
  text-decoration: none;
}
.cta:hover { background: #ffc36f; color: #18130d; }

.section-heading { display: flex; align-items: baseline; gap: 10px; }
.count { color: var(--muted); font-size: 13px; font-weight: 400; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card { padding: 20px; }
.card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }

.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 14px 0; }
.facts div,
.metrics > dl,
.metrics > .ingredient-metrics { margin: 0; padding: 10px 12px; border-radius: 4px; background: var(--raised); }
.facts dt,
.metrics dt { color: var(--muted); font-size: 11px; }
.facts dd,
.metrics dd { margin: 2px 0 0; color: var(--strong); font-variant-numeric: tabular-nums; }

.flow-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.rate-list,
.metric-list,
.use-list,
.link-list,
.article-list { margin: 0; padding: 0; list-style: none; }
.rate-list li,
.metric-list li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--border); }
.rate-list li:last-child,
.metric-list li:last-child { border-bottom: 0; }
.num { white-space: nowrap; font-variant-numeric: tabular-nums; }

.metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 16px 0 0; }
.ingredient-metrics { grid-column: 1 / -1; }

.use-list { display: grid; gap: 10px; }
.use-list > li { padding: 16px 18px; border: 1px solid var(--border); border-radius: 5px; background: var(--panel); }
.use-summary { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 18px; }
.use-summary strong { color: var(--strong); }

.empty-state { padding: 18px; border-left: 2px solid var(--accent); background: var(--accent-soft); color: #c3ccd8; }

.index-section { margin-top: 18px; padding: 22px 24px; }
.index-section h2 { margin-top: 0; }
.link-list { columns: 3 220px; column-gap: 30px; }
.link-list li { break-inside: avoid; margin-bottom: 8px; }
.link-list small { color: var(--muted); }

.article-list { display: grid; gap: 12px; margin-top: 20px; }
.article-list a { display: block; padding: 18px 20px; border: 1px solid var(--border); border-radius: 5px; background: var(--panel); text-decoration: none; }
.article-list strong { display: block; color: var(--strong); font-size: 17px; }
.article-list span { display: block; margin-top: 5px; color: #b7c0cd; }

.article-body { max-width: 820px; margin: 20px auto 0; padding: 28px 34px; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { line-height: 1.9; }
.article-body li { margin-bottom: 8px; }
.article-note { padding: 12px 14px; border-left: 2px solid var(--accent); background: var(--accent-soft); color: #c3ccd8; }
.comparison-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
.comparison-table th,
.comparison-table td { padding: 9px 11px; border: 1px solid var(--border); text-align: left; }
.comparison-table th { background: var(--raised); color: var(--strong); }
.comparison-table td.num { text-align: right; }
.version { color: var(--muted); font-size: 12px; }

.site-footer {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 11px;
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 5px; padding: 10px 16px; }
  .lang-switch { margin-left: 0; }
  main { margin-top: 20px; }
  .hero, .article-body { padding: 22px 20px; }
  .grid, .facts, .flow-columns, .metrics { grid-template-columns: 1fr; }
  .ingredient-metrics { grid-column: auto; }
  .hero-row { flex-direction: column; gap: 14px; }
  .hero-row > div { min-width: 0; width: 100%; }
  .item-icon, .item-icon-missing { width: 56px; height: 56px; }
  .link-list { columns: 1; }
}