:root {
  color-scheme: light;
  --ink: #20242c;
  --muted: #667080;
  --accent: #192d4a;
  --accent-soft: #edf1f6;
  --paper: #ffffff;
  --canvas: #f6f5f2;
  --line: #d9dde3;
  --radius: 0.5rem;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { font-size: 100%; }
body { margin: 0; color: var(--ink); background: var(--canvas); line-height: 1.75; overflow-wrap: anywhere; }
a { color: var(--accent); text-underline-offset: 0.18em; }
.shell { width: min(100% - 2rem, 70rem); margin-inline: auto; }
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem; padding-block: 1rem; }
.site-name { color: var(--ink); font-family: serif; font-size: 1.15rem; font-weight: 700; text-decoration: none; }
.test-badge { padding: 0.15rem 0.55rem; color: var(--accent); background: var(--accent-soft); border: 1px solid #b8c4d4; border-radius: 999px; font-size: 0.78rem; font-weight: 700; }
.header-inner nav { display: flex; gap: 1rem; width: 100%; }
.header-inner nav a { font-weight: 700; text-decoration: none; }
.main-content { min-height: 65vh; padding-block: 2rem 3.5rem; }
.hero { padding: 2rem 0 2.5rem; border-bottom: 1px solid var(--line); }
.hero h1, .page-header h1 { max-width: 18em; margin: 0.25rem 0 0.75rem; font-family: serif; font-size: clamp(2rem, 8vw, 3.5rem); line-height: 1.25; }
.eyebrow, .card-kicker { margin: 0; color: var(--accent); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em; }
.actions { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1.5rem; }
.button { display: inline-block; padding: 0.7rem 1.1rem; color: #fff; background: var(--accent); border: 1px solid var(--accent); border-radius: 0.25rem; font-weight: 700; text-align: center; text-decoration: none; }
.button-secondary { color: var(--accent); background: transparent; }
section { margin-top: 2.5rem; }
h2 { margin-bottom: 0.75rem; font-family: serif; font-size: 1.55rem; }
.summary-grid, .card-list { display: grid; gap: 1rem; }
.summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.summary-card, .card { min-width: 0; padding: 1.25rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.summary-card { display: flex; flex-direction: column; }
.summary-card strong { color: var(--accent); font-family: serif; font-size: 2rem; }
.card h2, .card h3 { margin: 0 0 0.5rem; }
.card p:last-child { margin-bottom: 0; }
.card-child { margin-left: 1rem; border-left: 0.25rem solid #b8c4d4; }
.notice { padding: 1rem; background: var(--accent-soft); border-left: 0.25rem solid var(--accent); }
.muted { color: var(--muted); }
.detail-list { display: grid; gap: 0; margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.detail-list > div, .mini-details > div { display: grid; gap: 0.35rem; padding: 1rem; border-bottom: 1px solid var(--line); }
.detail-list > div:last-child, .mini-details > div:last-child { border-bottom: 0; }
.detail-list dt, .mini-details dt { color: var(--accent); font-weight: 700; }
.detail-list dd, .mini-details dd { min-width: 0; margin: 0; }
.detail-list dd p { margin: 0.4rem 0 0; }
.status-label { color: var(--accent); font-weight: 700; }
.info-card + .info-card { margin-top: 1rem; }
.mini-details { margin: 1rem 0 0; }
.source-list { padding-left: 1.25rem; }
.source-list li + li { margin-top: 0.5rem; }
.external-link { margin-top: 0.5rem; }
.verified-at { margin-top: 2.5rem; color: var(--muted); font-size: 0.9rem; }
.page-header { padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.25rem; color: var(--muted); font-size: 0.9rem; }
.prose { max-width: 46rem; }
.site-footer { padding-block: 2rem; color: #e9edf2; background: var(--accent); }
.footer-inner { display: grid; gap: 1rem; }
.footer-inner p { margin: 0; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-inner a { color: #fff; }

@media (min-width: 48rem) {
  .shell { width: min(100% - 4rem, 70rem); }
  .header-inner nav { width: auto; margin-left: auto; }
  .main-content { padding-block: 3rem 5rem; }
  .actions { flex-direction: row; }
  .card-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .detail-list > div, .mini-details > div { grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr); gap: 1rem; }
  .card-list.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-inner { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
}