:root {
  color-scheme: light dark;
  --bg: #fbfbfd;
  --surface: #ffffff;
  --fg: #11131a;
  --muted: #5d6475;
  --line: #e4e7ee;
  --accent: #1f3a93;
  --radius: 16px;
  --max: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0e13;
    --surface: #151821;
    --fg: #eef0f6;
    --muted: #98a0b3;
    --line: #242936;
    --accent: #8ea6ff;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 48px 20px 72px; }

header.site { display: flex; align-items: baseline; gap: 12px; margin-bottom: 40px; }
header.site a.home { font-weight: 700; font-size: 1.05rem; color: var(--fg); text-decoration: none; letter-spacing: -0.01em; }
header.site span { color: var(--muted); font-size: 0.9rem; }

h1 { font-size: clamp(1.9rem, 6vw, 2.6rem); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 1.15rem; letter-spacing: -0.01em; margin: 40px 0 12px; }
h3 { font-size: 1rem; margin: 28px 0 8px; }
p { margin: 0 0 16px; }
.lead { font-size: 1.12rem; color: var(--muted); }
a { color: var(--accent); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 16px 0;
}
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; margin: 0; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }

ul { margin: 0 0 16px; padding-left: 20px; }
li { margin-bottom: 6px; }

footer.site {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
footer.site a { color: var(--muted); }

.en { color: var(--muted); font-size: 0.95rem; }

@media (max-width: 480px) {
  .wrap { padding: 32px 18px 56px; }
  dl.facts { grid-template-columns: 1fr; gap: 2px; }
  dl.facts dd { margin-bottom: 10px; }
}