:root {
  --fg: #1a1a1a;
  --muted: #555;
  --bg: #ffffff;
  --accent: #1a4d8f;
  --border: #e2e2e2;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

header.site {
  border-bottom: 1px solid var(--border);
}

header.site .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
}

header.site .brand {
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}

nav.lang a, nav.pages a {
  color: var(--accent);
  text-decoration: none;
  margin-left: 1rem;
}

nav.lang a:hover, nav.pages a:hover, main a:hover { text-decoration: underline; }

h1 { font-size: 1.9rem; line-height: 1.3; margin: 2rem 0 0.5rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 0.3rem; }

.effective { color: var(--muted); font-weight: 600; }

main a { color: var(--accent); }

ul { padding-left: 1.3rem; }
li { margin: 0.2rem 0; }

address {
  font-style: normal;
  background: #f6f8fa;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
}

hr.lang-divider {
  border: 0;
  border-top: 2px solid var(--border);
  margin: 3.5rem 0;
}

footer.site {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a { color: var(--accent); text-decoration: none; }

.lead { color: var(--muted); }