:root {
  --navy: #15316e;
  --blue: #1b4699;
  --text: #1c2b4a;
  --muted: #5a6b8c;
  --bg: #f4f6fa;
  --border: #d7deeb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header {
  background: var(--navy);
  color: #fff;
  padding: 14px 0;
}
header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.logo { font-size: 22px; }
select.lang {
  font: inherit;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}
main { background: #fff; margin: 24px auto; padding: 28px 24px 36px; border-radius: 16px; border: 1px solid var(--border); }
h1 { color: var(--navy); font-size: 1.7em; margin: 0 0 4px; }
h2 { color: var(--navy); font-size: 1.15em; margin: 26px 0 8px; }
p { margin: 8px 0; }
.updated { color: var(--muted); font-size: 0.9em; margin-bottom: 18px; }
.intro { font-size: 1.02em; }
a { color: var(--blue); word-break: break-word; }
footer { color: var(--muted); font-size: 0.85em; padding-bottom: 30px; text-align: center; }
ul.langlist { columns: 3; list-style: none; padding: 0; }
ul.langlist li { margin: 6px 0; }
@media (max-width: 560px) { ul.langlist { columns: 2; } }