:root {
  --bg: #ffffff;
  --surface: #f4f7fb;
  --text: #102033;
  --muted: #5b6b7d;
  --line: #dde4ec;
  --accent: #0b8fe6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c141e;
    --surface: #142233;
    --text: #e8eef5;
    --muted: #9aaabd;
    --line: #26384c;
    --accent: #3baef5;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.bar {
  max-width: 820px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; margin-right: auto; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--accent); font-weight: 600; }
main { max-width: 820px; margin: 0 auto; padding: 24px 16px 56px; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 8px 0 4px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
h3 { font-size: 1.05rem; margin: 20px 0 6px; }
.meta { color: var(--muted); margin: 0 0 20px; }
a { color: var(--accent); }
.summary {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 4px 18px;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { background: var(--surface); }
li { margin: 4px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 20px 0; }
.card {
  display: block;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}
.card strong { display: block; color: var(--accent); margin-bottom: 4px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
footer .bar { padding: 18px 16px; }