:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1b1d21;
  --muted: #5d6470;
  --line: #e3e4e8;
  --accent: #2f5bea;
  --accent-text: #ffffff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #181b21;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --line: #2a2f38;
    --accent: #7c9cff;
    --accent-text: #0d1020;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
header, main, footer { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  padding-bottom: 24px;
}
.brand { font-weight: 700; font-size: 20px; letter-spacing: 0.06em; color: var(--text); text-decoration: none; }
nav { display: flex; gap: 20px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); }
main { padding-bottom: 48px; }
.hero { padding: 32px 0 16px; }
h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.15; margin: 16px 0 12px; }
h2 { font-size: 22px; margin: 40px 0 12px; }
h3 { font-size: 17px; margin: 0 0 6px; }
.lead { font-size: 18px; color: var(--muted); max-width: 680px; }
.button {
  display: inline-block;
  margin: 8px 8px 0 0;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
}
.button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 16px 0;
}
.grid .card { margin: 0; }
.card p:last-child { margin-bottom: 0; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
@media (max-width: 520px) {
  .facts { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: 10px; }
}
.updated { color: var(--muted); font-size: 14px; }
footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  padding-bottom: 32px;
  color: var(--muted);
  font-size: 14px;
}