:root {
  --bg: #0b0d14;
  --surface: #141826;
  --text: #e6e8f0;
  --muted: #9aa1b8;
  --accent: #7c8cff;
  --border: #252b40;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --surface: #ffffff;
    --text: #151826;
    --muted: #555c73;
    --accent: #3f4fd6;
    --border: #dfe2ec;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.brand { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
header.brand a { color: var(--accent); text-decoration: none; font-weight: 700; letter-spacing: .02em; }
h1 { font-size: 1.8rem; line-height: 1.25; margin: 8px 0 4px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
p, li { color: var(--text); }
.meta { color: var(--muted); font-size: .9rem; margin: 0 0 24px; }
a { color: var(--accent); }
ul, ol { padding-left: 1.3rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 16px 0;
}
nav.links { display: grid; gap: 12px; margin-top: 24px; }
nav.links a { display: block; text-decoration: none; }
nav.links a strong { display: block; color: var(--text); }
nav.links a span { color: var(--muted); font-size: .92rem; }
footer { margin-top: 48px; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--border); padding-top: 16px; }