:root {
  --ink: #14181f;
  --muted: #5a6270;
  --navy: #0b2257;
  --red: #e8401f;
  --line: #e3e6eb;
  --bg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e9ecf1; --muted: #a3abb8; --line: #2a3140; --bg: #0f131a; --navy: #8fb0ff; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
}
header, main, footer { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; gap: 12px; padding-top: 28px; padding-bottom: 8px; }
header img { width: 40px; height: 40px; border-radius: 9px; }
header a { color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; }
main { padding-top: 24px; padding-bottom: 48px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--navy); }
ul { padding-left: 22px; }
.rule { width: 72px; height: 4px; border-radius: 2px; background: var(--red); margin: 18px 0 28px; }
footer { border-top: 1px solid var(--line); padding-top: 18px; padding-bottom: 40px; color: var(--muted); font-size: 15px; }
footer a { color: var(--muted); margin-right: 16px; }