:root {
  --navy: #1e2a8c;
  --teal: #0b7f83;
  --ink: #111632;
  --muted: #4b5470;
  --bg: #f3f5fa;
  --card: #ffffff;
  --line: #e4e8f1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --navy: #9aa8ff;
    --teal: #3fd0d0;
    --ink: #e8ebf5;
    --muted: #a3abc2;
    --bg: #0d1126;
    --card: #161c36;
    --line: #262d4d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}
header { margin-bottom: 28px; }
.brand { color: var(--navy); font-weight: 800; letter-spacing: -0.02em; font-size: 28px; text-decoration: none; }
.brand span { color: var(--teal); }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 20px; margin: 32px 0 8px; color: var(--navy); }
.updated { color: var(--muted); font-size: 14px; margin: 0; }
article { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 28px; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--teal); }
nav.links { display: grid; gap: 12px; }
nav.links a {
  display: block; padding: 18px 20px; border-radius: 16px; background: var(--card);
  border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 700;
}
nav.links a small { display: block; color: var(--muted); font-weight: 400; }
footer { margin-top: 28px; color: var(--muted); font-size: 14px; }
footer a { margin-right: 14px; }