:root { --brand: #0b2a66; --paper: #f4f5f7; --surface: #fff; --ink: #111827; --ink-2: #4b5563; --line: #dde1e7; --mark: #fff3bf; }
@media (prefers-color-scheme: dark) { :root { --brand: #9db8ff; --paper: #0f1115; --surface: #1a1d23; --ink: #f2f4f7; --ink-2: #b9c0cb; --line: #2c313a; --mark: #4a3b00; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.65 -apple-system, "SF Pro Text", "Helvetica Neue", Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { margin-bottom: 24px; }
header .app { color: var(--brand); font-weight: 700; font-size: .95rem; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 6px 0 4px; }
.updated { color: var(--ink-2); font-size: .9rem; }
section { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 18px 6px; margin: 14px 0; }
h2 { font-size: 1.15rem; margin: 0 0 8px; }
p, li { color: var(--ink); } ul { padding-inline-start: 22px; margin-top: 4px; }
.callout { border-inline-start: 4px solid #b42318; }
a { color: var(--brand); }
mark { background: var(--mark); color: inherit; padding: 0 4px; border-radius: 4px; }
nav { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; font-size: .95rem; }

header .app a { color: inherit; text-decoration: none; }
nav a { text-decoration: none; font-weight: 600; }