:root { --bg: #fff; --fg: #1a1f2b; --muted: #5b6475; --accent: #004AAD; --line: #e4e7ee; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #11151c; --fg: #e8ebf1; --muted: #9aa3b5; --accent: #6ea4ff; --line: #262d3a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
.brand { color: var(--accent); font-weight: 700; letter-spacing: .12em; margin: 0 0 8px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
.muted { color: var(--muted); margin-top: 0; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
a { color: var(--accent); }
.foot { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }