:root { --ink: #0b1220; --muted: #4a5568; --line: #e2e8f0; --link: #0369a1; --bg: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --ink: #f1f5f9; --muted: #a0aec0; --line: #2d3748; --link: #38bdf8; --bg: #0b1220; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 20px 24px; }
.brand { font-weight: 700; letter-spacing: .02em; color: var(--muted); margin: 0 0 8px; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 16px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
.lead { font-size: 1.08rem; }
.meta { color: var(--muted); font-size: .95rem; }
a { color: var(--link); }
code { font-size: .9em; word-break: break-all; }
footer { max-width: 760px; margin: 0 auto; padding: 24px 20px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .92rem; }