:root { --ink:#1f2937; --muted:#6b7280; --line:#e5e7eb; --accent:#1d4ed8; --bg:#ffffff; }
@media (prefers-color-scheme: dark) { :root { --ink:#e5e7eb; --muted:#9ca3af; --line:#374151; --accent:#93c5fd; --bg:#111827; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font:16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 20px 80px; }
h1 { font-size: 1.9rem; line-height:1.25; margin: 0 0 4px; }
.meta { color: var(--muted); margin: 0 0 32px; font-size: .95rem; }
h2 { font-size: 1.2rem; margin: 36px 0 8px; padding-top: 12px; border-top: 1px solid var(--line); }
h3 { font-size: 1.02rem; margin: 20px 0 6px; }
p, li { margin: 0 0 10px; }
ul { padding-left: 22px; }
a { color: var(--accent); }
table { border-collapse: collapse; width: 100%; margin: 8px 0 16px; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); padding: 8px 10px 8px 0; }
th { color: var(--muted); font-weight: 600; }
footer { margin-top: 48px; color: var(--muted); font-size: .9rem; }