:root { --ink: #1f2a1f; --muted: #5f6f5f; --bg: #fbfaf6; --accent: #3f7d3a; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #e6ece4; --muted: #a3b0a1; --bg: #141a14; --accent: #8cc784; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.6 Georgia, "Times New Roman", serif; color: var(--ink); background: var(--bg); }
header, main, footer { max-width: 42rem; margin: 0 auto; padding: 1rem; }
header { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--muted); }
.brand { font-weight: bold; color: var(--ink); text-decoration: none; }
nav a { color: var(--accent); margin-left: 1rem; }
article { margin: 2rem 0; }
h1 { font-size: 1.6rem; line-height: 1.25; }
.meta { color: var(--muted); font-size: 0.9rem; }
footer { color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--muted); }