:root { color-scheme: light dark; --fg: #1b1f2a; --muted: #5c6475; --bg: #ffffff; --accent: #2f6bea; }
@media (prefers-color-scheme: dark) { :root { --fg: #e6e9f0; --muted: #9aa3b5; --bg: #12151c; --accent: #7aa2ff; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 1.8rem; margin: 0.4em 0 0.1em; }
h2 { font-size: 1.15rem; margin-top: 1.8em; }
.meta { color: var(--muted); margin-top: 0; }
.back { font-size: 0.95rem; }
a { color: var(--accent); }
hr { border: 0; border-top: 1px solid var(--muted); opacity: 0.4; margin: 3em 0; }