:root { color-scheme: light dark; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; background: #fff; color: #111; }
@media (prefers-color-scheme: dark) { body { background: #0f1115; color: #eee; } a { color: #8ab4ff; } }
.placeholder { max-width: 560px; margin: 20vh auto; padding: 0 16px; text-align: center; line-height: 1.5; }