:root{color-scheme:light dark;--bg:#fff;--fg:#0a0a0a;--muted:#6b7280;--border:#e5e7eb;--accent:#2563eb;--danger:#b91c1c}@media (prefers-color-scheme:dark){:root{--bg:#0a0a0a;--fg:#fafafa;--muted:#9ca3af;--border:#27272a;--accent:#60a5fa;--danger:#f87171}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:var(--accent)}h1{font-size:1.5rem;font-weight:600;margin:0 0 1rem}