:root{color-scheme:light dark;--bg:#ffffff;--fg:#111111;--muted:#555;--border:#ddd;--accent:#0b5fff;--warn:#b45309;--code-bg:#f5f5f5}@media (prefers-color-scheme:dark){:root{--bg:#0b0b0b;--fg:#f0f0f0;--muted:#aaa;--border:#333;--accent:#4d8bff;--warn:#facc15;--code-bg:#1a1a1a}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;line-height:1.5}.page{max-width:720px;margin:0 auto;padding:3rem 1.5rem}h1{font-size:2rem;margin-bottom:.5rem}p{margin:.75rem 0}code{padding:.1em .35em;border-radius:4px;font-size:.95em}.instruction,code{background:var(--code-bg)}.instruction{border:1px solid var(--border);border-radius:8px;padding:1rem 1.25rem;margin:1rem 0;white-space:pre-wrap;word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,monospace;font-size:.9rem}.btn-link,.btn-primary,.btn-secondary{display:inline-block;font:inherit;padding:.6rem 1.1rem;border-radius:6px;cursor:pointer;text-decoration:none;border:1px solid transparent}.btn-primary{background:var(--accent);color:white}.btn-secondary{background:transparent;color:var(--fg);border-color:var(--border)}.btn-link{background:transparent;color:var(--muted);padding-left:0;padding-right:0;border:none;text-decoration:underline}.warn{color:var(--warn);font-size:.9rem}