:root{font-family:system-ui,sans-serif;color:#1b1b1b;background:#fff}body{margin:0;padding:env(safe-area-inset-top) 16px 32px}main{max-width:520px;margin:0 auto}h1{font-size:1.3rem;color:#2f7d32}h2{font-size:1.05rem;margin-top:1.5rem}button{display:block;width:100%;margin:8px 0;padding:12px;font-size:1rem;border-radius:10px;border:1px solid #2f7d32;background:#2f7d32;color:#fff}button:disabled{opacity:.4}pre{white-space:pre-wrap;word-break:break-all;background:#f3f3f3;padding:8px;border-radius:8px;font-size:.8rem}.alerta{background:#fff3cd;padding:8px;border-radius:8px}.ok{color:#2f7d32;font-weight:600}.nota{color:#555;font-size:.9rem}