:root{color-scheme:light;font-family:-apple-system,Segoe UI,Roboto,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f3f4f6;color:#111827}#root{max-width:480px;margin:0 auto;min-height:100vh;background:#f3f4f6}.topbar{background:linear-gradient(90deg,#1d4ed8,#2563eb 60%,#f97316);color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between}.topbar b{font-size:17px}.topbar .link{color:#fff;background:#fff3;border:none;padding:6px 12px;border-radius:8px;font-weight:700;cursor:pointer}.wrap{padding:16px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:16px;margin-bottom:14px}.h{font-size:18px;font-weight:800;margin:0 0 4px}.muted{color:#6b7280;font-size:13px}label{display:block;font-size:13px;color:#374151;font-weight:600;margin:12px 0 6px}input{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:10px;font-size:16px}.btn{width:100%;padding:14px;border:none;border-radius:12px;background:#2563eb;color:#fff;font-size:16px;font-weight:800;cursor:pointer;margin-top:12px}.btn:disabled{opacity:.5}.btn.green{background:#16a34a}.btn.grey{background:#e5e7eb;color:#6b7280}.btn.ghost{background:#fff;color:#374151;border:1px solid #d1d5db}.center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center}.result-ok{border:2px solid #16a34a}.result-bad{border:2px solid #dc2626}.big{font-size:26px;font-weight:900}.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:800}.stat{flex:1;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:12px;text-align:center}.stat .n{font-size:20px;font-weight:900}.stat .l{font-size:11px;color:#6b7280}.row{display:flex;gap:10px}#reader{width:100%;border-radius:12px;overflow:hidden}.err{color:#dc2626;font-size:13px;margin-top:8px}