:root{--bg:#f6f7f9;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--accent:#111827;--ok:#0f766e;--warn:#b45309;--bad:#b91c1c}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at top left,#fff 0,var(--bg) 36rem);color:var(--text)}.shell{width:min(1120px,calc(100% - 32px));margin:32px auto}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 18px 50px rgba(15,23,42,.06);padding:24px;margin-bottom:20px}.hero{display:flex;justify-content:space-between;gap:24px;align-items:flex-start}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--muted);font-weight:700}h1,h2{margin:0 0 10px}h1{font-size:clamp(30px,4vw,48px);line-height:1}h2{font-size:20px}code{background:#f3f4f6;border:1px solid var(--line);padding:2px 6px;border-radius:8px}.muted,.hint,small{color:var(--muted)}.hint{font-size:14px;margin-bottom:0}.grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px}.test-grid{display:grid;gap:12px}.button-row{display:flex;gap:10px;flex-wrap:wrap}.badge{border-radius:999px;padding:10px 14px;background:#f3f4f6;color:var(--muted);font-weight:700;white-space:nowrap}.badge.ok{background:#ccfbf1;color:var(--ok)}.badge.warn{background:#fef3c7;color:var(--warn)}.badge.bad{background:#fee2e2;color:var(--bad)}.warning{border-color:#fde68a;background:#fffbeb}.hidden{display:none}.qr-box{min-height:320px;border:1px dashed var(--line);border-radius:20px;display:grid;place-items:center;padding:18px;background:#fafafa}.qr-box img{width:min(280px,100%);height:auto;border-radius:12px}form{display:grid;gap:16px}label{display:grid;gap:8px;font-weight:700}label span{font-size:14px}input,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:#fff}textarea{resize:vertical}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid var(--line);border-radius:18px;padding:14px}.switch-row span{display:grid;gap:3px}.switch-row input{width:22px;height:22px}button{cursor:pointer;border:0;background:var(--accent);color:white;border-radius:14px;padding:13px 16px;font-weight:800;font:inherit}button.secondary{background:#f3f4f6;color:var(--text)}button:disabled{opacity:.6;cursor:not-allowed}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.events{display:grid;gap:10px;margin-top:14px}.event{border:1px solid var(--line);border-radius:16px;padding:12px;display:grid;gap:4px;background:#fff}.event-top{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.event-message{white-space:pre-wrap;word-break:break-word}@media(max-width:820px){.hero,.grid{grid-template-columns:1fr;display:grid}}