:root{color:#101214;background:#f6f7f8;font-family:Inter,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0}.wrap{max-width:680px;margin:0 auto;padding:20px}.card{background:#fff;border:1px solid #e4e7eb;border-radius:16px;margin:12px 0;padding:16px}button{cursor:pointer;border:0;border-radius:12px;margin:4px;padding:12px 16px;font-weight:700}.primary{color:#fff;background:#111827}.muted{color:#667085}.grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.qr{word-break:break-all;background:#f2f4f7;border-radius:8px;padding:10px;font-size:11px}