.ptbn-box{max-width:680px;border:1px solid #e5e7eb;border-radius:12px;padding:16px}.ptbn-btn{background:#111827;color:#fff;border:0;border-radius:10px;padding:.7rem 1.1rem;cursor:pointer}.ptbn-alert{padding:.8rem 1rem;border-radius:.6rem;margin:.8rem 0}.ptbn-alert-success{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}.ptbn-alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.ptbn-alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}.ptbn-msg{margin-top:.5rem;color:#374151}