.bvy-form { max-width: 440px; padding: 16px; border: 1px solid #e3e3e3; border-radius: 12px; background:#fff; }
.bvy-field { display:block; margin: 0 0 12px; }
.bvy-label { display:block; font-weight:600; margin-bottom:6px; }
.bvy-input { width:100%; padding:10px; border:1px solid #ccc; border-radius:10px; }
.bvy-btn { margin-top:8px; padding:10px 14px; border-radius:10px; border:none; background:#222; color:#fff; cursor:pointer; }
.bvy-btn:disabled { opacity:.6; cursor:default; }
.bvy-result { margin-top:10px; font-weight:600; }
.bvy-result.ok { color:#0a0; }
.bvy-result.err { color:#b00; }