.pcvd-wrap{background:#fff;border:1px solid #e6e6e6;border-radius:14px;padding:22px;margin:18px 0;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.pcvd-title{font-size:22px;margin:0 0 16px;border-bottom:3px solid #3cb371;padding-bottom:8px}
.pcvd-field{margin-bottom:12px}
.pcvd-field label{display:block;font-weight:600;margin-bottom:6px}
.pcvd-field input,.pcvd-field select{width:100%;padding:10px 12px;border:1px solid #d9d9d9;border-radius:10px;background:#fff;outline:none}
.pcvd-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:640px){.pcvd-grid{grid-template-columns:1fr}}
.pcvd-actions{margin-top:12px}
.pcvd-btn{background:#3cb371;color:#fff;border:none;border-radius:10px;padding:10px 18px;cursor:pointer;font-weight:600}
.pcvd-result{margin-top:14px;padding:14px;border-left:4px solid #3cb371;background:#f7fffb;border-radius:8px}
.pcvd-note{margin-top:12px;background:#fafafa;border:1px dashed #dadada;padding:12px;border-radius:10px}
details.pcvd-formula summary{cursor:pointer;font-weight:700;margin-bottom:8px}
.pcvd-sub{font-weight:700;margin-top:10px}
.pcvd-mono{font-family:ui-monospace, Menlo, Monaco, Consolas, 'Courier New', monospace}