.pn-wrap {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  margin: 0 0 2rem;
  color: #1f2937;
}

.pn-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 1rem;
  margin-bottom: 0.85rem;
}

.pn-field label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.82rem;
  color: #4b5563;
}

.pn-field input,
.pn-field select,
.pn-out {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  font-size: 0.95rem;
  background: #fff;
  color: #111827;
}

.pn-field input:focus,
.pn-field select:focus,
.pn-out:focus {
  outline: none;
  border-color: #2196F3;
}

.pn-prefix {
  grid-column: 1 / -1;
}

.pn-prefix-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
  font-size: 0.82rem;
  color: #4b5563;
}

.pn-prefix-acts {
  display: inline-flex;
  gap: 0.75rem;
}

.pn-link {
  border: 0;
  background: none;
  padding: 0;
  color: #2563eb;
  font-size: 0.82rem;
  cursor: pointer;
}

.pn-link:hover { text-decoration: underline; }
.pn-link.is-on { font-weight: 600; }

.pn-prefix-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  font-size: 0.9rem;
  max-height: 9.5rem;
  overflow: auto;
  padding: 0.15rem 0;
}

.pn-prefix-list label {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  margin: 0;
  color: #374151;
  white-space: nowrap;
}

.pn-prefix-custom {
  margin-top: 0.45rem;
}

.pn-prefix-empty {
  margin: 0.35rem 0 0;
  font-size: 0.82rem;
  color: #9ca3af;
}

.pn-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.7rem;
}

.pn-btn {
  border: 0;
  border-radius: 6px;
  padding: 0.45rem 0.85rem;
  font-size: 0.88rem;
  cursor: pointer;
  background: #f3f4f6;
  color: #374151;
}

.pn-btn-primary {
  background: #2196F3;
  color: #fff;
}

.pn-btn:hover { filter: brightness(0.97); }

.pn-hint,
.pn-msg {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  line-height: 1.65;
  color: #6b7280;
}

.pn-msg.is-bad { color: #b91c1c; }
.pn-msg:empty { display: none; }

.pn-out {
  min-height: 220px;
  resize: vertical;
  line-height: 1.6;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.pn-intro {
  margin-top: 1.4rem;
  color: #64748b;
  font-size: 0.92rem;
  line-height: 1.75;
}

.pn-intro h2 {
  margin: 1.1rem 0 0.35rem;
  font-size: 1.05rem;
  color: #1e293b;
}

.pn-intro h2:first-child { margin-top: 0; }

.pn-intro p,
.pn-intro li { margin: 0; }

.pn-intro p + p,
.pn-intro p + ol,
.pn-intro ol + p { margin-top: 0.45rem; }

.pn-intro ol { margin: 0; padding-left: 1.2rem; }
.pn-intro li + li { margin-top: 0.2rem; }

.pn-faq { margin: 0; }
.pn-faq dt { margin-top: 0.75rem; font-weight: 600; color: #334155; }
.pn-faq dt:first-child { margin-top: 0; }
.pn-faq dd { margin: 0.2rem 0 0; }

.pn-links { margin-top: 0.7rem; }
.pn-links a { color: #2563eb; }

@media (max-width: 720px) {
  .pn-form { grid-template-columns: 1fr; }
}