.pct-stack { display: grid; gap: 18px; }
.pct-block + .pct-block { border-top: 1px solid var(--line); padding-top: 18px; }
.pct-title { font-size: 1.02rem; margin: 0 0 10px; }
.pct-row { display: grid; grid-template-columns: 1fr; gap: 0 12px; align-items: end; }
.pct-word { display: none; }
.pct-btn { margin-bottom: 14px; }
.pct-btn .btn { width: 100%; }
.pct-block .tool-result { margin-top: 4px; }
@media (min-width: 720px) {
  .pct-row { grid-template-columns: 1fr auto 1fr auto; align-items: start; }
  .pct-word { display: block; padding-top: 40px; color: var(--muted); font-weight: 600; white-space: nowrap; }
  .pct-btn { margin-top: 30px; }
  .pct-btn .btn { width: auto; }
}