/**
 * L14 Page 03 · 主动↔被动句型转换
 */
#l14-book .lesson-page {
  display: none;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  gap: 0.35rem;
}
#l14-book .lesson-page.active {
  display: flex;
}

#l14-book .goal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
}
@media (min-width: 640px) {
  #l14-book .goal-grid { grid-template-columns: 1fr 1fr; }
}
#l14-book .goal-card {
  padding: 0.5rem 0.65rem;
  border-radius: 12px;
  border: 2px solid #99f6e4;
  background: #f0fdfa;
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.4;
}

#l14-book .scene-frame--transform:not(:has(img)) {
  background: linear-gradient(145deg, #fffbeb, #fef3c7);
}

#l14-book .step-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
  margin: 0.4rem 0;
}
@media (min-width: 520px) {
  #l14-book .step-flow { grid-template-columns: 1fr 1fr; }
}
#l14-book .step-card {
  padding: 0.5rem 0.6rem;
  border-radius: 12px;
  border: 2px solid #cbd5e1;
  background: #fff;
  font-weight: 800;
  font-size: 0.82rem;
  line-height: 1.4;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}
#l14-book .step-card.is-lit {
  border-color: #0d9488;
  background: #ccfbf1;
  transform: scale(1.02);
}
#l14-book .step-card .step-num {
  display: inline-block;
  width: 1.4rem;
  height: 1.4rem;
  line-height: 1.4rem;
  text-align: center;
  border-radius: 50%;
  background: #0d9488;
  color: #fff;
  font-size: 0.72rem;
  margin-right: 0.35rem;
}

#l14-book .socratic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
}
@media (min-width: 640px) {
  #l14-book .socratic-grid { grid-template-columns: 1fr 1fr 1fr; }
}
#l14-book .soc-card {
  padding: 0.55rem;
  border-radius: 14px;
  border: 2px solid #fde68a;
  background: #fffbeb;
}
#l14-book .soc-card .soc-q {
  font-weight: 900;
  font-size: 0.88rem;
  margin: 0 0 0.4rem;
}
#l14-book .soc-card .soc-opts {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
#l14-book .soc-card .soc-opts button {
  padding: 0.35rem 0.5rem;
  border-radius: 10px;
  border: 2px solid #e2e8f0;
  background: #fff;
  font-weight: 800;
  font-size: 0.78rem;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}
#l14-book .soc-card .soc-opts button.ok {
  border-color: #0d9488;
  background: #ccfbf1;
}
#l14-book .soc-card .soc-opts button.bad {
  border-color: #dc2626;
  background: #fee2e2;
}
#l14-book .soc-card .soc-fb {
  margin-top: 0.35rem;
  font-weight: 800;
  font-size: 0.78rem;
  color: #0f766e;
  min-height: 1.2em;
}

#l14-book .transform-demo {
  padding: 0.55rem;
  border-radius: 14px;
  border: 3px dashed #fcd34d;
  background: #fffbeb;
  margin: 0.35rem 0;
}
#l14-book .transform-demo .line-active {
  padding: 0.45rem;
  border-radius: 10px;
  border-left: 4px solid #d97706;
  background: #fff;
  margin-bottom: 0.4rem;
}
#l14-book .transform-demo .line-passive {
  padding: 0.45rem;
  border-radius: 10px;
  border-left: 4px solid #0d9488;
  background: #f0fdfa;
}
#l14-book .transform-demo .hl-obj { background: #fef08a; padding: 0 0.12rem; border-radius: 4px; }
#l14-book .transform-demo .hl-subj { background: #99f6e4; padding: 0 0.12rem; border-radius: 4px; }
#l14-book .transform-demo .hl-verb { background: #fecaca; padding: 0 0.12rem; border-radius: 4px; }
#l14-book .transform-demo .hl-vp { background: #ddd6fe; padding: 0 0.12rem; border-radius: 4px; }

#l14-book .transform-build {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.55rem;
  border-radius: 14px;
  border: 3px dashed #5eead4;
  background: #f0fdfa;
  font-weight: 900;
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
}
#l14-book .tb-slot {
  min-width: 3.8rem;
  min-height: 2.2rem;
  padding: 0.2rem 0.45rem;
  border-radius: 10px;
  border: 2px solid #94a3b8;
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  font-weight: 900;
}
#l14-book .tb-slot.filled-subj { background: #ccfbf1; border-color: #0d9488; color: #0f766e; }
#l14-book .tb-slot.filled-be { background: #dbeafe; border-color: #2563eb; color: #1e40af; }
#l14-book .tb-slot.filled-pp { background: #ede9fe; border-color: #7c3aed; color: #5b21b6; }

#l14-book .transform-carousel-card {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}
#l14-book .xf-card {
  flex: 1 1 auto;
  padding: 0.55rem;
  border-radius: 14px;
  border: 2px solid #99f6e4;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 0;
  overflow: auto;
}
#l14-book .xf-tag {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: #0d9488;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 900;
  align-self: flex-start;
}
#l14-book .xf-active {
  padding: 0.45rem;
  border-radius: 10px;
  background: #fffbeb;
  border-left: 4px solid #d97706;
}
#l14-book .xf-passive {
  padding: 0.45rem;
  border-radius: 10px;
  background: #f0fdfa;
  border-left: 4px solid #0d9488;
  filter: blur(5px);
  opacity: 0.4;
  transition: filter 0.35s, opacity 0.35s;
}
#l14-book .xf-passive.is-shown {
  filter: none;
  opacity: 1;
}
#l14-book .xf-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  font-size: 0.72rem;
  font-weight: 800;
  color: #475569;
}
#l14-book .xf-steps span {
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  background: #f1f5f9;
}

#l14-book .reverse-card {
  padding: 0.55rem;
  border-radius: 14px;
  border: 2px solid #c4b5fd;
  background: #faf5ff;
}
#l14-book .reverse-card .pass-first {
  border-left: 4px solid #0d9488;
  padding: 0.4rem;
  background: #f0fdfa;
  border-radius: 8px;
  margin-bottom: 0.35rem;
}
#l14-book .reverse-card .act-second {
  border-left: 4px solid #d97706;
  padding: 0.4rem;
  background: #fffbeb;
  border-radius: 8px;
  display: none;
}
#l14-book .reverse-card.revealed .act-second { display: block; }

#l14-book .panel-quiz-screen {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#l14-book .en-blur {
  filter: blur(6px);
  opacity: 0.35;
  transition: filter 0.35s ease, opacity 0.35s ease;
}
#l14-book .en-blur.is-shown {
  filter: none;
  opacity: 1;
}

#l14-book .trap-card .right-line {
  display: none;
}
#l14-book .trap-card.revealed .right-line {
  display: block;
}
#l14-book .trap-card .wrong-line {
  color: #b91c1c;
  font-weight: 900;
}
#l14-book .trap-card .right-line {
  color: #0f766e;
  font-weight: 900;
}

#l14-book .checklist {
  margin: 0.45rem 0;
  padding-left: 1.1rem;
  font-weight: 700;
  font-size: 0.82rem;
  line-height: 1.5;
}
#l14-book .summary-pick label {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.32rem 0.5rem;
  margin: 0.15rem;
  border-radius: 999px;
  border: 2px solid #cbd5e1;
  font-weight: 800;
  font-size: 0.8rem;
  cursor: pointer;
}
#l14-book .summary-pick label:has(input:checked) {
  border-color: #0d9488;
  background: #ccfbf1;
}

#l14-book .mark-passive {
  color: #0f766e;
  font-weight: 900;
  text-decoration: underline wavy #5eead4;
}
#l14-book .mark-active {
  color: #b45309;
  font-weight: 900;
}

#l14-book .step-list {
  margin: 0.35rem 0;
  padding-left: 1.2rem;
  font-weight: 700;
  line-height: 1.55;
  font-size: 0.88rem;
}
#l14-book .chip-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  justify-content: center;
  margin: 0.35rem 0;
}
#l14-book .chip-bank button {
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  border: 2px solid #cbd5e1;
  background: #fff;
  font-weight: 800;
  font-size: 0.78rem;
  cursor: pointer;
  font-family: inherit;
}