/**
 * L14 Page 02 · 构成精讲 · be + done
 */
#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;
}

/* 配图 4:3 见 l14-scene-images.css */
#l14-book .scene-frame--formula:not(:has(img)) {
  background: linear-gradient(145deg, #f0fdfa, #ccfbf1);
}

#l14-book .formula-build {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem;
  border-radius: 14px;
  border: 3px dashed #5eead4;
  background: #f0fdfa;
  margin: 0.45rem 0;
  font-weight: 900;
  font-size: clamp(1rem, 2vw, 1.2rem);
}
#l14-book .formula-slot {
  min-width: 4.5rem;
  min-height: 2.4rem;
  padding: 0.25rem 0.5rem;
  border-radius: 10px;
  border: 2px solid #94a3b8;
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  font-weight: 900;
}
#l14-book .formula-slot.filled-be {
  background: #ccfbf1;
  border-color: #0d9488;
  color: #0f766e;
}
#l14-book .formula-slot.filled-pp {
  background: #ede9fe;
  border-color: #7c3aed;
  color: #5b21b6;
}
#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;
}

#l14-book .be-table-interactive {
  width: 100%;
  border-collapse: collapse;
  font-weight: 700;
}
#l14-book .be-table-interactive th,
#l14-book .be-table-interactive td {
  border: 2px solid #e2e8f0;
  padding: 0.45rem 0.5rem;
  text-align: center;
  font-size: 0.82rem;
}
#l14-book .be-table-interactive th {
  background: #0d9488;
  color: #fff;
}
#l14-book .be-table-interactive tr.is-target {
  background: #ccfbf1;
  outline: 3px solid #0d9488;
}
#l14-book .be-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
  margin: 0.45rem 0;
}

#l14-book .negq-carousel-card {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
}
#l14-book .negq-card {
  padding: 0.65rem 0.75rem;
  border-radius: 14px;
  border: 2px solid #c4b5fd;
  background: #faf5ff;
}
#l14-book .negq-card .en-blur {
  filter: blur(5px);
  opacity: 0.4;
  transition: filter 0.3s, opacity 0.3s;
}
#l14-book .negq-card .en-blur.is-shown {
  filter: none;
  opacity: 1;
}

#l14-book .pp-flash-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.35rem;
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
}
@media (min-width: 720px) {
  #l14-book .pp-flash-grid { grid-template-columns: repeat(3, 1fr); }
}
#l14-book .pp-card {
  padding: 0.45rem 0.55rem;
  border-radius: 12px;
  border: 2px solid #e2e8f0;
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  text-align: center;
  touch-action: manipulation;
}
#l14-book .pp-card.revealed {
  border-color: #7c3aed;
  background: #f5f3ff;
}
#l14-book .pp-card .base {
  font-weight: 900;
  color: #334155;
  font-size: 0.88rem;
}
#l14-book .pp-card .pp {
  display: none;
  font-weight: 900;
  color: #6d28d9;
  margin-top: 0.2rem;
}
#l14-book .pp-card.revealed .pp {
  display: block;
}

#l14-book .read-carousel {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
#l14-book .read-card {
  flex: 1 1 auto;
  padding: 0.65rem 0.75rem;
  border-radius: 14px;
  border: 2px solid #99f6e4;
  background: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
#l14-book .read-card .read-tag {
  font-size: 0.72rem;
  font-weight: 900;
  color: #64748b;
}

#l14-book .quick-quiz-stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
#l14-book .quiz-timer-bar {
  position: relative;
  height: clamp(28px, 4vh, 36px);
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
  flex-shrink: 0;
  margin-bottom: 0.35rem;
}
#l14-book .quiz-timer-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 100%;
  transform: scaleX(1);
  transform-origin: left center;
  background: linear-gradient(90deg, #0d9488, #2dd4bf);
}
#l14-book .quiz-timer-bar.is-urgent .quiz-timer-fill {
  background: linear-gradient(90deg, #d97706, #fbbf24);
}
#l14-book .quiz-timer-bar.is-timeout .quiz-timer-fill {
  background: linear-gradient(90deg, #b91c1c, #ef4444);
}
#l14-book .quiz-timer-text {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-weight: 900;
}

#l14-book .quiz-fx {
  position: absolute;
  inset: 0;
  z-index: 12;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
}
#l14-book .quiz-fx:not([hidden]) { display: flex; }
#l14-book .quiz-fx.is-playing {
  animation: l14P02Fx 0.75s ease forwards;
}
@keyframes l14P02Fx {
  0% { opacity: 0; transform: scale(0.6); }
  35% { opacity: 1; transform: scale(1.05); }
  100% { opacity: 0; transform: scale(1.12); }
}
#l14-book .quiz-fx-icon {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
}
#l14-book .quiz-fx--success .quiz-fx-icon { color: #047857; }
#l14-book .quiz-fx--fail .quiz-fx-icon,
#l14-book .quiz-fx--timeout .quiz-fx-icon { color: #b91c1c; }

#l14-book .lesson-page[data-page="8"] .opt-row,
#l14-book .lesson-page[data-page="9"] .opt-row,
#l14-book .lesson-page[data-page="10"] .opt-row,
#l14-book .lesson-page[data-page="11"] .opt-row {
  flex-direction: column;
  max-width: 36rem;
  margin: 0 auto;
  width: 100%;
}
#l14-book .lesson-page[data-page="8"] .opt-row button,
#l14-book .lesson-page[data-page="9"] .opt-row button,
#l14-book .lesson-page[data-page="10"] .opt-row button,
#l14-book .lesson-page[data-page="11"] .opt-row button {
  width: 100%;
  min-height: clamp(42px, 6vh, 52px);
  border-radius: 999px;
  text-align: center;
}

#l14-book .trap-card {
  padding: 0.65rem 0.75rem;
  border-radius: 14px;
  border: 2px solid #fca5a5;
  background: #fef2f2;
}
#l14-book .trap-card .wrong-line {
  color: #b91c1c;
  font-weight: 800;
  text-decoration: line-through;
}
#l14-book .trap-card .right-line {
  display: none;
  color: #047857;
  font-weight: 900;
}
#l14-book .trap-card.revealed .right-line {
  display: block;
  margin-top: 0.35rem;
}

#l14-book .timeline-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  padding: 0.55rem;
  border-radius: 12px;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  font-weight: 800;
  font-size: 0.82rem;
}
#l14-book .timeline-preview .node {
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  background: #fff;
  border: 2px solid #cbd5e1;
}
#l14-book .timeline-preview .node.past {
  border-color: #7c3aed;
  background: #ede9fe;
}

#l14-book .summary-write {
  width: 100%;
  min-height: 3.2rem;
  padding: 0.45rem;
  border-radius: 12px;
  border: 2px solid #99f6e4;
  font-family: inherit;
  font-weight: 700;
}

#l14-book table.corpus-mini {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.72rem;
}
#l14-book table.corpus-mini th,
#l14-book table.corpus-mini td {
  border: 1px solid #e2e8f0;
  padding: 0.35rem;
  vertical-align: top;
}
#l14-book table.corpus-mini th {
  background: #0d9488;
  color: #fff;
}

#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 .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;
}