:root {
  --navy: #243447;
  --navy-2: #31475e;
  --cream: #f7f3ea;
  --paper: #fffdf8;
  --ink: #25303b;
  --muted: #66717c;
  --yellow: #e9b949;
  --yellow-soft: #f7e8b8;
  --blue: #8fb8c8;
  --blue-soft: #dcebf0;
  --green: #7f9f8d;
  --green-soft: #e3eee8;
  --coral: #d9836f;
  --coral-soft: #f4dfd9;
  --line: #d8d2c6;
  --white-line: rgba(255, 255, 255, 0.14);
  --shadow: 0 18px 48px rgba(36, 52, 71, 0.12);
  --footer-h: clamp(62px, 8.3svh, 72px);
  --radius: 18px;
  --projection-body-min: 24px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: clamp(17px, 1.08vw, 21px);
  line-height: 1.48;
}

body {
  text-rendering: optimizeLegibility;
}

button,
a {
  font: inherit;
}

a {
  color: var(--navy-2);
  text-decoration-color: var(--blue);
  text-underline-offset: 0.18em;
}

button {
  border: 0;
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

h1,
h2,
h3,
p,
figure,
ul,
ol {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.14;
}

h1 {
  margin-bottom: 0.35em;
  font-size: clamp(3.1rem, 6vw, 6.6rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.75rem, 2.7vw, 2.7rem);
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 0.3rem;
  font-size: clamp(1rem, 1.25vw, 1.28rem);
}

.deck-shell {
  width: 100vw;
  height: 100svh;
  display: grid;
  grid-template-columns: clamp(190px, 18vw, 232px) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) var(--footer-h);
  background:
    radial-gradient(circle at 82% 12%, rgba(143, 184, 200, 0.15), transparent 24%),
    var(--cream);
  transition: grid-template-columns 220ms ease;
}

.deck-shell.toc-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.toc {
  min-height: 0;
  padding: clamp(1rem, 1.8vw, 1.6rem) clamp(0.75rem, 1.25vw, 1.15rem) 1rem;
  overflow: auto;
  color: #f8f3e8;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 23%),
    var(--navy);
  scrollbar-color: rgba(255, 255, 255, 0.28) transparent;
  scrollbar-width: thin;
  opacity: 1;
  visibility: visible;
  transition: opacity 150ms ease, visibility 150ms ease, padding 220ms ease;
}

.deck-shell.toc-collapsed .toc {
  padding-right: 0;
  padding-left: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.brand {
  margin-bottom: 1.1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--white-line);
}

.brand span,
.brand strong {
  display: block;
}

.brand span {
  margin-bottom: 0.35rem;
  color: var(--yellow);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.brand strong {
  color: #fffdf8;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.toc nav {
  display: grid;
  gap: 0.12rem;
}

.toc nav button {
  width: 100%;
  padding: 0.42rem 0.55rem;
  overflow: hidden;
  border-left: 3px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.64rem;
  line-height: 1.25;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toc nav button:hover {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
}

.toc nav button.active {
  border-left-color: var(--yellow);
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  font-weight: 800;
}

.sync-state {
  margin-top: 1.15rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--white-line);
  color: rgba(255, 255, 255, 0.46);
  font-size: 0.58rem;
}

.stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  container-type: size;
}

.slide {
  display: none;
  width: 100%;
  height: calc(100svh - var(--footer-h));
  min-width: 0;
  min-height: 0;
  padding: clamp(1rem, 2vw, 1.9rem) clamp(1.1rem, 2.4vw, 2.35rem);
  overflow: hidden;
  gap: clamp(0.55rem, 1.15vw, 1rem);
  font-size: clamp(21px, calc(1.15cqw + 1.55cqh), 31px);
}

.slide.active {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.slide > header {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(300px, 0.8fr);
  align-items: end;
  gap: clamp(1rem, 2.3vw, 2.2rem);
  padding-bottom: clamp(0.55rem, 0.9vw, 0.85rem);
  border-bottom: 1px solid var(--line);
}

.heading {
  min-width: 0;
}

.eyebrow {
  margin-bottom: 0.22rem;
  color: #a06c05;
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.subtitle {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.6rem);
  line-height: 1.48;
}

.soil-frame {
  position: relative;
  padding: 0.62rem 0.75rem 0.62rem 0.9rem;
  border: 1px solid rgba(143, 184, 200, 0.65);
  border-radius: 10px;
  background: rgba(220, 235, 240, 0.58);
}

.soil-frame::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  border-radius: 10px 0 0 10px;
  background: var(--blue);
  content: "";
}

.soil-frame p {
  margin: 0;
  color: #3d4c58;
  font-size: clamp(0.68rem, 0.82vw, 0.84rem);
  line-height: 1.42;
}

.soil-frame p + p {
  margin-top: 0.22rem;
}

.soil-frame b {
  color: var(--navy);
}

.slide-body {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.slide-footer {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  padding-top: 0.48rem;
  border-top: 1px solid var(--line);
}

.slide-footer p {
  margin: 0;
}

.takeaway {
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
}

.source-note {
  max-width: 28rem;
  color: var(--muted);
  font-size: 0.58rem;
  text-align: right;
}

.source-note a {
  color: inherit;
}

/* 封面與收束頁 */
.slide.active.hero-slide {
  position: relative;
  display: block;
  padding: 0;
  overflow: clip;
  isolation: isolate;
}

.hero-media,
.hero-copy {
  position: absolute;
  inset: 0;
}

.hero-media {
  min-width: 0;
  min-height: 0;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(25, 39, 54, 0.94) 0%, rgba(25, 39, 54, 0.82) 37%, rgba(25, 39, 54, 0.18) 72%, rgba(25, 39, 54, 0.05) 100%),
    linear-gradient(180deg, transparent 60%, rgba(25, 39, 54, 0.28));
  content: "";
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-copy {
  z-index: 2;
  width: min(59%, 760px);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 5vw, 5.2rem);
  color: #fff;
}

.hero-copy h1,
.hero-copy h2 {
  color: #fffdf8;
}

.hero-copy h2 {
  max-width: 12ch;
  margin-bottom: 0.7rem;
  font-size: clamp(2.7rem, 5vw, 5.3rem);
}

.hero-copy .eyebrow {
  color: var(--yellow);
}

.hero-copy .subtitle {
  color: rgba(255, 255, 255, 0.84);
}

.hero-copy .soil-frame {
  width: min(100%, 640px);
  margin-top: clamp(1.2rem, 2.8vw, 2.7rem);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.hero-copy .soil-frame::before {
  background: var(--yellow);
}

.hero-copy .soil-frame p,
.hero-copy .soil-frame b {
  color: rgba(255, 255, 255, 0.92);
}

.closing-slide .hero-media::after {
  background: linear-gradient(90deg, rgba(25, 39, 54, 0.94), rgba(25, 39, 54, 0.76) 48%, rgba(25, 39, 54, 0.18));
}

.closing-copy {
  width: min(70%, 900px);
}

.closing-copy h2 {
  max-width: none;
  font-size: clamp(2.55rem, 4.4vw, 4.7rem);
}

.closing-points {
  display: grid;
  gap: 0.42rem;
  margin: 0.9rem 0 0;
  padding-left: 1.35rem;
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(0.9rem, 1.3vw, 1.18rem);
}

/* 通用卡片與版面 */
.journey-grid,
.card-grid,
.question-grid,
.triple-grid,
.quad-grid,
.layer-grid,
.tool-grid,
.compare-grid,
.role-grid,
.evidence-grid,
.route-grid,
.reference-grid {
  display: grid;
  align-items: stretch;
  gap: clamp(0.55rem, 1.1vw, 1rem);
}

.journey-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-content: center;
}

.journey-grid article,
.card-grid article,
.question-grid article,
.triple-grid article,
.quad-grid article,
.layer-grid article,
.tool-grid article,
.role-grid article,
.evidence-grid article,
.route-grid article,
.reference-grid article {
  min-width: 0;
  padding: clamp(0.75rem, 1.25vw, 1.15rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.86);
  box-shadow: 0 7px 22px rgba(36, 52, 71, 0.055);
}

.journey-grid article {
  position: relative;
  min-height: 10.2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.journey-grid article::after {
  position: absolute;
  top: 2rem;
  right: -1rem;
  width: 2rem;
  height: 2px;
  background: var(--yellow);
  content: "";
}

.journey-grid article:last-child::after {
  display: none;
}

.journey-grid span,
.number-card > span,
.question-grid article > span,
.action-questions span {
  color: #a06c05;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.journey-grid b {
  color: var(--navy);
  font-size: 1.35rem;
}

.journey-grid p,
.card-grid p,
.question-grid p,
.triple-grid p,
.quad-grid p,
.layer-grid p,
.tool-grid p,
.role-grid p,
.evidence-grid p,
.route-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.card-grid.four,
.question-grid.four,
.quad-grid,
.role-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-grid.three,
.question-grid.three,
.triple-grid,
.route-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid,
.question-grid,
.triple-grid,
.quad-grid,
.layer-grid,
.tool-grid,
.role-grid,
.evidence-grid,
.route-grid {
  align-content: center;
}

.number-card {
  position: relative;
  min-height: 11rem;
}

.number-card::after {
  position: absolute;
  right: 0.9rem;
  bottom: 0.55rem;
  width: 2.4rem;
  height: 0.35rem;
  border-radius: 999px;
  background: var(--yellow);
  content: "";
}

.number-card h3,
.question-grid h3 {
  margin-top: 1.6rem;
  font-size: 1.28rem;
}

.question-grid.large article {
  min-height: 11rem;
}

.question-grid article:nth-child(2n),
.card-grid article:nth-child(2n) {
  background: rgba(220, 235, 240, 0.6);
}

.split-layout {
  height: 100%;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(250px, 0.76fr) minmax(0, 1.24fr);
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.5rem);
}

.split-layout.reverse {
  grid-template-columns: minmax(0, 1.24fr) minmax(250px, 0.76fr);
}

.split-layout figure {
  width: 100%;
  height: auto;
  max-height: 100%;
  aspect-ratio: 16 / 9;
  align-self: center;
  min-width: 0;
  min-height: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--blue-soft);
  box-shadow: var(--shadow);
}

.split-layout figure img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: center;
}

#slide-reading-support .reading-stages {
  grid-template-columns: 1fr;
}

.case-list,
.participation-list,
.dialogue-flow {
  min-width: 0;
  align-self: center;
}

.case-label,
.not-only {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.35rem 0.62rem;
  border-radius: 999px;
  background: var(--yellow-soft);
  color: #72500b;
  font-size: 0.72rem;
  font-weight: 800;
}

.check-list {
  display: grid;
  gap: 0.52rem;
  margin-bottom: 0.8rem;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.45rem;
  font-size: 0.88rem;
}

.check-list li::before {
  position: absolute;
  top: 0.17em;
  left: 0;
  width: 0.82rem;
  height: 0.82rem;
  border: 3px solid var(--blue);
  border-radius: 50%;
  content: "";
}

.callout,
.activity-output,
.version-note,
.commitment-card,
.quote-compare {
  padding: 0.72rem 0.85rem;
  border-radius: 12px;
  background: var(--yellow-soft);
  color: #65470c;
  font-size: 0.76rem;
  font-weight: 750;
}

.evidence-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.evidence-grid article {
  padding: 0.66rem 0.75rem;
  border-radius: 12px;
}

.evidence-grid h3 {
  font-size: 0.9rem;
}

.evidence-grid .strength {
  border-color: rgba(127, 159, 141, 0.55);
  background: var(--green-soft);
}

/* 活動與倒數計時 */
.activity-layout {
  height: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 0.34fr);
  gap: clamp(0.8rem, 1.7vw, 1.55rem);
}

.activity-main,
.assessment-canvas {
  min-height: 0;
  display: grid;
  align-content: center;
  gap: 0.72rem;
}

.task-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: activity;
}

.task-list li {
  position: relative;
  min-height: 6.2rem;
  padding: 0.85rem 0.85rem 0.85rem 2.75rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  counter-increment: activity;
}

.task-list li::before {
  position: absolute;
  top: 0.85rem;
  left: 0.82rem;
  color: #a06c05;
  font-size: 0.68rem;
  font-weight: 900;
  content: "0" counter(activity);
}

.task-list b,
.task-list span {
  display: block;
}

.task-list span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.timer-panel {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
  box-shadow: var(--shadow);
  text-align: center;
}

.timer-label {
  margin-bottom: 0.1rem;
  color: var(--yellow);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.timer-display {
  display: block;
  margin: 0.1rem 0 0.75rem;
  color: #fffdf8;
  font: 800 clamp(2.6rem, 5vw, 5rem) / 1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: -0.06em;
}

.timer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.42rem;
}

.timer-actions button {
  min-height: 40px;
  padding: 0.48rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.11);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 750;
}

.timer-actions button:first-child {
  background: var(--yellow);
  color: var(--navy);
}

.timer-panel small {
  margin-top: 0.72rem;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.55rem;
}

.timer-panel.is-finished .timer-display {
  color: var(--yellow);
}

.assessment-canvas {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.assessment-canvas article {
  min-height: 5.25rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--paper);
}

.assessment-canvas article span,
.route-grid article > span,
.target-core > span {
  color: #a06c05;
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.assessment-canvas article p {
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
}

.assessment-canvas .activity-output {
  grid-column: 1 / -1;
}

/* 表格 */
.table-wrap {
  display: grid;
  align-items: center;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 9px 25px rgba(36, 52, 71, 0.06);
  font-size: 0.75rem;
}

th,
td {
  padding: clamp(0.55rem, 1vw, 0.85rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

th:last-child,
td:last-child {
  border-right: 0;
}

tbody tr:last-child td {
  border-bottom: 0;
}

th {
  background: var(--navy);
  color: #fff;
  font-weight: 800;
}

tbody tr:nth-child(even) td {
  background: rgba(220, 235, 240, 0.44);
}

.dense-table table {
  font-size: 0.72rem;
}

.compare-table td:first-child {
  color: #874b3f;
  font-weight: 700;
}

.compare-table td:last-child {
  color: #3f6950;
  font-weight: 700;
}

/* 概念、法規與模型 */
.triple-grid article,
.myth-card {
  min-height: 10rem;
}

.triple-grid article > span,
.myth-card > span {
  display: inline-block;
  margin-bottom: 1rem;
  color: #a06c05;
  font-size: 0.58rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.triple-grid small {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.66rem;
}

.triple-grid .fact {
  border-top: 6px solid var(--blue);
}

.triple-grid .hypothesis {
  border-top: 6px solid var(--yellow);
}

.triple-grid .action {
  border-top: 6px solid var(--green);
}

.law-layout {
  height: 100%;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  align-items: center;
  gap: 1rem;
}

.law-core {
  min-height: 16rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(0.9rem, 1.5vw, 1.4rem);
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
}

.law-core h3 {
  color: #fff;
}

.law-core > p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.78rem;
}

.law-number {
  margin-bottom: 0.7rem;
  color: var(--yellow);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.tag-cloud,
.tool-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-cloud {
  margin: 0.45rem 0 0.85rem;
}

.tag-cloud span {
  padding: 0.34rem 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  font-size: 0.68rem;
  font-weight: 800;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.boundary-grid article {
  min-height: 16rem;
  padding: 1rem;
  border: 1px solid rgba(127, 159, 141, 0.55);
  border-radius: var(--radius);
  background: var(--green-soft);
}

.boundary-grid article.warning {
  border-color: rgba(217, 131, 111, 0.55);
  background: var(--coral-soft);
}

.boundary-grid ul {
  display: grid;
  gap: 0.45rem;
  margin: 0.7rem 0 0;
  padding-left: 1.15rem;
  font-size: 0.76rem;
}

.layer-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.layer-grid article {
  position: relative;
  min-height: 10.4rem;
  overflow: hidden;
}

.layer-grid article::after {
  position: absolute;
  right: -1rem;
  bottom: -1rem;
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  background: rgba(143, 184, 200, 0.24);
  content: "";
}

.quad-grid article {
  min-height: 10.5rem;
  border-top: 6px solid var(--blue);
}

.quad-grid article:nth-child(2) {
  border-top-color: var(--yellow);
}

.quad-grid article:nth-child(3) {
  border-top-color: var(--green);
}

.quad-grid article:nth-child(4) {
  border-top-color: var(--coral);
}

.compare-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: center;
}

.compare-grid article {
  min-height: 13rem;
  padding: 1.2rem;
  border-radius: var(--radius);
}

.compare-grid ul {
  display: grid;
  gap: 0.48rem;
  margin-bottom: 0;
  padding-left: 1.15rem;
  font-size: 0.79rem;
}

.compare-grid .negative {
  border: 1px solid rgba(217, 131, 111, 0.55);
  background: var(--coral-soft);
}

.compare-grid .positive {
  border: 1px solid rgba(127, 159, 141, 0.55);
  background: var(--green-soft);
}

/* 步驟、策略與讀寫支持 */
.step-flow {
  display: grid;
  align-items: stretch;
  gap: 0.65rem;
}

.step-flow.five {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.step-flow.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-flow article {
  position: relative;
  min-width: 0;
  min-height: 9rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
}

.step-flow article:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -0.56rem;
  z-index: 2;
  color: #9f8f76;
  font-size: 1rem;
  font-weight: 900;
  content: "›";
  transform: translateY(-50%);
}

.step-flow article > span {
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 900;
}

.step-flow p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.tool-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-grid article {
  min-height: 8rem;
}

.reading-stages {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  align-self: center;
}

.reading-stages article {
  min-height: 6.4rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--paper);
}

.reading-stages span {
  color: #a06c05;
  font-size: 0.65rem;
  font-weight: 900;
}

.reading-stages h3 {
  margin-top: 0.42rem;
  font-size: 0.95rem;
}

.reading-stages p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.68rem;
}

.writing-flow {
  margin-top: 1rem;
}

.tool-chips {
  justify-content: center;
  margin-top: 1rem;
}

.tool-chips span {
  padding: 0.43rem 0.7rem;
  border: 1px solid rgba(143, 184, 200, 0.65);
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 750;
}

.target-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.55fr) minmax(0, 1.45fr);
  align-items: stretch;
  gap: 0.85rem;
}

.target-core {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.2rem;
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
}

.target-core > span {
  color: var(--yellow);
}

.target-core h3 {
  margin-top: 0.9rem;
  color: #fff;
  font-size: 1.45rem;
}

.target-core p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.75rem;
}

.route-grid article {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* 合作、行動與參考資料 */
.role-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.role-grid article {
  padding: 0.72rem;
  border-radius: 12px;
}

.dialogue-flow ol {
  display: grid;
  gap: 0.38rem;
  margin-bottom: 0.7rem;
  padding-left: 1.4rem;
  font-size: 0.8rem;
}

.quote-compare p {
  margin: 0;
}

.quote-compare p + p {
  margin-top: 0.35rem;
  color: #2f6747;
}

.action-plan {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
  align-items: stretch;
  gap: 0.85rem;
}

.action-questions {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.55rem;
}

.action-questions article {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--paper);
}

.action-questions p {
  margin: 1rem 0 0;
  font-size: 0.76rem;
}

.commitment-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.1rem;
  background: var(--navy);
  color: #fff;
}

.commitment-card > span {
  color: var(--yellow);
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.commitment-card p {
  margin: 1rem 0 0;
  font-size: 0.9rem;
}

.commitment-card i {
  color: var(--yellow);
  font-style: normal;
}

.reference-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: stretch;
}

.reference-grid article {
  overflow: hidden;
}

.reference-grid ul {
  display: grid;
  gap: 0.35rem;
  margin: 0.6rem 0 0;
  padding-left: 1.05rem;
  font-size: 0.68rem;
}

.reference-grid .version-note {
  margin-top: 0.75rem;
}

.version-note p {
  margin: 0.2rem 0 0;
  font-weight: 500;
}

/* 固定導覽列 */
.controls {
  grid-column: 1 / -1;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(0.5rem, 2vw, 2rem);
  padding: 0.48rem clamp(0.65rem, 1.6vw, 1.5rem);
  border-top: 1px solid var(--white-line);
  background: #182534;
  color: #fff;
}

.deck-identity {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.deck-identity-mark {
  width: 4px;
  min-height: 38px;
  align-self: stretch;
  border-radius: 999px;
  background: var(--yellow);
}

.deck-identity-copy {
  min-width: 0;
  display: grid;
  gap: 0.05rem;
}

.deck-identity-copy strong,
.deck-identity-copy span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deck-identity-copy strong {
  font-size: 0.8rem;
}

.deck-identity-copy span {
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.58rem;
}

.page-controls {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.page-controls #pageInfo {
  min-width: 4.4rem;
  color: rgba(255, 255, 255, 0.62);
  font: 700 0.65rem / 1 ui-monospace, SFMono-Regular, Menlo, monospace;
  text-align: center;
}

.controls button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.4rem 0.68rem;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.66rem;
  font-weight: 750;
}

.controls button:hover,
.timer-actions button:hover {
  filter: brightness(1.09);
}

.toc-toggle {
  min-width: 7.2rem;
}

.toc-toggle > span:first-child {
  font-size: 1.15em;
  line-height: 1;
}

/* 投影優先字級：以實際舞台寬高縮放，目錄收合後自動放大。 */
@media (min-width: 641px) {
  .slide h1 {
    font-size: clamp(3.1em, 7cqw, 5.4em);
  }

  .slide h2 {
    font-size: clamp(2.15em, 4.25cqw, 3.1em);
  }

  .slide .eyebrow {
    font-size: 0.72em;
  }

  .slide .soil-frame p {
    font-size: 0.72em;
  }

  .slide-body h3 {
    font-size: 1.06em;
  }

  .slide-body p,
  .slide-body li {
    font-size: 0.82em;
    line-height: 1.44;
  }

  .slide-body small {
    font-size: 0.66em;
  }

  .boundary-grid ul,
  .compare-grid ul,
  .dialogue-flow ol,
  .reference-grid ul {
    font-size: 1em;
  }

  .law-core > p:last-child {
    font-size: 0.76em;
  }

  .slide-footer .takeaway {
    font-size: 0.76em;
  }

  .slide-footer .source-note {
    font-size: 0.5em;
  }

  .journey-grid span,
  .number-card > span,
  .question-grid article > span,
  .action-questions span,
  .triple-grid article > span,
  .myth-card > span,
  .assessment-canvas article span,
  .route-grid article > span,
  .target-core > span {
    font-size: 0.62em;
  }

  .journey-grid b {
    font-size: 1.2em;
  }

  .case-label,
  .not-only,
  .callout,
  .activity-output,
  .version-note,
  .quote-compare {
    font-size: 0.7em;
  }

  .task-list b {
    font-size: 0.88em;
  }

  .task-list span {
    font-size: 0.72em;
  }

  .timer-label {
    font-size: 0.66em;
  }

  .timer-display {
    font-size: clamp(3em, 6.2cqw, 5em);
  }

  .timer-actions button {
    font-size: 0.66em;
  }

  .timer-panel small {
    font-size: 0.5em;
  }

  .tag-cloud span,
  .tool-chips span {
    font-size: 0.62em;
  }

  table {
    font-size: 1em;
  }

  th,
  td {
    font-size: 0.74em;
    line-height: 1.38;
  }

  .reference-grid li {
    font-size: 0.68em;
  }

  .hero-copy .subtitle {
    font-size: 1.12em;
  }

  .hero-copy .soil-frame p {
    font-size: 0.7em;
  }

  .hero-copy h2 {
    font-size: clamp(2.6em, 6cqw, 4.4em);
  }

  .closing-copy h2 {
    font-size: clamp(2.5em, 5cqw, 3.8em);
  }

  .closing-points {
    font-size: 0.9em;
  }
}

/* 平板與手機 */
@media (max-width: 900px) {
  .deck-shell,
  .deck-shell.toc-collapsed {
    grid-template-columns: 1fr;
  }

  .toc {
    display: none;
  }

  .controls .toc-toggle {
    display: none;
  }

  .slide > header {
    grid-template-columns: minmax(0, 1fr) minmax(255px, 0.82fr);
  }
}

@media screen and (min-width: 641px) {
  /* 教學內容的硬底線：任何既有元件規則都不能把正文縮回 24px 以下。 */
  .slide .slide-body p,
  .slide .slide-body li,
  .slide .slide-body th,
  .slide .slide-body td {
    font-size: max(1em, var(--projection-body-min)) !important;
    line-height: 1.32;
  }

  .commitment-card,
  .quote-compare,
  .callout,
  .activity-output,
  .version-note {
    font-size: 1em;
  }

  .split-layout figure img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    object-position: center;
  }

  .question-grid.four article {
    padding: 0.48em 0.62em;
  }

  .question-grid.four article h3,
  .number-card h3,
  .question-grid h3 {
    margin-top: 0.35em;
  }

  #slide-case-data .evidence-grid {
    gap: 0.3em;
  }

  #slide-case-data .evidence-grid article {
    min-height: 0;
    padding: 0.34em 0.5em;
  }

  #slide-case-data .evidence-grid h3 {
    margin-bottom: 0.12em;
  }

  .table-wrap th,
  .table-wrap td {
    padding: 0.28em 0.42em;
    line-height: 1.22;
  }

  #slide-reading-support .reading-stages {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.28em;
  }

  #slide-reading-support .reading-stages article {
    min-height: 0;
    display: grid;
    grid-template-columns: 5.7em minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: center;
    column-gap: 0.55em;
    padding: 0.32em 0.48em;
  }

  #slide-reading-support .reading-stages span {
    grid-column: 1;
    grid-row: 1;
  }

  #slide-reading-support .reading-stages h3 {
    grid-column: 1;
    grid-row: 2;
    margin: 0.05em 0 0;
  }

  #slide-reading-support .reading-stages p {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
  }

  #slide-family-dialogue .dialogue-flow ol {
    gap: 0.16em;
    margin-bottom: 0.32em;
  }

  #slide-family-dialogue .quote-compare {
    padding: 0.38em 0.52em;
  }

  #slide-family-dialogue .quote-compare p + p {
    margin-top: 0.18em;
  }

  #slide-action-plan .action-questions {
    gap: 0.22em;
  }

  #slide-action-plan .action-questions article {
    grid-template-columns: 1.85em minmax(0, 1fr);
    gap: 0.42em;
    padding: 0.14em 0.45em;
  }

  #slide-action-plan .action-questions span {
    width: 1.65em;
    height: 1.65em;
    font-size: 0.62em;
  }

  #slide-action-plan .commitment-card {
    padding: 0.8em;
  }

  #slide-action-plan .commitment-card p {
    margin-top: 0.55em;
    font-size: 1em !important;
    line-height: 1.42;
  }
}

@media print {
  .toc,
  .controls {
    display: none;
  }
}

@media screen {
  .controls .toc-toggle,
  .deck-shell.toc-collapsed .toc-toggle {
    position: static;
    top: auto;
    left: auto;
    z-index: auto;
    width: auto;
    min-width: 7.2rem;
    min-height: 40px;
    display: inline-flex;
    flex-direction: row;
    gap: 0.35rem;
    padding: 0.4rem 0.68rem;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: none;
    transform: none;
  }

  .toc-toggle-icon {
    color: var(--yellow);
    font-size: 1.2em;
    line-height: 1;
  }

  .toc-toggle-label {
    color: #fff;
    font-size: inherit;
    font-weight: 750;
    line-height: inherit;
    writing-mode: horizontal-tb;
  }
}

@media screen {
  .controls .toc-toggle,
  .deck-shell.toc-collapsed .toc-toggle {
    position: static;
    top: auto;
    left: auto;
    z-index: auto;
    width: auto;
    min-width: 7.2rem;
    min-height: 40px;
    display: inline-flex;
    flex-direction: row;
    gap: 0.35rem;
    padding: 0.4rem 0.68rem;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: none;
    transform: none;
  }

  .toc-toggle-icon {
    color: var(--yellow);
    font-size: 1.2em;
    line-height: 1;
  }

  .toc-toggle-label {
    color: #fff;
    font-size: inherit;
    font-weight: 750;
    line-height: inherit;
    writing-mode: horizontal-tb;
  }
}

@media screen {
  .controls .toc-toggle,
  .deck-shell.toc-collapsed .toc-toggle {
    position: static !important;
    top: auto !important;
    left: auto !important;
    z-index: auto !important;
    width: auto !important;
    min-width: 7.2rem !important;
    min-height: 40px !important;
    display: inline-flex !important;
    flex-direction: row !important;
    gap: 0.35rem !important;
    padding: 0.4rem 0.68rem !important;
    border: 1px solid rgba(255, 255, 255, 0.17) !important;
    border-radius: 7px !important;
    background: rgba(255, 255, 255, 0.08) !important;
    box-shadow: none !important;
    transform: none !important;
  }

  .toc-toggle-icon {
    color: var(--yellow) !important;
    font-size: 1.2em !important;
    line-height: 1 !important;
  }

  .toc-toggle-label {
    color: #fff !important;
    font-size: inherit !important;
    font-weight: 750 !important;
    line-height: inherit !important;
    writing-mode: horizontal-tb !important;
  }
}

@media screen and (min-width: 641px) {
  .slide .split-layout figure {
    position: relative !important;
    min-height: 0 !important;
  }

  .slide .split-layout figure img {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
    object-fit: contain !important;
    object-position: center !important;
  }

  #slide-detective .activity-main {
    gap: 0.32em;
  }

  #slide-detective .task-list {
    gap: 0.32em;
  }

  #slide-detective .task-list li {
    min-height: 0;
    padding: 0.38em 0.42em 0.38em 2.1em;
  }

  #slide-detective .task-list li::before {
    top: 0.48em;
    left: 0.55em;
  }

  #slide-detective .activity-output {
    padding: 0.42em 0.58em;
  }

  #slide-workbench th,
  #slide-workbench td {
    padding-top: 0.24em;
    padding-bottom: 0.24em;
  }
}

@media screen and (min-width: 641px) {
  #slide-case-data .evidence-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    grid-template-rows: repeat(2, minmax(0, 1fr)) !important;
    height: 100% !important;
  }

  #slide-case-data .evidence-grid article {
    padding: 0.22em 0.36em !important;
  }

  #slide-case-data .evidence-grid h3 {
    margin: 0 0 0.05em !important;
  }

  #slide-case-data .evidence-grid p {
    line-height: 1.18 !important;
  }

  #slide-family-dialogue .dialogue-flow ol {
    gap: 0 !important;
    margin-bottom: 0.18em !important;
  }

  #slide-family-dialogue .quote-compare {
    padding: 0.25em 0.4em !important;
  }

  #slide-family-dialogue .quote-compare p {
    line-height: 1.2 !important;
  }

  #slide-family-dialogue .quote-compare p + p {
    margin-top: 0.1em !important;
  }

  #slide-environment-adjustment .tool-grid article {
    padding: 0.42em !important;
  }

  #slide-environment-adjustment .tool-grid p {
    line-height: 1.24 !important;
  }
}

@media (max-width: 640px) {
  :root {
    --footer-h: 70px;
    --radius: 13px;
  }

  html,
  body {
    font-size: 14px;
  }

  h2 {
    font-size: clamp(1.48rem, 7.4vw, 2rem);
  }

  .slide {
    padding: 0.7rem 0.7rem 0.62rem;
    gap: 0.45rem;
    font-size: clamp(15px, calc(1.45cqw + 1.3cqh), 18px);
  }

  .slide > header {
    display: block;
    padding-bottom: 0.45rem;
  }

  .slide > header .soil-frame {
    margin-top: 0.43rem;
  }

  .soil-frame {
    padding: 0.42rem 0.52rem 0.42rem 0.68rem;
  }

  .soil-frame p {
    font-size: 0.66rem;
  }

  .slide-footer {
    display: block;
    padding-top: 0.35rem;
  }

  .takeaway {
    font-size: 0.67rem;
  }

  .source-note {
    max-width: none;
    margin-top: 0.12rem !important;
    font-size: 0.5rem;
    text-align: left;
  }

  .journey-grid,
  .card-grid.four,
  .card-grid.three,
  .question-grid.four,
  .question-grid.three,
  .triple-grid,
  .quad-grid,
  .layer-grid,
  .tool-grid,
  .role-grid,
  .route-grid,
  .reference-grid,
  .reading-stages,
  .step-flow.five,
  .step-flow.four,
  .action-questions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .journey-grid,
  .card-grid,
  .question-grid,
  .triple-grid,
  .quad-grid,
  .layer-grid,
  .tool-grid,
  .role-grid,
  .route-grid,
  .reference-grid {
    gap: 0.38rem;
  }

  .journey-grid article,
  .card-grid article,
  .question-grid article,
  .triple-grid article,
  .quad-grid article,
  .layer-grid article,
  .tool-grid article,
  .role-grid article,
  .route-grid article,
  .reference-grid article,
  .number-card,
  .question-grid.large article {
    min-height: 0;
    padding: 0.5rem 0.58rem;
    border-radius: 10px;
  }

  .journey-grid article {
    justify-content: flex-start;
  }

  .journey-grid article::after,
  .step-flow article::after {
    display: none;
  }

  .journey-grid article:last-child {
    grid-column: 1 / -1;
  }

  .journey-grid b,
  .number-card h3,
  .question-grid h3 {
    margin-top: 0.2rem;
    font-size: 0.87rem;
  }

  .journey-grid p,
  .card-grid p,
  .question-grid p,
  .triple-grid p,
  .quad-grid p,
  .layer-grid p,
  .tool-grid p,
  .role-grid p,
  .route-grid p {
    font-size: 0.62rem;
  }

  .triple-grid article > span {
    margin-bottom: 0.15rem;
  }

  .split-layout,
  .split-layout.reverse {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) minmax(140px, 40%);
    gap: 0.45rem;
  }

  .split-layout.reverse {
    grid-template-rows: minmax(140px, 40%) minmax(0, 1fr);
  }

  .split-layout figure {
    width: 100%;
    height: 100%;
    max-height: none;
    aspect-ratio: auto;
    min-height: 0;
  }

  .case-label,
  .not-only {
    margin-bottom: 0.35rem;
    padding: 0.25rem 0.4rem;
    font-size: 0.58rem;
  }

  .check-list {
    gap: 0.25rem;
    margin-bottom: 0.4rem;
  }

  .check-list li {
    padding-left: 0.9rem;
    font-size: 0.62rem;
  }

  .check-list li::before {
    width: 0.52rem;
    height: 0.52rem;
    border-width: 2px;
  }

  .callout,
  .activity-output,
  .version-note,
  .quote-compare {
    padding: 0.4rem 0.48rem;
    font-size: 0.58rem;
  }

  .evidence-grid {
    gap: 0.3rem;
  }

  .evidence-grid article {
    padding: 0.35rem 0.42rem;
  }

  .evidence-grid h3 {
    margin-bottom: 0.1rem;
    font-size: 0.65rem;
  }

  .evidence-grid p {
    font-size: 0.55rem;
  }

  .activity-layout {
    grid-template-columns: minmax(0, 1fr) minmax(112px, 0.38fr);
    gap: 0.42rem;
  }

  .task-list {
    gap: 0.32rem;
  }

  .task-list li {
    min-height: 0;
    padding: 0.42rem 0.4rem 0.42rem 1.6rem;
    border-radius: 9px;
  }

  .task-list li::before {
    top: 0.44rem;
    left: 0.4rem;
    font-size: 0.52rem;
  }

  .task-list b {
    font-size: 0.63rem;
  }

  .task-list span {
    font-size: 0.54rem;
  }

  .timer-panel {
    padding: 0.55rem;
  }

  .timer-display {
    margin-bottom: 0.5rem;
    font-size: 1.7rem;
  }

  .timer-actions {
    display: grid;
    width: 100%;
  }

  .timer-actions button {
    min-height: 34px;
    padding: 0.3rem;
    font-size: 0.55rem;
  }

  .timer-panel small {
    display: none;
  }

  .assessment-canvas {
    gap: 0.3rem;
  }

  .assessment-canvas article {
    min-height: 0;
    padding: 0.38rem;
  }

  .assessment-canvas article p {
    margin-top: 0.1rem;
    font-size: 0.55rem;
  }

  .law-layout {
    grid-template-columns: minmax(118px, 0.72fr) minmax(0, 1.28fr);
    gap: 0.4rem;
  }

  .law-core,
  .boundary-grid article {
    min-height: 0;
    padding: 0.5rem;
    border-radius: 10px;
  }

  .law-core h3,
  .boundary-grid h3 {
    font-size: 0.68rem;
  }

  .law-core > p:last-child,
  .boundary-grid ul {
    font-size: 0.53rem;
  }

  .tag-cloud {
    gap: 0.2rem;
    margin: 0.25rem 0 0.35rem;
  }

  .tag-cloud span {
    padding: 0.2rem 0.3rem;
    font-size: 0.5rem;
  }

  .boundary-grid {
    gap: 0.3rem;
  }

  .boundary-grid ul {
    gap: 0.16rem;
    margin-top: 0.25rem;
    padding-left: 0.8rem;
  }

  .compare-grid {
    gap: 0.35rem;
  }

  .compare-grid article {
    min-height: 0;
    padding: 0.55rem;
  }

  .compare-grid ul {
    gap: 0.2rem;
    font-size: 0.56rem;
  }

  .step-flow {
    gap: 0.32rem;
  }

  .step-flow article {
    min-height: 0;
    padding: 0.45rem;
    border-radius: 9px;
  }

  .step-flow article > span {
    width: 1.2rem;
    height: 1.2rem;
    margin-bottom: 0.3rem;
    font-size: 0.55rem;
  }

  .step-flow h3,
  .reading-stages h3 {
    font-size: 0.68rem;
  }

  .step-flow p,
  .reading-stages p {
    font-size: 0.54rem;
  }

  .reading-stages article {
    min-height: 0;
    padding: 0.38rem;
  }

  .writing-flow,
  .tool-chips {
    margin-top: 0.4rem;
  }

  .tool-chips {
    gap: 0.24rem;
  }

  .tool-chips span {
    padding: 0.24rem 0.38rem;
    font-size: 0.54rem;
  }

  .target-layout {
    grid-template-columns: minmax(106px, 0.55fr) minmax(0, 1.45fr);
    gap: 0.35rem;
  }

  .target-core,
  .route-grid article {
    padding: 0.5rem;
    border-radius: 9px;
  }

  .target-core h3 {
    margin-top: 0.4rem;
    font-size: 0.82rem;
  }

  .target-core p {
    font-size: 0.54rem;
  }

  .route-grid {
    grid-template-columns: 1fr;
  }

  .route-grid h3 {
    font-size: 0.66rem;
  }

  .role-grid article {
    padding: 0.36rem;
  }

  .dialogue-flow ol {
    gap: 0.18rem;
    margin-bottom: 0.35rem;
    padding-left: 1rem;
    font-size: 0.57rem;
  }

  .action-plan {
    grid-template-columns: minmax(0, 1.55fr) minmax(108px, 0.45fr);
    gap: 0.4rem;
  }

  .action-questions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.3rem;
  }

  .action-questions article {
    padding: 0.4rem;
  }

  .action-questions article:last-child {
    grid-column: 1 / -1;
  }

  .action-questions p {
    margin-top: 0.2rem;
    font-size: 0.55rem;
  }

  .commitment-card {
    padding: 0.55rem;
  }

  .commitment-card p {
    margin-top: 0.45rem;
    font-size: 0.62rem;
  }

  .reference-grid ul {
    gap: 0.18rem;
    margin-top: 0.3rem;
    font-size: 0.6rem;
  }

  .reference-grid {
    grid-template-columns: 1fr;
  }

  .reference-grid h3 {
    font-size: 0.76rem;
  }

  .slide.active.hero-slide {
    display: block;
  }

  .hero-media::after {
    background: linear-gradient(90deg, rgba(25, 39, 54, 0.94), rgba(25, 39, 54, 0.72) 65%, rgba(25, 39, 54, 0.25));
  }

  .hero-copy,
  .closing-copy {
    width: 92%;
    padding: 1.25rem;
  }

  h1 {
    font-size: clamp(2.55rem, 13vw, 3.8rem);
  }

  .hero-copy h2 {
    font-size: clamp(2.15rem, 9.4vw, 3.1rem);
  }

  .hero-copy .subtitle {
    font-size: 0.9rem;
  }

  .closing-points {
    gap: 0.25rem;
    margin-top: 0.55rem;
    font-size: 0.72rem;
  }

  .controls {
    gap: 0.35rem;
    padding: 0.4rem 0.48rem;
  }

  .deck-identity {
    gap: 0.4rem;
  }

  .deck-identity-mark {
    width: 3px;
    min-height: 34px;
  }

  .deck-identity-copy strong {
    font-size: 0.68rem;
  }

  .deck-identity-copy span {
    font-size: 0.49rem;
  }

  .page-controls {
    gap: 0.22rem;
  }

  .page-controls #pageInfo {
    min-width: 2.8rem;
    font-size: 0.52rem;
  }

  .controls button {
    width: 38px;
    min-height: 38px;
    padding: 0;
  }

  .nav-label {
    display: none;
  }

  .table-wrap {
    align-items: start;
  }

  table,
  tbody,
  tr,
  td {
    display: block;
    width: 100%;
  }

  table {
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  thead {
    display: none;
  }

  tbody {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  tr {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: var(--paper);
  }

  td,
  tbody tr:last-child td {
    padding: 0.3rem 0.4rem;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent !important;
    font-size: 0.61rem;
  }

  td:last-child {
    border-bottom: 0;
  }

  td::before {
    display: block;
    margin-bottom: 0.05rem;
    color: #a06c05;
    font-size: 0.49rem;
    font-weight: 900;
    content: attr(data-label);
  }
}

@media print {
  html,
  body {
    overflow: visible;
  }

  .deck-shell {
    display: block;
    height: auto;
  }

  .toc,
  .controls {
    display: none;
  }

  .slide,
  .slide.active {
    width: 100vw;
    height: 100vh;
    display: grid;
    break-after: page;
  }
}

/* ========================================================================== */
/* 投影版 V2：舞台永遠使用全寬、正文有硬性字級底線、圖片不得裁切。              */
/* ========================================================================== */

@media (min-width: 641px) {
  :root {
    --toc-w: clamp(230px, 20vw, 320px);
  }

  .deck-shell,
  .deck-shell.toc-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }

  .toc {
    position: fixed;
    inset: 0 auto var(--footer-h) 0;
    z-index: 50;
    width: var(--toc-w);
    padding: clamp(1rem, 1.8vw, 1.6rem) clamp(0.75rem, 1.25vw, 1.15rem) 1rem;
    overflow: auto;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    box-shadow: 16px 0 40px rgba(24, 37, 52, 0.2);
    transition: transform 220ms ease, opacity 160ms ease, visibility 160ms ease;
  }

  .deck-shell.toc-collapsed .toc {
    padding: clamp(1rem, 1.8vw, 1.6rem) clamp(0.75rem, 1.25vw, 1.15rem) 1rem;
    overflow: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-100%);
  }

  .controls {
    grid-column: 1;
  }

  .controls .toc-toggle {
    position: fixed;
    top: 50%;
    left: var(--toc-w);
    z-index: 60;
    width: 48px;
    min-width: 48px;
    min-height: 112px;
    display: inline-flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.55rem 0.35rem;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-left: 0;
    border-radius: 0 14px 14px 0;
    background: var(--navy);
    box-shadow: 8px 8px 24px rgba(24, 37, 52, 0.22);
    transform: translateY(-50%);
    transition: left 220ms ease, background 160ms ease;
  }

  .deck-shell.toc-collapsed .toc-toggle {
    left: 0;
  }

  .toc-toggle-icon {
    color: var(--yellow);
    font-size: 1.55rem;
    line-height: 1;
  }

  .toc-toggle-label {
    color: #fff;
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1.05;
    writing-mode: vertical-rl;
  }

  .slide {
    --content-floor: clamp(24px, calc(0.72cqw + 2.05cqh), 32px);
    padding: clamp(0.8rem, 1.45cqw, 1.5rem) clamp(1rem, 1.8cqw, 2rem);
    gap: clamp(0.4rem, 0.8cqw, 0.8rem);
    font-size: var(--content-floor);
  }

  .slide > header {
    grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
    align-items: center;
    gap: clamp(0.75rem, 1.6cqw, 1.6rem);
    padding-bottom: 0.48em;
  }

  .slide h2 {
    font-size: clamp(1.8em, 4.1cqw, 2.3em);
    line-height: 1.08;
  }

  .slide .eyebrow {
    margin-bottom: 0.15em;
    font-size: 0.68em;
  }

  .slide .soil-frame {
    padding: 0.5em 0.62em 0.5em 0.78em;
  }

  .slide .soil-frame p {
    font-size: 0.82em;
    line-height: 1.34;
  }

  .slide-body :where(p, li, th, td),
  .slide-body :where(.check-list li, .dialogue-flow li, .reference-grid li) {
    font-size: 1em;
    line-height: 1.34;
  }

  .slide-body :where(h3) {
    font-size: 1.08em;
    line-height: 1.18;
  }

  .journey-grid p,
  .card-grid p,
  .question-grid p,
  .triple-grid p,
  .quad-grid p,
  .layer-grid p,
  .tool-grid p,
  .role-grid p,
  .evidence-grid p,
  .route-grid p,
  .assessment-canvas article p,
  .step-flow p,
  .reading-stages p,
  .target-core p,
  .action-questions p,
  .commitment-card p {
    font-size: 1em;
    line-height: 1.34;
  }

  .callout,
  .activity-output,
  .version-note,
  .quote-compare,
  .task-list span,
  .law-core > p:last-child,
  .boundary-grid ul,
  .compare-grid ul,
  .dialogue-flow ol,
  .reference-grid ul {
    font-size: 1em;
    line-height: 1.34;
  }

  .task-list b {
    font-size: 1.05em;
  }

  .slide-footer .takeaway {
    font-size: 0.84em;
    line-height: 1.25;
  }

  .slide-footer .source-note {
    font-size: 0.48em;
  }

  .case-label,
  .not-only,
  .journey-grid span,
  .number-card > span,
  .question-grid article > span,
  .triple-grid article > span,
  .myth-card > span,
  .assessment-canvas article span,
  .route-grid article > span,
  .target-core > span,
  .action-questions span,
  .commitment-card > span,
  .reading-stages span,
  .step-flow article > span,
  .law-number {
    font-size: 0.7em;
  }

  .tag-cloud span,
  .tool-chips span {
    font-size: 0.82em;
  }

  table,
  .dense-table table,
  th,
  td {
    font-size: 1em;
  }

  th,
  td {
    padding: clamp(0.42em, 0.8cqw, 0.72em);
  }

  .card-grid.four,
  .question-grid.four,
  .quad-grid,
  .layer-grid,
  .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .journey-grid article,
  .number-card,
  .question-grid.large article,
  .triple-grid article,
  .myth-card,
  .layer-grid article,
  .quad-grid article,
  .compare-grid article,
  .tool-grid article {
    min-height: 0;
  }

  .card-grid,
  .question-grid,
  .triple-grid,
  .quad-grid,
  .layer-grid,
  .tool-grid,
  .role-grid,
  .evidence-grid,
  .route-grid {
    height: 100%;
    align-content: stretch;
  }

  .card-grid article,
  .question-grid article,
  .triple-grid article,
  .quad-grid article,
  .layer-grid article,
  .tool-grid article,
  .role-grid article,
  .evidence-grid article,
  .route-grid article {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .split-layout,
  .split-layout.reverse {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: stretch;
  }

  .split-layout figure {
    width: 100%;
    height: 100%;
    max-height: 100%;
    display: grid;
    place-items: center;
    aspect-ratio: auto;
    overflow: hidden;
  }

  .split-layout figure img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    object-position: center;
  }

  #slide-teamwork .split-layout,
  #slide-family-dialogue .split-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  #slide-teamwork .role-grid {
    gap: 0.55em;
  }

  #slide-teamwork .role-grid article {
    padding: 0.68em;
  }

  #slide-family-dialogue .dialogue-flow ol {
    gap: 0.28em;
    margin-bottom: 0.55em;
    padding-left: 1.25em;
  }

  .action-plan {
    grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
    gap: 0.72em;
  }

  .action-questions {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: repeat(5, minmax(0, 1fr));
    gap: 0.38em;
  }

  .action-questions article {
    display: grid;
    grid-template-columns: 2.5em minmax(0, 1fr);
    align-items: center;
    gap: 0.65em;
    padding: 0.45em 0.68em;
  }

  .action-questions span {
    width: 2.2em;
    height: 2.2em;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--yellow-soft);
  }

  .action-questions p {
    margin: 0;
  }

  .commitment-card {
    padding: 1.1em;
  }

  .commitment-card p {
    margin-top: 0.8em;
    font-size: 1.06em;
    line-height: 1.55;
  }
}

@media (max-width: 900px) {
  :root {
    --toc-w: min(82vw, 300px);
  }

  .deck-shell,
  .deck-shell.toc-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }

  .toc {
    position: fixed;
    inset: 0 auto var(--footer-h) 0;
    z-index: 50;
    width: var(--toc-w);
    display: block;
    padding: 1rem 0.85rem;
    overflow: auto;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    box-shadow: 14px 0 34px rgba(24, 37, 52, 0.24);
    transition: transform 220ms ease, opacity 160ms ease, visibility 160ms ease;
  }

  .deck-shell.toc-collapsed .toc {
    padding: 1rem 0.85rem;
    overflow: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-100%);
  }

  .controls .toc-toggle {
    position: fixed;
    top: 50%;
    left: var(--toc-w);
    z-index: 60;
    width: 44px;
    min-width: 44px;
    min-height: 96px;
    display: inline-flex;
    flex-direction: column;
    padding: 0.45rem 0.28rem;
    border-radius: 0 12px 12px 0;
    background: var(--navy);
    transform: translateY(-50%);
    transition: left 220ms ease;
  }

  .deck-shell.toc-collapsed .toc-toggle {
    left: 0;
  }

  .toc-toggle-icon {
    color: var(--yellow);
    font-size: 1.35rem;
  }

  .toc-toggle-label {
    color: #fff;
    font-size: 0.58rem;
    font-weight: 800;
    writing-mode: vertical-rl;
  }
}

@media screen and (min-width: 641px) {
  .slide .slide-body p,
  .slide .slide-body li,
  .slide .slide-body th,
  .slide .slide-body td,
  .slide .slide-body button,
  .slide .slide-body label {
    font-size: 1em !important;
    line-height: 1.32;
  }

  .activity-layout {
    grid-template-columns: minmax(0, 1fr) minmax(210px, 0.3fr);
    gap: 0.55em;
  }

  .activity-main,
  .assessment-canvas {
    gap: 0.45em;
  }

  .task-list {
    gap: 0.4em;
  }

  .task-list li {
    min-height: 0;
    padding: 0.5em 0.55em 0.5em 2.2em;
  }

  .task-list li::before {
    top: 0.55em;
    left: 0.55em;
  }

  .assessment-canvas {
    gap: 0.4em;
  }

  .assessment-canvas article {
    min-height: 0;
    padding: 0.48em 0.55em;
  }

  .timer-panel {
    padding: 0.48em;
  }

  .timer-display {
    margin: 0.05em 0 0.35em;
    font-size: 2.35em;
  }

  .timer-actions button {
    min-height: 0;
    padding: 0.3em 0.48em;
    line-height: 1.1;
  }

  .timer-panel small {
    margin-top: 0.35em;
  }

  .commitment-card,
  .quote-compare,
  .callout,
  .activity-output,
  .version-note {
    font-size: 1em;
  }

  .split-layout figure img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    object-position: center;
  }
}

@media print {
  .toc,
  .controls {
    display: none;
  }
}