/* ===========================================
   SHORT-FORM PORTRAIT CANVAS
   Shared by the 3:4 trial editions of EP01–EP03.
   =========================================== */

:root {
  --canvas-safe-block: max(
    clamp(0.65rem, 1.8dvh, 1.25rem),
    env(safe-area-inset-top, 0px),
    env(safe-area-inset-bottom, 0px)
  );
  --canvas-safe-inline: max(
    clamp(0.65rem, 2vw, 1.25rem),
    env(safe-area-inset-left, 0px),
    env(safe-area-inset-right, 0px)
  );
  --canvas-ui-inset: clamp(0.45rem, 1.2vw, 0.8rem);
  --portrait-width: min(
    calc(100vw - (2 * var(--canvas-safe-inline))),
    calc((100dvh - (2 * var(--canvas-safe-block))) * 0.75)
  );
  --portrait-height: calc(var(--portrait-width) * 4 / 3);
  --landscape-width: min(
    calc(100vw - (2 * var(--canvas-safe-inline))),
    calc((100dvh - (2 * var(--canvas-safe-block))) * 16 / 9)
  );
  --landscape-height: calc(var(--landscape-width) * 9 / 16);
}

html,
body.portrait-mode {
  background: #0c0c0c;
}

body.portrait-mode .slide {
  width: 100vw;
  flex-basis: 100vw;
  align-items: center;
  background: #0c0c0c;
}

body.portrait-mode .slide::before,
body.portrait-mode .slide::after {
  display: none;
}

body.portrait-mode .slide-content {
  container-type: inline-size;
  position: relative;
  flex: 0 0 auto;
  width: var(--portrait-width);
  height: var(--portrait-height);
  max-width: var(--portrait-width);
  max-height: var(--portrait-height);
  margin: auto;
  padding: clamp(1rem, 4.2cqw, 2rem);
  padding-bottom: clamp(5rem, 19cqw, 7.2rem);
  overflow: hidden;
  isolation: isolate;
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    radial-gradient(circle at 88% 4%, rgba(254, 9, 144, 0.18), transparent 27%);
  background-size: 11cqw 11cqw, 11cqw 11cqw, 100% 100%;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 1.5rem 4rem rgba(0, 0, 0, 0.52);
  --title-size: clamp(2rem, 11cqw, 4.1rem);
  --h2-size: clamp(1.65rem, 7.2cqw, 3rem);
  --h3-size: clamp(0.92rem, 4.2cqw, 1.42rem);
  --body-size: clamp(0.68rem, 3.25cqw, 0.96rem);
  --small-size: clamp(0.55rem, 2.5cqw, 0.76rem);
  --slide-padding: clamp(1.35rem, 5cqw, 2.5rem);
  --content-gap: clamp(0.58rem, 2.8cqw, 1.1rem);
  --element-gap: clamp(0.3rem, 1.4cqw, 0.65rem);
}

body.portrait-mode .episode-picker {
  display: block;
  top: calc((100dvh - var(--portrait-height)) / 2 + var(--canvas-ui-inset));
  right: calc((100vw - var(--portrait-width)) / 2 + var(--canvas-ui-inset));
}

body.portrait-mode .episode-picker[hidden] {
  display: none;
}

body.portrait-mode .episode-menu {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(38rem, calc(100vw - 1.5rem));
  max-height: calc(100dvh - 5rem);
  overflow: auto;
}

@media (max-width: 760px) {
  body.portrait-mode .episode-menu {
    grid-template-columns: 1fr;
    width: min(19rem, calc(100vw - 1rem));
  }
}

body.portrait-mode .progress-bar {
  display: block;
  top: max(0px, calc((100dvh - var(--portrait-height)) / 2));
  left: calc((100vw - var(--portrait-width)) / 2);
  max-width: var(--portrait-width);
  height: clamp(0.2rem, 0.9cqw, 0.34rem);
  background: var(--pink);
  background-size: 100% 100%;
  box-shadow: none;
  animation: none;
  transition: width 0.48s var(--ease-silk);
}

/* Landscape view uses the completed horizontal deck at a logical 1920x1080 resolution. */
body.landscape-mode {
  display: block;
  width: 100%;
  background: #0c0c0c;
  overflow: hidden;
}

body.landscape-mode .slide,
body.landscape-mode .nav-dots,
body.landscape-mode .progress-bar,
body.landscape-mode .episode-picker {
  display: none;
}

.landscape-shell {
  position: fixed;
  z-index: 10;
  inset: 0;
  display: grid;
  place-items: center;
  background: #0c0c0c;
}

.landscape-stage {
  position: relative;
  width: var(--landscape-width);
  height: var(--landscape-height);
  overflow: hidden;
  background: var(--bg-primary);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 1.5rem 4rem rgba(0, 0, 0, 0.52);
}

.fixed-landscape-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 1920px !important;
  height: 1080px !important;
  max-width: none;
  max-height: none;
  border: 0;
  background: var(--bg-primary);
  transform-origin: top left;
}

[hidden] {
  display: none !important;
}

body.portrait-mode .nav-dots {
  bottom: max(0.85rem, calc((100dvh - var(--portrait-height)) / 2 + 0.72rem));
  padding: 0.28rem 0.45rem;
  gap: clamp(0.24rem, 1.15cqw, 0.45rem);
  background: rgba(0, 0, 0, 0.46);
}

body.portrait-mode .nav-dots button {
  width: clamp(0.38rem, 1.65cqw, 0.55rem);
  height: clamp(0.38rem, 1.65cqw, 0.55rem);
}

/* Page motion follows the horizontal reading direction without moving the canvas. */
body.portrait-mode .slide .slide-content {
  opacity: 0.76;
  transform: translate3d(clamp(0.55rem, 2.8cqw, 1rem), 0, 0) scale(0.992);
  transition:
    opacity 0.46s ease,
    transform 0.64s var(--ease-silk),
    box-shadow 0.5s ease;
}

body.portrait-mode .slide.active-slide .slide-content {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
}

body.portrait-mode .slide.was-visible:not(.active-slide) .slide-content {
  opacity: 0.62;
  transform: translate3d(calc(-1 * clamp(0.4rem, 2.2cqw, 0.8rem)), 0, 0) scale(0.988);
}

body.portrait-mode.is-sliding .slide.active-slide .slide-content {
  animation: portraitPageSettle 0.58s var(--ease-silk) both;
}

@keyframes portraitPageSettle {
  from {
    opacity: 0.72;
    transform: translate3d(clamp(0.7rem, 3.4cqw, 1.2rem), 0, 0) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

@media (hover: hover) and (pointer: fine) {
  body.portrait-mode .nav-dots button {
    transition: transform 0.24s var(--ease-spring), background 0.2s ease, box-shadow 0.2s ease;
  }

  body.portrait-mode .nav-dots button:hover {
    transform: scale(1.35);
    background: var(--pink);
    box-shadow: 0 0 0 clamp(0.08rem, 0.35cqw, 0.14rem) rgba(254, 9, 144, 0.2);
  }

  body.portrait-mode .outline-card:hover,
  body.portrait-mode .question-card:hover,
  body.portrait-mode .step:hover,
  body.portrait-mode .case-route:hover,
  body.portrait-mode .flow-node:hover {
    transform: translate3d(0, calc(-1 * clamp(0.16rem, 0.9cqw, 0.32rem)), 0) scale(1.012);
    border-color: var(--mint);
    box-shadow: clamp(0.28rem, 1.3cqw, 0.5rem) clamp(0.32rem, 1.5cqw, 0.58rem) 0 rgba(0, 0, 0, 0.3);
  }

  body.portrait-mode .outline-card b,
  body.portrait-mode .step b {
    transition: transform 0.3s var(--ease-spring), box-shadow 0.22s ease;
  }

  body.portrait-mode .outline-card:hover b,
  body.portrait-mode .step:hover b {
    transform: rotate(-3deg) scale(1.07);
    box-shadow: 0.18rem 0.22rem 0 rgba(0, 0, 0, 0.24);
  }

  body.portrait-mode .resource-row:hover {
    transform: translate3d(clamp(0.08rem, 0.5cqw, 0.18rem), calc(-1 * clamp(0.1rem, 0.6cqw, 0.22rem)), 0) scale(1.006);
  }
}

body.portrait-mode h1,
body.portrait-mode h2,
body.portrait-mode h3,
body.portrait-mode p {
  overflow-wrap: anywhere;
}

body.portrait-mode h1,
body.portrait-mode h2,
body.portrait-mode .quote-block {
  text-wrap: balance;
}

/* Give wrapped section headings and their first content block more breathing room. */
body.portrait-mode h2 {
  line-height: 1.15;
}

body.portrait-mode .slide-content > h2 + .subhead,
body.portrait-mode .two-column h2 + .subhead {
  margin-top: clamp(1.15rem, 5.2cqw, 1.85rem);
}

body.portrait-mode .slide-content > h2 + .question-grid,
body.portrait-mode .slide-content > h2 + .resource-table,
body.portrait-mode .slide-content > h2 + .case-route-grid,
body.portrait-mode .slide-content > h2 + .recording-placeholder {
  margin-top: clamp(1rem, 4.8cqw, 1.6rem);
}

body.portrait-mode .slide-content > :not(.decorative) {
  position: relative;
  z-index: 2;
}

/* Core vertical rhythm */
body.portrait-mode .hero-layout,
body.portrait-mode .two-column,
body.portrait-mode .outline-slide {
  grid-template-columns: 1fr;
  gap: clamp(0.75rem, 3.5cqw, 1.25rem);
}

body.portrait-mode .hero-layout {
  display: block;
  padding-top: clamp(1.35rem, 6.5cqw, 2.7rem);
  align-content: center;
}

body.portrait-mode .hero-layout > .hero-card {
  display: block;
  position: absolute;
  left: clamp(1.2rem, 5cqw, 2.25rem);
  right: clamp(1.2rem, 5cqw, 2.25rem);
  bottom: clamp(1rem, 4.8cqw, 1.9rem);
  min-height: clamp(6.8rem, 29cqw, 9.5rem);
  max-height: none;
}

body.portrait-mode .hero-card .browser-window,
body.portrait-mode .hero-card .mini-card,
body.portrait-mode .hero-card .star {
  display: block;
}

body.portrait-mode .browser-window {
  inset: 3% 14% auto auto;
  width: min(62cqw, 20rem);
  min-height: clamp(5.7rem, 22cqw, 7.8rem);
  box-shadow: 0.48rem 0.52rem 0 var(--pink);
}

body.portrait-mode .mini-card {
  width: clamp(3rem, 13cqw, 4.5rem);
}

body.portrait-mode .hero-layout .tag-row {
  display: none;
}

/* EP02 cover: series title, chapter title and summary follow the same hierarchy
   and left baseline as the original Figma cover. */
body.portrait-mode .ep02-portrait-cover .slide-content {
  --ep02-cover-left: clamp(2.25rem, 10.2cqw, 4.15rem);
  display: block;
  padding: clamp(1.25rem, 5.4cqw, 2.35rem);
  padding-bottom: clamp(3.8rem, 15cqw, 5.5rem);
  background-image:
    radial-gradient(circle at -3% -2%, rgba(254, 9, 144, 0.48), transparent 27%),
    radial-gradient(circle at 103% 92%, rgba(131, 248, 240, 0.27), transparent 25%),
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 11cqw 11cqw, 11cqw 11cqw;
}

body.portrait-mode .ep02-portrait-cover .slide-content::before {
  content: "";
  position: absolute;
  inset: clamp(0.75rem, 3cqw, 1.25rem);
  border: 1px solid rgba(247, 247, 244, 0.16);
  pointer-events: none;
  z-index: 0;
}

body.portrait-mode .ep02-portrait-cover .slide-content > * {
  position: absolute;
}

body.portrait-mode .ep02-portrait-cover .cover-glow {
  z-index: 0;
  width: clamp(7rem, 35cqw, 13rem);
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(clamp(1.5rem, 7cqw, 3rem));
  opacity: 0.42;
  pointer-events: none;
  animation: ep02CoverGlow 6.8s ease-in-out infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .cover-glow-pink {
  top: calc(-1 * clamp(3rem, 14cqw, 5.5rem));
  left: calc(-1 * clamp(3rem, 15cqw, 5.8rem));
  background: var(--pink);
}

body.portrait-mode .ep02-portrait-cover .cover-glow-mint {
  right: calc(-1 * clamp(3rem, 15cqw, 5.8rem));
  bottom: calc(-1 * clamp(3rem, 13cqw, 5rem));
  background: var(--mint);
  animation-delay: -3.1s;
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-copy {
  top: clamp(2.8rem, 12.2cqw, 4.9rem);
  left: var(--ep02-cover-left);
  right: clamp(1.5rem, 6.2cqw, 2.8rem);
  z-index: 3;
}

body.portrait-mode .ep02-portrait-cover .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  color: var(--mint);
  letter-spacing: 0;
}

body.portrait-mode .ep02-portrait-cover .eyebrow::before {
  content: "//";
  color: var(--pink);
  margin-right: 0.58em;
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-title {
  display: grid;
  justify-items: start;
  gap: clamp(0.72rem, 4.8cqw, 1.8rem);
  width: max-content;
  max-width: 100%;
  margin: clamp(1.45rem, 7.1cqw, 2.75rem) 0 0;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: clamp(3rem, 15.5cqw, 7.2rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0;
  text-transform: none;
  text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42);
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-title span {
  position: relative;
  z-index: 1;
  width: max-content;
  max-width: 100%;
  white-space: nowrap;
}

body.portrait-mode .ep02-portrait-cover .cover-title-ai,
body.portrait-mode .ep02-portrait-cover .cover-title-vibe {
  font-family: "Bowlby One", "Bowlby One SC", "Geologica", sans-serif;
}

body.portrait-mode .ep02-portrait-cover .cover-title-ai {
  color: var(--mint);
  animation: ep02CoverAiPulse 3.6s ease-in-out infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .cover-title-vibe {
  font-size: 0.78em;
}

body.portrait-mode .ep02-portrait-cover .cover-title-site {
  margin-top: 0.02em;
  padding: 0.18em 0.16em 0.22em;
  background: var(--pink);
  color: #252525;
  font-size: 0.72em;
  line-height: 0.92;
  box-shadow: 0.11em 0.14em 0 rgba(0, 0, 0, 0.4);
  transform: rotate(1.2deg) skewX(-1.5deg);
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-chapter {
  max-width: 100%;
  margin: clamp(1.65rem, 9cqw, 3.4rem) 0 0;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 4.6cqw, 2rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0;
  text-transform: none;
  text-shadow: 0.08em 0.1em 0 rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-subhead {
  max-width: clamp(18rem, 82cqw, 31rem);
  margin: clamp(1.15rem, 6.3cqw, 2.35rem) 0 0;
  color: rgba(247, 247, 244, 0.88);
  font-size: clamp(0.8rem, 3.45cqw, 1.05rem);
  line-height: 1.42;
  text-shadow: 0.05em 0.06em 0 rgba(0, 0, 0, 0.34);
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-decoration {
  right: clamp(1.55rem, 6.8cqw, 2.9rem);
  bottom: clamp(2rem, 6.8cqw, 2.8rem);
  left: var(--ep02-cover-left);
  height: clamp(19rem, 88cqw, 33rem);
  z-index: 2;
}

body.portrait-mode .ep02-portrait-cover .cover-rule {
  position: absolute;
  left: 0;
  height: clamp(0.4rem, 1.85cqw, 0.68rem);
  transform: skewX(-11deg) rotate(-1.3deg);
  box-shadow: 0.24rem 0.3rem 0 rgba(0, 0, 0, 0.28);
  animation: ep02CoverRulePulse 5.2s ease-in-out infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .cover-rule-pink {
  top: 63%;
  width: 44%;
  background: var(--pink);
}

body.portrait-mode .ep02-portrait-cover .cover-rule-mint {
  top: 68%;
  left: 10%;
  width: 52%;
  background: var(--mint);
  animation-delay: -1.8s;
}

body.portrait-mode .ep02-portrait-cover .cover-brief-panel {
  position: absolute;
  top: 70%;
  right: 4%;
  bottom: auto;
  width: 68%;
  height: 27%;
  overflow: hidden;
  border: clamp(0.13rem, 0.58cqw, 0.23rem) solid rgba(247, 247, 244, 0.7);
  background:
    linear-gradient(rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    #20242a;
  background-size: 12% 28%, 12% 28%, auto;
  box-shadow: clamp(0.28rem, 1.25cqw, 0.52rem) clamp(0.34rem, 1.5cqw, 0.62rem) 0 var(--pink);
  transform: rotate(0.8deg);
  animation: ep02CoverPanelFloat 6.8s var(--ease-silk) infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .cover-brief-top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(0.48rem, 2.1cqw, 0.78rem);
  height: 27%;
  align-items: center;
  padding-inline: 6%;
  background: var(--pink);
  color: #20242a;
}

body.portrait-mode .ep02-portrait-cover .cover-brief-dots {
  display: flex;
  gap: clamp(0.2rem, 0.9cqw, 0.34rem);
}

body.portrait-mode .ep02-portrait-cover .cover-brief-dots span {
  width: clamp(0.35rem, 1.6cqw, 0.6rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: #20242a;
  animation: ep02CoverDotPulse 3.6s ease-in-out infinite;
  will-change: transform, opacity;
}

body.portrait-mode .ep02-portrait-cover .cover-brief-dots span:nth-child(2) { animation-delay: -1.2s; }
body.portrait-mode .ep02-portrait-cover .cover-brief-dots span:nth-child(3) { animation-delay: -2.4s; }

body.portrait-mode .ep02-portrait-cover .cover-brief-tab {
  width: 44%;
  height: clamp(0.28rem, 1.2cqw, 0.44rem);
  background: #20242a;
  opacity: 0.72;
  justify-self: center;
  transform: skewX(-9deg);
  transform-origin: left center;
  animation: ep02CoverTabPulse 4.8s ease-in-out infinite alternate;
  will-change: transform, opacity;
}

body.portrait-mode .ep02-portrait-cover .cover-brief-control {
  width: clamp(1rem, 4.4cqw, 1.6rem);
  height: clamp(0.28rem, 1.2cqw, 0.44rem);
  background: #20242a;
  opacity: 0.46;
  animation: ep02CoverControlPulse 3.9s ease-in-out -1.4s infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 9%;
  height: 73%;
  padding: 7% 7% 8%;
  align-items: stretch;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 10% 12%;
  align-items: center;
  padding: 11%;
  border: 1px solid rgba(247, 247, 244, 0.24);
  background: rgba(247, 247, 244, 0.025);
  box-shadow: clamp(0.16rem, 0.7cqw, 0.28rem) clamp(0.2rem, 0.9cqw, 0.34rem) 0 rgba(0, 0, 0, 0.24);
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-square {
  grid-row: 1 / 3;
  width: clamp(1.2rem, 5.1cqw, 1.85rem);
  aspect-ratio: 1;
  background: var(--mint);
  box-shadow: 0.12rem 0.15rem 0 rgba(0, 0, 0, 0.22);
  animation: ep02CoverSquareFloat 5.2s var(--ease-silk) -0.8s infinite alternate;
  will-change: transform;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-line,
body.portrait-mode .ep02-portrait-cover .cover-placeholder-copy-line {
  display: block;
  height: clamp(0.3rem, 1.35cqw, 0.48rem);
  transform-origin: left center;
  animation: ep02CoverLineBreath 4.6s ease-in-out infinite alternate;
  will-change: transform, opacity;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-line-pink {
  width: 88%;
  background: var(--pink);
  animation-delay: -1.1s;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-line-muted {
  width: 66%;
  background: rgba(247, 247, 244, 0.38);
  animation-delay: -2.6s;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-copy {
  display: grid;
  align-content: center;
  gap: 14%;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-copy-mint {
  width: 92%;
  background: var(--mint);
  animation-delay: -0.45s;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-copy-muted {
  width: 72%;
  background: rgba(247, 247, 244, 0.38);
  animation-delay: -1.8s;
}

body.portrait-mode .ep02-portrait-cover .cover-placeholder-copy-pink {
  width: 56%;
  background: var(--pink);
  animation-delay: -3.15s;
}

body.portrait-mode .ep02-portrait-cover .cover-star {
  position: absolute;
  right: 1.5%;
  top: 68%;
  width: clamp(1.25rem, 5.8cqw, 2.15rem);
  aspect-ratio: 1;
  background: var(--mint);
  clip-path: polygon(50% 0%, 61% 37%, 100% 50%, 61% 63%, 50% 100%, 39% 63%, 0% 50%, 39% 37%);
  filter: drop-shadow(0.25rem 0.3rem 0 rgba(0, 0, 0, 0.32));
  animation: ep02CoverSpark 4.5s ease-in-out infinite alternate;
}

body.portrait-mode .ep02-portrait-cover .ep02-cover-index {
  top: clamp(1.35rem, 5.4cqw, 2.3rem);
  right: clamp(1.75rem, 7.8cqw, 3.5rem);
  z-index: 2;
  color: rgba(247, 247, 244, 0.48);
  font-family: "Bowlby One", var(--font-display);
  font-size: clamp(1.1rem, 5.2cqw, 1.9rem);
  line-height: 1;
  text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.3);
}

@keyframes ep02CoverSpark {
  from { transform: rotate(-8deg) scale(0.92); }
  to { transform: rotate(8deg) scale(1.08); }
}

@keyframes ep02CoverGlow {
  from { opacity: 0.24; transform: scale(0.9); }
  to { opacity: 0.52; transform: scale(1.08); }
}

@keyframes ep02CoverAiPulse {
  from { color: #72eae4; text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42); }
  to { color: #a2fffa; text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42), 0 0 0.35em rgba(131, 248, 240, 0.32); }
}

@keyframes ep02CoverRulePulse {
  from { opacity: 0.72; filter: saturate(0.92); }
  to { opacity: 1; filter: saturate(1.08); }
}

@keyframes ep02CoverPanelFloat {
  from { transform: translate3d(0, 0, 0) rotate(0.8deg); }
  to { transform: translate3d(-0.16rem, -0.28rem, 0) rotate(0.25deg); }
}

@keyframes ep02CoverDotPulse {
  0%, 100% { opacity: 0.34; transform: scale(0.88); }
  48% { opacity: 0.92; transform: scale(1.12); }
}

@keyframes ep02CoverTabPulse {
  from { opacity: 0.58; transform: scaleX(0.84) skewX(-9deg); }
  to { opacity: 0.8; transform: scaleX(1) skewX(-9deg); }
}

@keyframes ep02CoverControlPulse {
  from { opacity: 0.28; transform: scaleX(0.72); }
  to { opacity: 0.56; transform: scaleX(1); }
}

@keyframes ep02CoverSquareFloat {
  from { transform: translate3d(0, 0, 0) rotate(-1deg); }
  to { transform: translate3d(0.14rem, -0.24rem, 0) rotate(2deg); }
}

@keyframes ep02CoverLineBreath {
  from { opacity: 0.66; transform: scaleX(0.86); }
  to { opacity: 1; transform: scaleX(1); }
}

body.portrait-mode .subhead {
  max-width: none;
  font-size: var(--body-size);
  line-height: 1.48;
}

body.portrait-mode .eyebrow {
  font-size: clamp(0.58rem, 2.8cqw, 0.82rem);
}

body.portrait-mode .tag-row,
body.portrait-mode .source-pills {
  gap: clamp(0.28rem, 1.5cqw, 0.55rem);
  margin-top: clamp(0.55rem, 2.5cqw, 0.9rem);
}

body.portrait-mode .tag,
body.portrait-mode .source-pill {
  min-height: auto;
  padding: 0.22rem 0.48rem;
  font-size: clamp(0.48rem, 2.2cqw, 0.66rem);
}

/* Cards and simple grids */
body.portrait-mode .step-list {
  gap: clamp(0.38rem, 1.8cqw, 0.65rem);
}

body.portrait-mode .step {
  gap: clamp(0.45rem, 2cqw, 0.72rem);
  padding: clamp(0.5rem, 2.4cqw, 0.78rem);
}

body.portrait-mode .step b,
body.portrait-mode .question-card b {
  width: clamp(1.75rem, 8cqw, 2.3rem);
  font-size: clamp(0.6rem, 2.8cqw, 0.82rem);
}

body.portrait-mode .step h3,
body.portrait-mode .question-card h3,
body.portrait-mode .decision-card h3,
body.portrait-mode .flow-node strong,
body.portrait-mode .road-item h3,
body.portrait-mode .ai-card h3 {
  font-size: clamp(0.82rem, 3.7cqw, 1.12rem);
}

body.portrait-mode .step p,
body.portrait-mode .question-card p,
body.portrait-mode .decision-card p,
body.portrait-mode .flow-node p,
body.portrait-mode .ai-card p,
body.portrait-mode .road-item p {
  font-size: clamp(0.58rem, 2.7cqw, 0.77rem);
  line-height: 1.38;
}

body.portrait-mode .question-grid,
body.portrait-mode .decision-grid,
body.portrait-mode .ai-grid,
body.portrait-mode .case-route-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.42rem, 2cqw, 0.72rem);
  margin-top: clamp(0.7rem, 3cqw, 1rem);
}

body.portrait-mode .question-card,
body.portrait-mode .decision-card,
body.portrait-mode .ai-card,
body.portrait-mode .case-route {
  min-height: 0;
  padding: clamp(0.58rem, 2.7cqw, 0.9rem);
}

body.portrait-mode .question-card b {
  margin-bottom: clamp(0.35rem, 1.8cqw, 0.58rem);
}

body.portrait-mode .ai-card .tag-row,
body.portrait-mode .question-card p,
body.portrait-mode .decision-card p {
  margin-top: clamp(0.3rem, 1.4cqw, 0.5rem);
}

body.portrait-mode .case-route h3 {
  margin-top: clamp(0.35rem, 1.8cqw, 0.65rem);
  font-size: clamp(0.9rem, 4.2cqw, 1.25rem);
}

body.portrait-mode .case-route p {
  margin-top: clamp(0.38rem, 1.8cqw, 0.65rem);
  font-size: clamp(0.58rem, 2.7cqw, 0.78rem);
  line-height: 1.38;
}

/* EP02 rhythm: keep stacked sections compact rather than stretching two rows
   across the full portrait canvas. */
body.portrait-mode .ep02-outline-page,
body.portrait-mode .ep02-problem-page,
body.portrait-mode .ep02-case-page {
  align-content: start;
}

body.portrait-mode .ep02-outline-page {
  gap: clamp(2.2rem, 10cqw, 3.8rem);
  padding-top: clamp(5.4rem, 22cqw, 8.2rem);
}

body.portrait-mode .ep02-problem-page {
  gap: clamp(2rem, 8.5cqw, 3.2rem);
  padding-top: clamp(5.2rem, 21cqw, 7.8rem);
}

body.portrait-mode .ep02-case-page {
  gap: clamp(1.05rem, 4.7cqw, 1.7rem);
  padding-top: clamp(3.2rem, 13.5cqw, 5rem);
}

body.portrait-mode .ep02-case-page .recording-placeholder {
  width: 80%;
  min-height: clamp(9rem, 34cqw, 12rem);
  max-height: clamp(10rem, 36cqw, 13rem);
  justify-self: end;
}

body.portrait-mode .ep02-inventory-page .resource-row {
  min-height: clamp(3rem, 12.4cqw, 4.3rem);
}

body.portrait-mode .ep02-inventory-page .resource-row p {
  font-size: clamp(0.52rem, 2.35cqw, 0.7rem);
  line-height: 1.32;
}

body.portrait-mode .ep02-problems-page .case-route-grid {
  grid-template-columns: 1fr;
  gap: clamp(0.48rem, 2.2cqw, 0.78rem);
}

body.portrait-mode .ep02-problems-page .case-route {
  min-height: 0;
  padding: clamp(0.68rem, 3cqw, 1rem);
}

body.portrait-mode .ep02-problems-page .case-route h3 {
  margin-top: clamp(0.28rem, 1.2cqw, 0.42rem);
  font-size: clamp(0.86rem, 3.9cqw, 1.18rem);
}

body.portrait-mode .ep02-problems-page .case-route p {
  margin-top: clamp(0.28rem, 1.25cqw, 0.46rem);
}

/* Outline, flows and timeline-like slides */
body.portrait-mode .outline-hook {
  max-width: none;
  margin-top: clamp(0.72rem, 3cqw, 1.1rem);
  font-size: clamp(1.05rem, 4.9cqw, 1.55rem);
}

body.portrait-mode .outline-copy::after {
  bottom: calc(-1 * clamp(0.72rem, 3cqw, 1rem));
}

body.portrait-mode .outline-list {
  gap: clamp(0.42rem, 2cqw, 0.7rem);
}

body.portrait-mode .outline-card {
  min-height: clamp(3.4rem, 15cqw, 4.8rem);
  padding: clamp(0.5rem, 2.4cqw, 0.78rem);
  gap: clamp(0.5rem, 2.2cqw, 0.75rem);
}

body.portrait-mode .outline-card b {
  width: clamp(2.05rem, 9.5cqw, 3rem);
  font-size: clamp(0.7rem, 3.1cqw, 0.95rem);
}

body.portrait-mode .outline-card h3 {
  font-size: clamp(0.9rem, 4.1cqw, 1.35rem);
}

body.portrait-mode .workflow {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.38rem, 1.8cqw, 0.65rem);
  margin-top: clamp(0.72rem, 3cqw, 1rem);
}

body.portrait-mode .flow-node {
  min-height: clamp(4.6rem, 20cqw, 6.5rem);
  padding: clamp(0.5rem, 2.3cqw, 0.75rem);
}

body.portrait-mode .flow-node:not(:last-child)::after {
  display: none;
}

body.portrait-mode .roadmap {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.35rem, 1.6cqw, 0.58rem);
  margin-top: clamp(0.65rem, 2.8cqw, 0.95rem);
}

body.portrait-mode .road-item {
  min-height: clamp(3.8rem, 15.5cqw, 5.4rem);
  padding: clamp(0.4rem, 1.9cqw, 0.64rem);
}

body.portrait-mode .road-item p {
  display: none;
}

body.portrait-mode .road-item small {
  font-size: clamp(0.44rem, 2cqw, 0.6rem);
}

/* Dense tables: retain the useful comparison, remove tertiary columns. */
body.portrait-mode .compare-table,
body.portrait-mode .domestic-table {
  grid-template-columns: 0.82fr 1.35fr;
  gap: clamp(0.22rem, 1cqw, 0.4rem);
  margin-top: clamp(0.62rem, 2.8cqw, 0.95rem);
  max-height: none;
}

body.portrait-mode .compare-table .table-cell:nth-child(4n + 3),
body.portrait-mode .compare-table .table-cell:nth-child(4n + 4),
body.portrait-mode .domestic-table .table-cell:nth-child(4n + 3),
body.portrait-mode .domestic-table .table-cell:nth-child(4n + 4) {
  display: none;
}

body.portrait-mode .table-cell {
  min-height: clamp(2rem, 8.5cqw, 3rem);
  padding: clamp(0.35rem, 1.8cqw, 0.58rem);
  font-size: clamp(0.5rem, 2.3cqw, 0.68rem);
  line-height: 1.28;
}

body.portrait-mode .table-head,
body.portrait-mode .tool-name {
  font-size: clamp(0.58rem, 2.7cqw, 0.8rem);
}

/* Resource lists retain all three pieces of information in a compact row. */
body.portrait-mode .resource-table {
  gap: clamp(0.2rem, 0.9cqw, 0.36rem);
  margin-top: clamp(0.62rem, 2.8cqw, 0.95rem);
}

body.portrait-mode .resource-table.resource-table-lowered {
  margin-top: clamp(1.45rem, 7.5cqw, 2.5rem);
}

body.portrait-mode .resource-row {
  grid-template-columns: minmax(4.5rem, 0.66fr) minmax(0, 1fr) minmax(0, 0.98fr);
  min-height: clamp(2.7rem, 11.2cqw, 3.9rem);
  gap: clamp(0.25rem, 1.2cqw, 0.45rem);
  padding: clamp(0.32rem, 1.6cqw, 0.52rem);
}

body.portrait-mode .resource-row.resource-head span,
body.portrait-mode .resource-name {
  font-size: clamp(0.54rem, 2.55cqw, 0.75rem);
}

body.portrait-mode .resource-row p,
body.portrait-mode .resource-links {
  font-size: clamp(0.48rem, 2.15cqw, 0.64rem);
  line-height: 1.26;
}

body.portrait-mode .resource-links {
  gap: 0.18rem 0.32rem;
}

body.portrait-mode .skills-resource-slide .slide-content {
  justify-content: flex-start;
  padding-bottom: clamp(2.5rem, 11cqw, 3.6rem);
}

/* Closing pages and recording placeholders */
body.portrait-mode .quote-block {
  max-width: none;
  font-size: clamp(1.75rem, 9.2cqw, 3.45rem);
}

body.portrait-mode .closing-ribbon {
  top: auto;
  right: calc(-1 * clamp(1rem, 8cqw, 2.5rem));
  bottom: clamp(1rem, 4.5cqw, 1.7rem);
  width: clamp(7rem, 31cqw, 10rem);
  height: clamp(0.7rem, 3.2cqw, 1.05rem);
  opacity: 0.72;
  z-index: 0;
}

body.portrait-mode .closing-dot {
  right: clamp(1.35rem, 7cqw, 2.6rem);
  bottom: clamp(1.65rem, 8cqw, 3rem);
  width: clamp(0.6rem, 3.1cqw, 1rem);
  opacity: 0.78;
  z-index: 0;
}

body.portrait-mode .star.decorative {
  width: clamp(2.2rem, 10cqw, 3.6rem) !important;
  opacity: 0.58;
  z-index: 0;
  filter: drop-shadow(0.24rem 0.3rem 0 rgba(0, 0, 0, 0.2));
}

body.portrait-mode .recording-placeholder {
  min-height: clamp(9rem, 38cqw, 13rem);
  max-height: clamp(10rem, 42cqw, 14rem);
}

body.portrait-mode .case-note,
body.portrait-mode .small-note {
  font-size: clamp(0.5rem, 2.25cqw, 0.66rem);
}

@media (max-height: 620px) {
  body.portrait-mode .slide-content {
    padding: clamp(0.85rem, 4cqw, 1.5rem);
    padding-bottom: clamp(2.6rem, 9cqw, 3.4rem);
  }

  body.portrait-mode .tag-row,
  body.portrait-mode .source-pills {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.portrait-mode *,
  body.portrait-mode *::before,
  body.portrait-mode *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}