@font-face {
  font-family: "Circular XX";
  src: url("/fonts/CircularXX-Regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Circular XX";
  src: url("/fonts/CircularXX-Medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Circular XX";
  src: url("/fonts/CircularXX-Bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --landing-page: #f7f6f2;
  --landing-surface: #fffefc;
  --landing-surface-soft: #e4eefa;
  --landing-ink: #21333e;
  --landing-muted: #587081;
  --landing-line: #c9dcf3;
  --landing-blue: #2a5283;
  --landing-blue-strong: #16344e;
  --landing-blue-hover: #244a74;
  --landing-blue-ink: #fffefc;
  --landing-nav: rgb(22 52 78 / 90%);
  --landing-shadow: 0 24px 70px rgb(22 52 78 / 15%);
  --landing-radius: 24px;
  --landing-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--landing-page);
  color: var(--landing-ink);
  font-family: "Circular XX", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

body,
button,
a {
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button {
  color: inherit;
}

.pl-landing-body.is-splash-active {
  overflow: hidden;
}

.pl-splash {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  overflow: hidden;
  background: #16344e;
  opacity: 1;
  place-items: center;
  transition:
    opacity 560ms cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear 560ms;
}

.pl-splash__inner {
  display: grid;
  justify-items: center;
  gap: 22px;
  transform: translateY(-1vh);
  transition:
    opacity 420ms ease,
    transform 560ms var(--landing-ease);
}

.pl-splash__mark {
  width: 112px;
  height: 112px;
  overflow: hidden;
  transform-origin: center 68%;
}

.pl-splash.is-looping .pl-splash__mark {
  animation: landing-splash-mark-cycle 4.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.pl-splash__mark img {
  width: 112px;
  max-width: none;
  height: 112px;
}

@keyframes landing-splash-mark-cycle {
  0% {
    opacity: 0;
  }
  4%, 97% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.pl-splash__status {
  margin: 0;
  color: rgb(255 255 255 / 68%);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.pl-splash__dots {
  display: inline-block;
  width: 0;
  overflow: hidden;
  vertical-align: bottom;
  animation: landing-splash-dots 1.8s steps(4, end) infinite;
}

@keyframes landing-splash-dots {
  to { width: 1.2em; }
}

.pl-splash.is-leaving {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.pl-splash.is-leaving .pl-splash__inner {
  opacity: 0;
  transform: translateY(calc(-1vh - 8px)) scale(0.98);
}

.pl-splash.is-leaving .pl-splash__mark {
  opacity: 0;
  animation: none;
}

.pl-landing-body.is-splash-active .pl-landing-brand img {
  opacity: 0;
}

.pl-landing-brand img {
  transition: opacity 120ms ease;
}

.pl-landing-body.is-splash-active .pl-landing-menu > a:not(.pl-landing-button),
.pl-landing-body.is-splash-active .pl-landing-nav__toggle,
.pl-landing-body.is-splash-active .pl-landing-nav__access,
.pl-landing-body.is-splash-active .pl-cinema__copy h1,
.pl-landing-body.is-splash-active .pl-cinema__prompt-sentence,
.pl-landing-body.is-splash-active .pl-cinema__prompt-arrow,
.pl-landing-body.is-splash-active .pl-cinema__generator-preview {
  animation-play-state: paused;
}

.pl-landing-skip {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 300;
  padding: 10px 16px;
  border-radius: var(--pl-radius-control);
  background: var(--landing-blue-strong);
  color: #fff;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms var(--landing-ease);
}

.pl-landing-skip:focus {
  transform: translateY(0);
}

.pl-landing-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 220;
  height: 4px;
  pointer-events: none;
}

.pl-landing-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: #c9dcf3;
  transform: scaleX(0);
  transform-origin: left center;
  animation: landing-page-progress linear both;
  animation-timeline: scroll(root block);
}

@keyframes landing-page-progress {
  to { transform: scaleX(1); }
}

.pl-landing-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  padding-top: 10px;
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 180ms ease,
    transform 260ms var(--landing-ease);
  will-change: transform;
}

.pl-landing-nav.is-hidden:not(.is-open) {
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(-100% - 16px));
}

.pl-landing-nav__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto minmax(180px, 1fr);
  width: calc(100% - 32px);
  min-height: 68px;
  padding: 8px 8px 8px 20px;
  margin-inline: auto;
  align-items: center;
  gap: 28px;
  border-radius: 16px;
  background: transparent;
  transition:
    background 200ms ease,
    box-shadow 220ms ease;
}

.pl-landing-brand {
  display: inline-flex;
  width: 170px;
  flex: 0 0 auto;
  align-items: center;
}

.pl-landing-brand img {
  width: 100%;
  height: auto;
}

.pl-landing-menu {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: clamp(18px, 2.4vw, 38px);
}

.pl-landing-menu > a:not(.pl-landing-button) {
  position: relative;
  color: #fff;
  font-size: 0.94rem;
  font-weight: var(--pl-font-weight-regular);
  text-decoration: none;
  animation: landing-header-item-in 540ms var(--landing-ease) both;
}

.pl-landing-menu > a:nth-child(1) { animation-delay: 160ms; }
.pl-landing-menu > a:nth-child(2) { animation-delay: 215ms; }
.pl-landing-menu > a:nth-child(3) { animation-delay: 270ms; }
.pl-landing-menu > a:nth-child(4) { animation-delay: 325ms; }

@keyframes landing-header-item-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pl-landing-menu > a:not(.pl-landing-button)::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  border-radius: 99px;
  background: #c9dcf3;
  content: "";
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 220ms var(--landing-ease);
}

.pl-landing-menu > a:hover::after,
.pl-landing-menu > a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.pl-landing-nav__toggle {
  display: none;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: var(--pl-radius-control);
  background: transparent;
  color: #fff;
  cursor: pointer;
  animation: landing-header-item-in 560ms var(--landing-ease) 240ms both;
}

.pl-landing-nav__toggle-icon {
  width: 22px;
}

.pl-landing-button {
  display: inline-flex;
  min-height: 52px;
  padding: 0 var(--pl-button-padding-inline-lg);
  align-items: center;
  justify-content: center;
  border: 1px solid var(--landing-blue);
  border-radius: var(--pl-button-radius);
  background: var(--landing-blue);
  color: var(--landing-blue-ink);
  font-weight: var(--pl-button-font-weight);
  line-height: var(--pl-button-line-height);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms var(--landing-ease),
    box-shadow 180ms ease;
}

.pl-landing-button:hover {
  border-color: var(--landing-blue-hover);
  background: var(--landing-blue-hover);
  box-shadow: 0 10px 24px rgb(42 82 131 / 18%);
  transform: translateY(-2px);
}

.pl-landing-button:active {
  transform: translateY(0) scale(0.98);
}

.pl-landing-button--compact {
  min-height: 44px;
  padding-inline: var(--pl-button-padding-inline-md);
}

.pl-landing-nav__access {
  min-height: 44px;
  justify-self: end;
  padding-inline: var(--pl-button-padding-inline-md);
  animation: landing-header-action-in 620ms var(--landing-ease) 380ms both;
}

@keyframes landing-header-action-in {
  from {
    opacity: 0;
    clip-path: inset(35% 0 35% 0 round 8px);
  }
  to {
    opacity: 1;
    clip-path: inset(0 round 8px);
  }
}

.pl-landing-menu__access {
  display: none;
}

/* Keep the pre-rebuild Razor markup correctly composed while a local server
   is still running: its access action remains inside the nav element. */
@media (min-width: 861px) {
  .pl-landing-menu > .pl-landing-button:not(.pl-landing-menu__access) {
    position: absolute;
    top: 50%;
    right: 8px;
    translate: 0 -50%;
  }
}

.pl-landing-nav .pl-landing-button {
  position: relative;
  isolation: isolate;
  min-height: 44px;
  padding: 5px 5px 5px 16px;
  overflow: hidden;
  gap: 10px;
  border-color: transparent;
  background: linear-gradient(135deg, var(--pl-color-blue-100), #d8e7f8);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 64%),
    inset 0 -1px 0 rgb(42 82 131 / 10%),
    0 7px 20px rgb(3 11 17 / 12%);
  color: var(--landing-blue-strong);
  transform: translateZ(0);
  transition:
    background 260ms ease,
    box-shadow 280ms ease,
    transform 280ms var(--landing-ease);
}

.pl-landing-nav .pl-landing-button::before {
  position: absolute;
  top: -40%;
  bottom: -40%;
  left: -52%;
  z-index: 0;
  width: 46%;
  background: linear-gradient(
    108deg,
    transparent 6%,
    rgb(255 255 255 / 16%) 28%,
    rgb(255 255 255 / 82%) 49%,
    rgb(255 255 255 / 20%) 66%,
    transparent 92%
  );
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translateX(0) skewX(-16deg);
}

.pl-landing-nav .pl-landing-button > * {
  position: relative;
  z-index: 1;
}

.pl-landing-nav .pl-landing-button:hover {
  border-color: transparent;
  background: linear-gradient(135deg, #deebf9, var(--pl-color-blue-200));
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 78%),
    inset 0 -1px 0 rgb(42 82 131 / 12%),
    0 13px 30px rgb(3 11 17 / 20%);
  transform: translateY(-1px);
}

.pl-landing-nav .pl-landing-button:hover::before,
.pl-landing-nav .pl-landing-button:focus-visible::before {
  animation: pl-access-light-sweep 640ms cubic-bezier(0.2, 0.75, 0.25, 1) both;
}

@keyframes pl-access-light-sweep {
  0% {
    opacity: 0;
    transform: translateX(0) skewX(-16deg);
  }
  18% { opacity: 0.72; }
  72% { opacity: 0.58; }
  100% {
    opacity: 0;
    transform: translateX(340%) skewX(-16deg);
  }
}

.pl-landing-access__label {
  padding-inline: 2px;
  letter-spacing: -0.01em;
  transition:
    letter-spacing 260ms var(--landing-ease),
    transform 260ms var(--landing-ease);
}

.pl-landing-nav .pl-landing-button:hover .pl-landing-access__label,
.pl-landing-nav .pl-landing-button:focus-visible .pl-landing-access__label {
  letter-spacing: 0;
  transform: translateX(-1px);
}

.pl-landing-access__book {
  position: relative;
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 7px;
  background: linear-gradient(145deg, var(--pl-color-blue-200), #b9d1eb);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 48%),
    inset 0 -1px 0 rgb(22 52 78 / 12%),
    0 3px 8px rgb(22 52 78 / 14%);
  perspective: 90px;
  place-items: center;
  transition:
    background 220ms ease,
    box-shadow 220ms ease,
    transform 260ms var(--landing-ease);
}

.pl-landing-access__book img {
  position: absolute;
  width: 20px;
  height: 20px;
  transition:
    opacity 150ms ease,
    transform 260ms var(--landing-ease);
  transform-origin: left center;
}

.pl-landing-access__book-closed {
  opacity: 1;
  transform: rotateY(0) scale(1);
  transition-delay: 80ms;
}

.pl-landing-access__book-open {
  opacity: 0;
  transform: rotateY(-82deg) scale(0.82);
  transition-delay: 0ms;
}

.pl-landing-nav .pl-landing-button:hover .pl-landing-access__book-closed,
.pl-landing-nav .pl-landing-button:focus-visible .pl-landing-access__book-closed {
  opacity: 0;
  transform: rotateY(82deg) scale(0.82);
  transition-delay: 0ms;
}

.pl-landing-nav .pl-landing-button:hover .pl-landing-access__book-open,
.pl-landing-nav .pl-landing-button:focus-visible .pl-landing-access__book-open {
  opacity: 1;
  transform: rotateY(0) scale(1);
  transition-delay: 90ms;
}

.pl-landing-nav .pl-landing-button:hover .pl-landing-access__book,
.pl-landing-nav .pl-landing-button:focus-visible .pl-landing-access__book {
  background: linear-gradient(145deg, #c4d8ef, #a9c5e4);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 54%),
    inset 0 -1px 0 rgb(22 52 78 / 14%),
    0 4px 10px rgb(22 52 78 / 18%);
  transform: translateX(1px) scale(1.035);
}

.pl-landing-nav .pl-landing-button:active .pl-landing-access__book {
  transform: translateX(1px) scale(0.94);
}

.pl-landing-nav .pl-landing-button:active {
  box-shadow:
    inset 0 2px 5px rgb(42 82 131 / 14%),
    0 3px 10px rgb(3 11 17 / 12%);
  transform: translateY(0) scale(0.985);
}

/* Temporary visual parity for a local server still rendering the previous
   Razor markup. The full two-state animation appears after the next restart. */
.pl-landing-nav .pl-landing-button:not(:has(.pl-landing-access__book))::after {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 7px;
  background:
    var(--pl-color-blue-200)
    url("/images/landing/book-closed-solar.svg") center / 20px no-repeat;
  content: "";
}

.pl-landing-nav .pl-landing-button:not(:has(.pl-landing-access__book)):hover::after {
  background-image: url("/images/landing/book-open-solar.svg");
}

.pl-landing-nav.is-returning .pl-landing-nav__inner {
  background: var(--landing-nav);
  box-shadow: 0 16px 42px rgb(8 24 38 / 26%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #0a6e77;
  outline-offset: 4px;
}

/* The opening chapter stays pinned while the media grows from a browser into
   the full classroom scene. Native view timelines keep scroll work off JS. */
.pl-cinema {
  position: relative;
  height: 260dvh;
  min-height: 1500px;
  background:
    radial-gradient(circle at 82% 18%, rgb(53 112 190 / 30%), transparent 31%),
    radial-gradient(circle at 12% 82%, rgb(42 82 131 / 42%), transparent 36%),
    var(--landing-blue-strong);
  view-timeline-name: --cinema;
  view-timeline-axis: block;
}

.pl-cinema__sticky {
  position: sticky;
  top: 0;
  height: 100dvh;
  min-height: 640px;
  overflow: hidden;
}

.pl-cinema__copy {
  position: absolute;
  top: clamp(104px, 13vh, 138px);
  left: max(6vw, calc((100vw - 1360px) / 2));
  z-index: 3;
  display: grid;
  width: min(88vw, 1360px);
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  column-gap: clamp(48px, 7vw, 128px);
  row-gap: 28px;
  animation: landing-copy-away linear both;
  animation-range: cover 27.8% cover 45%;
  animation-timeline: --cinema;
}

.pl-cinema__copy h1 {
  --landing-intro-rest-y: 0px;
  max-width: 15ch;
  margin: 0;
  font-size: clamp(3.5rem, 5.35vw, 5.6rem);
  font-weight: 500;
  letter-spacing: -0.058em;
  line-height: 0.94;
  color: #fff;
  grid-column: 1;
  grid-row: 1;
  animation: landing-hero-item-in 760ms var(--landing-ease) 90ms both;
}

.pl-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.pl-cinema__prompt-demo {
  display: contents;
}

.pl-cinema__prompt-sentence {
  --landing-intro-rest-y: 0px;
  margin: 0;
  color: #d6e4f4;
  font-size: clamp(1.05rem, 1.55vw, 1.32rem);
  line-height: 1.4;
  grid-column: 1;
  grid-row: 2;
  align-self: start;
  animation: landing-hero-item-in 680ms var(--landing-ease) 310ms both;
}

.pl-cinema__prompt-kind {
  display: inline-block;
  min-width: 10.4ch;
  color: #fff;
  font-weight: 500;
}

.pl-cinema__prompt-arrow {
  --landing-intro-rest-y: 0px;
  width: clamp(320px, 38vw, 560px);
  height: auto;
  margin-top: 3px;
  margin-left: clamp(192px, 19vw, 272px);
  grid-column: 1 / 3;
  grid-row: 2;
  align-self: start;
  justify-self: start;
  pointer-events: none;
  user-select: none;
  animation: landing-hero-item-in 720ms var(--landing-ease) 470ms both;
}

.pl-cinema__generator-preview {
  --landing-intro-rest-y: 20px;
  min-width: 0;
  margin-bottom: clamp(0px, 1.8vh, 18px);
  grid-column: 2;
  grid-row: 1;
  align-self: end;
  transform: translateY(20px);
  animation: landing-hero-item-in 720ms var(--landing-ease) 260ms both;
}

@keyframes landing-hero-item-in {
  from {
    opacity: 0;
    transform: translateY(calc(var(--landing-intro-rest-y) + 22px));
  }
  to {
    opacity: 1;
    transform: translateY(var(--landing-intro-rest-y));
  }
}

.pl-cinema__generator-label {
  display: block;
  margin-bottom: 7px;
  color: rgb(228 238 250 / 78%);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.pl-cinema__generator-control {
  display: flex;
  min-height: 58px;
  padding: 8px 14px;
  overflow: hidden;
  align-items: center;
  border: 1px solid rgb(201 220 243 / 34%);
  border-radius: 10px;
  background: rgb(9 31 49 / 44%);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 8%),
    0 10px 28px rgb(3 11 17 / 13%);
  color: #f7fbff;
  gap: 10px;
}

.pl-cinema__generator-thumbnail {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 7px;
  box-shadow: 0 0 0 1px rgb(255 255 255 / 18%);
  animation: pl-prompt-thumbnail-in 280ms var(--landing-ease) both;
}

.pl-cinema__generator-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 34%;
}

.pl-cinema__generator-example {
  min-width: 0;
  overflow: hidden;
  font-size: 0.92rem;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pl-cinema__typing-cursor {
  width: 1px;
  height: 1.15em;
  flex: 0 0 auto;
  background: #c9dcf3;
  animation: pl-prompt-cursor 820ms step-end infinite;
}

@keyframes pl-prompt-thumbnail-in {
  from {
    opacity: 0;
    transform: scale(0.82) translateY(3px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes pl-prompt-cursor {
  0%, 48% { opacity: 1; }
  49%, 100% { opacity: 0; }
}

@keyframes landing-copy-away {
  0%, 20% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-70px);
  }
}

.pl-cinema__media {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  overflow: hidden;
  place-items: center;
  pointer-events: none;
}

.pl-cinema__screen {
  position: relative;
  width: 100vw;
  aspect-ratio: 1672 / 941;
  flex: none;
  overflow: visible;
  animation: landing-media-expand linear both;
  animation-range: cover 27.8% cover 72.2%;
  animation-timeline: --cinema;
  transform: translateY(38vh) scale(0.73);
  transform-origin: center center;
  will-change: transform;
}

@keyframes landing-media-expand {
  0%, 10% {
    transform: translateY(38vh) scale(0.73);
  }
  72%, 100% {
    transform: translateY(0) scale(1.82);
  }
}

.pl-cinema__photo {
  position: absolute;
  inset: 18.45% 5.3% 10.45%;
  overflow: hidden;
  border-radius: clamp(9px, 1vw, 17px);
  background: var(--landing-blue-strong);
  transform: translateZ(0);
}

.pl-cinema__video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  background: var(--landing-blue-strong);
  transform: scale(1.004);
}

@keyframes landing-photo-drift {
  to { transform: scale(1.12) translate3d(-1.5%, -1%, 0); }
}

.pl-cinema__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgb(11 31 47 / 16%), transparent 50%),
    linear-gradient(0deg, rgb(11 31 47 / 22%), transparent 46%);
  pointer-events: none;
}

.pl-cinema__frame {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  -webkit-mask:
    linear-gradient(#000 0 0) top / 100% 21% no-repeat,
    linear-gradient(#000 0 0) bottom / 100% 13% no-repeat,
    linear-gradient(#000 0 0) left / 7% 100% no-repeat,
    linear-gradient(#000 0 0) right / 7% 100% no-repeat;
  mask:
    linear-gradient(#000 0 0) top / 100% 21% no-repeat,
    linear-gradient(#000 0 0) bottom / 100% 13% no-repeat,
    linear-gradient(#000 0 0) left / 7% 100% no-repeat,
    linear-gradient(#000 0 0) right / 7% 100% no-repeat;
  animation: landing-frame-away linear both;
  animation-range: cover 35% cover 54%;
  animation-timeline: --cinema;
  pointer-events: none;
}

@keyframes landing-frame-away {
  0%, 25% { opacity: 1; }
  100% { opacity: 0; }
}

.pl-cinema__moments,
.pl-cinema__controls {
  position: absolute;
  z-index: 3;
  animation-timeline: --cinema;
  transform-origin: left bottom;
}

.pl-cinema__moments {
  inset: 0;
  width: auto;
  animation: none;
  opacity: 1;
  pointer-events: none;
  transform: none;
}

.pl-cinema__controls {
  animation: landing-media-ui-in linear both;
  animation-range: cover 49% cover 63%;
  animation-timeline: --cinema;
  opacity: 0;
  pointer-events: auto;
  transform: scale(0.55) translateY(30px);
}

@keyframes landing-media-ui-in {
  to {
    opacity: 1;
    transform: scale(0.55) translateY(0);
  }
}

.pl-media-card {
  display: block;
  position: absolute;
  width: auto;
  min-height: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--pl-text-primary);
  box-shadow: none;
  filter: blur(3px);
  opacity: 0;
  transform: translateY(-8px) scale(0.985);
  transition:
    filter 420ms ease,
    opacity 460ms var(--landing-ease),
    transform 520ms var(--landing-ease);
}

.pl-media-card.is-active {
  position: absolute;
  filter: blur(0);
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes pl-media-overlay-piece-in {
  from {
    opacity: 0;
    transform: translateY(-7px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.pl-media-card.is-active .pl-media-ui--generator,
.pl-media-card.is-active .pl-media-ui__insight,
.pl-media-card.is-active .pl-media-ui--progress {
  animation: pl-media-overlay-piece-in 520ms var(--landing-ease) 80ms both;
}

.pl-media-card.is-active .pl-media-ui__mini-card,
.pl-media-card.is-active .pl-media-ui--reinforcement .pl-media-ui__actions {
  animation: pl-media-overlay-piece-in 480ms var(--landing-ease) both;
}

.pl-media-card.is-active .pl-media-ui__mini-card:nth-child(1) { animation-delay: 70ms; }
.pl-media-card.is-active .pl-media-ui__mini-card:nth-child(2) { animation-delay: 150ms; }
.pl-media-card.is-active .pl-media-ui--reinforcement .pl-media-ui__actions { animation-delay: 150ms; }

.pl-media-card--biblioteca {
  top: 7%;
  left: 6%;
  width: 58%;
}

.pl-media-card--generador {
  top: 7%;
  left: 7%;
  width: 60%;
}

.pl-media-card--plan {
  top: 8%;
  right: 6%;
  width: 48%;
}

.pl-media-card--progreso {
  top: 7%;
  right: 5%;
  width: 62%;
}

.pl-media-ui {
  display: grid;
  padding: 0;
  gap: 10px;
}

.pl-media-ui--generator,
.pl-media-ui--progress,
.pl-media-ui__mini-card,
.pl-media-ui__insight {
  border: 1px solid rgb(255 255 255 / 72%);
  background: rgb(255 254 252 / 95%);
  box-shadow: 0 16px 38px rgb(5 23 36 / 22%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
}

.pl-media-ui--generator {
  padding: 15px;
  border-radius: var(--pl-radius-card);
}

.pl-media-ui__plan-pieces {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.pl-media-ui__mini-card,
.pl-media-ui__insight {
  display: grid;
  min-width: 0;
  padding: 12px;
  align-items: center;
  gap: 10px;
  border-radius: var(--pl-radius-control);
}

.pl-media-ui__mini-card { grid-template-columns: 36px minmax(0, 1fr); }

.pl-media-ui__mini-card > span:last-child,
.pl-media-ui__insight > span:last-child {
  display: grid;
  min-width: 0;
  gap: 1px;
}

.pl-media-ui__mini-card small,
.pl-media-ui__insight small {
  color: var(--pl-text-secondary);
  font-size: 0.7rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pl-media-ui__mini-card strong,
.pl-media-ui__insight strong {
  overflow: hidden;
  font-size: 0.88rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pl-media-ui__mini-card em,
.pl-media-ui__insight em {
  overflow: hidden;
  color: var(--pl-text-secondary);
  font-size: 0.7rem;
  font-style: normal;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pl-media-ui__insight {
  grid-template-columns: 40px minmax(0, 1fr);
}

.pl-media-ui--reinforcement .pl-media-ui__actions { padding-inline-end: 4px; }

.pl-media-ui--progress {
  padding: 14px;
  border-radius: var(--pl-radius-card);
}

.pl-media-ui .pl-action {
  cursor: default;
  pointer-events: none;
  white-space: nowrap;
}

.pl-media-ui__heading {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.pl-media-ui__heading > div {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.pl-media-ui__heading span,
.pl-media-ui__heading small,
.pl-media-ui__classroom small,
.pl-media-ui__reading small,
.pl-media-ui__metric-row small {
  color: var(--pl-text-secondary);
  font-size: 0.76rem;
  line-height: 1.3;
}

.pl-media-ui__heading strong,
.pl-media-ui__classroom strong,
.pl-media-ui__reading strong {
  overflow: hidden;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pl-media-ui__feature-icon,
.pl-media-ui__classroom-icon,
.pl-media-ui__reading-icon {
  display: grid;
  place-items: center;
  flex: none;
}

.pl-media-ui__feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--pl-radius-control);
  background: var(--pl-feature-action-subtle);
  color: var(--pl-feature-action-ink);
}

.pl-media-ui__feature-icon svg { width: 24px; height: 24px; }

.pl-media-ui__field {
  display: grid;
  gap: 6px;
}

.pl-media-ui__input,
.pl-media-ui__select {
  display: flex;
  min-width: 0;
  align-items: center;
  font-size: 0.88rem;
}

.pl-media-ui__input {
  gap: 9px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pl-media-ui__input span {
  overflow: hidden;
  text-overflow: ellipsis;
}

.pl-media-ui__input-thumb {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: calc(var(--pl-radius-control) - 5px);
  object-fit: cover;
}

.pl-media-ui__select {
  justify-content: space-between;
  gap: 12px;
}

.pl-media-ui__select svg { width: 18px; height: 18px; }

.pl-media-ui__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.pl-media-ui__actions--end { justify-content: flex-end; }
.pl-media-ui__actions--between { justify-content: space-between; }

.pl-media-ui__classroom,
.pl-media-ui__reading {
  display: grid;
  min-width: 0;
  padding: 12px 14px;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  border: 1px solid var(--pl-border-default);
  border-radius: var(--pl-radius-control);
  background: var(--pl-surface-default);
}

.pl-media-ui__classroom > span:nth-child(2),
.pl-media-ui__reading > span:nth-child(2) {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.pl-media-ui__classroom-icon,
.pl-media-ui__reading-icon {
  width: 38px;
  height: 38px;
  border-radius: calc(var(--pl-radius-control) - 3px);
  background: var(--pl-feature-action-subtle);
  color: var(--pl-feature-action-ink);
}

.pl-media-ui__classroom-icon svg,
.pl-media-ui__reading-icon svg { width: 22px; height: 22px; }

.pl-media-ui__check {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: var(--pl-feature-action-solid);
  color: #fff;
}

.pl-media-ui__check svg { width: 14px; height: 14px; }

.pl-media-ui__focuses {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pl-media-ui__focuses span {
  padding: 7px 11px;
  border: 1px solid var(--pl-border-default);
  border-radius: var(--pl-radius-control);
  background: var(--pl-surface-default);
  color: var(--pl-text-secondary);
  font-size: 0.78rem;
  font-weight: var(--pl-font-weight-semibold);
}

.pl-media-ui__focuses .is-selected {
  border-color: var(--pl-feature-action-ink);
  background: var(--pl-feature-action-subtle);
  color: var(--pl-feature-action-ink-strong);
}

.pl-media-ui__trend {
  padding: 6px 9px;
  border-radius: var(--pl-radius-control);
  background: var(--pl-color-green-100);
  color: var(--pl-color-green-800) !important;
  font-size: 0.78rem !important;
  font-weight: var(--pl-font-weight-bold);
}

.pl-media-ui__metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.pl-media-ui__metric-row > div {
  display: grid;
  padding: 11px 13px;
  gap: 3px;
  border-radius: var(--pl-radius-control);
  background: var(--pl-color-green-100);
}

.pl-media-ui__metric-row strong {
  color: var(--pl-color-green-800);
  font-size: 1.1rem;
}

.pl-media-ui__progress-bar {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 5px;
}

.pl-media-ui__progress-bar span {
  height: 9px;
  border-radius: 3px;
  background: var(--pl-color-neutral-200);
}

.pl-media-ui__progress-bar .is-complete { background: var(--pl-color-green-500); }

.pl-media-ui__signal {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--pl-text-secondary);
  font-size: 0.78rem;
}

.pl-media-ui__signal i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pl-color-green-500);
  box-shadow: 0 0 0 4px var(--pl-color-green-100);
}

.pl-cinema__controls {
  right: auto;
  bottom: 6.5%;
  left: 31%;
  display: flex;
  width: min(720px, 46vw);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  transform-origin: center bottom;
}

.pl-cinema__tabs {
  display: flex;
  padding: 6px;
  gap: 4px;
  border: 1px solid rgb(255 255 255 / 26%);
  border-radius: calc(var(--pl-radius-control) + 2px);
  background: rgb(15 38 55 / 66%);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.pl-cinema__tabs button,
.pl-cinema__pause {
  min-height: 40px;
  padding: 0 14px;
  border: 0;
  border-radius: calc(var(--pl-radius-control) - 2px);
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: var(--pl-font-weight-regular);
}

.pl-cinema__tabs button[aria-pressed="true"] {
  background: #fff;
  color: #16344e;
}

.pl-cinema__pause {
  border: 1px solid rgb(255 255 255 / 42%);
  background: rgb(15 38 55 / 68%);
}

/* Vertical scrolling moves a wide product track. This is the main chapter
   navigation borrowed from the reference, with product-owned content. */
.pl-product-journey {
  position: relative;
  height: 470dvh;
  min-height: 2800px;
  background: var(--landing-page);
  view-timeline-name: --products;
  view-timeline-axis: block;
}

.pl-product-journey__sticky {
  position: sticky;
  top: 0;
  display: flex;
  height: 100dvh;
  min-height: 640px;
  overflow: hidden;
  align-items: center;
}

.pl-product-track {
  display: flex;
  width: max-content;
  padding: 8vh 7vw;
  align-items: center;
  gap: 5vw;
  animation: landing-product-pan linear both;
  animation-range: cover 17.5% cover 82.5%;
  animation-timeline: --products;
  transform: translateX(0);
  will-change: transform;
}

@keyframes landing-product-pan {
  to { transform: translateX(calc(-100% + 100vw)); }
}

.pl-product-slide {
  flex: 0 0 auto;
}

.pl-product-intro {
  width: min(40vw, 560px);
  padding-right: 2vw;
}

.pl-product-intro h2 {
  max-width: 9ch;
  margin: 0;
  font-size: clamp(3.4rem, 6vw, 6.5rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.94;
}

.pl-product-intro p {
  max-width: 430px;
  margin: 28px 0 0;
  color: var(--landing-muted);
  font-size: 1.15rem;
}

.pl-product-card {
  display: grid;
  width: min(78vw, 1120px);
  height: min(72dvh, 720px);
  min-height: 540px;
  overflow: hidden;
  grid-template-columns: minmax(300px, 0.8fr) minmax(390px, 1.2fr);
  border: 1px solid var(--landing-line);
  border-radius: var(--landing-radius);
  background: var(--landing-surface);
  color: var(--landing-ink);
}

.pl-product-card__copy {
  display: flex;
  padding: clamp(38px, 5vw, 72px);
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.pl-product-card h3 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(2.3rem, 4vw, 4.3rem);
  font-weight: 500;
  letter-spacing: -0.048em;
  line-height: 0.98;
}

.pl-product-card p {
  max-width: 42ch;
}

.pl-product-card__summary {
  margin: 24px 0 0;
  color: var(--landing-muted);
  font-size: 1.08rem;
  font-weight: 400;
}

.pl-product-card__visual {
  position: relative;
  display: grid;
  margin: 18px 18px 18px 0;
  overflow: hidden;
  place-items: center;
  border-radius: calc(var(--landing-radius) - 8px);
  background: var(--landing-surface-soft);
}

.pl-product-card__visual img {
  width: min(82%, 520px);
  max-height: 86%;
  object-fit: contain;
}

.pl-product-card__media {
  display: contents;
}

.pl-product-card__visual--capture {
  overflow: visible;
  background: transparent;
}

.pl-product-card__visual--capture:not(.pl-product-card__visual--sequence) .pl-product-card__image--primary {
  width: 108%;
  max-width: none;
  max-height: 92%;
  border-radius: calc(var(--landing-radius) - 12px);
}

.pl-product-card__visual--sequence {
  display: block;
  overflow: visible;
  border-radius: 0;
  background: transparent;
}

.pl-product-card__visual--sequence img {
  position: absolute;
  height: auto;
  max-height: none;
  border-radius: calc(var(--landing-radius) - 12px);
  object-fit: contain;
  object-position: top left;
}

.pl-product-card__visual--sequence .pl-product-card__image--primary {
  top: 6%;
  left: 0;
  z-index: 1;
  width: 96%;
}

.pl-product-card__visual--sequence .pl-product-card__image--secondary {
  top: 44%;
  right: 0;
  z-index: 2;
  width: 66%;
}

.pl-product-card__visual--mixed-sequence .pl-product-card__image--primary {
  top: 8%;
  width: 92%;
}

.pl-product-card__visual--mixed-sequence .pl-product-card__image--secondary {
  top: 26%;
  width: 30%;
}

.pl-product-card__visual--capture.pl-product-card__visual--plan:not(.pl-product-card__visual--sequence) .pl-product-card__image--primary {
  width: 92%;
  max-width: 92%;
}

.pl-audience {
  padding: clamp(96px, 12vw, 170px) 24px;
  background: var(--landing-surface);
}

.pl-audience__inner {
  display: grid;
  width: min(100%, 1280px);
  margin-inline: auto;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.8fr);
  gap: clamp(54px, 8vw, 120px);
  align-items: center;
}

.pl-audience__photos {
  position: relative;
  min-height: 720px;
}

.pl-audience__photo {
  position: absolute;
  margin: 0;
  overflow: hidden;
  border-radius: var(--landing-radius);
  box-shadow: var(--landing-shadow);
}

.pl-audience__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pl-audience__photo--teacher {
  inset: 0 18% 15% 0;
}

.pl-audience__photo--students {
  right: 0;
  bottom: 0;
  width: 48%;
  height: 44%;
  border: 10px solid var(--landing-surface);
}

.pl-audience__copy h2,
.pl-faq__heading h2,
.pl-access-callout h2 {
  margin: 0;
  font-size: clamp(3rem, 5.4vw, 5.8rem);
  font-weight: 500;
  letter-spacing: -0.058em;
  line-height: 0.96;
}

.pl-audience__copy > p {
  max-width: 520px;
  margin: 26px 0 0;
  color: var(--landing-muted);
  font-size: 1.2rem;
}

.pl-audience__list {
  display: grid;
  margin: 44px 0 0;
  gap: 0;
}

.pl-audience__list > div {
  padding: 22px 0;
  border-bottom: 1px solid var(--landing-line);
}

.pl-audience__list > div:first-child {
  border-top: 1px solid var(--landing-line);
}

.pl-audience__list dt {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.08rem;
  font-weight: 700;
}

.pl-audience__item-icon {
  display: inline-grid;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  place-items: center;
  color: #9fcaf4;
}

.pl-audience__item-icon svg {
  width: 100%;
  height: 100%;
}

.pl-audience__list dd {
  max-width: 48ch;
  margin: 6px 0 0;
  color: var(--landing-muted);
}

.pl-student-note {
  display: grid;
  grid-column: 1 / -1;
  margin-top: 12px;
  min-height: 300px;
  padding: clamp(30px, 4vw, 52px) clamp(30px, 5vw, 72px);
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.42fr);
  align-items: center;
  gap: clamp(32px, 5vw, 80px);
  border-radius: var(--landing-radius);
  background: var(--landing-surface-soft);
}

.pl-student-note__copy {
  position: relative;
  z-index: 1;
}

.pl-student-note__visual {
  display: grid;
  min-height: 220px;
  margin: -24px 0;
  place-items: center;
}

.pl-student-note__visual img {
  width: min(100%, 320px);
  height: auto;
  filter: drop-shadow(0 24px 36px rgb(4 18 31 / 24%));
}

.pl-student-note h3 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 500;
  letter-spacing: -0.04em;
}

.pl-student-note p {
  max-width: 760px;
  margin: 10px 0 0;
  color: var(--landing-muted);
  font-size: 1.06rem;
}

.pl-faq {
  padding: clamp(96px, 12vw, 170px) 24px;
  background: var(--landing-page);
}

.pl-faq__inner {
  display: grid;
  width: min(100%, 1200px);
  margin-inline: auto;
  grid-template-columns: minmax(300px, 0.72fr) minmax(460px, 1fr);
  gap: clamp(64px, 10vw, 140px);
  align-items: start;
}

.pl-faq__heading {
  position: sticky;
  top: 126px;
}

.pl-faq__heading h2 {
  max-width: 8ch;
}

.pl-faq__heading p {
  max-width: 350px;
  margin: 24px 0 0;
  color: var(--landing-muted);
  font-size: 1.08rem;
}

.pl-faq__items details {
  border-bottom: 1px solid var(--landing-line);
}

.pl-faq__items details:first-child {
  border-top: 1px solid var(--landing-line);
}

.pl-faq__items summary {
  display: flex;
  min-height: 92px;
  padding: 24px 0;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 500;
  list-style: none;
}

.pl-faq__items summary::-webkit-details-marker {
  display: none;
}

.pl-faq__chevron {
  width: 24px;
  flex: 0 0 24px;
  color: var(--landing-blue);
  transition: transform 220ms var(--landing-ease);
}

.pl-faq details[open] .pl-faq__chevron {
  transform: rotate(180deg);
}

.pl-faq__items details > p {
  max-width: 62ch;
  margin: -4px 48px 30px 0;
  color: var(--landing-muted);
}

.pl-access-callout {
  padding: 24px;
  background: var(--landing-page);
}

.pl-access-callout__inner {
  position: relative;
  display: grid;
  width: min(100%, 1320px);
  min-height: 540px;
  margin-inline: auto;
  padding: clamp(48px, 8vw, 110px);
  place-items: start;
  align-content: center;
  border-radius: var(--landing-radius);
  background:
    radial-gradient(circle at 86% 26%, rgb(255 255 255 / 18%), transparent 25%),
    var(--landing-blue-strong);
  color: #fff;
  overflow: hidden;
}

.pl-access-callout__inner > :not(.pl-access-callout__character) {
  position: relative;
  z-index: 1;
}

.pl-access-callout h2 {
  max-width: 10ch;
  font-size: clamp(3.2rem, 6vw, 6.3rem);
}

.pl-access-callout p {
  max-width: 530px;
  margin: 26px 0 32px;
  color: rgb(255 255 255 / 76%);
  font-size: 1.18rem;
}

.pl-access-callout .pl-landing-button {
  gap: 12px;
  border-color: #fff;
  background: #fff;
  color: #16344e;
}

.pl-access-callout__button-icon {
  display: inline-flex;
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  transition: transform 240ms var(--landing-ease);
}

.pl-access-callout__button-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.pl-access-callout .pl-landing-button:hover {
  border-color: #e4eefa;
  background: #e4eefa;
}

.pl-access-callout .pl-landing-button:hover .pl-access-callout__button-icon {
  transform: translateX(4px);
}

.pl-access-callout__character {
  position: absolute;
  right: clamp(36px, 5vw, 76px);
  bottom: -48px;
  width: clamp(350px, 34vw, 500px);
  height: auto;
  max-height: 94%;
  object-fit: contain;
  object-position: center bottom;
  pointer-events: none;
  user-select: none;
}

.pl-landing-footer {
  padding: 92px 24px 36px;
  background: #16344e;
  color: #fff;
}

.pl-landing-footer__inner {
  display: grid;
  width: min(100%, 1280px);
  margin-inline: auto;
  grid-template-columns: 1fr auto;
  gap: 36px 70px;
  align-items: start;
}

.pl-landing-footer__brand {
  width: 180px;
}

.pl-landing-footer p {
  grid-column: 1;
  max-width: 360px;
  margin: 0;
  color: rgb(255 255 255 / 72%);
  font-size: 1.15rem;
}

.pl-landing-footer nav {
  display: grid;
  grid-row: 1 / span 2;
  grid-column: 2;
  grid-template-columns: repeat(2, minmax(130px, 1fr));
  gap: 16px 42px;
}

.pl-landing-footer nav a {
  color: rgb(255 255 255 / 82%);
  text-decoration: none;
}

.pl-landing-footer nav a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.pl-landing-footer small {
  grid-column: 1 / -1;
  padding-top: 34px;
  border-top: 1px solid rgb(255 255 255 / 16%);
  color: rgb(255 255 255 / 58%);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 700ms var(--landing-ease),
    transform 700ms var(--landing-ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-color-scheme: dark) {
  :root {
    --landing-page: #101d26;
    --landing-surface: #152630;
    --landing-surface-soft: #1c4064;
    --landing-ink: #f5f7f6;
    --landing-muted: #b8c9d2;
    --landing-line: #2f4d5f;
    --landing-blue: #8db7e8;
    --landing-blue-strong: #2a5283;
    --landing-blue-hover: #a7c9ef;
    --landing-blue-ink: #102332;
    --landing-nav: rgb(22 52 78 / 92%);
    --landing-shadow: 0 24px 70px rgb(3 11 17 / 34%);
  }

  .pl-cinema {
    background:
      radial-gradient(circle at 82% 18%, rgb(53 112 190 / 30%), transparent 31%),
      radial-gradient(circle at 12% 82%, rgb(42 82 131 / 42%), transparent 36%),
      #16344e;
  }

  .pl-cinema__prompt-sentence {
    color: #d4e1e8;
  }

  .pl-product-card {
    background: var(--landing-surface);
  }
}

@media (max-width: 1050px) {
  .pl-landing-menu {
    gap: 18px;
  }

  .pl-product-card {
    width: 84vw;
    grid-template-columns: 0.82fr 1.18fr;
  }

  .pl-audience__inner {
    gap: 52px;
  }

  .pl-audience__photos {
    min-height: 600px;
  }
}

@media (max-width: 980px) {
  .pl-landing-nav__inner {
    display: flex;
    width: calc(100% - 24px);
    padding: 8px 8px 8px 14px;
    justify-content: space-between;
  }

  .pl-landing-nav__toggle {
    display: inline-flex;
    min-height: 44px;
    padding: 0 14px;
  }

  .pl-landing-nav__access {
    display: none;
  }

  .pl-landing-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    display: grid;
    padding: 18px;
    gap: 4px;
    border: 1px solid var(--landing-line);
    border-radius: 14px;
    background: var(--landing-nav);
    box-shadow: 0 18px 44px rgb(8 24 38 / 28%);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px) scale(0.98);
    transition:
      opacity 180ms ease,
      transform 180ms var(--landing-ease);
  }

  .pl-landing-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .pl-landing-menu > a:not(.pl-landing-button) {
    padding: 13px 12px;
  }

  .pl-landing-menu > a::after {
    display: none;
  }

  .pl-landing-menu .pl-landing-button {
    margin-top: 8px;
  }

  .pl-landing-menu__access {
    display: inline-flex;
  }

  .pl-cinema__copy {
    top: 124px;
    left: 24px;
    width: calc(100% - 48px);
    grid-template-columns: 1fr;
    row-gap: 0;
  }

  .pl-cinema__copy h1 {
    max-width: 12ch;
    font-size: clamp(3.15rem, 8.5vw, 4.75rem);
    grid-column: 1;
    grid-row: 1;
  }

  .pl-cinema__prompt-sentence {
    margin-top: 24px;
    grid-column: 1;
    grid-row: 2;
  }

  .pl-cinema__prompt-arrow {
    display: none;
  }

  .pl-cinema__generator-preview {
    --landing-intro-rest-y: 0px;
    width: min(100%, 520px);
    margin-top: 12px;
    margin-bottom: 0;
    grid-column: 1;
    grid-row: 3;
    align-self: auto;
    transform: none;
  }

  .pl-cinema__screen {
    transform: translateY(clamp(300px, calc(33vw + 55px), 360px)) scale(0.84);
  }

  @keyframes landing-media-expand {
    0%, 10% { transform: translateY(clamp(300px, calc(33vw + 55px), 360px)) scale(0.84); }
    72%, 100% { transform: translateY(0) scale(2.35); }
  }

  .pl-product-intro {
    width: 65vw;
  }

  .pl-product-card {
    width: 88vw;
    height: 72dvh;
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(230px, 1fr);
  }

  .pl-product-card__copy {
    padding: 36px;
  }

  .pl-product-card h3 {
    margin-top: 0;
    font-size: clamp(2.1rem, 5vw, 3.2rem);
  }

  .pl-product-card__summary {
    margin-top: 14px;
  }

  .pl-product-card__visual {
    margin: 0 18px 18px;
  }

  .pl-audience__inner,
  .pl-faq__inner {
    grid-template-columns: 1fr;
  }

  .pl-audience__photos {
    min-height: 680px;
  }

  .pl-faq__heading {
    position: static;
  }

  .pl-faq__heading h2 {
    max-width: 11ch;
  }
}

@media (max-width: 720px) {
  .pl-cinema__prompt-kind {
    min-width: 0;
  }

  .pl-cinema__generator-preview {
    max-width: 500px;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 76px;
  }

  .pl-landing-nav__inner {
    min-height: 68px;
  }

  .pl-landing-brand {
    width: 154px;
  }

  .pl-cinema {
    height: 230dvh;
  }

  .pl-cinema__sticky {
    min-height: 560px;
  }

  .pl-cinema__copy {
    top: 104px;
    left: 20px;
    width: calc(100% - 40px);
  }

  .pl-cinema__copy h1 {
    max-width: 12ch;
    font-size: clamp(2.7rem, 12.4vw, 3.9rem);
    line-height: 0.94;
  }

  .pl-cinema__prompt-sentence {
    margin-top: 18px;
    font-size: 1rem;
  }

  .pl-cinema__generator-label {
    margin-bottom: 5px;
    font-size: 0.72rem;
  }

  .pl-cinema__generator-control {
    min-height: 52px;
    padding: 6px 11px;
  }

  .pl-cinema__generator-thumbnail {
    width: 36px;
    height: 36px;
  }

  .pl-cinema__generator-example {
    font-size: 0.84rem;
  }

  .pl-landing-button {
    min-height: 48px;
    padding-inline: 18px;
  }

  .pl-cinema__screen {
    transform: translateY(clamp(176px, 24vh, 220px)) scale(0.92);
  }

  @keyframes landing-media-expand {
    0%, 10% { transform: translateY(clamp(176px, 24vh, 220px)) scale(0.92); }
    72%, 100% { transform: translateY(0) scale(3.35); }
  }

  .pl-cinema__moments { transform: none; }

  .pl-cinema__controls { transform: scale(0.3) translateY(30px); }

  @keyframes landing-media-ui-in {
    to {
      opacity: 1;
      transform: scale(0.3) translateY(0);
    }
  }

  .pl-cinema__moments {
    inset: 0;
    width: auto;
  }

  .pl-media-ui {
    padding: 0;
    gap: 6px;
  }

  .pl-media-ui__heading { display: none; }

  .pl-media-ui--progress .pl-media-ui__heading {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr) auto;
    gap: 7px;
  }

  .pl-media-card--biblioteca {
    top: 5%;
    left: 4%;
    width: 76%;
  }

  .pl-media-card--generador {
    top: 5%;
    left: 4%;
    width: 92%;
  }

  .pl-media-card--plan {
    top: 6%;
    right: 4%;
    width: 74%;
  }

  .pl-media-card--progreso {
    top: 5%;
    right: 4%;
    width: 90%;
  }

  .pl-media-ui--generator,
  .pl-media-ui--progress { padding: 8px; }

  .pl-media-ui__plan-pieces { gap: 6px; }

  .pl-media-ui__mini-card,
  .pl-media-ui__insight {
    padding: 7px;
    gap: 6px;
  }

  .pl-media-ui__mini-card { grid-template-columns: 27px minmax(0, 1fr); }

  .pl-media-ui__insight { grid-template-columns: 30px minmax(0, 1fr); }

  .pl-media-ui__mini-card small,
  .pl-media-ui__insight small { font-size: 0.53rem; }

  .pl-media-ui__mini-card strong,
  .pl-media-ui__insight strong { font-size: 0.67rem; }

  .pl-media-ui__mini-card em,
  .pl-media-ui__insight em { font-size: 0.54rem; }

  .pl-media-ui__feature-icon {
    width: 30px;
    height: 30px;
  }

  .pl-media-ui__feature-icon svg { width: 17px; height: 17px; }

  .pl-media-ui__heading strong,
  .pl-media-ui__classroom strong,
  .pl-media-ui__reading strong { font-size: 0.86rem; }

  .pl-media-ui__heading span,
  .pl-media-ui__classroom small,
  .pl-media-ui__reading small,
  .pl-media-ui__metric-row small { font-size: 0.68rem; }

  .pl-media-ui__input,
  .pl-media-ui__select {
    min-height: 34px;
    height: 34px;
    padding: 0 9px;
    font-size: 0.72rem;
  }

  .pl-media-ui__input-thumb {
    width: 24px;
    height: 24px;
  }

  .pl-media-ui .pl-field__label { font-size: 0.66rem; }

  .pl-media-ui .pl-action--sm,
  .pl-media-ui .pl-action--md {
    min-height: 32px;
    padding: 4px 10px;
    font-size: 0.7rem;
  }

  .pl-media-ui .pl-action__icon { width: 15px; height: 15px; }

  .pl-media-ui__actions .pl-action--secondary { display: none; }

  .pl-media-ui__classroom,
  .pl-media-ui__reading {
    padding: 7px 9px;
    grid-template-columns: 32px minmax(0, 1fr) auto;
    gap: 8px;
  }

  .pl-media-ui__classroom-icon,
  .pl-media-ui__reading-icon {
    width: 27px;
    height: 27px;
  }

  .pl-media-ui__focuses { display: none; }

  .pl-media-ui__metric-row { gap: 6px; }

  .pl-media-ui__metric-row > div { padding: 6px 8px; }

  .pl-media-ui__metric-row strong { font-size: 0.67rem; }

  .pl-media-ui__signal { display: none; }

  .pl-media-ui__progress-bar { gap: 3px; }

  .pl-media-ui__progress-bar span { height: 6px; }

  .pl-media-card {
    min-height: 0;
    padding: 0;
  }

  .pl-cinema__controls {
    right: auto;
    bottom: 6.5%;
    left: 35%;
    width: 76vw;
    align-items: flex-end;
  }

  .pl-cinema__tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-radius: 18px;
  }

  .pl-product-journey {
    height: 430dvh;
  }

  .pl-product-track {
    padding-inline: 20px;
    gap: 20px;
  }

  .pl-product-intro {
    width: 84vw;
  }

  .pl-product-intro h2 {
    max-width: 9ch;
    font-size: clamp(3.25rem, 14vw, 5rem);
  }

  .pl-product-card {
    width: calc(100vw - 40px);
    height: min(74dvh, 650px);
    min-height: 520px;
  }

  .pl-product-card__copy {
    padding: 28px;
  }

  .pl-product-card__visual:not(.pl-product-card__visual--sequence) .pl-product-card__image--primary {
    width: min(76%, 390px);
  }

  .pl-product-card__visual--capture {
    overflow: hidden;
  }

  .pl-product-card__visual--capture:not(.pl-product-card__visual--sequence) .pl-product-card__image--primary {
    width: 164%;
    max-width: none;
    max-height: none;
    transform: translateX(2%);
  }

  .pl-product-card__visual--capture.pl-product-card__visual--plan:not(.pl-product-card__visual--sequence) .pl-product-card__image--primary {
    top: 8%;
    width: 58%;
    max-width: none;
    transform: none;
  }

  .pl-product-card__visual--plan .pl-product-card__image--secondary {
    display: none;
  }

  .pl-product-card__visual--sequence {
    margin-right: 12px;
    margin-left: 12px;
  }

  .pl-product-card__visual--sequence .pl-product-card__image--primary {
    top: 3%;
    width: 100%;
  }

  .pl-product-card__visual--sequence .pl-product-card__image--secondary {
    top: 42%;
    width: 70%;
  }

  .pl-product-card__visual--mobile-sequence .pl-product-card__image--primary {
    top: 10%;
    left: 0;
    width: 60%;
  }

  .pl-product-card__visual--mobile-sequence .pl-product-card__image--secondary {
    top: 38%;
    right: 0;
    width: 38%;
  }

  .pl-product-card__visual--progreso .pl-product-card__image--primary,
  .pl-product-card__visual--progreso .pl-product-card__image--secondary {
    top: 12%;
    width: 43%;
  }

  .pl-product-card__visual--progreso .pl-product-card__image--primary {
    left: 4%;
  }

  .pl-product-card__visual--progreso .pl-product-card__image--secondary {
    right: 4%;
  }

  .pl-audience,
  .pl-faq {
    padding: 92px 20px;
  }

  .pl-audience__photos {
    min-height: 480px;
  }

  .pl-audience__photo--teacher {
    inset: 0 10% 12% 0;
  }

  .pl-audience__photo--students {
    width: 52%;
    height: 42%;
    border-width: 7px;
  }

  .pl-audience__copy h2,
  .pl-faq__heading h2 {
    font-size: clamp(3rem, 13vw, 4.6rem);
  }

  .pl-student-note {
    padding: 28px;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .pl-student-note__visual {
    min-height: 180px;
    margin: 0;
  }

  .pl-student-note__visual img {
    width: min(68vw, 240px);
  }

  .pl-faq__inner {
    gap: 54px;
  }

  .pl-access-callout {
    padding: 12px;
  }

  .pl-access-callout__inner {
    min-height: auto;
    padding: 44px 28px 0;
  }

  .pl-access-callout h2 {
    font-size: clamp(3.1rem, 13vw, 4.8rem);
  }

  .pl-access-callout__character {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(82vw, 310px);
    max-height: none;
    margin: 28px auto 0;
    justify-self: center;
    transform: translateY(18px);
  }

  .pl-landing-footer {
    padding-top: 72px;
  }

  .pl-landing-footer__inner {
    grid-template-columns: 1fr;
  }

  .pl-landing-footer nav {
    grid-row: auto;
    grid-column: 1;
  }
}

@media (max-width: 980px) and (max-height: 620px) and (orientation: landscape) {
  .pl-cinema__copy {
    top: 88px;
  }

  .pl-cinema__copy h1 {
    max-width: 15ch;
    font-size: clamp(2.75rem, 7vw, 3.8rem);
  }

  .pl-cinema__prompt-sentence {
    margin-top: 12px;
  }

  .pl-cinema__generator-preview {
    max-width: 430px;
    margin-top: 8px;
  }

  .pl-cinema__generator-control {
    min-height: 48px;
  }

  .pl-cinema__screen {
    transform: translateY(52vh) scale(0.72);
  }

  @keyframes landing-media-expand {
    0%, 10% { transform: translateY(52vh) scale(0.72); }
    72%, 100% { transform: translateY(0) scale(2.7); }
  }
}

/* Browsers without scroll timelines receive complete static chapters. */
.no-scroll-timeline .pl-cinema {
  height: auto;
  min-height: 0;
  padding: 120px 24px 80px;
}

.no-scroll-timeline .pl-cinema__sticky {
  position: relative;
  display: grid;
  height: auto;
  min-height: 0;
  gap: 52px;
  overflow: visible;
}

.no-scroll-timeline .pl-cinema__copy,
.no-scroll-timeline .pl-cinema__media,
.no-scroll-timeline .pl-cinema__screen,
.no-scroll-timeline .pl-cinema__moments,
.no-scroll-timeline .pl-cinema__controls {
  position: relative;
  inset: auto;
  animation: none;
  opacity: 1;
  transform: none;
}

.no-scroll-timeline .pl-cinema__copy {
  width: min(100%, 720px);
}

.no-scroll-timeline .pl-cinema__media {
  overflow: visible;
}

.no-scroll-timeline .pl-cinema__screen {
  width: min(100%, 1160px);
  margin-inline: auto;
}

.no-scroll-timeline .pl-cinema__moments {
  position: absolute;
  right: auto;
  bottom: 14%;
  left: 10%;
  width: min(440px, 54%);
}

.no-scroll-timeline .pl-cinema__controls {
  position: absolute;
  right: 8%;
  bottom: 5%;
  left: 8%;
}

.no-scroll-timeline .pl-product-journey {
  height: auto;
  min-height: 0;
  padding: 90px 0;
}

.no-scroll-timeline .pl-product-journey__sticky {
  position: relative;
  height: auto;
  min-height: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}

.no-scroll-timeline .pl-product-track {
  animation: none;
  transform: none;
}

.no-scroll-timeline .pl-product-slide {
  scroll-snap-align: center;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .pl-landing-progress {
    display: none;
  }

  .pl-cinema__typing-cursor {
    display: none;
  }

  .pl-landing-menu > a:not(.pl-landing-button),
  .pl-landing-nav__toggle,
  .pl-landing-nav__access,
  .pl-cinema__copy h1,
  .pl-cinema__prompt-sentence,
  .pl-cinema__prompt-arrow,
  .pl-cinema__generator-preview {
    opacity: 1;
    animation: none;
  }

  .pl-cinema {
    height: auto;
    min-height: 0;
    padding: 120px 24px 80px;
  }

  .pl-cinema__sticky {
    position: relative;
    display: grid;
    height: auto;
    min-height: 0;
    gap: 52px;
    overflow: visible;
  }

  .pl-cinema__copy,
  .pl-cinema__media,
  .pl-cinema__screen,
  .pl-cinema__moments,
  .pl-cinema__controls {
    position: relative;
    inset: auto;
    opacity: 1;
    transform: none;
  }

  .pl-cinema__copy {
    width: min(100%, 720px);
  }

  .pl-cinema__screen {
    width: min(100%, 1160px);
    margin-inline: auto;
  }

  .pl-cinema__moments {
    position: absolute;
    bottom: 14%;
    left: 10%;
    width: min(440px, 54%);
  }

  .pl-cinema__controls {
    display: none;
  }

  .pl-product-journey {
    height: auto;
    min-height: 0;
    padding: 90px 0;
  }

  .pl-product-journey__sticky {
    position: relative;
    height: auto;
    min-height: 0;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .pl-product-track {
    transform: none;
  }

  .pl-product-slide {
    scroll-snap-align: center;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .pl-landing-nav__inner,
  .pl-landing-brand,
  .pl-landing-menu,
  .pl-landing-nav__toggle,
  .pl-media-card,
  .pl-cinema__tabs,
  .pl-cinema__pause {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .pl-landing-nav.is-returning .pl-landing-nav__inner {
    background: #16344e;
  }

  .pl-media-card {
    background: #fffefc;
  }
}