@font-face {
  font-family: EduArabic;
  src: url(assets/arabic.ttf) format("truetype");
  font-display: swap;
  font-weight: 100 900;
}
@font-face {
  font-family: EduLatin;
  src: url(assets/latin.ttf) format("truetype");
  font-display: swap;
  font-weight: 100 900;
}
:root {
  --cream: #fff9ed;
  --paper: #fffdf7;
  --ink: #183e47;
  --teal: #087f89;
  --teal-dark: #07545f;
  --gold: #f4c448;
  --coral: #e7795f;
  --line: #ded4bd;
  --muted: #647677;
  --shadow: 0 16px 45px #514b3220;
  --radius: 24px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  font-family: EduArabic, EduLatin, sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  background-image: url(assets/paper.webp);
  background-size: 600px;
  background-blend-mode: multiply;
}
button,
input {
  font: inherit;
}
button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button:disabled {
  cursor: default;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid #df861d;
  outline-offset: 5px;
}
img {
  max-width: 100%;
  display: block;
}
svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  font-weight: 800;
  line-height: 1.55;
  text-wrap: balance;
}
h1 {
  font-size: clamp(34px, 4.1vw, 68px);
  letter-spacing: -1.5px;
}
h2 {
  font-size: clamp(28px, 2.8vw, 42px);
  letter-spacing: -0.7px;
}
h3 {
  font-size: 22px;
}
p {
  line-height: 1.95;
}
button {
  border: 0;
  color: inherit;
  background: none;
}
[hidden] {
  display: none !important;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}
.skip {
  position: fixed;
  z-index: 100;
  top: -100px;
  right: 20px;
  padding: 12px;
  background: var(--gold);
}
.skip:focus {
  top: 12px;
}
.section {
  width: min(1240px, calc(100% - 80px));
  margin-inline: auto;
}
.eyebrow {
  display: block;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}
.eyebrow > span {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  margin-inline-end: 8px;
}
.overline {
  font-size: 12px;
  font-weight: 800;
  color: var(--teal);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #fffaf0f2;
  border-bottom: 1px solid #d8d0be80;
  backdrop-filter: blur(14px);
}
.nav-inner {
  width: min(1390px, calc(100% - 64px));
  height: 76px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.brand {
  display: inline-flex;
  align-items: center;
  direction: ltr;
  gap: 1px;
  white-space: nowrap;
  font:
    900 27px/1.1 EduLatin,
    sans-serif;
  color: var(--teal-dark);
}
.brand strong {
  font-weight: 950;
}
.brand > img {
  align-self: flex-start;
  margin-top: -12px;
  width: 29px;
  height: 29px;
}
.site-header nav {
  display: flex;
  gap: 38px;
  font-size: 14px;
  font-weight: 700;
}
.site-header nav a {
  position: relative;
  padding: 14px 0;
}
.site-header nav a:after {
  content: "";
  position: absolute;
  bottom: 5px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: var(--teal);
  transition: all 0.2s;
}
.site-header nav a:hover:after {
  left: 0;
  right: 0;
}
.nav-spark {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  vertical-align: top;
}
.nav-explore {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 13px;
  font-weight: 800;
  border: 1px solid #c6b999;
  padding: 9px 18px;
  border-radius: 10px;
  box-shadow: 0 3px 0 #e5ddcb;
}
.button {
  min-height: 48px;
  padding: 10px 23px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 15px;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  background: var(--teal);
  color: white;
  border: 1px solid #056772;
  box-shadow: 0 4px 0 #05525b;
}
.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #05525b;
}
.button:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #05525b;
}
.button.secondary {
  background: var(--paper);
  color: var(--ink);
  border-color: #cfc3a6;
  box-shadow: 0 4px 0 #ddd1b8;
}
.button.secondary:hover {
  box-shadow: 0 6px 0 #ddd1b8;
}
.text-button {
  padding: 12px 9px;
  font-weight: 750;
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 5px;
}
.icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #ede4d3;
  color: var(--ink);
}
.home-hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
}
.home-scene {
  width: 100%;
  height: 100%;
  position: absolute !important;
  inset: 0;
  border-radius: 0 !important;
  aspect-ratio: auto !important;
}
.home-scene .scene-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 35% 50%;
}
.home-scene .scene-wash {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    270deg,
    #fff9edf0 0%,
    #fff9edd9 28%,
    #fff9ed00 57%
  );
  pointer-events: none;
}
.hero-copy {
  position: relative;
  width: 43%;
  padding: 95px 0 105px;
  margin-right: 8%;
  pointer-events: none;
}
.hero-copy a {
  pointer-events: auto;
}
.hero-copy h1 {
  font-size: clamp(52px, 5.3vw, 82px);
  line-height: 1.38;
  color: var(--teal-dark);
}
.hand-underline {
  display: block;
  position: relative;
  width: max-content;
}
.hand-underline:after {
  content: "";
  position: absolute;
  height: 7px;
  background: var(--gold);
  bottom: -1px;
  right: 0;
  width: 96%;
  border-radius: 40%;
  transform: rotate(-2deg);
  z-index: 0;
}
.heading-rays {
  position: absolute;
  width: 68px;
  left: -85px;
  top: 18px;
  transform: rotate(-14deg);
}
.hero-copy p {
  font-size: 19px;
  margin: 24px 0 28px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 21px;
  font-size: 12px;
  color: #536766;
}
.paper-edge {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 35px;
  background: var(--cream);
  clip-path: polygon(
    0 44%,
    8% 72%,
    16% 25%,
    24% 60%,
    31% 34%,
    39% 79%,
    49% 20%,
    58% 65%,
    67% 34%,
    76% 75%,
    85% 25%,
    92% 55%,
    100% 20%,
    100% 100%,
    0 100%
  );
}
.scene {
  position: relative;
  isolation: isolate;
  border-radius: 24px;
  aspect-ratio: 16/9;
}
.scene-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.hotspot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  z-index: 3;
}
.spot-core {
  width: 32px;
  height: 32px;
  border: 2px solid white;
  border-radius: 50%;
  background: var(--gold);
  color: #61400d;
  font:
    800 24px/1 EduLatin,
    sans-serif;
  display: grid;
  place-items: center;
  box-shadow:
    0 0 0 8px #f7cd5450,
    0 0 28px #ffedb0;
  transition: transform 0.3s;
}
.hotspot:before,
.tiny-pulse:before {
  content: "";
  position: absolute;
  border: 1px solid #ffef9f;
  border-radius: 50%;
  inset: 0;
  animation: hotspot-halo 2.8s ease-out infinite;
  animation-delay: var(--delay, 0s);
  pointer-events: none;
}
.hotspot:hover .spot-core,
.hotspot[aria-expanded="true"] .spot-core {
  transform: scale(1.16) rotate(90deg);
  background: #fff1b4;
}
.spot-label {
  position: absolute;
  top: 49px;
  white-space: nowrap;
  background: #fff9edf5;
  border: 1px solid #d9c899;
  box-shadow: 0 4px 18px #0002;
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 800;
  opacity: 0;
  transform: translateY(-5px);
  transition:
    opacity 0.2s,
    transform 0.2s;
  pointer-events: none;
}
.hotspot:hover .spot-label,
.hotspot:focus-visible .spot-label {
  opacity: 1;
  transform: none;
}
.scene-hint {
  position: absolute;
  bottom: 18px;
  left: 24px;
  background: #fff9edea;
  border: 1px solid #e0cb96;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.tiny-pulse {
  position: relative;
  display: inline-block;
  background: var(--teal);
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.tiny-pulse:before {
  inset: -5px;
  border-color: var(--teal);
}
.home-scene .scene-hint {
  bottom: 54px;
}
.home-scene .inspector {
  z-index: 12;
}
.inspector {
  position: absolute;
  z-index: 10;
  width: 330px;
  max-width: calc(100% - 24px);
  right: 20px;
  top: 24px;
  padding: 22px;
  border-radius: 22px;
  background: var(--cream);
  border: 1px solid #c9b584;
  box-shadow: 0 18px 50px #172c4840;
  transform-origin: var(--origin-x, 50%) var(--origin-y, 50%);
}
.inspector-close {
  position: absolute;
  left: 10px;
  top: 10px;
  z-index: 2;
  width: 32px;
  height: 32px;
}
.inspector-art {
  height: 115px;
  margin: -8px 0 5px;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  place-items: center;
}
.inspector-art img {
  height: 100%;
  min-height: 0;
  max-height: 100%;
  max-width: 160px;
  object-fit: contain;
  filter: drop-shadow(0 12px 10px #0002);
}
.inspector-crop {
  height: 135px;
  border-radius: 14px;
  background-size: 400%;
  background-repeat: no-repeat;
  margin-bottom: 13px;
}
.inspector .eyebrow {
  font-size: 10px;
  margin-bottom: 4px;
}
.inspector h3 {
  font-size: 21px;
}
.inspector p {
  font-size: 13px;
  line-height: 1.85;
  margin: 8px 0;
}
.inspector .fact {
  font-size: 12px;
  color: var(--teal);
  padding-top: 10px;
  border-top: 1px dashed #bfb596;
}
.inspector-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 15px;
}
.inspector-links a {
  font-size: 11px;
  padding: 7px 10px;
  background: var(--teal);
  color: #fff;
  border-radius: 8px;
}
.flying-chips {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin: 10px 0;
}
.flying-chips span {
  background: #f7df8e;
  color: #715619;
  border: 1px solid #dac373;
  border-radius: 20px;
  font-size: 10px;
  padding: 3px 9px;
}
.scene-inspecting .hotspot:not([aria-expanded="true"]) {
  opacity: 0.5;
}
.catalog {
  padding: 78px 0 44px;
  scroll-margin-top: 95px;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}
.section-heading p,
.section-heading > span {
  font-size: 14px;
  color: var(--muted);
}
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.grade-tabs {
  display: flex;
  padding: 6px;
  background: #eee4d0;
  border: 1px solid #ded0b5;
  border-radius: 14px;
  gap: 4px;
  overflow: auto;
}
.grade-tabs button {
  padding: 8px 14px;
  border-radius: 9px;
  white-space: nowrap;
  font-size: 13px;
  min-height: 40px;
  font-weight: 700;
}
.grade-tabs button[aria-pressed="true"] {
  background: var(--paper);
  color: var(--teal-dark);
  box-shadow: 0 3px 8px #46361517;
}
.search {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: center;
  border-bottom: 1px solid #baad92;
  padding: 7px 0;
  max-width: 230px;
}
.search input {
  border: 0;
  background: none;
  min-width: 0;
  width: 100%;
  font-size: 13px;
  color: var(--ink);
  outline: none;
}
.search svg {
  width: 18px;
}
.subject-tabs {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 22px 0 26px;
}
.subject-tabs button {
  font-size: 12px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  min-height: 34px;
  color: var(--muted);
}
.subject-tabs button[aria-pressed="true"] {
  border-color: var(--teal);
  color: var(--teal);
  font-weight: 800;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 25px;
}
.course-card {
  --card-color: #e2eee5;
  background: var(--paper);
  border: 1px solid #d8cdb5;
  border-radius: 18px;
  box-shadow: 0 5px 0 #e6dbc4;
  transition:
    transform 0.3s,
    box-shadow 0.3s;
  overflow: hidden;
}
.course-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 12px 24px #775f2918;
}
.gold {
  --card-color: #f4e3ae;
}
.coral {
  --card-color: #f8d7c3;
}
.lavender {
  --card-color: #e7def4;
}
.green {
  --card-color: #dbead3;
}
.teal {
  --card-color: #d2e8e3;
}
.course-art {
  height: 180px;
  position: relative;
  display: grid;
  place-items: center;
  background: var(--card-color);
  overflow: hidden;
}
.course-art:before {
  content: "";
  width: 165px;
  height: 165px;
  border: 1px dashed #fff9;
  position: absolute;
  border-radius: 50%;
  transform: rotate(-15deg);
}
.course-art img {
  height: 130px;
  width: 160px;
  object-fit: contain;
  filter: drop-shadow(0 13px 12px #6c623020);
  transition: transform 0.45s var(--ease);
  position: relative;
}
.course-card:hover .course-art img {
  transform: translateY(-5px) rotate(-5deg) scale(1.06);
}
.course-art.scene-art::before { display: none; }
.course-art.scene-art img { width: 100%; height: 100%; object-fit: cover; filter: none; }
.course-card:hover .course-art.scene-art img { transform: scale(1.035); }
.grade-label {
  position: absolute;
  top: 13px;
  right: 13px;
  background: #fffaf0d9;
  border: 1px solid #fff8;
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 10px;
  font-weight: 700;
}
.card-arrow {
  position: absolute;
  bottom: 11px;
  left: 13px;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  background: var(--teal);
  color: white;
  display: grid;
  place-items: center;
}
.card-arrow svg {
  width: 16px;
}
.course-copy {
  padding: 19px;
}
.course-copy h3 {
  font-size: 19px;
  margin: 4px 0;
}
.course-copy > p {
  font-size: 12px;
  color: var(--muted);
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px dashed #d6cbb3;
  font-size: 10px;
  color: #5b706b;
}
.card-meta span:last-child {
  color: var(--teal);
  font-weight: 750;
}
.empty-catalog {
  text-align: center;
  padding: 55px;
  background: #eee7d5;
  border-radius: 18px;
}
.empty-catalog p {
  margin: 10px 0 20px;
}
.lab-invite {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 70px;
  align-items: center;
  padding: 80px 0;
  direction: ltr;
}
.lab-invite > div {
  direction: rtl;
}
.lab-invite p {
  color: var(--muted);
  margin: 20px 0 26px;
  font-size: 15px;
}
.lab-invite h2 span {
  color: var(--teal);
}
.lab-preview {
  position: relative;
  transform: rotate(-2deg);
  padding: 12px;
  background: var(--paper);
  border: 1px solid #d4c2a0;
  box-shadow: var(--shadow);
  border-radius: 18px;
}
.lab-preview > img {
  border-radius: 10px;
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.lab-preview-button {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 18px;
  background: #fff8e8f5;
  border: 1px solid #ddc984;
  border-radius: 10px;
  padding: 10px 20px;
  font-weight: 800;
  font-size: 13px;
}
.lab-preview-button .spot-core {
  width: 28px;
  height: 28px;
  font-size: 20px;
}
.how {
  padding: 35px 0 100px;
  text-align: center;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 60px;
  margin-top: 44px;
}
.how-grid article {
  position: relative;
  padding: 20px;
}
.how-grid img {
  height: 100px;
  margin: 0 auto 20px;
  filter: drop-shadow(0 7px 5px #0001);
}
.how-grid h3 {
  font-size: 21px;
}
.how-grid p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 12px;
}
.step-number {
  position: absolute;
  top: 24px;
  right: 32px;
  font: 800 16px EduLatin;
  color: #bdad84;
}
.crumb {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 24px;
  font-size: 12px;
  color: var(--muted);
}
.crumb svg {
  width: 15px;
  height: 15px;
}
.crumb a {
  color: var(--teal);
  font-weight: 750;
}
.course-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 65px;
  padding: 50px 0 66px;
}
.course-hero h1 {
  font-size: clamp(32px, 3.7vw, 55px);
}
.course-subtitle {
  font-size: 22px;
  color: var(--teal);
  font-weight: 700;
  margin-top: 12px;
}
.course-hero p:not(.course-subtitle) {
  font-size: 14px;
  color: var(--muted);
  margin-top: 16px;
}
.course-hero .hero-actions {
  margin-top: 24px;
}
.course-hero .edition {
  font-size: 11px !important;
  margin-top: 22px !important;
}
.course-hero-art {
  position: relative;
  background: var(--card-color);
  border-radius: 45% 45% 14% 14%;
  min-height: 350px;
  display: grid;
  place-items: center;
}
.course-hero-art > img:not(.feature-cutout) {
  border-radius: 45% 45% 14% 14%;
  width: 100%;
  height: 400px;
  object-fit: cover;
  object-position: 20% 50%;
}
.course-hero-art .feature-cutout {
  height: 240px;
  width: 300px;
  object-fit: contain;
  filter: drop-shadow(0 22px 15px #0002);
  animation: gentle-enter 0.8s both;
}
.art-callout {
  position: absolute;
  bottom: -12px;
  right: -25px;
  display: flex;
  gap: 14px;
  align-items: center;
  background: var(--paper);
  border: 1px solid #cfbf98;
  padding: 12px 20px;
  border-radius: 15px;
  box-shadow: var(--shadow);
  transform: rotate(3deg);
  font-size: 13px;
  font-weight: 800;
}
.art-callout img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}
.art-callout span {
  display: flex;
  align-items: center;
  gap: 16px;
}
.art-orbit {
  position: absolute;
  border: 1px dashed #d2b763;
  pointer-events: none;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  z-index: -1;
}
.orbit-one {
  left: -24px;
  top: 40px;
}
.orbit-two {
  right: -18px;
  bottom: 40px;
  width: 35px;
  height: 35px;
}
.lessons-section {
  padding: 30px 0 60px;
}
.lesson-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.lesson-card {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 20px;
  background: #fffdf8;
  border: 1px solid #dbceb6;
  border-radius: 15px;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.lesson-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px #42301112;
}
.lesson-number {
  font: 800 20px EduLatin;
  color: #b09b72;
}
.lesson-thumb {
  flex-shrink: 0;
  width: 62px;
  height: 62px;
  background: #f0ebdd;
  border-radius: 12px;
  display: grid;
  place-items: center;
}
.lesson-thumb img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}
.lesson-card h3 {
  font-size: 16px;
}
.lesson-card p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 4px;
}
.lesson-arrow {
  margin-inline-start: auto;
  color: var(--teal);
}
.lesson-arrow svg {
  width: 19px;
}
.recording-invite {
  display: flex;
  align-items: center;
  gap: 65px;
  padding: 40px 50px;
  margin-bottom: 85px;
  background: #dbece5;
  border: 1px dashed #b5c6b6;
  border-radius: 25px;
}
.recording-invite > img {
  width: 240px;
  height: 230px;
  object-fit: contain;
}
.recording-invite h2 {
  font-size: 30px;
}
.recording-invite p {
  font-size: 14px;
  margin: 12px 0 22px;
}
.lesson-page {
  max-width: 1040px;
  padding: 35px 0 85px;
}
.lesson-heading {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 35px;
}
.lesson-heading h1 {
  font-size: clamp(32px, 4vw, 50px);
}
.lesson-heading > p {
  font-size: 16px;
  color: var(--muted);
  margin-top: 14px;
}
.learn-panel {
  display: grid;
  grid-template-columns: 0.85fr 1.2fr;
  gap: 45px;
  align-items: center;
  padding: 30px;
  background: #fffcf5;
  border: 1px solid #decfac;
  border-radius: 24px;
}
.learn-art {
  background: var(--card-color, #e5ecdc);
  border-radius: 23px;
  min-height: 275px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.learn-art > img {
  width: 85%;
  height: 250px;
  object-fit: contain;
  filter: drop-shadow(0 15px 10px #0002);
}
.art-doodle {
  position: absolute;
  font-size: 44px;
  color: #dca52b;
  left: 22px;
  top: 8px;
}
.learn-point {
  padding: 15px 0;
  border-bottom: 1px dashed #d4c5a8;
}
.learn-point:last-child {
  border: 0;
}
.reveal-point {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 800;
  color: var(--teal);
  padding: 3px;
}
.reveal-point > span {
  width: 29px;
  height: 29px;
  border-radius: 50%;
  background: #f4df98;
  color: #826015;
  display: grid;
  place-items: center;
  font-family: EduLatin;
}
.learn-point p {
  font-size: 14px;
  padding: 12px 41px 0 0;
  color: #516360;
}
.quiz {
  margin: 50px auto 0;
  background: var(--teal-dark);
  color: var(--cream);
  padding: 38px;
  border-radius: 24px;
  box-shadow: 0 8px 0 #e1c475;
}
.quiz .eyebrow {
  color: var(--gold);
}
.quiz h2 {
  font-size: 25px;
}
.quiz-intro > p {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 10px;
}
.quiz-options {
  display: grid;
  gap: 12px;
  margin: 25px 0;
}
.quiz-options button {
  display: flex;
  gap: 15px;
  align-items: center;
  padding: 16px 18px;
  background: #fffaf3;
  color: var(--ink);
  border: 2px solid transparent;
  border-radius: 12px;
  text-align: start;
  font-size: 15px;
  transition:
    background 0.2s,
    border-color 0.2s;
}
.quiz-options button > span {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: #e9e4d8;
  border-radius: 6px;
  font-size: 13px;
}
.quiz-options button[aria-pressed="true"] {
  border-color: #58bafa;
  background: #e2f3ff;
}
.quiz-options button.is-correct {
  border-color: #70cb8f;
  background: #e7f7e9;
  color: #176b34;
}
.quiz-options button.is-wrong {
  border-color: #ed8c81;
  background: #fff0ec;
  color: #a4382e;
}
.quiz-feedback {
  font-size: 14px;
  background: #ffffff15;
  border: 1px solid #ffffff35;
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 18px;
}
.quiz-feedback strong {
  display: block;
  color: #b8f4c3;
  margin-bottom: 6px;
}
.quiz-feedback.wrong strong {
  color: #ffd1bf;
}
.quiz-explanation { display: block; text-align: start; }
.quiz-actions {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
}
.quiz .button {
  background: var(--gold);
  border-color: #d3a634;
  color: #4f3d10;
  box-shadow: 0 4px 0 #b48a24;
}
.quiz .text-button {
  color: #fbefce;
  font-size: 12px;
}
.privacy-note {
  font-size: 10px;
  color: #d0dfd5;
  margin-top: 25px;
}
.inline-lab {
  display: flex;
  gap: 22px;
  align-items: center;
  border: 1px solid #cdbd9d;
  border-radius: 15px;
  margin: 35px 0;
  padding: 12px;
  background: #fffcf6;
}
.inline-lab > img {
  width: 95px;
  height: 67px;
  object-fit: cover;
  border-radius: 9px;
}
.inline-lab strong,
.inline-lab small {
  display: block;
}
.inline-lab strong {
  font-size: 14px;
}
.inline-lab small {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.inline-lab svg {
  margin-inline-start: auto;
}
.lesson-bottom {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
}
.lesson-bottom > a:not(.button) {
  font-size: 13px;
  color: var(--teal);
}
.lab-top {
  padding-top: 35px;
  padding-bottom: 25px;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: end;
}
.back-link {
  display: flex;
  gap: 5px;
  align-items: center;
  font-size: 11px;
  color: var(--teal);
}
.back-link svg {
  width: 13px;
}
.lab-top h1 {
  font-size: 35px;
  margin-top: 12px;
}
.lab-top p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 7px;
}
.lab-modes {
  display: flex;
  border: 1px solid #d5c39e;
  border-radius: 11px;
  padding: 5px;
  background: #efe5d0;
  gap: 5px;
}
.lab-modes button {
  font-size: 12px;
  min-height: 39px;
  padding: 5px 15px;
  border-radius: 7px;
  white-space: nowrap;
  font-weight: 750;
}
.lab-modes button[aria-pressed="true"] {
  background: var(--teal);
  color: white;
  box-shadow: 0 2px 0 #035761;
}
.lab-stage {
  position: relative;
  max-width: 1320px;
  padding: 10px;
  background: #f8edd6;
  border: 1px solid #d5c39e;
  border-radius: 23px;
  box-shadow: var(--shadow);
}
.lab-scene {
  border-radius: 15px;
}
.lab-scene .inspector {
  right: 18px;
  top: 20px;
  width: 300px;
}
.lab-note {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 10px;
  color: var(--muted);
  padding: 23px 0 55px;
}
.lab-note a {
  display: flex;
  gap: 10px;
  color: var(--teal);
}
.lab-note svg {
  width: 15px;
}
.connection-layer {
  position: absolute;
  inset: 10px;
  pointer-events: none;
  overflow: hidden;
  border-radius: 15px;
}
.connection-target {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  pointer-events: auto;
  z-index: 7;
  min-width: 80px;
  min-height: 85px;
}
.target-ring {
  border: 3px dashed #fff7bd;
  box-shadow: 0 0 0 9px #f7d86240;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  color: white;
  display: grid;
  place-items: center;
  background: #006b74b5;
  font-size: 35px;
  animation: target-breathe 2.5s ease-in-out infinite;
}
.target-label {
  background: var(--cream);
  padding: 5px 13px;
  border: 1px solid #ddc27a;
  border-radius: 6px;
  color: var(--ink);
  font-weight: 800;
  font-size: 11px;
  white-space: nowrap;
}
.connection-target.drag-over .target-ring {
  background: #178855;
  border-style: solid;
  transform: scale(1.12);
}
.signal-line {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  stroke: var(--gold);
  stroke-width: 6;
  filter: drop-shadow(0 0 6px #fff6a6);
  opacity: 0;
}
.signal-line path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
}
.connected .signal-line {
  opacity: 1;
}
.connected .signal-line path {
  animation: signal-flow 1s var(--ease) forwards;
}
.screen-shade {
  position: absolute;
  inset: 0;
  background: #10242cf0;
  clip-path: polygon(10.7% 18.5%, 39.1% 25%, 39.6% 58.5%, 11.4% 61%);
  transition: opacity 0.8s;
}
.connected .screen-shade {
  opacity: 0;
}
.router-target {
  position: absolute;
  left: 10%;
  bottom: 12%;
  width: 25%;
  filter: drop-shadow(0 10px 12px #0005);
}
.lab-task {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 35px;
  padding: 28px 0 12px;
}
.task-copy h2 {
  font-size: 27px;
}
.task-copy p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
}
.tool-tray {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.tool-tray button {
  flex: 1;
  max-width: 145px;
  border: 1px solid #d7c6a5;
  border-radius: 13px;
  background: #fffaf0;
  box-shadow: 0 4px 0 #ded1b8;
  min-height: 120px;
  padding: 10px;
  touch-action: none;
  user-select: none;
}
.tool-tray button img {
  width: 80px;
  height: 65px;
  object-fit: contain;
  margin: 0 auto 8px;
  pointer-events: none;
}
.tool-tray button span {
  font-size: 11px;
  font-weight: 800;
  pointer-events: none;
}
.tool-tray button[aria-pressed="true"] {
  border: 2px solid var(--teal);
  background: #e0f0e8;
  transform: translateY(-4px);
}
.connection-feedback {
  font-size: 13px;
  align-self: center;
  color: var(--teal);
  font-weight: 700;
  min-height: 30px;
}
.connection-feedback.wrong {
  color: #ad4738;
}
.task-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
  align-items: center;
}
.task-actions .button {
  font-size: 12px;
  min-height: 40px;
}
.connection-celebration span {
  position: absolute;
  left: var(--sx);
  top: var(--sy);
  font-size: 20px;
  color: #ffdf6f;
  animation: spark-out 0.85s var(--ease) forwards;
}
.drag-ghost {
  position: fixed;
  z-index: 90;
  width: 78px;
  height: 78px;
  pointer-events: none;
  object-fit: contain;
  filter: drop-shadow(0 10px 10px #0005);
  transform: translate(-50%, -50%);
}
footer {
  border-top: 1px solid #d9ceb4;
  padding: 48px max(40px, calc((100% - 1240px) / 2));
  display: flex;
  justify-content: space-between;
  gap: 40px;
  background: #f0e8d6;
}
footer .brand {
  font-size: 24px;
}
footer > div:first-child > p {
  font-size: 12px;
  margin-top: 13px;
  color: var(--muted);
}
footer > div:nth-child(2) {
  display: flex;
  gap: 23px;
  align-items: start;
  font-size: 12px;
  flex-wrap: wrap;
  padding-top: 10px;
}
.footer-note {
  font-size: 10px;
  color: var(--muted);
  max-width: 250px;
  padding-top: 7px;
}
@keyframes hotspot-halo {
  0% {
    transform: scale(0.7);
    opacity: 0.9;
  }
  75%,
  100% {
    transform: scale(1.55);
    opacity: 0;
  }
}
@keyframes target-breathe {
  0%,
  100% {
    box-shadow: 0 0 0 8px #f7d86235;
  }
  50% {
    box-shadow: 0 0 0 15px #f7d86210;
  }
}
@keyframes gentle-enter {
  from {
    opacity: 0;
    transform: translateY(20px) rotate(-4deg);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes signal-flow {
  to {
    stroke-dashoffset: 0;
  }
}
@keyframes spark-out {
  from {
    opacity: 1;
    transform: translate(0, 0) scale(0.6);
  }
  to {
    opacity: 0;
    transform: translate(var(--dx), var(--dy)) scale(1.2) rotate(50deg);
  }
}
@media (min-width: 1600px) {
  .home-hero {
    min-height: 790px;
  }
  .hero-copy {
    padding-top: 125px;
  }
}
@media (max-width: 1100px) {
  .section {
    width: calc(100% - 48px);
  }
  .nav-inner {
    width: calc(100% - 40px);
    gap: 20px;
  }
  .site-header nav {
    gap: 25px;
  }
  .course-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .filter-bar {
    align-items: stretch;
    flex-direction: column;
    gap: 15px;
  }
  .grade-tabs {
    width: max-content;
    max-width: 100%;
  }
  .search {
    max-width: 100%;
  }
  .home-hero {
    min-height: 610px;
  }
  .hero-copy {
    margin-right: 5%;
    width: 44%;
    padding-top: 90px;
  }
  .hero-copy h1 {
    font-size: 61px;
  }
  .hero-copy p {
    font-size: 16px;
  }
  .hero-copy .button {
    font-size: 12px;
    padding: 10px 15px;
    gap: 10px;
  }
  .lab-invite {
    gap: 35px;
  }
  .course-hero {
    gap: 35px;
  }
  .lesson-card {
    gap: 12px;
    padding: 15px;
  }
  .lesson-thumb {
    width: 45px;
    height: 45px;
  }
  .lesson-thumb img {
    width: 38px;
    height: 38px;
  }
  .lab-scene .inspector {
    width: 280px;
  }
  .how-grid {
    gap: 20px;
  }
  footer {
    flex-wrap: wrap;
  }
}
@media (max-width: 760px) {
  .section {
    width: calc(100% - 32px);
  }
  .nav-inner {
    width: calc(100% - 28px);
    height: 65px;
    gap: 12px;
  }
  .brand {
    font-size: 22px;
  }
  .brand > img {
    width: 25px;
    height: 25px;
  }
  .nav-explore {
    display: none;
  }
  .site-header nav {
    gap: 19px;
    font-size: 11px;
  }
  .site-header nav a:last-child {
    display: none;
  }
  .home-hero {
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0 0 25px;
  }
  .hero-copy {
    order: -1;
    width: auto;
    text-align: center;
    margin: 0;
    padding: 34px 24px 18px;
    background: var(--cream);
  }
  .hero-copy h1 {
    font-size: 50px;
    line-height: 1.4;
  }
  .hand-underline {
    display: inline-block;
    margin-right: 12px;
  }
  .heading-rays {
    display: none;
  }
  .hero-copy p {
    font-size: 15px;
    line-height: 1.8;
    margin: 12px 0 18px;
  }
  .hero-actions {
    justify-content: center;
    gap: 12px;
  }
  .hero-copy .hero-note {
    font-size: 10px;
    margin-top: 16px;
  }
  .hero-copy .eyebrow {
    font-size: 11px;
    margin-bottom: 8px;
  }
  .home-scene {
    position: relative !important;
    height: auto;
    aspect-ratio: 1.62 !important;
    width: 100%;
  }
  .home-scene .scene-wash {
    display: none;
  }
  .home-scene .scene-image {
    object-fit: cover;
    object-position: 35% 50%;
  }
  .home-scene .scene-hint {
    bottom: 25px;
    left: 12px;
    font-size: 10px;
    padding: 5px 10px;
  }
  .hotspot {
    width: 42px;
    height: 42px;
  }
  .spot-core {
    width: 27px;
    height: 27px;
    font-size: 21px;
    box-shadow:
      0 0 0 6px #f7cd5450,
      0 0 20px #ffedb0;
  }
  .spot-label {
    display: none;
  }
  .paper-edge {
    height: 25px;
  }
  .inspector,
  .lab-scene .inspector {
    position: relative;
    right: auto !important;
    left: auto !important;
    top: auto !important;
    width: calc(100% - 20px);
    max-width: none;
    margin: -15px auto 10px;
    padding: 20px;
    box-shadow: 0 10px 20px #14262622;
  }
  .inspector-art {
    height: 85px;
  }
  .inspector h3 {
    font-size: 20px;
  }
  .inspector p {
    font-size: 12px;
  }
  .inspector-crop {
    height: 120px;
  }
  .scene:has(.inspector:not([hidden])) {
    aspect-ratio: auto;
  }
  .scene:has(.inspector:not([hidden])) .scene-image {
    height: auto;
    aspect-ratio: 16/9;
  }
  .spot-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
  }
  .spot-layer .hotspot {
    pointer-events: auto;
  }
  .scene:has(.inspector:not([hidden])) .spot-layer {
    height: auto;
    aspect-ratio: 16/9;
    bottom: auto;
  }
  .home-scene:has(.inspector:not([hidden])) {
    aspect-ratio: auto !important;
  }
  .home-scene:has(.inspector:not([hidden])) .scene-image,
  .home-scene:has(.inspector:not([hidden])) .spot-layer {
    aspect-ratio: 1.62;
  }
  .scene:has(.inspector:not([hidden])) .scene-hint {
    display: none;
  }
  .catalog {
    padding: 38px 0 20px;
  }
  .section-heading {
    display: block;
    margin-bottom: 20px;
  }
  .section-heading p {
    font-size: 12px;
    margin-top: 12px;
  }
  .section-heading h2 {
    font-size: 28px;
  }
  .filter-bar {
    gap: 14px;
  }
  .grade-tabs {
    width: 100%;
    padding: 4px;
    gap: 0;
  }
  .grade-tabs button {
    font-size: 11px;
    padding: 7px 11px;
    min-height: 36px;
    flex-shrink: 0;
  }
  .subject-tabs {
    gap: 18px;
    padding: 17px 0 22px;
    flex-wrap: nowrap;
    overflow-x: auto;
  }
  .subject-tabs button {
    white-space: nowrap;
    font-size: 11px;
  }
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 15px;
  }
  .course-art {
    height: 135px;
  }
  .course-art img {
    width: 115px;
    height: 95px;
  }
  .course-art:before {
    width: 110px;
    height: 110px;
  }
  .grade-label {
    font-size: 8px;
    padding: 3px 7px;
    right: 8px;
    top: 8px;
  }
  .course-copy {
    padding: 13px;
  }
  .course-copy h3 {
    font-size: 15px;
  }
  .course-copy > p {
    font-size: 10px;
  }
  .overline {
    font-size: 9px;
  }
  .card-meta {
    font-size: 8px;
    margin-top: 13px;
    padding-top: 9px;
    gap: 5px;
  }
  .card-arrow {
    width: 24px;
    height: 24px;
    left: 8px;
    bottom: 8px;
  }
  .lab-invite {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 55px 0;
    text-align: center;
  }
  .lab-invite p {
    font-size: 13px;
    margin: 15px 0 23px;
  }
  .lab-invite h2 {
    font-size: 28px;
  }
  .lab-preview {
    transform: rotate(-1deg);
  }
  .how {
    padding: 10px 0 50px;
  }
  .how-grid {
    gap: 18px;
    margin-top: 24px;
    grid-template-columns: 1fr;
  }
  .how-grid article {
    display: grid;
    grid-template-columns: 76px 1fr;
    gap: 0 18px;
    text-align: start;
    padding: 15px 5px;
  }
  .how-grid img {
    width: 65px;
    height: 65px;
    grid-row: 1/3;
    margin: auto;
  }
  .how-grid h3 {
    font-size: 18px;
  }
  .how-grid p {
    font-size: 12px;
    margin-top: 6px;
  }
  .step-number {
    display: none;
  }
  .crumb {
    padding-top: 18px;
    font-size: 10px;
    gap: 8px;
  }
  .course-hero {
    grid-template-columns: 1fr;
    padding: 28px 0 35px;
    gap: 30px;
    text-align: center;
  }
  .course-hero h1 {
    font-size: 35px;
  }
  .course-subtitle {
    font-size: 19px;
  }
  .course-hero p:not(.course-subtitle) {
    font-size: 13px;
  }
  .course-hero-art {
    min-height: 230px;
    max-width: 440px;
    width: 100%;
    margin: auto;
  }
  .course-hero-art > img:not(.feature-cutout) {
    height: 270px;
  }
  .course-hero-art .feature-cutout {
    height: 175px;
    width: 230px;
  }
  .art-callout {
    right: 8px;
    bottom: -8px;
    font-size: 11px;
    padding: 9px 14px;
  }
  .art-callout img {
    width: 40px;
    height: 40px;
  }
  .art-orbit {
    display: none;
  }
  .lessons-section {
    padding: 20px 0 40px;
  }
  .lesson-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .lesson-card {
    padding: 15px;
    gap: 14px;
  }
  .lesson-card h3 {
    font-size: 15px;
  }
  .lesson-card p {
    font-size: 11px;
  }
  .lesson-number {
    font-size: 17px;
  }
  .recording-invite {
    flex-direction: column;
    text-align: center;
    gap: 8px;
    padding: 25px;
    margin-bottom: 45px;
  }
  .recording-invite > img {
    height: 160px;
    width: 180px;
  }
  .recording-invite h2 {
    font-size: 25px;
  }
  .recording-invite p {
    font-size: 12px;
  }
  .lesson-page {
    padding: 25px 0 45px;
  }
  .lesson-heading h1 {
    font-size: 32px;
  }
  .lesson-heading > p {
    font-size: 13px;
  }
  .learn-panel {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 17px;
  }
  .learn-art {
    min-height: 180px;
  }
  .learn-art > img {
    height: 175px;
  }
  .learn-point p {
    font-size: 13px;
    padding-right: 39px;
  }
  .quiz {
    padding: 24px 19px;
    margin-top: 30px;
  }
  .quiz h2 {
    font-size: 20px;
  }
  .quiz-options button {
    font-size: 13px;
    padding: 13px 12px;
    gap: 12px;
  }
  .quiz-feedback {
    font-size: 12px;
    padding: 13px;
  }
  .quiz-actions {
    gap: 10px;
  }
  .quiz-actions .button {
    font-size: 12px;
    padding: 10px 14px;
  }
  .quiz .text-button {
    font-size: 10px;
  }
  .lesson-bottom {
    gap: 10px;
  }
  .lesson-bottom .button {
    font-size: 11px;
    padding: 9px 13px;
    gap: 10px;
  }
  .inline-lab {
    gap: 12px;
  }
  .inline-lab > img {
    width: 75px;
    height: 55px;
  }
  .inline-lab strong {
    font-size: 12px;
  }
  .inline-lab small {
    font-size: 9px;
  }
  .lab-top {
    display: block;
    padding-top: 22px;
    padding-bottom: 18px;
  }
  .lab-top h1 {
    font-size: 30px;
  }
  .lab-top p {
    font-size: 11px;
  }
  .lab-modes {
    margin-top: 18px;
    justify-content: center;
    width: max-content;
    max-width: 100%;
  }
  .lab-modes button {
    font-size: 11px;
    padding: 5px 12px;
  }
  .lab-stage {
    width: calc(100% - 16px);
    padding: 6px;
    border-radius: 17px;
  }
  .lab-scene {
    border-radius: 12px;
  }
  .lab-scene .scene-hint {
    font-size: 8px;
    bottom: 10px;
    left: 8px;
    padding: 4px 8px;
  }
  .connection-layer {
    inset: 6px;
  }
  .target-ring {
    width: 44px;
    height: 44px;
    font-size: 25px;
    border-width: 2px;
  }
  .target-label {
    font-size: 9px;
    padding: 3px 8px;
  }
  .connection-target {
    gap: 5px;
    min-width: 55px;
    min-height: 65px;
  }
  .lab-task {
    grid-template-columns: 1fr;
    gap: 17px;
    padding-top: 22px;
  }
  .task-copy h2 {
    font-size: 23px;
  }
  .task-copy p {
    font-size: 11px;
  }
  .tool-tray {
    gap: 11px;
  }
  .tool-tray button {
    min-height: 100px;
  }
  .tool-tray button img {
    width: 65px;
    height: 55px;
  }
  .tool-tray button span {
    font-size: 10px;
  }
  .connection-feedback {
    font-size: 12px;
    text-align: center;
  }
  .lab-note {
    display: block;
    font-size: 9px;
    padding-top: 17px;
    padding-bottom: 35px;
  }
  .lab-note a {
    margin-top: 10px;
  }
  .task-number {
    font-size: 10px;
  }
  .inspector-links a {
    font-size: 11px;
  }
  footer {
    display: block;
    padding: 30px 23px;
  }
  footer > div:nth-child(2) {
    margin: 25px 0 15px;
    gap: 20px;
  }
  .footer-note {
    max-width: none;
  }
  .site-header:has(+ main .scene-inspecting) {
    z-index: 40;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
  .connected .signal-line path {
    stroke-dashoffset: 0;
  }
  .course-card:hover,
  .course-card:hover img {
    transform: none;
  }
}
/* Approved stacked identity; one shared treatment across header/footer. */
/* One configured showcase; the interactive studio remains the same scene. */
.showcase{background:var(--cream);position:relative}
.showcase.is-enhanced .showcase-stage{display:grid;isolation:isolate;touch-action:pan-y pinch-zoom}
.showcase.is-enhanced .showcase-panel{grid-area:1/1;min-width:0;align-self:start}
.showcase.is-enhanced .showcase-panel[data-active=false]{visibility:hidden;pointer-events:none}
.showcase.is-enhanced .showcase-panel.is-leaving{visibility:visible;pointer-events:none}
.showcase.is-enhanced .showcase-panel[data-active=true]{z-index:1}
.showcase .home-hero{min-height:clamp(540px,41vw,650px)}
.showcase .hero-copy{padding-top:65px;padding-bottom:85px;width:38%;margin-right:7%}
.showcase .hero-copy h1{font-size:clamp(48px,5vw,76px)}
.showcase .hero-copy p{font-size:18px;margin:20px 0 25px}
.showcase-course{min-height:clamp(540px,41vw,650px);display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);direction:ltr;align-items:center;gap:46px;max-width:1440px;padding:44px 64px 50px;margin:auto}
.showcase-copy{direction:rtl;text-align:start}
.showcase-copy h2{font-size:clamp(28px,2.7vw,42px);line-height:1.55;margin:12px 0 18px}
.showcase-copy>p{font-size:15px;line-height:1.95;color:var(--muted)}
.showcase-copy .hero-actions{margin-top:25px;gap:12px}
.showcase-copy .button{font-size:14px;padding:12px 18px}
.showcase-copy .showcase-scope{font-size:12px;margin-top:18px}
.showcase-art{position:relative;min-width:0;transform:rotate(-.5deg)}
.showcase-art:before,.showcase-art:after{content:'';position:absolute;inset:0;background:#eee4cc;border-radius:14px;transform:translateY(9px) rotate(1.5deg);z-index:-1;box-shadow:0 12px 30px #68512912}
.showcase-art:after{transform:translateY(5px) rotate(-1deg);background:#f5eddc}
.showcase-art img{width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;border-radius:12px;box-shadow:0 9px 26px #5047321a}
.showcase-ledger{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 225px;align-items:center;gap:28px;padding:14px 0 20px;width:calc(100% - 96px);max-width:1370px;margin:auto}
.showcase-ledger:after{content:'';position:absolute;left:50%;top:0;bottom:0;width:100vw;transform:translateX(-50%);background:var(--paper);box-shadow:0 12px 18px #61513a0b;z-index:-1}
.showcase-rail{display:flex;gap:19px;overflow-x:auto;overscroll-behavior-inline:contain;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:#dfceb0 transparent;padding:10px 5px 12px;min-width:0}
.showcase-bookmark{width:180px;flex:0 0 180px;scroll-snap-align:center;text-align:center;position:relative;border-radius:8px}
.showcase-thumbnail{display:block;border-radius:9px;background:var(--cream);border:2px solid transparent;padding:2px;transition:transform 220ms var(--ease),border-color 220ms}
.showcase-thumbnail img{width:100%;aspect-ratio:16/9;object-fit:contain;border-radius:5px}
.showcase-bookmark-label{font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;gap:7px;padding-top:7px}
.showcase-bookmark small{font-size:10px;font-weight:500;color:var(--muted)}
.showcase-bookmark:after{content:'';position:absolute;bottom:-7px;inset-inline:12%;height:4px;background:var(--gold);border-radius:50%;opacity:0;transform:scaleX(.3);transition:transform 220ms var(--ease),opacity 220ms}
.showcase-bookmark[aria-selected=true] .showcase-thumbnail{border-color:var(--gold);transform:translateY(-4px)}
.showcase-bookmark[aria-selected=true]:after{opacity:1;transform:scaleX(1)}
.showcase-bookmark:hover .showcase-thumbnail{transform:translateY(-4px)}
.showcase-navigation{display:flex;flex-direction:column;align-items:center;gap:14px}
.showcase-rail-title{font-size:14px;font-weight:800}
.showcase-controls{display:none;align-items:center;justify-content:center;gap:10px}
.is-enhanced .showcase-controls{display:flex}
.showcase-controls button{width:40px;height:40px;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:50%;display:grid;place-items:center;box-shadow:0 3px 0 #d8ccb755}
.showcase-controls button:hover{border-color:var(--teal);background:#edf5ef}
.showcase-position{font-size:11px;color:var(--muted);direction:ltr;min-width:29px}
.showcase-play-icon{fill:currentColor;stroke:none}.showcase-pause-icon{display:none;stroke-width:3}
[data-showcase-play][aria-pressed=true] .showcase-play-icon{display:none}
[data-showcase-play][aria-pressed=true] .showcase-pause-icon{display:block}
@media(max-width:1100px){
 .showcase-course{padding:35px 30px;gap:28px;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)}
 .showcase .hero-copy{padding-top:60px;width:42%;margin-right:5%}
 .showcase .hero-copy p{font-size:16px}
 .showcase-ledger{width:calc(100% - 48px);grid-template-columns:minmax(0,1fr) 175px;gap:16px}
 .showcase-bookmark{width:155px;flex-basis:155px}.showcase-navigation{gap:10px}
}
@media(max-width:760px){
 .showcase .home-hero{min-height:0;padding-bottom:12px}
 .showcase .hero-copy{width:auto;margin:0;padding:25px 20px 18px}
 .showcase .hero-copy h1{font-size:39px;line-height:1.35}
 .showcase .hero-copy p{font-size:14px;line-height:1.75;margin:12px 0 17px}
 .showcase .hero-copy .hero-note{margin-top:12px}
 .showcase .home-scene{aspect-ratio:1.77!important}
 .showcase .home-scene.scene-inspecting{aspect-ratio:auto!important}
 .showcase-course{display:flex;flex-direction:column;min-height:0;padding:22px 16px 18px;gap:20px}
 .showcase-art{width:100%;transform:none}
 .showcase-copy{width:100%;text-align:center}
 .showcase-copy .eyebrow{font-size:11px}
 .showcase-copy h2{font-size:24px;line-height:1.55;margin:9px 0}
 .showcase-copy>p{font-size:13px;line-height:1.8;max-width:400px;margin:auto}
 .showcase-copy .hero-actions{margin-top:16px}
 .showcase-copy .showcase-scope{font-size:11px;margin-top:12px}
 .showcase-ledger{width:100%;padding:6px 0 12px;grid-template-columns:1fr;gap:6px}
 .showcase-rail{padding:10px 16px 12px;gap:12px;scroll-padding-inline:16px}
 .showcase-bookmark{width:116px;flex-basis:116px}
 .showcase-bookmark-label{font-size:11px;gap:4px}
 .showcase-bookmark small{font-size:9px}
 .showcase-navigation{flex-direction:row;justify-content:space-between;padding:0 20px;gap:10px}
 .showcase-rail-title{font-size:11px}
 .showcase-controls{gap:8px}.showcase-controls button{width:40px;height:40px}
 .showcase-position{font-size:10px}
}
@media(prefers-reduced-motion:reduce){.showcase-bookmark:hover .showcase-thumbnail,.showcase-bookmark[aria-selected=true] .showcase-thumbnail{transform:none}}
.brand{background:#075365;border-radius:15px;padding:3px 10px!important;display:inline-flex;align-items:center;justify-content:center}
.brand .brand-wordmark{width:94px;height:62px;object-fit:contain;margin:0;transform:none}
.curriculum-scope{color:#52717b;max-width:700px;line-height:1.9}
.unit-title{font-size:24px;margin:42px 0 20px;color:#087c88}
.curriculum-card{grid-template-columns:60px 1fr!important}
.curriculum-activities{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.curriculum-activities a{font-size:13px;color:#126477;background:#e7f2ea;border-radius:8px;padding:6px 12px}
.curriculum-activities a:hover{background:#d0e9df}
.curriculum-activities .presentation-link{background:#087e91;color:white}
.quiz-options button:has(.option-art){min-height:150px;display:grid;grid-template-columns:30px 120px 1fr;align-items:center;gap:12px}
.quiz-options .option-art{width:120px;height:105px;object-fit:contain}
.learn-art:has(img[src*=lesson-01-cover]){padding:0;overflow:hidden}
.learn-art img[src*=lesson-01-cover]{width:100%;height:100%;max-width:none;object-fit:contain;transform:none}
.course-hero-art.illustrated-cover{min-height:0;border-radius:20px;background:transparent}
.course-hero-art.illustrated-cover>img{height:auto;aspect-ratio:auto;object-fit:contain;border-radius:20px}
.course-hero-art.illustrated-cover .art-callout{position:relative;inset:auto;justify-self:center;margin-top:12px;transform:none}
.course-hero-art.illustrated-cover .art-orbit{display:none}
@media(max-width:600px){.brand .brand-wordmark{width:75px;height:50px}.quiz-options button:has(.option-art){grid-template-columns:25px 75px 1fr;min-height:104px}.quiz-options .option-art{width:75px;height:75px}.curriculum-card{grid-template-columns:36px 1fr!important}.unit-title{font-size:20px}}
/* The same lab is embedded by the presenter; no duplicate public-site chrome. */
body.presentation-lab .site-header,body.presentation-lab footer,
body.presentation-lab .back-link,body.presentation-lab .lab-note{display:none}
body.presentation-lab .lab-top{padding-top:16px;padding-bottom:10px}
body.presentation-lab .lab-top h1{font-size:26px}
body.presentation-lab .lab-top p{font-size:14px}
body.presentation-lab .lab-stage{max-width:1050px}
body.presentation-lab .lab-task{padding-top:12px;padding-bottom:12px}
body.audience-lab{pointer-events:none}
.lab-exhibits:has(iframe[hidden]){padding:0}
.exhibit-frame{width:100%;height:min(76vh,820px);border:0;border-radius:18px;background:#075365}
.presentation-lab .exhibit-frame{height:calc(100vh - 145px)}
.lab-modes{flex-wrap:wrap}
.curriculum-tree,.lesson-children{list-style:none;padding:0;margin:0}
.curriculum-tree{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.curriculum-lesson{background:#fffdf5;border:1px solid #ddd9c8;border-radius:18px;overflow:hidden}
.curriculum-lesson summary,.curriculum-summary{display:flex;gap:14px;align-items:center;padding:18px;list-style:none}
.curriculum-lesson summary{cursor:pointer}
.curriculum-lesson summary:focus-visible{outline:3px solid #138b8d;outline-offset:-3px}
.curriculum-lesson strong{font-size:19px;line-height:1.6;display:block}
.curriculum-lesson small{display:block;color:#62766d;font-size:13px;margin-top:5px}
.tree-thumb{width:110px;flex:none}.tree-thumb img{width:100%;aspect-ratio:16/9;object-fit:contain;border-radius:10px}
.lesson-children{margin:0 45px 22px 22px;padding-inline-start:20px;border-inline-start:2px solid #d9e8dc}
.lesson-children li{position:relative;padding:8px 0}.lesson-children li:before{content:'';width:15px;height:2px;background:#d9e8dc;position:absolute;inset-inline-start:-20px;top:22px}
.lesson-children a{font-weight:700;font-size:15px;color:#075f6b;text-decoration:none}.lesson-children a:hover{text-decoration:underline}
.lesson-children span{font-size:12px;background:#e1f3ed;border-radius:10px;padding:2px 7px}.lesson-children .supplement a{color:#697b75;font-size:13px;font-weight:500}
.curriculum-unit+.curriculum-unit{margin-top:50px}.lesson-cover img{width:100%;border-radius:20px}.creative-subtitle{color:#138b8d;font-size:24px!important;font-weight:700}
.lesson-outline{margin:50px 0}.lesson-outline ol{display:grid;grid-template-columns:1fr 1fr;gap:20px 45px}.lesson-outline li{padding:12px}.lesson-outline a{font-weight:800;color:#075f6b}.lesson-outline p{font-size:15px;color:#667a70}
.quiz-illustration{margin:24px auto;max-width:560px}.quiz-illustration img{display:block;width:100%;height:auto;max-height:380px;object-fit:contain}
@media(max-width:760px){.curriculum-tree,.lesson-outline ol{grid-template-columns:1fr}.tree-thumb{width:82px}.curriculum-lesson summary,.curriculum-summary{gap:10px;padding:14px}.curriculum-lesson strong{font-size:16px}.lesson-children{margin-inline-start:32px}.lesson-number{font-size:18px}}