:root {
  color-scheme: light;
  --canvas: #ffffff;
  --surface: #faf8ff;
  --surface-warm: #fffaf0;
  --ink: #241b35;
  --ink-strong: #211044;
  --muted: #675f72;
  --violet: #7c5cfc;
  --violet-dark: #5938d5;
  --violet-soft: #efeaff;
  --pink: #ce82ff;
  --yellow: #ffc840;
  --yellow-deep: #b85f00;
  --green: #147a4f;
  --green-soft: #e7f8ef;
  --amber: #9a5b00;
  --amber-soft: #fff3d5;
  --red: #a33c49;
  --red-soft: #fff0f2;
  --line: #ded8e8;
  --line-strong: #bfb5cf;
  --shadow-sm: 0 10px 30px rgba(49, 27, 90, 0.08);
  --shadow-md: 0 24px 70px rgba(49, 27, 90, 0.14);
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 36px;
  --radius-pill: 999px;
  --header-height: 76px;
  --display-font: ui-rounded, "Arial Rounded MT Bold", "Trebuchet MS", system-ui, sans-serif;
  --body-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
  color: var(--ink);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body:has(dialog[open]) {
  overflow: hidden;
}

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

button,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

p,
h1,
h2,
h3,
h4,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
.wordmark {
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.06;
  text-wrap: balance;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(3rem, 7vw, 6.6rem);
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2.25rem, 5vw, 4.5rem);
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(1.45rem, 2.4vw, 2.25rem);
}

h4 {
  margin-bottom: 8px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 20px;
}

.container {
  width: min(100% - 48px, 1320px);
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(88px, 11vw, 160px);
  background: var(--canvas);
}

.section-heading {
  max-width: 840px;
  margin-bottom: clamp(42px, 7vw, 80px);
  text-align: center;
}

.section-heading > p:last-child,
.demo-heading > p:last-child {
  max-width: 680px;
  margin-inline: auto;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--violet-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.button,
.text-button,
.mode-tabs button,
.dialog-close,
.mobile-download,
.screenshot-open {
  min-height: 44px;
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 136px;
  padding: 13px 22px;
  border: 2px solid var(--ink-strong);
  border-radius: var(--radius-pill);
  background: var(--yellow);
  color: var(--ink-strong);
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 5px 0 var(--ink-strong);
}

.button-small {
  min-width: auto;
  padding: 11px 18px;
  font-size: 0.9rem;
}

.button-secondary {
  border-color: var(--violet-dark);
  background: var(--violet-soft);
  color: var(--violet-dark);
  box-shadow: 0 5px 0 var(--violet-dark);
}

.text-button {
  padding: 8px 4px;
  border: 0;
  background: transparent;
  color: var(--violet-dark);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 4px;
}

:where(a, button, textarea):focus-visible {
  outline: 3px solid var(--pink);
  outline-offset: 4px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  font-size: 1.55rem;
  text-decoration: none;
}

.wordmark span {
  color: var(--yellow-deep);
}

.store-links,
.noscript-store-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.store-link {
  display: inline-flex;
  min-height: 44px;
  border-radius: 10px;
}

.store-link img {
  width: auto;
  height: 52px;
}

.store-links-large .store-link img {
  height: 62px;
}

.campaign-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(124, 92, 252, 0.25);
  border-radius: var(--radius-lg);
  background: #24134e;
  box-shadow: var(--shadow-md);
}

.campaign-frame img {
  width: 100%;
  height: auto;
}

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

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  background: var(--ink-strong);
  color: white;
  font-weight: 750;
  text-decoration: none;
  transform: translateY(-160%);
}

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

.representative-note,
.privacy-note,
.trust-line,
.assistive-status {
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  padding-block: 64px 110px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.site-footer p {
  color: var(--muted);
}

.site-footer nav {
  display: grid;
  align-content: start;
  gap: 10px;
}

.site-footer nav a {
  color: var(--violet-dark);
  font-weight: 700;
  text-underline-offset: 4px;
}

.noscript-download {
  position: relative;
  z-index: 10;
  padding: 28px 24px;
  border-top: 1px solid var(--line);
  background: var(--surface-warm);
  text-align: center;
}

.noscript-store-links {
  justify-content: center;
}

.noscript-store-links img {
  height: 52px;
  width: auto;
}

/* Desktop and tablet composition */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(222, 216, 232, 0.8);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.site-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
  height: 100%;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.2vw, 36px);
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  min-height: calc(100svh - var(--header-height));
  padding-top: clamp(64px, 8vw, 112px);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  width: min(64vw, 860px);
  aspect-ratio: 1;
  top: -35%;
  right: -20%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(206, 130, 255, 0.22), rgba(239, 234, 255, 0) 68%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.7fr);
  align-items: center;
  gap: clamp(56px, 9vw, 140px);
}

.hero-copy {
  max-width: 760px;
}

.hero-lead {
  max-width: 650px;
  margin-bottom: 32px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.hero .store-links {
  margin-bottom: 20px;
}

.hero-visual {
  justify-self: end;
  width: min(100%, 500px);
  max-height: min(74svh, 760px);
}

.hero-visual img {
  transform: translateY(-1%);
}

.credibility {
  padding-block: 28px;
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.credibility-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.credibility-grid p {
  display: grid;
  gap: 4px;
  min-height: 82px;
  margin: 0;
  padding: 14px clamp(18px, 3vw, 42px);
  border-left: 1px solid var(--line);
}

.credibility-grid p:first-child {
  border-left: 0;
}

.credibility-grid strong {
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-size: 1.05rem;
}

.credibility-grid span {
  color: var(--muted);
  font-size: 0.86rem;
}

.demo-section {
  background: linear-gradient(180deg, var(--canvas), var(--surface) 48%, var(--canvas));
}

.demo-heading {
  max-width: 900px;
  margin-bottom: 52px;
  text-align: center;
}

.demo-shell {
  display: grid;
  place-items: center;
}

.demo-phone {
  width: min(100%, 760px);
}

.inline-download {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 64px;
  padding: 28px 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--canvas);
  box-shadow: var(--shadow-sm);
}

.inline-download p {
  max-width: 520px;
  margin: 0;
}

.exercise-layout,
.split-layout,
.boost-layout,
.footer-grid {
  display: grid;
  align-items: center;
  gap: clamp(52px, 8vw, 120px);
}

.exercise-layout {
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
}

.campaign-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.campaign-frame-small {
  border-radius: 28px;
}

.campaign-frame-small.is-offset {
  margin-top: 72px;
  margin-bottom: -72px;
}

.mode-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.mode-tabs button {
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: var(--canvas);
  color: var(--muted);
  font-weight: 750;
}

.mode-tabs button[aria-selected="true"] {
  border-color: var(--violet-dark);
  background: var(--violet-soft);
  color: var(--violet-dark);
}

.mode-panels {
  display: grid;
  gap: 18px;
}

.mode-panels article {
  position: relative;
  padding: 26px 26px 22px 88px;
  border-left: 3px solid var(--line);
}

.mode-panels article[data-active="true"] {
  border-color: var(--violet);
  background: linear-gradient(90deg, var(--surface), transparent);
}

.mode-panels p {
  margin: 0;
  color: var(--muted);
}

.mode-icon {
  position: absolute;
  top: 24px;
  left: 22px;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 15px;
  background: var(--yellow);
  color: var(--ink-strong);
  font-size: 0.85rem;
  font-weight: 850;
}

.story-steps {
  border-block: 1px solid var(--line);
  background: var(--surface-warm);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  padding: 0;
  list-style: none;
}

.step-list li {
  position: relative;
  display: grid;
  align-content: start;
  gap: 9px;
  min-height: 210px;
  padding: 26px 22px;
  border-left: 1px solid var(--line);
}

.step-list li:first-child {
  border-left: 0;
}

.step-list li::after {
  content: "→";
  position: absolute;
  z-index: 2;
  top: 45px;
  right: -12px;
  color: var(--violet);
  font-weight: 900;
}

.step-list li:last-child::after {
  content: none;
}

.step-list span {
  color: var(--violet-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.step-list strong {
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-size: 1.12rem;
}

.step-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.split-layout {
  grid-template-columns: minmax(340px, 0.78fr) minmax(0, 1.22fr);
}

.split-layout > .campaign-frame {
  width: min(100%, 480px);
  max-height: 760px;
  justify-self: center;
}

.ai-section {
  background: var(--canvas);
}

.ai-copy,
.analytics-copy,
.ranking-copy {
  max-width: 680px;
}

.boost-layout {
  grid-template-columns: minmax(0, 0.75fr) minmax(420px, 1.25fr);
  margin-top: 120px;
  padding: clamp(34px, 6vw, 72px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-warm);
}

.progress-section {
  background: linear-gradient(180deg, var(--surface), var(--canvas) 45%);
}

.progress-analytics,
.progress-ranking {
  min-height: 780px;
}

.progress-analytics {
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
}

.progress-ranking {
  margin-top: 96px;
}

.gallery-section {
  overflow: hidden;
}

.story-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 100px clamp(52px, 10vw, 150px);
  max-width: 1080px;
}

.gallery-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(130px, 0.5fr);
  align-items: center;
  gap: 26px;
  margin: 0;
}

.gallery-item:nth-child(even) {
  margin-top: 170px;
}

.screenshot-open {
  position: relative;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(124, 92, 252, 0.3);
  border-radius: 28px;
  background: #24134e;
  box-shadow: var(--shadow-md);
}

.screenshot-open::after {
  content: "Agrandir";
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink-strong);
  font-size: 0.75rem;
  font-weight: 800;
}

.screenshot-open img {
  width: 100%;
  height: auto;
}

.gallery-item figcaption {
  color: var(--muted);
  font-size: 0.92rem;
}

.gallery-item figcaption span,
.gallery-item figcaption strong {
  display: block;
}

.gallery-item figcaption span {
  margin-bottom: 10px;
  color: var(--violet-dark);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.gallery-item figcaption strong {
  margin-bottom: 8px;
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-size: 1.18rem;
  line-height: 1.25;
}

.why-section {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 5vw, 64px);
}

.benefit-grid article {
  padding-top: 24px;
  border-top: 3px solid var(--violet);
}

.benefit-grid article > span {
  color: var(--violet-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.benefit-grid p {
  margin: 0;
  color: var(--muted);
}

.final-download {
  padding-block: clamp(100px, 14vw, 190px);
  background: var(--canvas);
}

.final-download-inner {
  padding: clamp(50px, 8vw, 100px);
  border: 2px solid var(--ink-strong);
  border-radius: var(--radius-lg);
  background: var(--yellow);
  color: var(--ink-strong);
  text-align: center;
  box-shadow: 14px 14px 0 var(--ink-strong);
}

.final-download-inner .eyebrow {
  color: var(--ink-strong);
}

.final-download-inner p:not(.eyebrow) {
  max-width: 620px;
  margin-inline: auto;
  font-size: 1.12rem;
}

.final-download .store-links {
  justify-content: center;
  margin-top: 32px;
}

.footer-grid {
  grid-template-columns: 1fr auto auto;
  align-items: start;
}

.mobile-download {
  display: none;
}

.site-dialog {
  width: min(calc(100% - 32px), 680px);
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 0;
  overflow: visible;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--canvas);
  color: var(--ink);
  box-shadow: var(--shadow-md);
}

.site-dialog::backdrop {
  background: rgba(25, 12, 53, 0.62);
  backdrop-filter: blur(4px);
}

.dialog-panel {
  position: relative;
  padding: clamp(32px, 6vw, 56px);
}

.dialog-close {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--canvas);
  color: var(--ink-strong);
  font-size: 1.65rem;
  line-height: 1;
}

.preview-dialog {
  width: min(calc(100% - 32px), 620px);
}

.preview-panel {
  max-height: calc(100dvh - 32px);
  overflow: auto;
  text-align: center;
}

.preview-panel img {
  width: auto;
  max-height: min(72dvh, 760px);
  margin-inline: auto;
  border-radius: var(--radius-md);
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .site-nav {
    grid-template-columns: 1fr auto;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.75fr);
    gap: 48px;
  }

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

  .credibility-grid p:nth-child(3) {
    border-left: 0;
  }

  .credibility-grid p:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .exercise-layout,
  .split-layout,
  .boost-layout {
    gap: 48px;
  }

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

  .step-list li:nth-child(4) {
    border-left: 0;
  }

  .step-list li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }

  .step-list li:nth-child(3)::after {
    content: none;
  }

  .story-gallery {
    gap: 72px 38px;
  }

  .gallery-item {
    grid-template-columns: 1fr;
  }

  .gallery-item:nth-child(even) {
    margin-top: 100px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 64px;
  }

  body {
    padding-bottom: calc(76px + env(safe-area-inset-bottom));
  }

  .container {
    width: min(100% - 32px, 1320px);
  }

  .section {
    padding-block: 84px;
  }

  h1 {
    font-size: clamp(2.25rem, 12vw, 2.875rem);
  }

  h2 {
    font-size: clamp(2rem, 10vw, 2.75rem);
  }

  h3 {
    font-size: clamp(1.35rem, 7vw, 1.8rem);
  }

  .site-nav {
    gap: 12px;
  }

  .site-nav .wordmark {
    font-size: 1.3rem;
  }

  .nav-download {
    min-height: 44px;
    padding-inline: 15px;
  }

  .hero {
    min-height: auto;
    padding-block: 58px 84px;
  }

  .hero-grid,
  .exercise-layout,
  .split-layout,
  .boost-layout,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-grid {
    gap: 48px;
  }

  .hero-copy {
    text-align: center;
  }

  .hero-copy .store-links {
    justify-content: center;
  }

  .hero-lead {
    font-size: 1.08rem;
  }

  .hero-visual {
    justify-self: center;
    width: min(92vw, 390px);
    max-height: none;
  }

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

  .credibility-grid p,
  .credibility-grid p:nth-child(3) {
    min-height: auto;
    padding: 18px 8px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .credibility-grid p:last-child {
    border-bottom: 0;
  }

  .demo-heading,
  .section-heading {
    margin-bottom: 40px;
  }

  .inline-download {
    align-items: flex-start;
    flex-direction: column;
    margin-top: 48px;
    padding: 24px;
  }

  .inline-download .store-links {
    width: 100%;
  }

  .campaign-pair {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .campaign-frame-small,
  .campaign-frame-small.is-offset,
  .split-layout > .campaign-frame {
    width: min(88vw, 420px);
    max-height: none;
    margin: 0 auto;
  }

  .campaign-frame-small.is-offset {
    justify-self: center;
  }

  .mode-tabs {
    display: grid;
    grid-template-columns: 1fr;
  }

  .mode-tabs button {
    width: 100%;
    text-align: left;
  }

  .mode-panels article {
    padding: 24px 18px 22px 76px;
  }

  .mode-icon {
    left: 16px;
  }

  .step-list {
    grid-template-columns: 1fr;
  }

  .step-list li,
  .step-list li:nth-child(4) {
    min-height: auto;
    padding: 22px 18px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .step-list li:last-child {
    border-bottom: 0;
  }

  .step-list li::after,
  .step-list li:nth-child(3)::after {
    content: "↓";
    top: auto;
    right: 18px;
    bottom: -14px;
    padding-inline: 4px;
    background: var(--surface-warm);
  }

  .step-list li:last-child::after {
    content: none;
  }

  .boost-layout {
    margin-top: 72px;
    padding: 28px 22px;
  }

  .progress-analytics,
  .progress-ranking {
    min-height: auto;
  }

  .progress-analytics > .campaign-frame {
    grid-row: 1;
  }

  .progress-ranking {
    margin-top: 88px;
  }

  .story-gallery {
    display: flex;
    width: 100%;
    max-width: none;
    padding-inline: max(16px, calc((100vw - 1320px) / 2));
    gap: 20px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-padding-inline: 16px;
    scroll-snap-type: inline mandatory;
    scrollbar-width: none;
  }

  .story-gallery::-webkit-scrollbar {
    display: none;
  }

  .gallery-section > .section-heading {
    width: min(100% - 32px, 1320px);
  }

  .gallery-item,
  .gallery-item:nth-child(even) {
    flex: 0 0 min(82vw, 340px);
    gap: 18px;
    margin: 0;
    scroll-snap-align: center;
  }

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

  .final-download-inner {
    padding: 48px 22px;
    box-shadow: 8px 8px 0 var(--ink-strong);
  }

  .footer-grid {
    gap: 36px;
  }

  .mobile-download {
    position: fixed;
    z-index: 90;
    right: 16px;
    bottom: calc(12px + env(safe-area-inset-bottom));
    left: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 12px 20px;
    border: 2px solid var(--ink-strong);
    border-radius: var(--radius-pill);
    background: var(--yellow);
    color: var(--ink-strong);
    font-weight: 850;
    box-shadow: 0 5px 0 var(--ink-strong), 0 14px 36px rgba(33, 16, 68, 0.24);
  }

  .site-dialog {
    width: calc(100% - 24px);
    max-height: calc(100dvh - 24px - env(safe-area-inset-bottom));
    border-radius: 26px;
  }

  .dialog-panel {
    padding: 54px 22px 28px;
  }

  .store-dialog .store-links {
    display: grid;
    justify-items: start;
  }

  .preview-panel img {
    max-height: 68dvh;
  }
}

/* Purposeful interaction and state motion */
.button,
.store-link,
.nav-links a,
.mode-tabs button,
.screenshot-open,
.dialog-close,
.mobile-download,
.leaderboard-list li,
.progress-track > span,
.score-ring,
.boost-answer mark {
  transition-duration: 220ms;
  transition-property: transform, opacity;
  transition-timing-function: ease-out;
}

.button:hover,
.store-link:hover,
.screenshot-open:hover,
.dialog-close:hover {
  transform: translateY(-2px);
}

.nav-links a:hover {
  color: var(--violet-dark);
  transform: translateY(-1px);
}

.button:active,
.mobile-download:active {
  transform: translateY(4px);
  box-shadow: 0 1px 0 var(--ink-strong);
}

.button-secondary:active {
  box-shadow: 0 1px 0 var(--violet-dark);
}

.mode-tabs button:hover {
  transform: translateY(-1px);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 320ms ease-out, transform 320ms ease-out;
}

[data-story-step] {
  transition: opacity 240ms ease-out, transform 240ms ease-out, background-color 240ms ease-out;
}

[data-story-step].is-active {
  background: rgba(255, 200, 64, 0.2);
  transform: translateY(-4px);
}

[data-state="analysing"] .analysis-status::before {
  content: "";
  width: 9px;
  height: 9px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--violet);
  animation: analysis-pulse 700ms ease-in-out infinite alternate;
}

[data-state="evaluated"] .demo-result {
  animation: result-in 300ms ease-out both;
}

[data-boost-improved]:not([hidden]) mark {
  animation: boost-in 300ms ease-out both;
}

.leaderboard-list li.is-moving-up {
  transform: translateY(-60px);
}

.leaderboard-list li.is-moving-down {
  transform: translateY(60px);
}

.rank-demo.has-settled .is-you {
  animation: rank-emphasis 280ms ease-out;
}

.site-dialog[open] .dialog-panel {
  animation: dialog-in 200ms ease-out both;
}

@keyframes analysis-pulse {
  from { opacity: 0.35; transform: scale(0.75); }
  to { opacity: 1; transform: scale(1.15); }
}

@keyframes result-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes boost-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes rank-emphasis {
  50% { transform: scale(1.02); }
}

@keyframes dialog-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  .js [data-reveal],
  .js [data-reveal].is-visible,
  [data-story-step],
  [data-story-step].is-active,
  .leaderboard-list li,
  .leaderboard-list li.is-moving-up,
  .leaderboard-list li.is-moving-down {
    opacity: 1;
    transform: none;
  }

  [data-state="analysing"] .analysis-status::before {
    animation: none;
  }

  .progress-track > span {
    width: var(--progress, 0%);
  }
}

@media (max-width: 420px) {
  .nav-download {
    padding-inline: 13px;
    font-size: 0.82rem;
  }

  .store-link img,
  .store-links-large .store-link img {
    height: 48px;
  }

  .inline-download .store-links,
  .final-download .store-links,
  .footer-stores {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* App-faithful reconstructed components */
.phone-shell {
  position: relative;
  overflow: hidden;
  border: 9px solid var(--ink-strong);
  border-radius: 42px;
  background: var(--canvas);
  box-shadow: var(--shadow-md), inset 0 0 0 1px rgba(255, 255, 255, 0.55);
}

.phone-top {
  display: grid;
  place-items: center;
  height: 34px;
  background: var(--canvas);
}

.phone-top span {
  width: 84px;
  height: 19px;
  border-radius: var(--radius-pill);
  background: var(--ink-strong);
}

.answer-form,
.demo-result {
  padding: clamp(24px, 5vw, 52px);
}

.question-kicker,
.boost-label,
.result-label {
  margin-bottom: 8px;
  color: var(--violet-dark);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.answer-form h3 {
  max-width: 620px;
  margin-bottom: 30px;
  font-size: clamp(1.3rem, 3vw, 2rem);
  line-height: 1.3;
}

.answer-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-strong);
  font-weight: 800;
}

.answer-form textarea {
  width: 100%;
  min-height: 150px;
  resize: vertical;
  padding: 18px;
  border: 2px solid var(--line-strong);
  border-radius: 18px;
  background: var(--surface);
  color: var(--ink);
  line-height: 1.55;
}

.answer-form textarea:focus {
  border-color: var(--violet);
}

.answer-form .button {
  width: 100%;
  margin-top: 8px;
}

.button-press {
  border-radius: 18px;
  background: var(--violet);
  color: white;
}

.answer-form .button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.analysis-status {
  display: grid;
  place-items: center;
  min-height: 0;
  padding-inline: clamp(24px, 5vw, 52px);
  color: var(--violet-dark);
  font-weight: 800;
  text-align: center;
}

[data-state="analysing"] .analysis-status {
  min-height: 72px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
  background: var(--violet-soft);
}

.demo-result {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.score-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: clamp(22px, 5vw, 42px);
  margin-block: 28px 36px;
}

.score-summary p:last-child {
  margin: 0;
}

.score-ring {
  --score-angle: 216deg;
  position: relative;
  display: grid;
  place-items: center;
  width: 132px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(var(--violet) var(--score-angle), var(--line) 0);
}

.score-ring::before {
  content: "";
  position: absolute;
  inset: 11px;
  border-radius: 50%;
  background: var(--canvas);
}

.score-ring strong {
  position: relative;
  z-index: 1;
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-size: 2.4rem;
}

.score-ring small {
  color: var(--muted);
  font-size: 0.9rem;
}

.evaluation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.evaluation-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--canvas);
}

.evaluation-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.evaluation-card.is-positive {
  border-top: 4px solid var(--green);
}

.evaluation-card.is-missing {
  border-top: 4px solid var(--red);
}

.evaluation-card.is-tip {
  border-top: 4px solid var(--amber);
}

.reward {
  margin-top: 30px;
  padding-block: 24px;
  border-block: 1px solid var(--line);
}

.reward > div:first-child,
.chapter-progress > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 10px;
}

.reward strong {
  color: var(--green);
}

.progress-track {
  position: relative;
  width: 100%;
  height: 12px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--line);
}

.progress-track > span {
  display: block;
  width: var(--progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--violet), var(--pink));
}

.rank-demo {
  margin-top: 30px;
}

.rank-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.rank-heading h4 {
  margin: 0;
}

.rank-heading span {
  color: var(--muted);
  font-size: 0.78rem;
}

.leaderboard-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.leaderboard-list li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  min-height: 52px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--canvas);
}

.leaderboard-list li.is-you {
  border-color: var(--violet);
  background: var(--violet-soft);
  color: var(--violet-dark);
}

.rank-number {
  font-weight: 850;
}

.demo-reset {
  display: block;
  margin: 6px auto 22px;
}

.feedback-preview {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 28px;
  margin-top: 32px;
  padding: 28px 0;
  border-block: 1px solid var(--line);
}

.mini-score {
  display: grid;
  place-items: baseline center;
  width: 96px;
  padding: 18px 10px;
  border-radius: 24px;
  background: var(--violet-soft);
  color: var(--violet-dark);
}

.mini-score strong {
  font-family: var(--display-font);
  font-size: 2.3rem;
  line-height: 1;
}

.feedback-preview ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feedback-preview li {
  position: relative;
  padding-left: 22px;
}

.status-dot {
  position: absolute;
  top: 0.55em;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.status-dot.is-positive {
  background: var(--green);
}

.status-dot.is-missing {
  background: var(--red);
}

.status-dot.is-tip {
  background: var(--amber);
}

.boost-panel {
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--canvas);
  box-shadow: var(--shadow-sm);
}

.boost-answer {
  min-height: 116px;
  margin-bottom: 28px;
  padding: 22px;
  border-left: 4px solid var(--violet);
  border-radius: 0 16px 16px 0;
  background: var(--surface);
  color: var(--ink-strong);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.65;
}

.boost-answer mark {
  padding: 2px 4px;
  border-radius: 5px;
  background: var(--yellow);
  color: var(--ink-strong);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.boost-panel .assistive-status {
  min-height: 1.4em;
  margin: 16px 0 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-block: 36px;
  padding-block: 26px;
  border-block: 1px solid var(--line);
}

.metric-grid div {
  display: grid;
  gap: 4px;
}

.metric-grid strong {
  color: var(--ink-strong);
  font-family: var(--display-font);
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.metric-grid span:last-child {
  color: var(--muted);
  font-size: 0.84rem;
}

.skill-list {
  display: grid;
  gap: 20px;
}

.skill-list > div {
  display: grid;
  gap: 8px;
}

.skill-list > div > span {
  font-weight: 750;
}

.chapter-progress {
  margin-block: 34px;
}

.standalone-rank {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

@media (max-width: 767px) {
  .phone-shell {
    border-width: 6px;
    border-radius: 30px;
  }

  .answer-form,
  .demo-result {
    padding: 24px 18px;
  }

  .score-summary,
  .feedback-preview {
    grid-template-columns: 1fr;
  }

  .score-ring,
  .mini-score {
    justify-self: center;
  }

  .evaluation-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric-grid div {
    grid-template-columns: 1fr auto;
    align-items: baseline;
  }

  .rank-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .leaderboard-list li {
    grid-template-columns: 36px 1fr auto;
    padding-inline: 10px;
    font-size: 0.88rem;
  }

  .boost-answer {
    min-height: 0;
  }
}