:root {
  --bg: #eef4ff;
  --surface: rgba(255, 255, 255, 0.78);
  --text: #20314d;
  --muted: #64748f;
  --accent-deep: #0b63ca;
  --shadow-soft: 0 24px 70px rgba(33, 68, 124, 0.12);
  --shadow-card: 0 18px 50px rgba(28, 50, 94, 0.1);
  --shadow-deep: 0 28px 80px rgba(11, 20, 42, 0.32);
  --radius-xl: 36px;
  --max-width: 1200px;
  --page-gutter: clamp(24px, 4vw, 48px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(71, 155, 255, 0.18), transparent 32%),
    radial-gradient(circle at 85% 12%, rgba(0, 108, 255, 0.16), transparent 24%),
    linear-gradient(180deg, #f7faff 0%, #eef4ff 48%, #f9fbff 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.65) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.65) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 78%);
  opacity: 0.25;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(100%, calc(var(--max-width) + (var(--page-gutter) * 2)));
  margin: 0 auto;
  padding: 64px var(--page-gutter) 72px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.site-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

.site-nav a,
.footer-nav a,
.text-link {
  position: relative;
  transition: color 180ms ease;
}

.site-nav a::after,
.footer-nav a::after,
.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: rgba(11, 99, 202, 0.28);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.footer-nav a:hover,
.text-link:hover {
  color: var(--accent-deep);
}

.site-nav a[aria-current="page"],
.footer-nav a[aria-current="page"] {
  color: var(--accent-deep);
  font-weight: 700;
}

.site-nav a:hover::after,
.footer-nav a:hover::after,
.text-link:hover::after {
  transform: scaleX(1);
}

.site-nav a[aria-current="page"]::after,
.footer-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  background: rgba(11, 99, 202, 0.56);
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.38),
    0 12px 30px rgba(42, 70, 120, 0.14);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.contact-button:hover {
  background: rgba(255, 255, 255, 0.46);
  border-color: rgba(255, 255, 255, 0.78);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.46),
    0 16px 32px rgba(42, 70, 120, 0.18);
  transform: translateY(-1px);
}

.contact-button:focus-visible {
  outline: 2px solid rgba(11, 99, 202, 0.5);
  outline-offset: 3px;
}

.hero,
.feature-grid,
.cta-banner {
  position: relative;
  z-index: 1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand--hero {
  margin-bottom: 18px;
}

.brand__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(31, 132, 234, 0.22);
}

.brand__text {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 1.25rem;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 18px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--accent-deep);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 540px);
  align-items: center;
  gap: 40px;
  padding: 52px 0 96px;
}

.hero__copy {
  max-width: 600px;
  display: grid;
  gap: 28px;
}

.hero--seo {
  padding-top: 28px;
  padding-bottom: 28px;
}

.hero h1,
.feature-card__copy h2,
.cta-banner__copy h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.45rem, 4.4vw, 4.2rem);
}

.hero__lede,
.feature-card__copy p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.03rem;
}

.hero__lede {
  max-width: 54ch;
  margin: 0;
}

.hero__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  margin-top: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.keyword-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 0;
}

.keyword-pills span {
  padding: 10px 14px;
  border: 1px solid rgba(90, 120, 168, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.24);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 10px 28px rgba(42, 70, 120, 0.04);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.store-badge {
  width: auto;
  height: 56px;
  filter: drop-shadow(0 12px 22px rgba(20, 31, 61, 0.18));
}

.store-badge-link {
  display: inline-flex;
  width: fit-content;
}

.hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  padding: 8px 0;
}

.hero-shot {
  position: relative;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
}

.hero-shot img,
.feature-card__media img,
.cta-banner__icon {
  opacity: var(--image-opacity, 0);
  transform: scale(var(--image-scale, 1.12));
  transform-origin: center center;
  will-change: transform;
  transition:
    opacity 380ms ease,
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-shot img,
.page-hero__media img,
.feature-card__media img {
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.hero-shot img {
  max-height: 680px;
}

.feature-grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.content-section {
  margin-top: 84px;
}

.content-section--intro {
  margin-top: 56px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(2.1rem, 4vw, 3.35rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.section-heading p:last-child {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.72;
  font-size: 1rem;
}

.benefit-grid,
.topic-grid {
  display: grid;
  gap: 20px;
}

.benefit-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 56px;
}

.topic-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.benefit-card,
.topic-card,
.page-copy,
.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.66);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
}

.benefit-card,
.topic-card,
.page-copy {
  padding: 24px;
}

.benefit-card {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.benefit-card h3,
.topic-card h3,
.page-copy h2,
.faq-item summary {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.35;
}

.benefit-card p,
.topic-card p,
.page-copy p,
.page-copy li,
.faq-item p {
  color: var(--muted);
  line-height: 1.72;
}

.benefit-card p,
.topic-card p,
.faq-item p {
  margin: 12px 0 0;
}

.topic-card {
  display: block;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  border-color: rgba(11, 99, 202, 0.18);
  box-shadow: 0 24px 48px rgba(28, 50, 94, 0.14);
}

.faq-list {
  display: grid;
  gap: 16px;
}

.faq-item {
  padding: 20px 24px;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin-top: 14px;
}

.site-footer {
  display: grid;
  gap: 18px;
  margin-top: 72px;
  padding-top: 24px;
  border-top: 1px solid rgba(144, 164, 198, 0.22);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  align-items: center;
  gap: 36px;
  padding: 44px 0 28px;
}

.page-hero__copy h1 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(2.4rem, 4.4vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.page-hero__copy p {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.72;
}

.page-hero__media img {
  max-height: 620px;
  margin-inline: auto;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.page-copy ul {
  margin: 14px 0 0;
  padding-left: 18px;
}

.page-copy--legal {
  max-width: 860px;
  margin: 0 auto;
}

.page-copy--legal h2,
.page-copy--legal h3 {
  margin: 28px 0 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  line-height: 1.08;
}

.page-copy--legal h2 {
  font-size: clamp(1.65rem, 3vw, 2.2rem);
}

.page-copy--legal h3 {
  font-size: 1.15rem;
}

.page-copy--legal p {
  margin: 14px 0 0;
}

.page-copy--legal ul {
  margin: 14px 0 0;
}

.page-copy li + li {
  margin-top: 8px;
}


.feature-card {
  display: grid;
  gap: 28px;
  align-items: center;
  padding: 32px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.68);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-card);
}

.feature-card--bare {
  padding: 8px 0;
  border: 0;
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
}

.feature-card--wide {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
}

.feature-card--flashcards {
  grid-template-columns: minmax(220px, 280px) minmax(420px, 520px) minmax(220px, 280px);
  padding: 28px;
}

.feature-card--flashcards .feature-card__copy {
  max-width: 520px;
  margin: 0 auto;
}

.feature-card--flashcards .feature-card__copy h2 {
  font-size: clamp(2.45rem, 3.2vw, 3.3rem);
  line-height: 0.98;
}

.feature-card--harmony {
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 40px;
  padding: 36px 40px;
}

.feature-card--harmony .feature-card__media {
  justify-content: flex-start;
}

.feature-card--harmony .feature-card__media img {
  max-height: 480px;
}

.feature-card--harmony .feature-card__copy {
  max-width: 560px;
}

.feature-card--dark {
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  color: #eef4ff;
  background:
    radial-gradient(circle at top left, rgba(46, 110, 220, 0.28), transparent 34%),
    linear-gradient(135deg, #0f172a 0%, #111b35 52%, #1d2950 100%);
  border-color: rgba(162, 189, 255, 0.16);
  box-shadow: var(--shadow-deep);
}

.feature-card--dark .eyebrow {
  color: #9bbdff;
}

.feature-card--dark h2 {
  color: #f6f8ff;
}

.feature-card--dark .feature-card__copy p:last-child {
  color: rgba(228, 235, 255, 0.84);
}

.feature-card--tuner {
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 40px;
}

.feature-card--tuner .feature-card__media {
  justify-content: flex-start;
}

.feature-card--tuner .feature-card__media img {
  max-height: 480px;
}

.feature-card--tuner .feature-card__copy {
  max-width: 560px;
}

.feature-card__copy h2 {
  font-size: clamp(2.15rem, 4vw, 3.4rem);
  margin-bottom: 14px;
}

.feature-card__copy p:last-child {
  margin: 0;
}

.feature-card__media {
  display: flex;
  justify-content: center;
}

.feature-card__media img {
  max-height: 480px;
}

.hero-shot img {
  max-height: 680px;
}

.cta-banner {
  margin-top: 112px;
  padding: 40px 0 28px;
}

.cta-banner__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: min(100%, 640px);
  margin: 0 auto;
  text-align: center;
}

.cta-banner__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  box-shadow: 0 14px 28px rgba(31, 132, 234, 0.18);
}

.cta-banner__copy {
  display: grid;
  gap: 10px;
  justify-items: center;
  width: 100%;
}

.cta-banner__copy h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  line-height: 0.98;
  max-width: none;
}

.cta-banner__copy p {
  max-width: 32rem;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.store-badge--cta {
  height: 56px;
  margin-top: 6px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(56px) scale(0.96);
  filter: blur(10px);
  transition:
    opacity 420ms ease,
    transform 560ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 560ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

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

.hero-shot.is-visible img,
.feature-card.is-visible .feature-card__media img,
.cta-banner.is-visible .cta-banner__icon {
  --image-opacity: 1;
  --image-scale: 1;
}

@media (max-width: 920px) {
  .page-hero,
  .hero,
  .feature-card--wide,
  .feature-card--flashcards,
  .feature-card--harmony,
  .feature-card--dark,
  .feature-card--tuner {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
    align-items: center;
  }

  .site-nav,
  .footer-nav {
    justify-content: center;
  }

  .hero {
    gap: 28px;
  }

  .hero__copy {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
  }

  .hero__visual {
    max-width: 760px;
    margin: 0 auto;
    width: 100%;
  }

  .hero-shot {
    max-width: 320px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 8vw, 3.8rem);
  }

  .hero__lede {
    margin-inline: auto;
  }

  .brand--hero {
    justify-content: center;
    width: 100%;
  }

  .hero__meta {
    align-items: center;
    width: 100%;
  }

  .keyword-pills,
  .hero__actions {
    justify-content: center;
  }

  .feature-card__media img,
  .feature-card--harmony .feature-card__media img {
    margin-inline: auto;
  }

  .section-heading,
  .page-hero__copy,
  .site-footer {
    text-align: center;
  }

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

@media (max-width: 760px) {
  .page-shell {
    padding: 36px var(--page-gutter) 44px;
  }

  .hero {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .content-section {
    margin-top: 64px;
  }

  .cta-banner {
    margin-top: 88px;
    padding: 24px 0 16px;
  }

  .cta-banner__inner,
  .cta-banner__copy {
    width: 100%;
  }

  .cta-banner__copy h2 {
    font-size: clamp(2rem, 8vw, 2.9rem);
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.3rem, 10vw, 3.6rem);
  }

  .feature-card__copy,
  .cta-banner__copy {
    text-align: center;
  }

  .feature-card__copy,
  .feature-card__media {
    order: initial;
  }

  .feature-card__copy {
    order: 1;
    margin-inline: auto;
  }

  .feature-card__media {
    order: 2;
    justify-content: center;
  }

  .feature-card__copy p:last-child,
  .cta-banner__copy p {
    margin-inline: auto;
  }

  .hero__visual {
    padding: 22px 18px 18px;
  }

  .feature-card__media img,
  .feature-card--harmony .feature-card__media img,
  .feature-card--tuner .feature-card__media img {
    max-height: 420px;
  }

  .hero-shot {
    max-width: 280px;
  }

  .hero-shot img {
    max-height: 520px;
    width: 100%;
  }

  .feature-card {
    padding: 28px 24px;
    border-radius: 28px;
  }

  .benefit-card,
  .topic-card,
  .page-copy,
  .faq-item {
    border-radius: 24px;
  }

  .feature-card--flashcards,
  .feature-card--harmony {
    padding: 28px 24px;
  }

  .feature-card--flashcards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .feature-card--flashcards .feature-card__copy {
    grid-column: 1 / -1;
  }

  .feature-card--flashcards .feature-card__media {
    width: 100%;
  }

  .feature-card--flashcards .feature-card__media img {
    max-height: 320px;
  }

  .feature-card__copy h2 {
    font-size: clamp(1.95rem, 8vw, 2.7rem);
  }

  .store-badge,
  .store-badge--cta {
    height: 48px;
  }

  .page-hero {
    padding-top: 28px;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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