:root {
  --bg: #f5f5f7;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --surface: #ffffff;
  --surface-hover: #f7f8fa;
  --max: 1120px;
  --gutter: 24px;
  --gutter-mobile: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

main {
  padding: 1rem;
}

section {
  margin: 1rem auto;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
}

.lang-switch-wrap {
  margin: 0 auto;
}

.lang-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  gap: 0;
  font-size: 13px;
  margin-top: 4px;
  margin-left: auto;
  width: 96px;
  padding: 2px;
  border-radius: 999px;
  /* border: 1px solid rgba(255, 255, 255, 0.75); */
  background: linear-gradient(180deg, #f7f8fb 0%, #e9edf3 100%);
  box-shadow:
  inset 0 1px 0 rgba(255, 255, 255, 0.95),
  inset 0 -1px 0 rgba(0, 0, 0, 0.08),
  0 2px 6px rgba(0, 0, 0, 0.14)
}

.lang-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  width: 100%;
  height: 28px;
  border-radius: 0;
  color: #5b6574;
  font-weight: 700;
  padding: 0;
}

.lang-link:first-of-type {
  border-top-left-radius: 999px;
  border-bottom-left-radius: 999px;
}

.lang-link:last-of-type {
  border-top-right-radius: 999px;
  border-bottom-right-radius: 999px;
}

.lang-link + .lang-link {
  border-left: 1px solid rgba(0, 0, 0, 0.12);
}

.lang-link.active {
  color: #1b2230;
  background: linear-gradient(180deg, #e4e7ed 0%, #d5d9e1 100%);
  box-shadow:
    inset 0 2px 3px rgba(0, 0, 0, 0.16),
    inset 0 -1px 0 rgba(255, 255, 255, 0.45),
    0 1px 1px rgba(255, 255, 255, 0.6);
}

.lang-sep {
  display: none;
}

.lang-link:hover {
  text-decoration: none;
  color: #2c3443;
}

@media (prefers-color-scheme: dark) {
  .lang-switch {
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: linear-gradient(180deg, #22262f 0%, #171b22 100%);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 -1px 0 rgba(0, 0, 0, 0.4),
      0 10px 24px rgba(0, 0, 0, 0.35);
  }

  .lang-link {
    color: #a7afbd;
  }

  .lang-link + .lang-link {
    border-left: 1px solid rgba(255, 255, 255, 0.16);
  }

  .lang-link.active {
    color: #f5f7fb;
    background: linear-gradient(180deg, #3a3f49 0%, #2a2f38 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
      /* inset 0 2px 3px rgba(0, 0, 0, 0.42), */
      inset 0 -1px 0 rgba(255, 255, 255, 0.08),
      0 1px 1px rgba(255, 255, 255, 0.06);
    transform: translateY(1px);
  }
}

.hero {
  padding: clamp(72px, 10vw, 1rem) 0 clamp(68px, 9vw, 1rem);
  text-align: center;
  background: var(--bg);
}

.app-lockup {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background-color: transparent;
  background-image: image-set(
    url("/assets/french-numbers/app-icon.webp") type("image/webp"),
    url("/assets/french-numbers/app-icon.png") type("image/png")
  );
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow:
    0 20px 35px rgba(0, 0, 0, 0.18),
    0 4px 10px rgba(0, 0, 0, 0.08);
}

.eyebrow {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  color: #007aff;
  letter-spacing: -0.01em;
}

.hero h1 {
  margin: 18px auto 14px;
  max-width: 13ch;
  font-size: clamp(46px, 8.8vw, 86px);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.lead {
  margin: 0 auto 24px;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.38;
}

.hero-cta {
  display: inline-block;
  border-radius: 999px;
  padding: 12px 24px;
  background: #007aff;
  color: #ffffff;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.hero-cta:hover {
  text-decoration: none;
  filter: brightness(0.95);
}

/* .feature {
  padding: 10px;
} */

.feature-pair {
  padding: 10px 0;
}

.feature-pair-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
}

.section-tint {
  background: transparent;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(24px, 4vw, 72px);
  background: var(--surface);
  border-radius: 34px;
  padding: clamp(26px, 4vw, 54px);
}

.feature-grid-stack {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: 12px;
  min-height: 0;
  align-items: start;
  overflow: hidden;
  padding-bottom: 0;
}

.feature-grid.reverse .feature-copy {
  order: 2;
}

.feature-grid.reverse .shot {
  order: 1;
}

.feature-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(34px, 5.2vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.feature-copy p {
  margin: 0;
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.45;
  color: var(--muted);
  max-width: 36ch;
}

.shot {
  margin: 0;
}

.feature-grid-stack .shot {
  margin-top: 0;
  align-self: stretch;
  height: clamp(360px, 30vw, 520px);
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.shot-image {
  width: 100%;
  max-width: 560px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.feature-grid-stack .shot-image {
  width: min(380px, 80%);
  max-width: none;
  margin: 0 auto;
}

.cta {
  padding: clamp(72px, 10vw, 126px) 0 clamp(72px, 10vw, 126px);
  text-align: center;
}

.cta h2 {
  margin: 0;
  font-size: clamp(40px, 6.2vw, 68px);
  line-height: 1.03;
  letter-spacing: -0.03em;
}

.cta p {
  margin: 12px auto 0;
  max-width: 48ch;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.appstore-badge {
  display: inline-block;
  margin-top: 18px;
}

.appstore-badge img {
  display: block;
  height: auto;
}

.other-apps {
  padding: 0 0 clamp(46px, 7vw, 72px);
}

.other-apps h2 {
  margin: 0 0 14px;
  text-align: center;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.02em;
}

.other-apps-grid {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border-radius: 20px;
  border: 1px solid var(--line);
  padding: 14px;
  width: fit-content;
  margin: 0 auto;
}

.other-app-card {
  display: block;
  border-radius: 14px;
  padding: 10px;
}

.other-app-card:hover {
  text-decoration: none;
  background: var(--surface-hover);
}

.other-app-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.other-app-icon {
  border-radius: 12px;
  box-shadow:
    0 10px 18px rgba(0, 0, 0, 0.15),
    0 2px 4px rgba(0, 0, 0, 0.08);
}

.other-app-name {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
}

.other-app-desc {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 16px;
}

.other-app-store {
  padding-right: 6px;
}

.other-app-store img {
  display: block;
  height: auto;
}

.principles {
  padding: clamp(62px, 9vw, 108px) 0;
  background: transparent;
  color: var(--fg);
}

.principles h2 {
  margin: 0 0 20px;
  text-align: center;
  font-size: clamp(34px, 5.2vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.principle-card {
  padding: 24px;
  border-radius: 22px;
  background: linear-gradient(160deg, #0a84ff 0%, #007aff 55%, #0057d8 100%);
}

.principle-card h3 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.3vw, 30px);
  letter-spacing: -0.01em;
  color: #ffffff;
}

.principle-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.45;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 0 24px 24px;
}

.dot {
  padding: 0 8px;
}

.progress-mobile {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --fg: #f5f5f7;
    --muted: #a1a1a6;
    --line: #3a3a3c;
    --surface: #1c1c1e;
    --surface-hover: #2a2a2d;
  }

  .hero-cta {
    box-shadow: 0 8px 22px rgba(0, 122, 255, 0.32);
  }

  .app-icon {
    box-shadow:
      0 20px 35px rgba(0, 0, 0, 0.42),
      0 4px 10px rgba(0, 0, 0, 0.28);
  }

  .principle-card {
    background: linear-gradient(160deg, #1273e6 0%, #0a63d7 55%, #0047b3 100%);
  }
}

@media (max-width: 900px) {
  .lang-switch {
    margin-top: 0;
    font-size: 13px;
  }

  .progress-desktop {
    display: none;
  }

  .progress-mobile {
    display: block;
  }

  .hero {
    padding: 52px 0 56px;
  }

  .hero h1 {
    font-size: clamp(34px, 10.5vw, 54px);
    max-width: 12ch;
    margin: 14px auto 10px;
  }

  .lead {
    font-size: clamp(17px, 4.4vw, 21px);
    margin-bottom: 18px;
  }

  .hero-cta {
    font-size: 18px;
    padding: 10px 20px;
  }

  .feature-pair-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .feature-grid.reverse {
    grid-template-columns: 1fr;
  }

  .feature-grid.reverse .feature-copy,
  .feature-grid.reverse .shot {
    order: unset;
  }

  .feature-copy p {
    max-width: none;
  }

  .feature-grid {
    border-radius: 26px;
    padding: 22px;
    gap: 16px;
  }

  .feature-grid-stack {
    min-height: 0;
    padding-bottom: 0;
  }

  .feature-grid-stack .shot {
    height: clamp(405px, 30vw, 520px);
  }

  .feature-grid-stack .shot-image {
    width: min(320px, 100%);
  }

  .eyebrow {
    font-size: 26px;
  }

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

  .other-apps-grid {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .other-app-store {
    padding: 0 10px 10px;
  }
}