:root {
  color-scheme: light dark;
  --navy: #063b4b;
  --navy-2: #0a5164;
  --mint: #72d5b0;
  --mint-soft: #e7f7f1;
  --gold: #ffb842;
  --coral: #f48572;
  --background: #f3f7f5;
  --surface: #ffffff;
  --surface-soft: #edf5f2;
  --text: #12323d;
  --muted: #60767e;
  --border: #dce8e4;
  --header: rgb(243 247 245 / 92%);
  --shadow: 0 24px 70px rgb(20 68 75 / 13%);
  --section-space: clamp(5.5rem, 9vw, 9rem);
  --app-content-ratio: 1280 / 752;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--background);
  color: var(--text);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img, video { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 3px solid var(--mint); outline-offset: 4px; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: .7rem 1rem;
  border-radius: .7rem;
  background: var(--navy);
  color: white;
  transform: translateY(-180%);
}
.skip-link:focus { transform: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: var(--header);
  backdrop-filter: blur(18px);
}
.header-inner {
  width: min(1180px, calc(100% - 2.5rem));
  min-height: 4.6rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}
.brand, .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  width: max-content;
  color: var(--text);
  text-decoration: none;
  font-family: ui-rounded, "SF Pro Rounded", Inter, sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -.05em;
}
.brand img { width: 2.55rem; height: 2.55rem; object-fit: contain; }
.brand span span { color: var(--mint); }
.primary-nav { display: flex; align-items: center; justify-content: center; gap: clamp(1rem, 2.5vw, 2.2rem); }
.primary-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 700;
}
.primary-nav a:hover { color: var(--navy-2); }
.language-switcher {
  justify-self: end;
  display: inline-flex;
  padding: .2rem;
  border: 1px solid var(--border);
  border-radius: .7rem;
  background: var(--surface);
}
.language-switcher button {
  min-width: 2.35rem;
  min-height: 2rem;
  padding: 0 .55rem;
  border: 0;
  border-radius: .5rem;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: .72rem;
  font-weight: 800;
}
.language-switcher button[aria-pressed="true"] { background: var(--navy); color: white; }

.section, .section-narrow, .site-footer {
  width: min(1180px, calc(100% - 2.5rem));
  margin-inline: auto;
}
.section { padding-block: var(--section-space); }
.section-narrow { margin-block: 0; }
.eyebrow {
  margin: 0 0 .9rem;
  color: var(--navy-2);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0; font-family: ui-rounded, "SF Pro Rounded", Inter, sans-serif; letter-spacing: -.045em; line-height: 1.06; }
h1 { font-size: clamp(3.2rem, 6vw, 6.2rem); }
h1 span, h1 strong { display: block; }
h1 strong { color: var(--mint); }
h2 { max-width: 15ch; font-size: clamp(2.5rem, 5vw, 4.8rem); }
h3 { font-size: clamp(2rem, 3.4vw, 3.55rem); }
p { margin-top: 0; }

.hero {
  min-height: calc(100vh - 4.6rem);
  display: grid;
  grid-template-columns: minmax(0, .68fr) minmax(0, 1.32fr);
  grid-template-areas:
    "copy media"
    "footer footer";
  align-items: center;
  gap: clamp(2.5rem, 4vw, 4.5rem);
  padding-top: clamp(4.5rem, 8vw, 7.5rem);
}
.hero-copy { grid-area: copy; }
.hero-lead { max-width: 38rem; margin: 1.8rem 0 2rem; color: var(--muted); font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.hero-actions, .download-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: .8rem 1.25rem;
  border: 1px solid transparent;
  border-radius: .85rem;
  text-decoration: none;
  font-size: .86rem;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--gold); color: #332100; box-shadow: 0 12px 28px rgb(255 184 66 / 28%); }
.button.secondary { border-color: var(--border); background: var(--surface); color: var(--text); }
.button.secondary:hover { border-color: var(--mint); }
.button.on-dark { border-color: rgb(255 255 255 / 42%); color: white; }
.hero-footer {
  grid-area: footer;
  display: grid;
  grid-template-columns: minmax(0, .68fr) minmax(0, 1.32fr);
  align-items: center;
  gap: clamp(2.5rem, 4vw, 4.5rem);
}
.hero-footer .hero-actions { flex-wrap: nowrap; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.hero-facts div { padding: 1rem .85rem; border-right: 1px solid var(--border); }
.hero-facts div:first-child { padding-left: 0; }
.hero-facts div:last-child { border-right: 0; }
.hero-facts dt { color: var(--muted); font-size: .67rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.hero-facts dd { margin: .25rem 0 0; font-size: .85rem; font-weight: 800; }
.hero-media {
  grid-area: media;
  position: relative;
  z-index: 0;
  align-self: start;
  margin: 3.2rem 0 0;
  isolation: isolate;
  transform: perspective(1150px) rotateY(-14deg) rotateX(2.5deg) rotateZ(.8deg) scale(1.045);
  transform-origin: center;
  transform-style: preserve-3d;
}
.hero-media::before {
  position: absolute;
  z-index: -2;
  inset: 8% 1%;
  border-radius: 40%;
  background: linear-gradient(135deg, var(--mint), var(--navy-2), var(--gold));
  filter: blur(64px);
  opacity: .34;
  content: "";
}
.hero-media::after {
  position: absolute;
  z-index: -1;
  top: 2.5%;
  right: -.65rem;
  bottom: 2.5%;
  width: 1rem;
  border: 1px solid var(--border);
  border-left: 0;
  border-radius: 0 1.2rem 1.2rem 0;
  background: linear-gradient(90deg, var(--surface-soft), color-mix(in srgb, var(--navy) 68%, black));
  box-shadow: 1rem 1.5rem 3rem rgb(0 0 0 / 24%);
  content: "";
}
.app-window {
  position: relative;
  z-index: 0;
  overflow: hidden;
  aspect-ratio: var(--app-content-ratio);
  border: 1px solid var(--border);
  border-radius: 1.35rem;
  background: var(--surface);
  box-shadow: 0 2.8rem 6.5rem rgb(0 0 0 / 28%), var(--shadow);
  transform: translateZ(18px);
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
}
.hero-media figcaption, .feature-media figcaption { margin-top: .8rem; color: var(--muted); font-size: .75rem; }

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: var(--surface-soft);
  overflow: hidden;
}
.trust-strip article { min-height: 12rem; padding: 2rem; border-right: 1px solid var(--border); }
.trust-strip article:last-child { border-right: 0; }
.index, .chapter-number { display: block; color: var(--mint); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: .76rem; font-weight: 800; letter-spacing: .08em; }
.trust-strip h2 { margin: 2.25rem 0 .6rem; font-size: 1.05rem; letter-spacing: -.02em; }
.trust-strip p { margin: 0; color: var(--muted); font-size: .82rem; }

.manifesto { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: clamp(3rem, 8vw, 8rem); }
.manifesto-copy { padding-bottom: .3rem; color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.18rem); }
.manifesto-copy p:last-child { margin-bottom: 0; }
.feature-heading { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 3rem; }
.feature-heading > p { margin: 0; color: var(--muted); }
.feature-index { display: grid; grid-template-columns: repeat(3, 1fr); margin: 4rem 0 8rem; padding: 0; border-top: 1px solid var(--border); list-style: none; }
.feature-index li { border-bottom: 1px solid var(--border); }
.feature-index li:not(:nth-child(3n)) { border-right: 1px solid var(--border); }
.feature-index a { min-height: 5.5rem; padding: 1.2rem; display: flex; align-items: center; gap: 1rem; text-decoration: none; }
.feature-index a:hover { background: var(--surface-soft); }
.feature-index span { color: var(--mint); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: .7rem; }
.feature-index strong { font-size: .92rem; }
.feature-chapter { min-height: 38rem; padding-block: clamp(4rem, 7vw, 7rem); display: grid; grid-template-columns: minmax(15rem, .72fr) minmax(0, 1.28fr); align-items: center; gap: clamp(3rem, 8vw, 8rem); border-top: 1px solid var(--border); }
.feature-chapter.reverse { grid-template-columns: minmax(0, 1.28fr) minmax(15rem, .72fr); }
.feature-chapter.reverse .chapter-copy { order: 2; }
.feature-chapter.reverse .feature-media { order: 1; }
.chapter-number { margin-bottom: 4rem; }
.chapter-copy h3 { max-width: 12ch; }
.chapter-copy > p:last-child { max-width: 36rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1rem; }
.feature-media { margin: 0; }
.feature-media video {
  width: 100%;
  aspect-ratio: var(--app-content-ratio);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  background: #071b23;
  box-shadow: var(--shadow);
  object-fit: cover;
  object-position: center bottom;
}

.technical { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.technical-list { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; border-top: 1px solid var(--border); }
.technical-list div { padding: 1.6rem 1.2rem 1.8rem 0; border-bottom: 1px solid var(--border); }
.technical-list div:nth-child(odd) { border-right: 1px solid var(--border); }
.technical-list div:nth-child(even) { padding-left: 1.2rem; }
.technical-list dt { margin-bottom: .55rem; font-weight: 800; }
.technical-list dd { margin: 0; color: var(--muted); font-size: .84rem; }

.download {
  margin-bottom: 5rem;
  padding: clamp(2.2rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 3rem;
  border-radius: 1.5rem;
  background: var(--navy);
  color: white;
}
.download .eyebrow { color: var(--mint); }
.download h2 { max-width: 13ch; font-size: clamp(2.3rem, 4vw, 4.2rem); }
.download p:not(.eyebrow) { max-width: 46rem; margin: 1rem 0 0; color: #c5dce2; }
.download-actions { justify-content: flex-end; }
.site-footer { min-height: 7rem; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .76rem; }
.site-footer > a:last-child { justify-self: end; }
.footer-brand { font-size: 1rem; }
.footer-brand img { width: 2rem; height: 2rem; }
.site-footer p { margin: 0; }
.noscript { padding: 1rem; text-align: center; color: var(--muted); }

.reveal { opacity: 1; transition: opacity 600ms ease; }
.reveal-ready .reveal { opacity: 0; }
.reveal-ready .reveal.is-visible { opacity: 1; }

@media (prefers-color-scheme: dark) {
  :root {
    --background: #071b23;
    --surface: #0d2a34;
    --surface-soft: #0b2530;
    --text: #e9f5f1;
    --muted: #9ab2b8;
    --border: #234650;
    --header: rgb(7 27 35 / 92%);
    --shadow: 0 24px 70px rgb(0 0 0 / 32%);
  }
  .primary-nav a:hover, .eyebrow { color: var(--mint); }
  .button.secondary { background: var(--surface); }
  .button.primary { color: #332100; }
  .language-switcher button[aria-pressed="true"] { background: var(--mint); color: #062a35; }
}

@media (min-width: 1500px) {
  .hero {
    width: min(1400px, calc(100% - 2.5rem));
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
  }
  .hero-copy { padding-left: 110px; }
  .hero-footer { grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); }
  .hero-footer .hero-facts { margin-left: 110px; }
}

@media (min-width: 981px) and (max-width: 1200px) {
  .hero-media {
    transform: perspective(1150px) rotateY(-11deg) rotateX(2deg) rotateZ(.5deg) scale(.98);
    transform-origin: right center;
  }
  .hero-media::after { right: -.7rem; width: 1rem; }
}

@media (max-width: 980px) {
  .header-inner { grid-template-columns: auto 1fr auto; gap: 1rem; }
  .primary-nav { justify-content: flex-end; }
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "media"
      "footer";
  }
  .hero-copy { max-width: 46rem; }
  .hero-media { align-self: auto; margin-top: 0; transform: none; }
  .hero-media::after { display: none; }
  .hero-footer { grid-template-columns: 1fr; gap: 2rem; }
  .hero-footer .hero-actions { flex-wrap: wrap; }
  .trust-strip { grid-template-columns: repeat(2, 1fr); }
  .trust-strip article:nth-child(2) { border-right: 0; }
  .trust-strip article:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .manifesto, .feature-heading, .technical { grid-template-columns: 1fr; }
  .manifesto-copy, .feature-heading > p { max-width: 44rem; }
  .feature-chapter, .feature-chapter.reverse { grid-template-columns: 1fr; min-height: auto; gap: 2.5rem; }
  .feature-chapter.reverse .chapter-copy, .feature-chapter.reverse .feature-media { order: initial; }
  .chapter-number { margin-bottom: 2.5rem; }
  .chapter-copy h3 { max-width: 18ch; }
  .download { grid-template-columns: 1fr; }
  .download-actions { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .site-header { position: relative; }
  .header-inner { width: min(100% - 1.5rem, 42rem); grid-template-columns: 1fr auto; padding-block: .65rem; }
  .primary-nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; padding-bottom: .2rem; }
  .language-switcher { grid-column: 2; grid-row: 1; }
  .section, .section-narrow, .site-footer { width: min(100% - 1.5rem, 42rem); }
  .section { padding-block: clamp(4.5rem, 16vw, 6.5rem); }
  .hero { padding-top: 4rem; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts div, .hero-facts div:first-child { padding: .8rem 0; border-right: 0; border-bottom: 1px solid var(--border); }
  .hero-facts div:last-child { border-bottom: 0; }
  .trust-strip { grid-template-columns: 1fr; }
  .trust-strip article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .trust-strip article:last-child { border-bottom: 0; }
  .trust-strip h2 { margin-top: 1.2rem; }
  .feature-index { grid-template-columns: 1fr; margin-bottom: 5rem; }
  .feature-index li:not(:nth-child(3n)) { border-right: 0; }
  .technical-list { grid-template-columns: 1fr; }
  .technical-list div:nth-child(odd) { border-right: 0; }
  .technical-list div:nth-child(even) { padding-left: 0; }
  .site-footer { padding-block: 2rem; grid-template-columns: 1fr; gap: .8rem; }
  .site-footer > a:last-child { justify-self: start; }
}

@media (max-width: 480px) {
  h1 { font-size: clamp(3rem, 16vw, 4.4rem); }
  .hero-actions, .download-actions { display: grid; }
  .button { width: 100%; }
  .app-window, .feature-media video { border-radius: .8rem; }
  .download { padding: 1.5rem; border-radius: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; }
  .button:hover { transform: none; }
}