:root {
  color-scheme: light dark;
  --background: #080b12;
  --surface: #101827;
  --surface-variant: #1a2235;
  --foreground: #f6f7fb;
  --muted: #a5b2c8;
  --outline: rgba(90, 106, 130, 0.56);
  --outline-soft: rgba(90, 106, 130, 0.34);
  --primary: #5ff2d2;
  --on-primary: #080b12;
  --primary-soft: rgba(95, 242, 210, 0.12);
  --secondary: #5da8ff;
  --secondary-soft: rgba(93, 168, 255, 0.14);
  --error: #ffb4ab;
  --radius-control: 8px;
  --radius-card: 12px;
  --radius-panel: 16px;
  --radius-device: 28px;
  --page-width: 1160px;
  --font-sans: Roboto, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --background: #f6f7fb;
    --surface: #ffffff;
    --surface-variant: #e8ecf2;
    --foreground: #101827;
    --muted: #5a6a82;
    --outline: rgba(114, 120, 125, 0.6);
    --outline-soft: rgba(114, 120, 125, 0.32);
    --primary: #006b5e;
    --on-primary: #ffffff;
    --primary-soft: #b8f5ea;
    --secondary: #0256a9;
    --secondary-soft: #d6ebff;
    --error: #ba1a1a;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font: 400 16px/1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

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

:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: var(--radius-control);
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-160%);
}

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

.shell {
  width: min(var(--page-width), calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  border-bottom: 1px solid var(--outline-soft);
  background: color-mix(in srgb, var(--background) 94%, transparent);
}

.site-nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-control);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
}

.nav-links a,
.site-footer a,
.text-link {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--foreground);
}

.hero {
  min-height: calc(100dvh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, 0.95fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
  padding-block: clamp(48px, 7vw, 80px);
}

.hero-copy {
  max-width: 590px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  color: var(--foreground);
  font-weight: 900;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 630px;
  margin: 0;
  font-size: clamp(3rem, 4vw, 3.5rem);
  line-height: 1.02;
}

h2 {
  margin: 0;
  font-size: clamp(2.1rem, 4.4vw, 4rem);
  line-height: 1.02;
}

h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.hero-lead {
  max-width: 52ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.5;
}

.hero-actions,
.release-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

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

.button:active {
  transform: translateY(1px);
}

.button-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.button-primary:hover {
  background: color-mix(in srgb, var(--primary) 88%, var(--foreground));
}

.button-secondary {
  border-color: var(--outline);
  background: var(--surface);
  color: var(--foreground);
}

.button-secondary:hover {
  border-color: var(--foreground);
}

.hero-visual {
  min-height: 600px;
  position: relative;
  isolation: isolate;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 12% 5% 8% 7%;
  z-index: -1;
  border-radius: var(--radius-device);
  background: var(--surface-variant);
  opacity: 0.55;
}

.device-frame,
.signal-phone {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-device);
  background: var(--surface);
  box-shadow: 0 24px 60px color-mix(in srgb, var(--background) 72%, transparent);
}

.device-frame img,
.signal-phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.device-frame {
  position: absolute;
  width: min(310px, 55%);
  aspect-ratio: 1 / 2;
}

.device-frame-primary {
  top: 0;
  left: 0;
}

.device-frame-secondary {
  right: 0;
  bottom: 0;
}

.trust-strip {
  border-block: 1px solid var(--outline-soft);
  background: var(--surface);
}

.trust-items {
  min-height: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  gap: 16px;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 800;
  text-align: center;
}

.trust-items span + span {
  border-left: 1px solid var(--outline-soft);
}

.download-section,
.roles-section,
.signal-section,
.facts-section {
  padding-block: clamp(72px, 10vw, 128px);
}

.download-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: clamp(36px, 7vw, 88px);
}

.section-copy > p:not(.eyebrow),
.roles-copy > p,
.signal-copy > p,
.facts-heading > p {
  max-width: 56ch;
  margin: 20px 0 0;
  color: var(--muted);
}

.safety-note {
  padding-left: 16px;
  border-left: 3px solid var(--primary);
  font-size: 0.875rem;
}

.release-card {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-panel);
  background: var(--surface);
}

.release-card[aria-busy="true"] {
  animation: release-pulse 1.4s ease-in-out infinite alternate;
}

.release-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.release-badge {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding-inline: 10px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.release-badge.preview {
  background: var(--secondary-soft);
  color: var(--secondary);
}

.release-date,
.release-tag,
.release-status {
  color: var(--muted);
}

.release-date {
  font-size: 0.875rem;
  font-weight: 700;
}

.release-tag {
  margin: 8px 0 0;
}

.release-status {
  margin: 20px 0 0;
  font-size: 0.875rem;
}

.release-card.error .release-status {
  color: var(--error);
}

.roles-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(40px, 8vw, 104px);
  border-top: 1px solid var(--outline-soft);
}

.text-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--primary);
  font-weight: 800;
}

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

.role-card {
  min-height: 156px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-control);
  background: var(--surface);
}

.role-card p {
  max-width: 46ch;
  margin: 12px 0 0;
  color: var(--muted);
}

.signal-section {
  display: grid;
  grid-template-columns: minmax(460px, 1.08fr) minmax(0, 0.92fr);
  align-items: center;
  gap: clamp(40px, 8vw, 104px);
  border-top: 1px solid var(--outline-soft);
}

.signal-images {
  min-height: 560px;
  position: relative;
}

.signal-phone {
  position: absolute;
  width: min(280px, 48%);
  aspect-ratio: 1 / 2;
}

.signal-phone-light {
  top: 0;
  left: 0;
}

.signal-phone-dark {
  right: 0;
  top: 48px;
}

.mini-signal {
  height: 96px;
  display: flex;
  align-items: end;
  gap: 8px;
  margin-top: 32px;
  padding: 16px;
  border-radius: var(--radius-panel);
  background: var(--secondary-soft);
}

.mini-signal span {
  flex: 1;
  height: calc(18px + var(--bar-index, 0) * 9px);
  border-radius: var(--radius-control);
  background: var(--secondary);
  transform-origin: bottom;
}

.mini-signal span:nth-child(1) { height: 18px; }
.mini-signal span:nth-child(2) { height: 27px; }
.mini-signal span:nth-child(3) { height: 36px; }
.mini-signal span:nth-child(4) { height: 45px; }
.mini-signal span:nth-child(5) { height: 54px; }
.mini-signal span:nth-child(6) { height: 63px; }

.signal-caption {
  font-size: 0.875rem;
}

.facts-section {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(480px, 1.25fr);
  gap: clamp(40px, 8vw, 104px);
  border-top: 1px solid var(--outline-soft);
}

.fact-list {
  margin: 0;
}

.fact-list > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding-block: 20px;
  border-bottom: 1px solid var(--outline-soft);
}

.fact-list > div:first-child {
  padding-top: 0;
}

.fact-list dt {
  color: var(--foreground);
  font-weight: 800;
}

.fact-list dd {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--outline-soft);
  background: var(--surface);
}

.legal-main {
  width: min(720px, calc(100% - 40px));
  margin-inline: auto;
  padding-block: clamp(56px, 9vw, 104px);
}

.legal-main h1 {
  margin-bottom: 32px;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
}

.legal-main h2 {
  margin-top: 36px;
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.legal-main p {
  margin: 12px 0 0;
  color: var(--muted);
}

.legal-main a:not(.button) {
  color: var(--primary);
  text-underline-offset: 4px;
}

.legal-back {
  margin-top: 48px;
}

.footer-content {
  min-height: 112px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-content p {
  margin: 0;
}

.footer-content nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

@keyframes release-pulse {
  from { opacity: 0.72; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy {
    animation: hero-enter 520ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .hero-visual {
    animation: hero-enter 620ms 80ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .mini-signal span {
    animation: signal-breathe 1.8s ease-in-out infinite alternate;
  }

  .mini-signal span:nth-child(2) { animation-delay: 70ms; }
  .mini-signal span:nth-child(3) { animation-delay: 140ms; }
  .mini-signal span:nth-child(4) { animation-delay: 210ms; }
  .mini-signal span:nth-child(5) { animation-delay: 280ms; }
  .mini-signal span:nth-child(6) { animation-delay: 350ms; }
}

@keyframes hero-enter {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes signal-breathe {
  from { opacity: 0.58; transform: scaleY(0.8); }
  to { opacity: 1; transform: scaleY(1); }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 980px) {
  .site-nav {
    align-items: flex-start;
    padding-block: 14px;
  }

  .nav-links {
    max-width: 620px;
    justify-content: flex-end;
    flex-wrap: wrap;
    white-space: normal;
  }

  .hero,
  .download-section,
  .roles-section,
  .signal-section,
  .facts-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    max-width: 700px;
  }

  .hero-visual,
  .signal-images {
    width: min(650px, 100%);
    margin-inline: auto;
  }

  .roles-copy,
  .signal-copy,
  .facts-heading {
    max-width: 700px;
  }
}

@media (max-width: 700px) {
  .shell {
    width: min(100% - 32px, var(--page-width));
  }

  .site-header {
    min-height: 64px;
  }

  .site-nav {
    min-height: 64px;
    display: block;
  }

  .brand {
    margin-bottom: 12px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 8px 16px;
    padding-bottom: 4px;
  }

  .hero {
    gap: 32px;
    padding-block: 48px 64px;
  }

  h1 {
    font-size: clamp(2.7rem, 13vw, 3.75rem);
  }

  .hero-actions,
  .release-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-visual,
  .signal-images {
    min-height: 480px;
  }

  .trust-items {
    grid-template-columns: 1fr 1fr;
    padding-block: 16px;
  }

  .trust-items span + span {
    border-left: 0;
  }

  .download-section,
  .roles-section,
  .signal-section,
  .facts-section {
    padding-block: 72px;
  }

  .download-section,
  .roles-section,
  .signal-section,
  .facts-section {
    gap: 36px;
  }

  .release-card {
    min-height: 0;
  }

  .fact-list > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-content {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 28px;
  }

  .footer-content nav {
    justify-content: flex-start;
  }

  .legal-main {
    width: min(100% - 32px, 720px);
  }
}

@media (max-width: 420px) {
  .hero-visual,
  .signal-images {
    min-height: 400px;
  }

  .device-frame,
  .signal-phone {
    width: 58%;
    border-radius: 20px;
  }

  .signal-phone {
    width: 48%;
  }

  .signal-phone-dark {
    top: 36px;
  }
}