:root {
  color-scheme: light;
  --android-green: #3ddc84;
  --android-green-strong: #0b8f53;
  --android-green-dark: #073042;
  --lime-surface: #efffe8;
  --mint-surface: #d7f8e6;
  --blue-surface: #d7e8ff;
  --sand-surface: #fff7df;
  --ink: #10221b;
  --muted: #52635b;
  --subtle: #6a7a72;
  --page: #f7fbf2;
  --paper: #ffffff;
  --line: #dfe8de;
  --line-strong: #c8d8c5;
  --shadow: 0 22px 60px rgba(7, 48, 66, 0.12);
  --radius-xl: 42px;
  --radius-lg: 30px;
  --radius-md: 20px;
  font-family: Google Sans, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 4%, rgba(61, 220, 132, 0.23), transparent 26rem),
    radial-gradient(circle at 88% 9%, rgba(215, 232, 255, 0.82), transparent 24rem),
    linear-gradient(180deg, #fbfff8 0%, var(--page) 42%, #eef8eb 100%);
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(7, 48, 66, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 48, 66, 0.045) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: linear-gradient(to bottom, transparent, black 14%, transparent 86%);
}

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

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

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

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 100;
  transform: translateY(-180%);
  padding: 10px 14px;
  border-radius: 999px;
  color: white;
  background: var(--android-green-dark);
  font-weight: 800;
}

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

.site-header {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 10px 12px;
  border: 1px solid rgba(200, 216, 197, 0.75);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 42px rgba(7, 48, 66, 0.09);
  backdrop-filter: blur(18px);
}

.brand,
.site-nav,
.nav-cta,
.button,
.copy-button,
.text-link {
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 7px;
  border-radius: 999px;
  font-weight: 850;
  letter-spacing: -0.03em;
}

.brand:hover,
.site-nav a:hover,
.nav-cta:hover,
.button:hover,
.copy-button:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  width: 34px;
  height: 34px;
  padding: 7px;
  border-radius: 50%;
  background: var(--android-green-dark);
}

.brand-mark span {
  border-radius: 50%;
  background: var(--android-green);
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 4px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a,
.nav-cta {
  border-radius: 999px;
  padding: 11px 15px;
  font-weight: 780;
}

.site-nav a:hover {
  color: var(--android-green-dark);
  background: var(--lime-surface);
}

.nav-cta {
  color: white;
  background: var(--android-green-dark);
  box-shadow: 0 10px 24px rgba(7, 48, 66, 0.16);
}

.nav-cta:hover {
  background: #0c4055;
}

.section-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 1.05fr);
  gap: 58px;
  align-items: center;
  min-height: calc(100vh - 78px);
  padding: 94px 0 86px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--android-green-strong);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 850px;
  margin-bottom: 22px;
  color: var(--android-green-dark);
  font-size: clamp(3.4rem, 8.2vw, 7.25rem);
  line-height: 0.91;
  letter-spacing: -0.085em;
}

h2 {
  margin-bottom: 16px;
  color: var(--android-green-dark);
  font-size: clamp(2.25rem, 5vw, 4.9rem);
  line-height: 0.96;
  letter-spacing: -0.07em;
}

h3 {
  margin-bottom: 12px;
  color: var(--android-green-dark);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-subtitle {
  max-width: 710px;
  margin-bottom: 30px;
  font-size: clamp(1.08rem, 1.8vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 850;
}

.button.primary {
  color: white;
  background: var(--android-green-dark);
  box-shadow: 0 14px 28px rgba(7, 48, 66, 0.16);
}

.button.secondary {
  color: var(--android-green-dark);
  background: white;
  border-color: var(--line-strong);
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-pills li {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--android-green-dark);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.94rem;
  font-weight: 760;
}

.device-stage {
  position: relative;
  min-height: 620px;
  border-radius: 56px;
  background:
    linear-gradient(135deg, rgba(239, 255, 232, 0.98), rgba(215, 248, 230, 0.9)),
    var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.device-stage::before {
  position: absolute;
  right: -98px;
  bottom: -108px;
  width: 280px;
  height: 280px;
  content: "";
  border-radius: 50%;
  background: var(--android-green);
  opacity: 0.88;
}

.stage-orbit {
  position: absolute;
  inset: 56px;
  border: 2px dashed rgba(7, 48, 66, 0.11);
  border-radius: 999px;
  transform: rotate(-17deg);
}

.desktop-device,
.phone-device,
.signal-card {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(7, 48, 66, 0.1);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 24px 50px rgba(7, 48, 66, 0.14);
}

.desktop-device {
  top: 76px;
  left: 44px;
  width: min(74%, 470px);
  overflow: hidden;
  border-radius: 34px;
}

.device-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--android-green-dark);
  background: #fbfef8;
  font-size: 0.85rem;
}

.device-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--android-green);
}

.device-bar span:nth-child(2) {
  background: #7dd8ff;
}

.device-bar span:nth-child(3) {
  background: #ffd166;
}

.device-bar strong {
  margin-left: auto;
}

.desktop-panel {
  padding: 34px;
}

.mini-label,
.card-kicker {
  margin: 0 0 8px;
  color: var(--android-green-strong);
  font-size: 0.72rem;
  font-weight: 920;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.pin-code {
  margin: 0 0 18px;
  color: var(--android-green-dark);
  font-size: clamp(3rem, 7vw, 5.3rem);
  font-weight: 940;
  line-height: 0.95;
  letter-spacing: 0.055em;
}

.host-chip,
.signal-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  color: var(--android-green-dark);
  background: var(--lime-surface);
  font-weight: 820;
}

.host-chip {
  padding: 11px 14px;
}

.phone-device {
  right: 54px;
  bottom: 58px;
  width: 206px;
  padding: 12px;
  border-radius: 38px;
  transform: rotate(5deg);
}

.phone-camera {
  width: 58px;
  height: 6px;
  margin: 6px auto 13px;
  border-radius: 999px;
  background: #d9e6d6;
}

.phone-ui {
  min-height: 322px;
  padding: 18px;
  border-radius: 28px;
  background: linear-gradient(180deg, var(--android-green-dark), #0b5d43);
}

.phone-ui .mini-label {
  color: var(--android-green);
}

.gesture-field {
  position: relative;
  height: 186px;
  margin: 18px 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 24px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
}

.gesture-dot {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--android-green);
  box-shadow: 0 0 0 8px rgba(61, 220, 132, 0.2);
}

.gesture-dot.one {
  top: 52px;
  left: 46px;
}

.gesture-dot.two {
  right: 38px;
  bottom: 56px;
}

.gesture-line {
  position: absolute;
  top: 88px;
  left: 62px;
  width: 82px;
  height: 3px;
  border-radius: 999px;
  background: var(--android-green);
  transform: rotate(28deg);
  transform-origin: left center;
}

.phone-controls {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.phone-controls span {
  display: grid;
  min-height: 42px;
  place-items: center;
  border-radius: 16px;
  color: var(--android-green-dark);
  background: var(--android-green);
  font-size: 0.86rem;
  font-weight: 880;
}

.signal-card {
  right: 112px;
  top: 74px;
  padding: 12px 15px;
  font-size: 0.9rem;
}

.signal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--android-green-strong);
  box-shadow: 0 0 0 8px rgba(61, 220, 132, 0.22);
}

.section-block {
  padding: 76px 0;
}

.section-heading {
  max-width: 790px;
  margin-bottom: 34px;
}

.section-heading.compact {
  max-width: 900px;
}

.section-heading p {
  font-size: 1.05rem;
}

.feature-grid,
.setup-grid,
.trust-grid {
  display: grid;
  gap: 20px;
}

.feature-grid {
  grid-template-columns: 1.05fr 0.95fr 0.95fr;
  align-items: stretch;
}

.feature-card,
.step-card,
.split-panel,
.code-card,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: 0 12px 34px rgba(7, 48, 66, 0.07);
}

.feature-card {
  min-height: 320px;
  padding: 30px;
  overflow: hidden;
}

.feature-card.tall {
  background: var(--lime-surface);
}

.feature-card.green {
  background: var(--mint-surface);
}

.feature-card.blue {
  background: var(--blue-surface);
}

.feature-icon {
  display: grid;
  width: 64px;
  height: 64px;
  margin-bottom: 58px;
  place-items: center;
  border-radius: 22px;
  color: white;
  background: var(--android-green-dark);
  font-size: 1.65rem;
  font-weight: 900;
}

.feature-card p:last-child,
.step-card p,
.trust-grid p,
.protocol-copy p,
.faq-list p,
.site-footer {
  color: var(--muted);
}

.setup-section {
  position: relative;
}

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

.step-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 28px;
}

.step-card.accent {
  background: var(--sand-surface);
}

.step-tag {
  align-self: flex-start;
  margin-bottom: 20px;
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--android-green-dark);
  background: var(--lime-surface);
  font-size: 0.82rem;
  font-weight: 880;
}

.step-card pre,
.code-card pre {
  overflow-x: auto;
  margin: 18px 0;
  padding: 18px;
  border-radius: 22px;
  color: #eafff2;
  background: var(--android-green-dark);
  line-height: 1.65;
}

.copy-button {
  align-self: flex-start;
  margin-top: auto;
  border: 0;
  cursor: pointer;
  padding: 12px 15px;
  border-radius: 999px;
  color: white;
  background: var(--android-green-dark);
  font: inherit;
  font-weight: 850;
}

.copy-button.copied {
  color: var(--android-green-dark);
  background: var(--android-green);
}

.check-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.85;
}

.split-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 38px;
  padding: 36px;
  background: var(--android-green-dark);
}

.split-panel h2,
.split-panel h3 {
  color: white;
}

.split-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.split-panel .eyebrow,
.trust-number {
  color: var(--android-green);
}

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

.trust-grid article {
  padding: 4px;
}

.trust-number {
  display: block;
  margin-bottom: 34px;
  font-size: 0.88rem;
  font-weight: 930;
  letter-spacing: 0.18em;
}

.about-section .trust-number {
  color: var(--android-green-strong);
}

.protocol-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(380px, 1.12fr);
  gap: 26px;
  align-items: center;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--android-green-dark);
  font-weight: 900;
}

.text-link::after {
  content: "→";
  transition: transform 180ms ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

.code-card {
  padding: 10px;
  background: #e9f7e8;
}

.code-card pre {
  min-height: 236px;
  margin: 0;
}

.faq-section {
  padding-top: 50px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  padding: 22px 24px;
  background: rgba(255, 255, 255, 0.82);
}

.faq-list summary {
  cursor: pointer;
  color: var(--android-green-dark);
  font-weight: 900;
  list-style-position: outside;
}

.faq-list p {
  margin: 14px 0 0;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--android-green-dark);
  font-weight: 800;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .site-header {
    position: static;
    grid-template-columns: 1fr auto;
    border-radius: 28px;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 4px 2px 2px;
  }

  .hero,
  .protocol-section,
  .split-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 52px;
  }

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

  .device-stage {
    min-height: 560px;
  }
}

@media (max-width: 640px) {
  .section-shell,
  .site-header,
  .site-footer {
    width: min(100% - 22px, 1180px);
  }

  .site-header {
    gap: 10px;
  }

  .nav-cta {
    padding-inline: 12px;
  }

  h1 {
    font-size: clamp(3rem, 17vw, 4.35rem);
  }

  h2 {
    font-size: clamp(2.1rem, 12vw, 3.4rem);
  }

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

  .button {
    width: 100%;
  }

  .device-stage {
    min-height: 500px;
    border-radius: 36px;
  }

  .desktop-device {
    top: 32px;
    left: 18px;
    width: calc(100% - 36px);
  }

  .desktop-panel {
    padding: 24px;
  }

  .phone-device {
    right: 20px;
    bottom: 32px;
    width: 168px;
    border-radius: 32px;
  }

  .phone-ui {
    min-height: 248px;
    padding: 14px;
  }

  .gesture-field {
    height: 134px;
  }

  .signal-card {
    top: auto;
    right: auto;
    left: 18px;
    bottom: 28px;
    max-width: calc(100% - 210px);
    align-items: flex-start;
    border-radius: 22px;
  }

  .feature-card,
  .step-card,
  .split-panel {
    border-radius: 26px;
    padding: 24px;
  }

  .section-block {
    padding: 54px 0;
  }
}

/* Download section */
.dl-button {
  margin-top: 6px;
}

.dl-meta {
  margin: 10px 0 0;
  font-size: 0.875rem;
  color: var(--subtle);
}