:root {
  --black: #05070f;
  --panel: #0b1220;
  --panel-strong: #101a2e;
  --white: #f5fbff;
  --cyan: #2de2ff;
  --magenta: #ff2bd6;
  --muted: #9fb4d0;
}

* {
  box-sizing: border-box;
}

body {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(45, 226, 255, 0.14), transparent 45%),
    radial-gradient(ellipse at 90% 10%, rgba(255, 43, 214, 0.12), transparent 40%),
    var(--black);
  color: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  min-height: 100vh;
}

.site-bar {
  align-items: center;
  border-bottom: 1px solid rgba(45, 226, 255, 0.25);
  display: flex;
  gap: 18px;
  justify-content: space-between;
  padding: 14px 28px;
}

.site-bar__brand {
  color: var(--cyan);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-bar__nav {
  display: flex;
  gap: 16px;
}

.site-bar__nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.site-bar__nav a:hover {
  color: var(--cyan);
}

.page {
  margin: 0 auto;
  max-width: 1160px;
  padding: 28px;
}

.hero {
  align-items: center;
  display: grid;
  gap: 22px;
  grid-template-columns: 124px 1fr;
  margin-bottom: 18px;
}

.mark {
  align-items: center;
  display: grid;
  height: 124px;
  justify-items: center;
  position: relative;
  width: 124px;
}

.mark__core {
  background: var(--magenta);
  border-radius: 50%;
  box-shadow: 0 0 24px rgba(255, 43, 214, 0.7);
  height: 28px;
  width: 28px;
  z-index: 1;
}

.mark__ring {
  border: 4px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(45, 226, 255, 0.55);
  height: 88px;
  left: 18px;
  position: absolute;
  top: 18px;
  width: 88px;
}

.label,
.eyebrow {
  background: var(--cyan);
  color: var(--black);
  display: inline-block;
  font-size: 14px;
  font-weight: 900;
  margin: 0 0 8px;
  padding: 7px 10px;
}

h1 {
  font-size: clamp(44px, 9vw, 92px);
  letter-spacing: -0.02em;
  line-height: 0.9;
  margin: 0;
  text-shadow: 0 0 24px rgba(45, 226, 255, 0.35);
}

.tagline {
  color: var(--magenta);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.06em;
  margin: 12px 0 0;
  text-transform: uppercase;
}

.subhead {
  color: var(--muted);
  font-size: 18px;
  font-weight: 800;
  margin: 12px 0 0;
  max-width: 46rem;
}

.private-note {
  border: 3px solid var(--magenta);
  color: var(--cyan);
  font-size: 17px;
  font-weight: 900;
  margin: 0 0 22px;
  padding: 13px;
}

.platforms {
  align-items: start;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
}

.platform-card {
  background: var(--panel);
  border: 3px solid var(--cyan);
  padding: 20px;
}

.platform-card.android {
  border-color: var(--magenta);
  background: var(--panel-strong);
}

.platform-card.ios {
  border-color: rgba(45, 226, 255, 0.55);
}

.platform-heading {
  align-items: center;
  display: flex;
  gap: 14px;
}

.phone-icon {
  background: linear-gradient(160deg, var(--cyan), var(--magenta));
  border: 3px solid var(--white);
  height: 56px;
  width: 37px;
}

.phone-icon.iphone {
  background: #1a2438;
  border-color: var(--cyan);
}

.button {
  background: linear-gradient(90deg, var(--cyan), #7af0ff);
  color: var(--black);
  display: block;
  font-size: 18px;
  font-weight: 900;
  margin: 18px 0 10px;
  min-height: 60px;
  padding: 19px;
  text-align: center;
  text-decoration: none;
}

.button.feedback {
  display: inline-block;
  min-height: 0;
}

.button.muted {
  background: #243049;
  color: var(--muted);
  cursor: not-allowed;
  pointer-events: none;
}

.download-status,
.status,
.note,
.testing-notes p {
  color: var(--muted);
  font-size: 16px;
  font-weight: 800;
}

.status {
  color: var(--cyan);
  font-size: 22px;
}

dl {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
}

dl div {
  display: flex;
  gap: 14px;
  justify-content: space-between;
}

dt {
  color: var(--muted);
  font-weight: 800;
}

dd {
  font-weight: 900;
  margin: 0;
  text-align: right;
}

.install-steps {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.install-steps div {
  align-items: center;
  background: rgba(45, 226, 255, 0.08);
  display: grid;
  gap: 12px;
  grid-template-columns: 42px 1fr;
  padding: 10px;
}

.install-steps span {
  align-items: center;
  background: var(--magenta);
  color: var(--white);
  display: flex;
  font-weight: 900;
  height: 36px;
  justify-content: center;
  width: 36px;
}

.install-steps p,
.fallback {
  font-size: 16px;
  font-weight: 800;
  margin: 0;
}

a {
  color: var(--cyan);
}

details {
  border-top: 2px solid rgba(45, 226, 255, 0.22);
  margin-top: 16px;
  padding-top: 12px;
}

summary {
  color: var(--cyan);
  cursor: pointer;
  font-size: 17px;
  font-weight: 900;
}

.hash {
  font-family: Consolas, Monaco, monospace;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.testing-notes {
  border-top: 4px solid var(--magenta);
  margin-top: 28px;
  padding-top: 22px;
}

.site-foot {
  border-top: 1px solid rgba(45, 226, 255, 0.2);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 18px 28px 32px;
}

.site-foot a {
  color: var(--muted);
  font-weight: 800;
  text-decoration: none;
}

.site-foot a:hover {
  color: var(--cyan);
}

@media (max-width: 760px) {
  .site-bar,
  .page {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero,
  .platforms {
    grid-template-columns: 1fr;
  }

  .mark {
    height: 102px;
    width: 102px;
  }

  .mark__ring {
    height: 72px;
    left: 15px;
    top: 15px;
    width: 72px;
  }

  h1 {
    font-size: 48px;
  }
}