:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #173c59;
  background: #eef5f7;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 32px 18px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 20% 0%, rgba(122, 221, 236, 0.42), transparent 35%),
    linear-gradient(160deg, #f8fbfc 0%, #e4f0f3 100%);
}

.download-card {
  width: min(100%, 480px);
  padding: 38px 30px 30px;
  text-align: center;
  background: #ffffff;
  border: 1px solid rgba(23, 60, 89, 0.1);
  border-radius: 28px;
  box-shadow: 0 24px 70px rgba(23, 60, 89, 0.14);
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 23px;
  box-shadow: 0 12px 30px rgba(23, 60, 89, 0.2);
}

.eyebrow {
  margin: 22px 0 5px;
  color: #18889b;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 2.75rem);
  letter-spacing: -0.04em;
}

.intro {
  margin: 14px auto 25px;
  max-width: 360px;
  color: #526b7c;
  font-size: 1.05rem;
  line-height: 1.55;
}

.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 58px;
  padding: 14px 20px;
  border-radius: 15px;
  color: #ffffff;
  background: #173c59;
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(23, 60, 89, 0.22);
}

.download-button:hover,
.download-button:focus-visible {
  background: #205472;
  transform: translateY(-1px);
}

.download-button span {
  font-size: 1.45rem;
  line-height: 1;
}

.version {
  margin: 12px 0 27px;
  color: #6b7f8d;
  font-size: 0.84rem;
}

.instructions {
  padding: 20px 22px;
  text-align: left;
  background: #f5f9fa;
  border-radius: 17px;
}

.instructions h2 {
  margin: 0 0 11px;
  font-size: 1rem;
}

.instructions ol {
  margin: 0;
  padding-left: 21px;
  color: #526b7c;
  line-height: 1.65;
}

.help {
  margin: 20px 0 0;
  color: #6b7f8d;
  font-size: 0.87rem;
}

@media (max-width: 420px) {
  body {
    padding: 18px 12px;
  }

  .download-card {
    padding: 30px 20px 24px;
    border-radius: 22px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .download-button {
    transition: transform 160ms ease, background-color 160ms ease;
  }
}