:root {
  color-scheme: dark;
  --bg: #070b13;
  --card: rgba(17, 24, 39, 0.82);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #f8fafc;
  --muted: #a7b0c0;
  --accent: #8b5cf6;
  --accent-2: #06b6d4;
  --button-text: #ffffff;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.34), transparent 30rem),
    radial-gradient(circle at bottom right, rgba(6, 182, 212, 0.26), transparent 30rem),
    var(--bg);
  color: var(--text);
}

.page-shell {
  width: 100%;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px 18px 24px;
}

.hero-card {
  width: min(100%, 680px);
  padding: clamp(28px, 6vw, 56px);
  border: 1px solid var(--card-border);
  border-radius: 34px;
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.94), var(--card));
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(20px);
}

.logo-wrap {
  width: 132px;
  height: 132px;
  margin: 0 auto 22px;
  display: grid;
  place-items: center;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.app-logo {
  width: 96px;
  height: 96px;
  display: block;
}

.eyebrow {
  margin: 0 0 10px;
  color: #c4b5fd;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.subtitle {
  max-width: 520px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  line-height: 1.65;
}

.download-panel {
  margin-top: 34px;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  min-width: min(100%, 280px);
  padding: 0 26px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--button-text);
  font-weight: 850;
  font-size: 1.04rem;
  text-decoration: none;
  box-shadow: 0 18px 36px rgba(6, 182, 212, 0.2);
  transition: transform 160ms ease, filter 160ms ease;
}

.download-button:hover,
.download-button:focus-visible {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.download-meta {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.install-steps {
  margin: 38px auto 0;
  padding: 22px;
  max-width: 520px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.install-steps h2 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.install-steps ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.75;
}

.site-footer {
  margin-top: 22px;
  color: rgba(248, 250, 252, 0.62);
  font-size: 0.88rem;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 520px) {
  .hero-card {
    border-radius: 26px;
  }

  .logo-wrap {
    width: 108px;
    height: 108px;
    border-radius: 26px;
  }

  .app-logo {
    width: 78px;
    height: 78px;
  }
}