*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: dark;
  --bg: #151a22;
  --fg: #eef0f4;
  --muted: #8b93a8;
  --card: rgba(32, 38, 50, 0.78);
  --border: rgba(255, 255, 255, 0.08);
  --primary: #9ae600;
  --primary-fg: #1a2e0a;
  --radius: 1.25rem;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at top, rgba(90, 140, 40, 0.22) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(40, 55, 90, 0.25) 0%, transparent 55%);
  opacity: 0.7;
}

.bg-gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(21, 26, 34, 0.65) 0%,
    rgba(21, 26, 34, 0.88) 45%,
    var(--bg) 100%
  );
}

.page {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.glass {
  background: var(--card);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.4);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.hero {
  padding: 2.5rem 2rem;
  text-align: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: 1rem;
  border-radius: 1rem;
  background: rgba(154, 230, 0, 0.12);
  color: var(--primary);
  border: 1px solid rgba(154, 230, 0, 0.28);
}

.logo svg {
  width: 1.75rem;
  height: 1.75rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.accent {
  color: var(--primary);
}

.lead {
  margin: 1rem auto 0;
  max-width: 34rem;
  font-size: 1rem;
  color: var(--muted);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 2rem;
  padding: 0.95rem 2rem;
  min-width: 16rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary-fg);
  background: var(--primary);
  border: none;
  border-radius: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 12px 32px rgba(154, 230, 0, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  animation: pulse-ring 2.5s cubic-bezier(0.66, 0, 0, 1) infinite;
}

.btn-download svg {
  width: 1.25rem;
  height: 1.25rem;
}

.btn-download:hover {
  transform: translateY(-2px);
  background: #b0f520;
  box-shadow: 0 16px 40px rgba(154, 230, 0, 0.3);
}

.btn-download:active {
  transform: translateY(0);
}

.download-hint {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
}

.feature {
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius);
}

.feature h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.feature p {
  font-size: 0.9rem;
  color: var(--muted);
}

.footer {
  margin-top: auto;
  padding-top: 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 12px 32px rgba(154, 230, 0, 0.22), 0 0 0 0 rgba(154, 230, 0, 0.35);
  }
  70% {
    box-shadow: 0 12px 32px rgba(154, 230, 0, 0.22), 0 0 0 10px transparent;
  }
  100% {
    box-shadow: 0 12px 32px rgba(154, 230, 0, 0.22), 0 0 0 0 transparent;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2rem 1.25rem;
  }

  .btn-download {
    width: 100%;
    min-width: unset;
  }
}