:root {
  --bg: #14070f;
  --bg-2: #22091a;
  --text: #fbeaf3;
  --muted: #c9a3b8;
  --pink: #ff4fa3;
  --pink-2: #c23bff;
  --line: rgba(255, 79, 163, 0.28);
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: radial-gradient(ellipse at top, var(--bg-2), var(--bg) 60%), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 16px 0;
}

.banner img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 0 0 1px var(--line), 0 18px 60px rgba(255, 79, 163, 0.18);
}

.cta-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 0 32px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 260px;
  height: 56px;
  padding: 0 40px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pink), var(--pink-2));
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  text-decoration: none;
  box-shadow: 0 8px 28px rgba(255, 79, 163, 0.45);
  animation: pulse 2.4s ease-in-out infinite;
}

.cta:active { transform: scale(0.97); }

.cta-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 8px 28px rgba(255, 79, 163, 0.45); }
  50% { box-shadow: 0 8px 40px rgba(255, 79, 163, 0.75); }
}

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.features li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.features b { font-size: 17px; }
.features span { color: var(--muted); font-size: 14px; }

footer {
  padding: 24px 16px 40px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

footer p { margin: 4px 0; }

@media (max-width: 767px) {
  main { padding: 0; }

  .banner img {
    border-radius: 0;
    box-shadow: none;
  }

  .cta-row { padding: 20px 16px 24px; }
  .cta { width: 100%; }

  .features {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 8px 16px 0;
  }

  .features li { padding: 14px; }
  .features b { font-size: 15px; }
  .features span { font-size: 12px; }

  footer { padding-bottom: calc(40px + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  .cta { animation: none; }
}