:root {
  --bg: #050816;
  --fg: #e8edf5;
  --muted: #9aa7be;
  --accent: #60a5fa;
  --accent-2: #7c8df5;
  --max-width: 960px;
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(96, 165, 250, 0.12), transparent 32%),
    radial-gradient(circle at 80% 10%, rgba(124, 58, 237, 0.12), transparent 36%),
    var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding: clamp(2.5rem, 8vw, 4rem) clamp(1.5rem, 6vw, 3.5rem) clamp(3rem, 10vw, 5rem);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-size: clamp(2.6rem, 5vw, 3.2rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(96, 165, 250, 0.16);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 0.9rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #f7f9ff;
  font-weight: 700;
  font-size: 1.02rem;
  border: 1px solid rgba(58, 116, 255, 0.35);
  box-shadow: 0 18px 40px rgba(58, 116, 255, 0.25);
  transition: transform 150ms ease, box-shadow 150ms ease, filter 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 48px rgba(58, 116, 255, 0.3);
  filter: brightness(1.02);
}

.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

footer {
  margin-top: 1.6rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.placeholder {
  margin-top: clamp(2rem, 6vw, 3rem);
  padding: clamp(2rem, 6vw, 3rem);
  border: 1px solid rgba(232, 237, 245, 0.08);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  box-shadow: 0 18px 50px rgba(5, 8, 22, 0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  min-height: min(70vh, 720px);
}

@media (max-width: 520px) {
  body {
    padding: 2rem 1.25rem 2.75rem;
  }
  .button {
    width: 100%;
  }
}