:root {
  color-scheme: dark;
  --background: #0f172a;
  --background-glow: rgba(56, 189, 248, 0.18);
  --card: rgba(15, 23, 42, 0.78);
  --card-border: rgba(148, 163, 184, 0.24);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --shadow: rgba(2, 8, 23, 0.42);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--background-glow), transparent 34rem),
    linear-gradient(135deg, #020617 0%, var(--background) 48%, #111827 100%);
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 4rem 4rem;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 80%);
}

.page-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 2rem;
}

.hero-card {
  width: min(100%, 48rem);
  padding: clamp(2rem, 5vw, 4.5rem);
  border: 1px solid var(--card-border);
  border-radius: 2rem;
  background: var(--card);
  box-shadow: 0 2rem 6rem var(--shadow);
  text-align: center;
  backdrop-filter: blur(22px);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 9vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.intro {
  max-width: 36rem;
  margin: 1.5rem auto 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.7;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
  margin-top: 2.25rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.85rem 1.25rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease;
}

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

.button:focus-visible {
  outline: 3px solid rgba(56, 189, 248, 0.4);
  outline-offset: 3px;
}

.button-primary {
  color: #02111f;
  background: var(--accent);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #7dd3fc;
}

.button-secondary {
  color: var(--text);
  border-color: var(--card-border);
  background: rgba(255, 255, 255, 0.05);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(248, 250, 252, 0.5);
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 36rem) {
  .page-shell {
    padding: 1rem;
  }

  .hero-card {
    border-radius: 1.5rem;
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }
}