:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --surface: #111827;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --border: #1e293b;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #020617 0%, var(--bg) 40%, #0b1220 100%);
  color: var(--text);
  line-height: 1.6;
}

.hero,
main,
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem;
}

.hero {
  padding-top: 4rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.cta {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  color: #082f49;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
}

.cta:hover {
  filter: brightness(1.05);
}

.cta:disabled {
  opacity: 0.6;
  cursor: wait;
}

.status {
  min-height: 1.25rem;
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.panel {
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.panel.muted {
  color: var(--muted);
}

h2 {
  margin-top: 0;
}

ul {
  padding-left: 1.2rem;
}

footer {
  padding-bottom: 3rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .hero {
    padding-top: 2.5rem;
  }
}