:root {
  color-scheme: dark;
  --bg: #0f172a;
  --surface: rgba(15, 23, 42, 0.88);
  --surface-border: rgba(148, 163, 184, 0.24);
  --text: #e5eefb;
  --muted: #c3cee0;
  --accent: #5eead4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(94, 234, 212, 0.18), transparent 32%),
    linear-gradient(180deg, #0f172a 0%, #111827 100%);
  min-height: 100vh;
}
main { max-width: 820px; margin: 0 auto; padding: 48px 20px 64px; }
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.22);
}
h1, h2 { margin: 0 0 12px; line-height: 1.15; }
h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
h2 { margin-top: 28px; font-size: 1.25rem; }
p, li { color: var(--muted); line-height: 1.65; }
ul { padding-left: 20px; }
a { color: var(--accent); }
nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 20px; font-weight: 600; }
.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.12);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}
.cta {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 18px;
  border-radius: 14px;
  background: var(--accent);
  color: #042f2e;
  font-weight: 700;
  text-decoration: none;
}
footer { margin-top: 24px; font-size: 0.95rem; color: var(--muted); }