:root {
  color-scheme: dark;
  --ink: #f4f6fb;
  --muted: rgba(244, 246, 251, 0.62);
  --violet: #7c5cff;
  --neon: #00f5d4;
}
html, body {
  height: 100%;
  margin: 0;
  background: #000;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
main {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
}
h1 { margin: 0; font-size: clamp(2.5rem, 10vw, 5rem); font-weight: 600; letter-spacing: -0.02em; }
p { margin: 0; color: var(--muted); }
a { color: var(--violet); }
.ai { color: var(--neon); text-shadow: 0 0 0.35em rgba(0, 245, 212, 0.55), 0 0 1em rgba(0, 245, 212, 0.25); }