:root{
  --bg:#ffffff; --text:#0f172a; --muted:#475569; --link:#2563eb;
  --card:#f8fafc; --border:#e2e8f0; --accent:#14b8a6; --shadow:0 10px 30px rgba(2,6,23,.08);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220; --text:#e5e7eb; --muted:#9ca3af; --link:#60a5fa;
    --card:#0f172a; --border:#1f2937; --accent:#2dd4bf; --shadow:0 10px 30px rgba(0,0,0,.35);
  }
}
html{scroll-behavior:smooth}