:root{
  --bg:#ffffff; --text:#0a0f1e; --muted:#5f6b84;
  --primary:#0a5fff; --accent:#ffb400;
  --surface:#ffffff; --surface-2:#f5f7fb; --border:rgba(10,35,78,.12);
  --link:#0a5fff; --link-hover:#093fcc;
}
:root[data-mode="dark"]{
  --bg:#0b1020; --text:#e6ebf5; --muted:#9aa7bd;
  --primary:#6aa9ff; --accent:#ffc266;
  --surface:#11162a; --surface-2:#151c34; --border:rgba(255,255,255,.1);
  --link:#8dbbff; --link-hover:#c9e0ff;
}