:root{
  --th-blue:#0ea5e9;
  --th-dark:#0f172a;
  --th-light:#f8fafc;
  --th-green:#10b981;
  --th-red:#ef4444;
}
.bg-th-blue   {background-color: var(--th-blue);}
.text-th-blue {color: var(--th-blue);}
.bg-th-dark   {background-color: var(--th-dark);}
.bg-th-light  {background-color: var(--th-light);}
.bg-th-green  {background-color: var(--th-green);}
.text-th-red  {color: var(--th-red);}