:root {
  --mint-darkest: #00331a;  /* very dark green */
  --mint-dark:    #004d26;  /* dark green */
  --mint-main:    #006633;  /* ✅ MAIN BRAND COLOR */
  --mint-light:   #4d9973;  /* softened green */
  --mint-lightest:#e6f2ec;  /* very light green */
}