.cabecera_interna {
  position: relative;
  width: 100%;
  height: 60vh; /* alto del hero */
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: visible;
  margin-bottom: 250px;
}

.imagenFondo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: brightness(0.4); /* oscurece la imagen para dar contraste */
  z-index: 1;
}

.cabecera_interna_content {
  position: relative;
  z-index: 2;
  margin-left:8%;
  max-width: 800px;
  top: 50%;
}

.overlay-box {
  background-color: #21438a; /* azul del cuadro */
  color: #fff;
  padding: 3.5rem;
}

.overlay-box h1 {
  font-size: 3rem !important;
  margin-bottom: 0.5rem !important;
  font-family: Mulish;
  font-weight: 800 !important;
  letter-spacing: 5px !important;
}

.overlay-box h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  font-weight: normal;
  font-family: Mulish;
  color: #61c7d8;
  margin-top: 20px !important;
}

.overlay-box p {
  font-size: 1.15rem;
  line-height: 1.5;
  font-family: Mulish;
  margin: 0 0 0px !important;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .cabecera_interna {
    height: auto;
    padding: 1rem 1rem;
    height: 40vh;
    margin-bottom: 10rem;
  }

  .cabecera_interna_content {
    margin: 0 auto;
    max-width: 100%;
  }

  .overlay-box {
    padding: 1.5rem;
    text-align: flex-start;
  }

  .overlay-box h2 {
    font-size: 1.6rem;
  }

  .overlay-box h3 {
    font-size: 1.2rem;
  }

  .overlay-box p {
    font-size: 0.95rem;
  }
}