/* ========== SECCIONES GENERALES ========== */
    section { padding: 70px 20px; }
    .container { max-width: 1200px; margin: auto; }
    .section-title {
      text-align: center;
      font-size: clamp(1.7rem, 3.5vw, 2.6rem);
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--azul);
    }
    body.dark .section-title { color: var(--cian); }
    .section-sub {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 44px;
      opacity: .8;
    }