.banner-carousel {
  width: 100%;
  height: auto;
  overflow: hidden;
  position: relative;
  box-sizing: border-box;
}
.carousel-track {
  display: flex;
  transition: transform 0.8s cubic-bezier(0.67,0,0.21,1);
  height: auto;
}
.carousel-slide {
  min-width: 100vw;
  height: auto;
  flex-shrink: 0;
  display: flex;
}
.carousel-slide img {
  width: 100vw;
  height: auto;
  object-fit: cover;
  display: block;
  background: #000;
  user-select: none;
  pointer-events: none;
}
/* Navegação opcional */
.carousel-btn {
  position: absolute;
  top: 50%;
  z-index: 10;
  border: none;
  padding: 0;
  margin: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(-50%);
  cursor: pointer;
  opacity: 0.7;
  color: #000;
  background: rgba(255,255,255,0.6);
  transition: opacity 0.2s;
}
.carousel-btn:hover {
  background: rgba(255,255,255,1.0);
}
.carousel-prev { left: 15px; }
.carousel-next { right: 15px; }