.promo-section {
  padding: 80px 0;
  text-align: center;
  position: relative;
  isolation: isolate;
  background: var(--bg-color);
}

/* 背景單獨做透明度，避免整區 opacity 把標題與卡片一併沖淡 */
.promo-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url("../../images/banner_promotion-optimized.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.7;
  pointer-events: none;
}

.promo-section > .services-title,
.promo-section > .promo-wrapper,
.promo-section > .more-btn {
  position: relative;
  z-index: 1;
}

.promo-wrapper {
  position: relative;
  width: 100vw;
  overflow: hidden;
  margin: 40px 0;
  display: flex;
  justify-content: center;
}

.promo-wrapper::before,
.promo-wrapper::after {
  content: "";
  position: absolute;
  top: 0;
  width: 25%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}

.promo-wrapper::before {
  left: 0;
  background: linear-gradient(to right, white 20%, rgba(255, 255, 255, 0));
}

.promo-wrapper::after {
  right: 0;
  background: linear-gradient(to left, white 20%, rgba(255, 255, 255, 0));
}

.promo-track {
  display: flex;
  gap: 40px;
  padding: 20px 0;
  will-change: transform;
  transform: translateX(0);
}

.promo-card-link {
  display: block;
  flex-shrink: 0;
  width: 350px;
  text-decoration: none;
  color: inherit;
}

.card {
  width: 100%;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid #f5f5f5;
  text-align: left;
  transition: transform 0.4s;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(217, 197, 154, 0.15);
}

.promo-card-img {
  height: 230px;
  background: #fafafa;
  overflow: hidden;
}

.promo-card-img img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.promo-card-body {
  padding: 20px 24px 24px;
  text-align: center;
}

.card-title {
  color: var(--dark-gold);
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1.2px;
}

.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  border: 1px solid var(--pale-gold);
  color: var(--dark-gold);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  transition: 0.3s;
  font-size: 20px;
}

.nav-btn:hover {
  background: var(--dark-gold);
  color: #fff;
}

.prev-btn {
  left: 5%;
}

.next-btn {
  right: 5%;
}

.more-btn {
  display: inline-block;
  padding: 12px 60px;
  border: 1px solid var(--dark-gold);
  background: none;
  color: var(--dark-gold);
  cursor: pointer;
  letter-spacing: 2px;
  transition: 0.3s;
  text-decoration: none;
}

.more-btn:hover {
  background: var(--dark-gold);
  color: #fff;
}

@media (max-width: 900px) {
  .promo-section {
    padding: 64px 0;
  }

  .promo-wrapper {
    margin: 28px 0;
  }

  .promo-wrapper::before,
  .promo-wrapper::after {
    width: 15%;
  }

  .promo-track {
    gap: 16px;
    padding: 12px 0;
  }

  .promo-card-link {
    width: min(80vw, 280px);
  }

  .promo-card-img {
    height: 180px;
  }

  .promo-card-body {
    padding: 14px 14px 18px;
  }

  .card-title {
    font-size: 17px;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .prev-btn {
    left: 8px;
  }

  .next-btn {
    right: 8px;
  }

  .more-btn {
    padding: 10px 32px;
    font-size: 14px;
  }
}