/* 후원사 가로 흐름 배너 */
.sponsor-banner {
  width: 100%;
  background: #ffffff;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  padding: 28px 0 32px;
  overflow: hidden;
}

.sponsor-banner-inner {
  max-width: var(--container-max-width, 1280px);
  margin: 0 auto;
  padding: 0 20px;
}

.sponsor-banner-label {
  margin: 0 0 18px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #888888;
  text-transform: uppercase;
}

.sponsor-banner-viewport {
  overflow: hidden;
  width: 100%;
  mask-image: linear-gradient(
    to right,
    transparent,
    #000 8%,
    #000 92%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    #000 8%,
    #000 92%,
    transparent
  );
}

.sponsor-banner-track {
  display: flex;
  width: max-content;
  animation: sponsor-banner-scroll 40s linear infinite;
}

/* 복제 그룹이 없으면(스폰서 적음) 롤링 없이 가운데 고정 */
.sponsor-banner-track:not(:has(.sponsor-banner-group[aria-hidden='true'])) {
  animation: none;
  width: 100%;
  justify-content: center;
}

.sponsor-banner:not(:has(.sponsor-banner-group[aria-hidden='true'])) .sponsor-banner-viewport {
  mask-image: none;
  -webkit-mask-image: none;
}

.sponsor-banner:not(:has(.sponsor-banner-group[aria-hidden='true'])) .sponsor-banner-group {
  justify-content: center;
  padding-right: 0;
}

.sponsor-banner-track:hover {
  animation-play-state: paused;
}

.sponsor-banner-group {
  display: flex;
  align-items: center;
  gap: 80px;
  padding-right: 80px;
}

.sponsor-banner-item {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 250px;
  height: 80px;
}

.sponsor-banner-item:hover {
  opacity: 1;
  transform: scale(1.03);
}

.sponsor-banner-item a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.sponsor-banner-item img {
  display: block;
  width: auto;
  height: auto;
  max-width: 250px;
  max-height: 80px;
  object-fit: contain;
}

@keyframes sponsor-banner-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

@media (max-width: 768px) {
  .sponsor-banner {
    padding: 20px 0 24px;
  }

  .sponsor-banner-label {
    margin-bottom: 14px;
    font-size: 12px;
  }

  .sponsor-banner-group {
    gap: 32px;
    padding-right: 32px;
  }

  .sponsor-banner-item {
    width: 125px;
    height: 40px;
  }

  .sponsor-banner-item img {
    max-width: 125px;
    max-height: 40px;
  }

  .sponsor-banner-track {
    animation-duration: 32s;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sponsor-banner-track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    gap: 20px;
  }

  .sponsor-banner-group[aria-hidden='true'] {
    display: none;
  }

  .sponsor-banner-group {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px 28px;
    padding-right: 0;
  }

  .sponsor-banner-viewport {
    mask-image: none;
    -webkit-mask-image: none;
  }
}