/* ============================================
   应用领域 - 视频背景场景
============================================ */
.scene-video-wrap {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.scene-video-wrap video {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
}

.video-caption {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0.85;
  animation: caption-fade 6s ease-in-out 2s forwards;
}

@keyframes caption-fade {
  0%   { opacity: 0.85; }
  100% { opacity: 0; }
}

/* 移动端适配 */
@media (max-width: 768px) {
  .scene-video-wrap {
    border-radius: 12px;
  }
  .video-caption {
    font-size: 10px;
    padding: 4px 10px;
    bottom: 8px;
  }
}