body {
  margin: 0;
  padding: 0;
  font-family: "Arial";
  box-sizing: border-box;
  overflow-x: hidden;
  /* 隐藏横向滚动条 */
  max-width: 100vw;
  /* 确保宽度不超出视口 */
  font-family: Arial, Helvetica, sans-serif;
}

.headerr2 {
  width: 100%;
  height: auto;
  /* background-image: url(../images/banner.jpg); */
  background-size: cover;
  /* 覆盖整个容器（可能裁剪） */
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: 0 0 15px rgba(36, 36, 36, 0.3);
}

.containerco2_list {
  display: flex;
  flex-wrap: nowrap;
  max-width: 1400px;
  margin: 0 auto;
  gap: 40px;
  /* 两列之间的间距 */
  margin-top: 155px;
  margin-top: 130px;
}

.co1_text {
  font-weight: bold;
  font-size: 28px;
  line-height: 40px;
}

.co1_con {
  font-size: 20px;
  margin-top: 10px;
  text-align: left;
}


/* 响应式调整 */
@media (max-width: 992px) {
  .containerco2_list {
    flex-wrap: wrap;
    /* 在中等屏幕上开始换行 */
    margin-top: 100px;
  }

  .left-column2,
  .right-column2 {
    flex: 1 1 100%;
  }

  .imgcol2 {
    height: auto;
  }

}



/*column2开始*/
.containerco2 {
  display: flex;
  flex-wrap: nowrap;
  max-width: 1600px;
  margin: 0 auto;
  gap: 40px;
  /* 两列之间的间距 */
  margin-top: 155px;
}

.left-column2 {
  flex: 1 1 55%;
  /* 左侧图片占比 */
  overflow: hidden;
  /* 确保图片缩放时不会溢出 */
}

.right-column2 {
  flex: 1 1 45%;
  /* 右侧文字占比 */
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px;
}

.imgcol2 {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* 保持图片比例并填充容器 */
}

.video-title {
  width: 60%;
}

img,
video {
  max-width: 100%;
  height: auto;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .containerco2 {
    flex-wrap: wrap;
    /* 在中等屏幕上开始换行 */
  }

  .left-column2,
  .right-column2 {
    flex: 1 1 100%;
  }

  .imgcol2 {
    height: auto;
  }
}

@media (max-width: 768px) {
  .bg2 {
    height: auto;
  }

  .containerco2_list {
    gap: 10px;
  }

  .video-title {
    width: 50%;
  }

  .co1_text {
    font-size: 20px;
    line-height: 22px;
    margin-top: 16px;
  }

  .co1_con {
    font-size: 14px;
  }
}

.video-container {
  position: relative;
  max-width: 800px;
  width: 100%;
  background-color: #000;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-player {
  width: 100%;
  height: auto;
  display: block;
}

.controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  padding: 15px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.video-container:hover .controls {
  opacity: 1;
  transform: translateY(0);
}

.progress-container {
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  margin-bottom: 12px;
  border-radius: 2px;
  cursor: pointer;
}

.progress-bar {
  height: 100%;
  background: #6495ED;
  width: 0%;
  border-radius: 2px;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.2s;
}

.progress-container:hover .progress-bar::after {
  opacity: 1;
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: white;
}

.control-btn {
  background: none;
  border: none;
  color: #FFF;
  font-size: 18px;
  cursor: pointer;
  margin-right: 15px;
  transition: color 0.2s;
  padding: 5px;
}

.control-btn:hover {
  color: #6495ED;
}

.time-display {
  font-size: 14px;
  margin: 0 10px;
  min-width: 100px;
  text-align: center;
}

.volume-container {
  display: flex;
  align-items: center;
}

.volume-slider {
  width: 80px;
  margin-left: 5px;
  -webkit-appearance: none;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  outline: none;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: #6495ED;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.volume-slider::-webkit-slider-thumb:hover {
  background: #4a80d7;
}

/* 响应式调整 */
@media (max-width: 600px) {
  .controls {
    padding: 10px;
  }

  .control-btn {
    font-size: 16px;
    margin-right: 10px;
  }

  .time-display {
    font-size: 12px;
    min-width: 80px;
  }

  .volume-slider {
    width: 60px;
  }
}

/*column2结束*/