/* flex左右布局居中 */
.flc_zy {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* flex上下布局 */
.flc_sx {
  display: flex;
  flex-direction: column;
}

/* flex上下居中布局 */
.flc_sxc {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* 文本居中 */
.tc {
  text-align: center;
}

/* 文本加粗 */
.fb {
  font-weight: bold;
}

/* margin左右居中 */
.mc {
  margin-left: auto;
  margin-right: auto;
}

/* margin靠左 */
.ml {
  margin-right: auto;
}

/* margin靠右 */
.mr {
  margin-left: auto;
}

/* 隐藏 */
.hide {
  display: none;
}

/* 视频播放窗口 */

.vd_full {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgb(255 255 255 / 80%);
  z-index: 99999;
}
.vd_box {
  position: absolute;
  top: 52%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  z-index: 2;
}
.vd_box::before {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}
.close_v {
  position: absolute;
  top: -0.2rem;
  right: -0.2rem;
  width: 0.4rem;
  height: 0.4rem;
  background: var(--i_color);
  z-index: 2;
  -webkit-border-radius: 50%;
  border-radius: 50%;
  cursor: pointer;
}
.close_v::before {
  content: "+";
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: 0.44rem;
  color: #fff;
  -webkit-transform: translate(-50%, -50%) rotate(45deg);
  transform: translate(-50%, -50%) rotate(45deg);
}
.vd_box iframe {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: #000;
  object-fit: contain;
}
@media screen and (max-width: 1024px) {
  .vd_box {
    width: 80%;
  }
  .close_v::before {
    font-size: 0.4rem;
  }
}
@media screen and (max-width: 768px) {
  .vd_box {
    width: 88%;
  }
  .close_v {
    top: -0.15rem;
    right: -0.15rem;
    width: 0.3rem;
    height: 0.3rem;
  }
  .close_v::before {
    font-size: 0.3rem;
  }
}