#factory .heading{text-align:center;margin-bottom:6px;max-width:none;width:100%}
.factory-video-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  width: min(1800px, calc(100vw - 48px));
  margin: 28px 0 0 50%;
  transform: translateX(-50%);
}

/* 视频卡片：恢复原界面（▶ 圆形 + 标题 + 介绍），点击原地放大播放 */
.factory-video-grid .factory-video-card {
  position: relative;
  display: grid;
  grid-template-rows: auto auto;
  align-content: start;
  min-width: 0;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  color: #16283b;
  text-align: left;
  background: linear-gradient(145deg, #eef4fb, #dce8f3 78%);
  border: 1px solid var(--line);
  transition: transform .35s ease, border-color .35s ease;
}

.factory-video-grid .fv-media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: linear-gradient(145deg, #eef4fb, #dce8f3 78%);
}

.factory-video-grid .factory-video-card:hover {
  z-index: 1;
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.factory-video-grid .fv-cover {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #071725;
  pointer-events: none;
}

.factory-video-grid .fv-cover-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  background: #071725;
  transition: opacity .24s ease;
}

.factory-video-grid .fv-cover-video.ready {
  opacity: 1;
}

.factory-video-grid .has-video h3 {
  color: #16283b;
  background: #f5f8fb;
}

.factory-video-grid .fv-play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--cyan);
  font-size: 24px;
  line-height: 1;
  border: 1px solid #1668d899;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255,255,255,.7);
}

.factory-video-grid h3 {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 72px;
  margin: 0;
  padding: 12px 14px;
  align-items: center;
  border-top: 1px solid #d4e0eb;
  background: #f5f8fb;
  font-size: clamp(14px, 1.05vw, 18px);
  line-height: 1.35;
}

.factory-video-grid p {
  position: relative;
  z-index: 2;
  margin: 0;
  color: #5d7387;
  font-size: 12px;
  line-height: 1.55;
}

/* 点击后：视频原地放大播放，覆盖整个卡片 */
.factory-video-grid .fv-stage {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none;
  background: #000;
}

.factory-video-grid .fv-stage.show {
  display: block;
}

.factory-video-grid .fv-stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #071725;
}

@media (max-width: 900px) {
  .factory-video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: calc(100vw - 28px);
  }
}

@media (max-width: 560px) {
  .factory-video-grid {
    grid-template-columns: 1fr;
  }

}

/* Desktop factory matrix: restrained precision motion, isolated from mobile. */
@media (min-width: 901px) {
  #factory > .wrap {
    width: min(1520px, calc(100% - 64px));
    max-width: none;
  }

  #factory .heading h2 {
    animation: fv-title-enter .58s cubic-bezier(.16, .72, .2, 1) both;
  }

  .factory-video-grid {
    position: relative;
    width: 100%;
    max-width: 1520px;
    margin: 24px auto 0;
    gap: 16px;
    transform: none;
    isolation: isolate;
  }

  .factory-video-grid.is-visible::after {
    position: absolute;
    z-index: 4;
    top: 0;
    bottom: 0;
    left: 0;
    width: 1px;
    background: rgba(22, 104, 216, .58);
    pointer-events: none;
    content: "";
    animation: fv-grid-scan .76s cubic-bezier(.2, .7, .2, 1) .08s both;
  }

  .factory-video-grid .factory-video-card {
    grid-template-rows: minmax(0, 1fr) auto;
    align-content: stretch;
    min-height: 0;
    aspect-ratio: auto;
    padding: 0;
    border-radius: 4px;
    background: #e7eff7;
    box-shadow: 0 2px 8px rgba(14, 35, 60, .04);
    transition: transform .2s cubic-bezier(.2, .72, .2, 1), border-color .2s ease, box-shadow .2s ease;
  }

  .factory-video-grid.fv-motion-ready .factory-video-card {
    opacity: 0;
    clip-path: inset(12% 0 0 0);
  }

  .factory-video-grid.fv-motion-ready.is-visible .factory-video-card {
    animation: fv-card-enter .52s cubic-bezier(.16, .72, .2, 1) both;
    animation-delay: calc(var(--fv-order, 0) * 45ms);
  }

  .factory-video-grid .factory-video-card::before {
    position: absolute;
    z-index: 4;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #1683df;
    transform: scaleX(0);
    transform-origin: left center;
    pointer-events: none;
    content: "";
    transition: transform .28s cubic-bezier(.2, .72, .2, 1);
  }

  .factory-video-grid .factory-video-card:hover,
  .factory-video-grid .factory-video-card:focus-visible {
    z-index: 2;
    transform: translateY(-6px);
    border-color: #1683df;
    box-shadow: 0 16px 32px rgba(14, 35, 60, .12);
  }

  .factory-video-grid .factory-video-card:hover::before,
  .factory-video-grid .factory-video-card:focus-visible::before {
    transform: scaleX(1);
  }

  .factory-video-grid .fv-play {
    top: 50%;
    width: 52px;
    height: 52px;
    color: #1668d8;
    font-size: 22px;
    background: rgba(255, 255, 255, .92);
    border-color: rgba(22, 104, 216, .5);
    transition: color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s cubic-bezier(.2, .72, .2, 1);
  }

  .factory-video-grid .fv-play::after {
    position: absolute;
    inset: -1px;
    border: 1px solid rgba(22, 104, 216, .42);
    border-radius: 50%;
    opacity: 0;
    content: "";
  }

  .factory-video-grid .factory-video-card:hover .fv-play,
  .factory-video-grid .factory-video-card:focus-visible .fv-play {
    color: #fff;
    background: #1256c9;
    border-color: #1256c9;
    transform: translate(-50%, -50%) scale(1.05);
  }

  .factory-video-grid .factory-video-card:hover .fv-play::after,
  .factory-video-grid .factory-video-card:focus-visible .fv-play::after {
    animation: fv-play-ring .5s cubic-bezier(.2, .72, .2, 1) both;
  }

  .factory-video-grid h3 {
    grid-row: 2;
    display: flex;
    min-height: 72px;
    margin: 0;
    padding: 11px 15px;
    align-items: center;
    border-top: 1px solid #d4e0eb;
    background: #f5f8fb;
    font-size: clamp(14px, .94vw, 17px);
    line-height: 1.35;
  }

  .factory-video-grid .has-video h3 {
    color: #16283b;
    background: #f5f8fb;
  }

  .factory-video-grid .fv-stage.show ~ .fv-play {
    opacity: 0;
  }
}

@keyframes fv-title-enter {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fv-card-enter {
  from { opacity: 0; clip-path: inset(12% 0 0 0); }
  to { opacity: 1; clip-path: inset(0 0 0 0); }
}

@keyframes fv-grid-scan {
  0% { left: 0; opacity: 0; }
  12% { opacity: 1; }
  82% { opacity: .72; }
  100% { left: 100%; opacity: 0; }
}

@keyframes fv-play-ring {
  from { opacity: .55; transform: scale(1); }
  to { opacity: 0; transform: scale(1.42); }
}

@media (prefers-reduced-motion: reduce) {
  #factory .heading h2,
  .factory-video-grid.is-visible::after,
  .factory-video-grid.fv-motion-ready.is-visible .factory-video-card,
  .factory-video-grid .factory-video-card:hover .fv-play::after,
  .factory-video-grid .factory-video-card:focus-visible .fv-play::after {
    animation: none !important;
  }

  .factory-video-grid.fv-motion-ready .factory-video-card {
    opacity: 1;
    clip-path: none;
  }
}