/* ===== 工厂环境 图片墙 ===== */
.factory-section { margin-bottom: 56px; }
.factory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.factory-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background: #eef2f7;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
  box-shadow: 0 2px 10px rgba(20, 40, 80, .07);
  transition: transform .32s ease, box-shadow .32s ease;
  display: block;
  text-decoration: none;
}
.factory-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 26px rgba(20, 40, 80, .18);
}
.factory-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.factory-item:hover img { transform: scale(1.07); }
.factory-item .fi-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 14px 11px;
  background: linear-gradient(transparent, rgba(8, 22, 48, .78));
  color: #fff; font-size: 13.5px; letter-spacing: .4px;
  opacity: 0; transform: translateY(8px);
  transition: opacity .3s ease, transform .3s ease;
}
.factory-item:hover .fi-cap { opacity: 1; transform: translateY(0); }
/* 首图占 2x2 格 */
.factory-item.fi-lead { grid-column: span 2; grid-row: span 2; }

.factory-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; margin: 30px 0 46px;
  border-radius: 10px; overflow: hidden;
  background: linear-gradient(135deg, #14508f, #1a7fc4);
}
.factory-stats .fs-item { padding: 26px 18px; text-align: center; color: #fff; }
.factory-stats .fs-item + .fs-item { border-left: 1px solid rgba(255,255,255,.18); }
.factory-stats .fs-num { font-size: 27px; font-weight: 700; line-height: 1.1; }
.factory-stats .fs-num small { font-size: 14px; font-weight: 400; margin-left: 2px; }
.factory-stats .fs-lbl { font-size: 13px; opacity: .9; margin-top: 6px; letter-spacing: .5px; }

.factory-lightbox {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(6, 14, 30, .92);
  display: none; align-items: center; justify-content: center;
  padding: 40px;
}
.factory-lightbox.on { display: flex; }
.factory-lightbox img {
  max-width: 100%; max-height: 100%;
  border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.factory-lightbox .fl-close {
  position: absolute; top: 22px; right: 30px;
  color: #fff; font-size: 34px; line-height: 1;
  cursor: pointer; opacity: .75; background: none; border: 0;
}
.factory-lightbox .fl-close:hover { opacity: 1; }
.factory-lightbox .fl-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  color: #fff; font-size: 40px; line-height: 1;
  background: rgba(255,255,255,.12); border: 0; cursor: pointer;
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: .8; transition: background .2s;
}
.factory-lightbox .fl-nav:hover { background: rgba(255,255,255,.26); }
.factory-lightbox .fl-prev { left: 26px; }
.factory-lightbox .fl-next { right: 26px; }

@media (max-width: 992px) {
  .factory-grid { grid-template-columns: repeat(3, 1fr); }
  .factory-stats { grid-template-columns: repeat(2, 1fr); }
  .factory-stats .fs-item + .fs-item { border-left: 0; }
  .factory-stats .fs-item { border-top: 1px solid rgba(255,255,255,.18); }
}
@media (max-width: 640px) {
  .factory-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .factory-item.fi-lead { grid-column: span 2; grid-row: span 1; }
  .factory-lightbox { padding: 14px; }
  .factory-lightbox .fl-nav { width: 42px; height: 42px; font-size: 30px; }
  .factory-lightbox .fl-prev { left: 8px; }
  .factory-lightbox .fl-next { right: 8px; }
}