/* ==========================================================================
   首页 · 产品中心分类轮播（3 张一屏，悬浮展开）
   ========================================================================== */

.pcat {
  position: relative;
  margin-top: 34px;
  padding: 26px 0;
}

.pcat__viewport {
  overflow: hidden;
  padding: 26px 0;
  margin: -26px 0;
}

.pcat__track {
  display: flex;
  gap: 30px;
  transition: transform .5s var(--ease, cubic-bezier(.4, 0, .2, 1));
}

/* ---------- 卡片 ---------- */
.pcat-card {
  position: relative;
  flex: 0 0 calc((100% - 90px) / 4);
  display: block;
  aspect-ratio: 480 / 700;
  background: #f3f7fc;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 22px rgba(15, 45, 90, .06);
  transition: box-shadow .3s var(--ease, ease), transform .3s var(--ease, ease);
}

.pcat-card:hover,
.pcat-card.is-hover {
  box-shadow: 0 18px 44px rgba(15, 45, 90, .16);
  transform: translateY(-4px);
}

.pcat-card__media {
  position: absolute;
  inset: 0;
  display: block;
}

.pcat-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease, ease);
}

.pcat-card:hover .pcat-card__media img,
.pcat-card.is-hover .pcat-card__media img { transform: scale(1.03); }

/* 默认态：底部白色胶囊名称 */
.pcat-card__base {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 26px;
  display: flex;
  justify-content: center;
  transition: opacity .3s var(--ease, ease), transform .3s var(--ease, ease);
}

.pcat-card__label {
  display: block;
  width: 100%;
  padding: 16px 10px;
  background: #fff;
  border-radius: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-title, #10233f);
  text-align: center;
  letter-spacing: .5px;
}

/* 悬浮态：白色内容面板 */
.pcat-card__panel {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 24px 26px 22px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 14px 34px rgba(15, 45, 90, .18);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .3s var(--ease, ease),
              transform .3s var(--ease, ease),
              visibility .3s var(--ease, ease);
}

.pcat-card:hover .pcat-card__panel,
.pcat-card.is-hover .pcat-card__panel,
.pcat-card:focus-visible .pcat-card__panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.pcat-card:hover .pcat-card__base,
.pcat-card.is-hover .pcat-card__base,
.pcat-card:focus-visible .pcat-card__base {
  opacity: 0;
  transform: translateY(10px);
}

.pcat-card__title {
  display: block;
  font-size: 26px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--c-title, #10233f);
}

.pcat-card__desc {
  display: block;
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-muted, #6b7b90);
}

.pcat-card__btn {
  display: inline-block;
  margin-top: 18px;
  padding: 9px 26px;
  background: #111;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  transition: background-color .2s ease;
}

.pcat-card:hover .pcat-card__btn { background: #000; }

/* ---------- 左右箭头 ---------- */
.pcat__arrow {
  position: absolute;
  top: 50%;
  z-index: 5;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-top: -21px;
  padding: 0;
  background: #c9d2dd;
  border: 0;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background-color .2s ease, opacity .2s ease;
}

.pcat__arrow:hover { background: var(--c-brand, #0b4f9c); }
.pcat__arrow:disabled { opacity: .45; cursor: default; }
.pcat__arrow:disabled:hover { background: #c9d2dd; }

.pcat__arrow--prev { left: -21px; }
.pcat__arrow--next { right: -21px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1280px) {
  .pcat-card { flex: 0 0 calc((100% - 60px) / 3); }
}

@media (max-width: 1024px) {
  .pcat-card { flex: 0 0 calc((100% - 30px) / 2); }
  .pcat__arrow--prev { left: -12px; }
  .pcat__arrow--next { right: -12px; }
}

@media (max-width: 768px) {
  .pcat-card { flex: 0 0 100%; }
  .pcat__arrow { width: 36px; height: 36px; margin-top: -18px; }
  .pcat-card__label { font-size: 18px; padding: 13px 8px; }
  .pcat-card__title { font-size: 20px; }
  .pcat-card__panel { padding: 18px 18px 16px; }
}