/* 最终合集轮播覆盖：三张同屏，主卡居中，切换键置于主卡两侧。 */
.collection-carousel {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: none;
  overflow: hidden;
  margin-bottom: clamp(58px, 8vw, 104px);
}

.collection-carousel__viewport { overflow: hidden; padding: 14px 0 44px; }

.collection-carousel__track {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(500px, 1.4fr) minmax(260px, 0.7fr);
  align-items: center;
  gap: clamp(16px, 2vw, 32px);
  width: 115%;
  margin-left: -7.5%;
}

.collection-cover {
  z-index: 0;
  min-height: 0;
  height: clamp(240px, 26vw, 360px);
  box-shadow: 0 12px 30px rgba(23, 23, 25, 0.12);
  animation: none;
  transition: none;
}

.collection-cover--active { z-index: 1; height: clamp(240px, 26vw, 360px); box-shadow: 0 20px 48px rgba(23, 23, 25, 0.2); }
.collection-cover--side { opacity: 0.94; }
.collection-cover__mosaic { min-height: 0; }

.collection-cover__image {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(.2,.7,.2,1);
}

.collection-cover:hover .collection-cover__image,
.collection-cover:focus-visible .collection-cover__image { transform: scale(1.035); }

.collection-cover::after { z-index: 0; }

.collection-cover__overlay {
  inset: 0;
  align-content: center;
  align-items: center;
  justify-items: center;
  padding: 24px;
  text-align: center;
}

.collection-cover__overlay strong { font-size: clamp(28px, 3.15vw, 32px); }
.collection-cover__description { font-size: 10px; }
.collection-cover--side .collection-cover__overlay { inset: 0; gap: 6px; }
.collection-cover--side .collection-cover__overlay strong { font-size: clamp(20px, 2.1vw, 26px); }
.collection-cover--side .collection-cover__description { display: none; }

.collection-cover__open {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
  width: min(100%, 122px);
  margin-top: 6px;
  padding: 6px 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.36) 0%, rgba(255, 255, 255, 0.1) 42%, rgba(255, 255, 255, 0.02) 62%, rgba(255, 255, 255, 0.2) 100%), rgba(16, 18, 22, 0.26);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.58), inset 0 -1px 0 rgba(255, 255, 255, 0.12), 0 12px 30px rgba(0, 0, 0, 0.2);
  color: #ffffff;
  backdrop-filter: blur(18px) saturate(165%);
  opacity: 1;
  transform: none;
  transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.collection-cover__open::before,
.collection-carousel__arrow::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(118deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.06) 35%, transparent 58%, rgba(255, 255, 255, 0.2));
  opacity: 0.8;
  pointer-events: none;
}

.collection-cover:hover .collection-cover__open,
.collection-cover:focus-visible .collection-cover__open {
  border-color: rgba(255, 255, 255, 0.86);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.44), rgba(255, 255, 255, 0.12) 45%, rgba(255, 255, 255, 0.26)), rgba(16, 18, 22, 0.36);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72), inset 0 -1px 0 rgba(255, 255, 255, 0.16), 0 16px 34px rgba(0, 0, 0, 0.26);
  opacity: 1;
  transform: none;
}

.collection-cover__open-english {
  position: relative;
  z-index: 1;
  align-self: end;
  color: rgba(255, 255, 255, 0.64);
  font-size: 6px;
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1;
}

.collection-cover__open-label {
  position: relative;
  z-index: 1;
  align-self: start;
  margin-top: 3px;
  font-size: 10px;
  font-weight: 550;
  letter-spacing: 0.05em;
  line-height: 1.1;
}

.collection-carousel__controls {
  position: absolute;
  z-index: 20;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(62vw, 700px);
  margin: 0;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.collection-carousel__arrow {
  position: relative;
  z-index: 21;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  min-width: 42px;
  height: 42px;
  padding: 5px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.36) 0%, rgba(255, 255, 255, 0.1) 44%, rgba(255, 255, 255, 0.02) 68%, rgba(255, 255, 255, 0.18) 100%), rgba(15, 17, 21, 0.28);
  color: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.58), inset 0 -1px 0 rgba(255, 255, 255, 0.12), 0 10px 26px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px) saturate(165%);
  pointer-events: auto;
  font-size: 12px;
  transition: none;
}

.collection-carousel__arrow:hover {
  border-color: rgba(255, 255, 255, 0.9);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.13) 44%, rgba(255, 255, 255, 0.28)), rgba(15, 17, 21, 0.36);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76), inset 0 -1px 0 rgba(255, 255, 255, 0.16), 0 14px 30px rgba(0, 0, 0, 0.3);
  transform: none;
}

.collection-carousel__arrow-icon {
  position: relative;
  z-index: 1;
  display: block;
  font-size: 16px;
  line-height: 1;
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .collection-cover__open,
  .collection-carousel__arrow,
  .collection-carousel__arrow-icon { transition: none; }
}

@media (max-width: 760px) {
  .collection-carousel__track { width: 100%; margin-left: 0; grid-template-columns: 1fr; }
  .collection-cover--side { display: none; }
  .collection-cover--active { height: min(112vw, 490px); }
  .collection-carousel__controls { width: calc(100% - 30px); }
  .collection-carousel__arrow { width: 48px; height: 48px; }
}