:root {
    --collection-entry-gap: 5px;
    --collection-entry-mobile-padding: 9px;
    --collection-entry-desktop-padding: 5px 0;
    --collection-entry-mobile-title-bottom: 9px;
    --collection-entry-desktop-title-bottom: 33px;
    --collection-entry-mobile-title-size: 10px;
    --collection-entry-desktop-title-size: 14px;
    --collection-entry-title-color-secondary: #959595;
    --collection-entry-transition-duration: 300ms;
    --collection-entry-transform-duration: 500ms;
}

.bb-collection-entries {
    padding: var(--collection-entry-mobile-padding);
    background-color: rgb(var(--color-background));
    color: rbg(var(--color-text));
}

/* 响应式容器 */
.bb-collection-entries__items--a {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--collection-entry-gap);
}

.bb-collection-entries__items--b {
    display: flex;
    margin-top: var(--collection-entry-gap);
    gap: var(--collection-entry-gap);
}

.bb-collection-entries__items--b .collection-entries__item {
    flex: 1;
}

/* 入口项通用样式 */
.bb-collection-entries__item {
    position: relative;
    display: block;
}

.bb-collection-entries__item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--collection-entry-transform-duration);
}

/* 标题通用样式 */
.bb-collection-entries__item-title {
    position: absolute;
    bottom: var(--collection-entry-mobile-title-bottom);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    width: 100%;
    text-align: center;
    line-height: 0.6em;
    font-size: var(--collection-entry-mobile-title-size);
}

/* 分组A的标题样式 */
.bb-collection-entries__items--a .bb-collection-entries__item-title {
    color: var(--color-group-a);
}

/* 分组B的标题样式 */
.bb-collection-entries__items--b .bb-collection-entries__item-title {
    color: var(--collection-entry-title-color-secondary);
}

/* 桌面端样式 */
@media (min-width: 960px) {
    .bb-collection-entries {
        padding: var(--collection-entry-desktop-padding);
    }
    
    .bb-collection-entries__item {
        overflow: hidden;
    }
    
    .bb-collection-entries__item:hover img {
        transform: scale(1.07);
    }
    
    .bb-collection-entries__items--a {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .bb-collection-entries__item-title {
        bottom: var(--collection-entry-desktop-title-bottom);
        font-size: var(--collection-entry-desktop-title-size);
        transition: all var(--collection-entry-transition-duration);
    }
    
    .bb-collection-entries__items--b .bb-collection-entries__item-title {
        color: var(--color-group-b);
        font-weight: 500;
    }
}