/* 产品系列 */

/* 四大系列 */
.series-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.series-card .s-pic {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.series-card .s-pic img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.series-card .s-body {
    padding: 16px 18px 20px;
}

.series-card h3 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    display: inline-block;
}

.series-card .s-count {
    font-size: 11px;
    color: var(--brand);
    margin-left: 8px;
}

.series-card p {
    font-size: 12px;
    color: var(--gray);
    line-height: 1.9;
    margin-top: 8px;
}

/* 筛选 */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.filter-btn {
    padding: 8px 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 2px;
    font-size: 13px;
    color: var(--ink-soft);
    transition: all .2s;
}

.filter-btn em {
    font-style: normal;
    font-size: 11px;
    color: var(--tick);
    margin-left: 5px;
}

.filter-btn:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.filter-btn.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
}

.filter-btn.active em {
    color: rgba(255, 255, 255, .7);
}

/* 产品卡 */
/* 用 flex + 居中：卡片数不是列数整数倍时，末行自动居中，不会甩在左边 */
.pd-grid {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 22px;
}

.pd-grid .pd-card {
    flex: 0 0 calc((100% - 66px) / 4);
}

.pd-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color .2s, box-shadow .2s, transform .2s;
}

.pd-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 6px 18px rgba(11, 58, 114, .09);
    transform: translateY(-2px);
}

.pd-card .pd-pic {
    padding: 14px 14px 0;
}

.pd-card .pd-pic img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 2px;
}

.pd-card .pd-body {
    padding: 12px 18px 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.pd-card h3 {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pd-card .pd-tag {
    font-size: 12px;
    color: var(--gray);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pd-points {
    margin-top: 10px;
}

.pd-points li {
    position: relative;
    padding-left: 11px;
    font-size: 12px;
    color: var(--ink-soft);
    line-height: 1.9;
}

.pd-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 3px;
    height: 3px;
    background: var(--brand);
    border-radius: 50%;
}

.pd-spec {
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px dashed var(--line);
    font-size: 11px;
    color: var(--tick);
    letter-spacing: .3px;
}

.pd-points {
    margin-bottom: 12px;
}

.pd-card.hide {
    display: none;
}

.pd-empty {
    display: none;
    text-align: center;
    font-size: 13px;
    color: var(--gray);
    padding: 40px 0 0;
}

@media (max-width: 1100px) {
    .pd-grid .pd-card {
        flex: 0 0 calc((100% - 44px) / 3);
    }
}

@media (max-width: 860px) {
    .pd-grid .pd-card {
        flex: 0 0 calc((100% - 22px) / 2);
    }

    .series-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-btn {
        padding: 7px 14px;
        font-size: 12px;
    }
}

@media (max-width: 520px) {
    .pd-grid .pd-card {
        flex: 0 0 100%;
    }

    .series-grid {
        grid-template-columns: 1fr;
    }
}