/* 系列大卡片 */
        .collection-card {
            background: var(--color-white); border-radius: var(--border-radius);
            overflow: hidden; box-shadow: var(--shadow-soft); margin-bottom: 40px;
            transition: var(--transition-smooth); display: flex; flex-wrap: wrap;
        }
        .collection-card:last-child { margin-bottom: 0; }
        .collection-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-3px); }
        .collection-card .card-image {
            flex: 0 0 45%; min-height: 360px;
            background-size: cover; background-position: center; position: relative;
            display: flex; align-items: flex-end; padding: 24px;
        }
        .collection-card .card-image::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.35) 0%, transparent 45%);
            z-index: 1;
        }
        .collection-card .card-image .image-title {
            position: relative; z-index: 2; color: #fff;
            font-family: var(--font-heading); font-size: 1.8rem; font-weight: 600;
            letter-spacing: 0.05em; text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .collection-card .card-content {
            flex: 1; padding: 36px 32px; display: flex; flex-direction: column; justify-content: center;
        }
        .collection-card .card-content .series-name {
            font-size: 0.75rem; letter-spacing: 0.08em; color: var(--color-mid);
            text-transform: uppercase; margin-bottom: 6px;
        }
        .collection-card .card-content h3 {
            font-family: var(--font-heading); font-size: 1.4rem; font-weight: 600;
            color: var(--color-dark); letter-spacing: 0.04em; margin-bottom: 10px;
        }
        .collection-card .card-content .series-desc {
            font-size: 0.9rem; color: var(--color-mid-dark); line-height: 1.7; margin-bottom: 16px;
        }
        .collection-card .card-content .series-features {
            display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px;
        }
        .collection-card .card-content .series-features .feat-tag {
            background: var(--color-bg-lighter); color: var(--color-dark);
            font-size: 0.8rem; font-weight: 500; padding: 5px 14px; border-radius: 20px;
            letter-spacing: 0.03em; border: 1px solid rgba(160, 160, 160, 0.15);
        }
        .collection-card .card-content .btn-explore {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--color-dark); color: #fff; border: none; border-radius: 50px;
            padding: 10px 24px; font-size: 0.85rem; font-weight: 500; letter-spacing: 0.04em;
            transition: var(--transition-smooth); align-self: flex-start;
        }
        .collection-card .card-content .btn-explore:hover { background: #1a1a1a; color: #fff; }

        /* 交替布局 */
        .collection-card.reverse { flex-direction: row-reverse; }