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var(--border);transition:var(--transition);position:relative;overflow:hidden;}.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--cyan));transform:scaleX(0);transform-origin:left;transition:var(--transition);}.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:transparent;}.product-card:hover::before{transform:scaleX(1);}.product-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--blue);background:linear-gradient(135deg,rgba(37,99,235,0.1),rgba(6,182,212,0.1));}.product-icon svg{width:28px;height:28px;}.product-card h3{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:12px;}.product-card p{font-size:14px;color:var(--text-soft);line-height:1.7;margin-bottom:16px;}.product-tags{display:flex;flex-wrap:wrap;gap:8px;}.product-tag{font-size:12px;padding:4px 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var(--border);}.filter-label{min-width:48px;font-size:14px;font-weight:600;color:var(--primary);padding-top:6px;}.filter-options{display:flex;flex-wrap:wrap;gap:8px;flex:1;}.filter-btn{padding:6px 14px;border:1px solid var(--border);border-radius:6px;background:white;color:var(--text-soft);font-size:13px;cursor:pointer;transition:var(--transition);}.filter-btn:hover:not(:disabled){border-color:var(--blue);color:var(--blue);}.filter-btn.active{background:linear-gradient(135deg,var(--blue),var(--cyan));color:white;border-color:transparent;}.filter-btn:disabled{color:var(--text-light);background:var(--bg-soft);cursor:not-allowed;border-style:dashed;}.filter-letter{min-width:32px;padding:6px 8px;text-align:center;font-weight:600;}.filter-divider{width:100%;height:0;}.filter-brand-name{font-weight:500;}.product-list-header{display:grid;grid-template-columns:100px 2fr 120px 100px 160px 140px;gap:16px;padding:14px 24px;background:#F1F5F9;border-radius:12px 12px 0 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