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ease}.gallery-item:active{transform:scale(.95)}.sidebar{-webkit-overflow-scrolling:touch;scrollbar-width:thin}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-track{background:#ffffff1a;border-radius:3px}.sidebar::-webkit-scrollbar-thumb{background:#ffffff4d;border-radius:3px}.sidebar::-webkit-scrollbar-thumb:hover{background:#ffffff80}}@media print{.sidebar,.shop-links,.footer{display:none}.main-content{margin-left:0}.product-card{break-inside:avoid;box-shadow:none;border:1px solid #ccc}}.image-gallery{margin-bottom:4rem}.gallery-swiper{margin-top:2rem;position:relative;max-width:1200px;margin-left:auto;margin-right:auto}.gallery-swiper .swiper-slide{height:auto}.gallery-swiper .swiper-button-next,.gallery-swiper .swiper-button-prev{color:#667eea;background:#ffffffe6;width:50px;height:50px;border-radius:50%;box-shadow:0 4px 20px #0000001a}.gallery-swiper .swiper-button-next:hover,.gallery-swiper .swiper-button-prev:hover{background:#fff;transform:scale(1.1)}.gallery-swiper .swiper-pagination{bottom:20px}.gallery-swiper .swiper-pagination-bullet{background:#667eea;opacity:.5}.gallery-swiper .swiper-pagination-bullet-active{opacity:1;background:#667eea}.gallery-header{text-align:center;margin-bottom:3rem}.gallery-header h2{font-size:2.5rem;font-weight:600;color:#1e293b;margin-bottom:1rem;display:flex;align-items:center;justify-content:center;gap:1rem}.gallery-header h2 i{color:#667eea}.gallery-header p{font-size:1.2rem;color:#64748b;max-width:600px;margin:0 auto}.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;max-width:1200px;margin:0 auto}.gallery-item{position:relative;border-radius:15px;overflow:hidden;box-shadow:0 10px 30px #0000001a;transition:transform .3s ease,box-shadow .3s ease;aspect-ratio:1}.gallery-item.large{grid-column:span 2;grid-row:span 2}.gallery-item:hover{transform:translateY(-10px);box-shadow:0 20px 40px #0003}.gallery-image{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.gallery-item:hover .gallery-image{transform:scale(1.1)}.gallery-overlay{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#000c);color:#fff;padding:2rem 1.5rem 1.5rem;transform:translateY(100%);transition:transform .3s ease}.gallery-item:hover .gallery-overlay{transform:translateY(0)}.gallery-overlay h3{font-size:1.3rem;font-weight:600;margin-bottom:.5rem}.gallery-overlay p{font-size:.9rem;opacity:.9;line-height:1.4}@media (max-width: 1024px){.gallery-grid{grid-template-columns:repeat(3,1fr)}.gallery-item.large{grid-column:span 1;grid-row:span 1}}@media (max-width: 768px){.gallery-grid{grid-template-columns:repeat(2,1fr);gap:1rem}.gallery-header h2{font-size:2rem}}@media (max-width: 480px){.gallery-grid{grid-template-columns:1fr}.gallery-item.large{grid-column:span 1;grid-row:span 1}}@media (max-width: 768px){.section{scroll-margin-top:64px}.section>h2{position:sticky;top:0;z-index:50;background:#fffffff2;-webkit-backdrop-filter:saturate(180%) blur(8px);backdrop-filter:saturate(180%) blur(8px);margin:0 -1rem 1rem;padding:.85rem 1rem;box-shadow:0 6px 16px #00000014;border-bottom:1px solid #e2e8f0;text-align:left}#can-thiet>h2{border-left:6px solid #10b981}#nen-co>h2{border-left:6px solid #f59e0b}#other-option>h2{border-left:6px solid #64748b}#khong-nen-mua>h2{border-left:6px solid #ef4444}}