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.fifth-flat-catalog{padding:40px 0 55px}.fifth-flat-catalog .section-header{text-align:left;margin-bottom:24px}.fifth-flat-filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:27px}.fifth-flat-filters button{border:1px solid #e3ebf2;background:#f7f9fb;padding:11px 18px;font-size:13px;color:#849dad;border-radius:5px;cursor:pointer}.fifth-flat-filters button[aria-pressed=true]{background:#245c8a;border-color:#245c8a;color:#fff}.fifth-flat-products [hidden]{display:none!important}@media(max-width:640px){.fifth-flat-filters{gap:7px}.fifth-flat-filters button{font-size:11px;padding:10px 12px}}


/* 第五站：鲜明宝蓝与纯白 */
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/* 高对比商城视觉：纯白页面，墨色正文，深蓝重点 */
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