.kb{padding-top:52px}.kb__inner{max-width:1200px;margin:0 auto}.kb__header{text-align:center;margin-bottom:48px}.kb__title{color:#0a0a0a;margin-bottom:16px;font-size:36px;font-weight:700}@media (max-width:768px){.kb__title{font-size:30px}}.kb__subtitle{color:#666;max-width:600px;margin:0 auto;font-size:18px;line-height:1.6}.kb__categories{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:40px;display:flex}.kb__category{cursor:pointer;color:#666;background-color:#f7f7f7;border-radius:9999px;padding:8px 16px;font-size:14px;font-weight:500;transition:background-color .2s}.kb__category:hover{background-color:#e5e5e5}.kb__category--active{color:#fff;background-color:#3b82f6}.kb__grid{grid-template-columns:1fr;gap:24px;display:grid}@media (min-width:768px){.kb__grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.kb__grid{grid-template-columns:repeat(3,1fr)}}.kb__empty{text-align:center;padding:80px 0}.kb__empty-icon{margin-bottom:16px;font-size:60px;line-height:1;display:block}.kb__empty-text{color:#666;font-size:18px}