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button[aria-pressed=true]{background:var(--zey);color:#fff;border-color:var(--zey)}@media (max-width:900px){.co-layout,.co-player{grid-template-columns:minmax(0,1fr)}.co-side,.co-nav{max-height:none;position:static}.co-side{order:-1}}@media (max-width:520px){.co-filters{padding:12px}.co-cover span{font-size:2.2rem}.co-certcard{padding:18px}}