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.site-head.is-scrolled{box-shadow:0 8px 26px rgba(5,28,64,.09)}
.back-to-top{position:fixed;right:22px;bottom:22px;z-index:80;width:46px;height:46px;border:0;border-radius:50%;background:var(--blue);color:#fff;font-size:22px;box-shadow:var(--shadow);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:.2s}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}
.article-pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:28px 0}
.article-pager a{padding:16px;border:1px solid var(--line);border-radius:13px;color:var(--blue);font-size:13px;font-weight:700}
@media(max-width:580px){.article-pager{grid-template-columns:1fr}.back-to-top{bottom:16px;right:16px}}