.period-page-nav[data-astro-cid-mravahkz]{z-index:20;border:1px solid color-mix(in srgb, var(--gold) 29%, var(--line));backdrop-filter:blur(12px);background:#fffdf8f0;border-radius:14px;align-items:center;gap:16px;min-width:0;margin:22px 0 26px;padding:9px 12px 9px 17px;display:flex;position:sticky;top:76px;box-shadow:0 5px 18px #2f2d2511}.period-page-nav__label[data-astro-cid-mravahkz]{color:var(--muted);white-space:nowrap;flex:none;font-size:.73rem;font-weight:800}.period-page-nav__links[data-astro-cid-mravahkz]{scrollbar-width:thin;overscroll-behavior-x:contain;flex:1;align-items:center;gap:5px;min-width:0;display:flex;overflow-x:auto}.period-page-nav__links[data-astro-cid-mravahkz] a[data-astro-cid-mravahkz]{min-height:36px;color:var(--ink);white-space:nowrap;border-radius:999px;flex:none;align-items:center;padding:7px 12px;font-size:.76rem;font-weight:700;line-height:1.4;text-decoration:none;display:inline-flex}.period-page-nav__links[data-astro-cid-mravahkz] a[data-astro-cid-mravahkz]:hover{background:var(--accent-soft);color:var(--accent)}.period-page-nav__links[data-astro-cid-mravahkz] a[data-astro-cid-mravahkz]:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.period-guide[data-astro-cid-mravahkz][id],.period-overview[data-astro-cid-mravahkz][id],.period-topic-index[data-astro-cid-mravahkz][id],.period-test-link[data-astro-cid-mravahkz][id],.period-primary-timeline[data-astro-cid-mravahkz][id],.period-references[data-astro-cid-mravahkz][id]{scroll-margin-top:170px}.period-back-link[data-astro-cid-mravahkz]{border:1px solid color-mix(in srgb, var(--gold) 28%, var(--line));min-height:42px;color:var(--muted);background:#fffdf8;border-radius:999px;align-items:center;gap:9px;margin-bottom:26px;padding:9px 16px;font-size:.78rem;font-weight:700;text-decoration:none;transition:transform .16s,border-color .16s,box-shadow .16s;display:inline-flex}.period-back-link[data-astro-cid-mravahkz]:hover{border-color:color-mix(in srgb, 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