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sans-serif);font-size:var(--step--1);font-weight:800;line-height:1;text-transform:uppercase;background:var(--surface-card, var(--bg))}.world-isbe-top-link{margin:1.2rem 0 0;font-family:var(--font-ui, sans-serif);font-size:var(--step--1);font-weight:800;letter-spacing:.1em;text-transform:uppercase}.world-isbe-top-link a{display:inline-flex;align-items:center;min-height:1.9rem;padding:.25em .75em;border:1px solid var(--accent-subtle, var(--border));border-radius:999px;color:var(--accent);background:var(--accent-subtle, transparent);text-decoration:none}.world-isbe-top-link a:hover,.world-isbe-top-link a:focus-visible{border-color:var(--accent);text-decoration:none}.world-place-rail{position:sticky;top:2rem}.world-rail-card{border:1px solid var(--border);border-radius:6px;padding:1.25rem;margin-bottom:1.25rem;background:var(--surface-card, var(--bg))}.world-rail-heading{font-size:var(--step--1);font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:0 0 1rem}.world-rail-stat{font-size:var(--step-0);margin-bottom:.35rem}.world-rail-stat strong{font-weight:700}.world-rail-coords{font-size:var(--step--2);color:var(--text-muted);font-family:var(--font-mono, monospace);margin-top:.5rem}.world-rail-source-list{list-style:none;padding:0;margin:0}.world-rail-source-item{display:flex;flex-direction:column;gap:.2rem;font-size:var(--step--1);margin-bottom:.5rem;color:var(--text-muted)}.world-rail-source-item span:first-child{color:var(--text);font-weight:700}.world-rail-source-item a{color:var(--accent)}.world-browse-table{width:100%;border-collapse:collapse;font-size:var(--step--1)}.world-browse-table th{text-align:left;font-size:var(--step--2);font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);padding:.5rem .75rem;border-bottom:2px solid var(--border)}.world-browse-table td{padding:.6rem .75rem;border-bottom:1px solid var(--border);vertical-align:top}.world-browse-table tr:hover td{background:var(--hover-bg, rgba(0, 0, 0, .02))}.world-browse-name-link{font-weight:600;color:var(--accent);text-decoration:none}.world-browse-name-link:hover{text-decoration:underline}.world-browse-region{color:var(--text-muted)}.world-browse-books{text-align:right;color:var(--text-muted)}.world-region-group{margin-bottom:2.5rem}.world-region-label{font-size:var(--step--1);font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:0 0 .75rem;display:flex;align-items:center;gap:.5rem}.world-region-count{font-weight:400}.world-family-nav{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:2.5rem}.world-family-chip{display:inline-flex;align-items:center;gap:.4rem;padding:.5em 1.1em;border:1px solid var(--border);border-radius:999px;font-size:var(--step--1);font-weight:600;text-decoration:none;color:var(--text);transition:border-color .15s,background .15s}.world-family-chip:hover{border-color:var(--accent);background:var(--accent-subtle, transparent);color:var(--accent);text-decoration:none}.world-family-chip.active{border-color:var(--accent);background:var(--accent-subtle, transparent);color:var(--accent)}.world-family-chip-count{font-size:var(--step--2);color:var(--text-muted);font-weight:400}.world-coming-soon{padding:1.75rem;border:1px dashed var(--border);border-radius:6px;text-align:center;color:var(--text-muted);font-size:var(--step--1);margin-bottom:1.5rem}@media(max-width:860px){.world-period-layout{grid-template-columns:1fr}.world-period-rail{position:static;max-height:none;margin-top:2rem;padding-top:1.75rem;border-top:1px solid var(--border)}.world-period-overview-grid{grid-template-columns:1fr}}@media(max-width:720px){.world-place-layout{grid-template-columns:1fr}.world-place-rail{position:static;margin-top:2rem}.world-place-grid{grid-template-columns:1fr 1fr}.world-period-card-inner,.world-period-detail-grid{grid-template-columns:1fr}.world-period-card-action{justify-self:end}.world-period-page-title{font-size:var(--step-3)}.world-period-nav{grid-template-columns:1fr}.world-period-nav-link.next{text-align:left}.world-period-nav-up{justify-self:start}.world-isbe-header{flex-direction:column}.world-article-contents-summary{align-items:flex-start}.world-article-contents-body{max-height:16rem}}@media(max-width:480px){.world-place-grid{grid-template-columns:1fr}}