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var(--color-border);border-radius:8px;padding:1.5rem;text-decoration:none;transition:border-color .15s,transform .15s;display:flex;flex-direction:column}.tier-1[data-astro-cid-eyfhihg6] .book-card[data-astro-cid-eyfhihg6]{border-left:3px solid #22c55e}.tier-2[data-astro-cid-eyfhihg6] .book-card[data-astro-cid-eyfhihg6]{border-left:3px solid #3b82f6}.tier-3[data-astro-cid-eyfhihg6] .book-card[data-astro-cid-eyfhihg6]{border-left:3px solid #a855f7}.tier-4[data-astro-cid-eyfhihg6] .book-card[data-astro-cid-eyfhihg6]{border-left:3px solid #6b7280}.book-card[data-astro-cid-eyfhihg6]:hover{border-color:var(--color-primary);transform:translateY(-2px)}.book-meta[data-astro-cid-eyfhihg6]{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.book-year[data-astro-cid-eyfhihg6]{font-size:.8rem;color:var(--color-text-muted);background:var(--color-bg);padding:.25rem 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h2[data-astro-cid-eyfhihg6]{font-size:1.5rem;margin-bottom:.75rem}.crosswalk-cta[data-astro-cid-eyfhihg6] p[data-astro-cid-eyfhihg6]{color:var(--color-text-muted);max-width:500px;margin:0 auto 1.5rem;line-height:1.6}.crosswalk-link[data-astro-cid-eyfhihg6]{display:inline-block;background:var(--color-primary);color:#fff;padding:.75rem 1.5rem;border-radius:6px;font-weight:600;text-decoration:none;transition:background .15s}.crosswalk-link[data-astro-cid-eyfhihg6]:hover{background:var(--color-primary-dark)}@media(max-width:768px){.page-header[data-astro-cid-eyfhihg6] h1[data-astro-cid-eyfhihg6]{font-size:2rem}.books-grid[data-astro-cid-eyfhihg6]{grid-template-columns:1fr}.stats[data-astro-cid-eyfhihg6]{gap:1.5rem}.quick-nav[data-astro-cid-eyfhihg6]{flex-direction:column;align-items:flex-start}.nav-label[data-astro-cid-eyfhihg6]{margin-bottom:.5rem}}