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280px;gap:64px;align-items:start}.book-hero-text[data-astro-cid-c7vljymv]{max-width:720px}.book-meta[data-astro-cid-c7vljymv]{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-widest);text-transform:uppercase;color:var(--color-ink-mute);margin-bottom:24px}.book-year[data-astro-cid-c7vljymv],.book-domain[data-astro-cid-c7vljymv]{color:var(--color-forest)}.meta-dot[data-astro-cid-c7vljymv]{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5}.book-title-zh[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-weight:var(--weight-bold);font-size:clamp(40px,6vw,68px);line-height:1.08;letter-spacing:-.02em;margin:0 0 16px;color:var(--color-ink)}.book-title-en[data-astro-cid-c7vljymv]{font-family:var(--font-display);font-style:italic;font-weight:var(--weight-regular);font-size:22px;line-height:1.4;margin:0 0 8px;color:var(--color-ink-soft)}.book-author[data-astro-cid-c7vljymv]{font-family:var(--font-mono);font-size:14px;letter-spacing:var(--tracking-wider);color:var(--color-ink-mute);margin:0 0 24px}.book-tags[data-astro-cid-c7vljymv]{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:36px}.book-tag[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-size:13px;color:var(--color-ink-soft);background:var(--color-cream);border:1px solid var(--color-ink-faint);padding:4px 12px;border-radius:999px}.book-actions[data-astro-cid-c7vljymv]{display:flex;flex-wrap:wrap;gap:14px}.action-primary[data-astro-cid-c7vljymv],.action-secondary[data-astro-cid-c7vljymv]{font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-wider);text-decoration:none;padding:10px 20px;transition:all var(--duration-fast) var(--ease-out)}.action-primary[data-astro-cid-c7vljymv]{background:var(--color-forest);color:var(--color-cream);border:1.5px solid var(--color-forest)}.action-primary[data-astro-cid-c7vljymv]:hover{background:var(--color-ink);border-color:var(--color-ink)}.action-secondary[data-astro-cid-c7vljymv]{color:var(--color-forest);border:1.5px solid var(--color-forest)}.action-secondary[data-astro-cid-c7vljymv]:hover{background:var(--color-forest);color:var(--color-cream)}.book-cover[data-astro-cid-c7vljymv]{aspect-ratio:3 / 4;background:var(--color-cream);border:1px solid var(--color-ink-faint);overflow:hidden;max-width:280px;width:100%}.book-cover[data-astro-cid-c7vljymv] img[data-astro-cid-c7vljymv]{width:100%;height:100%;object-fit:cover}.book-body-section[data-astro-cid-c7vljymv]{padding:0 0 96px;background:var(--color-paper)}.book-body[data-astro-cid-c7vljymv]{max-width:740px;font-family:var(--font-serif);font-size:17px;line-height:1.85;color:var(--color-ink)}.book-body[data-astro-cid-c7vljymv] h2{font-family:var(--font-serif);font-weight:var(--weight-bold);font-size:32px;line-height:1.25;letter-spacing:-.015em;margin:72px 0 24px;padding-bottom:14px;border-bottom:1.5px solid var(--color-ink-faint);color:var(--color-ink)}.book-body[data-astro-cid-c7vljymv] h2:first-child{margin-top:0}.book-body[data-astro-cid-c7vljymv] h3{font-family:var(--font-serif);font-weight:var(--weight-bold);font-size:22px;line-height:1.4;margin:48px 0 16px;color:var(--color-forest)}.book-body[data-astro-cid-c7vljymv] p{margin:0 0 20px}.book-body[data-astro-cid-c7vljymv] blockquote{margin:28px 0;padding:8px 0 8px 24px;border-left:3px solid var(--color-forest);font-family:var(--font-display);font-style:italic;font-size:19px;line-height:1.65;color:var(--color-ink-soft)}.book-body[data-astro-cid-c7vljymv] strong{color:var(--color-ink);font-weight:var(--weight-bold)}.book-body[data-astro-cid-c7vljymv] hr{margin:40px 0;border:none;border-top:1px solid var(--color-ink-faint)}.book-body[data-astro-cid-c7vljymv] ul,.book-body[data-astro-cid-c7vljymv] ol{margin:0 0 20px;padding-left:24px}.book-body[data-astro-cid-c7vljymv] li{margin-bottom:10px}.book-body[data-astro-cid-c7vljymv] a{color:var(--color-forest);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}.book-body[data-astro-cid-c7vljymv] a:hover{color:var(--color-ink)}.linked-concepts-section[data-astro-cid-c7vljymv]{background:var(--color-cream);padding:96px 0;border-top:1px solid var(--color-ink-faint)}.section-header[data-astro-cid-c7vljymv]{max-width:720px;margin-bottom:48px}.section-eyebrow[data-astro-cid-c7vljymv]{display:block;font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-widest);text-transform:uppercase;color:var(--color-forest);margin-bottom:16px}.section-h2[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-weight:var(--weight-bold);font-size:clamp(28px,3.5vw,40px);line-height:1.2;letter-spacing:-.015em;margin:0 0 16px;color:var(--color-ink)}.section-lead[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-size:17px;line-height:1.7;color:var(--color-ink-soft);margin:0}.concepts-grid[data-astro-cid-c7vljymv]{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.concept-card[data-astro-cid-c7vljymv]{display:flex;flex-direction:column;gap:10px;padding:24px 22px;background:var(--color-paper);border:1px solid var(--color-ink-faint);text-decoration:none;color:inherit;transition:all var(--duration-normal) var(--ease-out)}.concept-card[data-astro-cid-c7vljymv]:hover{border-color:var(--color-forest);transform:translateY(-2px)}.concept-theme[data-astro-cid-c7vljymv]{font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-widest);text-transform:uppercase;color:var(--color-forest)}.concept-name[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-weight:var(--weight-bold);font-size:19px;line-height:1.35;margin:0;color:var(--color-ink)}.concept-definition[data-astro-cid-c7vljymv]{font-family:var(--font-serif);font-size:14px;line-height:1.65;color:var(--color-ink-mute);margin:0;flex-grow:1}.concept-cta[data-astro-cid-c7vljymv]{font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-wider);color:var(--color-forest);border-bottom:1.5px solid var(--color-forest);align-self:flex-start;padding-bottom:2px;margin-top:8px;transition:all var(--duration-fast) var(--ease-out)}.concept-card[data-astro-cid-c7vljymv]:hover .concept-cta[data-astro-cid-c7vljymv]{color:var(--color-ink);border-color:var(--color-ink)}.book-footer-cta[data-astro-cid-c7vljymv]{padding:64px 0 96px;border-top:1px solid var(--color-ink-faint)}.cta-row[data-astro-cid-c7vljymv]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}.cta-back[data-astro-cid-c7vljymv],.cta-review[data-astro-cid-c7vljymv],.cta-more[data-astro-cid-c7vljymv]{font-family:var(--font-mono);font-size:var(--text-mono-sm);letter-spacing:var(--tracking-wider);text-decoration:none;color:var(--color-forest);border-bottom:1.5px solid var(--color-forest);padding-bottom:2px;transition:all var(--duration-fast) var(--ease-out)}.cta-back[data-astro-cid-c7vljymv]:hover,.cta-review[data-astro-cid-c7vljymv]:hover,.cta-more[data-astro-cid-c7vljymv]:hover{color:var(--color-ink);border-color:var(--color-ink)}@media(max-width:820px){.book-hero-grid[data-astro-cid-c7vljymv]{grid-template-columns:1fr;gap:40px}.book-cover[data-astro-cid-c7vljymv]{max-width:220px;order:-1}}@media(max-width:600px){.book-hero[data-astro-cid-c7vljymv]{padding:32px 0 64px}.book-body-section[data-astro-cid-c7vljymv]{padding-bottom:64px}.linked-concepts-section[data-astro-cid-c7vljymv]{padding:64px 0}.book-footer-cta[data-astro-cid-c7vljymv]{padding:48px 0 64px}.book-body[data-astro-cid-c7vljymv] h2{font-size:26px;margin:56px 0 20px}.book-body[data-astro-cid-c7vljymv] h3{font-size:19px;margin:40px 0 14px}}