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svg{flex:none;width:15px;height:15px}.book-action-primary{background:var(--color-text);border-color:var(--color-text);color:var(--color-bg);flex:0 260px;min-width:220px}.book-action-primary>span{text-align:left;flex:1;gap:2px;min-width:0;display:grid}.book-action-primary small{opacity:.72;text-overflow:ellipsis;white-space:nowrap;max-width:160px;font-size:11px;font-weight:500;overflow:hidden}.book-action-primary:hover{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.book-action-secondary:hover{background:var(--color-surface);border-color:var(--color-text)}.book-contents{max-width:960px;padding:clamp(48px, 6vw, 68px) var(--page-gutter) 104px;scroll-margin-top:var(--header-height);margin:0 auto;position:relative}.book-contents:before{border-top:1px solid var(--color-line-strong);content:"";left:var(--page-gutter);right:var(--page-gutter);position:absolute;top:0}.book-contents-heading{margin-bottom:28px}.book-contents-heading 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1fr;gap:20px;padding-top:28px;display:grid}.chapter-pagination>a{border-radius:var(--radius-card);align-items:center;gap:13px;min-width:0;min-height:74px;padding:10px 12px;transition:background-color .18s;display:flex}.chapter-pagination>a:hover{background:var(--color-surface-subtle)}.chapter-pagination>a>svg{color:var(--color-accent);height:17px;transition:transform .18s var(--ease-out);flex:none;width:17px}.chapter-pagination>a:hover:first-of-type>svg{transform:translate(-3px)}.chapter-pagination>a:hover:last-of-type>svg{transform:translate(3px)}.chapter-pagination>a span{color:var(--color-muted);font-size:var(--text-xs);min-width:0;display:block}.chapter-pagination>a strong{color:var(--color-text);margin-top:5px;font-size:14px;font-weight:600;line-height:1.45;display:block}.chapter-next{text-align:right;grid-column:2;justify-content:flex-end}@media (max-width:900px){.reading-layout{grid-template-columns:1fr;gap:22px;max-width:760px;padding-top:34px}.reading-toc{border-bottom:1px 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