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.book-site-nav{box-sizing:border-box;display:flex;flex-wrap:wrap;gap:.7rem 1.3rem;max-width:980px;margin:0 auto 1rem;padding:.7rem 1rem;font-size:15px;line-height:1.6}.book-site-nav a{min-height:36px;display:inline-flex;align-items:center}.book-section-index{border:1px solid #d7e1e9;border-radius:10px;padding:.7rem 1rem;margin:1.5rem 0;font-size:15px}.book-section-index summary{cursor:pointer;min-height:36px}.book-section-index ol{line-height:1.7}.book-section-index a{display:block;padding:.3rem 0}.book-chapter-tools{display:flex;flex-wrap:wrap;gap:1rem;font-size:15px;margin:1.5rem 0}.book-chapter-tools a{min-height:36px;display:inline-flex;align-items:center}h2[id]{scroll-margin-top:20px}main{min-width:0}p,li{overflow-wrap:anywhere}.page-nav{flex-wrap:wrap}a:focus-visible,summary:focus-visible{outline:3px solid #2367a0;outline-offset:3px}