[data-book-page]:not(:has([data-chapter-nav])){background:var(--reference-bg);color:var(--reference-ink);padding:16px}[data-book-page]:not(:has([data-chapter-nav]))>div{max-width:480px}.book-toc-title,:is([data-book-page]:not(:has([data-chapter-nav])) .book-legacy-title,[data-book-page]:not(:has([data-chapter-nav])) [data-book-legacy-status]){display:none}[data-book-page]:has([data-chapter-nav]) .book-toc-heading{display:none}[data-book-page]:has([data-book-toc-loading]) [data-book-to-top]{display:none}[data-book-page]:not(:has([data-chapter-nav])) .book-toc-title{font-size:26px;font-weight:700;line-height:1.4;display:block}[data-book-page]:not(:has([data-chapter-nav])) .book-back-link{min-height:44px;margin-bottom:8px;position:relative;top:calc(1.5rem - 25px);left:calc(1rem - 16px)}.book-toc{letter-spacing:0;line-height:1.45}[data-book-page]:not(:has([data-chapter-nav])) :is(.book-toc-hanja,.book-toc-number,.book-toc-original,.book-toc-group-name,.book-toc-group-info,.book-toc-jump,.book-toc-info,.book-toc-tag,.book-toc-row-text){font-family:Noto Sans KR,Noto Sans CJK KR,Noto Sans SC,Apple SD Gothic Neo,Malgun Gothic,sans-serif}.book-toc-hanja{font-family:var(--font-gyeok-serif);color:var(--reference-classic-ink);margin-top:6px;font-size:15px}.book-toc-info{color:var(--reference-section-ink);margin-top:8px;font-size:13px}.book-toc-tags{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.book-toc-tag{background:var(--reference-classic-bg);border:1px solid var(--reference-classic-btn-border);max-width:100%;min-height:26px;color:var(--reference-classic-ink);border-radius:13px;align-items:center;padding:4px 10px;font-size:12px;display:inline-flex}.book-toc-jumps{flex-wrap:wrap;gap:8px;margin:16px 0;display:flex}.book-toc-jump{background:var(--card);border:1px solid var(--reference-btn-border);height:36px;color:var(--reference-ink);box-shadow:none;border-radius:18px;padding:0 12px;font-size:13px}.book-toc-group{border:1px solid var(--reference-card-border);background:var(--card);border-radius:20px;margin-top:16px;scroll-margin-top:16px;overflow:hidden}.book-toc-group-head{white-space:normal;background:var(--reference-classic-bg);width:100%;height:auto;min-height:64px;color:var(--reference-classic-ink);box-shadow:none;text-align:left;border-radius:0;justify-content:space-between;gap:12px;padding:12px 16px}.book-toc-group-head:hover{background:var(--reference-classic-bg)}.book-toc-group-name{font-size:16px;font-weight:700;display:block}.book-toc-group-info{color:var(--reference-classic-sub);margin-top:4px;font-size:12px;font-weight:400;display:block}.book-toc-chevron{flex-shrink:0;width:18px;height:18px}.book-toc-row{border:0;border-top:1px solid var(--book-toc-divider);background:var(--card);width:100%;height:auto;min-height:52px;color:var(--reference-ink);box-shadow:none;white-space:normal;text-align:left;border-radius:0;justify-content:flex-start;gap:12px;padding:12px 16px;display:flex}.book-toc-row:hover{background:var(--book-toc-note-bg)}.book-toc-number{text-align:center;font-family:var(--font-gyeok-serif);color:var(--reference-classic-ink);flex:0 0 28px;font-size:15px;font-weight:700}.book-toc-row-text{overflow-wrap:anywhere;flex:1;min-width:0;font-size:16px;font-weight:500;line-height:1.45}.book-toc-original{font-size:13px;font-family:var(--font-gyeok-serif);color:var(--book-toc-original-ink);overflow-wrap:anywhere;margin-top:3px;display:block}.book-toc-row-arrow{width:16px;height:16px;color:var(--book-toc-arrow);flex-shrink:0}.book-toc-notes{border-top:1px solid var(--book-toc-divider)}.book-toc-note-head{cursor:pointer;background:var(--book-toc-note-bg);min-height:48px;color:var(--reference-section-ink);align-items:center;gap:10px;padding:10px 16px;font-size:14px;list-style:none;display:flex}.book-toc-note-head::-webkit-details-marker{display:none}.book-toc-note-head>span{flex:1}.book-toc-note-body{padding:0 16px 16px}.book-toc-skeleton{animation:1.8s ease-in-out infinite book-toc-pulse}.book-toc-skeleton-jumps{background:var(--book-toc-divider);border-radius:18px;width:100%;height:36px}.book-toc-skeleton-head{background:var(--reference-classic-bg);align-items:center;min-height:64px;padding:12px 16px;display:flex}.book-toc-skeleton-row{border-top:1px solid var(--book-toc-divider);align-items:center;min-height:52px;padding:12px 16px;display:flex}.book-toc-skeleton-bar{background:var(--book-toc-divider);border-radius:4px;width:76%;height:14px;display:block}.book-toc-skeleton-head .book-toc-skeleton-bar{width:42%}@keyframes book-toc-pulse{0%,to{opacity:1}50%{opacity:.6}}@media(prefers-reduced-motion:reduce){.book-toc-skeleton{animation:none}}