.bkbg-toc-wrapper{background:var(--bkbg-toc-bg,#f9fafb);border:1px solid var(--bkbg-toc-border,#e5e7eb);border-radius:var(--bkbg-toc-radius,8px);padding:var(--bkbg-toc-pad,20px);box-sizing:border-box;font-family:var(--bktoc-lt-font-family,inherit);font-size:var(--bktoc-lt-font-size-d,13px);line-height:var(--bktoc-lt-line-height-d,1.5);letter-spacing:var(--bktoc-lt-letter-spacing-d);word-spacing:var(--bktoc-lt-word-spacing-d);font-weight:var(--bktoc-lt-font-weight,400);font-style:var(--bktoc-lt-font-style);text-decoration:var(--bktoc-lt-text-decoration,none);text-transform:var(--bktoc-lt-text-transform)}.bkbg-toc-sticky{position:sticky;top:16px}.bkbg-toc-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.bkbg-toc-wrapper .bkbg-toc-title{font-family:var(--bktoc-tt-font-family,inherit);font-size:var(--bktoc-tt-font-size-d,14px);line-height:var(--bktoc-tt-line-height-d,1.2);letter-spacing:var(--bktoc-tt-letter-spacing-d,.05em);word-spacing:var(--bktoc-tt-word-spacing-d);font-weight:var(--bktoc-tt-font-weight,700);font-style:var(--bktoc-tt-font-style);text-decoration:var(--bktoc-tt-text-decoration);text-transform:var(--bktoc-tt-text-transform,uppercase);color:var(--bkbg-toc-title-color,#111827)}.bkbg-toc-toggle{background:none;border:none;cursor:pointer;color:var(--bkbg-toc-title-color,#111827);font-size:16px;padding:0;line-height:1;flex-shrink:0;transition:transform 0.2s}.bkbg-toc-body{overflow:hidden;transition:max-height 0.3s ease,opacity 0.3s ease;max-height:2000px;opacity:1}.bkbg-toc-body.bkbg-toc-hidden{max-height:0!important;opacity:0}.bkbg-toc-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:4px}.bkbg-toc-ls-disc{list-style:disc;padding-left:18px}.bkbg-toc-ls-decimal{list-style:decimal;padding-left:20px}.bkbg-toc-item{line-height:1.5}.bkbg-toc-item.bkbg-toc-h3.bkbg-toc-nested{padding-left:16px}.bkbg-toc-item.bkbg-toc-h4.bkbg-toc-nested{padding-left:32px}.bkbg-toc-item.bkbg-toc-h5.bkbg-toc-nested{padding-left:48px}.bkbg-toc-item.bkbg-toc-h6.bkbg-toc-nested{padding-left:64px}.bkbg-toc-item a{color:var(--bkbg-toc-link-color,#2563eb);text-decoration:var(--bktoc-lt-text-decoration,none);display:block;padding:2px 0;border-left:2px solid #fff0;padding-left:8px;transition:color 0.15s,border-color 0.15s;word-break:break-word}.bkbg-toc-item a:hover{color:var(--bkbg-toc-link-hover,#1d4ed8);border-left-color:var(--bkbg-toc-link-hover,#1d4ed8)}.bkbg-toc-item a.bkbg-toc-active{color:var(--bkbg-toc-link-active,#2563eb);border-left-color:var(--bkbg-toc-link-active,#2563eb);font-weight:600}.bkbg-toc-item.bkbg-toc-h3 a,.bkbg-toc-item.bkbg-toc-h4 a{opacity:.85}.bkbg-toc-item.bkbg-toc-h5 a,.bkbg-toc-item.bkbg-toc-h6 a{opacity:.7}@media (max-width:1024px){.bkbg-toc-wrapper{font-size:var(--bktoc-lt-font-size-t,var(--bktoc-lt-font-size-d,13px));line-height:var(--bktoc-lt-line-height-t,var(--bktoc-lt-line-height-d,1.5));letter-spacing:var(--bktoc-lt-letter-spacing-t,var(--bktoc-lt-letter-spacing-d));word-spacing:var(--bktoc-lt-word-spacing-t,var(--bktoc-lt-word-spacing-d))}.bkbg-toc-wrapper .bkbg-toc-title{font-size:var(--bktoc-tt-font-size-t,var(--bktoc-tt-font-size-d,14px));line-height:var(--bktoc-tt-line-height-t,var(--bktoc-tt-line-height-d,1.2));letter-spacing:var(--bktoc-tt-letter-spacing-t,var(--bktoc-tt-letter-spacing-d,.05em));word-spacing:var(--bktoc-tt-word-spacing-t,var(--bktoc-tt-word-spacing-d))}}@media (max-width:767px){.bkbg-toc-wrapper{font-size:var(--bktoc-lt-font-size-m,var(--bktoc-lt-font-size-t,var(--bktoc-lt-font-size-d,13px)));line-height:var(--bktoc-lt-line-height-m,var(--bktoc-lt-line-height-t,var(--bktoc-lt-line-height-d,1.5)));letter-spacing:var(--bktoc-lt-letter-spacing-m,var(--bktoc-lt-letter-spacing-t,var(--bktoc-lt-letter-spacing-d)));word-spacing:var(--bktoc-lt-word-spacing-m,var(--bktoc-lt-word-spacing-t,var(--bktoc-lt-word-spacing-d)))}.bkbg-toc-wrapper .bkbg-toc-title{font-size:var(--bktoc-tt-font-size-m,var(--bktoc-tt-font-size-t,var(--bktoc-tt-font-size-d,14px)));line-height:var(--bktoc-tt-line-height-m,var(--bktoc-tt-line-height-t,var(--bktoc-tt-line-height-d,1.2)));letter-spacing:var(--bktoc-tt-letter-spacing-m,var(--bktoc-tt-letter-spacing-t,var(--bktoc-tt-letter-spacing-d,.05em)));word-spacing:var(--bktoc-tt-word-spacing-m,var(--bktoc-tt-word-spacing-t,var(--bktoc-tt-word-spacing-d)))}}