.reading-layout{grid-template-columns:var(--reading-main-width,min(var(--site-reading-width), calc(100% - 280px - var(--space-section)))) minmax(0, 1fr);gap:var(--space-section);align-items:start;display:grid}.reading-content{min-width:0;max-width:var(--site-reading-width);grid-area:1/1}.reading-toc{color:var(--theme-text,#294b3c);background:var(--theme-surface-soft,#eef1e4);border:1px solid var(--theme-border,#dce3d4);padding:var(--space-panel);border-radius:16px;min-width:0}.reading-toc-desktop{top:var(--space-group);max-height:calc(100dvh - 2 * var(--space-group));scrollbar-width:thin;grid-area:1/2;position:sticky;overflow-y:auto}.reading-toc-mobile{display:none}.reading-toc-heading,.reading-toc summary{align-items:center;gap:var(--space-label);font-size:1rem;line-height:1.5;display:flex}.reading-toc-heading{padding-bottom:var(--space-related)}.reading-toc ol{margin:0;padding:0;list-style:none}.reading-toc li+li{border-top:1px solid var(--theme-border,#dce3d4)}.reading-toc a{gap:var(--space-3);min-height:44px;padding-block:var(--space-3);overflow-wrap:anywhere;align-items:baseline;font-size:.9375rem;line-height:1.5;text-decoration:none;display:flex}.reading-toc a>span{color:var(--theme-muted,#657455);font-variant-numeric:tabular-nums;flex:0 0 1.5em;font-size:.8125rem}.reading-toc a:hover{text-underline-offset:4px;text-decoration:underline}.reading-toc :is(a,summary):focus-visible{outline:2px solid var(--theme-accent,#49643a);outline-offset:4px;border-radius:4px}@media (max-width:999px){.reading-layout{gap:var(--space-group);grid-template-columns:minmax(0,1fr)}.reading-content{grid-area:auto}.reading-toc-desktop{display:none}.reading-toc-mobile{max-width:var(--site-reading-width);padding:0 var(--space-related);display:block}.reading-toc summary{min-height:56px;padding-block:var(--space-related);cursor:pointer;font-weight:600;list-style:none}.reading-toc summary::-webkit-details-marker{display:none}.reading-toc summary>svg:last-child{flex:none;margin-left:auto}.reading-toc[open] summary>svg:last-child{transform:rotate(180deg)}.reading-toc-mobile nav{padding-bottom:var(--space-3)}}