.reading-with-toc{display:grid;grid-template-columns:minmax(0,294px) minmax(0,1fr);gap:clamp(1rem,2.5vw,2.1rem);align-items:start;min-width:0}.reading-with-toc.toc-collapsed{grid-template-columns:48px minmax(0,1fr)}.reading-toc{position:sticky;top:82px;min-width:0;align-self:start;z-index:21}.reading-toc-panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;display:flex;flex-direction:column;max-height:calc(100vh - 100px);min-height:0;box-shadow:var(--shadow-sm)}.reading-toc-heading{display:flex;justify-content:space-between;align-items:center;padding:.98rem .92rem .85rem;gap:.4rem;border-bottom:1px solid var(--border)}.reading-toc-heading strong{display:block;font-size:1.05rem;line-height:1.45;letter-spacing:-.01em}.reading-toc-count{color:var(--fg-muted);font-size:.82rem;font-weight:540;letter-spacing:0}.reading-toc-heading small{display:block;color:var(--fg-muted);font-size:.82rem;line-height:1.6;margin-top:.22rem;font-variant-numeric:tabular-nums}.reading-toc-close{border:0;background:var(--surface-2);color:var(--fg);border-radius:8px;min-width:36px;min-height:36px;font-size:1.4rem;cursor:pointer}.reading-toc-links{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:.65rem .55rem 1rem;scrollbar-width:thin;flex:1}.reading-toc-link{display:flex;gap:.4rem;align-items:baseline;border-left:3px solid transparent;border-radius:5px;padding:.65rem .62rem;color:var(--fg);font-size:1rem;line-height:1.55;min-height:42px;overflow-wrap:anywhere;text-decoration:none}.reading-toc-link:hover{color:var(--fg);background:var(--surface-2)}.reading-toc-link.is-current{color:var(--accent-ink);background:var(--accent-soft);font-weight:760;border-left-color:var(--accent)}.reading-toc-level3{padding-left:1.27rem;font-size:.93rem;color:var(--fg-muted);border-left-width:2px}.reading-toc-index{font-variant-numeric:tabular-nums;color:var(--fg-muted);font-size:.84em;flex-shrink:0}.reading-toc-top{flex-shrink:0;text-align:left;border:0;border-top:1px solid var(--border);background:transparent;color:var(--fg-muted);padding:.75rem .9rem;font-size:.84rem;font-weight:650;cursor:pointer}.reading-toc-top:hover{color:var(--accent-ink)}.reading-toc-toggle{display:none;align-items:center;justify-content:center;gap:.3rem;border:1px solid var(--border);background:var(--surface);color:var(--fg);border-radius:10px;padding:.48rem .45rem;min-width:44px;min-height:44px;font:inherit;font-size:.8rem;font-weight:740;cursor:pointer;box-shadow:var(--shadow-sm)}.reading-toc.is-collapsed .reading-toc-toggle{display:flex}.reading-toc.is-collapsed .reading-toc-panel{display:none}.reading-toc-toggle-icon{font-size:1.1rem}@media(max-width:1000px){.reading-with-toc,.reading-with-toc.toc-collapsed{display:block}.reading-toc{position:fixed;top:92px;left:0;z-index:49;width:min(340px,85vw);pointer-events:none}.reading-toc-toggle{display:flex;position:relative;border-radius:0 9px 9px 0;min-width:60px;pointer-events:auto}.reading-toc-panel{height:calc(100dvh - 112px);max-height:calc(100dvh - 112px);border-radius:0 12px 12px 0;box-shadow:var(--shadow);pointer-events:auto}.reading-toc.is-collapsed .reading-toc-panel{display:none}.reading-toc:not(.is-collapsed) .reading-toc-toggle{display:none}}@media(min-width:1001px){.rkd-layout.reading-with-toc{display:grid;grid-template-columns:minmax(0,294px) minmax(0,1fr)}.rkd-layout.reading-with-toc.toc-collapsed{grid-template-columns:48px minmax(0,1fr)}.post-body-wrap.reading-with-toc{display:grid;grid-template-columns:minmax(0,294px) minmax(0,1fr)}.post-body-wrap.reading-with-toc.toc-collapsed{grid-template-columns:48px minmax(0,1fr)}}@media print{.reading-toc{display:none!important}.reading-with-toc,.reading-with-toc.toc-collapsed{display:block!important}}.reading-toc-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.reading-toc-link.is-current.reading-toc-level3{color:var(--accent-ink)}@media(max-width:1000px){.reading-toc{top:76px}.reading-toc-panel{height:calc(100dvh - 94px);max-height:calc(100dvh - 94px)}.reading-toc-links{padding-bottom:1.3rem}}@media(min-width:1001px){#main-content .reading-with-toc:has(>.reading-toc){--toc-edge-gap: clamp(20px, 2vw, 32px);--toc-rail-width: clamp(254px, 21vw, 294px);display:grid;grid-template-columns:var(--toc-rail-width) minmax(0,1fr);gap:clamp(24px,3vw,44px);width:calc(100vw - var(--toc-edge-gap) - var(--toc-edge-gap));max-width:none;margin-left:calc(50% - 50vw + var(--toc-edge-gap))}#main-content .reading-with-toc.toc-collapsed:has(>.reading-toc){grid-template-columns:var(--toc-rail-width) minmax(0,1fr)}#main-content .reading-with-toc:has(>.reading-toc)>:is(.rkd-article,.post-body){width:100%;max-width:800px}#main-content .rkd-page.focus-mode .rkd-layout.reading-with-toc{display:block;width:auto;max-width:800px;margin:0 auto}#main-content .post-body-wrap.reading-with-toc:not(:has(>.reading-toc)){display:block}}