.post-layout{--toc-w:240px;margin-block:clamp(24px,4vw,48px);margin-inline:auto}.post-layout--toc{grid-template-columns:var(--toc-w) minmax(0, 68ch);justify-content:center;gap:clamp(40px,5vw,72px);max-width:980px;display:grid}.post-layout--solo{max-width:68ch}.post-layout__main{min-width:0}.post-layout__main .post-body{margin-block:0}.post-toc{align-self:start;max-height:calc(100vh - 132px);padding-right:4px;position:sticky;top:100px;overflow-y:auto}.post-toc__label{color:var(--color-ink-3);margin:0 0 14px}.post-toc__list{border-left:1px solid var(--color-line);margin:0;padding:0;list-style:none}.post-toc__item{margin:0}.post-toc__item--sub .post-toc__link{padding-left:28px;font-size:13px}.post-toc__link{color:var(--color-ink-3);border-left:2px solid #0000;margin-left:-1px;padding:7px 0 7px 16px;font-size:13.5px;line-height:1.35;text-decoration:none;transition:color .18s,border-color .18s;display:block}.post-toc__link:hover{color:var(--color-ink)}.post-toc__link.is-active{color:var(--color-green);border-left-color:var(--color-green);font-weight:600}.post-toc--mobile{display:none}@media (width<=1024px){.post-layout--toc{grid-template-columns:minmax(0,1fr);gap:0;max-width:68ch}.post-toc{display:none}.post-toc--mobile{border:1px solid var(--color-line);border-radius:var(--radius-tile);background-color:var(--color-elevated);margin-bottom:clamp(24px,4vw,36px);display:block}.post-toc__summary{cursor:pointer;color:var(--color-ink-2);justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;list-style:none;display:flex}.post-toc__summary::-webkit-details-marker{display:none}.post-toc__chevron{width:18px;height:18px;color:var(--color-green);transition:transform .25s}.post-toc--mobile[open] .post-toc__chevron{transform:rotate(180deg)}.post-toc--mobile .post-toc__nav{padding:0 18px 16px}.post-toc--mobile .post-toc__list{border-left:1px solid var(--color-line)}}@media (prefers-reduced-motion:reduce){.post-toc__link,.post-toc__chevron{transition:none}}