.article-shell{max-width:1240px;padding-left:4%;padding-right:4%}
.reading-layout{display:grid;grid-template-columns:265px minmax(0,790px);gap:48px;align-items:start}
.reading-layout .article-body{min-width:0;width:100%}
.article-toc{position:sticky;top:calc(var(--header-height,105px) + 24px);max-height:calc(100dvh - var(--header-height,105px) - 48px);overflow:auto;padding:6px 0 12px}
.toc-label{font-size:12px;letter-spacing:1.5px;font-weight:700;margin:0 0 20px;color:var(--muted)}
.article-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.article-toc li{margin:0;padding:0}
.article-toc a{display:block;padding:10px 15px;font-size:14px;line-height:1.5;color:var(--muted);border-left:3px solid transparent;margin-left:-2px;text-decoration:none}
.article-toc a:hover{color:var(--ink);background:#edf1e9}
.article-toc a[aria-current="location"]{color:var(--ink);border-color:#526f4f;background:#edf1e9;font-weight:700}
.toc-toggle{display:none}
.article-shell h2[id]{scroll-margin-top:calc(var(--header-height,105px) + 24px)}
html{scroll-padding-top:0}
@media(max-width:1000px){
.reading-layout{display:block}.article-shell{padding-left:6%;padding-right:6%}
body{padding-bottom:calc(68px + env(safe-area-inset-bottom))}
.article-toc{position:fixed;inset:auto 0 0;z-index:50;max-height:none;padding:0 0 env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 24px #122c3612;display:flex;flex-direction:column}
.toc-label{display:none}.toc-toggle{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 6%;border:0;background:#fff;color:var(--ink);font:600 15px Arial;cursor:pointer;order:2;text-align:left;min-height:58px}
.toc-count{font-size:13px;font-weight:400;color:var(--muted);margin-left:8px}
.article-toc ol{display:none;border:0;padding:12px 4%;overflow:auto;max-height:min(55dvh,450px,calc(100dvh - var(--header-height,105px) - 90px));overscroll-behavior:contain}
.article-toc[data-open] ol{display:block}.article-toc[data-open] .toc-toggle{border-top:1px solid var(--line)}.article-toc[data-open] svg{transform:rotate(180deg)}
.article-toc a{font-size:14px;padding:12px 14px;margin:0}.toc-toggle:focus-visible{outline:3px solid #526f4f;outline-offset:-5px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.article-toc{display:none}.reading-layout{display:block}body{padding:0}}

.study{max-width:1240px}.study .reading-layout{grid-template-columns:265px minmax(0,1fr);gap:40px}.study .study-body{min-width:0}.study .article-toc a{color:var(--muted);text-decoration:none}.study h2[id]{scroll-margin-top:calc(var(--header-height,105px) + 24px)}
@media(max-width:1000px){.study .reading-layout{display:block}}