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2rem), var(--content-width))}.article-header{padding-block:4rem}.article-header h1{font-size:clamp(2.5rem,12vw,4.25rem)}.article-reading__layout{grid-template-columns:minmax(0,1fr);gap:2.5rem;padding-top:2rem}.article-toc{max-height:none;position:static}.article-toc summary{justify-content:space-between;align-items:center;min-height:3rem;list-style:none;display:flex}.article-toc summary::-webkit-details-marker{display:none}.article-toc summary:after{content:"＋";font-size:1.25rem}.article-toc details[open] summary:after{content:"−"}.article-reading__main{grid-column:1}.article-content{line-height:1.9}.article-content h2{margin-top:3.75rem}.article-neighbors,.article-related__list{grid-template-columns:1fr}.article-related__list li,.article-related__list li+li,.article-related__list li:not(:last-child){border-left:0;padding-inline:0}.article-related__list a{min-height:13rem}.article-neighbors a,.article-neighbors a:first-child:not(:last-child),.article-neighbors a+a{min-height:9rem;padding-inline:0}.article-neighbors a+a{border-top:1px solid var(--line);border-left:0}}