.qa{border-top:1px solid var(--line);padding:12px 0}.qa:first-of-type{border-top:0}.qa summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}.qa summary:after{content:"+";color:var(--nav);font-size:20px;line-height:20px}.qa[open] summary:after{content:"–"}.qa p{margin:8px 0 0;color:var(--ink)}.toc a{display:block;padding:8px 0;border-top:1px solid var(--line);text-decoration:none;font-weight:600;color:var(--nav)}.toc a:first-of-type{border-top:0}