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340px){.tag-check-grid{grid-template-columns:1fr}}.detail-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:24px;align-items:start}.detail-main{min-width:0}.detail-breadcrumb-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.detail-back{font-size:13px;color:var(--text-light)}.detail-back:hover{color:var(--primary-dark)}.toc-open-btn{display:none;align-items:center;min-height:40px;padding:6px 12px;border:1px solid var(--border);border-radius:9px;background:var(--card);color:var(--text);font-size:13px;font-family:inherit;cursor:pointer}.toc-open-btn:hover{border-color:var(--primary);color:var(--primary-dark)}.toc{position:sticky;top:76px;display:flex;flex-direction:column;max-height:calc(100vh - 96px);background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.toc-head{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--border);background:#fff}.toc-cat{min-width:0;font-size:14px;font-weight:700;color:var(--primary-dark);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-count{margin-left:auto;font-size:12px;color:var(--text-light);white-space:nowrap}.toc-list{position:relative;flex:1;min-height:0;overflow-y:auto;padding:6px;display:flex;flex-direction:column;gap:2px;scrollbar-width:thin}.toc-item{flex:none;display:block;padding:8px 10px;border-left:3px solid transparent;border-radius:8px;color:var(--text);font-size:13px;line-height:1.45;text-decoration:none}.toc-item-text{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;max-height:2.9em;line-height:1.45;word-break:break-word;overflow-wrap:anywhere}.toc-item:hover{background:var(--primary-light);color:var(--primary-dark);text-decoration:none}.toc-item.active{background:var(--primary-light);border-left-color:var(--primary);color:var(--primary-dark);font-weight:600}.toc-drawer-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;display:flex;background:#11182773}.toc-drawer{width:min(86vw,340px);height:100%;display:flex;flex-direction:column;background:var(--card);box-shadow:8px 0 30px #0003}.toc-drawer 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