.math-display{overflow-x:auto;overflow-y:hidden;max-width:100%;margin:24px 0;padding:14px 12px;background:#f6f8fb;border:1px solid #e3e9ef;border-radius:6px}
.math-display .katex-display{margin:.3em 0}.katex{font-size:1.06em}.article-body .katex{line-height:1.4}.math-display:focus-visible{outline:2px solid var(--accent)}
.article-body p .katex{overflow-wrap:normal}.katex-error{color:#a32828!important}.article-body h3{margin-top:30px}.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.sidebar-search{margin:4px 0 20px}.sidebar-search label{font-size:11px;letter-spacing:1px;color:var(--muted);display:block;margin-bottom:7px}.sidebar-search>div,.main-search>div{display:flex;gap:5px}.sidebar-search input,.main-search input{min-width:0;width:100%;padding:9px 10px;border:1px solid #ced9e3;border-radius:4px;background:#fff;color:var(--ink);font:inherit;font-size:13px}.sidebar-search button,.main-search button{padding:7px 11px;border:0;border-radius:4px;color:#fff;background:var(--ink);cursor:pointer}.main-search{margin:20px 0 30px}.main-search label{display:block;margin-bottom:10px;color:var(--muted);font-size:14px}.main-search input{font-size:16px;padding:12px}
.mark-read{display:inline-flex;gap:7px;align-items:center;font-size:13px;color:var(--muted);margin:0 0 12px;cursor:pointer}.mark-read input{accent-color:var(--accent)}.reading-status{font-size:14px;color:var(--muted)}.search-results article{padding:22px 0;border-bottom:1px solid var(--line)}.search-results h2{font-size:21px;margin:7px 0}.search-results article>a>span{font-size:12px;color:var(--muted)}.search-results p{font-size:14px;line-height:1.85;color:var(--muted)}.toc{max-height:calc(100vh - 100px);overflow-y:auto}.toc-links a{font-size:12px}
@media(max-width:760px){.math-display{margin:20px 0;padding:10px 8px;font-size:14px}.title-en{font-size:20px}.chapter-meta{margin-bottom:12px}}
@media print{.mark-read,.sidebar-search,.main-search{display:none!important}.math-display{overflow:visible;border:0;background:none;padding:0;break-inside:avoid}.katex-display{white-space:normal}.katex-display>.katex{white-space:normal}}