.site-header{background:linear-gradient(135deg,#667eea,#764ba2);padding:0;box-shadow:0 2px 8px rgba(0,0,0,.1);position:-webkit-sticky;position:sticky;top:0;z-index:1000}.site-header-inner{max-width:1200px;margin:0 auto;padding:0 24px;min-height:64px;justify-content:space-between;gap:16px}.site-header-inner,.site-logo{display:flex;align-items:center}.site-logo{gap:8px;color:#fff;font-size:18px;font-weight:600;text-decoration:none;white-space:nowrap;flex-shrink:0}.site-nav{display:flex;align-items:center;flex-wrap:nowrap;gap:4px 6px;justify-content:flex-end;flex:1 1;min-width:0;overflow-x:auto}.site-nav-link{color:rgba(255,255,255,.92);text-decoration:none;padding:6px 10px;white-space:nowrap;border-radius:4px;font-size:14px}.site-nav-link:hover{color:#fff;background:rgba(255,255,255,.12)}.site-nav-link-active{color:#fff;font-weight:600;border-bottom:2px solid rgba(255,255,255,.95);border-radius:0}.site-nav-actions{display:flex;gap:8px;flex-shrink:0}.site-btn{display:inline-block;padding:4px 12px;border-radius:6px;font-size:13px;text-decoration:none;white-space:nowrap}.site-btn-ghost{color:#fff;border:1px solid rgba(255,255,255,.5)}.site-btn-primary{background:#1677ff;color:#fff;border:none;cursor:pointer}.site-btn-primary:disabled{opacity:.6;cursor:not-allowed}.site-footer{background:#2563a0;color:#ffffff;text-align:center;padding:24px 16px;margin-top:48px}.site-footer-nav-links{list-style:none;padding:0;margin:0 0 16px;display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px}.site-footer-nav-link{color:#ffffff;text-decoration:none;font-size:14px}.site-footer-nav-link:hover{color:#ffffff;text-decoration:underline}.site-footer p{margin:8px 0;color:#ffffff}.page-shell{min-height:100vh;background:#f0f2f5;display:flex;flex-direction:column}.page-main{flex:1 1;max-width:1200px;width:100%;margin:0 auto;padding:24px 16px 48px}.page-title{margin:0 0 8px;font-size:28px;color:#1f1f1f}.page-subtitle{margin:0 0 24px;color:#666}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:20px;gap:20px}.card{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 8px rgba(0,0,0,.08);transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.12)}.card h3{margin:0 0 8px;font-size:18px}.card p{margin:0;color:#666;line-height:1.6}.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;margin-right:6px}.tag-green{background:#f6ffed;color:#237804;border:1px solid #b7eb8f}.tag-blue{background:#e6f4ff;color:#0958d9;border:1px solid #91caff}.list-panel{background:#fff;border-radius:8px;padding:16px 20px;box-shadow:0 2px 8px rgba(0,0,0,.08);margin-bottom:20px}.list-panel h2{margin:0 0 12px;font-size:18px}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.panel-head h2{margin:0}.panel-more{color:#0958d9;text-decoration:none;font-size:14px;white-space:nowrap}.panel-more:hover{text-decoration:underline}.list-item{display:block;padding:12px 0;border-bottom:1px solid #f0f0f0;text-decoration:none;color:inherit}.list-item:last-child{border-bottom:none}.list-item:hover h3{color:#1677ff}.list-item h3{margin:0 0 4px;font-size:15px;font-weight:500}.list-item-with-thumb{display:flex;gap:12px;align-items:flex-start}.list-item-thumb{width:72px;height:54px;object-fit:cover;border-radius:6px;flex-shrink:0;background:#f5f5f5}.list-item-body{flex:1 1;min-width:0}.list-item-body .tag{margin-bottom:6px}.list-pagination{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid #f0f0f0}.list-pagination-summary{color:#666;font-size:14px}.list-pagination-actions{display:flex;gap:8px}.list-pagination-btn{display:inline-flex;align-items:center;justify-content:center;min-width:88px;height:36px;padding:0 14px;border-radius:6px;border:1px solid #d9d9d9;background:#fff;color:#1677ff;font-size:14px;text-decoration:none}.list-pagination-btn:hover{border-color:#1677ff;color:#0958d9}.list-pagination-btn-disabled{color:#bfbfbf;border-color:#f0f0f0;background:#fafafa;cursor:not-allowed}.demo-spotlight-panel{margin-bottom:24px}.demo-spotlight-head{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:16px}.demo-spotlight-more{color:#0958d9;text-decoration:none;font-weight:600;white-space:nowrap}.demo-card .tag{margin-bottom:8px}.home-contents-panel{margin-bottom:24px}.home-contents-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:20px;gap:20px}.home-content-card{display:flex;flex-direction:column;height:100%;text-decoration:none;color:inherit;background:#fff;border:1px solid #f0f0f0;border-radius:12px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.home-content-card:hover{transform:translateY(-4px);border-color:#d6e4ff;box-shadow:0 12px 28px rgba(22,119,255,.12)}.home-content-card:hover h3{color:#1677ff}.home-content-card-cover-wrap{position:relative;width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,#eef2ff,#f5f5f5);overflow:hidden}.home-content-card-cover{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}.home-content-card:hover .home-content-card-cover{transform:scale(1.04)}.home-content-card-body{flex:1 1;display:flex;flex-direction:column;gap:8px;padding:16px 18px 18px}.home-content-card-body h3{font-size:17px;font-weight:600;line-height:1.45}.home-content-card-body h3,.home-content-card-body p{margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.home-content-card-body p{color:#666;font-size:14px;line-height:1.65}.home-content-card-body .tag{align-self:flex-start}@media (max-width:768px){.demo-spotlight-head{flex-direction:column}.card-grid,.home-contents-grid{grid-template-columns:1fr}}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.stat-box{background:#fff;border-radius:8px;padding:16px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.08)}.stat-box strong{display:block;font-size:24px;color:#1677ff}.hero{border-radius:8px;padding:48px 32px;color:#fff;margin-bottom:24px;background:linear-gradient(135deg,#1890ff,#096dd9)}.hero h1{margin:0 0 12px;font-size:32px}.hero p{margin:0;opacity:.95;font-size:16px}.two-col{display:grid;grid-template-columns:1fr 320px;grid-gap:24px;gap:24px}@media (max-width:992px){.two-col{grid-template-columns:1fr}}.legacy-note{background:#fffbe6;border:1px solid #ffe58f;border-radius:8px;padding:12px 16px;margin-bottom:20px;font-size:14px;color:#614700}.content-detail-page{max-width:860px}.content-back-link{color:#1677ff;text-decoration:none;font-size:14px}.content-detail-article{margin-top:16px}.content-detail-cover{display:block;max-width:100%;height:auto;margin:16px 0}.content-detail-lead{color:rgba(0,0,0,.65);margin:16px 0 24px}.content-empty{color:#999}.content-body-panel{background:#fff;padding:28px 32px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.06)}.content-body-html{color:rgba(0,0,0,.88);font-size:16px;line-height:1.85;word-break:break-word;overflow-wrap:anywhere}.content-body-html>:first-child{margin-top:0}.content-body-html p{margin:0 0 1.35em}.content-body-html h1,.content-body-html h2,.content-body-html h3{margin:1.75em 0 .85em;font-weight:600;line-height:1.45}.content-body-html h2{font-size:1.5em}.content-body-html h3{font-size:1.25em}.content-body-html ol,.content-body-html ul{margin:0 0 1.35em;padding-left:1.75em}.content-body-html blockquote{margin:1.35em 0;padding:.75em 1em;border-left:4px solid #d9d9d9;color:rgba(0,0,0,.65);background:#fafafa}.content-body-html img{border-radius:6px}.content-body-html img,.content-body-html svg{max-width:100%;height:auto;display:block;margin:16px auto}.content-body-html pre.hljs,.content-body-html pre.ql-syntax,.content-body-html pre[data-language]{background:#f6f8fa;border:1px solid #e1e4e8;border-radius:8px;padding:12px 16px;overflow-x:auto;margin:1.1em 0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:13px;line-height:1.6;color:#24292f;white-space:pre;-moz-tab-size:4;tab-size:4}.content-body-html pre.hljs code{background:transparent;padding:0}.content-body-html pre.hljs code,.content-body-html pre.hljs span[class^=hljs-]{font-family:inherit;font-size:inherit}.content-body-html .math-block,.content-body-html .ql-chem-block,.content-body-html .ql-math-block{display:block;margin:1.2em auto;padding:16px 20px;border:1px solid #e1e4e8;border-radius:10px;background:#fafbfc;overflow-x:auto;text-align:center}.content-body-html .math-block .katex-display,.content-body-html .ql-math-block .katex-display{margin:0}.content-body-html .ql-chem-caption{margin-top:10px}.content-body-html .ql-figure-caption{margin:4px 0 16px;font-size:13px;color:#888;text-align:center}.content-body-html .ql-science-error{color:#cf1322;font-size:13px}.content-body-html .ql-science-source{margin-top:8px;padding:10px 12px;background:#f6f8fa;border-radius:6px;font-size:12px;text-align:left;white-space:pre-wrap}.content-body-html .rich-text-table-wrap{overflow-x:auto;margin:1.2em 0;-webkit-overflow-scrolling:touch}.content-body-html .rich-text-table-wrap>table,.content-body-html table,.content-body-html table.rich-text-table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.6;table-layout:auto;border:2px solid rgba(0,0,0,.88);border-right:none;border-left:none}.content-body-html .rich-text-table-wrap>table td,.content-body-html .rich-text-table-wrap>table th,.content-body-html table td,.content-body-html table th,.content-body-html table.rich-text-table td,.content-body-html table.rich-text-table th{border:1px solid #d9d9d9;border-top:none;border-left:none;padding:10px 16px;text-align:left;vertical-align:top}.content-body-html .rich-text-table-wrap>table td:last-child,.content-body-html .rich-text-table-wrap>table th:last-child,.content-body-html table td:last-child,.content-body-html table th:last-child,.content-body-html table.rich-text-table td:last-child,.content-body-html table.rich-text-table th:last-child{border-right:none}.content-body-html .rich-text-table-wrap>table tr:last-child td,.content-body-html .rich-text-table-wrap>table tr:last-child th,.content-body-html table tr:last-child td,.content-body-html table tr:last-child th,.content-body-html table.rich-text-table tr:last-child td,.content-body-html table.rich-text-table tr:last-child th{border-bottom:none}.content-body-html .rich-text-table-wrap>table th,.content-body-html table th,.content-body-html table.rich-text-table th{background:#fafafa;font-weight:600;color:rgba(0,0,0,.88);white-space:nowrap}.content-body-html .rich-text-table-wrap>table tbody tr:hover td,.content-body-html table tbody tr:hover td,.content-body-html table.rich-text-table tbody tr:hover td{background:#f5faff}.content-body-html .ql-md-table-block{display:block;margin:1.2em 0;border:1px solid #d9d9d9;border-radius:8px;background:#fff;overflow:hidden}.content-body-html .ql-md-table-toolbar{display:none}.content-body-html .ql-md-table-block .rich-text-table-wrap{margin:0}.content-body-html .ql-chem-block,.content-body-html .ql-math-block{display:block;margin:1.2em auto;padding:16px 20px;border:1px solid #e1e4e8;border-radius:10px;background:#fafbfc;overflow-x:auto;text-align:center;max-width:100%}.content-body-html .ql-chem-structure{display:flex;justify-content:center;align-items:center;min-height:120px}.content-body-html .ql-chem-structure svg{max-width:100%;height:auto}.content-body-html .ql-chem-caption{margin:10px 0 0;font-size:13px;color:rgba(0,0,0,.55);text-align:center}.content-body-html .ql-chem-fallback-msg,.content-body-html .ql-science-error{color:#cf1322;font-size:13px;margin:0 0 8px}.content-recommendations{margin-top:40px;display:grid;grid-gap:24px;gap:24px}.content-recommend-block{background:#fff;border-radius:8px;padding:20px 22px;box-shadow:0 2px 8px rgba(0,0,0,.08)}.content-recommend-title{margin:0 0 14px;font-size:17px;font-weight:600;color:#1f1f1f}.content-recommend-list{list-style:none;margin:0;padding:0}.content-recommend-item{display:block;padding:12px 0;border-bottom:1px solid #f0f0f0;text-decoration:none;color:inherit}.content-recommend-item:last-child{border-bottom:none;padding-bottom:0}.content-recommend-item:hover h3{color:#1677ff}.content-recommend-item h3{margin:0 0 6px;font-size:15px;font-weight:500;line-height:1.5}.content-recommend-item p{margin:0 0 6px;color:#666;font-size:13px;line-height:1.6}.content-recommend-reason{display:inline-block;font-size:12px;color:#595959}.spotlight-reason{margin:4px 0 0;font-size:12px;color:#595959;line-height:1.5}.content-recommend-question-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}.content-recommend-cta{font-size:12px;color:#0958d9;white-space:nowrap}.content-detail-page .content-back-link{display:inline-block;margin-bottom:16px;color:#1677ff;text-decoration:none;font-size:14px}.content-detail-cover{width:100%;max-height:360px;object-fit:cover;border-radius:8px;margin-bottom:20px}.content-detail-lead{font-size:16px;line-height:1.75;color:#595959;margin-bottom:24px}.content-detail-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:12px 0 20px;font-size:13px;color:#8c8c8c}.content-meta-item{display:inline-flex;align-items:center;gap:4px;white-space:nowrap}.content-meta-icon{font-size:12px;line-height:1}.list-item-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:6px 0 8px}.list-item-meta-text{font-size:12px;color:#8c8c8c}.content-empty{color:#8c8c8c}.content-comment-section{margin-top:32px;background:#fff;border-radius:8px;padding:22px 24px;box-shadow:0 2px 8px rgba(0,0,0,.08)}.content-comment-title{margin:0 0 16px;font-size:17px;font-weight:600}.content-comment-muted{color:#8c8c8c;font-size:14px}.content-comment-error{color:#cf1322;font-size:13px;margin:8px 0 0}.content-comment-form{margin-bottom:20px}.content-comment-input{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid #d9d9d9;border-radius:8px;font:inherit;line-height:1.6;resize:vertical}.content-comment-form-actions{margin-top:10px}.content-comment-list{list-style:none;margin:0;padding:0}.content-comment-item{padding:14px 0;border-top:1px solid #f0f0f0}.content-comment-item-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin-bottom:8px}.content-comment-time{color:#8c8c8c;font-size:12px;font-weight:400}.content-comment-body{line-height:1.7;color:#333;white-space:pre-wrap;word-break:break-word}.content-comment-votes{margin-top:6px;font-size:12px;color:#8c8c8c}.content-comment-actions{display:flex;align-items:center;gap:12px;margin-top:6px}.content-comment-reply-btn{border:none;background:transparent;color:#0958d9;cursor:pointer;padding:0;font-size:13px}.content-comment-reply-btn:hover{text-decoration:underline}.content-comment-reply-form{margin-top:10px;padding:12px;background:#fafafa;border-radius:8px}.content-comment-replies{list-style:none;margin:8px 0 0;padding:0}.content-comment-item.content-comment-reply{border-top:none;border-left:2px solid #e8e8e8;padding-left:12px;margin-top:8px;padding-top:8px;padding-bottom:8px}.knowledge-neighbors{margin:28px 0 8px;padding:20px 22px;background:#fff;border:1px solid #f0f0f0;border-radius:10px}.knowledge-neighbors-title{margin:0 0 6px;font-size:1.25rem}.knowledge-neighbors-lead{margin:0 0 16px;color:#595959;font-size:.95rem}.knowledge-neighbors-block{margin-bottom:16px}.knowledge-neighbors-block h3{margin:0 0 8px;font-size:1rem}.knowledge-neighbors-tags{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.knowledge-neighbors-tag{display:inline-block;padding:4px 10px;border-radius:999px;background:#e6f4ff;color:#0958d9;text-decoration:none;font-size:.9rem}.knowledge-neighbors-tag:hover{background:#bae0ff}.knowledge-neighbors-tag-muted{background:#f5f5f5;color:#434343}.knowledge-neighbors-list{list-style:none;margin:0;padding:0}.knowledge-neighbors-list li{margin-bottom:8px}.knowledge-neighbors-list p{margin:2px 0 0;color:#8c8c8c;font-size:.85rem}.knowledge-neighbors-link{color:#0958d9;text-decoration:none;font-weight:500}.knowledge-neighbors-link:hover{text-decoration:underline}.knowledge-neighbors-cta{display:inline-flex;margin-top:4px}.concept-term-link{color:#0958d9;text-decoration:underline;-webkit-text-decoration-style:dotted;text-decoration-style:dotted;text-underline-offset:2px}.concept-term-link:hover{color:#003eb3}:root{--background:#f0f2f5;--foreground:#1f1f1f}body,html{max-width:100vw;overflow-x:hidden}body{color:var(--foreground);background:var(--background);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;padding:0;margin:0}a{color:inherit}