:root{--blue:#2563eb;--ink:#202938;--muted:#6b7280;--line:#e8ebf0;--header:68px;--sidebar-width:258px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;color:var(--ink);font:15px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:white}a{color:var(--blue);text-decoration:none}button,input{font:inherit}button,a,input{outline-offset:4px}a:hover{text-decoration:underline}.skip{position:fixed;top:-80px;background:white;padding:10px;z-index:30}.skip:focus{top:0}.topbar{height:var(--header);position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:26px;padding:0 30px}.brand{display:flex;align-items:center;gap:10px;color:#1e293b;white-space:nowrap;font-size:18px;letter-spacing:.4px}.brand:hover{text-decoration:none}.brand-mark{font-weight:800;letter-spacing:-1.5px;color:#fff;background:#2261be;border-radius:6px;padding:0 7px;font-size:23px}.brand b{font-weight:500;margin-left:14px;font-size:15px;border-left:1px solid #ddd;padding-left:18px}#search-form{margin-left:0;width:280px;border:1px solid #e1e5ec;background:#f8fafc;border-radius:7px;display:flex;align-items:center;gap:9px;padding:5px 12px;color:#8993a3}#search{border:0;outline:0;background:transparent;min-width:0;width:100%;font-size:13px}kbd{font:12px monospace;color:#9098a5}.website,#language{font-size:13px;white-space:nowrap;color:#475569}.mobile-menu{display:none}.layout{display:grid;grid-template-columns:var(--sidebar-width) 9px minmax(0,850px) 200px;max-width:1569px;margin:auto;min-height:calc(100vh - var(--header))}.sidebar{height:calc(100vh - var(--header));position:sticky;top:var(--header);overflow:auto;padding:26px 18px 20px}.sidebar-resizer{position:sticky;top:var(--header);height:calc(100vh - var(--header));cursor:col-resize;touch-action:none;z-index:4;display:flex;justify-content:center;outline-offset:-2px}.sidebar-resizer:before{content:"";width:1px;height:100%;background:var(--line);transition:width .12s,background .12s}.sidebar-resizer:hover:before,.sidebar-resizer:focus-visible:before,body.sidebar-resizing .sidebar-resizer:before{width:3px;background:var(--blue)}body.sidebar-resizing{cursor:col-resize;user-select:none}.nav-caption{font-size:11px;letter-spacing:1.5px;color:#8b94a4;margin:0 12px 16px}.sidebar a{color:#566174;display:block;font-size:13px;padding:7px 10px;line-height:1.5;border-radius:5px}.sidebar a:hover{background:#f6f8fc;text-decoration:none;color:var(--blue)}.sidebar a.active{color:var(--blue);background:#edf4ff;font-weight:600}.tree-group{margin:5px 0}.tree-group summary{list-style:none;display:flex;align-items:center;gap:2px;cursor:pointer}.tree-group summary::-webkit-details-marker{display:none}.tree-group summary:before{content:'›';font-size:19px;line-height:24px;width:14px;flex:none;color:#8b94a4;transition:transform .15s}.tree-group[open]>summary:before{transform:rotate(90deg)}.tree-group summary a,.tree-group summary .folder{flex:1;font-weight:600;padding:8px 6px;color:#334155;font-size:13px}.tree-children{border-left:1px solid #e8ecf3;margin-left:7px;padding-left:10px}.tree-children .tree-group summary a{font-weight:500}.sidebar-foot{border-top:1px solid var(--line);padding:22px 10px 0;margin-top:35px;font-size:11px;color:#9aa1ac}main{padding:32px 48px 26px;min-width:0}#breadcrumb{font-size:12px;color:#929aaa;display:flex;gap:8px;flex-wrap:wrap;margin-bottom:27px}#breadcrumb a{color:#6b7280}h1{font-size:34px;line-height:1.3;letter-spacing:-.7px;margin:10px 0 16px}h2{font-size:23px;line-height:1.4;margin:40px 0 16px;padding-top:6px;letter-spacing:-.3px}h3{font-size:18px;margin:28px 0 12px}p{margin:13px 0;color:#4b5563}ul,ol{padding-left:25px}li{margin:6px 0;color:#4b5563}.page-description{font-size:16px;color:#7a8493;margin-bottom:24px}.page-body{overflow-wrap:anywhere}.page-body img{max-width:100%;height:auto}.page-body pre{overflow:auto;background:#f6f8fb;padding:18px;border-radius:7px}.page-body table{border-collapse:collapse;width:100%;margin:22px 0;font-size:14px}.page-body th,.page-body td{border:1px solid #e1e6ee;padding:11px 14px;text-align:left}.page-body th{background:#f8fafc}.notice{border-left:3px solid #719be8;background:#f3f7ff;border-radius:0 6px 6px 0;padding:12px 17px;color:#53637b;font-size:13px;margin:24px 0}.eyebrow{font-size:11px;color:var(--blue);letter-spacing:2px;font-weight:600}.product-grid,.alg-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.product-card,.alg-card{border:1px solid var(--line);border-radius:8px;padding:20px;display:block;color:var(--ink)}.product-card:hover{border-color:#94b5ed;text-decoration:none;background:#fafcff}.product-card strong{display:block;font-size:17px}.product-card span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}.alg-card h2{font-size:18px;margin-top:0}.alg-hero{padding-bottom:16px;border-bottom:1px solid var(--line)}.alg-hero h1{display:none}.alg-eyebrow{font-size:12px;color:var(--blue);letter-spacing:2px}.toc{position:sticky;top:var(--header);height:calc(100vh - var(--header));overflow:auto;padding:36px 20px 24px 16px;font-size:12px}.toc>div{font-weight:600;margin-bottom:15px;color:#475569}#toc{border-left:1px solid var(--line)}#toc a{display:block;line-height:1.6;color:#8a93a1;padding:6px 12px;border-left:2px solid transparent;margin-left:-1px}#toc a.sub{padding-left:23px;font-size:11px}#toc a:hover,#toc a.current{color:var(--blue);text-decoration:none}#toc a.current{border-left-color:var(--blue)}.back-top{display:block;color:#929aaa;font-size:11px;margin:25px 0 0 13px}#pagination{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:56px 0 32px}#pagination a{border:1px solid #e1e6ed;border-radius:7px;padding:14px 18px;line-height:1.6;display:block}#pagination a:hover{border-color:var(--blue);text-decoration:none}#pagination small{display:block;color:#929aaa;font-size:11px}#pagination strong{display:block;font-size:14px;font-weight:500}#pagination .next{text-align:right;grid-column:2}#footer{border-top:1px solid var(--line);padding-top:22px;color:#a1a8b3;font-size:11px}#search-results{border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:20px}#search-results a{display:block;padding:10px;background:#f7f9fd;margin:8px 0;border-radius:5px}#search-results button{border:0;background:none;color:#64748b;cursor:pointer;float:right}.loading{color:#94a3b8}
@media(min-width:1450px){:root{--sidebar-width:280px}main{padding-left:62px;padding-right:62px}.layout{grid-template-columns:var(--sidebar-width) 9px minmax(0,1fr) 220px}}@media(max-width:1100px){:root{--sidebar-width:215px}.layout{grid-template-columns:var(--sidebar-width) 9px minmax(0,1fr) 150px}main{padding:28px}.topbar{gap:17px;padding:0 20px}.brand b{display:none}#search-form{width:230px}.toc{padding-right:10px}.sidebar{padding:23px 12px}h1{font-size:29px}}@media(max-width:800px) and (min-width:681px){:root{--sidebar-width:178px}.layout{grid-template-columns:var(--sidebar-width) 9px minmax(0,1fr) 125px}main{padding:24px 20px}.sidebar{padding:24px 7px}.sidebar a,.tree-group summary a,.tree-group summary .folder{font-size:12px}.toc{padding-left:9px;font-size:11px}.topbar{gap:15px;padding:0 16px}#search-form{width:190px}.website{display:none}.product-grid,.alg-grid{grid-template-columns:1fr}h1{font-size:25px}h2{font-size:20px}#pagination{gap:8px}#pagination a{padding:10px;font-size:12px}}
@media(max-width:680px){:root{--header:60px}.topbar{padding:0 14px;gap:13px}.brand{font-size:15px}.brand-mark{font-size:19px}.mobile-menu{display:block;background:none;border:0;color:#475569;font-size:20px;padding:3px;order:-1}.website{display:none}#search-form{width:auto;flex:1;padding:4px 8px}#search{font-size:12px}kbd{display:none}#language{font-size:11px}.layout{display:block}.sidebar-resizer{display:none}.sidebar{display:none;position:fixed;left:0;top:var(--header);width:285px;background:#fff;z-index:9;box-shadow:12px 0 50px #25324b20}.sidebar.open{display:block}.toc{position:static;height:auto;padding:15px 23px;border-bottom:1px solid var(--line);display:none}main{padding:24px}h1{font-size:28px}h2{font-size:22px}.product-grid,.alg-grid{grid-template-columns:1fr}#breadcrumb{margin-bottom:20px}#pagination{margin-top:36px;gap:10px}#pagination a{padding:12px}.page-description{font-size:14px}}

.mobile-toc{display:none}@media(max-width:680px){.mobile-toc{display:block;border:1px solid var(--line);border-radius:6px;padding:10px 14px;font-size:13px;margin-bottom:22px;color:#64748b}.mobile-toc a{display:block;font-size:12px;padding:4px 8px}.mobile-toc a.sub{padding-left:22px}.mobile-toc summary{cursor:pointer}}
.page-body .doc-link-paragraph{margin:20px 0}
.page-body .doc-link-card{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;font-size:16px;font-weight:600;line-height:1.6}
.page-body .doc-link-card::after{content:'→';flex-shrink:0;color:var(--blue);font-size:19px;font-weight:400}
.page-body .doc-link-card.doc-link-has-arrow::after{content:none}
.page-body .doc-link-card:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.page-body .doc-link-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.page-body .doc-link-grid .doc-link-card{min-width:0;height:100%}
@media(max-width:680px){.page-body .doc-link-grid{grid-template-columns:1fr}}

.page-body .doc-link-copy{min-width:0}
.page-body .doc-link-card .doc-link-title{font-size:16px;line-height:1.6}
.page-body .doc-link-card .doc-link-subtitle{display:block;margin-top:6px;font-size:13px;font-weight:400;color:var(--muted);line-height:1.65}

/* Keep the editor's table width and column proportions in the reading layout. */
.page-body figure.table{width:100%;max-width:100%;margin:22px 0;overflow-x:auto}
.page-body figure.table>table{margin:0;height:100%}
.page-body table.doc-sized-table{table-layout:fixed}

.github-link{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;flex-shrink:0;color:#475569;border-radius:6px}
.github-link:hover{color:#0f172a;background:#f1f5f9;text-decoration:none}
.github-link:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
@media(max-width:680px){.github-link{width:28px;height:28px}.github-link svg{width:20px;height:20px}}

/* Readable code blocks, shared with the visual editor. */
.page-body code,.page-body pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:13px;line-height:1.75;letter-spacing:0;font-weight:400;text-shadow:none!important;font-variant-ligatures:none}
.page-body :not(pre)>code{padding:2px 5px;background:#f1f5f9;border-radius:4px;color:#334155}
.page-body .code-block{margin:20px 0;border:1px solid #dfe5ed;border-radius:8px;overflow:hidden;background:#f6f8fa}
.code-toolbar{display:flex;align-items:center;justify-content:space-between;padding:7px 14px;border-bottom:1px solid #e2e8f0;background:#eef2f6;color:#64748b;font-size:12px;line-height:1.5}
.code-copy{border:0;background:transparent;color:#475569;padding:3px 7px;cursor:pointer;border-radius:4px;font-size:12px}.code-copy:hover{background:#dfe7f0;color:#1e293b}
.page-body .code-block pre{margin:0;padding:16px 18px;background:transparent;border:0;border-radius:0;white-space:pre;overflow-x:auto;color:#24292f;tab-size:4}
.page-body pre code{font:inherit;color:inherit;background:transparent;padding:0;text-shadow:none!important}.page-body pre *{text-shadow:none!important}

/* Single link cards occupy one column, matching two-card rows. */
.page-body .doc-link-paragraph{width:calc((100% - 16px)/2);max-width:100%}
.page-body .doc-link-card{min-height:116px;padding:22px 24px;align-items:center}
.page-body .doc-link-card .doc-link-subtitle{margin-top:9px;line-height:1.75}
.page-body .doc-link-grid .doc-link-card{width:100%}
@media(max-width:680px){.page-body .doc-link-paragraph{width:100%}.page-body .doc-link-card{min-height:108px;padding:20px}}