:root{--bg:#f6f8fc;--surface:#fff;--text:#20314a;--muted:#63738b;--line:#e0e6ef;--accent:#2459d3;--soft:#edf3ff;--shadow:0 18px 60px #15233b20;color-scheme:light;font-family:Inter,"Segoe UI","Microsoft YaHei",system-ui,sans-serif;font-size:16px}
:root[data-theme=dark]{--bg:#101722;--surface:#17212f;--text:#e3eaf5;--muted:#a6b4c8;--line:#303d50;--accent:#90b4ff;--soft:#22334e;--shadow:0 18px 60px #0006;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);line-height:1.8}body.large-text{font-size:18px}a{color:var(--accent);text-underline-offset:3px}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #6b9bff;outline-offset:3px}.skip{position:fixed;left:10px;top:-80px;z-index:100;background:var(--surface);padding:12px}.skip:focus{top:8px}
.topbar{position:fixed;z-index:20;top:0;left:0;right:0;height:72px;display:flex;align-items:center;gap:16px;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--line)}.brand{text-decoration:none;display:flex;align-items:center;gap:11px;color:var(--text);font-weight:750;white-space:nowrap}.brand-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#2459d3;color:white;font-size:13px;letter-spacing:-1px}.version{background:var(--soft);color:var(--accent);padding:2px 9px;border-radius:20px;font-size:12px}.search-open{margin-left:auto;display:flex;justify-content:space-between;align-items:center;gap:80px;padding:7px 13px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--muted);font-size:14px}kbd{font:11px/1.5 Consolas,monospace;border:1px solid var(--line);border-radius:4px;padding:1px 5px;background:var(--surface)}.icon-button{background:transparent;border:1px solid var(--line);border-radius:8px;padding:5px 10px;color:var(--text);font-size:14px;min-height:35px}.menu-button{display:none}
.sidebar{position:fixed;left:0;top:72px;bottom:0;width:252px;overflow-y:auto;padding:26px 18px 40px 24px;border-right:1px solid var(--line);background:var(--surface);font-size:14px;z-index:15}.nav-label{font-size:11px;letter-spacing:.12em;color:var(--muted);font-weight:700;margin:0 8px 10px}.sidebar a{display:block;text-decoration:none;padding:6px 10px;margin:2px 0;color:var(--muted);border-radius:7px;line-height:1.6}.sidebar a:hover{background:var(--bg);color:var(--text)}.sidebar a[aria-current=page]{background:var(--soft);color:var(--accent);font-weight:650}.sidebar details{margin-top:20px}.sidebar summary{cursor:pointer;color:var(--text);font-weight:650;padding:4px 8px}.sidebar .nested{padding-left:8px}.sidebar .footnote{font-size:12px;margin:26px 8px;color:var(--muted)}
main{margin:72px 228px 0 252px;padding:42px 42px 75px;min-width:0;max-width:1180px;background:var(--surface);min-height:calc(100vh - 72px)}.eyebrow{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:12px;margin-bottom:17px;letter-spacing:.04em}.eyebrow span{height:5px;width:5px;border-radius:50%;background:var(--accent)}h1{font-size:32px;line-height:1.35;letter-spacing:-.025em;margin:0 0 24px;color:var(--text);overflow-wrap:anywhere}h2{font-size:23px;line-height:1.45;margin:44px 0 18px;padding-top:4px;border-top:1px solid var(--line);padding-top:24px;overflow-wrap:anywhere}h3{font-size:18px;margin:28px 0 12px}h4{font-size:15px;margin:22px 0 8px}p{margin:13px 0}li{margin:5px 0}ul,ol{padding-left:24px}strong{font-weight:650}blockquote{margin:20px 0;padding:8px 18px;border-left:3px solid #4b82eb;border-radius:0 8px 8px 0;background:var(--soft)}blockquote p{margin:7px 0}code{font-family:"Cascadia Code",Consolas,"Microsoft YaHei",monospace;font-size:.89em}p code,li code,td code{background:var(--soft);padding:2px 5px;border-radius:4px;overflow-wrap:anywhere;color:var(--text)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:9px;margin:20px 0;max-width:100%}table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.7}th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;min-width:80px}th{font-size:12px;color:var(--muted);font-weight:650;background:var(--bg);white-space:nowrap}tr:last-child td{border-bottom:0}td:first-child{min-width:130px}td{overflow-wrap:anywhere}.code-block{margin:20px 0;border:1px solid #25354c;border-radius:10px;overflow:hidden;background:#111d30;box-shadow:0 3px 12px #10213c08}.code-toolbar{display:flex;align-items:center;justify-content:space-between;background:#1b2940;color:#b5c6df;padding:7px 14px;font-size:11px;line-height:1.7;letter-spacing:.03em}.copy-code{border:1px solid #425471;background:transparent;color:#d6e2f3;border-radius:5px;padding:2px 9px;font-size:11px}.copy-code:hover{background:#304563}.code-block pre{margin:0;overflow:auto;padding:18px 20px;line-height:1.7;font-size:13px;color:#dfe8f8;tab-size:4;white-space:pre}.code-block code{font-size:inherit;color:inherit;background:transparent}.highlight .k,.highlight .kn,.highlight .kd,.highlight .kc{color:#c4b5fd}.highlight .s,.highlight .s1,.highlight .s2,.highlight .sa,.highlight .sd,.highlight .sb{color:#9be4c0}.highlight .c,.highlight .c1,.highlight .cm,.highlight .ch{color:#93a4bd;font-style:italic}.highlight .nf,.highlight .nc,.highlight .nn{color:#83c5ff}.highlight .nb,.highlight .bp{color:#82ddd5}.highlight .mi,.highlight .mf,.highlight .mh{color:#f7c78c}.highlight .o,.highlight .ow{color:#edacc5}.highlight .p{color:#c0cee2}.highlight .err{color:#ffd8df}.signature .code-toolbar{background:#24324b}.signature pre{font-size:12px}
.toc{position:fixed;right:0;top:72px;bottom:0;width:228px;overflow:auto;padding:32px 22px;font-size:12px}.toc-title{font-weight:700;color:var(--text);margin-bottom:12px}.toc a{display:block;color:var(--muted);text-decoration:none;padding:5px 0 5px 12px;border-left:1px solid var(--line);line-height:1.6;overflow-wrap:anywhere}.toc a.active{color:var(--accent);border-left:2px solid var(--accent);font-weight:600}.toc a.level3{padding-left:23px;font-size:11px}.page-footer{margin-top:50px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}dialog{width:min(760px,calc(100vw - 28px));padding:0;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin:11vh auto auto}dialog::backdrop{background:#14223b80;backdrop-filter:blur(3px)}.search-head{display:flex;align-items:center;gap:12px;padding:18px;border-bottom:1px solid var(--line)}#search-input{flex:1;width:100%;border:0;outline:none!important;background:transparent;color:var(--text);font-size:17px}.search-body{max-height:62vh;overflow:auto;padding:8px}.search-message{padding:14px 18px;color:var(--muted);font-size:13px}.search-result{display:block;border-radius:9px;padding:12px 16px;text-decoration:none;color:var(--text)}.search-result:hover{background:var(--soft)}.search-result strong{display:block;font-size:14px;color:var(--accent)}.search-result small{display:block;color:var(--muted);font-size:12px;margin-top:4px;line-height:1.5}.search-bottom{padding:10px 18px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}
@media(min-width:1660px){main{margin-left:calc((100vw - 1660px)/2 + 252px);max-width:1180px}.sidebar{left:calc((100vw - 1660px)/2)}.toc{right:calc((100vw - 1660px)/2)}}
@media(max-width:1180px){.toc{display:none}main{margin-right:0;padding:35px}.search-open{gap:35px}}
@media(max-width:820px){.topbar{padding:0 14px;gap:9px;height:64px}.brand-label{font-size:14px}.version{font-size:10px}.search-open{font-size:12px;gap:0;padding:6px 9px}.search-open kbd{display:none}.icon-button{font-size:12px;padding:5px 7px}.menu-button{display:inline-block}.sidebar{top:64px;transform:translateX(-100%);transition:transform .15s;box-shadow:var(--shadow)}body.nav-open .sidebar{transform:none}main{margin:64px 0 0;padding:28px 18px;min-height:calc(100vh - 64px)}h1{font-size:27px}h2{font-size:21px}table{min-width:580px}.code-block pre{font-size:12px;padding:15px}.page-footer{gap:16px}.font-button{display:none}}
@media print{.sidebar,.topbar,.toc,.code-toolbar,dialog,.page-footer{display:none!important}main{margin:0;padding:0;max-width:none}.code-block{border:1px solid #aaa;box-shadow:none}pre{white-space:pre-wrap!important}body{background:white;color:black}.table-wrap{overflow:visible}table{min-width:0;font-size:10px}h2{break-after:avoid}a{color:inherit}p,td{color:black}}
.signature pre{white-space:pre-wrap;overflow-wrap:anywhere}.menu-button{white-space:nowrap}@media(max-width:820px){.search-open{flex:1;justify-content:center}.search-open span{font-size:0}.search-open span::after{content:"搜索";font-size:12px}#theme-toggle{white-space:nowrap}.topbar{gap:7px}.brand{gap:7px}}