:root{--bg:#ffffff;--fg:#1f2328;--muted:#59636e;--border:#d1d9e0;--surface:#f6f8fa;
--strong-surface:#ffffff;--mermaid-canvas-bg:#ffffff;--overlay:rgba(12,17,25,.68);
--accent:#0868cf;--accent-soft:rgba(8,104,207,.1);--code-bg:#f6f8fa;--shadow:0 8px 24px rgba(31,35,40,.12)}
@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--fg:#f0f6fc;--muted:#9198a1;
--border:#3d444d;--surface:#151b23;--accent:#6aa7ff;--accent-soft:rgba(106,167,255,.15);
--strong-surface:#1b2534;--mermaid-canvas-bg:#0d1117;--overlay:rgba(5,8,13,.82);
--code-bg:#151b23;--shadow:0 8px 24px rgba(0,0,0,.5)}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);overflow-wrap:break-word;
font:16px/1.8 "SF Pro Text","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif}
.progress-track{position:fixed;top:0;left:0;right:0;width:100%;height:3px;z-index:60;
border:0;border-radius:0;background:transparent;appearance:none}
.progress-track::-webkit-progress-bar{background:transparent}
.progress-track::-webkit-progress-value{background:var(--accent)}
.progress-track::-moz-progress-bar{background:var(--accent)}
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:12px;
padding:10px 16px;background:var(--bg);border-bottom:1px solid var(--border)}
.doc-title{flex:1;min-width:0;font-weight:650;font-size:15px;white-space:nowrap;
overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;gap:8px;flex:none;align-items:center}
.shell-version{font-size:11px;color:var(--muted);white-space:nowrap}
a.topbar-btn{display:inline-flex;align-items:center;text-decoration:none}
.topbar-btn{min-height:36px;padding:6px 12px;border:1px solid var(--border);border-radius:8px;
background:var(--bg);color:var(--fg);font-size:13px;cursor:pointer}
.topbar-btn:hover{background:var(--surface)}
.toc-toggle{display:none;font-size:16px;line-height:1}
.layout{display:flex;max-width:1360px;margin:0 auto;align-items:flex-start}
.toc{position:sticky;top:57px;flex:none;width:280px;max-height:calc(100vh - 57px);
overflow:auto;padding:16px 8px 40px 16px}
.toc-filter{width:100%;margin-bottom:10px;padding:7px 10px;border:1px solid var(--border);
border-radius:8px;background:var(--bg);color:var(--fg);font-size:13px}
.toc ul{list-style:none;margin:0;padding:0}
.toc li.hidden{display:none}
.toc a{display:block;padding:5px 10px;border-radius:6px;color:var(--muted);font-size:13px;
line-height:1.5;text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc a:hover{color:var(--fg);background:var(--surface)}
.toc a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}
.toc .toc-level-2>a{padding-left:24px}
.toc .toc-level-3>a{padding-left:38px}
.toc-mask{display:none}
.content{flex:1;min-width:0;padding:36px 40px 120px}
article.markdown-body{max-width:880px;margin:0 auto}
.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,
.markdown-body h5,.markdown-body h6{position:relative;font-weight:650;line-height:1.35;
scroll-margin-top:76px;font-family:"SF Pro Display","PingFang SC","Microsoft YaHei",system-ui,sans-serif}
.markdown-body h1{font-size:30px;margin:1.2em 0 .7em;letter-spacing:-.01em}
.markdown-body h2{font-size:23px;margin:2em 0 .7em;padding-bottom:.35em;border-bottom:1px solid var(--border)}
.markdown-body h3{font-size:19px;margin:1.5em 0 .6em}
.markdown-body h4{font-size:16px;margin:1.3em 0 .5em}
.markdown-body h5,.markdown-body h6{font-size:14px;margin:1.2em 0 .5em;color:var(--muted)}
.anchor-copy{position:absolute;left:-26px;top:50%;transform:translateY(-50%);border:0;
background:none;color:var(--muted);font-size:15px;cursor:pointer;opacity:0;padding:2px 6px}
.markdown-body h1:hover .anchor-copy,.markdown-body h2:hover .anchor-copy,
.markdown-body h3:hover .anchor-copy,.markdown-body h4:hover .anchor-copy,
.markdown-body h5:hover .anchor-copy,.markdown-body h6:hover .anchor-copy,
.anchor-copy:focus{opacity:1}
.markdown-body p{margin:0 0 1em}
.markdown-body ul,.markdown-body ol{margin:0 0 1em;padding-left:1.8em}
.markdown-body li{margin:.25em 0}
.markdown-body li>input[type=checkbox]{margin-right:.45em}
.markdown-body blockquote{margin:0 0 1em;padding:.6em 1em;border-left:4px solid var(--accent);
background:var(--surface);color:var(--muted);border-radius:0 8px 8px 0}
.markdown-body blockquote>:last-child{margin-bottom:0}
.markdown-body hr{border:0;border-top:1px solid var(--border);margin:2em 0}
.markdown-body a{color:var(--accent);text-decoration:none}
.markdown-body a:hover{text-decoration:underline}
.markdown-body a[target="_blank"]::after{content:"↗";font-size:.75em;margin-left:2px;vertical-align:super}
.markdown-body a[href="#__blocked-link__"]{color:var(--muted);text-decoration:line-through;cursor:not-allowed}
.markdown-body a[href="#__blocked-link__"]::after{content:"（链接已被安全策略阻止）";
font-size:12px;text-decoration:none;display:inline-block;margin-left:4px}
.markdown-body img{max-width:100%;height:auto;border-radius:8px;cursor:zoom-in}
.img-fallback{display:block;margin:0 0 1em;padding:14px 16px;border:1px dashed var(--border);
border-radius:8px;background:var(--surface)}
.img-fallback-title{display:block;font-size:14px;color:var(--fg)}
.img-fallback-src{display:block;margin-top:4px;font-size:12px;color:var(--muted);
font-family:SFMono-Regular,Consolas,Menlo,monospace;overflow-wrap:anywhere}
.markdown-body code{font-family:SFMono-Regular,"Cascadia Mono",Consolas,Menlo,monospace;
font-size:85%;background:var(--code-bg);border:1px solid var(--border);
border-radius:6px;padding:.15em .4em}
.markdown-body pre{margin:0;padding:14px 16px;overflow:auto;background:var(--code-bg);
line-height:1.6;font-size:13px}
.markdown-body pre code{background:none;border:0;padding:0;font-size:inherit;white-space:pre}
.codeblock{margin:0 0 1.1em;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.codeblock-head{display:flex;align-items:center;justify-content:space-between;
padding:6px 12px;background:var(--surface);border-bottom:1px solid var(--border)}
.codeblock-lang{font-size:11px;font-weight:650;letter-spacing:.06em;color:var(--muted)}
.copy-btn{border:1px solid var(--border);border-radius:6px;background:var(--bg);
color:var(--muted);font-size:12px;padding:3px 10px;cursor:pointer}
.copy-btn:hover{color:var(--fg);background:var(--surface)}
.mermaid-diagram{margin:0 0 1.1em;border:1px solid var(--border);
border-radius:12px;background:var(--strong-surface);overflow:hidden}
.mermaid-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;
min-height:48px;padding:4px 8px 4px 14px;background:var(--surface);border-bottom:1px solid var(--border)}
.mermaid-label{font-size:12px;font-weight:650;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.mermaid-switcher{display:flex;align-items:center;gap:4px;padding:3px;border:1px solid var(--border);
border-radius:10px;background:var(--bg)}
.mermaid-view-btn{min-width:64px;min-height:40px;padding:6px 12px;border:0;border-radius:8px;
background:transparent;color:var(--muted);font-size:13px;font-weight:600;cursor:pointer}
.mermaid-view-btn:hover{color:var(--fg);background:var(--surface)}
.mermaid-view-btn[aria-pressed="true"]{color:var(--accent);background:var(--accent-soft)}
.mermaid-view-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mermaid-canvas{display:flex;justify-content:center;min-width:0;padding:18px;background:var(--mermaid-canvas-bg)}
.mermaid-canvas picture{display:flex;width:100%;justify-content:center}
.mermaid-canvas svg{display:block;width:100%;max-width:100%;height:auto}
.mermaid-canvas img{display:block;width:100%;max-width:100%;height:auto;border-radius:6px}
.mermaid-source{min-width:0;background:var(--bg)}
.mermaid-source .codeblock{margin:0;border:0;border-radius:0;background:var(--bg)}
.mermaid-source .codeblock-head{padding:8px 14px}
.mermaid-source pre{max-height:480px}
.table-wrap{overflow-x:auto;margin:0 0 1.1em;border:1px solid var(--border);border-radius:10px}
.markdown-body table{border-collapse:collapse;width:max-content;min-width:100%;font-size:14px}
.markdown-body th,.markdown-body td{border:1px solid var(--border);padding:8px 12px;
text-align:left;vertical-align:top}
.markdown-body thead th{background:var(--surface);font-weight:650}
.markdown-body tbody tr:nth-child(even){background:color-mix(in srgb,var(--surface) 55%,transparent)}
.table-wrap table{border-style:hidden}
.markdown-body .footnotes{margin-top:2.5em;font-size:14px;color:var(--muted)}
.doc-info{margin:0 0 1.6em;border:1px solid var(--border);border-radius:10px;
background:var(--surface);padding:10px 14px;font-size:13px}
.doc-info summary{cursor:pointer;font-weight:650;color:var(--muted)}
.doc-info table{margin-top:8px;border-collapse:collapse}
.doc-info th{text-align:left;padding:3px 14px 3px 0;color:var(--muted);font-weight:600;white-space:nowrap}
.doc-info td{padding:3px 0;overflow-wrap:anywhere}
.inline-toc{margin:0 0 1.4em;padding:14px 18px;border:1px solid var(--border);
border-radius:10px;background:var(--surface)}
.inline-toc ul{list-style:none;margin:0;padding:0}
.inline-toc .toc-level-2{padding-left:18px}
.inline-toc .toc-level-3{padding-left:36px}
.inline-toc a{display:block;padding:3px 0;color:var(--accent);font-size:14px;text-decoration:none}
.inline-toc a:hover{text-decoration:underline}
.back-top{position:fixed;right:22px;bottom:26px;width:42px;height:42px;border-radius:50%;
border:1px solid var(--border);background:var(--bg);color:var(--fg);font-size:17px;
cursor:pointer;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .18s;z-index:45}
.back-top.show{opacity:1;pointer-events:auto}
.lightbox{position:fixed;inset:0;z-index:70;display:none;align-items:center;justify-content:center;
background:var(--overlay);padding:24px}
.lightbox.show{display:flex}
.lightbox-dialog{position:relative;display:flex;align-items:center;justify-content:center;
width:min(1480px,calc(100vw - 48px));height:min(900px,calc(100vh - 48px));
padding:56px 20px 20px;border:1px solid var(--border);border-radius:16px;
background:var(--strong-surface);box-shadow:var(--shadow)}
.lightbox-close{position:absolute;right:12px;top:10px;min-width:64px;min-height:40px;
padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);
color:var(--fg);font-size:13px;cursor:pointer}
.lightbox-close:hover{background:var(--surface)}
.lightbox-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.lightbox img{display:block;max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;
background:var(--mermaid-canvas-bg);cursor:default}
body.lightbox-open{overflow:hidden}
@media (prefers-reduced-transparency:reduce){.lightbox{background:#0c1119}}
.toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,12px);z-index:80;
padding:9px 18px;border-radius:8px;background:var(--fg);color:var(--bg);font-size:13px;
opacity:0;pointer-events:none;transition:opacity .18s,transform .18s}
.toast.show{opacity:1;transform:translate(-50%,0)}
.reader-copy-buffer{position:fixed;left:-10000px;top:0;width:1px;height:1px;opacity:0}
@media (max-width:1100px){
.toc-toggle{display:inline-block}
.toc{position:fixed;left:0;top:57px;bottom:0;width:min(300px,82vw);z-index:55;background:var(--bg);
border-right:1px solid var(--border);transform:translateX(-105%);transition:transform .2s}
body.toc-open .toc{transform:none;box-shadow:var(--shadow)}
body.toc-open .toc-mask{display:block;position:fixed;inset:57px 0 0 0;z-index:50;background:rgba(8,12,20,.35)}
.content{padding:26px 20px 100px}
}
@media (max-width:520px){
.content{padding:20px 14px 90px}
.markdown-body h1{font-size:25px}
.markdown-body h2{font-size:20px}
.markdown-body pre{font-size:12px}
.mermaid-diagram{padding:0}
.mermaid-toolbar{align-items:flex-start;flex-direction:column;padding:10px 12px}
.mermaid-switcher{width:100%}
.mermaid-view-btn{flex:1}
.mermaid-canvas{min-width:680px;padding:12px}
.mermaid-canvas svg{width:auto;max-width:none}
.lightbox{padding:12px}
.lightbox-dialog{width:calc(100vw - 24px);height:calc(100vh - 24px);padding:52px 10px 10px}
.topbar-btn{padding:6px 10px}
}
@media print{
.topbar,.toc,.toc-mask,.back-top,.progress-track,.anchor-copy,.copy-btn,.toast,.lightbox,
.mermaid-toolbar{display:none!important}
.content{padding:0}
body{background:#fff;color:#000}
.codeblock,.table-wrap{border-color:#bbb}
a{color:#000}
}