@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root{color-scheme:light;--paper:#f8f9f7;--white:#fff;--ink:#202522;--muted:#7d8580;--line:#e7eae6;--accent:#37765d;--accent-soft:#edf4ef;--serif:Georgia,'Noto Serif SC',serif;--sans:'DM Sans','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--mono:'DM Mono',ui-monospace,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;-webkit-font-smoothing:antialiased}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:272px;background:#f3f5f2;border-right:1px solid var(--line);padding:31px 21px 20px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none;margin:0 0 52px 3px}.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:600}.brand strong{display:block;font-size:15px;letter-spacing:.05em}.brand small{display:block;margin-top:2px;font-family:var(--mono);font-size:8px;letter-spacing:.12em;color:#9aa29c}.sidebar-label{display:flex;justify-content:space-between;align-items:center;color:#68726b;font-size:11px;font-weight:600;letter-spacing:.08em;padding:0 5px 12px}.sidebar-label span{font:10px var(--mono);color:#a0a8a1}.search-box{height:39px;background:#fff;border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;gap:8px;padding:0 9px;color:#9ca49d}.search-box svg{width:15px;fill:none;stroke:currentColor;stroke-width:1.6}.search-box input{border:0;outline:0;min-width:0;flex:1;background:transparent;color:var(--ink);font:12px var(--sans)}.search-box input::placeholder{color:#a2aaa4}.search-box kbd{font:10px var(--mono);border:1px solid var(--line);border-radius:3px;padding:1px 5px;color:#a0a8a1}.document-list{overflow-y:auto;margin:17px -7px 0;padding:0 4px;flex:1}.doc-group-title{color:#a0a8a1;font:9px var(--mono);letter-spacing:.12em;padding:13px 8px 7px}.doc-item{width:100%;display:block;border:0;background:transparent;text-align:left;text-decoration:none;color:#59625c;border-radius:7px;padding:10px 9px;margin:2px 0;cursor:pointer;font:12px/1.55 var(--sans);transition:background .15s,color .15s}.doc-item:hover{background:#e9eee9;color:var(--ink)}.doc-item.active{background:#e6eee8;color:#285b44;font-weight:600}.doc-item .doc-title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-item .doc-date{display:block;color:#a1a9a3;font:9px var(--mono);margin-top:3px}.empty-list{padding:16px 9px;color:#9aa29c;font-size:11px;line-height:1.7}.sidebar-foot{font-size:10px;color:#89928b;border-top:1px solid #e4e8e3;padding:16px 4px 2px}.status-dot{width:6px;height:6px;display:inline-block;border-radius:50%;background:#75a58b;vertical-align:1px;margin-right:6px}.main-area{margin-left:272px;min-height:100vh;display:flex;flex-direction:column}.topbar{height:66px;padding:0 5.2%;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}.breadcrumb{display:flex;align-items:center;gap:10px;color:#9ba39d;font-size:11px;min-width:0}.breadcrumb strong{color:#48524b;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.crumb-sep{color:#c2c8c3}.top-link{margin-left:auto;text-decoration:none;color:#858e87;font-size:10px}.top-link span{font-size:13px;margin-left:2px}.top-link:hover{color:var(--accent)}.reader-layout{width:min(100%,1280px);margin:0 auto;padding:0 5.2%;flex:1;display:grid;grid-template-columns:minmax(0,760px) 190px;gap:clamp(35px,6vw,90px);justify-content:center}.reader{min-width:0;padding:64px 0 78px}.welcome{padding:47px 0 0 3px}.welcome-kicker{font:9px var(--mono);letter-spacing:.13em;color:#89938c}.welcome h1{font-family:var(--serif);font-size:clamp(35px,4.1vw,54px);line-height:1.38;letter-spacing:-.035em;font-weight:400;margin:32px 0 18px}.welcome h1 span{color:var(--accent)}.welcome>p{font-size:13px;color:#858e88;line-height:1.9;max-width:410px;margin:0}.welcome-note{margin-top:47px;border:1px solid var(--line);background:#fff;border-radius:10px;display:flex;gap:13px;align-items:center;padding:17px 18px;width:min(100%,420px);font-size:12px;color:#4d5850;line-height:1.7}.note-icon{width:26px;height:26px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);border-radius:7px;font-size:17px}.welcome-note code{font:11px var(--mono);color:var(--accent)}.welcome-note small{color:#9aa29c;font-size:10px}.welcome-meta{display:flex;align-items:center;gap:12px;margin-top:78px;color:#a1a9a3;font:9px var(--mono);letter-spacing:.04em}.welcome-meta>span:first-child{color:var(--accent)}.meta-line{height:1px;width:40px;background:#d9dfd9}.toc-panel{position:sticky;top:88px;align-self:start;margin-top:76px;padding-left:18px;border-left:1px solid var(--line);max-height:calc(100vh - 130px);overflow:auto}.toc-title{font-size:10px;color:#626d65;font-weight:600;margin:0 0 13px}.toc-panel nav{display:grid;gap:7px}.toc-panel a{color:#929b94;text-decoration:none;font-size:10px;line-height:1.6;display:block}.toc-panel a.level-3{padding-left:9px}.toc-panel a:hover,.toc-panel a.active{color:var(--accent)}.page-foot{padding:17px 5.2%;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#a1a9a3;font:9px var(--mono);letter-spacing:.04em}.article-view{padding-top:0}.article-meta{display:flex;align-items:center;gap:11px;color:#a0a8a2;font:9px var(--mono);letter-spacing:.08em;margin:0 0 23px}.article-tag{color:var(--accent);background:var(--accent-soft);padding:5px 8px;border-radius:4px}.markdown-body{font-size:14px;line-height:1.95;color:#444d47;overflow-wrap:anywhere}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{color:#252c27;line-height:1.45;letter-spacing:-.02em;scroll-margin-top:24px}.markdown-body h1{font-size:32px;font-family:var(--serif);font-weight:500;margin:0 0 24px}.markdown-body h2{font-size:22px;font-weight:600;margin:52px 0 17px;padding-bottom:10px;border-bottom:1px solid var(--line)}.markdown-body h3{font-size:17px;font-weight:600;margin:34px 0 12px}.markdown-body h4{font-size:14px;margin:25px 0 10px}.markdown-body p{margin:12px 0 17px}.markdown-body a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}.markdown-body strong{color:#303a33;font-weight:600}.markdown-body blockquote{margin:19px 0;padding:5px 17px;border-left:2px solid #8bae98;color:#78827a;background:#f1f4f1}.markdown-body ul,.markdown-body ol{padding-left:24px;margin:12px 0 19px}.markdown-body li{padding:2px 0 2px 3px}.markdown-body li::marker{color:#8da997}.markdown-body code{font: .86em var(--mono);background:#eff2ef;color:#426450;border-radius:4px;padding:2px 5px}.markdown-body pre{overflow:auto;background:#202923;color:#e5eee7;border-radius:9px;padding:17px 19px;margin:20px 0;font:12px/1.75 var(--mono)}.markdown-body pre code{padding:0;background:none;color:inherit;font-size:inherit}.markdown-body table{border-collapse:collapse;width:100%;font-size:12px;line-height:1.7;margin:21px 0;display:block;overflow:auto}.markdown-body th,.markdown-body td{border:1px solid var(--line);text-align:left;padding:8px 10px;min-width:90px}.markdown-body th{background:#f1f4f1;color:#3f4a43;font-weight:600}.markdown-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}.markdown-body img{max-width:100%;height:auto;border-radius:7px}.markdown-body .math-block{overflow-x:auto}.article-footer{border-top:1px solid var(--line);margin-top:58px;padding-top:18px;display:flex;gap:10px;color:#a0a8a2;font:10px var(--mono)}.error-state{padding:22px;border:1px solid #eadfda;background:#fff9f6;border-radius:8px;color:#8d5b4b;font-size:13px}.menu-toggle,.mobile-brand{display:none}.sidebar-backdrop{display:none}
@media(max-width:1100px){.reader-layout{grid-template-columns:minmax(0,760px);}.toc-panel{display:none!important}.reader{max-width:760px}.welcome h1{font-size:46px}}
@media(max-width:720px){.sidebar{width:min(82vw,300px);transform:translateX(-102%);transition:transform .22s ease;box-shadow:12px 0 40px #20252212}.sidebar.open{transform:translateX(0)}.sidebar-backdrop.show{display:block;position:fixed;inset:0;background:#1c241f4d;z-index:4}.main-area{margin-left:0}.topbar{height:58px;padding:0 17px;gap:10px}.menu-toggle{border:0;background:none;color:#657169;display:grid;place-items:center;padding:5px;margin-left:-5px}.menu-toggle svg{width:20px;fill:none;stroke:currentColor;stroke-width:1.7}.mobile-brand{display:flex;align-items:center;gap:7px;font-size:12px}.mobile-brand .brand-mark{width:25px;height:25px;border-radius:7px;font-size:13px}.breadcrumb{margin-left:7px;gap:7px;font-size:10px}.top-link{font-size:9px}.reader-layout{padding:0 20px}.reader{padding:39px 0 55px}.welcome{padding:35px 0 0}.welcome h1{font-size:37px;margin:26px 0 14px}.welcome>p{font-size:12px}.welcome-note{margin-top:35px;padding:14px}.welcome-meta{margin-top:53px}.page-foot{padding:14px 20px;font-size:8px}.markdown-body{font-size:13px}.markdown-body h1{font-size:27px}.markdown-body h2{font-size:20px;margin-top:40px}.markdown-body h3{font-size:16px}.markdown-body table{font-size:11px}.article-meta{margin-bottom:18px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}