:root{--bg:#f2f4f2;--paper:#fff;--fg:#192126;--muted:#667178;--line:#d9dfdc;--accent:#0b6b61;--accent-2:#0b5e9d;--amber:#9a6700;--danger:#a33a3a;--code-bg:#17211f;--code-fg:#e9f5f1;--soft:#eef4f2;--shadow:0 10px 30px rgba(22,40,36,.07)}
html[data-theme="dark"]{--bg:#111616;--paper:#182020;--fg:#e8efec;--muted:#a4b1ac;--line:#34413d;--accent:#5bc4b4;--accent-2:#79b9eb;--amber:#e1b34b;--danger:#ef8c8c;--code-bg:#0b1010;--code-fg:#e8f3ef;--soft:#202c2a;--shadow:0 12px 34px rgba(0,0,0,.28)}
*{box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.78}
a{color:var(--accent-2);text-decoration:none}a:hover{text-decoration:underline}
.reading-progress{position:fixed;inset:0 auto auto 0;height:3px;width:0;background:var(--accent);z-index:100;transition:width .1s linear}
.topbar{position:sticky;top:0;z-index:40;border-bottom:1px solid color-mix(in srgb,var(--line) 82%,transparent);background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(12px)}
.topbar-inner{max-width:1220px;margin:0 auto;padding:10px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-title{font-size:.9rem;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted)}
.toolbar{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.tool-button{border:1px solid var(--line);background:var(--paper);color:var(--fg);border-radius:6px;padding:5px 10px;font:inherit;font-size:.8rem;cursor:pointer}
.tool-button:hover{border-color:var(--accent);color:var(--accent)}
.layout{max-width:1220px;margin:0 auto;padding:28px 24px 72px;display:grid;grid-template-columns:238px minmax(0,1fr);gap:28px;align-items:start}
.toc{position:sticky;top:72px;max-height:calc(100vh - 94px);overflow:auto;padding:18px 16px;background:var(--paper);border:1px solid var(--line);border-radius:8px}
.toc-title{font-size:.78rem;text-transform:uppercase;font-weight:700;color:var(--muted);margin:0 0 12px}
.sidebar-section-nav{margin:0 0 4px}.sidebar-nav-title{font-size:.8rem;font-weight:780;color:var(--fg);margin:0 0 9px}
.sidebar-link{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:5px 7px;border-radius:4px;color:var(--muted);font-size:.8rem;line-height:1.45}
.sidebar-link:hover{background:var(--soft);color:var(--fg);text-decoration:none}.sidebar-link.active{background:var(--soft);color:var(--accent);font-weight:700}
.sidebar-count{font-size:.68rem;color:var(--muted);background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:0 5px;min-width:20px;text-align:center}
.sidebar-divider{border-top:1px solid var(--line);margin:12px 0 14px}
.toc-link{display:block;padding:5px 7px;border-left:2px solid transparent;color:var(--muted);font-size:.82rem;line-height:1.45;border-radius:0 4px 4px 0}
.toc-link:hover{background:var(--soft);color:var(--fg);text-decoration:none}
.toc-link.active{border-left-color:var(--accent);color:var(--accent);background:var(--soft);font-weight:650}
.toc-h3{padding-left:20px;font-size:.78rem}.toc-empty{font-size:.82rem;color:var(--muted)}
.article{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);overflow:hidden}
.hero{padding:38px 44px 30px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,color-mix(in srgb,var(--soft) 58%,var(--paper)),var(--paper))}
.eyebrow{font-size:.76rem;font-weight:750;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.hero h1{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:2.05rem;line-height:1.35;margin:0;font-weight:760}
.subtitle{font-size:1rem;color:var(--muted);line-height:1.5;margin:11px 0 0;max-width:900px}
.meta-badges,.tags,.actions{display:flex;gap:7px;flex-wrap:wrap}.meta-badges{margin-top:18px}
.badge{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--paper);color:var(--muted);border-radius:999px;padding:3px 9px;font-size:.76rem}
.badge-note-id{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--accent);background:var(--soft)}
.badge-status{border-color:color-mix(in srgb,var(--amber) 45%,var(--line));color:var(--amber)}
.badge-mixed{border-color:color-mix(in srgb,var(--accent) 40%,var(--line));color:var(--accent)}
.tag{display:inline-flex;background:var(--soft);color:var(--muted);border-radius:4px;padding:2px 7px;font-size:.74rem}
.tags{margin-top:10px}.actions{margin-top:18px}
.action-link{border:1px solid var(--line);border-radius:6px;padding:6px 11px;color:var(--fg);font-size:.82rem;font-weight:650}
.action-link:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.content{padding:8px 44px 44px;max-width:960px}
.content h2,.content h3,.content h4{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;line-height:1.42;scroll-margin-top:82px}
.content h2{font-size:1.55rem;margin:2.2em 0 .75em;padding-bottom:.45em;border-bottom:1px solid var(--line)}
.content h3{font-size:1.18rem;margin:1.8em 0 .55em;color:var(--accent)}
.content h4{font-size:1.02rem;margin:1.4em 0 .45em}
.heading-anchor{margin-left:8px;color:var(--line);font-weight:400;opacity:0;transition:opacity .15s}.content h2:hover .heading-anchor,.content h3:hover .heading-anchor,.content h4:hover .heading-anchor{opacity:1}
.content p{margin:.8em 0}.content ul,.content ol{padding-left:1.45em}.content li{margin:.32em 0}
.content blockquote{margin:1.2em 0;padding:1px 18px;border-left:3px solid var(--line);background:var(--soft);color:var(--fg)}
.callout{padding:15px 17px 14px!important;border:1px solid var(--line);border-left-width:5px!important;border-radius:6px}
.callout-title{display:flex;gap:9px;align-items:center;font-weight:750;margin:0 0 7px!important}
.callout-label{font-size:.68rem;letter-spacing:.04em;text-transform:uppercase;background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:1px 6px;color:var(--muted)}
.callout-summary,.callout-note,.callout-tip{border-left-color:var(--accent)!important}.callout-warning,.callout-caution{border-left-color:var(--amber)!important}.callout-danger{border-left-color:var(--danger)!important}
.content code{background:var(--soft);border-radius:4px;padding:.12em .34em;font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;font-size:.9em}
.content pre{background:var(--code-bg);color:var(--code-fg);padding:16px 18px;border-radius:6px;overflow:auto;line-height:1.55}.content pre code{background:none;color:inherit;padding:0}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:6px;margin:1.2em 0}
.content table{width:100%;border-collapse:collapse;min-width:640px;font-size:.9rem}
.content th,.content td{padding:9px 11px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.content th{background:var(--soft);font-weight:700}.content tr:last-child td{border-bottom:0}
.content img{display:block;max-width:100%;height:auto;margin:1.4em auto;border-radius:4px;border:1px solid var(--line);background:var(--paper)}
.content a>img{cursor:zoom-in}
.image-viewer{position:fixed;inset:0;z-index:200;display:grid;grid-template-rows:auto 1fr;background:#0b1010ee;backdrop-filter:blur(6px)}
.image-viewer[hidden]{display:none}.image-viewer-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 16px;background:#101818f2;color:#f2f7f5;border-bottom:1px solid #52605b}
.image-viewer-title{font-size:.84rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.image-viewer-actions{display:flex;gap:7px;flex-wrap:wrap}
.image-viewer-action{border:1px solid #6b7a74;background:#fff;color:#17211f;border-radius:5px;padding:4px 9px;font:inherit;font-size:.8rem;cursor:pointer;text-decoration:none}
.image-viewer-action:hover,.image-viewer-action:focus-visible{border-color:#68c8b9;outline:2px solid #68c8b9;outline-offset:1px;color:#0b5e57;text-decoration:none}
.image-viewer-stage{overflow:auto;text-align:center;padding:20px;cursor:grab}.image-viewer-stage[data-zoomed="true"]{cursor:zoom-out}.image-viewer-stage img{display:block;max-width:none!important;height:auto!important;margin:0 auto!important;border:0!important;background:#fff;border-radius:0!important}
body.image-viewer-open{overflow:hidden}
.content hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.content .task-list-item{list-style:none}.content input[type="checkbox"]{margin-right:.45em}
.doc-footer{margin-top:42px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.76rem;line-height:1.65}.doc-footer code{font-size:.72rem}
.mobile-toc{display:none;margin:18px 24px 0;padding:12px 14px;background:var(--paper);border:1px solid var(--line);border-radius:6px}.mobile-toc summary{cursor:pointer;font-weight:700}
@media(max-width:980px){.layout{grid-template-columns:1fr;padding:20px 16px 56px}.toc{display:none}.mobile-toc{display:block}.hero{padding:28px 24px 24px}.content{padding:4px 24px 32px}.topbar-inner{padding:9px 16px}.topbar-title{display:none}}
@media(max-width:620px){.hero h1{font-size:1.58rem}.subtitle{font-size:.92rem}.meta-badges,.tags,.actions{gap:5px}.content{line-height:1.72}.content h2{font-size:1.32rem}.content h3{font-size:1.08rem}}
@media(max-width:620px){.image-viewer-bar{padding:8px 10px}.image-viewer-stage{padding:10px}.image-viewer-action{padding:5px 8px}}
@media print{.reading-progress,.topbar,.toc,.mobile-toc,.toolbar,.heading-anchor,.image-viewer{display:none!important}body{background:#fff;color:#000}.layout{display:block;max-width:none;padding:0}.article{border:0;box-shadow:none}.hero{padding:0 0 18px;background:#fff}.content{padding:0;max-width:none}a{color:#000}.table-wrap{overflow:visible}.content table{min-width:0}}
[hidden]{display:none!important}
.unavailable-link{color:var(--muted);border-bottom:1px dotted currentColor;cursor:help}
.search-controls{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:10px;align-items:end;padding:22px 0 14px}.search-controls label{display:grid;gap:6px;font-size:.8rem;color:var(--muted)}.search-controls select,.search-controls button{font:inherit;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--fg);padding:10px}.search-controls button{cursor:pointer}.search-status{color:var(--muted);font-size:.85rem;margin:0 0 16px}.search-results{display:grid;gap:14px}.search-result{padding:20px;border:1px solid var(--line);border-radius:8px;background:var(--paper);min-width:0;overflow-wrap:anywhere}.search-result h2{font-size:1.13rem;margin:8px 0}.search-result h2 a{color:var(--fg)}.search-excerpt{color:var(--muted);line-height:1.7;font-size:.9rem}.search-result mark{background:var(--soft);color:var(--accent);font-weight:700}.search-result .recent-meta{font-size:.75rem;color:var(--muted)}.search-more{margin:20px auto;display:block}.global-search-link{font-size:.8rem;white-space:nowrap}.search-help{color:var(--muted);font-size:.83rem}.search-jump{display:flex;gap:10px;max-width:700px;margin-top:22px}.search-jump button{white-space:nowrap}.search-controls :focus-visible,.search-result a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:720px){.search-controls{grid-template-columns:1fr 1fr}.search-controls label:first-child{grid-column:1/-1}.search-controls button{align-self:end}.site-header-inner{flex-wrap:wrap}.search-result{padding:15px}}
.site-header{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--paper) 94%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.site-header-inner{max-width:1220px;margin:0 auto;padding:11px 24px;display:flex;align-items:center;gap:22px}
.site-brand{font-size:.95rem;font-weight:780;color:var(--fg);white-space:nowrap}.site-brand:hover{color:var(--accent);text-decoration:none}
.site-nav{display:flex;align-items:center;gap:4px;flex:1;flex-wrap:wrap}.site-nav a{font-size:.78rem;color:var(--muted);padding:6px 9px;border-radius:5px}.site-nav a:hover,.site-nav a.active{background:var(--soft);color:var(--fg);text-decoration:none}
.site-theme{border:1px solid var(--line);background:var(--paper);color:var(--fg);border-radius:6px;padding:5px 9px;font:inherit;font-size:.76rem;cursor:pointer}
.site-shell{max-width:1220px;margin:0 auto;padding:0 24px 64px}
.home-hero{padding:54px 0 34px;border-bottom:1px solid var(--line)}
.hero-kicker{font-size:.76rem;font-weight:780;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.home-hero h1{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:2.65rem;line-height:1.2;margin:0;font-weight:780}
.home-hero p{max-width:820px;color:var(--muted);font-size:1rem;margin:13px 0 0}
.home-stats{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.home-stat{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:10px 14px;min-width:108px}
.home-stat b{display:block;font-size:1.2rem}.home-stat span{font-size:.72rem;color:var(--muted)}
.home-section{padding-top:32px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:15px}
.section-heading h2{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:1.42rem;margin:0}.section-heading p{font-size:.78rem;color:var(--muted);margin:0}
.section-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.section-card{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:21px;min-height:190px;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.section-card[data-accent="teal"]{border-top:4px solid var(--accent)}.section-card[data-accent="blue"]{border-top:4px solid var(--accent-2)}.section-card[data-accent="amber"]{border-top:4px solid var(--amber)}.section-card[data-accent="slate"]{border-top:4px solid #64748b}
.section-label{font-size:.7rem;font-weight:780;text-transform:uppercase;color:var(--muted)}
.section-card h3{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:1.25rem;margin:8px 0 7px}.section-card h3 a{color:var(--fg)}.section-card h3 a:hover{color:var(--accent);text-decoration:none}
.section-card p{font-size:.84rem;line-height:1.65;color:var(--muted);margin:0 0 14px}
.section-card-meta{display:flex;gap:12px;align-items:center;margin-top:auto;font-size:.74rem;color:var(--muted)}
.section-card-meta strong{color:var(--fg)}.section-enter{margin-left:auto;font-size:.78rem;font-weight:720;color:var(--accent)}
.subsection-section{padding-top:26px}.subsection-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.subsection-card{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:16px 17px;display:flex;flex-direction:column;min-height:138px}
.subsection-card h3{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:1rem;line-height:1.45;margin:0 0 6px}.subsection-card h3 a{color:var(--fg)}.subsection-card h3 a:hover{color:var(--accent);text-decoration:none}
.subsection-card p{font-size:.77rem;line-height:1.55;color:var(--muted);margin:0 0 12px}.subsection-card-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:.71rem;color:var(--muted)}.subsection-card-meta strong{color:var(--fg)}
.subsection-hero{padding:34px 0 22px;border-bottom:1px solid var(--line)}.subsection-hero h1{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:1.9rem;margin:0}.subsection-hero p{max-width:760px;color:var(--muted);margin:9px 0 0}
.recent-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.recent-item{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:14px 15px}
.recent-item .recent-meta{font-size:.69rem;color:var(--muted);margin-bottom:7px}.recent-item h3{font-size:.9rem;line-height:1.5;margin:0 0 7px}.recent-item h3 a{color:var(--fg)}.recent-item h3 a:hover{color:var(--accent);text-decoration:none}.recent-item p{font-size:.76rem;color:var(--muted);line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.section-hero{padding:38px 0 24px;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:.76rem;color:var(--muted);margin-bottom:10px}.breadcrumbs a{color:var(--muted)}
.section-hero h1{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:2.15rem;margin:0;line-height:1.25}.section-hero p{max-width:800px;color:var(--muted);margin:10px 0 0}
.section-summary{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}.section-stat{border:1px solid var(--line);background:var(--paper);border-radius:7px;padding:8px 11px;font-size:.73rem;color:var(--muted)}.section-stat b{color:var(--fg)}
.section-controls{padding:16px 0 14px;border-bottom:1px solid var(--line)}
.section-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}
.section-sidebar{position:sticky;top:78px;padding:16px 14px;background:var(--paper);border:1px solid var(--line);border-radius:8px}
.section-sidebar .sidebar-link{padding:7px 8px;font-size:.84rem}
.section-main{min-width:0}
.section-mobile-nav{display:none;margin:18px 0 0;padding:12px 14px;background:var(--paper);border:1px solid var(--line);border-radius:6px}
.section-mobile-nav summary{cursor:pointer;font-weight:700}
.section-mobile-nav .sidebar-section-nav{margin-top:12px}
.search-input{width:100%;border:1px solid var(--line);background:var(--paper);color:var(--fg);border-radius:6px;padding:10px 12px;font:inherit;font-size:.9rem;outline:none}
.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 13%,transparent)}
.category-bar{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}.category-button{border:1px solid var(--line);background:var(--paper);color:var(--muted);border-radius:999px;padding:3px 9px;font:inherit;font-size:.73rem;cursor:pointer}.category-button.active{border-color:var(--accent);background:var(--soft);color:var(--accent)}.category-button span{opacity:.65}
.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;padding-top:20px}.kb-note-card{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:18px 19px;min-height:185px;display:flex;flex-direction:column}
.note-card-top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:8px}.note-category{font-size:.68rem;color:var(--accent);font-weight:700}.note-date{font-size:.68rem;color:var(--muted)}
.kb-note-card h2{font-family:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",Georgia,serif;font-size:1.08rem;line-height:1.45;margin:0 0 7px}.kb-note-card h2 a{color:var(--fg)}.kb-note-card h2 a:hover{color:var(--accent);text-decoration:none}
.kb-note-card .card-subtitle{font-size:.77rem;line-height:1.45;color:var(--muted);margin:0 0 7px}.kb-note-card .card-summary{font-size:.79rem;line-height:1.58;color:var(--muted);margin:0 0 11px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;gap:4px;flex-wrap:wrap;margin-top:auto}.tag-pill{background:var(--soft);color:var(--muted);border-radius:4px;padding:2px 6px;font-size:.67rem}.open-note{font-size:.76rem;font-weight:700;color:var(--accent);margin-top:10px}
.empty-state{display:none;border:1px dashed var(--line);border-radius:8px;padding:40px;text-align:center;color:var(--muted);margin-top:20px}
.site-footer{border-top:1px solid var(--line);margin-top:30px;padding:18px 0 0;font-size:.73rem;color:var(--muted);line-height:1.65}
.error-page{max-width:720px;margin:80px auto;text-align:center;padding:24px}.error-page h1{font-size:2.2rem;margin-bottom:10px}.error-page p{color:var(--muted)}
@media(max-width:980px){.section-grid{grid-template-columns:1fr}.subsection-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.recent-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.note-grid{grid-template-columns:1fr}.section-layout{grid-template-columns:1fr;gap:0}.section-sidebar{display:none}.section-mobile-nav{display:block}.site-header-inner{gap:12px}.site-brand{font-size:.86rem}.site-nav{order:3;flex-basis:100%;overflow:auto;flex-wrap:nowrap}.site-shell{padding:0 16px 52px}.home-hero h1{font-size:2.05rem}}
@media(max-width:620px){.site-header-inner{padding:9px 14px}.site-theme{margin-left:auto}.subsection-grid{grid-template-columns:1fr}.recent-grid{grid-template-columns:1fr}.home-hero{padding:34px 0 26px}.home-hero h1{font-size:1.72rem}.section-hero h1,.subsection-hero h1{font-size:1.65rem}.home-stat{min-width:90px}.kb-note-card{min-height:0}}