.app-shell[data-v-17ddb452]{display:flex;flex-direction:column;min-height:100vh}:root{--bg: #f5f7fa;--bg-soft: #f2f2ef;--card: #ffffff;--bar: #fbfbf9;--text: #171717;--muted: #797976;--faint: #a3a29d;--line: #e8e8e4;--accent: #171717;--accent-strong: #000000;--accent-soft: #f3f3ef;--danger: #b3412f;--on-accent: #ffffff;--bg-overlay: linear-gradient(180deg, rgba(255,255,255,.55) 0%, rgba(255,255,255,.12) 42%, rgba(255,255,255,.12) 100%);--veil-shadow: rgba(255,255,255,.85);color-scheme:light}:root[data-theme=dark]{--bg: #111113;--bg-soft: #1d1d20;--card: #17171a;--bar: #141416;--text: #f1f1ee;--muted: #9b9b97;--faint: #6b6b68;--line: #2a2a29;--accent: #f1f1ee;--accent-strong: #ffffff;--accent-soft: #242426;--danger: #d06a58;--on-accent: #111113;--bg-overlay: linear-gradient(180deg, rgba(10,10,12,.6) 0%, rgba(10,10,12,.3) 42%, rgba(10,10,12,.3) 100%);--veil-shadow: rgba(0,0,0,.85);color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg);scrollbar-gutter:stable}body{margin:0;background:transparent;color:var(--text);font:15px/1.75 -apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}#bg-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;background-size:cover;background-position:center}#bg-layer:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--bg-overlay)}#app{position:relative;z-index:1}:root[data-bg] .hero .eyebrow,:root[data-bg] .hero h1,:root[data-bg] .hero .tagline,:root[data-bg] .hero .lead,:root[data-bg] .sec-head,:root[data-bg] .group-label,:root[data-bg] .footer{text-shadow:0 1px 3px var(--veil-shadow)}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.serif{font-family:Georgia,Songti SC,STSong,SimSun,serif}h1,h2,h3,h4{font-weight:400}.wrap{width:90%;margin:0 auto}.wrap.reading{width:auto;max-width:900px;padding:0 24px}.header{position:sticky;top:0;z-index:30;background:var(--bar)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:78px;width:90%;margin:0 auto}.logo{font-family:Georgia,Songti SC,serif;font-weight:500;font-size:25px;letter-spacing:-1px;line-height:1.08}.logo small{display:block;font-family:-apple-system,sans-serif;font-size:9px;font-weight:500;letter-spacing:2.4px;color:var(--muted);margin-top:1px}.nav-links{display:flex;gap:2px}.nav-links a{color:var(--muted);font-size:13px;padding:8px 14px;border-radius:9px;transition:color .15s,background .15s}.nav-links a:hover{color:var(--text)}.nav-links a.active{color:var(--text);background:var(--accent-soft);font-weight:650}.nav-right{display:flex;align-items:center;gap:14px}.admin-link{color:var(--muted);font-size:13px;transition:color .15s}.admin-link:hover{color:var(--text)}.theme-btn{border:1px solid var(--line);background:transparent;color:var(--muted);width:32px;height:32px;border-radius:9px;cursor:pointer;font-size:14px;line-height:1;display:grid;place-items:center;transition:color .15s,border-color .15s}.theme-btn:hover{color:var(--text);border-color:var(--text)}.hero{padding:78px 0 46px;border-top:1px solid var(--line);text-align:center}.hero .eyebrow{font-size:11px;letter-spacing:.24em;color:var(--muted);font-weight:700;text-transform:uppercase;margin-bottom:22px}.hero h1{margin:0 0 16px;font-family:Georgia,Songti SC,serif;font-weight:400;font-size:clamp(44px,7vw,76px);line-height:1.02;letter-spacing:-3px}.hero h1 .dot{color:var(--muted)}.hero .tagline{margin:0;font-family:Georgia,Songti SC,serif;font-size:20px;color:var(--muted)}.hero .lead{margin:16px auto 0;color:var(--muted);font-size:14px;line-height:1.9;max-width:560px}.hero-bg{background-size:cover;background-position:center;position:relative;color:#fff;border-top:none;padding-top:130px;padding-bottom:130px}.hero-bg:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#0a0a0a8c;z-index:0}.hero-bg>.wrap{position:relative;z-index:1}.hero-bg .eyebrow{color:#ffffffb8}.hero-bg h1{color:#fff}.hero-bg h1 .dot{color:#ffffff80}.hero-bg .tagline,.hero-bg .lead{color:#ffffffd1}.sec{padding:34px 0 10px}.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px}.sec-head h2{margin:0;font-family:Georgia,Songti SC,serif;font-size:24px;letter-spacing:-.5px}.sec-head .hint{color:var(--muted);font-size:12px}.sec-head .spacer{flex:1}.card{background:var(--card);border:1px solid var(--line);padding:24px}.modules{display:grid;grid-template-columns:repeat(3,1fr);margin:36px 0 8px}.module-card{display:block;background:var(--card);border:1px solid var(--line);border-right:0;padding:26px 24px;transition:background .15s}.module-card:last-child{border-right:1px solid var(--line)}.module-card:hover{background:var(--bg-soft)}.module-card .ico{font-size:24px}.module-card h2{margin:16px 0 6px;font-family:Georgia,Songti SC,serif;font-size:21px}.module-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.8}.module-card .num{margin-top:14px;font-size:11px;color:var(--faint);letter-spacing:.04em}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:30px}.stat-tile{background:var(--card);border:1px solid var(--line);border-right:0;padding:24px 22px}.stat-tile:last-child{border-right:1px solid var(--line)}.stat-tile .num{font-family:Georgia,serif;font-size:40px;letter-spacing:-1px}.stat-tile .lbl{color:var(--muted);font-size:12px;margin-top:4px}.stat-tile .sub{color:var(--faint);font-size:11px;margin-top:4px}.series-grid{display:grid;grid-template-columns:repeat(3,1fr)}.series-card{position:relative;display:block;background:var(--card);border:1px solid var(--line);border-right:0;padding:26px 24px;transition:background .15s}.series-card:last-child{border-right:1px solid var(--line)}.series-card:hover{background:var(--bg-soft)}.series-card .emoji{font-size:26px}.series-card h3{margin:14px 0 6px;font-family:Georgia,Songti SC,serif;font-size:20px}.series-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.8;min-height:42px}.series-card .meta{display:flex;gap:18px;margin-top:16px;font-size:12px;color:var(--faint)}.series-card .meta b{color:var(--text);font-weight:600}.graph-pop{position:absolute;left:50%;top:100%;transform:translate(-50%) translateY(8px);width:244px;background:var(--card);border:1px solid var(--line);padding:12px 12px 10px;opacity:0;visibility:hidden;transition:opacity .16s,transform .16s;z-index:40;box-shadow:0 14px 40px #0000002e}.series-card:hover .graph-pop{opacity:1;visibility:visible;transform:translate(-50%) translateY(0)}.graph-pop:before{content:"";position:absolute;top:-6px;left:50%;margin-left:-6px;width:10px;height:10px;background:var(--card);border-top:1px solid var(--line);border-left:1px solid var(--line);transform:rotate(45deg)}.graph-pop .gp-cap{font-size:10px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}.graph-pop svg{display:block;width:100%;height:auto}.list{display:flex;flex-direction:column}.list-item{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-bottom:0;padding:14px 18px;transition:background .15s}.list-item:last-child{border-bottom:1px solid var(--line)}.list-item:hover{background:var(--bg-soft)}.list-item .date{color:var(--faint);font-size:12px;white-space:nowrap}.list-item .title{flex:1;font-family:Georgia,Songti SC,serif;font-size:16px}.list-item .arrow{color:var(--faint)}.tag{font-size:11px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--line);padding:1px 8px;border-radius:4px;white-space:nowrap}.tag.muted{color:var(--faint);background:transparent}.group-label{font-size:12px;color:var(--muted);letter-spacing:.06em;margin:26px 0 8px;display:flex;align-items:center;gap:10px}.group-label:first-child{margin-top:0}.task{display:flex;align-items:flex-start;gap:12px;background:var(--card);border:1px solid var(--line);border-bottom:0;padding:14px 18px;transition:background .15s}.task:last-child{border-bottom:1px solid var(--line)}.task:hover{background:var(--bg-soft)}.task-check{flex:none;width:18px;height:18px;border:1px solid var(--muted);background:transparent;cursor:pointer;margin-top:4px;transition:.15s;display:flex;align-items:center;justify-content:center;color:var(--on-accent);font-size:11px}.task-check:hover{border-color:var(--text)}.task.done .task-check{background:var(--text);border-color:var(--text)}.task .ttl{flex:1}.task.done .ttl{color:var(--faint);text-decoration:line-through}.task.cancelled .ttl{color:var(--faint)}.task-check.readonly{cursor:default}.task .meta{color:var(--faint);font-size:12px;margin-top:2px}.progress{height:6px;background:var(--bg-soft);border:1px solid var(--line);overflow:hidden}.progress-bar{height:100%;background:var(--text);transition:width .4s ease}.badge{font-size:11px;padding:1px 9px;border-radius:99px;white-space:nowrap;border:1px solid transparent;letter-spacing:.02em}.st-mastered,.st-done,.st-published{color:var(--on-accent);background:var(--text);border-color:var(--text)}.st-learning,.st-draft{color:var(--text);background:transparent;border-color:var(--text)}.st-todo,.st-offline,.st-cancelled{color:var(--muted);background:var(--bg-soft);border-color:var(--line)}.timeline{position:relative;padding-left:24px}.timeline:before{content:"";position:absolute;left:6px;top:10px;bottom:10px;width:1px;background:var(--line)}.tl-item{position:relative;padding:0 0 30px 20px}.tl-item:before{content:"";position:absolute;left:-23px;top:8px;width:7px;height:7px;border-radius:99px;background:var(--text)}.tl-date{color:var(--faint);font-size:12px;letter-spacing:.04em}.tl-card{display:block;background:var(--card);border:1px solid var(--line);padding:18px 20px;margin-top:10px;transition:background .15s}.tl-card:hover{background:var(--bg-soft)}.tl-card h3{margin:0 0 6px;font-family:Georgia,Songti SC,serif;font-size:18px}.tl-card p{margin:0;color:var(--muted);font-size:13px}.tl-card .tags{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}.article{background:var(--card);border:1px solid var(--line);padding:48px 52px}.article .art-head{margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--line)}.article .art-title{margin:0 0 14px;font-family:Georgia,Songti SC,serif;font-size:34px;line-height:1.2;letter-spacing:-1px}.article .art-meta{color:var(--faint);font-size:13px;display:flex;gap:18px;flex-wrap:wrap;align-items:center}.article h1{font-family:Georgia,Songti SC,serif;font-size:26px;margin:30px 0 14px;letter-spacing:-.5px}.article h2{font-family:Georgia,Songti SC,serif;font-size:24px;margin:38px 0 14px;letter-spacing:-.5px}.article h3{font-size:18px;margin:28px 0 10px}.article p{margin:0 0 18px}.article ul,.article ol{margin:0 0 18px;padding-left:22px}.article li{margin:4px 0}.article blockquote{margin:0 0 18px;padding:2px 18px;border-left:2px solid var(--text);color:var(--muted);background:var(--bg-soft)}.article a{color:var(--text);border-bottom:1px solid var(--muted)}.article code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;background:var(--bg-soft);border:1px solid var(--line);padding:1px 6px}.article pre{background:var(--bg-soft);border:1px solid var(--line);padding:18px;overflow-x:auto;margin:0 0 18px}.article pre code{background:none;border:none;padding:0;font-size:13px;line-height:1.7}.article-footer{margin-top:38px;padding-top:24px;border-top:1px solid var(--line);color:var(--faint);font-size:13px}.md p{margin:0 0 12px}.md p:last-child{margin-bottom:0}.md h1,.md h2,.md h3,.md h4{font-family:Georgia,Songti SC,serif;font-weight:400;margin:16px 0 8px}.md h1{font-size:22px}.md h2{font-size:19px}.md h3{font-size:16px}.md ul,.md ol{margin:0 0 12px;padding-left:20px}.md li{margin:3px 0}.md blockquote{margin:0 0 12px;padding:2px 14px;border-left:2px solid var(--text);color:var(--muted);background:var(--bg-soft)}.md code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;background:var(--bg-soft);border:1px solid var(--line);padding:0 5px}.md pre{background:var(--bg-soft);border:1px solid var(--line);padding:12px;overflow-x:auto;margin:0 0 12px}.md pre code{background:none;border:none;padding:0}.md a{color:var(--text);border-bottom:1px solid var(--muted)}.md img{max-width:100%}.graph-wrap{background:var(--card);border:1px solid var(--line)}.graph-toolbar{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}.graph-canvas{padding:20px}.graph-canvas svg{display:block;width:100%;height:auto}.node-rect{fill:var(--card);stroke:var(--line);stroke-width:1.2}.node-rect.hot{stroke:var(--text);stroke-width:1.6}.node-label{fill:var(--text);font-size:13px;font-weight:500}.edge{stroke:var(--faint);stroke-width:1.2;fill:none}.edge.related{stroke:var(--text);stroke-dasharray:4 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.15s;white-space:nowrap}.btn:hover{background:var(--accent-strong)}.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.btn.ghost:hover{border-color:var(--text);background:transparent}.btn.danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}.btn.danger:hover{background:transparent;opacity:.8}.btn.sm{padding:6px 13px;font-size:12px}.field{margin-bottom:18px}.field label{display:block;font-size:12px;color:var(--muted);letter-spacing:.04em;margin-bottom:7px}.field input,.field select,.field textarea{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--text);padding:10px 12px;font:inherit;outline:none;transition:border-color .15s}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--text)}.field textarea{resize:vertical;min-height:92px}.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}.login-card{max-width:380px;margin:0 auto}select,input[type=date],input[type=text],input[type=password]{background:var(--bg);border:1px solid var(--line);color:var(--text);padding:8px 10px;font:inherit;outline:none;border-radius:0}select:focus,input[type=date]:focus,input[type=text]:focus,input[type=password]:focus{border-color:var(--text)}.table{width:100%;border-collapse:collapse;font-size:14px}.table th{text-align:left;color:var(--faint);font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:.07em;padding:11px 16px;border-bottom:1px solid var(--line)}.table td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:middle}.table tr:last-child td{border-bottom:none}.table tbody tr:hover{background:var(--bg-soft)}.table .actions{display:flex;gap:10px;justify-content:flex-end}.link-btn{border:none;background:none;color:var(--text);cursor:pointer;font-size:13px;padding:0;font-family:inherit}.link-btn:hover{text-decoration:underline}.link-btn.danger{color:var(--danger)}.tree{font-size:14px}.tree ul{list-style:none;margin:0;padding-left:22px;border-left:1px solid var(--line)}.tree>ul{padding-left:0;border-left:none}.tree li{padding:3px 0}.tree-node{display:flex;align-items:center;gap:8px;padding:7px 10px;cursor:pointer;transition:background .12s}.tree-node:hover{background:var(--bg-soft)}.tree-node.active{background:var(--accent-soft);color:var(--text)}.tree-node .caret{color:var(--faint);width:12px;font-size:11px}.tree-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-del{flex:none;opacity:0;border:none;background:transparent;color:var(--danger);cursor:pointer;font-size:12px;line-height:1;padding:3px 6px;border-radius:4px;transition:opacity .12s,background .12s}.tree-node:hover .tree-del{opacity:1}.tree-del:hover{background:var(--accent-soft)}.admin{display:flex;min-height:100vh}.admin-side{flex:none;width:216px;border-right:1px solid var(--line);background:var(--bar);padding:24px 14px;position:sticky;top:0;height:100vh;transition:width .2s 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var(--line);color:var(--faint);font-size:11px;text-transform:uppercase;letter-spacing:.08em}.editor-pane textarea{width:100%;height:520px;border:none;background:transparent;color:var(--text);padding:18px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.7;resize:none;outline:none}.editor-pane.preview{border-left:1px solid var(--line)}.editor-pane .preview-body{padding:18px 24px;height:520px;overflow-y:auto;font-size:14.5px}.editor-pane .preview-body h1{font-family:Georgia,serif;font-size:26px;margin:4px 0 16px}.editor-pane .preview-body h2{font-family:Georgia,serif;font-size:20px;margin:24px 0 10px}.editor-pane .preview-body h3{font-size:16px;margin:20px 0 8px}.editor-pane .preview-body p{margin:0 0 12px}.editor-pane .preview-body ul,.editor-pane .preview-body ol{margin:0 0 12px;padding-left:20px}.editor-pane .preview-body code{font-family:ui-monospace,Menlo,monospace;font-size:12.5px;background:var(--bg-soft);padding:1px 5px}.editor-pane .preview-body 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