:root{--bg:#070a13;--panel:#0d1220;--panel2:#111827;--line:rgba(160,180,215,.14);--text:#edf2ff;--muted:#8f9bb2;--accent:#7dd3fc;--gold:#ffd76a;--purple:#a78bfa;--green:#67e8b4;--header:68px;--serif:"Noto Serif SC","Songti SC",serif;--sans:Inter,"Microsoft YaHei",system-ui,sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;width:100%;height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);font-family:var(--sans)}button,input{font:inherit}.hidden{display:none!important}.topbar{height:var(--header);position:fixed;inset:0 0 auto;z-index:40;display:grid;grid-template-columns:260px minmax(280px,620px) 260px;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid var(--line);background:rgba(7,10,19,.82);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:11px;color:var(--text);border:0;background:none;text-align:left;cursor:pointer}.brand-mark{width:38px;height:38px;border:1px solid rgba(255,215,106,.4);border-radius:50%;display:grid;place-items:center;color:var(--gold);box-shadow:0 0 22px rgba(255,215,106,.18)}.brand strong,.brand small{display:block}.brand strong{font-family:var(--serif);letter-spacing:.08em}.brand small{font-size:10px;color:var(--muted);letter-spacing:.28em;margin-top:2px}.search-wrap{position:relative}.search-wrap input{width:100%;height:40px;padding:0 68px 0 40px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.05);color:var(--text);outline:none}.search-wrap input:focus{border-color:rgba(125,211,252,.5);box-shadow:0 0 0 3px rgba(125,211,252,.08)}.search-icon{position:absolute;left:15px;top:7px;color:var(--muted);font-size:22px}.search-wrap kbd{position:absolute;right:12px;top:10px;font-size:10px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:3px 6px}.search-results{position:absolute;top:48px;left:0;right:0;max-height:62vh;overflow:auto;padding:7px;background:#111827;border:1px solid var(--line);border-radius:12px;box-shadow:0 20px 60px #0009}.search-item{width:100%;border:0;background:none;color:var(--text);display:block;text-align:left;padding:10px 12px;border-radius:8px;cursor:pointer}.search-item:hover,.search-item.active{background:rgba(125,211,252,.09)}.search-item b,.search-item small{display:block}.search-item small{color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mode-switch{justify-self:end;display:flex;padding:3px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px}.mode-switch button{border:0;background:none;color:var(--muted);padding:8px 14px;border-radius:7px;cursor:pointer}.mode-switch button.active{background:#1d2940;color:#fff;box-shadow:0 3px 12px #0006}.nebula-view,.list-view{position:absolute;inset:var(--header) 0 0}.nebula-view{overflow:hidden;background:radial-gradient(circle at 50% 45%,#17213d 0,#080b16 42%,#05070d 100%)}#spaceCanvas{width:100%;height:100%;display:block;cursor:grab}#spaceCanvas.dragging{cursor:grabbing}.hero-copy{position:absolute;left:7%;top:8%;pointer-events:none;text-shadow:0 4px 30px #02030a}.eyebrow{color:#91a2c5;font-size:10px;letter-spacing:.34em}.hero-copy h1{font-family:var(--serif);font-size:clamp(38px,5vw,72px);line-height:1.18;font-weight:400;margin:15px 0}.hero-copy h1 em{color:var(--gold);font-style:normal}.hero-copy>p:last-child{font-size:12px;color:var(--muted);letter-spacing:.1em}.glass{background:rgba(13,18,32,.66);border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:0 14px 40px #0005}.legend-panel{position:absolute;right:24px;top:24px;padding:14px 18px;border-radius:13px;display:flex;gap:24px}.legend-panel>div{display:flex;align-items:center;gap:9px}.legend-panel i{display:block;border-radius:50%}.legend-star{width:13px;height:13px;background:var(--gold);box-shadow:0 0 13px var(--gold)}.legend-planet{width:10px;height:10px;background:var(--purple);box-shadow:0 0 9px var(--purple)}.legend-moon{width:6px;height:6px;background:#cbd5e1}.legend-panel b,.legend-panel small{display:block}.legend-panel b{font-size:11px}.legend-panel small{font-size:9px;color:var(--muted);margin-top:2px}.stats{position:absolute;left:24px;bottom:24px;display:flex;border-radius:12px;overflow:hidden}.stats span{padding:11px 16px;font-size:10px;color:var(--muted);border-right:1px solid var(--line)}.stats span:last-child{border:0}.stats b{color:var(--text);font-size:14px;margin-right:3px}.canvas-tools{position:absolute;right:24px;bottom:24px;border-radius:10px;overflow:hidden;display:flex}.canvas-tools button{width:38px;height:38px;border:0;border-right:1px solid var(--line);background:none;color:var(--text);cursor:pointer}.canvas-tools button:hover{background:rgba(255,255,255,.08)}.hover-card{position:absolute;z-index:6;pointer-events:none;max-width:260px;background:#111827ee;border:1px solid var(--line);border-radius:9px;padding:9px 11px;box-shadow:0 10px 35px #0008}.hover-card b,.hover-card small{display:block}.hover-card small{color:var(--muted);margin-top:4px}.list-view{display:grid;grid-template-columns:282px minmax(0,1fr) 220px;background:#090d17}.file-panel,.toc-panel{min-height:0;overflow:auto;background:#0b101c}.file-panel{border-right:1px solid var(--line)}.toc-panel{border-left:1px solid var(--line);padding:0 16px}.panel-title{position:sticky;top:0;z-index:2;height:50px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:#0b101cee;border-bottom:1px solid var(--line);font-size:11px;letter-spacing:.1em;color:#b8c2d8}.panel-title button{border:0;background:none;color:var(--muted);cursor:pointer}.file-tree{padding:8px}.tree-folder>summary{list-style:none;cursor:pointer;color:#aab6ce;padding:7px 8px;border-radius:7px;font-size:12px}.tree-folder>summary:before{content:'›';display:inline-block;width:15px;transition:.2s}.tree-folder[open]>summary:before{transform:rotate(90deg)}.tree-children{padding-left:10px}.tree-note{width:100%;border:0;background:none;color:#8996af;text-align:left;padding:7px 8px 7px 23px;border-radius:7px;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;position:relative}.tree-note:before{content:'◇';position:absolute;left:7px;color:#5f708f}.tree-note:hover,.tree-note.active{background:#172033;color:#fff}.tree-note.active:before{color:var(--gold)}.reader-shell{overflow:auto;scroll-behavior:smooth;background:linear-gradient(90deg,#0b0f19,#0d121e 50%,#0b0f19)}.reader-empty{height:100%;display:grid;place-content:center;text-align:center;color:var(--muted)}.reader-empty span{font-size:42px;color:#44516d}.reader-empty h2{font-family:var(--serif);font-weight:400;color:#dce5f7}.reader{max-width:920px;margin:auto;padding:52px 62px 120px}.reader-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:30px}.reader-head p{margin:0 0 9px;color:#6f7d96;font-size:11px}.reader-head h1{margin:0;font:400 34px/1.3 var(--serif);color:#fff}.reader-head button{flex:none;border:1px solid var(--line);background:#131b2b;color:#aab6ce;border-radius:8px;padding:8px 12px;cursor:pointer}.reader-head button:hover{color:#fff;border-color:#4a5d80}.markdown-body{color:#c7d0e1;font-size:15px;line-height:1.85;word-break:break-word}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{font-family:var(--serif);font-weight:500;color:#f4f7ff;scroll-margin-top:24px}.markdown-body h1{font-size:30px;margin:1.8em 0 .7em}.markdown-body h2{font-size:23px;margin:1.7em 0 .65em;padding-bottom:8px;border-bottom:1px solid var(--line)}.markdown-body h3{font-size:18px;color:#e1e8f6;margin:1.5em 0 .5em}.markdown-body a{color:#7dd3fc;text-decoration:none;border-bottom:1px solid rgba(125,211,252,.25);cursor:pointer}.markdown-body a:hover{color:#bae6fd}.markdown-body img{display:block;max-width:100%;height:auto;margin:20px auto;border-radius:8px}.markdown-body blockquote{margin:18px 0;padding:7px 18px;border-left:3px solid #5c75a5;background:#111827;color:#9eabc2}.markdown-body code{font-family:Consolas,monospace;font-size:.9em;background:#161f30;color:#b9e6ff;padding:.15em .4em;border-radius:4px}.markdown-body pre{overflow:auto;padding:18px;background:#080c14;border:1px solid var(--line);border-radius:9px}.markdown-body pre code{padding:0;background:none}.markdown-body table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;margin:20px 0;font-size:13px}.markdown-body th,.markdown-body td{border:1px solid #263147;padding:8px 10px;text-align:left;vertical-align:top}.markdown-body th{background:#141d2e;color:#e4ebf8}.markdown-body tr:nth-child(even){background:rgba(255,255,255,.018)}.markdown-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}.markdown-body ruby rt{color:#8da0c0;font-size:.58em}.markdown-body .tag{display:inline-block;border:1px solid #33415c;color:#91a8ce;border-radius:10px;padding:0 7px;font-size:11px}.toc-panel nav{padding:12px 0 40px}.toc-panel a{display:block;color:#77869f;font-size:11px;line-height:1.4;padding:6px 5px;border-left:1px solid #27334a;text-decoration:none}.toc-panel a:hover{color:#d9e2f1;border-color:#7dd3fc}.toc-panel a.level-3{padding-left:17px}.note-modal{position:fixed;inset:var(--header) 0 0;z-index:30}.modal-backdrop{position:absolute;inset:0;background:rgba(2,4,10,.73);backdrop-filter:blur(5px)}.modal-card{position:absolute;right:2.5%;top:3%;bottom:3%;width:min(820px,92%);overflow:auto;background:#0d121e;border:1px solid #29344a;border-radius:15px;padding:42px 54px 80px;box-shadow:0 30px 100px #000}.modal-close{position:sticky;z-index:2;float:right;top:0;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;background:#131b2b;color:#fff;font-size:22px;cursor:pointer}@media(max-width:900px){.topbar{grid-template-columns:auto 1fr auto;padding:0 10px;gap:10px}.brand span:last-child{display:none}.search-wrap kbd{display:none}.search-wrap input{padding-right:12px}.mode-switch button{font-size:0;padding:9px 11px}.mode-switch button span{font-size:16px}.list-view{grid-template-columns:220px minmax(0,1fr)}.toc-panel{display:none}.reader{padding:35px 30px 100px}.hero-copy{top:6%;left:5%}.legend-panel{display:none}}@media(max-width:600px){.file-panel{position:absolute;z-index:5;left:0;top:0;bottom:0;width:78%;transform:translateX(-100%)}.list-view{grid-template-columns:1fr}.reader{padding:28px 20px 90px}.hero-copy h1{font-size:36px}.stats span{padding:9px}.stats span:nth-child(2){display:none}.modal-card{inset:1.5%;width:auto;padding:28px 20px 60px}}
.note-mindmap{max-width:100%;min-width:0;margin:20px 0;border:1px solid #d7dce2;border-radius:12px;overflow:hidden;background:#fff;color:#666}
.mind-tools{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:12px;background:#f3f5f7;color:#48505b;font:14px/1.5 system-ui}
.mind-tools button{padding:7px 12px;min-height:40px;border:1px solid #ced5de;border-radius:6px;background:white;color:#344355;cursor:pointer}.mind-tools span{font-size:12px;color:#657180}
.mind-viewport{overflow:auto;max-width:100%;max-height:75vh;padding:32px 20px;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.mind-tree,.mind-tree ul{list-style:none!important;margin:0!important;padding:0!important;display:flex;flex-direction:column;flex-shrink:0}
.mind-tree{width:max-content;min-width:0;font:20px/1.8 system-ui;color:#666;--branch:#78b99f}
.mind-node{display:flex;align-items:center;margin:0!important;padding:0!important;position:relative}
.mind-label{flex-shrink:0;max-width:650px;width:max-content;padding:12px 16px;border-bottom:3px solid var(--branch);overflow-wrap:anywhere;font-weight:400}
.mind-tree>.mind-node>.mind-label{background:#5ca5f2;color:#fff;border:0;border-radius:6px;font-size:32px;padding:16px 24px}
.mind-tree ul{margin-left:46px!important;gap:24px}
.mind-branch{position:relative;padding:12px 0}
.mind-branch:before{content:'';position:absolute;left:-46px;top:50%;width:46px;border-top:3px solid var(--branch)}
.mind-tree ul{position:relative;border-left:3px solid var(--branch);padding-left:0!important}
.mind-label ruby{ruby-position:over}.mind-label rt{font-size:.48em;color:#777}.mind-label p{font:inherit;margin:4px 0}.mind-label strong{color:var(--gold,#ffd76a);font-weight:700}.mind-label a{color:#326995}
@media(max-width:600px){.mind-viewport{padding:20px 12px;max-height:70vh}.mind-tools{gap:6px}.mind-tools button{padding:8px;min-height:44px}.mind-tree{font-size:18px}.mind-label{max-width:520px}.mind-tree ul{gap:16px}}
.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n+1){--branch:#70cfa0}.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n+2){--branch:#dcc04b}.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n+3){--branch:#65b8c0}.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n+4){--branch:#67a753}.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n+5){--branch:#b38bd2}.mind-tree>.mind-node>ul>.mind-branch:nth-child(6n){--branch:#e49b75}
.mind-tree ul:has(>.mind-branch:only-child){border-left:0}.mind-branch:only-child:before{width:49px;left:-49px}
/* Transparent reading surface with measured, curved branch connections. */
.note-mindmap{background:transparent;color:var(--text);border-color:rgba(160,180,215,.12)}
.mind-tools{background:rgba(15,24,39,.65);color:#e8dfc4;border-bottom:1px solid var(--line)}
.mind-tools button{background:#131d2b;color:#dac58e;border-color:#354153}.mind-tools button:hover{background:#202c3d;border-color:#bba46b}.mind-tools span{color:#91a1b8}
.mind-tree{position:relative;color:#d8dfeb}.mind-tree ul{border:0!important;margin-left:76px!important;gap:32px}
.mind-branch:before{display:none}.mind-label{position:relative;z-index:1;border-bottom:0;padding:14px 12px}
.mind-tree>.mind-node>.mind-label{background:#16283b;border:1px solid #526f8c;border-radius:14px;color:var(--gold,#ffd76a);font-size:30px;font-weight:700}
.mind-curves{position:absolute;inset:0;overflow:visible;pointer-events:none;z-index:0}
.mind-curves path{fill:none;stroke-width:2.2;stroke-linecap:round;opacity:.8}
.mind-label a{color:#9cccf5}.markdown-body .mind-label ruby rt{color:#9cafcf}
@media(max-width:600px){.mind-tree ul{margin-left:52px!important;gap:26px}}