:root{--bg: #ffffff;--fg: #1f2328;--muted: #57606a;--border: #d0d7de;--surface: #f6f8fa;--accent: #2563eb;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;color:var(--fg);background:var(--surface)}.topbar{position:relative;display:flex;align-items:center;gap:16px;padding:10px 16px;background:var(--bg);border-bottom:1px solid var(--border)}.progress{position:absolute;left:0;right:0;bottom:-1px;height:3px;background:transparent;opacity:0;transition:opacity .2s ease}.progress.active{opacity:1}.progress-bar{height:100%;width:0;background:var(--accent);transition:width .15s ease}.brand{font-weight:700;font-size:16px}.doc-source{font-size:12px;padding:2px 9px;border-radius:10px;border:1px solid transparent;white-space:nowrap;cursor:default}.doc-source.kind-disk{color:#15803d;background:#f0fdf4;border-color:#bbf7d0}.doc-source.kind-snapshot{color:#b45309;background:#fffbeb;border-color:#fde68a}.doc-source.kind-default{color:var(--muted);background:var(--surface);border-color:var(--border)}.actions{display:flex;align-items:center;gap:8px;margin-left:auto}button{border:1px solid var(--border);background:var(--surface);color:var(--fg);padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px}button:hover{border-color:var(--accent);color:var(--accent)}.status{font-size:12px;color:var(--muted);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status.error{color:#c0392b}.whoami{font-size:12px;color:var(--muted);white-space:nowrap}.auth-gate{position:fixed;inset:0;z-index:80;background:var(--surface);display:flex;align-items:center;justify-content:center}.auth-gate[hidden]{display:none}.auth-card{width:360px;max-width:92vw;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:28px 24px;box-shadow:0 12px 40px #00000014}.auth-card h1{margin:0 0 8px;font-size:20px}.auth-hint{min-height:1.2em;color:#c0392b;font-size:13px;margin:0 0 12px}.auth-sub{margin:12px 0 0;font-size:13px;color:var(--muted)}.auth-card form{display:flex;flex-direction:column;gap:10px}.auth-card label,.settings-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.auth-card input,.settings-form input,.settings-form select{padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px}button.linkish{border:0;background:none;color:var(--accent);padding:0}.settings-drawer{width:400px}.settings-form{padding:16px;overflow:auto;display:flex;flex-direction:column;gap:10px}.settings-form h3{margin:8px 0 0;font-size:14px}.settings-hint{font-size:12px;color:var(--muted);margin:0}.settings-form .chk{flex-direction:row;align-items:center;gap:8px}.settings-ops{display:flex;gap:8px}.layout{display:grid;grid-template-columns:240px 1fr 1fr;height:calc(100% - 53px)}.pane{overflow:auto;height:100%}.sidebar{display:flex;flex-direction:column;background:var(--bg);border-right:1px solid var(--border);overflow:hidden}.sidebar-head{display:flex;gap:6px;padding:10px;border-bottom:1px solid var(--border)}.sidebar-head input{flex:1;min-width:0;padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px}.sidebar-tree{flex:1;overflow:auto;padding:6px}.sidebar-tree .tree-root,.tree-children{list-style:none;margin:0;padding:0}.tree-children{margin-left:14px}.tree-empty{color:var(--muted);font-size:13px;padding:16px;text-align:center}.tree-folder-label{display:flex;align-items:center;gap:4px;padding:5px 8px;border-radius:6px;font-size:13px;font-weight:600;cursor:pointer;-webkit-user-select:none;user-select:none}.tree-folder-label:hover{background:var(--surface)}.tree-caret{display:inline-block;width:12px;transition:transform .15s ease;color:var(--muted)}.tree-folder:not(.open)>.tree-caret,.tree-folder:not(.open)>.tree-folder-label .tree-caret{transform:rotate(-90deg)}.tree-folder:not(.open)>.tree-children{display:none}.tree-doc{display:flex;align-items:center;gap:4px;padding:4px 8px;border-radius:6px;cursor:pointer}.tree-doc:hover{background:var(--surface)}.tree-doc.current{background:var(--accent);color:#fff}.tree-doc.current .tree-label{color:#fff}.tree-label{flex:1;min-width:0;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-ops{display:none;gap:2px}.tree-doc:hover .tree-ops{display:flex}.tree-op{border:0;background:none;padding:2px 4px;font-size:12px;line-height:1;cursor:pointer;opacity:.7}.tree-op:hover{opacity:1;color:var(--accent)}.tree-doc.current .tree-op:hover{color:#fff}.editor-pane{border-right:1px solid var(--border)}#editor{width:100%;height:100%;border:0;resize:none;padding:16px;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:13px;line-height:1.6;outline:none;background:var(--bg);color:var(--fg)}.preview-pane{background:var(--bg);padding:16px 24px}.markdown-body{line-height:1.7;font-size:15px}.markdown-body h1,.markdown-body h2,.markdown-body h3{line-height:1.3;margin-top:1.4em}.markdown-body h1{border-bottom:1px solid var(--border);padding-bottom:.3em}.markdown-body code{background:var(--surface);padding:.15em .4em;border-radius:4px;font-size:.9em}.markdown-body pre{background:var(--surface);padding:12px 14px;border-radius:8px;overflow:auto}.markdown-body pre code{background:none;padding:0}.markdown-body blockquote{margin:1em 0;padding:0 1em;color:var(--muted);border-left:4px solid var(--border)}.markdown-body table{border-collapse:collapse;width:100%}.markdown-body th,.markdown-body td{border:1px solid var(--border);padding:6px 10px}.markdown-body img{max-width:100%}.mermaid-render{display:flex;justify-content:center;margin:1em 0}.mermaid-render svg{max-width:100%;height:auto}.mermaid-error{color:#c0392b;background:#fdecea;border:1px solid #f5c6cb;padding:8px 12px;border-radius:6px;font-size:13px}.toc-panel{position:fixed;top:0;right:0;width:260px;height:100%;background:var(--bg);border-left:1px solid var(--border);box-shadow:-8px 0 24px #00000014;transform:translate(100%);transition:transform .2s ease;z-index:20;display:flex;flex-direction:column}.toc-panel.open{transform:translate(0)}body.toc-on .preview-pane{padding-right:276px}.toc-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border);font-weight:600;font-size:14px}.toc-body{flex:1;overflow:auto;padding:8px 6px}.toc-body ul{list-style:none;margin:0;padding:0}.toc-body .toc-empty{color:var(--muted);font-size:13px;padding:12px;text-align:center}.toc-item a{display:block;padding:5px 10px;border-radius:6px;color:var(--fg);text-decoration:none;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-item a:hover{background:var(--surface)}.toc-item.active a{background:var(--accent);color:#fff}.toc-item.l2 a{padding-left:22px}.toc-item.l3 a{padding-left:34px}.drawer{position:fixed;top:0;right:0;width:340px;max-width:90vw;height:100%;background:var(--bg);border-left:1px solid var(--border);box-shadow:-8px 0 24px #00000014;transform:translate(100%);transition:transform .2s ease;z-index:20;display:flex;flex-direction:column}.drawer.open{transform:translate(0)}.drawer-head{display:flex;gap:8px;padding:12px;border-bottom:1px solid var(--border)}.drawer-head input{flex:1;padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px}.history-list{list-style:none;margin:0;padding:8px;overflow:auto}.history-item{padding:10px 12px;border-radius:8px;cursor:pointer}.history-item:hover{background:var(--surface)}.history-item.active{background:var(--accent);color:#fff}.history-item.active .hi-meta{color:#ffffffd9}.hi-title{font-weight:600;font-size:14px}.hi-meta{font-size:12px;color:var(--muted);margin-top:2px}.history-list .empty{color:var(--muted);font-size:13px;padding:16px;text-align:center}.modal-backdrop{position:fixed;inset:0;background:#0006;display:none;align-items:center;justify-content:center;z-index:30}.modal-backdrop.open{display:flex}.modal{width:720px;max-width:92vw;max-height:86vh;background:var(--bg);border-radius:12px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 16px 48px #0000003d}.modal-head,.modal-foot{display:flex;align-items:center;gap:8px;padding:12px 16px}.modal-head{justify-content:space-between;border-bottom:1px solid var(--border);font-weight:600}.modal-foot{justify-content:flex-end;border-top:1px solid var(--border)}#share-text,#md-view-text{flex:1;min-height:320px;border:0;padding:16px;resize:none;font-family:SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.6;outline:none}#share{position:relative}.share-badge{position:absolute;top:-7px;right:-7px;min-width:17px;height:17px;line-height:17px;padding:0 4px;border-radius:9px;background:#dc2626;color:#fff;font-size:11px;font-weight:600;text-align:center;box-shadow:0 0 0 2px var(--bg);cursor:pointer;box-sizing:border-box}.pd-body{padding:12px 16px;overflow:auto;max-height:60vh;font-size:13px;line-height:1.7}.pd-body ul{margin:6px 0 0;padding-left:20px}.pd-body li.modified{color:#b45309}.pd-body li.added{color:#15803d}.pd-body li.removed{color:#b91c1c}.drawer-title{font-weight:600;font-size:14px;white-space:nowrap}.snapshot-item{padding:10px 12px;border-radius:8px;border-bottom:1px solid var(--border)}.snapshot-item:hover{background:var(--surface)}.snap-label{font-weight:600;font-size:14px}.snap-ops{display:flex;gap:6px;margin-top:6px}.snap-ops button{padding:2px 8px;font-size:12px}#snap-preview-text{flex:1;min-height:300px;border:0;padding:16px;resize:none;font-family:SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.6;outline:none}.media-drawer{width:420px;max-width:92vw}.media-drawer .drawer-head select{border:1px solid var(--border);border-radius:6px;font-size:13px;padding:6px 8px;background:var(--bg);color:var(--fg)}.media-grid{flex:1;overflow:auto;padding:10px;display:flex;flex-direction:column;gap:8px}.media-empty{color:var(--muted);font-size:13px;padding:24px 16px;text-align:center}.media-item{display:flex;align-items:center;gap:10px;padding:8px;border:1px solid var(--border);border-radius:8px}.media-item img{width:56px;height:56px;object-fit:cover;border-radius:6px;border:1px solid var(--border);background:var(--surface)}.media-meta{flex:1;min-width:0}.media-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.media-sub{font-size:12px;color:var(--muted);margin-top:2px}.media-ops{display:flex;gap:4px}.media-ops button{padding:3px 8px;font-size:12px}.share-row-ops{display:flex;gap:4px;margin-top:6px}.share-row-ops button{padding:3px 8px;font-size:12px}