:root{--c-canvas: #0f1216;--c-panel: #161b22;--c-panel-raised: #1c232c;--c-panel-hover: #222b36;--c-border: #262f3b;--c-border-strong: #35404f;--c-text: #e6edf3;--c-text-muted: #8b98a8;--c-text-dim: #6b7787;--c-accent: #3b82f6;--c-accent-hover: #60a5fa;--c-accent-soft: rgba(59, 130, 246, .14);--c-danger: #f87171;--c-success: #4ade80;--c-warning: #fbbf24;--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--r-xl: 20px;--sh-sm: 0 1px 2px rgba(0, 0, 0, .32);--sh-md: 0 4px 14px rgba(0, 0, 0, .34);--sh-lg: 0 16px 48px rgba(0, 0, 0, .48);--sidebar-w: 236px;--header-h: 56px;--detail-w: 380px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}:root[data-theme=light]{--c-canvas: #f4f6fa;--c-panel: #ffffff;--c-panel-raised: #ffffff;--c-panel-hover: #eef2f8;--c-border: #e2e8f0;--c-border-strong: #cbd5e1;--c-text: #1e293b;--c-text-muted: #64748b;--c-text-dim: #94a3b8;--c-accent-soft: rgba(59, 130, 246, .1);--sh-sm: 0 1px 2px rgba(15, 23, 42, .06);--sh-md: 0 4px 14px rgba(15, 23, 42, .08);--sh-lg: 0 16px 48px rgba(15, 23, 42, .16)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--c-canvas);color:var(--c-text);font-family:var(--font);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}button{font-family:inherit;font-size:inherit;cursor:pointer}input,select{font-family:inherit;font-size:inherit}.btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border:1px solid var(--c-border);border-radius:var(--r-md);background:var(--c-panel-raised);color:var(--c-text);transition:background .15s,border-color .15s,transform 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var(--c-border);border-radius:var(--r-md)}.totp-setup{padding:12px;border:1px solid var(--c-border);border-radius:var(--r-md);background:var(--c-canvas)}.totp-secret{font-family:var(--font-mono);font-size:16px;letter-spacing:2px;text-align:center;padding:10px;background:var(--c-panel-raised);border-radius:var(--r-sm);word-break:break-all}.totp-uri{margin-top:8px;font-family:var(--font-mono);font-size:10px;color:var(--c-text-dim);word-break:break-all;max-height:54px;overflow:hidden}.totp-confirm{display:flex;gap:8px;margin-top:10px}.totp-confirm .btn{flex-shrink:0}.totp-hint{font-size:12px;color:var(--c-text-muted);margin-bottom:8px}.content.drag-over{outline:2px dashed var(--c-accent);outline-offset:-8px;border-radius:var(--r-lg)}.drop-hint{position:sticky;top:0;z-index:5;margin-bottom:10px;padding:10px 14px;border-radius:var(--r-md);background:var(--c-accent-soft);border:1px solid 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spin{to{transform:rotate(360deg)}}.login{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(1100px 520px at 12% -8%,rgba(59,130,246,.16),transparent 62%),radial-gradient(900px 480px at 92% 108%,rgba(16,185,129,.1),transparent 60%),var(--c-canvas)}.login-card{width:min(440px,100%);padding:34px 32px 30px;background:var(--c-panel);border:1px solid var(--c-border);border-radius:var(--r-xl);box-shadow:var(--sh-lg)}.login-logo{display:flex;align-items:center;gap:12px;margin-bottom:6px}.login-logo-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:var(--r-md);background:linear-gradient(135deg,var(--c-accent),#8b5cf6);color:#fff;font-size:20px}.login-title{margin:0;font-size:19px;font-weight:600}.login-sub{margin:0 0 24px;color:var(--c-text-muted);font-size:13px}.dropzone{border:1.5px dashed var(--c-border-strong);border-radius:var(--r-lg);background:var(--c-canvas);padding:30px 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var(--detail-w)}.sidebar{background:var(--c-panel);border-right:1px solid var(--c-border);display:flex;flex-direction:column;min-height:0}.sidebar-brand{height:var(--header-h);display:flex;align-items:center;gap:10px;padding:0 16px;border-bottom:1px solid var(--c-border);flex-shrink:0}.sidebar-brand-mark{width:30px;height:30px;display:grid;place-items:center;border-radius:var(--r-sm);background:linear-gradient(135deg,var(--c-accent),#8b5cf6);color:#fff;font-size:15px;flex-shrink:0}.sidebar-brand-name{font-weight:600;letter-spacing:.2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-scroll{flex:1;overflow-y:auto;padding:12px 10px 20px;min-height:0}.nav-group-title{padding:14px 10px 6px;font-size:11px;font-weight:600;letter-spacing:.6px;color:var(--c-text-dim);text-transform:uppercase}.nav-item{display:flex;align-items:center;gap:10px;height:34px;padding:0 10px;border-radius:var(--r-md);color:var(--c-text-muted);cursor:pointer;transition:background .13s,color .13s;-webkit-user-select:none;user-select:none}.nav-item:hover{background:var(--c-panel-hover);color:var(--c-text)}.nav-item.active{background:var(--c-accent-soft);color:var(--c-accent);font-weight:500}.nav-icon{width:18px;text-align:center;flex-shrink:0}.nav-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-count{margin-left:auto;font-size:11px;color:var(--c-text-dim)}.sidebar-footer{border-top:1px solid var(--c-border);padding:10px;display:flex;align-items:center;gap:8px;flex-shrink:0}.sidebar-user{flex:1;min-width:0;font-size:12px;color:var(--c-text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-node{-webkit-user-select:none;user-select:none}.tree-row{display:flex;align-items:center;gap:6px;height:30px;padding:0 8px;border-radius:var(--r-sm);color:var(--c-text-muted);cursor:pointer;font-size:13px}.tree-row:hover{background:var(--c-panel-hover);color:var(--c-text)}.tree-row.active{background:var(--c-accent-soft);color:var(--c-accent)}.tree-caret{width:14px;text-align:center;font-size:10px;color:var(--c-text-dim);flex-shrink:0}.tree-children{padding-left:14px}.main{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--c-canvas)}.header{height:var(--header-h);display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--c-panel);border-bottom:1px solid var(--c-border);flex-shrink:0}.header-path{display:flex;align-items:center;gap:4px;min-width:0;overflow:hidden;flex:1}.crumb{padding:3px 7px;border-radius:var(--r-sm);color:var(--c-text-muted);cursor:pointer;white-space:nowrap;font-size:13px}.crumb:hover{background:var(--c-panel-hover);color:var(--c-text)}.crumb.current{color:var(--c-text);font-weight:500}.crumb-sep{color:var(--c-text-dim);font-size:11px}.search-box{position:relative;width:min(300px,34vw);flex-shrink:0}.search-box .input{padding-left:32px;height:32px}.search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--c-text-dim);font-size:13px;pointer-events:none}.header-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.toolbar{height:44px;display:flex;align-items:center;gap:8px;padding:0 16px;border-bottom:1px solid var(--c-border);background:var(--c-panel);flex-shrink:0}.toolbar-spacer{flex:1}.segmented{display:inline-flex;border:1px solid var(--c-border);border-radius:var(--r-md);overflow:hidden}.segmented button{height:30px;padding:0 11px;border:none;background:transparent;color:var(--c-text-muted)}.segmented button.active{background:var(--c-accent-soft);color:var(--c-accent)}.content{flex:1;overflow-y:auto;padding:14px 16px 28px;min-height:0}.file-list{display:flex;flex-direction:column}.file-row{display:grid;grid-template-columns:1fr 120px 170px 92px;align-items:center;gap:10px;height:42px;padding:0 10px;border-radius:var(--r-md);cursor:default;transition:background .12s}.file-row:hover{background:var(--c-panel-hover)}.file-row.selected{background:var(--c-accent-soft)}.file-row.head{height:30px;color:var(--c-text-dim);font-size:12px;border-bottom:1px solid var(--c-border);border-radius:0;cursor:pointer}.file-row.head:hover{background:transparent}.file-name-cell{display:flex;align-items:center;gap:10px;min-width:0}.file-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:var(--r-sm);font-size:15px;flex-shrink:0;background:var(--c-panel-raised)}.file-icon.folder{background:#3b82f629}.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}.file-name:hover{color:var(--c-accent)}.file-meta{color:var(--c-text-muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-actions{display:flex;gap:4px;justify-content:flex-end;opacity:0;transition:opacity .12s}.file-row:hover .file-actions,.file-row.selected .file-actions{opacity:1}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:12px}.grid-card{padding:12px;border:1px solid var(--c-border);border-radius:var(--r-lg);background:var(--c-panel);cursor:pointer;transition:border-color .15s,transform .12s,box-shadow .15s}.grid-card:hover{border-color:var(--c-border-strong);transform:translateY(-2px);box-shadow:var(--sh-md)}.grid-card.selected{border-color:var(--c-accent);background:var(--c-accent-soft)}.grid-thumb{height:96px;display:grid;place-items:center;border-radius:var(--r-md);background:var(--c-panel-raised);font-size:32px;margin-bottom:10px;overflow:hidden}.grid-thumb img{width:100%;height:100%;object-fit:cover}.grid-name{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.grid-size{font-size:11px;color:var(--c-text-dim);margin-top:2px}.empty{display:grid;place-items:center;gap:10px;padding:72px 20px;text-align:center;color:var(--c-text-dim)}.empty-icon{font-size:42px;opacity:.5}.skeleton-row{height:42px;border-radius:var(--r-md);margin-bottom:6px;background:linear-gradient(90deg,var(--c-panel) 25%,var(--c-panel-raised) 37%,var(--c-panel) 63%);background-size:400% 100%;animation:shimmer 1.3s ease-in-out infinite}@keyframes shimmer{0%{background-position:100% 50%}to{background-position:0 50%}}.detail{background:var(--c-panel);border-left:1px solid var(--c-border);display:flex;flex-direction:column;min-height:0;overflow:hidden}.detail-head{height:var(--header-h);display:flex;align-items:center;gap:8px;padding:0 12px;border-bottom:1px solid var(--c-border);flex-shrink:0}.detail-title{flex:1;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.detail-body{flex:1;overflow-y:auto;min-height:0}.preview-stage{background:#05070a;display:grid;place-items:center;min-height:320px;padding:12px}.preview-stage img,.preview-stage video{max-width:100%;max-height:62vh;border-radius:var(--r-sm)}.preview-pdf{width:100%;height:62vh;border:none;background:#fff}.preview-text{padding:14px;font-family:var(--font-mono);font-size:12px;line-height:1.7;white-space:pre-wrap;word-break:break-word;color:var(--c-text)}.preview-sheet{overflow:auto;max-height:62vh}.preview-sheet table{border-collapse:collapse;width:100%;font-size:12px}.preview-sheet th,.preview-sheet td{border:1px solid var(--c-border);padding:5px 8px;text-align:left;white-space:nowrap}.preview-sheet th{background:var(--c-panel-raised);position:sticky;top:0}.preview-docx{padding:18px 16px;background:#fff;color:#1f2430;min-height:200px;overflow-x:auto}.preview-docx .docx-wrapper{background:#fff;padding:0;margin:0}.preview-docx .docx-wrapper>section.docx{margin-bottom:18px;box-shadow:0 1px 3px #0000002e}.preview-docx table{border-collapse:collapse}.preview-docx table td,.preview-docx table th{border:1px solid #d4d9e0;padding:4px 7px}.preview-outline{padding:16px}.outline-title{margin:0 0 14px;font-size:15px;font-weight:600}.outline-slide{padding:10px 12px;border:1px solid var(--c-border);border-radius:var(--r-md);margin-bottom:8px;background:var(--c-canvas)}.outline-slide-title{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:500}.outline-index{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--c-accent-soft);color:var(--c-accent);font-size:11px;flex-shrink:0}.outline-bullets{margin:8px 0 0 28px;padding:0;font-size:12px;color:var(--c-text-muted);line-height:1.8}.detail-info{padding:14px 16px;border-top:1px solid var(--c-border)}.info-row{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:12px}.info-key{color:var(--c-text-dim);flex-shrink:0}.info-val{color:var(--c-text);text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.detail-actions{display:flex;gap:8px;padding:0 16px 16px}.player-controls{display:flex;align-items:center;gap:10px;padding:8px 12px;border-top:1px solid var(--c-border);font-size:12px;color:var(--c-text-muted);flex-wrap:wrap}.download-dock{position:fixed;right:18px;bottom:18px;width:min(360px,calc(100vw - 36px));background:var(--c-panel-raised);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-lg);overflow:hidden;z-index:40}.download-dock-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--c-border);font-size:13px;font-weight:500}.download-list{max-height:260px;overflow-y:auto}.download-item{padding:9px 12px;border-bottom:1px solid var(--c-border)}.download-item:last-child{border-bottom:none}.download-row{display:flex;align-items:center;gap:8px}.download-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.download-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--c-text-dim);margin-top:4px}.progress{height:4px;border-radius:2px;background:var(--c-border);overflow:hidden;margin-top:6px}.progress-bar{height:100%;background:var(--c-accent);transition:width .25s}.toast-wrap{position:fixed;top:16px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:8px;z-index:100;pointer-events:none}.toast{padding:9px 14px;border-radius:var(--r-md);background:var(--c-panel-raised);border:1px solid var(--c-border);box-shadow:var(--sh-md);font-size:13px;animation:toast-in .2s ease}.toast.error{border-color:#f8717180;color:var(--c-danger)}.toast.success{border-color:#4ade8073;color:var(--c-success)}@keyframes toast-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.mobile-tabs{display:none}@media(max-width:900px){.app,.app.detail-open{grid-template-columns:1fr;grid-template-rows:1fr auto}.sidebar,.app.detail-open .main{display:none}.detail{grid-column:1;grid-row:1 / span 2;border-left:none}.file-row{grid-template-columns:1fr 92px}.file-row>.file-meta:nth-child(3),.file-row>.file-meta:nth-child(4){display:none}.header-path{font-size:13px}.search-box{width:40vw}.mobile-tabs{display:flex;grid-column:1;grid-row:2;border-top:1px solid var(--c-border);background:var(--c-panel);padding-bottom:env(safe-area-inset-bottom)}.mobile-tab{flex:1;height:54px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;color:var(--c-text-muted);background:none;border:none}.mobile-tab.active{color:var(--c-accent)}.download-dock{right:10px;left:10px;bottom:68px;width:auto}}