:root{--bg: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--text: #e6edf3;--text-muted: #8b949e;--border: #30363d;--primary: #7c8aff;--success: #3fb950;--warning: #d29922;--danger: #f85149;--info: #58a6ff}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow:hidden}#app{display:flex;flex-direction:column;height:100vh}.lock-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1000;transition:opacity .3s,visibility .3s}.lock-screen.hidden{opacity:0;visibility:hidden;pointer-events:none}.lock-logo{font-size:2.5rem;font-weight:700;letter-spacing:8px;color:var(--primary);margin-bottom:3rem}.lock-dots{display:flex;gap:16px;margin-bottom:2rem}.lock-dot{width:14px;height:14px;border-radius:50%;border:2px solid var(--text-muted);transition:all .15s}.lock-dot.filled{background:var(--primary);border-color:var(--primary)}.lock-dot.error{background:var(--danger);border-color:var(--danger);animation:shake .3s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.lock-keypad{display:grid;grid-template-columns:repeat(3,70px);gap:12px}.lock-key{width:70px;height:70px;border-radius:50%;border:1px solid var(--border);background:var(--bg-secondary);color:var(--text);font-size:1.5rem;cursor:pointer;transition:all .15s}.lock-key:hover:not(.empty){background:var(--bg-tertiary);border-color:var(--primary)}.lock-key:active:not(.empty){transform:scale(.95);background:var(--primary)}.lock-key.empty{visibility:hidden}.lock-key.backspace{font-size:1.2rem}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;height:56px;background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0}.topbar-left{display:flex;align-items:center}.logo{font-size:1.1rem;font-weight:700;letter-spacing:4px;color:var(--primary)}.topbar-center{display:flex;align-items:center}.view-tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:8px}.view-tab{padding:8px 16px;border:none;background:transparent;color:var(--text-muted);font-size:.8rem;font-weight:500;letter-spacing:.5px;cursor:pointer;border-radius:6px;transition:all .2s}.view-tab:hover{color:var(--text);background:var(--bg-tertiary)}.view-tab.active{background:var(--primary);color:#fff}.topbar-right{display:flex;gap:8px}.btn{padding:8px 16px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text);font-size:.85rem;cursor:pointer;border-radius:6px;transition:all .2s}.btn:hover{background:var(--bg-secondary);border-color:var(--primary)}.btn-sm{padding:6px 12px;font-size:.8rem}.refresh-btn{font-size:1.1rem}.main{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.loading{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-muted);font-size:1rem}.error-msg{display:flex;align-items:center;justify-content:center;height:100%;color:var(--danger);font-size:1rem}.tree-wrapper{flex:1;overflow:auto;padding:1.5rem}.tree-container{max-width:1200px;margin:0 auto}.tree-node{margin-left:1.25rem;position:relative}.tree-node:before{content:"";position:absolute;left:-.75rem;top:0;bottom:0;width:1px;background:var(--border)}.tree-container>.tree-node{margin-left:0}.tree-container>.tree-node:before{display:none}.node-header{display:flex;align-items:center;gap:6px;padding:4px 8px;border-radius:6px;cursor:pointer;transition:background .15s;min-height:32px}.node-header:hover{background:var(--bg-secondary)}.node-header.root-node{padding:8px 12px;margin-bottom:8px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px}.node-header.root-node .node-text{font-size:1.1rem;font-weight:600;color:var(--primary)}.toggle-icon{width:16px;font-size:.65rem;color:var(--text-muted);flex-shrink:0;text-align:center;-webkit-user-select:none;user-select:none;transition:color .15s}.node-header:hover .toggle-icon{color:var(--text)}.toggle-spacer{width:16px;flex-shrink:0}.node-checkbox{font-size:.9rem;flex-shrink:0;color:var(--text-muted)}.node-checkbox.checked{color:var(--success)}.node-checkbox.progress{font-size:.7rem;color:var(--warning);font-weight:500}.node-icon{font-size:.85rem;flex-shrink:0}.node-image{max-height:80px;max-width:120px;border-radius:4px;object-fit:contain;flex-shrink:0;border:1px solid var(--border)}.node-text{font-size:.9rem;color:var(--text);white-space:pre-wrap;word-break:break-word;line-height:1.4}.node-text.done{text-decoration:line-through;color:var(--text-muted)}.node-link{font-size:.75rem;text-decoration:none;flex-shrink:0;opacity:.6;transition:opacity .15s}.node-link:hover{opacity:1}.node-note-btn{font-size:.75rem;cursor:pointer;flex-shrink:0;opacity:.5;transition:opacity .15s}.node-note-btn:hover{opacity:1}.node-note{margin:4px 0 4px 22px;padding:8px 12px;background:var(--bg-tertiary);border-left:3px solid var(--primary);border-radius:0 6px 6px 0;font-size:.8rem;color:var(--text-muted);white-space:pre-wrap;line-height:1.5}.node-note.hidden{display:none}.node-children{overflow:hidden;transition:max-height .25s ease,opacity .2s ease;max-height:100000px;opacity:1}.node-children.collapsed{max-height:0;opacity:0}@media (max-width: 768px){.topbar{flex-wrap:wrap;height:auto;padding:.75rem;gap:.5rem}.view-tabs{order:3;width:100%;justify-content:center;flex-wrap:wrap}.view-tab{padding:6px 10px;font-size:.7rem}.tree-wrapper{padding:.75rem}.tree-node{margin-left:.75rem}.node-image{max-height:60px;max-width:80px}}