:root{--bg: #f5f6f8;--panel: #ffffff;--border: #e2e5ea;--text: #24292f;--text-muted: #6b7280;--primary: #2563eb;--primary-dark: #1d4ed8;--danger: #dc2626;--hover: #eef2f7;--sidebar-w: 280px;--topbar-h: 52px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;color:var(--text);background:var(--bg)}#app{height:100%}button{font-family:inherit;cursor:pointer}.file-hidden{display:none}.login-view{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a,#2563eb 60%,#3b82f6);z-index:100}.login-card{background:var(--panel);border-radius:12px;padding:36px 32px;width:min(360px,90vw);box-shadow:0 20px 50px #0000004d;text-align:center}.login-logo{font-size:42px;margin-bottom:8px}.login-card h1{font-size:19px;margin-bottom:22px;font-weight:600}.login-card input{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;transition:border-color .15s}.login-card input:focus{border-color:var(--primary)}.login-card button{width:100%;margin-top:14px;padding:11px;border:none;border-radius:8px;background:var(--primary);color:#fff;font-size:15px;font-weight:600}.login-card button:hover{background:var(--primary-dark)}.login-card button:disabled{opacity:.6;cursor:default}.login-error{color:var(--danger);font-size:13px;min-height:20px;margin-top:10px}.app-view{display:flex;flex-direction:column;height:100vh;height:100dvh}.topbar{height:var(--topbar-h);flex:none;display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--panel);border-bottom:1px solid var(--border);z-index:20}.title-wrap{display:flex;align-items:baseline;gap:10px;overflow:hidden;flex:1;min-width:0}.app-name{font-weight:700;white-space:nowrap}.doc-title{color:var(--text-muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.doc-title.dirty:after{content:" ●";color:#f59e0b}.topbar-actions{display:flex;gap:8px;flex:none}.top-btn{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:7px;padding:7px 12px;font-size:13px;white-space:nowrap}.top-btn:hover{background:var(--hover)}.top-btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.top-btn.primary:hover{background:var(--primary-dark)}.top-btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.icon-btn{border:none;background:transparent;border-radius:7px;padding:7px 9px;font-size:15px;line-height:1;color:var(--text)}.icon-btn:hover{background:var(--hover)}.menu-btn{display:none;font-size:18px}.layout{flex:1;display:flex;min-height:0;position:relative}.sidebar{width:var(--sidebar-w);flex:none;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.search-row{display:flex;gap:6px;padding:10px;border-bottom:1px solid var(--border)}.search-row input{flex:1;min-width:0;padding:7px 10px;border:1px solid var(--border);border-radius:7px;font-size:13px;outline:none}.search-row input:focus{border-color:var(--primary)}.tree-panel{flex:1;display:flex;flex-direction:column;min-height:0}.tree-actions{display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--border)}.mini-btn{border:1px solid var(--border);background:var(--panel);border-radius:6px;padding:4px 8px;font-size:12px;color:var(--text)}.mini-btn:hover{background:var(--hover)}.tree-container{flex:1;overflow-y:auto;padding:6px 4px 20px}.tree-item{-webkit-user-select:none;user-select:none}.tree-row{display:flex;align-items:center;gap:4px;padding:5px 6px;border-radius:6px;cursor:pointer;white-space:nowrap}.tree-row:hover{background:var(--hover)}.tree-row.active{background:#dbeafe;color:var(--primary-dark);font-weight:600}.tree-caret{width:18px;flex:none;text-align:center;font-size:10px;color:var(--text-muted);transition:transform .15s}.tree-caret.open{transform:rotate(90deg)}.tree-icon{flex:none;width:20px;text-align:center}.tree-name{flex:1;overflow:hidden;text-overflow:ellipsis;font-size:14px}.tree-ops{display:flex;gap:2px;flex:none;opacity:0}.tree-row:hover .tree-ops,.tree-row:focus-within .tree-ops{opacity:1}.tree-op{border:none;background:transparent;border-radius:4px;font-size:12px;padding:3px 5px;color:var(--text-muted)}.tree-op:hover{background:#d1d5db;color:var(--text)}.tree-op.danger:hover{color:var(--danger)}.tree-children{margin-left:14px}.tree-empty{color:var(--text-muted);font-size:13px;padding:16px 12px;text-align:center}.search-results{flex:1;display:flex;flex-direction:column;min-height:0}.search-results-head{display:flex;align-items:center;justify-content:space-between;padding:10px;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-muted)}.search-list{flex:1;overflow-y:auto;padding:6px}.search-hit{padding:8px 10px;border-radius:6px;cursor:pointer}.search-hit:hover{background:var(--hover)}.search-hit-path{font-size:13px;font-weight:600;margin-bottom:3px;word-break:break-all}.search-hit-snippet{font-size:12px;color:var(--text-muted);word-break:break-all;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.main-area{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;position:relative}.editor{flex:1;min-height:0}.editor .vditor{height:100%;border-radius:0}.local-preview{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--bg);display:flex;flex-direction:column;z-index:15}.lp-bar{flex:none;display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--panel);border-bottom:1px solid var(--border);flex-wrap:wrap}.lp-title{font-weight:600;font-size:14px;word-break:break-all}.lp-tip{color:var(--text-muted);font-size:12px}.lp-actions{margin-left:auto;display:flex;gap:8px}.lp-content{flex:1;overflow-y:auto;padding:20px max(16px,calc((100% - 820px)/2)) 60px;background:var(--panel);margin:14px;border-radius:10px;border:1px solid var(--border)}.drop-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1e3a8a73;display:flex;align-items:center;justify-content:center;z-index:90}.drop-box{background:#fff;border-radius:12px;padding:28px 40px;font-size:17px;font-weight:600;box-shadow:0 16px 40px #00000040}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:80;padding:16px}.modal-card{background:var(--panel);border-radius:10px;padding:20px;width:min(420px,92vw);box-shadow:0 16px 40px #00000040}.modal-title{font-size:15px;font-weight:600;margin-bottom:12px}.modal-message{font-size:14px;color:var(--text-muted);margin-bottom:12px;word-break:break-all;white-space:pre-wrap}.modal-input{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:14px;outline:none;margin-bottom:6px}.modal-input:focus{border-color:var(--primary)}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}.toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%);background:#1f2937;color:#fff;padding:10px 18px;border-radius:8px;font-size:14px;z-index:95;box-shadow:0 8px 24px #00000040;max-width:80vw}.toast.error{background:var(--danger)}.sidebar-backdrop{display:none}@media (max-width: 768px){.menu-btn{display:inline-block}.app-name{display:none}.topbar{padding:0 6px;gap:6px}.topbar-actions{gap:6px}.top-btn{padding:7px 9px;font-size:12px}.sidebar{position:fixed;top:var(--topbar-h);bottom:0;left:0;width:min(84vw,320px);transform:translate(-100%);transition:transform .2s ease;z-index:30;box-shadow:6px 0 24px #0000001f}.app-view.sidebar-open .sidebar{transform:translate(0)}.sidebar-backdrop{display:block;position:fixed;top:var(--topbar-h);bottom:0;left:0;right:0;background:#00000059;z-index:25;opacity:0;pointer-events:none;transition:opacity .2s}.app-view.sidebar-open .sidebar-backdrop{opacity:1;pointer-events:auto}.tree-ops{opacity:.55}.lp-content{margin:8px;padding:14px}}