:root{--font: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;--primary: #2563eb;--primary-light: #eff6ff;--primary-dim: #93c5fd;--bg: #f8fafc;--sidebar-bg: #ffffff;--card-bg: #ffffff;--border: #e2e8f0;--text: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--success: #16a34a;--danger: #dc2626;--sidebar-width: 228px;--sidebar-collapsed: 60px;--topbar-height: 54px;--radius: 8px;--radius-lg: 12px;--transition: .22s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{height:100%;font-size:15px}body{font-family:var(--font);background:var(--bg);color:var(--text);height:100%;overflow:hidden}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;background:none;font-family:inherit}input{font-family:inherit}.hidden{display:none!important}#app{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--sidebar-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width var(--transition),min-width var(--transition);overflow:hidden;z-index:100;box-shadow:1px 0 0 var(--border)}.sidebar.collapsed{width:var(--sidebar-collapsed);min-width:var(--sidebar-collapsed)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:0 14px;height:var(--topbar-height);border-bottom:1px solid var(--border);flex-shrink:0}.logo{display:flex;align-items:center;gap:10px;overflow:hidden}.logo-icon{font-size:20px;flex-shrink:0}.logo-text{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;opacity:1;transition:opacity var(--transition)}.sidebar.collapsed .logo-text{opacity:0}.collapse-btn{width:28px;height:28px;border-radius:6px;color:var(--text-muted);font-size:16px;display:flex;align-items:center;justify-content:center;transition:background var(--transition),transform var(--transition);flex-shrink:0}.collapse-btn:hover{background:var(--bg);color:var(--text)}.sidebar.collapsed .collapse-btn{transform:rotate(180deg)}.nav{flex:1;overflow-y:auto;overflow-x:hidden;padding:10px 0;display:flex;flex-direction:column}.nav::-webkit-scrollbar{width:4px}.nav::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.nav-group{margin-bottom:2px}.nav-group-title{display:flex;align-items:center;width:100%;padding:7px 12px;gap:8px;font-size:13px;font-weight:600;color:var(--text-secondary);transition:background var(--transition),color var(--transition);white-space:nowrap;text-align:left}.nav-group-title:hover{background:var(--primary-light);color:var(--primary)}.group-icon{font-size:15px;flex-shrink:0}.group-label{flex:1;overflow:hidden;transition:opacity var(--transition)}.sidebar.collapsed .group-label{opacity:0}.group-arrow{font-size:11px;transition:transform var(--transition),opacity var(--transition);opacity:.5;color:var(--text-muted)}.nav-group.open .group-arrow{transform:rotate(90deg)}.sidebar.collapsed .group-arrow{opacity:0}.nav-children{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.4,0,.2,1);margin-left:28px;border-left:1.5px solid var(--border);padding-left:0}.nav-group.open .nav-children{max-height:400px}.sidebar.collapsed .nav-children{display:none}.nav-item{display:flex;align-items:center;padding:7px 10px 7px 14px;font-size:13.5px;color:var(--text-secondary);transition:background var(--transition),color var(--transition);white-space:nowrap;border-left:2px solid transparent;margin-left:-1.5px;position:relative}.nav-item:hover{background:var(--primary-light);color:var(--primary)}.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600;border-left-color:var(--primary)}.nav-bottom{margin-top:auto;border-top:1px solid var(--border);padding-top:8px}.nav-settings{padding-left:14px;gap:8px;border-left:none;font-weight:500}.nav-settings:hover{background:var(--primary-light);color:var(--primary)}.nav-settings.active{background:var(--primary-light);color:var(--primary);font-weight:600}.sidebar.collapsed .nav-settings{justify-content:center;padding-left:0}.sidebar.collapsed .nav-settings .sidebar-label{display:none}.main{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden}.topbar{height:var(--topbar-height);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:var(--card-bg);flex-shrink:0;gap:12px}.topbar-left{display:flex;align-items:center;gap:10px;flex-shrink:0}.topbar-right{display:flex;align-items:center;gap:6px;flex-shrink:0}.pinned-tabs{display:flex;align-items:center;gap:4px}.pinned-tab{display:flex;align-items:center;gap:6px;padding:5px 12px;border-radius:6px;font-size:13px;font-weight:500;color:var(--text-secondary);border:1px solid var(--border);background:var(--bg);transition:all var(--transition);white-space:nowrap}.pinned-tab:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary-dim)}.breadcrumb{flex:1;text-align:center;font-size:14px;font-weight:600;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar-tool-btn{display:flex;align-items:center;gap:5px;padding:5px 10px;border-radius:6px;border:1px solid var(--border);background:var(--bg);font-size:13px;color:var(--text-secondary);transition:all var(--transition)}.topbar-tool-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary-dim)}.tool-icon{font-size:14px}kbd{font-family:var(--font);font-size:11px;color:var(--text-muted);background:var(--border);border-radius:3px;padding:1px 4px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--text-muted);transition:background .3s;flex-shrink:0}.status-dot.ok{background:var(--success);box-shadow:0 0 5px #16a34a80}.status-dot.err{background:var(--danger)}.topbar-hint{font-size:12px;color:var(--text-muted)}.topbar-datetime{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:100px;font-variant-numeric:tabular-nums;color:var(--text-secondary);line-height:1.2}.datetime-date{font-size:11.5px;color:var(--text-muted);font-weight:500}.datetime-clock{font-size:13.5px;font-weight:600;color:var(--text)}.content{flex:1;overflow-y:auto;padding:24px}.content::-webkit-scrollbar{width:6px}.content::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.loading-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;gap:16px;color:var(--text-muted)}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.lock-overlay{position:fixed;inset:0;background:#f8fafcf2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:9999;display:flex;align-items:center;justify-content:center}.lock-box{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 20px 60px #00000014;padding:48px 40px;width:360px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;animation:lockIn .25s ease}@keyframes lockIn{0%{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}.lock-icon{font-size:40px}.lock-box h2{font-size:20px;font-weight:700;color:var(--text)}.lock-hint{font-size:13px;color:var(--text-muted)}.lock-input{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;outline:none;transition:border-color var(--transition);text-align:center;letter-spacing:3px}.lock-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.lock-btn{width:100%;padding:12px;background:var(--primary);color:#fff;border-radius:var(--radius);font-size:15px;font-weight:600;transition:filter var(--transition)}.lock-btn:hover{filter:brightness(1.1)}.lock-error{font-size:13px;color:var(--danger)}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.page-title{font-size:22px;font-weight:700;color:var(--text);margin-bottom:20px}.page-subtitle{font-size:13px;color:var(--text-secondary);margin-top:-14px;margin-bottom:20px}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;bottom:0;transform:translate(-100%);transition:transform var(--transition);z-index:200}.sidebar.mobile-open{transform:translate(0)}.mobile-menu-btn{display:flex}}