:root{--bg-page: #f2f3f5;--bg-card: #ffffff;--bg-card-hover: #f8f9fa;--bg-sidebar: #ffffff;--border: #e8eaed;--border-color: #e8eaed;--border-strong: #dadce0;--text-primary: #1a1a1a;--text-secondary: #5f6368;--text-muted: #80868b;--accent: #1a1a1a;--danger: #d93025;--success: #1e8e3e;--radius: 8px;--radius-lg: 12px;--sidebar-w: 220px;--header-h: 56px;--font: "Noto Sans SC", -apple-system, sans-serif;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow: 0 2px 8px rgba(0, 0, 0, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .1);--shadow-btn: 0 2px 4px rgba(0, 0, 0, .12);--shadow-btn-hover: 0 4px 12px rgba(0, 0, 0, .15);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: .75rem;--spacing: 1rem;--spacing-lg: 1.25rem;--spacing-xl: 1.5rem;--line-height-tight: 1.35;--line-height: 1.5;--line-height-relaxed: 1.6}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%;font-family:var(--font);font-size:14px;color:var(--text-primary);background:var(--bg-page);-webkit-font-smoothing:antialiased}a{color:var(--text-primary);text-decoration:none}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:14px}.app-layout{display:flex;min-height:100vh;flex-direction:column}.app-header{height:var(--header-h);background:var(--bg-sidebar);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:space-between;padding:0 1rem;position:sticky;top:0;z-index:100}.app-body{display:flex;flex:1;overflow:hidden}.app-sidebar{width:var(--sidebar-w);background:var(--bg-sidebar);border-right:1px solid var(--border);box-shadow:var(--shadow-sm);overflow-y:auto;transition:width .2s,transform .2s}.app-main{flex:1;overflow:auto;padding:1.5rem;background:var(--bg-page)}@media (max-width: 768px){.app-sidebar{position:fixed;left:0;top:var(--header-h);bottom:0;z-index:90;transform:translate(-100%)}.app-sidebar.open{transform:translate(0)}.app-main{padding:1rem}}.nav-list{list-style:none;padding:.5rem 0}.nav-item{margin:2px 8px;border-radius:var(--radius);overflow:hidden}.nav-link{display:block;padding:10px 12px;color:var(--text-secondary);transition:background .15s,color .15s}.nav-link:hover,.nav-link.router-link-active{background:var(--bg-card-hover);color:var(--text-primary)}.nav-link.router-link-active{border-left:3px solid var(--text-primary);padding-left:9px;font-weight:500}.nav-sub{list-style:none;padding-left:1rem;border-left:1px solid var(--border);margin-left:12px}.nav-sub .nav-link{padding:8px 12px;font-size:13px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing);box-shadow:var(--shadow);line-height:var(--line-height)}.card-title{font-size:15px;font-weight:600;margin-bottom:var(--spacing);color:var(--text-primary);line-height:var(--line-height-tight)}.form-row{display:flex;flex-wrap:wrap;gap:var(--spacing);align-items:flex-end;margin-bottom:var(--spacing);line-height:var(--line-height)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.form-group label{font-size:12px;color:var(--text-muted);line-height:var(--line-height-tight)}.form-control{padding:8px 12px;border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--bg-card);color:var(--text-primary);min-width:140px;transition:border-color .15s,box-shadow .15s}.form-control:focus{outline:none;border-color:var(--text-secondary);box-shadow:0 0 0 3px #0000000f}.form-control::placeholder{color:var(--text-muted)}input[type=date].form-control,input[type=datetime-local].form-control{min-height:36px;padding:8px 12px;cursor:pointer;color-scheme:light}input[type=date]::-webkit-calendar-picker-indicator,input[type=datetime-local]::-webkit-calendar-picker-indicator{cursor:pointer;opacity:.6}.btn{padding:8px 16px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--bg-card);color:var(--text-primary);box-shadow:var(--shadow-sm);transition:background .15s,border-color .15s,box-shadow .15s}.btn:hover{background:var(--bg-card-hover);border-color:var(--text-muted);box-shadow:var(--shadow)}.btn-primary{background:var(--text-primary);color:#fff;border-color:var(--text-primary);box-shadow:var(--shadow-btn)}.btn-primary:hover{background:#333;border-color:#333;box-shadow:var(--shadow-btn-hover)}.btn-sm{padding:6px 12px;font-size:13px}.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm)}table{width:100%;border-collapse:collapse;font-size:13px;background:var(--bg-card)}th,td{padding:var(--spacing-sm) var(--spacing-md);text-align:left;border-bottom:1px solid var(--border);line-height:var(--line-height)}th{font-weight:500;color:var(--text-secondary);white-space:nowrap;background:var(--bg-card-hover)}tr:hover td{background:var(--bg-card-hover)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1rem;margin-bottom:1.5rem}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow);transition:box-shadow .2s}.stat-card:hover{box-shadow:var(--shadow-md)}.stat-card .label{font-size:12px;color:var(--text-muted);margin-bottom:4px}.stat-card .value{font-size:22px;font-weight:600;color:var(--text-primary)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;background:var(--bg-page)}.login-box{width:100%;max-width:380px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md)}.login-logo{text-align:center;margin-bottom:1rem}.login-logo img{width:48px;height:48px;display:inline-block}.login-box h1{font-size:20px;font-weight:600;text-align:center;margin-bottom:1.5rem;color:var(--text-primary)}.login-box .form-group{margin-bottom:1rem}.login-box .form-control{width:100%;min-width:0}.login-box .btn-primary{width:100%;padding:10px;margin-top:.5rem}.pagination{flex-wrap:wrap}.pagination-info{min-width:0;white-space:normal}.pagination .btn{white-space:nowrap;flex-shrink:0}.mt-1{margin-top:var(--spacing-sm)}.mb-1{margin-bottom:var(--spacing-sm)}.mb-2{margin-bottom:var(--spacing)}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.text-danger{color:var(--danger)}.range-form{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}.range-form-group{display:flex;align-items:center;gap:.5rem}.range-form-group label{font-size:13px;color:var(--text-muted);white-space:nowrap}.range-form .form-control{width:140px}@media (max-width: 768px){.range-form{flex-direction:column;align-items:stretch}.range-form-group{width:100%}.range-form-group .form-control{flex:1;min-width:0;width:auto}.range-form .btn{align-self:flex-start}}.date-range-hint{font-size:12px;color:var(--danger);margin-top:var(--spacing-xs)}