*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f0f2f5;--sidebar-bg: #1a2332;--sidebar-text: #c8d3e0;--sidebar-active: #4a9eff;--header-bg: #ffffff;--card-bg: #ffffff;--border: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--success: #16a34a;--warning: #d97706;--sidebar-width: 240px;--header-h: 56px}body{font-family:Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit;font-size:14px;border:none;border-radius:6px;padding:7px 16px;transition:background .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b91c1c}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-sm{padding:4px 10px;font-size:12px}input,select,textarea{width:100%;padding:7px 10px;border:1px solid var(--border);border-radius:6px;font-family:inherit;font-size:14px;background:#fff;color:var(--text);outline:none;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--primary)}label{display:block;font-size:13px;font-weight:500;margin-bottom:4px;color:var(--text-muted)}.form-group{margin-bottom:14px}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:20px}table{width:100%;border-collapse:collapse;font-size:13px}thead th{background:var(--bg);padding:9px 12px;text-align:left;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border)}tbody td{padding:9px 12px;border-bottom:1px solid var(--border)}tbody tr:last-child td{border-bottom:none}tbody tr:hover{background:#f8fafc}.badge{display:inline-block;padding:2px 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.12s;font-size:13px}.nav-item:hover{background:#ffffff0f}.nav-item.active{background:#4a9eff26;color:var(--sidebar-active);font-weight:600}.sidebar-version{padding:12px 16px;font-size:11px;color:var(--text-muted);border-top:1px solid rgba(255,255,255,.08);margin-top:auto;text-align:center}.main-content{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column;min-height:100vh}.header{height:var(--header-h);background:var(--header-bg);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 24px;gap:16px;position:sticky;top:0;z-index:50}.header-title{font-size:15px;font-weight:600;flex:1}.header-user{font-size:13px;color:var(--text-muted)}.page{padding:24px;flex:1}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h1{font-size:20px;font-weight:700}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:200}.modal{background:#fff;border-radius:12px;padding:24px;min-width:400px;max-width:600px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0003}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-header h2{font-size:16px;font-weight:700}.modal-footer{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:8px;z-index:300}.toast{padding:12px 18px;border-radius:8px;font-size:13px;font-weight:500;box-shadow:0 4px 16px #00000026;animation:fadeIn .2s}.toast-success{background:#16a34a;color:#fff}.toast-error{background:#dc2626;color:#fff}.toast-info{background:#2563eb;color:#fff}@keyframes 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