:root{--sidebar-width: 220px;--sidebar-bg: #0f172a;--sidebar-hover: #1e293b;--sidebar-active: #1e3a5f;--primary: #4f46e5;--primary-light: #eef2ff;--primary-dark: #3730a3;--success: #10b981;--success-light: #d1fae5;--warning: #f59e0b;--warning-light: #fef3c7;--danger: #ef4444;--danger-light: #fee2e2;--bg: #f1f5f9;--card-bg: #ffffff;--text: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #e2e8f0;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 6px rgba(0,0,0,.05)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column;z-index:100;overflow-y:auto}.sidebar-logo{padding:20px;border-bottom:1px solid 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