:root{--color-navy: #1e3a5f;--color-ocean: #0077b6;--color-sky: #e8f4f8;--color-success: #2e7d32;--color-warning: #f57c00;--color-danger: #c62828;--color-bg: #f5f7fa;--color-white: #ffffff;--color-text: #1a1a2e;--color-muted: #6b7280;--color-border: #e2e8f0;--color-sidebar-hover: rgba(255, 255, 255, .1);--color-sidebar-active: rgba(255, 255, 255, .2);--sidebar-width: 240px;--topbar-height: 60px;--border-radius: 8px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .2);--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe 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