:root{--bg-primary: #f0f4f8;--bg-secondary: #ffffff;--accent: #3a86ff;--text-primary: #1a1a2e;--text-muted: #6c757d;--border: #dde3ed;--shadow: rgba(0, 0, 0, .08)}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;min-height:100vh}