:root{--bg-color: #f4f6f8;--card-bg: #ffffff;--text-main: #2d3748;--text-secondary: #718096;--border-color: #e2e8f0;--accent-color: #3182ce;--success-color: #48bb78;--shadow: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)}@media (prefers-color-scheme: dark){:root{--bg-color: #1a202c;--card-bg: #2d3748;--text-main: #f7fafc;--text-secondary: #a0aec0;--border-color: #4a5568;--accent-color: #63b3ed;--success-color: #68d391;--shadow: 0 10px 15px -3px rgba(0, 0, 0, .5)}}body{margin:0;background-color:var(--bg-color);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;transition:background-color .3s ease,color .3s ease}