:root{--bg-color: #f8f9fa;--slide-bg: #ffffff;--text-primary: #212529;--text-secondary: #6c757d;--accent-color: #3b82f6;--accent-hover: #2563eb;--border-color: #e9ecef;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}body{margin:0;font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{color:var(--text-primary);margin-top:0;font-weight:600}button{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}