:root{--primary-color: #1890ff;--primary-color-hover: #40a9ff;--primary-color-active: #096dd9;--gradient-start: #2E5C8A;--gradient-end: #122562;--bg-primary: #ffffff;--bg-secondary: #fafafa;--bg-dark: #001529;--text-primary: #262626;--text-secondary: #8c8c8c;--text-inverse: #ffffff;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-xxl: 48px;--spacing-xxxl: 64px;--shadow-sm: 0 2px 8px 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);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--transition-fast: .2s ease;--transition-normal: .3s ease;--transition-slow: .5s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-primary);background-color:var(--bg-primary);line-height:1.6}#root{min-height:100vh}.section{padding:var(--spacing-xxxl) var(--spacing-xl)}@media (max-width: 768px){.section{padding:var(--spacing-xxl) var(--spacing-md)}}.fade-in{animation:fadeIn .6s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-color-hover)}