:root{--primary: #2b6cb0;--primary-light: #3b82f6;--dark: #1a202c;--gray-100: #f7fafc;--gray-200: #edf2f7;--gray-500: #718096;--gray-700: #4a5568;--gray-900: #1a202c;--white: #fff;--hero-gradient: linear-gradient(135deg, #1a365d 0%, #2b6cb0 50%, #3182ce 100%);--section-radius: 16px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:PingFang SC,Microsoft YaHei,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--gray-900);background:var(--white);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{max-width:1200px;margin:0 auto;padding:0 24px}@media (max-width: 768px){.container{padding:0 16px}}