:root{--color-primary:#6366f1;--color-secondary:#8b5cf6;--color-accent:#ec4899;--color-text:#1f2937;--color-text-light:#6b7280;--color-bg:#ffffff;--color-bg-alt:#f9fafb;--color-border:#e5e7eb;--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2rem;--spacing-xl:3rem;--spacing-2xl:4rem;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-mono:"Courier New",Courier,monospace;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1);--border-radius:0.5rem;--transition:all 0.3s ease}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-text);background-color:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none;transition:var(--transition)}img{max-width:100%;height:auto;display:block}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:var(--transition)}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:700}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}@media (min-width:768px){h1{font-size:3rem}h2{font-size:2.5rem}.container{padding:0 var(--spacing-lg)}}