*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-secondary:#7c3aed;--color-bg:#ffffff;--color-bg-dark:#0f172a;--color-text:#1e293b;--color-text-light:#64748b;--color-border:#e2e8f0;--font-sans:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;--font-mono:'JetBrains Mono', 'Fira Code', monospace;--radius:8px;--shadow:0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);--transition:0.2s ease}body{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--color-primary-dark)}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}