:root{--primary:#2563eb;--primary-hover:#1d4ed8;--background:#f3f4f6;--surface:#fff;--text-main:#111827;--text-secondary:#6b7280;--border:#e5e7eb;--radius:8px;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow:0 4px 6px -1px rgba(0,0,0,.1);--font-sans:system-ui,-apple-system,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--background);color:var(--text-main);-webkit-font-smoothing:antialiased}button{cursor:pointer;font-family:inherit}a{color:inherit;text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:0 1rem}