*{box-sizing:border-box;margin:0;padding:0}body{color:#333;background:#f9fafb;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}@media (width<=768px){.checkout-container{padding:24px 16px!important}.checkout-title{font-size:22px!important}.plan-grid{flex-direction:column!important}.billing-toggle{flex-wrap:wrap}.checkout-card{padding:16px!important}.success-container{padding:40px 16px!important}.success-actions{flex-direction:column!important}}