:root{--background:#fff;--foreground:#111827;--text-secondary:#4b5563}html{margin:0;font-size:62.5%}body{background:var(--background);color:var(--foreground);margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;font-size:1.4rem}.text-xs{font-size:1.1rem;line-height:1.5}.text-sm{font-size:1.4rem;line-height:1.5}.text-base{font-size:1.6rem;line-height:1.6}.text-md{font-size:1.7rem;line-height:1.6}.text-lg{font-size:1.8rem;line-height:1.6}.text-xl{font-size:2rem;line-height:1.5}.text-2xl{font-size:2.2rem;line-height:1.4}.text-3xl{font-size:2.7rem;line-height:1.3}.text-4xl{font-size:3.4rem;line-height:1.2}.text-5xl{font-size:4.1rem;line-height:1.2}.font-normal{font-weight:400}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.font-extrabold{font-weight:800}.text-secondary{color:var(--text-secondary)}@media (max-width:768px){.text-xs{font-size:1.05rem}.text-sm{font-size:1.3rem}.text-base{font-size:1.5rem}.text-md{font-size:1.6rem}.text-lg{font-size:1.7rem}.text-xl{font-size:1.85rem}.text-2xl{font-size:2rem}.text-3xl{font-size:2.4rem}.text-4xl{font-size:3rem}.text-5xl{font-size:3.6rem}}@media (max-width:480px){.text-xs{font-size:1rem}.text-sm{font-size:1.2rem}.text-base{font-size:1.4rem}.text-md{font-size:1.5rem}.text-lg{font-size:1.6rem}.text-xl{font-size:1.75rem}.text-2xl{font-size:1.9rem}.text-3xl{font-size:2.2rem}.text-4xl{font-size:2.7rem}.text-5xl{font-size:3.2rem}}