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1.25rem 3.5rem #0f172a0f;--radius-sm:.625rem;--radius-md:.875rem;--radius-lg:1.25rem;--font-sans:"Be Vietnam Pro", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--hero-title-size:clamp(2.55rem, 4.5vw, 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