:root {--content-width: 1280px;--content-narrow: 820px;--header-height: 82px;--page-gutter: clamp(1rem, 3vw, 2rem);--section-space: clamp(4rem, 7vw, 7rem);--grid-gap: clamp(1rem, 2vw, 1.5rem);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 22px;--radius-pill: 999px;--shadow-card: 0 12px 35px rgba(14, 64, 55, 0.08);--shadow-hover: 0 18px 45px rgba(14, 64, 55, 0.14);--transition-base: 220ms ease;}