:root{--tc-color-bg:#ffffff;--tc-color-surface:#f6f6f7;--tc-color-ink:#14161a;--tc-color-ink-soft:#5a6069;--tc-color-line:#e3e5e8;--tc-color-accent:#e11d2e;--tc-color-accent-ink:#ffffff;--tc-color-dark:#0c0e11;--tc-color-dark-ink:#f4f5f6;--tc-font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--tc-text-sm:0.875rem;--tc-text-base:1rem;--tc-text-lg:1.125rem;--tc-text-xl:1.5rem;--tc-text-2xl:2rem;--tc-text-3xl:clamp(2.25rem,5vw,3rem);--tc-leading:1.6;--tc-leading-tight:1.15;--tc-tracking-wide:0.06em;--tc-space-1:0.25rem;--tc-space-2:0.5rem;--tc-space-3:0.75rem;--tc-space-4:1rem;--tc-space-6:1.5rem;--tc-space-8:2rem;--tc-space-12:3rem;--tc-space-16:4rem;--tc-container:1200px;--tc-gutter:clamp(1rem,4vw,2rem);--tc-radius:6px;--tc-header-height:64px;--tc-ease:180ms ease}