:root{--canvas:#f7f9fc;--surface:#fff;--text-primary:#152238;--text-secondary:#526078;--border-subtle:#dee4ed;--border-control:#7c899e;--brand-action:#304ffe;--brand-action-hover:#233bcc;--brand-soft:#eef2ff;--accent-signal:#43e88d;--success:#14734b;--warning:#875600;--danger:#b42336;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px;--space-8:32px;--space-12:48px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-card:0 2px 6px #15223805,0 8px 24px #15223804;--shadow-overlay:0 24px 80px #15223830;--font-mono:ui-monospace,"SFMono-Regular",Consolas,monospace;--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.25rem;--text-xl:clamp(1.75rem,3vw,2.25rem)}