:root{--color-bg-default:#EEF4FD;--color-bg-raised:#FFFFFF;--color-bg-sunken:#F2F6FC;--color-bg-inverse:#141C2B;--color-bg-brand:#2A6FDB;--color-bg-brand-hover:#1F57BC;--color-bg-control:#E6EDF7;--color-bg-control-hover:#D3DCE8;--color-bg-brand-subtle:#E3EDFD;--color-bg-accent:#EA4335;--color-bg-accent-subtle:#FDECEB;--color-bg-highlight:#F9F1CA;--color-bg-success:#E8F6EC;--color-bg-warning:#FEF3C7;--color-bg-danger:#FEE2E2;--color-fg-default:#141C2B;--color-fg-muted:#475467;--color-fg-subtle:#5F6B7E;--color-fg-on-inverse:#FFFFFF;--color-fg-on-brand:#FFFFFF;--color-fg-on-accent:#FFFFFF;--color-fg-brand:#1F63D1;--color-fg-accent:#1F63D1;--color-fg-accent-red:#C0301E;--color-fg-success:#15803D;--color-fg-warning:#92400E;--color-fg-danger:#B91C1C;--color-border-default:#E3E9F2;--color-border-strong:#D3DCE8;--color-border-interactive:#7C879A;--color-border-focus:#4285F4;--color-brand-succoco:#4285F4;--color-brand-pon:#EA4335;--color-brand-sun:#EACD42;--color-brand-sun-shade:#DDBE3C;--color-brand-ink:#342B28;--space-0:0;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--radius-full:999px;--shadow-overlay:0 8px 24px rgba(20,28,43,0.12),0 2px 8px rgba(20,28,43,0.06);--motion-duration-fast:150ms;--motion-duration-base:220ms;--motion-easing-standard:cubic-bezier(0.4,0,0.2,1);--motion-easing-spring:linear(0,0.5 20%,0.86 36%,1.02 55%,1 75%,1);--max-width-prose:720px;--max-width-app:1080px;--max-width-wide:1280px;--breakpoint-sm:480px;--breakpoint-md:768px;--breakpoint-lg:1024px;--font-family-sans:var(--font-sans),-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium",Meiryo,sans-serif;--font-family-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;--font-size-xs:12px;--font-size-sm:15px;--font-size-md:16px;--font-size-lg:22px;--font-size-xl:26px;--font-size-2xl:34px;--font-size-hero:clamp(30px,7vw,52px);--font-weight-regular:400;--font-weight-bold:600;--line-height-tight:1.3;--line-height-snug:1.5;--line-height-normal:1.7}