:root{--brand-standard:#00419a;--brand-aux-blue:#0095ff;--brand-aux-green:#37b800;--brand-aux-orange:#f59e0b;--background:#f8fafc;--text-primary:#243247;--text-secondary:#64748b;--color-surface:#fff;--color-text-inverse:#f1f5f9;--color-border:#e2e8f0;--color-border-strong:#cbd5e1;--color-ink:#0f172a;--color-ink-soft:#334155;--color-soft:#f1f5f9;--color-brand:var(--brand-standard);--color-on-brand:#fff;--color-accent-blue:var(--brand-aux-blue);--color-accent-green:var(--brand-aux-green);--color-accent-orange:var(--brand-aux-orange);--color-bg:var(--background);--color-text:var(--text-primary);--color-text-muted:var(--text-secondary);--logo-min-height-horizontal:20px;--logo-min-height-vertical:40px;--ip-min-display-height:40px;--shadow-xs:0 2px 8px #0f172a0d;--shadow-sm:0 8px 24px #0f172a12;--shadow-md:0 18px 40px #0f172a1a;--shadow-lg:0 30px 70px #0f172a29;--radius-xs:8px;--radius-sm:12px;--radius-md:18px;--radius-lg:24px;--radius-xl:32px;--radius-2xl:40px;--radius-pill:999px;--container-width:1180px;--header-height:76px;--section-space:clamp(64px, 8vw, 110px);--gutter:clamp(20px, 5vw, 32px);--font-sans:"Barlow", "Source Han Sans SC", "Source Han Sans CN", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;--font-en:"Barlow", "Segoe UI", system-ui, sans-serif;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--transition-fast:.16s var(--ease-out);--transition-base:.26s var(--ease-out);--transition-slow:.48s var(--ease-out);--z-header:100;--z-chat:90}