:root{--brand:#C41230;--brand-deep:#8B0E22;--brand-soft:#FBE9EC;--ink-1:#0A0A0A;--ink-2:#404040;--ink-3:#737373;--ink-4:#A3A3A3;--line-1:#E5E5E5;--line-2:#F0F0F0;--surface:#FFFFFF;--surface-alt:#FAFAFA;--font-sans:'Inter','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;--font-mono:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;--max-w:1280px;--pad-x:clamp(20px, 4vw, 56px);--radius-sm:4px;--radius-md:8px;--ease-out:cubic-bezier(.16, 1, .3, 1)}