:root{color-scheme:light;--color-brand-50:#FFF1F3;--color-brand-100:#FFE2E5;--color-brand-200:#F2B3BB;--color-brand-500:#C8102E;--color-brand-600:#A50C25;--color-brand-700:#7A0A1C;--color-brand-900:#3D000A;--color-accent-500:#1B4F72;--color-accent-600:#143957;--color-ink-50:#F6F8FA;--color-ink-100:#EEF1F4;--color-ink-200:#E0E6EC;--color-ink-300:#CBD5E1;--color-ink-400:#94A3B8;--color-ink-500:#64748B;--color-ink-700:#334155;--color-ink-900:#0F172A;--color-success:#2E7D5B;--color-warning:#B45309;--color-danger:#B91C1C;--color-paper:rgba(255,255,255,0.85);--color-paper-strong:#FFFFFF;--color-paper-muted:#F6F8FA;--color-line-soft:rgba(15,23,42,0.06);--color-line-strong:rgba(15,23,42,0.12);--font-ui:"PingFang SC","Hiragino Sans GB","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;--font-display:"PingFang SC","Hiragino Sans GB","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;--font-sans:var(--font-ui);--font-serif:var(--font-display);--ease-smooth:cubic-bezier(0.22,1,0.36,1);--duration-fast:150ms;--duration-base:200ms;--duration-slow:320ms;--shadow-xs:0 1px 2px rgba(15,23,42,0.04);--shadow-sm:0 2px 8px rgba(15,23,42,0.05);--shadow-md:0 6px 20px rgba(15,23,42,0.07);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-pill:999px;--page-max-width:1400px;--content-max-width:1180px;--reading-width:48ch}