:root{--text-xs:0.786rem;--text-sm:0.857rem;--text-base:1rem;--text-md:1.143rem;--text-lg:1.286rem;--text-xl:1.571rem;--text-2xl:2rem;--lh-tight:1.25;--lh-heading:1.4;--lh-body:1.5;--lh-relaxed:1.55;--font-sans:-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,monospace;--fw-normal:400;--fw-medium:500;--fw-bold:600;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:32px;--space-8:48px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-full:999px;--rail-width:72px;--rail-width-expanded:208px;--rail-control-inset:3px;--featured-rail-glow-inset:1px;--page-width-ratio:76%;--page-min-width:720px;--page-width:min(100%,max(var(--page-min-width),var(--page-width-ratio)));--page-padding-top:var(--space-7);--page-padding-bottom:var(--space-8);--feed-width:780px;--reading-width:760px;--content-wide:1120px;--touch-target:44px;--control-hit-size:max(var(--touch-target),calc(var(--touch-target) / var(--ui-scale, 1)));--control-icon-visual-size:var(--space-7);--control-chip-visual-height:var(--space-7);--control-tag-visual-height:var(--space-6);--control-badge-visual-height:var(--space-5);--control-button-compact-height:calc(var(--space-7) + var(--space-1));--control-button-regular-height:var(--touch-target);--mobile-page-gutter:16px;--mobile-topbar-height:48px;--mobile-tabbar-height:56px;--mobile-composer-max-height:144px;--dur-fast:120ms;--dur-base:180ms;--dur-slow:240ms;--dur-breath:1400ms;--ease-standard:cubic-bezier(0.2,0.6,0.2,1);--z-nav:100;--z-overlay:200;--z-drawer:300;--z-toast:500;--z-coachmark:600;--elev-1:0 1px 2px rgba(0,0,0,0.3);--elev-2:0 4px 12px rgba(0,0,0,0.35);--elev-3:0 12px 32px rgba(0,0,0,0.45);--glass-1:rgba(30,30,32,0.72);--glass-2:rgba(38,38,42,0.86);--glass-border:rgba(255,255,255,0.1);--glass-highlight:rgba(255,255,255,0.07);--glass-blur:24px;--glass-saturate:160%;--on-scrim:#fff;--ambient-accent:rgba(247,94,204,0.12);--ambient-cool:rgba(36,200,219,0.08);--elev-glass:0 16px 48px rgba(0,0,0,0.38);--chat-bg-solid-ink:#1a1a1a;--chat-bg-solid-slate:#1b2430;--chat-bg-solid-moss:#1c2620;--chat-bg-solid-plum:#241b2c;--bubble-text-warm:#f0e0c0;--bubble-text-cool:#c8dcf0;--bubble-text-contrast:#ffffff;--scene-id-0:#e8b39a;--scene-id-1:#a9c4d8;--scene-id-2:#c3bde0;--scene-id-3:#bdd4b4}:root[data-theme=light]{--elev-1:0 1px 2px rgba(16,24,40,0.06);--elev-2:0 4px 12px rgba(16,24,40,0.1);--elev-3:0 12px 32px rgba(16,24,40,0.14);--glass-1:rgba(246,247,250,0.72);--glass-2:rgba(251,252,253,0.88);--glass-border:rgba(255,255,255,0.72);--glass-highlight:rgba(255,255,255,0.82);--ambient-accent:rgba(146,62,252,0.09);--ambient-cool:rgba(36,200,219,0.08);--elev-glass:0 16px 48px rgba(16,24,40,0.16);--chat-bg-solid-ink:#f4f5f7;--chat-bg-solid-slate:#e8eef5;--chat-bg-solid-moss:#e8f0ea;--chat-bg-solid-plum:#f0eaf7;--bubble-text-warm:#5a4632;--bubble-text-cool:#2f4a63;--bubble-text-contrast:#0a0a0a;--scene-id-0:#a35c38;--scene-id-1:#2f5f80;--scene-id-2:#5b4c8a;--scene-id-3:#3f6b39}