:root{--accent: #1caad9;--fg: #f2f3f5;--muted: rgba(242, 243, 245, .55);--glass: rgba(18, 19, 22, .72);--stroke: rgba(255, 255, 255, .09)}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:#0c0d0f}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--fg);-webkit-font-smoothing:antialiased;-webkit-user-select:none;user-select:none}#app{position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(120% 100% at 50% 38%,#34373b,#242628 52%,#191a1c);transition:background .7s ease}#app.bg-studio{background:radial-gradient(115% 95% at 50% 36%,#2e3033,#1e2022 52%,#111214)}#app.bg-dusk{background:radial-gradient(120% 100% at 50% 38%,#3e2e24,#221a15 52%,#100c0a)}#app.bg-night{background:radial-gradient(120% 100% at 50% 38%,#192332,#0e141d 52%,#07090c)}#app:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none;background:radial-gradient(140% 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