:root{--bg:#f5f5f7;--panel:rgba(255,255,255,0.82);--panel-strong:rgba(255,255,255,0.94);--text:#1d1d1f;--muted:#6e6e73;--faint:#8e8e93;--line:rgba(0,0,0,0.07);--blue:#007aff;--blue-soft:rgba(0,122,255,0.11);--green:#34c759;--green-soft:rgba(52,199,89,0.12);--orange:#ff9500;--orange-soft:rgba(255,149,0,0.13);--red:#ff3b30;--red-soft:rgba(255,59,48,0.11);--radius:8px;--shadow:0 24px 70px rgba(0,0,0,0.09);--soft-shadow:0 12px 34px rgba(0,0,0,0.06)}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;background:linear-gradient(180deg,rgba(255,255,255,.86),rgba(245,245,247,0) 280px),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,PingFang SC,Helvetica Neue,Arial,sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit;letter-spacing:0}a,button{-webkit-tap-highlight-color:transparent}.app-shell{display:grid;grid-template-columns:176px 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