:root{--brand:#1f6feb;--bg:#f6f7f9;--panel:#ffffff;--text:#1c2330;--muted:#5b6676;--line:#e3e7ee;--good:#137a3f;--bad:#c62828;--warn:#a35a00;--info:#1f5fbf;--radius:10px;--shadow:0 1px 2px rgba(16,24,40,0.06);color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#0f141b;--panel:#161d27;--text:#e6ebf2;--muted:#9aa6b6;--line:#253041;--good:#4cc27c;--bad:#ff6b6b;--warn:#f0a63a;--info:#6aa6ff;--shadow:none;color-scheme:dark}}*{box-sizing:border-box}body,html{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Noto 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