:root{--bg: #ffffff;--surface: #f7f8fa;--border: #e3e6ea;--text: #1a1d21;--muted: #6b7280;--grid: #eceff3;--line: #4b5563;--range-band: rgba(34, 197, 94, .12);--status-normal: #15803d;--status-warn: #b45309;--status-bad: #dc2626;--status-unknown: #6b7280;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #0f1216;--surface: #171b21;--border: #262c34;--text: #e6e9ee;--muted: #9aa4b2;--grid: #232830;--line: #94a3b8;--range-band: rgba(34, 197, 94, .16);--status-normal: #4ade80;--status-warn: #fbbf24;--status-bad: #f87171;--status-unknown: #9aa4b2}}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%}a{color:inherit;text-decoration:none}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 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