:root{--bg: #ffffff;--bg-sidebar: #f4f5f7;--surface: #ffffff;--border: #e6e7ea;--text: #191919;--text-muted: #6b6f76;--text-faint: #a5a9b1;--accent: #4772fa;--accent-soft: #e8eefe;--overdue: #e5405e;--font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;--radius-row: 6px;--radius-card: 10px;--max: 960px}@media (prefers-color-scheme: dark){:root{--bg: #191919;--bg-sidebar: #202020;--surface: #262626;--border: #333333;--text: #e8e8e8;--text-muted: #9a9ea6;--text-faint: #6a6e76;--accent: #5b83ff;--accent-soft: 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