:root{--paper: #f1f5ff;--paper-deep: #e2eafb;--surface: #ffffff;--surface-soft: #f5f8ff;--ink: #0e1b33;--ink-soft: #2a3b58;--muted: #5f6f8c;--line: #d6e0f2;--line-strong: #b7c6e3;--brand: #1b5cff;--brand-deep: #0b3ac4;--forest: var(--brand);--forest-deep: var(--brand-deep);--accent: #ff5a3c;--accent-soft: #ffe4dc;--gold: #ffb020;--sage: #12c6a3;--danger: #e23d3d;--navy: #0b1530;--navy-2: #10203f;--navy-3: #16294d;--chalk: #e8f0ff;--blue-bright: #5ea0ff;--mint-bright: #4ade9c;--radius: 10px;--radius-lg: 16px;--shadow: 0 1px 0 rgba(14, 27, 51, .04), 0 18px 40px -28px rgba(14, 27, 51, .45);--font-display: "Songti SC", "Noto Serif CJK SC", "STSong", "SimSun", serif;--font-ui: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, 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