:root{--color-bg: #e9e6de;--color-bg-secondary: #f2efe8;--color-bg-tertiary: #ded9cd;--color-text: #20201d;--color-text-secondary: #59574f;--color-text-tertiary: #7b786d;--color-primary: #a8452d;--color-primary-hover: #8f3823;--color-primary-light: rgba(168, 69, 45, .1);--color-accent: #a8452d;--color-border: rgba(32, 32, 29, .22);--color-border-light: rgba(32, 32, 29, .11);--color-rule: rgba(32, 32, 29, .16);--shadow-sm: 3px 3px 0 rgba(32, 32, 29, .1);--shadow-md: 5px 5px 0 rgba(32, 32, 29, .12);--shadow-lg: 8px 8px 0 rgba(32, 32, 29, .14);--paper-grid: rgba(32, 32, 29, .05);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;--font-display: "Helvetica Neue", "Arial Narrow", var(--font-sans);--font-mono: "SF Mono", "Fira Code", "JetBrains Mono", Consolas, monospace;--max-width: 1160px;--max-width-narrow: 720px;--border-radius: 2px;--border-radius-sm: 2px;--tap-target: 44px;--ease-out: 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