:root{--color-primary: #4696d2;--color-primary-rgb: 70, 150, 210;--color-primary-hover: #3878a8;--color-primary-soft: rgba(70, 150, 210, .1);--color-dark: #1d284a;--color-dark-rgb: 29, 40, 74;--bg: #ffffff;--bg-secondary: #eaeef4;--bg-tertiary: #f8f9fa;--surface: #ffffff;--surface-hover: #eaeef4;--border: #dee2e6;--border-strong: #ced4da;--text: #212529;--text-secondary: rgba(33, 37, 41, .75);--text-tertiary: rgba(33, 37, 41, .5);--cat-bg: rgba(70, 150, 210, .12);--cat-fg: #1d284a;--stage-bg: rgba(25, 135, 84, .1);--stage-fg: #0a5c37;--subject-bg: rgba(29, 40, 74, .08);--subject-fg: #1d284a;--radius-sm: 4px;--radius: 6px;--radius-lg: 8px;--radius-xl: 10px;--shadow-xs: 0 1px 3px rgba(0,0,0,.06);--shadow-sm: 0 2px 6px rgba(0,0,0,.08);--shadow-md: 0 4px 16px rgba(0,0,0,.12);--shadow-lg: 0 8px 32px rgba(0,0,0,.16);--ease-smooth: cubic-bezier(.4, 0, .2, 1);--ease-out: cubic-bezier(0, 0, .2, 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