:root{--bg: #f8f8f7;--surface: #ffffff;--text: #18181b;--muted: #71717a;--accent: #0f766e;--accent-hover: #0d9488;--accent-soft: rgba(15, 118, 110, .1);--border: #e4e4e7;--border-strong: #d4d4d8;--shadow: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 8px 24px rgba(0, 0, 0, .07);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--font-serif: "Newsreader", "Georgia", serif;--font-sans: "DM Sans", system-ui, -apple-system, sans-serif;--header-h: 3.85rem;--rail-collapsed-w: 4.75rem;--rail-toggle-w: 2.75rem;--rail-panel-w: 280px;--rail-open-w: calc(var(--rail-toggle-w) + 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