:root{--ch-font-sans: "-apple-system", "BlinkMacSystemFont", "Segoe UI", "Helvetica Neue", "Inter", sans-serif;--ch-font-wordmark: "SF Pro Display", "Inter", -apple-system, "Segoe UI", sans-serif;--ch-font-mono: "JetBrains Mono", "Menlo", "Monaco", monospace;--ch-ease-out: cubic-bezier(.32, .72, 0, 1);--ch-ease-spring: cubic-bezier(.34, 1.22, .64, 1);--ch-ease-emph: cubic-bezier(.2, .85, .2, 1);--ch-duration-micro: .16s;--ch-duration: .3s;--ch-duration-moderate: .42s;--ch-transition: background var(--ch-duration) var(--ch-ease-out), color var(--ch-duration) var(--ch-ease-out), border-color var(--ch-duration) var(--ch-ease-out), box-shadow var(--ch-duration) var(--ch-ease-out), transform var(--ch-duration-micro) var(--ch-ease-spring), opacity var(--ch-duration) var(--ch-ease-out);--ch-bg: #f3f5f9;--ch-surface: #ffffff;--ch-surface-alt: #f6f8fc;--ch-border: #e2e6ee;--ch-border-soft: #eceff4;--ch-divider: #dde2ea;--ch-text: #1a1d26;--ch-text-secondary: #5c6474;--ch-text-tertiary: 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