:root{--font-ui:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI",system-ui,sans-serif;--hairline:rgba(148, 163, 184, 0.12);--material-sidebar:rgba(15, 23, 42, 0.95);--material-card:rgba(30, 41, 59, 0.45);--material-topbar:rgba(15, 23, 42, 0.92);--radius-control:10px;--radius-window:14px}