*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-base: #f5f7fa;--bg-surface: #ffffff;--bg-elevated: #eef0f3;--bg-overlay: #f2f3f5;--bg-input: #f7f8f9;--border: #d1d9e6;--border-strong: #b8c2d4;--border-accent: #1b59c5;--text-primary: #1a1f2e;--text-secondary: #4b5565;--text-muted: #101111;--text-inverse: #ffffff;--accent-blue: #1a6fff;--accent-blue-dim: #1258cc;--accent-blue-glow: rgba(26, 111, 255, .08);--accent-cyan: #00b8d4;--accent-green: #00a86b;--accent-amber: #e68a2e;--accent-red: #e03a2e;--accent-purple: #8b5cf6;--sidebar-width: 240px;--sidebar-collapsed: 60px;--topbar-height: 56px;--font-ui: "IBM Plex Sans", sans-serif;--font-mono: "IBM Plex Mono", monospace;--transition: .15s ease;--transition-slow: .25s 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