:root,[data-theme=light]{--bg-app: #f4f3ef;--bg-panel: #ffffff;--bg-elevated: #ffffff;--bg-sunken: #f8f7f4;--bg-input: #ffffff;--bg-input-disabled: #f1f0ec;--bg-hover: #faf9f6;--bg-segmented: #e9e7e0;--bg-segmented-active: #ffffff;--bg-chat-scroll: #f9fafb;--sidebar-bg: linear-gradient(180deg, #ffffff 0%, #f6f5f0 100%);--sidebar-border: #e4e1d9;--sidebar-brand: #17181a;--sidebar-brand-sub: #6f7378;--sidebar-group-text: #767a82;--sidebar-group-hover: #17181a;--sidebar-group-hover-bg: rgba(23, 24, 26, .04);--sidebar-item-text: #4b4f56;--sidebar-item-hover-bg: rgba(23, 24, 26, .06);--sidebar-item-hover-text: #17181a;--sidebar-item-active-bg: #e8ecfd;--sidebar-item-active-text: #243db8;--sidebar-item-indicator: #2f4bd8;--sidebar-guide-line: rgba(23, 24, 26, .1);--sidebar-foot-bg: rgba(23, 24, 26, .025);--sidebar-chip-bg: #ffffff;--sidebar-chip-border: #dfdcd3;--sidebar-chip-hover-bg: #f3f2ed;--sidebar-menu-bg: #ffffff;--sidebar-menu-border: #dcd9cf;--sidebar-role-bg: #eceae3;--sidebar-role-text: #4b4f56;--text-main: #17181a;--text-soft: #3b3e43;--text-muted: #6f7378;--text-placeholder: #9fa3a9;--text-inverse: #fbfbfa;--border: #e4e1d9;--border-subtle: #efede7;--border-strong: #cfcbc0;--border-hover: #b5b1a5;--border-dark: rgba(255, 255, 255, .07);--border-focus: #2f4bd8;--primary: #1b1d21;--primary-hover: #34373d;--primary-fg: #ffffff;--accent: #2f4bd8;--accent-soft: #e8ecfd;--accent-soft-border: #cdd6fa;--accent-ok: #17744a;--accent-ok-bg: #e7f5ed;--accent-warn: #a85f03;--accent-warn-bg: #fdf3e3;--accent-danger: #c02626;--accent-danger-bg: #fbecec;--accent-danger-border: #f2caca;--accent-ink: #2b303a;--accent-ink-bg: #e9ebf0;--badge-default-bg: #efede7;--bar-gradient: linear-gradient(180deg, #3a3e45, #17181a);--toast-bg: #1b1d21;--toast-fg: #ffffff;--scrollbar-thumb: rgba(0, 0, 0, .18);--scrollbar-thumb-hover: rgba(0, 0, 0, .32);--shadow-sm: 0 1px 2px rgba(20, 20, 20, .05);--shadow-md: 0 6px 18px rgba(20, 20, 20, .08);--shadow-lg: 0 18px 48px 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