:root,[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f5f6fa;--bg-sidebar: #f0f1f5;--bg-sidebar-hover: #e2e4ea;--bg-sidebar-active: #d5d8e0;--bg-input: #ffffff;--bg-message-hover: #f8f9fa;--bg-mention: #5865f2;--bg-badge: #e74c3c;--bg-banner-warn: #fff3cd;--bg-banner-error: #f8d7da;--bg-skeleton: #e9ecef;--text-primary: #1a1a2e;--text-secondary: #6c757d;--text-sidebar: #1a1a2e;--text-sidebar-dim: #6c757d;--text-mention: #ffffff;--text-link: #5865f2;--text-code: #d63384;--border-color: #e2e8f0;--border-input: #cbd5e0;--accent: #5865f2;--accent-hover: #4752c4;--danger: #e74c3c;--success: #2ecc71;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--sidebar-width: 260px;--header-height: 52px;--input-area-min: 60px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Courier New", monospace}[data-theme=dark]{--bg-primary: #1e1e2e;--bg-secondary: #181825;--bg-sidebar: #11111b;--bg-sidebar-hover: #1e1e2e;--bg-sidebar-active: #2a2a3e;--bg-input: #2a2a3e;--bg-message-hover: #252540;--bg-mention: #5865f2;--bg-badge: #e74c3c;--bg-banner-warn: #3d3200;--bg-banner-error: #4a1010;--bg-skeleton: #2a2a3e;--text-primary: #cdd6f4;--text-secondary: #8a8fb0;--text-sidebar: #cdd6f4;--text-sidebar-dim: #6c7086;--text-mention: #ffffff;--text-link: #89b4fa;--text-code: #f38ba8;--border-color: #313244;--border-input: #45475a;--accent: #89b4fa;--accent-hover: 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