:root{--bg-primary: #050508;--bg-secondary: #0a0d12;--bg-tertiary: #121820;--bg-hover: #1a2230;--bg-active: #00f0ff20;--text-primary: #e2e8f0;--text-secondary: #8b9cad;--text-muted: #5a6a78;--accent-primary: #00f0ff;--accent-secondary: #00c8d8;--accent-gradient: linear-gradient(135deg, #00f0ff 0%, #0088aa 100%);--border-color: #1e2a3a;--border-subtle: #141c26;--user-bubble: linear-gradient(135deg, #0a3a5c 0%, #062a48 100%);--assistant-bubble: #121820;--success: #00f0ff;--warning: #ffaa00;--error: #ff4444;--sidebar-width: 280px;--header-height: 60px;--message-max-width: 800px;--font-sans: "JetBrains Mono", "Cascadia Mono", "Consolas", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Mono", "Consolas", "Noto Sans Mono CJK SC", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", monospace;--shadow-sm: 0 1px 2px rgba(0, 240, 255, .1);--shadow-md: 0 4px 12px rgba(0, 240, 255, 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