:root{--bg-color: #0d1117;--text-color: #c9d1d9;--heading-color: #ffffff;--accent-color: #58a6ff;--accent-glow: rgba(88, 166, 255, .4);--link-color: #58a6ff;--border-color: #30363d;--header-bg: #161b22;--code-bg: #161b22;--card-bg: #161b22;--secondary-text: #8b949e;--nav-hover-bg: rgba(88, 166, 255, .08);--nav-active-bg: rgba(88, 166, 255, .12);--nav-active-shadow: rgba(88, 166, 255, .2);--font-mono: "JetBrains Mono", "Fira Code", Consolas, Monaco, "Courier New", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", monospace;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;--font-body: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif}:root[data-theme=light]{--bg-color: #f6f8fa;--text-color: #24292f;--heading-color: #1f2328;--accent-color: #0969da;--accent-glow: rgba(9, 105, 218, .3);--link-color: #0969da;--border-color: #d0d7de;--header-bg: #ffffff;--code-bg: #f0f2f5;--card-bg: #ffffff;--secondary-text: #57606a;--nav-hover-bg: rgba(9, 105, 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