:root{--bg:#ffffff;--bg-subtle:#f6f8fa;--border:#d0d7de;--border-muted:#d8dee4;--fg:#1f2328;--fg-muted:#656d76;--accent:#0969da;--accent-fg:#ffffff;--danger:#cf222e;--success:#1a7f37;--mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;--shadow-sm:0 1px 0 rgba(31,35,40,0.04);--btn-bg:#f6f8fa;--btn-hover-bg:#eef1f4;--btn-active-bg:#e7ebef;--btn-border-hover:#afb8c1;--btn-primary-bg:#1f883d;--btn-primary-hover-bg:#1a7f37;--btn-primary-border:rgba(31,35,40,0.15);--btn-danger-hover-bg:#cf222e}@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--bg-subtle:#161b22;--border:#30363d;--border-muted:#21262d;--fg:#e6edf3;--fg-muted:#8b949e;--accent:#2f81f7;--accent-fg:#ffffff;--danger:#f85149;--success:#3fb950;--shadow-sm:0 0 transparent;--btn-bg:#21262d;--btn-hover-bg:#30363d;--btn-active-bg:#282e33;--btn-border-hover:#8b949e;--btn-primary-bg:#238636;--btn-primary-hover-bg:#2ea043;--btn-primary-border:rgba(240,246,252,0.1);--btn-danger-hover-bg:#da3633}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:14px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.mono,code,pre{font-family:var(--mono)}