:root{--bg:#121416;--bg-elevated:#1e2227;--bg-hover:#21262c;--bg-active:#262c33;--card-quiet:#181a1d;--border-input:#39424c;--sidebar-bg:#121416;--topbar-bg:#121416d1;--border:#2b3138;--border-subtle:#23282e;--border-header:#ffffff0f;--border-outline:#ffffff1c;--text:#c3c9d1;--text-strong:#f0f2f4;--text-muted:#8b939c;--text-faint:#6b7280;--accent:#dd7352;--accent-strong:#dd7352;--accent-contrast:#fff;--accent-tint:#dd735229;--accent-tint-hover:#dd73523d;--code-bg:#1b1f23;--shadow-img:0 10px 34px -16px #00000080;--topbar-h:64px;--tabs-h:48px;--nav-h:calc(var(--topbar-h) + var(--tabs-h));--sidebar-w:274px;--toc-w:240px;--content-max:720px;--wrap-max:1440px;--gutter:40px;--font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;--radius:10px}:root[data-theme=light]{--bg:#fff;--bg-elevated:#f9fafb;--bg-hover:#f3f4f6;--bg-active:#eceef1;--card-quiet:#f9fafb;--border-input:#d3d7dd;--sidebar-bg:#fff;--topbar-bg:#ffffffd1;--border:#e7e9ec;--border-subtle:#f0f1f3;--border-header:#0000000d;--border-outline:#0000001a;--text:#4b5563;--text-strong:#111827;--text-muted:#6b7280;--text-faint:#9ca3af;--accent:#dd7352;--accent-strong:#c55a3a;--accent-contrast:#fff;--accent-tint:#dd73521a;--accent-tint-hover:#dd735229;--code-bg:#f6f8fa;--shadow-img:0 10px 34px -18px #1018282e}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 24px)}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:15px;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%}::selection{background:var(--accent-tint-hover)}:focus-visible{outline:2px solid 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