:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-card: #1c2128;--border: #30363d;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-muted: #6e7681;--green: #3fb950;--red: #f85149;--yellow: #d29922;--blue: #58a6ff;--orange: #f0883e;--purple: #bc8cff;--accent: #58a6ff;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius: 8px;--radius-lg: 12px;--shadow: 0 4px 24px rgba(0,0,0,.4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--blue);text-decoration:none;transition:color .2s}a:hover{color:var(--text-primary)}img{max-width:100%;height:auto;display:block}.seo-figure{margin:2.5rem 0;padding:0;text-align:center}.seo-figure 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h4{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:14px}.sidebar-box ul{list-style:none;padding:0;margin:0}.sidebar-box li{margin-bottom:8px}.sidebar-box a{font-size:.875rem;color:var(--text-secondary);transition:color .2s}.sidebar-box a:hover{color:var(--blue)}.article-layout-grid{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start}@media(max-width:1024px){.article-layout-grid{grid-template-columns:1fr}.article-sidebar{display:none}}.learn-index-hero{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:56px 0 40px}.learn-index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-top:40px}.learn-index-card{display:flex;flex-direction:column;gap:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;color:var(--text-primary);text-decoration:none;transition:border-color .2s,transform 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