:root{--bg: #ffffff;--bg-soft: #f6f8fb;--fg: #0f172a;--muted: #5b6472;--border: #e5e9f0;--brand: #10b981;--brand-fg: #ffffff;--card: #ffffff;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06)}@media (prefers-color-scheme: dark){:root{--bg: #0b1220;--bg-soft: #0f172a;--fg: #e6eaf2;--muted: #9aa5b8;--border: #1e293b;--brand: #10b981;--card: #111a2b;--shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}.muted{color:var(--muted)}.small{font-size:.85rem}.site-header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid 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