:root{--bg:#0b1020;--bg-elev:#121831;--surface:#fff;--text:#1a2233;--text-muted:#5b6678;--text-invert:#eef2ff;--primary:#5b5bf0;--primary-dark:#3f3fd1;--accent:#f5a623;--border:#e3e8f0;--radius:12px;--maxw:1080px;--shadow:0 6px 24px rgba(20,28,60,.1)}*{box-sizing:border-box}body,html{margin:0;padding:0;color:var(--text);background:#f7f9fc;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:rgba(11,16,32,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--text-invert);border-bottom:1px solid hsla(0,0%,100%,.08)}.site-header 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