:root{--bg:#0b0f14;--card:#121821;--text:#e6edf3;--muted:#9fb0c0;--accent:#4f8cff;--accent-2:#8a5cff;--edge:#1f2937}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial,Apple Color Emoji,Segoe UI Emoji;line-height:1.6}body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(1200px 800px at 80% -20%,rgba(79,140,255,.15),transparent 60%),radial-gradient(800px 600px at -20% 20%,rgba(138,92,255,.15),transparent 60%)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1120px;margin:0 auto;padding:24px}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:50;-webkit-backdrop-filter:saturate(160%) blur(8px);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--edge);background:linear-gradient(180deg,rgba(11,15,20,.9),rgba(11,15,20,.6))}.topbarInner{display:flex;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px}.brand{color:var(--text);font-weight:600}.hero{padding:96px 24px 48px;text-align:center}.hero h1{font-size:48px;margin:0 0 12px;letter-spacing:-.02em}.hero p{margin:0 auto;max-width:720px;color:var(--muted)}.cta{display:inline-flex;gap:12px;margin-top:28px}.btn{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;padding:12px 18px;border-radius:10px;border:1px solid hsla(0,0%,100%,.08);box-shadow:0 10px 20px rgba(0,0,0,.35)}.btn.secondary{background:transparent;border:1px solid var(--edge);color:var(--text)}.section{padding:56px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:16px;gap:16px}.card{background:var(--card);border:1px solid var(--edge);border-radius:14px;padding:18px}.card h3{margin-top:4px;margin-bottom:8px}.muted{color:var(--muted)}.author{display:grid;grid-template-columns:1fr 2fr;grid-gap:24px;gap:24px;align-items:center}.author img{width:100%;border-radius:12px;border:1px solid var(--edge)}.bookLayout{display:grid;grid-template-columns:280px 1fr;grid-gap:16px;gap:16px}.toc{position:-webkit-sticky;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto;padding-right:8px}.toc h3{margin-top:0}.toc a{display:block;padding:4px 0;color:var(--muted)}.toc a.active{color:var(--text)}.toc .lvl2{padding-left:12px}.toc .lvl3{padding-left:24px}.prose{background:var(--card);border:1px solid var(--edge);border-radius:14px;padding:24px}.prose h1,.prose h2,.prose h3{scroll-margin-top:80px}.prose pre{background:#0a0f16;padding:12px;border-radius:10px;overflow:auto}.prose code{color:#d1e7ff}.downloads{display:flex;gap:12px;flex-wrap:wrap}@media (max-width:980px){.author,.bookLayout,.grid{grid-template-columns:1fr}.toc{position:relative;max-height:none}}