:root{--bg:#0f172a;--card:#111827;--fg:#e5e7eb;--muted:#cbd5e1;--accent:#93c5fd;--warn:#fca5a5;--line:#334155;}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#0b1022,#111827);color:var(--fg);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}.wrap{max-width:980px;margin:0 auto;padding:48px 22px}header{padding:32px 0 18px;border-bottom:1px solid var(--line)}h1{font-size:clamp(2rem,5vw,4rem);line-height:1.05;margin:0 0 18px}h2{margin-top:36px;color:#dbeafe}.tagline{font-size:1.25rem;color:var(--muted);max-width:850px}.card{background:rgba(17,24,39,.82);border:1px solid var(--line);border-radius:16px;padding:24px;margin:22px 0}.boundary li{margin:.4rem 0}.warn{color:var(--warn);font-weight:700}.accent{color:var(--accent);font-weight:700}a{color:var(--accent)}code{background:#020617;border:1px solid #1e293b;border-radius:6px;padding:.15rem .35rem}footer{margin-top:42px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:.95rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}.mini{background:#0b1224;border:1px solid var(--line);border-radius:12px;padding:16px}blockquote{border-left:4px solid var(--accent);padding-left:18px;color:#dbeafe;margin:0}.small{font-size:.95rem;color:var(--muted)}