:root{
  --primary:#18181b;
  --secondary:#27272a;
  --accent:#a3e635;
  --bg:#ffffff;
  --surface:#fafafa;
  --surface-alt:#f4f4f5;
  --text:#09090b;
  --muted:#71717a;
  --border:#d4d4d8;
  --row-alt:#fafafa;
  --radius:3px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
a:hover{color:var(--secondary)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:20;background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 100%);color:#fafafa;border-bottom:2px solid var(--accent)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;gap:18px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:#fafafa;text-decoration:none;font-weight:700}
.brand img{width:34px;height:34px}
.brand-name{font-size:18px;letter-spacing:.3px}
.brand-name b{color:var(--accent)}
nav.primary{display:flex;flex-wrap:wrap;gap:6px 16px}
nav.primary a{color:#fafafa;text-decoration:none;font-size:14.5px;padding:4px 2px;border-bottom:2px solid transparent}
nav.primary a:hover{border-bottom-color:var(--accent);color:var(--accent)}
.hero{background:linear-gradient(135deg,#18181b 0%,#27272a 50%,#111112 100%);color:#fafafa;padding:56px 0 44px;border-bottom:3px solid var(--accent)}
.hero h1{margin:0 0 14px;font-size:34px;line-height:1.2;letter-spacing:-.3px;color:#fafafa}
.hero .byline{color:#d4d4d8;margin:0 0 18px;font-size:14.5px}
.hero .byline strong{color:var(--accent)}
.hero .intro{font-size:17.5px;max-width:820px;color:#e4e4e7}
.hero .cta-row{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-block;padding:11px 18px;border-radius:var(--radius);text-decoration:none;font-weight:600;font-size:14.5px;border:1px solid transparent;transition:transform .06s ease}
.btn.primary{background:var(--accent);color:var(--primary)}
.btn.primary:hover{transform:translateY(-1px);color:var(--primary)}
.btn.ghost{border-color:var(--accent);color:var(--accent);background:transparent}
.btn.ghost:hover{background:var(--accent);color:var(--primary)}
main{padding:36px 0 60px}
main h2{font-size:26px;margin:44px 0 14px;padding:10px 14px;background:var(--surface-alt);border-left:4px solid var(--accent);border-radius:var(--radius);color:var(--primary);line-height:1.25}
main h3{font-size:19px;margin:26px 0 10px;color:var(--primary)}
main p{margin:0 0 14px}
main ul,main ol{padding-left:0;margin:0 0 18px;list-style:none}
main ul li,main ol li{position:relative;padding:6px 0 6px 30px}
main ul li:before{content:"▸";position:absolute;left:8px;color:var(--accent);font-weight:700}
main ol{counter-reset:step}
main ol li{counter-increment:step;padding-left:38px}
main ol li:before{content:counter(step);position:absolute;left:0;top:6px;width:26px;height:26px;border-radius:50%;background:var(--primary);color:var(--accent);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.toc{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin:22px 0 30px}
.toc h2, .toc strong{margin:0 0 8px;font-size:15px;color:var(--muted);text-transform:uppercase;letter-spacing:.8px;background:none;border:none;padding:0;display:block}
.toc ol{margin:0;columns:2;column-gap:28px}
.toc ol li{padding:3px 0 3px 30px;font-size:14.5px}
.toc ol li:before{width:22px;height:22px;font-size:11.5px;top:4px}
.toc a{text-decoration:none;color:var(--primary)}
.toc a:hover{color:var(--secondary);text-decoration:underline}
.table-wrap{overflow-x:auto;margin:16px 0 22px;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:var(--bg)}
th,td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--border)}
thead th{background:linear-gradient(90deg,var(--primary),var(--secondary));color:var(--accent);font-weight:700;letter-spacing:.2px}
tbody tr:nth-child(even){background:var(--row-alt)}
tbody tr:hover{background:#eef7cf}
figure{margin:22px 0;padding:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
figcaption{margin-top:10px;color:var(--muted);font-size:13.5px;text-align:center}
details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin:0 0 10px;padding:0}
details>summary{list-style:none;cursor:pointer;padding:14px 44px 14px 16px;font-weight:600;position:relative;color:var(--primary)}
details>summary::-webkit-details-marker{display:none}
details>summary:after{content:"▼";position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--accent);transition:transform .2s ease;font-size:12px}
details[open]>summary:after{transform:translateY(-50%) rotate(180deg)}
details>div,details>p{padding:0 16px 14px}
.author-box{margin:44px 0 12px;padding:20px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fafafa;border-radius:var(--radius);border:1px solid var(--accent);display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap}
.author-box img{width:82px;height:82px;border-radius:50%;border:2px solid var(--accent);background:#fff}
.author-box .who{flex:1;min-width:220px}
.author-box .who h3{margin:0 0 4px;color:var(--accent);font-size:18px}
.author-box .who p{margin:0 0 6px;color:#e4e4e7;font-size:14.5px}
.author-box .who .role{color:var(--accent);font-size:13px;text-transform:uppercase;letter-spacing:.6px}
.callout{background:var(--surface-alt);border-left:4px solid var(--accent);padding:14px 16px;margin:18px 0;border-radius:var(--radius)}
.callout strong{color:var(--primary)}
.warn{background:#fef9c3;border-left:4px solid #ca8a04;padding:14px 16px;margin:18px 0;border-radius:var(--radius)}
code,kbd{font-family:var(--mono);background:var(--surface-alt);padding:1px 6px;border-radius:2px;font-size:.92em;color:var(--primary)}
pre{background:var(--primary);color:#fafafa;padding:14px 16px;border-radius:var(--radius);overflow-x:auto;font-size:13px}
pre code{background:transparent;color:#fafafa;padding:0}
.site-footer{background:var(--primary);color:#d4d4d8;padding:32px 0;margin-top:30px;font-size:14px}
.site-footer a{color:var(--accent)}
.site-footer .container{display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between}
.site-footer .col{flex:1;min-width:220px}
.site-footer h3{margin:0 0 10px;color:#fafafa;font-size:15px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{padding:3px 0}
.footnote{color:var(--muted);font-size:13px;padding-top:20px;border-top:1px solid #3f3f46;margin-top:22px;width:100%}
@media (max-width:980px){.hero h1{font-size:28px}.toc ol{columns:1}main h2{font-size:22px}}
@media (max-width:700px){.hero{padding:38px 0 28px}.hero h1{font-size:24px}.hero .intro{font-size:15.5px}main h2{font-size:20px;padding:8px 10px}.site-header .container{padding:10px 16px}.brand-name{font-size:16px}}

/* a11y additions */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:4px;z-index:1000;text-decoration:none;font-weight:700}
.skip-link:focus{left:12px;top:12px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion: reduce){*,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}}