:root{
  --primary:#9f1239;
  --secondary:#7f1d1d;
  --accent:#eab308;
  --bg:#ffffff;
  --surface:#fff7ed;
  --surface-alt:#fef3c7;
  --text:#1e0a0f;
  --muted:#6b7280;
  --border:#fde68a;
  --row-alt:#fff7ed;
  --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--secondary);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block}

.site-header{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 100%);
  color:#fff;
  box-shadow:0 2px 10px rgba(127,29,29,.22);
}
.site-header a{color:#fff;text-decoration:none}
.header-inner{
  max-width:1120px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;gap:16px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.15rem}
.brand img{width:36px;height:36px}
nav.primary ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
nav.primary a{
  display:inline-block;padding:8px 14px;border-radius:999px;font-size:.94rem;font-weight:500;
  transition:background .18s ease;
}
nav.primary a:hover{background:rgba(255,255,255,.18)}

.hero{
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-alt) 100%);
  padding:56px 20px 40px;
  border-bottom:1px solid var(--border);
}
.hero-inner{max-width:1000px;margin:0 auto}
.hero h1{
  font-size:2.15rem;line-height:1.18;margin:0 0 14px;color:var(--secondary);
  letter-spacing:-.01em;
}
.byline{margin:0 0 18px;color:var(--muted);font-size:.94rem}
.byline strong{color:var(--secondary)}
.lede p{font-size:1.09rem;margin:.4em 0;color:var(--text)}
.cta-row{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-block;padding:12px 22px;border-radius:var(--radius);
  font-weight:600;text-decoration:none;transition:transform .12s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:#1e0a0f;box-shadow:0 4px 12px rgba(234,179,8,.35)}
.btn-primary:hover{transform:translateY(-1px);color:#1e0a0f}
.btn-ghost{background:#fff;color:var(--secondary);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface)}

main{max-width:900px;margin:0 auto;padding:36px 20px 24px}
main h2{
  margin:2.2em 0 .6em;font-size:1.55rem;color:var(--secondary);
  padding:10px 16px;background:var(--surface);
  border-left:5px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;
}
main h3{margin:1.6em 0 .4em;color:var(--secondary);font-size:1.18rem}
main p{margin:.7em 0}
main ul{padding-left:0;list-style:none}
main ul li{padding:6px 6px 6px 26px;position:relative}
main ul li::before{content:"\25B8";position:absolute;left:6px;color:var(--primary);font-weight:700}
main ol{padding-left:0;list-style:none;counter-reset:step}
main ol li{counter-increment:step;padding:8px 8px 8px 44px;position:relative;margin:6px 0}
main ol li::before{
  content:counter(step);
  position:absolute;left:0;top:6px;width:30px;height:30px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.9rem;
}

.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:.96rem;background:#fff}
th{
  background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 100%);
  color:#fff;text-align:left;padding:12px 14px;font-weight:600;
}
td{padding:11px 14px;border-top:1px solid var(--border);vertical-align:top}
tbody tr:nth-child(even){background:var(--row-alt)}

nav.toc{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 22px;margin:1.4em 0;
}
nav.toc strong{display:block;color:var(--secondary);margin-bottom:8px;font-size:1.05rem}
nav.toc ol{padding-left:0;counter-reset:toc}
nav.toc ol li{counter-increment:toc;padding:4px 6px 4px 32px;position:relative;margin:0}
nav.toc ol li::before{
  content:counter(toc);
  position:absolute;left:0;top:4px;width:24px;height:24px;border-radius:50%;
  background:var(--accent);color:#1e0a0f;font-size:.78rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
nav.toc a{color:var(--secondary)}

.callout{
  background:var(--surface);border-left:4px solid var(--primary);
  padding:14px 18px;border-radius:0 var(--radius) var(--radius) 0;margin:1.2em 0;
}
.callout strong{color:var(--secondary)}

details{
  border:1px solid var(--border);border-radius:var(--radius);
  background:#fff;margin:10px 0;padding:0;overflow:hidden;
}
details[open]{background:var(--surface)}
summary{
  padding:14px 44px 14px 18px;cursor:pointer;font-weight:600;color:var(--secondary);
  list-style:none;position:relative;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"\25BC";position:absolute;right:16px;top:14px;color:var(--primary);
  transition:transform .2s ease;font-size:.85rem;
}
details[open] summary::after{transform:rotate(180deg)}
details > p, details > ul, details > ol{padding:0 18px 14px;margin:.4em 0}

.author-box{
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-alt) 100%);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;display:flex;gap:20px;align-items:flex-start;margin:2.4em 0 1em;
}
.author-box img{width:88px;height:88px;border-radius:50%;flex-shrink:0;border:3px solid #fff;box-shadow:0 4px 12px rgba(127,29,29,.22)}
.author-box h3{margin:0 0 4px;color:var(--secondary)}
.author-box .role{color:var(--muted);font-size:.92rem;margin:0 0 8px}
.author-box p{margin:.3em 0;font-size:.95rem}

figure.inline-svg{
  margin:1.6em 0;padding:18px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
}
figure.inline-svg svg{max-width:100%;height:auto;display:block;margin:0 auto}
figure.inline-svg img{max-width:100%;height:auto;display:block;margin:0 auto}
figure.inline-svg figcaption{
  text-align:center;color:var(--muted);font-size:.9rem;margin-top:8px;
}

.site-footer{
  background:var(--secondary);color:#fde68a;
  padding:36px 20px 28px;margin-top:60px;
}
.site-footer a{color:#fef3c7}
.footer-inner{
  max-width:1120px;margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px;
}
.site-footer h3{color:#fff;margin:0 0 10px;font-size:1rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{padding:3px 0}
.footer-bottom{
  max-width:1120px;margin:24px auto 0;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.14);
  text-align:center;font-size:.86rem;color:#fde68a;
}

.legal main{max-width:780px}
.legal h1{color:var(--secondary);font-size:1.9rem;margin:1em 0 .4em}
.legal h2{
  font-size:1.32rem;margin:1.6em 0 .5em;color:var(--secondary);
  padding:8px 14px;background:var(--surface);border-left:4px solid var(--accent);
  border-radius:0 var(--radius) var(--radius) 0;
}

@media (max-width:980px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:22px}
  main{padding:28px 18px}
  .hero{padding:44px 18px 30px}
  .hero h1{font-size:1.85rem}
}
@media (max-width:700px){
  .header-inner{flex-direction:column;align-items:flex-start}
  nav.primary ul{width:100%}
  nav.primary a{padding:7px 11px;font-size:.88rem}
  .footer-inner{grid-template-columns:1fr}
  .author-box{flex-direction:column;text-align:center;align-items:center}
  main h2{font-size:1.32rem;padding:9px 13px}
  .hero h1{font-size:1.55rem}
  body{font-size:16px}
}

.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}}