/* ============================================================
   Design tokens
   ============================================================ */
:root{
  --ink:#1B2A4A;
  --ink-soft:#33456B;
  --paper:#EFE9DD;
  --paper-light:#FAF7F1;
  --brick:#B5482A;
  --brick-soft:#E7D3C8;
  --sage:#4F6B52;
  --sage-soft:#DCE5D9;
  --charcoal:#2B2B28;
  --rule:#D8D0BF;
  --rule-strong:#BDB39C;

  --font-display: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;

  --max-width: 1180px;
  --content-width: 760px;
  --radius: 3px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--paper);
  color:var(--charcoal);
  font-family:var(--font-body);
  line-height:1.65;
  font-size:17px;
}

img{ max-width:100%; display:block; }

.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--ink); color:#fff; padding:10px 16px;
  z-index:200; border-radius:0 0 var(--radius) 0;
}
.skip-link:focus{ left:0; }

a{ color:var(--brick); text-decoration-thickness:1px; }
a:hover{ color:var(--ink); }
a:focus-visible, button:focus-visible, input:focus-visible{
  outline:3px solid var(--ink); outline-offset:2px;
}

/* ============================================================
   Header
   ============================================================ */
.site-header{
  background:var(--paper-light);
  border-bottom:1px solid var(--rule);
  position:sticky; top:0; z-index:100;
}
.header-inner{
  max-width:var(--max-width); margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 24px;
}
.brand{ display:flex; align-items:center; gap:8px; text-decoration:none; color:var(--ink); }
.brand-mark{
  font-family:var(--font-display); font-size:1.5rem; color:var(--brick);
}
.brand-name{ font-family:var(--font-display); font-weight:700; font-size:1.15rem; }

.top-nav{ display:flex; align-items:center; gap:22px; }
.top-nav a{ color:var(--ink); text-decoration:none; font-size:0.95rem; }
.top-nav a:hover{ color:var(--brick); }
.nav-cta{
  background:var(--ink); color:#fff !important; padding:8px 16px;
  border-radius:var(--radius);
}
.nav-cta:hover{ background:var(--brick); }

.menu-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none;
  cursor:pointer; padding:8px;
}
.menu-toggle span{ width:22px; height:2px; background:var(--ink); display:block; }

.mobile-nav{
  display:none; flex-direction:column; background:var(--paper-light);
  border-top:1px solid var(--rule); padding:10px 24px 18px;
}
.mobile-nav a{ padding:10px 0; color:var(--ink); text-decoration:none; border-bottom:1px solid var(--rule); }
.mobile-nav.open{ display:flex; }

@media (max-width:800px){
  .top-nav{ display:none; }
  .menu-toggle{ display:flex; }
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb{ max-width:var(--max-width); margin:0 auto; padding:14px 24px 0; }
.breadcrumb ol{ list-style:none; display:flex; flex-wrap:wrap; gap:6px; margin:0; padding:0; font-size:0.85rem; color:var(--ink-soft); }
.breadcrumb li:not(:last-child)::after{ content:"/"; margin-left:6px; color:var(--rule-strong); }
.breadcrumb a{ color:var(--ink-soft); text-decoration:none; }
.breadcrumb a:hover{ color:var(--brick); }
.breadcrumb li[aria-current]{ color:var(--charcoal); font-weight:600; }

/* ============================================================
   Hero
   ============================================================ */
.hero{ padding:48px 24px 40px; }
.hero-inner{ max-width:var(--content-width); margin:0 auto; }
.eyebrow{
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.08em;
  font-size:0.78rem; color:var(--brick); margin:0 0 10px;
}
h1{
  font-family:var(--font-display); font-size:2.35rem; line-height:1.18;
  color:var(--ink); margin:0 0 16px; font-weight:700;
}
.hero-sub{ font-size:1.08rem; color:var(--ink-soft); max-width:64ch; }

.hero-meta{ display:flex; flex-wrap:wrap; gap:10px; margin:18px 0; }
.meta-pill{
  background:var(--paper-light); border:1px solid var(--rule);
  padding:6px 12px; border-radius:20px; font-size:0.85rem; color:var(--ink-soft);
}

.markup-demo{
  background:var(--paper-light); border:1px solid var(--rule); border-left:4px solid var(--brick);
  border-radius:var(--radius); padding:20px 22px; margin:26px 0; position:relative;
  font-family:var(--font-mono); font-size:0.95rem;
}
.markup-line{ margin:0 0 8px; }
.markup-label{
  position:absolute; top:-11px; right:14px; background:var(--ink); color:#fff;
  font-family:var(--font-body); font-size:0.7rem; padding:3px 10px; border-radius:12px;
  letter-spacing:0.03em;
}

.del{ color:var(--brick); text-decoration:line-through; text-decoration-color:var(--brick); }
.ins{ color:var(--sage); text-decoration:underline; text-decoration-style:solid; text-decoration-color:var(--sage); }

.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:24px; }
.btn{
  display:inline-block; padding:12px 22px; border-radius:var(--radius);
  text-decoration:none; font-weight:600; font-size:0.98rem; border:2px solid transparent;
  cursor:pointer;
}
.btn-primary{ background:var(--brick); color:#fff; }
.btn-primary:hover{ background:#983a20; color:#fff; }
.btn-ghost{ background:transparent; border-color:var(--ink); color:var(--ink); }
.btn-ghost:hover{ background:var(--ink); color:#fff; }
.btn-large{ font-size:1.05rem; padding:14px 28px; }

/* ============================================================
   Layout
   ============================================================ */
.layout{
  max-width:var(--max-width); margin:0 auto; padding:0 24px 60px;
  display:grid; grid-template-columns:230px 1fr; gap:48px; align-items:start;
}
@media (max-width:900px){
  .layout{ grid-template-columns:1fr; }
}

.toc-rail{ position:sticky; top:78px; }
@media (max-width:900px){ .toc-rail{ position:static; } }

.toc{
  background:var(--paper-light); border:1px solid var(--rule); border-radius:var(--radius);
  padding:18px 20px;
}
.toc-title{
  font-family:var(--font-mono); font-size:0.75rem; text-transform:uppercase;
  letter-spacing:0.08em; color:var(--brick); margin:0 0 10px;
}
.toc ol{ list-style:none; margin:0; padding:0; counter-reset:toc; }
.toc li{ counter-increment:toc; margin-bottom:8px; font-size:0.9rem; }
.toc li a{
  color:var(--ink-soft); text-decoration:none; display:flex; gap:8px;
}
.toc li a::before{
  content:counter(toc, decimal-leading-zero); font-family:var(--font-mono);
  color:var(--rule-strong); flex-shrink:0;
}
.toc li a:hover, .toc li a.active{ color:var(--brick); }

.content{ max-width:var(--content-width); }

/* ============================================================
   Typography for content
   ============================================================ */
.section{ margin-bottom:44px; scroll-margin-top:90px; }
h2{
  font-family:var(--font-display); font-size:1.65rem; color:var(--ink);
  border-bottom:2px solid var(--rule); padding-bottom:10px; margin:0 0 18px;
  scroll-margin-top:90px;
}
h3{ font-family:var(--font-display); font-size:1.25rem; color:var(--ink); margin:28px 0 12px; }
p{ margin:0 0 16px; }
ul, ol{ margin:0 0 16px; padding-left:1.3em; }
li{ margin-bottom:8px; }

.snippet-answer{
  background:var(--paper-light); border-left:4px solid var(--ink);
  padding:14px 18px; border-radius:0 var(--radius) var(--radius) 0;
}

/* Callouts */
.callout{
  border-radius:var(--radius); padding:18px 20px; margin:20px 0; border:1px solid var(--rule);
}
.callout-title{
  font-family:var(--font-mono); text-transform:uppercase; font-size:0.75rem;
  letter-spacing:0.07em; margin:0 0 8px; font-weight:700;
}
.callout p:last-child{ margin-bottom:0; }
.callout-summary{ background:var(--paper-light); border-color:var(--rule); }
.callout-summary .callout-title{ color:var(--ink); }
.callout-tip{ background:var(--sage-soft); border-color:var(--sage); }
.callout-tip .callout-title{ color:var(--sage); }
.callout-warning{ background:var(--brick-soft); border-color:var(--brick); }
.callout-warning .callout-title{ color:var(--brick); }

/* Tables */
.table-wrap{ overflow-x:auto; margin:20px 0 26px; border:1px solid var(--rule); border-radius:var(--radius); }
table{ width:100%; border-collapse:collapse; font-size:0.94rem; background:var(--paper-light); }
caption{
  text-align:left; font-family:var(--font-mono); font-size:0.78rem; text-transform:uppercase;
  letter-spacing:0.06em; color:var(--ink-soft); padding:12px 16px; border-bottom:1px solid var(--rule);
  background:var(--paper);
}
thead th{
  background:var(--ink); color:#fff; text-align:left; padding:10px 16px; font-weight:600;
}
tbody th, tbody td{ padding:10px 16px; border-bottom:1px solid var(--rule); text-align:left; vertical-align:top; }
tbody tr:last-child th, tbody tr:last-child td{ border-bottom:none; }
tbody th{ background:var(--paper); font-weight:600; color:var(--ink); white-space:nowrap; }

/* Workflow numbered list */
.workflow-list{ counter-reset:wf; list-style:none; padding-left:0; }
.workflow-list li{
  position:relative; padding-left:44px; margin-bottom:16px;
}
.workflow-list li::before{
  counter-increment:wf; content:counter(wf);
  position:absolute; left:0; top:0; width:30px; height:30px; border-radius:50%;
  background:var(--ink); color:#fff; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:0.85rem;
}

.myth-list li{ margin-bottom:14px; }

/* Example / markup boxes */
.example-box{
  position:relative; background:var(--paper-light); border:1px solid var(--rule);
  border-left:4px solid var(--ink); border-radius:0 var(--radius) var(--radius) 0;
  padding:18px 20px; margin:18px 0; font-family:var(--font-mono); font-size:0.92rem;
}
.example-label{
  font-family:var(--font-body); font-weight:700; color:var(--ink-soft);
  font-size:0.8rem; text-transform:uppercase; letter-spacing:0.05em; margin-bottom:10px;
}
.copy-btn{
  position:absolute; top:14px; right:14px; background:var(--paper); border:1px solid var(--rule-strong);
  color:var(--ink-soft); font-family:var(--font-body); font-size:0.75rem; padding:5px 10px;
  border-radius:16px; cursor:pointer;
}
.copy-btn:hover{ background:var(--ink); color:#fff; border-color:var(--ink); }
.copy-btn.copied{ background:var(--sage); color:#fff; border-color:var(--sage); }

/* Checklists */
.checklist{ list-style:none; padding-left:0; }
.checklist li{
  padding-left:30px; position:relative; margin-bottom:10px;
}
.checklist li::before{
  content:""; position:absolute; left:0; top:3px; width:18px; height:18px;
  border:2px solid var(--sage); border-radius:4px; background:var(--paper-light);
}

/* FAQ */
.faq-item{
  border-bottom:1px solid var(--rule); padding:16px 0;
}
.faq-item h3{ margin:0 0 8px; font-size:1.05rem; }
.faq-item p{ margin-bottom:0; color:var(--charcoal); }

.references ul{ list-style:none; padding-left:0; }
.references li{ margin-bottom:8px; }

/* CTA */
.cta-section{
  background:var(--ink); color:#fff; padding:40px 32px; border-radius:var(--radius);
  text-align:center; margin-top:50px;
}
.cta-section h2{ color:#fff; border-bottom:none; }
.cta-section p{ color:#DCE1EC; max-width:56ch; margin-left:auto; margin-right:auto; }
.cta-links{ margin-top:16px; font-size:0.9rem; }
.cta-links a{ color:#F2C9B8; }

/* Footer */
.site-footer{
  border-top:1px solid var(--rule); padding:26px 24px; text-align:center;
  font-size:0.85rem; color:var(--ink-soft);
}
.site-footer a{ color:var(--ink-soft); }
.site-footer p{ margin:4px 0; }

/* Back to top */
.back-to-top{
  position:fixed; bottom:24px; right:24px; width:44px; height:44px; border-radius:50%;
  background:var(--ink); color:#fff; border:none; font-size:1.2rem; cursor:pointer;
  display:none; align-items:center; justify-content:center; box-shadow:0 2px 10px rgba(0,0,0,0.25);
  z-index:90;
}
.back-to-top.visible{ display:flex; }
.back-to-top:hover{ background:var(--brick); }

/* Responsive */
@media (max-width:600px){
  h1{ font-size:1.7rem; }
  .hero{ padding:32px 18px 28px; }
  .layout{ padding:0 18px 40px; }
  table{ font-size:0.86rem; }
}

/* Print */
@media print{
  .site-header, .breadcrumb, .toc-rail, .back-to-top, .menu-toggle, .hero-actions{ display:none !important; }
  body{ background:#fff; }
  .layout{ display:block; }
  a{ color:var(--charcoal); text-decoration:underline; }
}