/* Shared styles for guide pages. Matches the homepage: Open Sans, black on white, rules instead of colour. */
:root{
  --black:#0A0A0A;
  --white:#FFFFFF;
  --off:#F7F7F5;
  --gray-1:#5F5F5F;
  --gray-2:#B8B8B8;
  --line:#E2E2E0;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--white);
  color:var(--black);
  font-family:'Open Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--black); color:var(--white); }
a{ color:inherit; }
img{ max-width:100%; height:auto; }

.wrap{ max-width:1160px; margin:0 auto; padding:0 32px; }
.narrow{ max-width:760px; margin:0 auto; padding:0 32px; }
@media (max-width:640px){ .wrap, .narrow{ padding:0 20px; } body{ font-size:16px; } }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-nav{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding-top:18px; padding-bottom:18px; }
.brand{
  font-weight:800; font-size:1.1rem; letter-spacing:-0.01em;
  display:flex; align-items:center; gap:9px; text-decoration:none; white-space:nowrap;
}
.brand .mark{ width:9px; height:9px; background:var(--black); display:inline-block; }
.nav-right{ display:flex; align-items:center; gap:24px; }
.nav-link{ font-size:0.92rem; font-weight:600; color:var(--gray-1); text-decoration:none; }
.nav-link:hover, .nav-link[aria-current="page"]{ color:var(--black); }
.nav-cta{
  padding:9px 18px; background:var(--black); color:var(--white);
  font-size:0.86rem; font-weight:700; text-decoration:none; white-space:nowrap;
  border:none; cursor:pointer; font-family:inherit;
}
.nav-cta:hover{ opacity:0.8; }
@media (max-width:420px){
  .nav-link.home-link{ display:none; }
  .site-nav{ gap:10px; }
  .nav-right{ gap:12px; }
  .brand{ font-size:0.95rem; gap:7px; }
  .nav-cta{ padding:8px 10px; font-size:0.8rem; }
}
a:focus-visible, button:focus-visible, summary:focus-visible{ outline:2px solid var(--black); outline-offset:3px; }

/* ---------- Breadcrumb ---------- */
.crumbs{ font-size:0.82rem; color:var(--gray-1); padding-top:40px; }
.crumbs ol{ list-style:none; display:flex; flex-wrap:wrap; gap:6px; }
.crumbs li+li::before{ content:"/"; margin-right:6px; color:var(--gray-2); }
.crumbs a{ text-decoration:none; }
.crumbs a:hover{ text-decoration:underline; }

/* ---------- Article ---------- */
.article-head{ padding:24px 0 36px; border-bottom:1.5px solid var(--black); margin-bottom:40px; }
.eyebrow{
  font-size:0.78rem; font-weight:700; letter-spacing:0.12em; text-transform:uppercase;
  color:var(--gray-1); margin-bottom:18px; display:flex; align-items:center; gap:10px;
}
.eyebrow::before{ content:""; width:24px; height:2px; background:var(--black); display:inline-block; }
.article-head h1{
  font-weight:800; font-size:clamp(2rem, 4.2vw, 2.9rem); line-height:1.12;
  letter-spacing:-0.02em; margin-bottom:18px;
}
.dek{ font-size:1.12rem; color:var(--gray-1); max-width:60ch; }
.meta{ margin-top:20px; font-size:0.82rem; color:var(--gray-1); font-weight:600; }

.answer{
  background:var(--off); border-left:4px solid var(--black);
  padding:22px 26px; margin-bottom:44px;
}
.answer .label{ font-size:0.74rem; font-weight:800; letter-spacing:0.1em; text-transform:uppercase; margin-bottom:8px; }
.answer p{ font-size:1.02rem; }

.prose h2{
  font-size:clamp(1.4rem, 2.4vw, 1.75rem); font-weight:800; letter-spacing:-0.015em;
  line-height:1.25; margin:52px 0 16px;
}
.prose h3{ font-size:1.12rem; font-weight:700; margin:32px 0 10px; line-height:1.35; }
.prose p{ margin-bottom:18px; }
.prose ul, .prose ol{ margin:0 0 22px 1.3em; }
.prose li{ margin-bottom:10px; padding-left:4px; }
.prose strong{ font-weight:700; }
.prose a{ text-decoration:underline; text-underline-offset:3px; text-decoration-thickness:1px; }
.prose a:hover{ text-decoration-thickness:2px; }

/* Numbered question blocks (checklist page) */
.q{ border-top:1px solid var(--line); padding:28px 0 8px; }
.q:first-of-type{ border-top:1.5px solid var(--black); }
.q h2{ margin:0 0 12px; display:grid; grid-template-columns:48px 1fr; gap:4px; }
.q h2 .n{ color:var(--gray-2); font-weight:800; }
.q .signals{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); margin:6px 0 22px; }
.q .signals div{ background:var(--white); padding:16px 18px; font-size:0.94rem; }
.q .signals .k{ display:block; font-size:0.72rem; font-weight:800; letter-spacing:0.08em; text-transform:uppercase; margin-bottom:6px; }
.q .signals .bad .k{ color:var(--gray-1); }
@media (max-width:640px){ .q .signals{ grid-template-columns:1fr; } .q h2{ grid-template-columns:40px 1fr; } }

/* Tables */
.table-wrap{ overflow-x:auto; margin:8px 0 28px; border:1px solid var(--line); }
table{ border-collapse:collapse; width:100%; min-width:560px; font-size:0.92rem; }
th, td{ text-align:left; vertical-align:top; padding:12px 14px; border-bottom:1px solid var(--line); }
th{ background:var(--off); font-weight:700; font-size:0.84rem; }
tr:last-child td{ border-bottom:none; }

/* Inline callout */
.callout{
  border:1.5px solid var(--black); padding:24px 26px; margin:40px 0;
  display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap;
}
.callout p{ margin:0; font-weight:600; max-width:44ch; }

.btn{
  display:inline-block; background:var(--black); color:var(--white);
  padding:14px 24px; font-weight:700; font-size:0.95rem; text-decoration:none;
  border:1.5px solid var(--black); cursor:pointer; font-family:inherit;
}
.btn:hover{ opacity:0.8; }
.btn-outline{ background:var(--white); color:var(--black); }

/* End CTA */
.end-cta{ background:var(--black); color:var(--white); padding:56px 0; margin-top:64px; }
.end-cta h2{ font-size:clamp(1.5rem, 3vw, 2rem); font-weight:800; letter-spacing:-0.015em; line-height:1.2; margin-bottom:12px; max-width:22ch; }
.end-cta p{ color:var(--gray-2); max-width:56ch; margin-bottom:26px; }
.end-cta .btn{ background:var(--white); color:var(--black); border-color:var(--white); }

/* Author + related */
.author{ display:grid; grid-template-columns:44px 1fr; gap:16px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:24px 0; margin:56px 0 0; font-size:0.94rem; color:var(--gray-1); }
.author .badge{ width:44px; height:44px; background:var(--black); display:flex; align-items:center; justify-content:center; }
.author .badge span{ width:10px; height:10px; background:var(--white); display:block; }
.author strong{ color:var(--black); display:block; margin-bottom:2px; }

.related{ margin:48px 0 0; }
.related h2{ font-size:1rem; font-weight:800; text-transform:uppercase; letter-spacing:0.08em; margin-bottom:8px; }
.related ul{ list-style:none; margin:0; }
.related li{ border-top:1px solid var(--line); }
.related li:last-child{ border-bottom:1px solid var(--line); }
.related a{ display:block; padding:14px 0; text-decoration:none; font-weight:600; }
.related a:hover{ text-decoration:underline; }
.related a::after{ content:" \2192"; }

/* Guides index cards */
.guide-list{ list-style:none; border-top:1.5px solid var(--black); margin:0; }
.guide-list li{ border-bottom:1px solid var(--line); }
.guide-list a{ display:grid; grid-template-columns:56px 1fr; gap:20px; padding:28px 0; text-decoration:none; }
.guide-list .n{ font-weight:800; color:var(--gray-2); }
.guide-list h2{ font-size:1.25rem; font-weight:800; letter-spacing:-0.01em; line-height:1.3; margin-bottom:6px; }
.guide-list p{ color:var(--gray-1); font-size:0.96rem; }
.guide-list a:hover h2{ text-decoration:underline; text-underline-offset:3px; }
@media (max-width:640px){ .guide-list a{ grid-template-columns:36px 1fr; gap:12px; } }

/* ---------- Footer ---------- */
.site-footer{ border-top:1px solid var(--line); padding:40px 0; font-size:0.86rem; color:var(--gray-1); }
.end-cta + .site-footer{ border-top:none; }
.footer-grid{ display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; align-items:flex-start; }
.footer-links{ display:flex; gap:20px; flex-wrap:wrap; }
.footer-links a{ text-decoration:none; font-weight:600; }
.footer-links a:hover{ color:var(--black); text-decoration:underline; }

@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }