/* ═══════════════════════════════════════════════════════════════
   TULQ — content page design system

   Shared by every generated page: pillars, IHS Area pages, resources
   posts, and comparison pages. One cached request instead of ~12 KB of
   inline CSS repeated across three dozen documents.

   Palette and type match story.html so the new pages read as part of
   the same site rather than a bolted-on blog.
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg: #f5f1ea;
  --bg-card: #fbf8f2;
  --bg-sink: #f0ebe1;
  --ink: #1f2a2a;
  --ink-soft: #4a5555;
  --ink-mute: #8a9292;
  --rule: #e6dfd3;
  --rule-soft: #eee7da;
  --teal: #1f8a7a;
  --teal-deep: #0f5f53;
  --teal-wash: #d7ece6;
  --teal-tint: #eaf4f1;
  --amber: #d98a4a;
  --amber-wash: #f5e2cf;
  --basalt: #1c2628;
  --fog: #e8e4d8;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 0 rgba(31, 42, 42, .04), 0 1px 2px rgba(31, 42, 42, .04);
  --shadow-md: 0 1px 0 rgba(31, 42, 42, .04), 0 6px 20px -8px rgba(31, 42, 42, .18);
  --shadow-lg: 0 1px 0 rgba(31, 42, 42, .04), 0 30px 60px -30px rgba(31, 42, 42, .35);
  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 15% -5%, rgba(31, 138, 122, .07), transparent 45%),
    radial-gradient(circle at 95% 8%, rgba(217, 138, 74, .06), transparent 40%);
  background-attachment: fixed;
}

a { color: var(--teal-deep); text-decoration: none; }
a:hover { color: var(--teal); }

::selection { background: var(--teal-wash); color: var(--ink); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--basalt); color: var(--fog);
  padding: 12px 20px; border-radius: 0 0 10px 0;
  font-size: 14px; font-weight: 500;
}
.skip-link:focus { left: 0; color: var(--fog); }

/* ── Nav ─────────────────────────────────────────────────────── */
.nav-wrap {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(245, 241, 234, .82);
  border-bottom: 1px solid var(--rule-soft);
}
.nav {
  max-width: 1180px; margin: 0 auto; padding: 16px 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 11px;
  font-family: var(--font-serif); font-size: 22px;
  color: var(--ink); letter-spacing: -0.01em;
}
.brand-logo { width: 32px; height: 32px; flex: none; object-fit: contain; display: block; }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  color: var(--ink-soft); padding: 8px 13px;
  border-radius: 999px; font-size: 13.5px; font-weight: 500;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--ink); background: var(--teal-tint); }
.nav-links a[aria-current="page"] { color: var(--teal-deep); background: var(--teal-tint); }
.nav-cta {
  background: var(--ink); color: #fbf8f2; padding: 10px 18px;
  border-radius: 999px; font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap;
  box-shadow: var(--shadow-md);
  transition: transform .15s, box-shadow .15s, background .15s;
}
.nav-cta:hover {
  transform: translateY(-1px); box-shadow: var(--shadow-lg);
  background: var(--teal-deep); color: #fbf8f2;
}
.nav-cta .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal); box-shadow: 0 0 0 4px rgba(31, 138, 122, .25);
}
@media (max-width: 900px) { .nav-links { display: none; } }

/* ── Page shell ──────────────────────────────────────────────── */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.article-wrap { max-width: 780px; margin: 0 auto; padding: 44px 28px 110px; }
.wide-wrap { max-width: 1080px; margin: 0 auto; padding: 44px 28px 110px; }

.crumbs {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-mute); margin-bottom: 26px;
}
.crumbs a { color: var(--ink-mute); }
.crumbs a:hover { color: var(--teal-deep); }
.crumbs span[aria-current] { color: var(--ink-soft); }
.crumbs .sep { opacity: .5; }

.eyebrow {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--teal-deep);
  background: var(--teal-tint); padding: 7px 14px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 9px;
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--teal);
}

h1.display {
  font-family: var(--font-serif);
  font-size: clamp(38px, 5.4vw, 62px);
  line-height: 1.04; letter-spacing: -0.022em;
  font-weight: 400; margin: 20px 0 22px; color: var(--ink);
}
h1.display em { font-style: italic; color: var(--teal-deep); }

.deck {
  font-family: var(--font-serif); font-style: italic;
  font-size: clamp(19px, 2.1vw, 23px); line-height: 1.42;
  color: var(--ink-soft); margin: 0 0 34px;
}

.byline {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  padding: 16px 0 0; margin: 0 0 44px;
  border-top: 1px solid var(--rule-soft);
  font-size: 13px; color: var(--ink-mute);
}
.byline strong { color: var(--ink-soft); font-weight: 600; }
.byline .byline-tag {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .11em; text-transform: uppercase;
}

/* ── Prose ───────────────────────────────────────────────────── */
.prose { font-size: 17px; line-height: 1.72; color: var(--ink); }
.prose > p { margin: 0 0 22px; }
.prose strong { font-weight: 600; }
.prose em { font-style: italic; }
.prose a { border-bottom: 1px solid rgba(15, 95, 83, .3); }
.prose a:hover { border-bottom-color: var(--teal); }

.prose h2 {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(28px, 3.4vw, 38px); line-height: 1.14;
  letter-spacing: -0.015em; color: var(--ink);
  margin: 56px 0 18px;
}
.prose h2 em { font-style: italic; color: var(--teal-deep); }
.prose h3 {
  font-family: var(--font-sans); font-weight: 600;
  font-size: 19px; line-height: 1.35; letter-spacing: -0.01em;
  color: var(--ink); margin: 38px 0 12px;
}
.prose h4 {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-mute); margin: 32px 0 10px;
}

.prose ul, .prose ol { margin: 0 0 24px; padding-left: 22px; }
.prose li { margin: 0 0 10px; padding-left: 4px; }
.prose li::marker { color: var(--teal); }

.prose blockquote {
  margin: 32px 0; padding: 4px 0 4px 24px;
  border-left: 3px solid var(--amber);
  font-family: var(--font-serif); font-style: italic;
  font-size: 21px; line-height: 1.42; color: var(--ink);
}

.lush { font-family: var(--font-serif); font-style: italic; color: var(--teal-deep); }

hr.rule { border: 0; border-top: 1px solid var(--rule); margin: 48px 0; }

/* ── Callout ─────────────────────────────────────────────────── */
.callout {
  background: var(--bg-card); border: 1px solid var(--rule);
  border-radius: var(--radius-lg); padding: 26px 28px; margin: 32px 0;
}
.callout--teal { background: var(--teal-tint); border-color: var(--teal-wash); }
.callout--amber { background: #fdf4ea; border-color: var(--amber-wash); }
.callout-head {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .13em;
  text-transform: uppercase; color: var(--ink-mute); margin: 0 0 10px;
}
.callout p { margin: 0 0 12px; font-size: 16px; line-height: 1.65; }
.callout p:last-child { margin-bottom: 0; }
.callout ul { margin: 0; padding-left: 20px; font-size: 16px; }

/* ── Stat strip ──────────────────────────────────────────────── */
.stat-strip {
  display: grid; gap: 1px; margin: 36px 0;
  background: var(--rule); border: 1px solid var(--rule);
  border-radius: var(--radius-lg); overflow: hidden;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.stat {
  background: var(--bg-card); padding: 24px 22px;
}
.stat-num {
  font-family: var(--font-serif); font-size: 38px; line-height: 1;
  color: var(--teal-deep); letter-spacing: -0.02em;
}
.stat-label {
  margin-top: 10px; font-size: 13.5px; line-height: 1.5; color: var(--ink-soft);
}
.stat-src {
  margin-top: 10px; font-family: var(--font-mono); font-size: 10px;
  letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute);
}

/* ── Data table ──────────────────────────────────────────────── */
.table-scroll { overflow-x: auto; margin: 32px 0; -webkit-overflow-scrolling: touch; }
table.data {
  width: 100%; min-width: 560px; border-collapse: collapse;
  font-size: 15px; background: var(--bg-card);
  border: 1px solid var(--rule); border-radius: var(--radius-md);
}
table.data th, table.data td {
  text-align: left; padding: 13px 16px;
  border-bottom: 1px solid var(--rule-soft); vertical-align: top;
}
table.data thead th {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-mute); background: var(--bg-sink);
  border-bottom: 1px solid var(--rule);
}
table.data tbody tr:last-child td { border-bottom: 0; }
table.data td:first-child { font-weight: 500; color: var(--ink); }
.tick { color: var(--teal-deep); font-weight: 600; }
.cross { color: var(--ink-mute); }

/* ══════════════════════════════════════════════════════════
   FAQ — editorial accordion.

   Native <details>/<summary> so every answer stays in the DOM,
   crawlable, and matched 1:1 by the FAQPage schema. Each item is a
   card that lifts on hover and gains a teal spine when open; the
   mono numbering echoes the "Pillar 01" treatment used elsewhere.
   ══════════════════════════════════════════════════════════ */
.faq-list {
  max-width: 860px;
  margin: 44px 0 0;
  display: grid;
  gap: 12px;
  counter-reset: faq;
}

.faq-item {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 18px;
  overflow: hidden;
  transition: border-color .28s ease, box-shadow .28s ease, transform .28s ease;
}
.faq-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-deep) 100%);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .34s cubic-bezier(.2, .9, .25, 1);
}
.faq-item:hover {
  border-color: #d8cfc0;
  box-shadow: 0 10px 30px -22px rgba(31, 42, 42, .5);
}
.faq-item[open] {
  border-color: var(--teal-wash);
  background: #fffdf8;
  box-shadow: 0 20px 46px -30px rgba(31, 42, 42, .45);
}
.faq-item[open]::before { transform: scaleY(1); }

.faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 26px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  transition: color .18s ease;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::marker { content: ""; }
.faq-item > summary:hover { color: var(--teal-deep); }
.faq-item > summary:focus-visible {
  outline: 2px solid var(--teal-deep);
  outline-offset: -4px;
  border-radius: 18px;
}

/* 01, 02, 03 … in mono, matching the Pillar/Chapter treatment */
.faq-item > summary::before {
  counter-increment: faq;
  content: counter(faq, decimal-leading-zero);
  flex: none;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber);
  transition: color .18s ease;
}
.faq-item[open] > summary::before { color: var(--teal-deep); }

.faq-q {
  flex: 1;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(19px, 1.9vw, 24px);
  line-height: 1.26;
  letter-spacing: -0.012em;
}

.faq-sign {
  flex: none;
  width: 28px; height: 28px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background: transparent;
  display: grid; place-items: center;
  position: relative;
  transition: background .22s ease, border-color .22s ease;
}
.faq-item:hover .faq-sign { border-color: #cfc5b4; }
.faq-sign::before,
.faq-sign::after {
  content: "";
  position: absolute;
  background: var(--ink-soft);
  border-radius: 2px;
  transition: opacity .22s ease, background .22s ease, transform .3s cubic-bezier(.2,.9,.25,1);
}
.faq-sign::before { width: 11px; height: 1.5px; }
.faq-sign::after  { width: 1.5px; height: 11px; }
.faq-item[open] > summary .faq-sign {
  background: var(--teal-deep);
  border-color: var(--teal-deep);
}
.faq-item[open] > summary .faq-sign::before { background: #fbf8f2; }
.faq-item[open] > summary .faq-sign::after  { opacity: 0; transform: rotate(90deg); }

.faq-answer {
  padding: 0 26px 24px 55px;
  color: var(--ink-soft);
  font-size: 16.5px;
  line-height: 1.7;
}
.faq-answer p { margin: 0 0 14px; }
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer a {
  color: var(--teal-deep);
  border-bottom: 1px solid rgba(15, 95, 83, .3);
}
.faq-answer a:hover { border-bottom-color: var(--teal-deep); }

.faq-source {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--teal-tint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--teal-deep);
}

/* Reveal on open. Safe as an opacity animation: it only runs on user
   interaction, never on first paint, so a slow stylesheet can never
   leave a reader staring at an invisible answer. */
@keyframes faqReveal {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}
.faq-item[open] > .faq-answer { animation: faqReveal .3s cubic-bezier(.2, .9, .25, 1) both; }

/* True height animation where the browser supports it. */
@supports selector(:open) and (interpolate-size: allow-keywords) {
  :root { interpolate-size: allow-keywords; }
  .faq-item::details-content {
    block-size: 0;
    overflow: hidden;
    transition: block-size .34s cubic-bezier(.2, .9, .25, 1),
                content-visibility .34s allow-discrete;
  }
  .faq-item[open]::details-content { block-size: auto; }
  .faq-item[open] > .faq-answer { animation: none; }
}

@media (max-width: 700px) {
  .faq-list { margin-top: 32px; gap: 10px; }
  .faq-item > summary { padding: 18px 18px; gap: 13px; }
  .faq-answer { padding: 0 18px 20px 42px; font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .faq-item, .faq-item::before, .faq-sign, .faq-sign::before, .faq-sign::after { transition: none; }
  .faq-item[open] > .faq-answer { animation: none; }
  .faq-item:hover { transform: none; }
}

/* ── Card grids ──────────────────────────────────────────────── */
.card-grid {
  display: grid; gap: 16px; margin: 32px 0;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.card {
  display: block; background: var(--bg-card);
  border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: 22px 22px 20px; color: var(--ink);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
a.card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-md);
  border-color: var(--teal-wash); color: var(--ink);
}
.card-tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .13em;
  text-transform: uppercase; color: var(--teal-deep); margin-bottom: 10px;
}
.card h3 {
  font-family: var(--font-serif); font-weight: 400;
  font-size: 22px; line-height: 1.2; letter-spacing: -0.012em;
  margin: 0 0 9px; color: var(--ink);
}
.card p { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--ink-soft); }
.card-more {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 14px;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--teal-deep);
}

/* ── CTA block ───────────────────────────────────────────────── */
.cta {
  margin: 56px 0 0; padding: 38px 36px;
  background: var(--basalt); color: var(--fog);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.cta h2 {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(26px, 3.2vw, 34px); line-height: 1.14;
  letter-spacing: -0.015em; margin: 0 0 12px; color: var(--fog);
}
.cta p { margin: 0 0 24px; color: rgba(232, 228, 216, .78); font-size: 16px; max-width: 56ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 500; transition: transform .15s, background .15s, color .15s;
}
.btn-primary { background: var(--fog); color: var(--basalt); }
.btn-primary:hover { background: #fff; color: var(--basalt); transform: translateY(-1px); }
.btn-ghost { border: 1px solid rgba(232, 228, 216, .3); color: var(--fog); }
.btn-ghost:hover { border-color: var(--fog); color: var(--fog); transform: translateY(-1px); }

/* ── Sources ─────────────────────────────────────────────────── */
.sources {
  margin-top: 56px; padding-top: 26px;
  border-top: 1px solid var(--rule-soft);
  font-size: 13.5px; color: var(--ink-mute); line-height: 1.65;
}
.sources h2 {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink-soft); margin: 0 0 12px;
}
.sources ul { margin: 0; padding-left: 18px; }
.sources li { margin-bottom: 7px; }
.sources a { color: var(--ink-soft); border-bottom: 1px solid var(--rule); }
.sources a:hover { color: var(--teal-deep); }
/* Outbound citation: a reader who wants to check the claim should be one
   click from the primary document, and should be able to see that it
   leaves the site before they click. */
.sources a.source-link { border-bottom-color: rgba(15, 95, 83, .28); }
.sources a.source-link::after {
  content: "↗";
  font-size: 10px;
  margin-left: 4px;
  opacity: .6;
  border-bottom: none;
}
.sources a.source-link:hover { border-bottom-color: var(--teal-deep); }

.disclaimer {
  margin-top: 26px; padding: 16px 18px;
  background: var(--bg-sink); border-radius: var(--radius-md);
  font-size: 12.5px; line-height: 1.6; color: var(--ink-mute);
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-foot {
  background: var(--basalt); color: rgba(232, 228, 216, .7);
  padding: 52px 0 34px; margin-top: 0;
}
.site-foot-inner { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.site-foot-top {
  display: grid; gap: 36px; padding-bottom: 32px;
  border-bottom: 1px solid rgba(232, 228, 216, .12);
  grid-template-columns: minmax(220px, 1fr) 2fr;
}
.site-foot-logo { width: 54px; height: 54px; object-fit: contain; display: block; margin-bottom: 12px; }
.site-foot-name {
  font-family: var(--font-serif); font-size: 24px; color: var(--fog); margin: 0 0 4px;
}
.site-foot-tag {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .13em;
  text-transform: uppercase; color: rgba(232, 228, 216, .45); margin: 0 0 12px;
}
.site-foot-mission { font-size: 13.5px; line-height: 1.6; margin: 0; max-width: 40ch; }
.site-foot-nav {
  display: grid; gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}
.site-foot-col-head {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .13em;
  text-transform: uppercase; color: rgba(232, 228, 216, .45); margin-bottom: 12px;
}
.site-foot-col a {
  display: block; color: rgba(232, 228, 216, .72);
  font-size: 14px; padding: 4px 0;
}
.site-foot-col a:hover { color: var(--fog); }
.site-foot-bottom {
  display: flex; flex-wrap: wrap; gap: 14px 26px;
  justify-content: space-between; align-items: center;
  padding-top: 24px; font-size: 12px; color: rgba(232, 228, 216, .45);
}
.site-foot-legal { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-foot-mark { font-family: var(--font-serif); font-style: italic; font-size: 16px; }

@media (max-width: 780px) {
  .site-foot-top { grid-template-columns: 1fr; }
  .article-wrap, .wide-wrap { padding: 32px 22px 80px; }
  .prose { font-size: 16.5px; }
  .cta { padding: 30px 24px; }
  .faq-answer { padding: 0 8px 20px 2px; }
}

/* ── Motion ──────────────────────────────────────────────────── */
/* Deliberately no entrance animation on these pages.
   The homepage is a designed scroll experience and keeps its motion; these
   are documents. Any opacity-0 starting state means a delay in delivering
   this stylesheet leaves the reader looking at a blank column - the wrong
   trade for the rural and low-bandwidth audience this content is written
   for. Hover motion only, and none of that under reduced-motion. */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a.card:hover, .btn:hover, .nav-cta:hover { transform: none; }
}