/* ============================================================
   NTell World Ink — Shared Design System
   styles.css  ·  v1.0  ·  2026
   ============================================================

   FONT LINK — add this to the <head> of every page:

   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Manrope:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">

   ============================================================ */


/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */

:root {
  /* Backgrounds */
  --bg:   #0a0a0c;
  --bg-2: #111114;
  --bg-3: #17171b;

  /* Text */
  --text:   #f5f5f7;
  --text-2: #9b9ba0;
  --text-3: #6b6b70;

  /* Teal accent — pulled from the NTell World Ink banner */
  --accent:      #1ac9c9;
  --accent-2:    #4ddcdc;
  --accent-deep: #0b5555;
  --accent-glow: rgba(26, 201, 201, 0.14);

  /* Warm secondary */
  --warm: #f0c060;

  /* Rules / borders */
  --rule:   #1f1f23;
  --rule-2: #2a2a30;

  /* Content page readable width */
  --content-width: 760px;
}


/* ============================================================
   2. RESET & BASE
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Ambient teal gradient */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 75% 20%, var(--accent-glow), transparent 45%),
    radial-gradient(circle at 15% 80%, rgba(240, 192, 96, 0.04), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Subtle grid lines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; display: block; }
a { color: var(--accent-2); }


/* ============================================================
   3. NOISE OVERLAY (grain texture echoing the banner)
   ============================================================ */

.noise-overlay {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.028;
  pointer-events: none;
  z-index: 9999;
}


/* ============================================================
   4. LAYOUT
   ============================================================ */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

/* Narrower container for readable content pages */
.container-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}


/* ============================================================
   5. TYPOGRAPHY
   ============================================================ */

h1, h2, h3, h4, h5 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  line-height: 1.1;
}

h1 {
  font-weight: 300;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

h2 {
  font-weight: 300;
  font-size: clamp(28px, 4vw, 48px);
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

h3 {
  font-weight: 400;
  font-size: clamp(20px, 2.5vw, 28px);
  letter-spacing: 0.01em;
  margin-bottom: 14px;
}

h4 {
  font-family: 'Manrope', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 12px;
}

p { margin-bottom: 1.2em; color: var(--text-2); }
p:last-child { margin-bottom: 0; }

strong { color: var(--text); font-weight: 600; }

code, pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--bg-2);
  border: 1px solid var(--rule-2);
  border-radius: 6px;
  color: var(--accent-2);
}

code { padding: 2px 6px; }

pre {
  padding: 20px 24px;
  overflow-x: auto;
  line-height: 1.7;
  margin: 20px 0;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-3);
  text-transform: uppercase;
}


/* ============================================================
   6. HEADER / NAVIGATION
   ============================================================ */

header.site {
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
  z-index: 10;
}

.site-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 32px;
  height: 32px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-mark::before,
.brand-mark::after {
  content: '';
  position: absolute;
  border: 1.5px solid var(--accent);
  border-radius: 4px;
}

.brand-mark::before {
  inset: 4px;
  border-color: var(--accent);
}

.brand-mark::after {
  inset: 4px;
  transform: rotate(45deg);
  border-color: var(--accent-2);
  opacity: 0.5;
}

.brand-name {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 500;
  font-size: 20px;
  letter-spacing: 0.04em;
}

.brand-name .dot { color: var(--accent); }

nav.site-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

nav.site-nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

nav.site-nav a:hover { color: var(--text); }


/* ============================================================
   7. BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 10px;
  font-family: 'Manrope', sans-serif;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

/* Filled teal */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-deep), var(--accent));
  color: white;
  box-shadow: 0 0 0 1px rgba(26, 201, 201, 0.3),
              0 8px 24px -8px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(77, 220, 220, 0.5),
              0 12px 28px -8px var(--accent-glow);
  color: white;
}

/* Outlined */
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--rule-2);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--text-2);
  background: var(--bg-2);
  color: var(--text);
}

/* Download — mono style, teal border */
.btn-download {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  border: 1px solid rgba(26, 201, 201, 0.35);
  background: rgba(26, 201, 201, 0.04);
  padding: 12px 20px;
  border-radius: 8px;
}

.btn-download:hover {
  background: rgba(26, 201, 201, 0.1);
  border-color: var(--accent);
  color: var(--accent);
  transform: none;
}

/* Arrow / download icon inside buttons */
.btn .arrow, .btn .icon {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.btn:hover .arrow { transform: translateX(3px); }
.btn:hover .icon-down { transform: translateY(2px); }

.cta-row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}


/* ============================================================
   8. SECTION EYEBROW LABEL
   ============================================================ */

.section-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: inline-block;
}


/* ============================================================
   9. HOMEPAGE — HERO BANNER
   ============================================================ */

.hero-banner { padding: 0; }

.banner-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.banner-img {
  width: 100%;
  display: block;
  max-height: 540px;
  object-fit: cover;
  object-position: center 40%;
}

.banner-fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 140px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}

.banner-cta {
  padding: 36px 32px 80px;
  text-align: center;
}

.banner-tagline {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent-2);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.banner-cta .lead {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.65;
  max-width: 620px;
  margin: 0 auto 36px;
}

.banner-cta .cta-row { justify-content: center; }


/* ============================================================
   10. HOMEPAGE — ABOUT
   ============================================================ */

.about {
  padding: 80px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.about-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.about p {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.7;
}


/* ============================================================
   11. HOMEPAGE — COURSE LIBRARY ACCORDION
   ============================================================ */

.library { padding: 96px 0 64px; }

.library-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 48px;
  gap: 32px;
  flex-wrap: wrap;
}

.library-header-text { max-width: 560px; }
.library-header h2 { margin-bottom: 16px; }

.library-header p {
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.6;
}

.library-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 8px 16px;
  border: 1px solid var(--rule-2);
  border-radius: 100px;
}

details.course {
  border-top: 1px solid var(--rule);
  transition: background 0.2s ease;
}

details.course:last-of-type { border-bottom: 1px solid var(--rule); }

details.course[open] {
  background: linear-gradient(180deg, rgba(26,201,201,0.025), transparent);
}

details.course summary {
  list-style: none;
  cursor: pointer;
  padding: 28px 0;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 24px;
  transition: padding 0.2s ease;
}

details.course summary::-webkit-details-marker { display: none; }
details.course summary:hover { padding-left: 12px; }

.course-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  width: 48px;
}

.course-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 32px);
  color: var(--text);
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.course-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 100px;
  border: 1px solid var(--rule-2);
  color: var(--text-2);
  white-space: nowrap;
}

.course-tag.available {
  background: rgba(26,201,201,0.08);
  border-color: rgba(26,201,201,0.4);
  color: var(--accent-2);
}

.course-tag.soon { color: var(--text-3); }

.chevron {
  width: 20px;
  height: 20px;
  stroke: var(--text-2);
  stroke-width: 2;
  fill: none;
  transition: transform 0.25s ease;
}

details.course[open] .chevron {
  transform: rotate(180deg);
  stroke: var(--text);
}

.course-body {
  padding: 0 0 36px 72px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.course-body p.desc {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 20px;
}

.course-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.course-meta-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.course-meta-item strong { color: var(--text); font-weight: 500; }

.course-aside {
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 24px;
}

.course-aside-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.course-aside ul { list-style: none; padding: 0; }

.course-aside li {
  font-size: 13px;
  color: var(--text-2);
  padding: 6px 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 10px;
}

.course-aside li:last-child { border-bottom: none; }

.course-aside li::before {
  content: '◆';
  color: var(--accent);
  font-size: 9px;
  margin-top: 6px;
}


/* ============================================================
   12. FOOTER
   ============================================================ */

footer.site {
  border-top: 1px solid var(--rule);
  padding: 64px 0 48px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-2);
  font-size: 14px;
  margin-top: 16px;
  max-width: 360px;
  line-height: 1.6;
}

.footer-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 500;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }

.footer-col a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--text); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 16px;
}


/* ============================================================
   13. CONTENT PAGES — BREADCRUMB
   ============================================================ */

.breadcrumb {
  padding: 24px 0 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}

.breadcrumb a {
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--accent-2); }

.breadcrumb .sep { opacity: 0.4; }


/* ============================================================
   14. CONTENT PAGES — PAGE MASTHEAD
   ============================================================ */

.page-masthead {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0;
}

.page-masthead .series-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-masthead .series-label::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent);
}

.page-masthead h1 {
  color: var(--text);
  margin-bottom: 24px;
}

.page-masthead .subtitle {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 680px;
  margin-bottom: 32px;
}

.page-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 28px;
}

.page-meta-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-meta-item strong {
  color: var(--text-2);
  font-weight: 500;
}

/* Download strip inside masthead */
.download-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.download-strip-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}


/* ============================================================
   15. CONTENT PAGES — BODY & SECTIONS
   ============================================================ */

.content-body {
  padding: 60px 0 0;
}

.content-section {
  max-width: var(--content-width);
  margin: 0 auto 64px;
}

.content-section h2 {
  font-size: clamp(26px, 3.5vw, 40px);
  margin-bottom: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.content-section h3 {
  font-size: clamp(20px, 2.5vw, 28px);
  margin-bottom: 14px;
  margin-top: 32px;
  color: var(--text);
}

.content-section p {
  font-size: 17px;
  line-height: 1.75;
  margin-bottom: 1.3em;
}

.content-section ul, .content-section ol {
  padding-left: 1.4em;
  margin-bottom: 1.2em;
}

.content-section li {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 0.5em;
}

.section-rule {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
  max-width: var(--content-width);
}


/* ============================================================
   16. CONTENT PAGES — CALLOUT BOXES
   ============================================================ */

.callout {
  border-radius: 12px;
  padding: 24px 28px;
  margin: 28px 0;
  border-left: 3px solid var(--accent);
  background: var(--bg-2);
  position: relative;
}

.callout-key {
  border-left-color: var(--accent);
  background: linear-gradient(135deg, rgba(26,201,201,0.06), var(--bg-2));
}

.callout-warning {
  border-left-color: var(--warm);
  background: linear-gradient(135deg, rgba(240,192,96,0.06), var(--bg-2));
}

.callout-warning .callout-title { color: var(--warm); }

.callout-tip {
  border-left-color: var(--text-3);
  background: var(--bg-2);
}

.callout-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.callout p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 0;
  line-height: 1.7;
}

.callout p:not(:last-child) { margin-bottom: 0.8em; }


/* ============================================================
   17. CONTENT PAGES — APP CARD GRID
   Used for: Microsoft 365 app overviews, tool comparisons
   ============================================================ */

.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.app-card {
  background: var(--bg-2);
  border: 1px solid var(--rule-2);
  border-radius: 12px;
  padding: 20px 24px;
  transition: border-color 0.2s ease;
}

.app-card:hover { border-color: rgba(26,201,201,0.25); }

.app-card-category {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.app-card h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  font-size: 22px;
  color: var(--text);
  margin-bottom: 8px;
  margin-top: 0;
}

.app-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 0;
}

/* Span full width — use on a single "wide" card */
.app-card-wide {
  grid-column: 1 / -1;
}


/* ============================================================
   18. CONTENT PAGES — CHECKLIST
   Used for: settings, quick wins, action items
   ============================================================ */

.checklist {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.65;
}

.checklist li:last-child { border-bottom: none; }

.checklist li::before {
  content: '';
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--accent);
  border-radius: 5px;
  flex-shrink: 0;
  margin-top: 3px;
  background: rgba(26,201,201,0.06);
}

/* Interactive checkbox variant — add class="checklist-interactive" to ul */
.checklist-interactive li { cursor: pointer; }

.checklist-interactive li.done { color: var(--text-3); text-decoration: line-through; }

.checklist-interactive li.done::before {
  background: var(--accent-deep);
  border-color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 8l3.5 3.5L13 5' stroke='%234ddcdc' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}


/* ============================================================
   19. CONTENT PAGES — TENANT / COMPARISON GRID
   Used for: inside vs outside tenant, pros vs cons, etc.
   ============================================================ */

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}

.compare-col {
  background: var(--bg-2);
  border: 1px solid var(--rule-2);
  border-radius: 12px;
  padding: 24px;
}

.compare-col-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-2);
}

.compare-col.col-yes .compare-col-label { color: var(--accent-2); }
.compare-col.col-no  .compare-col-label { color: var(--warm); }

.compare-col ul { list-style: none; padding: 0; }

.compare-col li {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 10px;
}

.compare-col li:last-child { border-bottom: none; }

.compare-col.col-yes li::before { content: '◆'; color: var(--accent); font-size: 8px; margin-top: 7px; flex-shrink: 0; }
.compare-col.col-no  li::before { content: '◆'; color: var(--warm);   font-size: 8px; margin-top: 7px; flex-shrink: 0; }


/* ============================================================
   20. CONTENT PAGES — SESSION NAVIGATION
   ============================================================ */

.session-nav {
  border-top: 1px solid var(--rule);
  padding: 40px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: var(--content-width);
  margin: 0 auto;
}

.session-nav-item {
  background: var(--bg-2);
  border: 1px solid var(--rule-2);
  border-radius: 12px;
  padding: 20px 24px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.session-nav-item:hover {
  border-color: rgba(26,201,201,0.3);
  background: var(--bg-3);
  color: var(--text);
}

.session-nav-item.next { text-align: right; }

.session-nav-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.session-nav-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 18px;
  font-weight: 400;
  color: var(--text);
}


/* ============================================================
   21. RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  /* Banner */
  .banner-img       { max-height: 340px; }
  .banner-cta       { padding: 28px 20px 64px; }
  .banner-cta .lead { font-size: 16px; }

  /* Accordion */
  .course-body {
    grid-template-columns: 1fr;
    padding: 0 0 28px 0;
    gap: 24px;
  }

  details.course summary {
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    padding: 22px 0;
  }

  .course-num { display: none; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  /* Nav */
  nav.site-nav { display: none; }

  /* Layout */
  .container, .container-content { padding: 0 20px; }

  /* App cards */
  .app-grid { grid-template-columns: 1fr; }

  /* Compare grid */
  .compare-grid { grid-template-columns: 1fr; }

  /* Session nav */
  .session-nav { grid-template-columns: 1fr; }
  .session-nav-item.next { text-align: left; }
}

@media (max-width: 540px) {
  .course-tag { display: none; }
  details.course summary { grid-template-columns: 1fr auto; }
  .banner-img { max-height: 260px; }
  .page-meta  { gap: 16px; }
  .download-strip { flex-direction: column; align-items: flex-start; }
}
