/* ==========================================================================
   Brilliance Labs — shared design system  (/css/site.css)
   --------------------------------------------------------------------------
   Linked from every public page BEFORE the page's own <style> block, so a
   page can still override a token or a rule. Page-specific layout stays
   inline in each page; everything shared lives here:

     1. Tokens (:root)            6. Buttons
     2. Base + accessibility      7. Card + section header
     3. Canonical nav             8. Scroll reveal (no-JS safe)
     4. Mobile menu               8b. Email signup (footer row, bands)
     5. Canonical footer          9. Reduced motion + print

   Plain CSS, no build step. See design.md §2 for the reasoning behind the
   values (contrast ratios are measured on --bg #F5F2EB).
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Surfaces */
  --bg:         #F5F2EB;
  --bg-alt:     #EDEAE2;
  --bg-card:    #EFECE5;
  --bg-white:   #FAFAF7;
  --black:      #0D0D0D;
  --black-2:    #161616;               /* card on black */
  --ink:        #1A1A1A;               /* body text on light */
  --cream:      #F2EFE8;               /* text on dark */

  /* Text on light (on --bg / --bg-alt) */
  --muted:      rgba(13,13,13,0.64);   /* 5.6 : 1  secondary body text */
  --subtle:     rgba(13,13,13,0.58);   /* 4.6 : 1  meta text, 12px+ */
  --faint:      rgba(13,13,13,0.24);   /* decoration / borders only, never text */
  --border:     rgba(13,13,13,0.09);
  --border-mid: rgba(13,13,13,0.16);
  --field-border: rgba(13,13,13,0.45);  /* 3 : 1  form field outlines */

  /* Text on dark (on #0D0D0D) */
  --on-dark:        #F2EFE8;
  --on-dark-muted:  rgba(242,239,232,0.72);  /* 9.0 : 1  body on black */
  --on-dark-subtle: rgba(242,239,232,0.58);  /* 6.1 : 1  labels/meta minimum */
  --on-dark-border: rgba(255,255,255,0.12);

  /* Brand */
  --orange:       #E8860F;   /* fills, bars, rules, big display type, text ON BLACK */
  --orange-hover: #F09A2E;   /* button hover */
  --orange-ink:   #9A5700;   /* orange TEXT on cream under 24px (5.0 : 1) */
  --orange-dim:   rgba(232,134,15,0.07);
  --green:        #13874a;
  --green-ink:    #0F703E;   /* green text on cream (5.5 : 1) */
  --green-dim:    rgba(19,135,74,0.08);
  --gold:         #BA7517;
  --gold-ink:     #8F5A12;   /* gold text on cream (5.2 : 1) */
  --blue:         #3d5ed2;

  /* Buttons: text colour on an orange fill. #0D0D0D on #E8860F = 7.3 : 1.
     (White on #E8860F is 2.68 : 1 and fails WCAG.) Switch here if needed. */
  --btn-primary-text: #0D0D0D;

  /* Per-page accent (override with body.accent-green / body.accent-gold) */
  --accent:     var(--orange);
  --accent-ink: var(--orange-ink);
  --accent-on:  var(--btn-primary-text);
  --accent-hover: var(--orange-hover);

  /* Focus ring */
  --focus:         #9A5700;
  --focus-on-dark: #F4AC54;

  /* Type */
  --display: 'Bebas Neue', 'Arial Narrow', sans-serif;
  --serif:   'Cormorant Garamond', Georgia, serif;
  --body:    'DM Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --fs-hero:    clamp(64px, 11vw, 168px);
  --fs-page:    clamp(56px, 9vw, 140px);
  --fs-article: clamp(44px, 6.5vw, 96px);
  --fs-h2:      clamp(40px, 5.5vw, 76px);
  --fs-h3:      clamp(26px, 2.6vw, 36px);
  --fs-h4:      20px;
  --fs-lead:    clamp(18px, 1.5vw, 21px);
  --fs-body:    17px;
  --fs-small:   14px;
  --fs-label:   12px;   /* floor: nothing smaller than 12px */

  /* Spacing (8-pt) */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px; --s-5: 24px;
  --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px; --s-10: 120px;
  --gutter:    52px;
  --section-y: 120px;
  --container: 1320px;
  --measure:   68ch;
  --nav-h:     93px;

  /* Shape + motion */
  --radius: 0;
  --ease:   cubic-bezier(0.16,1,0.3,1);
  --motion-dur: 0.7s;
}
@media (max-width: 900px) {
  :root { --gutter: 28px; --section-y: 80px; --nav-h: 71px; }
}
@media (max-width: 400px) {
  :root { --gutter: 20px; --nav-h: 63px; }
}

/* Accent themes (put on <body>) */
.accent-green { --accent: var(--green); --accent-ink: var(--green-ink); --accent-on: #fff; --accent-hover: var(--green-ink); }
.accent-gold  { --accent: var(--gold);  --accent-ink: var(--gold-ink);  --accent-on: var(--black); --accent-hover: #CC8526; }
/* Bright Ideas Think Tank: honey. Fill #D4A853 (8.82:1 with #0D0D0D text), ink #7A5A14 (5.69:1 on cream). */
.accent-honey { --accent: #D4A853; --accent-ink: #7A5A14; --accent-on: var(--black); --accent-hover: #E0BC72; }

/* --------------------------------------------------------------------------
   2. BASE + ACCESSIBILITY
   Zero-specificity (:where) defaults, so any page rule wins.
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

:where(html) { scroll-padding-top: calc(var(--nav-h) + 16px); -webkit-text-size-adjust: 100%; }
:where(body) {
  margin: 0;
  font-family: var(--body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
:where(h1, h2, h3) { text-wrap: balance; }
:where(p, li, blockquote, figcaption) { text-wrap: pretty; }

/* Visible keyboard focus everywhere (mouse clicks don't trigger it) */
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.on-dark :focus-visible,
.nav--dark :focus-visible { outline-color: var(--focus-on-dark); }
[tabindex="-1"]:focus { outline: none; }

/* Screen-reader-only text */
.visually-hidden, .sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* Skip link: first thing in <body>, visible only when focused */
.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 1000;
  padding: 12px 18px;
  background: var(--black);
  color: #fff;
  font: 600 14px/1 var(--body);
  letter-spacing: 0.04em;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s;
}
.skip-link:focus, .skip-link:focus-visible { transform: none; outline: 3px solid var(--focus-on-dark); outline-offset: 2px; }

main:focus { outline: none; }

/* --------------------------------------------------------------------------
   3. CANONICAL NAV   <nav id="nav" class="site-nav"> (…)
   Light by default; add .nav--dark for dark pages (FF, BfM).
   -------------------------------------------------------------------------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 26px var(--gutter);
  background: rgba(245,242,235,0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  font-family: var(--body);
  transition: padding 0.3s var(--ease), background 0.3s;
}
.site-nav.scrolled { padding-top: 18px; padding-bottom: 18px; background: rgba(245,242,235,0.97); }

.site-nav .nav-logo { display: block; flex-shrink: 0; line-height: 0; text-decoration: none; }
.site-nav .nav-logo img { display: block; height: 28px; width: auto; }

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 38px;
  list-style: none;
  margin: 0; padding: 0;
}
.site-nav .nav-links > li { max-width: none; }
.site-nav .nav-links a,
.site-nav .nav-dropdown-toggle {
  display: inline-block;
  font: 400 13.5px/1.4 var(--body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  padding: 6px 0;
  transition: color 0.2s, box-shadow 0.2s;
}
.site-nav .nav-links > li > a:hover,
.site-nav .nav-dropdown-toggle:hover { box-shadow: inset 0 -1px 0 currentColor; }
.site-nav .nav-links > li > a[aria-current="page"],
.site-nav .nav-links > li > a.active,
.site-nav .nav-dropdown-toggle.active,
.site-nav .nav-dropdown-toggle[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

/* Initiatives dropdown: link + separate caret button (keyboard + touch) */
.site-nav .nav-dropdown { position: relative; display: flex; align-items: center; }
.site-nav .nav-dropdown-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px; height: 28px;
  margin-left: 0;
  padding: 0;
  background: none;
  border: 0;
  color: inherit;
  cursor: pointer;
}
.site-nav .nav-dropdown-btn .nav-caret {
  width: 0; height: 0;
  border-left: 3.5px solid transparent;
  border-right: 3.5px solid transparent;
  border-top: 4px solid var(--black);
  transition: transform 0.25s;
}
.site-nav .nav-dropdown.open .nav-caret { transform: rotate(180deg); }

.site-nav .nav-dropdown-menu {
  position: absolute;
  top: 100%; left: -24px;
  padding-top: 18px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  z-index: 110;
}
.site-nav .nav-dropdown.open .nav-dropdown-menu { opacity: 1; visibility: visible; transform: none; }
@media (hover: hover) and (pointer: fine) {
  .site-nav .nav-dropdown:hover .nav-dropdown-menu { opacity: 1; visibility: visible; transform: none; }
  .site-nav .nav-dropdown:hover .nav-caret { transform: rotate(180deg); }
}
/* Without JS, keyboard focus still opens it */
html:not(.js) .site-nav .nav-dropdown:focus-within .nav-dropdown-menu { opacity: 1; visibility: visible; transform: none; }

.site-nav .nav-dropdown-inner {
  min-width: 260px;
  padding: 14px 0;
  background: rgb(245,242,235);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.site-nav .nav-dropdown-inner a {
  display: block;
  padding: 9px 28px;
  font-size: 13.5px;
  letter-spacing: 0.1em;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}
.site-nav .nav-dropdown-inner a:hover { background: rgba(13,13,13,0.04); box-shadow: none; }
.site-nav .nav-dropdown-inner a[aria-current="page"] { color: var(--accent-ink); box-shadow: inset 2px 0 0 var(--accent); }
.site-nav .nav-dropdown-divider { height: 1px; margin: 8px 28px; background: var(--border); }

/* Nav CTA (always "Give Now") */
.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 24px;
  flex-shrink: 0;
  white-space: nowrap;
  font: 600 12px/1 var(--body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fff;
  background: var(--black);
  border: 1px solid var(--black);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
/* Give Now is the parent brand: always Brilliance orange, whatever the page accent. */
.site-nav .nav-cta:hover { background: var(--orange); border-color: var(--orange); color: var(--btn-primary-text); }
.site-nav .nav-cta-short { display: none; }

/* Hamburger (shown under 900px) */
.site-nav .nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px; height: 44px;
  margin-right: -8px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
  z-index: 110;
}
.site-nav .nav-hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--black);
  transition: transform 0.3s, opacity 0.3s;
}
.site-nav .nav-hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav .nav-hamburger.active span:nth-child(2) { opacity: 0; }
.site-nav .nav-hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Dark variant (Frontier Finance, Bitcoin for Missions). Pages may set
   --nav-dark-bg / --nav-dark-menu in :root to match their own dark tone. */
.site-nav.nav--dark {
  background: var(--nav-dark-bg, rgba(13,13,13,0.92));
  border-bottom-color: rgba(255,255,255,0.06);
}
.site-nav.nav--dark.scrolled { background: var(--nav-dark-bg, rgba(13,13,13,0.96)); }
.site-nav.nav--dark .nav-links a,
.site-nav.nav--dark .nav-dropdown-toggle { color: var(--on-dark-muted); }
.site-nav.nav--dark .nav-links > li > a:hover,
.site-nav.nav--dark .nav-dropdown-toggle:hover,
.site-nav.nav--dark .nav-links > li > a[aria-current="page"],
.site-nav.nav--dark .nav-dropdown-toggle.active { color: var(--on-dark); }
.site-nav.nav--dark .nav-caret { border-top-color: var(--on-dark-muted); }
.site-nav.nav--dark .nav-dropdown-inner {
  background: var(--nav-dark-menu, rgba(13,13,13,0.98));
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.site-nav.nav--dark .nav-dropdown-inner a:hover { color: var(--on-dark); background: rgba(255,255,255,0.05); }
.site-nav.nav--dark .nav-dropdown-inner a[aria-current="page"] { color: var(--on-dark); }
.site-nav.nav--dark .nav-dropdown-divider { background: rgba(255,255,255,0.08); }
.site-nav.nav--dark .nav-cta { background: var(--orange); border-color: var(--orange); color: var(--btn-primary-text); }
.site-nav.nav--dark .nav-cta:hover { background: var(--orange-hover); border-color: var(--orange-hover); color: var(--btn-primary-text); }
.site-nav.nav--dark .nav-hamburger span { background: var(--on-dark); }

/* --------------------------------------------------------------------------
   4. MOBILE MENU   <div class="mobile-nav-overlay" id="mobile-nav">
   -------------------------------------------------------------------------- */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  flex-direction: column;
  padding: calc(var(--nav-h) + 20px) 32px 64px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  background: rgba(245,242,235,0.99);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-overlay a {
  display: block;
  padding: 14px 0;
  font-family: var(--display);
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-nav-overlay a:hover { color: var(--orange-ink); }
.mobile-nav-overlay a[aria-current="page"] { color: var(--accent-ink); }
.mobile-nav-overlay .mobile-nav-sub {
  padding: 12px 0 12px 20px;
  font-family: var(--body);
  font-size: 14px;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.mobile-nav-submenu { display: flex; flex-direction: column; }
html.menu-open, html.menu-open body { overflow: hidden; }

@media (max-width: 900px) {
  .site-nav { padding: 13px var(--gutter); gap: 16px; }
  .site-nav.scrolled { padding-top: 13px; padding-bottom: 13px; }
  .site-nav .nav-links { display: none; }
  .site-nav .nav-hamburger { display: flex; order: 2; }
  .site-nav .nav-cta { order: 1; margin-left: auto; min-height: 36px; padding: 8px 16px; font-size: 12px; }
}
@media (max-width: 400px) {
  .site-nav { padding: 9px var(--gutter); gap: 10px; }
  .site-nav.scrolled { padding-top: 9px; padding-bottom: 9px; }
  .site-nav .nav-logo img { height: 24px; }
  .site-nav .nav-cta { padding: 8px 14px; }
  .site-nav .nav-cta-full { display: none; }
  .site-nav .nav-cta-short { display: inline; }
  .mobile-nav-overlay { padding-left: 24px; padding-right: 24px; }
}

/* --------------------------------------------------------------------------
   5. CANONICAL FOOTER   <footer class="site-footer">
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  color: var(--ink);
  font-family: var(--body);
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 52px;
  align-items: start;
  padding: 72px var(--gutter) 40px;
}
.site-footer p { margin: 0; max-width: none; }
.site-footer .footer-logo {
  margin-bottom: 14px;
  font-family: var(--display);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
}
.site-footer .footer-logo span { color: var(--orange); }
.site-footer .footer-tagline {
  margin-bottom: 10px;
  font-style: italic;
  font-weight: 300;
  font-size: 14px;
  color: var(--muted);
}
.site-footer .footer-meta { font-size: 13px; line-height: 1.7; color: var(--subtle); }
.site-footer .footer-h {
  margin: 0 0 20px;
  font: 500 12px/1.4 var(--body);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange-ink);
}
.site-footer .footer-col a,
.site-footer .footer-col .footer-text {
  display: block;
  width: fit-content;
  margin-bottom: 6px;
  padding: 3px 0;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.5;
  color: #333;
  text-decoration: none;
  transition: color 0.2s;
}
.site-footer .footer-col a:hover { color: var(--black); text-decoration: underline; text-underline-offset: 3px; }
.site-footer .footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 24px var(--gutter);
  border-top: 1px solid var(--border);
}
.site-footer .footer-bottom p { font-size: 13px; letter-spacing: 0.06em; color: var(--subtle); }

@media (max-width: 900px) {
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px 32px; padding: 52px var(--gutter) 32px; }
  .site-footer .footer-brand { grid-column: 1 / -1; }
  .site-footer .footer-bottom { flex-direction: column; align-items: flex-start; padding: 20px var(--gutter) 28px; }
}

/* --------------------------------------------------------------------------
   6. BUTTONS   .btn + .btn-primary | .btn-dark | .btn-ghost  (+ .btn-sm)
   Square, uppercase, 48px tall. The accent may change per page; the
   geometry may not. (Guarded so micro-sites with their own .btn are safe.)
   -------------------------------------------------------------------------- */
:where(body:not(.microsite)) .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 16px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: 600 13px/1 var(--body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-primary { background: var(--accent); color: var(--accent-on); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-on); }
.btn-dark { background: var(--black); color: #fff; border-color: var(--black); }
.btn-dark:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-on); }
.btn-ghost { background: transparent; color: inherit; border-color: currentColor; border-color: color-mix(in srgb, currentColor 35%, transparent); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-ink); }
.on-dark .btn-ghost:hover { color: var(--orange); }
:where(body:not(.microsite)) .btn-sm { min-height: 40px; padding: 10px 22px; font-size: 12px; }

.link-arrow {
  font: 600 13px/1.4 var(--body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  text-decoration: none;
}
.link-arrow:hover { text-decoration: underline; text-underline-offset: 4px; }
.on-dark .link-arrow { color: var(--orange); }

/* --------------------------------------------------------------------------
   7. CARD + SECTION HEADER (opt-in components for new/updated sections)
   -------------------------------------------------------------------------- */
:where(body:not(.microsite)) .card {
  display: flex;
  flex-direction: column;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
:where(body:not(.microsite)) .card:hover { border-color: var(--border-mid); transform: translateY(-2px); }
.card-label { margin-bottom: 16px; font: 500 12px/1.4 var(--body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-ink); }
.card-title { margin: 0 0 16px; font-family: var(--display); font-size: var(--fs-h3); font-weight: 400; line-height: 0.95; text-transform: uppercase; color: var(--black); }
.card-body  { font-size: 16px; line-height: 1.65; color: var(--muted); }
.card-foot  { margin-top: auto; padding-top: 24px; }
.card-media { display: block; width: calc(100% + 80px); margin: -40px -40px 24px; aspect-ratio: 16 / 10; object-fit: cover; }
.card-grid  { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.card-grid > .card { background: var(--bg); border: 0; }

:where(body:not(.microsite)) .section { padding: var(--section-y) var(--gutter); }
.section-inner-max { max-width: var(--container); margin-inline: auto; }
.section-head { margin-bottom: var(--s-8); }
.section-head--split { display: grid; grid-template-columns: 5fr 7fr; gap: var(--s-8); align-items: end; }
.section-head .eyebrow,
.eyebrow-rule {
  display: flex; align-items: center; gap: 12px;
  margin: 0 0 20px;
  font: 500 12px/1.4 var(--body);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.section-head .eyebrow::before,
.eyebrow-rule::before { content: ''; width: 24px; height: 2px; background: var(--accent); }
.section-head .section-title {
  margin: 0;
  font-family: var(--display);
  font-size: var(--fs-h2);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--black);
}
.section-head .section-title::after { content: ''; display: block; width: 56px; height: 3px; margin-top: 24px; background: var(--accent); }
.section-head .section-lede { max-width: 56ch; margin-top: 24px; font-size: var(--fs-lead); font-weight: 300; line-height: 1.6; color: var(--muted); }
.on-dark .section-head .eyebrow { color: var(--orange); }
.on-dark .section-head .section-title { color: var(--on-dark); }
.on-dark .section-head .section-lede { color: var(--on-dark-muted); }
@media (max-width: 767px) {
  .section-head--split { grid-template-columns: 1fr; gap: var(--s-5); }
}

/* --------------------------------------------------------------------------
   8. SCROLL REVEAL — content is visible by default.
   Only hidden when /js/site.js has put .js on <html> AND motion is allowed.
   site.js reveals anything already in/above the viewport at once, and uses
   IntersectionObserver with threshold 0 so very tall sections still reveal.
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--motion-dur) var(--ease), transform var(--motion-dur) var(--ease);
  }
  .js .reveal.visible { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   8b. EMAIL SIGNUP   <form class="signup" data-signup ...>  (JS: /js/site.js §6)
   One component, three layouts:
     .signup--row   slim row at the top of every footer
     .signup--band  inside <section class="signup-band"> (home, posts, grants)
     (no modifier)  Contact / From the Lab keep their own .newsletter-form row
   Add .signup--dark on dark backgrounds.
   -------------------------------------------------------------------------- */
.signup { position: relative; margin: 0; font-family: var(--body); }
.signup-hp { position: absolute !important; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.signup-lede { margin: 0; font-size: 16px; line-height: 1.5; color: var(--ink); }
.signup-lede strong { font-weight: 600; color: var(--black); }
.signup-label {
  display: block;
  margin: 0 0 8px;
  font: 500 12px/1.4 var(--body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}
.signup-control { display: flex; min-width: 0; }
.signup-input {
  flex: 1 1 auto;
  min-width: 0;
  height: 48px;
  margin: 0;
  padding: 0 16px;
  font: 400 16px/1.2 var(--body);
  color: var(--ink);
  background: var(--bg-white);
  border: 1px solid var(--field-border);
  border-right: 0;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
}
.signup-input::placeholder { color: var(--subtle); opacity: 1; }
.signup-input:focus-visible { outline: 3px solid var(--focus); outline-offset: 0; }
.signup-input[aria-invalid="true"] { border-color: #B3261E; box-shadow: inset 0 0 0 1px #B3261E; }
.signup-btn {
  flex: none;
  height: 48px;
  margin: 0;
  padding: 0 24px;
  font: 600 13px/1 var(--body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  background: var(--black);
  border: 1px solid var(--black);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.signup-btn:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-on); }
.signup-btn:focus-visible { outline-offset: 2px; }
.signup-btn[disabled] { cursor: progress; opacity: 0.75; }
/* Turnstile stays out of the layout unless it has to ask for a click. */
.signup-turnstile:not(.is-visible) { position: absolute; width: 1px; height: 1px; overflow: hidden; }
.signup-turnstile.is-visible { margin-top: 12px; }
.signup-status { margin: 10px 0 0; font-size: 14px; line-height: 1.5; color: var(--ink); }
.signup-status:empty { margin: 0; }
.signup-status.is-success { color: var(--green-ink); font-weight: 500; }
.signup-status.is-error { color: #A4221A; }
.signup-status a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.signup-note { margin: 8px 0 0; font-size: 13px; line-height: 1.5; color: var(--muted); }
.signup-note a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.signup-note a:hover { color: var(--black); }

/* Footer row */
.site-footer .footer-signup { padding: 32px var(--gutter); border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.signup--row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 500px);
  column-gap: 48px;
  align-items: center;
}
.signup--row .signup-lede { grid-column: 1; grid-row: 1 / span 4; }
.signup--row > .signup-control,
.signup--row > .signup-turnstile,
.signup--row > .signup-status,
.signup--row > .signup-note { grid-column: 2; }
@media (max-width: 900px) {
  .site-footer .footer-signup { padding: 28px var(--gutter); }
  .signup--row { grid-template-columns: minmax(0, 1fr); }
  .signup--row .signup-lede { grid-row: auto; margin-bottom: 12px; }
  .signup--row > .signup-control,
  .signup--row > .signup-turnstile,
  .signup--row > .signup-status,
  .signup--row > .signup-note { grid-column: 1; }
}
@media (max-width: 380px) {
  .signup-btn { padding: 0 16px; letter-spacing: 0.08em; }
  .signup-input { padding: 0 12px; }
}

/* Band (home, blog posts, Portland Grants) */
.signup-band { padding: clamp(56px, 7vw, 96px) var(--gutter); background: var(--bg-alt); border-top: 1px solid var(--border); }
.signup-band--bg { background: var(--bg); }
.signup-band[hidden] { display: none; }
.signup-band-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 32px 72px;
  align-items: center;
}
.signup-band .eyebrow-rule { margin-bottom: 16px; }
.signup-band-title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(38px, 4.6vw, 64px);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--black);
}
.signup-band-text { margin: 16px 0 0; max-width: 48ch; font-size: 16px; font-weight: 300; line-height: 1.75; color: var(--muted); }
.signup--band .signup-input { height: 56px; }
.signup--band .signup-btn { height: 56px; padding: 0 32px; }
/* Boxed band: sits inside a narrower column (blog posts) */
.signup-band--boxed { max-width: 1040px; margin: 48px auto 0; padding: 0 52px; background: none; border-top: 0; }
.signup-band--boxed .signup-band-inner { padding: clamp(32px, 4vw, 48px); background: var(--bg-alt); border: 1px solid var(--border); grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px 48px; }
.signup-band--boxed .signup-band-title { font-size: clamp(32px, 3.6vw, 48px); }
@media (max-width: 900px) {
  .signup-band-inner { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .signup-band--boxed { padding: 0 28px; }
  .signup-band--boxed .signup-band-inner { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 480px) {
  .signup--band .signup-control { flex-direction: column; gap: 8px; }
  .signup--band .signup-input { border-right: 1px solid var(--field-border); }
  .signup--band.signup--dark .signup-input { border-right-color: rgba(242,239,232,0.45); }
  .signup--band .signup-btn { width: 100%; }
  .signup-band--boxed { padding: 0 20px; }
  .signup-band--boxed .signup-band-inner { padding: 28px 20px; }
}

/* Dark backgrounds */
.signup--dark .signup-lede,
.signup--dark .signup-label,
.signup--dark .signup-status { color: var(--on-dark); }
.signup--dark .signup-lede strong { color: #fff; }
.signup--dark .signup-input { color: var(--on-dark); background: rgba(255,255,255,0.06); border-color: rgba(242,239,232,0.45); }
.signup--dark .signup-input::placeholder { color: var(--on-dark-subtle); }
.signup--dark .signup-input:focus-visible,
.signup--dark .signup-btn:focus-visible { outline-color: var(--focus-on-dark); }
.signup--dark .signup-btn { color: var(--btn-primary-text); background: var(--orange); border-color: var(--orange); }
.signup--dark .signup-btn:hover { background: var(--orange-hover); border-color: var(--orange-hover); color: var(--btn-primary-text); }
.signup--dark .signup-status.is-success { color: #7FD6A4; }
.signup--dark .signup-status.is-error { color: #FFB4A9; }
.signup--dark .signup-note { color: var(--on-dark-subtle); }
.signup--dark .signup-note a:hover { color: var(--on-dark); }

/* Legal line in the canonical footer */
.site-footer .footer-bottom a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.site-footer .footer-bottom a:hover { color: var(--black); }

/* --------------------------------------------------------------------------
   9. REDUCED MOTION + PRINT
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}
@media print {
  .site-nav, .mobile-nav-overlay, .skip-link, .footer-signup, .signup-band { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}