/* =============================================================
   STYLES — components & page composition
   ============================================================= */

@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,500&display=swap");

/* ---------------- PRELOADER ---------------- */
#preloader {
  position: fixed; inset: 0; z-index: 1000;
  display: grid; place-items: center;
  background: var(--c-void);
  transition: opacity 800ms var(--ease-out), visibility 800ms;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
.pre-stack { text-align: center; display: flex; flex-direction: column; align-items: center; }

/* preloader logo mark — breathe-in + dot pulse */
.pre-markwrap {
  position: relative; display: inline-block;
  margin-bottom: var(--space-7);
  opacity: 0; transform: scale(0.9);
  animation: preMarkIn 1000ms var(--ease-out) 120ms forwards;
}
.pre-mark {
  display: block; width: auto; height: 58px;
  /* whole-logo pulse while loading: scale + opacity beat with soft glow */
  animation: preBreathe 1300ms 250ms ease-in-out infinite;
  will-change: transform, opacity, filter;
}
/* blue dot halo, positioned over the painted dot (87.6% / 11.3% of mark box) */
.pre-dot {
  position: absolute; top: 11.3%; left: 87.6%;
  width: 15%; height: 15%;
  transform: translate(-50%, -50%) scale(0.9);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, var(--c-blue-bright) 30%, rgba(127,176,207,0.6) 55%, rgba(127,176,207,0) 75%);
  opacity: 0;
  animation: preDotPulse 1100ms 250ms ease-in-out infinite;
  pointer-events: none;
}
@keyframes preMarkIn { to { opacity: 1; transform: scale(1); } }
@keyframes preBreathe {
  0%, 100% {
    transform: scale(0.93);
    opacity: 0.55;
    filter: drop-shadow(0 0 0 rgba(127,176,207,0));
  }
  50% {
    transform: scale(1.06);
    opacity: 1;
    filter: drop-shadow(0 0 10px rgba(127,176,207,0.45));
  }
}
@keyframes preDotPulse {
  0%, 100% { opacity: 0.2; transform: translate(-50%, -50%) scale(0.8); }
  50%      { opacity: 1;   transform: translate(-50%, -50%) scale(1.45); }
}
@media (prefers-reduced-motion: reduce) {
  .pre-mark { animation: none; opacity: 1; transform: none; }
  .pre-dot  { animation: none; opacity: 0.4; }
}

.pre-words { height: 1.4em; overflow: hidden; position: relative; }
.pre-word {
  font-family: var(--font-mono); text-transform: uppercase;
  letter-spacing: 0.42em; font-size: var(--text-sm);
  color: var(--c-text-3);
  position: absolute; inset: 0; display: grid; place-items: center;
  opacity: 0;
}
.pre-word.final { color: var(--c-text); letter-spacing: 0.3em; font-family: var(--font-display); text-transform: none; font-size: var(--text-lg); letter-spacing: 0.18em; }
.pre-bar { width: min(240px, 60vw); height: 1px; background: var(--c-line); margin: var(--space-8) auto 0; position: relative; overflow: hidden; }
.pre-bar i { position: absolute; inset: 0; width: 0; background: var(--c-gold); }

/* ---------------- HEADER ---------------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background var(--t-mid), border-color var(--t-mid), backdrop-filter var(--t-mid);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(8,9,11,0.72);
  backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--c-line-soft);
}
.header-inner { width: 100%; max-width: 1500px; margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }

.brand { display: flex; align-items: center; gap: var(--space-3); color: var(--c-text); }
.brand .brand-mark { width: auto; height: 34px; flex-shrink: 0; display: block; }
.brand-lockup { display: inline-flex; flex-direction: column; align-items: stretch; gap: 3px; width: max-content; }
.brand .brand-wordmark { width: auto; height: 17px; display: block; }
/* sub-label stretched to the exact width of the wordmark image above */
.brand .brand-sub {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--c-text-3);
  text-transform: uppercase;
  display: block;
  width: 100%;
  text-align: justify;
  text-align-last: justify;
  letter-spacing: 0;
}

/* Inline nav links retired in favour of a single sleek menu (see .menu-btn) */
.nav-main { display: none; }
.nav-main a {
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--c-text-2); position: relative; padding: 4px 0;
  transition: color var(--t-fast);
}
.nav-main a::after { content:""; position:absolute; left:0; bottom:-2px; height:1px; width:100%; background:var(--c-gold); transform:scaleX(0); transform-origin:right; transition:transform var(--t-mid); }
.nav-main a:hover, .nav-main a[aria-current="page"] { color: var(--c-text); }
.nav-main a:hover::after, .nav-main a[aria-current="page"]::after { transform:scaleX(1); transform-origin:left; }

.header-actions { display: flex; align-items: center; gap: var(--space-4); }

/* Sleek menu trigger — shown on every breakpoint */
.menu-btn {
  display: inline-flex; flex-direction: column; gap: 6px;
  align-items: flex-end; justify-content: center;
  width: 44px; height: 44px; z-index: 210; position: relative;
  background: none; border: 0; cursor: pointer; padding: 0;
  -webkit-tap-highlight-color: transparent;
}
.menu-btn span {
  display: block; height: 1.5px; background: var(--c-text);
  border-radius: 1px;
  transition: transform var(--t-mid), opacity var(--t-fast), width var(--t-mid), background var(--t-fast);
}
.menu-btn span:nth-child(1) { width: 26px; }
.menu-btn span:nth-child(2) { width: 18px; }
.menu-btn span:nth-child(3) { width: 26px; }
.menu-btn:hover span:nth-child(2) { width: 26px; }
/* morph to an X when the overlay is open */
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); width: 26px; }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); width: 26px; }

/* ---------------- MOBILE MENU ---------------- */
.mobile-menu {
  position: fixed; inset: 0; z-index: 190; background: var(--c-void);
  display: flex; flex-direction: column; padding: calc(var(--header-h) + var(--space-8)) var(--gutter) var(--space-8);
  transform: translateY(-100%); transition: transform 560ms var(--ease-out);
  visibility: hidden;
}
.mobile-menu.open { transform: translateY(0); visibility: visible; }
.mobile-menu nav { display: flex; flex-direction: column; gap: var(--space-2); flex: 1; justify-content: center; }
.mobile-menu nav { max-width: 1500px; width: 100%; margin-inline: auto; padding-inline: var(--gutter); }
.mobile-menu nav a {
  font-family: var(--font-display); font-size: clamp(2rem, 6vw, 3.6rem); font-weight: 300;
  color: var(--c-text-2); line-height: 1.12;
  padding: var(--space-2) 0; display: flex; align-items: baseline; gap: var(--space-5);
  transition: color var(--t-fast), transform var(--t-mid); width: fit-content;
}
.mobile-menu nav a:hover { color: var(--c-text); transform: translateX(10px); }
.mobile-menu nav a[aria-current="page"] { color: var(--c-text); }
.mobile-menu nav a .mm-num { font-family: var(--font-mono); font-size: 0.7rem; color: var(--c-text-3); }
.mm-cta { max-width: 1500px; width: 100%; margin-inline: auto; padding: var(--space-6) var(--gutter) 0; border-top: 1px solid var(--c-line); }
.mm-cta .btn { width: 100%; justify-content: center; }
@media (min-width: 720px) { .mm-cta .btn { width: auto; } }

/* ---------------- SCROLL PROGRESS ---------------- */
.scroll-progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: linear-gradient(90deg, var(--c-blue), var(--c-gold)); z-index: 300; }

/* ---------------- 3D CANVAS ---------------- */
#engine-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.canvas-fallback { position: fixed; inset: 0; z-index: 0; display: none; background: radial-gradient(60% 60% at 60% 40%, #14202b 0%, var(--c-void) 70%); }
.canvas-fallback.show { display: block; }
body.no-webgl #engine-canvas { display: none; }

/* ---------------- HERO ---------------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; z-index: 2; }
.hero .wrap { padding-block: var(--header-h) var(--space-16); }
.hero-eyebrow { margin-bottom: var(--space-6); }
.hero h1 { font-size: var(--text-hero); font-weight: 300; max-width: 16ch; }
.hero h1 em { font-style: normal; color: var(--c-gold); }
.hero .sub { margin-top: var(--space-8); max-width: 50ch; color: var(--c-text-2); font-size: var(--text-lg); }
.hero-ctas { margin-top: var(--space-10); display: flex; gap: var(--space-4); flex-wrap: wrap; }
.scroll-prompt {
  position: absolute; left: var(--gutter); bottom: var(--space-8);
  display: flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--c-text-3);
}
.scroll-prompt .dot { width: 14px; height: 22px; border: 1px solid var(--c-line); border-radius: var(--r-pill); position: relative; }
.scroll-prompt .dot::after { content:""; position:absolute; left:50%; top:5px; transform:translateX(-50%); width:2px; height:5px; background:var(--c-gold); border-radius:2px; animation: scrolldot 1.8s var(--ease-io) infinite; }
@keyframes scrolldot { 0%{opacity:0; transform:translate(-50%,0);} 30%{opacity:1;} 100%{opacity:0; transform:translate(-50%,8px);} }

/* ---------------- CHAPTERS ---------------- */
.chapter { position: relative; z-index: 2; min-height: 100svh; display: flex; align-items: center; padding-block: var(--space-24); }
.chapter-inner { max-width: 640px; }
.chapter.align-right .chapter-inner { margin-left: auto; }
.chapter .chapter-label { margin-bottom: var(--space-6); display: block; }
.chapter h2 { font-size: var(--text-2xl); font-weight: 300; max-width: 14ch; }
.chapter h2 em { font-style: normal; color: var(--c-gold); }
.chapter .body-copy { margin-top: var(--space-6); }
.chapter .chapter-cta { margin-top: var(--space-8); }

/* panel backing so text stays readable over canvas */
.glass-panel {
  background: linear-gradient(160deg, rgba(16,19,23,0.78), rgba(11,13,16,0.62));
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-lg);
  backdrop-filter: blur(8px);
  padding: clamp(1.5rem, 3vw, 2.75rem);
}

/* ---------- platform cards (chapter 02) ---------- */
.platform-cards { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-4); margin-top: var(--space-10); }
.p-card {
  border: 1px solid var(--c-line); border-radius: var(--r-md);
  padding: var(--space-6); background: rgba(16,19,23,0.55); cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.p-card:hover, .p-card.active { border-color: var(--c-blue); background: rgba(16,19,23,0.85); transform: translateY(-2px); }
.p-card .pc-idx { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-gold); }
.p-card h3 { font-family: var(--font-display); font-size: var(--text-lg); margin: var(--space-2) 0 var(--space-3); }
.p-card p { color: var(--c-text-3); font-size: var(--text-sm); }
.p-card .p-card-cta { margin-top: var(--space-4); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-blue); }

/* ---------- stat row ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-6); margin-top: var(--space-10); border-top: 1px solid var(--c-line); padding-top: var(--space-8); }
.stat .num { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--c-text); line-height: 1; }
.stat .lbl { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; color: var(--c-text-3); text-transform: uppercase; margin-top: var(--space-3); display: block; }

/* ---------- process flow ---------- */
.flow { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }
.flow span { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-text-2); border: 1px solid var(--c-line); padding: 0.5rem 0.9rem; border-radius: var(--r-pill); }
.flow span::after { content: "→"; margin-left: var(--space-3); color: var(--c-text-faint); }
.flow span:last-child::after { content: ""; margin: 0; }

/* ---------- leadership card ---------- */
.lead-card { display: grid; grid-template-columns: 200px 1fr; gap: var(--space-10); align-items: center; margin-top: var(--space-10); }
.lead-portrait { aspect-ratio: 3/4; border: 1px solid var(--c-line); border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--c-surface-2), var(--c-bg)); position: relative; overflow: hidden; display: grid; place-items: center; }
.lead-portrait .mono-mark { font-family: var(--font-display); font-size: 3rem; color: var(--c-line); }
.lead-portrait .lead-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }
.lead-quote { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 300; color: var(--c-text); line-height: 1.5; }
.lead-attr { margin-top: var(--space-6); }
.lead-attr .name { color: var(--c-text); font-family: var(--font-mono); font-size: var(--text-sm); letter-spacing: 0.1em; }
.lead-attr .role { color: var(--c-text-3); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; }

/* ---------------- PROJECT EXPLORER ---------------- */
.proj-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-5); margin-top: var(--space-10); }
.proj-card {
  position: relative; border: 1px solid var(--c-line); border-radius: var(--r-md);
  overflow: hidden; background: var(--c-surface); min-height: 380px;
  display: flex; flex-direction: column; justify-content: flex-end;
  transition: border-color var(--t-fast), transform var(--t-mid);
}
.proj-card:hover { border-color: var(--c-blue); transform: translateY(-4px); }
.proj-visual { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform 800ms var(--ease-out); }
.proj-card:hover .proj-visual { transform: scale(1.06); }
.proj-card::before { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(8,9,11,0.1) 30%, rgba(8,9,11,0.9) 100%); z-index:1; }
.proj-body { position: relative; z-index: 2; padding: var(--space-6); }
.proj-status { display: inline-flex; align-items: center; gap: var(--space-2); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-text); margin-bottom: var(--space-3); }
.proj-status .pip { width: 7px; height: 7px; border-radius: 50%; background: var(--c-gold); }
.proj-status.s-pipeline .pip { background: var(--c-blue); }
.proj-status.s-completed .pip { background: var(--c-gold); }
.proj-status.s-progress .pip { background: var(--c-copper); }
.proj-card h3 { font-family: var(--font-display); font-size: var(--text-xl); }
.proj-meta { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-text-2); letter-spacing: 0.08em; margin-top: var(--space-2); text-transform: uppercase; }
.proj-desc { color: var(--c-text-2); font-size: var(--text-sm); margin-top: var(--space-4); max-height: 0; opacity: 0; overflow: hidden; transition: max-height var(--t-mid), opacity var(--t-mid), margin var(--t-mid); }
.proj-card:hover .proj-desc { max-height: 120px; opacity: 1; }

/* ---------------- DISCLAIMER BAND ---------------- */
.disclaimer-band { position: relative; z-index: 2; background: var(--c-bg); border-top: 1px solid var(--c-line-soft); border-bottom: 1px solid var(--c-line-soft); }
.disclaimer-band .wrap { padding-block: var(--space-8); }
.disclaimer-band p { font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1.8; color: var(--c-text-3); letter-spacing: 0.04em; max-width: 88ch; }

/* ---------------- FOOTER ---------------- */
.site-footer { position: relative; z-index: 2; background: var(--c-void); border-top: 1px solid var(--c-line); }
.site-footer .wrap { padding-block: var(--space-24) var(--space-12); }
.footer-top { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: var(--space-10); }
.footer-brand .brand { margin-bottom: var(--space-6); }
.footer-brand p { color: var(--c-text-3); font-size: var(--text-sm); max-width: 34ch; }
.footer-col h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.18em; color: var(--c-text); margin-bottom: var(--space-5); font-weight: 400; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { color: var(--c-text-3); font-size: var(--text-sm); transition: color var(--t-fast); }
.footer-col a:hover { color: var(--c-text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: var(--space-6); flex-wrap: wrap; margin-top: var(--space-16); padding-top: var(--space-8); border-top: 1px solid var(--c-line-soft); }
.footer-bottom p, .footer-bottom a { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-text-faint); letter-spacing: 0.06em; }
.footer-legal { display: flex; gap: var(--space-6); flex-wrap: wrap; }
.footer-legal a:hover { color: var(--c-text-2); }

/* ---------------- SECTION HELPERS (subpages) ---------------- */
.page-hero { position: relative; z-index: 2; min-height: 78svh; display: flex; align-items: flex-end; padding-bottom: var(--space-20); }
.page-hero .wrap { padding-top: calc(var(--header-h) + var(--space-16)); }
.page-hero h1 { font-size: var(--text-3xl); font-weight: 300; max-width: 18ch; }
.page-hero h1 em { font-style: normal; color: var(--c-gold); }
.page-hero .sub { margin-top: var(--space-6); max-width: 52ch; color: var(--c-text-2); font-size: var(--text-lg); }

.section { position: relative; z-index: 2; padding-block: clamp(4rem, 9vw, 9rem); }
.section.bg { background: var(--c-bg); border-block: 1px solid var(--c-line-soft); }
.section-head { max-width: 60ch; margin-bottom: var(--space-12); }
.section-head h2 { font-size: var(--text-2xl); font-weight: 300; }
.section-head .eyebrow { display: block; margin-bottom: var(--space-5); }

.col-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: start; }
.col-2.lean { grid-template-columns: 0.8fr 1.2fr; }

.cap-cards { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-5); }
.cap-card { border: 1px solid var(--c-line); border-radius: var(--r-md); padding: var(--space-8); background: var(--c-surface); }
.cap-card .idx { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-gold); }
.cap-card h3 { font-family: var(--font-display); font-size: var(--text-lg); margin: var(--space-3) 0; }
.cap-card p { color: var(--c-text-3); font-size: var(--text-sm); }

.list-clean { list-style: none; display: flex; flex-direction: column; gap: var(--space-4); }
.list-clean li { display: flex; gap: var(--space-4); align-items: baseline; color: var(--c-text-2); padding-bottom: var(--space-4); border-bottom: 1px solid var(--c-line-soft); }
.list-clean li .n { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-gold); min-width: 2.5em; }

/* filters */
.proj-filters { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-8); }
.filter-btn { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-text-3); border: 1px solid var(--c-line); border-radius: var(--r-pill); padding: 0.5rem 1rem; transition: all var(--t-fast); }
.filter-btn:hover { color: var(--c-text); }
.filter-btn.active { color: var(--c-void); background: var(--c-text); border-color: var(--c-text); }

/* ---------------- CONTACT FORM ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); }
.form-field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-6); }
.form-field label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-text-2); }
.form-field input, .form-field select, .form-field textarea {
  background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-md);
  padding: 0.9rem 1rem; color: var(--c-text); font-size: var(--text-base); font-weight: 300;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--c-blue); outline: none; }
.form-field textarea { resize: vertical; min-height: 130px; }
.form-micro { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-text-faint); margin-top: var(--space-4); }
.form-success { display: none; padding: var(--space-6); border: 1px solid var(--c-blue); border-radius: var(--r-md); background: rgba(94,138,166,0.08); color: var(--c-text); margin-top: var(--space-4); }
.form-success.show { display: block; }
.contact-detail { margin-bottom: var(--space-8); }
.contact-detail h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.16em; color: var(--c-text-3); margin-bottom: var(--space-2); }
.contact-detail p, .contact-detail a { color: var(--c-text); font-size: var(--text-base); }
.contact-detail a:hover { color: var(--c-gold); }

/* mobile sticky CTA */
.sticky-cta { position: fixed; left: 0; right: 0; bottom: 0; z-index: 150; padding: var(--space-3) var(--gutter) calc(var(--space-3) + env(safe-area-inset-bottom)); background: rgba(8,9,11,0.9); backdrop-filter: blur(12px); border-top: 1px solid var(--c-line); display: none; }
.sticky-cta .btn { width: 100%; justify-content: center; }

/* =============== RESPONSIVE =============== */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .col-2, .col-2.lean { grid-template-columns: 1fr; gap: var(--space-10); }
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-10); }
}
@media (max-width: 860px) {
  .platform-cards, .cap-cards { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .proj-grid { grid-template-columns: 1fr; }
  .lead-card { grid-template-columns: 1fr; }
  .lead-portrait { max-width: 200px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .chapter h2 { max-width: none; }
  .proj-card { min-height: 320px; }
  .proj-desc { max-height: 120px; opacity: 1; }
  .sticky-cta.enable { display: block; }
  body.has-sticky { padding-bottom: 78px; }
}
@media (max-width: 520px) {
  .footer-top { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  /* let long in-content CTAs wrap & fit narrow viewports */
  .chapter-cta .btn { white-space: normal; text-align: center; max-width: 100%; padding-inline: 1.25rem; }
  .chapter-cta .btn .arrow { flex-shrink: 0; }
}