/* ============================================================
   RIVE v2 — Growth consulting, Cuberto-grade
   Canvas: warm off-white · Ink: near-black · Accent: coral
   Type: Satoshi (grotesk) + Instrument Serif (italic accents)
   All colors via tokens. Motion honors prefers-reduced-motion.
   ============================================================ */

:root {
  --bg:        #F4F2ED;
  --bg-card:   #FFFFFF;
  --ink:       #0B0B0A;
  --ink-soft:  #55534C;
  --muted:     #8A8779;
  --line:      #DDDAD0;
  --accent:    #F04018;
  --accent-deep: #C93511; /* coral for small text on light bg — 4.5:1+ */
  --white:     #FFFFFF;

  --font-sans: "Satoshi", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;

  /* Type scale — display is the design */
  --fs-hero: clamp(3rem, 11vw, 10rem);
  --fs-xl:   clamp(2.4rem, 6.5vw, 5.5rem);
  --fs-lg:   clamp(1.9rem, 4vw, 3.4rem);
  --fs-md:   clamp(1.35rem, 2.2vw, 1.9rem);
  --fs-body: 1.125rem;
  --fs-sm:   0.9375rem;
  --fs-xs:   0.8125rem;

  --s-1: 8px; --s-2: 16px; --s-3: 24px; --s-4: 40px; --s-5: 64px; --s-6: 104px; --s-7: 160px;

  --r-pill: 999px; --r-card: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 250ms;
  --t-slow: 800ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  overflow-x: clip;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--accent); color: var(--white); }

:focus-visible { outline: 3px solid var(--accent-deep); outline-offset: 4px; border-radius: 4px; }

.skip-link { position: absolute; left: -9999px; top: 0; z-index: 300; background: var(--ink); color: var(--white); padding: 12px 20px; }
.skip-link:focus { left: 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Layout ---------- */
.container { width: min(1440px, 100% - clamp(32px, 6vw, 96px)); margin-inline: auto; }
.section { padding-block: clamp(72px, 10vw, 160px); }

/* ---------- Typography ---------- */
.display-hero, .display-xl, .display-lg {
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 0.98;
  color: var(--ink);
}
.display-hero { font-size: var(--fs-hero); }
.display-xl { font-size: var(--fs-xl); letter-spacing: -0.03em; line-height: 1.02; }
.display-lg { font-size: var(--fs-lg); letter-spacing: -0.02em; line-height: 1.06; }

/* Italic serif accent inside grotesk headlines — the signature move */
.serif-it {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: inherit;
}
.accent { color: var(--accent); }

.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-soft);
}
.eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--accent); }

.lede { font-size: var(--fs-md); font-weight: 500; line-height: 1.4; letter-spacing: -0.01em; color: var(--ink); max-width: 30ch; }
.body-max { max-width: 62ch; }
.text-soft { color: var(--ink-soft); }
.small { font-size: var(--fs-sm); }

/* ---------- Mask reveals (line-by-line) ---------- */
.mask { overflow: hidden; display: block; }
.mask > .mask-inner {
  display: block;
  transform: translateY(115%);
  transition: transform var(--t-slow) var(--ease-expo);
  transition-delay: var(--d, 0ms);
  will-change: transform;
}
.in-view .mask > .mask-inner, .mask.in-view > .mask-inner { transform: translateY(0); }

.fade { opacity: 0; transform: translateY(28px); transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease); transition-delay: var(--d, 0ms); }
.fade.in-view, .in-view > .fade { opacity: 1; transform: none; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding-block: 20px;
  transition: padding var(--t-fast) ease, background-color var(--t-fast) ease, box-shadow var(--t-fast) ease;
}
.site-header.is-scrolled {
  padding-block: 12px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { height: 40px; width: auto; }
.brand .wordmark { font-weight: 900; font-size: 1.5rem; letter-spacing: -0.04em; }
.brand .wordmark em { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--accent); }

.nav-links { display: none; list-style: none; gap: clamp(24px, 3vw, 48px); align-items: center; }
.nav-links a { font-weight: 700; font-size: var(--fs-sm); position: relative; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px; height: 2px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.nav-links a:hover::after, .nav-links a:focus-visible::after { transform: scaleX(1); }
@media (min-width: 900px) { .nav-links { display: flex; } }
.site-header .container > .btn { display: none; }
@media (min-width: 900px) { .site-header .container > .btn { display: inline-flex; } }

/* ---------- Buttons — pill, magnetic ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 56px; padding: 16px 34px;
  border-radius: var(--r-pill);
  background: var(--ink); color: var(--white);
  font-weight: 700; font-size: 1rem; letter-spacing: -0.01em;
  overflow: hidden;
  transition: color var(--t-fast) ease, transform var(--t-fast) var(--ease);
  will-change: transform;
}
.btn .btn-fill {
  position: absolute; inset: 0; border-radius: inherit;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform 420ms var(--ease-expo);
}
.btn:hover .btn-fill, .btn:focus-visible .btn-fill { transform: translateY(0); }
.btn > span:not(.btn-fill), .btn > svg { position: relative; z-index: 1; }
.btn:hover { color: var(--white); }

.btn--accent { background: var(--accent); color: var(--ink); }
.btn--accent .btn-fill { background: var(--ink); }
.btn--outline { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--ink); }
.btn--outline .btn-fill { background: var(--ink); }
.btn--outline:hover { color: var(--white); }
.btn--big { min-height: 72px; padding: 22px 48px; font-size: 1.2rem; }
.btn--on-dark { background: var(--white); color: var(--ink); }
.btn--on-dark .btn-fill { background: var(--accent); }
.btn--on-dark:hover { color: var(--white); }

.wa-ic { width: 20px; height: 20px; flex: 0 0 auto; }

/* ---------- Menu toggle + overlay ---------- */
.menu-toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 6px; width: 52px; height: 52px; padding: 14px; border-radius: var(--r-pill); }
.menu-toggle span { display: block; height: 2px; width: 100%; background: var(--ink); transition: transform var(--t-fast) ease, opacity var(--t-fast) ease; }
@media (min-width: 900px) { .menu-toggle { display: none; } }
.menu-open .menu-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--bg);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 120px clamp(20px, 6vw, 48px) 40px;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 600ms var(--ease-expo);
}
.menu-open .mobile-menu { clip-path: inset(0 0 0% 0); }
.mobile-menu ul { list-style: none; display: grid; gap: 8px; }
.mobile-menu ul a { font-size: clamp(2.4rem, 9vw, 4rem); font-weight: 900; letter-spacing: -0.03em; line-height: 1.15; display: inline-block; }
.mobile-menu ul a em { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--accent); }
.mobile-menu .menu-contact { display: grid; gap: 10px; font-size: var(--fs-sm); color: var(--ink-soft); }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; white-space: nowrap; user-select: none; }
.marquee-track { display: inline-flex; gap: 0; animation: marquee 26s linear infinite; will-change: transform; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee-item {
  display: inline-flex; align-items: center; gap: 28px; padding-right: 28px;
  font-size: clamp(1.1rem, 2.4vw, 1.7rem); font-weight: 700; letter-spacing: -0.01em;
}
.marquee-item .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.marquee--big .marquee-item { font-size: clamp(2.6rem, 7vw, 6rem); font-weight: 900; letter-spacing: -0.03em; padding-right: 48px; gap: 48px; }
.marquee--big .marquee-item .dot { width: 18px; height: 18px; }
.marquee--outline .marquee-item { color: transparent; -webkit-text-stroke: 1.5px var(--ink); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: clamp(140px, 20vh, 220px); padding-bottom: 0; }
.hero h1 { max-width: 12ch; }
.hero .hero-sub { display: grid; gap: var(--s-4); margin-top: clamp(40px, 6vw, 80px); }
@media (min-width: 900px) {
  .hero .hero-sub { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: end; }
}
.hero .hero-sub p { font-size: var(--fs-md); line-height: 1.4; letter-spacing: -0.01em; max-width: 34ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-note { margin-top: var(--s-2); font-size: var(--fs-xs); color: var(--ink-soft); letter-spacing: 0.04em; }
.hero-marquee { margin-top: clamp(56px, 9vw, 120px); border-block: 1px solid var(--line); padding-block: 18px; }

/* ---------- Manifesto (big statement) ---------- */
.manifesto p.statement {
  font-size: clamp(1.7rem, 3.6vw, 3.1rem);
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.18;
  max-width: 26ch;
}
.manifesto .statement .dim { color: var(--muted); }
.manifesto-grid { display: grid; gap: var(--s-5); }
@media (min-width: 900px) { .manifesto-grid { grid-template-columns: 1fr 1fr; } .manifesto-grid > :last-child { padding-top: 8px; } }
.manifesto-facts { display: grid; gap: var(--s-3); align-content: start; }
.manifesto-facts .fact { border-top: 1px solid var(--line); padding-top: var(--s-3); }
.manifesto-facts .fact strong { display: block; font-size: var(--fs-md); letter-spacing: -0.02em; font-weight: 900; }
.manifesto-facts .fact span { color: var(--ink-soft); font-size: var(--fs-sm); max-width: 44ch; display: block; margin-top: 6px; }

/* ---------- Sticky stack (the system) ---------- */
.stack { display: grid; gap: var(--s-3); }
.stack-card {
  position: sticky;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: clamp(28px, 5vw, 64px);
  display: grid; gap: var(--s-3);
  box-shadow: 0 24px 60px rgba(11, 11, 10, 0.06);
}
.stack-card:nth-child(1) { top: 96px; }
.stack-card:nth-child(2) { top: 120px; }
.stack-card:nth-child(3) { top: 144px; }
@media (min-width: 900px) {
  .stack-card { grid-template-columns: auto 1fr 1.2fr; align-items: start; gap: clamp(24px, 4vw, 64px); }
}
.stack-num {
  font-family: var(--font-serif); font-style: italic;
  font-size: clamp(2.6rem, 5vw, 4.4rem); line-height: 1; color: var(--accent);
}
.stack-card h3 { font-size: var(--fs-lg); font-weight: 900; letter-spacing: -0.02em; line-height: 1; }
.stack-card .stack-body p { color: var(--ink-soft); max-width: 46ch; }
.stack-card .stack-body .get { margin-top: var(--s-2); font-weight: 700; color: var(--ink); }
.stack-card--accent { background: var(--ink); border-color: var(--ink); }
.stack-card--accent h3, .stack-card--accent .stack-body .get { color: var(--white); }
.stack-card--accent .stack-body p { color: rgba(244, 242, 237, 0.72); }

/* ---------- Proof ---------- */
.proof { border-block: 1px solid var(--line); }
.proof-grid { display: grid; gap: var(--s-4); }
@media (min-width: 800px) { .proof-grid { grid-template-columns: repeat(4, 1fr); } }
.proof-item { border-left: 1px solid var(--line); padding-left: var(--s-3); }
.proof-item:first-child { border-left: 0; padding-left: 0; }
@media (max-width: 799px) { .proof-item { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: var(--s-3); } .proof-item:first-child { border-top: 0; padding-top: 0; } }
.proof-value { font-size: clamp(3rem, 6vw, 5rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1; }
.proof-value .unit { font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: 0.5em; color: var(--accent); letter-spacing: 0; }
.proof-label { margin-top: 10px; color: var(--ink-soft); font-size: var(--fs-sm); max-width: 24ch; }

.case-strip { display: grid; gap: var(--s-3); margin-top: var(--s-6); }
@media (min-width: 900px) { .case-strip { grid-template-columns: 1fr 1fr; } }
.case-card { border: 1px solid var(--line); border-radius: var(--r-card); padding: clamp(24px, 3.5vw, 44px); background: var(--bg-card); }
.case-card .case-tag { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent-deep); }
.case-card p { margin-top: var(--s-2); font-size: var(--fs-md); font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; max-width: 30ch; }
.case-card p .res { color: var(--accent); }
.case-card .case-note { margin-top: var(--s-2); font-size: var(--fs-sm); font-weight: 500; color: var(--ink-soft); }

/* ---------- Industry rows ---------- */
.rows { border-top: 1px solid var(--line); }
.row-link {
  position: relative; display: block; overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding: clamp(22px, 3.6vw, 44px) 0;
}
.row-link .row-inner {
  position: relative; z-index: 1;
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--s-3);
  transition: transform 450ms var(--ease-expo), color var(--t-fast) ease;
}
.row-link .row-name { font-size: clamp(1.8rem, 4.6vw, 4rem); font-weight: 900; letter-spacing: -0.03em; line-height: 1; }
.row-link .row-leak { font-size: var(--fs-sm); color: var(--ink-soft); max-width: 30ch; text-align: right; transition: color var(--t-fast) ease; }
.row-link .row-arrow { font-size: clamp(1.6rem, 3vw, 2.6rem); line-height: 1; transform: translateX(-10px); opacity: 0; transition: transform 450ms var(--ease-expo), opacity var(--t-fast) ease; }
.row-link::before {
  content: ""; position: absolute; inset: 0;
  background: var(--ink);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform 450ms var(--ease-expo);
}
.row-link:hover::before, .row-link:focus-visible::before { transform: scaleY(1); }
.row-link:hover .row-inner, .row-link:focus-visible .row-inner { color: var(--white); transform: translateX(clamp(10px, 2vw, 28px)); }
.row-link:hover .row-leak, .row-link:focus-visible .row-leak { color: rgba(244, 242, 237, 0.7); }
.row-link:hover .row-arrow, .row-link:focus-visible .row-arrow { transform: none; opacity: 1; }

/* ---------- Diagnostic ---------- */
.diagnostic-shell {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--r-card);
  box-shadow: 0 24px 60px rgba(11, 11, 10, 0.07);
  padding: clamp(24px, 4vw, 56px); max-width: 820px; margin: var(--s-5) auto 0;
}
.diag-progress { height: 4px; background: var(--bg); border-radius: 2px; overflow: hidden; margin-bottom: var(--s-2); }
.diag-progress-fill { height: 100%; width: 0%; background: var(--accent); transition: width 400ms var(--ease); }
.diag-progress-label { font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; font-weight: 700; color: var(--ink-soft); margin-bottom: var(--s-4); }

.diag-step { display: none; }
.diag-step.is-active { display: block; animation: stepIn 420ms var(--ease-expo); }
@keyframes stepIn { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
.diag-step h3 { font-size: var(--fs-lg); font-weight: 900; letter-spacing: -0.02em; line-height: 1.08; margin-bottom: var(--s-4); max-width: 20ch; }

.diag-options { display: grid; gap: 12px; }
.diag-option {
  text-align: left; width: 100%; padding: 18px 24px; min-height: 60px;
  border: 1.5px solid var(--line); border-radius: 16px;
  font-size: 1.05rem; font-weight: 500; color: var(--ink);
  transition: border-color var(--t-fast) ease, background-color var(--t-fast) ease, transform var(--t-fast) var(--ease);
  display: flex; align-items: center; gap: 14px;
}
.diag-option::before { content: ""; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line); flex: 0 0 auto; transition: background-color var(--t-fast) ease, border-color var(--t-fast) ease; }
.diag-option:hover { border-color: var(--ink); transform: translateX(4px); }
.diag-option[aria-pressed="true"] { border-color: var(--ink); background: var(--bg); font-weight: 700; }
.diag-option[aria-pressed="true"]::before { background: var(--accent); border-color: var(--accent); }
.diag-back { color: var(--ink-soft); font-size: var(--fs-sm); font-weight: 700; margin-top: var(--s-3); padding: 10px 0; }
.diag-back:hover { color: var(--ink); }

.diag-result .score-big { font-size: clamp(4rem, 9vw, 7rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1; }
.diag-result .score-big .of { font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: 0.32em; color: var(--muted); letter-spacing: 0; }
.score-bars { display: grid; gap: var(--s-2); margin: var(--s-4) 0; }
.score-bar-label { display: flex; justify-content: space-between; font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 6px; }
.score-bar-track { height: 8px; background: var(--bg); border-radius: 4px; overflow: hidden; }
.score-bar-fill { height: 100%; width: 0%; border-radius: 4px; background: var(--ink); transition: width 900ms var(--ease) 200ms; }
.score-bar-fill.is-lowest { background: var(--accent); }
.diag-leak { border-left: 3px solid var(--accent); padding: var(--s-2) var(--s-3); background: var(--bg); border-radius: 0 14px 14px 0; margin-bottom: var(--s-3); }
.diag-leak p { color: var(--ink-soft); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 900px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: var(--s-3);
  padding: clamp(20px, 3vw, 32px) 0; text-align: left;
  font-size: var(--fs-md); font-weight: 700; letter-spacing: -0.015em;
  transition: color var(--t-fast) ease;
}
.faq-q:hover { color: var(--accent-deep); }
.faq-icon { flex: 0 0 auto; width: 30px; height: 30px; position: relative; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; left: 50%; top: 50%; width: 16px; height: 2px; background: currentColor; transform: translate(-50%, -50%); transition: transform var(--t-fast) ease; }
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-q[aria-expanded="true"] .faq-icon::after { transform: translate(-50%, -50%) rotate(0); }
.faq-a { overflow: hidden; max-height: 0; transition: max-height 400ms var(--ease); }
.faq-a-inner { padding: 0 0 var(--s-4); color: var(--ink-soft); max-width: 62ch; }

/* ---------- Contact / footer ---------- */
.footer-cta {
  background: var(--ink); color: var(--white);
  border-radius: var(--r-card) var(--r-card) 0 0;
  margin-top: var(--s-6);
  padding-block: clamp(80px, 12vw, 180px) 0;
}
.footer-cta .display-hero { color: var(--white); max-width: 10ch; }
.footer-cta .display-hero .serif-it { color: var(--accent); }
.footer-sub { margin-top: var(--s-4); display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.footer-note { color: rgba(244, 242, 237, 0.6); font-size: var(--fs-sm); max-width: 44ch; }

.footer-contacts { display: grid; gap: var(--s-4); margin-top: clamp(64px, 9vw, 120px); padding-top: var(--s-4); border-top: 1px solid rgba(244, 242, 237, 0.16); }
@media (min-width: 800px) { .footer-contacts { grid-template-columns: repeat(3, 1fr); } }
.footer-contacts h4 { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(244, 242, 237, 0.5); margin-bottom: 14px; }
.footer-contacts a, .footer-contacts p { color: var(--white); font-size: 1.05rem; font-weight: 500; }
.footer-contacts ul { list-style: none; display: grid; gap: 8px; }
.footer-contacts a { position: relative; }
.footer-contacts a::after { content: ""; position: absolute; left: 0; bottom: -3px; height: 1px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--t-fast) var(--ease); }
.footer-contacts a:hover::after { transform: scaleX(1); }

.footer-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-2); padding-block: var(--s-4); margin-top: var(--s-5); border-top: 1px solid rgba(244, 242, 237, 0.16); font-size: var(--fs-xs); color: rgba(244, 242, 237, 0.5); }

/* ---------- Sticky mobile WhatsApp bar ---------- */
.sticky-book {
  position: fixed; inset: auto 0 0 0; z-index: 80;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 -1px 0 var(--line);
  transform: translateY(110%); transition: transform 350ms var(--ease-expo);
}
.sticky-book.is-visible { transform: none; }
.sticky-book .btn { width: 100%; }
@media (min-width: 900px) { .sticky-book { display: none; } }

/* ---------- Custom cursor (fine pointers only) ---------- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 200; pointer-events: none;
  border-radius: 50%;
  display: none;
}
@media (hover: hover) and (pointer: fine) {
  .cursor-dot, .cursor-ring { display: block; }
}
.cursor-dot { width: 8px; height: 8px; background: var(--accent); transform: translate(-50%, -50%); }
.cursor-ring {
  width: 40px; height: 40px;
  border: 1.5px solid var(--ink);
  opacity: 0.35;
  transform: translate(-50%, -50%);
  transition: width 300ms var(--ease), height 300ms var(--ease), opacity 300ms ease, background-color 300ms ease;
}
.cursor-ring.is-hover { width: 72px; height: 72px; opacity: 1; border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }

/* ---------- Page hero (industry pages) ---------- */
.page-hero { padding-top: clamp(140px, 18vh, 200px); }
.page-hero h1 { font-size: clamp(2.6rem, 7.5vw, 6.5rem); font-weight: 900; letter-spacing: -0.035em; line-height: 0.98; max-width: 14ch; }
.back-link { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-sm); font-weight: 700; color: var(--ink-soft); margin-bottom: var(--s-4); transition: color var(--t-fast) ease; }
.back-link:hover { color: var(--accent-deep); }

/* Symptoms / leak lists on industry pages */
.num-list { list-style: none; counter-reset: item; display: grid; gap: 0; border-top: 1px solid var(--line); }
.num-list li { counter-increment: item; display: grid; grid-template-columns: auto 1fr; gap: var(--s-3); padding: var(--s-4) 0; border-bottom: 1px solid var(--line); align-items: start; }
.num-list li::before { content: "0" counter(item); font-family: var(--font-serif); font-style: italic; font-size: var(--fs-lg); line-height: 1; color: var(--accent); }
.num-list h3 { font-size: var(--fs-md); font-weight: 900; letter-spacing: -0.02em; }
.num-list p { color: var(--ink-soft); margin-top: 6px; max-width: 56ch; }

.grid-2col { display: grid; gap: var(--s-5); }
@media (min-width: 900px) { .grid-2col { grid-template-columns: 1fr 1fr; align-items: start; } }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .mask > .mask-inner { transform: none !important; }
  .fade { opacity: 1 !important; transform: none !important; }
  .marquee-track { animation: none !important; }
  .cursor-dot, .cursor-ring { display: none !important; }
  .diag-progress-fill, .score-bar-fill { transition: none !important; }
}

@media print { .site-header, .sticky-book, .mobile-menu, .cursor-dot, .cursor-ring { display: none !important; } }