/* CognitionLab — research-lab notebook design */
:root {
  --lab-white: #FFFFFF;
  --research-violet: #7C3AED;
  --bio-teal: #14B8A6;
  --cool-grey: #E5E7EB;
  --text: #111827;
  --text-muted: #6B7280;
  --violet-light: #A78BFA;
  --teal-dark: #0D9488;
  --violet-dark: #6D28D9;
  --notebook-line: rgba(124, 58, 237, 0.06);
  --margin-line: rgba(124, 58, 237, 0.35);
  --shadow: rgba(17, 24, 39, 0.08);
  --font-head: 'Libre Baskerville', Georgia, serif;
  --font-body: 'Work Sans', 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--lab-white);
  line-height: 1.65;
  overflow-x: hidden;
  background-image:
    linear-gradient(var(--notebook-line) 1px, transparent 1px);
  background-size: 100% 28px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--research-violet); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--bio-teal); }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Header ── */
.lab-header {
  background: var(--lab-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--cool-grey);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.lab-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-decoration: none;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border: 2px solid var(--research-violet);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  position: relative;
  flex-shrink: 0;
}

.logo-icon::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bio-teal);
}

.logo-icon::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 10px;
  background: var(--research-violet);
}

.logo-name {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-tagline {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav ul { display: flex; list-style: none; gap: 0.15rem; flex-wrap: wrap; }
.main-nav a {
  color: var(--text);
  padding: 0.4rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--cool-grey);
  color: var(--research-violet);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--cool-grey);
  border-radius: 4px;
  cursor: pointer;
  padding: 0.45rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  text-decoration: none;
}

.btn-teal {
  background: var(--bio-teal);
  color: var(--lab-white);
  border-color: var(--bio-teal);
}
.btn-teal:hover {
  background: var(--research-violet);
  border-color: var(--research-violet);
  color: var(--lab-white);
}

.btn-outline {
  background: transparent;
  color: var(--research-violet);
  border-color: var(--research-violet);
}
.btn-outline:hover {
  background: var(--research-violet);
  color: var(--lab-white);
}

.btn-white {
  background: var(--lab-white);
  color: var(--bio-teal);
  border-color: var(--lab-white);
}
.btn-white:hover {
  background: var(--research-violet);
  color: var(--lab-white);
  border-color: var(--research-violet);
}

.header-cta { white-space: nowrap; }

/* ── Experiment labels ── */
.exp-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--research-violet);
  background: rgba(124, 58, 237, 0.08);
  border: 1px dashed var(--research-violet);
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
}

.specimen-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--lab-white);
  background: var(--bio-teal);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bio-teal);
  margin-bottom: 0.5rem;
}

.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.75rem; }
.section-lead { color: var(--text-muted); max-width: 640px; margin-bottom: 2rem; }

/* ── Notebook card ── */
.notebook-card {
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  border-left: 3px solid var(--margin-line);
  border-radius: 2px;
  padding: 1.5rem;
  position: relative;
  box-shadow: 0 2px 8px var(--shadow);
}

.notebook-card::before {
  content: '';
  position: absolute;
  left: 48px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--margin-line);
  pointer-events: none;
}

/* ── Hero ── */
.hero {
  padding: 4rem 0 5rem;
  position: relative;
  border-bottom: 1px solid var(--cool-grey);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  margin: 0.75rem 0 1rem;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 520px;
}

.hero-tagline {
  font-family: var(--font-head);
  font-style: italic;
  color: var(--research-violet);
  margin-bottom: 1.75rem;
  font-size: 1.05rem;
}

.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.hero-visual {
  position: relative;
}

.hero-visual img {
  border-radius: 2px;
  border: 1px solid var(--cool-grey);
  box-shadow: 8px 8px 0 var(--cool-grey);
}

.hero-sticker {
  position: absolute;
  bottom: -12px;
  left: -12px;
  background: var(--lab-white);
  border: 1px dashed var(--research-violet);
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--research-violet);
}

/* ── Timeline band ── */
.timeline-band {
  background: var(--cool-grey);
  padding: 2.5rem 0;
  border-bottom: 1px solid #D1D5DB;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.timeline-item {
  text-align: center;
  padding: 1.25rem;
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  border-top: 3px solid var(--bio-teal);
}

.timeline-item:nth-child(2) { border-top-color: var(--research-violet); }
.timeline-item:nth-child(3) { border-top-color: var(--text); }

.timeline-duration {
  font-family: var(--font-head);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--research-violet);
  margin-bottom: 0.35rem;
}

.timeline-item h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.timeline-item p { font-size: 0.88rem; color: var(--text-muted); }

/* ── Sections ── */
.lab-section { padding: 4rem 0; }
.lab-section.alt { background: rgba(229, 231, 235, 0.35); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

/* ── Package cards ── */
.package-card {
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  padding: 1.5rem;
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.package-card:hover {
  border-color: var(--bio-teal);
  box-shadow: 0 4px 16px var(--shadow);
}

.package-card .exp-label { margin-bottom: 0.75rem; }
.package-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.package-card p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 1rem; }

.package-meta {
  list-style: none;
  font-size: 0.82rem;
  margin-bottom: 1.25rem;
}
.package-meta li { padding: 0.25rem 0; border-bottom: 1px dotted var(--cool-grey); }
.package-meta b { color: var(--text); }

.package-price {
  font-family: var(--font-head);
  font-size: 1.35rem;
  color: var(--research-violet);
  margin-bottom: 1rem;
}
.package-price span { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-body); }

/* ── Requirements strip ── */
.req-strip {
  background: var(--text);
  color: var(--lab-white);
  padding: 2rem 0;
}

.req-strip h2 {
  color: var(--lab-white);
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.req-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  list-style: none;
}

.req-list li {
  font-size: 0.88rem;
  padding-left: 1.25rem;
  position: relative;
}

.req-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--bio-teal);
  font-weight: 700;
}

/* ── Process steps ── */
.process-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  position: relative;
}

.process-step {
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  padding: 1.25rem 1rem;
  text-align: center;
  position: relative;
}

.process-step .exp-label {
  display: block;
  margin-bottom: 0.65rem;
  font-size: 0.65rem;
}

.process-step h3 { font-size: 0.95rem; margin-bottom: 0.35rem; }
.process-step p { font-size: 0.8rem; color: var(--text-muted); }

.process-step::after {
  content: '→';
  position: absolute;
  right: -0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--bio-teal);
  font-size: 1.1rem;
  z-index: 1;
}

.process-step:last-child::after { display: none; }

/* ── Service blocks ── */
.service-block {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  border-left: 4px solid var(--bio-teal);
}

.service-block:nth-child(even) { border-left-color: var(--research-violet); }

.service-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cool-grey);
  line-height: 1;
  flex-shrink: 0;
}

.service-block h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.service-block p { font-size: 0.88rem; color: var(--text-muted); }

/* ── Testimonials (lab notes) ── */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.lab-note {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  padding: 1.5rem;
  position: relative;
  transform: rotate(-0.5deg);
  font-size: 0.9rem;
}

.lab-note:nth-child(even) { transform: rotate(0.5deg); background: #F0FDFA; border-color: #99F6E4; }
.lab-note:nth-child(3) { transform: rotate(-0.3deg); }

.lab-note::before {
  content: 'Lab Note';
  position: absolute;
  top: -10px;
  left: 12px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--research-violet);
  color: var(--lab-white);
  padding: 0.15rem 0.5rem;
}

.lab-note blockquote {
  font-style: italic;
  margin-bottom: 0.75rem;
  line-height: 1.55;
}

.lab-note cite {
  font-style: normal;
  font-size: 0.82rem;
  color: var(--text-muted);
  display: block;
}

.lab-note cite strong { color: var(--text); }

/* ── CTA ── */
.cta-teal {
  background: var(--bio-teal);
  color: var(--lab-white);
  padding: 3.5rem 0;
  text-align: center;
}

.cta-teal h2 { color: var(--lab-white); font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 0.75rem; }
.cta-teal p { opacity: 0.92; max-width: 520px; margin: 0 auto 1.5rem; font-size: 1.02rem; }

/* ── Innovation note ── */
.innovation-note {
  padding: 2.5rem 0;
  border-top: 1px solid var(--cool-grey);
}

.innovation-note .notebook-card {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.innovation-note img {
  width: 200px;
  flex-shrink: 0;
  border-radius: 2px;
  border: 1px solid var(--cool-grey);
}

/* ── Page hero ── */
.page-hero {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--cool-grey);
  background: rgba(229, 231, 235, 0.25);
}

.breadcrumb {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--research-violet); }

.page-hero h1 { font-size: clamp(1.75rem, 3.5vw, 2.4rem); margin-bottom: 0.65rem; }
.page-hero .lead { color: var(--text-muted); max-width: 640px; }

/* ── Catalog ── */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-btn {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--cool-grey);
  background: var(--lab-white);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--research-violet);
  color: var(--lab-white);
  border-color: var(--research-violet);
}

.catalog-card {
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.catalog-card:hover { box-shadow: 0 6px 20px var(--shadow); }

.catalog-card img { width: 100%; height: 200px; object-fit: cover; }

.catalog-body { padding: 1.35rem; }

.catalog-ref {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--bio-teal);
  display: block;
  margin-bottom: 0.35rem;
}

.catalog-body h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }

.catalog-meta {
  list-style: none;
  font-size: 0.82rem;
  margin: 0.75rem 0 1rem;
}
.catalog-meta li { padding: 0.2rem 0; color: var(--text-muted); }
.catalog-meta b { color: var(--text); }

.catalog-price {
  font-family: var(--font-head);
  font-size: 1.25rem;
  color: var(--research-violet);
  margin-bottom: 1rem;
}
.catalog-price span { font-size: 0.72rem; color: var(--text-muted); font-family: var(--font-body); }

/* ── Services page ── */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--cool-grey);
}

.service-detail.reverse { direction: rtl; }
.service-detail.reverse > * { direction: ltr; }

.service-detail img {
  border-radius: 2px;
  border: 1px solid var(--cool-grey);
  box-shadow: 6px 6px 0 var(--cool-grey);
}

.service-detail h2 { font-size: 1.5rem; margin: 0.5rem 0 0.75rem; }
.service-detail p { color: var(--text-muted); margin-bottom: 0.75rem; font-size: 0.92rem; }

.service-features {
  list-style: none;
  margin: 1rem 0 1.25rem;
}
.service-features li {
  padding: 0.35rem 0 0.35rem 1.25rem;
  position: relative;
  font-size: 0.88rem;
}
.service-features li::before {
  content: '●';
  position: absolute;
  left: 0;
  color: var(--bio-teal);
  font-size: 0.6rem;
  top: 0.55rem;
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.about-grid img {
  border-radius: 2px;
  border: 1px solid var(--cool-grey);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.stat-box {
  text-align: center;
  padding: 1.25rem;
  background: var(--lab-white);
  border: 1px dashed var(--research-violet);
}

.stat-box strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.75rem;
  color: var(--research-violet);
}

.stat-box span { font-size: 0.82rem; color: var(--text-muted); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.value-card {
  padding: 1.25rem;
  border: 1px solid var(--cool-grey);
  border-top: 3px solid var(--bio-teal);
}

.value-card h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.value-card p { font-size:  0.85rem; color: var(--text-muted); }

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info h2 { font-size: 1.35rem; margin-bottom: 1rem; }

.contact-detail {
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
}
.contact-detail strong { display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 0.25rem; }

.form-card {
  background: var(--lab-white);
  border: 1px solid var(--cool-grey);
  border-left: 3px solid var(--margin-line);
  padding: 2rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.field input, .field select, .field textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--cool-grey);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  background: var(--lab-white);
  transition: border-color 0.2s;
}

.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--bio-teal);
}

.field textarea { min-height: 120px; resize: vertical; }

.field .err {
  display: none;
  font-size: 0.78rem;
  color: #DC2626;
  margin-top: 0.25rem;
}

.field.invalid input, .field.invalid select, .field.invalid textarea {
  border-color: #DC2626;
}

.field.invalid .err { display: block; }

.form-success {
  display: none;
  background: #F0FDFA;
  border: 1px solid var(--bio-teal);
  padding: 1rem;
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--teal-dark);
}

.form-success.show { display: block; }

/* ── Prose (legal) ── */
.prose { max-width: 780px; }
.prose h2 { font-size: 1.2rem; margin: 2rem 0 0.75rem; }
.prose p, .prose li { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0.75rem; }
.prose ul { padding-left: 1.25rem; margin-bottom: 1rem; }
.prose li { margin-bottom: 0.35rem; }
.prose strong { color: var(--text); }

/* ── Footer ── */
.lab-footer {
  background: var(--text);
  color: #D1D5DB;
  padding: 3rem 0 1.5rem;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand .logo-name { color: var(--lab-white); font-size: 1.15rem; }
.footer-brand p { font-size: 0.85rem; margin-top: 0.75rem; line-height: 1.6; }

.footer-grid h4 {
  color: var(--lab-white);
  font-family: var(--font-body);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.85rem;
}

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.4rem; }
.footer-links a { color: #9CA3AF; font-size: 0.85rem; }
.footer-links a:hover { color: var(--bio-teal); }

.footer-contact p { font-size: 0.85rem; margin-bottom: 0.35rem; }
.footer-contact b { color: var(--lab-white); }

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: #6B7280;
}

/* ── Cookie banner ── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--lab-white);
  border-top: 2px dashed var(--research-violet);
  padding: 1rem 1.5rem;
  z-index: 9999;
  box-shadow: 0 -4px 20px var(--shadow);
  transform: translateY(100%);
  transition: transform 0.35s ease;
}

.cookie-banner.show { transform: translateY(0); }

.cookie-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cookie-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--research-violet);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}

.cookie-text { font-size: 0.85rem; color: var(--text-muted); max-width: 680px; }
.cookie-text a { color: var(--research-violet); text-decoration: underline; }

.cookie-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

.btn-cookie {
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid var(--cool-grey);
  background: var(--lab-white);
  font-family: var(--font-body);
}

.btn-cookie.accept {
  background: var(--bio-teal);
  color: var(--lab-white);
  border-color: var(--bio-teal);
}

.btn-cookie.accept:hover {
  background: var(--research-violet);
  border-color: var(--research-violet);
}

.no-js .cookie-banner { display: none; }

/* ── Animations ── */
.slide-up, .fade-in {
  opacity: 1;
  transform: none;
  transition: opacity .4s ease, transform .4s ease;
}
html.js .slide-up, html.js .fade-in {
  opacity: 0;
  transform: translateY(28px);
}
html.js .slide-up.visible, html.js .fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .process-track { grid-template-columns: repeat(3, 1fr); }
  .process-step:nth-child(3)::after { display: none; }
  .req-list { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--lab-white);
    border-bottom: 1px solid var(--cool-grey);
    padding: 0.75rem 1.5rem 1rem;
    display: none;
    box-shadow: 0 8px 16px var(--shadow);
  }

  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .header-cta { display: none; }

  .hero-grid { grid-template-columns: 1fr; }
  .timeline-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: 1fr; }
  .process-step::after { display: none; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .req-list { grid-template-columns: 1fr; }
  .innovation-note .notebook-card { flex-direction: column; }
  .service-detail, .service-detail.reverse { grid-template-columns: 1fr; direction: ltr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}