/* DataVertex — datavertex.pro */
:root {
  --bg-dark: #101418;
  --text-on-dark: #F4F1EA;
  --bg-light: #F4F1EA;
  --text-on-light: #101418;
  --bg-accent: #F59E0B;
  --text-on-accent: #101418;
  --bg-extra: #1E3A5F;
  --text-on-extra: #F4F1EA;
  --radius: 12px;
  --pill: 999px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --font-head: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --max: 1140px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; overflow-x: clip; }
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-on-light);
  background: var(--bg-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.15; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
.container { width: min(var(--max), 92vw); margin: 0 auto; }
.surface-dark { background: var(--bg-dark); color: var(--text-on-dark); }
.surface-light { background: var(--bg-light); color: var(--text-on-light); }
.surface-accent { background: var(--bg-accent); color: var(--text-on-accent); }
.surface-steel { background: var(--bg-extra); color: var(--text-on-extra); }
.surface-dark *, .surface-light *, .surface-accent *, .surface-steel * { color: inherit; }
.surface-dark a, .surface-light a, .surface-accent a, .surface-steel a { color: currentColor; text-decoration: underline; }
.eyebrow {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--bg-accent); font-weight: 600; margin-bottom: 0.75rem;
}
.surface-dark .eyebrow, .surface-steel .eyebrow { color: #FCD34D; }
.pipeline-badge, .phase-badge, .node-badge {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; background: var(--bg-accent); color: var(--text-on-accent);
  padding: 4px 12px; border-radius: var(--pill); margin-bottom: 0.75rem;
}
.site-header {
  position: absolute; top: 0; left: 0; right: 0; z-index: 200;
  background: transparent; color: var(--text-on-dark); transition: background 0.3s ease;
}
.site-header.is-scrolled {
  position: fixed; background: var(--bg-dark); box-shadow: 0 2px 16px rgba(0,0,0,0.2);
}
.site-header--solid { position: sticky; background: var(--bg-dark); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; gap: 1rem; }
.logo {
  font-family: var(--font-head); font-weight: 700; font-size: 1.2rem;
  text-decoration: none !important; display: flex; align-items: center; gap: 0.6rem;
}
.logo-mark {
  background: var(--bg-accent); color: var(--text-on-accent); width: 36px; height: 36px;
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700;
}
.nav-desktop { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.nav-desktop a { text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav-toggle {
  display: none; background: transparent; border: 2px solid var(--text-on-dark);
  color: var(--text-on-dark); padding: 0.5rem 0.75rem; border-radius: var(--pill);
  cursor: pointer; font-family: inherit; min-height: 44px;
}
.mobile-nav {
  display: flex; flex-direction: column; position: fixed; top: 0; right: 0;
  width: min(300px, 88vw); height: 100dvh; padding: 5rem 1.75rem 2rem;
  background: var(--bg-dark); transform: translateX(100%); visibility: hidden;
  pointer-events: none; transition: transform 0.35s, visibility 0.35s; z-index: 300;
  box-shadow: -8px 0 32px rgba(0,0,0,0.35); border-left: 2px solid var(--bg-accent); overflow-y: auto;
}
.mobile-nav.is-open { transform: translateX(0); visibility: visible; pointer-events: auto; }
.mobile-nav a {
  display: block; padding: 0.85rem 0; text-decoration: none; font-family: var(--font-head);
  font-size: 1.05rem; font-weight: 500; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.nav-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65); z-index: 150;
  opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 0.35s, visibility 0.35s;
}
.nav-backdrop.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-body);
  font-weight: 600; text-decoration: none !important; cursor: pointer; border: none;
  min-height: 44px; line-height: 1.2; border-radius: var(--pill); transition: filter 0.2s, transform 0.2s;
}
.btn-primary { background: var(--bg-accent); color: var(--text-on-accent); padding: 14px 32px; }
a.btn.btn-primary,
button.btn.btn-primary {
  color: var(--text-on-accent);
  text-decoration: none;
}
.btn-outline {
  background: transparent; color: var(--text-on-dark); border: 1px solid currentColor; padding: 14px 32px;
}
.surface-light .btn-outline { color: var(--text-on-light); }
.btn-dark { background: var(--bg-dark); color: var(--text-on-dark); padding: 14px 32px; }
a.btn.btn-dark,
button.btn.btn-dark {
  color: var(--text-on-dark);
  text-decoration: none;
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.text-accent { color: var(--bg-accent); }
.hero-synaptic {
  position: relative; min-height: 92vh; display: grid;
  grid-template-columns: 1fr 1fr; align-items: center; overflow: hidden;
}
.hero-synaptic-inner { padding: 7rem 0 4rem; }
.hero-serial { font-size: 0.85rem; opacity: 0.8; margin-bottom: 0.5rem; }
.hero-sub { font-size: 1.1rem; max-width: 560px; margin: 1rem 0 1.5rem; opacity: 0.92; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-trust-strip {
  margin-top: 2rem; padding-top: 1rem; border-top: 1px solid rgba(245, 158, 11, 0.25);
  font-size: 0.9rem; opacity: 0.85;
}
.hero-synaptic-stack {
  display: flex; flex-direction: column; align-items: center; gap: 0; padding: 6rem 2rem 4rem;
}
.hero-synaptic-stack .frame {
  width: min(280px, 80%); border: 1px solid var(--bg-accent); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); position: relative;
}
.hero-synaptic-stack .frame img { width: 100%; height: 160px; object-fit: cover; }
.hero-synaptic-stack .connector {
  width: 1px; height: 24px; background: var(--bg-accent); opacity: 0.6;
}
.hero-data-console {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center;
  padding-left: max(4vw, 1.25rem);
  padding-right: max(4vw, 1.25rem);
}
.hero-data-console-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(16,20,24,0.92) 40%, rgba(16,20,24,0.4) 100%);
}
.hero-data-console > .container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
}
.hero-data-console-content {
  position: relative;
  z-index: 2;
  padding: 7rem 0 3rem;
  max-width: 40rem;
}
.hero-console-card {
  position: absolute; top: 6rem; right: 5%; z-index: 3;
  border: 1px solid var(--bg-accent); border-radius: var(--radius);
  padding: 1rem 1.25rem; background: rgba(16,20,24,0.85); font-size: 0.8rem;
  font-family: monospace; letter-spacing: 0.04em;
}
.hero-console-card .tick { display: block; padding: 0.2rem 0; border-bottom: 1px solid rgba(245, 158, 11, 0.25); }
section { padding: 88px 0; }
.stats-strip {
  display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; gap: 2rem; padding: 3rem 0;
}
.stat-num { font-family: var(--font-head); font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 700; line-height: 1; }
.stat-label { font-size: 14px; margin-top: 0.5rem; opacity: 0.9; }
.track-band { padding: 2.5rem 0; border-bottom: 1px solid rgba(245, 158, 11, 0.25); }
.track-band-inner { display: grid; grid-template-columns: auto 1fr auto; gap: 2rem; align-items: center; }
.track-band h3 { margin-bottom: 0.5rem; }
.track-link { font-weight: 600; text-decoration: none !important; white-space: nowrap; }
.method-panel { display: grid; grid-template-columns: 30% 1fr; gap: 3rem; align-items: start; }
.method-steps { margin-top: 1.5rem; padding-left: 1.5rem; list-style-position: outside; }
.method-steps li {
  padding: 0.75rem 0; border-bottom: 1px solid rgba(255,255,255,0.12); font-weight: 500;
}
.method-main img {
  border-radius: var(--radius); margin-top: 1.5rem; box-shadow: var(--shadow);
  width: 100%; max-width: 560px; max-height: 340px; object-fit: cover;
}
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card {
  position: relative; border-radius: var(--radius); padding: 28px; background: #fff;
  box-shadow: var(--shadow); transition: box-shadow 0.3s, transform 0.3s;
}
.surface-light .card { background: #fff; }
.card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.12); transform: translateY(-4px); }
.card-link { font-weight: 600; text-decoration: none !important; color: var(--bg-accent); }
.card-rail { border-left: 3px solid var(--bg-accent); padding-left: 1rem; }
.accordion { max-width: 800px; }
.accordion-item { border-bottom: 1px solid rgba(245, 158, 11, 0.25); }
.accordion-trigger {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.25rem 0; background: none; border: none; color: inherit; font-family: var(--font-head);
  font-size: 1.05rem; font-weight: 600; text-align: left; cursor: pointer; min-height: 44px;
}
.accordion-chevron { flex-shrink: 0; width: 24px; height: 24px; transition: transform 0.3s; color: var(--bg-accent); }
.accordion-item.is-open .accordion-chevron { transform: rotate(180deg); }
.accordion-panel { padding: 0 0 1.25rem; line-height: 1.7; }
.no-js .accordion-panel { display: block !important; }
.js .accordion-panel { display: none; }
.js .accordion-item.is-open .accordion-panel { display: block; }
.cta-band { text-align: center; padding: 88px 0; }
.cta-band p { max-width: 560px; margin: 1rem auto 0; }
.cta-band .btn { margin-top: 1.5rem; }
.site-footer { padding: 60px 0 40px; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; margin-bottom: 2rem; }
.footer-grid h4 { font-size: 1rem; margin-bottom: 1rem; color: #FCD34D; }
.footer-grid a { display: block; text-decoration: none; margin-bottom: 0.4rem; font-size: 0.95rem; }
.footer-disclaimer, .footer-hosting {
  font-size: 0.85rem; opacity: 0.9; margin-top: 1.5rem; line-height: 1.6;
  border-top: 1px solid rgba(245, 158, 11, 0.25); padding-top: 1.5rem;
}
.page-hero { padding: 90px 0 50px; }
.surface-light h2 { border-bottom: 1px solid rgba(245, 158, 11, 0.25); padding-bottom: 0.5rem; display: inline-block; }
.content-block { max-width: 800px; }
.about-layout { display: grid; grid-template-columns: 1fr 320px; gap: 3rem; align-items: start; }
.about-narrative section { padding: 3rem 0; }
.about-narrative section:first-child { padding-top: 0; }
.sidebar-card { position: sticky; top: 100px; border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.sidebar-card.surface-steel,
.sidebar-card.surface-steel p,
.sidebar-card.surface-steel span,
.sidebar-card.surface-steel div {
  color: var(--text-on-extra);
}
.sidebar-card.surface-steel .eyebrow { color: #FCD34D; }
.sidebar-stat { padding: 1rem 0; border-bottom: 1px solid rgba(245, 158, 11, 0.25); font-size: 0.95rem; line-height: 1.5; }
.sidebar-stat strong { display: block; font-family: var(--font-head); font-size: 1.75rem; color: var(--bg-accent); margin-bottom: 0.25rem; }
.sidebar-card.surface-steel .sidebar-stat strong { color: var(--bg-accent); }
.inline-photo { border-radius: var(--radius); margin: 2rem 0; box-shadow: var(--shadow); }
.program-list { display: flex; flex-direction: column; gap: 2rem; }
.program-item { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; padding: 2rem 0; border-bottom: 1px solid rgba(245, 158, 11, 0.25); align-items: start; }
.program-item:not(:has(img)) { grid-template-columns: 1fr; }
.program-item img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius); }
.program-item > div { min-width: 0; }
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.service-card { border-radius: var(--radius); padding: 28px; background: #fff; box-shadow: var(--shadow); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.4rem; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid rgba(0,0,0,0.2);
  border-radius: var(--radius); background: #fff; color: var(--text-on-light); font-family: inherit; font-size: 1rem;
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-check { display: grid; grid-template-columns: auto 1fr; gap: 0.75rem; align-items: start; }
.form-group.form-check label { display: block; margin-bottom: 0; font-weight: 400; line-height: 1.5; }
.form-check input { margin-top: 0.25em; min-width: 18px; min-height: 18px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.legal-content h2 { margin: 2rem 0 1rem; font-size: 1.5rem; }
.legal-content h3 { margin: 1.5rem 0 0.75rem; font-size: 1.2rem; }
.legal-content p, .legal-content li { margin-bottom: 1rem; }
.legal-content ul { list-style: disc; padding-left: 1.5rem; }
.legal-photo { border-radius: var(--radius); margin: 2rem 0; max-width: 600px; }
.disclaimer-box {
  padding: 1.5rem; margin: 2rem 0; border-left: 3px solid var(--bg-accent);
  background: rgba(245, 158, 11, 0.08); border-radius: 0 var(--radius) var(--radius) 0;
}
.error-page { min-height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 4rem 0; }
.faq-layout { display: grid; grid-template-columns: 1fr 360px; gap: 3rem; align-items: start; }
.alert-success { padding: 1rem 1.25rem; background: rgba(245, 158, 11, 0.08); border-radius: var(--radius); margin-bottom: 1.5rem; }
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000; padding: 1.25rem;
  background: var(--bg-dark); color: var(--text-on-dark); border-top: 2px solid var(--bg-accent);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.2);
}
.cookie-inner {
  width: min(var(--max), 92vw); margin: 0 auto; display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between; gap: 1rem;
}
.cookie-inner p { font-size: 0.9rem; max-width: 640px; }
.cookie-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.cookie-actions .btn { padding: 10px 20px; font-size: 0.9rem; }
.cookie-modal {
  display: none; position: fixed; inset: 0; z-index: 1001;
  background: rgba(0,0,0,0.7); align-items: center; justify-content: center; padding: 1rem;
}
.cookie-modal.is-open { display: flex; }
.cookie-modal-box {
  background: var(--bg-light); color: var(--text-on-light); border-radius: var(--radius);
  padding: 2rem; max-width: 480px; width: 100%;
}
.cookie-option { margin: 1rem 0; }
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s, transform 0.5s; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .method-panel, .about-layout, .faq-layout { grid-template-columns: 1fr; }
  .sidebar-card { position: static; }
  .track-band-inner { grid-template-columns: 1fr; gap: 1rem; }
  .hero-synaptic { grid-template-columns: 1fr; min-height: 78vh; }
  .hero-console-card { position: static; margin: 1rem 0; }
}
@media (max-width: 767px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: block; }
  section { padding: 48px 0; }
  .hero-data-console { min-height: 82vh; }
  .stats-strip { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .program-item, .contact-grid { grid-template-columns: 1fr; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}