/* ══════════════════════════════════════════════════════════
   RegNovaIQ — Design System
   Premium SaaS light theme with interactive elements
   ══════════════════════════════════════════════════════════ */

[data-theme="dark"] .nav {
  background: transparent;
}

[data-theme="dark"] .nav--scrolled {
  background: color-mix(in srgb, var(--surface-page) 88%, transparent);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .nav--open .nav__links,
[data-theme="dark"] .nav--open .nav__cta {
  background: var(--surface-card);
  border-color: var(--border-soft);
}

[data-theme="dark"] .hero__canvas-wrap {
  background: linear-gradient(
    160deg,
    color-mix(in srgb, var(--surface-card) 90%, transparent),
    color-mix(in srgb, var(--surface-page) 70%, transparent)
  );
}

[data-theme="dark"] .hero__badge {
  background: rgba(var(--accent-primary-rgb), 0.12);
  border-color: rgba(var(--accent-primary-rgb), 0.25);
}

[data-theme="dark"] .engine-card__front {
  background: var(--surface-card);
}

[data-theme="dark"] .engine-card__back {
  background: linear-gradient(160deg, rgba(var(--accent-primary-rgb), 0.14), rgba(var(--accent-secondary-rgb), 0.08));
  border-color: rgba(var(--accent-primary-rgb), 0.25);
}

[data-theme="dark"] .engine-card__icon {
  background: rgba(var(--accent-primary-rgb), 0.12);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
}

[data-theme="dark"] .capability-card {
  background: var(--surface-card);
}

[data-theme="dark"] .capability-card:hover {
  border-color: rgba(var(--accent-primary-rgb), 0.35);
}

[data-theme="dark"] .product-tabs__btn {
  background: var(--surface-card);
}

[data-theme="dark"] .product-tabs__visual {
  background: linear-gradient(160deg, rgba(var(--accent-primary-rgb), 0.08), rgba(var(--accent-secondary-rgb), 0.06));
}

[data-theme="dark"] .product-tabs__visual-icon {
  background: rgba(var(--accent-primary-rgb), 0.12);
  border-color: rgba(var(--accent-primary-rgb), 0.25);
}

[data-theme="dark"] .pill {
  background: rgba(var(--accent-primary-rgb), 0.1);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
}

[data-theme="dark"] .btn-secondary {
  background: var(--surface-card);
  border-color: var(--border-med);
  color: var(--ink-800);
}

[data-theme="dark"] .cta-final__form input[type="email"] {
  background: var(--surface-card);
  color: var(--ink-800);
  border-color: var(--border-med);
}

[data-theme="dark"] .cta-final__form input[type="email"]::placeholder {
  color: var(--ink-500);
}

[data-theme="dark"] .card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .timeline-item,
[data-theme="dark"] .highlight-panel,
[data-theme="dark"] .hero__panel {
  background: var(--surface-card);
}

[data-theme="dark"] .tabs {
  background: var(--surface-card);
}

[data-theme="dark"] .tab-button {
  background: var(--surface-alt);
}

[data-theme="dark"] .proof-card {
  background: var(--surface-alt);
}

[data-theme="dark"] .workflow-step {
  background: var(--surface-card);
}

[data-theme="dark"] .logo-strip {
  background: var(--surface-card);
  border-color: var(--border-med);
}

[data-theme="dark"] .arch-diagram {
  background: var(--surface-card);
}

[data-theme="dark"] .arch-diagram::after {
  background: radial-gradient(circle at 10% 20%, rgba(var(--accent-primary-rgb), 0.08), transparent 45%);
}

[data-theme="dark"] .cta {
  background: linear-gradient(135deg, rgba(var(--accent-primary-rgb), 0.08), rgba(var(--accent-secondary-rgb), 0.06));
  border-color: rgba(var(--accent-primary-rgb), 0.2);
}

[data-theme="dark"] .cta input,
[data-theme="dark"] .cta textarea,
[data-theme="dark"] .cta select {
  background: var(--surface-alt);
  color: var(--ink-800);
  border-color: var(--border-med);
}

[data-theme="dark"] .page::before {
  background: rgba(var(--accent-primary-rgb), 0.1);
}

[data-theme="dark"] .page::after {
  background: rgba(var(--accent-secondary-rgb), 0.08);
}

[data-theme="dark"] .nav__toggle {
  background: var(--surface-card);
  border-color: var(--border-med);
  color: var(--ink-700);
}

/* ══════════════════════════════════════════════════════════
   Theme Toggle Button
   ══════════════════════════════════════════════════════════ */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-med);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--brand-emerald);
  box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.12);
}

.theme-toggle svg {
  stroke: var(--ink-600);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle__moon {
  display: none;
}

[data-theme="dark"] .theme-toggle__sun {
  display: none;
}

[data-theme="dark"] .theme-toggle__moon {
  display: block;
}

[data-theme="dark"] .theme-toggle__moon path {
  fill: var(--ink-600);
  stroke: var(--ink-600);
}

/* ══════════════════════════════════════════════════════════
   Metallic Shimmer (hover-only)
   ══════════════════════════════════════════════════════════ */
.metallic-border {
  position: relative;
}

.metallic-border::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(
    110deg,
    transparent 20%,
    rgba(255, 255, 255, 0.35) 45%,
    rgba(255, 255, 255, 0.5) 50%,
    rgba(255, 255, 255, 0.35) 55%,
    transparent 80%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  background-size: 200% 100%;
  background-position: 100% 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.metallic-border:hover::before {
  opacity: 1;
  animation: shimmer-sweep 1.8s ease-in-out;
}

@keyframes shimmer-sweep {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

[data-theme="dark"] .metallic-border::before {
  background: linear-gradient(
    110deg,
    transparent 20%,
    rgba(255, 255, 255, 0.5) 45%,
    rgba(255, 255, 255, 0.7) 50%,
    rgba(255, 255, 255, 0.5) 55%,
    transparent 80%
  );
  background-size: 200% 100%;
  background-position: 100% 0;
}

/* ══════════════════════════════════════════════════════════
   Logo Sparkles
   ══════════════════════════════════════════════════════════ */
.logo--sparkle {
  position: relative;
}

.logo--sparkle::before,
.logo--sparkle::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 30% 30%,
    rgba(255, 255, 255, 0.95) 0 18%,
    rgba(var(--accent-secondary-rgb), 0.95) 40%,
    rgba(var(--accent-quaternary-rgb), 0.28) 72%,
    transparent 100%
  );
  box-shadow:
    0 0 10px rgba(var(--accent-secondary-rgb), 0.62),
    0 0 18px rgba(var(--accent-quaternary-rgb), 0.34);
  pointer-events: none;
  opacity: 0;
  z-index: 3;
  animation: sparkle-1 2.4s ease-in-out infinite;
}

.logo--sparkle::before {
  top: -6px;
  right: -10px;
}

.logo--sparkle::after {
  bottom: -4px;
  left: -8px;
  animation-name: sparkle-2;
  animation-delay: 1.2s;
  width: 8px;
  height: 8px;
}

[data-theme="dark"] .logo--sparkle::before,
[data-theme="dark"] .logo--sparkle::after {
  background: radial-gradient(
    circle at 30% 30%,
    rgba(255, 255, 255, 0.92) 0 18%,
    rgba(var(--accent-secondary-rgb), 0.95) 40%,
    rgba(var(--accent-quaternary-rgb), 0.3) 72%,
    transparent 100%
  );
  box-shadow:
    0 0 12px rgba(var(--accent-secondary-rgb), 0.84),
    0 0 22px rgba(var(--accent-quaternary-rgb), 0.36);
}

@keyframes sparkle-1 {
  0%, 100% { opacity: 0; transform: scale(0) rotate(0deg); }
  25% { opacity: 1; transform: scale(1.2) rotate(20deg); }
  50% { opacity: 0.8; transform: scale(1) rotate(-10deg); }
  75% { opacity: 0; transform: scale(0) rotate(0deg); }
}

@keyframes sparkle-2 {
  0%, 100% { opacity: 0; transform: scale(0) rotate(0deg); }
  15% { opacity: 0; transform: scale(0); }
  40% { opacity: 1; transform: scale(1.15) rotate(-15deg); }
  65% { opacity: 0.7; transform: scale(0.9) rotate(10deg); }
  85% { opacity: 0; transform: scale(0) rotate(0deg); }
}

.auth-logo-shell {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(8, 17, 34, 0.65), rgba(7, 20, 43, 0.45)),
    radial-gradient(circle at top right, rgba(var(--accent-secondary-rgb), 0.2), transparent 55%);
  border: 1px solid rgba(139, 184, 255, 0.26);
  box-shadow:
    0 14px 34px rgba(0, 0, 0, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.auth-logo-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    120deg,
    rgba(46, 149, 255, 0.68),
    rgba(56, 214, 255, 0.58),
    rgba(196, 73, 188, 0.66)
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.85;
}

.auth-logo-shell--prominent {
  padding: 18px 24px;
  border-color: rgba(120, 192, 255, 0.45);
  box-shadow:
    0 18px 42px rgba(0, 0, 0, 0.36),
    0 0 0 1px rgba(var(--accent-primary-rgb), 0.2),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.auth-logo-shell--seamless {
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.auth-logo-shell--seamless::after {
  display: none;
}

.auth-logo-shell--seamless img {
  filter:
    drop-shadow(0 2px 10px rgba(6, 22, 44, 0.55))
    drop-shadow(0 0 14px rgba(82, 168, 255, 0.32))
    brightness(1.14)
    contrast(1.08);
}

[data-theme="light"] .auth-logo-shell--seamless img,
.zenith-auth-page--light .auth-logo-shell--seamless img {
  filter:
    drop-shadow(0 2px 8px rgba(15, 23, 42, 0.24))
    drop-shadow(0 0 10px rgba(30, 111, 217, 0.18))
    brightness(1.02)
    contrast(1.02);
}

.auth-logo-focus {
  position: relative;
  isolation: isolate;
}

.auth-logo-focus::before {
  content: "";
  position: absolute;
  inset: -14px -20px;
  border-radius: 18px;
  z-index: -1;
  background:
    radial-gradient(circle at 50% 40%, rgba(var(--accent-primary-rgb), 0.3), transparent 68%),
    radial-gradient(circle at 66% 72%, rgba(var(--accent-secondary-rgb), 0.26), transparent 72%);
  filter: blur(8px);
  animation: auth-logo-pulse 3s ease-in-out infinite;
}

@keyframes auth-logo-pulse {
  0%, 100% {
    opacity: 0.46;
    transform: scale(0.98);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.03);
  }
}

/* ══════════════════════════════════════════════════════════
   Zenith Auth Surface (landing/admin/client shared)
   ══════════════════════════════════════════════════════════ */
.zenith-auth-page {
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 16px;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 16%, rgba(56, 145, 255, 0.26), transparent 42%),
    radial-gradient(circle at 80% 84%, rgba(240, 98, 146, 0.22), transparent 44%),
    linear-gradient(145deg, #020408 0%, #071327 42%, #081f42 100%);
}

[data-theme="light"] .zenith-auth-page,
.zenith-auth-page--light {
  background:
    radial-gradient(circle at 16% 14%, rgba(59, 130, 246, 0.16), transparent 40%),
    radial-gradient(circle at 78% 86%, rgba(124, 58, 237, 0.12), transparent 45%),
    linear-gradient(140deg, #f8fafc 0%, #e8eef7 100%);
}

[data-theme="dark"] .zenith-auth-page,
.zenith-auth-page--dark {
  background:
    radial-gradient(circle at 18% 16%, rgba(56, 145, 255, 0.26), transparent 42%),
    radial-gradient(circle at 80% 84%, rgba(240, 98, 146, 0.22), transparent 44%),
    linear-gradient(145deg, #020408 0%, #071327 42%, #081f42 100%);
}

.zenith-auth-page::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(91, 112, 146, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 112, 146, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 100%);
  pointer-events: none;
  opacity: 0.6;
}

.zenith-auth-card {
  position: relative;
  width: min(100%, 468px);
  border-radius: 18px;
  padding: 30px 28px;
  background: rgba(10, 22, 40, 0.74);
  border: 1px solid rgba(150, 184, 255, 0.32);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(14px);
  z-index: 1;
}

[data-theme="light"] .zenith-auth-card,
.zenith-auth-page--light .zenith-auth-card {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(15, 23, 42, 0.12);
  box-shadow: 0 22px 60px rgba(15, 23, 42, 0.14);
}

.zenith-auth-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    115deg,
    rgba(255, 255, 255, 0) 22%,
    rgba(242, 248, 255, 0.22) 38%,
    rgba(180, 206, 230, 0.42) 49%,
    rgba(255, 255, 255, 0) 64%
  );
  background-size: 240% 240%;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.86;
  animation: zenith-auth-metallic-sheen 4.2s linear infinite;
}

.zenith-auth-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    120deg,
    rgba(226, 236, 248, 0.92),
    rgba(131, 166, 203, 0.75),
    rgba(97, 212, 255, 0.88),
    rgba(181, 201, 224, 0.82),
    rgba(226, 236, 248, 0.92)
  );
  background-size: 240% 240%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.9;
  animation: zenith-auth-border-flow 7.5s linear infinite;
}

@keyframes zenith-auth-border-flow {
  0% { background-position: 0% 50%; opacity: 0.76; }
  50% { background-position: 100% 50%; opacity: 1; }
  100% { background-position: 0% 50%; opacity: 0.76; }
}

@keyframes zenith-auth-metallic-sheen {
  0% { background-position: 0% 50%; opacity: 0.46; }
  50% { background-position: 100% 50%; opacity: 0.92; }
  100% { background-position: 0% 50%; opacity: 0.46; }
}

.zenith-auth-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    120deg,
    rgba(93, 199, 255, 0.92),
    rgba(129, 236, 255, 0.72),
    rgba(201, 112, 229, 0.76),
    rgba(93, 199, 255, 0.92)
  );
  background-size: 220% 220%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  animation: zenith-auth-border-flow 6s linear infinite;
}

@keyframes zenith-auth-border-flow {
  0% { background-position: 0% 50%; opacity: 0.72; }
  50% { background-position: 100% 50%; opacity: 0.95; }
  100% { background-position: 0% 50%; opacity: 0.72; }
}

.zenith-auth-brand {
  margin-bottom: 24px;
  text-align: center;
}

.zenith-auth-kicker {
  margin-top: 16px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.67rem;
  font-weight: 600;
  color: rgba(141, 170, 217, 0.94);
}

[data-theme="light"] .zenith-auth-kicker,
.zenith-auth-page--light .zenith-auth-kicker {
  color: rgba(40, 78, 140, 0.76);
}

.zenith-auth-heading {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: #e9f2ff;
  text-shadow: 0 8px 20px rgba(5, 17, 41, 0.45);
}

[data-theme="light"] .zenith-auth-heading,
.zenith-auth-page--light .zenith-auth-heading {
  color: #111827;
}

.zenith-auth-subheading {
  margin-top: 10px;
  color: rgba(206, 223, 248, 0.84);
  font-size: 0.95rem;
}

[data-theme="light"] .zenith-auth-subheading,
.zenith-auth-page--light .zenith-auth-subheading {
  color: rgba(71, 85, 105, 0.96);
}

.zenith-auth-highlights {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(113, 152, 224, 0.24);
  background: rgba(5, 19, 39, 0.58);
  display: grid;
  gap: 8px;
}

[data-theme="light"] .zenith-auth-highlights,
.zenith-auth-page--light .zenith-auth-highlights {
  border-color: rgba(15, 23, 42, 0.1);
  background: rgba(255, 255, 255, 0.74);
}

.zenith-auth-highlights li {
  list-style: none;
  font-size: 0.84rem;
  color: rgba(206, 223, 248, 0.84);
}

[data-theme="light"] .zenith-auth-highlights li,
.zenith-auth-page--light .zenith-auth-highlights li {
  color: rgba(55, 65, 81, 0.9);
}

.zenith-auth-highlights li::before {
  content: "•";
  color: #06b6d4;
  margin-right: 8px;
}

.zenith-auth-signal-strip {
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.zenith-auth-signal {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  border: 1px solid rgba(111, 177, 255, 0.36);
  background: rgba(6, 34, 71, 0.56);
  color: rgba(222, 236, 255, 0.9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: zenith-auth-signal-pulse 3.8s ease-in-out infinite;
}

.zenith-auth-signal:nth-child(2) { animation-delay: 0.8s; }
.zenith-auth-signal:nth-child(3) { animation-delay: 1.6s; }

@keyframes zenith-auth-signal-pulse {
  0% { box-shadow: 0 0 0 0 rgba(77, 170, 255, 0.0); }
  50% { box-shadow: 0 0 0 8px rgba(77, 170, 255, 0.08); }
  100% { box-shadow: 0 0 0 0 rgba(77, 170, 255, 0.0); }
}

[data-theme="light"] .zenith-auth-signal,
.zenith-auth-page--light .zenith-auth-signal {
  border-color: rgba(58, 90, 146, 0.26);
  background: rgba(255, 255, 255, 0.82);
  color: rgba(30, 41, 59, 0.9);
}

.zenith-auth-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 1120px);
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  gap: 24px;
}

.zenith-auth-panel {
  border-radius: 18px;
  border: 1px solid rgba(150, 184, 255, 0.28);
  background: rgba(10, 22, 40, 0.74);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(14px);
}

[data-theme="light"] .zenith-auth-panel,
.zenith-auth-page--light .zenith-auth-panel {
  border-color: rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 22px 60px rgba(15, 23, 42, 0.14);
}

.zenith-auth-panel--narrow {
  width: min(100%, 560px);
}

.zenith-auth-cta {
  border: none;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 12px 28px rgba(var(--accent-primary-rgb), 0.28);
  transition: transform 0.18s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.zenith-auth-cta:hover {
  transform: translateY(-1px);
  filter: saturate(1.08);
  box-shadow: 0 14px 32px rgba(var(--accent-primary-rgb), 0.34);
}

.zenith-auth-cta:disabled {
  transform: none;
  filter: none;
  background: var(--ink-500);
  box-shadow: none;
}

.zenith-auth-cta--secondary {
  border-radius: 10px;
  border: 1px solid var(--border-med);
  background: var(--surface-card);
  color: var(--ink-700);
  font-weight: 600;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.zenith-auth-cta--secondary:hover {
  border-color: var(--accent-primary);
  color: var(--ink-900);
}

/* ── Reset ── */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--surface-page);
  color: var(--ink-800);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

/* ── Layout ── */
.page { position: relative; overflow-x: hidden; }

.page::before,
.page::after {
  content: "";
  position: absolute;
  width: 540px;
  height: 540px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
}

.page::before {
  top: -180px;
  left: -120px;
  background: rgba(var(--accent-primary-rgb), 0.06);
}

.page::after {
  top: 240px;
  right: -220px;
  background: rgba(var(--accent-secondary-rgb), 0.05);
}

.container {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ── Typography ── */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--brand-emerald);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 16px 0;
  color: var(--ink-900);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--ink-600);
  max-width: 680px;
}

.muted { color: var(--ink-500); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  font-weight: 700;
  box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 50px rgba(var(--accent-primary-rgb), 0.25);
}

.btn-secondary {
  background: var(--white);
  border: 1px solid var(--border-med);
  color: var(--ink-800);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--brand-emerald);
  box-shadow: var(--shadow-md);
}

.regnovaiq-gradient {
  background: var(--gradient-brand);
}

/* ══════════════════════════════════════════════════════════
   Navigation
   ══════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: 70px;
  background: transparent;
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(0);
  transition: background var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med), backdrop-filter var(--transition-med);
}

.nav--scrolled {
  background: color-mix(in srgb, var(--surface-page) 88%, transparent);
  border-bottom-color: var(--border-soft);
  box-shadow: 0 1px 12px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(18px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  padding: 0;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav__logo span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav__links a {
  font-size: 0.86rem;
  color: var(--ink-500);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav__links a:hover,
.nav__links a.nav__link--active {
  color: var(--ink-900);
}

.nav__links a.nav__link--active {
  position: relative;
}

.nav__links a.nav__link--active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
}

.nav__cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__cta .btn {
  padding: 8px 18px;
  font-size: 0.82rem;
  border-radius: 999px;
}

.nav__toggle {
  display: none;
  border: 1px solid var(--border-med);
  background: var(--white);
  color: var(--ink-700);
  padding: 10px 12px;
  border-radius: 10px;
}

/* ══════════════════════════════════════════════════════════
   Marquee
   ══════════════════════════════════════════════════════════ */
.mq {
  margin-top: 70px;
  background: var(--gradient-brand);
  color: #ffffff;
  padding: 10px 0;
  overflow: hidden;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mq-track {
  display: inline-flex;
  gap: 60px;
  animation: mqs 30s linear infinite;
}

.mq-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.mq-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.45;
}

@keyframes mqs {
  to {
    transform: translateX(-50%);
  }
}

/* ══════════════════════════════════════════════════════════
   Hero
   ══════════════════════════════════════════════════════════ */
.hero {
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: flex-end;
  padding: 0 0 80px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 45% at 20% 70%, rgba(var(--accent-primary-rgb), 0.09), transparent 55%),
    radial-gradient(ellipse 50% 40% at 80% 30%, rgba(var(--accent-secondary-rgb), 0.06), transparent 55%),
    radial-gradient(ellipse 40% 35% at 60% 80%, rgba(var(--accent-tertiary-rgb), 0.06), transparent 50%),
    radial-gradient(ellipse 35% 30% at 40% 20%, rgba(var(--accent-quaternary-rgb), 0.04), transparent 50%),
    var(--surface-page);
}

.hero-lines {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  opacity: 0.14;
  pointer-events: none;
}

.hero-line {
  position: absolute;
  top: 0;
  height: 100%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--accent-primary) 30%, var(--accent-secondary) 70%, transparent);
}

.hero-line:nth-child(1) { right: 20%; }
.hero-line:nth-child(2) { right: 40%; opacity: 0.6; }
.hero-line:nth-child(3) { right: 60%; opacity: 0.3; }

.hero__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 80px;
  align-items: end;
  padding-top: 100px;
}

.hero-left {
  position: relative;
  z-index: 2;
}

.hero-right {
  position: relative;
  z-index: 2;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--accent-primary);
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.hero__eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: currentColor;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.4rem);
  line-height: 1.02;
  margin: 0 0 26px;
  letter-spacing: -0.04em;
  color: var(--ink-900);
  font-weight: 800;
}

.hero__accent {
  font-style: italic;
  font-weight: 400;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  color: var(--ink-600);
  font-size: 1.06rem;
  line-height: 1.75;
  max-width: 480px;
  margin-bottom: 34px;
}

.hero__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-ha,
.btn-hb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 10px;
  font-size: 0.94rem;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease, border-color 0.2s ease;
}

.btn-ha {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: var(--shadow-brand);
}

.btn-ha:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
}

.btn-hb {
  border: 1px solid var(--border-med);
  color: var(--ink-900);
  background: color-mix(in srgb, var(--surface-card) 92%, transparent);
}

.btn-hb:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

/* Hero card */
.dc {
  background: color-mix(in srgb, var(--surface-card) 92%, transparent);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.dc::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}

.dc-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.dc-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-500);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.dc-live {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dc-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.dc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.dc-m {
  padding: 18px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface-alt) 80%, transparent);
  border: 1px solid var(--border-soft);
}

.dc-mv {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 2px;
}

.dc-ml {
  font-size: 11px;
  color: var(--ink-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.dc-foot {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.dc-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  color: var(--accent-primary);
  background: rgba(var(--accent-primary-rgb), 0.08);
}

.dc-tag:nth-child(even) {
  color: var(--accent-secondary);
  background: rgba(var(--accent-secondary-rgb), 0.08);
}

.dc-tag:nth-child(3) {
  color: var(--accent-tertiary);
  background: rgba(var(--accent-tertiary-rgb), 0.08);
}

.dc-tag:nth-child(4) {
  color: var(--accent-quaternary);
  background: rgba(var(--accent-quaternary-rgb), 0.08);
}

.dc-matrix {
  margin-top: 18px;
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface-alt) 78%, transparent);
  overflow: hidden;
}

.dc-matrix__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
}

.dc-matrix__title {
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  font-weight: 700;
}

.dc-matrix__legend {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--ink-500);
}

.dc-matrix__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(var(--accent-secondary-rgb), 0.88);
  box-shadow: 0 0 0 4px rgba(var(--accent-secondary-rgb), 0.16);
}

.dc-matrix .hero__canvas-wrap {
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background:
    radial-gradient(circle at 15% 10%, rgba(var(--accent-secondary-rgb), 0.12), transparent 45%),
    linear-gradient(165deg, rgba(4, 18, 35, 0.88), rgba(8, 24, 46, 0.82));
}

.dc-matrix .hero__canvas-wrap canvas {
  opacity: 0.96;
}

.dc-matrix__footer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 10px 12px 12px;
}

.dc-matrix__signal {
  border-radius: 8px;
  border: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface-page) 70%, transparent);
  padding: 6px 8px;
}

.dc-matrix__signal-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.dc-matrix__signal-value {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-900);
}

.dc-threat {
  border-top: 1px solid var(--border-soft);
  padding: 10px 12px 12px;
  background: color-mix(in srgb, var(--surface-page) 68%, transparent);
}

.dc-threat__head {
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 8px;
}

.dc-threat__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 0;
}

.dc-threat__label {
  font-size: 0.74rem;
  color: var(--ink-600);
  line-height: 1.25;
}

.dc-threat__value {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-900);
}

.dc-threat__value--ok {
  color: var(--brand-emerald);
}

.dc-threat__value--warn {
  color: var(--brand-amber);
}

.dc-threat__value--err {
  color: var(--accent-primary);
}

/* Hero panel (used on sub-pages) */
.hero__panel {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 28px;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-lg);
}

.hero__panel h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--ink-900);
}

.hero__panel ul {
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--ink-600);
}

.hero__panel li::before {
  content: "\25CF";
  color: var(--brand-emerald);
  margin-right: 10px;
}

/* Hero canvas (legacy support) */
.hero__canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(241, 245, 249, 0.9), rgba(255, 255, 255, 0.7));
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
}

.hero__canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Floating orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

.orb--violet {
  width: 400px;
  height: 400px;
  background: rgba(var(--accent-primary-rgb), 0.06);
  top: -100px;
  left: -50px;
}

.orb--cyan {
  width: 350px;
  height: 350px;
  background: rgba(var(--accent-secondary-rgb), 0.05);
  bottom: -80px;
  right: -60px;
}

.orb--indigo {
  width: 300px;
  height: 300px;
  background: rgba(var(--accent-tertiary-rgb), 0.05);
  top: 40%;
  left: 50%;
}

@keyframes float-orb {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(-10px) translateX(-15px); }
  75% { transform: translateY(-25px) translateX(5px); }
}

.orb { animation: float-orb 8s ease-in-out infinite; }
.orb--cyan { animation-delay: -2s; animation-duration: 10s; }
.orb--indigo { animation-delay: -4s; animation-duration: 12s; }
/* ══════════════════════════════════════════════════════════
   Sections
   ══════════════════════════════════════════════════════════ */
.section { padding: 90px 0; }

.section--alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

/* ══════════════════════════════════════════════════════════
   Stats Bar (homepage)
   ══════════════════════════════════════════════════════════ */
.stats-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  padding: 32px 0;
  flex-wrap: wrap;
}

.stats-bar__item {
  text-align: center;
  padding: 0 32px;
  border-right: 1px solid var(--border-soft);
}

.stats-bar__item:last-child {
  border-right: none;
}

.stats-bar__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats-bar__label {
  display: block;
  font-size: 0.82rem;
  color: var(--ink-500);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 4px;
}

/* ══════════════════════════════════════════════════════════
   Product Tabs (homepage)
   ══════════════════════════════════════════════════════════ */
.product-tabs {
  margin-top: 32px;
}

.product-tabs__nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  justify-content: center;
}

.product-tabs__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--border-med);
  background: var(--white);
  color: var(--ink-600);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.product-tabs__btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.product-tabs__btn[aria-selected="true"] {
  background: var(--gradient-brand);
  color: #ffffff;
  font-weight: 700;
  border-color: transparent;
  box-shadow: var(--shadow-brand);
}

.product-tabs__panel {
  opacity: 0;
  transform: translateY(8px);
  position: absolute;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.product-tabs__panel.is-active {
  opacity: 1;
  transform: translateY(0);
  position: relative;
  pointer-events: auto;
}

.product-tabs__content {
  position: relative;
  min-height: 200px;
}

.product-tabs__detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.product-tabs__detail h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--ink-900);
}

.product-tabs__detail ul {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 20px 0;
  color: var(--ink-600);
  font-size: 0.95rem;
}

.product-tabs__detail li::before {
  content: "\2713";
  color: var(--brand-emerald);
  margin-right: 10px;
  font-weight: 700;
}

.product-tabs__visual {
  padding: 32px;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, rgba(var(--accent-primary-rgb), 0.04), rgba(var(--accent-secondary-rgb), 0.03));
  border: 1px solid var(--border-soft);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-tabs__visual-icon {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(var(--accent-primary-rgb), 0.06);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-tabs__visual-icon svg {
  width: 48px;
  height: 48px;
  stroke: var(--brand-emerald);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ══════════════════════════════════════════════════════════
   Engine Cards (homepage — Intelligence Engines)
   ══════════════════════════════════════════════════════════ */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.engine-card {
  position: relative;
  min-height: 260px;
  cursor: pointer;
}

.engine-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 260px;
  isolation: isolate;
}

.engine-card__front,
.engine-card__back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.engine-card__front {
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  align-items: center;
  text-align: center;
  gap: 12px;
  z-index: 1;
  opacity: 1;
  pointer-events: auto;
}

.engine-card__front::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: conic-gradient(
    from var(--gradient-angle, 0deg),
    transparent 0%,
    var(--accent-primary) 25%,
    var(--accent-secondary) 50%,
    var(--accent-tertiary) 75%,
    transparent 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-med);
}

.engine-card:hover .engine-card__front::before {
  opacity: 1;
}

.engine-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(var(--accent-primary-rgb), 0.06);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.engine-card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--brand-emerald);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.engine-card__front h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink-900);
}

.engine-card__front p {
  color: var(--ink-500);
  font-size: 0.85rem;
  line-height: 1.45;
}

.engine-card__back {
  background: linear-gradient(160deg, rgba(var(--accent-primary-rgb), 0.08), rgba(var(--accent-secondary-rgb), 0.04));
  border: 1px solid rgba(var(--accent-primary-rgb), 0.18);
  gap: 10px;
  align-items: flex-start;
  text-align: left;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
}

.engine-card__back h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--brand-emerald);
  margin-bottom: 8px;
}

.engine-card__back ul {
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--ink-700);
}

.engine-card__back li::before {
  content: "\25B8";
  color: var(--brand-emerald);
  margin-right: 8px;
}

.engine-card:hover .engine-card__front {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-5px);
}

.engine-card:hover .engine-card__back {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ══════════════════════════════════════════════════════════
   Hero Badge (shipping announcement)
   ══════════════════════════════════════════════════════════ */
.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-emerald-light);
  flex-shrink: 0;
  position: relative;
}

.hero__badge-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--brand-emerald-light);
  opacity: 0.4;
  animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.8); opacity: 0; }
}

/* ══════════════════════════════════════════════════════════
   Capability Grid (What's Shipping section)
   ══════════════════════════════════════════════════════════ */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.capability-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.capability-card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--accent-primary-rgb), 0.25);
  box-shadow: var(--shadow-lg);
}

.capability-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.capability-card__icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.capability-card__icon--amber {
  background: rgba(217, 119, 6, 0.08);
  border: 1px solid rgba(217, 119, 6, 0.18);
  color: var(--brand-amber-mid);
}

.capability-card__icon--emerald {
  background: rgba(var(--accent-primary-rgb), 0.08);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.18);
  color: var(--brand-emerald);
}

.capability-card__icon--cyan {
  background: rgba(var(--accent-secondary-rgb), 0.08);
  border: 1px solid rgba(var(--accent-secondary-rgb), 0.18);
  color: var(--brand-cyan);
}

.capability-card h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink-900);
}

.capability-card p {
  color: var(--ink-600);
  font-size: 0.9rem;
  line-height: 1.55;
  flex: 1;
}

.capability-card__tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.06);
  border: 1px solid rgba(217, 119, 6, 0.18);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand-amber);
  align-self: flex-start;
}

/* ══════════════════════════════════════════════════════════
   Trust & Security (homepage — Shield)
   ══════════════════════════════════════════════════════════ */
.trust {
  text-align: center;
}

.trust__shield {
  display: flex;
  justify-content: center;
  margin: 40px 0 32px;
}

.trust__shield svg {
  width: 120px;
  height: 140px;
}

.trust__shield .shield-body {
  fill: none;
  stroke: var(--brand-emerald);
  stroke-width: 2;
  opacity: 0.35;
}

.trust__shield .shield-check {
  fill: none;
  stroke: var(--brand-emerald);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
  transition: stroke-dashoffset 1.2s ease;
}

.trust__shield.is-visible .shield-check {
  stroke-dashoffset: 0;
}

.trust__shield .shield-ring {
  fill: none;
  stroke: var(--brand-emerald);
  stroke-width: 1;
  opacity: 0;
  transform-origin: center;
}

.trust__shield.is-visible .shield-ring {
  animation: pulse-ring 2s ease-out 0.8s forwards;
}

@keyframes pulse-ring {
  0% { opacity: 0.5; transform: scale(0.9); }
  100% { opacity: 0; transform: scale(1.5); }
}

.trust__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

/* ══════════════════════════════════════════════════════════
   CTA Section (homepage)
   ══════════════════════════════════════════════════════════ */
.cta-final {
  text-align: center;
  max-width: 580px;
  margin: 0 auto;
}

.cta-final__form {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  justify-content: center;
}

.cta-final__form input[type="email"] {
  flex: 1;
  max-width: 340px;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-med);
  background: var(--white);
  color: var(--ink-800);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.cta-final__form input[type="email"]::placeholder {
  color: var(--ink-400);
}

.cta-final__form input[type="email"]:focus {
  outline: none;
  border-color: var(--brand-emerald);
  box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.12);
}

.cta-final__alt {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--ink-500);
}

.cta-final__alt a {
  color: var(--brand-emerald);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ══════════════════════════════════════════════════════════
   Legacy components (used by sub-pages)
   ══════════════════════════════════════════════════════════ */

/* Stats grid (company page) */
.stats-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 42px;
}

.stat-card {
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
  box-shadow: var(--shadow-md);
}

.stat-card h4 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  margin-bottom: 8px;
  color: var(--brand-emerald);
}

.stat-card p {
  color: var(--ink-600);
  font-size: 0.9rem;
}

/* Grid-3 */
.grid-3 {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Card */
.card {
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
}

.card h3 {
  font-family: var(--font-display);
  margin-bottom: 10px;
  font-size: 1.15rem;
  color: var(--ink-900);
}

.card p {
  color: var(--ink-600);
  font-size: 0.95rem;
}

.card ul {
  list-style: none;
  margin-top: 14px;
  display: grid;
  gap: 8px;
  color: var(--ink-700);
  font-size: 0.9rem;
}

.card ul li::before {
  content: "\2713";
  color: var(--brand-emerald);
  margin-right: 8px;
}

/* Pill grid & pills */
.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.pill {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(var(--accent-primary-rgb), 0.05);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.15);
  font-size: 0.85rem;
  color: var(--ink-700);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.pill:hover {
  background: rgba(var(--accent-primary-rgb), 0.1);
  border-color: rgba(var(--accent-primary-rgb), 0.3);
}

/* Split layout */
.split {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

/* Highlight panel */
.highlight-panel {
  padding: 30px;
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
}

.highlight-panel h4 {
  font-family: var(--font-display);
  margin-bottom: 10px;
  color: var(--ink-900);
}

.highlight-panel p {
  color: var(--ink-600);
  font-size: 0.95rem;
}

/* Timeline */
.timeline {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.timeline-item {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--border-soft);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.timeline-item:hover {
  border-color: rgba(var(--accent-primary-rgb), 0.2);
  box-shadow: var(--shadow-sm);
}

.timeline-item h5 {
  font-family: var(--font-display);
  margin-bottom: 6px;
  color: var(--ink-900);
}

/* CTA block (sub-pages) */
.cta {
  background: linear-gradient(135deg, rgba(var(--accent-primary-rgb), 0.04), rgba(var(--accent-secondary-rgb), 0.03));
  border-radius: var(--radius-xl);
  padding: 40px;
  border: 1px solid rgba(var(--accent-primary-rgb), 0.15);
  display: grid;
  gap: 20px;
  align-items: center;
}

.cta form {
  display: grid;
  gap: 12px;
}

.cta input,
.cta textarea,
.cta select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border-med);
  background: var(--white);
  color: var(--ink-800);
  font-family: var(--font-body);
}

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

.cta small {
  color: var(--ink-500);
}

/* Logo strip */
.logo-strip {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin-top: 30px;
  color: var(--ink-500);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 18px 10px;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-med);
  background: var(--white);
}

/* Tabs (legacy sub-page tabs) */
.tabs {
  margin-top: 36px;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.tab-button {
  border: 1px solid var(--border-med);
  background: var(--surface-page);
  color: var(--ink-600);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-button[aria-selected="true"] {
  background: var(--gradient-brand);
  color: #ffffff;
  font-weight: 700;
  border-color: transparent;
  box-shadow: var(--shadow-brand);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.tab-panel .card {
  height: 100%;
}

/* Architecture diagram */
.arch-diagram {
  margin-top: 32px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.arch-diagram::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 10% 20%, rgba(var(--accent-primary-rgb), 0.04), transparent 45%);
  opacity: 0.6;
  pointer-events: none;
}

.arch-diagram svg {
  width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
}

.arch-diagram .legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 20px;
  position: relative;
  z-index: 1;
  font-size: 0.86rem;
  color: var(--ink-600);
}

.arch-diagram .legend span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.arch-diagram .legend i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  display: inline-block;
  background: var(--brand-emerald);
}

/* Proof grid */
.proof {
  margin-top: 36px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
}

.proof-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-top: 18px;
}

.proof-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--surface-page);
  border: 1px solid var(--border-soft);
}

.proof-card span {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--brand-emerald);
  margin-bottom: 6px;
}

.proof-card p {
  color: var(--ink-600);
  font-size: 0.9rem;
}

/* Workflow */
.workflow {
  margin-top: 36px;
  display: grid;
  gap: 20px;
}

.workflow-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.workflow-step:hover {
  transform: translateY(-3px);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
  box-shadow: var(--shadow-md);
}

.workflow-step .icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ffffff;
  background: var(--gradient-brand);
  box-shadow: var(--shadow-brand);
}

.workflow-step .icon-badge svg {
  width: 30px;
  height: 30px;
  stroke: currentColor;
}

.workflow-step span {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--brand-emerald);
}

.workflow-step h4 {
  margin-bottom: 6px;
  color: var(--ink-900);
}

.workflow-step p {
  color: var(--ink-600);
  font-size: 0.92rem;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
}

.logo img { height: 44px; }
.logo--tagline img { height: 70px; }
.logo--icon img { height: 40px; }

/* Surface light (if any sub-page uses it) */
.surface-light {
  background: var(--ink-50);
  color: var(--ink-900);
}

.surface-light .section-title,
.surface-light h3,
.surface-light h4,
.surface-light h5 {
  color: var(--ink-900);
}

.surface-light .section-subtitle,
.surface-light p,
.surface-light li,
.surface-light small {
  color: var(--ink-700);
}

.surface-light .card,
.surface-light .stat-card,
.surface-light .timeline-item,
.surface-light .highlight-panel {
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

.surface-light .pill {
  background: rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(15, 23, 42, 0.16);
  color: var(--ink-800);
}

/* ══════════════════════════════════════════════════════════
   Whitepaper
   ══════════════════════════════════════════════════════════ */
.whitepaper-hero .hero__title {
  max-width: 16ch;
}

.whitepaper-toc {
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: var(--surface-card);
  padding: 28px;
  display: grid;
  gap: 10px;
}

.whitepaper-toc h3 {
  font-family: var(--font-display);
  color: var(--ink-900);
  margin-bottom: 2px;
}

.whitepaper-toc a {
  color: var(--ink-600);
  font-size: 0.95rem;
}

.whitepaper-toc a:hover {
  color: var(--brand-emerald);
}

.whitepaper-method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.whitepaper-method-card {
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: var(--surface-card);
  padding: 22px;
}

.whitepaper-method-card h3 {
  margin-bottom: 8px;
  color: var(--ink-900);
}

.whitepaper-method-card p {
  color: var(--ink-600);
  font-size: 0.95rem;
}

.whitepaper-table-wrap {
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  overflow: auto;
  margin-top: 28px;
  background: var(--surface-card);
}

.whitepaper-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

.whitepaper-table th,
.whitepaper-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  vertical-align: top;
}

.whitepaper-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-700);
  background: var(--surface-alt);
}

.whitepaper-table td {
  color: var(--ink-600);
  font-size: 0.92rem;
}

.whitepaper-table tr:last-child td {
  border-bottom: none;
}

.whitepaper-note {
  margin-top: 14px;
  color: var(--ink-500);
  font-size: 0.88rem;
}

.whitepaper-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.whitepaper-list li {
  color: var(--ink-600);
  font-size: 0.95rem;
}

/* ══════════════════════════════════════════════════════════
   Footer
   ══════════════════════════════════════════════════════════ */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--border-soft);
  background: var(--surface-alt);
}

.footer-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.footer h5 {
  font-family: var(--font-display);
  margin-bottom: 12px;
  color: var(--ink-900);
}

.footer a {
  color: var(--ink-600);
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.footer a:hover { color: var(--ink-900); }

.footer-bottom {
  margin-top: 30px;
  color: var(--ink-500);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ══════════════════════════════════════════════════════════
   Scroll-reveal animations
   ══════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.grid-3 .reveal:nth-child(2),
.stats-grid .reveal:nth-child(2) {
  transition-delay: 0.1s;
}

.grid-3 .reveal:nth-child(3),
.stats-grid .reveal:nth-child(3) {
  transition-delay: 0.2s;
}

.stats-grid .reveal:nth-child(4) {
  transition-delay: 0.3s;
}

.capability-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.capability-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.capability-grid .reveal:nth-child(4) { transition-delay: 0.08s; }
.capability-grid .reveal:nth-child(5) { transition-delay: 0.16s; }
.capability-grid .reveal:nth-child(6) { transition-delay: 0.24s; }
.capability-grid .reveal:nth-child(7) { transition-delay: 0.08s; }
.capability-grid .reveal:nth-child(8) { transition-delay: 0.16s; }
.capability-grid .reveal:nth-child(9) { transition-delay: 0.24s; }

.timeline .reveal:nth-child(2) { transition-delay: 0.12s; }
.timeline .reveal:nth-child(3) { transition-delay: 0.24s; }

/* ══════════════════════════════════════════════════════════
   Whitepaper page
   ══════════════════════════════════════════════════════════ */
.whitepaper-hero .hero__title {
  max-width: 22ch;
}

.whitepaper-toc {
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: 10px;
}

.whitepaper-toc h3 {
  margin-bottom: 4px;
}

.whitepaper-toc a {
  color: var(--brand-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.whitepaper-toc a:hover {
  color: var(--brand-emerald);
  border-bottom-color: rgba(4, 120, 87, 0.35);
}

.whitepaper-method-grid {
  margin-top: 28px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.whitepaper-method-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.whitepaper-method-card h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.whitepaper-method-card p {
  color: var(--ink-600);
  font-size: 0.95rem;
}

.whitepaper-table-wrap {
  margin-top: 26px;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  background: var(--white);
}

.whitepaper-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.whitepaper-table th,
.whitepaper-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
  text-align: left;
}

.whitepaper-table thead th {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--ink-900);
  background: rgba(4, 120, 87, 0.05);
}

.whitepaper-table tbody tr:last-child td {
  border-bottom: none;
}

.whitepaper-note {
  margin-top: 14px;
  font-size: 0.92rem;
  color: var(--ink-600);
}

.whitepaper-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
  list-style: none;
}

.whitepaper-list li {
  color: var(--ink-700);
}

.whitepaper-list li::before {
  content: "\2713";
  color: var(--brand-emerald);
  margin-right: 8px;
}

[data-theme="dark"] .whitepaper-toc,
[data-theme="dark"] .whitepaper-method-card,
[data-theme="dark"] .whitepaper-table-wrap {
  background: var(--surface-card);
}

/* ══════════════════════════════════════════════════════════
   Responsive
   ══════════════════════════════════════════════════════════ */
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-right { max-width: 520px; }
  .hero-lines { display: none; }
  .mq { font-size: 10px; }

  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__toggle { display: inline-flex; }

  .nav--open .nav__links,
  .nav--open .nav__cta {
    display: grid;
    gap: 12px;
    padding: 18px;
    width: 100%;
    background: var(--white);
    border-radius: 16px;
    margin-top: 12px;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-md);
  }

  .nav--open .nav__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .engine-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .whitepaper-method-grid { grid-template-columns: 1fr; }
  .zenith-auth-shell { grid-template-columns: 1fr; }

  .product-tabs__detail { grid-template-columns: 1fr; }

  .workflow-step { grid-template-columns: 1fr; }
  .workflow-step .icon-badge { width: 56px; height: 56px; }

  .stats-bar { gap: 8px; }
  .stats-bar__item { padding: 0 16px; }
}

@media (max-width: 640px) {
  .mq { display: none; }
  .hero { padding: 0 0 56px; }
  .hero__title { font-size: 2.4rem; }
  .dc-grid { grid-template-columns: 1fr; }
  .dc-matrix__footer { grid-template-columns: 1fr; }
  .cta { padding: 28px; }
  .engine-grid { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: 1fr; }
  .whitepaper-table { min-width: 560px; }
  .zenith-auth-card { padding: 24px 20px; }

  .stats-bar { flex-direction: column; gap: 16px; }
  .stats-bar__item { border-right: none; border-bottom: 1px solid var(--border-soft); padding: 12px 0; }
  .stats-bar__item:last-child { border-bottom: none; }

  .cta-final__form { flex-direction: column; }
  .cta-final__form input[type="email"] { max-width: 100%; }
}

/* ══════════════════════════════════════════════════════════
   Reduced motion
   ══════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
    animation: none !important;
  }

  .engine-card__front {
    position: relative;
    inset: auto;
    opacity: 1;
    transform: none;
  }
  .engine-card__back {
    position: relative;
    inset: auto;
    display: none;
    opacity: 0;
    transform: none;
  }

  .logo--sparkle::before,
  .logo--sparkle::after { display: none; }

  .metallic-border::before { display: none; }
  .auth-logo-focus::before { display: none; }
  .zenith-auth-card::after { animation: none; opacity: 0.75; }
}