/* ============================================================
   Stratum Data — Design System
   Palette: void navy / electric cyan / structural violet
   Type: Space Grotesk (display) · Inter (body) · IBM Plex Mono (data)
   ============================================================ */

:root {
  --bg-void:      #05070C;
  --bg-primary:   #0A0E1A;
  --bg-elevated:  #10162A;
  --bg-elevated-2:#151D36;
  --line:         rgba(237, 241, 250, 0.09);
  --line-strong:  rgba(237, 241, 250, 0.16);

  --cyan:         #34D8E8;
  --cyan-dim:     rgba(52, 216, 232, 0.14);
  --violet:       #8B7FFF;
  --violet-dim:   rgba(139, 127, 255, 0.14);

  --text-primary: #EDF1FA;
  --text-muted:   #8891A8;
  --text-faint:   #545E78;

  --grad-strata: linear-gradient(90deg, #34D8E8 0%, #8B7FFF 100%);

  --font-display: 'Space Grotesk', 'Arial', sans-serif;
  --font-body:    'Inter', 'Helvetica Neue', sans-serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  --container: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

::selection { background: var(--cyan-dim); color: var(--cyan); }

a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--cyan);
  color: var(--bg-void);
  padding: 10px 18px;
  z-index: 999;
  font-family: var(--font-mono);
  font-size: 13px;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Eyebrow / labels ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-strata);
  color: #05070C;
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); box-shadow: 0 8px 30px rgba(52,216,232,0.25); }
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--text-primary);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-sm { padding: 10px 18px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Navigation ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 20px 0;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), padding 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(5, 7, 12, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  padding: 14px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-logo img { height: 44px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links > li { position: relative; }
.nav-links > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav-links > li > a:hover, .nav-links > li > a.active { color: var(--text-primary); background: rgba(255,255,255,0.04); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-caret { width: 9px; height: 9px; opacity: 0.6; transition: transform 0.2s; }
.has-dropdown:hover .nav-caret { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 280px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all 0.2s var(--ease);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown li a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
}
.dropdown li a:hover { background: rgba(255,255,255,0.05); }
.dropdown li a span { font-size: 12px; font-weight: 400; color: var(--text-muted); font-family: var(--font-body); }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.mobile-toggle span { width: 22px; height: 2px; background: var(--text-primary); transition: all 0.25s var(--ease); }
.mobile-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg-void);
  z-index: 490;
  padding: 100px 28px 40px;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu ul { display: flex; flex-direction: column; }
.mobile-menu > ul > li { border-bottom: 1px solid var(--line); }
.mobile-menu > ul > li > a { display: flex; justify-content: space-between; padding: 18px 4px; font-size: 18px; font-family: var(--font-display); font-weight: 500; }
.mobile-sub { max-height: 0; overflow: hidden; transition: max-height 0.3s var(--ease); }
.mobile-sub.open { max-height: 400px; padding-bottom: 12px; }
.mobile-sub li a { padding: 10px 4px; font-size: 15px; color: var(--text-muted); font-family: var(--font-body); }
.mobile-menu .btn { margin-top: 24px; }

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--grad-strata);
  z-index: 600;
  width: 0%;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 100px;
  padding-bottom: 60px;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; background: var(--bg-void); }
.hero-bg video, .hero-bg .poster-fallback {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.hero-bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 20%, rgba(139,127,255,0.16), transparent 60%),
    radial-gradient(ellipse 60% 60% at 80% 80%, rgba(52,216,232,0.10), transparent 60%),
    linear-gradient(180deg, rgba(5,7,12,0.55) 0%, rgba(5,7,12,0.78) 60%, rgba(5,7,12,0.95) 100%);
  z-index: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 780px; }
.hero-content h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.4rem);
  color: var(--text-primary);
  margin-bottom: 26px;
}
.hero-content h1 em {
  font-style: normal;
  background: var(--grad-strata);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll-cue {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll-cue .line { width: 1px; height: 34px; background: linear-gradient(var(--cyan), transparent); animation: scrollpulse 2s ease-in-out infinite; }
@keyframes scrollpulse { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }

/* ---------- Sections ---------- */
section { position: relative; padding: 120px 0; }
.section-tight { padding: 90px 0; }
.section-head { max-width: 680px; margin-bottom: 64px; }
.section-head h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); margin-bottom: 18px; }
.section-head p { color: var(--text-muted); font-size: 1.08rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-alt { background: var(--bg-void); }

.divider-strata { height: 1px; background: var(--line); position: relative; }
.divider-strata::after {
  content: '';
  position: absolute; top: -1px; left: 0;
  width: 140px; height: 3px;
  background: var(--grad-strata);
}

/* ---------- Cards ---------- */
.card-grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), background 0.3s var(--ease);
}
.card:hover { border-color: var(--line-strong); transform: translateY(-4px); background: var(--bg-elevated-2); }
.card .icon-badge { margin-bottom: 22px; }
.card h3 { font-size: 1.28rem; margin-bottom: 12px; }
.card p { color: var(--text-muted); font-size: 0.98rem; }
.card ul { margin-top: 16px; display: flex; flex-direction: column; gap: 9px; }
.card ul li { font-size: 0.92rem; color: var(--text-muted); display: flex; gap: 10px; align-items: flex-start; }
.card ul li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); margin-top: 7px; flex-shrink: 0; }
.card-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; color: var(--cyan); font-size: 0.92rem; font-weight: 600; }
.card-link svg { transition: transform 0.2s; }
.card:hover .card-link svg { transform: translateX(4px); }

.icon-badge {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--cyan-dim);
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
}

/* ---------- Service detail rows ---------- */
.service-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.service-row.reverse .service-visual { order: 2; }
.service-visual {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  min-height: 340px;
  display: flex; align-items: center; justify-content: center;
}
.service-copy h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); margin-bottom: 16px; }
.service-copy > p { color: var(--text-muted); margin-bottom: 24px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  color: var(--text-muted);
}
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.feature-list li { font-size: 0.94rem; color: var(--text-muted); display: flex; gap: 9px; }
.feature-list li::before { content: '→'; color: var(--cyan); flex-shrink: 0; }

/* ---------- Flow diagram (about journey / architecture) ---------- */
.flow-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  position: relative;
}
.flow-node {
  flex: 1;
  min-width: 130px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  position: relative;
}
.flow-node .fnum { font-family: var(--font-mono); font-size: 11px; color: var(--cyan); display: block; margin-bottom: 8px; }
.flow-node h4 { font-size: 0.98rem; font-weight: 600; }
.flow-arrow { flex: 0 0 auto; color: var(--text-faint); width: 22px; height: 22px; }
@media (max-width: 860px) {
  .flow-track { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
  .flow-node { width: 100%; }
}

/* ---------- Architecture diagram ---------- */
.arch-diagram { display: flex; flex-direction: column; gap: 0; }
.arch-tier {
  display: flex; align-items: center; gap: 20px;
  padding: 26px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  position: relative;
}
.arch-tier + .arch-tier { margin-top: 14px; }
.arch-tier .tier-label { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; width: 170px; flex-shrink: 0; }
.arch-tier .tier-items { display: flex; flex-wrap: wrap; gap: 10px; flex: 1; }
.arch-tier .tier-items span {
  font-size: 13px; padding: 7px 14px; border-radius: 20px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--line);
  color: var(--text-muted);
}
.arch-tier.highlight { border-color: rgba(52,216,232,0.35); background: linear-gradient(90deg, rgba(52,216,232,0.06), rgba(139,127,255,0.06)); }
.arch-connector { width: 1px; height: 14px; background: var(--line-strong); margin-left: 30px; }
.arch-flow-dot {
  position: absolute; left: -5px; top: 50%;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: flowdot 3.2s linear infinite;
}
@keyframes flowdot { 0% { top: -6px; opacity:0; } 10%{opacity:1;} 90% {opacity:1;} 100% { top: 100%; opacity: 0; } }

/* ---------- Stats / why ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.stat-cell { background: var(--bg-elevated); padding: 36px 28px; }
.stat-cell .icon-badge { margin-bottom: 20px; }
.stat-cell h4 { font-size: 1.05rem; margin-bottom: 8px; }
.stat-cell p { font-size: 0.88rem; color: var(--text-muted); }

/* ---------- Process timeline ---------- */
.process-list { display: flex; flex-direction: column; }
.process-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}
.process-item:first-child { padding-top: 0; }
.process-item .pnum { font-family: var(--font-mono); font-size: 2rem; color: var(--text-faint); font-weight: 300; transition: color .3s; }
.process-item:hover .pnum { color: var(--cyan); }
.process-item h3 { font-size: 1.25rem; margin-bottom: 8px; }
.process-item p { color: var(--text-muted); max-width: 560px; }

/* ---------- Industries ---------- */
.industry-chip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.industry-chip {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex; align-items: center; gap: 16px;
  transition: border-color .3s, background .3s;
}
.industry-chip:hover { border-color: var(--line-strong); background: var(--bg-elevated); }
.industry-chip .icon-badge { flex-shrink: 0; width: 44px; height: 44px; }
.industry-chip h4 { font-size: 1rem; }

/* ---------- Insights ---------- */
.article-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color .3s, transform .3s;
}
.article-card:hover { border-color: var(--line-strong); transform: translateY(-4px); }
.article-thumb {
  height: 160px;
  background: linear-gradient(135deg, rgba(52,216,232,0.14), rgba(139,127,255,0.14));
  position: relative;
  overflow: hidden;
}
.article-body { padding: 26px 28px 30px; display: flex; flex-direction: column; flex: 1; }
.article-meta { display: flex; gap: 12px; align-items: center; font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); margin-bottom: 14px; text-transform: uppercase; letter-spacing: 0.06em; }
.article-meta .cat { color: var(--cyan); }
.article-body h3 { font-size: 1.15rem; margin-bottom: 10px; }
.article-body p { color: var(--text-muted); font-size: 0.92rem; flex: 1; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.field label .opt { font-weight: 400; color: var(--text-faint); }
.field input, .field select, .field textarea {
  background: var(--bg-void);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); outline: none; }
.field textarea { resize: vertical; min-height: 120px; }
.field-error { font-size: 12.5px; color: #FF8080; min-height: 16px; }
.checkbox-row { display: flex; gap: 12px; align-items: flex-start; }
.checkbox-row input { margin-top: 3px; accent-color: var(--cyan); }
.checkbox-row label { font-size: 13px; color: var(--text-muted); font-weight: 400; }
.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-status { padding: 16px 18px; border-radius: var(--radius-sm); font-size: 14px; margin-top: 20px; display: none; }
.form-status.success { display: block; background: rgba(52,216,232,0.1); border: 1px solid rgba(52,216,232,0.3); color: var(--cyan); }
.form-status.error { display: block; background: rgba(255,90,90,0.08); border: 1px solid rgba(255,90,90,0.3); color: #FF9B9B; }

/* ---------- Contact page blocks ---------- */
.contact-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; }
.office-card { border: 1px solid var(--line); border-radius: var(--radius-md); padding: 24px; margin-bottom: 16px; }
.office-card h4 { font-size: 1rem; margin-bottom: 6px; color: var(--cyan); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; font-size: 12px;}
.office-card address { font-style: normal; color: var(--text-muted); line-height: 1.7; font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band {
  border-radius: var(--radius-lg);
  padding: 70px 60px;
  background: radial-gradient(circle at 20% 20%, rgba(139,127,255,0.18), transparent 55%), radial-gradient(circle at 80% 80%, rgba(52,216,232,0.14), transparent 55%), var(--bg-elevated);
  border: 1px solid var(--line);
  text-align: center;
}
.cta-band h2 { font-size: clamp(1.7rem,3vw,2.4rem); margin-bottom: 16px; }
.cta-band p { color: var(--text-muted); max-width: 520px; margin: 0 auto 32px; }
.cta-band .hero-actions { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-void); border-top: 1px solid var(--line); padding: 80px 0 30px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 60px; }
.footer-brand p { color: var(--text-muted); font-size: 0.92rem; margin: 18px 0 20px; max-width: 280px; }
.footer-brand .nav-logo img { height: 40px; }
.footer-col h5 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { color: var(--text-muted); font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 26px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { color: var(--text-faint); font-size: 12.5px; }
.footer-bottom .legal-links { display: flex; gap: 20px; }
.footer-bottom .legal-links a { color: var(--text-faint); font-size: 12.5px; }
.footer-bottom .legal-links a:hover { color: var(--cyan); }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 400;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s var(--ease);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { display: flex; gap: 8px; align-items: center; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin-bottom: 20px; }
.breadcrumbs a { color: var(--text-faint); }
.breadcrumbs a:hover { color: var(--cyan); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { padding: 170px 0 80px; position: relative; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); margin-bottom: 18px; max-width: 780px; }
.page-hero p { color: var(--text-muted); font-size: 1.08rem; max-width: 620px; }

/* ---------- Page photo band ---------- */
.page-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  max-height: 420px;
}
.page-photo img { display: block; width: 100%; height: 100%; max-height: 420px; object-fit: cover; }
.page-hero .bg-grid {
  position: absolute; inset: 0; z-index: -1; opacity: 0.5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black, transparent 80%);
}

/* ---------- 404 ---------- */
.error-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 120px 24px; }
.error-code { font-family: var(--font-mono); font-size: clamp(4rem,14vw,8rem); background: var(--grad-strata); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; margin-bottom: 20px; }

/* ---------- Utility ---------- */
.mt-40 { margin-top: 40px; }
.text-center { text-align: center; }
.mono { font-family: var(--font-mono); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .mobile-toggle { display: flex; }
  .service-row, .service-row.reverse { grid-template-columns: 1fr; }
  .service-row.reverse .service-visual { order: 0; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .industry-chip-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  section { padding: 80px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .form-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .arch-tier { flex-direction: column; align-items: flex-start; gap: 12px; }
  .arch-tier .tier-label { width: auto; }
  .industry-chip-grid { grid-template-columns: 1fr; }
  .process-item { grid-template-columns: 50px 1fr; gap: 16px; }
  .cta-band { padding: 50px 26px; }
}