@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&display=swap');

/* ── ROOT TOKENS ─────────────────────────────────────────── */
:root {
  --black:        #0A0A0A;
  --graphite:     #111111;
  --graphite-mid: #161616;
  --graphite-lt:  #1E1E1E;
  --surface:      #141414;
  --surface-mid:  #1A1A1A;
  --blue:         #2D8CFF;
  --blue-dark:    #1A6DD4;
  --blue-deep:    #0D3F80;
  --blue-dim:     rgba(45,140,255,0.1);
  --blue-border:  rgba(45,140,255,0.25);
  --blue-glow:    rgba(45,140,255,0.15);
  --silver:       #D9D9D9;
  --silver-mid:   #9A9A9A;
  --silver-dim:   #555555;
  --white:        #FFFFFF;
  --border:       rgba(255,255,255,0.07);
  --border-mid:   rgba(255,255,255,0.12);
  --text-body:    rgba(255,255,255,0.65);
  --text-muted:   rgba(255,255,255,0.38);
  --nav-h:        72px;
  --ease:         0.3s ease;
  --max-w:        1200px;
  --section-pad:  96px;
}

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

/* ── PAGE VISIBILITY ─────────────────────────────────────── */
.page-section { display: none; }
.page-section.active {
  display: block;
  animation: fadeSlideIn 0.4s ease;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── LAYOUT HELPERS ──────────────────────────────────────── */
.max-w { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }
.section-pad { padding: var(--section-pad) 0; }
.section-pad-sm { padding: 64px 0; }
.section-alt { background: var(--graphite); }
.section-dark { background: var(--surface); }
.section-deep { background: linear-gradient(160deg,#050d1a 0%,var(--black) 100%); }

/* ── TYPOGRAPHY ──────────────────────────────────────────── */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 10px; font-weight: 700; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--blue);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: ''; display: block;
  width: 24px; height: 1px;
  background: var(--blue);
}
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; }
.h-display { font-size: clamp(36px, 5vw, 60px); font-weight: 900; }
.h-section  { font-size: clamp(28px, 3.5vw, 42px); font-weight: 800; }
.h-card     { font-size: 18px; font-weight: 700; }
.text-blue  { color: var(--blue); }
.text-silver{ color: var(--silver); }
.text-body  { color: var(--text-body); font-size: 15px; line-height: 1.75; }
.text-muted { color: var(--text-muted); font-size: 13px; }

/* ── HORIZONTAL RULE ─────────────────────────────────────── */
.hr-blue {
  width: 100%; height: 1px;
  background: linear-gradient(90deg,transparent,var(--blue-border) 50%,transparent);
  margin: 0;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.04em;
  padding: 12px 28px; border-radius: 6px;
  border: none; transition: all var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg,var(--blue-dark),var(--blue));
  color: #fff;
  box-shadow: 0 4px 20px rgba(45,140,255,0.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(45,140,255,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--silver);
  border: 1px solid var(--border-mid);
}
.btn-outline:hover {
  border-color: var(--blue-border);
  color: var(--blue);
  background: var(--blue-dim);
}
.btn-ghost {
  background: transparent;
  color: var(--blue);
  padding: 0;
  gap: 6px;
  font-size: 13px;
}
.btn-ghost:hover { gap: 10px; }
.btn-ghost::after { content: '→'; }
.btn-lg { padding: 15px 36px; font-size: 14px; }

/* ── NAV ─────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h);
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--ease), box-shadow var(--ease), border-color var(--ease);
}
nav.scrolled {
  background: rgba(10,10,10,0.98);
  border-bottom-color: var(--blue-border);
  box-shadow: 0 4px 40px rgba(0,0,0,0.5);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  height: 100%; display: flex; align-items: center;
  justify-content: space-between; gap: 32px;
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.nav-logo-mark {
  width: 36px; height: 36px; flex-shrink: 0;
}
.nav-brand-text {
  font-size: 16px; font-weight: 900;
  letter-spacing: 0.06em; line-height: 1;
}
.nav-brand-text .ai { color: var(--blue); }
.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none;
}
.nav-links a {
  font-size: 13px; font-weight: 500;
  color: var(--text-muted);
  padding: 8px 14px; border-radius: 6px;
  transition: color var(--ease), background var(--ease);
  cursor: pointer; letter-spacing: 0.01em;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.05); }
.nav-links a.active { color: var(--blue); background: var(--blue-dim); }
.nav-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: 4px; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--silver); border-radius: 2px;
  transition: all 0.25s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  background: #050810;
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(45,140,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,140,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute; top: 10%; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 500px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(45,140,255,0.1) 0%, transparent 65%);
}
.hero-glow-bottom {
  position: absolute; bottom: -100px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 300px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(45,140,255,0.07) 0%, transparent 70%);
}
.hero-content {
  position: relative; z-index: 2;
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  text-align: center;
}
.hero-logo {
  width: 90px; height: 90px; margin: 0 auto 32px;
  filter: drop-shadow(0 0 28px rgba(45,140,255,0.4));
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(45,140,255,0.08);
  border: 1px solid var(--blue-border);
  border-radius: 100px; padding: 7px 18px;
  margin-bottom: 28px;
}
.hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.hero-badge-text {
  font-size: 11px; font-weight: 700; color: var(--blue);
  letter-spacing: 0.14em; text-transform: uppercase;
}
.hero h1 { color: var(--white); margin-bottom: 22px; max-width: 820px; margin-left: auto; margin-right: auto; }
.hero-sub {
  font-size: 17px; color: var(--text-body);
  max-width: 560px; margin: 0 auto 40px; line-height: 1.75;
}
.hero-ctas { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-checks {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 8px 24px;
}
.hero-check {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 500; color: var(--text-muted);
}
.check-dot {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.check-dot svg { width: 10px; height: 10px; }

/* ── SECTION HEADERS ─────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { margin-bottom: 16px; }
.section-header p { max-width: 560px; margin: 0 auto; }

/* ── STAT BAR ────────────────────────────────────────────── */
.stat-bar {
  background: var(--graphite);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.stat-grid {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 0;
}
.stat-item {
  text-align: center; padding: 0 32px;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 38px; font-weight: 900; color: var(--white);
  line-height: 1; margin-bottom: 6px; letter-spacing: -0.03em;
}
.stat-num span { color: var(--blue); }
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; letter-spacing: 0.04em; }

/* ── PROBLEM BAND ────────────────────────────────────────── */
.problem-band {
  background: var(--graphite-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
  text-align: center;
}
.problem-band h2 { margin-bottom: 16px; }
.problem-band p { max-width: 620px; margin: 0 auto; }
.problem-band .accent { color: var(--silver); font-weight: 600; }

/* ── SERVICE CARDS ───────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.service-card {
  background: var(--surface-mid);
  border: 1px solid var(--border);
  border-radius: 12px; padding: 28px;
  transition: border-color var(--ease), transform var(--ease);
  cursor: default;
}
.service-card:hover {
  border-color: var(--blue-border);
  transform: translateY(-2px);
}
.svc-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.svc-icon svg { width: 22px; height: 22px; }
.svc-num { font-size: 10px; font-weight: 700; color: var(--blue); letter-spacing: 0.15em; margin-bottom: 8px; }
.svc-title { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 10px; line-height: 1.3; }
.svc-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 18px; }
.svc-bullets { margin-bottom: 20px; }
.svc-bullets li {
  font-size: 12px; color: var(--text-muted);
  padding: 3px 0 3px 16px; position: relative; line-height: 1.5;
}
.svc-bullets li::before {
  content: ''; position: absolute; left: 0; top: 10px;
  width: 6px; height: 1px; background: var(--blue);
}
.svc-cta {
  font-size: 12px; font-weight: 700; color: var(--blue);
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap var(--ease);
}
.svc-cta:hover { gap: 10px; }

/* Full-width service card */
.service-card.full {
  grid-column: 1 / -1;
  display: flex; gap: 32px; align-items: flex-start;
}
.service-card.full .svc-body { flex: 1; }
.service-card.full .svc-bullets {
  columns: 2; gap: 8px; margin-bottom: 0;
}

/* ── ABOUT PILLARS ───────────────────────────────────────── */
.pillars-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 56px; }
.pillar {
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px 24px; text-align: center;
}
.pillar-num {
  font-size: 44px; font-weight: 900; color: var(--blue);
  letter-spacing: -0.04em; line-height: 1; margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.pillar-title { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.pillar-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ── DIFF CARDS ──────────────────────────────────────────── */
.diff-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.diff-card {
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px;
}
.diff-icon {
  font-size: 22px; margin-bottom: 14px;
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
}
.diff-title { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.diff-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ── PROCESS STEPS ───────────────────────────────────────── */
.process-track {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 0; position: relative; margin-top: 48px;
}
.process-track::before {
  content: '';
  position: absolute; top: 28px; left: 12%; right: 12%;
  height: 1px; background: linear-gradient(90deg,transparent,var(--blue-border) 20%,var(--blue-border) 80%,transparent);
  z-index: 0;
}
.process-step { text-align: center; padding: 0 16px; position: relative; z-index: 1; }
.step-circle {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--graphite); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 14px; font-weight: 800; color: var(--blue);
  transition: background var(--ease), box-shadow var(--ease);
}
.process-step:hover .step-circle {
  background: var(--blue-dim);
  box-shadow: 0 0 20px rgba(45,140,255,0.2);
}
.step-title { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.step-desc { font-size: 12px; color: var(--text-muted); line-height: 1.7; }

/* ── WHO WE SERVE ────────────────────────────────────────── */
.serve-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.serve-card {
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: 10px; padding: 22px;
  transition: border-color var(--ease);
}
.serve-card:hover { border-color: var(--blue-border); }
.serve-icon {
  font-size: 20px; margin-bottom: 12px;
  width: 38px; height: 38px; border-radius: 8px;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
}
.serve-title { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.serve-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0; cursor: pointer; gap: 20px;
  font-size: 15px; font-weight: 600; color: var(--white);
  transition: color var(--ease);
}
.faq-q:hover { color: var(--blue); }
.faq-chevron {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--blue); font-size: 12px;
  transition: transform var(--ease), background var(--ease);
}
.faq-item.open .faq-chevron { transform: rotate(180deg); background: var(--blue-border); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  font-size: 14px; color: var(--text-muted); line-height: 1.75;
}
.faq-item.open .faq-a { max-height: 200px; padding-bottom: 22px; }

/* ── QUOTE BLOCK ─────────────────────────────────────────── */
.quote-block {
  background: var(--blue-dim);
  border: 1px solid var(--blue-border);
  border-left: 3px solid var(--blue);
  border-radius: 0 12px 12px 0;
  padding: 28px 32px;
  max-width: 760px; margin: 56px auto;
}
.quote-text {
  font-size: 18px; font-weight: 600; color: var(--white);
  line-height: 1.6; margin-bottom: 14px; font-style: italic;
}
.quote-attr { font-size: 13px; color: var(--blue); font-weight: 700; }

/* ── CTA SECTION ─────────────────────────────────────────── */
.cta-section {
  position: relative; overflow: hidden;
  text-align: center; padding: 96px 0;
  background: linear-gradient(160deg,#050d1a 0%,var(--black) 100%);
  border-top: 1px solid rgba(45,140,255,0.1);
}
.cta-glow {
  position: absolute; bottom: -60px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 300px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(45,140,255,0.08) 0%, transparent 70%);
}
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { max-width: 500px; margin: 0 auto 36px; }
.cta-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; position: relative; z-index: 2; }

/* ── CONTACT FORM ────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info-block { display: flex; flex-direction: column; gap: 24px; }
.contact-info-item {
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: 12px; padding: 22px;
  display: flex; align-items: flex-start; gap: 16px;
}
.contact-info-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--blue-dim); border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-info-icon svg { width: 18px; height: 18px; }
.contact-info-label { font-size: 11px; font-weight: 700; color: var(--blue); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 4px; }
.contact-info-val { font-size: 14px; color: var(--text-body); }
.form-panel {
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: 16px; padding: 36px;
}
.form-group { margin-bottom: 20px; }
.form-label {
  display: block; font-size: 12px; font-weight: 700;
  color: var(--silver-mid); letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 8px;
}
.form-input {
  width: 100%; padding: 13px 16px;
  background: var(--graphite-mid); border: 1px solid var(--border-mid);
  border-radius: 8px; color: var(--white); font-size: 14px;
  font-family: inherit; transition: border-color var(--ease), background var(--ease);
  outline: none;
}
.form-input:focus { border-color: var(--blue); background: var(--graphite-lt); }
.form-input::placeholder { color: var(--text-muted); }
select.form-input { cursor: pointer; }
textarea.form-input { resize: vertical; min-height: 120px; line-height: 1.6; }
.form-input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── MODAL ───────────────────────────────────────────────── */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.75);
  align-items: center; justify-content: center;
  padding: 20px; backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  background: var(--graphite-mid);
  border: 1px solid var(--blue-border);
  border-top: 3px solid var(--blue);
  border-radius: 16px;
  padding: 48px 40px 40px;
  max-width: 480px; width: 100%;
  position: relative;
  animation: slideUp 0.25s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-close {
  position: absolute; top: 18px; right: 22px;
  background: var(--graphite-lt); border: 1px solid var(--border);
  width: 30px; height: 30px; border-radius: 50%;
  color: var(--text-muted); font-size: 18px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: color var(--ease), background var(--ease);
}
.modal-close:hover { color: var(--white); background: var(--border-mid); }
.modal-icon { font-size: 32px; color: var(--blue); text-align: center; margin-bottom: 14px; }
.modal-title {
  font-size: 20px; font-weight: 800; color: var(--white);
  text-align: center; margin-bottom: 12px; letter-spacing: -0.02em;
}
.modal-body { font-size: 14px; color: var(--text-muted); text-align: center; line-height: 1.7; margin-bottom: 16px; }
.modal-detail {
  background: var(--graphite-lt); border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px; font-size: 13px; color: var(--text-body); line-height: 1.6;
  margin-bottom: 24px;
}

/* ── SCROLL REVEAL ───────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── BACK TO TOP ─────────────────────────────────────────── */
#backToTop {
  position: fixed; bottom: 32px; right: 32px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--graphite-mid);
  border: 1px solid var(--blue-border);
  color: var(--blue); font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
  z-index: 50;
}
#backToTop.visible { opacity: 1; pointer-events: auto; }
#backToTop:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(45,140,255,0.3); }

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  background: #060606;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-logo { width: 38px; height: 38px; }
.footer-name { font-size: 15px; font-weight: 900; letter-spacing: 0.06em; color: var(--white); }
.footer-name .ai { color: var(--blue); }
.footer-tagline { font-size: 11px; color: var(--text-muted); font-style: italic; margin-top: 2px; }
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; max-width: 280px; margin-bottom: 24px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--graphite-lt); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 14px;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.social-btn:hover { color: var(--blue); border-color: var(--blue-border); background: var(--blue-dim); }
.footer-col-title {
  font-size: 11px; font-weight: 700; color: var(--silver);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 13px; color: var(--text-muted);
  transition: color var(--ease); cursor: pointer;
}
.footer-links a:hover { color: var(--blue); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom-text { font-size: 12px; color: var(--text-muted); }
.footer-bottom-right { display: flex; gap: 20px; }
.footer-bottom-right a { font-size: 12px; color: var(--text-muted); cursor: pointer; transition: color var(--ease); }
.footer-bottom-right a:hover { color: var(--blue); }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .max-w { padding: 0 24px; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .service-card.full { flex-direction: column; }
  .service-card.full .svc-bullets { columns: 1; }
  .pillars-grid { grid-template-columns: 1fr 1fr; }
  .process-track { grid-template-columns: 1fr 1fr; gap: 24px; }
  .process-track::before { display: none; }
  .diff-grid { grid-template-columns: 1fr; }
  .serve-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); padding-bottom: 24px; }
  .stat-item:nth-child(2n) { border-bottom-color: transparent; }
}
@media (max-width: 640px) {
  :root { --section-pad: 64px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(10,10,10,0.97); backdrop-filter: blur(20px);
    padding: 20px 24px 32px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }
  .nav-links.open a { width: 100%; padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr 1fr; }
  .process-track { grid-template-columns: 1fr; }
  .serve-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .hero-ctas { flex-direction: column; align-items: center; }
  h1.h-display { font-size: 34px; }
  .form-input-row { grid-template-columns: 1fr; }
}