/* ============================================================
   Blackeane Consulting — Design System v4
   Enterprise AI Advisory — Premium Refinement
   Obsidian · Silver · Playfair · Editorial Minimalism
   ============================================================ */

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

/* ─── Root Tokens ─────────────────────────────────────────── */
:root {
  --bg:          #08090d;
  --bg-mid:      #0c0d12;
  --surface:     #111217;
  --surface-2:   #16171d;
  --surface-3:   #1c1d24;
  --border:      rgba(255,255,255,0.06);
  --border-hi:   rgba(255,255,255,0.11);

  --silver:      #b8bcc8;
  --silver-dim:  #6b7084;
  --silver-dark: #3a3d4a;
  --gold:        #c9a96e;
  --gold-dim:    rgba(201,169,110,0.12);

  --accent:      #2563eb;
  --accent-hi:   #3b82f6;
  --accent-glow: rgba(37,99,235,0.15);
  --accent-faint: rgba(37,99,235,0.06);

  --text-1:      #e8e9ed;
  --text-2:      #828599;
  --text-3:      #484b5e;

  --font-serif:  'Playfair Display', Georgia, serif;
  --font-body:   'Inter', system-ui, sans-serif;
  --font-mono:   'Roboto Mono', 'Courier New', monospace;

  --max-w:       85rem;
  --max-w-narrow: 60rem;
  --radius:      3px;
  --transition:  0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ─── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Subtle grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

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

::selection {
  background: rgba(37,99,235,0.25);
  color: var(--text-1);
}

/* ─── Layout Utilities ────────────────────────────────────── */
.container        { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.container-narrow { width: 100%; max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 2rem; }
.text-center      { text-align: center; }
.mx-auto          { margin-left: auto; margin-right: auto; }
.w-fit            { width: fit-content; }
.relative         { position: relative; }

.flex          { display: flex; }
.flex-col      { flex-direction: column; }
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap     { flex-wrap: wrap; }
.gap-1  { gap: 0.25rem; }
.gap-2  { gap: 0.5rem; }
.gap-3  { gap: 0.75rem; }
.gap-4  { gap: 1rem; }
.gap-5  { gap: 1.25rem; }
.gap-6  { gap: 1.5rem; }
.gap-8  { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }

.grid           { display: grid; }
.grid-cols-1    { grid-template-columns: 1fr; }
.grid-cols-2    { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3    { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4    { grid-template-columns: repeat(4, 1fr); }

.mt-2  { margin-top: 0.5rem; }
.mt-3  { margin-top: 0.75rem; }
.mt-4  { margin-top: 1rem; }
.mt-5  { margin-top: 1.25rem; }
.mt-6  { margin-top: 1.5rem; }
.mt-8  { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mb-2  { margin-bottom: 0.5rem; }
.mb-3  { margin-bottom: 0.75rem; }
.mb-4  { margin-bottom: 1rem; }
.mb-5  { margin-bottom: 1.25rem; }
.mb-6  { margin-bottom: 1.5rem; }
.mb-8  { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-14 { margin-bottom: 3.5rem; }
.mb-16 { margin-bottom: 4rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }
.px-6  { padding-left: 1.5rem; padding-right: 1.5rem; }

/* ─── Section Backgrounds ─────────────────────────────────── */
.bg-hero {
  background: linear-gradient(180deg, #0a0b12 0%, var(--bg) 100%);
  position: relative;
  overflow: hidden;
}
/* Hero ambient radial glow */
.bg-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.bg-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--border-hi) 50%, transparent 100%);
  pointer-events: none;
}

.bg-section-alt {
  background: var(--bg-mid);
  position: relative;
}
.bg-section-alt::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%);
  pointer-events: none;
}
.bg-section-alt::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--border) 50%, transparent 100%);
  pointer-events: none;
}

.bg-stripe {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ─── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  letter-spacing: -0.02em;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 700;
  color: var(--text-1);
}
h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--text-1);
}
h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-1);
}
h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-1);
}

.text-sm   { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg   { font-size: 1.125rem; }
.text-xl   { font-size: 1.25rem; }
.text-2xl  { font-size: 1.5rem; }
.text-3xl  { font-size: 1.875rem; }

.text-muted     { color: var(--text-2); }
.text-dim       { color: var(--text-3); }
.text-white     { color: var(--text-1); }
.text-silver    { color: var(--silver); }
.text-accent    { color: var(--accent-hi); }

.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }
.font-black    { font-weight: 900; }

.leading-relaxed { line-height: 1.75; }
.leading-snug    { line-height: 1.35; }

/* Gradient accent for secondary headline text */
.text-blue-gradient {
  background: linear-gradient(135deg, var(--silver) 0%, var(--silver-dim) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Editorial Separators ────────────────────────────────── */
.editorial-rule {
  width: 3rem;
  height: 1px;
  background: var(--accent);
  opacity: 0.4;
  margin: 2rem auto;
}
.editorial-rule-left {
  width: 3rem;
  height: 1px;
  background: var(--accent);
  opacity: 0.4;
  margin: 1.5rem 0;
}

/* ─── Section Labels (monospace tags) ────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver-dim);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.35rem 0.9rem;
  margin-bottom: 1.25rem;
  background: rgba(255,255,255,0.015);
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--silver-dim);
  text-transform: uppercase;
}

/* ─── Nav ────────────────────────────────────────────────────── */
#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2.5rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
  border-bottom: 1px solid transparent;
}
#main-nav.scrolled {
  background: rgba(8,9,13,0.92);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--silver-dim);
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: color var(--transition);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  background: none;
}
.nav-link:hover { color: var(--text-2); }
.nav-link.active { color: var(--silver); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.9rem;
  right: 0.9rem;
  height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Nav divider line before CTA */
.nav-divider {
  width: 1px;
  height: 1.25rem;
  background: var(--border);
  margin: 0 0.25rem;
}

/* ─── Logo Mark ───────────────────────────────────────────────── */
.logo-mark {
  width: 7rem;
  height: 7rem;
  border-radius: var(--radius);
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.logo-text {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 0.02em;
}
.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.16em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-top: 2px;
}

/* ─── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  box-shadow: 0 1px 3px rgba(37,99,235,0.3), 0 4px 16px rgba(37,99,235,0.15);
}
.btn-primary:hover {
  background: var(--accent-hi);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(37,99,235,0.4), 0 8px 24px rgba(37,99,235,0.2);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--silver-dim);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-hi);
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: all var(--transition);
}
.btn-outline:hover {
  border-color: var(--silver-dark);
  color: var(--silver);
  transform: translateY(-1px);
  background: rgba(255,255,255,0.02);
}

.btn-sm {
  font-size: 0.75rem;
  padding: 0.5rem 1.1rem;
  letter-spacing: 0.03em;
}

/* ─── Glass Cards ─────────────────────────────────────────── */
.glass-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.glass-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

/* ─── Pillar Cards (Homepage) ─────────────────────────────── */
.pillar-card {
  background: linear-gradient(160deg, var(--surface) 0%, var(--bg-mid) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.75rem 2.25rem 2.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.pillar-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.pillar-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, var(--accent-faint) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.pillar-card:hover {
  border-color: rgba(37,99,235,0.2);
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(37,99,235,0.08);
}
.pillar-card:hover::before { opacity: 0.6; }
.pillar-card:hover::after { opacity: 1; }

.pillar-number {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.pillar-number::before {
  content: '';
  display: inline-block;
  width: 1.75rem;
  height: 1px;
  background: var(--text-3);
}

.pillar-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--surface-2) 0%, var(--surface-3) 100%);
  border: 1px solid var(--border-hi);
  margin-bottom: 1.5rem;
  color: var(--silver-dim);
  transition: color var(--transition), border-color var(--transition);
}
.pillar-card:hover .pillar-icon {
  color: var(--accent-hi);
  border-color: rgba(37,99,235,0.25);
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* ─── Service Blocks ──────────────────────────────────────── */
.service-block {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: start;
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.service-block:last-child { border-bottom: none; }

.service-number {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-hi);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.service-number::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-faint) 0%, transparent 100%);
  max-width: 6rem;
}

.service-title {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--text-2);
  line-height: 1.8;
}

.service-details {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.service-detail-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.5;
  padding: 0.95rem 1.25rem;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.service-detail-item:last-child { border-bottom: none; }
.service-detail-item:hover { background: rgba(255,255,255,0.015); }

.service-check {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 2px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
}
.service-check svg {
  width: 0.45rem;
  height: 0.45rem;
}

/* ─── Case Study Template ─────────────────────────────────── */
.case-study-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.case-study-section {
  padding: 3rem 3rem;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.case-study-section:last-child { border-bottom: none; }

.case-study-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-hi);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.case-study-label::before {
  content: '';
  width: 2.5rem;
  height: 1px;
  background: var(--accent);
  opacity: 0.5;
}

.case-study-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 1rem;
  font-style: italic;
}

.case-study-body {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.75;
}

.case-study-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.metric-cell {
  background: var(--surface);
  padding: 2.25rem 1.5rem;
  text-align: center;
  transition: background var(--transition);
}
.metric-cell:hover { background: var(--surface-2); }

.metric-value {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1;
  margin-bottom: 0.6rem;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ─── Contact Form ────────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.form-input,
.form-textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 0.88rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input:focus,
.form-textarea:focus {
  border-color: rgba(37,99,235,0.4);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-3);
  font-size: 0.84rem;
}
.form-textarea {
  resize: vertical;
  min-height: 8rem;
  line-height: 1.6;
}

/* ─── Stats Bar ──────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  text-align: center;
  padding: 2.5rem 1rem;
  border-right: 1px solid var(--border);
  position: relative;
}
.stat-item:last-child { border-right: none; }

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1;
  padding-bottom: 0.1em;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 400;
  color: var(--text-3);
  margin-top: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ─── Check Items ────────────────────────────────────────────── */
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.55;
}
.check-icon {
  width: 1rem;
  height: 1rem;
  border-radius: 2px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.25rem;
  font-size: 0.5rem;
  color: #fff;
  font-weight: 900;
}

/* ─── Divider ────────────────────────────────────────────────── */
.blue-divider {
  width: 2.5rem;
  height: 1px;
  background: var(--accent);
  margin: 1rem 0;
  opacity: 0.5;
}

/* ─── Feature Icons ────────────────────────────────────────── */
.feature-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 1.1rem;
  flex-shrink: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--silver-dim);
}

/* ─── Calendly wrapper ───────────────────────────────────────── */
.calendly-wrapper {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #fff;
  min-height: 700px;
}

/* ─── Confidentiality Cards ──────────────────────────────── */
.confidentiality-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 2rem 2rem 2rem 1.75rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  transition: border-color var(--transition), background var(--transition);
}
.confidentiality-card:hover {
  border-left-color: var(--accent-hi);
  background: rgba(255,255,255,0.01);
}
.confidentiality-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--surface-2) 0%, var(--surface-3) 100%);
  border: 1px solid var(--border-hi);
  flex-shrink: 0;
  color: var(--silver-dim);
}

/* ─── Commitment Grid ────────────────────────────────────── */
.commitment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.commitment-cell {
  background: var(--surface);
  padding: 2.75rem 2.25rem;
  transition: background 0.4s ease;
}
.commitment-cell:hover { background: var(--surface-2); }
.commitment-cell h4 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}
.commitment-cell p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* ─── Page System (Hash Routing) ──────────────────────────── */
.page {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.page.active {
  display: block;
}
.page.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Scroll Reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Staggered children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-up {
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.animate-delay-1 { animation-delay: 0.15s; }
.animate-delay-2 { animation-delay: 0.35s; }
.animate-delay-3 { animation-delay: 0.55s; }
.animate-delay-4 { animation-delay: 0.7s; }
.animate-delay-5 { animation-delay: 0.85s; }

/* ─── Footer ─────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 1.5rem;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(37,99,235,0.15), transparent);
  margin-top: -1px;
}

.footer-full {
  width: 100%;
  padding: 0 4rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-brand {
  flex: 1;
  min-width: 280px;
}
.footer-brand p {
  font-size: 0.95rem;
  color: var(--text-2);
  max-width: 32rem;
  line-height: 1.7;
  margin-top: 0.5rem;
}

.footer-links {
  display: flex;
  gap: 6rem;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver-dim);
  margin-bottom: 1.25rem;
  font-weight: 500;
}
.footer-col a {
  display: block;
  font-size: 0.95rem;
  color: var(--text-2);
  padding: 0.4rem 0;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-1); }

.footer-bottom {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-3);
  text-transform: uppercase;
}

/* ─── CTA Section ─────────────────────────────────────────── */
.cta-section {
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ─── Responsive: Tablet Landscape (≤1024px) ───────────────── */
@media (max-width: 1024px) {
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .service-block { grid-template-columns: 1fr; gap: 2.5rem; }
  .commitment-grid { grid-template-columns: 1fr; }
  .case-study-metrics { grid-template-columns: 1fr; }
  .footer-links { gap: 3rem; }
  .footer-full { padding: 0 2.5rem; }
  .footer-brand { min-width: 100%; }
  .pillar-card { padding: 2.25rem 1.75rem 2rem; }
  .pillar-title { font-size: 1.25rem; }
  .pillar-desc { font-size: 0.84rem; }
  h1 { font-size: 2.8rem; }
  h2 { font-size: 2rem; }
}

/* ─── Responsive: Tablet Portrait / Large Mobile (≤768px) ──── */
@media (max-width: 768px) {
  /* Nav */
  #main-nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .nav-divider { display: none; }
  .mobile-menu-btn { display: flex; }
  .logo-mark { width: 4.5rem; height: 4.5rem; }
  .logo-text { font-size: 0.78rem; }

  /* Typography scaling */
  h1 { font-size: 2rem; line-height: 1.15; }
  h2 { font-size: 1.6rem; line-height: 1.2; }
  h4 { font-size: 1rem; }

  /* Layout containers */
  .container, .container-narrow { padding: 0 1.25rem; }

  /* Section spacing */
  .py-24 { padding-top: 4rem; padding-bottom: 4rem; }
  .py-32 { padding-top: 5rem; padding-bottom: 5rem; }

  /* Hero sections */
  .bg-hero { padding: 8rem 1.25rem 4rem !important; }

  /* Grids → single column */
  .grid-cols-2 { grid-template-columns: 1fr; }
  .grid-cols-3 { grid-template-columns: 1fr; }
  .grid-cols-4 { grid-template-columns: 1fr; }

  /* Pillar cards — stack and breathe */
  .pillar-card {
    padding: 2rem 1.5rem 1.75rem;
  }
  .pillar-number { margin-bottom: 1.25rem; }
  .pillar-icon { width: 2.5rem; height: 2.5rem; margin-bottom: 1.25rem; }
  .pillar-title { font-size: 1.2rem; margin-bottom: 0.6rem; }
  .pillar-desc { font-size: 0.84rem; line-height: 1.65; }

  /* Service blocks — full width, tighter */
  .service-block {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0;
  }
  .service-title { font-size: 1.4rem; }
  .service-desc { font-size: 0.88rem; }
  .service-detail-item {
    font-size: 0.82rem;
    padding: 0.85rem 1rem;
  }

  /* Stats */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1.75rem 1rem;
  }
  .stat-item:nth-child(odd) { border-right: 1px solid var(--border); }
  .stat-item:nth-last-child(-n+2) { border-bottom: none; }
  .stat-number { font-size: 2rem; }
  .stat-label { font-size: 0.55rem; }

  /* Commitment grid */
  .commitment-grid { grid-template-columns: 1fr; }
  .commitment-cell { padding: 2rem 1.5rem; }
  .commitment-cell h4 { font-size: 1rem; }
  .commitment-cell p { font-size: 0.84rem; }

  /* Case study */
  .case-study-section { padding: 2rem 1.5rem; }
  .case-study-title { font-size: 1.1rem; }
  .case-study-body { font-size: 0.85rem; }
  .case-study-metrics { grid-template-columns: 1fr; }
  .metric-cell { padding: 1.5rem 1rem; }
  .metric-value { font-size: 1.75rem; }

  /* Contact form */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-full { padding: 0 1.25rem; }
  .footer-inner {
    flex-direction: column;
    gap: 2rem;
  }
  .footer-brand { min-width: 100%; }
  .footer-brand p { font-size: 0.85rem; }
  .footer-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
    width: 100%;
  }
  .footer-col a { font-size: 0.85rem; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  /* Calendly */
  .calendly-wrapper { min-height: 550px; }

  /* CTA section glow — shrink for mobile */
  .cta-section::before {
    width: 400px;
    height: 200px;
  }

  /* Editorial rule */
  .editorial-rule { width: 2rem; }

  /* Buttons — keep inline but allow wrapping */
  .btn-primary { font-size: 0.82rem; padding: 0.75rem 1.5rem; }
  .btn-outline { font-size: 0.82rem; padding: 0.75rem 1.5rem; }
}

/* ─── Responsive: Small Mobile (≤480px) ────────────────────── */
@media (max-width: 480px) {
  /* Typography */
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.35rem; }

  /* Containers — tighter edge padding */
  .container, .container-narrow { padding: 0 1rem; }

  /* Hero */
  .bg-hero { padding: 7rem 1rem 3rem !important; }

  /* Nav */
  #main-nav { padding: 0 1rem; }
  .logo-mark { width: 3.5rem; height: 3.5rem; }
  .logo-text { font-size: 0.72rem; }
  .btn-sm { font-size: 0.68rem; padding: 0.45rem 0.85rem; }

  /* Buttons — full width on smallest screens */
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }

  /* Pillar cards */
  .pillar-card { padding: 1.5rem 1.25rem; }
  .pillar-title { font-size: 1.1rem; }
  .pillar-desc { font-size: 0.82rem; }

  /* Service blocks */
  .service-block { padding: 2.5rem 0; gap: 1.5rem; }
  .service-title { font-size: 1.25rem; }
  .service-desc { font-size: 0.84rem; line-height: 1.7; }
  .service-detail-item {
    font-size: 0.78rem;
    padding: 0.75rem 0.85rem;
    gap: 0.65rem;
  }
  .service-check { width: 0.8rem; height: 0.8rem; }
  .service-check svg { width: 0.4rem; height: 0.4rem; }

  /* Stats — single column on phones */
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0.75rem;
  }
  .stat-item:last-child { border-bottom: none; }
  .stat-number { font-size: 1.75rem; }

  /* Commitment */
  .commitment-cell { padding: 1.5rem 1.25rem; }
  .commitment-cell h4 { font-size: 0.95rem; margin-bottom: 0.75rem; }
  .commitment-cell p { font-size: 0.8rem; }

  /* Case study */
  .case-study-section { padding: 1.5rem 1.25rem; }
  .case-study-label { font-size: 0.52rem; }
  .case-study-title { font-size: 1rem; }
  .case-study-body { font-size: 0.82rem; }
  .metric-cell { padding: 1.25rem 0.75rem; }
  .metric-value { font-size: 1.5rem; }
  .metric-label { font-size: 0.52rem; }

  /* Footer */
  .footer-full { padding: 0 1rem; }
  .footer-links { gap: 1.5rem; }
  .footer-col h5 { font-size: 0.6rem; margin-bottom: 0.75rem; }
  .footer-col a { font-size: 0.82rem; padding: 0.3rem 0; }

  /* Calendly */
  .calendly-wrapper { min-height: 480px; }

  /* Section spacing */
  .py-24 { padding-top: 3rem; padding-bottom: 3rem; }
  .py-32 { padding-top: 4rem; padding-bottom: 4rem; }

  /* Section labels */
  .section-label { font-size: 0.55rem; padding: 0.3rem 0.75rem; }

  /* Confidentiality cards */
  .confidentiality-card { padding: 1.5rem 1.25rem; gap: 1rem; }
  .confidentiality-icon { width: 2rem; height: 2rem; }
}

/* ─── Responsive: Extra-small (≤360px) ─────────────────────── */
@media (max-width: 360px) {
  h1 { font-size: 1.45rem; }
  h2 { font-size: 1.2rem; }
  .container, .container-narrow { padding: 0 0.75rem; }
  .bg-hero { padding: 6rem 0.75rem 2.5rem !important; }
  .logo-mark { width: 3rem; height: 3rem; }
  .logo-text { font-size: 0.65rem; }
  .pillar-card { padding: 1.25rem 1rem; }
  .service-block { padding: 2rem 0; }
  .footer-full { padding: 0 0.75rem; }
}

/* ─── Mobile Menu ──────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--silver-dim);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.mobile-menu-btn:hover {
  color: var(--text-1);
  border-color: var(--border-hi);
  background: rgba(255,255,255,0.02);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0; right: 0; bottom: 0;
  background: rgba(8,9,13,0.98);
  backdrop-filter: blur(24px) saturate(1.3);
  z-index: 99;
  padding: 6rem 2rem 2rem;
  flex-direction: column;
  gap: 0.5rem;
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav a {
  display: block;
  padding: 1rem 0;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition);
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.01em;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--text-1); }
.mobile-nav a.active { color: var(--gold); }

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
}