/* ═══════════════════════════════════════════════════════════
   ADVERTESTING — Premium Website Stylesheet
   AI Real Estate Technologies
═══════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─────────────────────────────────────── */
:root {
  /* Brand palette */
  --navy:       #31478c;
  --navy-dark:  #243569;
  --navy-light: #3d57a8;
  --sky:        #8db4d6;
  --sky-light:  #b8d3e8;
  --sky-dark:   #6899bf;
  --steel:      #8e9ba3;
  --steel-light:#aebac1;
  --steel-dark: #697880;
  --accent:     #c49a3c; /* warm gold — restrained, premium */
  --accent-dark:#a07e2e;

  /* Semantic tokens — light mode */
  --color-bg:              #f6f5f3;
  --color-surface:         #ffffff;
  --color-surface-2:       #f0eff0;
  --color-surface-offset:  #e8e7e9;
  --color-border:          #dddce0;
  --color-divider:         #e5e4e7;
  --color-text:            #1a1c2a;
  --color-text-muted:      #5a5e70;
  --color-text-faint:      #9a9daa;
  --color-text-inverse:    #f6f5f3;
  --color-primary:         var(--navy);
  --color-primary-hover:   var(--navy-dark);
  --color-accent:          var(--accent);
  --color-accent-hover:    var(--accent-dark);
  --color-sky:             var(--sky);

  /* Type scale */
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.6vw, 1.4rem);
  --text-xl:   clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  --text-2xl:  clamp(1.9rem, 1.2rem + 2.2vw, 3.2rem);
  --text-3xl:  clamp(2.4rem, 1rem + 4vw, 4.8rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'DM Serif Display', 'Georgia', serif;
  --font-body:    'DM Sans', 'system-ui', sans-serif;

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.6rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26,28,42,0.07);
  --shadow-md: 0 4px 16px rgba(26,28,42,0.10);
  --shadow-lg: 0 12px 40px rgba(26,28,42,0.13);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* Dark mode */
[data-theme='dark'] {
  --color-bg:             #111319;
  --color-surface:        #171b26;
  --color-surface-2:      #1d2130;
  --color-surface-offset: #1a1e2a;
  --color-border:         #272d3e;
  --color-divider:        #202536;
  --color-text:           #d8dae8;
  --color-text-muted:     #8488a0;
  --color-text-faint:     #505570;
  --color-text-inverse:   #111319;
  --color-primary:        #6b87c8;
  --color-primary-hover:  #8ba0d4;
  --color-sky:            #7aaac8;
  --color-accent:         #c8a048;
  --color-accent-hover:   #d4b05a;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #111319;
    --color-surface:        #171b26;
    --color-surface-2:      #1d2130;
    --color-surface-offset: #1a1e2a;
    --color-border:         #272d3e;
    --color-divider:        #202536;
    --color-text:           #d8dae8;
    --color-text-muted:     #8488a0;
    --color-text-faint:     #505570;
    --color-text-inverse:   #111319;
    --color-primary:        #6b87c8;
    --color-primary-hover:  #8ba0d4;
    --color-sky:            #7aaac8;
    --color-accent:         #c8a048;
    --color-accent-hover:   #d4b05a;
  }
}

/* ─── BASE RESET ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  min-height: 100dvh;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }

input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.2;
  font-family: var(--font-display);
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 68ch;
}

::selection {
  background: color-mix(in srgb, var(--navy) 25%, transparent);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }

/* ─── LAYOUT ─────────────────────────────────────────────── */
.container {
  width: min(var(--content-wide), 100% - 3rem);
  margin-inline: auto;
}

/* ─── ANIMATIONS ─────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ─── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.7em 1.5em;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.btn-primary:hover {
  background: var(--navy-dark);
  border-color: var(--navy-dark);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-accent {
  background: var(--color-accent);
  color: #1a1208;
  border-color: var(--color-accent);
  font-weight: 600;
}
.btn-accent:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
}

.btn-sm { padding: 0.5em 1.1em; font-size: var(--text-xs); }
.btn-lg { padding: 0.85em 1.9em; font-size: var(--text-base); }

/* ─── BADGES ─────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3em 0.85em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-accent {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
}

/* ─── SECTION LABELS ─────────────────────────────────────── */
.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.section-label.light { color: var(--sky-light); }

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  line-height: 1.15;
  max-width: 18ch;
}
.section-heading.centered { text-align: center; max-width: 28ch; margin-inline: auto; }
.section-heading.light { color: #fff; }

.section-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-12);
  line-height: 1.7;
}
.section-intro.centered { text-align: center; margin-inline: auto; }

/* ─── STICKY HEADER ──────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-divider);
  transition: background var(--transition-interactive), box-shadow var(--transition-interactive);
}

.site-header.scrolled {
  background: color-mix(in srgb, var(--color-surface) 95%, transparent);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-4) 0;
  width: min(var(--content-wide), 100% - 3rem);
  margin-inline: auto;
}

/* Logo */
.logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo-img-wrap {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--navy) 10%, transparent);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.logo-text-block {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.logo-wordmark {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--navy);
  line-height: 1;
  letter-spacing: 0.01em;
}
[data-theme='dark'] .logo-wordmark {
  color: #8db4d6;
}

.logo-byline {
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  font-family: var(--font-body);
  line-height: 1;
}

/* Navigation */
.main-nav { margin-left: auto; }
.main-nav ul {
  display: flex;
  gap: var(--space-1);
  list-style: none;
}
.main-nav a {
  font-size: var(--text-sm);
  font-weight: 450;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
}
.mobile-menu-toggle span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}

.mobile-nav {
  display: none;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-4) min(var(--content-wide), 100% - 3rem);
  padding-inline: max(1.5rem, calc((100% - var(--content-wide))/2 + 1.5rem));
}
.mobile-nav ul { list-style: none; }
.mobile-nav li { border-bottom: 1px solid var(--color-divider); }
.mobile-nav a {
  display: block;
  padding: var(--space-4) 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-base);
}

/* ─── HERO ───────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 55%, #1a2140 100%);
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(141,180,214,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141,180,214,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}

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

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.badge-divider {
  color: rgba(141,180,214,0.5);
  font-size: var(--text-sm);
}
.hero-proof-signal {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.85);
  font-family: var(--font-body);
  letter-spacing: 0.02em;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: #ffffff;
  line-height: 1.08;
  margin-bottom: var(--space-6);
  max-width: 16ch;
}
.hero-headline em {
  font-style: italic;
  color: var(--sky-light);
}

.hero-sub {
  font-size: var(--text-lg);
  color: rgba(216,226,240,0.8);
  max-width: 54ch;
  line-height: 1.6;
  margin-bottom: var(--space-10);
  font-weight: 300;
}

.hero-ctas {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  align-items: center;
  flex-wrap: wrap;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(141,180,214,0.2);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: #fff;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.75);
  max-width: 18ch;
  line-height: 1.4;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(141,180,214,0.25);
  flex-shrink: 0;
}

/* Hero visual */
.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  opacity: 0.18;
  pointer-events: none;
}
.hero-chart-mock {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 200px;
}
.hcm-bar {
  width: 28px;
  height: var(--h);
  background: linear-gradient(to top, rgba(141,180,214,0.4), rgba(141,180,214,0.7));
  border-radius: 4px 4px 0 0;
  animation: bar-grow 1.2s var(--ease-out) both;
  animation-delay: var(--d);
}
.hcm-bar--accent {
  background: linear-gradient(to top, rgba(196,154,60,0.5), rgba(196,154,60,0.9));
}
@keyframes bar-grow {
  from { transform: scaleY(0); transform-origin: bottom; }
  to   { transform: scaleY(1); transform-origin: bottom; }
}

/* ─── WHAT IS SECTION ────────────────────────────────────── */
.section-what {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-bg);
}

.two-col-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
  margin-bottom: var(--space-16);
}

.intro-left .section-heading { margin-bottom: 0; font-size: var(--text-2xl); }

.intro-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-2);
}
.intro-right p { color: var(--color-text-muted); font-size: var(--text-base); }
.intro-right strong { color: var(--color-text); font-weight: 600; }

/* Pillar grid */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.pillar:hover {
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-primary) 30%, transparent);
  transform: translateY(-2px);
}

.pillar-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--navy) 8%, transparent);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--color-primary);
  transition: background var(--transition-interactive);
}
.pillar:hover .pillar-icon {
  background: color-mix(in srgb, var(--navy) 14%, transparent);
}

.pillar h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.pillar p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── WHAT IT TESTS ──────────────────────────────────────── */
.section-tests {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.tests-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.test-card {
  position: relative;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow: hidden;
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.test-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--navy), var(--sky));
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.test-card:hover {
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
  transform: translateY(-2px);
}
.test-card:hover::before { opacity: 1; }

.test-num {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.test-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.test-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── HOW IT WORKS ───────────────────────────────────────── */
.section-process {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-bg);
}

.process-track {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-10);
}

.process-line {
  position: absolute;
  left: 27px;
  top: 48px;
  bottom: 48px;
  width: 1px;
  background: linear-gradient(to bottom, var(--navy), color-mix(in srgb, var(--navy) 0%, transparent));
}

.process-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  position: relative;
}
.process-step:hover {
  box-shadow: var(--shadow-sm);
  border-color: color-mix(in srgb, var(--color-primary) 30%, transparent);
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  flex-shrink: 0;
  z-index: 1;
}

.step-content h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.step-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}

.step-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  list-style: none;
}
.step-tags li {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
  padding: 0.25em 0.7em;
  border-radius: var(--radius-full);
  max-width: none;
}

/* ─── BUSINESS IMPACT ────────────────────────────────────── */
.section-impact {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: linear-gradient(175deg, var(--navy-dark) 0%, var(--navy) 100%);
  position: relative;
  overflow: hidden;
}

.section-impact::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(141,180,214,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141,180,214,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
}

.section-impact .section-label { color: var(--sky-light); }
.section-impact .section-heading { color: #fff; }
.section-impact .section-intro { color: rgba(216,226,240,0.7); }

.kpi-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-5);
  position: relative;
  z-index: 1;
}

.kpi-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(141,180,214,0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  backdrop-filter: blur(8px);
  transition: background var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.kpi-card:hover {
  background: rgba(255,255,255,0.11);
  border-color: rgba(141,180,214,0.35);
  transform: translateY(-2px);
}
.kpi-card--primary {
  background: rgba(196,154,60,0.15);
  border-color: rgba(196,154,60,0.35);
}
.kpi-card--primary:hover {
  background: rgba(196,154,60,0.2);
  border-color: rgba(196,154,60,0.5);
}

.kpi-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  color: #fff;
  line-height: 1;
  margin-bottom: var(--space-3);
  font-variant-numeric: tabular-nums;
}
.kpi-card--primary .kpi-value { color: var(--accent); }

.kpi-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(235,240,250,0.97);
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

.kpi-note {
  font-size: var(--text-xs);
  color: rgba(190,210,230,0.88);
  line-height: 1.5;
}

.impact-quote {
  margin-top: var(--space-12);
  padding: var(--space-10) var(--space-12);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(141,180,214,0.15);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 1;
}
.impact-quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.88);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: var(--space-4);
  max-width: 80ch;
}
.impact-quote cite {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.7);
  font-style: normal;
  letter-spacing: 0.02em;
}

/* ─── DATA VISUALIZATION ─────────────────────────────────── */
.section-dataviz {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.chart-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-interactive);
}
.chart-card:hover { box-shadow: var(--shadow-md); }
.chart-card--full { grid-column: 1 / -1; }

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
.chart-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.chart-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.01em;
}

.chart-wrap {
  position: relative;
  height: 260px;
  margin-bottom: var(--space-5);
}
.chart-wrap--wide { height: 280px; }

.chart-insight {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  line-height: 1.5;
}
.chart-insight svg { flex-shrink: 0; color: var(--color-primary); margin-top: 1px; }

/* ─── USE CASES ──────────────────────────────────────────── */
.section-cases {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-bg);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.case-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
  transform: translateY(-3px);
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-2);
}
.case-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  padding: 0.25em 0.75em;
  border-radius: var(--radius-full);
}
.case-market {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.case-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.25;
}
.case-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-6);
}

.case-outcomes {
  display: flex;
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
}

.case-outcome {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}
.co-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.co-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.3;
}

/* ─── VIP SECTION ────────────────────────────────────────── */
.section-vip {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: linear-gradient(160deg, #0e1520 0%, #162035 50%, #1a2a3d 100%);
  position: relative;
  overflow: hidden;
}
.section-vip::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(49,71,140,0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(141,180,214,0.08) 0%, transparent 50%);
}

.vip-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.vip-left { color: #fff; }
.vip-left p {
  font-size: var(--text-base);
  color: rgba(216,226,240,0.7);
  margin-bottom: var(--space-5);
  line-height: 1.7;
}

.vip-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
  margin-top: var(--space-8);
}
.vip-benefits li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(216,226,240,0.8);
}
.vip-benefits svg { color: var(--accent); flex-shrink: 0; }

/* Form styles */
.vip-form, .contact-form {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(141,180,214,0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  backdrop-filter: blur(12px);
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.contact-form-title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-group label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.95);
}

.contact-form .form-group label {
  color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(141,180,214,0.2);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: rgba(216,226,240,0.9);
  font-size: var(--text-sm);
  width: 100%;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.contact-form .form-group input,
.contact-form .form-group select,
.contact-form .form-group textarea {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(141,180,214,0.35);
}
.contact-form .form-group input::placeholder,
.contact-form .form-group textarea::placeholder {
  color: var(--color-text-faint);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(141,180,214,0.15);
}

.contact-form .form-group input:focus,
.contact-form .form-group select:focus,
.contact-form .form-group textarea:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--navy) 12%, transparent);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%238db4d6' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

.contact-form .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%235a5e70' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
}

.form-group select option {
  background: #1a2a3d;
  color: #d8dae8;
}

.form-group textarea { resize: vertical; min-height: 90px; }

.form-submit {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-2);
}

.form-disclaimer {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.45);
  text-align: center;
  margin-top: var(--space-4);
  line-height: 1.5;
}

.form-success {
  display: none;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: rgba(106,180,60,0.12);
  border: 1px solid rgba(106,180,60,0.3);
  border-radius: var(--radius-md);
  color: #a0d880;
  font-size: var(--text-sm);
}

/* ─── TEAM ───────────────────────────────────────────────── */
.section-team {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-bg);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  align-items: start;
}

/* Horizontal card: photo left (fixed width), bio right */
.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: row;
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
  grid-column: 1 / -1; /* each card spans full width */
}
.team-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Override: 3 cards side by side, each 1/3 width, stacked vertically */
.team-grid {
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.team-portrait {
  width: 200px;
  min-width: 200px;
  flex-shrink: 0;
  background: linear-gradient(160deg,
    color-mix(in srgb, var(--navy) 90%, black) 0%,
    color-mix(in srgb, var(--navy) 60%, var(--sky)) 100%);
  position: relative;
  overflow: hidden;
}

.portrait-placeholder {
  width: 88px;
  height: 88px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
}

.team-info {
  padding: var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
}

.team-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.team-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.team-bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.team-support {
  background: color-mix(in srgb, var(--navy) 6%, transparent);
  border: 1px solid color-mix(in srgb, var(--navy) 15%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
}
.team-support-inner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  color: var(--color-text-muted);
}
.team-support-inner svg { flex-shrink: 0; color: var(--color-primary); margin-top: 2px; }
.team-support-inner p {
  font-size: var(--text-sm);
  line-height: 1.65;
  max-width: 70ch;
}

/* ─── CONTACT ────────────────────────────────────────────── */
.section-contact {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-divider);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-6);
  margin-bottom: var(--space-8);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}
.contact-item svg { flex-shrink: 0; color: var(--color-primary); margin-top: 2px; }

.ci-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}
.ci-value {
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.5;
}
a.ci-value:hover { color: var(--color-primary); }

.contact-company-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  line-height: 1.6;
}
.contact-company-note strong { color: var(--color-text); }

/* ─── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background: var(--navy-dark);
  color: rgba(216,226,240,0.7);
  padding-block: var(--space-12) var(--space-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(141,180,214,0.12);
  margin-bottom: var(--space-6);
}

.footer-brand .footer-logo {
  display: inline-flex;
  color: rgba(216,226,240,0.85);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer-logo-inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
}

.footer-logo-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  display: block;
  opacity: 1;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 6px;
  box-sizing: content-box;
}

.footer-logo-wordmark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  color: rgba(235,240,252,0.95);
  letter-spacing: 0.01em;
  line-height: 1;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(141,180,214,0.55);
  line-height: 1.6;
  max-width: 40ch;
}

.footer-nav-group {
  display: flex;
  gap: var(--space-10);
}

.footer-nav-col { flex: 1; }

.footer-nav-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(216,226,240,0.5);
  margin-bottom: var(--space-4);
}

.footer-nav-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }

.footer-nav-col a {
  font-size: var(--text-sm);
  color: rgba(141,180,214,0.65);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-nav-col a:hover { color: rgba(216,226,240,0.9); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-legal {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.4);
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}
.footer-sep { opacity: 0.4; }

.footer-contact-link a {
  font-size: var(--text-xs);
  color: rgba(141,180,214,0.6);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-contact-link a:hover { color: rgba(216,226,240,0.9); }

/* ─── MOBILE NAV ─────────────────────────────────────────── */
.mobile-nav { display: none; }

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1100px) {
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .header-actions .btn { display: none; }
  .mobile-menu-toggle { display: flex; margin-left: auto; }
  .mobile-nav.open { display: block; }

  .two-col-intro { grid-template-columns: 1fr; gap: var(--space-6); }
  .pillar-grid { grid-template-columns: 1fr 1fr; }
  .tests-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .vip-inner { grid-template-columns: 1fr; gap: var(--space-10); }
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .charts-grid { grid-template-columns: 1fr; }
  .chart-card--full { grid-column: auto; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-nav-group { flex-wrap: wrap; gap: var(--space-6); }
  .hero-visual { display: none; }
}

@media (max-width: 620px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .tests-grid { grid-template-columns: 1fr; }
  .team-portrait { width: 160px; min-width: 160px; }
  .team-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: var(--space-5); }
  .hero-stat-divider { display: none; }
  .case-outcomes { flex-direction: column; gap: var(--space-3); }
  .form-row { grid-template-columns: 1fr; }
  .footer-nav-group { flex-direction: column; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-headline { font-size: clamp(2rem, 8vw, 3.5rem); }
  .process-line { display: none; }
  .process-step { grid-template-columns: 1fr; }
}

/* ─── NAV UNDERLINE INDICATOR ────────────────────────────── */
.main-nav a { position: relative; }
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--space-3);
  right: var(--space-3);
  height: 1.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform var(--transition-interactive);
  transform-origin: left;
}
.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }

/* ─── SELECT LIGHT MODE FIX ──────────────────────────────── */
.contact-form .form-group select option {
  background: var(--color-surface);
  color: var(--color-text);
}

/* ─── SUBTLE BORDER ACCENT ON HERO CTA ───────────────────── */
.hero .btn-ghost {
  background: rgba(255,255,255,0.06);
  border-color: rgba(141,180,214,0.35);
  color: rgba(216,226,240,0.85);
}
.hero .btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(141,180,214,0.65);
  color: #fff;
  box-shadow: none;
}

/* ─── CHART AREA SUBTLE BACKGROUND ───────────────────────── */
.charts-grid .chart-card {
  position: relative;
}
.charts-grid .chart-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--navy), var(--sky));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0.7;
}

/* ─── TEAM PORTRAIT PHOTO ────────────────────────────────── */
.team-photo {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  object-position: center 15%;
  display: block;
  transition: transform 0.5s var(--ease-out);
}
.team-card:hover .team-photo {
  transform: scale(1.03);
}

/* ─── TEAM CARD HORIZONTAL LAYOUT REFINEMENTS ───────────── */
.team-portrait {
  border-right: 1px solid var(--color-border);
}

/* Stack photo above bio on very small screens */
@media (max-width: 480px) {
  .team-card {
    flex-direction: column;
  }
  .team-portrait {
    width: 100%;
    min-width: unset;
    height: 220px;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .team-photo {
    min-height: unset;
    height: 100%;
  }
}