/* Self-hosted Montserrat variable font — no Google Fonts tracking, works offline */
@font-face {
  font-family: 'Montserrat';
  src: url('/assets/fonts/montserrat.woff2') format('woff2');
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --color-primary:     #060C1D;
  --color-accent:      #2DD4BF;
  --color-accent-dark: #14B8A6;
  --color-accent-2:    #2563EB;
  --color-accent-glow: rgba(45,212,191,.12);
  --color-body:        #0F172A;
  --color-muted:       #64748b;
  --color-surface:     #EFF6FF;
  --color-surface-2:   #F0FDFA;
  --color-border:      #BFDBFE;
  --color-white:       #ffffff;

  --font-heading: 'Montserrat', system-ui, sans-serif;
  --font-body:    system-ui, -apple-system, sans-serif;

  --radius:    8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:    0 4px 12px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.05);
  --shadow-md: 0 8px 28px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.06);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.16), 0 4px 16px rgba(0,0,0,.08);

  --container: 1160px;
  --nav-h:     68px;

  --transition: .2s cubic-bezier(.4,0,.2,1);

  --nav-bg:             #060C1D;
  --hero-text:          #ffffff;
  --hero-muted:         rgba(255,255,255,.62);
  --eyebrow-bg:         rgba(45,212,191,.08);
  --eyebrow-border:     rgba(45,212,191,.2);
  --eyebrow-color:      #2DD4BF;
  --glow-ring:          rgba(45,212,191,.12);
  --footer-bg:          #020509;
  --aquamarine:         #2DD4BF;
  --color-btn:          #2563EB;
  --color-btn-dark:     #1D4ED8;
  --glow-btn:           rgba(37,99,235,.38);
  --glow-btn-hover:     rgba(37,99,235,.55);
  --glow-primary:       rgba(45,212,191,.3);
  --glow-form:          rgba(45,212,191,.15);
  --glow-step:          rgba(45,212,191,.35);
  --glow-service-hover: rgba(45,212,191,.2);
  --glow-card-hover:    rgba(45,212,191,.17);
  --glow-card-shimmer:  linear-gradient(135deg, rgba(45,212,191,.03) 0%, transparent 60%);
  --gradient-card-icon: linear-gradient(135deg, rgba(45,212,191,.1) 0%, rgba(37,99,235,.08) 100%);
  --gradient-service:   linear-gradient(90deg, #2DD4BF, #2563EB);
  --gradient-step:      linear-gradient(135deg, #2DD4BF, #2563EB);
  --gradient-text:      linear-gradient(135deg, #2DD4BF, #60A5FA);
  --check-circle-bg:    rgba(45,212,191,.08);
  --check-icon:         url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%232dd4bf' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C%2Fsvg%3E");
  --gradient-hero:      radial-gradient(ellipse 80% 60% at 70% 50%, rgba(45,212,191,.18) 0%, transparent 65%), radial-gradient(ellipse 40% 80% at 10% 80%, rgba(37,99,235,.1) 0%, transparent 55%), linear-gradient(160deg, #060C1D 0%, #0C1535 55%, #060C1D 100%);
  --gradient-inner:     radial-gradient(ellipse 70% 100% at 80% 50%, rgba(45,212,191,.15) 0%, transparent 65%), linear-gradient(160deg, #060C1D 0%, #0F1B3D 100%);
  --gradient-cta:       radial-gradient(ellipse 80% 120% at 50% 50%, rgba(45,212,191,.18) 0%, transparent 65%), linear-gradient(160deg, #060C1D 0%, #0F1B3D 100%);
  --hero-btn-color:     rgba(255,255,255,.88);
  --hero-btn-border:    rgba(255,255,255,.35);
  --hero-btn-hover-bg:  rgba(255,255,255,.08);
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-body);
  background: var(--color-white);
}

img { max-width: 100%; height: auto; display: block; }
a   { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-dark); text-decoration: underline; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -.025em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -.02em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p + p { margin-top: .875rem; }
ul, ol { padding-left: 1.5rem; }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section          { padding-block: 5.5rem; }
.section--sm      { padding-block: 3.5rem; }
.section--surface { background: var(--color-surface); }
.section--surface-2 { background: var(--color-surface-2); }
.section--primary { background: var(--color-primary); color: var(--color-white); }
.section--primary h1,
.section--primary h2,
.section--primary h3 { color: var(--color-white); }

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

.flex-center { display: flex; align-items: center; justify-content: center; }
.text-center { text-align: center; }
.text-muted  { color: var(--color-muted); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: var(--nav-h);
  border-bottom: 1px solid rgba(0,0,0,.1);
  box-shadow: 0 2px 20px rgba(0,0,0,.15);
}

.site-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img {
  height: 48px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition);
}
.nav-logo img:hover { opacity: .85; }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: .15rem;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: .5rem .9rem;
  color: rgba(255,255,255,.78);
  font-family: var(--font-heading);
  font-size: .83rem;
  font-weight: 600;
  letter-spacing: .01em;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
  background: rgba(255,255,255,.1);
  text-decoration: none;
}
.nav-links a.active { color: var(--color-accent); }

.nav-dropdown { position: relative; }
.nav-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: .4rem;
  vertical-align: middle;
  opacity: .7;
}
/* Invisible bridge fills the gap so the mouse stays within nav-dropdown when moving down to the menu */
.nav-dropdown::before {
  content: '';
  position: absolute;
  top: 100%;
  left: -10px;
  right: -10px;
  height: 16px;
  display: none;
  z-index: 199;
}
.nav-dropdown:hover::before { display: block; }

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 230px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: .5rem;
  z-index: 200;
}
.nav-dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu li a {
  display: block;
  padding: .55rem 1rem;
  color: var(--color-body);
  font-family: var(--font-heading);
  font-size: .82rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.dropdown-menu li a:hover {
  background: var(--color-surface);
  color: var(--color-accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  color: var(--color-white);
  font-size: 1.5rem;
  line-height: 1;
}

/* ============================================================
   HERO — HOME
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  padding-block: 7rem 6rem;
  color: var(--color-white);
}

/* mesh gradient */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  pointer-events: none;
}

/* decorative ring */
.hero::after {
  content: '';
  position: absolute;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  border: 1px solid var(--glow-ring);
  top: -160px;
  right: -120px;
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; max-width: 800px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--eyebrow-bg);
  border: 1px solid var(--eyebrow-border);
  border-radius: 999px;
  padding: .35rem 1rem;
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--eyebrow-color);
  margin-bottom: 1.5rem;
}
.hero-eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--eyebrow-color);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(.7); }
}

.hero h1 {
  color: var(--hero-text);
  margin-bottom: 1.5rem;
  max-width: 720px;
}
.hero h1 em {
  font-style: normal;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--hero-muted);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.hero .btn-outline {
  color: var(--hero-btn-color);
  border-color: var(--hero-btn-border);
}
.hero .btn-outline:hover {
  background: var(--hero-btn-hover-bg);
  border-color: var(--hero-btn-border);
  color: var(--hero-btn-color);
}

/* ── inner hero (sub-pages) ── */
.hero--inner {
  position: relative;
  overflow: hidden;
  padding-block: 3.75rem;
  background: var(--nav-bg);
}
.hero--inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-inner);
  pointer-events: none;
}
.hero--inner .container { position: relative; z-index: 1; }
.hero--inner h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  color: var(--color-white);
  margin-bottom: .75rem;
}
.hero--inner p { color: rgba(255,255,255,.68); max-width: 620px; font-size: 1.05rem; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.85rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .01em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform .1s;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-btn);
  color: var(--color-white);
  border-color: var(--color-btn);
  box-shadow: 0 4px 16px var(--glow-btn);
}
.btn-primary:hover {
  background: var(--color-btn-dark);
  border-color: var(--color-btn-dark);
  color: var(--color-white);
  box-shadow: 0 6px 20px var(--glow-btn-hover);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.45);
}
.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.8);
  color: var(--color-white);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline-dark:hover {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 16px var(--glow-primary);
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: .875rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  flex-shrink: 0;
}

.section-heading { margin-bottom: 1rem; }
.section-subheading {
  color: var(--color-muted);
  font-size: 1.05rem;
  max-width: 580px;
  margin-bottom: 3rem;
  line-height: 1.75;
}
.section-header { margin-bottom: 3.5rem; }
.section-header.center { text-align: center; }
.section-header.center .section-label { justify-content: center; }
.section-header.center .section-label::before { display: none; }
.section-header.center .section-subheading { margin-inline: auto; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition);
  background: var(--glow-card-shimmer);
  pointer-events: none;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--glow-card-hover); }
.card:hover::after { opacity: 1; }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--gradient-card-icon);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.card h3 { margin-bottom: .5rem; font-size: 1.1rem; }
.card p  { color: var(--color-muted); font-size: .925rem; line-height: 1.65; }

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}
.service-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  background: var(--color-white);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  text-decoration: none !important;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-service);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--glow-service-hover);
  transform: translateY(-3px);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card .card-icon { margin-bottom: 1rem; }
.service-card h3 { font-size: .975rem; color: var(--color-primary); margin-bottom: .35rem; }
.service-card p  { font-size: .85rem; color: var(--color-muted); line-height: 1.6; }

/* ============================================================
   FEATURE LIST
   ============================================================ */
.feature-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: .75rem 1.5rem;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .95rem;
  color: var(--color-body);
  padding: .5rem 0;
}
.feature-list li::before {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--check-circle-bg);
  background-image: var(--check-icon);
  background-repeat: no-repeat;
  background-position: center;
  margin-top: .15rem;
}

/* ============================================================
   TABS
   ============================================================ */
.tabs { margin-top: 2rem; }
.tab-list {
  display: flex;
  gap: .25rem;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 2rem;
}
.tab-btn {
  padding: .65rem 1.25rem;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .875rem;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
}
.tab-btn:hover  { color: var(--color-accent); }
.tab-btn.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.tab-panel        { display: none; }
.tab-panel.active { display: block; }

/* ============================================================
   CLIENT LOGOS
   ============================================================ */
.clients-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2.5rem 3.5rem;
}
.clients-grid img {
  height: 40px;
  width: auto;
  object-fit: contain;
  filter: grayscale(1) opacity(.45);
  transition: filter var(--transition), transform var(--transition);
}
.clients-grid img:hover { filter: grayscale(0) opacity(1); transform: scale(1.08); }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: .75rem;
  right: 1.25rem;
  font-family: Georgia, serif;
  font-size: 4.5rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: .12;
  pointer-events: none;
}
.testimonial-card blockquote {
  font-size: .925rem;
  color: var(--color-body);
  margin-bottom: 1.25rem;
  font-style: italic;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}
.testimonial-card cite {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-style: normal;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .8rem;
  color: var(--color-primary);
}
.testimonial-card cite::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

/* ============================================================
   CASE STUDY
   ============================================================ */
.case-study-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.case-study-hero img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }

.stats-row { display: flex; gap: 3rem; flex-wrap: wrap; margin-top: 2rem; }
.stat-item .stat-value {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-accent);
  display: block;
  line-height: 1;
  margin-bottom: .25rem;
}
.stat-item .stat-label { color: var(--color-muted); font-size: .875rem; }

/* ============================================================
   PROCESS STEPS
   ============================================================ */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}
.steps li {
  counter-increment: step;
  padding: 1.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.steps li:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.steps li::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-step);
  color: var(--color-white);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: .875rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 12px var(--glow-step);
}
.steps li h4 { margin-bottom: .4rem; }
.steps li p  { font-size: .9rem; color: var(--color-muted); line-height: 1.6; }

/* ============================================================
   TECH GRID
   ============================================================ */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}
.tech-grid img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: grayscale(.4) opacity(.8);
  transition: filter var(--transition), transform var(--transition);
}
.tech-grid img:hover { filter: none; transform: scale(1.1); }

/* ============================================================
   FORM
   ============================================================ */
.form-group { margin-bottom: 1.35rem; }
.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .03em;
  margin-bottom: .45rem;
  color: var(--color-primary);
}
.form-control {
  width: 100%;
  padding: .8rem 1.1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .975rem;
  color: var(--color-body);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control::placeholder { color: #94a3b8; }
.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--glow-form);
}
textarea.form-control { resize: vertical; min-height: 140px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--footer-bg);
  color: rgba(255,255,255,.6);
  padding-block: 4.5rem 2rem;
  border-top: 1px solid rgba(255,255,255,.04);
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.site-footer h4 {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.footer-logo img { height: 44px; margin-bottom: 1.1rem; filter: brightness(0) invert(1); opacity: .9; }
.footer-desc { font-size: .875rem; max-width: 260px; line-height: 1.7; }

.footer-links { list-style: none; padding: 0; }
.footer-links li + li { margin-top: .6rem; }
.footer-links a {
  color: rgba(255,255,255,.55);
  font-size: .875rem;
  transition: color var(--transition), padding-left var(--transition);
  display: inline-block;
}
.footer-links a:hover { color: var(--color-accent); text-decoration: none; padding-left: 4px; }

.footer-bottom {
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .825rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.footer-bottom a { color: rgba(255,255,255,.4); transition: color var(--transition); }
.footer-bottom a:hover { color: var(--color-accent); text-decoration: none; }

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  list-style: none;
  padding: 0;
  display: flex;
  gap: .4rem;
  align-items: center;
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 600;
  color: rgba(255,255,255,.45);
  margin-bottom: 1rem;
  letter-spacing: .02em;
}
.breadcrumb li + li::before { content: '/'; margin-right: .4rem; opacity: .4; }
.breadcrumb a { color: rgba(255,255,255,.65); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-white); text-decoration: none; }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  padding-block: 5rem;
  text-align: center;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-cta);
  pointer-events: none;
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { color: var(--color-white); margin-bottom: .875rem; }
.cta-band p  { color: rgba(255,255,255,.7); margin-bottom: 2.25rem; font-size: 1.05rem; }

/* ============================================================
   AI ADVANTAGE SECTION
   ============================================================ */
.ai-advantage {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  padding-block: 5rem;
}
.ai-advantage::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 120% at 80% 50%, rgba(45,212,191,.15) 0%, transparent 65%),
    radial-gradient(ellipse 40% 80% at 10% 30%, rgba(37,99,235,.08) 0%, transparent 55%);
  pointer-events: none;
}
.ai-advantage .container { position: relative; z-index: 1; }

.ai-advantage .section-label { color: var(--aquamarine); }
.ai-advantage .section-label::before { background: var(--aquamarine); }
.ai-advantage .section-heading { color: var(--color-white); }
.ai-advantage .section-subheading { color: rgba(255,255,255,.65); }

.ai-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.ai-card:hover {
  background: rgba(45,212,191,.1);
  border-color: rgba(45,212,191,.35);
  transform: translateY(-3px);
}
.ai-card .card-icon {
  background: rgba(45,212,191,.15);
  color: var(--aquamarine);
  margin-bottom: 1.1rem;
}
.ai-card h3 { color: var(--color-white); font-size: 1.05rem; margin-bottom: .5rem; }
.ai-card p  { color: rgba(255,255,255,.6); font-size: .9rem; line-height: 1.65; }

.ai-stat-row {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.ai-stat {
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.ai-stat-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--aquamarine);
  line-height: 1;
}
.ai-stat-label {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
}

/* ============================================================
   FADE-IN ON SCROLL
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s cubic-bezier(.4,0,.2,1), transform .55s cubic-bezier(.4,0,.2,1);
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .grid-3, .grid-4     { grid-template-columns: repeat(2, 1fr); }
  .case-study-hero     { grid-template-columns: 1fr; }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .site-nav { position: sticky; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    padding: 1rem;
    gap: 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .nav-links.open     { display: flex; }
  .nav-toggle         { display: block; }
  .nav-links a        { padding: .75rem 1rem; font-size: .9rem; }
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    background: rgba(255,255,255,.05);
    border-radius: var(--radius);
    margin-top: .25rem;
  }
  .nav-dropdown:hover .dropdown-menu { display: none; }
  .nav-dropdown.open  .dropdown-menu { display: block; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero       { padding-block: 5rem 4rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero--inner { padding-block: 3rem; }
  .section    { padding-block: 4rem; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-row  { gap: 1.5rem; }
  .feature-list { grid-template-columns: 1fr; }
}