/* ============================================================
   SEVEN1NINE — Design System & Full Stylesheet
   Version: 2026.1
   ============================================================ */

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  /* Core palette */
  --c-bg:          #06060e;
  --c-surface:     #0c0c1c;
  --c-surface-2:   #101025;
  --c-surface-3:   #16163a;
  --c-border:      rgba(255,255,255,0.07);
  --c-border-2:    rgba(255,255,255,0.12);
  --c-border-3:    rgba(255,255,255,0.18);

  /* Accent — Electric Indigo */
  --c-accent:      #6366f1;
  --c-accent-h:    #7c7ff5;
  --c-accent-d:    #4f52d9;
  --c-accent-glow: rgba(99,102,241,0.30);
  --c-accent-sub:  rgba(99,102,241,0.12);

  /* Growth green */
  --c-green:       #10b981;
  --c-green-sub:   rgba(16,185,129,0.12);

  /* Amber / warning */
  --c-amber:       #f59e0b;

  /* Text */
  --c-text:        #f1f5f9;
  --c-text-2:      #94a3b8;
  --c-text-3:      #64748b;
  --c-text-inv:    #06060e;

  /* Typography */
  --font-display:  'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;
  --font-body:     'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Type scale */
  --t-xs:    0.6875rem;   /*  11px */
  --t-sm:    0.8125rem;   /*  13px */
  --t-base:  1rem;        /*  16px */
  --t-lg:    1.125rem;    /*  18px */
  --t-xl:    1.25rem;     /*  20px */
  --t-2xl:   1.5rem;      /*  24px */
  --t-3xl:   2rem;        /*  32px */
  --t-4xl:   2.625rem;    /*  42px */
  --t-5xl:   3.375rem;    /*  54px */
  --t-6xl:   4.25rem;     /*  68px */
  --t-7xl:   5.5rem;      /*  88px */
  --t-8xl:   7rem;        /* 112px */

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

  /* Radius */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-xl:   16px;
  --r-2xl:  24px;
  --r-full: 9999px;

  /* Elevation */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.6);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.55);
  --shadow-xl:  0 20px 64px rgba(0,0,0,0.65);
  --shadow-acc: 0 0 40px rgba(99,102,241,0.22);
  --shadow-btn: 0 4px 20px rgba(99,102,241,0.40);

  /* Layout */
  --max-w:  1200px;
  --nav-h:  68px;
  --gutter: clamp(1.25rem, 5vw, 3rem);

  /* Transitions */
  --ease:     cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --dur:      180ms;
  --dur-md:   280ms;
  --dur-lg:   400ms;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: 1.65;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul { list-style: none; }
input, textarea, select { font: inherit; }

/* ── TYPOGRAPHY ─────────────────────────────────────────────── */
.font-display { font-family: var(--font-display); }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--c-text);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--t-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
}
.eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

/* ── LAYOUT ─────────────────────────────────────────────────── */
.wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(5rem, 10vw, 8rem);
}

.section--tight {
  padding-block: clamp(3rem, 6vw, 5rem);
}

/* ── GRID ───────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
.grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }

/* ── BUTTON SYSTEM ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 0.75rem 1.625rem;
  font-family: var(--font-display);
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  border-radius: var(--r-md);
  transition: all var(--dur-md) var(--ease);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover {
  background: var(--c-accent-h);
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(99,102,241,0.55);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--c-text-2);
  border: 1px solid var(--c-border-2);
}
.btn--ghost:hover {
  border-color: var(--c-border-3);
  color: var(--c-text);
  background: rgba(255,255,255,0.04);
}

.btn--outline-accent {
  background: transparent;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
}
.btn--outline-accent:hover {
  background: var(--c-accent-sub);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--t-base);
  border-radius: var(--r-lg);
}

.btn--xl {
  padding: 1.125rem 2.5rem;
  font-size: var(--t-lg);
  border-radius: var(--r-lg);
}

.btn--full { width: 100%; }

.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ── NAVIGATION ─────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  overflow: visible;
  transition: background var(--dur-md) var(--ease),
              border-color var(--dur-md) var(--ease),
              box-shadow var(--dur-md) var(--ease);
  border-bottom: 1px solid transparent;
}

.site-nav.is-scrolled {
  background: rgba(6,6,14,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--c-border);
  box-shadow: 0 1px 40px rgba(0,0,0,0.4);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-8);
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: var(--t-xl);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--c-text);
  overflow: visible;
  position: relative;
  z-index: 1;
}
.nav__logo span { color: var(--c-accent); }
.nav__logo img { overflow: visible; }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--s-8);
}
.nav__links a {
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--c-text-2);
  transition: color var(--dur) var(--ease);
  letter-spacing: 0.01em;
}
.nav__links a:hover { color: var(--c-text); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--s-2);
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: all var(--dur-md) var(--ease);
}
.nav-hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

/* Grid overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 100%);
}

/* Glow orb */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(circle, rgba(99,102,241,0.14) 0%, transparent 65%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--s-16);
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: var(--s-20) var(--s-16);
}

.hero__content { max-width: 600px; }

.hero__eyebrow {
  margin-bottom: var(--s-6);
}

.hero__headline {
  font-size: clamp(2.75rem, 6vw, var(--t-7xl));
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.04em;
  margin-bottom: var(--s-6);
  color: var(--c-text);
}

.hero__headline .accent {
  color: var(--c-accent);
  position: relative;
}

.hero__sub {
  font-size: clamp(var(--t-lg), 2vw, var(--t-xl));
  color: var(--c-text-2);
  line-height: 1.6;
  margin-bottom: var(--s-10);
  max-width: 480px;
  font-weight: 400;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}

.hero__proof {
  margin-top: var(--s-12);
  display: flex;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.hero__proof-label {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.hero__proof-dots {
  display: flex;
  gap: -4px;
}
.hero__proof-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--c-bg);
  background: var(--c-surface-3);
  margin-left: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}
.hero__proof-dot:first-child { margin-left: 0; }

/* Floating metric cards */
.hero__cards {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding-left: var(--s-8);
}

.metric-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-xl);
  padding: var(--s-5) var(--s-6);
  display: flex;
  align-items: center;
  gap: var(--s-4);
  box-shadow: var(--shadow-lg);
  transition: transform var(--dur-md) var(--ease);
  position: relative;
  overflow: hidden;
}
.metric-card:hover { transform: translateX(4px); }
.metric-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--c-accent);
  border-radius: 2px 0 0 2px;
}
.metric-card:nth-child(2)::before { background: var(--c-green); }
.metric-card:nth-child(3)::before { background: var(--c-amber); }

.metric-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--c-accent-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--c-accent);
}
.metric-card:nth-child(2) .metric-card__icon {
  background: var(--c-green-sub);
  color: var(--c-green);
}
.metric-card:nth-child(3) .metric-card__icon {
  background: rgba(245,158,11,0.12);
  color: var(--c-amber);
}

.metric-card__label {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.metric-card__value {
  font-family: var(--font-display);
  font-size: var(--t-2xl);
  font-weight: 800;
  color: var(--c-text);
  letter-spacing: -0.03em;
  line-height: 1;
}
.metric-card__badge {
  margin-left: auto;
  font-size: var(--t-xs);
  font-weight: 700;
  color: var(--c-green);
  background: var(--c-green-sub);
  padding: 2px 8px;
  border-radius: var(--r-full);
}

/* Floating animation */
.metric-card:nth-child(1) { animation: float1 6s ease-in-out infinite; }
.metric-card:nth-child(2) { animation: float2 7s ease-in-out infinite 1s; }
.metric-card:nth-child(3) { animation: float3 5.5s ease-in-out infinite 0.5s; }

@keyframes float1 {
  0%,100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-6px) translateX(4px); }
}
@keyframes float2 {
  0%,100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-8px) translateX(-2px); }
}
@keyframes float3 {
  0%,100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-5px) translateX(3px); }
}

/* ── PROOF BAR ──────────────────────────────────────────────── */
.proof-bar {
  padding-block: var(--s-16);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  background: var(--c-surface);
}

.proof-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-4);
}

.proof-stat {
  text-align: center;
  padding: var(--s-4);
  position: relative;
}
.proof-stat + .proof-stat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 25%;
  bottom: 25%;
  width: 1px;
  background: var(--c-border);
}

.proof-stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(var(--t-3xl), 4vw, var(--t-5xl));
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--c-text);
  line-height: 1;
  margin-bottom: var(--s-2);
}
.proof-stat__num .accent { color: var(--c-accent); }

.proof-stat__label {
  font-size: var(--t-sm);
  color: var(--c-text-3);
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* ── SERVICES ───────────────────────────────────────────────── */
.services { background: var(--c-bg); }

.section__header {
  max-width: 680px;
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
}
.section__headline {
  font-size: clamp(var(--t-4xl), 5vw, var(--t-6xl));
  margin-top: var(--s-4);
  margin-bottom: var(--s-5);
}
.section__sub {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  line-height: 1.65;
  font-weight: 400;
}

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

/* ── AI FEATURED SERVICE CARD ───────────────────────────────── */
.service-card--ai {
  grid-column: span 3;
  background: linear-gradient(135deg,
    rgba(16,10,40,0.95) 0%,
    rgba(10,8,30,0.98) 50%,
    rgba(6,6,14,1) 100%);
  border-color: rgba(99,102,241,0.35);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-12);
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Animated glow blob */
.service-card--ai::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99,102,241,0.18) 0%, transparent 65%);
  pointer-events: none;
  animation: aiBlobFloat 8s ease-in-out infinite;
}
.service-card--ai::after { display: none; }

@keyframes aiBlobFloat {
  0%,100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(-20px, 30px) scale(1.08); }
}

.service-card--ai:hover {
  border-color: rgba(99,102,241,0.6);
  box-shadow: 0 0 60px rgba(99,102,241,0.18), var(--shadow-xl);
}

.service-card--ai .service-card__icon {
  width: 64px;
  height: 64px;
  background: rgba(99,102,241,0.2);
  border: 1px solid rgba(99,102,241,0.4);
  box-shadow: 0 0 24px rgba(99,102,241,0.2);
}

.service-card--ai .service-card__title {
  font-size: clamp(var(--t-2xl), 3vw, var(--t-4xl));
  background: linear-gradient(135deg, #f1f5f9 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--s-4);
}

.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--t-xs);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  background: rgba(99,102,241,0.15);
  border: 1px solid rgba(99,102,241,0.4);
  padding: 4px 12px;
  border-radius: var(--r-full);
  margin-bottom: var(--s-5);
}
.ai-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 8px var(--c-accent);
  animation: pulse 2s ease-in-out infinite;
}

.ai-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
}

.ai-feature {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--r-lg);
  padding: var(--s-5);
  transition: all var(--dur-md) var(--ease);
}
.ai-feature:hover {
  background: rgba(99,102,241,0.08);
  border-color: rgba(99,102,241,0.25);
  transform: translateY(-2px);
}

.ai-feature__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  background: rgba(99,102,241,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
  margin-bottom: var(--s-3);
}
.ai-feature__icon svg { width: 18px; height: 18px; }

.ai-feature__title {
  font-family: var(--font-display);
  font-size: var(--t-sm);
  font-weight: 800;
  color: var(--c-text);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.ai-feature__body {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  line-height: 1.55;
}

.service-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--s-8);
  transition: all var(--dur-md) var(--ease);
  position: relative;
  overflow: hidden;
  cursor: default;
}
.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(99,102,241,0.07), transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-md) var(--ease);
  pointer-events: none;
}
.service-card:hover {
  border-color: var(--c-border-2);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}
.service-card:hover::after { opacity: 1; }

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-lg);
  background: var(--c-accent-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--s-6);
  color: var(--c-accent);
  flex-shrink: 0;
}
.service-card__icon svg { width: 24px; height: 24px; }

.service-card__title {
  font-size: var(--t-xl);
  font-weight: 800;
  margin-bottom: var(--s-3);
  letter-spacing: -0.02em;
}
.service-card__body {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.7;
  margin-bottom: var(--s-6);
}
.service-card__link {
  font-size: var(--t-sm);
  font-weight: 700;
  color: var(--c-accent);
  display: flex;
  align-items: center;
  gap: var(--s-1);
  transition: gap var(--dur) var(--ease);
}
.service-card:hover .service-card__link { gap: var(--s-2); }

/* ── CASE STUDIES ───────────────────────────────────────────── */
.work {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.cases__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-6);
  margin-top: var(--s-12);
}

.case-card {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-2xl);
  padding: var(--s-10);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-md) var(--ease), border-color var(--dur-md) var(--ease);
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-2);
}

.case-card--featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-10);
  align-items: center;
  background: linear-gradient(135deg, var(--c-surface-2) 0%, var(--c-surface-3) 100%);
  border-color: var(--c-border-2);
}

.case-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--t-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-accent);
  background: var(--c-accent-sub);
  padding: 4px 10px;
  border-radius: var(--r-full);
  margin-bottom: var(--s-5);
}

.case-card__title {
  font-size: var(--t-2xl);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: var(--s-4);
}
.case-card--featured .case-card__title {
  font-size: clamp(var(--t-2xl), 3vw, var(--t-4xl));
}

.case-card__body {
  font-size: var(--t-base);
  color: var(--c-text-2);
  line-height: 1.65;
  margin-bottom: var(--s-8);
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
}
.case-metric__num {
  font-family: var(--font-display);
  font-size: var(--t-3xl);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--c-green);
  line-height: 1;
  margin-bottom: 4px;
}
.case-metric__label {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.case-card__industry {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  font-weight: 500;
  margin-top: var(--s-6);
  padding-top: var(--s-6);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.case-card__industry strong { color: var(--c-text-2); }

/* ── METHODOLOGY ────────────────────────────────────────────── */
.method { background: var(--c-bg); }

.method__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-16);
  align-items: start;
  margin-top: var(--s-12);
}

.method__steps { display: flex; flex-direction: column; gap: var(--s-4); }

.method-step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: var(--s-5);
  padding: var(--s-6);
  border-radius: var(--r-xl);
  border: 1px solid transparent;
  transition: all var(--dur-md) var(--ease);
  cursor: default;
}
.method-step:hover, .method-step.is-active {
  background: var(--c-surface);
  border-color: var(--c-border-2);
}
.method-step.is-active .method-step__num { background: var(--c-accent); color: #fff; }

.method-step__num {
  width: 44px;
  height: 44px;
  border-radius: var(--r-lg);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--t-sm);
  font-weight: 800;
  color: var(--c-text-2);
  letter-spacing: -0.02em;
  flex-shrink: 0;
  transition: all var(--dur-md) var(--ease);
}

.method-step__title {
  font-size: var(--t-lg);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--s-2);
}
.method-step__body {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.65;
}

.method__visual {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}

.method__visual-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-2xl);
  padding: var(--s-8);
  box-shadow: var(--shadow-xl), var(--shadow-acc);
}

.method__visual-title {
  font-size: var(--t-sm);
  font-weight: 700;
  color: var(--c-text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--s-6);
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.method__visual-title::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 8px var(--c-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.4); }
}

.perf-row {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--c-border);
}
.perf-row:last-child { border-bottom: none; }

.perf-row__label {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  flex: 1;
  font-weight: 500;
}
.perf-row__bar {
  flex: 2;
  height: 6px;
  background: var(--c-surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
}
.perf-row__fill {
  height: 100%;
  border-radius: var(--r-full);
  background: linear-gradient(90deg, var(--c-accent), var(--c-accent-h));
  transition: width 1.2s var(--ease-out);
}
.perf-row:nth-child(2) .perf-row__fill { background: linear-gradient(90deg, var(--c-green), #34d399); }
.perf-row:nth-child(3) .perf-row__fill { background: linear-gradient(90deg, var(--c-amber), #fbbf24); }
.perf-row:nth-child(4) .perf-row__fill { background: linear-gradient(90deg, #ec4899, #f472b6); }

.perf-row__val {
  font-family: var(--font-display);
  font-size: var(--t-sm);
  font-weight: 800;
  color: var(--c-text);
  min-width: 36px;
  text-align: right;
}

/* ── LOGO MARQUEE / CLIENTS ─────────────────────────────────── */
.client-bar {
  padding-block: var(--s-12);
  overflow: hidden;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.client-bar__label {
  text-align: center;
  font-size: var(--t-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-3);
  margin-bottom: var(--s-8);
}
.marquee-track {
  display: flex;
  gap: var(--s-16);
  animation: marquee 30s linear infinite;
  width: max-content;
}
.marquee-item {
  font-family: var(--font-display);
  font-size: var(--t-xl);
  font-weight: 800;
  color: var(--c-text-3);
  letter-spacing: -0.03em;
  white-space: nowrap;
  opacity: 0.4;
  transition: opacity var(--dur) var(--ease);
}
.marquee-item:hover { opacity: 0.8; }

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── CTA BAND ───────────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(135deg, #0e0e28 0%, #0d0d22 50%, #0a0a1e 100%);
  border-top: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 80vw;
  max-width: 1000px;
  background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 65%);
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}
.cta-band__headline {
  font-size: clamp(var(--t-4xl), 6vw, var(--t-7xl));
  margin-bottom: var(--s-6);
  line-height: 1.0;
}
.cta-band__headline .accent { color: var(--c-accent); }
.cta-band__sub {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  margin-bottom: var(--s-10);
  line-height: 1.6;
}
.cta-band__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.cta-band__fine {
  margin-top: var(--s-6);
  font-size: var(--t-xs);
  color: var(--c-text-3);
}

/* ── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding-top: var(--s-16);
}

.footer__body {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--s-10);
  padding-bottom: var(--s-16);
  border-bottom: 1px solid var(--c-border);
}

.footer__brand-logo {
  font-family: var(--font-display);
  font-size: var(--t-xl);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: var(--s-4);
  display: block;
}
.footer__brand-logo span { color: var(--c-accent); }

.footer__tagline {
  font-size: var(--t-sm);
  color: var(--c-text-3);
  line-height: 1.7;
  max-width: 280px;
  margin-bottom: var(--s-6);
}

.footer__col h4 {
  font-size: var(--t-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-3);
  margin-bottom: var(--s-5);
}
.footer__col ul { display: flex; flex-direction: column; gap: var(--s-3); }
.footer__col a {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  transition: color var(--dur) var(--ease);
}
.footer__col a:hover { color: var(--c-text); }

.footer__bar {
  padding-block: var(--s-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.footer__bar p {
  font-size: var(--t-xs);
  color: var(--c-text-3);
}
.footer__bar-links {
  display: flex;
  gap: var(--s-6);
}
.footer__bar-links a {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  transition: color var(--dur) var(--ease);
}
.footer__bar-links a:hover { color: var(--c-text-2); }

/* ── CONTACT PAGE ───────────────────────────────────────────── */
.contact-hero {
  padding-top: calc(var(--nav-h) + var(--s-20));
  padding-bottom: var(--s-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.contact-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, black 20%, transparent 100%);
}
.contact-hero__inner { position: relative; z-index: 1; }
.contact-hero__eyebrow { margin-bottom: var(--s-5); }
.contact-hero h1 {
  font-size: clamp(var(--t-4xl), 5.5vw, var(--t-6xl));
  margin-bottom: var(--s-5);
}
.contact-hero__sub {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  max-width: 480px;
  margin-inline: auto;
  line-height: 1.65;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: var(--s-12);
  align-items: start;
}

.contact-form-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-2xl);
  padding: var(--s-10);
}
.contact-form-card h2 {
  font-size: var(--t-3xl);
  margin-bottom: var(--s-2);
}
.contact-form-card__sub {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  margin-bottom: var(--s-8);
  line-height: 1.6;
}

/* ── FORM SYSTEM ────────────────────────────────────────────── */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
}

.form-group {
  margin-bottom: var(--s-5);
}
.form-group label {
  display: block;
  font-size: var(--t-sm);
  font-weight: 600;
  color: var(--c-text-2);
  margin-bottom: var(--s-2);
  letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-md);
  color: var(--c-text);
  padding: 0.75rem 1rem;
  font-size: var(--t-base);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  outline: none;
  appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--c-text-3); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
  background: rgba(99,102,241,0.06);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%2364748b' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-group select option { background: var(--c-surface-2); color: var(--c-text); }

.form-group textarea { resize: vertical; min-height: 140px; line-height: 1.6; }

/* ── CONTACT SIDEBAR ────────────────────────────────────────── */
.contact-side { display: flex; flex-direction: column; gap: var(--s-5); }

.contact-info-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-2xl);
  overflow: hidden;
}
.contact-info-card__head {
  background: linear-gradient(135deg, var(--c-surface-2), var(--c-surface-3));
  border-bottom: 1px solid var(--c-border);
  padding: var(--s-6) var(--s-8);
}
.contact-info-card__head h3 {
  font-size: var(--t-xl);
  margin-bottom: var(--s-2);
}
.contact-info-card__head p {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.6;
}
.contact-info-card__body { padding: var(--s-6) var(--s-8); display: flex; flex-direction: column; gap: var(--s-5); }

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--s-4);
}
.contact-info-item__icon {
  width: 38px;
  height: 38px;
  background: var(--c-accent-sub);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-size: var(--t-sm);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}
.contact-info-item p, .contact-info-item a {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.5;
}
.contact-info-item a:hover { color: var(--c-accent); }

.next-steps-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-2xl);
  padding: var(--s-8);
}
.next-steps-card h3 {
  font-size: var(--t-lg);
  margin-bottom: var(--s-6);
}

.step-list { display: flex; flex-direction: column; gap: var(--s-4); }
.step-item {
  display: flex;
  gap: var(--s-4);
  align-items: flex-start;
}
.step-item__num {
  width: 28px;
  height: 28px;
  border-radius: var(--r-md);
  background: var(--c-accent-sub);
  border: 1px solid rgba(99,102,241,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--t-xs);
  font-weight: 800;
  color: var(--c-accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.step-item p {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.6;
}
.step-item strong { color: var(--c-text); }

/* ── SUCCESS / ERROR BANNERS ────────────────────────────────── */
.form-banner {
  border-radius: var(--r-lg);
  padding: var(--s-4) var(--s-5);
  margin-bottom: var(--s-6);
  display: none;
}
.form-banner--success {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
}
.form-banner--error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
}
.form-banner__title {
  font-weight: 700;
  font-size: var(--t-sm);
  color: var(--c-green);
  margin-bottom: 4px;
}
.form-banner--error .form-banner__title { color: #f87171; }
.form-banner__body {
  font-size: var(--t-sm);
  color: var(--c-text-2);
}

/* ── SCROLL REVEAL ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-lg) var(--ease-out), transform var(--dur-lg) var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ── UTILITY ────────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.text-accent { color: var(--c-accent); }
.text-green { color: var(--c-green); }

/* ── MOBILE MENU ────────────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(6,6,14,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-6);
  padding: var(--s-8);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--t-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--c-text-2);
  transition: color var(--dur) var(--ease);
}
.mobile-menu a:hover { color: var(--c-text); }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: var(--s-10); }
  .hero__cards { padding-left: 0; flex-direction: row; flex-wrap: wrap; }
  .metric-card { flex: 1 1 280px; }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--ai { grid-column: span 2; grid-template-columns: 1fr; gap: var(--s-8); }
  .cases__grid { grid-template-columns: 1fr; }
  .case-card--featured { grid-column: auto; grid-template-columns: 1fr; }
  .method__grid { grid-template-columns: 1fr; }
  .method__visual { position: static; }
  .footer__body { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-side { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }
  .nav__links, .nav__actions .btn:not(.btn--primary) { display: none; }
  .nav-hamburger { display: flex; }
  .proof-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .proof-stat + .proof-stat::before { display: none; }
  .services__grid { grid-template-columns: 1fr; }
  .service-card--ai { grid-column: auto; }
  .ai-features { grid-template-columns: 1fr 1fr; }
  .footer__body { grid-template-columns: 1fr; }
  .contact-side { grid-template-columns: 1fr; }
  .cta-band__actions { flex-direction: column; align-items: stretch; }
  .cta-band__actions .btn { justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__headline { font-size: clamp(2.2rem, 11vw, 3rem); }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .case-metrics { grid-template-columns: repeat(3, 1fr); }
  .case-metric__num { font-size: var(--t-2xl); }
}