:root {
  --c-bg: #ffffff;
  --c-fg: #0f172a;
  --c-muted: #475569;
  --c-line: #e2e8f0;
  --c-surface: #f8fafc;
  --c-primary: #0ea5e9;
  --c-primary-2: #6366f1;
  --c-primary-3: #0369a1;
  --c-dark: #0f172a;
  --radius: 10px;
  --maxw: 1240px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--c-fg);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary-3); text-decoration: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

.draft-banner {
  background: #fff3cd; color: #5b4500;
  text-align: center; font-size: 12px;
  padding: 6px 12px; border-bottom: 1px solid #f0d775;
}

.itk-top {
  background: var(--c-dark);
  color: #cbd5e1;
  font-size: 13px;
}
.itk-top .container {
  display: flex; justify-content: space-between; align-items: center;
  min-height: 38px;
}
.itk-top a { color: #e2e8f0; }
.itk-top a:hover { color: #38bdf8; }

.itk-header {
  border-bottom: 1px solid var(--c-line);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 50;
}
.itk-header .container {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 32px;
}
.itk-brand {
  display: flex; align-items: center; gap: 14px;
  font-weight: 800; color: var(--c-dark);
  letter-spacing: -0.01em;
  text-decoration: none;
}
.itk-logo {
  height: 26px;
  width: auto;
  display: block;
}
.itk-brand small {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--c-muted);
  text-transform: uppercase;
  border-left: 1px solid var(--c-line);
  padding-left: 14px;
}
.itk-footer .itk-brand small {
  border-left-color: rgba(255, 255, 255, 0.15);
  color: #94a3b8;
}

/* HERO SPLIT (Text + Visual) */
.itk-hero .container.itk-hero-split {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 900px) {
  .itk-hero .container.itk-hero-split { grid-template-columns: 1fr; gap: 48px; }
  .itk-hero-visual { order: -1; }
}
.itk-hero-visual {
  position: relative;
}
.itk-hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.12), rgba(99, 102, 241, 0.08));
  border-radius: 12px;
  transform: translate(16px, 16px);
  z-index: 0;
}
.itk-hero-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
  border: 1px solid var(--c-line);
}
.itk-nav ul { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.itk-nav a { color: var(--c-dark); font-weight: 500; font-size: 15px; }
.itk-nav a:hover { color: var(--c-primary-3); }
.itk-cta {
  background: var(--c-dark);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
}
.itk-cta:hover { background: #1e293b; }
.itk-switch {
  font-size: 12px;
  color: var(--c-muted);
  border-left: 1px solid var(--c-line);
  padding-left: 16px;
}
.itk-switch a { color: var(--c-primary-3); font-weight: 600; }

/* MOBILE BURGER */
.hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 60;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-dark);
  margin: 5px 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .hamburger { display: inline-block; }
  .itk-header .container { gap: 12px; }
  .itk-cta { display: none; }
  .itk-nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100vh;
    background: #ffffff;
    padding: 100px 28px 80px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 50;
    border-left: 1px solid var(--c-line);
  }
  body.nav-open .itk-nav { transform: translateX(0); }
  body.nav-open { overflow: hidden; }
  .itk-nav ul {
    flex-direction: column;
    gap: 0;
    align-items: stretch;
  }
  .itk-nav li {
    padding: 0;
    border-bottom: 1px solid var(--c-line);
  }
  .itk-nav a {
    font-size: 16px;
    padding: 16px 0;
    display: block;
    letter-spacing: 0.04em;
  }
}

/* STICKY MOBILE CTA */
.sticky-mcta { display: none; }
@media (max-width: 900px) {
  .sticky-mcta {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #ffffff;
    border-top: 1px solid var(--c-line);
    padding: 10px 12px env(safe-area-inset-bottom, 10px);
    z-index: 80;
    gap: 8px;
    box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.12);
  }
  .sticky-mcta a {
    flex: 1;
    text-align: center;
    padding: 13px 8px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
  }
  .sticky-mcta .smcta-call {
    background: var(--c-dark);
    color: #fff;
  }
  .sticky-mcta .smcta-contact {
    background: transparent;
    color: var(--c-dark);
    border: 1px solid var(--c-line);
  }
  body { padding-bottom: 70px; }
  body.nav-open { padding-bottom: 0; }
}

/* HERO */
.itk-hero {
  position: relative;
  background:
    radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.10), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.08), transparent 50%),
    #f8fafc;
  padding: 100px 0 120px;
  overflow: hidden;
}
.itk-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.itk-hero .container { position: relative; z-index: 2; }
.itk-hero h1 {
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  max-width: 920px;
}
.itk-hero h1 .accent {
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.itk-hero p {
  font-size: 19px; color: var(--c-muted);
  max-width: 680px; margin: 0 0 36px;
}
.itk-hero .eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
  background: rgba(14, 165, 233, 0.1);
  color: #0369a1;
  border: 1px solid rgba(14, 165, 233, 0.25);
}
.itk-hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 24px; border-radius: 8px;
  font-weight: 600; font-size: 15px;
  text-decoration: none; transition: all 0.2s ease;
}
.btn-primary { background: var(--c-dark); color: #fff; }
.btn-primary:hover { background: #1e293b; transform: translateY(-1px); }
.btn-ghost {
  background: #fff; color: var(--c-dark);
  border: 1px solid var(--c-line);
}
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary-3); }

/* INTRO PERSON */
.itk-intro-person {
  background: var(--c-surface);
  padding: 64px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.itk-intro-person .container {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  align-items: center;
  max-width: 980px;
}
.itk-intro-person .intro-portrait {
  width: 180px;
  height: 200px;
  object-fit: cover;
  object-position: center top;
  border-radius: 12px;
  border: 1px solid var(--c-line);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.10);
  display: block;
}
.itk-intro-person .label {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-primary-3);
  margin-bottom: 14px;
  font-weight: 600;
  padding: 5px 12px;
  background: rgba(14, 165, 233, 0.08);
  border-radius: 4px;
}
.itk-intro-person p {
  font-size: 19px;
  line-height: 1.55;
  color: var(--c-fg);
  margin: 0 0 16px;
  font-style: italic;
}
.itk-intro-person .meta {
  font-size: 14px;
  color: var(--c-muted);
  font-style: normal;
}
.itk-intro-person .meta strong { color: var(--c-dark); font-weight: 700; }
@media (max-width: 700px) {
  .itk-intro-person .container { grid-template-columns: 1fr; gap: 32px; }
  .itk-intro-person .intro-portrait { width: 140px; height: 160px; }
}

/* STATS */
.itk-stats {
  background: var(--c-dark);
  color: #e2e8f0;
  padding: 48px 0;
}
.itk-stats .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
@media (max-width: 800px) { .itk-stats .grid { grid-template-columns: repeat(2, 1fr); } }
.itk-stats .num {
  font-size: 36px; font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.itk-stats .lbl {
  font-size: 13px; color: #94a3b8;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-top: 4px;
}

/* SECTION */
.section { padding: 100px 0; }
.section h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  max-width: 720px;
}
.section .lead {
  color: var(--c-muted);
  font-size: 18px;
  max-width: 680px;
  margin: 0 0 48px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .services-grid { grid-template-columns: 1fr; } }
.service-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 12px;
  padding: 32px;
  transition: all 0.2s ease;
}
.service-card:hover {
  border-color: var(--c-primary);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.08);
  transform: translateY(-2px);
}
.service-card .icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, #e0f2fe, #ede9fe);
  color: var(--c-primary-3);
  display: grid; place-items: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.service-card h3 {
  font-size: 19px; font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.service-card p { color: var(--c-muted); margin: 0 0 16px; font-size: 15px; }
.service-card ul {
  list-style: none; padding: 0; margin: 0;
  font-size: 14px; color: var(--c-muted);
}
.service-card li {
  padding: 6px 0;
  border-top: 1px solid var(--c-line);
}
.service-card li:first-child { border-top: none; }
.service-card li::before {
  content: '→';
  color: var(--c-primary);
  margin-right: 8px;
  font-weight: 600;
}

/* PROCESS */
.itk-process { background: var(--c-surface); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
@media (max-width: 900px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
.step {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 12px;
  padding: 28px;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.step h4 { font-size: 17px; margin: 0 0 8px; font-weight: 700; }
.step p { color: var(--c-muted); font-size: 14px; margin: 0; }

/* CTA */
.itk-cta-band {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0369a1 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}
.itk-cta-band h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  margin: 0 auto 16px;
  max-width: 720px;
  letter-spacing: -0.02em;
}
.itk-cta-band p { color: #cbd5e1; max-width: 580px; margin: 0 auto 32px; }
.itk-cta-band .btn-primary {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  color: #0f172a;
}
.itk-cta-band .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(56, 189, 248, 0.3); }

/* FOOTER */
.itk-footer {
  background: var(--c-dark);
  color: #94a3b8;
  padding: 64px 0 24px;
  font-size: 14px;
}
.itk-footer .cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
@media (max-width: 900px) { .itk-footer .cols { grid-template-columns: 1fr 1fr; } }
.itk-footer h5 {
  color: #f1f5f9; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin: 0 0 16px;
}
.itk-footer ul { list-style: none; padding: 0; margin: 0; }
.itk-footer li { padding: 4px 0; }
.itk-footer a { color: #94a3b8; }
.itk-footer a:hover { color: #38bdf8; }
.itk-footer .bottom {
  border-top: 1px solid #1e293b;
  padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: #64748b;
}