.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(18px);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}
.site-header.is-scrolled { background: rgba(255, 255, 255, 0.96); box-shadow: 0 12px 38px rgba(15, 23, 42, 0.08); }
.header-shell { height: 100%; display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: 154px; height: auto; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.main-nav a { color: #263247; font-size: 0.94rem; font-weight: 700; }
.main-nav a:hover { color: var(--color-primary); }
.header-cta { margin-left: 6px; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--color-border); border-radius: 12px; background: #fff; }
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: var(--color-dark); transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hero { min-height: 100svh; display: grid; align-items: center; padding-top: calc(var(--header-height) + 44px); background: radial-gradient(circle at 12% 16%, rgba(19, 184, 196, 0.14), transparent 32%), radial-gradient(circle at 76% 12%, rgba(31, 111, 235, 0.16), transparent 30%), linear-gradient(180deg, #ffffff 0%, #f7fbff 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr); gap: clamp(34px, 5vw, 72px); align-items: center; }
.hero-copy p { max-width: 720px; font-size: 1.15rem; }
.hero-actions, .contact-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.proof-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 34px 0 0; }
.proof-strip div { padding: 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.8); box-shadow: var(--shadow-sm); }
.proof-strip dt { font-weight: 900; color: var(--color-dark); }
.proof-strip dd { margin: 4px 0 0; color: var(--color-muted); font-size: 0.9rem; }
.hero-panel { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 500px; background: var(--color-soft); box-shadow: var(--shadow-md); }
.hero-panel img { width: 100%; height: 100%; object-fit: cover; min-height: 500px; }
.hero-panel::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 35%, rgba(11, 18, 32, 0.6)); }
.hero-panel-card { position: absolute; z-index: 1; left: 22px; right: 22px; bottom: 22px; padding: 18px; border-radius: 18px; color: #fff; background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.2); backdrop-filter: blur(14px); }
.hero-panel-card strong { display: block; font-size: 1.05rem; }
.hero-panel-card p { margin: 6px 0 0; color: rgba(255, 255, 255, 0.82); }
.section-heading { margin-bottom: 34px; }
.section-heading.centered { max-width: 820px; margin-inline: auto; text-align: center; }
.split-heading { display: flex; justify-content: space-between; align-items: end; gap: 26px; }
.split-heading p { max-width: 430px; }
.cards-grid { display: grid; gap: 18px; }
.three-cols { grid-template-columns: repeat(3, 1fr); }
.four-cols { grid-template-columns: repeat(4, 1fr); }
.ai-readiness { background: linear-gradient(135deg, #f7fbff 0%, #ffffff 55%, #f5fcff 100%); }
.ai-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr); gap: 22px; align-items: stretch; }
.approach { background: var(--color-dark); }
.approach h2, .approach strong { color: #fff; }
.approach p, .approach span { color: rgba(255, 255, 255, 0.72); }
.approach-grid { display: grid; grid-template-columns: 0.75fr 1fr; gap: 34px; align-items: start; }
.blog-highlight { background: var(--color-soft); }
.contact-grid { display: grid; grid-template-columns: 0.74fr 1fr; gap: 30px; align-items: start; }
.site-footer { padding: 38px 0; background: #07101f; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1fr auto auto; gap: 24px; align-items: center; }
.footer-grid p, .footer-grid small { color: rgba(255, 255, 255, 0.68); margin: 12px 0 0; }
.footer-grid nav { display: flex; gap: 18px; flex-wrap: wrap; }
@media (max-width: 980px) {
  .header-cta { display: none; }
  .nav-toggle { display: inline-block; margin-left: auto; }
  .main-nav { position: fixed; top: var(--header-height); left: 16px; right: 16px; display: grid; gap: 4px; padding: 16px; border: 1px solid var(--color-border); border-radius: 18px; background: #fff; box-shadow: var(--shadow-md); transform: translateY(-16px); opacity: 0; pointer-events: none; }
  .main-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 12px; border-radius: 12px; }
  .main-nav a:hover { background: var(--color-soft); }
  .hero-grid, .ai-grid, .approach-grid, .contact-grid { grid-template-columns: 1fr; }
  .four-cols, .three-cols { grid-template-columns: repeat(2, 1fr); }
  .split-heading { display: block; }
  .proof-strip { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { width: min(100% - 24px, var(--container)); }
  .brand img { width: 132px; }
  .hero-panel, .hero-panel img { min-height: 330px; }
  .four-cols, .three-cols, .footer-grid { grid-template-columns: 1fr; }
  .footer-grid { align-items: start; }
}