:root {
  --color-primary: #2563eb;
  --color-on-primary: #ffffff;
  --color-accent: #059669;
  --color-on-accent: #000000;
  --color-background: #f8fafc;
  --color-foreground: #0f172a;
  --color-card: #ffffff;
  --color-muted: #f1f5fd;
  --color-muted-foreground: #475569;
  --color-border: #e4ecfc;
  --color-ring: #2563eb;
  --font-sans: "Work Sans", system-ui, sans-serif;
  --font-display: "Outfit", system-ui, sans-serif;
  --header-h: 72px;
  --space-section: 6rem;
  --transition: 200ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-foreground);
  background: var(--color-background);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }
button, a { cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0.75rem 1rem;
  z-index: 50;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.eyebrow, .kicker {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.lead {
  color: var(--color-muted-foreground);
  font-size: 1.125rem;
  max-width: 42rem;
}

.section { padding: var(--space-section) 0; }
.section-muted { background: var(--color-muted); }
.section-head { max-width: 40rem; margin-bottom: 3rem; }
.section-head .lead { margin-top: 1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn-sm { min-height: 44px; padding: 0.5rem 0.9rem; font-size: 0.9375rem; }
.btn-accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
}
.btn-accent:hover { background: #047857; color: #ffffff; }
.btn-outline {
  background: transparent;
  color: var(--color-foreground);
  border-color: #cbd5e1;
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost {
  background: transparent;
  color: var(--color-on-primary);
  border-color: rgba(255, 255, 255, 0.7);
}
.btn-ghost:hover { background: #ffffff; color: var(--color-foreground); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-h);
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}
.site-header.scrolled { box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06); }
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin-right: auto;
}
.logo-mark { width: 36px; height: 36px; }
.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.main-nav ul { display: flex; gap: 0.25rem; }
.main-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.75rem;
  color: var(--color-muted-foreground);
  font-weight: 500;
}
.main-nav a:hover,
.main-nav a.active { color: var(--color-primary); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-foreground);
  transition: transform var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero { padding: 4.5rem 0 2rem; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 4rem;
  align-items: end;
}
.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 600;
  margin-bottom: 1.25rem;
}
.hero h1 span { display: block; color: var(--color-primary); }
.hero .lead { margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.hero-metrics,
.metrics-grid {
  display: grid;
}
.hero-metrics {
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--color-border);
  background: var(--color-card);
}
.metric { padding: 1.1rem 1rem 1.2rem; }
.hero-metrics .metric + .metric { border-left: 1px solid var(--color-border); }
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-foreground);
}
.metric-label {
  display: block;
  margin-top: 0.45rem;
  color: var(--color-muted-foreground);
  font-size: 0.875rem;
  line-height: 1.4;
}

.principle-list { border-bottom: 1px solid var(--color-border); }
.principle, .layer {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--color-border);
}
.index {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-primary);
}
.principle h3, .layer h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}
.principle p, .layer p { color: var(--color-muted-foreground); }

.band {
  background: var(--color-foreground);
  color: #ffffff;
  padding: 3.5rem 0;
}
.band-line {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  max-width: 18ch;
}

.metrics-band {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}
.metrics-grid { grid-template-columns: repeat(4, 1fr); }
.metrics-grid .metric { padding: 2rem 1.25rem; }
.metrics-grid .metric + .metric { border-left: 1px solid var(--color-border); }

.partner-logos {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1.5rem 1rem;
  margin-top: 2.5rem;
  align-items: center;
}
.partner-logo {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-card);
}
.partner-logo:hover { border-color: var(--color-primary); }
.partner-logo img { width: 100%; height: auto; }

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}
.split img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}
.split p + p { margin-top: 1rem; }
.split .btn { margin-top: 1.5rem; }
.check-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 2rem;
  margin-top: 2rem;
}
.check-list li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.25rem;
  color: var(--color-foreground);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
}

.layer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 3rem;
}

.cta {
  background: var(--color-primary);
  color: var(--color-on-primary);
  text-align: center;
  padding: var(--space-section) 0;
}
.cta .section-title { color: #ffffff; }
.cta .lead {
  color: #ffffff;
  margin: 0 auto 2rem;
}
.cta .hero-actions { justify-content: center; }

.site-footer {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding-top: 4rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.9fr 0.8fr;
  gap: 2.5rem;
}
.footer-brand p,
.footer-col address,
.footer-col a {
  color: var(--color-muted-foreground);
  margin-top: 1rem;
}
.footer-col h2 {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.footer-col li + li { margin-top: 0.35rem; }
.footer-col a { display: inline-flex; min-height: 44px; align-items: center; margin-top: 0; }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  margin-top: 3rem;
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 0;
  color: var(--color-muted-foreground);
  font-size: 0.875rem;
}

@media (max-width: 1024px) {
  .partner-logos { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1.5rem 1rem;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .hero-grid,
  .split,
  .split-reverse,
  .layer-grid,
  .metrics-grid { grid-template-columns: 1fr; }
  .split-reverse img { order: -1; }
  .metrics-grid .metric + .metric,
  .hero-metrics .metric + .metric { border-left: 0; border-top: 1px solid var(--color-border); }
  .hero-visual img,
  .split img { height: 280px; }
  .partner-logos { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .container { padding: 0 1rem; }
  .section { padding: 4rem 0; }
  .hero { padding-top: 2.5rem; }
  .hero-grid { gap: 2rem; }
  .check-grid,
  .partner-logos,
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}