:root {
  --color-bg: #050b18;
  --color-bg-alt: #0b1f3b;
  --color-surface: #101a32;
  --color-surface-alt: #132142;
  --color-accent: #2dd4ff;
  --color-accent-soft: rgba(45, 212, 255, 0.16);
  --color-text: #f9fafb;
  --color-text-muted: #cbd5f5;
  --color-border: rgba(148, 163, 184, 0.35);
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.55);
  --radius-lg: 18px;
  --radius-pill: 999px;
  --transition-fast: 0.18s ease-out;
  --max-width: 1120px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  color: var(--color-text);
  background: radial-gradient(circle at top left, #020617, #020617 60%);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.6;
}

p {
  margin: 0 0 0.75rem;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.75rem;
}

/* Header & Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.82),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0.5rem;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.55),
    0 14px 28px rgba(15, 23, 42, 0.80);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 0.92rem;
}

.brand-tagline {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.nav a {
  position: relative;
  padding: 0.25rem 0;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(to right, #38bdf8, #a855f7);
  transition: width var(--transition-fast);
}

.nav a:hover {
  color: var(--color-text);
}

.nav a:hover::after {
  width: 100%;
}

/* Hero */

.hero {
  padding: 4.25rem 0 3.5rem;
  background: radial-gradient(circle at top left, #0b1220, #020617 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  gap: 2.75rem;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 1.1rem;
}

.hero-lead {
  margin: 0 0 1.4rem;
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.4rem;
}

.pill {
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: radial-gradient(circle at top left, #0f172a, #020617);
  color: var(--color-text-muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.btn {
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: #0b1120;
  box-shadow: 0 16px 30px rgba(56, 189, 248, 0.38);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 40px rgba(56, 189, 248, 0.5);
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(148, 163, 184, 0.55);
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.65);
  color: var(--color-text-muted);
}

.btn-secondary:hover {
  background: rgba(15, 23, 42, 1);
  color: var(--color-text);
}

.hero-subtext {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 34rem;
}

.hero-visual {
  position: relative;
}

.hero-chart-card {
  background: radial-gradient(circle at top left, #1f2937, #020617);
}

/* Sections */

.section {
  padding: 3.5rem 0 3.2rem;
}

.section-alt {
  background: radial-gradient(circle at top, #020617, #020617 35%, #020617 100%);
}

.section-header {
  max-width: 40rem;
  margin-bottom: 2.1rem;
}

.section-header h2 {
  font-size: 1.5rem;
  margin: 0 0 0.6rem;
}

.section-header p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: radial-gradient(circle at top left, #111827, #020617);
  padding: 1.2rem 1.2rem 1.1rem;
  box-shadow: var(--shadow-soft);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.05rem;
}

.card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.card ul {
  padding-left: 1.1rem;
  margin: 0.6rem 0 0;
}

.card li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.45rem;
}

.card img {
  border-radius: calc(var(--radius-lg) - 6px);
  margin-bottom: 0.7rem;
}

.card figcaption {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* Services */

.services-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.1fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.services-list {
  display: grid;
  gap: 1.25rem;
}

.service-card ul li strong {
  color: #e5e7eb;
}

.services-aside {
  display: grid;
  gap: 1.1rem;
}

.usp-card ul {
  padding-left: 1.1rem;
}

/* Roadmap */

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
  margin-bottom: 2.1rem;
}

.roadmap-card {
  position: relative;
}

.roadmap-phase-label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.7);
  background: rgba(15, 23, 42, 0.95);
  color: #e0f2fe;
  font-size: 0.78rem;
  margin-bottom: 0.6rem;
}

.roadmap-timeline {
  font-size: 0.8rem;
  font-weight: 500;
  color: #bfdbfe;
  margin-top: -0.2rem;
}

.roadmap-card ul {
  margin-top: 0.5rem;
}

.engagement-models {
  margin-top: 0.6rem;
}

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 0.9rem;
}

.engagement-grid h4 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
}

.engagement-grid p {
  font-size: 0.88rem;
}

/* ROI */

.roi-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}

.roi-card .benefits-list {
  padding-left: 1.1rem;
}

.roi-card .benefits-list li strong {
  color: #e5e7eb;
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  padding: 1.2rem 0 1.4rem;
  background: radial-gradient(circle at top, #020617, #000000 55%);
}

/* Shared illustration styling */

.section-illustration {
  width: 100%;
  height: auto;
  display: block;
  border-radius: calc(var(--radius-lg) - 6px);
}

.hero-chart-card .section-illustration {
  max-width: 380px;
  margin-inline: auto;
}

.roadmap-visual-card .section-illustration {
  margin-top: 0.4rem;
  margin-bottom: 0.6rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Responsive */

@media (max-width: 960px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero-visual {
    order: -1;
  }

  .services-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .roadmap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engagement-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .roi-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-inner {
    padding-inline: 0;
  }

  .nav {
    font-size: 0.82rem;
    gap: 0.9rem;
  }

  .hero {
    padding-bottom: 3rem;
  }

  .section {
    padding: 3rem 0 2.8rem;
  }

  .roadmap-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .engagement-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .roi-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}